Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
68c45bf0 | 2 | Copyright (C) 1985, 86,87,88,93,94,95, 1999 Free Software Foundation, Inc. |
86a5659e JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7088d1ca | 8 | the Free Software Foundation; either version 2, or (at your option) |
86a5659e JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
86a5659e JB |
20 | |
21 | ||
68c45bf0 | 22 | #include <config.h> |
86a5659e JB |
23 | #include <signal.h> |
24 | #include <setjmp.h> | |
d3eb3bfa DL |
25 | #ifdef HAVE_UNISTD_H |
26 | #include <unistd.h> | |
27 | #endif | |
86a5659e | 28 | |
86a5659e | 29 | #include "lisp.h" |
9ac0d9e0 | 30 | #include "blockinput.h" |
86a5659e JB |
31 | #undef NULL |
32 | ||
c4ea52a6 RS |
33 | #ifdef macintosh |
34 | #ifdef __MRC__ | |
35 | __sigfun sys_signal (int signal, __sigfun signal_func); | |
36 | #elif __MWERKS__ | |
37 | __signal_func_ptr sys_signal (int signal, __signal_func_ptr signal_func); | |
38 | #else | |
39 | You lose!!! | |
40 | #endif | |
41 | #ifndef subprocesses | |
42 | /* Nonzero means delete a process right away if it exits (process.c). */ | |
43 | static int delete_exited_processes; | |
44 | #endif | |
45 | #ifndef HAVE_X_WINDOWS | |
46 | /* Search path for bitmap files (xfns.c). */ | |
47 | Lisp_Object Vx_bitmap_file_path; | |
48 | #endif | |
49 | #endif /* macintosh */ | |
50 | ||
86a5659e JB |
51 | #define min(x,y) ((x) > (y) ? (y) : (x)) |
52 | ||
fe03522b | 53 | #ifdef WINDOWSNT |
e15b6288 JR |
54 | #define read sys_read |
55 | #define write sys_write | |
fe03522b RS |
56 | #include <windows.h> |
57 | extern int errno; | |
58 | #endif /* not WINDOWSNT */ | |
59 | ||
986ffb24 JB |
60 | /* Does anyone other than VMS need this? */ |
61 | #ifndef fwrite | |
62 | #define sys_fwrite fwrite | |
63 | #else | |
64 | #undef fwrite | |
65 | #endif | |
66 | ||
e24f1d55 RS |
67 | #ifndef HAVE_H_ERRNO |
68 | extern int h_errno; | |
69 | #endif | |
70 | ||
86a5659e JB |
71 | #include <stdio.h> |
72 | #include <sys/types.h> | |
73 | #include <sys/stat.h> | |
74 | #include <errno.h> | |
75 | ||
dca8521c RS |
76 | /* Get _POSIX_VDISABLE, if it is available. */ |
77 | #ifdef HAVE_UNISTD_H | |
78 | #include <unistd.h> | |
79 | #endif | |
80 | ||
d3eb3bfa DL |
81 | #ifdef HAVE_STDLIB_H |
82 | #include <stdlib.h> | |
83 | #endif | |
84 | ||
f95c3f91 | 85 | #ifdef HAVE_SETPGID |
2b7e8799 | 86 | #if !defined (USG) || defined (BSD_PGRPS) |
f95c3f91 GM |
87 | #define setpgrp setpgid |
88 | #endif | |
2b7e8799 | 89 | #endif |
f95c3f91 | 90 | |
b05af5d3 PE |
91 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
92 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
93 | #include <sys/systeminfo.h> | |
94 | #endif | |
95 | ||
207bdbdb RS |
96 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
97 | #include <dos.h> | |
98 | #include "dosfns.h" | |
99 | #include "msdos.h" | |
100 | #include <sys/param.h> | |
15614e61 RS |
101 | |
102 | #if __DJGPP__ > 1 | |
103 | extern int etext; | |
104 | extern unsigned start __asm__ ("start"); | |
105 | #endif | |
207bdbdb RS |
106 | #endif |
107 | ||
9ee9af7a | 108 | #ifndef errno |
86a5659e | 109 | extern int errno; |
9ee9af7a | 110 | #endif |
86a5659e | 111 | |
bb4bc8e2 RM |
112 | #ifdef VMS |
113 | #include <rms.h> | |
114 | #include <ttdef.h> | |
115 | #include <tt2def.h> | |
116 | #include <iodef.h> | |
117 | #include <ssdef.h> | |
118 | #include <descrip.h> | |
119 | #include <fibdef.h> | |
120 | #include <atrdef.h> | |
121 | #include <ctype.h> | |
122 | #include <string.h> | |
123 | #ifdef __GNUC__ | |
124 | #include <sys/file.h> | |
125 | #else | |
126 | #include <file.h> | |
127 | #endif | |
128 | #undef F_SETFL | |
129 | #ifndef RAB$C_BID | |
130 | #include <rab.h> | |
131 | #endif | |
fe03522b | 132 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
133 | #endif /* VMS */ |
134 | ||
135 | #ifndef BSD4_1 | |
2a633456 | 136 | #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG) |
bb4bc8e2 RM |
137 | because the vms compiler doesn't grok `defined' */ |
138 | #include <fcntl.h> | |
139 | #endif | |
140 | #ifdef USG | |
141 | #ifndef USG5 | |
142 | #include <fcntl.h> | |
143 | #endif | |
144 | #endif | |
145 | #endif /* not 4.1 bsd */ | |
86a5659e | 146 | |
207bdbdb | 147 | #ifndef MSDOS |
86a5659e | 148 | #include <sys/ioctl.h> |
207bdbdb | 149 | #endif |
2a633456 | 150 | |
e04a4e0d | 151 | #include "systty.h" |
94c8642a | 152 | #include "syswait.h" |
86a5659e | 153 | |
86a5659e JB |
154 | #ifdef BROKEN_TIOCGWINSZ |
155 | #undef TIOCGWINSZ | |
8dca3179 | 156 | #undef TIOCSWINSZ |
86a5659e JB |
157 | #endif |
158 | ||
c4ea52a6 | 159 | #if defined (USG) || defined (DGUX) |
86a5659e JB |
160 | #include <sys/utsname.h> |
161 | #include <string.h> | |
162 | #ifndef MEMORY_IN_STRING_H | |
163 | #include <memory.h> | |
164 | #endif | |
81444907 | 165 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
166 | #ifdef NEED_SIOCTL |
167 | #include <sys/sioctl.h> | |
168 | #endif | |
169 | #ifdef NEED_PTEM_H | |
170 | #include <sys/stream.h> | |
171 | #include <sys/ptem.h> | |
172 | #endif | |
81444907 | 173 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 174 | #endif /* USG or DGUX */ |
86a5659e | 175 | |
86a5659e JB |
176 | extern int quit_char; |
177 | ||
0137dbf7 | 178 | #include "frame.h" |
86a5659e JB |
179 | #include "window.h" |
180 | #include "termhooks.h" | |
181 | #include "termchar.h" | |
182 | #include "termopts.h" | |
183 | #include "dispextern.h" | |
184 | #include "process.h" | |
185 | ||
fe03522b RS |
186 | #ifdef WINDOWSNT |
187 | #include <direct.h> | |
188 | /* In process.h which conflicts with the local copy. */ | |
189 | #define _P_WAIT 0 | |
190 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
191 | int _CRTAPI1 _getpid (void); | |
192 | #endif | |
193 | ||
86a5659e JB |
194 | #ifdef NONSYSTEM_DIR_LIBRARY |
195 | #include "ndir.h" | |
196 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
197 | ||
91bac16a JB |
198 | #include "syssignal.h" |
199 | #include "systime.h" | |
d79998bc KH |
200 | #ifdef HAVE_UTIME_H |
201 | #include <utime.h> | |
202 | #endif | |
203 | ||
204 | #ifndef HAVE_UTIMES | |
205 | #ifndef HAVE_STRUCT_UTIMBUF | |
206 | /* We want to use utime rather than utimes, but we couldn't find the | |
207 | structure declaration. We'll use the traditional one. */ | |
208 | struct utimbuf { | |
209 | long actime; | |
210 | long modtime; | |
211 | }; | |
212 | #endif | |
213 | #endif | |
86a5659e | 214 | |
a00d5589 RS |
215 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
216 | #ifndef LPASS8 | |
217 | #define LPASS8 0 | |
218 | #endif | |
219 | ||
220 | #ifdef BSD4_1 | |
221 | #define LNOFLSH 0100000 | |
222 | #endif | |
223 | ||
86a5659e JB |
224 | static int baud_convert[] = |
225 | #ifdef BAUD_CONVERT | |
226 | BAUD_CONVERT; | |
227 | #else | |
228 | { | |
229 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
230 | 1800, 2400, 4800, 9600, 19200, 38400 | |
231 | }; | |
232 | #endif | |
233 | ||
f0d21750 GM |
234 | #ifdef HAVE_SPEED_T |
235 | #include <termios.h> | |
236 | extern speed_t ospeed; | |
237 | #else | |
ba5971b3 RS |
238 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
239 | extern short ospeed; | |
240 | #else | |
515b04d0 RS |
241 | #if defined (HAVE_TERMIOS_H) && defined (LINUX) |
242 | #include <termios.h> | |
825e7e55 RS |
243 | /* HJL's version of libc is said to need this on the Alpha. |
244 | On the other hand, DEC OSF1 on the Alpha needs ospeed to be a short. */ | |
f2361c60 RS |
245 | extern speed_t ospeed; |
246 | #else | |
9f80a1c8 | 247 | extern short ospeed; |
f2361c60 | 248 | #endif |
ba5971b3 | 249 | #endif |
f0d21750 | 250 | #endif |
86a5659e | 251 | |
91bac16a | 252 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
253 | Under Unix, this is normally zero except when using X; |
254 | under VMS, we place the input channel number here. */ | |
255 | int input_fd; | |
b9c4113e RS |
256 | |
257 | void croak P_ ((char *)); | |
258 | ||
6d0d20a1 RS |
259 | #ifdef AIXHFT |
260 | void hft_init (); | |
261 | void hft_reset (); | |
262 | #endif | |
b9c4113e | 263 | |
64e971c3 RS |
264 | \f |
265 | /* Specify a different file descriptor for further input operations. */ | |
266 | ||
267 | void | |
268 | change_input_fd (fd) | |
269 | int fd; | |
270 | { | |
271 | input_fd = fd; | |
272 | } | |
273 | ||
274 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 275 | |
08633194 | 276 | void |
86a5659e JB |
277 | discard_tty_input () |
278 | { | |
fe03522b | 279 | #ifndef WINDOWSNT |
91bac16a | 280 | struct emacs_tty buf; |
86a5659e JB |
281 | |
282 | if (noninteractive) | |
283 | return; | |
284 | ||
285 | /* Discarding input is not safe when the input could contain | |
286 | replies from the X server. So don't do it. */ | |
287 | if (read_socket_hook) | |
288 | return; | |
289 | ||
290 | #ifdef VMS | |
291 | end_kbd_input (); | |
91bac16a JB |
292 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
293 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
294 | queue_kbd_input (); |
295 | #else /* not VMS */ | |
296 | #ifdef APOLLO | |
297 | { | |
298 | int zero = 0; | |
64e971c3 | 299 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
300 | } |
301 | #else /* not Apollo */ | |
fe03522b | 302 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 303 | while (dos_keyread () != -1) |
fe03522b | 304 | ; |
207bdbdb | 305 | #else /* not MSDOS */ |
91bac16a JB |
306 | EMACS_GET_TTY (input_fd, &buf); |
307 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 308 | #endif /* not MSDOS */ |
86a5659e JB |
309 | #endif /* not Apollo */ |
310 | #endif /* not VMS */ | |
fe03522b | 311 | #endif /* not WINDOWSNT */ |
86a5659e JB |
312 | } |
313 | ||
314 | #ifdef SIGTSTP | |
315 | ||
64e971c3 RS |
316 | /* Arrange for character C to be read as the next input from |
317 | the terminal. */ | |
318 | ||
dfcf069d | 319 | void |
86a5659e JB |
320 | stuff_char (c) |
321 | char c; | |
322 | { | |
23dab951 RS |
323 | if (read_socket_hook) |
324 | return; | |
325 | ||
86a5659e JB |
326 | /* Should perhaps error if in batch mode */ |
327 | #ifdef TIOCSTI | |
64e971c3 | 328 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 329 | #else /* no TIOCSTI */ |
71f06467 | 330 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
331 | #endif /* no TIOCSTI */ |
332 | } | |
333 | ||
334 | #endif /* SIGTSTP */ | |
64e971c3 | 335 | \f |
08633194 | 336 | void |
86a5659e JB |
337 | init_baud_rate () |
338 | { | |
86a5659e JB |
339 | if (noninteractive) |
340 | ospeed = 0; | |
341 | else | |
342 | { | |
dfc366c9 RS |
343 | #ifdef INIT_BAUD_RATE |
344 | INIT_BAUD_RATE (); | |
345 | #else | |
fe03522b | 346 | #ifdef DOS_NT |
207bdbdb | 347 | ospeed = 15; |
fe03522b | 348 | #else /* not DOS_NT */ |
86a5659e | 349 | #ifdef VMS |
91bac16a JB |
350 | struct sensemode sg; |
351 | ||
352 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 353 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
354 | ospeed = sg.xmit_baud; |
355 | #else /* not VMS */ | |
e04a4e0d JB |
356 | #ifdef HAVE_TERMIOS |
357 | struct termios sg; | |
91bac16a | 358 | |
71f06467 | 359 | sg.c_cflag = B9600; |
64e971c3 | 360 | tcgetattr (input_fd, &sg); |
d7272cff | 361 | ospeed = cfgetospeed (&sg); |
5baff9ce | 362 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b RS |
363 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
364 | if (ospeed == 0) | |
365 | ospeed = getobaud (sg.c_cflag); | |
366 | #endif | |
e04a4e0d JB |
367 | #else /* neither VMS nor TERMIOS */ |
368 | #ifdef HAVE_TERMIO | |
369 | struct termio sg; | |
91bac16a | 370 | |
71f06467 | 371 | sg.c_cflag = B9600; |
e04a4e0d | 372 | #ifdef HAVE_TCATTR |
64e971c3 | 373 | tcgetattr (input_fd, &sg); |
e04a4e0d | 374 | #else |
6c65530f | 375 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 376 | #endif |
91bac16a | 377 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 378 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
379 | struct sgttyb sg; |
380 | ||
381 | sg.sg_ospeed = B9600; | |
64e971c3 | 382 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 383 | abort (); |
91bac16a | 384 | ospeed = sg.sg_ospeed; |
91bac16a | 385 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 386 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 387 | #endif /* not VMS */ |
fe03522b | 388 | #endif /* not DOS_NT */ |
dfc366c9 | 389 | #endif /* not INIT_BAUD_RATE */ |
86a5659e JB |
390 | } |
391 | ||
392 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
fe03522b | 393 | ? baud_convert[ospeed] : 9600); |
86a5659e JB |
394 | if (baud_rate == 0) |
395 | baud_rate = 1200; | |
396 | } | |
397 | ||
398 | /*ARGSUSED*/ | |
dfcf069d | 399 | void |
86a5659e JB |
400 | set_exclusive_use (fd) |
401 | int fd; | |
402 | { | |
403 | #ifdef FIOCLEX | |
404 | ioctl (fd, FIOCLEX, 0); | |
405 | #endif | |
406 | /* Ok to do nothing if this feature does not exist */ | |
407 | } | |
64e971c3 | 408 | \f |
86a5659e JB |
409 | #ifndef subprocesses |
410 | ||
411 | wait_without_blocking () | |
412 | { | |
2a633456 | 413 | #ifdef BSD_SYSTEM |
86a5659e JB |
414 | wait3 (0, WNOHANG | WUNTRACED, 0); |
415 | #else | |
416 | croak ("wait_without_blocking"); | |
417 | #endif | |
418 | synch_process_alive = 0; | |
419 | } | |
420 | ||
421 | #endif /* not subprocesses */ | |
422 | ||
423 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 424 | (at least for bsd). */ |
86a5659e JB |
425 | |
426 | SIGTYPE | |
427 | wait_for_termination_signal () | |
428 | {} | |
429 | ||
430 | /* Wait for subprocess with process id `pid' to terminate and | |
431 | make sure it will get eliminated (not remain forever as a zombie) */ | |
432 | ||
08633194 | 433 | void |
86a5659e JB |
434 | wait_for_termination (pid) |
435 | int pid; | |
436 | { | |
437 | while (1) | |
438 | { | |
439 | #ifdef subprocesses | |
440 | #ifdef VMS | |
441 | int status; | |
442 | ||
986ffb24 | 443 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
444 | break; |
445 | #else /* not VMS */ | |
2a633456 | 446 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
447 | /* Note that kill returns -1 even if the process is just a zombie now. |
448 | But inevitably a SIGCHLD interrupt should be generated | |
449 | and child_sig will do wait3 and make the process go away. */ | |
450 | /* There is some indication that there is a bug involved with | |
451 | termination of subprocesses, perhaps involving a kernel bug too, | |
452 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
453 | if that causes the problem to go away or get worse. */ | |
454 | sigsetmask (sigmask (SIGCHLD)); | |
455 | if (0 > kill (pid, 0)) | |
fe03522b | 456 | { |
4c8975ad RS |
457 | sigsetmask (SIGEMPTYMASK); |
458 | kill (getpid (), SIGCHLD); | |
459 | break; | |
460 | } | |
461 | if (wait_debugging) | |
462 | sleep (1); | |
463 | else | |
464 | sigpause (SIGEMPTYMASK); | |
2a633456 | 465 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 466 | #if defined (UNIPLUS) |
4c8975ad RS |
467 | if (0 > kill (pid, 0)) |
468 | break; | |
469 | wait (0); | |
2a633456 | 470 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
fe03522b | 471 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
9ab714c7 RS |
472 | sigblock (sigmask (SIGCHLD)); |
473 | if (0 > kill (pid, 0)) | |
474 | { | |
475 | sigunblock (sigmask (SIGCHLD)); | |
476 | break; | |
477 | } | |
92c995de | 478 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 479 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
480 | #ifdef HAVE_SYSV_SIGPAUSE |
481 | sighold (SIGCHLD); | |
482 | if (0 > kill (pid, 0)) | |
483 | { | |
484 | sigrelse (SIGCHLD); | |
485 | break; | |
486 | } | |
487 | sigpause (SIGCHLD); | |
488 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
489 | #ifdef WINDOWSNT |
490 | wait (0); | |
491 | break; | |
492 | #else /* not WINDOWSNT */ | |
4c8975ad | 493 | if (0 > kill (pid, 0)) |
86a5659e | 494 | break; |
4c8975ad RS |
495 | /* Using sleep instead of pause avoids timing error. |
496 | If the inferior dies just before the sleep, | |
497 | we lose just one second. */ | |
498 | sleep (1); | |
fe03522b | 499 | #endif /* not WINDOWSNT */ |
4c8975ad | 500 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 501 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 502 | #endif /* not UNIPLUS */ |
2a633456 | 503 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
504 | #endif /* not VMS */ |
505 | #else /* not subprocesses */ | |
15614e61 RS |
506 | #if __DJGPP__ > 1 |
507 | break; | |
508 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
509 | #ifndef BSD4_1 |
510 | if (kill (pid, 0) < 0) | |
511 | break; | |
512 | wait (0); | |
513 | #else /* BSD4_1 */ | |
514 | int status; | |
515 | status = wait (0); | |
516 | if (status == pid || status == -1) | |
517 | break; | |
518 | #endif /* BSD4_1 */ | |
15614e61 | 519 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
520 | #endif /* not subprocesses */ |
521 | } | |
522 | } | |
523 | ||
524 | #ifdef subprocesses | |
525 | ||
526 | /* | |
527 | * flush any pending output | |
528 | * (may flush input as well; it does not matter the way we use it) | |
529 | */ | |
530 | ||
08633194 | 531 | void |
86a5659e JB |
532 | flush_pending_output (channel) |
533 | int channel; | |
534 | { | |
535 | #ifdef HAVE_TERMIOS | |
536 | /* If we try this, we get hit with SIGTTIN, because | |
537 | the child's tty belongs to the child's pgrp. */ | |
538 | #else | |
539 | #ifdef TCFLSH | |
540 | ioctl (channel, TCFLSH, 1); | |
541 | #else | |
542 | #ifdef TIOCFLUSH | |
543 | int zero = 0; | |
544 | /* 3rd arg should be ignored | |
545 | but some 4.2 kernels actually want the address of an int | |
546 | and nonzero means something different. */ | |
547 | ioctl (channel, TIOCFLUSH, &zero); | |
548 | #endif | |
549 | #endif | |
550 | #endif | |
551 | } | |
64e971c3 | 552 | \f |
86a5659e JB |
553 | #ifndef VMS |
554 | /* Set up the terminal at the other end of a pseudo-terminal that | |
555 | we will be controlling an inferior through. | |
556 | It should not echo or do line-editing, since that is done | |
557 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
558 | ||
08633194 | 559 | void |
86a5659e JB |
560 | child_setup_tty (out) |
561 | int out; | |
562 | { | |
fe03522b | 563 | #ifndef DOS_NT |
91bac16a JB |
564 | struct emacs_tty s; |
565 | ||
566 | EMACS_GET_TTY (out, &s); | |
86a5659e | 567 | |
31be8d24 | 568 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
569 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
570 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 571 | #ifdef NLDLY |
91bac16a JB |
572 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
573 | /* No output delays */ | |
9d4e5eea | 574 | #endif |
91bac16a JB |
575 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
576 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
577 | #ifdef IUCLC |
578 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
579 | #endif | |
f7097b2a RS |
580 | #ifdef ISTRIP |
581 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
582 | #endif | |
23e4c8be | 583 | #ifdef OLCUC |
9d4e5eea RS |
584 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
585 | #endif | |
f7097b2a | 586 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 587 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 588 | #if 0 |
eb8c3be9 | 589 | /* Said to be unnecessary: */ |
91bac16a JB |
590 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
591 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
592 | #endif | |
593 | ||
594 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
595 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
596 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
597 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 598 | |
86a5659e | 599 | #ifdef HPUX |
91bac16a | 600 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 601 | #endif /* HPUX */ |
91bac16a | 602 | |
86a5659e JB |
603 | #ifdef AIX |
604 | /* AIX enhanced edit loses NULs, so disable it */ | |
605 | #ifndef IBMR2AIX | |
91bac16a JB |
606 | s.main.c_line = 0; |
607 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
608 | #endif |
609 | /* Also, PTY overloads NUL and BREAK. | |
610 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
611 | s.main.c_iflag &= ~IGNBRK; |
612 | s.main.c_iflag &= ~BRKINT; | |
613 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 614 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
615 | #ifdef SIGNALS_VIA_CHARACTERS |
616 | /* the QUIT and INTR character are used in process_send_signal | |
617 | so set them here to something useful. */ | |
618 | if (s.main.c_cc[VQUIT] == 0377) | |
619 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
620 | if (s.main.c_cc[VINTR] == 0377) | |
621 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
622 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
623 | /* QUIT and INTR work better as signals, so disable character forms */ | |
624 | s.main.c_cc[VQUIT] = 0377; | |
625 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 626 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
627 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
628 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 629 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
630 | #endif /* AIX */ |
631 | ||
632 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
633 | |
634 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
635 | | CBREAK | TANDEM); | |
a00d5589 | 636 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
637 | s.main.sg_erase = 0377; |
638 | s.main.sg_kill = 0377; | |
1bf96fb5 | 639 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 640 | |
86a5659e JB |
641 | #endif /* not HAVE_TERMIO */ |
642 | ||
91bac16a | 643 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
644 | |
645 | #ifdef BSD4_1 | |
646 | if (interrupt_input) | |
647 | reset_sigio (); | |
648 | #endif /* BSD4_1 */ | |
649 | #ifdef RTU | |
650 | { | |
651 | int zero = 0; | |
652 | ioctl (out, FIOASYNC, &zero); | |
653 | } | |
654 | #endif /* RTU */ | |
fe03522b | 655 | #endif /* not DOS_NT */ |
86a5659e JB |
656 | } |
657 | #endif /* not VMS */ | |
658 | ||
659 | #endif /* subprocesses */ | |
64e971c3 | 660 | \f |
86a5659e JB |
661 | /* Record a signal code and the handler for it. */ |
662 | struct save_signal | |
663 | { | |
664 | int code; | |
35a05cca | 665 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
666 | }; |
667 | ||
35a05cca AS |
668 | static void save_signal_handlers P_ ((struct save_signal *)); |
669 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
670 | ||
86a5659e JB |
671 | /* Suspend the Emacs process; give terminal to its superior. */ |
672 | ||
08633194 | 673 | void |
86a5659e JB |
674 | sys_suspend () |
675 | { | |
676 | #ifdef VMS | |
88191e36 RS |
677 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
678 | to the current emacs as a cheaper than starting a whole new process. This | |
679 | is set up by KEPTEDITOR.COM. */ | |
680 | unsigned long parent_id, foster_parent_id; | |
681 | char *fpid_string; | |
682 | ||
683 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
684 | if (fpid_string != NULL) | |
685 | { | |
686 | sscanf (fpid_string, "%x", &foster_parent_id); | |
687 | if (foster_parent_id != 0) | |
688 | parent_id = foster_parent_id; | |
689 | else | |
690 | parent_id = getppid (); | |
691 | } | |
692 | else | |
693 | parent_id = getppid (); | |
694 | ||
9ac0d9e0 | 695 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 696 | |
86a5659e JB |
697 | if (parent_id && parent_id != 0xffffffff) |
698 | { | |
699 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
700 | int status = LIB$ATTACH (&parent_id) & 1; | |
701 | signal (SIGINT, oldsig); | |
702 | return status; | |
703 | } | |
704 | else | |
705 | { | |
706 | struct { | |
707 | int l; | |
708 | char *a; | |
709 | } d_prompt; | |
710 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
711 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 712 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
713 | return 1; |
714 | } | |
715 | return -1; | |
716 | #else | |
c4ea52a6 | 717 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 718 | |
5a570e37 | 719 | { |
e89a2cd5 | 720 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
721 | EMACS_KILLPG (pgrp, SIGTSTP); |
722 | } | |
86a5659e JB |
723 | |
724 | #else /* No SIGTSTP */ | |
725 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
726 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
727 | kill (getpid (), SIGQUIT); | |
728 | ||
729 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
730 | ||
731 | /* On a system where suspending is not implemented, | |
732 | instead fork a subshell and let it talk directly to the terminal | |
733 | while we wait. */ | |
a0932daa KH |
734 | sys_subshell (); |
735 | ||
736 | #endif /* no USG_JOBCTRL */ | |
737 | #endif /* no SIGTSTP */ | |
738 | #endif /* not VMS */ | |
739 | } | |
740 | ||
741 | /* Fork a subshell. */ | |
742 | ||
08633194 | 743 | void |
a0932daa KH |
744 | sys_subshell () |
745 | { | |
c4ea52a6 RS |
746 | #ifdef macintosh |
747 | error ("Can't spawn subshell"); | |
748 | #else | |
a0932daa | 749 | #ifndef VMS |
ad00c243 | 750 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
751 | int st; |
752 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
753 | #endif | |
efa04277 | 754 | int pid; |
86a5659e | 755 | struct save_signal saved_handlers[5]; |
efa04277 RS |
756 | Lisp_Object dir; |
757 | unsigned char *str = 0; | |
758 | int len; | |
86a5659e JB |
759 | |
760 | saved_handlers[0].code = SIGINT; | |
761 | saved_handlers[1].code = SIGQUIT; | |
762 | saved_handlers[2].code = SIGTERM; | |
763 | #ifdef SIGIO | |
764 | saved_handlers[3].code = SIGIO; | |
765 | saved_handlers[4].code = 0; | |
766 | #else | |
767 | saved_handlers[3].code = 0; | |
768 | #endif | |
769 | ||
efa04277 RS |
770 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
771 | which somehow wedges the hp compiler. So instead... */ | |
772 | ||
773 | dir = intern ("default-directory"); | |
0e7e7a58 | 774 | if (NILP (Fboundp (dir))) |
efa04277 RS |
775 | goto xyzzy; |
776 | dir = Fsymbol_value (dir); | |
914e81a2 | 777 | if (!STRINGP (dir)) |
efa04277 RS |
778 | goto xyzzy; |
779 | ||
780 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
781 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
782 | len = XSTRING (dir)->size; | |
783 | bcopy (XSTRING (dir)->data, str, len); | |
784 | if (str[len - 1] != '/') str[len++] = '/'; | |
785 | str[len] = 0; | |
786 | xyzzy: | |
787 | ||
ad00c243 | 788 | #ifdef DOS_NT |
7964ba9e | 789 | pid = 0; |
718ca3cf RS |
790 | #if __DJGPP__ > 1 |
791 | save_signal_handlers (saved_handlers); | |
792 | synch_process_alive = 1; | |
793 | #endif /* __DJGPP__ > 1 */ | |
7964ba9e | 794 | #else |
efa04277 | 795 | pid = vfork (); |
86a5659e JB |
796 | if (pid == -1) |
797 | error ("Can't spawn subshell"); | |
7964ba9e RS |
798 | #endif |
799 | ||
86a5659e JB |
800 | if (pid == 0) |
801 | { | |
7964ba9e | 802 | char *sh = 0; |
86a5659e | 803 | |
ad00c243 | 804 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 805 | getwd (oldwd); |
7964ba9e RS |
806 | if (sh == 0) |
807 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 808 | #endif |
7964ba9e RS |
809 | if (sh == 0) |
810 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
811 | if (sh == 0) |
812 | sh = "sh"; | |
207bdbdb | 813 | |
86a5659e | 814 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 815 | if (str) |
074c438c | 816 | chdir ((char *) str); |
efa04277 | 817 | |
86a5659e JB |
818 | #ifdef subprocesses |
819 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
820 | #endif | |
1593c2fe | 821 | |
6f8b4d01 | 822 | #ifdef SET_EMACS_PRIORITY |
1593c2fe JB |
823 | { |
824 | extern int emacs_priority; | |
825 | ||
6f8b4d01 | 826 | if (emacs_priority < 0) |
1593c2fe JB |
827 | nice (-emacs_priority); |
828 | } | |
829 | #endif | |
830 | ||
fe03522b | 831 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
207bdbdb RS |
832 | st = system (sh); |
833 | chdir (oldwd); | |
7964ba9e | 834 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 835 | if (st) |
fe03522b | 836 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 837 | #endif |
207bdbdb | 838 | #else /* not MSDOS */ |
fe03522b | 839 | #ifdef WINDOWSNT |
fe03522b RS |
840 | /* Waits for process completion */ |
841 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 842 | chdir (oldwd); |
fe03522b RS |
843 | if (pid == -1) |
844 | write (1, "Can't execute subshell", 22); | |
fe03522b | 845 | #else /* not WINDOWSNT */ |
86a5659e JB |
846 | execlp (sh, sh, 0); |
847 | write (1, "Can't execute subshell", 22); | |
848 | _exit (1); | |
fe03522b | 849 | #endif /* not WINDOWSNT */ |
207bdbdb | 850 | #endif /* not MSDOS */ |
86a5659e JB |
851 | } |
852 | ||
718ca3cf RS |
853 | /* Do this now if we did not do it before. */ |
854 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 855 | save_signal_handlers (saved_handlers); |
ffafc793 | 856 | synch_process_alive = 1; |
718ca3cf RS |
857 | #endif |
858 | ||
ad00c243 | 859 | #ifndef DOS_NT |
86a5659e | 860 | wait_for_termination (pid); |
7964ba9e | 861 | #endif |
86a5659e | 862 | restore_signal_handlers (saved_handlers); |
718ca3cf | 863 | synch_process_alive = 0; |
a0932daa | 864 | #endif /* !VMS */ |
c4ea52a6 | 865 | #endif /* !macintosh */ |
86a5659e JB |
866 | } |
867 | ||
35a05cca | 868 | static void |
86a5659e JB |
869 | save_signal_handlers (saved_handlers) |
870 | struct save_signal *saved_handlers; | |
871 | { | |
872 | while (saved_handlers->code) | |
873 | { | |
508b171c | 874 | saved_handlers->handler |
35a05cca | 875 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
876 | saved_handlers++; |
877 | } | |
878 | } | |
879 | ||
35a05cca | 880 | static void |
86a5659e JB |
881 | restore_signal_handlers (saved_handlers) |
882 | struct save_signal *saved_handlers; | |
883 | { | |
884 | while (saved_handlers->code) | |
885 | { | |
886 | signal (saved_handlers->code, saved_handlers->handler); | |
887 | saved_handlers++; | |
888 | } | |
889 | } | |
890 | \f | |
891 | #ifdef F_SETFL | |
892 | ||
893 | int old_fcntl_flags; | |
894 | ||
08633194 | 895 | void |
23dab951 RS |
896 | init_sigio (fd) |
897 | int fd; | |
86a5659e JB |
898 | { |
899 | #ifdef FASYNC | |
23dab951 RS |
900 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
901 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 902 | #endif |
23dab951 | 903 | interrupts_deferred = 0; |
86a5659e JB |
904 | } |
905 | ||
590034f9 | 906 | void |
86a5659e JB |
907 | reset_sigio () |
908 | { | |
909 | unrequest_sigio (); | |
910 | } | |
911 | ||
eb8c3be9 | 912 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e | 913 | |
08633194 | 914 | void |
86a5659e JB |
915 | request_sigio () |
916 | { | |
23dab951 RS |
917 | if (read_socket_hook) |
918 | return; | |
919 | ||
86a5659e | 920 | #ifdef SIGWINCH |
e065a56e | 921 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 922 | #endif |
64e971c3 | 923 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
924 | |
925 | interrupts_deferred = 0; | |
926 | } | |
927 | ||
08633194 | 928 | void |
86a5659e JB |
929 | unrequest_sigio () |
930 | { | |
23dab951 RS |
931 | if (read_socket_hook) |
932 | return; | |
933 | ||
86a5659e | 934 | #ifdef SIGWINCH |
e065a56e | 935 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 936 | #endif |
64e971c3 | 937 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
938 | interrupts_deferred = 1; |
939 | } | |
940 | ||
941 | #else /* no FASYNC */ | |
942 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
943 | ||
08633194 | 944 | void |
86a5659e JB |
945 | request_sigio () |
946 | { | |
947 | int on = 1; | |
23dab951 RS |
948 | |
949 | if (read_socket_hook) | |
950 | return; | |
951 | ||
64e971c3 | 952 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
953 | interrupts_deferred = 0; |
954 | } | |
955 | ||
08633194 | 956 | void |
86a5659e JB |
957 | unrequest_sigio () |
958 | { | |
959 | int off = 0; | |
960 | ||
23dab951 RS |
961 | if (read_socket_hook) |
962 | return; | |
963 | ||
64e971c3 | 964 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
965 | interrupts_deferred = 1; |
966 | } | |
967 | ||
968 | #else /* not FASYNC, not STRIDE */ | |
969 | ||
25ab68af RS |
970 | #ifdef _CX_UX |
971 | ||
972 | #include <termios.h> | |
973 | ||
08633194 | 974 | void |
25ab68af RS |
975 | request_sigio () |
976 | { | |
977 | int on = 1; | |
978 | sigset_t st; | |
979 | ||
23dab951 RS |
980 | if (read_socket_hook) |
981 | return; | |
982 | ||
c4ea52a6 RS |
983 | sigemptyset (&st); |
984 | sigaddset (&st, SIGIO); | |
25ab68af RS |
985 | ioctl (input_fd, FIOASYNC, &on); |
986 | interrupts_deferred = 0; | |
c4ea52a6 | 987 | sigprocmask (SIG_UNBLOCK, &st, (sigset_t *)0); |
25ab68af RS |
988 | } |
989 | ||
08633194 | 990 | void |
25ab68af RS |
991 | unrequest_sigio () |
992 | { | |
993 | int off = 0; | |
994 | ||
23dab951 RS |
995 | if (read_socket_hook) |
996 | return; | |
997 | ||
25ab68af RS |
998 | ioctl (input_fd, FIOASYNC, &off); |
999 | interrupts_deferred = 1; | |
1000 | } | |
1001 | ||
1002 | #else /* ! _CX_UX */ | |
1003 | ||
08633194 | 1004 | void |
86a5659e JB |
1005 | request_sigio () |
1006 | { | |
23dab951 RS |
1007 | if (read_socket_hook) |
1008 | return; | |
1009 | ||
86a5659e JB |
1010 | croak ("request_sigio"); |
1011 | } | |
1012 | ||
08633194 | 1013 | void |
86a5659e JB |
1014 | unrequest_sigio () |
1015 | { | |
23dab951 RS |
1016 | if (read_socket_hook) |
1017 | return; | |
1018 | ||
86a5659e JB |
1019 | croak ("unrequest_sigio"); |
1020 | } | |
1021 | ||
25ab68af | 1022 | #endif /* _CX_UX */ |
86a5659e JB |
1023 | #endif /* STRIDE */ |
1024 | #endif /* FASYNC */ | |
1025 | #endif /* F_SETFL */ | |
1026 | \f | |
9ae8f997 JB |
1027 | /* Saving and restoring the process group of Emacs's terminal. */ |
1028 | ||
0ba73609 | 1029 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1030 | |
1031 | /* The process group of which Emacs was a member when it initially | |
1032 | started. | |
1033 | ||
1034 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1035 | getpid ()), then we know we're running under a shell with job | |
1036 | control (Emacs would never be run as part of a pipeline). | |
1037 | Everything is fine. | |
1038 | ||
1039 | If Emacs was not in its own process group, then we know we're | |
1040 | running under a shell (or a caller) that doesn't know how to | |
1041 | separate itself from Emacs (like sh). Emacs must be in its own | |
1042 | process group in order to receive SIGIO correctly. In this | |
1043 | situation, we put ourselves in our own pgroup, forcibly set the | |
1044 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1045 | the tty's pgroup just like any other terminal setting. If | |
1046 | inherited_group was not the tty's pgroup, then we'll get a | |
1047 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
1048 | it goes foreground in the future, which is what should happen. */ | |
1049 | int inherited_pgroup; | |
1050 | ||
1051 | /* Split off the foreground process group to Emacs alone. | |
1052 | When we are in the foreground, but not started in our own process | |
1053 | group, redirect the TTY to point to our own process group. We need | |
1054 | to be in our own process group to receive SIGIO properly. */ | |
dfcf069d | 1055 | void |
9ae8f997 JB |
1056 | narrow_foreground_group () |
1057 | { | |
1058 | int me = getpid (); | |
1059 | ||
1060 | setpgrp (0, inherited_pgroup); | |
1061 | if (inherited_pgroup != me) | |
64e971c3 | 1062 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
1063 | setpgrp (0, me); |
1064 | } | |
1065 | ||
1066 | /* Set the tty to our original foreground group. */ | |
dfcf069d | 1067 | void |
9ae8f997 JB |
1068 | widen_foreground_group () |
1069 | { | |
1070 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 1071 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
1072 | setpgrp (0, inherited_pgroup); |
1073 | } | |
1074 | ||
0ba73609 | 1075 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1076 | \f |
68936329 JB |
1077 | /* Getting and setting emacs_tty structures. */ |
1078 | ||
1079 | /* Set *TC to the parameters associated with the terminal FD. | |
1080 | Return zero if all's well, or -1 if we ran into an error we | |
1081 | couldn't deal with. */ | |
1082 | int | |
1083 | emacs_get_tty (fd, settings) | |
1084 | int fd; | |
1085 | struct emacs_tty *settings; | |
1086 | { | |
1087 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1088 | #ifdef HAVE_TCATTR | |
1089 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1d9f9f9e | 1090 | bzero (&settings->main, sizeof (settings->main)); |
68936329 JB |
1091 | if (tcgetattr (fd, &settings->main) < 0) |
1092 | return -1; | |
1093 | ||
1094 | #else | |
1095 | #ifdef HAVE_TERMIO | |
1096 | /* The SYSV-style interface? */ | |
1097 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1098 | return -1; | |
1099 | ||
1100 | #else | |
1101 | #ifdef VMS | |
1102 | /* Vehemently Monstrous System? :-) */ | |
1103 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1104 | &settings->main.class, 12, 0, 0, 0, 0) | |
1105 | & 1)) | |
1106 | return -1; | |
1107 | ||
1108 | #else | |
fe03522b | 1109 | #ifndef DOS_NT |
68936329 JB |
1110 | /* I give up - I hope you have the BSD ioctls. */ |
1111 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1112 | return -1; | |
fe03522b | 1113 | #endif /* not DOS_NT */ |
68936329 JB |
1114 | #endif |
1115 | #endif | |
1116 | #endif | |
1117 | ||
1118 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1119 | #ifdef HAVE_LTCHARS |
68936329 JB |
1120 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1121 | return -1; | |
1122 | #endif | |
1123 | ||
1124 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1125 | #ifdef HAVE_TCHARS |
68936329 JB |
1126 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1127 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1128 | return -1; | |
1129 | #endif | |
1130 | ||
1131 | /* We have survived the tempest. */ | |
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | ||
1136 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1137 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1138 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1139 | |
68936329 | 1140 | int |
394049ec | 1141 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1142 | int fd; |
1143 | struct emacs_tty *settings; | |
394049ec | 1144 | int flushp; |
68936329 JB |
1145 | { |
1146 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1147 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1148 | int i; |
68936329 JB |
1149 | /* We have those nifty POSIX tcmumbleattr functions. |
1150 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 1151 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
1152 | able to perform any of the requested actions, even if some |
1153 | of the requested actions could not be performed. | |
1154 | We must read settings back to ensure tty setup properly. | |
1155 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1156 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1157 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1158 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1159 | { |
1160 | if (errno == EINTR) | |
1161 | continue; | |
1162 | else | |
1163 | return -1; | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | struct termios new; | |
1168 | ||
1d9f9f9e | 1169 | bzero (&new, sizeof (new)); |
68936329 JB |
1170 | /* Get the current settings, and see if they're what we asked for. */ |
1171 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1172 | /* We cannot use memcmp on the whole structure here because under |
1173 | * aix386 the termios structure has some reserved field that may | |
1174 | * not be filled in. | |
1175 | */ | |
1176 | if ( new.c_iflag == settings->main.c_iflag | |
1177 | && new.c_oflag == settings->main.c_oflag | |
1178 | && new.c_cflag == settings->main.c_cflag | |
1179 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 1180 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 1181 | break; |
e6cc3307 RS |
1182 | else |
1183 | continue; | |
68936329 JB |
1184 | } |
1185 | ||
1186 | #else | |
1187 | #ifdef HAVE_TERMIO | |
1188 | /* The SYSV-style interface? */ | |
394049ec | 1189 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1190 | return -1; |
1191 | ||
1192 | #else | |
1193 | #ifdef VMS | |
1194 | /* Vehemently Monstrous System? :-) */ | |
1195 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1196 | &settings->main.class, 12, 0, 0, 0, 0) | |
1197 | & 1)) | |
1198 | return -1; | |
1199 | ||
1200 | #else | |
fe03522b | 1201 | #ifndef DOS_NT |
68936329 | 1202 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1203 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1204 | return -1; |
fe03522b | 1205 | #endif /* not DOS_NT */ |
68936329 JB |
1206 | |
1207 | #endif | |
1208 | #endif | |
1209 | #endif | |
1210 | ||
1211 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1212 | #ifdef HAVE_LTCHARS |
68936329 JB |
1213 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1214 | return -1; | |
1215 | #endif | |
1216 | ||
1217 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1218 | #ifdef HAVE_TCHARS |
68936329 JB |
1219 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1220 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1221 | return -1; | |
1222 | #endif | |
1223 | ||
1224 | /* We have survived the tempest. */ | |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | \f | |
91bac16a JB |
1229 | /* The initial tty mode bits */ |
1230 | struct emacs_tty old_tty; | |
86a5659e | 1231 | |
7e32a4fb KH |
1232 | /* 1 if we have been through init_sys_modes. */ |
1233 | int term_initted; | |
1234 | ||
1235 | /* 1 if outer tty status has been recorded. */ | |
1236 | int old_tty_valid; | |
86a5659e | 1237 | |
91bac16a JB |
1238 | #ifdef BSD4_1 |
1239 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1240 | sigio. */ | |
1241 | int lmode; | |
1242 | #endif | |
1243 | ||
46f2fdac | 1244 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1245 | #ifdef F_SETOWN |
1246 | int old_fcntl_owner; | |
1247 | #endif /* F_SETOWN */ | |
46f2fdac | 1248 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1249 | |
86a5659e JB |
1250 | /* This may also be defined in stdio, |
1251 | but if so, this does no harm, | |
1252 | and using the same name avoids wasting the other one's space. */ | |
1253 | ||
6a0d0ed3 KH |
1254 | #ifdef nec_ews_svr4 |
1255 | extern char *_sobuf ; | |
1256 | #else | |
86a5659e JB |
1257 | #if defined (USG) || defined (DGUX) |
1258 | unsigned char _sobuf[BUFSIZ+8]; | |
1259 | #else | |
1260 | char _sobuf[BUFSIZ]; | |
1261 | #endif | |
6a0d0ed3 | 1262 | #endif |
86a5659e | 1263 | |
50b8cf60 | 1264 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1265 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1266 | #endif | |
50b8cf60 | 1267 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1268 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
86a5659e JB |
1269 | #endif |
1270 | ||
08633194 | 1271 | void |
86a5659e JB |
1272 | init_sys_modes () |
1273 | { | |
91bac16a JB |
1274 | struct emacs_tty tty; |
1275 | ||
c4ea52a6 RS |
1276 | #ifdef macintosh |
1277 | Vwindow_system = intern ("mac"); | |
1278 | Vwindow_system_version = make_number (1); | |
1279 | ||
1280 | /* cus-start.el complains if delete-exited-processes and x-bitmap-file-path not defined */ | |
1281 | #ifndef subprocesses | |
1282 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
1283 | "*Non-nil means delete processes immediately when they exit.\n\ | |
1284 | nil means don't delete them until `list-processes' is run."); | |
1285 | delete_exited_processes = 0; | |
1286 | #endif | |
1287 | ||
1288 | #ifndef HAVE_X_WINDOWS | |
1289 | DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path, | |
1290 | "List of directories to search for bitmap files for X."); | |
1291 | Vx_bitmap_file_path = decode_env_path ((char *) 0, "."); | |
1292 | #endif | |
1293 | ||
1294 | #endif /* not macintosh */ | |
1295 | ||
86a5659e JB |
1296 | #ifdef VMS |
1297 | #if 0 | |
1298 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1299 | extern int (*interrupt_signal) (); | |
1300 | #endif | |
1301 | #endif | |
1302 | ||
4ec5cb58 RS |
1303 | Vtty_erase_char = Qnil; |
1304 | ||
86a5659e JB |
1305 | if (noninteractive) |
1306 | return; | |
1307 | ||
1308 | #ifdef VMS | |
1309 | if (!input_ef) | |
1310 | input_ef = get_kbd_event_flag (); | |
1311 | /* LIB$GET_EF (&input_ef); */ | |
1312 | SYS$CLREF (input_ef); | |
1313 | waiting_for_ast = 0; | |
1314 | if (!timer_ef) | |
1315 | timer_ef = get_timer_event_flag (); | |
1316 | /* LIB$GET_EF (&timer_ef); */ | |
1317 | SYS$CLREF (timer_ef); | |
210b2b4f | 1318 | #if 0 |
86a5659e JB |
1319 | if (!process_ef) |
1320 | { | |
1321 | LIB$GET_EF (&process_ef); | |
1322 | SYS$CLREF (process_ef); | |
1323 | } | |
1324 | if (input_ef / 32 != process_ef / 32) | |
1325 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1326 | #endif |
86a5659e | 1327 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1328 | croak ("Input and timer event flags in different clusters."); |
1329 | #if 0 | |
86a5659e JB |
1330 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1331 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1332 | #endif |
86a5659e JB |
1333 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1334 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1335 | #ifndef VMS4_4 |
1336 | sys_access_reinit (); | |
1337 | #endif | |
86a5659e | 1338 | #endif /* not VMS */ |
91bac16a | 1339 | |
0ba73609 | 1340 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1341 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1342 | narrow_foreground_group (); | |
1343 | #endif | |
1344 | ||
23cafe43 | 1345 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1346 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1347 | needs the initialization code below. */ | |
86a5659e | 1348 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1349 | #endif |
86a5659e | 1350 | { |
23dab951 RS |
1351 | EMACS_GET_TTY (input_fd, &old_tty); |
1352 | ||
7e32a4fb KH |
1353 | old_tty_valid = 1; |
1354 | ||
91bac16a | 1355 | tty = old_tty; |
86a5659e | 1356 | |
31be8d24 | 1357 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2e34157c | 1358 | XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); |
4ec5cb58 | 1359 | |
421dd92f RS |
1360 | #ifdef DGUX |
1361 | /* This allows meta to be sent on 8th bit. */ | |
1362 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1363 | #endif | |
91bac16a JB |
1364 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1365 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1366 | #ifdef INLCR /* I'm just being cautious, |
1367 | since I can't check how widespread INLCR is--rms. */ | |
1368 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
1369 | #endif | |
86a5659e | 1370 | #ifdef ISTRIP |
91bac16a | 1371 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1372 | #endif |
91bac16a JB |
1373 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1374 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1375 | #ifdef IEXTEN |
b26bc18b | 1376 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1377 | #endif |
91bac16a | 1378 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1379 | if (flow_control) |
1380 | { | |
91bac16a | 1381 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1382 | #ifdef IXANY |
91bac16a | 1383 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1384 | #endif /* IXANY */ |
1385 | } | |
1386 | else | |
91bac16a JB |
1387 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1388 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1389 | on output */ | |
1390 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1391 | #ifdef CS8 |
1392 | if (meta_key) | |
1393 | { | |
91bac16a JB |
1394 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1395 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1396 | } |
1397 | #endif | |
91bac16a | 1398 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1399 | /* Set up C-g for both SIGQUIT and SIGINT. |
1400 | We don't know which we will get, but we handle both alike | |
1401 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1402 | tty.main.c_cc[VQUIT] = quit_char; |
1403 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1404 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1405 | #ifdef VSWTCH |
e2b40c23 | 1406 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1407 | of C-z */ |
86a5659e | 1408 | #endif /* VSWTCH */ |
c179a6d1 | 1409 | |
86a5659e | 1410 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1411 | #ifdef VSUSP |
e2b40c23 | 1412 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1413 | #endif /* VSUSP */ |
1414 | #ifdef V_DSUSP | |
e2b40c23 | 1415 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1416 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1417 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1418 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1419 | #endif /* VDSUSP */ | |
92c995de RS |
1420 | #ifdef VLNEXT |
1421 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1422 | #endif /* VLNEXT */ | |
1423 | #ifdef VREPRINT | |
1424 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1425 | #endif /* VREPRINT */ | |
1426 | #ifdef VWERASE | |
1427 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1428 | #endif /* VWERASE */ | |
1429 | #ifdef VDISCARD | |
1430 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1431 | #endif /* VDISCARD */ | |
c179a6d1 RS |
1432 | |
1433 | if (flow_control) | |
1434 | { | |
421dd92f | 1435 | #ifdef VSTART |
c179a6d1 | 1436 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1437 | #endif /* VSTART */ |
1438 | #ifdef VSTOP | |
c179a6d1 | 1439 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1440 | #endif /* VSTOP */ |
c179a6d1 RS |
1441 | } |
1442 | else | |
1443 | { | |
1444 | #ifdef VSTART | |
1445 | tty.main.c_cc[VSTART] = CDISABLE; | |
1446 | #endif /* VSTART */ | |
1447 | #ifdef VSTOP | |
1448 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1449 | #endif /* VSTOP */ | |
1450 | } | |
86a5659e | 1451 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1452 | |
441f6399 | 1453 | #ifdef SET_LINE_DISCIPLINE |
ea5a0917 | 1454 | /* Need to explicitly request TERMIODISC line discipline or |
441f6399 RS |
1455 | Ultrix's termios does not work correctly. */ |
1456 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1457 | #endif | |
86a5659e JB |
1458 | #ifdef AIX |
1459 | #ifndef IBMR2AIX | |
441f6399 | 1460 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1461 | tty.main.c_line = 0; |
1462 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1463 | #else |
91bac16a JB |
1464 | tty.main.c_cc[VSTRT] = 255; |
1465 | tty.main.c_cc[VSTOP] = 255; | |
1466 | tty.main.c_cc[VSUSP] = 255; | |
1467 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e | 1468 | #endif /* IBMR2AIX */ |
ac567c95 RS |
1469 | if (flow_control) |
1470 | { | |
1471 | #ifdef VSTART | |
1472 | tty.main.c_cc[VSTART] = '\021'; | |
1473 | #endif /* VSTART */ | |
1474 | #ifdef VSTOP | |
1475 | tty.main.c_cc[VSTOP] = '\023'; | |
1476 | #endif /* VSTOP */ | |
1477 | } | |
86a5659e JB |
1478 | /* Also, PTY overloads NUL and BREAK. |
1479 | don't ignore break, but don't signal either, so it looks like NUL. | |
1480 | This really serves a purpose only if running in an XTERM window | |
1481 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1482 | tty.main.c_iflag &= ~IGNBRK; |
1483 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1484 | #endif |
1485 | #else /* if not HAVE_TERMIO */ | |
1486 | #ifdef VMS | |
91bac16a | 1487 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1488 | if (meta_key) |
986ffb24 | 1489 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1490 | if (flow_control) |
91bac16a | 1491 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1492 | else |
91bac16a JB |
1493 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1494 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1495 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1496 | #ifndef DOS_NT |
a61e51f0 | 1497 | XSETINT (Vtty_erase_char, tty.main.sg_erase); |
91bac16a | 1498 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1499 | if (meta_key) |
91bac16a JB |
1500 | tty.main.sg_flags |= ANYP; |
1501 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1502 | #endif /* not DOS_NT */ |
86a5659e JB |
1503 | #endif /* not VMS (BSD, that is) */ |
1504 | #endif /* not HAVE_TERMIO */ | |
1505 | ||
91bac16a JB |
1506 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1507 | and turn off start and stop chars, etc. If not going to use | |
1508 | CBREAK mode, do this anyway so as to turn off local flow | |
1509 | control for user coming over network on 4.2; in this case, | |
1510 | only t_stopc and t_startc really matter. */ | |
1511 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1512 | #ifdef HAVE_TCHARS |
91bac16a JB |
1513 | /* Note: if not using CBREAK mode, it makes no difference how we |
1514 | set this */ | |
1515 | tty.tchars = new_tchars; | |
1516 | tty.tchars.t_intrc = quit_char; | |
1517 | if (flow_control) | |
1518 | { | |
1519 | tty.tchars.t_startc = '\021'; | |
1520 | tty.tchars.t_stopc = '\023'; | |
1521 | } | |
1522 | ||
91bac16a | 1523 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1524 | #ifdef ultrix |
1525 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1526 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1527 | tty.lmode &= ~LLITOUT; | |
1528 | #endif | |
91bac16a JB |
1529 | |
1530 | #ifdef BSD4_1 | |
1531 | lmode = tty.lmode; | |
1532 | #endif | |
1533 | ||
50b8cf60 | 1534 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1535 | #endif /* not HAVE_TERMIO */ |
1536 | ||
50b8cf60 | 1537 | #ifdef HAVE_LTCHARS |
91bac16a | 1538 | tty.ltchars = new_ltchars; |
50b8cf60 | 1539 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1540 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1541 | if (!term_initted) |
1542 | internal_terminal_init (); | |
207bdbdb RS |
1543 | dos_ttraw (); |
1544 | #endif | |
91bac16a JB |
1545 | |
1546 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1547 | |
1548 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1549 | we have an unlocked terminal at the start. */ |
91bac16a | 1550 | |
86a5659e | 1551 | #ifdef TCXONC |
64e971c3 | 1552 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1553 | #endif |
1554 | #ifndef APOLLO | |
1555 | #ifdef TIOCSTART | |
64e971c3 | 1556 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1557 | #endif |
1558 | #endif | |
1559 | ||
d228f207 | 1560 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1561 | #ifdef TCOON |
d228f207 RS |
1562 | if (!flow_control) tcflow (input_fd, TCOON); |
1563 | #endif | |
51417996 | 1564 | #endif |
d228f207 | 1565 | |
b97ab886 | 1566 | #ifdef AIXHFT |
86a5659e JB |
1567 | hft_init (); |
1568 | #ifdef IBMR2AIX | |
1569 | { | |
1570 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1571 | to be only LF. This is the way that is done. */ | |
1572 | struct termio tty; | |
1573 | ||
1574 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1575 | write (1, "\033[20l", 5); | |
1576 | } | |
1577 | #endif | |
b97ab886 | 1578 | #endif /* AIXHFT */ |
86a5659e | 1579 | |
86a5659e JB |
1580 | #ifdef VMS |
1581 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1582 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1583 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1584 | */ | |
1585 | queue_kbd_input (0); | |
1586 | #endif /* VMS */ | |
1587 | } | |
1588 | ||
1589 | #ifdef F_SETFL | |
46f2fdac | 1590 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1591 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1592 | if (interrupt_input |
1593 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1594 | { |
64e971c3 RS |
1595 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1596 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1597 | init_sigio (input_fd); |
86a5659e JB |
1598 | } |
1599 | #endif /* F_GETOWN */ | |
46f2fdac | 1600 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1601 | #endif /* F_SETFL */ |
1602 | ||
1603 | #ifdef BSD4_1 | |
1604 | if (interrupt_input) | |
23dab951 | 1605 | init_sigio (input_fd); |
86a5659e JB |
1606 | #endif |
1607 | ||
1608 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1609 | #undef _IOFBF | |
1610 | #endif | |
1611 | #ifdef _IOFBF | |
1612 | /* This symbol is defined on recent USG systems. | |
1613 | Someone says without this call USG won't really buffer the file | |
1614 | even with a call to setbuf. */ | |
074c438c | 1615 | setvbuf (stdout, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1616 | #else |
074c438c | 1617 | setbuf (stdout, (char *) _sobuf); |
86a5659e | 1618 | #endif |
23cafe43 | 1619 | #ifdef HAVE_WINDOW_SYSTEM |
c4295188 KS |
1620 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1621 | needs the initialization code below. */ | |
ad00c243 GV |
1622 | if (EQ (Vwindow_system, Qnil) |
1623 | #ifndef WINDOWSNT | |
1624 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1625 | hook, but still need the rest of the initialization code below. */ | |
1626 | && (! read_socket_hook) | |
1627 | #endif | |
1628 | ) | |
c4295188 | 1629 | #endif |
4b311aaf RS |
1630 | set_terminal_modes (); |
1631 | ||
045942b2 EZ |
1632 | if (!term_initted |
1633 | && FRAMEP (Vterminal_frame) | |
1634 | && FRAME_TERMCAP_P (XFRAME (Vterminal_frame))) | |
1635 | init_frame_faces (XFRAME (Vterminal_frame)); | |
1636 | ||
86a5659e JB |
1637 | if (term_initted && no_redraw_on_reenter) |
1638 | { | |
1639 | if (display_completed) | |
1640 | direct_output_forward_char (0); | |
1641 | } | |
1642 | else | |
1643 | { | |
0137dbf7 | 1644 | frame_garbaged = 1; |
0137dbf7 JB |
1645 | if (FRAMEP (Vterminal_frame)) |
1646 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e | 1647 | } |
91bac16a | 1648 | |
86a5659e JB |
1649 | term_initted = 1; |
1650 | } | |
1651 | ||
1652 | /* Return nonzero if safe to use tabs in output. | |
1653 | At the time this is called, init_sys_modes has not been done yet. */ | |
1654 | ||
dfcf069d | 1655 | int |
86a5659e JB |
1656 | tabs_safe_p () |
1657 | { | |
91bac16a JB |
1658 | struct emacs_tty tty; |
1659 | ||
1660 | EMACS_GET_TTY (input_fd, &tty); | |
1661 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1662 | } |
73d5358f | 1663 | \f |
86a5659e | 1664 | /* Get terminal size from system. |
73d5358f RS |
1665 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1666 | We store 0 if there's no valid information. */ | |
86a5659e | 1667 | |
08633194 | 1668 | void |
0137dbf7 | 1669 | get_frame_size (widthp, heightp) |
86a5659e JB |
1670 | int *widthp, *heightp; |
1671 | { | |
86a5659e | 1672 | |
86a5659e | 1673 | #ifdef TIOCGWINSZ |
91bac16a JB |
1674 | |
1675 | /* BSD-style. */ | |
86a5659e | 1676 | struct winsize size; |
91bac16a JB |
1677 | |
1678 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1679 | *widthp = *heightp = 0; | |
1680 | else | |
1681 | { | |
1682 | *widthp = size.ws_col; | |
1683 | *heightp = size.ws_row; | |
1684 | } | |
1685 | ||
1686 | #else | |
1687 | #ifdef TIOCGSIZE | |
1688 | ||
1689 | /* SunOS - style. */ | |
1690 | struct ttysize size; | |
1691 | ||
1692 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1693 | *widthp = *heightp = 0; | |
1694 | else | |
1695 | { | |
1696 | *widthp = size.ts_cols; | |
1697 | *heightp = size.ts_lines; | |
1698 | } | |
1699 | ||
1700 | #else | |
86a5659e | 1701 | #ifdef VMS |
91bac16a JB |
1702 | |
1703 | struct sensemode tty; | |
1704 | ||
1705 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1706 | &tty.class, 12, 0, 0, 0, 0); |
1707 | *widthp = tty.scr_wid; | |
1708 | *heightp = tty.scr_len; | |
91bac16a | 1709 | |
207bdbdb RS |
1710 | #else |
1711 | #ifdef MSDOS | |
1712 | *widthp = ScreenCols (); | |
1713 | *heightp = ScreenRows (); | |
86a5659e JB |
1714 | #else /* system doesn't know size */ |
1715 | *widthp = 0; | |
1716 | *heightp = 0; | |
207bdbdb | 1717 | #endif |
91bac16a JB |
1718 | |
1719 | #endif /* not VMS */ | |
1720 | #endif /* not SunOS-style */ | |
1721 | #endif /* not BSD-style */ | |
86a5659e | 1722 | } |
91bac16a | 1723 | |
73d5358f RS |
1724 | /* Set the logical window size associated with descriptor FD |
1725 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1726 | ||
1727 | int | |
1728 | set_window_size (fd, height, width) | |
1729 | int fd, height, width; | |
1730 | { | |
1731 | #ifdef TIOCSWINSZ | |
1732 | ||
1733 | /* BSD-style. */ | |
1734 | struct winsize size; | |
1735 | size.ws_row = height; | |
1736 | size.ws_col = width; | |
1737 | ||
1738 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1739 | return 0; /* error */ | |
1740 | else | |
1741 | return 1; | |
1742 | ||
1743 | #else | |
1744 | #ifdef TIOCSSIZE | |
1745 | ||
1746 | /* SunOS - style. */ | |
1747 | struct ttysize size; | |
1748 | size.ts_lines = height; | |
1749 | size.ts_cols = width; | |
1750 | ||
1751 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1752 | return 0; | |
1753 | else | |
1754 | return 1; | |
1755 | #else | |
1756 | return -1; | |
1757 | #endif /* not SunOS-style */ | |
1758 | #endif /* not BSD-style */ | |
1759 | } | |
1760 | ||
86a5659e | 1761 | \f |
91bac16a | 1762 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1763 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
08633194 | 1764 | void |
86a5659e JB |
1765 | reset_sys_modes () |
1766 | { | |
2d064114 GM |
1767 | struct frame *sf; |
1768 | ||
86a5659e JB |
1769 | if (noninteractive) |
1770 | { | |
1771 | fflush (stdout); | |
1772 | return; | |
1773 | } | |
1774 | if (!term_initted) | |
1775 | return; | |
23cafe43 | 1776 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1777 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1778 | needs the clean-up code below. */ | |
ad00c243 GV |
1779 | if (!EQ (Vwindow_system, Qnil) |
1780 | #ifndef WINDOWSNT | |
1781 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1782 | hook, but still need the rest of the clean-up code below. */ | |
1783 | || read_socket_hook | |
1784 | #endif | |
1785 | ) | |
86a5659e | 1786 | return; |
87485d6f | 1787 | #endif |
2d064114 GM |
1788 | sf = SELECTED_FRAME (); |
1789 | cursor_to (FRAME_HEIGHT (sf) - 1, 0); | |
1790 | clear_end_of_line (FRAME_WIDTH (sf)); | |
86a5659e | 1791 | /* clear_end_of_line may move the cursor */ |
2d064114 | 1792 | cursor_to (FRAME_HEIGHT (sf) - 1, 0); |
b97ab886 | 1793 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e JB |
1794 | { |
1795 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1796 | do the LF only. Now, we need to reset it. */ | |
1797 | struct termio tty; | |
1798 | ||
1799 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1800 | write (1, "\033[20h", 5); | |
1801 | } | |
1802 | #endif | |
1803 | ||
1804 | reset_terminal_modes (); | |
1805 | fflush (stdout); | |
2a633456 | 1806 | #ifdef BSD_SYSTEM |
86a5659e JB |
1807 | #ifndef BSD4_1 |
1808 | /* Avoid possible loss of output when changing terminal modes. */ | |
1809 | fsync (fileno (stdout)); | |
1810 | #endif | |
1811 | #endif | |
91bac16a | 1812 | |
86a5659e | 1813 | #ifdef F_SETFL |
46f2fdac | 1814 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1815 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1816 | if (interrupt_input) |
1817 | { | |
1818 | reset_sigio (); | |
64e971c3 | 1819 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1820 | } |
1821 | #endif /* F_SETOWN */ | |
46f2fdac | 1822 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1823 | #ifdef O_NDELAY |
1824 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1825 | #endif | |
86a5659e JB |
1826 | #endif /* F_SETFL */ |
1827 | #ifdef BSD4_1 | |
1828 | if (interrupt_input) | |
1829 | reset_sigio (); | |
1830 | #endif /* BSD4_1 */ | |
91bac16a | 1831 | |
7e32a4fb KH |
1832 | if (old_tty_valid) |
1833 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) | |
1834 | ; | |
86a5659e | 1835 | |
207bdbdb RS |
1836 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1837 | dos_ttcooked (); | |
1838 | #endif | |
1839 | ||
441f6399 RS |
1840 | #ifdef SET_LINE_DISCIPLINE |
1841 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1842 | A different old line discipline is therefore not restored, yet. | |
1843 | Restore the old line discipline by hand. */ | |
1844 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1845 | #endif | |
1846 | ||
b97ab886 | 1847 | #ifdef AIXHFT |
86a5659e JB |
1848 | hft_reset (); |
1849 | #endif | |
9ae8f997 | 1850 | |
0ba73609 | 1851 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1852 | widen_foreground_group (); |
1853 | #endif | |
86a5659e JB |
1854 | } |
1855 | \f | |
1856 | #ifdef HAVE_PTYS | |
1857 | ||
1858 | /* Set up the proper status flags for use of a pty. */ | |
1859 | ||
08633194 | 1860 | void |
86a5659e JB |
1861 | setup_pty (fd) |
1862 | int fd; | |
1863 | { | |
1864 | /* I'm told that TOICREMOTE does not mean control chars | |
1865 | "can't be sent" but rather that they don't have | |
1866 | input-editing or signaling effects. | |
1867 | That should be good, because we have other ways | |
1868 | to do those things in Emacs. | |
1869 | However, telnet mode seems not to work on 4.2. | |
1870 | So TIOCREMOTE is turned off now. */ | |
1871 | ||
1872 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1873 | will hang. In particular, the "timeout" feature (which | |
1874 | causes a read to return if there is no data available) | |
1875 | does this. Also it is known that telnet mode will hang | |
1876 | in such a way that Emacs must be stopped (perhaps this | |
1877 | is the same problem). | |
1878 | ||
1879 | If TIOCREMOTE is turned off, then there is a bug in | |
1880 | hp-ux which sometimes loses data. Apparently the | |
1881 | code which blocks the master process when the internal | |
1882 | buffer fills up does not work. Other than this, | |
1883 | though, everything else seems to work fine. | |
1884 | ||
1885 | Since the latter lossage is more benign, we may as well | |
1886 | lose that way. -- cph */ | |
1887 | #ifdef FIONBIO | |
e20caf05 | 1888 | #if defined(SYSV_PTYS) || defined(UNIX98_PTYS) |
86a5659e JB |
1889 | { |
1890 | int on = 1; | |
1891 | ioctl (fd, FIONBIO, &on); | |
1892 | } | |
1893 | #endif | |
1894 | #endif | |
1895 | #ifdef IBMRTAIX | |
1896 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1897 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1898 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1899 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1900 | /* change this behavior, but I'm not going to hold my breath. */ | |
1901 | signal (SIGHUP, SIG_IGN); | |
1902 | #endif | |
1903 | } | |
1904 | #endif /* HAVE_PTYS */ | |
1905 | \f | |
1906 | #ifdef VMS | |
1907 | ||
1908 | /* Assigning an input channel is done at the start of Emacs execution. | |
1909 | This is called each time Emacs is resumed, also, but does nothing | |
1910 | because input_chain is no longer zero. */ | |
1911 | ||
dfcf069d | 1912 | void |
86a5659e JB |
1913 | init_vms_input () |
1914 | { | |
1915 | int status; | |
1916 | ||
91bac16a | 1917 | if (input_fd == 0) |
86a5659e | 1918 | { |
91bac16a | 1919 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1920 | if (! (status & 1)) |
1921 | LIB$STOP (status); | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | /* Deassigning the input channel is done before exiting. */ | |
1926 | ||
dfcf069d | 1927 | void |
86a5659e JB |
1928 | stop_vms_input () |
1929 | { | |
91bac16a | 1930 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1931 | } |
1932 | ||
1933 | short input_buffer; | |
1934 | ||
1935 | /* Request reading one character into the keyboard buffer. | |
1936 | This is done as soon as the buffer becomes empty. */ | |
1937 | ||
dfcf069d | 1938 | void |
86a5659e JB |
1939 | queue_kbd_input () |
1940 | { | |
1941 | int status; | |
210b2b4f JB |
1942 | extern kbd_input_ast (); |
1943 | ||
86a5659e JB |
1944 | waiting_for_ast = 0; |
1945 | stop_input = 0; | |
91bac16a | 1946 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1947 | &input_iosb, kbd_input_ast, 1, |
1948 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1949 | } | |
1950 | ||
1951 | int input_count; | |
1952 | ||
1953 | /* Ast routine that is called when keyboard input comes in | |
1954 | in accord with the SYS$QIO above. */ | |
1955 | ||
dfcf069d | 1956 | void |
86a5659e JB |
1957 | kbd_input_ast () |
1958 | { | |
1959 | register int c = -1; | |
1960 | int old_errno = errno; | |
ffd56f97 | 1961 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1962 | |
1963 | if (waiting_for_ast) | |
1964 | SYS$SETEF (input_ef); | |
1965 | waiting_for_ast = 0; | |
1966 | input_count++; | |
1967 | #ifdef ASTDEBUG | |
1968 | if (input_count == 25) | |
1969 | exit (1); | |
1970 | printf ("Ast # %d,", input_count); | |
1971 | printf (" iosb = %x, %x, %x, %x", | |
1972 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1973 | input_iosb.term); | |
1974 | #endif | |
1975 | if (input_iosb.offset) | |
1976 | { | |
1977 | c = input_buffer; | |
1978 | #ifdef ASTDEBUG | |
1979 | printf (", char = 0%o", c); | |
1980 | #endif | |
1981 | } | |
1982 | #ifdef ASTDEBUG | |
1983 | printf ("\n"); | |
1984 | fflush (stdout); | |
1985 | sleep (1); | |
1986 | #endif | |
1987 | if (! stop_input) | |
1988 | queue_kbd_input (); | |
1989 | if (c >= 0) | |
1990 | { | |
1991 | struct input_event e; | |
1992 | e.kind = ascii_keystroke; | |
c81d47b4 | 1993 | XSETINT (e.code, c); |
2d064114 | 1994 | e.frame_or_window = selected_frame; |
86a5659e JB |
1995 | kbd_buffer_store_event (&e); |
1996 | } | |
ffd56f97 JB |
1997 | if (input_available_clear_time) |
1998 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1999 | errno = old_errno; |
2000 | } | |
2001 | ||
2002 | /* Wait until there is something in kbd_buffer. */ | |
2003 | ||
dfcf069d | 2004 | void |
86a5659e JB |
2005 | wait_for_kbd_input () |
2006 | { | |
2007 | extern int have_process_input, process_exited; | |
2008 | ||
2009 | /* If already something, avoid doing system calls. */ | |
2010 | if (detect_input_pending ()) | |
2011 | { | |
2012 | return; | |
2013 | } | |
2014 | /* Clear a flag, and tell ast routine above to set it. */ | |
2015 | SYS$CLREF (input_ef); | |
2016 | waiting_for_ast = 1; | |
2017 | /* Check for timing error: ast happened while we were doing that. */ | |
2018 | if (!detect_input_pending ()) | |
2019 | { | |
2020 | /* No timing error: wait for flag to be set. */ | |
2021 | set_waiting_for_input (0); | |
2022 | SYS$WFLOR (input_ef, input_eflist); | |
2023 | clear_waiting_for_input (0); | |
2024 | if (!detect_input_pending ()) | |
2025 | /* Check for subprocess input availability */ | |
2026 | { | |
2027 | int dsp = have_process_input || process_exited; | |
2028 | ||
2029 | SYS$CLREF (process_ef); | |
2030 | if (have_process_input) | |
2031 | process_command_input (); | |
2032 | if (process_exited) | |
2033 | process_exit (); | |
2034 | if (dsp) | |
2035 | { | |
2036 | update_mode_lines++; | |
56b18525 | 2037 | prepare_menu_bars (); |
86a5659e JB |
2038 | redisplay_preserve_echo_area (); |
2039 | } | |
2040 | } | |
2041 | } | |
2042 | waiting_for_ast = 0; | |
2043 | } | |
2044 | ||
2045 | /* Get rid of any pending QIO, when we are about to suspend | |
2046 | or when we want to throw away pending input. | |
2047 | We wait for a positive sign that the AST routine has run | |
2048 | and therefore there is no I/O request queued when we return. | |
2049 | SYS$SETAST is used to avoid a timing error. */ | |
2050 | ||
dfcf069d | 2051 | void |
86a5659e JB |
2052 | end_kbd_input () |
2053 | { | |
2054 | #ifdef ASTDEBUG | |
2055 | printf ("At end_kbd_input.\n"); | |
2056 | fflush (stdout); | |
2057 | sleep (1); | |
2058 | #endif | |
2059 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
2060 | { | |
91bac16a | 2061 | SYS$CANCEL (input_fd); |
86a5659e JB |
2062 | return; |
2063 | } | |
2064 | ||
2065 | SYS$SETAST (0); | |
2066 | /* Clear a flag, and tell ast routine above to set it. */ | |
2067 | SYS$CLREF (input_ef); | |
2068 | waiting_for_ast = 1; | |
2069 | stop_input = 1; | |
91bac16a | 2070 | SYS$CANCEL (input_fd); |
86a5659e JB |
2071 | SYS$SETAST (1); |
2072 | SYS$WAITFR (input_ef); | |
2073 | waiting_for_ast = 0; | |
2074 | } | |
2075 | ||
2076 | /* Wait for either input available or time interval expiry. */ | |
2077 | ||
dfcf069d | 2078 | void |
86a5659e JB |
2079 | input_wait_timeout (timeval) |
2080 | int timeval; /* Time to wait, in seconds */ | |
2081 | { | |
2082 | int time [2]; | |
2083 | static int zero = 0; | |
2084 | static int large = -10000000; | |
2085 | ||
2086 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2087 | ||
2088 | /* If already something, avoid doing system calls. */ | |
2089 | if (detect_input_pending ()) | |
2090 | { | |
2091 | return; | |
2092 | } | |
2093 | /* Clear a flag, and tell ast routine above to set it. */ | |
2094 | SYS$CLREF (input_ef); | |
2095 | waiting_for_ast = 1; | |
2096 | /* Check for timing error: ast happened while we were doing that. */ | |
2097 | if (!detect_input_pending ()) | |
2098 | { | |
2099 | /* No timing error: wait for flag to be set. */ | |
2100 | SYS$CANTIM (1, 0); | |
2101 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2102 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2103 | } | |
2104 | waiting_for_ast = 0; | |
2105 | } | |
2106 | ||
2107 | /* The standard `sleep' routine works some other way | |
2108 | and it stops working if you have ever quit out of it. | |
2109 | This one continues to work. */ | |
2110 | ||
2111 | sys_sleep (timeval) | |
2112 | int timeval; | |
2113 | { | |
2114 | int time [2]; | |
2115 | static int zero = 0; | |
2116 | static int large = -10000000; | |
2117 | ||
2118 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2119 | ||
2120 | SYS$CANTIM (1, 0); | |
2121 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2122 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2123 | } | |
2124 | ||
08633194 | 2125 | void |
23dab951 RS |
2126 | init_sigio (fd) |
2127 | int fd; | |
86a5659e JB |
2128 | { |
2129 | request_sigio (); | |
2130 | } | |
2131 | ||
2132 | reset_sigio () | |
2133 | { | |
2134 | unrequest_sigio (); | |
2135 | } | |
2136 | ||
08633194 | 2137 | void |
86a5659e JB |
2138 | request_sigio () |
2139 | { | |
2140 | croak ("request sigio"); | |
2141 | } | |
2142 | ||
08633194 | 2143 | void |
86a5659e JB |
2144 | unrequest_sigio () |
2145 | { | |
2146 | croak ("unrequest sigio"); | |
2147 | } | |
2148 | ||
2149 | #endif /* VMS */ | |
2150 | \f | |
2151 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2152 | #ifndef CANNOT_DUMP | |
2153 | #define NEED_STARTS | |
2154 | #endif | |
2155 | ||
2156 | #ifndef SYSTEM_MALLOC | |
2157 | #ifndef NEED_STARTS | |
2158 | #define NEED_STARTS | |
2159 | #endif | |
2160 | #endif | |
2161 | ||
2162 | #ifdef NEED_STARTS | |
2163 | /* Some systems that cannot dump also cannot implement these. */ | |
2164 | ||
2165 | /* | |
2166 | * Return the address of the start of the text segment prior to | |
2167 | * doing an unexec. After unexec the return value is undefined. | |
2168 | * See crt0.c for further explanation and _start. | |
2169 | * | |
2170 | */ | |
2171 | ||
c0c9ac48 | 2172 | #if !(defined (__NetBSD__) && defined (__ELF__)) |
260fe597 | 2173 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2174 | char * |
2175 | start_of_text () | |
2176 | { | |
2177 | #ifdef TEXT_START | |
2178 | return ((char *) TEXT_START); | |
2179 | #else | |
2180 | #ifdef GOULD | |
2181 | extern csrt (); | |
2182 | return ((char *) csrt); | |
2183 | #else /* not GOULD */ | |
2184 | extern int _start (); | |
2185 | return ((char *) _start); | |
2186 | #endif /* GOULD */ | |
2187 | #endif /* TEXT_START */ | |
2188 | } | |
260fe597 | 2189 | #endif /* not HAVE_TEXT_START */ |
c0c9ac48 | 2190 | #endif |
86a5659e JB |
2191 | |
2192 | /* | |
2193 | * Return the address of the start of the data segment prior to | |
2194 | * doing an unexec. After unexec the return value is undefined. | |
2195 | * See crt0.c for further information and definition of data_start. | |
2196 | * | |
2197 | * Apparently, on BSD systems this is etext at startup. On | |
2198 | * USG systems (swapping) this is highly mmu dependent and | |
2199 | * is also dependent on whether or not the program is running | |
2200 | * with shared text. Generally there is a (possibly large) | |
2201 | * gap between end of text and start of data with shared text. | |
2202 | * | |
2203 | * On Uniplus+ systems with shared text, data starts at a | |
2204 | * fixed address. Each port (from a given oem) is generally | |
2205 | * different, and the specific value of the start of data can | |
2206 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2207 | * however the method outlined in crt0.c seems to be more portable. | |
2208 | * | |
2209 | * Probably what will have to happen when a USG unexec is available, | |
2210 | * at least on UniPlus, is temacs will have to be made unshared so | |
2211 | * that text and data are contiguous. Then once loadup is complete, | |
2212 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2213 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2214 | * will be patched by unexec to the correct value. |
2215 | * | |
2216 | */ | |
2217 | ||
2218 | char * | |
2219 | start_of_data () | |
2220 | { | |
2221 | #ifdef DATA_START | |
2222 | return ((char *) DATA_START); | |
6c65530f JB |
2223 | #else |
2224 | #ifdef ORDINARY_LINK | |
2225 | /* | |
2226 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2227 | * data_start isn't defined. We take the address of environ, which | |
2228 | * is known to live at or near the start of the system crt0.c, and | |
2229 | * we don't sweat the handful of bytes that might lose. | |
2230 | */ | |
2231 | extern char **environ; | |
2232 | ||
c4ea52a6 | 2233 | return ((char *) &environ); |
86a5659e JB |
2234 | #else |
2235 | extern int data_start; | |
2236 | return ((char *) &data_start); | |
6c65530f JB |
2237 | #endif /* ORDINARY_LINK */ |
2238 | #endif /* DATA_START */ | |
86a5659e JB |
2239 | } |
2240 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
2241 | ||
2242 | #ifndef CANNOT_DUMP | |
2243 | /* Some systems that cannot dump also cannot implement these. */ | |
2244 | ||
2245 | /* | |
2246 | * Return the address of the end of the text segment prior to | |
2247 | * doing an unexec. After unexec the return value is undefined. | |
2248 | */ | |
2249 | ||
2250 | char * | |
2251 | end_of_text () | |
2252 | { | |
2253 | #ifdef TEXT_END | |
2254 | return ((char *) TEXT_END); | |
2255 | #else | |
2256 | extern int etext; | |
2257 | return ((char *) &etext); | |
2258 | #endif | |
2259 | } | |
2260 | ||
2261 | /* | |
2262 | * Return the address of the end of the data segment prior to | |
2263 | * doing an unexec. After unexec the return value is undefined. | |
2264 | */ | |
2265 | ||
2266 | char * | |
2267 | end_of_data () | |
2268 | { | |
2269 | #ifdef DATA_END | |
2270 | return ((char *) DATA_END); | |
2271 | #else | |
2272 | extern int edata; | |
2273 | return ((char *) &edata); | |
2274 | #endif | |
2275 | } | |
2276 | ||
2277 | #endif /* not CANNOT_DUMP */ | |
2278 | \f | |
c0c86835 KH |
2279 | /* init_system_name sets up the string for the Lisp function |
2280 | system-name to return. */ | |
86a5659e JB |
2281 | |
2282 | #ifdef BSD4_1 | |
2283 | #include <whoami.h> | |
2284 | #endif | |
2285 | ||
c0c86835 | 2286 | extern Lisp_Object Vsystem_name; |
86a5659e | 2287 | |
f8a80313 | 2288 | #ifndef BSD4_1 |
f8a80313 RS |
2289 | #ifndef VMS |
2290 | #ifdef HAVE_SOCKETS | |
2291 | #include <sys/socket.h> | |
2292 | #include <netdb.h> | |
2293 | #endif /* HAVE_SOCKETS */ | |
2294 | #endif /* not VMS */ | |
f8a80313 RS |
2295 | #endif /* not BSD4_1 */ |
2296 | ||
c0c86835 KH |
2297 | void |
2298 | init_system_name () | |
86a5659e | 2299 | { |
86a5659e | 2300 | #ifdef BSD4_1 |
c0c86835 | 2301 | Vsystem_name = build_string (sysname); |
67004ffb | 2302 | #else |
67004ffb | 2303 | #ifdef VMS |
c0c86835 KH |
2304 | char *sp, *end; |
2305 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2306 | Vsystem_name = build_string ("vax-vms"); | |
2307 | else if ((end = index (sp, ':')) == 0) | |
2308 | Vsystem_name = build_string (sp); | |
2309 | else | |
2310 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2311 | #else |
210b2b4f | 2312 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2313 | struct utsname uts; |
2314 | uname (&uts); | |
2315 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2316 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2317 | unsigned int hostname_size = 256; |
c0c86835 KH |
2318 | char *hostname = (char *) alloca (hostname_size); |
2319 | ||
2320 | /* Try to get the host name; if the buffer is too short, try | |
2321 | again. Apparently, the only indication gethostname gives of | |
2322 | whether the buffer was large enough is the presence or absence | |
2323 | of a '\0' in the string. Eech. */ | |
2324 | for (;;) | |
2325 | { | |
2326 | gethostname (hostname, hostname_size - 1); | |
2327 | hostname[hostname_size - 1] = '\0'; | |
2328 | ||
2329 | /* Was the buffer large enough for the '\0'? */ | |
2330 | if (strlen (hostname) < hostname_size - 1) | |
2331 | break; | |
2332 | ||
2333 | hostname_size <<= 1; | |
2334 | hostname = (char *) alloca (hostname_size); | |
2335 | } | |
67004ffb | 2336 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2337 | /* Turn the hostname into the official, fully-qualified hostname. |
2338 | Don't do this if we're going to dump; this can confuse system | |
2339 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2340 | #ifndef CANNOT_DUMP |
c0c86835 | 2341 | if (initialized) |
67004ffb | 2342 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2343 | if (! index (hostname, '.')) |
2344 | { | |
2345 | struct hostent *hp; | |
2346 | int count; | |
2347 | for (count = 0;; count++) | |
2348 | { | |
e24f1d55 | 2349 | #ifdef TRY_AGAIN |
960d894c | 2350 | h_errno = 0; |
e24f1d55 | 2351 | #endif |
960d894c | 2352 | hp = gethostbyname (hostname); |
efa04277 | 2353 | #ifdef TRY_AGAIN |
960d894c KH |
2354 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2355 | #endif | |
2356 | break; | |
2357 | if (count >= 5) | |
2358 | break; | |
2359 | Fsleep_for (make_number (1), Qnil); | |
2360 | } | |
2361 | if (hp) | |
2362 | { | |
2363 | char *fqdn = (char *) hp->h_name; | |
2364 | char *p; | |
2365 | ||
2366 | if (!index (fqdn, '.')) | |
2367 | { | |
2368 | /* We still don't have a fully qualified domain name. | |
2369 | Try to find one in the list of alternate names */ | |
2370 | char **alias = hp->h_aliases; | |
2371 | while (*alias && !index (*alias, '.')) | |
2372 | alias++; | |
2373 | if (*alias) | |
2374 | fqdn = *alias; | |
2375 | } | |
2376 | hostname = fqdn; | |
ab1649fe | 2377 | #if 0 |
960d894c KH |
2378 | /* Convert the host name to lower case. */ |
2379 | /* Using ctype.h here would introduce a possible locale | |
2380 | dependence that is probably wrong for hostnames. */ | |
2381 | p = hostname; | |
2382 | while (*p) | |
2383 | { | |
2384 | if (*p >= 'A' && *p <= 'Z') | |
2385 | *p += 'a' - 'A'; | |
2386 | p++; | |
2387 | } | |
2388 | #endif | |
2389 | } | |
2390 | } | |
67004ffb | 2391 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2392 | /* We used to try using getdomainname here, |
2393 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2394 | getdomainname gets the NIS/YP domain which often is not the same |
2395 | as in Internet domain name. */ | |
6250a9db KH |
2396 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2397 | correct Internet domain. */ | |
0b93aa53 | 2398 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2399 | if (! index (hostname, '.')) |
2400 | { | |
2401 | /* The hostname is not fully qualified. Append the domain name. */ | |
2402 | ||
2403 | int hostlen = strlen (hostname); | |
2404 | int domain_size = 256; | |
2405 | ||
2406 | for (;;) | |
2407 | { | |
825e7e55 RS |
2408 | char *domain = (char *) alloca (domain_size + 1); |
2409 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2410 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2411 | if (sys_domain_size <= 0) | |
2412 | break; | |
2413 | if (domain_size < sys_domain_size) | |
2414 | { | |
2415 | domain_size = sys_domain_size; | |
2416 | continue; | |
2417 | } | |
b05af5d3 | 2418 | strcpy (fqdn, hostname); |
825e7e55 RS |
2419 | if (domain[0] == '.') |
2420 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2421 | else if (domain[0] != 0) |
825e7e55 RS |
2422 | { |
2423 | fqdn[hostlen] = '.'; | |
2424 | strcpy (fqdn + hostlen + 1, domain); | |
2425 | } | |
b05af5d3 PE |
2426 | hostname = fqdn; |
2427 | break; | |
2428 | } | |
2429 | } | |
0b93aa53 | 2430 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2431 | #endif /* 0 */ |
c0c86835 | 2432 | Vsystem_name = build_string (hostname); |
67004ffb | 2433 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2434 | #endif /* VMS */ |
67004ffb | 2435 | #endif /* BSD4_1 */ |
c0c86835 KH |
2436 | { |
2437 | unsigned char *p; | |
2438 | for (p = XSTRING (Vsystem_name)->data; *p; p++) | |
2439 | if (*p == ' ' || *p == '\t') | |
2440 | *p = '-'; | |
2441 | } | |
67004ffb | 2442 | } |
86a5659e | 2443 | \f |
7964ba9e | 2444 | #ifndef MSDOS |
86a5659e | 2445 | #ifndef VMS |
86d1f23a | 2446 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2447 | |
86d1f23a KH |
2448 | #include "sysselect.h" |
2449 | #undef select | |
2450 | ||
2451 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2452 | /* Cause explanatory error message at compile time, |
2453 | since the select emulation is not good enough for X. */ | |
2454 | int *x = &x_windows_lose_if_no_select_system_call; | |
2455 | #endif | |
2456 | ||
2457 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2458 | * Only checks read descriptors. | |
2459 | */ | |
2460 | /* How long to wait between checking fds in select */ | |
2461 | #define SELECT_PAUSE 1 | |
2462 | int select_alarmed; | |
2463 | ||
2464 | /* For longjmp'ing back to read_input_waiting. */ | |
2465 | ||
2466 | jmp_buf read_alarm_throw; | |
2467 | ||
2468 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2469 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2470 | ||
2471 | int read_alarm_should_throw; | |
2472 | ||
2473 | SIGTYPE | |
2474 | select_alarm () | |
2475 | { | |
2476 | select_alarmed = 1; | |
2477 | #ifdef BSD4_1 | |
2478 | sigrelse (SIGALRM); | |
2479 | #else /* not BSD4_1 */ | |
2480 | signal (SIGALRM, SIG_IGN); | |
2481 | #endif /* not BSD4_1 */ | |
2482 | if (read_alarm_should_throw) | |
2483 | longjmp (read_alarm_throw, 1); | |
2484 | } | |
2485 | ||
fe03522b | 2486 | #ifndef WINDOWSNT |
86a5659e JB |
2487 | /* Only rfds are checked. */ |
2488 | int | |
86d1f23a | 2489 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2490 | int nfds; |
86d1f23a KH |
2491 | SELECT_TYPE *rfds, *wfds, *efds; |
2492 | EMACS_TIME *timeout; | |
86a5659e | 2493 | { |
ffdcc91d | 2494 | int ravail = 0; |
86d1f23a KH |
2495 | SELECT_TYPE orfds; |
2496 | int timeoutval; | |
2497 | int *local_timeout; | |
86a5659e JB |
2498 | extern int proc_buffered_char[]; |
2499 | #ifndef subprocesses | |
2500 | int process_tick = 0, update_tick = 0; | |
2501 | #else | |
2502 | extern int process_tick, update_tick; | |
2503 | #endif | |
86a5659e JB |
2504 | unsigned char buf; |
2505 | ||
86d1f23a KH |
2506 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2507 | /* If we're using X, then the native select will work; we only need the | |
2508 | emulation for non-X usage. */ | |
2509 | if (!NILP (Vwindow_system)) | |
2510 | return select (nfds, rfds, wfds, efds, timeout); | |
2511 | #endif | |
2512 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2513 | local_timeout = &timeoutval; | |
2514 | FD_ZERO (&orfds); | |
86a5659e JB |
2515 | if (rfds) |
2516 | { | |
2517 | orfds = *rfds; | |
86d1f23a | 2518 | FD_ZERO (rfds); |
86a5659e JB |
2519 | } |
2520 | if (wfds) | |
86d1f23a | 2521 | FD_ZERO (wfds); |
86a5659e | 2522 | if (efds) |
86d1f23a | 2523 | FD_ZERO (efds); |
86a5659e JB |
2524 | |
2525 | /* If we are looking only for the terminal, with no timeout, | |
2526 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2527 | if (*local_timeout == 100000 && process_tick == update_tick |
2528 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2529 | { |
86d1f23a KH |
2530 | int fd; |
2531 | for (fd = 1; fd < nfds; ++fd) | |
2532 | if (FD_ISSET (fd, &orfds)) | |
2533 | goto hardway; | |
86a5659e JB |
2534 | if (! detect_input_pending ()) |
2535 | read_input_waiting (); | |
86d1f23a | 2536 | FD_SET (0, rfds); |
86a5659e JB |
2537 | return 1; |
2538 | } | |
2539 | ||
86d1f23a | 2540 | hardway: |
86a5659e JB |
2541 | /* Once a second, till the timer expires, check all the flagged read |
2542 | * descriptors to see if any input is available. If there is some then | |
2543 | * set the corresponding bit in the return copy of rfds. | |
2544 | */ | |
2545 | while (1) | |
2546 | { | |
86d1f23a | 2547 | register int to_check, fd; |
86a5659e JB |
2548 | |
2549 | if (rfds) | |
2550 | { | |
86d1f23a | 2551 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2552 | { |
86d1f23a | 2553 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2554 | { |
2555 | int avail = 0, status = 0; | |
2556 | ||
86d1f23a | 2557 | if (fd == 0) |
86a5659e JB |
2558 | avail = detect_input_pending (); /* Special keyboard handler */ |
2559 | else | |
2560 | { | |
2561 | #ifdef FIONREAD | |
2562 | status = ioctl (fd, FIONREAD, &avail); | |
2563 | #else /* no FIONREAD */ | |
2564 | /* Hoping it will return -1 if nothing available | |
2565 | or 0 if all 0 chars requested are read. */ | |
2566 | if (proc_buffered_char[fd] >= 0) | |
2567 | avail = 1; | |
2568 | else | |
2569 | { | |
2570 | avail = read (fd, &buf, 1); | |
2571 | if (avail > 0) | |
2572 | proc_buffered_char[fd] = buf; | |
2573 | } | |
2574 | #endif /* no FIONREAD */ | |
2575 | } | |
2576 | if (status >= 0 && avail > 0) | |
2577 | { | |
86d1f23a | 2578 | FD_SET (fd, rfds); |
86a5659e JB |
2579 | ravail++; |
2580 | } | |
2581 | } | |
2582 | } | |
2583 | } | |
2584 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2585 | break; | |
ffdcc91d GM |
2586 | |
2587 | turn_on_atimers (0); | |
2588 | signal (SIGALRM, select_alarm); | |
86a5659e JB |
2589 | select_alarmed = 0; |
2590 | alarm (SELECT_PAUSE); | |
ffdcc91d | 2591 | |
86a5659e JB |
2592 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
2593 | while (select_alarmed == 0 && *local_timeout != 0 | |
2594 | && process_tick == update_tick) | |
2595 | { | |
2596 | /* If we are interested in terminal input, | |
2597 | wait by reading the terminal. | |
2598 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2599 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2600 | { |
2601 | read_input_waiting (); | |
2602 | if (detect_input_pending ()) | |
2603 | select_alarmed = 1; | |
2604 | } | |
2605 | else | |
2606 | pause (); | |
2607 | } | |
2608 | (*local_timeout) -= SELECT_PAUSE; | |
ffdcc91d GM |
2609 | |
2610 | /* Reset the old alarm if there was one. */ | |
2611 | turn_on_atimers (1); | |
2612 | ||
86a5659e JB |
2613 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
2614 | break; | |
2615 | } | |
2616 | return ravail; | |
2617 | } | |
fe03522b | 2618 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2619 | |
2620 | /* Read keyboard input into the standard buffer, | |
2621 | waiting for at least one character. */ | |
2622 | ||
23cafe43 GV |
2623 | /* Make all keyboard buffers much bigger when using a window system. */ |
2624 | #ifdef HAVE_WINDOW_SYSTEM | |
86a5659e JB |
2625 | #define BUFFER_SIZE_FACTOR 16 |
2626 | #else | |
2627 | #define BUFFER_SIZE_FACTOR 1 | |
2628 | #endif | |
2629 | ||
dfcf069d | 2630 | void |
86a5659e JB |
2631 | read_input_waiting () |
2632 | { | |
86a5659e | 2633 | struct input_event e; |
34567704 JB |
2634 | int nread, i; |
2635 | extern int quit_char; | |
86a5659e JB |
2636 | |
2637 | if (read_socket_hook) | |
2638 | { | |
f4a7e5bd RS |
2639 | struct input_event buf[256]; |
2640 | ||
86a5659e JB |
2641 | read_alarm_should_throw = 0; |
2642 | if (! setjmp (read_alarm_throw)) | |
599c6c17 | 2643 | nread = (*read_socket_hook) (0, buf, 256, 1); |
86a5659e JB |
2644 | else |
2645 | nread = -1; | |
f4a7e5bd RS |
2646 | |
2647 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2648 | for (i = 0; i < nread; i++) | |
2649 | { | |
2650 | kbd_buffer_store_event (&buf[i]); | |
2651 | /* Don't look at input that follows a C-g too closely. | |
2652 | This reduces lossage due to autorepeat on C-g. */ | |
2653 | if (buf[i].kind == ascii_keystroke | |
30bef8ec | 2654 | && buf[i].code == quit_char) |
f4a7e5bd RS |
2655 | break; |
2656 | } | |
86a5659e JB |
2657 | } |
2658 | else | |
86a5659e | 2659 | { |
f4a7e5bd RS |
2660 | char buf[3]; |
2661 | nread = read (fileno (stdin), buf, 1); | |
2662 | ||
2663 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2664 | e.kind = ascii_keystroke; | |
2d064114 | 2665 | e.frame_or_window = selected_frame; |
f4a7e5bd RS |
2666 | e.modifiers = 0; |
2667 | for (i = 0; i < nread; i++) | |
a00d5589 | 2668 | { |
f4a7e5bd RS |
2669 | /* Convert chars > 0177 to meta events if desired. |
2670 | We do this under the same conditions that read_avail_input does. */ | |
2671 | if (read_socket_hook == 0) | |
2672 | { | |
2673 | /* If the user says she has a meta key, then believe her. */ | |
2674 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2675 | e.modifiers = meta_modifier; | |
2676 | if (meta_key != 2) | |
2677 | buf[i] &= ~0x80; | |
2678 | } | |
b95520f5 | 2679 | |
c81d47b4 | 2680 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2681 | kbd_buffer_store_event (&e); |
2682 | /* Don't look at input that follows a C-g too closely. | |
2683 | This reduces lossage due to autorepeat on C-g. */ | |
2684 | if (buf[i] == quit_char) | |
2685 | break; | |
2686 | } | |
86a5659e JB |
2687 | } |
2688 | } | |
2689 | ||
2690 | #endif /* not HAVE_SELECT */ | |
2691 | #endif /* not VMS */ | |
7964ba9e | 2692 | #endif /* not MSDOS */ |
86a5659e JB |
2693 | \f |
2694 | #ifdef BSD4_1 | |
08633194 | 2695 | void |
23dab951 RS |
2696 | init_sigio (fd) |
2697 | int fd; | |
86a5659e JB |
2698 | { |
2699 | if (noninteractive) | |
2700 | return; | |
2701 | lmode = LINTRUP | lmode; | |
23dab951 | 2702 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2703 | } |
2704 | ||
dfcf069d | 2705 | void |
86a5659e JB |
2706 | reset_sigio () |
2707 | { | |
2708 | if (noninteractive) | |
2709 | return; | |
2710 | lmode = ~LINTRUP & lmode; | |
2711 | ioctl (0, TIOCLSET, &lmode); | |
2712 | } | |
2713 | ||
08633194 | 2714 | void |
86a5659e JB |
2715 | request_sigio () |
2716 | { | |
2717 | sigrelse (SIGTINT); | |
2718 | ||
2719 | interrupts_deferred = 0; | |
2720 | } | |
2721 | ||
08633194 | 2722 | void |
86a5659e JB |
2723 | unrequest_sigio () |
2724 | { | |
2725 | sighold (SIGTINT); | |
2726 | ||
2727 | interrupts_deferred = 1; | |
2728 | } | |
2729 | ||
2730 | /* still inside #ifdef BSD4_1 */ | |
2731 | #ifdef subprocesses | |
2732 | ||
2733 | int sigheld; /* Mask of held signals */ | |
2734 | ||
dfcf069d | 2735 | void |
86a5659e JB |
2736 | sigholdx (signum) |
2737 | int signum; | |
2738 | { | |
2739 | sigheld |= sigbit (signum); | |
2740 | sighold (signum); | |
2741 | } | |
2742 | ||
dfcf069d | 2743 | void |
86a5659e JB |
2744 | sigisheld (signum) |
2745 | int signum; | |
2746 | { | |
2747 | sigheld |= sigbit (signum); | |
2748 | } | |
2749 | ||
dfcf069d | 2750 | void |
86a5659e JB |
2751 | sigunhold (signum) |
2752 | int signum; | |
2753 | { | |
2754 | sigheld &= ~sigbit (signum); | |
2755 | sigrelse (signum); | |
2756 | } | |
2757 | ||
dfcf069d | 2758 | void |
86a5659e JB |
2759 | sigfree () /* Free all held signals */ |
2760 | { | |
2761 | int i; | |
2762 | for (i = 0; i < NSIG; i++) | |
2763 | if (sigheld & sigbit (i)) | |
2764 | sigrelse (i); | |
2765 | sigheld = 0; | |
2766 | } | |
2767 | ||
dfcf069d | 2768 | int |
86a5659e JB |
2769 | sigbit (i) |
2770 | { | |
2771 | return 1 << (i - 1); | |
2772 | } | |
2773 | #endif /* subprocesses */ | |
2774 | #endif /* BSD4_1 */ | |
2775 | \f | |
2776 | /* POSIX signals support - DJB */ | |
2777 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2778 | ||
2779 | #ifdef POSIX_SIGNALS | |
2780 | ||
c639b0e3 | 2781 | sigset_t empty_mask, full_mask; |
86a5659e | 2782 | |
86a5659e JB |
2783 | signal_handler_t |
2784 | sys_signal (int signal_number, signal_handler_t action) | |
2785 | { | |
c639b0e3 | 2786 | struct sigaction new_action, old_action; |
86a5659e | 2787 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2788 | new_action.sa_handler = action; |
25ab68af RS |
2789 | #ifdef SA_RESTART |
2790 | /* Emacs mostly works better with restartable system services. If this | |
2791 | * flag exists, we probably want to turn it on here. | |
2792 | */ | |
2793 | new_action.sa_flags = SA_RESTART; | |
2794 | #else | |
4a785b6e | 2795 | new_action.sa_flags = 0; |
25ab68af | 2796 | #endif |
d32b2f3c | 2797 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2798 | return (old_action.sa_handler); |
86a5659e JB |
2799 | } |
2800 | ||
e065a56e JB |
2801 | #ifndef __GNUC__ |
2802 | /* If we're compiling with GCC, we don't need this function, since it | |
2803 | can be written as a macro. */ | |
2804 | sigset_t | |
2805 | sys_sigmask (int sig) | |
2806 | { | |
2807 | sigset_t mask; | |
2808 | sigemptyset (&mask); | |
2809 | sigaddset (&mask, sig); | |
2810 | return mask; | |
2811 | } | |
2812 | #endif | |
2813 | ||
86a5659e JB |
2814 | /* I'd like to have these guys return pointers to the mask storage in here, |
2815 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2816 | safe and pass the structure. It normally won't be more than 2 bytes | |
2817 | anyhow. - DJB */ | |
2818 | ||
2819 | sigset_t | |
2820 | sys_sigblock (sigset_t new_mask) | |
2821 | { | |
2822 | sigset_t old_mask; | |
2823 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2824 | return (old_mask); | |
2825 | } | |
2826 | ||
2827 | sigset_t | |
2828 | sys_sigunblock (sigset_t new_mask) | |
2829 | { | |
2830 | sigset_t old_mask; | |
2831 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2832 | return (old_mask); | |
2833 | } | |
2834 | ||
2835 | sigset_t | |
2836 | sys_sigsetmask (sigset_t new_mask) | |
2837 | { | |
2838 | sigset_t old_mask; | |
2839 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2840 | return (old_mask); | |
2841 | } | |
2842 | ||
2843 | #endif /* POSIX_SIGNALS */ | |
2844 | \f | |
ca9c0567 PE |
2845 | #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED |
2846 | static char *my_sys_siglist[NSIG]; | |
2847 | # ifdef sys_siglist | |
2848 | # undef sys_siglist | |
2849 | # endif | |
2850 | # define sys_siglist my_sys_siglist | |
2851 | #endif | |
2852 | ||
2853 | void | |
2854 | init_signals () | |
2855 | { | |
2856 | #ifdef POSIX_SIGNALS | |
2857 | sigemptyset (&empty_mask); | |
2858 | sigfillset (&full_mask); | |
2859 | #endif | |
2860 | ||
2861 | #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED | |
2862 | if (! initialized) | |
2863 | { | |
2864 | # ifdef SIGABRT | |
2865 | sys_siglist[SIGABRT] = "Aborted"; | |
2866 | # endif | |
2867 | # ifdef SIGAIO | |
2868 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
2869 | # endif | |
2870 | # ifdef SIGALRM | |
2871 | sys_siglist[SIGALRM] = "Alarm clock"; | |
2872 | # endif | |
2873 | # ifdef SIGBUS | |
2874 | sys_siglist[SIGBUS] = "Bus error"; | |
2875 | # endif | |
2876 | # ifdef SIGCLD | |
2877 | sys_siglist[SIGCLD] = "Child status changed"; | |
2878 | # endif | |
2879 | # ifdef SIGCHLD | |
2880 | sys_siglist[SIGCHLD] = "Child status changed"; | |
2881 | # endif | |
2882 | # ifdef SIGCONT | |
2883 | sys_siglist[SIGCONT] = "Continued"; | |
2884 | # endif | |
2885 | # ifdef SIGDANGER | |
2886 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
2887 | # endif | |
2888 | # ifdef SIGDGNOTIFY | |
2889 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
2890 | # endif | |
2891 | # ifdef SIGEMT | |
2892 | sys_siglist[SIGEMT] = "Emulation trap"; | |
2893 | # endif | |
2894 | # ifdef SIGFPE | |
2895 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
2896 | # endif | |
2897 | # ifdef SIGFREEZE | |
2898 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
2899 | # endif | |
2900 | # ifdef SIGGRANT | |
2901 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
2902 | # endif | |
2903 | # ifdef SIGHUP | |
2904 | sys_siglist[SIGHUP] = "Hangup"; | |
2905 | # endif | |
2906 | # ifdef SIGILL | |
2907 | sys_siglist[SIGILL] = "Illegal instruction"; | |
2908 | # endif | |
2909 | # ifdef SIGINT | |
2910 | sys_siglist[SIGINT] = "Interrupt"; | |
2911 | # endif | |
2912 | # ifdef SIGIO | |
2913 | sys_siglist[SIGIO] = "I/O possible"; | |
2914 | # endif | |
2915 | # ifdef SIGIOINT | |
2916 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
2917 | # endif | |
2918 | # ifdef SIGIOT | |
2919 | sys_siglist[SIGIOT] = "IOT trap"; | |
2920 | # endif | |
2921 | # ifdef SIGKILL | |
2922 | sys_siglist[SIGKILL] = "Killed"; | |
2923 | # endif | |
2924 | # ifdef SIGLOST | |
2925 | sys_siglist[SIGLOST] = "Resource lost"; | |
2926 | # endif | |
2927 | # ifdef SIGLWP | |
2928 | sys_siglist[SIGLWP] = "SIGLWP"; | |
2929 | # endif | |
2930 | # ifdef SIGMSG | |
2931 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
2932 | # endif | |
2933 | # ifdef SIGPHONE | |
2934 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
2935 | # endif | |
2936 | # ifdef SIGPIPE | |
2937 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
2938 | # endif | |
2939 | # ifdef SIGPOLL | |
2940 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
2941 | # endif | |
2942 | # ifdef SIGPROF | |
2943 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
2944 | # endif | |
2945 | # ifdef SIGPTY | |
2946 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
2947 | # endif | |
2948 | # ifdef SIGPWR | |
2949 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
2950 | # endif | |
2951 | # ifdef SIGQUIT | |
2952 | sys_siglist[SIGQUIT] = "Quit"; | |
2953 | # endif | |
2954 | # ifdef SIGRETRACT | |
2955 | sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; | |
2956 | # endif | |
2957 | # ifdef SIGSAK | |
2958 | sys_siglist[SIGSAK] = "Secure attention"; | |
2959 | # endif | |
2960 | # ifdef SIGSEGV | |
2961 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
2962 | # endif | |
2963 | # ifdef SIGSOUND | |
2964 | sys_siglist[SIGSOUND] = "Sound completed"; | |
2965 | # endif | |
2966 | # ifdef SIGSTOP | |
2967 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
2968 | # endif | |
2969 | # ifdef SIGSTP | |
2970 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
2971 | # endif | |
2972 | # ifdef SIGSYS | |
2973 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
2974 | # endif | |
2975 | # ifdef SIGTERM | |
2976 | sys_siglist[SIGTERM] = "Terminated"; | |
2977 | # endif | |
2978 | # ifdef SIGTHAW | |
2979 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
2980 | # endif | |
2981 | # ifdef SIGTRAP | |
2982 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
2983 | # endif | |
2984 | # ifdef SIGTSTP | |
2985 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
2986 | # endif | |
2987 | # ifdef SIGTTIN | |
2988 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
2989 | # endif | |
2990 | # ifdef SIGTTOU | |
2991 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
2992 | # endif | |
2993 | # ifdef SIGURG | |
2994 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
2995 | # endif | |
2996 | # ifdef SIGUSR1 | |
2997 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
2998 | # endif | |
2999 | # ifdef SIGUSR2 | |
3000 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
3001 | # endif | |
3002 | # ifdef SIGVTALRM | |
3003 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
3004 | # endif | |
3005 | # ifdef SIGWAITING | |
3006 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
3007 | # endif | |
3008 | # ifdef SIGWINCH | |
3009 | sys_siglist[SIGWINCH] = "Window size changed"; | |
3010 | # endif | |
3011 | # ifdef SIGWIND | |
3012 | sys_siglist[SIGWIND] = "SIGWIND"; | |
3013 | # endif | |
3014 | # ifdef SIGXCPU | |
3015 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
3016 | # endif | |
3017 | # ifdef SIGXFSZ | |
3018 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
3019 | # endif | |
3020 | } | |
3021 | #endif /* !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED */ | |
3022 | } | |
3023 | \f | |
9927a7b1 | 3024 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
3025 | #ifdef random |
3026 | #define HAVE_RANDOM | |
3027 | #endif | |
3028 | #endif | |
3029 | ||
3030 | /* Figure out how many bits the system's random number generator uses. | |
3031 | `random' and `lrand48' are assumed to return 31 usable bits. | |
3032 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
3033 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
3034 | ||
3035 | #ifndef RAND_BITS | |
3036 | # ifdef HAVE_RANDOM | |
3037 | # define RAND_BITS 31 | |
3038 | # else /* !HAVE_RANDOM */ | |
3039 | # ifdef HAVE_LRAND48 | |
3040 | # define RAND_BITS 31 | |
3041 | # define random lrand48 | |
3042 | # else /* !HAVE_LRAND48 */ | |
3043 | # define RAND_BITS 15 | |
3044 | # if RAND_MAX == 32767 | |
3045 | # define random rand | |
3046 | # else /* RAND_MAX != 32767 */ | |
3047 | # if RAND_MAX == 2147483647 | |
3048 | # define random() (rand () >> 16) | |
3049 | # else /* RAND_MAX != 2147483647 */ | |
3050 | # ifdef USG | |
3051 | # define random rand | |
3052 | # else | |
3053 | # define random() (rand () >> 16) | |
2a633456 | 3054 | # endif /* !USG */ |
4bb8c8b7 KH |
3055 | # endif /* RAND_MAX != 2147483647 */ |
3056 | # endif /* RAND_MAX != 32767 */ | |
3057 | # endif /* !HAVE_LRAND48 */ | |
3058 | # endif /* !HAVE_RANDOM */ | |
3059 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 3060 | |
4bb8c8b7 KH |
3061 | void |
3062 | seed_random (arg) | |
3063 | long arg; | |
86a5659e | 3064 | { |
4bb8c8b7 KH |
3065 | #ifdef HAVE_RANDOM |
3066 | srandom ((unsigned int)arg); | |
f8b53a82 | 3067 | #else |
4bb8c8b7 | 3068 | # ifdef HAVE_LRAND48 |
76425a49 | 3069 | srand48 (arg); |
4bb8c8b7 KH |
3070 | # else |
3071 | srand ((unsigned int)arg); | |
3072 | # endif | |
2e46c7c6 | 3073 | #endif |
86a5659e JB |
3074 | } |
3075 | ||
4bb8c8b7 KH |
3076 | /* |
3077 | * Build a full Emacs-sized word out of whatever we've got. | |
3078 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
3079 | */ | |
3080 | long | |
3081 | get_random () | |
3082 | { | |
3083 | long val = random (); | |
3084 | #if VALBITS > RAND_BITS | |
3085 | val = (val << RAND_BITS) ^ random (); | |
3086 | #if VALBITS > 2*RAND_BITS | |
3087 | val = (val << RAND_BITS) ^ random (); | |
3088 | #if VALBITS > 3*RAND_BITS | |
3089 | val = (val << RAND_BITS) ^ random (); | |
3090 | #if VALBITS > 4*RAND_BITS | |
3091 | val = (val << RAND_BITS) ^ random (); | |
3092 | #endif /* need at least 5 */ | |
3093 | #endif /* need at least 4 */ | |
3094 | #endif /* need at least 3 */ | |
3095 | #endif /* need at least 2 */ | |
3096 | return val & ((1L << VALBITS) - 1); | |
3097 | } | |
86a5659e JB |
3098 | \f |
3099 | #ifdef WRONG_NAME_INSQUE | |
3100 | ||
3101 | insque (q,p) | |
3102 | caddr_t q,p; | |
3103 | { | |
3104 | _insque (q,p); | |
3105 | } | |
3106 | ||
3107 | #endif | |
3108 | \f | |
3109 | #ifdef VMS | |
3110 | ||
3111 | #ifdef getenv | |
3112 | /* If any place else asks for the TERM variable, | |
3113 | allow it to be overridden with the EMACS_TERM variable | |
3114 | before attempting to translate the logical name TERM. As a last | |
3115 | resort, ask for VAX C's special idea of the TERM variable. */ | |
3116 | #undef getenv | |
3117 | char * | |
3118 | sys_getenv (name) | |
3119 | char *name; | |
3120 | { | |
3121 | register char *val; | |
3122 | static char buf[256]; | |
3123 | static struct dsc$descriptor_s equiv | |
3124 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
3125 | static struct dsc$descriptor_s d_name | |
3126 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
3127 | short eqlen; | |
3128 | ||
3129 | if (!strcmp (name, "TERM")) | |
3130 | { | |
3131 | val = (char *) getenv ("EMACS_TERM"); | |
3132 | if (val) | |
3133 | return val; | |
3134 | } | |
3135 | ||
3136 | d_name.dsc$w_length = strlen (name); | |
3137 | d_name.dsc$a_pointer = name; | |
986ffb24 | 3138 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
3139 | { |
3140 | char *str = (char *) xmalloc (eqlen + 1); | |
3141 | bcopy (buf, str, eqlen); | |
3142 | str[eqlen] = '\0'; | |
3143 | /* This is a storage leak, but a pain to fix. With luck, | |
3144 | no one will ever notice. */ | |
3145 | return str; | |
3146 | } | |
3147 | return (char *) getenv (name); | |
3148 | } | |
3149 | #endif /* getenv */ | |
3150 | ||
3151 | #ifdef abort | |
3152 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
3153 | to force a call on the debugger from within the image. */ | |
3154 | #undef abort | |
3155 | sys_abort () | |
3156 | { | |
3157 | reset_sys_modes (); | |
3158 | LIB$SIGNAL (SS$_DEBUG); | |
3159 | } | |
3160 | #endif /* abort */ | |
3161 | #endif /* VMS */ | |
3162 | \f | |
3163 | #ifdef VMS | |
3164 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 3165 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 3166 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
3167 | cannot be shared. The VMS linker incorrectly forces you to use a private |
3168 | version which is uninitialized... If not for this "feature", we | |
3169 | could use the C library definition of sys_nerr and sys_errlist. */ | |
3170 | int sys_nerr = 35; | |
3171 | char *sys_errlist[] = | |
3172 | { | |
3173 | "error 0", | |
3174 | "not owner", | |
3175 | "no such file or directory", | |
3176 | "no such process", | |
3177 | "interrupted system call", | |
3178 | "i/o error", | |
3179 | "no such device or address", | |
3180 | "argument list too long", | |
3181 | "exec format error", | |
3182 | "bad file number", | |
3183 | "no child process", | |
3184 | "no more processes", | |
3185 | "not enough memory", | |
3186 | "permission denied", | |
3187 | "bad address", | |
3188 | "block device required", | |
3189 | "mount devices busy", | |
3190 | "file exists", | |
3191 | "cross-device link", | |
3192 | "no such device", | |
3193 | "not a directory", | |
3194 | "is a directory", | |
3195 | "invalid argument", | |
3196 | "file table overflow", | |
3197 | "too many open files", | |
3198 | "not a typewriter", | |
3199 | "text file busy", | |
3200 | "file too big", | |
3201 | "no space left on device", | |
3202 | "illegal seek", | |
3203 | "read-only file system", | |
3204 | "too many links", | |
3205 | "broken pipe", | |
3206 | "math argument", | |
3207 | "result too large", | |
3208 | "I/O stream empty", | |
3209 | "vax/vms specific error code nontranslatable error" | |
3210 | }; | |
ea5a0917 | 3211 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
3212 | #endif /* LINK_CRTL_SHARE */ |
3213 | #endif /* VMS */ | |
7088d1ca RM |
3214 | |
3215 | #ifndef HAVE_STRERROR | |
fe03522b | 3216 | #ifndef WINDOWSNT |
7088d1ca RM |
3217 | char * |
3218 | strerror (errnum) | |
3219 | int errnum; | |
3220 | { | |
3221 | extern char *sys_errlist[]; | |
3222 | extern int sys_nerr; | |
3223 | ||
3224 | if (errnum >= 0 && errnum < sys_nerr) | |
3225 | return sys_errlist[errnum]; | |
3226 | return (char *) "Unknown error"; | |
3227 | } | |
fe03522b | 3228 | #endif /* not WINDOWSNT */ |
7088d1ca | 3229 | #endif /* ! HAVE_STRERROR */ |
86a5659e | 3230 | \f |
86a5659e | 3231 | int |
68c45bf0 | 3232 | emacs_open (path, oflag, mode) |
86a5659e JB |
3233 | char *path; |
3234 | int oflag, mode; | |
3235 | { | |
3236 | register int rtnval; | |
68c45bf0 PE |
3237 | |
3238 | #ifdef BSD4_1 | |
3239 | if (oflag & O_CREAT) | |
3240 | return creat (path, mode); | |
3241 | #endif | |
86a5659e JB |
3242 | |
3243 | while ((rtnval = open (path, oflag, mode)) == -1 | |
3244 | && (errno == EINTR)); | |
3245 | return (rtnval); | |
3246 | } | |
3247 | ||
dfcf069d | 3248 | int |
68c45bf0 | 3249 | emacs_close (fd) |
86a5659e JB |
3250 | int fd; |
3251 | { | |
fe111daf | 3252 | int did_retry = 0; |
86a5659e JB |
3253 | register int rtnval; |
3254 | ||
3255 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3256 | && (errno == EINTR)) |
3257 | did_retry = 1; | |
3258 | ||
3259 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3260 | file descriptor. If it did the second close will fail with | |
3261 | errno = EBADF. That means we have succeeded. */ | |
3262 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3263 | return 0; | |
3264 | ||
86a5659e JB |
3265 | return rtnval; |
3266 | } | |
3267 | ||
86a5659e | 3268 | int |
68c45bf0 | 3269 | emacs_read (fildes, buf, nbyte) |
86a5659e JB |
3270 | int fildes; |
3271 | char *buf; | |
3272 | unsigned int nbyte; | |
3273 | { | |
3274 | register int rtnval; | |
3275 | ||
3276 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
3277 | && (errno == EINTR)); | |
3278 | return (rtnval); | |
3279 | } | |
3280 | ||
3281 | int | |
68c45bf0 | 3282 | emacs_write (fildes, buf, nbyte) |
86a5659e JB |
3283 | int fildes; |
3284 | char *buf; | |
3285 | unsigned int nbyte; | |
3286 | { | |
b95520f5 | 3287 | register int rtnval, bytes_written; |
86a5659e | 3288 | |
b95520f5 BF |
3289 | bytes_written = 0; |
3290 | ||
3291 | while (nbyte > 0) | |
3292 | { | |
3293 | rtnval = write (fildes, buf, nbyte); | |
3294 | ||
3295 | if (rtnval == -1) | |
3296 | { | |
3297 | if (errno == EINTR) | |
3298 | continue; | |
3299 | else | |
aa670904 | 3300 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3301 | } |
3302 | ||
3303 | buf += rtnval; | |
3304 | nbyte -= rtnval; | |
3305 | bytes_written += rtnval; | |
3306 | } | |
3307 | return (bytes_written); | |
86a5659e | 3308 | } |
86a5659e JB |
3309 | \f |
3310 | #ifdef USG | |
3311 | /* | |
3312 | * All of the following are for USG. | |
3313 | * | |
3314 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3315 | * that the user program has elected to catch. Thus the system call | |
3316 | * must be retried in these cases. To handle this without massive | |
3317 | * changes in the source code, we remap the standard system call names | |
3318 | * to names for our own functions in sysdep.c that do the system call | |
3319 | * with retries. Actually, for portability reasons, it is good | |
3320 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3321 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3322 | * adds an extra level of function call overhead but it is almost |
3323 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3324 | */ | |
3325 | ||
86a5659e JB |
3326 | /* |
3327 | * Warning, this function may not duplicate 4.2 action properly | |
3328 | * under error conditions. | |
3329 | */ | |
3330 | ||
3331 | #ifndef MAXPATHLEN | |
3332 | /* In 4.1, param.h fails to define this. */ | |
3333 | #define MAXPATHLEN 1024 | |
3334 | #endif | |
3335 | ||
3336 | #ifndef HAVE_GETWD | |
3337 | ||
3338 | char * | |
3339 | getwd (pathname) | |
3340 | char *pathname; | |
3341 | { | |
3342 | char *npath, *spath; | |
3343 | extern char *getcwd (); | |
3344 | ||
9ac0d9e0 | 3345 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3346 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
3347 | if (spath == 0) |
3348 | return spath; | |
86a5659e JB |
3349 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3350 | up to first slash. Should be harmless on other systems. */ | |
3351 | while (*npath && *npath != '/') | |
3352 | npath++; | |
3353 | strcpy (pathname, npath); | |
3354 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3355 | UNBLOCK_INPUT; |
86a5659e JB |
3356 | return pathname; |
3357 | } | |
3358 | ||
3359 | #endif /* HAVE_GETWD */ | |
3360 | ||
3361 | /* | |
3362 | * Emulate rename using unlink/link. Note that this is | |
3363 | * only partially correct. Also, doesn't enforce restriction | |
3364 | * that files be of same type (regular->regular, dir->dir, etc). | |
3365 | */ | |
3366 | ||
4746118a JB |
3367 | #ifndef HAVE_RENAME |
3368 | ||
86a5659e | 3369 | rename (from, to) |
19c7afdf JB |
3370 | const char *from; |
3371 | const char *to; | |
86a5659e JB |
3372 | { |
3373 | if (access (from, 0) == 0) | |
3374 | { | |
3375 | unlink (to); | |
3376 | if (link (from, to) == 0) | |
3377 | if (unlink (from) == 0) | |
3378 | return (0); | |
3379 | } | |
3380 | return (-1); | |
3381 | } | |
3382 | ||
4746118a JB |
3383 | #endif |
3384 | ||
86a5659e JB |
3385 | |
3386 | #ifdef HPUX | |
3387 | #ifndef HAVE_PERROR | |
3388 | ||
3389 | /* HPUX curses library references perror, but as far as we know | |
3390 | it won't be called. Anyway this definition will do for now. */ | |
3391 | ||
3392 | perror () | |
3393 | { | |
3394 | } | |
3395 | ||
3396 | #endif /* not HAVE_PERROR */ | |
3397 | #endif /* HPUX */ | |
3398 | ||
3399 | #ifndef HAVE_DUP2 | |
3400 | ||
3401 | /* | |
3402 | * Emulate BSD dup2. First close newd if it already exists. | |
3403 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3404 | * until we are, then close the unsuccessful ones. | |
3405 | */ | |
3406 | ||
3407 | dup2 (oldd, newd) | |
3408 | int oldd; | |
3409 | int newd; | |
3410 | { | |
3411 | register int fd, ret; | |
3412 | ||
68c45bf0 | 3413 | emacs_close (newd); |
86a5659e JB |
3414 | |
3415 | #ifdef F_DUPFD | |
68c45bf0 | 3416 | return fcntl (oldd, F_DUPFD, newd); |
86a5659e JB |
3417 | #else |
3418 | fd = dup (old); | |
3419 | if (fd == -1) | |
3420 | return -1; | |
3421 | if (fd == new) | |
3422 | return new; | |
3423 | ret = dup2 (old,new); | |
68c45bf0 | 3424 | emacs_close (fd); |
86a5659e JB |
3425 | return ret; |
3426 | #endif | |
3427 | } | |
3428 | ||
3429 | #endif /* not HAVE_DUP2 */ | |
3430 | ||
3431 | /* | |
3432 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3433 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3434 | * Only needed when subprocesses are defined. | |
3435 | */ | |
3436 | ||
3437 | #ifdef subprocesses | |
3438 | #ifndef VMS | |
3439 | #ifndef HAVE_GETTIMEOFDAY | |
3440 | #ifdef HAVE_TIMEVAL | |
3441 | ||
3442 | /* ARGSUSED */ | |
dfcf069d | 3443 | int |
86a5659e JB |
3444 | gettimeofday (tp, tzp) |
3445 | struct timeval *tp; | |
3446 | struct timezone *tzp; | |
3447 | { | |
3448 | extern long time (); | |
3449 | ||
3450 | tp->tv_sec = time ((long *)0); | |
3451 | tp->tv_usec = 0; | |
4ca7594f RS |
3452 | if (tzp != 0) |
3453 | tzp->tz_minuteswest = -1; | |
dfcf069d | 3454 | return 0; |
86a5659e JB |
3455 | } |
3456 | ||
3457 | #endif | |
3458 | #endif | |
3459 | #endif | |
3460 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3461 | ||
3462 | /* | |
3463 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3464 | */ | |
3465 | ||
dfcf069d | 3466 | void |
86a5659e JB |
3467 | croak (badfunc) |
3468 | char *badfunc; | |
3469 | { | |
3470 | printf ("%s not yet implemented\r\n", badfunc); | |
3471 | reset_sys_modes (); | |
3472 | exit (1); | |
3473 | } | |
3474 | ||
3475 | #endif /* USG */ | |
3476 | \f | |
86a5659e JB |
3477 | /* Directory routines for systems that don't have them. */ |
3478 | ||
3479 | #ifdef SYSV_SYSTEM_DIR | |
3480 | ||
3481 | #include <dirent.h> | |
3482 | ||
c4ea52a6 | 3483 | #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR) |
cfdc57af | 3484 | |
86a5659e JB |
3485 | int |
3486 | closedir (dirp) | |
3487 | register DIR *dirp; /* stream from opendir */ | |
3488 | { | |
cfdc57af RS |
3489 | int rtnval; |
3490 | ||
68c45bf0 | 3491 | rtnval = emacs_close (dirp->dd_fd); |
1b929d25 | 3492 | |
65aa44ac JB |
3493 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3494 | in one block. Why in the world are we freeing this ourselves | |
3495 | anyway? */ | |
3496 | #if ! (defined (sun) && defined (USG5_4)) | |
3497 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3498 | #endif | |
9ac0d9e0 | 3499 | xfree ((char *) dirp); |
cfdc57af RS |
3500 | |
3501 | return rtnval; | |
86a5659e | 3502 | } |
1db6401c | 3503 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3504 | #endif /* SYSV_SYSTEM_DIR */ |
3505 | ||
3506 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3507 | ||
3508 | DIR * | |
3509 | opendir (filename) | |
3510 | char *filename; /* name of directory */ | |
3511 | { | |
3512 | register DIR *dirp; /* -> malloc'ed storage */ | |
3513 | register int fd; /* file descriptor for read */ | |
3514 | struct stat sbuf; /* result of fstat */ | |
3515 | ||
68c45bf0 | 3516 | fd = emacs_open (filename, O_RDONLY, 0); |
86a5659e JB |
3517 | if (fd < 0) |
3518 | return 0; | |
3519 | ||
9ac0d9e0 | 3520 | BLOCK_INPUT; |
86a5659e JB |
3521 | if (fstat (fd, &sbuf) < 0 |
3522 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3523 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3524 | { | |
68c45bf0 | 3525 | emacs_close (fd); |
9ac0d9e0 | 3526 | UNBLOCK_INPUT; |
86a5659e JB |
3527 | return 0; /* bad luck today */ |
3528 | } | |
9ac0d9e0 | 3529 | UNBLOCK_INPUT; |
86a5659e JB |
3530 | |
3531 | dirp->dd_fd = fd; | |
3532 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3533 | ||
3534 | return dirp; | |
3535 | } | |
3536 | ||
3537 | void | |
3538 | closedir (dirp) | |
3539 | register DIR *dirp; /* stream from opendir */ | |
3540 | { | |
68c45bf0 | 3541 | emacs_close (dirp->dd_fd); |
9ac0d9e0 | 3542 | xfree ((char *) dirp); |
86a5659e JB |
3543 | } |
3544 | ||
3545 | ||
3546 | #ifndef VMS | |
3547 | #define DIRSIZ 14 | |
3548 | struct olddir | |
3549 | { | |
3550 | ino_t od_ino; /* inode */ | |
3551 | char od_name[DIRSIZ]; /* filename */ | |
3552 | }; | |
3553 | #endif /* not VMS */ | |
3554 | ||
3555 | struct direct dir_static; /* simulated directory contents */ | |
3556 | ||
3557 | /* ARGUSED */ | |
3558 | struct direct * | |
3559 | readdir (dirp) | |
3560 | register DIR *dirp; /* stream from opendir */ | |
3561 | { | |
3562 | #ifndef VMS | |
3563 | register struct olddir *dp; /* -> directory data */ | |
3564 | #else /* VMS */ | |
3565 | register struct dir$_name *dp; /* -> directory data */ | |
3566 | register struct dir$_version *dv; /* -> version data */ | |
3567 | #endif /* VMS */ | |
3568 | ||
3569 | for (; ;) | |
3570 | { | |
3571 | if (dirp->dd_loc >= dirp->dd_size) | |
3572 | dirp->dd_loc = dirp->dd_size = 0; | |
3573 | ||
3574 | if (dirp->dd_size == 0 /* refill buffer */ | |
68c45bf0 | 3575 | && (dirp->dd_size = emacs_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) |
86a5659e JB |
3576 | return 0; |
3577 | ||
3578 | #ifndef VMS | |
3579 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3580 | dirp->dd_loc += sizeof (struct olddir); | |
3581 | ||
3582 | if (dp->od_ino != 0) /* not deleted entry */ | |
3583 | { | |
3584 | dir_static.d_ino = dp->od_ino; | |
3585 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3586 | dir_static.d_name[DIRSIZ] = '\0'; | |
3587 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3588 | dir_static.d_reclen = sizeof (struct direct) | |
3589 | - MAXNAMLEN + 3 | |
3590 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3591 | return &dir_static; /* -> simulated structure */ | |
3592 | } | |
3593 | #else /* VMS */ | |
3594 | dp = (struct dir$_name *) dirp->dd_buf; | |
3595 | if (dirp->dd_loc == 0) | |
3596 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3597 | : dp->dir$b_namecount; | |
3598 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3599 | dir_static.d_ino = dv->dir$w_fid_num; | |
3600 | dir_static.d_namlen = dp->dir$b_namecount; | |
3601 | dir_static.d_reclen = sizeof (struct direct) | |
3602 | - MAXNAMLEN + 3 | |
3603 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3604 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3605 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3606 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3607 | return &dir_static; | |
3608 | #endif /* VMS */ | |
3609 | } | |
3610 | } | |
3611 | ||
3612 | #ifdef VMS | |
3613 | /* readdirver is just like readdir except it returns all versions of a file | |
3614 | as separate entries. */ | |
3615 | ||
3616 | /* ARGUSED */ | |
3617 | struct direct * | |
3618 | readdirver (dirp) | |
3619 | register DIR *dirp; /* stream from opendir */ | |
3620 | { | |
3621 | register struct dir$_name *dp; /* -> directory data */ | |
3622 | register struct dir$_version *dv; /* -> version data */ | |
3623 | ||
3624 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3625 | dirp->dd_loc = dirp->dd_size = 0; | |
3626 | ||
3627 | if (dirp->dd_size == 0 /* refill buffer */ | |
3628 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3629 | return 0; | |
3630 | ||
3631 | dp = (struct dir$_name *) dirp->dd_buf; | |
3632 | if (dirp->dd_loc == 0) | |
3633 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3634 | : dp->dir$b_namecount; | |
3635 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3636 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3637 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3638 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3639 | dir_static.d_ino = dv->dir$w_fid_num; | |
3640 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3641 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3642 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3643 | return &dir_static; | |
3644 | } | |
3645 | ||
3646 | #endif /* VMS */ | |
3647 | ||
3648 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3649 | |
3650 | \f | |
53ea491a | 3651 | int |
061ea326 | 3652 | set_file_times (filename, atime, mtime) |
8334eb21 | 3653 | char *filename; |
53ea491a KH |
3654 | EMACS_TIME atime, mtime; |
3655 | { | |
3656 | #ifdef HAVE_UTIMES | |
3657 | struct timeval tv[2]; | |
3658 | tv[0] = atime; | |
3659 | tv[1] = mtime; | |
8334eb21 RS |
3660 | return utimes (filename, tv); |
3661 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3662 | struct utimbuf utb; |
3663 | utb.actime = EMACS_SECS (atime); | |
3664 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3665 | return utime (filename, &utb); |
3666 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3667 | } |
3668 | \f | |
23524fb9 JB |
3669 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3670 | ||
3671 | #ifndef HAVE_MKDIR | |
3672 | /* | |
3673 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3674 | * | |
3675 | * If you want it, it's yours. All I ask in return is that if you | |
3676 | * figure out how to do this in a Bourne Shell script you send me | |
3677 | * a copy. | |
3678 | * sdcsvax!rmr or rmr@uscd | |
3679 | * | |
3680 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3681 | * subroutine. 11Mar86; hoptoad!gnu | |
3682 | * | |
3683 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3684 | * subroutine didn't return EEXIST. It does now. | |
3685 | */ | |
3686 | ||
3687 | /* | |
3688 | * Make a directory. | |
3689 | */ | |
f3892946 RS |
3690 | #ifdef MKDIR_PROTOTYPE |
3691 | MKDIR_PROTOTYPE | |
3692 | #else | |
23524fb9 JB |
3693 | int |
3694 | mkdir (dpath, dmode) | |
3695 | char *dpath; | |
3696 | int dmode; | |
f3892946 | 3697 | #endif |
23524fb9 | 3698 | { |
039f26a4 | 3699 | int cpid, status, fd; |
23524fb9 JB |
3700 | struct stat statbuf; |
3701 | ||
3702 | if (stat (dpath, &statbuf) == 0) | |
3703 | { | |
3704 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3705 | return -1; | |
3706 | } | |
3707 | ||
3708 | /* If stat fails for a reason other than non-existence, return error */ | |
3709 | if (errno != ENOENT) | |
3710 | return -1; | |
3711 | ||
039f26a4 | 3712 | synch_process_alive = 1; |
23524fb9 JB |
3713 | switch (cpid = fork ()) |
3714 | { | |
3715 | ||
039f26a4 | 3716 | case -1: /* Error in fork */ |
23524fb9 JB |
3717 | return (-1); /* Errno is set already */ |
3718 | ||
3719 | case 0: /* Child process */ | |
3720 | /* | |
3721 | * Cheap hack to set mode of new directory. Since this | |
3722 | * child process is going away anyway, we zap its umask. | |
3723 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3724 | * directory. Does anybody care? | |
3725 | */ | |
3726 | status = umask (0); /* Get current umask */ | |
3727 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
68c45bf0 | 3728 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3729 | if (fd >= 0) |
3730 | { | |
3731 | dup2 (fd, 0); | |
3732 | dup2 (fd, 1); | |
3733 | dup2 (fd, 2); | |
3734 | } | |
23524fb9 JB |
3735 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3736 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3737 | ||
3738 | default: /* Parent process */ | |
039f26a4 | 3739 | wait_for_termination (cpid); |
23524fb9 JB |
3740 | } |
3741 | ||
039f26a4 | 3742 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3743 | { |
3744 | errno = EIO; /* We don't know why, but */ | |
3745 | return -1; /* /bin/mkdir failed */ | |
3746 | } | |
3747 | ||
3748 | return 0; | |
3749 | } | |
3750 | #endif /* not HAVE_MKDIR */ | |
3751 | ||
3752 | #ifndef HAVE_RMDIR | |
3753 | int | |
3754 | rmdir (dpath) | |
3755 | char *dpath; | |
3756 | { | |
039f26a4 | 3757 | int cpid, status, fd; |
23524fb9 JB |
3758 | struct stat statbuf; |
3759 | ||
3760 | if (stat (dpath, &statbuf) != 0) | |
3761 | { | |
3762 | /* Stat just set errno. We don't have to */ | |
3763 | return -1; | |
3764 | } | |
3765 | ||
039f26a4 | 3766 | synch_process_alive = 1; |
23524fb9 JB |
3767 | switch (cpid = fork ()) |
3768 | { | |
3769 | ||
039f26a4 | 3770 | case -1: /* Error in fork */ |
23524fb9 JB |
3771 | return (-1); /* Errno is set already */ |
3772 | ||
3773 | case 0: /* Child process */ | |
68c45bf0 | 3774 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3775 | if (fd >= 0) |
3776 | { | |
3777 | dup2 (fd, 0); | |
3778 | dup2 (fd, 1); | |
3779 | dup2 (fd, 2); | |
3780 | } | |
f560db78 RS |
3781 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3782 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3783 | ||
207bdbdb | 3784 | default: /* Parent process */ |
f560db78 | 3785 | wait_for_termination (cpid); |
23524fb9 JB |
3786 | } |
3787 | ||
f560db78 | 3788 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3789 | { |
3790 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3791 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3792 | } |
3793 | ||
3794 | return 0; | |
3795 | } | |
3796 | #endif /* !HAVE_RMDIR */ | |
3797 | ||
3798 | ||
86a5659e JB |
3799 | \f |
3800 | /* Functions for VMS */ | |
3801 | #ifdef VMS | |
91bac16a | 3802 | #include "vms-pwd.h" |
86a5659e JB |
3803 | #include <acldef.h> |
3804 | #include <chpdef.h> | |
3805 | #include <jpidef.h> | |
3806 | ||
3807 | /* Return as a string the VMS error string pertaining to STATUS. | |
3808 | Reuses the same static buffer each time it is called. */ | |
3809 | ||
3810 | char * | |
3811 | vmserrstr (status) | |
3812 | int status; /* VMS status code */ | |
3813 | { | |
3814 | int bufadr[2]; | |
3815 | short len; | |
3816 | static char buf[257]; | |
3817 | ||
3818 | bufadr[0] = sizeof buf - 1; | |
3819 | bufadr[1] = (int) buf; | |
3820 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3821 | return "untranslatable VMS error status"; | |
3822 | buf[len] = '\0'; | |
3823 | return buf; | |
3824 | } | |
3825 | ||
3826 | #ifdef access | |
3827 | #undef access | |
3828 | ||
3829 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3830 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3831 | */ | |
3832 | ||
3833 | #ifdef VMS4_4 | |
3834 | ||
3835 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3836 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3837 | ||
3838 | typedef union { | |
3839 | struct { | |
3840 | unsigned short s_buflen; | |
3841 | unsigned short s_code; | |
3842 | char *s_bufadr; | |
3843 | unsigned short *s_retlenadr; | |
3844 | } s; | |
3845 | int end; | |
3846 | } item; | |
3847 | #define buflen s.s_buflen | |
3848 | #define code s.s_code | |
3849 | #define bufadr s.s_bufadr | |
3850 | #define retlenadr s.s_retlenadr | |
3851 | ||
3852 | #define R_OK 4 /* test for read permission */ | |
3853 | #define W_OK 2 /* test for write permission */ | |
3854 | #define X_OK 1 /* test for execute (search) permission */ | |
3855 | #define F_OK 0 /* test for presence of file */ | |
3856 | ||
3857 | int | |
3858 | sys_access (path, mode) | |
3859 | char *path; | |
3860 | int mode; | |
3861 | { | |
3862 | static char *user = NULL; | |
3863 | char dir_fn[512]; | |
3864 | ||
3865 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3866 | * access can treat the directory like a file. */ | |
3867 | if (directory_file_name (path, dir_fn)) | |
3868 | path = dir_fn; | |
3869 | ||
3870 | if (mode == F_OK) | |
3871 | return access (path, mode); | |
3872 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3873 | return -1; | |
3874 | { | |
3875 | int stat; | |
3876 | int flags; | |
3877 | int acces; | |
3878 | unsigned short int dummy; | |
3879 | item itemlst[3]; | |
3880 | static int constant = ACL$C_FILE; | |
3881 | DESCRIPTOR (path_desc, path); | |
3882 | DESCRIPTOR (user_desc, user); | |
3883 | ||
3884 | flags = 0; | |
3885 | acces = 0; | |
3886 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3887 | return stat; | |
3888 | if (mode & R_OK) | |
3889 | acces |= CHP$M_READ; | |
3890 | if (mode & W_OK) | |
3891 | acces |= CHP$M_WRITE; | |
3892 | itemlst[0].buflen = sizeof (int); | |
3893 | itemlst[0].code = CHP$_FLAGS; | |
3894 | itemlst[0].bufadr = (char *) &flags; | |
3895 | itemlst[0].retlenadr = &dummy; | |
3896 | itemlst[1].buflen = sizeof (int); | |
3897 | itemlst[1].code = CHP$_ACCESS; | |
3898 | itemlst[1].bufadr = (char *) &acces; | |
3899 | itemlst[1].retlenadr = &dummy; | |
3900 | itemlst[2].end = CHP$_END; | |
3901 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3902 | return stat == SS$_NORMAL ? 0 : -1; | |
3903 | } | |
3904 | } | |
3905 | ||
3906 | #else /* not VMS4_4 */ | |
3907 | ||
3908 | #include <prvdef.h> | |
fe03522b RS |
3909 | #define ACE$M_WRITE 2 |
3910 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3911 | |
3912 | static unsigned short memid, grpid; | |
3913 | static unsigned int uic; | |
3914 | ||
3915 | /* Called from init_sys_modes, so it happens not very often | |
3916 | but at least each time Emacs is loaded. */ | |
dfcf069d | 3917 | void |
86a5659e JB |
3918 | sys_access_reinit () |
3919 | { | |
3920 | uic = 0; | |
3921 | } | |
3922 | ||
3923 | int | |
3924 | sys_access (filename, type) | |
3925 | char * filename; | |
3926 | int type; | |
3927 | { | |
3928 | struct FAB fab; | |
3929 | struct XABPRO xab; | |
3930 | int status, size, i, typecode, acl_controlled; | |
3931 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3932 | union prvdef prvmask; | |
3933 | ||
3934 | /* Get UIC and GRP values for protection checking. */ | |
3935 | if (uic == 0) | |
3936 | { | |
3937 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3938 | if (! (status & 1)) | |
3939 | return -1; | |
3940 | memid = uic & 0xFFFF; | |
3941 | grpid = uic >> 16; | |
3942 | } | |
3943 | ||
fe03522b | 3944 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3945 | return access (filename, type); |
3946 | ||
3947 | /* Check write protection. */ | |
3948 | ||
fe03522b | 3949 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 3950 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
3951 | |
3952 | /* Find privilege bits */ | |
986ffb24 | 3953 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3954 | if (! (status & 1)) |
3955 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3956 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3957 | return 0; /* BYPASS enabled */ | |
3958 | fab = cc$rms_fab; | |
3959 | fab.fab$b_fac = FAB$M_GET; | |
3960 | fab.fab$l_fna = filename; | |
3961 | fab.fab$b_fns = strlen (filename); | |
3962 | fab.fab$l_xab = &xab; | |
3963 | xab = cc$rms_xabpro; | |
3964 | xab.xab$l_aclbuf = aclbuf; | |
3965 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3966 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3967 | if (! (status & 1)) |
3968 | return -1; | |
986ffb24 | 3969 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 3970 | /* Check system access */ |
ea5a0917 | 3971 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
3972 | return 0; |
3973 | /* Check ACL entries, if any */ | |
3974 | acl_controlled = 0; | |
3975 | if (xab.xab$w_acllen > 0) | |
3976 | { | |
3977 | aclptr = aclbuf; | |
3978 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3979 | while (*aclptr && aclptr < aclend) | |
3980 | { | |
3981 | size = (*aclptr & 0xff) / 4; | |
3982 | typecode = (*aclptr >> 8) & 0xff; | |
3983 | if (typecode == ACE$C_KEYID) | |
3984 | for (i = size - 1; i > 1; i--) | |
3985 | if (aclptr[i] == uic) | |
3986 | { | |
3987 | acl_controlled = 1; | |
3988 | if (aclptr[1] & ACE$M_WRITE) | |
3989 | return 0; /* Write access through ACL */ | |
3990 | } | |
3991 | aclptr = &aclptr[size]; | |
3992 | } | |
3993 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3994 | return -1; | |
3995 | } | |
3996 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 3997 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 3998 | return 0; |
ea5a0917 | 3999 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 4000 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
4001 | return 0; /* Group writable */ |
4002 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 4003 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 4004 | return 0; /* Owner writable */ |
86a5659e | 4005 | |
ea5a0917 | 4006 | return -1; /* Not writable */ |
86a5659e JB |
4007 | } |
4008 | #endif /* not VMS4_4 */ | |
4009 | #endif /* access */ | |
4010 | ||
4011 | static char vtbuf[NAM$C_MAXRSS+1]; | |
4012 | ||
4013 | /* translate a vms file spec to a unix path */ | |
4014 | char * | |
4015 | sys_translate_vms (vfile) | |
4016 | char * vfile; | |
4017 | { | |
4018 | char * p; | |
4019 | char * targ; | |
4020 | ||
4021 | if (!vfile) | |
4022 | return 0; | |
4023 | ||
4024 | targ = vtbuf; | |
4025 | ||
4026 | /* leading device or logical name is a root directory */ | |
4027 | if (p = strchr (vfile, ':')) | |
4028 | { | |
4029 | *targ++ = '/'; | |
4030 | while (vfile < p) | |
4031 | *targ++ = *vfile++; | |
4032 | vfile++; | |
4033 | *targ++ = '/'; | |
4034 | } | |
4035 | p = vfile; | |
4036 | if (*p == '[' || *p == '<') | |
4037 | { | |
4038 | while (*++vfile != *p + 2) | |
4039 | switch (*vfile) | |
4040 | { | |
4041 | case '.': | |
4042 | if (vfile[-1] == *p) | |
4043 | *targ++ = '.'; | |
4044 | *targ++ = '/'; | |
4045 | break; | |
4046 | ||
4047 | case '-': | |
4048 | *targ++ = '.'; | |
4049 | *targ++ = '.'; | |
4050 | break; | |
4051 | ||
4052 | default: | |
4053 | *targ++ = *vfile; | |
4054 | break; | |
4055 | } | |
4056 | vfile++; | |
4057 | *targ++ = '/'; | |
4058 | } | |
4059 | while (*vfile) | |
4060 | *targ++ = *vfile++; | |
4061 | ||
4062 | return vtbuf; | |
4063 | } | |
4064 | ||
4065 | static char utbuf[NAM$C_MAXRSS+1]; | |
4066 | ||
4067 | /* translate a unix path to a VMS file spec */ | |
4068 | char * | |
4069 | sys_translate_unix (ufile) | |
4070 | char * ufile; | |
4071 | { | |
4072 | int slash_seen = 0; | |
4073 | char *p; | |
4074 | char * targ; | |
4075 | ||
4076 | if (!ufile) | |
4077 | return 0; | |
4078 | ||
4079 | targ = utbuf; | |
4080 | ||
4081 | if (*ufile == '/') | |
4082 | { | |
4083 | ufile++; | |
4084 | } | |
4085 | ||
4086 | while (*ufile) | |
4087 | { | |
4088 | switch (*ufile) | |
4089 | { | |
4090 | case '/': | |
4091 | if (slash_seen) | |
4092 | if (index (&ufile[1], '/')) | |
4093 | *targ++ = '.'; | |
4094 | else | |
4095 | *targ++ = ']'; | |
4096 | else | |
4097 | { | |
4098 | *targ++ = ':'; | |
4099 | if (index (&ufile[1], '/')) | |
4100 | *targ++ = '['; | |
4101 | slash_seen = 1; | |
4102 | } | |
4103 | break; | |
4104 | ||
4105 | case '.': | |
4106 | if (strncmp (ufile, "./", 2) == 0) | |
4107 | { | |
4108 | if (!slash_seen) | |
4109 | { | |
4110 | *targ++ = '['; | |
4111 | slash_seen = 1; | |
4112 | } | |
4113 | ufile++; /* skip the dot */ | |
4114 | if (index (&ufile[1], '/')) | |
4115 | *targ++ = '.'; | |
4116 | else | |
4117 | *targ++ = ']'; | |
4118 | } | |
4119 | else if (strncmp (ufile, "../", 3) == 0) | |
4120 | { | |
4121 | if (!slash_seen) | |
4122 | { | |
4123 | *targ++ = '['; | |
4124 | slash_seen = 1; | |
4125 | } | |
4126 | *targ++ = '-'; | |
4127 | ufile += 2; /* skip the dots */ | |
4128 | if (index (&ufile[1], '/')) | |
4129 | *targ++ = '.'; | |
4130 | else | |
4131 | *targ++ = ']'; | |
4132 | } | |
4133 | else | |
4134 | *targ++ = *ufile; | |
4135 | break; | |
4136 | ||
4137 | default: | |
4138 | *targ++ = *ufile; | |
4139 | break; | |
4140 | } | |
4141 | ufile++; | |
4142 | } | |
4143 | *targ = '\0'; | |
4144 | ||
4145 | return utbuf; | |
4146 | } | |
4147 | ||
4148 | char * | |
4149 | getwd (pathname) | |
4150 | char *pathname; | |
4151 | { | |
f4a7e5bd | 4152 | char *ptr, *val; |
210b2b4f | 4153 | extern char *getcwd (); |
86a5659e | 4154 | |
210b2b4f JB |
4155 | #define MAXPATHLEN 1024 |
4156 | ||
9ac0d9e0 | 4157 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4158 | val = getcwd (ptr, MAXPATHLEN); |
4159 | if (val == 0) | |
4160 | { | |
4161 | xfree (ptr); | |
4162 | return val; | |
4163 | } | |
210b2b4f | 4164 | strcpy (pathname, ptr); |
9ac0d9e0 | 4165 | xfree (ptr); |
210b2b4f JB |
4166 | |
4167 | return pathname; | |
86a5659e JB |
4168 | } |
4169 | ||
dfcf069d | 4170 | int |
86a5659e JB |
4171 | getppid () |
4172 | { | |
4173 | long item_code = JPI$_OWNER; | |
4174 | unsigned long parent_id; | |
4175 | int status; | |
4176 | ||
4177 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4178 | { | |
4179 | errno = EVMSERR; | |
4180 | vaxc$errno = status; | |
4181 | return -1; | |
4182 | } | |
4183 | return parent_id; | |
4184 | } | |
4185 | ||
4186 | #undef getuid | |
4187 | unsigned | |
4188 | sys_getuid () | |
4189 | { | |
4190 | return (getgid () << 16) | getuid (); | |
4191 | } | |
4192 | ||
68c45bf0 | 4193 | #undef read |
86a5659e JB |
4194 | int |
4195 | sys_read (fildes, buf, nbyte) | |
4196 | int fildes; | |
4197 | char *buf; | |
4198 | unsigned int nbyte; | |
4199 | { | |
4200 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4201 | } | |
4202 | ||
4203 | #if 0 | |
4204 | int | |
4205 | sys_write (fildes, buf, nbyte) | |
4206 | int fildes; | |
4207 | char *buf; | |
4208 | unsigned int nbyte; | |
4209 | { | |
4210 | register int nwrote, rtnval = 0; | |
4211 | ||
4212 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4213 | nbyte -= nwrote; | |
4214 | buf += nwrote; | |
4215 | rtnval += nwrote; | |
4216 | } | |
4217 | if (nwrote < 0) | |
4218 | return rtnval ? rtnval : -1; | |
4219 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4220 | return rtnval ? rtnval : -1; | |
4221 | return (rtnval + nwrote); | |
4222 | } | |
4223 | #endif /* 0 */ | |
4224 | ||
4225 | /* | |
4226 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4227 | * end with a newline (carriage return) character, and if they | |
4228 | * don't it adds one (nice of it isn't it!) | |
4229 | * | |
4230 | * Thus we do this stupidity below. | |
4231 | */ | |
4232 | ||
68c45bf0 | 4233 | #undef write |
86a5659e JB |
4234 | int |
4235 | sys_write (fildes, buf, nbytes) | |
4236 | int fildes; | |
4237 | char *buf; | |
4238 | unsigned int nbytes; | |
4239 | { | |
4240 | register char *p; | |
4241 | register char *e; | |
23b0668c JB |
4242 | int sum = 0; |
4243 | struct stat st; | |
4244 | ||
4245 | fstat (fildes, &st); | |
86a5659e | 4246 | p = buf; |
86a5659e JB |
4247 | while (nbytes > 0) |
4248 | { | |
23b0668c JB |
4249 | int len, retval; |
4250 | ||
4251 | /* Handle fixed-length files with carriage control. */ | |
4252 | if (st.st_fab_rfm == FAB$C_FIX | |
4253 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4254 | { | |
4255 | len = st.st_fab_mrs; | |
4256 | retval = write (fildes, p, min (len, nbytes)); | |
4257 | if (retval != len) | |
4258 | return -1; | |
4259 | retval++; /* This skips the implied carriage control */ | |
4260 | } | |
4261 | else | |
4262 | { | |
4263 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4264 | while (*e != '\n' && e > p) e--; | |
4265 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4266 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4267 | len = e + 1 - p; | |
4268 | retval = write (fildes, p, len); | |
4269 | if (retval != len) | |
4270 | return -1; | |
4271 | } | |
4272 | p += retval; | |
4273 | sum += retval; | |
86a5659e JB |
4274 | nbytes -= retval; |
4275 | } | |
4276 | return sum; | |
4277 | } | |
4278 | ||
4279 | /* Create file NEW copying its attributes from file OLD. If | |
4280 | OLD is 0 or does not exist, create based on the value of | |
4281 | vms_stmlf_recfm. */ | |
4282 | ||
4283 | /* Protection value the file should ultimately have. | |
4284 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4285 | static unsigned short int fab_final_pro; | |
4286 | ||
4287 | int | |
4288 | creat_copy_attrs (old, new) | |
4289 | char *old, *new; | |
4290 | { | |
4291 | struct FAB fab = cc$rms_fab; | |
4292 | struct XABPRO xabpro; | |
4293 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4294 | extern int vms_stmlf_recfm; | |
4295 | ||
4296 | if (old) | |
4297 | { | |
4298 | fab.fab$b_fac = FAB$M_GET; | |
4299 | fab.fab$l_fna = old; | |
4300 | fab.fab$b_fns = strlen (old); | |
4301 | fab.fab$l_xab = (char *) &xabpro; | |
4302 | xabpro = cc$rms_xabpro; | |
4303 | xabpro.xab$l_aclbuf = aclbuf; | |
4304 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4305 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4306 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4307 | { |
986ffb24 | 4308 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4309 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4310 | if (xabpro.xab$w_acllen > 0) | |
4311 | { | |
4312 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4313 | /* If the acl buffer was too short, redo open with longer one. | |
4314 | Wouldn't need to do this if there were some system imposed | |
4315 | limit on the size of an ACL, but I can't find any such. */ | |
4316 | { | |
4317 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4318 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4319 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4320 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4321 | else |
4322 | old = 0; | |
4323 | } | |
4324 | } | |
4325 | else | |
4326 | xabpro.xab$l_aclbuf = 0; | |
4327 | } | |
4328 | else | |
4329 | old = 0; | |
4330 | } | |
4331 | fab.fab$l_fna = new; | |
4332 | fab.fab$b_fns = strlen (new); | |
4333 | if (!old) | |
4334 | { | |
4335 | fab.fab$l_xab = 0; | |
4336 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4337 | fab.fab$b_rat = FAB$M_CR; | |
4338 | } | |
4339 | ||
4340 | /* Set the file protections such that we will be able to manipulate | |
4341 | this file. Once we are done writing and renaming it, we will set | |
4342 | the protections back. */ | |
4343 | if (old) | |
4344 | fab_final_pro = xabpro.xab$w_pro; | |
4345 | else | |
986ffb24 | 4346 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4347 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4348 | ||
4349 | /* Create the new file with either default attrs or attrs copied | |
4350 | from old file. */ | |
4351 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4352 | return -1; | |
986ffb24 | 4353 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4354 | /* As this is a "replacement" for creat, return a file descriptor |
4355 | opened for writing. */ | |
4356 | return open (new, O_WRONLY); | |
4357 | } | |
4358 | ||
4359 | #ifdef creat | |
4360 | #undef creat | |
4361 | #include <varargs.h> | |
4362 | #ifdef __GNUC__ | |
4363 | #ifndef va_count | |
4364 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4365 | #endif | |
4366 | #endif | |
4367 | ||
dfcf069d | 4368 | int |
86a5659e JB |
4369 | sys_creat (va_alist) |
4370 | va_dcl | |
4371 | { | |
eb8c3be9 | 4372 | va_list list_incrementer; |
86a5659e JB |
4373 | char *name; |
4374 | int mode; | |
4375 | int rfd; /* related file descriptor */ | |
4376 | int fd; /* Our new file descriptor */ | |
4377 | int count; | |
4378 | struct stat st_buf; | |
4379 | char rfm[12]; | |
4380 | char rat[15]; | |
4381 | char mrs[13]; | |
4382 | char fsz[13]; | |
4383 | extern int vms_stmlf_recfm; | |
4384 | ||
4385 | va_count (count); | |
eb8c3be9 JB |
4386 | va_start (list_incrementer); |
4387 | name = va_arg (list_incrementer, char *); | |
4388 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4389 | if (count > 2) |
eb8c3be9 JB |
4390 | rfd = va_arg (list_incrementer, int); |
4391 | va_end (list_incrementer); | |
86a5659e JB |
4392 | if (count > 2) |
4393 | { | |
4394 | /* Use information from the related file descriptor to set record | |
4395 | format of the newly created file. */ | |
4396 | fstat (rfd, &st_buf); | |
4397 | switch (st_buf.st_fab_rfm) | |
4398 | { | |
4399 | case FAB$C_FIX: | |
4400 | strcpy (rfm, "rfm = fix"); | |
4401 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4402 | strcpy (rat, "rat = "); | |
4403 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4404 | strcat (rat, "cr"); | |
4405 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4406 | strcat (rat, "ftn"); | |
4407 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4408 | strcat (rat, "prn"); | |
4409 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4410 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4411 | strcat (rat, ", blk"); | |
4412 | else | |
4413 | strcat (rat, "blk"); | |
4414 | return creat (name, 0, rfm, rat, mrs); | |
4415 | ||
4416 | case FAB$C_VFC: | |
4417 | strcpy (rfm, "rfm = vfc"); | |
4418 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4419 | strcpy (rat, "rat = "); | |
4420 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4421 | strcat (rat, "cr"); | |
4422 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4423 | strcat (rat, "ftn"); | |
4424 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4425 | strcat (rat, "prn"); | |
4426 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4427 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4428 | strcat (rat, ", blk"); | |
4429 | else | |
4430 | strcat (rat, "blk"); | |
4431 | return creat (name, 0, rfm, rat, fsz); | |
4432 | ||
4433 | case FAB$C_STM: | |
4434 | strcpy (rfm, "rfm = stm"); | |
4435 | break; | |
4436 | ||
4437 | case FAB$C_STMCR: | |
4438 | strcpy (rfm, "rfm = stmcr"); | |
4439 | break; | |
4440 | ||
4441 | case FAB$C_STMLF: | |
4442 | strcpy (rfm, "rfm = stmlf"); | |
4443 | break; | |
4444 | ||
4445 | case FAB$C_UDF: | |
4446 | strcpy (rfm, "rfm = udf"); | |
4447 | break; | |
4448 | ||
4449 | case FAB$C_VAR: | |
4450 | strcpy (rfm, "rfm = var"); | |
4451 | break; | |
4452 | } | |
4453 | strcpy (rat, "rat = "); | |
4454 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4455 | strcat (rat, "cr"); | |
4456 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4457 | strcat (rat, "ftn"); | |
4458 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4459 | strcat (rat, "prn"); | |
4460 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4461 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4462 | strcat (rat, ", blk"); | |
4463 | else | |
4464 | strcat (rat, "blk"); | |
4465 | } | |
4466 | else | |
4467 | { | |
4468 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4469 | strcpy (rat, "rat=cr"); | |
4470 | } | |
4471 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4472 | mode 0 to get the user's default protection. */ | |
4473 | fd = creat (name, 0, rfm, rat); | |
4474 | if (fd < 0 && errno == EEXIST) | |
4475 | { | |
4476 | if (unlink (name) < 0) | |
4477 | report_file_error ("delete", build_string (name)); | |
4478 | fd = creat (name, 0, rfm, rat); | |
4479 | } | |
4480 | return fd; | |
4481 | } | |
4482 | #endif /* creat */ | |
4483 | ||
4484 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
dfcf069d | 4485 | int |
86a5659e JB |
4486 | sys_fwrite (ptr, size, num, fp) |
4487 | register char * ptr; | |
4488 | FILE * fp; | |
4489 | { | |
4490 | register int tot = num * size; | |
4491 | ||
4492 | while (tot--) | |
4493 | fputc (*ptr++, fp); | |
dfcf069d | 4494 | return num; |
86a5659e JB |
4495 | } |
4496 | ||
4497 | /* | |
4498 | * The VMS C library routine creat actually creates a new version of an | |
4499 | * existing file rather than truncating the old version. There are times | |
4500 | * when this is not the desired behavior, for instance, when writing an | |
4501 | * auto save file (you only want one version), or when you don't have | |
4502 | * write permission in the directory containing the file (but the file | |
4503 | * itself is writable). Hence this routine, which is equivalent to | |
4504 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4505 | */ | |
4506 | int | |
4507 | vms_truncate (fn) | |
4508 | char *fn; | |
4509 | { | |
4510 | struct FAB xfab = cc$rms_fab; | |
4511 | struct RAB xrab = cc$rms_rab; | |
4512 | int status; | |
4513 | ||
4514 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4515 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4516 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4517 | xfab.fab$l_fna = fn; | |
4518 | xfab.fab$b_fns = strlen (fn); | |
4519 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4520 | xfab.fab$b_dns = 2; | |
4521 | xrab.rab$l_fab = &xfab; | |
4522 | ||
4523 | /* This gibberish opens the file, positions to the first record, and | |
4524 | deletes all records from there until the end of file. */ | |
986ffb24 | 4525 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4526 | { |
986ffb24 JB |
4527 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4528 | (SYS$FIND (&xrab) & 01) == 01 && | |
4529 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4530 | status = 0; |
4531 | else | |
4532 | status = -1; | |
4533 | } | |
4534 | else | |
4535 | status = -1; | |
986ffb24 | 4536 | SYS$CLOSE (&xfab); |
86a5659e JB |
4537 | return status; |
4538 | } | |
4539 | ||
4540 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4541 | SYSPRV or a readable SYSUAF.DAT. */ | |
4542 | ||
4543 | #ifdef READ_SYSUAF | |
4544 | /* | |
4545 | * getuaf.c | |
4546 | * | |
4547 | * Routine to read the VMS User Authorization File and return | |
4548 | * a specific user's record. | |
4549 | */ | |
4550 | ||
4551 | static struct UAF retuaf; | |
4552 | ||
4553 | struct UAF * | |
4554 | get_uaf_name (uname) | |
4555 | char * uname; | |
4556 | { | |
4557 | register status; | |
4558 | struct FAB uaf_fab; | |
4559 | struct RAB uaf_rab; | |
4560 | ||
4561 | uaf_fab = cc$rms_fab; | |
4562 | uaf_rab = cc$rms_rab; | |
4563 | /* initialize fab fields */ | |
4564 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4565 | uaf_fab.fab$b_fns = 21; | |
4566 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4567 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4568 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4569 | /* initialize rab fields */ | |
4570 | uaf_rab.rab$l_fab = &uaf_fab; | |
4571 | /* open the User Authorization File */ | |
986ffb24 | 4572 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4573 | if (!(status&1)) |
4574 | { | |
4575 | errno = EVMSERR; | |
4576 | vaxc$errno = status; | |
4577 | return 0; | |
4578 | } | |
986ffb24 | 4579 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4580 | if (!(status&1)) |
4581 | { | |
4582 | errno = EVMSERR; | |
4583 | vaxc$errno = status; | |
4584 | return 0; | |
4585 | } | |
4586 | /* read the requested record - index is in uname */ | |
4587 | uaf_rab.rab$l_kbf = uname; | |
4588 | uaf_rab.rab$b_ksz = strlen (uname); | |
4589 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4590 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4591 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4592 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4593 | if (!(status&1)) |
4594 | { | |
4595 | errno = EVMSERR; | |
4596 | vaxc$errno = status; | |
4597 | return 0; | |
4598 | } | |
4599 | /* close the User Authorization File */ | |
986ffb24 | 4600 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4601 | if (!(status&1)) |
4602 | { | |
4603 | errno = EVMSERR; | |
4604 | vaxc$errno = status; | |
4605 | return 0; | |
4606 | } | |
986ffb24 | 4607 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4608 | if (!(status&1)) |
4609 | { | |
4610 | errno = EVMSERR; | |
4611 | vaxc$errno = status; | |
4612 | return 0; | |
4613 | } | |
4614 | return &retuaf; | |
4615 | } | |
4616 | ||
4617 | struct UAF * | |
4618 | get_uaf_uic (uic) | |
4619 | unsigned long uic; | |
4620 | { | |
4621 | register status; | |
4622 | struct FAB uaf_fab; | |
4623 | struct RAB uaf_rab; | |
4624 | ||
4625 | uaf_fab = cc$rms_fab; | |
4626 | uaf_rab = cc$rms_rab; | |
4627 | /* initialize fab fields */ | |
4628 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4629 | uaf_fab.fab$b_fns = 21; | |
4630 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4631 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4632 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4633 | /* initialize rab fields */ | |
4634 | uaf_rab.rab$l_fab = &uaf_fab; | |
4635 | /* open the User Authorization File */ | |
986ffb24 | 4636 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4637 | if (!(status&1)) |
4638 | { | |
4639 | errno = EVMSERR; | |
4640 | vaxc$errno = status; | |
4641 | return 0; | |
4642 | } | |
986ffb24 | 4643 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4644 | if (!(status&1)) |
4645 | { | |
4646 | errno = EVMSERR; | |
4647 | vaxc$errno = status; | |
4648 | return 0; | |
4649 | } | |
4650 | /* read the requested record - index is in uic */ | |
4651 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4652 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4653 | uaf_rab.rab$b_ksz = sizeof uic; | |
4654 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4655 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4656 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4657 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4658 | if (!(status&1)) |
4659 | { | |
4660 | errno = EVMSERR; | |
4661 | vaxc$errno = status; | |
4662 | return 0; | |
4663 | } | |
4664 | /* close the User Authorization File */ | |
986ffb24 | 4665 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4666 | if (!(status&1)) |
4667 | { | |
4668 | errno = EVMSERR; | |
4669 | vaxc$errno = status; | |
4670 | return 0; | |
4671 | } | |
986ffb24 | 4672 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4673 | if (!(status&1)) |
4674 | { | |
4675 | errno = EVMSERR; | |
4676 | vaxc$errno = status; | |
4677 | return 0; | |
4678 | } | |
4679 | return &retuaf; | |
4680 | } | |
4681 | ||
4682 | static struct passwd retpw; | |
4683 | ||
4684 | struct passwd * | |
4685 | cnv_uaf_pw (up) | |
4686 | struct UAF * up; | |
4687 | { | |
4688 | char * ptr; | |
4689 | ||
4690 | /* copy these out first because if the username is 32 chars, the next | |
4691 | section will overwrite the first byte of the UIC */ | |
4692 | retpw.pw_uid = up->uaf$w_mem; | |
4693 | retpw.pw_gid = up->uaf$w_grp; | |
4694 | ||
ea5a0917 | 4695 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4696 | byte beyond the end of the field, but what the heck... */ |
4697 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4698 | while (ptr[-1] == ' ') | |
4699 | ptr--; | |
4700 | *ptr = '\0'; | |
4701 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4702 | ||
4703 | /* the rest of these are counted ascii strings */ | |
4704 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4705 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4706 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4707 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4708 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4709 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4710 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4711 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4712 | ||
4713 | return &retpw; | |
4714 | } | |
4715 | #else /* not READ_SYSUAF */ | |
4716 | static struct passwd retpw; | |
4717 | #endif /* not READ_SYSUAF */ | |
4718 | ||
4719 | struct passwd * | |
4720 | getpwnam (name) | |
4721 | char * name; | |
4722 | { | |
4723 | #ifdef READ_SYSUAF | |
4724 | struct UAF *up; | |
4725 | #else | |
4726 | char * user; | |
4727 | char * dir; | |
4728 | unsigned char * full; | |
4729 | #endif /* READ_SYSUAF */ | |
4730 | char *ptr = name; | |
4731 | ||
4732 | while (*ptr) | |
4733 | { | |
4734 | if ('a' <= *ptr && *ptr <= 'z') | |
4735 | *ptr -= 040; | |
4736 | ptr++; | |
4737 | } | |
4738 | #ifdef READ_SYSUAF | |
4739 | if (!(up = get_uaf_name (name))) | |
4740 | return 0; | |
4741 | return cnv_uaf_pw (up); | |
4742 | #else | |
4743 | if (strcmp (name, getenv ("USER")) == 0) | |
4744 | { | |
4745 | retpw.pw_uid = getuid (); | |
4746 | retpw.pw_gid = getgid (); | |
4747 | strcpy (retpw.pw_name, name); | |
4748 | if (full = egetenv ("FULLNAME")) | |
4749 | strcpy (retpw.pw_gecos, full); | |
4750 | else | |
4751 | *retpw.pw_gecos = '\0'; | |
4752 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4753 | *retpw.pw_shell = '\0'; | |
4754 | return &retpw; | |
4755 | } | |
4756 | else | |
4757 | return 0; | |
4758 | #endif /* not READ_SYSUAF */ | |
4759 | } | |
4760 | ||
4761 | struct passwd * | |
4762 | getpwuid (uid) | |
4763 | unsigned long uid; | |
4764 | { | |
4765 | #ifdef READ_SYSUAF | |
4766 | struct UAF * up; | |
4767 | ||
4768 | if (!(up = get_uaf_uic (uid))) | |
4769 | return 0; | |
4770 | return cnv_uaf_pw (up); | |
4771 | #else | |
4772 | if (uid == sys_getuid ()) | |
4773 | return getpwnam (egetenv ("USER")); | |
4774 | else | |
4775 | return 0; | |
4776 | #endif /* not READ_SYSUAF */ | |
4777 | } | |
4778 | ||
4779 | /* return total address space available to the current process. This is | |
4780 | the sum of the current p0 size, p1 size and free page table entries | |
4781 | available. */ | |
dfcf069d | 4782 | int |
86a5659e JB |
4783 | vlimit () |
4784 | { | |
4785 | int item_code; | |
4786 | unsigned long free_pages; | |
4787 | unsigned long frep0va; | |
4788 | unsigned long frep1va; | |
4789 | register status; | |
4790 | ||
4791 | item_code = JPI$_FREPTECNT; | |
4792 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4793 | { | |
4794 | errno = EVMSERR; | |
4795 | vaxc$errno = status; | |
4796 | return -1; | |
4797 | } | |
4798 | free_pages *= 512; | |
4799 | ||
4800 | item_code = JPI$_FREP0VA; | |
4801 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4802 | { | |
4803 | errno = EVMSERR; | |
4804 | vaxc$errno = status; | |
4805 | return -1; | |
4806 | } | |
4807 | item_code = JPI$_FREP1VA; | |
4808 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4809 | { | |
4810 | errno = EVMSERR; | |
4811 | vaxc$errno = status; | |
4812 | return -1; | |
4813 | } | |
4814 | ||
4815 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4816 | } | |
4817 | ||
dfcf069d | 4818 | int |
86a5659e JB |
4819 | define_logical_name (varname, string) |
4820 | char *varname; | |
4821 | char *string; | |
4822 | { | |
4823 | struct dsc$descriptor_s strdsc = | |
4824 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4825 | struct dsc$descriptor_s envdsc = | |
4826 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4827 | struct dsc$descriptor_s lnmdsc = | |
4828 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4829 | ||
4830 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4831 | } | |
4832 | ||
dfcf069d | 4833 | int |
86a5659e JB |
4834 | delete_logical_name (varname) |
4835 | char *varname; | |
4836 | { | |
4837 | struct dsc$descriptor_s envdsc = | |
4838 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4839 | struct dsc$descriptor_s lnmdsc = | |
4840 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4841 | ||
4842 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4843 | } | |
4844 | ||
dfcf069d | 4845 | int |
86a5659e | 4846 | ulimit () |
dfcf069d AS |
4847 | { |
4848 | return 0; | |
4849 | } | |
86a5659e | 4850 | |
dfcf069d | 4851 | int |
86a5659e | 4852 | setpgrp () |
dfcf069d AS |
4853 | { |
4854 | return 0; | |
4855 | } | |
86a5659e | 4856 | |
dfcf069d | 4857 | int |
86a5659e JB |
4858 | execvp () |
4859 | { | |
4860 | error ("execvp system call not implemented"); | |
dfcf069d | 4861 | return -1; |
86a5659e JB |
4862 | } |
4863 | ||
4864 | int | |
4865 | rename (from, to) | |
4866 | char *from, *to; | |
4867 | { | |
4868 | int status; | |
4869 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4870 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4871 | char from_esn[NAM$C_MAXRSS]; | |
4872 | char to_esn[NAM$C_MAXRSS]; | |
4873 | ||
4874 | from_fab.fab$l_fna = from; | |
4875 | from_fab.fab$b_fns = strlen (from); | |
4876 | from_fab.fab$l_nam = &from_nam; | |
4877 | from_fab.fab$l_fop = FAB$M_NAM; | |
4878 | ||
4879 | from_nam.nam$l_esa = from_esn; | |
4880 | from_nam.nam$b_ess = sizeof from_esn; | |
4881 | ||
4882 | to_fab.fab$l_fna = to; | |
4883 | to_fab.fab$b_fns = strlen (to); | |
4884 | to_fab.fab$l_nam = &to_nam; | |
4885 | to_fab.fab$l_fop = FAB$M_NAM; | |
4886 | ||
4887 | to_nam.nam$l_esa = to_esn; | |
4888 | to_nam.nam$b_ess = sizeof to_esn; | |
4889 | ||
4890 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4891 | ||
4892 | if (status & 1) | |
4893 | return 0; | |
4894 | else | |
4895 | { | |
4896 | if (status == RMS$_DEV) | |
4897 | errno = EXDEV; | |
4898 | else | |
4899 | errno = EVMSERR; | |
4900 | vaxc$errno = status; | |
4901 | return -1; | |
4902 | } | |
4903 | } | |
4904 | ||
4905 | /* This function renames a file like `rename', but it strips | |
4906 | the version number from the "to" filename, such that the "to" file is | |
4907 | will always be a new version. It also sets the file protection once it is | |
4908 | finished. The protection that we will use is stored in fab_final_pro, | |
4909 | and was set when we did a creat_copy_attrs to create the file that we | |
4910 | are renaming. | |
4911 | ||
4912 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4913 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4914 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4915 | the W and D bits together. */ | |
4916 | ||
4917 | ||
4918 | static struct fibdef fib; /* We need this initialized to zero */ | |
4919 | char vms_file_written[NAM$C_MAXRSS]; | |
4920 | ||
4921 | int | |
4922 | rename_sans_version (from,to) | |
4923 | char *from, *to; | |
4924 | { | |
4925 | short int chan; | |
4926 | int stat; | |
4927 | short int iosb[4]; | |
4928 | int status; | |
4929 | struct FAB to_fab = cc$rms_fab; | |
4930 | struct NAM to_nam = cc$rms_nam; | |
4931 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4932 | struct dsc$descriptor fib_attr[2] | |
4933 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4934 | char to_esn[NAM$C_MAXRSS]; | |
4935 | ||
4936 | $DESCRIPTOR (disk,to_esn); | |
4937 | ||
4938 | to_fab.fab$l_fna = to; | |
4939 | to_fab.fab$b_fns = strlen (to); | |
4940 | to_fab.fab$l_nam = &to_nam; | |
4941 | to_fab.fab$l_fop = FAB$M_NAM; | |
4942 | ||
4943 | to_nam.nam$l_esa = to_esn; | |
4944 | to_nam.nam$b_ess = sizeof to_esn; | |
4945 | ||
4946 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4947 | ||
4948 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4949 | *(to_nam.nam$l_ver) = '\0'; | |
4950 | ||
4951 | stat = rename (from, to_esn); | |
4952 | if (stat < 0) | |
4953 | return stat; | |
4954 | ||
4955 | strcpy (vms_file_written, to_esn); | |
4956 | ||
4957 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4958 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4959 | ||
4960 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4961 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4962 | |
4963 | /* Copy these fields into the fib */ | |
4964 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4965 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4966 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4967 | ||
986ffb24 | 4968 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4969 | |
986ffb24 | 4970 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4971 | if (!stat) |
986ffb24 JB |
4972 | LIB$SIGNAL (stat); |
4973 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4974 | 0, 0, 0, &fib_attr, 0); |
4975 | if (!stat) | |
986ffb24 JB |
4976 | LIB$SIGNAL (stat); |
4977 | stat = SYS$DASSGN (chan); | |
86a5659e | 4978 | if (!stat) |
986ffb24 | 4979 | LIB$SIGNAL (stat); |
0137dbf7 | 4980 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4981 | return 0; |
4982 | } | |
4983 | ||
dfcf069d | 4984 | int |
86a5659e JB |
4985 | link (file, new) |
4986 | char * file, * new; | |
4987 | { | |
4988 | register status; | |
4989 | struct FAB fab; | |
4990 | struct NAM nam; | |
4991 | unsigned short fid[3]; | |
4992 | char esa[NAM$C_MAXRSS]; | |
4993 | ||
4994 | fab = cc$rms_fab; | |
4995 | fab.fab$l_fop = FAB$M_OFP; | |
4996 | fab.fab$l_fna = file; | |
4997 | fab.fab$b_fns = strlen (file); | |
4998 | fab.fab$l_nam = &nam; | |
4999 | ||
5000 | nam = cc$rms_nam; | |
5001 | nam.nam$l_esa = esa; | |
5002 | nam.nam$b_ess = NAM$C_MAXRSS; | |
5003 | ||
5004 | status = SYS$PARSE (&fab); | |
5005 | if ((status & 1) == 0) | |
5006 | { | |
5007 | errno = EVMSERR; | |
5008 | vaxc$errno = status; | |
5009 | return -1; | |
5010 | } | |
5011 | status = SYS$SEARCH (&fab); | |
5012 | if ((status & 1) == 0) | |
5013 | { | |
5014 | errno = EVMSERR; | |
5015 | vaxc$errno = status; | |
5016 | return -1; | |
5017 | } | |
5018 | ||
5019 | fid[0] = nam.nam$w_fid[0]; | |
5020 | fid[1] = nam.nam$w_fid[1]; | |
5021 | fid[2] = nam.nam$w_fid[2]; | |
5022 | ||
5023 | fab.fab$l_fna = new; | |
5024 | fab.fab$b_fns = strlen (new); | |
5025 | ||
5026 | status = SYS$PARSE (&fab); | |
5027 | if ((status & 1) == 0) | |
5028 | { | |
5029 | errno = EVMSERR; | |
5030 | vaxc$errno = status; | |
5031 | return -1; | |
5032 | } | |
5033 | ||
5034 | nam.nam$w_fid[0] = fid[0]; | |
5035 | nam.nam$w_fid[1] = fid[1]; | |
5036 | nam.nam$w_fid[2] = fid[2]; | |
5037 | ||
5038 | nam.nam$l_esa = nam.nam$l_name; | |
5039 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
5040 | ||
5041 | status = SYS$ENTER (&fab); | |
5042 | if ((status & 1) == 0) | |
5043 | { | |
5044 | errno = EVMSERR; | |
5045 | vaxc$errno = status; | |
5046 | return -1; | |
5047 | } | |
5048 | ||
5049 | return 0; | |
5050 | } | |
5051 | ||
dfcf069d | 5052 | void |
86a5659e JB |
5053 | croak (badfunc) |
5054 | char *badfunc; | |
5055 | { | |
5056 | printf ("%s not yet implemented\r\n", badfunc); | |
5057 | reset_sys_modes (); | |
5058 | exit (1); | |
5059 | } | |
5060 | ||
5061 | long | |
5062 | random () | |
5063 | { | |
5064 | /* Arrange to return a range centered on zero. */ | |
5065 | return rand () - (1 << 30); | |
5066 | } | |
5067 | ||
dfcf069d | 5068 | void |
86a5659e JB |
5069 | srandom (seed) |
5070 | { | |
5071 | srand (seed); | |
5072 | } | |
5073 | #endif /* VMS */ | |
5074 | \f | |
b97ab886 | 5075 | #ifdef AIXHFT |
86a5659e JB |
5076 | |
5077 | /* Called from init_sys_modes. */ | |
dfcf069d | 5078 | void |
86a5659e JB |
5079 | hft_init () |
5080 | { | |
5081 | int junk; | |
5082 | ||
5083 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5084 | if we are on an HFT by trying to get an HFT error code. If this | |
5085 | call fails, we're not on an HFT. */ | |
5086 | #ifdef IBMR2AIX | |
5087 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5088 | return; | |
5089 | #else /* not IBMR2AIX */ | |
5090 | if (ioctl (0, HFQEIO, 0) < 0) | |
5091 | return; | |
5092 | #endif /* not IBMR2AIX */ | |
5093 | ||
5094 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5095 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5096 | there's no way to determine the old mapping, so in reset_sys_modes | |
5097 | we need to assume that the normal map had been present. Of course, this | |
5098 | code also doesn't help if on a terminal emulator which doesn't understand | |
c4ea52a6 | 5099 | HFT VTD's. */ |
86a5659e JB |
5100 | { |
5101 | struct hfbuf buf; | |
5102 | struct hfkeymap keymap; | |
5103 | ||
5104 | buf.hf_bufp = (char *)&keymap; | |
5105 | buf.hf_buflen = sizeof (keymap); | |
5106 | keymap.hf_nkeys = 2; | |
5107 | keymap.hfkey[0].hf_kpos = 15; | |
5108 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5109 | #ifdef IBMR2AIX | |
5110 | keymap.hfkey[0].hf_keyidh = '<'; | |
5111 | #else /* not IBMR2AIX */ | |
5112 | keymap.hfkey[0].hf_page = '<'; | |
5113 | #endif /* not IBMR2AIX */ | |
5114 | keymap.hfkey[0].hf_char = 127; | |
5115 | keymap.hfkey[1].hf_kpos = 15; | |
5116 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5117 | #ifdef IBMR2AIX | |
5118 | keymap.hfkey[1].hf_keyidh = '<'; | |
5119 | #else /* not IBMR2AIX */ | |
5120 | keymap.hfkey[1].hf_page = '<'; | |
5121 | #endif /* not IBMR2AIX */ | |
5122 | keymap.hfkey[1].hf_char = 127; | |
5123 | hftctl (0, HFSKBD, &buf); | |
5124 | } | |
5125 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
5126 | at times. */ | |
5127 | line_ins_del_ok = char_ins_del_ok = 0; | |
5128 | } | |
5129 | ||
c4ea52a6 | 5130 | /* Reset the rubout key to backspace. */ |
86a5659e | 5131 | |
dfcf069d | 5132 | void |
86a5659e JB |
5133 | hft_reset () |
5134 | { | |
5135 | struct hfbuf buf; | |
5136 | struct hfkeymap keymap; | |
5137 | int junk; | |
5138 | ||
5139 | #ifdef IBMR2AIX | |
5140 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5141 | return; | |
5142 | #else /* not IBMR2AIX */ | |
5143 | if (ioctl (0, HFQEIO, 0) < 0) | |
5144 | return; | |
5145 | #endif /* not IBMR2AIX */ | |
5146 | ||
5147 | buf.hf_bufp = (char *)&keymap; | |
5148 | buf.hf_buflen = sizeof (keymap); | |
5149 | keymap.hf_nkeys = 2; | |
5150 | keymap.hfkey[0].hf_kpos = 15; | |
5151 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5152 | #ifdef IBMR2AIX | |
5153 | keymap.hfkey[0].hf_keyidh = '<'; | |
5154 | #else /* not IBMR2AIX */ | |
5155 | keymap.hfkey[0].hf_page = '<'; | |
5156 | #endif /* not IBMR2AIX */ | |
5157 | keymap.hfkey[0].hf_char = 8; | |
5158 | keymap.hfkey[1].hf_kpos = 15; | |
5159 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5160 | #ifdef IBMR2AIX | |
5161 | keymap.hfkey[1].hf_keyidh = '<'; | |
5162 | #else /* not IBMR2AIX */ | |
5163 | keymap.hfkey[1].hf_page = '<'; | |
5164 | #endif /* not IBMR2AIX */ | |
5165 | keymap.hfkey[1].hf_char = 8; | |
5166 | hftctl (0, HFSKBD, &buf); | |
5167 | } | |
5168 | ||
b97ab886 | 5169 | #endif /* AIXHFT */ |
c238be24 RS |
5170 | |
5171 | #ifdef USE_DL_STUBS | |
5172 | ||
5173 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5174 | X11 libraries may refer to these functions but (we hope) do not | |
5175 | actually call them. */ | |
5176 | ||
5177 | void * | |
5178 | dlopen () | |
5179 | { | |
5180 | return 0; | |
5181 | } | |
5182 | ||
5183 | void * | |
5184 | dlsym () | |
5185 | { | |
5186 | return 0; | |
5187 | } | |
5188 | ||
5189 | int | |
5190 | dlclose () | |
5191 | { | |
5192 | return -1; | |
5193 | } | |
5194 | ||
5195 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5196 | \f |
5197 | #ifndef BSTRING | |
5198 | ||
5199 | #ifndef bzero | |
5200 | ||
5201 | void | |
5202 | bzero (b, length) | |
5203 | register char *b; | |
5204 | register int length; | |
5205 | { | |
5206 | #ifdef VMS | |
5207 | short zero = 0; | |
5208 | long max_str = 65535; | |
5209 | ||
5210 | while (length > max_str) { | |
5211 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5212 | length -= max_str; | |
5213 | b += max_str; | |
5214 | } | |
5215 | max_str = length; | |
5216 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5217 | #else | |
5218 | while (length-- > 0) | |
5219 | *b++ = 0; | |
5220 | #endif /* not VMS */ | |
5221 | } | |
5222 | ||
5223 | #endif /* no bzero */ | |
5224 | #endif /* BSTRING */ | |
5225 | ||
c7f93f28 | 5226 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5227 | #undef bcopy |
5228 | ||
5229 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5230 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5231 | bcopy (b1, b2, length) | |
5232 | register char *b1; | |
5233 | register char *b2; | |
5234 | register int length; | |
5235 | { | |
5236 | #ifdef VMS | |
5237 | long max_str = 65535; | |
5238 | ||
5239 | while (length > max_str) { | |
5240 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5241 | length -= max_str; | |
5242 | b1 += max_str; | |
5243 | b2 += max_str; | |
5244 | } | |
5245 | max_str = length; | |
5246 | (void) LIB$MOVC3 (&length, b1, b2); | |
5247 | #else | |
5248 | while (length-- > 0) | |
5249 | *b2++ = *b1++; | |
5250 | #endif /* not VMS */ | |
5251 | } | |
dfcf069d | 5252 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ |
51417996 | 5253 | |
c7f93f28 | 5254 | #ifndef BSTRING |
51417996 RS |
5255 | #ifndef bcmp |
5256 | int | |
5257 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5258 | register char *b1; | |
5259 | register char *b2; | |
5260 | register int length; | |
5261 | { | |
5262 | #ifdef VMS | |
5263 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5264 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5265 | ||
5266 | return STR$COMPARE (&src1, &src2); | |
5267 | #else | |
5268 | while (length-- > 0) | |
5269 | if (*b1++ != *b2++) | |
5270 | return 1; | |
5271 | ||
5272 | return 0; | |
5273 | #endif /* not VMS */ | |
5274 | } | |
5275 | #endif /* no bcmp */ | |
5276 | #endif /* not BSTRING */ | |
68c45bf0 PE |
5277 | \f |
5278 | #ifndef HAVE_STRSIGNAL | |
5279 | char * | |
5280 | strsignal (code) | |
5281 | int code; | |
5282 | { | |
5283 | char *signame = 0; | |
5284 | ||
5285 | if (0 <= code && code < NSIG) | |
5286 | { | |
5287 | #ifdef VMS | |
5288 | signame = sys_errlist[code]; | |
5289 | #else | |
5290 | /* Cast to suppress warning if the table has const char *. */ | |
5291 | signame = (char *) sys_siglist[code]; | |
5292 | #endif | |
5293 | } | |
c4ea52a6 | 5294 | |
68c45bf0 PE |
5295 | return signame; |
5296 | } | |
5297 | #endif /* HAVE_STRSIGNAL */ | |
5298 | \f | |
c4ea52a6 RS |
5299 | /* All the Macintosh stuffs go here */ |
5300 | ||
5301 | #ifdef macintosh | |
5302 | ||
5303 | #include <Files.h> | |
5304 | #include <MacTypes.h> | |
5305 | #include <TextUtils.h> | |
5306 | #include <Folders.h> | |
5307 | ||
5308 | #include <dirent.h> | |
5309 | #include <sys/stat.h> | |
5310 | #include <string.h> | |
5311 | #include <pwd.h> | |
5312 | #include <sys/param.h> | |
5313 | ||
5314 | /* Convert a Mac pathname to Unix form. A Mac full pathname is one | |
5315 | that does not begin with a ':' and contains at least one ':'. A Mac | |
5316 | full pathname causes an '/' to be prepended to the Unix pathname. | |
5317 | The algorithm for the rest of the pathname is as follows: | |
5318 | For each segment between two ':', | |
5319 | if it is non-null, copy as is and then add a '/' at the end, | |
5320 | otherwise, insert a "../" into the Unix pathname. | |
5321 | Returns 1 if successful; 0 if fails. */ | |
5322 | ||
5323 | int | |
5324 | Mac2UnixPathname (const char *mfn, char *ufn, int ufnbuflen) | |
5325 | { | |
5326 | const char *p, *q, *pe; | |
5327 | ||
5328 | strcpy (ufn, ""); | |
5329 | ||
5330 | if (*mfn == '\0') | |
5331 | return 1; | |
5332 | ||
5333 | p = strchr (mfn, ':'); | |
5334 | if (p != 0 && p != mfn) /* full pathname */ | |
5335 | strcat (ufn, "/"); | |
5336 | ||
5337 | p = mfn; | |
5338 | if (*p == ':') | |
5339 | p++; | |
5340 | ||
5341 | pe = mfn + strlen (mfn); | |
5342 | while (p < pe) | |
5343 | { | |
5344 | q = strchr (p, ':'); | |
5345 | if (q) | |
5346 | { | |
5347 | if (q == p) | |
5348 | { /* two consecutive ':' */ | |
5349 | if (strlen (ufn) + 3 >= ufnbuflen) | |
5350 | return 0; | |
5351 | strcat (ufn, "../"); | |
5352 | } | |
5353 | else | |
5354 | { | |
5355 | if (strlen (ufn) + (q - p) + 1 >= ufnbuflen) | |
5356 | return 0; | |
5357 | strncat (ufn, p, q - p); | |
5358 | strcat (ufn, "/"); | |
5359 | } | |
5360 | p = q + 1; | |
5361 | } | |
5362 | else | |
5363 | { | |
5364 | if (strlen (ufn) + (pe - p) >= ufnbuflen) | |
5365 | return 0; | |
5366 | strncat (ufn, p, pe - p); /* no separator for last one */ | |
5367 | p = pe; | |
5368 | } | |
5369 | } | |
5370 | ||
5371 | return 1; | |
5372 | } | |
5373 | ||
5374 | extern char *GetTempDirName (); | |
5375 | ||
5376 | /* Convert a Unix pathname to Mac form. Approximately reverse of the | |
5377 | above in algorithm. */ | |
5378 | int | |
5379 | Unix2MacPathname (const char *ufn, char *mfn, int mfnbuflen) | |
5380 | { | |
5381 | const char *p, *q, *pe; | |
5382 | char expandedPathname[MAXPATHLEN+1]; | |
5383 | ||
5384 | strcpy (mfn, ""); | |
5385 | ||
5386 | if (*ufn == '\0') | |
5387 | return 1; | |
5388 | ||
5389 | p = ufn; | |
5390 | ||
5391 | /* Check for and handle volume names. Last comparison: strangely | |
5392 | somewhere `/.emacs' is passed. A temporary fix for now. */ | |
5393 | if (*p == '/' && strchr (p+1, '/') == NULL && strcmp (p, "/.emacs") != 0) | |
5394 | { | |
5395 | if (strlen (p) + 1 > mfnbuflen) | |
5396 | return 0; | |
5397 | strcpy (mfn, p+1); | |
5398 | strcat (mfn, ":"); | |
5399 | return 1; | |
5400 | } | |
5401 | ||
5402 | if (strncmp (p, "~emacs/", 7) == 0) | |
5403 | { /* expand to emacs dir found by InitEmacsPasswdDir */ | |
5404 | struct passwd *pw = getpwnam ("emacs"); | |
5405 | p += 7; | |
5406 | if (strlen (pw->pw_dir) + strlen (p) > MAXPATHLEN) | |
5407 | return 0; | |
5408 | strcpy (expandedPathname, pw->pw_dir); | |
5409 | strcat (expandedPathname, p); | |
5410 | p = expandedPathname; | |
5411 | /* Now p points to the pathname with emacs dir prefix. */ | |
5412 | } | |
5413 | else if (strncmp (p, "/tmp/", 5) == 0) | |
5414 | { | |
5415 | char *t = GetTempDirName (); | |
5416 | p += 5; | |
5417 | if (strlen (t) + strlen (p) > MAXPATHLEN) | |
5418 | return 0; | |
5419 | strcpy (expandedPathname, t); | |
5420 | strcat (expandedPathname, p); | |
5421 | p = expandedPathname; | |
5422 | /* Now p points to the pathname with emacs dir prefix. */ | |
5423 | } | |
5424 | else if (*p != '/') /* relative pathname */ | |
5425 | strcat (mfn, ":"); | |
5426 | ||
5427 | if (*p == '/') | |
5428 | p++; | |
5429 | ||
5430 | pe = p + strlen (p); | |
5431 | while (p < pe) | |
5432 | { | |
5433 | q = strchr (p, '/'); | |
5434 | if (q) | |
5435 | { | |
5436 | if (q - p == 2 && *p == '.' && *(p+1) == '.') | |
5437 | { | |
5438 | if (strlen (mfn) + 1 >= mfnbuflen) | |
5439 | return 0; | |
5440 | strcat (mfn, ":"); | |
5441 | } | |
5442 | else | |
5443 | { | |
5444 | if (strlen (mfn) + (q - p) + 1 >= mfnbuflen) | |
5445 | return 0; | |
5446 | strncat (mfn, p, q - p); | |
5447 | strcat (mfn, ":"); | |
5448 | } | |
5449 | p = q + 1; | |
5450 | } | |
5451 | else | |
5452 | { | |
5453 | if (strlen (mfn) + (pe - p) >= mfnbuflen) | |
5454 | return 0; | |
5455 | strncat (mfn, p, pe - p); | |
5456 | p = pe; | |
5457 | } | |
5458 | } | |
5459 | ||
5460 | return 1; | |
5461 | } | |
5462 | ||
5463 | /* The following functions with "sys_" prefix are stubs to Unix | |
5464 | functions that have already been implemented by CW or MPW. The | |
5465 | calls to them in Emacs source course are #define'd to call the sys_ | |
5466 | versions by the header files s-mac.h. In these stubs pathnames are | |
5467 | converted between their Unix and Mac forms. */ | |
5468 | /* Unix Epoch is Jan 1, 1970 while Mac Epoch is Jan 1, 1904: 66 years | |
5469 | + 17 leap days */ | |
5470 | #define MAC_UNIX_EPOCH_DIFF ((365L * 66 + 17) * 24 * 60 * 60) | |
5471 | ||
5472 | /* CW Epoch is Jan 1, 1900 (aaarghhhhh!); remember, 1900 is not a leap | |
5473 | year! */ | |
5474 | #define CW_UNIX_EPOCH_DIFF ((365L * 70 + 17) * 24 * 60 * 60) | |
5475 | ||
5476 | /* Define our own stat function for both MrC and CW. The reason for | |
5477 | doing this: "stat" is both the name of a struct and function name: | |
68c45bf0 | 5478 | we can't #define stat to something else to |
c4ea52a6 RS |
5479 | redirect Emacs's calls to our own version that converts Unix style |
5480 | filenames to Mac style filename because all sorts of compilation | |
68c45bf0 | 5481 | errors will be generated if stat is #define'd to be something else. */ |
c4ea52a6 RS |
5482 | |
5483 | int | |
5484 | stat (const char *path, struct stat *buf) | |
5485 | { | |
5486 | char MacPathname[MAXPATHLEN+1]; | |
5487 | CInfoPBRec cipb; | |
5488 | ||
5489 | if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0) | |
5490 | return -1; | |
5491 | ||
5492 | c2pstr (MacPathname); | |
5493 | cipb.hFileInfo.ioNamePtr = MacPathname; | |
5494 | cipb.hFileInfo.ioVRefNum = 0; | |
5495 | cipb.hFileInfo.ioDirID = 0; | |
5496 | cipb.hFileInfo.ioFDirIndex = 0; /* set to 0 to get information about specific dir or file */ | |
5497 | ||
5498 | errno = PBGetCatInfo (&cipb, false); | |
5499 | if (errno == -43) /* -43: fnfErr defined in Errors.h */ | |
5500 | errno = ENOENT; | |
5501 | if (errno != noErr) | |
5502 | return -1; | |
5503 | ||
5504 | if (cipb.hFileInfo.ioFlAttrib & 0x10) | |
5505 | { /* bit 4 = 1 for directories */ | |
5506 | buf->st_mode = S_IFDIR | S_IREAD | S_IEXEC; | |
5507 | if (!(cipb.hFileInfo.ioFlAttrib & 0x1)) /* bit 1 = 1 for locked files/directories */ | |
5508 | buf->st_mode |= S_IWRITE; | |
5509 | buf->st_ino = cipb.dirInfo.ioDrDirID; | |
5510 | buf->st_dev = cipb.dirInfo.ioVRefNum; | |
5511 | buf->st_size = cipb.dirInfo.ioDrNmFls; /* size of dir = number of files and dirs */ | |
5512 | buf->st_atime = buf->st_mtime = cipb.dirInfo.ioDrMdDat - MAC_UNIX_EPOCH_DIFF; | |
5513 | buf->st_ctime = cipb.dirInfo.ioDrCrDat - MAC_UNIX_EPOCH_DIFF; | |
5514 | } | |
5515 | else | |
5516 | { | |
5517 | buf->st_mode = S_IFREG | S_IREAD; | |
5518 | if (!(cipb.hFileInfo.ioFlAttrib & 0x1)) /* bit 1 = 1 for locked files/directories */ | |
5519 | buf->st_mode |= S_IWRITE; | |
5520 | if (cipb.hFileInfo.ioFlFndrInfo.fdType == 'APPL') | |
5521 | buf->st_mode |= S_IEXEC; | |
5522 | buf->st_ino = cipb.hFileInfo.ioDirID; | |
5523 | buf->st_dev = cipb.hFileInfo.ioVRefNum; | |
5524 | buf->st_size = cipb.hFileInfo.ioFlLgLen; | |
5525 | buf->st_atime = buf->st_mtime = cipb.hFileInfo.ioFlMdDat - MAC_UNIX_EPOCH_DIFF; | |
5526 | buf->st_ctime = cipb.hFileInfo.ioFlCrDat - MAC_UNIX_EPOCH_DIFF; | |
5527 | } | |
5528 | buf->st_nlink = 1; | |
5529 | buf->st_uid = getuid (); | |
5530 | buf->st_gid = getgid (); | |
5531 | buf->st_rdev = 0; | |
5532 | ||
5533 | return 0; | |
5534 | } | |
5535 | ||
5536 | #if __MRC__ | |
5537 | ||
5538 | /* CW defines fstat in stat.mac.c while MPW does not provide this | |
5539 | function. Without the information of how to get from a file | |
5540 | descriptor in MPW StdCLib to a Mac OS file spec, it should be hard | |
5541 | to implement this function. Fortunately, there is only one place | |
5542 | where this function is called in our configuration: in fileio.c, | |
5543 | where only the st_dev and st_ino fields are used to determine | |
5544 | whether two fildes point to different i-nodes to prevent copying | |
5545 | a file onto itself equal. What we have here probably needs | |
5546 | improvement. */ | |
5547 | int | |
5548 | fstat (int fildes, struct stat *buf) | |
5549 | { | |
5550 | buf->st_dev = 0; | |
5551 | buf->st_ino = fildes; | |
5552 | return 0; /* success */ | |
5553 | } | |
5554 | ||
5555 | #endif /* __MRC__ */ | |
5556 | ||
5557 | /* From Think Reference code example */ | |
5558 | int | |
5559 | mkdir (const char *dirname, int mode) | |
5560 | { | |
5561 | #pragma unused (mode) | |
5562 | ||
5563 | HFileParam hfpb; | |
5564 | char MacPathname[MAXPATHLEN+1]; | |
5565 | ||
5566 | if (Unix2MacPathname (dirname, MacPathname, MAXPATHLEN+1) == 0) | |
5567 | return -1; | |
5568 | ||
5569 | c2pstr (MacPathname); | |
5570 | hfpb.ioNamePtr = MacPathname; | |
5571 | hfpb.ioVRefNum = 0; /*ignored unless name is invalid */ | |
5572 | hfpb.ioDirID = 0; /*parent is the root */ | |
5573 | ||
5574 | /* Just return the Mac OSErr code for now. */ | |
5575 | errno = PBDirCreate ((HParmBlkPtr) &hfpb, false); | |
5576 | return errno == noErr ? 0 : -1; | |
5577 | } | |
5578 | ||
5579 | int | |
5580 | rmdir (const char *dirname) | |
5581 | { | |
5582 | HFileParam hfpb; | |
5583 | char MacPathname[MAXPATHLEN+1]; | |
5584 | ||
5585 | if (Unix2MacPathname (dirname, MacPathname, MAXPATHLEN+1) == 0) | |
5586 | return -1; | |
5587 | ||
5588 | c2pstr (MacPathname); | |
5589 | hfpb.ioNamePtr = MacPathname; | |
5590 | hfpb.ioVRefNum = 0; /*ignored unless name is invalid */ | |
5591 | hfpb.ioDirID = 0; /*parent is the root */ | |
5592 | ||
5593 | errno = PBHDelete ((HParmBlkPtr) &hfpb, false); | |
5594 | return errno == noErr ? 0 : -1; | |
5595 | } | |
5596 | ||
5597 | #ifdef __MRC__ | |
5598 | ||
5599 | /* No implementation yet. */ | |
5600 | int | |
5601 | execvp (const char *path, ...) | |
5602 | { | |
5603 | return -1; | |
5604 | } | |
5605 | ||
5606 | #endif /* __MRC__ */ | |
5607 | ||
5608 | int | |
5609 | utime (const char *path, const struct utimbuf *times) | |
5610 | { | |
5611 | char MacPathname[MAXPATHLEN+1]; | |
5612 | CInfoPBRec cipb; | |
5613 | ||
5614 | if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0) | |
5615 | return -1; | |
5616 | ||
5617 | c2pstr (MacPathname); | |
5618 | cipb.hFileInfo.ioNamePtr = MacPathname; | |
5619 | cipb.hFileInfo.ioVRefNum = 0; | |
5620 | cipb.hFileInfo.ioDirID = 0; | |
5621 | /* Set to 0 to get information about specific dir or file. */ | |
5622 | cipb.hFileInfo.ioFDirIndex = 0; | |
5623 | ||
5624 | errno = PBGetCatInfo (&cipb, false); | |
5625 | if (errno != noErr) | |
5626 | return -1; | |
5627 | ||
5628 | if (cipb.hFileInfo.ioFlAttrib & 0x10) | |
5629 | { /* bit 4 = 1 for directories */ | |
5630 | if (times) | |
5631 | cipb.dirInfo.ioDrMdDat = times->modtime + MAC_UNIX_EPOCH_DIFF; | |
5632 | else | |
5633 | GetDateTime (&cipb.dirInfo.ioDrMdDat); | |
5634 | } | |
5635 | else | |
5636 | { | |
5637 | if (times) | |
5638 | cipb.hFileInfo.ioFlMdDat = times->modtime + MAC_UNIX_EPOCH_DIFF; | |
5639 | else | |
5640 | GetDateTime (&cipb.hFileInfo.ioFlMdDat); | |
5641 | } | |
5642 | ||
5643 | errno = PBSetCatInfo (&cipb, false); | |
5644 | return errno == noErr ? 0 : -1; | |
5645 | } | |
5646 | ||
5647 | #define F_OK 0 | |
5648 | #define X_OK 1 | |
5649 | #define W_OK 2 | |
5650 | ||
5651 | /* Like stat, but test for access mode in hfpb.ioFlAttrib. */ | |
5652 | int | |
5653 | access (const char *path, int mode) | |
5654 | { | |
5655 | char MacPathname[MAXPATHLEN+1]; | |
5656 | CInfoPBRec cipb; | |
5657 | ||
5658 | if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0) | |
5659 | return -1; | |
5660 | ||
5661 | c2pstr (MacPathname); | |
5662 | cipb.hFileInfo.ioNamePtr = MacPathname; | |
5663 | cipb.hFileInfo.ioVRefNum = 0; | |
5664 | cipb.hFileInfo.ioDirID = 0; | |
5665 | cipb.hFileInfo.ioFDirIndex = 0; /* set to 0 to get information about specific dir or file */ | |
5666 | ||
5667 | errno = PBGetCatInfo (&cipb, false); | |
5668 | if (errno != noErr) | |
5669 | return -1; | |
5670 | ||
5671 | if (mode == F_OK) /* got this far, file exists */ | |
5672 | return 0; | |
5673 | ||
5674 | if (mode & X_OK) | |
5675 | if (cipb.hFileInfo.ioFlAttrib & 0x10) /* path refers to a directory */ | |
5676 | return 0; | |
5677 | else | |
5678 | { | |
5679 | if (cipb.hFileInfo.ioFlFndrInfo.fdType == 'APPL') | |
5680 | return 0; | |
5681 | else | |
5682 | return -1; | |
5683 | } | |
5684 | ||
5685 | if (mode & W_OK) | |
5686 | return (cipb.hFileInfo.ioFlAttrib & 0x1) ? -1 : 0; /* don't allow if lock bit on */ | |
5687 | ||
5688 | return -1; | |
5689 | } | |
5690 | ||
5691 | #define DEV_NULL_FD 0x10000 | |
5692 | ||
5693 | #undef open | |
5694 | int | |
5695 | sys_open (const char *path, int oflag) | |
5696 | { | |
5697 | char MacPathname[MAXPATHLEN+1]; | |
5698 | ||
5699 | if (strcmp (path, "/dev/null") == 0) | |
5700 | return DEV_NULL_FD; /* some bogus fd to be ignored in write */ | |
5701 | ||
5702 | if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0) | |
5703 | return -1; | |
5704 | else | |
5705 | return open (MacPathname, oflag); | |
5706 | } | |
5707 | ||
5708 | #undef creat | |
5709 | int | |
5710 | sys_creat (const char *path, mode_t mode) | |
5711 | { | |
5712 | char MacPathname[MAXPATHLEN+1]; | |
5713 | ||
5714 | if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0) | |
5715 | return -1; | |
5716 | else | |
5717 | return creat (MacPathname, mode); | |
5718 | } | |
5719 | ||
5720 | #undef unlink | |
5721 | int | |
5722 | sys_unlink (const char *path) | |
5723 | { | |
5724 | char MacPathname[MAXPATHLEN+1]; | |
5725 | ||
5726 | if (Unix2MacPathname (path, MacPathname, MAXPATHLEN+1) == 0) | |
5727 | return -1; | |
5728 | else | |
5729 | return unlink (MacPathname); | |
5730 | } | |
5731 | ||
5732 | #undef read | |
5733 | int | |
5734 | sys_read (int fildes, char *buf, int count) | |
5735 | { | |
5736 | if (fildes == 0) | |
5737 | { /* if stdin, call (non-echoing) "getch" in console.h */ | |
5738 | if (MacKeyPending ()) | |
5739 | { /* don't wait for a key if none has been pressed */ | |
5740 | *buf = MacGetChar (); | |
5741 | return 1; | |
5742 | } | |
5743 | else | |
5744 | return 0; | |
5745 | } | |
5746 | else | |
5747 | return read (fildes, buf, count); | |
5748 | } | |
5749 | ||
5750 | #undef write | |
5751 | int | |
5752 | sys_write (int fildes, char *buf, int count) | |
5753 | { | |
5754 | if (fildes == DEV_NULL_FD) | |
5755 | return count; | |
5756 | else | |
5757 | return write (fildes, buf, count); | |
5758 | } | |
5759 | ||
5760 | #undef rename | |
5761 | int | |
5762 | sys_rename (const char * old_name, const char * new_name) | |
5763 | { | |
5764 | char MacOldName[MAXPATHLEN+1], MacNewName[MAXPATHLEN+1]; | |
5765 | ||
5766 | if (strcmp (old_name, new_name) == 0) | |
5767 | return 0; | |
5768 | ||
5769 | if (Unix2MacPathname (old_name, MacOldName, MAXPATHLEN+1) == 0) | |
5770 | return 1; | |
5771 | ||
5772 | if (Unix2MacPathname (new_name, MacNewName, MAXPATHLEN+1) == 0) | |
5773 | return 1; | |
5774 | ||
5775 | return rename (MacOldName, MacNewName); | |
5776 | } | |
5777 | ||
5778 | #undef fopen | |
5779 | extern FILE *fopen (const char *name, const char *mode); | |
5780 | FILE | |
5781 | sys_fopen (const char *name, const char *mode) | |
5782 | { | |
5783 | char MacPathname[MAXPATHLEN+1]; | |
5784 | ||
5785 | if (Unix2MacPathname (name, MacPathname, MAXPATHLEN+1) == 0) | |
5786 | return 0; | |
5787 | else | |
5788 | return fopen (MacPathname, mode); | |
5789 | } | |
5790 | ||
5791 | #include <Events.h> | |
5792 | ||
5793 | long targetTicks = 0; | |
5794 | ||
5795 | #ifdef __MRC__ | |
5796 | __sigfun alarm_signal_func = (__sigfun) 0; | |
5797 | #elif __MWERKS__ | |
5798 | __signal_func_ptr alarm_signal_func = (__signal_func_ptr) 0; | |
5799 | #else | |
5800 | You lose!!! | |
5801 | #endif | |
5802 | ||
5803 | /* These functions simulate SIG_ALRM. The stub for function signal | |
5804 | stores the signal handler function in alarm_signal_func if a | |
5805 | SIG_ALRM is encountered. CheckAlarm is called in mac_read_socket, | |
5806 | which emacs calls periodically. A pending alarm is represented by | |
5807 | a non-zero targetTicks value. CheckAlarm calls the handler | |
5808 | function pointed to by alarm_signal_func if one has been set up and | |
5809 | an alarm is pending. */ | |
5810 | void | |
5811 | CheckAlarm () | |
5812 | { | |
5813 | if (targetTicks && TickCount () > targetTicks) | |
5814 | { | |
5815 | targetTicks = 0; | |
5816 | if (alarm_signal_func) | |
5817 | (*alarm_signal_func)(SIGALRM); | |
5818 | } | |
5819 | } | |
5820 | ||
5821 | /* Called in sys_select to wait for an alarm signal to arrive. */ | |
5822 | int | |
5823 | pause () | |
5824 | { | |
5825 | unsigned long finalTick; | |
5826 | ||
5827 | if (!targetTicks) /* no alarm pending */ | |
5828 | return -1; | |
5829 | ||
5830 | while (TickCount () <= targetTicks) | |
5831 | Delay (1UL, &finalTick); /* wait for 1/60 second before trying again */ | |
5832 | ||
5833 | targetTicks = 0; | |
5834 | if (alarm_signal_func) | |
5835 | (*alarm_signal_func)(SIGALRM); | |
5836 | ||
5837 | return 0; | |
5838 | } | |
5839 | ||
5840 | int | |
5841 | alarm (int seconds) | |
5842 | { | |
5843 | long remaining = targetTicks ? (TickCount () - targetTicks) / 60 : 0; | |
5844 | ||
5845 | targetTicks = seconds ? TickCount () + 60 * seconds : 0; | |
5846 | ||
5847 | return (remaining < 0) ? 0 : (unsigned int) remaining; | |
5848 | } | |
5849 | ||
5850 | #undef signal | |
5851 | #ifdef __MRC__ | |
5852 | extern __sigfun signal (int signal, __sigfun signal_func); | |
5853 | __sigfun | |
5854 | sys_signal (int signal_num, __sigfun signal_func) | |
5855 | #elif __MWERKS__ | |
5856 | extern __signal_func_ptr signal (int signal, __signal_func_ptr signal_func); | |
5857 | __signal_func_ptr | |
5858 | sys_signal (int signal_num, __signal_func_ptr signal_func) | |
5859 | #else | |
5860 | You lose!!! | |
5861 | #endif | |
5862 | { | |
5863 | if (signal_num != SIGALRM) | |
5864 | return signal (signal_num, signal_func); | |
5865 | else | |
5866 | { | |
5867 | #ifdef __MRC__ | |
5868 | __sigfun old_signal_func; | |
5869 | #elif __MWERKS__ | |
5870 | __signal_func_ptr old_signal_func; | |
5871 | #else | |
5872 | You lose!!! | |
5873 | #endif | |
5874 | old_signal_func = alarm_signal_func; | |
5875 | alarm_signal_func = signal_func; | |
5876 | return old_signal_func; | |
5877 | } | |
5878 | } | |
5879 | ||
5880 | /* The time functions adjust time values according to the difference | |
5881 | between the Unix and CW epoches. */ | |
5882 | ||
5883 | #undef gmtime | |
5884 | extern struct tm *gmtime (const time_t *); | |
5885 | struct tm | |
5886 | sys_gmtime (const time_t *timer) | |
5887 | { | |
5888 | time_t unixTime = *timer + CW_UNIX_EPOCH_DIFF; | |
5889 | ||
5890 | return gmtime (&unixTime); | |
5891 | } | |
5892 | ||
5893 | #undef localtime | |
5894 | extern struct tm *localtime (const time_t *); | |
5895 | struct tm * | |
5896 | sys_localtime (const time_t *timer) | |
5897 | { | |
5898 | time_t unixTime = *timer + CW_UNIX_EPOCH_DIFF; | |
5899 | ||
5900 | return localtime (&unixTime); | |
5901 | } | |
5902 | ||
5903 | #undef ctime | |
5904 | extern char *ctime (const time_t *); | |
5905 | char * | |
5906 | sys_ctime (const time_t *timer) | |
5907 | { | |
5908 | time_t unixTime = *timer + CW_UNIX_EPOCH_DIFF; | |
5909 | ||
5910 | return ctime (&unixTime); | |
5911 | } | |
5912 | ||
5913 | #undef time | |
5914 | extern time_t time (time_t *); | |
5915 | time_t | |
5916 | sys_time (time_t *timer) | |
5917 | { | |
5918 | time_t macTime = time (NULL) - CW_UNIX_EPOCH_DIFF; | |
5919 | ||
5920 | if (timer) | |
5921 | *timer = macTime; | |
5922 | ||
5923 | return macTime; | |
5924 | } | |
5925 | ||
5926 | /* no subprocesses, empty wait */ | |
5927 | int | |
5928 | wait (int pid) | |
5929 | { | |
5930 | return 0; | |
5931 | } | |
5932 | ||
5933 | void | |
5934 | croak (char *badfunc) | |
5935 | { | |
5936 | printf ("%s not yet implemented\r\n", badfunc); | |
5937 | exit (1); | |
5938 | } | |
5939 | ||
5940 | char * | |
5941 | index (const char * str, int chr) | |
5942 | { | |
5943 | return strchr (str, chr); | |
5944 | } | |
5945 | ||
5946 | char *e[] = { 0 }; | |
5947 | char **environ = &e[0]; | |
5948 | ||
5949 | char * | |
5950 | mktemp (char *template) | |
5951 | { | |
5952 | int len, k; | |
5953 | static seqnum = 0; | |
5954 | ||
5955 | len = strlen (template); | |
5956 | k = len - 1; | |
5957 | while (k >= 0 && template[k] == 'X') | |
5958 | k--; | |
5959 | ||
5960 | k++; /* make k index of first 'X' */ | |
5961 | ||
5962 | if (k < len) | |
5963 | { | |
5964 | /* Zero filled, number of digits equal to the number of X's. */ | |
5965 | sprintf (&template[k], "%0*d", len-k, seqnum++); | |
5966 | ||
5967 | return template; | |
5968 | } | |
5969 | else | |
5970 | return 0; | |
5971 | } | |
5972 | ||
5973 | /* Emulate getpwuid, getpwnam and others. */ | |
5974 | ||
5975 | #define PASSWD_FIELD_SIZE 256 | |
5976 | ||
5977 | static char myPasswdName[PASSWD_FIELD_SIZE]; | |
5978 | static char myPasswdDir[MAXPATHLEN+1]; | |
5979 | ||
5980 | static struct passwd myPasswd = | |
5981 | { | |
5982 | myPasswdName, | |
5983 | myPasswdDir, | |
5984 | }; | |
5985 | ||
5986 | /* Initialized by main () in macterm.c to pathname of emacs directory. */ | |
5987 | char emacsPasswdDir[MAXPATHLEN+1]; | |
5988 | ||
5989 | void | |
5990 | InitEmacsPasswdDir () | |
5991 | { | |
5992 | int found = false; | |
5993 | ||
5994 | if (getwd (emacsPasswdDir) && getwd (myPasswdDir)) | |
5995 | { | |
5996 | /* Need pathname of first ancestor that begins with `emacs' since | |
5997 | Mac emacs application is somewhere in the emacs-20.3 tree. */ | |
5998 | int len = strlen (emacsPasswdDir); | |
5999 | /* J points to the "/" following the directory name being compared. */ | |
6000 | int j = len - 1; | |
6001 | int i = j - 1; | |
6002 | while (i >= 0 && !found) | |
6003 | { | |
6004 | while (i >= 0 && emacsPasswdDir[i] != '/') | |
6005 | i--; | |
6006 | if (emacsPasswdDir[i] == '/' && i+5 < len) | |
6007 | found = (strncmp (&(emacsPasswdDir[i+1]), "emacs", 5) == 0); | |
6008 | if (found) | |
6009 | emacsPasswdDir[j+1] = '\0'; | |
6010 | else | |
6011 | { | |
6012 | j = i; | |
6013 | i = j - 1; | |
6014 | } | |
6015 | } | |
6016 | } | |
6017 | ||
6018 | if (!found) | |
6019 | { /* setting to "/" probably won't work, | |
6020 | but set it to something anyway. */ | |
6021 | strcpy (emacsPasswdDir, "/"); | |
6022 | strcpy (myPasswdDir, "/"); | |
6023 | } | |
6024 | } | |
6025 | ||
6026 | static struct passwd emacsPasswd = | |
6027 | { | |
6028 | "emacs", | |
6029 | emacsPasswdDir, | |
6030 | }; | |
6031 | ||
6032 | static int myPasswdInited = 0; | |
6033 | ||
6034 | static void | |
6035 | InitMyPasswd () | |
6036 | { | |
6037 | char **ownerName; | |
6038 | ||
6039 | /* Note: myPasswdDir initialized in InitEmacsPasswdDir to directory | |
6040 | where Emacs was started. */ | |
6041 | ||
6042 | ownerName = (char **) GetResource ('STR ',-16096); | |
6043 | if (ownerName) | |
6044 | { | |
6045 | HLock (ownerName); | |
6046 | BlockMove ((unsigned char *) *ownerName, | |
6047 | (unsigned char *) myPasswdName, *ownerName[0] + 1); | |
6048 | HUnlock (ownerName); | |
6049 | p2cstr ((unsigned char *) myPasswdName); | |
6050 | } | |
6051 | else | |
6052 | myPasswdName[0] = 0; | |
6053 | } | |
6054 | ||
6055 | struct passwd * | |
6056 | getpwuid (uid_t uid) | |
6057 | { | |
6058 | if (!myPasswdInited) | |
6059 | { | |
6060 | InitMyPasswd (); | |
6061 | myPasswdInited = 1; | |
6062 | } | |
6063 | ||
6064 | return &myPasswd; | |
6065 | } | |
6066 | ||
6067 | struct passwd * | |
6068 | getpwnam (const char *name) | |
6069 | { | |
6070 | if (strcmp (name, "emacs") == 0) | |
6071 | return &emacsPasswd; | |
6072 | ||
6073 | if (!myPasswdInited) | |
6074 | { | |
6075 | InitMyPasswd (); | |
6076 | myPasswdInited = 1; | |
6077 | } | |
6078 | ||
6079 | return &myPasswd; | |
6080 | } | |
6081 | ||
6082 | /* The functions fork, kill, sigsetmask, sigblock, request_sigio, | |
6083 | setpgrp, setpriority, and unrequest_sigio are defined to be empty | |
6084 | as in msdos.c. */ | |
6085 | ||
6086 | int | |
6087 | fork () | |
6088 | { | |
6089 | return -1; | |
6090 | } | |
6091 | ||
6092 | int | |
6093 | kill (int x, int y) | |
6094 | { | |
6095 | return -1; | |
6096 | } | |
6097 | ||
6098 | int | |
6099 | sigsetmask (int x) | |
6100 | { | |
6101 | return 0; | |
6102 | } | |
6103 | ||
6104 | int | |
6105 | sigblock (int mask) | |
6106 | { | |
6107 | return 0; | |
6108 | } | |
6109 | ||
6110 | void | |
6111 | request_sigio (void) | |
6112 | { | |
6113 | } | |
6114 | ||
6115 | int | |
6116 | setpgrp () | |
6117 | { | |
6118 | return 0; | |
6119 | } | |
6120 | ||
6121 | void | |
6122 | unrequest_sigio (void) | |
6123 | { | |
6124 | } | |
6125 | ||
6126 | /* djgpp does not implement pipe either. */ | |
6127 | int | |
6128 | pipe (int _fildes[2]) | |
6129 | { | |
6130 | errno = EACCES; | |
6131 | return -1; | |
6132 | } | |
6133 | ||
6134 | /* Hard and symbolic links. */ | |
6135 | int | |
6136 | symlink (const char *name1, const char *name2) | |
6137 | { | |
6138 | errno = ENOENT; | |
6139 | return -1; | |
6140 | } | |
6141 | ||
6142 | int | |
6143 | link (const char *name1, const char *name2) | |
6144 | { | |
6145 | errno = ENOENT; | |
6146 | return -1; | |
6147 | } | |
6148 | ||
6149 | int | |
6150 | lstat (const char *path, struct stat *sb) | |
6151 | { | |
6152 | return stat (path, sb); | |
6153 | } | |
6154 | ||
6155 | int | |
6156 | readlink (const char *path, char *buf, int bufsiz) | |
6157 | { | |
6158 | errno = ENOENT; | |
6159 | return -1; | |
6160 | } | |
6161 | ||
6162 | mode_t | |
6163 | umask (mode_t numask) | |
6164 | { | |
6165 | static mode_t mask = 022; | |
6166 | mode_t oldmask = mask; | |
6167 | mask = numask; | |
6168 | return oldmask; | |
6169 | } | |
6170 | ||
6171 | int | |
6172 | chmod (const char *path, mode_t mode) | |
6173 | { | |
6174 | /* say it always succeed for now */ | |
6175 | return 0; | |
6176 | } | |
6177 | ||
6178 | int | |
6179 | dup (int oldd) | |
6180 | { | |
6181 | #ifdef __MRC__ | |
6182 | return fcntl (oldd, F_DUPFD, 0); | |
6183 | #elif __MWERKS__ | |
6184 | /* current implementation of fcntl in fcntl.mac.c simply returns old | |
6185 | descriptor */ | |
6186 | return fcntl (oldd, F_DUPFD); | |
6187 | #else | |
6188 | You lose!!! | |
6189 | #endif | |
6190 | } | |
6191 | ||
6192 | /* This is from the original sysdep.c. Emulate BSD dup2. First close | |
6193 | newd if it already exists. Then, attempt to dup oldd. If not | |
6194 | successful, call dup2 recursively until we are, then close the | |
6195 | unsuccessful ones. */ | |
6196 | int | |
6197 | dup2 (int oldd, int newd) | |
6198 | { | |
6199 | int fd, ret; | |
6200 | ||
6201 | close (newd); | |
6202 | ||
6203 | fd = dup (oldd); | |
6204 | if (fd == -1) | |
6205 | return -1; | |
6206 | if (fd == newd) | |
6207 | return newd; | |
6208 | ret = dup2 (oldd, newd); | |
6209 | close (fd); | |
6210 | return ret; | |
6211 | } | |
6212 | ||
6213 | /* let it fail for now */ | |
6214 | char * | |
6215 | sbrk (int incr) | |
6216 | { | |
6217 | return (char *) -1; | |
6218 | } | |
6219 | ||
6220 | int | |
6221 | fsync (int fd) | |
6222 | { | |
6223 | return 0; | |
6224 | } | |
6225 | ||
6226 | int | |
6227 | ioctl (int d, int request, void *argp) | |
6228 | { | |
6229 | return -1; | |
6230 | } | |
6231 | ||
6232 | #ifdef __MRC__ | |
6233 | int | |
6234 | isatty (int fildes) | |
6235 | { | |
6236 | if (fildes >=0 && fildes <= 2) | |
6237 | return 1; | |
6238 | else | |
6239 | return 0; | |
6240 | } | |
6241 | ||
6242 | int | |
6243 | getgid () | |
6244 | { | |
6245 | return 100; | |
6246 | } | |
6247 | ||
6248 | int | |
6249 | getegid () | |
6250 | { | |
6251 | return 100; | |
6252 | } | |
6253 | ||
6254 | int | |
6255 | getuid () | |
6256 | { | |
6257 | return 200; | |
6258 | } | |
6259 | ||
6260 | int | |
6261 | geteuid () | |
6262 | { | |
6263 | return 200; | |
6264 | } | |
6265 | ||
6266 | unsigned int | |
6267 | sleep (unsigned int seconds) | |
6268 | { | |
6269 | unsigned long finalTick; | |
6270 | ||
6271 | Delay (seconds * 60UL, &finalTick); | |
6272 | return (0); | |
6273 | } | |
6274 | #endif /* __MRC__ */ | |
6275 | ||
6276 | #ifdef __MWERKS__ | |
6277 | #undef getpid | |
6278 | int | |
6279 | getpid () | |
6280 | { | |
6281 | return 9999; | |
6282 | } | |
6283 | #endif /* __MWERKS__ */ | |
6284 | ||
6285 | /* Return the path to the directory in which Emacs can create | |
6286 | temporary files. The MacOS "temporary items" directory cannot be | |
6287 | used because it removes the file written by a process when it | |
6288 | exits. In that sense it's more like "/dev/null" than "/tmp" (but | |
6289 | again not exactly). And of course Emacs needs to read back the | |
6290 | files written by its subprocesses. So here we write the files to a | |
6291 | directory "Emacs" in the Preferences Folder. This directory is | |
6292 | created if it does not exist. */ | |
6293 | static char * | |
6294 | GetTempDirName () | |
6295 | { | |
6296 | static char *TempDirName = NULL; | |
6297 | short vRefNum; | |
6298 | long dirID; | |
6299 | OSErr err; | |
6300 | Str255 dirName, fullPath; | |
6301 | CInfoPBRec cpb; | |
6302 | char unixDirName[MAXPATHLEN+1]; | |
6303 | DIR *dir; | |
6304 | ||
6305 | /* Cache directory name with pointer TempDirName. | |
6306 | Look for it only the first time. */ | |
6307 | if (!TempDirName) | |
6308 | { | |
6309 | err = FindFolder (kOnSystemDisk, kPreferencesFolderType, | |
6310 | kCreateFolder, &vRefNum, &dirID); | |
6311 | if (err != noErr) | |
6312 | return NULL; | |
6313 | ||
6314 | *fullPath = '\0'; | |
6315 | cpb.dirInfo.ioNamePtr = dirName; | |
6316 | cpb.dirInfo.ioDrParID = dirID; | |
6317 | ||
6318 | /* Standard ref num to full path name loop */ | |
6319 | do { | |
6320 | cpb.dirInfo.ioVRefNum = vRefNum; | |
6321 | cpb.dirInfo.ioFDirIndex = -1; | |
6322 | cpb.dirInfo.ioDrDirID = cpb.dirInfo.ioDrParID; | |
6323 | ||
6324 | err = PBGetCatInfo (&cpb, false); | |
6325 | ||
6326 | p2cstr (dirName); | |
6327 | strcat (dirName, ":"); | |
6328 | if (strlen (fullPath) + strlen (dirName) <= MAXPATHLEN) | |
6329 | { | |
6330 | strcat (dirName, fullPath); | |
6331 | strcpy (fullPath, dirName); | |
6332 | } | |
6333 | else | |
6334 | return NULL; | |
6335 | } | |
6336 | while (cpb.dirInfo.ioDrDirID != fsRtDirID && err == noErr); | |
6337 | ||
6338 | if (strlen (fullPath) + 6 <= MAXPATHLEN) | |
6339 | strcat (fullPath, "Emacs:"); | |
6340 | else | |
6341 | return NULL; | |
6342 | ||
6343 | if (Mac2UnixPathname (fullPath, unixDirName, MAXPATHLEN+1) == 0) | |
6344 | return NULL; | |
6345 | ||
6346 | dir = opendir (unixDirName); /* check whether temp directory exists */ | |
6347 | if (dir) | |
6348 | closedir (dir); | |
6349 | else if (mkdir (unixDirName, 0700) != 0) /* create it if not */ | |
6350 | return NULL; | |
6351 | ||
6352 | TempDirName = (char *) malloc (strlen (unixDirName) + 1); | |
6353 | strcpy (TempDirName, unixDirName); | |
6354 | } | |
6355 | ||
6356 | return TempDirName; | |
6357 | } | |
6358 | ||
6359 | char * | |
6360 | getenv (const char * name) | |
6361 | { | |
6362 | if (strcmp (name, "TERM") == 0) | |
6363 | return "vt100"; | |
6364 | else if (strcmp (name, "TERMCAP") == 0) | |
6365 | /* for debugging purpose when code was still outputting to dumb terminal */ | |
6366 | return "d0|vt100|vt100-am|vt100am|dec vt100:do=[do]:co#100:li#32:cl=[cl]:sf=[sf]:km:\ | |
6367 | :le=[le]:bs:am:cm=[cm-%d,%d]:nd=[nd]:up=[up]:ce=[ce]:cd=[cd]:so=[so]:se=[se]:\ | |
6368 | :us=[us]:ue=[ue]:md=[md]:mr=[mr]:mb=[mb]:me=[me]:is=[is]:\ | |
6369 | :rf=/usr/share/lib/tabset/vt100:rs=[rs]:ks=[ks]:ke=[ke]:\ | |
6370 | :ku=\\036:kd=\\037:kr=\\035:kl=\\034:kb=[kb]:ho=[ho]:k1=[k1]:k2=[k2]:k3=[k3]:k4=[k4]:\ | |
6371 | :pt:sr=[sr]:vt#3:xn:sc=[sc]:rc=[rc]:cs=[cs-%d,%d]"; | |
6372 | else if (strcmp (name, "TMPDIR") == 0) | |
6373 | return GetTempDirName (); | |
6374 | else | |
6375 | return (NULL); | |
6376 | } | |
6377 | ||
c4ea52a6 RS |
6378 | #ifdef __MRC__ |
6379 | #include <utsname.h> | |
6380 | ||
6381 | int | |
6382 | uname (struct utsname *name) | |
6383 | { | |
6384 | char **systemName; | |
6385 | systemName = GetString (-16413); /* IM - Resource Manager Reference */ | |
6386 | if (systemName) | |
6387 | { | |
6388 | BlockMove (*systemName, name->nodename, (*systemName)[0]+1); | |
6389 | p2cstr (name->nodename); | |
6390 | } | |
6391 | else | |
6392 | return -1; | |
6393 | } | |
6394 | #endif | |
6395 | ||
6396 | #include <Processes.h> | |
6397 | #include <EPPC.h> | |
6398 | ||
6399 | /* Event class of HLE sent to subprocess. */ | |
6400 | const OSType kEmacsSubprocessSend = 'ESND'; | |
6401 | /* Event class of HLE sent back from subprocess. */ | |
6402 | const OSType kEmacsSubprocessReply = 'ERPY'; | |
6403 | ||
6404 | char * | |
6405 | mystrchr (char *s, char c) | |
6406 | { | |
6407 | while (*s && *s != c) | |
6408 | { | |
6409 | if (*s == '\\') | |
6410 | s++; | |
6411 | s++; | |
6412 | } | |
6413 | ||
6414 | if (*s) | |
6415 | { | |
6416 | *s = '\0'; | |
6417 | return s; | |
6418 | } | |
6419 | else | |
6420 | return NULL; | |
6421 | } | |
6422 | ||
6423 | char * | |
6424 | mystrtok (char *s) | |
6425 | { | |
6426 | while (*s) | |
6427 | s++; | |
6428 | ||
6429 | return s + 1; | |
6430 | } | |
6431 | ||
6432 | void | |
6433 | mystrcpy (char *to, char *from) | |
6434 | { | |
6435 | while (*from) | |
6436 | { | |
6437 | if (*from == '\\') | |
6438 | from++; | |
6439 | *to++ = *from++; | |
6440 | } | |
6441 | *to = '\0'; | |
6442 | } | |
6443 | ||
6444 | /* Start a Mac subprocess. Arguments for it is passed in argv (null | |
6445 | terminated). The process should run with the default directory | |
6446 | "workdir", read input from "infn", and write output and error to | |
6447 | "outfn" and "errfn", resp. The Process Manager call | |
6448 | LaunchApplication is used to start the subprocess. We use high | |
6449 | level events as the mechanism to pass arguments to the subprocess | |
6450 | and to make Emacs wait for the subprocess to terminate and pass | |
6451 | back a result code. The bulk of the code here packs the arguments | |
6452 | into one message to be passed together with the high level event. | |
6453 | Emacs also sometimes starts a subprocess using a shell to perform | |
6454 | wildcard filename expansion. Since we don't really have a shell on | |
6455 | the Mac, this case is detected and the starting of the shell is | |
6456 | by-passed. We really need to add code here to do filename | |
6457 | expansion to support such functionality. */ | |
6458 | int | |
6459 | run_mac_command (argv, workdir, infn, outfn, errfn) | |
6460 | unsigned char **argv; | |
6461 | const char *workdir; | |
6462 | const char *infn, *outfn, errfn; | |
6463 | { | |
6464 | char macappname[MAXPATHLEN+1], macworkdir[MAXPATHLEN+1]; | |
6465 | char macinfn[MAXPATHLEN+1], macoutfn[MAXPATHLEN+1], macerrfn[MAXPATHLEN+1]; | |
6466 | int paramlen, argc, newargc, j, retries; | |
6467 | char **newargv, *param, *p; | |
6468 | OSErr iErr; | |
6469 | FSSpec spec; | |
6470 | LaunchParamBlockRec lpbr; | |
6471 | EventRecord sendEvent, replyEvent; | |
6472 | RgnHandle cursorRegionHdl; | |
6473 | TargetID targ; | |
6474 | unsigned long refCon, len; | |
6475 | ||
6476 | if (Unix2MacPathname (workdir, macworkdir, MAXPATHLEN+1) == 0) | |
6477 | return -1; | |
6478 | if (Unix2MacPathname (infn, macinfn, MAXPATHLEN+1) == 0) | |
6479 | return -1; | |
6480 | if (Unix2MacPathname (outfn, macoutfn, MAXPATHLEN+1) == 0) | |
6481 | return -1; | |
6482 | if (Unix2MacPathname (errfn, macerrfn, MAXPATHLEN+1) == 0) | |
6483 | return -1; | |
6484 | ||
6485 | paramlen = strlen (macworkdir) + strlen (macinfn) + strlen (macoutfn) + strlen (macerrfn) + 4; | |
6486 | /* count nulls at end of strings */ | |
6487 | ||
6488 | argc = 0; | |
6489 | while (argv[argc]) | |
6490 | argc++; | |
6491 | ||
6492 | if (argc == 0) | |
6493 | return -1; | |
6494 | ||
6495 | /* If a subprocess is invoked with a shell, we receive 3 arguments of the form: | |
6496 | "<path to emacs bins>/sh" "-c" "<path to emacs bins>/<command> <command args>" */ | |
6497 | j = strlen (argv[0]); | |
6498 | if (j >= 3 && strcmp (argv[0]+j-3, "/sh") == 0 && argc == 3 && strcmp (argv[1], "-c") == 0) | |
6499 | { | |
6500 | char *command, *t, tempmacpathname[MAXPATHLEN+1]; | |
6501 | ||
6502 | /* The arguments for the command in argv[2] are separated by spaces. Count them and put | |
6503 | the count in newargc. */ | |
6504 | command = (char *) alloca (strlen (argv[2])+2); | |
6505 | strcpy (command, argv[2]); | |
6506 | if (command[strlen (command) - 1] != ' ') | |
6507 | strcat (command, " "); | |
6508 | ||
6509 | t = command; | |
6510 | newargc = 0; | |
6511 | t = mystrchr (t, ' '); | |
6512 | while (t) | |
6513 | { | |
6514 | newargc++; | |
6515 | t = mystrchr (t+1, ' '); | |
6516 | } | |
6517 | ||
6518 | newargv = (char **) alloca (sizeof (char *) * newargc); | |
6519 | ||
6520 | t = command; | |
6521 | for (j = 0; j < newargc; j++) | |
6522 | { | |
6523 | newargv[j] = (char *) alloca (strlen (t) + 1); | |
6524 | mystrcpy (newargv[j], t); | |
6525 | ||
6526 | t = mystrtok (t); | |
6527 | paramlen += strlen (newargv[j]) + 1; | |
6528 | } | |
6529 | ||
6530 | if (strncmp (newargv[0], "~emacs/", 7) == 0) | |
6531 | { | |
6532 | if (Unix2MacPathname (newargv[0], tempmacpathname, MAXPATHLEN+1) == 0) | |
6533 | return -1; | |
6534 | } | |
6535 | else | |
6536 | { /* sometimes Emacs call "sh" without a path for the command */ | |
6537 | #if 0 | |
6538 | char *t = (char *) alloca (strlen (newargv[0]) + 7 + 1); | |
6539 | strcpy (t, "~emacs/"); | |
6540 | strcat (t, newargv[0]); | |
6541 | #endif | |
6542 | Lisp_Object path; | |
6543 | openp (Vexec_path, build_string (newargv[0]), EXEC_SUFFIXES, &path, 1); | |
6544 | ||
6545 | if (NILP (path)) | |
6546 | return -1; | |
6547 | if (Unix2MacPathname (XSTRING (path)->data, tempmacpathname, MAXPATHLEN+1) == 0) | |
6548 | return -1; | |
6549 | } | |
6550 | strcpy (macappname, tempmacpathname); | |
6551 | } | |
6552 | else | |
6553 | { | |
6554 | if (Unix2MacPathname (argv[0], macappname, MAXPATHLEN+1) == 0) | |
6555 | return -1; | |
6556 | ||
6557 | newargv = (char **) alloca (sizeof (char *) * argc); | |
6558 | newargc = argc; | |
6559 | for (j = 1; j < argc; j++) | |
6560 | { | |
6561 | if (strncmp (argv[j], "~emacs/", 7) == 0) | |
6562 | { | |
6563 | char *t = strchr (argv[j], ' '); | |
6564 | if (t) | |
6565 | { | |
6566 | char tempcmdname[MAXPATHLEN+1], tempmaccmdname[MAXPATHLEN+1]; | |
6567 | strncpy (tempcmdname, argv[j], t-argv[j]); | |
6568 | tempcmdname[t-argv[j]] = '\0'; | |
6569 | if (Unix2MacPathname (tempcmdname, tempmaccmdname, MAXPATHLEN+1) == 0) | |
6570 | return -1; | |
6571 | newargv[j] = (char *) alloca (strlen (tempmaccmdname) + strlen (t) + 1); | |
6572 | strcpy (newargv[j], tempmaccmdname); | |
6573 | strcat (newargv[j], t); | |
6574 | } | |
6575 | else | |
6576 | { | |
6577 | char tempmaccmdname[MAXPATHLEN+1]; | |
6578 | if (Unix2MacPathname (argv[j], tempmaccmdname, MAXPATHLEN+1) == 0) | |
6579 | return -1; | |
6580 | newargv[j] = (char *) alloca (strlen (tempmaccmdname)+1); | |
6581 | strcpy (newargv[j], tempmaccmdname); | |
6582 | } | |
6583 | } | |
6584 | else | |
6585 | newargv[j] = argv[j]; | |
6586 | paramlen += strlen (newargv[j]) + 1; | |
6587 | } | |
6588 | } | |
6589 | ||
6590 | /* After expanding all the arguments, we now know the length of the parameter block to be | |
6591 | sent to the subprocess as a message attached to the HLE. */ | |
6592 | param = (char *) malloc (paramlen + 1); | |
6593 | if (!param) | |
6594 | return -1; | |
6595 | ||
6596 | p = param; | |
6597 | *p++ = newargc; /* first byte of message contains number of arguments for command */ | |
6598 | strcpy (p, macworkdir); | |
6599 | p += strlen (macworkdir); | |
6600 | *p++ = '\0'; /* null terminate strings sent so it's possible to use strcpy over there */ | |
6601 | strcpy (p, macinfn); | |
6602 | p += strlen (macinfn); | |
6603 | *p++ = '\0'; | |
6604 | strcpy (p, macoutfn); | |
6605 | p += strlen (macoutfn); | |
6606 | *p++ = '\0'; | |
6607 | strcpy (p, macerrfn); | |
6608 | p += strlen (macerrfn); | |
6609 | *p++ = '\0'; | |
6610 | for (j = 1; j < newargc; j++) { | |
6611 | strcpy (p, newargv[j]); | |
6612 | p += strlen (newargv[j]); | |
6613 | *p++ = '\0'; | |
6614 | } | |
6615 | ||
6616 | c2pstr (macappname); | |
6617 | ||
6618 | iErr = FSMakeFSSpec (0, 0, macappname, &spec); | |
6619 | ||
6620 | if (iErr != noErr) { | |
6621 | free (param); | |
6622 | return -1; | |
6623 | } | |
6624 | ||
6625 | lpbr.launchBlockID = extendedBlock; | |
6626 | lpbr.launchEPBLength = extendedBlockLen; | |
6627 | lpbr.launchControlFlags = launchContinue + launchNoFileFlags; | |
6628 | lpbr.launchAppSpec = &spec; | |
6629 | lpbr.launchAppParameters = NULL; | |
6630 | ||
6631 | iErr = LaunchApplication (&lpbr); /* call the subprocess */ | |
6632 | if (iErr != noErr) { | |
6633 | free (param); | |
6634 | return -1; | |
6635 | } | |
6636 | ||
6637 | sendEvent.what = kHighLevelEvent; | |
6638 | sendEvent.message = kEmacsSubprocessSend; /* Event ID stored in "where" unused */ | |
6639 | ||
6640 | retries = 3; | |
6641 | do { /* OS may think current subprocess has terminated if previous one terminated recently */ | |
6642 | iErr = PostHighLevelEvent (&sendEvent, &lpbr.launchProcessSN, 0, param, paramlen + 1, receiverIDisPSN); | |
6643 | } | |
6644 | while (iErr == sessClosedErr && retries-- > 0); | |
6645 | ||
6646 | if (iErr != noErr) { | |
6647 | free (param); | |
6648 | return -1; | |
6649 | } | |
6650 | ||
6651 | cursorRegionHdl = NewRgn (); | |
6652 | ||
6653 | /* Wait for the subprocess to finish, when it will send us a ERPY high level event */ | |
6654 | while (1) | |
6655 | if (WaitNextEvent (highLevelEventMask, &replyEvent, 180, cursorRegionHdl) && replyEvent.message == kEmacsSubprocessReply) | |
6656 | break; | |
6657 | ||
6658 | /* The return code is sent through the refCon */ | |
6659 | iErr = AcceptHighLevelEvent (&targ, &refCon, NULL, &len); | |
6660 | if (iErr != noErr) { | |
6661 | DisposeHandle ((Handle) cursorRegionHdl); | |
6662 | free (param); | |
6663 | return -1; | |
6664 | } | |
6665 | ||
6666 | DisposeHandle ((Handle) cursorRegionHdl); | |
6667 | free (param); | |
6668 | ||
6669 | return refCon; | |
6670 | } | |
6671 | ||
6672 | DIR * | |
6673 | opendir (const char *dirname) | |
6674 | { | |
6675 | char MacPathname[MAXPATHLEN+1]; | |
6676 | DIR *dirp; | |
6677 | CInfoPBRec cipb; | |
6678 | int len; | |
6679 | ||
6680 | dirp = (DIR *) malloc (sizeof (DIR)); | |
6681 | if (!dirp) | |
6682 | return 0; | |
6683 | ||
6684 | /* Handle special case when dirname is "/": sets up for readir to | |
6685 | get all mount volumes. */ | |
6686 | if (strcmp (dirname, "/") == 0) { | |
6687 | dirp->getting_volumes = 1; /* special all mounted volumes DIR struct */ | |
6688 | dirp->current_index = 1; /* index for first volume */ | |
6689 | return dirp; | |
6690 | } | |
6691 | ||
6692 | /* Handle typical cases: not accessing all mounted volumes. */ | |
6693 | if (Unix2MacPathname (dirname, MacPathname, MAXPATHLEN+1) == 0) | |
6694 | return 0; | |
6695 | ||
6696 | /* Emacs calls opendir without the trailing '/', Mac needs trailing ':' */ | |
6697 | len = strlen (MacPathname); | |
6698 | if (MacPathname[len - 1] != ':' && len < MAXPATHLEN) | |
6699 | strcat (MacPathname, ":"); | |
6700 | ||
6701 | c2pstr (MacPathname); | |
6702 | cipb.hFileInfo.ioNamePtr = MacPathname; /* using full pathname so vRefNum and dirID ignored */ | |
6703 | cipb.hFileInfo.ioVRefNum = 0; | |
6704 | cipb.hFileInfo.ioDirID = 0; | |
6705 | cipb.hFileInfo.ioFDirIndex = 0; /* set to 0 to get information about specific dir or file */ | |
6706 | ||
6707 | errno = PBGetCatInfo (&cipb, false); | |
6708 | if (errno != noErr) { | |
6709 | errno = ENOENT; | |
6710 | return 0; | |
6711 | } | |
6712 | ||
6713 | if (!(cipb.hFileInfo.ioFlAttrib & 0x10)) /* bit 4 = 1 for directories */ | |
6714 | return 0; /* not a directory */ | |
6715 | ||
6716 | dirp->dir_id = cipb.dirInfo.ioDrDirID; /* used later in readdir */ | |
6717 | dirp->getting_volumes = 0; | |
6718 | dirp->current_index = 1; /* index for first file/directory */ | |
6719 | ||
6720 | return dirp; | |
6721 | } | |
6722 | ||
6723 | int | |
6724 | closedir (DIR *dp) | |
6725 | { | |
6726 | free (dp); | |
6727 | ||
6728 | return 0; | |
6729 | } | |
6730 | ||
6731 | struct dirent * | |
6732 | readdir (DIR *dp) | |
6733 | { | |
6734 | HParamBlockRec HPBlock; | |
6735 | CInfoPBRec cipb; | |
6736 | static struct dirent s_dirent; | |
6737 | static Str255 s_name; | |
6738 | int done; | |
6739 | ||
6740 | /* Handle the root directory containing the mounted volumes. Call | |
6741 | PBHGetVInfo specifying an index to obtain the info for a volume. | |
6742 | PBHGetVInfo returns an error when it receives an index beyond the | |
6743 | last volume, at which time we should return a nil dirent struct | |
6744 | pointer. */ | |
6745 | if (dp->getting_volumes) { | |
6746 | HPBlock.volumeParam.ioNamePtr = s_name; | |
6747 | HPBlock.volumeParam.ioVRefNum = 0; | |
6748 | HPBlock.volumeParam.ioVolIndex = dp->current_index; | |
6749 | ||
6750 | errno = PBHGetVInfo (&HPBlock, false); | |
6751 | if (errno != noErr) { | |
6752 | errno = ENOENT; | |
6753 | return 0; | |
6754 | } | |
6755 | ||
6756 | p2cstr (s_name); | |
6757 | strcat (s_name, "/"); /* need "/" for stat to work correctly */ | |
6758 | ||
6759 | dp->current_index++; | |
6760 | ||
6761 | s_dirent.d_ino = cipb.dirInfo.ioDrDirID; | |
6762 | s_dirent.d_name = s_name; | |
6763 | ||
6764 | return &s_dirent; | |
6765 | } | |
6766 | else { | |
6767 | cipb.hFileInfo.ioVRefNum = 0; | |
6768 | cipb.hFileInfo.ioNamePtr = s_name; /* location to receive filename returned */ | |
6769 | ||
6770 | /* return only visible files */ | |
6771 | done = false; | |
6772 | while (!done) { | |
6773 | cipb.hFileInfo.ioDirID = dp->dir_id; /* directory ID found by opendir */ | |
6774 | cipb.hFileInfo.ioFDirIndex = dp->current_index; | |
6775 | ||
6776 | errno = PBGetCatInfo (&cipb, false); | |
6777 | if (errno != noErr) { | |
6778 | errno = ENOENT; | |
6779 | return 0; | |
6780 | } | |
6781 | ||
6782 | /* insist on an visibile entry */ | |
6783 | if (cipb.hFileInfo.ioFlAttrib & 0x10) /* directory? */ | |
6784 | done = !(cipb.dirInfo.ioDrUsrWds.frFlags & fInvisible); | |
6785 | else | |
6786 | done = !(cipb.hFileInfo.ioFlFndrInfo.fdFlags & fInvisible); | |
6787 | ||
6788 | dp->current_index++; | |
6789 | } | |
6790 | ||
6791 | p2cstr (s_name); | |
6792 | ||
6793 | s_dirent.d_ino = cipb.dirInfo.ioDrDirID; /* value unimportant: non-zero for valid file */ | |
6794 | s_dirent.d_name = s_name; | |
6795 | ||
6796 | return &s_dirent; | |
6797 | } | |
6798 | } | |
6799 | ||
6800 | char * | |
6801 | getwd (char *path) | |
6802 | { | |
6803 | char MacPathname[MAXPATHLEN+1]; | |
6804 | Str255 directoryName; | |
6805 | OSErr errno; | |
6806 | CInfoPBRec cipb; | |
6807 | ||
6808 | MacPathname[0] = '\0'; | |
6809 | directoryName[0] = '\0'; | |
6810 | cipb.dirInfo.ioDrParID = 0; | |
6811 | cipb.dirInfo.ioNamePtr = directoryName; /* empty string = default directory */ | |
6812 | ||
6813 | do { | |
6814 | cipb.dirInfo.ioVRefNum = 0; | |
6815 | cipb.dirInfo.ioFDirIndex = -1; | |
6816 | cipb.dirInfo.ioDrDirID = cipb.dirInfo.ioDrParID; /* go up to parent each time */ | |
6817 | ||
6818 | errno = PBGetCatInfo (&cipb, false); | |
6819 | if (errno != noErr) { | |
6820 | errno = ENOENT; | |
6821 | return 0; | |
6822 | } | |
6823 | ||
6824 | p2cstr (directoryName); | |
6825 | strcat (directoryName, ":"); | |
6826 | strcat (directoryName, MacPathname); /* attach to front since going up directory tree */ | |
6827 | strcpy (MacPathname, directoryName); | |
6828 | } while (cipb.dirInfo.ioDrDirID != fsRtDirID); /* until volume's root directory */ | |
6829 | ||
6830 | if (Mac2UnixPathname (MacPathname, path, MAXPATHLEN+1) == 0) | |
6831 | return 0; | |
6832 | else | |
6833 | return path; | |
6834 | } | |
6835 | ||
6836 | #endif /* macintosh */ |