Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
2ac53dfa | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 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 | ||
22 | #include <signal.h> | |
23 | #include <setjmp.h> | |
24 | ||
18160b98 | 25 | #include <config.h> |
9ee9af7a AS |
26 | #ifdef STDC_HEADERS |
27 | #include <stdlib.h> | |
28 | #endif | |
86a5659e | 29 | #include "lisp.h" |
9ac0d9e0 | 30 | #include "blockinput.h" |
86a5659e JB |
31 | #undef NULL |
32 | ||
33 | #define min(x,y) ((x) > (y) ? (y) : (x)) | |
34 | ||
35 | /* In this file, open, read and write refer to the system calls, | |
36 | not our sugared interfaces sys_open, sys_read and sys_write. | |
37 | Contrariwise, for systems where we use the system calls directly, | |
38 | define sys_read, etc. here as aliases for them. */ | |
39 | #ifndef read | |
40 | #define sys_read read | |
41 | #define sys_write write | |
42 | #endif /* `read' is not a macro */ | |
43 | ||
44 | #undef read | |
45 | #undef write | |
46 | ||
fe03522b RS |
47 | #ifdef WINDOWSNT |
48 | #define read _read | |
49 | #define write _write | |
50 | #include <windows.h> | |
51 | extern int errno; | |
52 | #endif /* not WINDOWSNT */ | |
53 | ||
86a5659e JB |
54 | #ifndef close |
55 | #define sys_close close | |
56 | #else | |
57 | #undef close | |
58 | #endif | |
59 | ||
60 | #ifndef open | |
61 | #define sys_open open | |
62 | #else /* `open' is a macro */ | |
63 | #undef open | |
64 | #endif /* `open' is a macro */ | |
65 | ||
986ffb24 JB |
66 | /* Does anyone other than VMS need this? */ |
67 | #ifndef fwrite | |
68 | #define sys_fwrite fwrite | |
69 | #else | |
70 | #undef fwrite | |
71 | #endif | |
72 | ||
e24f1d55 RS |
73 | #ifndef HAVE_H_ERRNO |
74 | extern int h_errno; | |
75 | #endif | |
76 | ||
86a5659e JB |
77 | #include <stdio.h> |
78 | #include <sys/types.h> | |
79 | #include <sys/stat.h> | |
80 | #include <errno.h> | |
81 | ||
dca8521c RS |
82 | /* Get _POSIX_VDISABLE, if it is available. */ |
83 | #ifdef HAVE_UNISTD_H | |
84 | #include <unistd.h> | |
85 | #endif | |
86 | ||
b05af5d3 PE |
87 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
88 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
89 | #include <sys/systeminfo.h> | |
90 | #endif | |
91 | ||
207bdbdb RS |
92 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
93 | #include <dos.h> | |
94 | #include "dosfns.h" | |
95 | #include "msdos.h" | |
96 | #include <sys/param.h> | |
15614e61 RS |
97 | |
98 | #if __DJGPP__ > 1 | |
99 | extern int etext; | |
100 | extern unsigned start __asm__ ("start"); | |
101 | #endif | |
207bdbdb RS |
102 | #endif |
103 | ||
9ee9af7a | 104 | #ifndef errno |
86a5659e | 105 | extern int errno; |
9ee9af7a | 106 | #endif |
86a5659e | 107 | |
bb4bc8e2 RM |
108 | #ifdef VMS |
109 | #include <rms.h> | |
110 | #include <ttdef.h> | |
111 | #include <tt2def.h> | |
112 | #include <iodef.h> | |
113 | #include <ssdef.h> | |
114 | #include <descrip.h> | |
115 | #include <fibdef.h> | |
116 | #include <atrdef.h> | |
117 | #include <ctype.h> | |
118 | #include <string.h> | |
119 | #ifdef __GNUC__ | |
120 | #include <sys/file.h> | |
121 | #else | |
122 | #include <file.h> | |
123 | #endif | |
124 | #undef F_SETFL | |
125 | #ifndef RAB$C_BID | |
126 | #include <rab.h> | |
127 | #endif | |
fe03522b | 128 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
129 | #endif /* VMS */ |
130 | ||
131 | #ifndef BSD4_1 | |
2a633456 | 132 | #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG) |
bb4bc8e2 RM |
133 | because the vms compiler doesn't grok `defined' */ |
134 | #include <fcntl.h> | |
135 | #endif | |
136 | #ifdef USG | |
137 | #ifndef USG5 | |
138 | #include <fcntl.h> | |
139 | #endif | |
140 | #endif | |
141 | #endif /* not 4.1 bsd */ | |
86a5659e | 142 | |
207bdbdb | 143 | #ifndef MSDOS |
86a5659e | 144 | #include <sys/ioctl.h> |
207bdbdb | 145 | #endif |
2a633456 | 146 | |
e04a4e0d | 147 | #include "systty.h" |
94c8642a | 148 | #include "syswait.h" |
86a5659e | 149 | |
86a5659e JB |
150 | #ifdef BROKEN_TIOCGWINSZ |
151 | #undef TIOCGWINSZ | |
8dca3179 | 152 | #undef TIOCSWINSZ |
86a5659e JB |
153 | #endif |
154 | ||
b917b2e2 | 155 | #if defined(USG) || defined(DGUX) |
86a5659e JB |
156 | #include <sys/utsname.h> |
157 | #include <string.h> | |
158 | #ifndef MEMORY_IN_STRING_H | |
159 | #include <memory.h> | |
160 | #endif | |
81444907 | 161 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
162 | #ifdef NEED_SIOCTL |
163 | #include <sys/sioctl.h> | |
164 | #endif | |
165 | #ifdef NEED_PTEM_H | |
166 | #include <sys/stream.h> | |
167 | #include <sys/ptem.h> | |
168 | #endif | |
81444907 | 169 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 170 | #endif /* USG or DGUX */ |
86a5659e | 171 | |
86a5659e JB |
172 | extern int quit_char; |
173 | ||
0137dbf7 | 174 | #include "frame.h" |
86a5659e JB |
175 | #include "window.h" |
176 | #include "termhooks.h" | |
177 | #include "termchar.h" | |
178 | #include "termopts.h" | |
179 | #include "dispextern.h" | |
180 | #include "process.h" | |
181 | ||
fe03522b RS |
182 | #ifdef WINDOWSNT |
183 | #include <direct.h> | |
184 | /* In process.h which conflicts with the local copy. */ | |
185 | #define _P_WAIT 0 | |
186 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
187 | int _CRTAPI1 _getpid (void); | |
188 | #endif | |
189 | ||
86a5659e JB |
190 | #ifdef NONSYSTEM_DIR_LIBRARY |
191 | #include "ndir.h" | |
192 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
193 | ||
91bac16a JB |
194 | #include "syssignal.h" |
195 | #include "systime.h" | |
d79998bc KH |
196 | #ifdef HAVE_UTIME_H |
197 | #include <utime.h> | |
198 | #endif | |
199 | ||
200 | #ifndef HAVE_UTIMES | |
201 | #ifndef HAVE_STRUCT_UTIMBUF | |
202 | /* We want to use utime rather than utimes, but we couldn't find the | |
203 | structure declaration. We'll use the traditional one. */ | |
204 | struct utimbuf { | |
205 | long actime; | |
206 | long modtime; | |
207 | }; | |
208 | #endif | |
209 | #endif | |
86a5659e | 210 | |
e336874b KH |
211 | #ifndef VFORK_RETURN_TYPE |
212 | #define VFORK_RETURN_TYPE int | |
213 | #endif | |
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 | ||
ba5971b3 RS |
234 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
235 | extern short ospeed; | |
236 | #else | |
515b04d0 RS |
237 | #if defined (HAVE_TERMIOS_H) && defined (LINUX) |
238 | #include <termios.h> | |
825e7e55 RS |
239 | /* HJL's version of libc is said to need this on the Alpha. |
240 | On the other hand, DEC OSF1 on the Alpha needs ospeed to be a short. */ | |
f2361c60 RS |
241 | extern speed_t ospeed; |
242 | #else | |
9f80a1c8 | 243 | extern short ospeed; |
f2361c60 | 244 | #endif |
ba5971b3 | 245 | #endif |
86a5659e | 246 | |
91bac16a | 247 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
248 | Under Unix, this is normally zero except when using X; |
249 | under VMS, we place the input channel number here. */ | |
250 | int input_fd; | |
b9c4113e RS |
251 | |
252 | void croak P_ ((char *)); | |
253 | ||
6d0d20a1 RS |
254 | #ifdef AIXHFT |
255 | void hft_init (); | |
256 | void hft_reset (); | |
257 | #endif | |
b9c4113e | 258 | |
64e971c3 RS |
259 | \f |
260 | /* Specify a different file descriptor for further input operations. */ | |
261 | ||
262 | void | |
263 | change_input_fd (fd) | |
264 | int fd; | |
265 | { | |
266 | input_fd = fd; | |
267 | } | |
268 | ||
269 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 270 | |
08633194 | 271 | void |
86a5659e JB |
272 | discard_tty_input () |
273 | { | |
fe03522b | 274 | #ifndef WINDOWSNT |
91bac16a | 275 | struct emacs_tty buf; |
86a5659e JB |
276 | |
277 | if (noninteractive) | |
278 | return; | |
279 | ||
280 | /* Discarding input is not safe when the input could contain | |
281 | replies from the X server. So don't do it. */ | |
282 | if (read_socket_hook) | |
283 | return; | |
284 | ||
285 | #ifdef VMS | |
286 | end_kbd_input (); | |
91bac16a JB |
287 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
288 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
289 | queue_kbd_input (); |
290 | #else /* not VMS */ | |
291 | #ifdef APOLLO | |
292 | { | |
293 | int zero = 0; | |
64e971c3 | 294 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
295 | } |
296 | #else /* not Apollo */ | |
fe03522b | 297 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 298 | while (dos_keyread () != -1) |
fe03522b | 299 | ; |
207bdbdb | 300 | #else /* not MSDOS */ |
91bac16a JB |
301 | EMACS_GET_TTY (input_fd, &buf); |
302 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 303 | #endif /* not MSDOS */ |
86a5659e JB |
304 | #endif /* not Apollo */ |
305 | #endif /* not VMS */ | |
fe03522b | 306 | #endif /* not WINDOWSNT */ |
86a5659e JB |
307 | } |
308 | ||
309 | #ifdef SIGTSTP | |
310 | ||
64e971c3 RS |
311 | /* Arrange for character C to be read as the next input from |
312 | the terminal. */ | |
313 | ||
dfcf069d | 314 | void |
86a5659e JB |
315 | stuff_char (c) |
316 | char c; | |
317 | { | |
23dab951 RS |
318 | if (read_socket_hook) |
319 | return; | |
320 | ||
86a5659e JB |
321 | /* Should perhaps error if in batch mode */ |
322 | #ifdef TIOCSTI | |
64e971c3 | 323 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 324 | #else /* no TIOCSTI */ |
71f06467 | 325 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
326 | #endif /* no TIOCSTI */ |
327 | } | |
328 | ||
329 | #endif /* SIGTSTP */ | |
64e971c3 | 330 | \f |
08633194 | 331 | void |
86a5659e JB |
332 | init_baud_rate () |
333 | { | |
86a5659e JB |
334 | if (noninteractive) |
335 | ospeed = 0; | |
336 | else | |
337 | { | |
dfc366c9 RS |
338 | #ifdef INIT_BAUD_RATE |
339 | INIT_BAUD_RATE (); | |
340 | #else | |
fe03522b | 341 | #ifdef DOS_NT |
207bdbdb | 342 | ospeed = 15; |
fe03522b | 343 | #else /* not DOS_NT */ |
86a5659e | 344 | #ifdef VMS |
91bac16a JB |
345 | struct sensemode sg; |
346 | ||
347 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 348 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
349 | ospeed = sg.xmit_baud; |
350 | #else /* not VMS */ | |
e04a4e0d JB |
351 | #ifdef HAVE_TERMIOS |
352 | struct termios sg; | |
91bac16a | 353 | |
71f06467 | 354 | sg.c_cflag = B9600; |
64e971c3 | 355 | tcgetattr (input_fd, &sg); |
d7272cff | 356 | ospeed = cfgetospeed (&sg); |
5baff9ce | 357 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b RS |
358 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
359 | if (ospeed == 0) | |
360 | ospeed = getobaud (sg.c_cflag); | |
361 | #endif | |
e04a4e0d JB |
362 | #else /* neither VMS nor TERMIOS */ |
363 | #ifdef HAVE_TERMIO | |
364 | struct termio sg; | |
91bac16a | 365 | |
71f06467 | 366 | sg.c_cflag = B9600; |
e04a4e0d | 367 | #ifdef HAVE_TCATTR |
64e971c3 | 368 | tcgetattr (input_fd, &sg); |
e04a4e0d | 369 | #else |
6c65530f | 370 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 371 | #endif |
91bac16a | 372 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 373 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
374 | struct sgttyb sg; |
375 | ||
376 | sg.sg_ospeed = B9600; | |
64e971c3 | 377 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 378 | abort (); |
91bac16a | 379 | ospeed = sg.sg_ospeed; |
91bac16a | 380 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 381 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 382 | #endif /* not VMS */ |
fe03522b | 383 | #endif /* not DOS_NT */ |
dfc366c9 | 384 | #endif /* not INIT_BAUD_RATE */ |
86a5659e JB |
385 | } |
386 | ||
387 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
fe03522b | 388 | ? baud_convert[ospeed] : 9600); |
86a5659e JB |
389 | if (baud_rate == 0) |
390 | baud_rate = 1200; | |
391 | } | |
392 | ||
393 | /*ARGSUSED*/ | |
dfcf069d | 394 | void |
86a5659e JB |
395 | set_exclusive_use (fd) |
396 | int fd; | |
397 | { | |
398 | #ifdef FIOCLEX | |
399 | ioctl (fd, FIOCLEX, 0); | |
400 | #endif | |
401 | /* Ok to do nothing if this feature does not exist */ | |
402 | } | |
64e971c3 | 403 | \f |
86a5659e JB |
404 | #ifndef subprocesses |
405 | ||
406 | wait_without_blocking () | |
407 | { | |
2a633456 | 408 | #ifdef BSD_SYSTEM |
86a5659e JB |
409 | wait3 (0, WNOHANG | WUNTRACED, 0); |
410 | #else | |
411 | croak ("wait_without_blocking"); | |
412 | #endif | |
413 | synch_process_alive = 0; | |
414 | } | |
415 | ||
416 | #endif /* not subprocesses */ | |
417 | ||
418 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 419 | (at least for bsd). */ |
86a5659e JB |
420 | |
421 | SIGTYPE | |
422 | wait_for_termination_signal () | |
423 | {} | |
424 | ||
425 | /* Wait for subprocess with process id `pid' to terminate and | |
426 | make sure it will get eliminated (not remain forever as a zombie) */ | |
427 | ||
08633194 | 428 | void |
86a5659e JB |
429 | wait_for_termination (pid) |
430 | int pid; | |
431 | { | |
432 | while (1) | |
433 | { | |
434 | #ifdef subprocesses | |
435 | #ifdef VMS | |
436 | int status; | |
437 | ||
986ffb24 | 438 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
439 | break; |
440 | #else /* not VMS */ | |
2a633456 | 441 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
442 | /* Note that kill returns -1 even if the process is just a zombie now. |
443 | But inevitably a SIGCHLD interrupt should be generated | |
444 | and child_sig will do wait3 and make the process go away. */ | |
445 | /* There is some indication that there is a bug involved with | |
446 | termination of subprocesses, perhaps involving a kernel bug too, | |
447 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
448 | if that causes the problem to go away or get worse. */ | |
449 | sigsetmask (sigmask (SIGCHLD)); | |
450 | if (0 > kill (pid, 0)) | |
fe03522b | 451 | { |
4c8975ad RS |
452 | sigsetmask (SIGEMPTYMASK); |
453 | kill (getpid (), SIGCHLD); | |
454 | break; | |
455 | } | |
456 | if (wait_debugging) | |
457 | sleep (1); | |
458 | else | |
459 | sigpause (SIGEMPTYMASK); | |
2a633456 | 460 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 461 | #if defined (UNIPLUS) |
4c8975ad RS |
462 | if (0 > kill (pid, 0)) |
463 | break; | |
464 | wait (0); | |
2a633456 | 465 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
fe03522b | 466 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
9ab714c7 RS |
467 | sigblock (sigmask (SIGCHLD)); |
468 | if (0 > kill (pid, 0)) | |
469 | { | |
470 | sigunblock (sigmask (SIGCHLD)); | |
471 | break; | |
472 | } | |
92c995de | 473 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 474 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
475 | #ifdef HAVE_SYSV_SIGPAUSE |
476 | sighold (SIGCHLD); | |
477 | if (0 > kill (pid, 0)) | |
478 | { | |
479 | sigrelse (SIGCHLD); | |
480 | break; | |
481 | } | |
482 | sigpause (SIGCHLD); | |
483 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
484 | #ifdef WINDOWSNT |
485 | wait (0); | |
486 | break; | |
487 | #else /* not WINDOWSNT */ | |
4c8975ad | 488 | if (0 > kill (pid, 0)) |
86a5659e | 489 | break; |
4c8975ad RS |
490 | /* Using sleep instead of pause avoids timing error. |
491 | If the inferior dies just before the sleep, | |
492 | we lose just one second. */ | |
493 | sleep (1); | |
fe03522b | 494 | #endif /* not WINDOWSNT */ |
4c8975ad | 495 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 496 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 497 | #endif /* not UNIPLUS */ |
2a633456 | 498 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
499 | #endif /* not VMS */ |
500 | #else /* not subprocesses */ | |
15614e61 RS |
501 | #if __DJGPP__ > 1 |
502 | break; | |
503 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
504 | #ifndef BSD4_1 |
505 | if (kill (pid, 0) < 0) | |
506 | break; | |
507 | wait (0); | |
508 | #else /* BSD4_1 */ | |
509 | int status; | |
510 | status = wait (0); | |
511 | if (status == pid || status == -1) | |
512 | break; | |
513 | #endif /* BSD4_1 */ | |
15614e61 | 514 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
515 | #endif /* not subprocesses */ |
516 | } | |
517 | } | |
518 | ||
519 | #ifdef subprocesses | |
520 | ||
521 | /* | |
522 | * flush any pending output | |
523 | * (may flush input as well; it does not matter the way we use it) | |
524 | */ | |
525 | ||
08633194 | 526 | void |
86a5659e JB |
527 | flush_pending_output (channel) |
528 | int channel; | |
529 | { | |
530 | #ifdef HAVE_TERMIOS | |
531 | /* If we try this, we get hit with SIGTTIN, because | |
532 | the child's tty belongs to the child's pgrp. */ | |
533 | #else | |
534 | #ifdef TCFLSH | |
535 | ioctl (channel, TCFLSH, 1); | |
536 | #else | |
537 | #ifdef TIOCFLUSH | |
538 | int zero = 0; | |
539 | /* 3rd arg should be ignored | |
540 | but some 4.2 kernels actually want the address of an int | |
541 | and nonzero means something different. */ | |
542 | ioctl (channel, TIOCFLUSH, &zero); | |
543 | #endif | |
544 | #endif | |
545 | #endif | |
546 | } | |
64e971c3 | 547 | \f |
86a5659e JB |
548 | #ifndef VMS |
549 | /* Set up the terminal at the other end of a pseudo-terminal that | |
550 | we will be controlling an inferior through. | |
551 | It should not echo or do line-editing, since that is done | |
552 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
553 | ||
08633194 | 554 | void |
86a5659e JB |
555 | child_setup_tty (out) |
556 | int out; | |
557 | { | |
fe03522b | 558 | #ifndef DOS_NT |
91bac16a JB |
559 | struct emacs_tty s; |
560 | ||
561 | EMACS_GET_TTY (out, &s); | |
86a5659e | 562 | |
31be8d24 | 563 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
564 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
565 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 566 | #ifdef NLDLY |
91bac16a JB |
567 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
568 | /* No output delays */ | |
9d4e5eea | 569 | #endif |
91bac16a JB |
570 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
571 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
572 | #ifdef IUCLC |
573 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
574 | #endif | |
f7097b2a RS |
575 | #ifdef ISTRIP |
576 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
577 | #endif | |
23e4c8be | 578 | #ifdef OLCUC |
9d4e5eea RS |
579 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
580 | #endif | |
f7097b2a | 581 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 582 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 583 | #if 0 |
eb8c3be9 | 584 | /* Said to be unnecessary: */ |
91bac16a JB |
585 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
586 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
587 | #endif | |
588 | ||
589 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
590 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
591 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
592 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 593 | |
86a5659e | 594 | #ifdef HPUX |
91bac16a | 595 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 596 | #endif /* HPUX */ |
91bac16a | 597 | |
86a5659e JB |
598 | #ifdef AIX |
599 | /* AIX enhanced edit loses NULs, so disable it */ | |
600 | #ifndef IBMR2AIX | |
91bac16a JB |
601 | s.main.c_line = 0; |
602 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
603 | #endif |
604 | /* Also, PTY overloads NUL and BREAK. | |
605 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
606 | s.main.c_iflag &= ~IGNBRK; |
607 | s.main.c_iflag &= ~BRKINT; | |
608 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 609 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
610 | #ifdef SIGNALS_VIA_CHARACTERS |
611 | /* the QUIT and INTR character are used in process_send_signal | |
612 | so set them here to something useful. */ | |
613 | if (s.main.c_cc[VQUIT] == 0377) | |
614 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
615 | if (s.main.c_cc[VINTR] == 0377) | |
616 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
617 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
618 | /* QUIT and INTR work better as signals, so disable character forms */ | |
619 | s.main.c_cc[VQUIT] = 0377; | |
620 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 621 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
622 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
623 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 624 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
625 | #endif /* AIX */ |
626 | ||
627 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
628 | |
629 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
630 | | CBREAK | TANDEM); | |
a00d5589 | 631 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
632 | s.main.sg_erase = 0377; |
633 | s.main.sg_kill = 0377; | |
1bf96fb5 | 634 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 635 | |
86a5659e JB |
636 | #endif /* not HAVE_TERMIO */ |
637 | ||
91bac16a | 638 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
639 | |
640 | #ifdef BSD4_1 | |
641 | if (interrupt_input) | |
642 | reset_sigio (); | |
643 | #endif /* BSD4_1 */ | |
644 | #ifdef RTU | |
645 | { | |
646 | int zero = 0; | |
647 | ioctl (out, FIOASYNC, &zero); | |
648 | } | |
649 | #endif /* RTU */ | |
fe03522b | 650 | #endif /* not DOS_NT */ |
86a5659e JB |
651 | } |
652 | #endif /* not VMS */ | |
653 | ||
654 | #endif /* subprocesses */ | |
64e971c3 | 655 | \f |
86a5659e JB |
656 | /* Record a signal code and the handler for it. */ |
657 | struct save_signal | |
658 | { | |
659 | int code; | |
35a05cca | 660 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
661 | }; |
662 | ||
35a05cca AS |
663 | static void save_signal_handlers P_ ((struct save_signal *)); |
664 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
665 | ||
86a5659e JB |
666 | /* Suspend the Emacs process; give terminal to its superior. */ |
667 | ||
08633194 | 668 | void |
86a5659e JB |
669 | sys_suspend () |
670 | { | |
671 | #ifdef VMS | |
88191e36 RS |
672 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
673 | to the current emacs as a cheaper than starting a whole new process. This | |
674 | is set up by KEPTEDITOR.COM. */ | |
675 | unsigned long parent_id, foster_parent_id; | |
676 | char *fpid_string; | |
677 | ||
678 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
679 | if (fpid_string != NULL) | |
680 | { | |
681 | sscanf (fpid_string, "%x", &foster_parent_id); | |
682 | if (foster_parent_id != 0) | |
683 | parent_id = foster_parent_id; | |
684 | else | |
685 | parent_id = getppid (); | |
686 | } | |
687 | else | |
688 | parent_id = getppid (); | |
689 | ||
9ac0d9e0 | 690 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 691 | |
86a5659e JB |
692 | if (parent_id && parent_id != 0xffffffff) |
693 | { | |
694 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
695 | int status = LIB$ATTACH (&parent_id) & 1; | |
696 | signal (SIGINT, oldsig); | |
697 | return status; | |
698 | } | |
699 | else | |
700 | { | |
701 | struct { | |
702 | int l; | |
703 | char *a; | |
704 | } d_prompt; | |
705 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
706 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 707 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
708 | return 1; |
709 | } | |
710 | return -1; | |
711 | #else | |
207bdbdb | 712 | #if defined(SIGTSTP) && !defined(MSDOS) |
86a5659e | 713 | |
5a570e37 | 714 | { |
e89a2cd5 | 715 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
716 | EMACS_KILLPG (pgrp, SIGTSTP); |
717 | } | |
86a5659e JB |
718 | |
719 | #else /* No SIGTSTP */ | |
720 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
721 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
722 | kill (getpid (), SIGQUIT); | |
723 | ||
724 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
725 | ||
726 | /* On a system where suspending is not implemented, | |
727 | instead fork a subshell and let it talk directly to the terminal | |
728 | while we wait. */ | |
a0932daa KH |
729 | sys_subshell (); |
730 | ||
731 | #endif /* no USG_JOBCTRL */ | |
732 | #endif /* no SIGTSTP */ | |
733 | #endif /* not VMS */ | |
734 | } | |
735 | ||
736 | /* Fork a subshell. */ | |
737 | ||
08633194 | 738 | void |
a0932daa KH |
739 | sys_subshell () |
740 | { | |
741 | #ifndef VMS | |
ad00c243 | 742 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
743 | int st; |
744 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
745 | #endif | |
efa04277 | 746 | int pid; |
86a5659e | 747 | struct save_signal saved_handlers[5]; |
efa04277 RS |
748 | Lisp_Object dir; |
749 | unsigned char *str = 0; | |
750 | int len; | |
86a5659e JB |
751 | |
752 | saved_handlers[0].code = SIGINT; | |
753 | saved_handlers[1].code = SIGQUIT; | |
754 | saved_handlers[2].code = SIGTERM; | |
755 | #ifdef SIGIO | |
756 | saved_handlers[3].code = SIGIO; | |
757 | saved_handlers[4].code = 0; | |
758 | #else | |
759 | saved_handlers[3].code = 0; | |
760 | #endif | |
761 | ||
efa04277 RS |
762 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
763 | which somehow wedges the hp compiler. So instead... */ | |
764 | ||
765 | dir = intern ("default-directory"); | |
0e7e7a58 | 766 | if (NILP (Fboundp (dir))) |
efa04277 RS |
767 | goto xyzzy; |
768 | dir = Fsymbol_value (dir); | |
914e81a2 | 769 | if (!STRINGP (dir)) |
efa04277 RS |
770 | goto xyzzy; |
771 | ||
772 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
773 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
774 | len = XSTRING (dir)->size; | |
775 | bcopy (XSTRING (dir)->data, str, len); | |
776 | if (str[len - 1] != '/') str[len++] = '/'; | |
777 | str[len] = 0; | |
778 | xyzzy: | |
779 | ||
ad00c243 | 780 | #ifdef DOS_NT |
7964ba9e | 781 | pid = 0; |
718ca3cf RS |
782 | #if __DJGPP__ > 1 |
783 | save_signal_handlers (saved_handlers); | |
784 | synch_process_alive = 1; | |
785 | #endif /* __DJGPP__ > 1 */ | |
7964ba9e | 786 | #else |
efa04277 | 787 | pid = vfork (); |
86a5659e JB |
788 | if (pid == -1) |
789 | error ("Can't spawn subshell"); | |
7964ba9e RS |
790 | #endif |
791 | ||
86a5659e JB |
792 | if (pid == 0) |
793 | { | |
7964ba9e | 794 | char *sh = 0; |
86a5659e | 795 | |
ad00c243 | 796 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 797 | getwd (oldwd); |
7964ba9e RS |
798 | if (sh == 0) |
799 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 800 | #endif |
7964ba9e RS |
801 | if (sh == 0) |
802 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
803 | if (sh == 0) |
804 | sh = "sh"; | |
207bdbdb | 805 | |
86a5659e | 806 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 807 | if (str) |
074c438c | 808 | chdir ((char *) str); |
efa04277 | 809 | |
86a5659e JB |
810 | #ifdef subprocesses |
811 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
812 | #endif | |
1593c2fe | 813 | |
6f8b4d01 | 814 | #ifdef SET_EMACS_PRIORITY |
1593c2fe JB |
815 | { |
816 | extern int emacs_priority; | |
817 | ||
6f8b4d01 | 818 | if (emacs_priority < 0) |
1593c2fe JB |
819 | nice (-emacs_priority); |
820 | } | |
821 | #endif | |
822 | ||
fe03522b | 823 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
207bdbdb RS |
824 | st = system (sh); |
825 | chdir (oldwd); | |
7964ba9e | 826 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 827 | if (st) |
fe03522b | 828 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 829 | #endif |
207bdbdb | 830 | #else /* not MSDOS */ |
fe03522b | 831 | #ifdef WINDOWSNT |
fe03522b RS |
832 | /* Waits for process completion */ |
833 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 834 | chdir (oldwd); |
fe03522b RS |
835 | if (pid == -1) |
836 | write (1, "Can't execute subshell", 22); | |
fe03522b | 837 | #else /* not WINDOWSNT */ |
86a5659e JB |
838 | execlp (sh, sh, 0); |
839 | write (1, "Can't execute subshell", 22); | |
840 | _exit (1); | |
fe03522b | 841 | #endif /* not WINDOWSNT */ |
207bdbdb | 842 | #endif /* not MSDOS */ |
86a5659e JB |
843 | } |
844 | ||
718ca3cf RS |
845 | /* Do this now if we did not do it before. */ |
846 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 847 | save_signal_handlers (saved_handlers); |
ffafc793 | 848 | synch_process_alive = 1; |
718ca3cf RS |
849 | #endif |
850 | ||
ad00c243 | 851 | #ifndef DOS_NT |
86a5659e | 852 | wait_for_termination (pid); |
7964ba9e | 853 | #endif |
86a5659e | 854 | restore_signal_handlers (saved_handlers); |
718ca3cf | 855 | synch_process_alive = 0; |
a0932daa | 856 | #endif /* !VMS */ |
86a5659e JB |
857 | } |
858 | ||
35a05cca | 859 | static void |
86a5659e JB |
860 | save_signal_handlers (saved_handlers) |
861 | struct save_signal *saved_handlers; | |
862 | { | |
863 | while (saved_handlers->code) | |
864 | { | |
508b171c | 865 | saved_handlers->handler |
35a05cca | 866 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
867 | saved_handlers++; |
868 | } | |
869 | } | |
870 | ||
35a05cca | 871 | static void |
86a5659e JB |
872 | restore_signal_handlers (saved_handlers) |
873 | struct save_signal *saved_handlers; | |
874 | { | |
875 | while (saved_handlers->code) | |
876 | { | |
877 | signal (saved_handlers->code, saved_handlers->handler); | |
878 | saved_handlers++; | |
879 | } | |
880 | } | |
881 | \f | |
882 | #ifdef F_SETFL | |
883 | ||
884 | int old_fcntl_flags; | |
885 | ||
08633194 | 886 | void |
23dab951 RS |
887 | init_sigio (fd) |
888 | int fd; | |
86a5659e JB |
889 | { |
890 | #ifdef FASYNC | |
23dab951 RS |
891 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
892 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 893 | #endif |
23dab951 | 894 | interrupts_deferred = 0; |
86a5659e JB |
895 | } |
896 | ||
590034f9 | 897 | void |
86a5659e JB |
898 | reset_sigio () |
899 | { | |
900 | unrequest_sigio (); | |
901 | } | |
902 | ||
eb8c3be9 | 903 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e | 904 | |
08633194 | 905 | void |
86a5659e JB |
906 | request_sigio () |
907 | { | |
23dab951 RS |
908 | if (read_socket_hook) |
909 | return; | |
910 | ||
86a5659e | 911 | #ifdef SIGWINCH |
e065a56e | 912 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 913 | #endif |
64e971c3 | 914 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
915 | |
916 | interrupts_deferred = 0; | |
917 | } | |
918 | ||
08633194 | 919 | void |
86a5659e JB |
920 | unrequest_sigio () |
921 | { | |
23dab951 RS |
922 | if (read_socket_hook) |
923 | return; | |
924 | ||
86a5659e | 925 | #ifdef SIGWINCH |
e065a56e | 926 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 927 | #endif |
64e971c3 | 928 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
929 | interrupts_deferred = 1; |
930 | } | |
931 | ||
932 | #else /* no FASYNC */ | |
933 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
934 | ||
08633194 | 935 | void |
86a5659e JB |
936 | request_sigio () |
937 | { | |
938 | int on = 1; | |
23dab951 RS |
939 | |
940 | if (read_socket_hook) | |
941 | return; | |
942 | ||
64e971c3 | 943 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
944 | interrupts_deferred = 0; |
945 | } | |
946 | ||
08633194 | 947 | void |
86a5659e JB |
948 | unrequest_sigio () |
949 | { | |
950 | int off = 0; | |
951 | ||
23dab951 RS |
952 | if (read_socket_hook) |
953 | return; | |
954 | ||
64e971c3 | 955 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
956 | interrupts_deferred = 1; |
957 | } | |
958 | ||
959 | #else /* not FASYNC, not STRIDE */ | |
960 | ||
25ab68af RS |
961 | #ifdef _CX_UX |
962 | ||
963 | #include <termios.h> | |
964 | ||
08633194 | 965 | void |
25ab68af RS |
966 | request_sigio () |
967 | { | |
968 | int on = 1; | |
969 | sigset_t st; | |
970 | ||
23dab951 RS |
971 | if (read_socket_hook) |
972 | return; | |
973 | ||
25ab68af RS |
974 | sigemptyset(&st); |
975 | sigaddset(&st, SIGIO); | |
976 | ioctl (input_fd, FIOASYNC, &on); | |
977 | interrupts_deferred = 0; | |
978 | sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0); | |
979 | } | |
980 | ||
08633194 | 981 | void |
25ab68af RS |
982 | unrequest_sigio () |
983 | { | |
984 | int off = 0; | |
985 | ||
23dab951 RS |
986 | if (read_socket_hook) |
987 | return; | |
988 | ||
25ab68af RS |
989 | ioctl (input_fd, FIOASYNC, &off); |
990 | interrupts_deferred = 1; | |
991 | } | |
992 | ||
993 | #else /* ! _CX_UX */ | |
994 | ||
08633194 | 995 | void |
86a5659e JB |
996 | request_sigio () |
997 | { | |
23dab951 RS |
998 | if (read_socket_hook) |
999 | return; | |
1000 | ||
86a5659e JB |
1001 | croak ("request_sigio"); |
1002 | } | |
1003 | ||
08633194 | 1004 | void |
86a5659e JB |
1005 | unrequest_sigio () |
1006 | { | |
23dab951 RS |
1007 | if (read_socket_hook) |
1008 | return; | |
1009 | ||
86a5659e JB |
1010 | croak ("unrequest_sigio"); |
1011 | } | |
1012 | ||
25ab68af | 1013 | #endif /* _CX_UX */ |
86a5659e JB |
1014 | #endif /* STRIDE */ |
1015 | #endif /* FASYNC */ | |
1016 | #endif /* F_SETFL */ | |
1017 | \f | |
9ae8f997 JB |
1018 | /* Saving and restoring the process group of Emacs's terminal. */ |
1019 | ||
0ba73609 | 1020 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1021 | |
1022 | /* The process group of which Emacs was a member when it initially | |
1023 | started. | |
1024 | ||
1025 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1026 | getpid ()), then we know we're running under a shell with job | |
1027 | control (Emacs would never be run as part of a pipeline). | |
1028 | Everything is fine. | |
1029 | ||
1030 | If Emacs was not in its own process group, then we know we're | |
1031 | running under a shell (or a caller) that doesn't know how to | |
1032 | separate itself from Emacs (like sh). Emacs must be in its own | |
1033 | process group in order to receive SIGIO correctly. In this | |
1034 | situation, we put ourselves in our own pgroup, forcibly set the | |
1035 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1036 | the tty's pgroup just like any other terminal setting. If | |
1037 | inherited_group was not the tty's pgroup, then we'll get a | |
1038 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
1039 | it goes foreground in the future, which is what should happen. */ | |
1040 | int inherited_pgroup; | |
1041 | ||
1042 | /* Split off the foreground process group to Emacs alone. | |
1043 | When we are in the foreground, but not started in our own process | |
1044 | group, redirect the TTY to point to our own process group. We need | |
1045 | to be in our own process group to receive SIGIO properly. */ | |
dfcf069d | 1046 | void |
9ae8f997 JB |
1047 | narrow_foreground_group () |
1048 | { | |
1049 | int me = getpid (); | |
1050 | ||
1051 | setpgrp (0, inherited_pgroup); | |
1052 | if (inherited_pgroup != me) | |
64e971c3 | 1053 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
1054 | setpgrp (0, me); |
1055 | } | |
1056 | ||
1057 | /* Set the tty to our original foreground group. */ | |
dfcf069d | 1058 | void |
9ae8f997 JB |
1059 | widen_foreground_group () |
1060 | { | |
1061 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 1062 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
1063 | setpgrp (0, inherited_pgroup); |
1064 | } | |
1065 | ||
0ba73609 | 1066 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1067 | \f |
68936329 JB |
1068 | /* Getting and setting emacs_tty structures. */ |
1069 | ||
1070 | /* Set *TC to the parameters associated with the terminal FD. | |
1071 | Return zero if all's well, or -1 if we ran into an error we | |
1072 | couldn't deal with. */ | |
1073 | int | |
1074 | emacs_get_tty (fd, settings) | |
1075 | int fd; | |
1076 | struct emacs_tty *settings; | |
1077 | { | |
1078 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1079 | #ifdef HAVE_TCATTR | |
1080 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1d9f9f9e | 1081 | bzero (&settings->main, sizeof (settings->main)); |
68936329 JB |
1082 | if (tcgetattr (fd, &settings->main) < 0) |
1083 | return -1; | |
1084 | ||
1085 | #else | |
1086 | #ifdef HAVE_TERMIO | |
1087 | /* The SYSV-style interface? */ | |
1088 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1089 | return -1; | |
1090 | ||
1091 | #else | |
1092 | #ifdef VMS | |
1093 | /* Vehemently Monstrous System? :-) */ | |
1094 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1095 | &settings->main.class, 12, 0, 0, 0, 0) | |
1096 | & 1)) | |
1097 | return -1; | |
1098 | ||
1099 | #else | |
fe03522b | 1100 | #ifndef DOS_NT |
68936329 JB |
1101 | /* I give up - I hope you have the BSD ioctls. */ |
1102 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1103 | return -1; | |
fe03522b | 1104 | #endif /* not DOS_NT */ |
68936329 JB |
1105 | #endif |
1106 | #endif | |
1107 | #endif | |
1108 | ||
1109 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1110 | #ifdef HAVE_LTCHARS |
68936329 JB |
1111 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1112 | return -1; | |
1113 | #endif | |
1114 | ||
1115 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1116 | #ifdef HAVE_TCHARS |
68936329 JB |
1117 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1118 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1119 | return -1; | |
1120 | #endif | |
1121 | ||
1122 | /* We have survived the tempest. */ | |
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1128 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1129 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1130 | |
68936329 | 1131 | int |
394049ec | 1132 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1133 | int fd; |
1134 | struct emacs_tty *settings; | |
394049ec | 1135 | int flushp; |
68936329 JB |
1136 | { |
1137 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1138 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1139 | int i; |
68936329 JB |
1140 | /* We have those nifty POSIX tcmumbleattr functions. |
1141 | William J. Smith <wjs@wiis.wang.com> writes: | |
1142 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
1143 | able to perform any of the requested actions, even if some | |
1144 | of the requested actions could not be performed. | |
1145 | We must read settings back to ensure tty setup properly. | |
1146 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1147 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1148 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1149 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1150 | { |
1151 | if (errno == EINTR) | |
1152 | continue; | |
1153 | else | |
1154 | return -1; | |
1155 | } | |
1156 | else | |
1157 | { | |
1158 | struct termios new; | |
1159 | ||
1d9f9f9e | 1160 | bzero (&new, sizeof (new)); |
68936329 JB |
1161 | /* Get the current settings, and see if they're what we asked for. */ |
1162 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1163 | /* We cannot use memcmp on the whole structure here because under |
1164 | * aix386 the termios structure has some reserved field that may | |
1165 | * not be filled in. | |
1166 | */ | |
1167 | if ( new.c_iflag == settings->main.c_iflag | |
1168 | && new.c_oflag == settings->main.c_oflag | |
1169 | && new.c_cflag == settings->main.c_cflag | |
1170 | && new.c_lflag == settings->main.c_lflag | |
1171 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 1172 | break; |
e6cc3307 RS |
1173 | else |
1174 | continue; | |
68936329 JB |
1175 | } |
1176 | ||
1177 | #else | |
1178 | #ifdef HAVE_TERMIO | |
1179 | /* The SYSV-style interface? */ | |
394049ec | 1180 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1181 | return -1; |
1182 | ||
1183 | #else | |
1184 | #ifdef VMS | |
1185 | /* Vehemently Monstrous System? :-) */ | |
1186 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1187 | &settings->main.class, 12, 0, 0, 0, 0) | |
1188 | & 1)) | |
1189 | return -1; | |
1190 | ||
1191 | #else | |
fe03522b | 1192 | #ifndef DOS_NT |
68936329 | 1193 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1194 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1195 | return -1; |
fe03522b | 1196 | #endif /* not DOS_NT */ |
68936329 JB |
1197 | |
1198 | #endif | |
1199 | #endif | |
1200 | #endif | |
1201 | ||
1202 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1203 | #ifdef HAVE_LTCHARS |
68936329 JB |
1204 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1205 | return -1; | |
1206 | #endif | |
1207 | ||
1208 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1209 | #ifdef HAVE_TCHARS |
68936329 JB |
1210 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1211 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1212 | return -1; | |
1213 | #endif | |
1214 | ||
1215 | /* We have survived the tempest. */ | |
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | \f | |
91bac16a JB |
1220 | /* The initial tty mode bits */ |
1221 | struct emacs_tty old_tty; | |
86a5659e | 1222 | |
7e32a4fb KH |
1223 | /* 1 if we have been through init_sys_modes. */ |
1224 | int term_initted; | |
1225 | ||
1226 | /* 1 if outer tty status has been recorded. */ | |
1227 | int old_tty_valid; | |
86a5659e | 1228 | |
91bac16a JB |
1229 | #ifdef BSD4_1 |
1230 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1231 | sigio. */ | |
1232 | int lmode; | |
1233 | #endif | |
1234 | ||
46f2fdac | 1235 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1236 | #ifdef F_SETOWN |
1237 | int old_fcntl_owner; | |
1238 | #endif /* F_SETOWN */ | |
46f2fdac | 1239 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1240 | |
86a5659e JB |
1241 | /* This may also be defined in stdio, |
1242 | but if so, this does no harm, | |
1243 | and using the same name avoids wasting the other one's space. */ | |
1244 | ||
6a0d0ed3 KH |
1245 | #ifdef nec_ews_svr4 |
1246 | extern char *_sobuf ; | |
1247 | #else | |
86a5659e JB |
1248 | #if defined (USG) || defined (DGUX) |
1249 | unsigned char _sobuf[BUFSIZ+8]; | |
1250 | #else | |
1251 | char _sobuf[BUFSIZ]; | |
1252 | #endif | |
6a0d0ed3 | 1253 | #endif |
86a5659e | 1254 | |
50b8cf60 | 1255 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1256 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1257 | #endif | |
50b8cf60 | 1258 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1259 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
86a5659e JB |
1260 | #endif |
1261 | ||
08633194 | 1262 | void |
86a5659e JB |
1263 | init_sys_modes () |
1264 | { | |
91bac16a JB |
1265 | struct emacs_tty tty; |
1266 | ||
86a5659e JB |
1267 | #ifdef VMS |
1268 | #if 0 | |
1269 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1270 | extern int (*interrupt_signal) (); | |
1271 | #endif | |
1272 | #endif | |
1273 | ||
4ec5cb58 RS |
1274 | Vtty_erase_char = Qnil; |
1275 | ||
86a5659e JB |
1276 | if (noninteractive) |
1277 | return; | |
1278 | ||
1279 | #ifdef VMS | |
1280 | if (!input_ef) | |
1281 | input_ef = get_kbd_event_flag (); | |
1282 | /* LIB$GET_EF (&input_ef); */ | |
1283 | SYS$CLREF (input_ef); | |
1284 | waiting_for_ast = 0; | |
1285 | if (!timer_ef) | |
1286 | timer_ef = get_timer_event_flag (); | |
1287 | /* LIB$GET_EF (&timer_ef); */ | |
1288 | SYS$CLREF (timer_ef); | |
210b2b4f | 1289 | #if 0 |
86a5659e JB |
1290 | if (!process_ef) |
1291 | { | |
1292 | LIB$GET_EF (&process_ef); | |
1293 | SYS$CLREF (process_ef); | |
1294 | } | |
1295 | if (input_ef / 32 != process_ef / 32) | |
1296 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1297 | #endif |
86a5659e | 1298 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1299 | croak ("Input and timer event flags in different clusters."); |
1300 | #if 0 | |
86a5659e JB |
1301 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1302 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1303 | #endif |
86a5659e JB |
1304 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1305 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1306 | #ifndef VMS4_4 |
1307 | sys_access_reinit (); | |
1308 | #endif | |
86a5659e | 1309 | #endif /* not VMS */ |
91bac16a | 1310 | |
0ba73609 | 1311 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1312 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1313 | narrow_foreground_group (); | |
1314 | #endif | |
1315 | ||
23cafe43 | 1316 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1317 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1318 | needs the initialization code below. */ | |
86a5659e | 1319 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1320 | #endif |
86a5659e | 1321 | { |
23dab951 RS |
1322 | EMACS_GET_TTY (input_fd, &old_tty); |
1323 | ||
7e32a4fb KH |
1324 | old_tty_valid = 1; |
1325 | ||
91bac16a | 1326 | tty = old_tty; |
86a5659e | 1327 | |
31be8d24 | 1328 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2e34157c | 1329 | XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); |
4ec5cb58 | 1330 | |
421dd92f RS |
1331 | #ifdef DGUX |
1332 | /* This allows meta to be sent on 8th bit. */ | |
1333 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1334 | #endif | |
91bac16a JB |
1335 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1336 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1337 | #ifdef INLCR /* I'm just being cautious, |
1338 | since I can't check how widespread INLCR is--rms. */ | |
1339 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
1340 | #endif | |
86a5659e | 1341 | #ifdef ISTRIP |
91bac16a | 1342 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1343 | #endif |
91bac16a JB |
1344 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1345 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1346 | #ifdef IEXTEN |
b26bc18b | 1347 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1348 | #endif |
91bac16a | 1349 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1350 | if (flow_control) |
1351 | { | |
91bac16a | 1352 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1353 | #ifdef IXANY |
91bac16a | 1354 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1355 | #endif /* IXANY */ |
1356 | } | |
1357 | else | |
91bac16a JB |
1358 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1359 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1360 | on output */ | |
1361 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1362 | #ifdef CS8 |
1363 | if (meta_key) | |
1364 | { | |
91bac16a JB |
1365 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1366 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1367 | } |
1368 | #endif | |
91bac16a | 1369 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1370 | /* Set up C-g for both SIGQUIT and SIGINT. |
1371 | We don't know which we will get, but we handle both alike | |
1372 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1373 | tty.main.c_cc[VQUIT] = quit_char; |
1374 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1375 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1376 | #ifdef VSWTCH |
e2b40c23 | 1377 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1378 | of C-z */ |
86a5659e | 1379 | #endif /* VSWTCH */ |
c179a6d1 | 1380 | |
86a5659e | 1381 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1382 | #ifdef VSUSP |
e2b40c23 | 1383 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1384 | #endif /* VSUSP */ |
1385 | #ifdef V_DSUSP | |
e2b40c23 | 1386 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1387 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1388 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1389 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1390 | #endif /* VDSUSP */ | |
92c995de RS |
1391 | #ifdef VLNEXT |
1392 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1393 | #endif /* VLNEXT */ | |
1394 | #ifdef VREPRINT | |
1395 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1396 | #endif /* VREPRINT */ | |
1397 | #ifdef VWERASE | |
1398 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1399 | #endif /* VWERASE */ | |
1400 | #ifdef VDISCARD | |
1401 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1402 | #endif /* VDISCARD */ | |
c179a6d1 RS |
1403 | |
1404 | if (flow_control) | |
1405 | { | |
421dd92f | 1406 | #ifdef VSTART |
c179a6d1 | 1407 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1408 | #endif /* VSTART */ |
1409 | #ifdef VSTOP | |
c179a6d1 | 1410 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1411 | #endif /* VSTOP */ |
c179a6d1 RS |
1412 | } |
1413 | else | |
1414 | { | |
1415 | #ifdef VSTART | |
1416 | tty.main.c_cc[VSTART] = CDISABLE; | |
1417 | #endif /* VSTART */ | |
1418 | #ifdef VSTOP | |
1419 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1420 | #endif /* VSTOP */ | |
1421 | } | |
86a5659e | 1422 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1423 | |
441f6399 | 1424 | #ifdef SET_LINE_DISCIPLINE |
ea5a0917 | 1425 | /* Need to explicitly request TERMIODISC line discipline or |
441f6399 RS |
1426 | Ultrix's termios does not work correctly. */ |
1427 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1428 | #endif | |
86a5659e JB |
1429 | #ifdef AIX |
1430 | #ifndef IBMR2AIX | |
441f6399 | 1431 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1432 | tty.main.c_line = 0; |
1433 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1434 | #else |
91bac16a JB |
1435 | tty.main.c_cc[VSTRT] = 255; |
1436 | tty.main.c_cc[VSTOP] = 255; | |
1437 | tty.main.c_cc[VSUSP] = 255; | |
1438 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e | 1439 | #endif /* IBMR2AIX */ |
ac567c95 RS |
1440 | if (flow_control) |
1441 | { | |
1442 | #ifdef VSTART | |
1443 | tty.main.c_cc[VSTART] = '\021'; | |
1444 | #endif /* VSTART */ | |
1445 | #ifdef VSTOP | |
1446 | tty.main.c_cc[VSTOP] = '\023'; | |
1447 | #endif /* VSTOP */ | |
1448 | } | |
86a5659e JB |
1449 | /* Also, PTY overloads NUL and BREAK. |
1450 | don't ignore break, but don't signal either, so it looks like NUL. | |
1451 | This really serves a purpose only if running in an XTERM window | |
1452 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1453 | tty.main.c_iflag &= ~IGNBRK; |
1454 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1455 | #endif |
1456 | #else /* if not HAVE_TERMIO */ | |
1457 | #ifdef VMS | |
91bac16a | 1458 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1459 | if (meta_key) |
986ffb24 | 1460 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1461 | if (flow_control) |
91bac16a | 1462 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1463 | else |
91bac16a JB |
1464 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1465 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1466 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1467 | #ifndef DOS_NT |
a61e51f0 | 1468 | XSETINT (Vtty_erase_char, tty.main.sg_erase); |
91bac16a | 1469 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1470 | if (meta_key) |
91bac16a JB |
1471 | tty.main.sg_flags |= ANYP; |
1472 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1473 | #endif /* not DOS_NT */ |
86a5659e JB |
1474 | #endif /* not VMS (BSD, that is) */ |
1475 | #endif /* not HAVE_TERMIO */ | |
1476 | ||
91bac16a JB |
1477 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1478 | and turn off start and stop chars, etc. If not going to use | |
1479 | CBREAK mode, do this anyway so as to turn off local flow | |
1480 | control for user coming over network on 4.2; in this case, | |
1481 | only t_stopc and t_startc really matter. */ | |
1482 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1483 | #ifdef HAVE_TCHARS |
91bac16a JB |
1484 | /* Note: if not using CBREAK mode, it makes no difference how we |
1485 | set this */ | |
1486 | tty.tchars = new_tchars; | |
1487 | tty.tchars.t_intrc = quit_char; | |
1488 | if (flow_control) | |
1489 | { | |
1490 | tty.tchars.t_startc = '\021'; | |
1491 | tty.tchars.t_stopc = '\023'; | |
1492 | } | |
1493 | ||
91bac16a | 1494 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1495 | #ifdef ultrix |
1496 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1497 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1498 | tty.lmode &= ~LLITOUT; | |
1499 | #endif | |
91bac16a JB |
1500 | |
1501 | #ifdef BSD4_1 | |
1502 | lmode = tty.lmode; | |
1503 | #endif | |
1504 | ||
50b8cf60 | 1505 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1506 | #endif /* not HAVE_TERMIO */ |
1507 | ||
50b8cf60 | 1508 | #ifdef HAVE_LTCHARS |
91bac16a | 1509 | tty.ltchars = new_ltchars; |
50b8cf60 | 1510 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1511 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1512 | if (!term_initted) |
1513 | internal_terminal_init (); | |
207bdbdb RS |
1514 | dos_ttraw (); |
1515 | #endif | |
91bac16a JB |
1516 | |
1517 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1518 | |
1519 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1520 | we have an unlocked terminal at the start. */ |
91bac16a | 1521 | |
86a5659e | 1522 | #ifdef TCXONC |
64e971c3 | 1523 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1524 | #endif |
1525 | #ifndef APOLLO | |
1526 | #ifdef TIOCSTART | |
64e971c3 | 1527 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1528 | #endif |
1529 | #endif | |
1530 | ||
d228f207 | 1531 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1532 | #ifdef TCOON |
d228f207 RS |
1533 | if (!flow_control) tcflow (input_fd, TCOON); |
1534 | #endif | |
51417996 | 1535 | #endif |
d228f207 | 1536 | |
b97ab886 | 1537 | #ifdef AIXHFT |
86a5659e JB |
1538 | hft_init (); |
1539 | #ifdef IBMR2AIX | |
1540 | { | |
1541 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1542 | to be only LF. This is the way that is done. */ | |
1543 | struct termio tty; | |
1544 | ||
1545 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1546 | write (1, "\033[20l", 5); | |
1547 | } | |
1548 | #endif | |
b97ab886 | 1549 | #endif /* AIXHFT */ |
86a5659e | 1550 | |
86a5659e JB |
1551 | #ifdef VMS |
1552 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1553 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1554 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1555 | */ | |
1556 | queue_kbd_input (0); | |
1557 | #endif /* VMS */ | |
1558 | } | |
1559 | ||
1560 | #ifdef F_SETFL | |
46f2fdac | 1561 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1562 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1563 | if (interrupt_input |
1564 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1565 | { |
64e971c3 RS |
1566 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1567 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1568 | init_sigio (input_fd); |
86a5659e JB |
1569 | } |
1570 | #endif /* F_GETOWN */ | |
46f2fdac | 1571 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1572 | #endif /* F_SETFL */ |
1573 | ||
1574 | #ifdef BSD4_1 | |
1575 | if (interrupt_input) | |
23dab951 | 1576 | init_sigio (input_fd); |
86a5659e JB |
1577 | #endif |
1578 | ||
1579 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1580 | #undef _IOFBF | |
1581 | #endif | |
1582 | #ifdef _IOFBF | |
1583 | /* This symbol is defined on recent USG systems. | |
1584 | Someone says without this call USG won't really buffer the file | |
1585 | even with a call to setbuf. */ | |
074c438c | 1586 | setvbuf (stdout, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1587 | #else |
074c438c | 1588 | setbuf (stdout, (char *) _sobuf); |
86a5659e | 1589 | #endif |
23cafe43 | 1590 | #ifdef HAVE_WINDOW_SYSTEM |
c4295188 KS |
1591 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1592 | needs the initialization code below. */ | |
ad00c243 GV |
1593 | if (EQ (Vwindow_system, Qnil) |
1594 | #ifndef WINDOWSNT | |
1595 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1596 | hook, but still need the rest of the initialization code below. */ | |
1597 | && (! read_socket_hook) | |
1598 | #endif | |
1599 | ) | |
c4295188 | 1600 | #endif |
4b311aaf RS |
1601 | set_terminal_modes (); |
1602 | ||
045942b2 EZ |
1603 | if (!term_initted |
1604 | && FRAMEP (Vterminal_frame) | |
1605 | && FRAME_TERMCAP_P (XFRAME (Vterminal_frame))) | |
1606 | init_frame_faces (XFRAME (Vterminal_frame)); | |
1607 | ||
86a5659e JB |
1608 | if (term_initted && no_redraw_on_reenter) |
1609 | { | |
1610 | if (display_completed) | |
1611 | direct_output_forward_char (0); | |
1612 | } | |
1613 | else | |
1614 | { | |
0137dbf7 | 1615 | frame_garbaged = 1; |
0137dbf7 JB |
1616 | if (FRAMEP (Vterminal_frame)) |
1617 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e | 1618 | } |
91bac16a | 1619 | |
86a5659e JB |
1620 | term_initted = 1; |
1621 | } | |
1622 | ||
1623 | /* Return nonzero if safe to use tabs in output. | |
1624 | At the time this is called, init_sys_modes has not been done yet. */ | |
1625 | ||
dfcf069d | 1626 | int |
86a5659e JB |
1627 | tabs_safe_p () |
1628 | { | |
91bac16a JB |
1629 | struct emacs_tty tty; |
1630 | ||
1631 | EMACS_GET_TTY (input_fd, &tty); | |
1632 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1633 | } |
73d5358f | 1634 | \f |
86a5659e | 1635 | /* Get terminal size from system. |
73d5358f RS |
1636 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1637 | We store 0 if there's no valid information. */ | |
86a5659e | 1638 | |
08633194 | 1639 | void |
0137dbf7 | 1640 | get_frame_size (widthp, heightp) |
86a5659e JB |
1641 | int *widthp, *heightp; |
1642 | { | |
86a5659e | 1643 | |
86a5659e | 1644 | #ifdef TIOCGWINSZ |
91bac16a JB |
1645 | |
1646 | /* BSD-style. */ | |
86a5659e | 1647 | struct winsize size; |
91bac16a JB |
1648 | |
1649 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1650 | *widthp = *heightp = 0; | |
1651 | else | |
1652 | { | |
1653 | *widthp = size.ws_col; | |
1654 | *heightp = size.ws_row; | |
1655 | } | |
1656 | ||
1657 | #else | |
1658 | #ifdef TIOCGSIZE | |
1659 | ||
1660 | /* SunOS - style. */ | |
1661 | struct ttysize size; | |
1662 | ||
1663 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1664 | *widthp = *heightp = 0; | |
1665 | else | |
1666 | { | |
1667 | *widthp = size.ts_cols; | |
1668 | *heightp = size.ts_lines; | |
1669 | } | |
1670 | ||
1671 | #else | |
86a5659e | 1672 | #ifdef VMS |
91bac16a JB |
1673 | |
1674 | struct sensemode tty; | |
1675 | ||
1676 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1677 | &tty.class, 12, 0, 0, 0, 0); |
1678 | *widthp = tty.scr_wid; | |
1679 | *heightp = tty.scr_len; | |
91bac16a | 1680 | |
207bdbdb RS |
1681 | #else |
1682 | #ifdef MSDOS | |
1683 | *widthp = ScreenCols (); | |
1684 | *heightp = ScreenRows (); | |
86a5659e JB |
1685 | #else /* system doesn't know size */ |
1686 | *widthp = 0; | |
1687 | *heightp = 0; | |
207bdbdb | 1688 | #endif |
91bac16a JB |
1689 | |
1690 | #endif /* not VMS */ | |
1691 | #endif /* not SunOS-style */ | |
1692 | #endif /* not BSD-style */ | |
86a5659e | 1693 | } |
91bac16a | 1694 | |
73d5358f RS |
1695 | /* Set the logical window size associated with descriptor FD |
1696 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1697 | ||
1698 | int | |
1699 | set_window_size (fd, height, width) | |
1700 | int fd, height, width; | |
1701 | { | |
1702 | #ifdef TIOCSWINSZ | |
1703 | ||
1704 | /* BSD-style. */ | |
1705 | struct winsize size; | |
1706 | size.ws_row = height; | |
1707 | size.ws_col = width; | |
1708 | ||
1709 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1710 | return 0; /* error */ | |
1711 | else | |
1712 | return 1; | |
1713 | ||
1714 | #else | |
1715 | #ifdef TIOCSSIZE | |
1716 | ||
1717 | /* SunOS - style. */ | |
1718 | struct ttysize size; | |
1719 | size.ts_lines = height; | |
1720 | size.ts_cols = width; | |
1721 | ||
1722 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1723 | return 0; | |
1724 | else | |
1725 | return 1; | |
1726 | #else | |
1727 | return -1; | |
1728 | #endif /* not SunOS-style */ | |
1729 | #endif /* not BSD-style */ | |
1730 | } | |
1731 | ||
86a5659e | 1732 | \f |
91bac16a | 1733 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1734 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
08633194 | 1735 | void |
86a5659e JB |
1736 | reset_sys_modes () |
1737 | { | |
1738 | if (noninteractive) | |
1739 | { | |
1740 | fflush (stdout); | |
1741 | return; | |
1742 | } | |
1743 | if (!term_initted) | |
1744 | return; | |
23cafe43 | 1745 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1746 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1747 | needs the clean-up code below. */ | |
ad00c243 GV |
1748 | if (!EQ (Vwindow_system, Qnil) |
1749 | #ifndef WINDOWSNT | |
1750 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1751 | hook, but still need the rest of the clean-up code below. */ | |
1752 | || read_socket_hook | |
1753 | #endif | |
1754 | ) | |
86a5659e | 1755 | return; |
87485d6f | 1756 | #endif |
0137dbf7 JB |
1757 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1758 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1759 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1760 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
b97ab886 | 1761 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e JB |
1762 | { |
1763 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1764 | do the LF only. Now, we need to reset it. */ | |
1765 | struct termio tty; | |
1766 | ||
1767 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1768 | write (1, "\033[20h", 5); | |
1769 | } | |
1770 | #endif | |
1771 | ||
1772 | reset_terminal_modes (); | |
1773 | fflush (stdout); | |
2a633456 | 1774 | #ifdef BSD_SYSTEM |
86a5659e JB |
1775 | #ifndef BSD4_1 |
1776 | /* Avoid possible loss of output when changing terminal modes. */ | |
1777 | fsync (fileno (stdout)); | |
1778 | #endif | |
1779 | #endif | |
91bac16a | 1780 | |
86a5659e | 1781 | #ifdef F_SETFL |
46f2fdac | 1782 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1783 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1784 | if (interrupt_input) |
1785 | { | |
1786 | reset_sigio (); | |
64e971c3 | 1787 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1788 | } |
1789 | #endif /* F_SETOWN */ | |
46f2fdac | 1790 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1791 | #ifdef O_NDELAY |
1792 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1793 | #endif | |
86a5659e JB |
1794 | #endif /* F_SETFL */ |
1795 | #ifdef BSD4_1 | |
1796 | if (interrupt_input) | |
1797 | reset_sigio (); | |
1798 | #endif /* BSD4_1 */ | |
91bac16a | 1799 | |
7e32a4fb KH |
1800 | if (old_tty_valid) |
1801 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) | |
1802 | ; | |
86a5659e | 1803 | |
207bdbdb RS |
1804 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1805 | dos_ttcooked (); | |
1806 | #endif | |
1807 | ||
441f6399 RS |
1808 | #ifdef SET_LINE_DISCIPLINE |
1809 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1810 | A different old line discipline is therefore not restored, yet. | |
1811 | Restore the old line discipline by hand. */ | |
1812 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1813 | #endif | |
1814 | ||
b97ab886 | 1815 | #ifdef AIXHFT |
86a5659e JB |
1816 | hft_reset (); |
1817 | #endif | |
9ae8f997 | 1818 | |
0ba73609 | 1819 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1820 | widen_foreground_group (); |
1821 | #endif | |
86a5659e JB |
1822 | } |
1823 | \f | |
1824 | #ifdef HAVE_PTYS | |
1825 | ||
1826 | /* Set up the proper status flags for use of a pty. */ | |
1827 | ||
08633194 | 1828 | void |
86a5659e JB |
1829 | setup_pty (fd) |
1830 | int fd; | |
1831 | { | |
1832 | /* I'm told that TOICREMOTE does not mean control chars | |
1833 | "can't be sent" but rather that they don't have | |
1834 | input-editing or signaling effects. | |
1835 | That should be good, because we have other ways | |
1836 | to do those things in Emacs. | |
1837 | However, telnet mode seems not to work on 4.2. | |
1838 | So TIOCREMOTE is turned off now. */ | |
1839 | ||
1840 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1841 | will hang. In particular, the "timeout" feature (which | |
1842 | causes a read to return if there is no data available) | |
1843 | does this. Also it is known that telnet mode will hang | |
1844 | in such a way that Emacs must be stopped (perhaps this | |
1845 | is the same problem). | |
1846 | ||
1847 | If TIOCREMOTE is turned off, then there is a bug in | |
1848 | hp-ux which sometimes loses data. Apparently the | |
1849 | code which blocks the master process when the internal | |
1850 | buffer fills up does not work. Other than this, | |
1851 | though, everything else seems to work fine. | |
1852 | ||
1853 | Since the latter lossage is more benign, we may as well | |
1854 | lose that way. -- cph */ | |
1855 | #ifdef FIONBIO | |
1856 | #ifdef SYSV_PTYS | |
1857 | { | |
1858 | int on = 1; | |
1859 | ioctl (fd, FIONBIO, &on); | |
1860 | } | |
1861 | #endif | |
1862 | #endif | |
1863 | #ifdef IBMRTAIX | |
1864 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1865 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1866 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1867 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1868 | /* change this behavior, but I'm not going to hold my breath. */ | |
1869 | signal (SIGHUP, SIG_IGN); | |
1870 | #endif | |
1871 | } | |
1872 | #endif /* HAVE_PTYS */ | |
1873 | \f | |
1874 | #ifdef VMS | |
1875 | ||
1876 | /* Assigning an input channel is done at the start of Emacs execution. | |
1877 | This is called each time Emacs is resumed, also, but does nothing | |
1878 | because input_chain is no longer zero. */ | |
1879 | ||
dfcf069d | 1880 | void |
86a5659e JB |
1881 | init_vms_input () |
1882 | { | |
1883 | int status; | |
1884 | ||
91bac16a | 1885 | if (input_fd == 0) |
86a5659e | 1886 | { |
91bac16a | 1887 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1888 | if (! (status & 1)) |
1889 | LIB$STOP (status); | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | /* Deassigning the input channel is done before exiting. */ | |
1894 | ||
dfcf069d | 1895 | void |
86a5659e JB |
1896 | stop_vms_input () |
1897 | { | |
91bac16a | 1898 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1899 | } |
1900 | ||
1901 | short input_buffer; | |
1902 | ||
1903 | /* Request reading one character into the keyboard buffer. | |
1904 | This is done as soon as the buffer becomes empty. */ | |
1905 | ||
dfcf069d | 1906 | void |
86a5659e JB |
1907 | queue_kbd_input () |
1908 | { | |
1909 | int status; | |
210b2b4f JB |
1910 | extern kbd_input_ast (); |
1911 | ||
86a5659e JB |
1912 | waiting_for_ast = 0; |
1913 | stop_input = 0; | |
91bac16a | 1914 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1915 | &input_iosb, kbd_input_ast, 1, |
1916 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1917 | } | |
1918 | ||
1919 | int input_count; | |
1920 | ||
1921 | /* Ast routine that is called when keyboard input comes in | |
1922 | in accord with the SYS$QIO above. */ | |
1923 | ||
dfcf069d | 1924 | void |
86a5659e JB |
1925 | kbd_input_ast () |
1926 | { | |
1927 | register int c = -1; | |
1928 | int old_errno = errno; | |
ffd56f97 | 1929 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1930 | |
1931 | if (waiting_for_ast) | |
1932 | SYS$SETEF (input_ef); | |
1933 | waiting_for_ast = 0; | |
1934 | input_count++; | |
1935 | #ifdef ASTDEBUG | |
1936 | if (input_count == 25) | |
1937 | exit (1); | |
1938 | printf ("Ast # %d,", input_count); | |
1939 | printf (" iosb = %x, %x, %x, %x", | |
1940 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1941 | input_iosb.term); | |
1942 | #endif | |
1943 | if (input_iosb.offset) | |
1944 | { | |
1945 | c = input_buffer; | |
1946 | #ifdef ASTDEBUG | |
1947 | printf (", char = 0%o", c); | |
1948 | #endif | |
1949 | } | |
1950 | #ifdef ASTDEBUG | |
1951 | printf ("\n"); | |
1952 | fflush (stdout); | |
1953 | sleep (1); | |
1954 | #endif | |
1955 | if (! stop_input) | |
1956 | queue_kbd_input (); | |
1957 | if (c >= 0) | |
1958 | { | |
1959 | struct input_event e; | |
1960 | e.kind = ascii_keystroke; | |
c81d47b4 | 1961 | XSETINT (e.code, c); |
c81d47b4 | 1962 | XSETFRAME (e.frame_or_window, selected_frame); |
86a5659e JB |
1963 | kbd_buffer_store_event (&e); |
1964 | } | |
ffd56f97 JB |
1965 | if (input_available_clear_time) |
1966 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1967 | errno = old_errno; |
1968 | } | |
1969 | ||
1970 | /* Wait until there is something in kbd_buffer. */ | |
1971 | ||
dfcf069d | 1972 | void |
86a5659e JB |
1973 | wait_for_kbd_input () |
1974 | { | |
1975 | extern int have_process_input, process_exited; | |
1976 | ||
1977 | /* If already something, avoid doing system calls. */ | |
1978 | if (detect_input_pending ()) | |
1979 | { | |
1980 | return; | |
1981 | } | |
1982 | /* Clear a flag, and tell ast routine above to set it. */ | |
1983 | SYS$CLREF (input_ef); | |
1984 | waiting_for_ast = 1; | |
1985 | /* Check for timing error: ast happened while we were doing that. */ | |
1986 | if (!detect_input_pending ()) | |
1987 | { | |
1988 | /* No timing error: wait for flag to be set. */ | |
1989 | set_waiting_for_input (0); | |
1990 | SYS$WFLOR (input_ef, input_eflist); | |
1991 | clear_waiting_for_input (0); | |
1992 | if (!detect_input_pending ()) | |
1993 | /* Check for subprocess input availability */ | |
1994 | { | |
1995 | int dsp = have_process_input || process_exited; | |
1996 | ||
1997 | SYS$CLREF (process_ef); | |
1998 | if (have_process_input) | |
1999 | process_command_input (); | |
2000 | if (process_exited) | |
2001 | process_exit (); | |
2002 | if (dsp) | |
2003 | { | |
2004 | update_mode_lines++; | |
56b18525 | 2005 | prepare_menu_bars (); |
86a5659e JB |
2006 | redisplay_preserve_echo_area (); |
2007 | } | |
2008 | } | |
2009 | } | |
2010 | waiting_for_ast = 0; | |
2011 | } | |
2012 | ||
2013 | /* Get rid of any pending QIO, when we are about to suspend | |
2014 | or when we want to throw away pending input. | |
2015 | We wait for a positive sign that the AST routine has run | |
2016 | and therefore there is no I/O request queued when we return. | |
2017 | SYS$SETAST is used to avoid a timing error. */ | |
2018 | ||
dfcf069d | 2019 | void |
86a5659e JB |
2020 | end_kbd_input () |
2021 | { | |
2022 | #ifdef ASTDEBUG | |
2023 | printf ("At end_kbd_input.\n"); | |
2024 | fflush (stdout); | |
2025 | sleep (1); | |
2026 | #endif | |
2027 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
2028 | { | |
91bac16a | 2029 | SYS$CANCEL (input_fd); |
86a5659e JB |
2030 | return; |
2031 | } | |
2032 | ||
2033 | SYS$SETAST (0); | |
2034 | /* Clear a flag, and tell ast routine above to set it. */ | |
2035 | SYS$CLREF (input_ef); | |
2036 | waiting_for_ast = 1; | |
2037 | stop_input = 1; | |
91bac16a | 2038 | SYS$CANCEL (input_fd); |
86a5659e JB |
2039 | SYS$SETAST (1); |
2040 | SYS$WAITFR (input_ef); | |
2041 | waiting_for_ast = 0; | |
2042 | } | |
2043 | ||
2044 | /* Wait for either input available or time interval expiry. */ | |
2045 | ||
dfcf069d | 2046 | void |
86a5659e JB |
2047 | input_wait_timeout (timeval) |
2048 | int timeval; /* Time to wait, in seconds */ | |
2049 | { | |
2050 | int time [2]; | |
2051 | static int zero = 0; | |
2052 | static int large = -10000000; | |
2053 | ||
2054 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2055 | ||
2056 | /* If already something, avoid doing system calls. */ | |
2057 | if (detect_input_pending ()) | |
2058 | { | |
2059 | return; | |
2060 | } | |
2061 | /* Clear a flag, and tell ast routine above to set it. */ | |
2062 | SYS$CLREF (input_ef); | |
2063 | waiting_for_ast = 1; | |
2064 | /* Check for timing error: ast happened while we were doing that. */ | |
2065 | if (!detect_input_pending ()) | |
2066 | { | |
2067 | /* No timing error: wait for flag to be set. */ | |
2068 | SYS$CANTIM (1, 0); | |
2069 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2070 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2071 | } | |
2072 | waiting_for_ast = 0; | |
2073 | } | |
2074 | ||
2075 | /* The standard `sleep' routine works some other way | |
2076 | and it stops working if you have ever quit out of it. | |
2077 | This one continues to work. */ | |
2078 | ||
2079 | sys_sleep (timeval) | |
2080 | int timeval; | |
2081 | { | |
2082 | int time [2]; | |
2083 | static int zero = 0; | |
2084 | static int large = -10000000; | |
2085 | ||
2086 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2087 | ||
2088 | SYS$CANTIM (1, 0); | |
2089 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2090 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2091 | } | |
2092 | ||
08633194 | 2093 | void |
23dab951 RS |
2094 | init_sigio (fd) |
2095 | int fd; | |
86a5659e JB |
2096 | { |
2097 | request_sigio (); | |
2098 | } | |
2099 | ||
2100 | reset_sigio () | |
2101 | { | |
2102 | unrequest_sigio (); | |
2103 | } | |
2104 | ||
08633194 | 2105 | void |
86a5659e JB |
2106 | request_sigio () |
2107 | { | |
2108 | croak ("request sigio"); | |
2109 | } | |
2110 | ||
08633194 | 2111 | void |
86a5659e JB |
2112 | unrequest_sigio () |
2113 | { | |
2114 | croak ("unrequest sigio"); | |
2115 | } | |
2116 | ||
2117 | #endif /* VMS */ | |
2118 | \f | |
2119 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2120 | #ifndef CANNOT_DUMP | |
2121 | #define NEED_STARTS | |
2122 | #endif | |
2123 | ||
2124 | #ifndef SYSTEM_MALLOC | |
2125 | #ifndef NEED_STARTS | |
2126 | #define NEED_STARTS | |
2127 | #endif | |
2128 | #endif | |
2129 | ||
2130 | #ifdef NEED_STARTS | |
2131 | /* Some systems that cannot dump also cannot implement these. */ | |
2132 | ||
2133 | /* | |
2134 | * Return the address of the start of the text segment prior to | |
2135 | * doing an unexec. After unexec the return value is undefined. | |
2136 | * See crt0.c for further explanation and _start. | |
2137 | * | |
2138 | */ | |
2139 | ||
260fe597 | 2140 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2141 | char * |
2142 | start_of_text () | |
2143 | { | |
2144 | #ifdef TEXT_START | |
2145 | return ((char *) TEXT_START); | |
2146 | #else | |
2147 | #ifdef GOULD | |
2148 | extern csrt (); | |
2149 | return ((char *) csrt); | |
2150 | #else /* not GOULD */ | |
2151 | extern int _start (); | |
2152 | return ((char *) _start); | |
2153 | #endif /* GOULD */ | |
2154 | #endif /* TEXT_START */ | |
2155 | } | |
260fe597 | 2156 | #endif /* not HAVE_TEXT_START */ |
86a5659e JB |
2157 | |
2158 | /* | |
2159 | * Return the address of the start of the data segment prior to | |
2160 | * doing an unexec. After unexec the return value is undefined. | |
2161 | * See crt0.c for further information and definition of data_start. | |
2162 | * | |
2163 | * Apparently, on BSD systems this is etext at startup. On | |
2164 | * USG systems (swapping) this is highly mmu dependent and | |
2165 | * is also dependent on whether or not the program is running | |
2166 | * with shared text. Generally there is a (possibly large) | |
2167 | * gap between end of text and start of data with shared text. | |
2168 | * | |
2169 | * On Uniplus+ systems with shared text, data starts at a | |
2170 | * fixed address. Each port (from a given oem) is generally | |
2171 | * different, and the specific value of the start of data can | |
2172 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2173 | * however the method outlined in crt0.c seems to be more portable. | |
2174 | * | |
2175 | * Probably what will have to happen when a USG unexec is available, | |
2176 | * at least on UniPlus, is temacs will have to be made unshared so | |
2177 | * that text and data are contiguous. Then once loadup is complete, | |
2178 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2179 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2180 | * will be patched by unexec to the correct value. |
2181 | * | |
2182 | */ | |
2183 | ||
2184 | char * | |
2185 | start_of_data () | |
2186 | { | |
2187 | #ifdef DATA_START | |
2188 | return ((char *) DATA_START); | |
6c65530f JB |
2189 | #else |
2190 | #ifdef ORDINARY_LINK | |
2191 | /* | |
2192 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2193 | * data_start isn't defined. We take the address of environ, which | |
2194 | * is known to live at or near the start of the system crt0.c, and | |
2195 | * we don't sweat the handful of bytes that might lose. | |
2196 | */ | |
2197 | extern char **environ; | |
2198 | ||
2199 | return((char *) &environ); | |
86a5659e JB |
2200 | #else |
2201 | extern int data_start; | |
2202 | return ((char *) &data_start); | |
6c65530f JB |
2203 | #endif /* ORDINARY_LINK */ |
2204 | #endif /* DATA_START */ | |
86a5659e JB |
2205 | } |
2206 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
2207 | ||
2208 | #ifndef CANNOT_DUMP | |
2209 | /* Some systems that cannot dump also cannot implement these. */ | |
2210 | ||
2211 | /* | |
2212 | * Return the address of the end of the text segment prior to | |
2213 | * doing an unexec. After unexec the return value is undefined. | |
2214 | */ | |
2215 | ||
2216 | char * | |
2217 | end_of_text () | |
2218 | { | |
2219 | #ifdef TEXT_END | |
2220 | return ((char *) TEXT_END); | |
2221 | #else | |
2222 | extern int etext; | |
2223 | return ((char *) &etext); | |
2224 | #endif | |
2225 | } | |
2226 | ||
2227 | /* | |
2228 | * Return the address of the end of the data segment prior to | |
2229 | * doing an unexec. After unexec the return value is undefined. | |
2230 | */ | |
2231 | ||
2232 | char * | |
2233 | end_of_data () | |
2234 | { | |
2235 | #ifdef DATA_END | |
2236 | return ((char *) DATA_END); | |
2237 | #else | |
2238 | extern int edata; | |
2239 | return ((char *) &edata); | |
2240 | #endif | |
2241 | } | |
2242 | ||
2243 | #endif /* not CANNOT_DUMP */ | |
2244 | \f | |
c0c86835 KH |
2245 | /* init_system_name sets up the string for the Lisp function |
2246 | system-name to return. */ | |
86a5659e JB |
2247 | |
2248 | #ifdef BSD4_1 | |
2249 | #include <whoami.h> | |
2250 | #endif | |
2251 | ||
c0c86835 | 2252 | extern Lisp_Object Vsystem_name; |
86a5659e | 2253 | |
f8a80313 | 2254 | #ifndef BSD4_1 |
f8a80313 RS |
2255 | #ifndef VMS |
2256 | #ifdef HAVE_SOCKETS | |
2257 | #include <sys/socket.h> | |
2258 | #include <netdb.h> | |
2259 | #endif /* HAVE_SOCKETS */ | |
2260 | #endif /* not VMS */ | |
f8a80313 RS |
2261 | #endif /* not BSD4_1 */ |
2262 | ||
c0c86835 KH |
2263 | void |
2264 | init_system_name () | |
86a5659e | 2265 | { |
86a5659e | 2266 | #ifdef BSD4_1 |
c0c86835 | 2267 | Vsystem_name = build_string (sysname); |
67004ffb | 2268 | #else |
67004ffb | 2269 | #ifdef VMS |
c0c86835 KH |
2270 | char *sp, *end; |
2271 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2272 | Vsystem_name = build_string ("vax-vms"); | |
2273 | else if ((end = index (sp, ':')) == 0) | |
2274 | Vsystem_name = build_string (sp); | |
2275 | else | |
2276 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2277 | #else |
210b2b4f | 2278 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2279 | struct utsname uts; |
2280 | uname (&uts); | |
2281 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2282 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2283 | unsigned int hostname_size = 256; |
c0c86835 KH |
2284 | char *hostname = (char *) alloca (hostname_size); |
2285 | ||
2286 | /* Try to get the host name; if the buffer is too short, try | |
2287 | again. Apparently, the only indication gethostname gives of | |
2288 | whether the buffer was large enough is the presence or absence | |
2289 | of a '\0' in the string. Eech. */ | |
2290 | for (;;) | |
2291 | { | |
2292 | gethostname (hostname, hostname_size - 1); | |
2293 | hostname[hostname_size - 1] = '\0'; | |
2294 | ||
2295 | /* Was the buffer large enough for the '\0'? */ | |
2296 | if (strlen (hostname) < hostname_size - 1) | |
2297 | break; | |
2298 | ||
2299 | hostname_size <<= 1; | |
2300 | hostname = (char *) alloca (hostname_size); | |
2301 | } | |
67004ffb | 2302 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2303 | /* Turn the hostname into the official, fully-qualified hostname. |
2304 | Don't do this if we're going to dump; this can confuse system | |
2305 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2306 | #ifndef CANNOT_DUMP |
c0c86835 | 2307 | if (initialized) |
67004ffb | 2308 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2309 | if (! index (hostname, '.')) |
2310 | { | |
2311 | struct hostent *hp; | |
2312 | int count; | |
2313 | for (count = 0;; count++) | |
2314 | { | |
e24f1d55 | 2315 | #ifdef TRY_AGAIN |
960d894c | 2316 | h_errno = 0; |
e24f1d55 | 2317 | #endif |
960d894c | 2318 | hp = gethostbyname (hostname); |
efa04277 | 2319 | #ifdef TRY_AGAIN |
960d894c KH |
2320 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2321 | #endif | |
2322 | break; | |
2323 | if (count >= 5) | |
2324 | break; | |
2325 | Fsleep_for (make_number (1), Qnil); | |
2326 | } | |
2327 | if (hp) | |
2328 | { | |
2329 | char *fqdn = (char *) hp->h_name; | |
2330 | char *p; | |
2331 | ||
2332 | if (!index (fqdn, '.')) | |
2333 | { | |
2334 | /* We still don't have a fully qualified domain name. | |
2335 | Try to find one in the list of alternate names */ | |
2336 | char **alias = hp->h_aliases; | |
2337 | while (*alias && !index (*alias, '.')) | |
2338 | alias++; | |
2339 | if (*alias) | |
2340 | fqdn = *alias; | |
2341 | } | |
2342 | hostname = fqdn; | |
ab1649fe | 2343 | #if 0 |
960d894c KH |
2344 | /* Convert the host name to lower case. */ |
2345 | /* Using ctype.h here would introduce a possible locale | |
2346 | dependence that is probably wrong for hostnames. */ | |
2347 | p = hostname; | |
2348 | while (*p) | |
2349 | { | |
2350 | if (*p >= 'A' && *p <= 'Z') | |
2351 | *p += 'a' - 'A'; | |
2352 | p++; | |
2353 | } | |
2354 | #endif | |
2355 | } | |
2356 | } | |
67004ffb | 2357 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2358 | /* We used to try using getdomainname here, |
2359 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2360 | getdomainname gets the NIS/YP domain which often is not the same |
2361 | as in Internet domain name. */ | |
6250a9db KH |
2362 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2363 | correct Internet domain. */ | |
0b93aa53 | 2364 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2365 | if (! index (hostname, '.')) |
2366 | { | |
2367 | /* The hostname is not fully qualified. Append the domain name. */ | |
2368 | ||
2369 | int hostlen = strlen (hostname); | |
2370 | int domain_size = 256; | |
2371 | ||
2372 | for (;;) | |
2373 | { | |
825e7e55 RS |
2374 | char *domain = (char *) alloca (domain_size + 1); |
2375 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2376 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2377 | if (sys_domain_size <= 0) | |
2378 | break; | |
2379 | if (domain_size < sys_domain_size) | |
2380 | { | |
2381 | domain_size = sys_domain_size; | |
2382 | continue; | |
2383 | } | |
b05af5d3 | 2384 | strcpy (fqdn, hostname); |
825e7e55 RS |
2385 | if (domain[0] == '.') |
2386 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2387 | else if (domain[0] != 0) |
825e7e55 RS |
2388 | { |
2389 | fqdn[hostlen] = '.'; | |
2390 | strcpy (fqdn + hostlen + 1, domain); | |
2391 | } | |
b05af5d3 PE |
2392 | hostname = fqdn; |
2393 | break; | |
2394 | } | |
2395 | } | |
0b93aa53 | 2396 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2397 | #endif /* 0 */ |
c0c86835 | 2398 | Vsystem_name = build_string (hostname); |
67004ffb | 2399 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2400 | #endif /* VMS */ |
67004ffb | 2401 | #endif /* BSD4_1 */ |
c0c86835 KH |
2402 | { |
2403 | unsigned char *p; | |
2404 | for (p = XSTRING (Vsystem_name)->data; *p; p++) | |
2405 | if (*p == ' ' || *p == '\t') | |
2406 | *p = '-'; | |
2407 | } | |
67004ffb | 2408 | } |
86a5659e | 2409 | \f |
7964ba9e | 2410 | #ifndef MSDOS |
86a5659e | 2411 | #ifndef VMS |
86d1f23a | 2412 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2413 | |
86d1f23a KH |
2414 | #include "sysselect.h" |
2415 | #undef select | |
2416 | ||
2417 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2418 | /* Cause explanatory error message at compile time, |
2419 | since the select emulation is not good enough for X. */ | |
2420 | int *x = &x_windows_lose_if_no_select_system_call; | |
2421 | #endif | |
2422 | ||
2423 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2424 | * Only checks read descriptors. | |
2425 | */ | |
2426 | /* How long to wait between checking fds in select */ | |
2427 | #define SELECT_PAUSE 1 | |
2428 | int select_alarmed; | |
2429 | ||
2430 | /* For longjmp'ing back to read_input_waiting. */ | |
2431 | ||
2432 | jmp_buf read_alarm_throw; | |
2433 | ||
2434 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2435 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2436 | ||
2437 | int read_alarm_should_throw; | |
2438 | ||
2439 | SIGTYPE | |
2440 | select_alarm () | |
2441 | { | |
2442 | select_alarmed = 1; | |
2443 | #ifdef BSD4_1 | |
2444 | sigrelse (SIGALRM); | |
2445 | #else /* not BSD4_1 */ | |
2446 | signal (SIGALRM, SIG_IGN); | |
2447 | #endif /* not BSD4_1 */ | |
2448 | if (read_alarm_should_throw) | |
2449 | longjmp (read_alarm_throw, 1); | |
2450 | } | |
2451 | ||
fe03522b | 2452 | #ifndef WINDOWSNT |
86a5659e JB |
2453 | /* Only rfds are checked. */ |
2454 | int | |
86d1f23a | 2455 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2456 | int nfds; |
86d1f23a KH |
2457 | SELECT_TYPE *rfds, *wfds, *efds; |
2458 | EMACS_TIME *timeout; | |
86a5659e | 2459 | { |
86d1f23a KH |
2460 | int ravail = 0, old_alarm; |
2461 | SELECT_TYPE orfds; | |
2462 | int timeoutval; | |
2463 | int *local_timeout; | |
86a5659e JB |
2464 | extern int proc_buffered_char[]; |
2465 | #ifndef subprocesses | |
2466 | int process_tick = 0, update_tick = 0; | |
2467 | #else | |
2468 | extern int process_tick, update_tick; | |
2469 | #endif | |
2470 | SIGTYPE (*old_trap) (); | |
2471 | unsigned char buf; | |
2472 | ||
86d1f23a KH |
2473 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2474 | /* If we're using X, then the native select will work; we only need the | |
2475 | emulation for non-X usage. */ | |
2476 | if (!NILP (Vwindow_system)) | |
2477 | return select (nfds, rfds, wfds, efds, timeout); | |
2478 | #endif | |
2479 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2480 | local_timeout = &timeoutval; | |
2481 | FD_ZERO (&orfds); | |
86a5659e JB |
2482 | if (rfds) |
2483 | { | |
2484 | orfds = *rfds; | |
86d1f23a | 2485 | FD_ZERO (rfds); |
86a5659e JB |
2486 | } |
2487 | if (wfds) | |
86d1f23a | 2488 | FD_ZERO (wfds); |
86a5659e | 2489 | if (efds) |
86d1f23a | 2490 | FD_ZERO (efds); |
86a5659e JB |
2491 | |
2492 | /* If we are looking only for the terminal, with no timeout, | |
2493 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2494 | if (*local_timeout == 100000 && process_tick == update_tick |
2495 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2496 | { |
86d1f23a KH |
2497 | int fd; |
2498 | for (fd = 1; fd < nfds; ++fd) | |
2499 | if (FD_ISSET (fd, &orfds)) | |
2500 | goto hardway; | |
86a5659e JB |
2501 | if (! detect_input_pending ()) |
2502 | read_input_waiting (); | |
86d1f23a | 2503 | FD_SET (0, rfds); |
86a5659e JB |
2504 | return 1; |
2505 | } | |
2506 | ||
86d1f23a | 2507 | hardway: |
86a5659e JB |
2508 | /* Once a second, till the timer expires, check all the flagged read |
2509 | * descriptors to see if any input is available. If there is some then | |
2510 | * set the corresponding bit in the return copy of rfds. | |
2511 | */ | |
2512 | while (1) | |
2513 | { | |
86d1f23a | 2514 | register int to_check, fd; |
86a5659e JB |
2515 | |
2516 | if (rfds) | |
2517 | { | |
86d1f23a | 2518 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2519 | { |
86d1f23a | 2520 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2521 | { |
2522 | int avail = 0, status = 0; | |
2523 | ||
86d1f23a | 2524 | if (fd == 0) |
86a5659e JB |
2525 | avail = detect_input_pending (); /* Special keyboard handler */ |
2526 | else | |
2527 | { | |
2528 | #ifdef FIONREAD | |
2529 | status = ioctl (fd, FIONREAD, &avail); | |
2530 | #else /* no FIONREAD */ | |
2531 | /* Hoping it will return -1 if nothing available | |
2532 | or 0 if all 0 chars requested are read. */ | |
2533 | if (proc_buffered_char[fd] >= 0) | |
2534 | avail = 1; | |
2535 | else | |
2536 | { | |
2537 | avail = read (fd, &buf, 1); | |
2538 | if (avail > 0) | |
2539 | proc_buffered_char[fd] = buf; | |
2540 | } | |
2541 | #endif /* no FIONREAD */ | |
2542 | } | |
2543 | if (status >= 0 && avail > 0) | |
2544 | { | |
86d1f23a | 2545 | FD_SET (fd, rfds); |
86a5659e JB |
2546 | ravail++; |
2547 | } | |
2548 | } | |
2549 | } | |
2550 | } | |
2551 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2552 | break; | |
2553 | old_alarm = alarm (0); | |
34567704 | 2554 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2555 | select_alarmed = 0; |
2556 | alarm (SELECT_PAUSE); | |
2557 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2558 | while (select_alarmed == 0 && *local_timeout != 0 | |
2559 | && process_tick == update_tick) | |
2560 | { | |
2561 | /* If we are interested in terminal input, | |
2562 | wait by reading the terminal. | |
2563 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2564 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2565 | { |
2566 | read_input_waiting (); | |
2567 | if (detect_input_pending ()) | |
2568 | select_alarmed = 1; | |
2569 | } | |
2570 | else | |
2571 | pause (); | |
2572 | } | |
2573 | (*local_timeout) -= SELECT_PAUSE; | |
2574 | /* Reset the old alarm if there was one */ | |
2575 | alarm (0); | |
2576 | signal (SIGALRM, old_trap); | |
2577 | if (old_alarm != 0) | |
2578 | { | |
2579 | /* Reset or forge an interrupt for the original handler. */ | |
2580 | old_alarm -= SELECT_PAUSE; | |
2581 | if (old_alarm <= 0) | |
2582 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2583 | else | |
2584 | alarm (old_alarm); | |
2585 | } | |
2586 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2587 | break; | |
2588 | } | |
2589 | return ravail; | |
2590 | } | |
fe03522b | 2591 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2592 | |
2593 | /* Read keyboard input into the standard buffer, | |
2594 | waiting for at least one character. */ | |
2595 | ||
23cafe43 GV |
2596 | /* Make all keyboard buffers much bigger when using a window system. */ |
2597 | #ifdef HAVE_WINDOW_SYSTEM | |
86a5659e JB |
2598 | #define BUFFER_SIZE_FACTOR 16 |
2599 | #else | |
2600 | #define BUFFER_SIZE_FACTOR 1 | |
2601 | #endif | |
2602 | ||
dfcf069d | 2603 | void |
86a5659e JB |
2604 | read_input_waiting () |
2605 | { | |
86a5659e | 2606 | struct input_event e; |
34567704 JB |
2607 | int nread, i; |
2608 | extern int quit_char; | |
86a5659e JB |
2609 | |
2610 | if (read_socket_hook) | |
2611 | { | |
f4a7e5bd RS |
2612 | struct input_event buf[256]; |
2613 | ||
86a5659e JB |
2614 | read_alarm_should_throw = 0; |
2615 | if (! setjmp (read_alarm_throw)) | |
599c6c17 | 2616 | nread = (*read_socket_hook) (0, buf, 256, 1); |
86a5659e JB |
2617 | else |
2618 | nread = -1; | |
f4a7e5bd RS |
2619 | |
2620 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2621 | for (i = 0; i < nread; i++) | |
2622 | { | |
2623 | kbd_buffer_store_event (&buf[i]); | |
2624 | /* Don't look at input that follows a C-g too closely. | |
2625 | This reduces lossage due to autorepeat on C-g. */ | |
2626 | if (buf[i].kind == ascii_keystroke | |
30bef8ec | 2627 | && buf[i].code == quit_char) |
f4a7e5bd RS |
2628 | break; |
2629 | } | |
86a5659e JB |
2630 | } |
2631 | else | |
86a5659e | 2632 | { |
f4a7e5bd RS |
2633 | char buf[3]; |
2634 | nread = read (fileno (stdin), buf, 1); | |
2635 | ||
2636 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2637 | e.kind = ascii_keystroke; | |
bd513d9d | 2638 | XSETFRAME (e.frame_or_window, selected_frame); |
f4a7e5bd RS |
2639 | e.modifiers = 0; |
2640 | for (i = 0; i < nread; i++) | |
a00d5589 | 2641 | { |
f4a7e5bd RS |
2642 | /* Convert chars > 0177 to meta events if desired. |
2643 | We do this under the same conditions that read_avail_input does. */ | |
2644 | if (read_socket_hook == 0) | |
2645 | { | |
2646 | /* If the user says she has a meta key, then believe her. */ | |
2647 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2648 | e.modifiers = meta_modifier; | |
2649 | if (meta_key != 2) | |
2650 | buf[i] &= ~0x80; | |
2651 | } | |
b95520f5 | 2652 | |
c81d47b4 | 2653 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2654 | kbd_buffer_store_event (&e); |
2655 | /* Don't look at input that follows a C-g too closely. | |
2656 | This reduces lossage due to autorepeat on C-g. */ | |
2657 | if (buf[i] == quit_char) | |
2658 | break; | |
2659 | } | |
86a5659e JB |
2660 | } |
2661 | } | |
2662 | ||
2663 | #endif /* not HAVE_SELECT */ | |
2664 | #endif /* not VMS */ | |
7964ba9e | 2665 | #endif /* not MSDOS */ |
86a5659e JB |
2666 | \f |
2667 | #ifdef BSD4_1 | |
86a5659e JB |
2668 | /* |
2669 | * Partially emulate 4.2 open call. | |
2670 | * open is defined as this in 4.1. | |
2671 | * | |
2672 | * - added by Michael Bloom @ Citicorp/TTI | |
2673 | * | |
2674 | */ | |
2675 | ||
2676 | int | |
2677 | sys_open (path, oflag, mode) | |
2678 | char *path; | |
2679 | int oflag, mode; | |
2680 | { | |
2681 | if (oflag & O_CREAT) | |
2682 | return creat (path, mode); | |
2683 | else | |
2684 | return open (path, oflag); | |
2685 | } | |
2686 | ||
08633194 | 2687 | void |
23dab951 RS |
2688 | init_sigio (fd) |
2689 | int fd; | |
86a5659e JB |
2690 | { |
2691 | if (noninteractive) | |
2692 | return; | |
2693 | lmode = LINTRUP | lmode; | |
23dab951 | 2694 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2695 | } |
2696 | ||
dfcf069d | 2697 | void |
86a5659e JB |
2698 | reset_sigio () |
2699 | { | |
2700 | if (noninteractive) | |
2701 | return; | |
2702 | lmode = ~LINTRUP & lmode; | |
2703 | ioctl (0, TIOCLSET, &lmode); | |
2704 | } | |
2705 | ||
08633194 | 2706 | void |
86a5659e JB |
2707 | request_sigio () |
2708 | { | |
2709 | sigrelse (SIGTINT); | |
2710 | ||
2711 | interrupts_deferred = 0; | |
2712 | } | |
2713 | ||
08633194 | 2714 | void |
86a5659e JB |
2715 | unrequest_sigio () |
2716 | { | |
2717 | sighold (SIGTINT); | |
2718 | ||
2719 | interrupts_deferred = 1; | |
2720 | } | |
2721 | ||
2722 | /* still inside #ifdef BSD4_1 */ | |
2723 | #ifdef subprocesses | |
2724 | ||
2725 | int sigheld; /* Mask of held signals */ | |
2726 | ||
dfcf069d | 2727 | void |
86a5659e JB |
2728 | sigholdx (signum) |
2729 | int signum; | |
2730 | { | |
2731 | sigheld |= sigbit (signum); | |
2732 | sighold (signum); | |
2733 | } | |
2734 | ||
dfcf069d | 2735 | void |
86a5659e JB |
2736 | sigisheld (signum) |
2737 | int signum; | |
2738 | { | |
2739 | sigheld |= sigbit (signum); | |
2740 | } | |
2741 | ||
dfcf069d | 2742 | void |
86a5659e JB |
2743 | sigunhold (signum) |
2744 | int signum; | |
2745 | { | |
2746 | sigheld &= ~sigbit (signum); | |
2747 | sigrelse (signum); | |
2748 | } | |
2749 | ||
dfcf069d | 2750 | void |
86a5659e JB |
2751 | sigfree () /* Free all held signals */ |
2752 | { | |
2753 | int i; | |
2754 | for (i = 0; i < NSIG; i++) | |
2755 | if (sigheld & sigbit (i)) | |
2756 | sigrelse (i); | |
2757 | sigheld = 0; | |
2758 | } | |
2759 | ||
dfcf069d | 2760 | int |
86a5659e JB |
2761 | sigbit (i) |
2762 | { | |
2763 | return 1 << (i - 1); | |
2764 | } | |
2765 | #endif /* subprocesses */ | |
2766 | #endif /* BSD4_1 */ | |
2767 | \f | |
2768 | /* POSIX signals support - DJB */ | |
2769 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2770 | ||
2771 | #ifdef POSIX_SIGNALS | |
2772 | ||
c639b0e3 | 2773 | sigset_t empty_mask, full_mask; |
86a5659e | 2774 | |
dfcf069d | 2775 | void |
86a5659e JB |
2776 | init_signals () |
2777 | { | |
00eaaa32 JB |
2778 | sigemptyset (&empty_mask); |
2779 | sigfillset (&full_mask); | |
86a5659e JB |
2780 | } |
2781 | ||
86a5659e JB |
2782 | signal_handler_t |
2783 | sys_signal (int signal_number, signal_handler_t action) | |
2784 | { | |
c639b0e3 | 2785 | struct sigaction new_action, old_action; |
86a5659e | 2786 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2787 | new_action.sa_handler = action; |
25ab68af RS |
2788 | #ifdef SA_RESTART |
2789 | /* Emacs mostly works better with restartable system services. If this | |
2790 | * flag exists, we probably want to turn it on here. | |
2791 | */ | |
2792 | new_action.sa_flags = SA_RESTART; | |
2793 | #else | |
4a785b6e | 2794 | new_action.sa_flags = 0; |
25ab68af | 2795 | #endif |
d32b2f3c | 2796 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2797 | return (old_action.sa_handler); |
86a5659e JB |
2798 | } |
2799 | ||
e065a56e JB |
2800 | #ifndef __GNUC__ |
2801 | /* If we're compiling with GCC, we don't need this function, since it | |
2802 | can be written as a macro. */ | |
2803 | sigset_t | |
2804 | sys_sigmask (int sig) | |
2805 | { | |
2806 | sigset_t mask; | |
2807 | sigemptyset (&mask); | |
2808 | sigaddset (&mask, sig); | |
2809 | return mask; | |
2810 | } | |
2811 | #endif | |
2812 | ||
86a5659e JB |
2813 | /* I'd like to have these guys return pointers to the mask storage in here, |
2814 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2815 | safe and pass the structure. It normally won't be more than 2 bytes | |
2816 | anyhow. - DJB */ | |
2817 | ||
2818 | sigset_t | |
2819 | sys_sigblock (sigset_t new_mask) | |
2820 | { | |
2821 | sigset_t old_mask; | |
2822 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2823 | return (old_mask); | |
2824 | } | |
2825 | ||
2826 | sigset_t | |
2827 | sys_sigunblock (sigset_t new_mask) | |
2828 | { | |
2829 | sigset_t old_mask; | |
2830 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2831 | return (old_mask); | |
2832 | } | |
2833 | ||
2834 | sigset_t | |
2835 | sys_sigsetmask (sigset_t new_mask) | |
2836 | { | |
2837 | sigset_t old_mask; | |
2838 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2839 | return (old_mask); | |
2840 | } | |
2841 | ||
2842 | #endif /* POSIX_SIGNALS */ | |
2843 | \f | |
9927a7b1 | 2844 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
2845 | #ifdef random |
2846 | #define HAVE_RANDOM | |
2847 | #endif | |
2848 | #endif | |
2849 | ||
2850 | /* Figure out how many bits the system's random number generator uses. | |
2851 | `random' and `lrand48' are assumed to return 31 usable bits. | |
2852 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
2853 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
2854 | ||
2855 | #ifndef RAND_BITS | |
2856 | # ifdef HAVE_RANDOM | |
2857 | # define RAND_BITS 31 | |
2858 | # else /* !HAVE_RANDOM */ | |
2859 | # ifdef HAVE_LRAND48 | |
2860 | # define RAND_BITS 31 | |
2861 | # define random lrand48 | |
2862 | # else /* !HAVE_LRAND48 */ | |
2863 | # define RAND_BITS 15 | |
2864 | # if RAND_MAX == 32767 | |
2865 | # define random rand | |
2866 | # else /* RAND_MAX != 32767 */ | |
2867 | # if RAND_MAX == 2147483647 | |
2868 | # define random() (rand () >> 16) | |
2869 | # else /* RAND_MAX != 2147483647 */ | |
2870 | # ifdef USG | |
2871 | # define random rand | |
2872 | # else | |
2873 | # define random() (rand () >> 16) | |
2a633456 | 2874 | # endif /* !USG */ |
4bb8c8b7 KH |
2875 | # endif /* RAND_MAX != 2147483647 */ |
2876 | # endif /* RAND_MAX != 32767 */ | |
2877 | # endif /* !HAVE_LRAND48 */ | |
2878 | # endif /* !HAVE_RANDOM */ | |
2879 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2880 | |
4bb8c8b7 KH |
2881 | void |
2882 | seed_random (arg) | |
2883 | long arg; | |
86a5659e | 2884 | { |
4bb8c8b7 KH |
2885 | #ifdef HAVE_RANDOM |
2886 | srandom ((unsigned int)arg); | |
f8b53a82 | 2887 | #else |
4bb8c8b7 | 2888 | # ifdef HAVE_LRAND48 |
76425a49 | 2889 | srand48 (arg); |
4bb8c8b7 KH |
2890 | # else |
2891 | srand ((unsigned int)arg); | |
2892 | # endif | |
2e46c7c6 | 2893 | #endif |
86a5659e JB |
2894 | } |
2895 | ||
4bb8c8b7 KH |
2896 | /* |
2897 | * Build a full Emacs-sized word out of whatever we've got. | |
2898 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
2899 | */ | |
2900 | long | |
2901 | get_random () | |
2902 | { | |
2903 | long val = random (); | |
2904 | #if VALBITS > RAND_BITS | |
2905 | val = (val << RAND_BITS) ^ random (); | |
2906 | #if VALBITS > 2*RAND_BITS | |
2907 | val = (val << RAND_BITS) ^ random (); | |
2908 | #if VALBITS > 3*RAND_BITS | |
2909 | val = (val << RAND_BITS) ^ random (); | |
2910 | #if VALBITS > 4*RAND_BITS | |
2911 | val = (val << RAND_BITS) ^ random (); | |
2912 | #endif /* need at least 5 */ | |
2913 | #endif /* need at least 4 */ | |
2914 | #endif /* need at least 3 */ | |
2915 | #endif /* need at least 2 */ | |
2916 | return val & ((1L << VALBITS) - 1); | |
2917 | } | |
86a5659e JB |
2918 | \f |
2919 | #ifdef WRONG_NAME_INSQUE | |
2920 | ||
2921 | insque (q,p) | |
2922 | caddr_t q,p; | |
2923 | { | |
2924 | _insque (q,p); | |
2925 | } | |
2926 | ||
2927 | #endif | |
2928 | \f | |
2929 | #ifdef VMS | |
2930 | ||
2931 | #ifdef getenv | |
2932 | /* If any place else asks for the TERM variable, | |
2933 | allow it to be overridden with the EMACS_TERM variable | |
2934 | before attempting to translate the logical name TERM. As a last | |
2935 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2936 | #undef getenv | |
2937 | char * | |
2938 | sys_getenv (name) | |
2939 | char *name; | |
2940 | { | |
2941 | register char *val; | |
2942 | static char buf[256]; | |
2943 | static struct dsc$descriptor_s equiv | |
2944 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2945 | static struct dsc$descriptor_s d_name | |
2946 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2947 | short eqlen; | |
2948 | ||
2949 | if (!strcmp (name, "TERM")) | |
2950 | { | |
2951 | val = (char *) getenv ("EMACS_TERM"); | |
2952 | if (val) | |
2953 | return val; | |
2954 | } | |
2955 | ||
2956 | d_name.dsc$w_length = strlen (name); | |
2957 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2958 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2959 | { |
2960 | char *str = (char *) xmalloc (eqlen + 1); | |
2961 | bcopy (buf, str, eqlen); | |
2962 | str[eqlen] = '\0'; | |
2963 | /* This is a storage leak, but a pain to fix. With luck, | |
2964 | no one will ever notice. */ | |
2965 | return str; | |
2966 | } | |
2967 | return (char *) getenv (name); | |
2968 | } | |
2969 | #endif /* getenv */ | |
2970 | ||
2971 | #ifdef abort | |
2972 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2973 | to force a call on the debugger from within the image. */ | |
2974 | #undef abort | |
2975 | sys_abort () | |
2976 | { | |
2977 | reset_sys_modes (); | |
2978 | LIB$SIGNAL (SS$_DEBUG); | |
2979 | } | |
2980 | #endif /* abort */ | |
2981 | #endif /* VMS */ | |
2982 | \f | |
2983 | #ifdef VMS | |
2984 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 2985 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 2986 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2987 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2988 | version which is uninitialized... If not for this "feature", we | |
2989 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2990 | int sys_nerr = 35; | |
2991 | char *sys_errlist[] = | |
2992 | { | |
2993 | "error 0", | |
2994 | "not owner", | |
2995 | "no such file or directory", | |
2996 | "no such process", | |
2997 | "interrupted system call", | |
2998 | "i/o error", | |
2999 | "no such device or address", | |
3000 | "argument list too long", | |
3001 | "exec format error", | |
3002 | "bad file number", | |
3003 | "no child process", | |
3004 | "no more processes", | |
3005 | "not enough memory", | |
3006 | "permission denied", | |
3007 | "bad address", | |
3008 | "block device required", | |
3009 | "mount devices busy", | |
3010 | "file exists", | |
3011 | "cross-device link", | |
3012 | "no such device", | |
3013 | "not a directory", | |
3014 | "is a directory", | |
3015 | "invalid argument", | |
3016 | "file table overflow", | |
3017 | "too many open files", | |
3018 | "not a typewriter", | |
3019 | "text file busy", | |
3020 | "file too big", | |
3021 | "no space left on device", | |
3022 | "illegal seek", | |
3023 | "read-only file system", | |
3024 | "too many links", | |
3025 | "broken pipe", | |
3026 | "math argument", | |
3027 | "result too large", | |
3028 | "I/O stream empty", | |
3029 | "vax/vms specific error code nontranslatable error" | |
3030 | }; | |
ea5a0917 | 3031 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
3032 | #endif /* LINK_CRTL_SHARE */ |
3033 | #endif /* VMS */ | |
7088d1ca RM |
3034 | |
3035 | #ifndef HAVE_STRERROR | |
fe03522b | 3036 | #ifndef WINDOWSNT |
7088d1ca RM |
3037 | char * |
3038 | strerror (errnum) | |
3039 | int errnum; | |
3040 | { | |
3041 | extern char *sys_errlist[]; | |
3042 | extern int sys_nerr; | |
3043 | ||
3044 | if (errnum >= 0 && errnum < sys_nerr) | |
3045 | return sys_errlist[errnum]; | |
3046 | return (char *) "Unknown error"; | |
3047 | } | |
fe03522b | 3048 | #endif /* not WINDOWSNT */ |
7088d1ca | 3049 | #endif /* ! HAVE_STRERROR */ |
86a5659e JB |
3050 | \f |
3051 | #ifdef INTERRUPTIBLE_OPEN | |
3052 | ||
3053 | int | |
3054 | /* VARARGS 2 */ | |
3055 | sys_open (path, oflag, mode) | |
3056 | char *path; | |
3057 | int oflag, mode; | |
3058 | { | |
3059 | register int rtnval; | |
3060 | ||
3061 | while ((rtnval = open (path, oflag, mode)) == -1 | |
3062 | && (errno == EINTR)); | |
3063 | return (rtnval); | |
3064 | } | |
3065 | ||
3066 | #endif /* INTERRUPTIBLE_OPEN */ | |
3067 | ||
3068 | #ifdef INTERRUPTIBLE_CLOSE | |
3069 | ||
dfcf069d | 3070 | int |
86a5659e JB |
3071 | sys_close (fd) |
3072 | int fd; | |
3073 | { | |
fe111daf | 3074 | int did_retry = 0; |
86a5659e JB |
3075 | register int rtnval; |
3076 | ||
3077 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3078 | && (errno == EINTR)) |
3079 | did_retry = 1; | |
3080 | ||
3081 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3082 | file descriptor. If it did the second close will fail with | |
3083 | errno = EBADF. That means we have succeeded. */ | |
3084 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3085 | return 0; | |
3086 | ||
86a5659e JB |
3087 | return rtnval; |
3088 | } | |
3089 | ||
3090 | #endif /* INTERRUPTIBLE_CLOSE */ | |
3091 | ||
3092 | #ifdef INTERRUPTIBLE_IO | |
3093 | ||
3094 | int | |
3095 | sys_read (fildes, buf, nbyte) | |
3096 | int fildes; | |
3097 | char *buf; | |
3098 | unsigned int nbyte; | |
3099 | { | |
3100 | register int rtnval; | |
3101 | ||
3102 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
3103 | && (errno == EINTR)); | |
3104 | return (rtnval); | |
3105 | } | |
3106 | ||
3107 | int | |
3108 | sys_write (fildes, buf, nbyte) | |
3109 | int fildes; | |
3110 | char *buf; | |
3111 | unsigned int nbyte; | |
3112 | { | |
b95520f5 | 3113 | register int rtnval, bytes_written; |
86a5659e | 3114 | |
b95520f5 BF |
3115 | bytes_written = 0; |
3116 | ||
3117 | while (nbyte > 0) | |
3118 | { | |
3119 | rtnval = write (fildes, buf, nbyte); | |
3120 | ||
3121 | if (rtnval == -1) | |
3122 | { | |
3123 | if (errno == EINTR) | |
3124 | continue; | |
3125 | else | |
aa670904 | 3126 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3127 | } |
3128 | ||
3129 | buf += rtnval; | |
3130 | nbyte -= rtnval; | |
3131 | bytes_written += rtnval; | |
3132 | } | |
3133 | return (bytes_written); | |
86a5659e JB |
3134 | } |
3135 | ||
3136 | #endif /* INTERRUPTIBLE_IO */ | |
3137 | \f | |
0e18d8ef | 3138 | #ifndef HAVE_VFORK |
fe03522b | 3139 | #ifndef WINDOWSNT |
0e18d8ef | 3140 | /* |
fe03522b | 3141 | * Substitute fork for vfork on USG flavors. |
0e18d8ef RS |
3142 | */ |
3143 | ||
e336874b | 3144 | VFORK_RETURN_TYPE |
0e18d8ef RS |
3145 | vfork () |
3146 | { | |
3147 | return (fork ()); | |
3148 | } | |
fe03522b | 3149 | #endif /* not WINDOWSNT */ |
0e18d8ef RS |
3150 | #endif /* not HAVE_VFORK */ |
3151 | \f | |
86a5659e JB |
3152 | #ifdef USG |
3153 | /* | |
3154 | * All of the following are for USG. | |
3155 | * | |
3156 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3157 | * that the user program has elected to catch. Thus the system call | |
3158 | * must be retried in these cases. To handle this without massive | |
3159 | * changes in the source code, we remap the standard system call names | |
3160 | * to names for our own functions in sysdep.c that do the system call | |
3161 | * with retries. Actually, for portability reasons, it is good | |
3162 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3163 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3164 | * adds an extra level of function call overhead but it is almost |
3165 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3166 | */ | |
3167 | ||
00eaaa32 | 3168 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
3169 | char *sys_siglist[NSIG + 1] = |
3170 | { | |
3171 | #ifdef AIX | |
3172 | /* AIX has changed the signals a bit */ | |
3173 | "bogus signal", /* 0 */ | |
3174 | "hangup", /* 1 SIGHUP */ | |
3175 | "interrupt", /* 2 SIGINT */ | |
3176 | "quit", /* 3 SIGQUIT */ | |
3177 | "illegal instruction", /* 4 SIGILL */ | |
3178 | "trace trap", /* 5 SIGTRAP */ | |
3179 | "IOT instruction", /* 6 SIGIOT */ | |
3180 | "crash likely", /* 7 SIGDANGER */ | |
3181 | "floating point exception", /* 8 SIGFPE */ | |
3182 | "kill", /* 9 SIGKILL */ | |
3183 | "bus error", /* 10 SIGBUS */ | |
3184 | "segmentation violation", /* 11 SIGSEGV */ | |
3185 | "bad argument to system call", /* 12 SIGSYS */ | |
3186 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3187 | "alarm clock", /* 14 SIGALRM */ | |
3188 | "software termination signum", /* 15 SIGTERM */ | |
3189 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3190 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3191 | "death of a child", /* 18 SIGCLD */ | |
3192 | "power-fail restart", /* 19 SIGPWR */ | |
3193 | "bogus signal", /* 20 */ | |
3194 | "bogus signal", /* 21 */ | |
3195 | "bogus signal", /* 22 */ | |
3196 | "bogus signal", /* 23 */ | |
3197 | "bogus signal", /* 24 */ | |
3198 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
3199 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
3200 | "I/O intervention required", /* 27 SIGIOINT */ | |
6056c55b | 3201 | #ifdef AIXHFT |
86a5659e JB |
3202 | "HFT grant", /* 28 SIGGRANT */ |
3203 | "HFT retract", /* 29 SIGRETRACT */ | |
3204 | "HFT sound done", /* 30 SIGSOUND */ | |
3205 | "HFT input ready", /* 31 SIGMSG */ | |
6056c55b | 3206 | #endif |
86a5659e JB |
3207 | #else /* not AIX */ |
3208 | "bogus signal", /* 0 */ | |
3209 | "hangup", /* 1 SIGHUP */ | |
3210 | "interrupt", /* 2 SIGINT */ | |
3211 | "quit", /* 3 SIGQUIT */ | |
3212 | "illegal instruction", /* 4 SIGILL */ | |
3213 | "trace trap", /* 5 SIGTRAP */ | |
3214 | "IOT instruction", /* 6 SIGIOT */ | |
3215 | "EMT instruction", /* 7 SIGEMT */ | |
3216 | "floating point exception", /* 8 SIGFPE */ | |
3217 | "kill", /* 9 SIGKILL */ | |
3218 | "bus error", /* 10 SIGBUS */ | |
3219 | "segmentation violation", /* 11 SIGSEGV */ | |
3220 | "bad argument to system call", /* 12 SIGSYS */ | |
3221 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3222 | "alarm clock", /* 14 SIGALRM */ | |
3223 | "software termination signum", /* 15 SIGTERM */ | |
3224 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3225 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3226 | "death of a child", /* 18 SIGCLD */ | |
3227 | "power-fail restart", /* 19 SIGPWR */ | |
0f0ea229 RS |
3228 | #ifdef sun |
3229 | "window size change", /* 20 SIGWINCH */ | |
3230 | "urgent socket condition", /* 21 SIGURG */ | |
ea5a0917 | 3231 | "pollable event occurred", /* 22 SIGPOLL */ |
0f0ea229 RS |
3232 | "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ |
3233 | "user stop requested from tty", /* 24 SIGTSTP */ | |
3234 | "stopped process has been continued", /* 25 SIGCONT */ | |
3235 | "background tty read attempted", /* 26 SIGTTIN */ | |
3236 | "background tty write attempted", /* 27 SIGTTOU */ | |
3237 | "virtual timer expired", /* 28 SIGVTALRM */ | |
3238 | "profiling timer expired", /* 29 SIGPROF */ | |
3239 | "exceeded cpu limit", /* 30 SIGXCPU */ | |
3240 | "exceeded file size limit", /* 31 SIGXFSZ */ | |
3241 | "process's lwps are blocked", /* 32 SIGWAITING */ | |
3242 | "special signal used by thread library", /* 33 SIGLWP */ | |
2da0df4d | 3243 | #ifdef SIGFREEZE |
0f0ea229 | 3244 | "Special Signal Used By CPR", /* 34 SIGFREEZE */ |
2da0df4d RS |
3245 | #endif |
3246 | #ifdef SIGTHAW | |
0f0ea229 | 3247 | "Special Signal Used By CPR", /* 35 SIGTHAW */ |
2da0df4d | 3248 | #endif |
0f0ea229 | 3249 | #endif /* sun */ |
86a5659e JB |
3250 | #endif /* not AIX */ |
3251 | 0 | |
3252 | }; | |
70080de1 | 3253 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
3254 | |
3255 | /* | |
3256 | * Warning, this function may not duplicate 4.2 action properly | |
3257 | * under error conditions. | |
3258 | */ | |
3259 | ||
3260 | #ifndef MAXPATHLEN | |
3261 | /* In 4.1, param.h fails to define this. */ | |
3262 | #define MAXPATHLEN 1024 | |
3263 | #endif | |
3264 | ||
3265 | #ifndef HAVE_GETWD | |
3266 | ||
3267 | char * | |
3268 | getwd (pathname) | |
3269 | char *pathname; | |
3270 | { | |
3271 | char *npath, *spath; | |
3272 | extern char *getcwd (); | |
3273 | ||
9ac0d9e0 | 3274 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3275 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
3276 | if (spath == 0) |
3277 | return spath; | |
86a5659e JB |
3278 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3279 | up to first slash. Should be harmless on other systems. */ | |
3280 | while (*npath && *npath != '/') | |
3281 | npath++; | |
3282 | strcpy (pathname, npath); | |
3283 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3284 | UNBLOCK_INPUT; |
86a5659e JB |
3285 | return pathname; |
3286 | } | |
3287 | ||
3288 | #endif /* HAVE_GETWD */ | |
3289 | ||
3290 | /* | |
3291 | * Emulate rename using unlink/link. Note that this is | |
3292 | * only partially correct. Also, doesn't enforce restriction | |
3293 | * that files be of same type (regular->regular, dir->dir, etc). | |
3294 | */ | |
3295 | ||
4746118a JB |
3296 | #ifndef HAVE_RENAME |
3297 | ||
86a5659e | 3298 | rename (from, to) |
19c7afdf JB |
3299 | const char *from; |
3300 | const char *to; | |
86a5659e JB |
3301 | { |
3302 | if (access (from, 0) == 0) | |
3303 | { | |
3304 | unlink (to); | |
3305 | if (link (from, to) == 0) | |
3306 | if (unlink (from) == 0) | |
3307 | return (0); | |
3308 | } | |
3309 | return (-1); | |
3310 | } | |
3311 | ||
4746118a JB |
3312 | #endif |
3313 | ||
86a5659e JB |
3314 | |
3315 | #ifdef HPUX | |
3316 | #ifndef HAVE_PERROR | |
3317 | ||
3318 | /* HPUX curses library references perror, but as far as we know | |
3319 | it won't be called. Anyway this definition will do for now. */ | |
3320 | ||
3321 | perror () | |
3322 | { | |
3323 | } | |
3324 | ||
3325 | #endif /* not HAVE_PERROR */ | |
3326 | #endif /* HPUX */ | |
3327 | ||
3328 | #ifndef HAVE_DUP2 | |
3329 | ||
3330 | /* | |
3331 | * Emulate BSD dup2. First close newd if it already exists. | |
3332 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3333 | * until we are, then close the unsuccessful ones. | |
3334 | */ | |
3335 | ||
3336 | dup2 (oldd, newd) | |
3337 | int oldd; | |
3338 | int newd; | |
3339 | { | |
3340 | register int fd, ret; | |
3341 | ||
3342 | sys_close (newd); | |
3343 | ||
3344 | #ifdef F_DUPFD | |
3345 | fd = fcntl (oldd, F_DUPFD, newd); | |
3346 | if (fd != newd) | |
7088d1ca | 3347 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
86a5659e JB |
3348 | #else |
3349 | fd = dup (old); | |
3350 | if (fd == -1) | |
3351 | return -1; | |
3352 | if (fd == new) | |
3353 | return new; | |
3354 | ret = dup2 (old,new); | |
3355 | sys_close (fd); | |
3356 | return ret; | |
3357 | #endif | |
3358 | } | |
3359 | ||
3360 | #endif /* not HAVE_DUP2 */ | |
3361 | ||
3362 | /* | |
3363 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3364 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3365 | * Only needed when subprocesses are defined. | |
3366 | */ | |
3367 | ||
3368 | #ifdef subprocesses | |
3369 | #ifndef VMS | |
3370 | #ifndef HAVE_GETTIMEOFDAY | |
3371 | #ifdef HAVE_TIMEVAL | |
3372 | ||
3373 | /* ARGSUSED */ | |
dfcf069d | 3374 | int |
86a5659e JB |
3375 | gettimeofday (tp, tzp) |
3376 | struct timeval *tp; | |
3377 | struct timezone *tzp; | |
3378 | { | |
3379 | extern long time (); | |
3380 | ||
3381 | tp->tv_sec = time ((long *)0); | |
3382 | tp->tv_usec = 0; | |
4ca7594f RS |
3383 | if (tzp != 0) |
3384 | tzp->tz_minuteswest = -1; | |
dfcf069d | 3385 | return 0; |
86a5659e JB |
3386 | } |
3387 | ||
3388 | #endif | |
3389 | #endif | |
3390 | #endif | |
3391 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3392 | ||
3393 | /* | |
3394 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3395 | */ | |
3396 | ||
dfcf069d | 3397 | void |
86a5659e JB |
3398 | croak (badfunc) |
3399 | char *badfunc; | |
3400 | { | |
3401 | printf ("%s not yet implemented\r\n", badfunc); | |
3402 | reset_sys_modes (); | |
3403 | exit (1); | |
3404 | } | |
3405 | ||
3406 | #endif /* USG */ | |
3407 | \f | |
3408 | #ifdef DGUX | |
3409 | ||
3410 | char *sys_siglist[NSIG + 1] = | |
3411 | { | |
3412 | "null signal", /* 0 SIGNULL */ | |
3413 | "hangup", /* 1 SIGHUP */ | |
3414 | "interrupt", /* 2 SIGINT */ | |
3415 | "quit", /* 3 SIGQUIT */ | |
3416 | "illegal instruction", /* 4 SIGILL */ | |
3417 | "trace trap", /* 5 SIGTRAP */ | |
3418 | "abort termination", /* 6 SIGABRT */ | |
3419 | "SIGEMT", /* 7 SIGEMT */ | |
3420 | "floating point exception", /* 8 SIGFPE */ | |
3421 | "kill", /* 9 SIGKILL */ | |
3422 | "bus error", /* 10 SIGBUS */ | |
3423 | "segmentation violation", /* 11 SIGSEGV */ | |
3424 | "bad argument to system call", /* 12 SIGSYS */ | |
3425 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
3426 | "alarm clock", /* 14 SIGALRM */ | |
3427 | "software termination signal", /* 15 SIGTERM */ | |
3428 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3429 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3430 | "child stopped or terminated", /* 18 SIGCLD */ | |
3431 | "power-fail restart", /* 19 SIGPWR */ | |
3432 | "window size changed", /* 20 SIGWINCH */ | |
3433 | "undefined", /* 21 */ | |
eb8c3be9 | 3434 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
3435 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
3436 | "stop signal from tty", /* 24 SIGSTP */ | |
3437 | "continue a stopped process", /* 25 SIGCONT */ | |
3438 | "attempted background tty read", /* 26 SIGTTIN */ | |
3439 | "attempted background tty write", /* 27 SIGTTOU */ | |
3440 | "undefined", /* 28 */ | |
3441 | "undefined", /* 29 */ | |
3442 | "undefined", /* 30 */ | |
3443 | "undefined", /* 31 */ | |
3444 | "undefined", /* 32 */ | |
3445 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
3446 | "I/O is possible", /* 34 SIGIO */ | |
3447 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
3448 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
3449 | "virtual time alarm", /* 37 SIGVTALRM */ | |
3450 | "profiling time alarm", /* 38 SIGPROF */ | |
3451 | "undefined", /* 39 */ | |
3452 | "file record locks revoked", /* 40 SIGLOST */ | |
3453 | "undefined", /* 41 */ | |
3454 | "undefined", /* 42 */ | |
3455 | "undefined", /* 43 */ | |
3456 | "undefined", /* 44 */ | |
3457 | "undefined", /* 45 */ | |
3458 | "undefined", /* 46 */ | |
3459 | "undefined", /* 47 */ | |
3460 | "undefined", /* 48 */ | |
3461 | "undefined", /* 49 */ | |
3462 | "undefined", /* 50 */ | |
3463 | "undefined", /* 51 */ | |
3464 | "undefined", /* 52 */ | |
3465 | "undefined", /* 53 */ | |
3466 | "undefined", /* 54 */ | |
3467 | "undefined", /* 55 */ | |
3468 | "undefined", /* 56 */ | |
3469 | "undefined", /* 57 */ | |
3470 | "undefined", /* 58 */ | |
3471 | "undefined", /* 59 */ | |
3472 | "undefined", /* 60 */ | |
3473 | "undefined", /* 61 */ | |
3474 | "undefined", /* 62 */ | |
3475 | "undefined", /* 63 */ | |
3476 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
3477 | 0 | |
3478 | }; | |
3479 | ||
3480 | #endif /* DGUX */ | |
3481 | \f | |
3482 | /* Directory routines for systems that don't have them. */ | |
3483 | ||
3484 | #ifdef SYSV_SYSTEM_DIR | |
3485 | ||
3486 | #include <dirent.h> | |
3487 | ||
1db6401c | 3488 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
cfdc57af | 3489 | |
86a5659e JB |
3490 | int |
3491 | closedir (dirp) | |
3492 | register DIR *dirp; /* stream from opendir */ | |
3493 | { | |
cfdc57af RS |
3494 | int rtnval; |
3495 | ||
3496 | rtnval = sys_close (dirp->dd_fd); | |
1b929d25 | 3497 | |
65aa44ac JB |
3498 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3499 | in one block. Why in the world are we freeing this ourselves | |
3500 | anyway? */ | |
3501 | #if ! (defined (sun) && defined (USG5_4)) | |
3502 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3503 | #endif | |
9ac0d9e0 | 3504 | xfree ((char *) dirp); |
cfdc57af RS |
3505 | |
3506 | return rtnval; | |
86a5659e | 3507 | } |
1db6401c | 3508 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3509 | #endif /* SYSV_SYSTEM_DIR */ |
3510 | ||
3511 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3512 | ||
3513 | DIR * | |
3514 | opendir (filename) | |
3515 | char *filename; /* name of directory */ | |
3516 | { | |
3517 | register DIR *dirp; /* -> malloc'ed storage */ | |
3518 | register int fd; /* file descriptor for read */ | |
3519 | struct stat sbuf; /* result of fstat */ | |
3520 | ||
3521 | fd = sys_open (filename, 0); | |
3522 | if (fd < 0) | |
3523 | return 0; | |
3524 | ||
9ac0d9e0 | 3525 | BLOCK_INPUT; |
86a5659e JB |
3526 | if (fstat (fd, &sbuf) < 0 |
3527 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3528 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3529 | { | |
3530 | sys_close (fd); | |
9ac0d9e0 | 3531 | UNBLOCK_INPUT; |
86a5659e JB |
3532 | return 0; /* bad luck today */ |
3533 | } | |
9ac0d9e0 | 3534 | UNBLOCK_INPUT; |
86a5659e JB |
3535 | |
3536 | dirp->dd_fd = fd; | |
3537 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3538 | ||
3539 | return dirp; | |
3540 | } | |
3541 | ||
3542 | void | |
3543 | closedir (dirp) | |
3544 | register DIR *dirp; /* stream from opendir */ | |
3545 | { | |
3546 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 3547 | xfree ((char *) dirp); |
86a5659e JB |
3548 | } |
3549 | ||
3550 | ||
3551 | #ifndef VMS | |
3552 | #define DIRSIZ 14 | |
3553 | struct olddir | |
3554 | { | |
3555 | ino_t od_ino; /* inode */ | |
3556 | char od_name[DIRSIZ]; /* filename */ | |
3557 | }; | |
3558 | #endif /* not VMS */ | |
3559 | ||
3560 | struct direct dir_static; /* simulated directory contents */ | |
3561 | ||
3562 | /* ARGUSED */ | |
3563 | struct direct * | |
3564 | readdir (dirp) | |
3565 | register DIR *dirp; /* stream from opendir */ | |
3566 | { | |
3567 | #ifndef VMS | |
3568 | register struct olddir *dp; /* -> directory data */ | |
3569 | #else /* VMS */ | |
3570 | register struct dir$_name *dp; /* -> directory data */ | |
3571 | register struct dir$_version *dv; /* -> version data */ | |
3572 | #endif /* VMS */ | |
3573 | ||
3574 | for (; ;) | |
3575 | { | |
3576 | if (dirp->dd_loc >= dirp->dd_size) | |
3577 | dirp->dd_loc = dirp->dd_size = 0; | |
3578 | ||
3579 | if (dirp->dd_size == 0 /* refill buffer */ | |
3580 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3581 | return 0; | |
3582 | ||
3583 | #ifndef VMS | |
3584 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3585 | dirp->dd_loc += sizeof (struct olddir); | |
3586 | ||
3587 | if (dp->od_ino != 0) /* not deleted entry */ | |
3588 | { | |
3589 | dir_static.d_ino = dp->od_ino; | |
3590 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3591 | dir_static.d_name[DIRSIZ] = '\0'; | |
3592 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3593 | dir_static.d_reclen = sizeof (struct direct) | |
3594 | - MAXNAMLEN + 3 | |
3595 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3596 | return &dir_static; /* -> simulated structure */ | |
3597 | } | |
3598 | #else /* VMS */ | |
3599 | dp = (struct dir$_name *) dirp->dd_buf; | |
3600 | if (dirp->dd_loc == 0) | |
3601 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3602 | : dp->dir$b_namecount; | |
3603 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3604 | dir_static.d_ino = dv->dir$w_fid_num; | |
3605 | dir_static.d_namlen = dp->dir$b_namecount; | |
3606 | dir_static.d_reclen = sizeof (struct direct) | |
3607 | - MAXNAMLEN + 3 | |
3608 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3609 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3610 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3611 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3612 | return &dir_static; | |
3613 | #endif /* VMS */ | |
3614 | } | |
3615 | } | |
3616 | ||
3617 | #ifdef VMS | |
3618 | /* readdirver is just like readdir except it returns all versions of a file | |
3619 | as separate entries. */ | |
3620 | ||
3621 | /* ARGUSED */ | |
3622 | struct direct * | |
3623 | readdirver (dirp) | |
3624 | register DIR *dirp; /* stream from opendir */ | |
3625 | { | |
3626 | register struct dir$_name *dp; /* -> directory data */ | |
3627 | register struct dir$_version *dv; /* -> version data */ | |
3628 | ||
3629 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3630 | dirp->dd_loc = dirp->dd_size = 0; | |
3631 | ||
3632 | if (dirp->dd_size == 0 /* refill buffer */ | |
3633 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3634 | return 0; | |
3635 | ||
3636 | dp = (struct dir$_name *) dirp->dd_buf; | |
3637 | if (dirp->dd_loc == 0) | |
3638 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3639 | : dp->dir$b_namecount; | |
3640 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3641 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3642 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3643 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3644 | dir_static.d_ino = dv->dir$w_fid_num; | |
3645 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3646 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3647 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3648 | return &dir_static; | |
3649 | } | |
3650 | ||
3651 | #endif /* VMS */ | |
3652 | ||
3653 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3654 | |
3655 | \f | |
53ea491a | 3656 | int |
061ea326 | 3657 | set_file_times (filename, atime, mtime) |
8334eb21 | 3658 | char *filename; |
53ea491a KH |
3659 | EMACS_TIME atime, mtime; |
3660 | { | |
3661 | #ifdef HAVE_UTIMES | |
3662 | struct timeval tv[2]; | |
3663 | tv[0] = atime; | |
3664 | tv[1] = mtime; | |
8334eb21 RS |
3665 | return utimes (filename, tv); |
3666 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3667 | struct utimbuf utb; |
3668 | utb.actime = EMACS_SECS (atime); | |
3669 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3670 | return utime (filename, &utb); |
3671 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3672 | } |
3673 | \f | |
23524fb9 JB |
3674 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3675 | ||
3676 | #ifndef HAVE_MKDIR | |
3677 | /* | |
3678 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3679 | * | |
3680 | * If you want it, it's yours. All I ask in return is that if you | |
3681 | * figure out how to do this in a Bourne Shell script you send me | |
3682 | * a copy. | |
3683 | * sdcsvax!rmr or rmr@uscd | |
3684 | * | |
3685 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3686 | * subroutine. 11Mar86; hoptoad!gnu | |
3687 | * | |
3688 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3689 | * subroutine didn't return EEXIST. It does now. | |
3690 | */ | |
3691 | ||
3692 | /* | |
3693 | * Make a directory. | |
3694 | */ | |
f3892946 RS |
3695 | #ifdef MKDIR_PROTOTYPE |
3696 | MKDIR_PROTOTYPE | |
3697 | #else | |
23524fb9 JB |
3698 | int |
3699 | mkdir (dpath, dmode) | |
3700 | char *dpath; | |
3701 | int dmode; | |
f3892946 | 3702 | #endif |
23524fb9 | 3703 | { |
039f26a4 | 3704 | int cpid, status, fd; |
23524fb9 JB |
3705 | struct stat statbuf; |
3706 | ||
3707 | if (stat (dpath, &statbuf) == 0) | |
3708 | { | |
3709 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3710 | return -1; | |
3711 | } | |
3712 | ||
3713 | /* If stat fails for a reason other than non-existence, return error */ | |
3714 | if (errno != ENOENT) | |
3715 | return -1; | |
3716 | ||
039f26a4 | 3717 | synch_process_alive = 1; |
23524fb9 JB |
3718 | switch (cpid = fork ()) |
3719 | { | |
3720 | ||
039f26a4 | 3721 | case -1: /* Error in fork */ |
23524fb9 JB |
3722 | return (-1); /* Errno is set already */ |
3723 | ||
3724 | case 0: /* Child process */ | |
3725 | /* | |
3726 | * Cheap hack to set mode of new directory. Since this | |
3727 | * child process is going away anyway, we zap its umask. | |
3728 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3729 | * directory. Does anybody care? | |
3730 | */ | |
3731 | status = umask (0); /* Get current umask */ | |
3732 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3733 | fd = sys_open("/dev/null", 2); |
3734 | if (fd >= 0) | |
3735 | { | |
3736 | dup2 (fd, 0); | |
3737 | dup2 (fd, 1); | |
3738 | dup2 (fd, 2); | |
3739 | } | |
23524fb9 JB |
3740 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3741 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3742 | ||
3743 | default: /* Parent process */ | |
039f26a4 | 3744 | wait_for_termination (cpid); |
23524fb9 JB |
3745 | } |
3746 | ||
039f26a4 | 3747 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3748 | { |
3749 | errno = EIO; /* We don't know why, but */ | |
3750 | return -1; /* /bin/mkdir failed */ | |
3751 | } | |
3752 | ||
3753 | return 0; | |
3754 | } | |
3755 | #endif /* not HAVE_MKDIR */ | |
3756 | ||
3757 | #ifndef HAVE_RMDIR | |
3758 | int | |
3759 | rmdir (dpath) | |
3760 | char *dpath; | |
3761 | { | |
039f26a4 | 3762 | int cpid, status, fd; |
23524fb9 JB |
3763 | struct stat statbuf; |
3764 | ||
3765 | if (stat (dpath, &statbuf) != 0) | |
3766 | { | |
3767 | /* Stat just set errno. We don't have to */ | |
3768 | return -1; | |
3769 | } | |
3770 | ||
039f26a4 | 3771 | synch_process_alive = 1; |
23524fb9 JB |
3772 | switch (cpid = fork ()) |
3773 | { | |
3774 | ||
039f26a4 | 3775 | case -1: /* Error in fork */ |
23524fb9 JB |
3776 | return (-1); /* Errno is set already */ |
3777 | ||
3778 | case 0: /* Child process */ | |
039f26a4 RS |
3779 | fd = sys_open("/dev/null", 2); |
3780 | if (fd >= 0) | |
3781 | { | |
3782 | dup2 (fd, 0); | |
3783 | dup2 (fd, 1); | |
3784 | dup2 (fd, 2); | |
3785 | } | |
f560db78 RS |
3786 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3787 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3788 | ||
207bdbdb | 3789 | default: /* Parent process */ |
f560db78 | 3790 | wait_for_termination (cpid); |
23524fb9 JB |
3791 | } |
3792 | ||
f560db78 | 3793 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3794 | { |
3795 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3796 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3797 | } |
3798 | ||
3799 | return 0; | |
3800 | } | |
3801 | #endif /* !HAVE_RMDIR */ | |
3802 | ||
3803 | ||
86a5659e JB |
3804 | \f |
3805 | /* Functions for VMS */ | |
3806 | #ifdef VMS | |
91bac16a | 3807 | #include "vms-pwd.h" |
86a5659e JB |
3808 | #include <acldef.h> |
3809 | #include <chpdef.h> | |
3810 | #include <jpidef.h> | |
3811 | ||
3812 | /* Return as a string the VMS error string pertaining to STATUS. | |
3813 | Reuses the same static buffer each time it is called. */ | |
3814 | ||
3815 | char * | |
3816 | vmserrstr (status) | |
3817 | int status; /* VMS status code */ | |
3818 | { | |
3819 | int bufadr[2]; | |
3820 | short len; | |
3821 | static char buf[257]; | |
3822 | ||
3823 | bufadr[0] = sizeof buf - 1; | |
3824 | bufadr[1] = (int) buf; | |
3825 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3826 | return "untranslatable VMS error status"; | |
3827 | buf[len] = '\0'; | |
3828 | return buf; | |
3829 | } | |
3830 | ||
3831 | #ifdef access | |
3832 | #undef access | |
3833 | ||
3834 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3835 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3836 | */ | |
3837 | ||
3838 | #ifdef VMS4_4 | |
3839 | ||
3840 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3841 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3842 | ||
3843 | typedef union { | |
3844 | struct { | |
3845 | unsigned short s_buflen; | |
3846 | unsigned short s_code; | |
3847 | char *s_bufadr; | |
3848 | unsigned short *s_retlenadr; | |
3849 | } s; | |
3850 | int end; | |
3851 | } item; | |
3852 | #define buflen s.s_buflen | |
3853 | #define code s.s_code | |
3854 | #define bufadr s.s_bufadr | |
3855 | #define retlenadr s.s_retlenadr | |
3856 | ||
3857 | #define R_OK 4 /* test for read permission */ | |
3858 | #define W_OK 2 /* test for write permission */ | |
3859 | #define X_OK 1 /* test for execute (search) permission */ | |
3860 | #define F_OK 0 /* test for presence of file */ | |
3861 | ||
3862 | int | |
3863 | sys_access (path, mode) | |
3864 | char *path; | |
3865 | int mode; | |
3866 | { | |
3867 | static char *user = NULL; | |
3868 | char dir_fn[512]; | |
3869 | ||
3870 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3871 | * access can treat the directory like a file. */ | |
3872 | if (directory_file_name (path, dir_fn)) | |
3873 | path = dir_fn; | |
3874 | ||
3875 | if (mode == F_OK) | |
3876 | return access (path, mode); | |
3877 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3878 | return -1; | |
3879 | { | |
3880 | int stat; | |
3881 | int flags; | |
3882 | int acces; | |
3883 | unsigned short int dummy; | |
3884 | item itemlst[3]; | |
3885 | static int constant = ACL$C_FILE; | |
3886 | DESCRIPTOR (path_desc, path); | |
3887 | DESCRIPTOR (user_desc, user); | |
3888 | ||
3889 | flags = 0; | |
3890 | acces = 0; | |
3891 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3892 | return stat; | |
3893 | if (mode & R_OK) | |
3894 | acces |= CHP$M_READ; | |
3895 | if (mode & W_OK) | |
3896 | acces |= CHP$M_WRITE; | |
3897 | itemlst[0].buflen = sizeof (int); | |
3898 | itemlst[0].code = CHP$_FLAGS; | |
3899 | itemlst[0].bufadr = (char *) &flags; | |
3900 | itemlst[0].retlenadr = &dummy; | |
3901 | itemlst[1].buflen = sizeof (int); | |
3902 | itemlst[1].code = CHP$_ACCESS; | |
3903 | itemlst[1].bufadr = (char *) &acces; | |
3904 | itemlst[1].retlenadr = &dummy; | |
3905 | itemlst[2].end = CHP$_END; | |
3906 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3907 | return stat == SS$_NORMAL ? 0 : -1; | |
3908 | } | |
3909 | } | |
3910 | ||
3911 | #else /* not VMS4_4 */ | |
3912 | ||
3913 | #include <prvdef.h> | |
fe03522b RS |
3914 | #define ACE$M_WRITE 2 |
3915 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3916 | |
3917 | static unsigned short memid, grpid; | |
3918 | static unsigned int uic; | |
3919 | ||
3920 | /* Called from init_sys_modes, so it happens not very often | |
3921 | but at least each time Emacs is loaded. */ | |
dfcf069d | 3922 | void |
86a5659e JB |
3923 | sys_access_reinit () |
3924 | { | |
3925 | uic = 0; | |
3926 | } | |
3927 | ||
3928 | int | |
3929 | sys_access (filename, type) | |
3930 | char * filename; | |
3931 | int type; | |
3932 | { | |
3933 | struct FAB fab; | |
3934 | struct XABPRO xab; | |
3935 | int status, size, i, typecode, acl_controlled; | |
3936 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3937 | union prvdef prvmask; | |
3938 | ||
3939 | /* Get UIC and GRP values for protection checking. */ | |
3940 | if (uic == 0) | |
3941 | { | |
3942 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3943 | if (! (status & 1)) | |
3944 | return -1; | |
3945 | memid = uic & 0xFFFF; | |
3946 | grpid = uic >> 16; | |
3947 | } | |
3948 | ||
fe03522b | 3949 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3950 | return access (filename, type); |
3951 | ||
3952 | /* Check write protection. */ | |
3953 | ||
fe03522b | 3954 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 3955 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
3956 | |
3957 | /* Find privilege bits */ | |
986ffb24 | 3958 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3959 | if (! (status & 1)) |
3960 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3961 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3962 | return 0; /* BYPASS enabled */ | |
3963 | fab = cc$rms_fab; | |
3964 | fab.fab$b_fac = FAB$M_GET; | |
3965 | fab.fab$l_fna = filename; | |
3966 | fab.fab$b_fns = strlen (filename); | |
3967 | fab.fab$l_xab = &xab; | |
3968 | xab = cc$rms_xabpro; | |
3969 | xab.xab$l_aclbuf = aclbuf; | |
3970 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3971 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3972 | if (! (status & 1)) |
3973 | return -1; | |
986ffb24 | 3974 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 3975 | /* Check system access */ |
ea5a0917 | 3976 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
3977 | return 0; |
3978 | /* Check ACL entries, if any */ | |
3979 | acl_controlled = 0; | |
3980 | if (xab.xab$w_acllen > 0) | |
3981 | { | |
3982 | aclptr = aclbuf; | |
3983 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3984 | while (*aclptr && aclptr < aclend) | |
3985 | { | |
3986 | size = (*aclptr & 0xff) / 4; | |
3987 | typecode = (*aclptr >> 8) & 0xff; | |
3988 | if (typecode == ACE$C_KEYID) | |
3989 | for (i = size - 1; i > 1; i--) | |
3990 | if (aclptr[i] == uic) | |
3991 | { | |
3992 | acl_controlled = 1; | |
3993 | if (aclptr[1] & ACE$M_WRITE) | |
3994 | return 0; /* Write access through ACL */ | |
3995 | } | |
3996 | aclptr = &aclptr[size]; | |
3997 | } | |
3998 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3999 | return -1; | |
4000 | } | |
4001 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 4002 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 4003 | return 0; |
ea5a0917 | 4004 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 4005 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
4006 | return 0; /* Group writable */ |
4007 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 4008 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 4009 | return 0; /* Owner writable */ |
86a5659e | 4010 | |
ea5a0917 | 4011 | return -1; /* Not writable */ |
86a5659e JB |
4012 | } |
4013 | #endif /* not VMS4_4 */ | |
4014 | #endif /* access */ | |
4015 | ||
4016 | static char vtbuf[NAM$C_MAXRSS+1]; | |
4017 | ||
4018 | /* translate a vms file spec to a unix path */ | |
4019 | char * | |
4020 | sys_translate_vms (vfile) | |
4021 | char * vfile; | |
4022 | { | |
4023 | char * p; | |
4024 | char * targ; | |
4025 | ||
4026 | if (!vfile) | |
4027 | return 0; | |
4028 | ||
4029 | targ = vtbuf; | |
4030 | ||
4031 | /* leading device or logical name is a root directory */ | |
4032 | if (p = strchr (vfile, ':')) | |
4033 | { | |
4034 | *targ++ = '/'; | |
4035 | while (vfile < p) | |
4036 | *targ++ = *vfile++; | |
4037 | vfile++; | |
4038 | *targ++ = '/'; | |
4039 | } | |
4040 | p = vfile; | |
4041 | if (*p == '[' || *p == '<') | |
4042 | { | |
4043 | while (*++vfile != *p + 2) | |
4044 | switch (*vfile) | |
4045 | { | |
4046 | case '.': | |
4047 | if (vfile[-1] == *p) | |
4048 | *targ++ = '.'; | |
4049 | *targ++ = '/'; | |
4050 | break; | |
4051 | ||
4052 | case '-': | |
4053 | *targ++ = '.'; | |
4054 | *targ++ = '.'; | |
4055 | break; | |
4056 | ||
4057 | default: | |
4058 | *targ++ = *vfile; | |
4059 | break; | |
4060 | } | |
4061 | vfile++; | |
4062 | *targ++ = '/'; | |
4063 | } | |
4064 | while (*vfile) | |
4065 | *targ++ = *vfile++; | |
4066 | ||
4067 | return vtbuf; | |
4068 | } | |
4069 | ||
4070 | static char utbuf[NAM$C_MAXRSS+1]; | |
4071 | ||
4072 | /* translate a unix path to a VMS file spec */ | |
4073 | char * | |
4074 | sys_translate_unix (ufile) | |
4075 | char * ufile; | |
4076 | { | |
4077 | int slash_seen = 0; | |
4078 | char *p; | |
4079 | char * targ; | |
4080 | ||
4081 | if (!ufile) | |
4082 | return 0; | |
4083 | ||
4084 | targ = utbuf; | |
4085 | ||
4086 | if (*ufile == '/') | |
4087 | { | |
4088 | ufile++; | |
4089 | } | |
4090 | ||
4091 | while (*ufile) | |
4092 | { | |
4093 | switch (*ufile) | |
4094 | { | |
4095 | case '/': | |
4096 | if (slash_seen) | |
4097 | if (index (&ufile[1], '/')) | |
4098 | *targ++ = '.'; | |
4099 | else | |
4100 | *targ++ = ']'; | |
4101 | else | |
4102 | { | |
4103 | *targ++ = ':'; | |
4104 | if (index (&ufile[1], '/')) | |
4105 | *targ++ = '['; | |
4106 | slash_seen = 1; | |
4107 | } | |
4108 | break; | |
4109 | ||
4110 | case '.': | |
4111 | if (strncmp (ufile, "./", 2) == 0) | |
4112 | { | |
4113 | if (!slash_seen) | |
4114 | { | |
4115 | *targ++ = '['; | |
4116 | slash_seen = 1; | |
4117 | } | |
4118 | ufile++; /* skip the dot */ | |
4119 | if (index (&ufile[1], '/')) | |
4120 | *targ++ = '.'; | |
4121 | else | |
4122 | *targ++ = ']'; | |
4123 | } | |
4124 | else if (strncmp (ufile, "../", 3) == 0) | |
4125 | { | |
4126 | if (!slash_seen) | |
4127 | { | |
4128 | *targ++ = '['; | |
4129 | slash_seen = 1; | |
4130 | } | |
4131 | *targ++ = '-'; | |
4132 | ufile += 2; /* skip the dots */ | |
4133 | if (index (&ufile[1], '/')) | |
4134 | *targ++ = '.'; | |
4135 | else | |
4136 | *targ++ = ']'; | |
4137 | } | |
4138 | else | |
4139 | *targ++ = *ufile; | |
4140 | break; | |
4141 | ||
4142 | default: | |
4143 | *targ++ = *ufile; | |
4144 | break; | |
4145 | } | |
4146 | ufile++; | |
4147 | } | |
4148 | *targ = '\0'; | |
4149 | ||
4150 | return utbuf; | |
4151 | } | |
4152 | ||
4153 | char * | |
4154 | getwd (pathname) | |
4155 | char *pathname; | |
4156 | { | |
f4a7e5bd | 4157 | char *ptr, *val; |
210b2b4f | 4158 | extern char *getcwd (); |
86a5659e | 4159 | |
210b2b4f JB |
4160 | #define MAXPATHLEN 1024 |
4161 | ||
9ac0d9e0 | 4162 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4163 | val = getcwd (ptr, MAXPATHLEN); |
4164 | if (val == 0) | |
4165 | { | |
4166 | xfree (ptr); | |
4167 | return val; | |
4168 | } | |
210b2b4f | 4169 | strcpy (pathname, ptr); |
9ac0d9e0 | 4170 | xfree (ptr); |
210b2b4f JB |
4171 | |
4172 | return pathname; | |
86a5659e JB |
4173 | } |
4174 | ||
dfcf069d | 4175 | int |
86a5659e JB |
4176 | getppid () |
4177 | { | |
4178 | long item_code = JPI$_OWNER; | |
4179 | unsigned long parent_id; | |
4180 | int status; | |
4181 | ||
4182 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4183 | { | |
4184 | errno = EVMSERR; | |
4185 | vaxc$errno = status; | |
4186 | return -1; | |
4187 | } | |
4188 | return parent_id; | |
4189 | } | |
4190 | ||
4191 | #undef getuid | |
4192 | unsigned | |
4193 | sys_getuid () | |
4194 | { | |
4195 | return (getgid () << 16) | getuid (); | |
4196 | } | |
4197 | ||
4198 | int | |
4199 | sys_read (fildes, buf, nbyte) | |
4200 | int fildes; | |
4201 | char *buf; | |
4202 | unsigned int nbyte; | |
4203 | { | |
4204 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4205 | } | |
4206 | ||
4207 | #if 0 | |
4208 | int | |
4209 | sys_write (fildes, buf, nbyte) | |
4210 | int fildes; | |
4211 | char *buf; | |
4212 | unsigned int nbyte; | |
4213 | { | |
4214 | register int nwrote, rtnval = 0; | |
4215 | ||
4216 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4217 | nbyte -= nwrote; | |
4218 | buf += nwrote; | |
4219 | rtnval += nwrote; | |
4220 | } | |
4221 | if (nwrote < 0) | |
4222 | return rtnval ? rtnval : -1; | |
4223 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4224 | return rtnval ? rtnval : -1; | |
4225 | return (rtnval + nwrote); | |
4226 | } | |
4227 | #endif /* 0 */ | |
4228 | ||
4229 | /* | |
4230 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4231 | * end with a newline (carriage return) character, and if they | |
4232 | * don't it adds one (nice of it isn't it!) | |
4233 | * | |
4234 | * Thus we do this stupidity below. | |
4235 | */ | |
4236 | ||
4237 | int | |
4238 | sys_write (fildes, buf, nbytes) | |
4239 | int fildes; | |
4240 | char *buf; | |
4241 | unsigned int nbytes; | |
4242 | { | |
4243 | register char *p; | |
4244 | register char *e; | |
23b0668c JB |
4245 | int sum = 0; |
4246 | struct stat st; | |
4247 | ||
4248 | fstat (fildes, &st); | |
86a5659e | 4249 | p = buf; |
86a5659e JB |
4250 | while (nbytes > 0) |
4251 | { | |
23b0668c JB |
4252 | int len, retval; |
4253 | ||
4254 | /* Handle fixed-length files with carriage control. */ | |
4255 | if (st.st_fab_rfm == FAB$C_FIX | |
4256 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4257 | { | |
4258 | len = st.st_fab_mrs; | |
4259 | retval = write (fildes, p, min (len, nbytes)); | |
4260 | if (retval != len) | |
4261 | return -1; | |
4262 | retval++; /* This skips the implied carriage control */ | |
4263 | } | |
4264 | else | |
4265 | { | |
4266 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4267 | while (*e != '\n' && e > p) e--; | |
4268 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4269 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4270 | len = e + 1 - p; | |
4271 | retval = write (fildes, p, len); | |
4272 | if (retval != len) | |
4273 | return -1; | |
4274 | } | |
4275 | p += retval; | |
4276 | sum += retval; | |
86a5659e JB |
4277 | nbytes -= retval; |
4278 | } | |
4279 | return sum; | |
4280 | } | |
4281 | ||
4282 | /* Create file NEW copying its attributes from file OLD. If | |
4283 | OLD is 0 or does not exist, create based on the value of | |
4284 | vms_stmlf_recfm. */ | |
4285 | ||
4286 | /* Protection value the file should ultimately have. | |
4287 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4288 | static unsigned short int fab_final_pro; | |
4289 | ||
4290 | int | |
4291 | creat_copy_attrs (old, new) | |
4292 | char *old, *new; | |
4293 | { | |
4294 | struct FAB fab = cc$rms_fab; | |
4295 | struct XABPRO xabpro; | |
4296 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4297 | extern int vms_stmlf_recfm; | |
4298 | ||
4299 | if (old) | |
4300 | { | |
4301 | fab.fab$b_fac = FAB$M_GET; | |
4302 | fab.fab$l_fna = old; | |
4303 | fab.fab$b_fns = strlen (old); | |
4304 | fab.fab$l_xab = (char *) &xabpro; | |
4305 | xabpro = cc$rms_xabpro; | |
4306 | xabpro.xab$l_aclbuf = aclbuf; | |
4307 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4308 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4309 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4310 | { |
986ffb24 | 4311 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4312 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4313 | if (xabpro.xab$w_acllen > 0) | |
4314 | { | |
4315 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4316 | /* If the acl buffer was too short, redo open with longer one. | |
4317 | Wouldn't need to do this if there were some system imposed | |
4318 | limit on the size of an ACL, but I can't find any such. */ | |
4319 | { | |
4320 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4321 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4322 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4323 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4324 | else |
4325 | old = 0; | |
4326 | } | |
4327 | } | |
4328 | else | |
4329 | xabpro.xab$l_aclbuf = 0; | |
4330 | } | |
4331 | else | |
4332 | old = 0; | |
4333 | } | |
4334 | fab.fab$l_fna = new; | |
4335 | fab.fab$b_fns = strlen (new); | |
4336 | if (!old) | |
4337 | { | |
4338 | fab.fab$l_xab = 0; | |
4339 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4340 | fab.fab$b_rat = FAB$M_CR; | |
4341 | } | |
4342 | ||
4343 | /* Set the file protections such that we will be able to manipulate | |
4344 | this file. Once we are done writing and renaming it, we will set | |
4345 | the protections back. */ | |
4346 | if (old) | |
4347 | fab_final_pro = xabpro.xab$w_pro; | |
4348 | else | |
986ffb24 | 4349 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4350 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4351 | ||
4352 | /* Create the new file with either default attrs or attrs copied | |
4353 | from old file. */ | |
4354 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4355 | return -1; | |
986ffb24 | 4356 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4357 | /* As this is a "replacement" for creat, return a file descriptor |
4358 | opened for writing. */ | |
4359 | return open (new, O_WRONLY); | |
4360 | } | |
4361 | ||
4362 | #ifdef creat | |
4363 | #undef creat | |
4364 | #include <varargs.h> | |
4365 | #ifdef __GNUC__ | |
4366 | #ifndef va_count | |
4367 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4368 | #endif | |
4369 | #endif | |
4370 | ||
dfcf069d | 4371 | int |
86a5659e JB |
4372 | sys_creat (va_alist) |
4373 | va_dcl | |
4374 | { | |
eb8c3be9 | 4375 | va_list list_incrementer; |
86a5659e JB |
4376 | char *name; |
4377 | int mode; | |
4378 | int rfd; /* related file descriptor */ | |
4379 | int fd; /* Our new file descriptor */ | |
4380 | int count; | |
4381 | struct stat st_buf; | |
4382 | char rfm[12]; | |
4383 | char rat[15]; | |
4384 | char mrs[13]; | |
4385 | char fsz[13]; | |
4386 | extern int vms_stmlf_recfm; | |
4387 | ||
4388 | va_count (count); | |
eb8c3be9 JB |
4389 | va_start (list_incrementer); |
4390 | name = va_arg (list_incrementer, char *); | |
4391 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4392 | if (count > 2) |
eb8c3be9 JB |
4393 | rfd = va_arg (list_incrementer, int); |
4394 | va_end (list_incrementer); | |
86a5659e JB |
4395 | if (count > 2) |
4396 | { | |
4397 | /* Use information from the related file descriptor to set record | |
4398 | format of the newly created file. */ | |
4399 | fstat (rfd, &st_buf); | |
4400 | switch (st_buf.st_fab_rfm) | |
4401 | { | |
4402 | case FAB$C_FIX: | |
4403 | strcpy (rfm, "rfm = fix"); | |
4404 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4405 | strcpy (rat, "rat = "); | |
4406 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4407 | strcat (rat, "cr"); | |
4408 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4409 | strcat (rat, "ftn"); | |
4410 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4411 | strcat (rat, "prn"); | |
4412 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4413 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4414 | strcat (rat, ", blk"); | |
4415 | else | |
4416 | strcat (rat, "blk"); | |
4417 | return creat (name, 0, rfm, rat, mrs); | |
4418 | ||
4419 | case FAB$C_VFC: | |
4420 | strcpy (rfm, "rfm = vfc"); | |
4421 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4422 | strcpy (rat, "rat = "); | |
4423 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4424 | strcat (rat, "cr"); | |
4425 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4426 | strcat (rat, "ftn"); | |
4427 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4428 | strcat (rat, "prn"); | |
4429 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4430 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4431 | strcat (rat, ", blk"); | |
4432 | else | |
4433 | strcat (rat, "blk"); | |
4434 | return creat (name, 0, rfm, rat, fsz); | |
4435 | ||
4436 | case FAB$C_STM: | |
4437 | strcpy (rfm, "rfm = stm"); | |
4438 | break; | |
4439 | ||
4440 | case FAB$C_STMCR: | |
4441 | strcpy (rfm, "rfm = stmcr"); | |
4442 | break; | |
4443 | ||
4444 | case FAB$C_STMLF: | |
4445 | strcpy (rfm, "rfm = stmlf"); | |
4446 | break; | |
4447 | ||
4448 | case FAB$C_UDF: | |
4449 | strcpy (rfm, "rfm = udf"); | |
4450 | break; | |
4451 | ||
4452 | case FAB$C_VAR: | |
4453 | strcpy (rfm, "rfm = var"); | |
4454 | break; | |
4455 | } | |
4456 | strcpy (rat, "rat = "); | |
4457 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4458 | strcat (rat, "cr"); | |
4459 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4460 | strcat (rat, "ftn"); | |
4461 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4462 | strcat (rat, "prn"); | |
4463 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4464 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4465 | strcat (rat, ", blk"); | |
4466 | else | |
4467 | strcat (rat, "blk"); | |
4468 | } | |
4469 | else | |
4470 | { | |
4471 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4472 | strcpy (rat, "rat=cr"); | |
4473 | } | |
4474 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4475 | mode 0 to get the user's default protection. */ | |
4476 | fd = creat (name, 0, rfm, rat); | |
4477 | if (fd < 0 && errno == EEXIST) | |
4478 | { | |
4479 | if (unlink (name) < 0) | |
4480 | report_file_error ("delete", build_string (name)); | |
4481 | fd = creat (name, 0, rfm, rat); | |
4482 | } | |
4483 | return fd; | |
4484 | } | |
4485 | #endif /* creat */ | |
4486 | ||
4487 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
dfcf069d | 4488 | int |
86a5659e JB |
4489 | sys_fwrite (ptr, size, num, fp) |
4490 | register char * ptr; | |
4491 | FILE * fp; | |
4492 | { | |
4493 | register int tot = num * size; | |
4494 | ||
4495 | while (tot--) | |
4496 | fputc (*ptr++, fp); | |
dfcf069d | 4497 | return num; |
86a5659e JB |
4498 | } |
4499 | ||
4500 | /* | |
4501 | * The VMS C library routine creat actually creates a new version of an | |
4502 | * existing file rather than truncating the old version. There are times | |
4503 | * when this is not the desired behavior, for instance, when writing an | |
4504 | * auto save file (you only want one version), or when you don't have | |
4505 | * write permission in the directory containing the file (but the file | |
4506 | * itself is writable). Hence this routine, which is equivalent to | |
4507 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4508 | */ | |
4509 | int | |
4510 | vms_truncate (fn) | |
4511 | char *fn; | |
4512 | { | |
4513 | struct FAB xfab = cc$rms_fab; | |
4514 | struct RAB xrab = cc$rms_rab; | |
4515 | int status; | |
4516 | ||
4517 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4518 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4519 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4520 | xfab.fab$l_fna = fn; | |
4521 | xfab.fab$b_fns = strlen (fn); | |
4522 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4523 | xfab.fab$b_dns = 2; | |
4524 | xrab.rab$l_fab = &xfab; | |
4525 | ||
4526 | /* This gibberish opens the file, positions to the first record, and | |
4527 | deletes all records from there until the end of file. */ | |
986ffb24 | 4528 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4529 | { |
986ffb24 JB |
4530 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4531 | (SYS$FIND (&xrab) & 01) == 01 && | |
4532 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4533 | status = 0; |
4534 | else | |
4535 | status = -1; | |
4536 | } | |
4537 | else | |
4538 | status = -1; | |
986ffb24 | 4539 | SYS$CLOSE (&xfab); |
86a5659e JB |
4540 | return status; |
4541 | } | |
4542 | ||
4543 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4544 | SYSPRV or a readable SYSUAF.DAT. */ | |
4545 | ||
4546 | #ifdef READ_SYSUAF | |
4547 | /* | |
4548 | * getuaf.c | |
4549 | * | |
4550 | * Routine to read the VMS User Authorization File and return | |
4551 | * a specific user's record. | |
4552 | */ | |
4553 | ||
4554 | static struct UAF retuaf; | |
4555 | ||
4556 | struct UAF * | |
4557 | get_uaf_name (uname) | |
4558 | char * uname; | |
4559 | { | |
4560 | register status; | |
4561 | struct FAB uaf_fab; | |
4562 | struct RAB uaf_rab; | |
4563 | ||
4564 | uaf_fab = cc$rms_fab; | |
4565 | uaf_rab = cc$rms_rab; | |
4566 | /* initialize fab fields */ | |
4567 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4568 | uaf_fab.fab$b_fns = 21; | |
4569 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4570 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4571 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4572 | /* initialize rab fields */ | |
4573 | uaf_rab.rab$l_fab = &uaf_fab; | |
4574 | /* open the User Authorization File */ | |
986ffb24 | 4575 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4576 | if (!(status&1)) |
4577 | { | |
4578 | errno = EVMSERR; | |
4579 | vaxc$errno = status; | |
4580 | return 0; | |
4581 | } | |
986ffb24 | 4582 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4583 | if (!(status&1)) |
4584 | { | |
4585 | errno = EVMSERR; | |
4586 | vaxc$errno = status; | |
4587 | return 0; | |
4588 | } | |
4589 | /* read the requested record - index is in uname */ | |
4590 | uaf_rab.rab$l_kbf = uname; | |
4591 | uaf_rab.rab$b_ksz = strlen (uname); | |
4592 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4593 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4594 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4595 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4596 | if (!(status&1)) |
4597 | { | |
4598 | errno = EVMSERR; | |
4599 | vaxc$errno = status; | |
4600 | return 0; | |
4601 | } | |
4602 | /* close the User Authorization File */ | |
986ffb24 | 4603 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4604 | if (!(status&1)) |
4605 | { | |
4606 | errno = EVMSERR; | |
4607 | vaxc$errno = status; | |
4608 | return 0; | |
4609 | } | |
986ffb24 | 4610 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4611 | if (!(status&1)) |
4612 | { | |
4613 | errno = EVMSERR; | |
4614 | vaxc$errno = status; | |
4615 | return 0; | |
4616 | } | |
4617 | return &retuaf; | |
4618 | } | |
4619 | ||
4620 | struct UAF * | |
4621 | get_uaf_uic (uic) | |
4622 | unsigned long uic; | |
4623 | { | |
4624 | register status; | |
4625 | struct FAB uaf_fab; | |
4626 | struct RAB uaf_rab; | |
4627 | ||
4628 | uaf_fab = cc$rms_fab; | |
4629 | uaf_rab = cc$rms_rab; | |
4630 | /* initialize fab fields */ | |
4631 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4632 | uaf_fab.fab$b_fns = 21; | |
4633 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4634 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4635 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4636 | /* initialize rab fields */ | |
4637 | uaf_rab.rab$l_fab = &uaf_fab; | |
4638 | /* open the User Authorization File */ | |
986ffb24 | 4639 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4640 | if (!(status&1)) |
4641 | { | |
4642 | errno = EVMSERR; | |
4643 | vaxc$errno = status; | |
4644 | return 0; | |
4645 | } | |
986ffb24 | 4646 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4647 | if (!(status&1)) |
4648 | { | |
4649 | errno = EVMSERR; | |
4650 | vaxc$errno = status; | |
4651 | return 0; | |
4652 | } | |
4653 | /* read the requested record - index is in uic */ | |
4654 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4655 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4656 | uaf_rab.rab$b_ksz = sizeof uic; | |
4657 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4658 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4659 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4660 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4661 | if (!(status&1)) |
4662 | { | |
4663 | errno = EVMSERR; | |
4664 | vaxc$errno = status; | |
4665 | return 0; | |
4666 | } | |
4667 | /* close the User Authorization File */ | |
986ffb24 | 4668 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4669 | if (!(status&1)) |
4670 | { | |
4671 | errno = EVMSERR; | |
4672 | vaxc$errno = status; | |
4673 | return 0; | |
4674 | } | |
986ffb24 | 4675 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4676 | if (!(status&1)) |
4677 | { | |
4678 | errno = EVMSERR; | |
4679 | vaxc$errno = status; | |
4680 | return 0; | |
4681 | } | |
4682 | return &retuaf; | |
4683 | } | |
4684 | ||
4685 | static struct passwd retpw; | |
4686 | ||
4687 | struct passwd * | |
4688 | cnv_uaf_pw (up) | |
4689 | struct UAF * up; | |
4690 | { | |
4691 | char * ptr; | |
4692 | ||
4693 | /* copy these out first because if the username is 32 chars, the next | |
4694 | section will overwrite the first byte of the UIC */ | |
4695 | retpw.pw_uid = up->uaf$w_mem; | |
4696 | retpw.pw_gid = up->uaf$w_grp; | |
4697 | ||
ea5a0917 | 4698 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4699 | byte beyond the end of the field, but what the heck... */ |
4700 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4701 | while (ptr[-1] == ' ') | |
4702 | ptr--; | |
4703 | *ptr = '\0'; | |
4704 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4705 | ||
4706 | /* the rest of these are counted ascii strings */ | |
4707 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4708 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4709 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4710 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4711 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4712 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4713 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4714 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4715 | ||
4716 | return &retpw; | |
4717 | } | |
4718 | #else /* not READ_SYSUAF */ | |
4719 | static struct passwd retpw; | |
4720 | #endif /* not READ_SYSUAF */ | |
4721 | ||
4722 | struct passwd * | |
4723 | getpwnam (name) | |
4724 | char * name; | |
4725 | { | |
4726 | #ifdef READ_SYSUAF | |
4727 | struct UAF *up; | |
4728 | #else | |
4729 | char * user; | |
4730 | char * dir; | |
4731 | unsigned char * full; | |
4732 | #endif /* READ_SYSUAF */ | |
4733 | char *ptr = name; | |
4734 | ||
4735 | while (*ptr) | |
4736 | { | |
4737 | if ('a' <= *ptr && *ptr <= 'z') | |
4738 | *ptr -= 040; | |
4739 | ptr++; | |
4740 | } | |
4741 | #ifdef READ_SYSUAF | |
4742 | if (!(up = get_uaf_name (name))) | |
4743 | return 0; | |
4744 | return cnv_uaf_pw (up); | |
4745 | #else | |
4746 | if (strcmp (name, getenv ("USER")) == 0) | |
4747 | { | |
4748 | retpw.pw_uid = getuid (); | |
4749 | retpw.pw_gid = getgid (); | |
4750 | strcpy (retpw.pw_name, name); | |
4751 | if (full = egetenv ("FULLNAME")) | |
4752 | strcpy (retpw.pw_gecos, full); | |
4753 | else | |
4754 | *retpw.pw_gecos = '\0'; | |
4755 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4756 | *retpw.pw_shell = '\0'; | |
4757 | return &retpw; | |
4758 | } | |
4759 | else | |
4760 | return 0; | |
4761 | #endif /* not READ_SYSUAF */ | |
4762 | } | |
4763 | ||
4764 | struct passwd * | |
4765 | getpwuid (uid) | |
4766 | unsigned long uid; | |
4767 | { | |
4768 | #ifdef READ_SYSUAF | |
4769 | struct UAF * up; | |
4770 | ||
4771 | if (!(up = get_uaf_uic (uid))) | |
4772 | return 0; | |
4773 | return cnv_uaf_pw (up); | |
4774 | #else | |
4775 | if (uid == sys_getuid ()) | |
4776 | return getpwnam (egetenv ("USER")); | |
4777 | else | |
4778 | return 0; | |
4779 | #endif /* not READ_SYSUAF */ | |
4780 | } | |
4781 | ||
4782 | /* return total address space available to the current process. This is | |
4783 | the sum of the current p0 size, p1 size and free page table entries | |
4784 | available. */ | |
dfcf069d | 4785 | int |
86a5659e JB |
4786 | vlimit () |
4787 | { | |
4788 | int item_code; | |
4789 | unsigned long free_pages; | |
4790 | unsigned long frep0va; | |
4791 | unsigned long frep1va; | |
4792 | register status; | |
4793 | ||
4794 | item_code = JPI$_FREPTECNT; | |
4795 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4796 | { | |
4797 | errno = EVMSERR; | |
4798 | vaxc$errno = status; | |
4799 | return -1; | |
4800 | } | |
4801 | free_pages *= 512; | |
4802 | ||
4803 | item_code = JPI$_FREP0VA; | |
4804 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4805 | { | |
4806 | errno = EVMSERR; | |
4807 | vaxc$errno = status; | |
4808 | return -1; | |
4809 | } | |
4810 | item_code = JPI$_FREP1VA; | |
4811 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4812 | { | |
4813 | errno = EVMSERR; | |
4814 | vaxc$errno = status; | |
4815 | return -1; | |
4816 | } | |
4817 | ||
4818 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4819 | } | |
4820 | ||
dfcf069d | 4821 | int |
86a5659e JB |
4822 | define_logical_name (varname, string) |
4823 | char *varname; | |
4824 | char *string; | |
4825 | { | |
4826 | struct dsc$descriptor_s strdsc = | |
4827 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4828 | struct dsc$descriptor_s envdsc = | |
4829 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4830 | struct dsc$descriptor_s lnmdsc = | |
4831 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4832 | ||
4833 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4834 | } | |
4835 | ||
dfcf069d | 4836 | int |
86a5659e JB |
4837 | delete_logical_name (varname) |
4838 | char *varname; | |
4839 | { | |
4840 | struct dsc$descriptor_s envdsc = | |
4841 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4842 | struct dsc$descriptor_s lnmdsc = | |
4843 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4844 | ||
4845 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4846 | } | |
4847 | ||
dfcf069d | 4848 | int |
86a5659e | 4849 | ulimit () |
dfcf069d AS |
4850 | { |
4851 | return 0; | |
4852 | } | |
86a5659e | 4853 | |
dfcf069d | 4854 | int |
86a5659e | 4855 | setpgrp () |
dfcf069d AS |
4856 | { |
4857 | return 0; | |
4858 | } | |
86a5659e | 4859 | |
dfcf069d | 4860 | int |
86a5659e JB |
4861 | execvp () |
4862 | { | |
4863 | error ("execvp system call not implemented"); | |
dfcf069d | 4864 | return -1; |
86a5659e JB |
4865 | } |
4866 | ||
4867 | int | |
4868 | rename (from, to) | |
4869 | char *from, *to; | |
4870 | { | |
4871 | int status; | |
4872 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4873 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4874 | char from_esn[NAM$C_MAXRSS]; | |
4875 | char to_esn[NAM$C_MAXRSS]; | |
4876 | ||
4877 | from_fab.fab$l_fna = from; | |
4878 | from_fab.fab$b_fns = strlen (from); | |
4879 | from_fab.fab$l_nam = &from_nam; | |
4880 | from_fab.fab$l_fop = FAB$M_NAM; | |
4881 | ||
4882 | from_nam.nam$l_esa = from_esn; | |
4883 | from_nam.nam$b_ess = sizeof from_esn; | |
4884 | ||
4885 | to_fab.fab$l_fna = to; | |
4886 | to_fab.fab$b_fns = strlen (to); | |
4887 | to_fab.fab$l_nam = &to_nam; | |
4888 | to_fab.fab$l_fop = FAB$M_NAM; | |
4889 | ||
4890 | to_nam.nam$l_esa = to_esn; | |
4891 | to_nam.nam$b_ess = sizeof to_esn; | |
4892 | ||
4893 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4894 | ||
4895 | if (status & 1) | |
4896 | return 0; | |
4897 | else | |
4898 | { | |
4899 | if (status == RMS$_DEV) | |
4900 | errno = EXDEV; | |
4901 | else | |
4902 | errno = EVMSERR; | |
4903 | vaxc$errno = status; | |
4904 | return -1; | |
4905 | } | |
4906 | } | |
4907 | ||
4908 | /* This function renames a file like `rename', but it strips | |
4909 | the version number from the "to" filename, such that the "to" file is | |
4910 | will always be a new version. It also sets the file protection once it is | |
4911 | finished. The protection that we will use is stored in fab_final_pro, | |
4912 | and was set when we did a creat_copy_attrs to create the file that we | |
4913 | are renaming. | |
4914 | ||
4915 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4916 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4917 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4918 | the W and D bits together. */ | |
4919 | ||
4920 | ||
4921 | static struct fibdef fib; /* We need this initialized to zero */ | |
4922 | char vms_file_written[NAM$C_MAXRSS]; | |
4923 | ||
4924 | int | |
4925 | rename_sans_version (from,to) | |
4926 | char *from, *to; | |
4927 | { | |
4928 | short int chan; | |
4929 | int stat; | |
4930 | short int iosb[4]; | |
4931 | int status; | |
4932 | struct FAB to_fab = cc$rms_fab; | |
4933 | struct NAM to_nam = cc$rms_nam; | |
4934 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4935 | struct dsc$descriptor fib_attr[2] | |
4936 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4937 | char to_esn[NAM$C_MAXRSS]; | |
4938 | ||
4939 | $DESCRIPTOR (disk,to_esn); | |
4940 | ||
4941 | to_fab.fab$l_fna = to; | |
4942 | to_fab.fab$b_fns = strlen (to); | |
4943 | to_fab.fab$l_nam = &to_nam; | |
4944 | to_fab.fab$l_fop = FAB$M_NAM; | |
4945 | ||
4946 | to_nam.nam$l_esa = to_esn; | |
4947 | to_nam.nam$b_ess = sizeof to_esn; | |
4948 | ||
4949 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4950 | ||
4951 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4952 | *(to_nam.nam$l_ver) = '\0'; | |
4953 | ||
4954 | stat = rename (from, to_esn); | |
4955 | if (stat < 0) | |
4956 | return stat; | |
4957 | ||
4958 | strcpy (vms_file_written, to_esn); | |
4959 | ||
4960 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4961 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4962 | ||
4963 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4964 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4965 | |
4966 | /* Copy these fields into the fib */ | |
4967 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4968 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4969 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4970 | ||
986ffb24 | 4971 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4972 | |
986ffb24 | 4973 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4974 | if (!stat) |
986ffb24 JB |
4975 | LIB$SIGNAL (stat); |
4976 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4977 | 0, 0, 0, &fib_attr, 0); |
4978 | if (!stat) | |
986ffb24 JB |
4979 | LIB$SIGNAL (stat); |
4980 | stat = SYS$DASSGN (chan); | |
86a5659e | 4981 | if (!stat) |
986ffb24 | 4982 | LIB$SIGNAL (stat); |
0137dbf7 | 4983 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4984 | return 0; |
4985 | } | |
4986 | ||
dfcf069d | 4987 | int |
86a5659e JB |
4988 | link (file, new) |
4989 | char * file, * new; | |
4990 | { | |
4991 | register status; | |
4992 | struct FAB fab; | |
4993 | struct NAM nam; | |
4994 | unsigned short fid[3]; | |
4995 | char esa[NAM$C_MAXRSS]; | |
4996 | ||
4997 | fab = cc$rms_fab; | |
4998 | fab.fab$l_fop = FAB$M_OFP; | |
4999 | fab.fab$l_fna = file; | |
5000 | fab.fab$b_fns = strlen (file); | |
5001 | fab.fab$l_nam = &nam; | |
5002 | ||
5003 | nam = cc$rms_nam; | |
5004 | nam.nam$l_esa = esa; | |
5005 | nam.nam$b_ess = NAM$C_MAXRSS; | |
5006 | ||
5007 | status = SYS$PARSE (&fab); | |
5008 | if ((status & 1) == 0) | |
5009 | { | |
5010 | errno = EVMSERR; | |
5011 | vaxc$errno = status; | |
5012 | return -1; | |
5013 | } | |
5014 | status = SYS$SEARCH (&fab); | |
5015 | if ((status & 1) == 0) | |
5016 | { | |
5017 | errno = EVMSERR; | |
5018 | vaxc$errno = status; | |
5019 | return -1; | |
5020 | } | |
5021 | ||
5022 | fid[0] = nam.nam$w_fid[0]; | |
5023 | fid[1] = nam.nam$w_fid[1]; | |
5024 | fid[2] = nam.nam$w_fid[2]; | |
5025 | ||
5026 | fab.fab$l_fna = new; | |
5027 | fab.fab$b_fns = strlen (new); | |
5028 | ||
5029 | status = SYS$PARSE (&fab); | |
5030 | if ((status & 1) == 0) | |
5031 | { | |
5032 | errno = EVMSERR; | |
5033 | vaxc$errno = status; | |
5034 | return -1; | |
5035 | } | |
5036 | ||
5037 | nam.nam$w_fid[0] = fid[0]; | |
5038 | nam.nam$w_fid[1] = fid[1]; | |
5039 | nam.nam$w_fid[2] = fid[2]; | |
5040 | ||
5041 | nam.nam$l_esa = nam.nam$l_name; | |
5042 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
5043 | ||
5044 | status = SYS$ENTER (&fab); | |
5045 | if ((status & 1) == 0) | |
5046 | { | |
5047 | errno = EVMSERR; | |
5048 | vaxc$errno = status; | |
5049 | return -1; | |
5050 | } | |
5051 | ||
5052 | return 0; | |
5053 | } | |
5054 | ||
dfcf069d | 5055 | void |
86a5659e JB |
5056 | croak (badfunc) |
5057 | char *badfunc; | |
5058 | { | |
5059 | printf ("%s not yet implemented\r\n", badfunc); | |
5060 | reset_sys_modes (); | |
5061 | exit (1); | |
5062 | } | |
5063 | ||
5064 | long | |
5065 | random () | |
5066 | { | |
5067 | /* Arrange to return a range centered on zero. */ | |
5068 | return rand () - (1 << 30); | |
5069 | } | |
5070 | ||
dfcf069d | 5071 | void |
86a5659e JB |
5072 | srandom (seed) |
5073 | { | |
5074 | srand (seed); | |
5075 | } | |
5076 | #endif /* VMS */ | |
5077 | \f | |
b97ab886 | 5078 | #ifdef AIXHFT |
86a5659e JB |
5079 | |
5080 | /* Called from init_sys_modes. */ | |
dfcf069d | 5081 | void |
86a5659e JB |
5082 | hft_init () |
5083 | { | |
5084 | int junk; | |
5085 | ||
5086 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5087 | if we are on an HFT by trying to get an HFT error code. If this | |
5088 | call fails, we're not on an HFT. */ | |
5089 | #ifdef IBMR2AIX | |
5090 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5091 | return; | |
5092 | #else /* not IBMR2AIX */ | |
5093 | if (ioctl (0, HFQEIO, 0) < 0) | |
5094 | return; | |
5095 | #endif /* not IBMR2AIX */ | |
5096 | ||
5097 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5098 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5099 | there's no way to determine the old mapping, so in reset_sys_modes | |
5100 | we need to assume that the normal map had been present. Of course, this | |
5101 | code also doesn't help if on a terminal emulator which doesn't understand | |
5102 | HFT VTD's. */ | |
5103 | { | |
5104 | struct hfbuf buf; | |
5105 | struct hfkeymap keymap; | |
5106 | ||
5107 | buf.hf_bufp = (char *)&keymap; | |
5108 | buf.hf_buflen = sizeof (keymap); | |
5109 | keymap.hf_nkeys = 2; | |
5110 | keymap.hfkey[0].hf_kpos = 15; | |
5111 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5112 | #ifdef IBMR2AIX | |
5113 | keymap.hfkey[0].hf_keyidh = '<'; | |
5114 | #else /* not IBMR2AIX */ | |
5115 | keymap.hfkey[0].hf_page = '<'; | |
5116 | #endif /* not IBMR2AIX */ | |
5117 | keymap.hfkey[0].hf_char = 127; | |
5118 | keymap.hfkey[1].hf_kpos = 15; | |
5119 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5120 | #ifdef IBMR2AIX | |
5121 | keymap.hfkey[1].hf_keyidh = '<'; | |
5122 | #else /* not IBMR2AIX */ | |
5123 | keymap.hfkey[1].hf_page = '<'; | |
5124 | #endif /* not IBMR2AIX */ | |
5125 | keymap.hfkey[1].hf_char = 127; | |
5126 | hftctl (0, HFSKBD, &buf); | |
5127 | } | |
5128 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
5129 | at times. */ | |
5130 | line_ins_del_ok = char_ins_del_ok = 0; | |
5131 | } | |
5132 | ||
5133 | /* Reset the rubout key to backspace. */ | |
5134 | ||
dfcf069d | 5135 | void |
86a5659e JB |
5136 | hft_reset () |
5137 | { | |
5138 | struct hfbuf buf; | |
5139 | struct hfkeymap keymap; | |
5140 | int junk; | |
5141 | ||
5142 | #ifdef IBMR2AIX | |
5143 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5144 | return; | |
5145 | #else /* not IBMR2AIX */ | |
5146 | if (ioctl (0, HFQEIO, 0) < 0) | |
5147 | return; | |
5148 | #endif /* not IBMR2AIX */ | |
5149 | ||
5150 | buf.hf_bufp = (char *)&keymap; | |
5151 | buf.hf_buflen = sizeof (keymap); | |
5152 | keymap.hf_nkeys = 2; | |
5153 | keymap.hfkey[0].hf_kpos = 15; | |
5154 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5155 | #ifdef IBMR2AIX | |
5156 | keymap.hfkey[0].hf_keyidh = '<'; | |
5157 | #else /* not IBMR2AIX */ | |
5158 | keymap.hfkey[0].hf_page = '<'; | |
5159 | #endif /* not IBMR2AIX */ | |
5160 | keymap.hfkey[0].hf_char = 8; | |
5161 | keymap.hfkey[1].hf_kpos = 15; | |
5162 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5163 | #ifdef IBMR2AIX | |
5164 | keymap.hfkey[1].hf_keyidh = '<'; | |
5165 | #else /* not IBMR2AIX */ | |
5166 | keymap.hfkey[1].hf_page = '<'; | |
5167 | #endif /* not IBMR2AIX */ | |
5168 | keymap.hfkey[1].hf_char = 8; | |
5169 | hftctl (0, HFSKBD, &buf); | |
5170 | } | |
5171 | ||
b97ab886 | 5172 | #endif /* AIXHFT */ |
c238be24 RS |
5173 | |
5174 | #ifdef USE_DL_STUBS | |
5175 | ||
5176 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5177 | X11 libraries may refer to these functions but (we hope) do not | |
5178 | actually call them. */ | |
5179 | ||
5180 | void * | |
5181 | dlopen () | |
5182 | { | |
5183 | return 0; | |
5184 | } | |
5185 | ||
5186 | void * | |
5187 | dlsym () | |
5188 | { | |
5189 | return 0; | |
5190 | } | |
5191 | ||
5192 | int | |
5193 | dlclose () | |
5194 | { | |
5195 | return -1; | |
5196 | } | |
5197 | ||
5198 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5199 | \f |
5200 | #ifndef BSTRING | |
5201 | ||
5202 | #ifndef bzero | |
5203 | ||
5204 | void | |
5205 | bzero (b, length) | |
5206 | register char *b; | |
5207 | register int length; | |
5208 | { | |
5209 | #ifdef VMS | |
5210 | short zero = 0; | |
5211 | long max_str = 65535; | |
5212 | ||
5213 | while (length > max_str) { | |
5214 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5215 | length -= max_str; | |
5216 | b += max_str; | |
5217 | } | |
5218 | max_str = length; | |
5219 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5220 | #else | |
5221 | while (length-- > 0) | |
5222 | *b++ = 0; | |
5223 | #endif /* not VMS */ | |
5224 | } | |
5225 | ||
5226 | #endif /* no bzero */ | |
5227 | #endif /* BSTRING */ | |
5228 | ||
c7f93f28 | 5229 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5230 | #undef bcopy |
5231 | ||
5232 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5233 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5234 | bcopy (b1, b2, length) | |
5235 | register char *b1; | |
5236 | register char *b2; | |
5237 | register int length; | |
5238 | { | |
5239 | #ifdef VMS | |
5240 | long max_str = 65535; | |
5241 | ||
5242 | while (length > max_str) { | |
5243 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5244 | length -= max_str; | |
5245 | b1 += max_str; | |
5246 | b2 += max_str; | |
5247 | } | |
5248 | max_str = length; | |
5249 | (void) LIB$MOVC3 (&length, b1, b2); | |
5250 | #else | |
5251 | while (length-- > 0) | |
5252 | *b2++ = *b1++; | |
5253 | #endif /* not VMS */ | |
5254 | } | |
dfcf069d | 5255 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ |
51417996 | 5256 | |
c7f93f28 | 5257 | #ifndef BSTRING |
51417996 RS |
5258 | #ifndef bcmp |
5259 | int | |
5260 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5261 | register char *b1; | |
5262 | register char *b2; | |
5263 | register int length; | |
5264 | { | |
5265 | #ifdef VMS | |
5266 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5267 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5268 | ||
5269 | return STR$COMPARE (&src1, &src2); | |
5270 | #else | |
5271 | while (length-- > 0) | |
5272 | if (*b1++ != *b2++) | |
5273 | return 1; | |
5274 | ||
5275 | return 0; | |
5276 | #endif /* not VMS */ | |
5277 | } | |
5278 | #endif /* no bcmp */ | |
5279 | #endif /* not BSTRING */ |