Commit | Line | Data |
---|---|---|
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> |
86a5659e | 26 | #include "lisp.h" |
9ac0d9e0 | 27 | #include "blockinput.h" |
86a5659e JB |
28 | #undef NULL |
29 | ||
30 | #define min(x,y) ((x) > (y) ? (y) : (x)) | |
31 | ||
32 | /* In this file, open, read and write refer to the system calls, | |
33 | not our sugared interfaces sys_open, sys_read and sys_write. | |
34 | Contrariwise, for systems where we use the system calls directly, | |
35 | define sys_read, etc. here as aliases for them. */ | |
36 | #ifndef read | |
37 | #define sys_read read | |
38 | #define sys_write write | |
39 | #endif /* `read' is not a macro */ | |
40 | ||
41 | #undef read | |
42 | #undef write | |
43 | ||
fe03522b RS |
44 | #ifdef WINDOWSNT |
45 | #define read _read | |
46 | #define write _write | |
47 | #include <windows.h> | |
48 | extern int errno; | |
49 | #endif /* not WINDOWSNT */ | |
50 | ||
86a5659e JB |
51 | #ifndef close |
52 | #define sys_close close | |
53 | #else | |
54 | #undef close | |
55 | #endif | |
56 | ||
57 | #ifndef open | |
58 | #define sys_open open | |
59 | #else /* `open' is a macro */ | |
60 | #undef open | |
61 | #endif /* `open' is a macro */ | |
62 | ||
986ffb24 JB |
63 | /* Does anyone other than VMS need this? */ |
64 | #ifndef fwrite | |
65 | #define sys_fwrite fwrite | |
66 | #else | |
67 | #undef fwrite | |
68 | #endif | |
69 | ||
e24f1d55 RS |
70 | #ifndef HAVE_H_ERRNO |
71 | extern int h_errno; | |
72 | #endif | |
73 | ||
86a5659e JB |
74 | #include <stdio.h> |
75 | #include <sys/types.h> | |
76 | #include <sys/stat.h> | |
77 | #include <errno.h> | |
78 | ||
dca8521c RS |
79 | /* Get _POSIX_VDISABLE, if it is available. */ |
80 | #ifdef HAVE_UNISTD_H | |
81 | #include <unistd.h> | |
82 | #endif | |
83 | ||
b05af5d3 PE |
84 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
85 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
86 | #include <sys/systeminfo.h> | |
87 | #endif | |
88 | ||
207bdbdb RS |
89 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
90 | #include <dos.h> | |
91 | #include "dosfns.h" | |
92 | #include "msdos.h" | |
93 | #include <sys/param.h> | |
15614e61 RS |
94 | |
95 | #if __DJGPP__ > 1 | |
96 | extern int etext; | |
97 | extern unsigned start __asm__ ("start"); | |
98 | #endif | |
207bdbdb RS |
99 | #endif |
100 | ||
86a5659e | 101 | extern int errno; |
86a5659e | 102 | |
bb4bc8e2 RM |
103 | #ifdef VMS |
104 | #include <rms.h> | |
105 | #include <ttdef.h> | |
106 | #include <tt2def.h> | |
107 | #include <iodef.h> | |
108 | #include <ssdef.h> | |
109 | #include <descrip.h> | |
110 | #include <fibdef.h> | |
111 | #include <atrdef.h> | |
112 | #include <ctype.h> | |
113 | #include <string.h> | |
114 | #ifdef __GNUC__ | |
115 | #include <sys/file.h> | |
116 | #else | |
117 | #include <file.h> | |
118 | #endif | |
119 | #undef F_SETFL | |
120 | #ifndef RAB$C_BID | |
121 | #include <rab.h> | |
122 | #endif | |
fe03522b | 123 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
124 | #endif /* VMS */ |
125 | ||
126 | #ifndef BSD4_1 | |
2a633456 | 127 | #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG) |
bb4bc8e2 RM |
128 | because the vms compiler doesn't grok `defined' */ |
129 | #include <fcntl.h> | |
130 | #endif | |
131 | #ifdef USG | |
132 | #ifndef USG5 | |
133 | #include <fcntl.h> | |
134 | #endif | |
135 | #endif | |
136 | #endif /* not 4.1 bsd */ | |
86a5659e | 137 | |
207bdbdb | 138 | #ifndef MSDOS |
86a5659e | 139 | #include <sys/ioctl.h> |
207bdbdb | 140 | #endif |
2a633456 | 141 | |
e04a4e0d | 142 | #include "systty.h" |
94c8642a | 143 | #include "syswait.h" |
86a5659e | 144 | |
86a5659e JB |
145 | #ifdef BROKEN_TIOCGWINSZ |
146 | #undef TIOCGWINSZ | |
8dca3179 | 147 | #undef TIOCSWINSZ |
86a5659e JB |
148 | #endif |
149 | ||
b917b2e2 | 150 | #if defined(USG) || defined(DGUX) |
86a5659e JB |
151 | #include <sys/utsname.h> |
152 | #include <string.h> | |
153 | #ifndef MEMORY_IN_STRING_H | |
154 | #include <memory.h> | |
155 | #endif | |
81444907 | 156 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
157 | #ifdef NEED_SIOCTL |
158 | #include <sys/sioctl.h> | |
159 | #endif | |
160 | #ifdef NEED_PTEM_H | |
161 | #include <sys/stream.h> | |
162 | #include <sys/ptem.h> | |
163 | #endif | |
81444907 | 164 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 165 | #endif /* USG or DGUX */ |
86a5659e | 166 | |
86a5659e JB |
167 | extern int quit_char; |
168 | ||
0137dbf7 | 169 | #include "frame.h" |
86a5659e JB |
170 | #include "window.h" |
171 | #include "termhooks.h" | |
172 | #include "termchar.h" | |
173 | #include "termopts.h" | |
174 | #include "dispextern.h" | |
175 | #include "process.h" | |
176 | ||
fe03522b RS |
177 | #ifdef WINDOWSNT |
178 | #include <direct.h> | |
179 | /* In process.h which conflicts with the local copy. */ | |
180 | #define _P_WAIT 0 | |
181 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
182 | int _CRTAPI1 _getpid (void); | |
183 | #endif | |
184 | ||
86a5659e JB |
185 | #ifdef NONSYSTEM_DIR_LIBRARY |
186 | #include "ndir.h" | |
187 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
188 | ||
91bac16a JB |
189 | #include "syssignal.h" |
190 | #include "systime.h" | |
d79998bc KH |
191 | #ifdef HAVE_UTIME_H |
192 | #include <utime.h> | |
193 | #endif | |
194 | ||
195 | #ifndef HAVE_UTIMES | |
196 | #ifndef HAVE_STRUCT_UTIMBUF | |
197 | /* We want to use utime rather than utimes, but we couldn't find the | |
198 | structure declaration. We'll use the traditional one. */ | |
199 | struct utimbuf { | |
200 | long actime; | |
201 | long modtime; | |
202 | }; | |
203 | #endif | |
204 | #endif | |
86a5659e | 205 | |
e336874b KH |
206 | #ifndef VFORK_RETURN_TYPE |
207 | #define VFORK_RETURN_TYPE int | |
208 | #endif | |
209 | ||
a00d5589 RS |
210 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
211 | #ifndef LPASS8 | |
212 | #define LPASS8 0 | |
213 | #endif | |
214 | ||
215 | #ifdef BSD4_1 | |
216 | #define LNOFLSH 0100000 | |
217 | #endif | |
218 | ||
86a5659e JB |
219 | static int baud_convert[] = |
220 | #ifdef BAUD_CONVERT | |
221 | BAUD_CONVERT; | |
222 | #else | |
223 | { | |
224 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
225 | 1800, 2400, 4800, 9600, 19200, 38400 | |
226 | }; | |
227 | #endif | |
228 | ||
ba5971b3 RS |
229 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
230 | extern short ospeed; | |
231 | #else | |
515b04d0 RS |
232 | #if defined (HAVE_TERMIOS_H) && defined (LINUX) |
233 | #include <termios.h> | |
825e7e55 RS |
234 | /* HJL's version of libc is said to need this on the Alpha. |
235 | On the other hand, DEC OSF1 on the Alpha needs ospeed to be a short. */ | |
f2361c60 RS |
236 | extern speed_t ospeed; |
237 | #else | |
9f80a1c8 | 238 | extern short ospeed; |
f2361c60 | 239 | #endif |
ba5971b3 | 240 | #endif |
86a5659e | 241 | |
91bac16a | 242 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
243 | Under Unix, this is normally zero except when using X; |
244 | under VMS, we place the input channel number here. */ | |
245 | int input_fd; | |
64e971c3 RS |
246 | \f |
247 | /* Specify a different file descriptor for further input operations. */ | |
248 | ||
249 | void | |
250 | change_input_fd (fd) | |
251 | int fd; | |
252 | { | |
253 | input_fd = fd; | |
254 | } | |
255 | ||
256 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 257 | |
08633194 | 258 | void |
86a5659e JB |
259 | discard_tty_input () |
260 | { | |
fe03522b | 261 | #ifndef WINDOWSNT |
91bac16a | 262 | struct emacs_tty buf; |
86a5659e JB |
263 | |
264 | if (noninteractive) | |
265 | return; | |
266 | ||
267 | /* Discarding input is not safe when the input could contain | |
268 | replies from the X server. So don't do it. */ | |
269 | if (read_socket_hook) | |
270 | return; | |
271 | ||
272 | #ifdef VMS | |
273 | end_kbd_input (); | |
91bac16a JB |
274 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
275 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
276 | queue_kbd_input (); |
277 | #else /* not VMS */ | |
278 | #ifdef APOLLO | |
279 | { | |
280 | int zero = 0; | |
64e971c3 | 281 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
282 | } |
283 | #else /* not Apollo */ | |
fe03522b | 284 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 285 | while (dos_keyread () != -1) |
fe03522b | 286 | ; |
207bdbdb | 287 | #else /* not MSDOS */ |
91bac16a JB |
288 | EMACS_GET_TTY (input_fd, &buf); |
289 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 290 | #endif /* not MSDOS */ |
86a5659e JB |
291 | #endif /* not Apollo */ |
292 | #endif /* not VMS */ | |
fe03522b | 293 | #endif /* not WINDOWSNT */ |
86a5659e JB |
294 | } |
295 | ||
296 | #ifdef SIGTSTP | |
297 | ||
64e971c3 RS |
298 | /* Arrange for character C to be read as the next input from |
299 | the terminal. */ | |
300 | ||
dfcf069d | 301 | void |
86a5659e JB |
302 | stuff_char (c) |
303 | char c; | |
304 | { | |
23dab951 RS |
305 | if (read_socket_hook) |
306 | return; | |
307 | ||
86a5659e JB |
308 | /* Should perhaps error if in batch mode */ |
309 | #ifdef TIOCSTI | |
64e971c3 | 310 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 311 | #else /* no TIOCSTI */ |
71f06467 | 312 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
313 | #endif /* no TIOCSTI */ |
314 | } | |
315 | ||
316 | #endif /* SIGTSTP */ | |
64e971c3 | 317 | \f |
08633194 | 318 | void |
86a5659e JB |
319 | init_baud_rate () |
320 | { | |
86a5659e JB |
321 | if (noninteractive) |
322 | ospeed = 0; | |
323 | else | |
324 | { | |
dfc366c9 RS |
325 | #ifdef INIT_BAUD_RATE |
326 | INIT_BAUD_RATE (); | |
327 | #else | |
fe03522b | 328 | #ifdef DOS_NT |
207bdbdb | 329 | ospeed = 15; |
fe03522b | 330 | #else /* not DOS_NT */ |
86a5659e | 331 | #ifdef VMS |
91bac16a JB |
332 | struct sensemode sg; |
333 | ||
334 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 335 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
336 | ospeed = sg.xmit_baud; |
337 | #else /* not VMS */ | |
e04a4e0d JB |
338 | #ifdef HAVE_TERMIOS |
339 | struct termios sg; | |
91bac16a | 340 | |
71f06467 | 341 | sg.c_cflag = B9600; |
64e971c3 | 342 | tcgetattr (input_fd, &sg); |
d7272cff | 343 | ospeed = cfgetospeed (&sg); |
5baff9ce | 344 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b RS |
345 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
346 | if (ospeed == 0) | |
347 | ospeed = getobaud (sg.c_cflag); | |
348 | #endif | |
e04a4e0d JB |
349 | #else /* neither VMS nor TERMIOS */ |
350 | #ifdef HAVE_TERMIO | |
351 | struct termio sg; | |
91bac16a | 352 | |
71f06467 | 353 | sg.c_cflag = B9600; |
e04a4e0d | 354 | #ifdef HAVE_TCATTR |
64e971c3 | 355 | tcgetattr (input_fd, &sg); |
e04a4e0d | 356 | #else |
6c65530f | 357 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 358 | #endif |
91bac16a | 359 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 360 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
361 | struct sgttyb sg; |
362 | ||
363 | sg.sg_ospeed = B9600; | |
64e971c3 | 364 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 365 | abort (); |
91bac16a | 366 | ospeed = sg.sg_ospeed; |
91bac16a | 367 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 368 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 369 | #endif /* not VMS */ |
fe03522b | 370 | #endif /* not DOS_NT */ |
dfc366c9 | 371 | #endif /* not INIT_BAUD_RATE */ |
86a5659e JB |
372 | } |
373 | ||
374 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
fe03522b | 375 | ? baud_convert[ospeed] : 9600); |
86a5659e JB |
376 | if (baud_rate == 0) |
377 | baud_rate = 1200; | |
378 | } | |
379 | ||
380 | /*ARGSUSED*/ | |
dfcf069d | 381 | void |
86a5659e JB |
382 | set_exclusive_use (fd) |
383 | int fd; | |
384 | { | |
385 | #ifdef FIOCLEX | |
386 | ioctl (fd, FIOCLEX, 0); | |
387 | #endif | |
388 | /* Ok to do nothing if this feature does not exist */ | |
389 | } | |
64e971c3 | 390 | \f |
86a5659e JB |
391 | #ifndef subprocesses |
392 | ||
393 | wait_without_blocking () | |
394 | { | |
2a633456 | 395 | #ifdef BSD_SYSTEM |
86a5659e JB |
396 | wait3 (0, WNOHANG | WUNTRACED, 0); |
397 | #else | |
398 | croak ("wait_without_blocking"); | |
399 | #endif | |
400 | synch_process_alive = 0; | |
401 | } | |
402 | ||
403 | #endif /* not subprocesses */ | |
404 | ||
405 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 406 | (at least for bsd). */ |
86a5659e JB |
407 | |
408 | SIGTYPE | |
409 | wait_for_termination_signal () | |
410 | {} | |
411 | ||
412 | /* Wait for subprocess with process id `pid' to terminate and | |
413 | make sure it will get eliminated (not remain forever as a zombie) */ | |
414 | ||
08633194 | 415 | void |
86a5659e JB |
416 | wait_for_termination (pid) |
417 | int pid; | |
418 | { | |
419 | while (1) | |
420 | { | |
421 | #ifdef subprocesses | |
422 | #ifdef VMS | |
423 | int status; | |
424 | ||
986ffb24 | 425 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
426 | break; |
427 | #else /* not VMS */ | |
2a633456 | 428 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
429 | /* Note that kill returns -1 even if the process is just a zombie now. |
430 | But inevitably a SIGCHLD interrupt should be generated | |
431 | and child_sig will do wait3 and make the process go away. */ | |
432 | /* There is some indication that there is a bug involved with | |
433 | termination of subprocesses, perhaps involving a kernel bug too, | |
434 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
435 | if that causes the problem to go away or get worse. */ | |
436 | sigsetmask (sigmask (SIGCHLD)); | |
437 | if (0 > kill (pid, 0)) | |
fe03522b | 438 | { |
4c8975ad RS |
439 | sigsetmask (SIGEMPTYMASK); |
440 | kill (getpid (), SIGCHLD); | |
441 | break; | |
442 | } | |
443 | if (wait_debugging) | |
444 | sleep (1); | |
445 | else | |
446 | sigpause (SIGEMPTYMASK); | |
2a633456 | 447 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 448 | #if defined (UNIPLUS) |
4c8975ad RS |
449 | if (0 > kill (pid, 0)) |
450 | break; | |
451 | wait (0); | |
2a633456 | 452 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
fe03522b | 453 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
9ab714c7 RS |
454 | sigblock (sigmask (SIGCHLD)); |
455 | if (0 > kill (pid, 0)) | |
456 | { | |
457 | sigunblock (sigmask (SIGCHLD)); | |
458 | break; | |
459 | } | |
92c995de | 460 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 461 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
462 | #ifdef HAVE_SYSV_SIGPAUSE |
463 | sighold (SIGCHLD); | |
464 | if (0 > kill (pid, 0)) | |
465 | { | |
466 | sigrelse (SIGCHLD); | |
467 | break; | |
468 | } | |
469 | sigpause (SIGCHLD); | |
470 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
471 | #ifdef WINDOWSNT |
472 | wait (0); | |
473 | break; | |
474 | #else /* not WINDOWSNT */ | |
4c8975ad | 475 | if (0 > kill (pid, 0)) |
86a5659e | 476 | break; |
4c8975ad RS |
477 | /* Using sleep instead of pause avoids timing error. |
478 | If the inferior dies just before the sleep, | |
479 | we lose just one second. */ | |
480 | sleep (1); | |
fe03522b | 481 | #endif /* not WINDOWSNT */ |
4c8975ad | 482 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 483 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 484 | #endif /* not UNIPLUS */ |
2a633456 | 485 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
486 | #endif /* not VMS */ |
487 | #else /* not subprocesses */ | |
15614e61 RS |
488 | #if __DJGPP__ > 1 |
489 | break; | |
490 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
491 | #ifndef BSD4_1 |
492 | if (kill (pid, 0) < 0) | |
493 | break; | |
494 | wait (0); | |
495 | #else /* BSD4_1 */ | |
496 | int status; | |
497 | status = wait (0); | |
498 | if (status == pid || status == -1) | |
499 | break; | |
500 | #endif /* BSD4_1 */ | |
15614e61 | 501 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
502 | #endif /* not subprocesses */ |
503 | } | |
504 | } | |
505 | ||
506 | #ifdef subprocesses | |
507 | ||
508 | /* | |
509 | * flush any pending output | |
510 | * (may flush input as well; it does not matter the way we use it) | |
511 | */ | |
512 | ||
08633194 | 513 | void |
86a5659e JB |
514 | flush_pending_output (channel) |
515 | int channel; | |
516 | { | |
517 | #ifdef HAVE_TERMIOS | |
518 | /* If we try this, we get hit with SIGTTIN, because | |
519 | the child's tty belongs to the child's pgrp. */ | |
520 | #else | |
521 | #ifdef TCFLSH | |
522 | ioctl (channel, TCFLSH, 1); | |
523 | #else | |
524 | #ifdef TIOCFLUSH | |
525 | int zero = 0; | |
526 | /* 3rd arg should be ignored | |
527 | but some 4.2 kernels actually want the address of an int | |
528 | and nonzero means something different. */ | |
529 | ioctl (channel, TIOCFLUSH, &zero); | |
530 | #endif | |
531 | #endif | |
532 | #endif | |
533 | } | |
64e971c3 | 534 | \f |
86a5659e JB |
535 | #ifndef VMS |
536 | /* Set up the terminal at the other end of a pseudo-terminal that | |
537 | we will be controlling an inferior through. | |
538 | It should not echo or do line-editing, since that is done | |
539 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
540 | ||
08633194 | 541 | void |
86a5659e JB |
542 | child_setup_tty (out) |
543 | int out; | |
544 | { | |
fe03522b | 545 | #ifndef DOS_NT |
91bac16a JB |
546 | struct emacs_tty s; |
547 | ||
548 | EMACS_GET_TTY (out, &s); | |
86a5659e | 549 | |
31be8d24 | 550 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
551 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
552 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 553 | #ifdef NLDLY |
91bac16a JB |
554 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
555 | /* No output delays */ | |
9d4e5eea | 556 | #endif |
91bac16a JB |
557 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
558 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
559 | #ifdef IUCLC |
560 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
561 | #endif | |
f7097b2a RS |
562 | #ifdef ISTRIP |
563 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
564 | #endif | |
23e4c8be | 565 | #ifdef OLCUC |
9d4e5eea RS |
566 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
567 | #endif | |
f7097b2a | 568 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 569 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 570 | #if 0 |
eb8c3be9 | 571 | /* Said to be unnecessary: */ |
91bac16a JB |
572 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
573 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
574 | #endif | |
575 | ||
576 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
577 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
578 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
579 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 580 | |
86a5659e | 581 | #ifdef HPUX |
91bac16a | 582 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 583 | #endif /* HPUX */ |
91bac16a | 584 | |
86a5659e JB |
585 | #ifdef AIX |
586 | /* AIX enhanced edit loses NULs, so disable it */ | |
587 | #ifndef IBMR2AIX | |
91bac16a JB |
588 | s.main.c_line = 0; |
589 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
590 | #endif |
591 | /* Also, PTY overloads NUL and BREAK. | |
592 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
593 | s.main.c_iflag &= ~IGNBRK; |
594 | s.main.c_iflag &= ~BRKINT; | |
595 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 596 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
597 | #ifdef SIGNALS_VIA_CHARACTERS |
598 | /* the QUIT and INTR character are used in process_send_signal | |
599 | so set them here to something useful. */ | |
600 | if (s.main.c_cc[VQUIT] == 0377) | |
601 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
602 | if (s.main.c_cc[VINTR] == 0377) | |
603 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
604 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
605 | /* QUIT and INTR work better as signals, so disable character forms */ | |
606 | s.main.c_cc[VQUIT] = 0377; | |
607 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 608 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
609 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
610 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 611 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
612 | #endif /* AIX */ |
613 | ||
614 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
615 | |
616 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
617 | | CBREAK | TANDEM); | |
a00d5589 | 618 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
619 | s.main.sg_erase = 0377; |
620 | s.main.sg_kill = 0377; | |
1bf96fb5 | 621 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 622 | |
86a5659e JB |
623 | #endif /* not HAVE_TERMIO */ |
624 | ||
91bac16a | 625 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
626 | |
627 | #ifdef BSD4_1 | |
628 | if (interrupt_input) | |
629 | reset_sigio (); | |
630 | #endif /* BSD4_1 */ | |
631 | #ifdef RTU | |
632 | { | |
633 | int zero = 0; | |
634 | ioctl (out, FIOASYNC, &zero); | |
635 | } | |
636 | #endif /* RTU */ | |
fe03522b | 637 | #endif /* not DOS_NT */ |
86a5659e JB |
638 | } |
639 | #endif /* not VMS */ | |
640 | ||
641 | #endif /* subprocesses */ | |
64e971c3 | 642 | \f |
86a5659e JB |
643 | /* Record a signal code and the handler for it. */ |
644 | struct save_signal | |
645 | { | |
646 | int code; | |
35a05cca | 647 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
648 | }; |
649 | ||
35a05cca AS |
650 | static void save_signal_handlers P_ ((struct save_signal *)); |
651 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
652 | ||
86a5659e JB |
653 | /* Suspend the Emacs process; give terminal to its superior. */ |
654 | ||
08633194 | 655 | void |
86a5659e JB |
656 | sys_suspend () |
657 | { | |
658 | #ifdef VMS | |
88191e36 RS |
659 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
660 | to the current emacs as a cheaper than starting a whole new process. This | |
661 | is set up by KEPTEDITOR.COM. */ | |
662 | unsigned long parent_id, foster_parent_id; | |
663 | char *fpid_string; | |
664 | ||
665 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
666 | if (fpid_string != NULL) | |
667 | { | |
668 | sscanf (fpid_string, "%x", &foster_parent_id); | |
669 | if (foster_parent_id != 0) | |
670 | parent_id = foster_parent_id; | |
671 | else | |
672 | parent_id = getppid (); | |
673 | } | |
674 | else | |
675 | parent_id = getppid (); | |
676 | ||
9ac0d9e0 | 677 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 678 | |
86a5659e JB |
679 | if (parent_id && parent_id != 0xffffffff) |
680 | { | |
681 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
682 | int status = LIB$ATTACH (&parent_id) & 1; | |
683 | signal (SIGINT, oldsig); | |
684 | return status; | |
685 | } | |
686 | else | |
687 | { | |
688 | struct { | |
689 | int l; | |
690 | char *a; | |
691 | } d_prompt; | |
692 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
693 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 694 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
695 | return 1; |
696 | } | |
697 | return -1; | |
698 | #else | |
207bdbdb | 699 | #if defined(SIGTSTP) && !defined(MSDOS) |
86a5659e | 700 | |
5a570e37 | 701 | { |
e89a2cd5 | 702 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
703 | EMACS_KILLPG (pgrp, SIGTSTP); |
704 | } | |
86a5659e JB |
705 | |
706 | #else /* No SIGTSTP */ | |
707 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
708 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
709 | kill (getpid (), SIGQUIT); | |
710 | ||
711 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
712 | ||
713 | /* On a system where suspending is not implemented, | |
714 | instead fork a subshell and let it talk directly to the terminal | |
715 | while we wait. */ | |
a0932daa KH |
716 | sys_subshell (); |
717 | ||
718 | #endif /* no USG_JOBCTRL */ | |
719 | #endif /* no SIGTSTP */ | |
720 | #endif /* not VMS */ | |
721 | } | |
722 | ||
723 | /* Fork a subshell. */ | |
724 | ||
08633194 | 725 | void |
a0932daa KH |
726 | sys_subshell () |
727 | { | |
728 | #ifndef VMS | |
ad00c243 | 729 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
730 | int st; |
731 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
732 | #endif | |
efa04277 | 733 | int pid; |
86a5659e | 734 | struct save_signal saved_handlers[5]; |
efa04277 RS |
735 | Lisp_Object dir; |
736 | unsigned char *str = 0; | |
737 | int len; | |
86a5659e JB |
738 | |
739 | saved_handlers[0].code = SIGINT; | |
740 | saved_handlers[1].code = SIGQUIT; | |
741 | saved_handlers[2].code = SIGTERM; | |
742 | #ifdef SIGIO | |
743 | saved_handlers[3].code = SIGIO; | |
744 | saved_handlers[4].code = 0; | |
745 | #else | |
746 | saved_handlers[3].code = 0; | |
747 | #endif | |
748 | ||
efa04277 RS |
749 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
750 | which somehow wedges the hp compiler. So instead... */ | |
751 | ||
752 | dir = intern ("default-directory"); | |
0e7e7a58 | 753 | if (NILP (Fboundp (dir))) |
efa04277 RS |
754 | goto xyzzy; |
755 | dir = Fsymbol_value (dir); | |
914e81a2 | 756 | if (!STRINGP (dir)) |
efa04277 RS |
757 | goto xyzzy; |
758 | ||
759 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
760 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
761 | len = XSTRING (dir)->size; | |
762 | bcopy (XSTRING (dir)->data, str, len); | |
763 | if (str[len - 1] != '/') str[len++] = '/'; | |
764 | str[len] = 0; | |
765 | xyzzy: | |
766 | ||
ad00c243 | 767 | #ifdef DOS_NT |
7964ba9e | 768 | pid = 0; |
718ca3cf RS |
769 | #if __DJGPP__ > 1 |
770 | save_signal_handlers (saved_handlers); | |
771 | synch_process_alive = 1; | |
772 | #endif /* __DJGPP__ > 1 */ | |
7964ba9e | 773 | #else |
efa04277 | 774 | pid = vfork (); |
86a5659e JB |
775 | if (pid == -1) |
776 | error ("Can't spawn subshell"); | |
7964ba9e RS |
777 | #endif |
778 | ||
86a5659e JB |
779 | if (pid == 0) |
780 | { | |
7964ba9e | 781 | char *sh = 0; |
86a5659e | 782 | |
ad00c243 | 783 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 784 | getwd (oldwd); |
7964ba9e RS |
785 | if (sh == 0) |
786 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 787 | #endif |
7964ba9e RS |
788 | if (sh == 0) |
789 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
790 | if (sh == 0) |
791 | sh = "sh"; | |
207bdbdb | 792 | |
86a5659e | 793 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 794 | if (str) |
86a5659e | 795 | chdir (str); |
efa04277 | 796 | |
86a5659e JB |
797 | #ifdef subprocesses |
798 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
799 | #endif | |
1593c2fe | 800 | |
6f8b4d01 | 801 | #ifdef SET_EMACS_PRIORITY |
1593c2fe JB |
802 | { |
803 | extern int emacs_priority; | |
804 | ||
6f8b4d01 | 805 | if (emacs_priority < 0) |
1593c2fe JB |
806 | nice (-emacs_priority); |
807 | } | |
808 | #endif | |
809 | ||
fe03522b | 810 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
207bdbdb RS |
811 | st = system (sh); |
812 | chdir (oldwd); | |
7964ba9e | 813 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 814 | if (st) |
fe03522b | 815 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 816 | #endif |
207bdbdb | 817 | #else /* not MSDOS */ |
fe03522b | 818 | #ifdef WINDOWSNT |
fe03522b RS |
819 | /* Waits for process completion */ |
820 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 821 | chdir (oldwd); |
fe03522b RS |
822 | if (pid == -1) |
823 | write (1, "Can't execute subshell", 22); | |
fe03522b | 824 | #else /* not WINDOWSNT */ |
86a5659e JB |
825 | execlp (sh, sh, 0); |
826 | write (1, "Can't execute subshell", 22); | |
827 | _exit (1); | |
fe03522b | 828 | #endif /* not WINDOWSNT */ |
207bdbdb | 829 | #endif /* not MSDOS */ |
86a5659e JB |
830 | } |
831 | ||
718ca3cf RS |
832 | /* Do this now if we did not do it before. */ |
833 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 834 | save_signal_handlers (saved_handlers); |
ffafc793 | 835 | synch_process_alive = 1; |
718ca3cf RS |
836 | #endif |
837 | ||
ad00c243 | 838 | #ifndef DOS_NT |
86a5659e | 839 | wait_for_termination (pid); |
7964ba9e | 840 | #endif |
86a5659e | 841 | restore_signal_handlers (saved_handlers); |
718ca3cf | 842 | synch_process_alive = 0; |
a0932daa | 843 | #endif /* !VMS */ |
86a5659e JB |
844 | } |
845 | ||
35a05cca | 846 | static void |
86a5659e JB |
847 | save_signal_handlers (saved_handlers) |
848 | struct save_signal *saved_handlers; | |
849 | { | |
850 | while (saved_handlers->code) | |
851 | { | |
508b171c | 852 | saved_handlers->handler |
35a05cca | 853 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
854 | saved_handlers++; |
855 | } | |
856 | } | |
857 | ||
35a05cca | 858 | static void |
86a5659e JB |
859 | restore_signal_handlers (saved_handlers) |
860 | struct save_signal *saved_handlers; | |
861 | { | |
862 | while (saved_handlers->code) | |
863 | { | |
864 | signal (saved_handlers->code, saved_handlers->handler); | |
865 | saved_handlers++; | |
866 | } | |
867 | } | |
868 | \f | |
869 | #ifdef F_SETFL | |
870 | ||
871 | int old_fcntl_flags; | |
872 | ||
08633194 | 873 | void |
23dab951 RS |
874 | init_sigio (fd) |
875 | int fd; | |
86a5659e JB |
876 | { |
877 | #ifdef FASYNC | |
23dab951 RS |
878 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
879 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 880 | #endif |
23dab951 | 881 | interrupts_deferred = 0; |
86a5659e JB |
882 | } |
883 | ||
590034f9 | 884 | void |
86a5659e JB |
885 | reset_sigio () |
886 | { | |
887 | unrequest_sigio (); | |
888 | } | |
889 | ||
eb8c3be9 | 890 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e | 891 | |
08633194 | 892 | void |
86a5659e JB |
893 | request_sigio () |
894 | { | |
23dab951 RS |
895 | if (read_socket_hook) |
896 | return; | |
897 | ||
86a5659e | 898 | #ifdef SIGWINCH |
e065a56e | 899 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 900 | #endif |
64e971c3 | 901 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
902 | |
903 | interrupts_deferred = 0; | |
904 | } | |
905 | ||
08633194 | 906 | void |
86a5659e JB |
907 | unrequest_sigio () |
908 | { | |
23dab951 RS |
909 | if (read_socket_hook) |
910 | return; | |
911 | ||
86a5659e | 912 | #ifdef SIGWINCH |
e065a56e | 913 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 914 | #endif |
64e971c3 | 915 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
916 | interrupts_deferred = 1; |
917 | } | |
918 | ||
919 | #else /* no FASYNC */ | |
920 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
921 | ||
08633194 | 922 | void |
86a5659e JB |
923 | request_sigio () |
924 | { | |
925 | int on = 1; | |
23dab951 RS |
926 | |
927 | if (read_socket_hook) | |
928 | return; | |
929 | ||
64e971c3 | 930 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
931 | interrupts_deferred = 0; |
932 | } | |
933 | ||
08633194 | 934 | void |
86a5659e JB |
935 | unrequest_sigio () |
936 | { | |
937 | int off = 0; | |
938 | ||
23dab951 RS |
939 | if (read_socket_hook) |
940 | return; | |
941 | ||
64e971c3 | 942 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
943 | interrupts_deferred = 1; |
944 | } | |
945 | ||
946 | #else /* not FASYNC, not STRIDE */ | |
947 | ||
25ab68af RS |
948 | #ifdef _CX_UX |
949 | ||
950 | #include <termios.h> | |
951 | ||
08633194 | 952 | void |
25ab68af RS |
953 | request_sigio () |
954 | { | |
955 | int on = 1; | |
956 | sigset_t st; | |
957 | ||
23dab951 RS |
958 | if (read_socket_hook) |
959 | return; | |
960 | ||
25ab68af RS |
961 | sigemptyset(&st); |
962 | sigaddset(&st, SIGIO); | |
963 | ioctl (input_fd, FIOASYNC, &on); | |
964 | interrupts_deferred = 0; | |
965 | sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0); | |
966 | } | |
967 | ||
08633194 | 968 | void |
25ab68af RS |
969 | unrequest_sigio () |
970 | { | |
971 | int off = 0; | |
972 | ||
23dab951 RS |
973 | if (read_socket_hook) |
974 | return; | |
975 | ||
25ab68af RS |
976 | ioctl (input_fd, FIOASYNC, &off); |
977 | interrupts_deferred = 1; | |
978 | } | |
979 | ||
980 | #else /* ! _CX_UX */ | |
981 | ||
08633194 | 982 | void |
86a5659e JB |
983 | request_sigio () |
984 | { | |
23dab951 RS |
985 | if (read_socket_hook) |
986 | return; | |
987 | ||
86a5659e JB |
988 | croak ("request_sigio"); |
989 | } | |
990 | ||
08633194 | 991 | void |
86a5659e JB |
992 | unrequest_sigio () |
993 | { | |
23dab951 RS |
994 | if (read_socket_hook) |
995 | return; | |
996 | ||
86a5659e JB |
997 | croak ("unrequest_sigio"); |
998 | } | |
999 | ||
25ab68af | 1000 | #endif /* _CX_UX */ |
86a5659e JB |
1001 | #endif /* STRIDE */ |
1002 | #endif /* FASYNC */ | |
1003 | #endif /* F_SETFL */ | |
1004 | \f | |
9ae8f997 JB |
1005 | /* Saving and restoring the process group of Emacs's terminal. */ |
1006 | ||
0ba73609 | 1007 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1008 | |
1009 | /* The process group of which Emacs was a member when it initially | |
1010 | started. | |
1011 | ||
1012 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1013 | getpid ()), then we know we're running under a shell with job | |
1014 | control (Emacs would never be run as part of a pipeline). | |
1015 | Everything is fine. | |
1016 | ||
1017 | If Emacs was not in its own process group, then we know we're | |
1018 | running under a shell (or a caller) that doesn't know how to | |
1019 | separate itself from Emacs (like sh). Emacs must be in its own | |
1020 | process group in order to receive SIGIO correctly. In this | |
1021 | situation, we put ourselves in our own pgroup, forcibly set the | |
1022 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1023 | the tty's pgroup just like any other terminal setting. If | |
1024 | inherited_group was not the tty's pgroup, then we'll get a | |
1025 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
1026 | it goes foreground in the future, which is what should happen. */ | |
1027 | int inherited_pgroup; | |
1028 | ||
1029 | /* Split off the foreground process group to Emacs alone. | |
1030 | When we are in the foreground, but not started in our own process | |
1031 | group, redirect the TTY to point to our own process group. We need | |
1032 | to be in our own process group to receive SIGIO properly. */ | |
dfcf069d | 1033 | void |
9ae8f997 JB |
1034 | narrow_foreground_group () |
1035 | { | |
1036 | int me = getpid (); | |
1037 | ||
1038 | setpgrp (0, inherited_pgroup); | |
1039 | if (inherited_pgroup != me) | |
64e971c3 | 1040 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
1041 | setpgrp (0, me); |
1042 | } | |
1043 | ||
1044 | /* Set the tty to our original foreground group. */ | |
dfcf069d | 1045 | void |
9ae8f997 JB |
1046 | widen_foreground_group () |
1047 | { | |
1048 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 1049 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
1050 | setpgrp (0, inherited_pgroup); |
1051 | } | |
1052 | ||
0ba73609 | 1053 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1054 | \f |
68936329 JB |
1055 | /* Getting and setting emacs_tty structures. */ |
1056 | ||
1057 | /* Set *TC to the parameters associated with the terminal FD. | |
1058 | Return zero if all's well, or -1 if we ran into an error we | |
1059 | couldn't deal with. */ | |
1060 | int | |
1061 | emacs_get_tty (fd, settings) | |
1062 | int fd; | |
1063 | struct emacs_tty *settings; | |
1064 | { | |
1065 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1066 | #ifdef HAVE_TCATTR | |
1067 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1068 | if (tcgetattr (fd, &settings->main) < 0) | |
1069 | return -1; | |
1070 | ||
1071 | #else | |
1072 | #ifdef HAVE_TERMIO | |
1073 | /* The SYSV-style interface? */ | |
1074 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1075 | return -1; | |
1076 | ||
1077 | #else | |
1078 | #ifdef VMS | |
1079 | /* Vehemently Monstrous System? :-) */ | |
1080 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1081 | &settings->main.class, 12, 0, 0, 0, 0) | |
1082 | & 1)) | |
1083 | return -1; | |
1084 | ||
1085 | #else | |
fe03522b | 1086 | #ifndef DOS_NT |
68936329 JB |
1087 | /* I give up - I hope you have the BSD ioctls. */ |
1088 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1089 | return -1; | |
fe03522b | 1090 | #endif /* not DOS_NT */ |
68936329 JB |
1091 | #endif |
1092 | #endif | |
1093 | #endif | |
1094 | ||
1095 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1096 | #ifdef HAVE_LTCHARS |
68936329 JB |
1097 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1098 | return -1; | |
1099 | #endif | |
1100 | ||
1101 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1102 | #ifdef HAVE_TCHARS |
68936329 JB |
1103 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1104 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1105 | return -1; | |
1106 | #endif | |
1107 | ||
1108 | /* We have survived the tempest. */ | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | ||
1113 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1114 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1115 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1116 | |
68936329 | 1117 | int |
394049ec | 1118 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1119 | int fd; |
1120 | struct emacs_tty *settings; | |
394049ec | 1121 | int flushp; |
68936329 JB |
1122 | { |
1123 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1124 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1125 | int i; |
68936329 JB |
1126 | /* We have those nifty POSIX tcmumbleattr functions. |
1127 | William J. Smith <wjs@wiis.wang.com> writes: | |
1128 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
1129 | able to perform any of the requested actions, even if some | |
1130 | of the requested actions could not be performed. | |
1131 | We must read settings back to ensure tty setup properly. | |
1132 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1133 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1134 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1135 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1136 | { |
1137 | if (errno == EINTR) | |
1138 | continue; | |
1139 | else | |
1140 | return -1; | |
1141 | } | |
1142 | else | |
1143 | { | |
1144 | struct termios new; | |
1145 | ||
1146 | /* Get the current settings, and see if they're what we asked for. */ | |
1147 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1148 | /* We cannot use memcmp on the whole structure here because under |
1149 | * aix386 the termios structure has some reserved field that may | |
1150 | * not be filled in. | |
1151 | */ | |
1152 | if ( new.c_iflag == settings->main.c_iflag | |
1153 | && new.c_oflag == settings->main.c_oflag | |
1154 | && new.c_cflag == settings->main.c_cflag | |
1155 | && new.c_lflag == settings->main.c_lflag | |
1156 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 1157 | break; |
e6cc3307 RS |
1158 | else |
1159 | continue; | |
68936329 JB |
1160 | } |
1161 | ||
1162 | #else | |
1163 | #ifdef HAVE_TERMIO | |
1164 | /* The SYSV-style interface? */ | |
394049ec | 1165 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1166 | return -1; |
1167 | ||
1168 | #else | |
1169 | #ifdef VMS | |
1170 | /* Vehemently Monstrous System? :-) */ | |
1171 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1172 | &settings->main.class, 12, 0, 0, 0, 0) | |
1173 | & 1)) | |
1174 | return -1; | |
1175 | ||
1176 | #else | |
fe03522b | 1177 | #ifndef DOS_NT |
68936329 | 1178 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1179 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1180 | return -1; |
fe03522b | 1181 | #endif /* not DOS_NT */ |
68936329 JB |
1182 | |
1183 | #endif | |
1184 | #endif | |
1185 | #endif | |
1186 | ||
1187 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1188 | #ifdef HAVE_LTCHARS |
68936329 JB |
1189 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1190 | return -1; | |
1191 | #endif | |
1192 | ||
1193 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1194 | #ifdef HAVE_TCHARS |
68936329 JB |
1195 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1196 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1197 | return -1; | |
1198 | #endif | |
1199 | ||
1200 | /* We have survived the tempest. */ | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | \f | |
91bac16a JB |
1205 | /* The initial tty mode bits */ |
1206 | struct emacs_tty old_tty; | |
86a5659e | 1207 | |
7e32a4fb KH |
1208 | /* 1 if we have been through init_sys_modes. */ |
1209 | int term_initted; | |
1210 | ||
1211 | /* 1 if outer tty status has been recorded. */ | |
1212 | int old_tty_valid; | |
86a5659e | 1213 | |
91bac16a JB |
1214 | #ifdef BSD4_1 |
1215 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1216 | sigio. */ | |
1217 | int lmode; | |
1218 | #endif | |
1219 | ||
46f2fdac | 1220 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1221 | #ifdef F_SETOWN |
1222 | int old_fcntl_owner; | |
1223 | #endif /* F_SETOWN */ | |
46f2fdac | 1224 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1225 | |
86a5659e JB |
1226 | /* This may also be defined in stdio, |
1227 | but if so, this does no harm, | |
1228 | and using the same name avoids wasting the other one's space. */ | |
1229 | ||
1230 | #if defined (USG) || defined (DGUX) | |
1231 | unsigned char _sobuf[BUFSIZ+8]; | |
1232 | #else | |
1233 | char _sobuf[BUFSIZ]; | |
1234 | #endif | |
1235 | ||
50b8cf60 | 1236 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1237 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1238 | #endif | |
50b8cf60 | 1239 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1240 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
86a5659e JB |
1241 | #endif |
1242 | ||
08633194 | 1243 | void |
86a5659e JB |
1244 | init_sys_modes () |
1245 | { | |
91bac16a JB |
1246 | struct emacs_tty tty; |
1247 | ||
86a5659e JB |
1248 | #ifdef VMS |
1249 | #if 0 | |
1250 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1251 | extern int (*interrupt_signal) (); | |
1252 | #endif | |
1253 | #endif | |
1254 | ||
4ec5cb58 RS |
1255 | Vtty_erase_char = Qnil; |
1256 | ||
86a5659e JB |
1257 | if (noninteractive) |
1258 | return; | |
1259 | ||
1260 | #ifdef VMS | |
1261 | if (!input_ef) | |
1262 | input_ef = get_kbd_event_flag (); | |
1263 | /* LIB$GET_EF (&input_ef); */ | |
1264 | SYS$CLREF (input_ef); | |
1265 | waiting_for_ast = 0; | |
1266 | if (!timer_ef) | |
1267 | timer_ef = get_timer_event_flag (); | |
1268 | /* LIB$GET_EF (&timer_ef); */ | |
1269 | SYS$CLREF (timer_ef); | |
210b2b4f | 1270 | #if 0 |
86a5659e JB |
1271 | if (!process_ef) |
1272 | { | |
1273 | LIB$GET_EF (&process_ef); | |
1274 | SYS$CLREF (process_ef); | |
1275 | } | |
1276 | if (input_ef / 32 != process_ef / 32) | |
1277 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1278 | #endif |
86a5659e | 1279 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1280 | croak ("Input and timer event flags in different clusters."); |
1281 | #if 0 | |
86a5659e JB |
1282 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1283 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1284 | #endif |
86a5659e JB |
1285 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1286 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1287 | #ifndef VMS4_4 |
1288 | sys_access_reinit (); | |
1289 | #endif | |
86a5659e | 1290 | #endif /* not VMS */ |
91bac16a | 1291 | |
0ba73609 | 1292 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1293 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1294 | narrow_foreground_group (); | |
1295 | #endif | |
1296 | ||
23cafe43 | 1297 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1298 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1299 | needs the initialization code below. */ | |
86a5659e | 1300 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1301 | #endif |
86a5659e | 1302 | { |
23dab951 RS |
1303 | EMACS_GET_TTY (input_fd, &old_tty); |
1304 | ||
7e32a4fb KH |
1305 | old_tty_valid = 1; |
1306 | ||
91bac16a | 1307 | tty = old_tty; |
86a5659e | 1308 | |
31be8d24 | 1309 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2e34157c | 1310 | XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); |
4ec5cb58 | 1311 | |
421dd92f RS |
1312 | #ifdef DGUX |
1313 | /* This allows meta to be sent on 8th bit. */ | |
1314 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1315 | #endif | |
91bac16a JB |
1316 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1317 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1318 | #ifdef INLCR /* I'm just being cautious, |
1319 | since I can't check how widespread INLCR is--rms. */ | |
1320 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
1321 | #endif | |
86a5659e | 1322 | #ifdef ISTRIP |
91bac16a | 1323 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1324 | #endif |
91bac16a JB |
1325 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1326 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1327 | #ifdef IEXTEN |
b26bc18b | 1328 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1329 | #endif |
91bac16a | 1330 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1331 | if (flow_control) |
1332 | { | |
91bac16a | 1333 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1334 | #ifdef IXANY |
91bac16a | 1335 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1336 | #endif /* IXANY */ |
1337 | } | |
1338 | else | |
91bac16a JB |
1339 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1340 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1341 | on output */ | |
1342 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1343 | #ifdef CS8 |
1344 | if (meta_key) | |
1345 | { | |
91bac16a JB |
1346 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1347 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1348 | } |
1349 | #endif | |
91bac16a | 1350 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1351 | /* Set up C-g for both SIGQUIT and SIGINT. |
1352 | We don't know which we will get, but we handle both alike | |
1353 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1354 | tty.main.c_cc[VQUIT] = quit_char; |
1355 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1356 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1357 | #ifdef VSWTCH |
e2b40c23 | 1358 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1359 | of C-z */ |
86a5659e | 1360 | #endif /* VSWTCH */ |
c179a6d1 | 1361 | |
86a5659e | 1362 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1363 | #ifdef VSUSP |
e2b40c23 | 1364 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1365 | #endif /* VSUSP */ |
1366 | #ifdef V_DSUSP | |
e2b40c23 | 1367 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1368 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1369 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1370 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1371 | #endif /* VDSUSP */ | |
92c995de RS |
1372 | #ifdef VLNEXT |
1373 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1374 | #endif /* VLNEXT */ | |
1375 | #ifdef VREPRINT | |
1376 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1377 | #endif /* VREPRINT */ | |
1378 | #ifdef VWERASE | |
1379 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1380 | #endif /* VWERASE */ | |
1381 | #ifdef VDISCARD | |
1382 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1383 | #endif /* VDISCARD */ | |
c179a6d1 RS |
1384 | |
1385 | if (flow_control) | |
1386 | { | |
421dd92f | 1387 | #ifdef VSTART |
c179a6d1 | 1388 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1389 | #endif /* VSTART */ |
1390 | #ifdef VSTOP | |
c179a6d1 | 1391 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1392 | #endif /* VSTOP */ |
c179a6d1 RS |
1393 | } |
1394 | else | |
1395 | { | |
1396 | #ifdef VSTART | |
1397 | tty.main.c_cc[VSTART] = CDISABLE; | |
1398 | #endif /* VSTART */ | |
1399 | #ifdef VSTOP | |
1400 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1401 | #endif /* VSTOP */ | |
1402 | } | |
86a5659e | 1403 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1404 | |
441f6399 | 1405 | #ifdef SET_LINE_DISCIPLINE |
ea5a0917 | 1406 | /* Need to explicitly request TERMIODISC line discipline or |
441f6399 RS |
1407 | Ultrix's termios does not work correctly. */ |
1408 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1409 | #endif | |
86a5659e JB |
1410 | #ifdef AIX |
1411 | #ifndef IBMR2AIX | |
441f6399 | 1412 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1413 | tty.main.c_line = 0; |
1414 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1415 | #else |
91bac16a JB |
1416 | tty.main.c_cc[VSTRT] = 255; |
1417 | tty.main.c_cc[VSTOP] = 255; | |
1418 | tty.main.c_cc[VSUSP] = 255; | |
1419 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e | 1420 | #endif /* IBMR2AIX */ |
ac567c95 RS |
1421 | if (flow_control) |
1422 | { | |
1423 | #ifdef VSTART | |
1424 | tty.main.c_cc[VSTART] = '\021'; | |
1425 | #endif /* VSTART */ | |
1426 | #ifdef VSTOP | |
1427 | tty.main.c_cc[VSTOP] = '\023'; | |
1428 | #endif /* VSTOP */ | |
1429 | } | |
86a5659e JB |
1430 | /* Also, PTY overloads NUL and BREAK. |
1431 | don't ignore break, but don't signal either, so it looks like NUL. | |
1432 | This really serves a purpose only if running in an XTERM window | |
1433 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1434 | tty.main.c_iflag &= ~IGNBRK; |
1435 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1436 | #endif |
1437 | #else /* if not HAVE_TERMIO */ | |
1438 | #ifdef VMS | |
91bac16a | 1439 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1440 | if (meta_key) |
986ffb24 | 1441 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1442 | if (flow_control) |
91bac16a | 1443 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1444 | else |
91bac16a JB |
1445 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1446 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1447 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1448 | #ifndef DOS_NT |
4ec5cb58 | 1449 | Vtty_erase_char = tty.main.sg_erase; |
91bac16a | 1450 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1451 | if (meta_key) |
91bac16a JB |
1452 | tty.main.sg_flags |= ANYP; |
1453 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1454 | #endif /* not DOS_NT */ |
86a5659e JB |
1455 | #endif /* not VMS (BSD, that is) */ |
1456 | #endif /* not HAVE_TERMIO */ | |
1457 | ||
91bac16a JB |
1458 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1459 | and turn off start and stop chars, etc. If not going to use | |
1460 | CBREAK mode, do this anyway so as to turn off local flow | |
1461 | control for user coming over network on 4.2; in this case, | |
1462 | only t_stopc and t_startc really matter. */ | |
1463 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1464 | #ifdef HAVE_TCHARS |
91bac16a JB |
1465 | /* Note: if not using CBREAK mode, it makes no difference how we |
1466 | set this */ | |
1467 | tty.tchars = new_tchars; | |
1468 | tty.tchars.t_intrc = quit_char; | |
1469 | if (flow_control) | |
1470 | { | |
1471 | tty.tchars.t_startc = '\021'; | |
1472 | tty.tchars.t_stopc = '\023'; | |
1473 | } | |
1474 | ||
91bac16a | 1475 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1476 | #ifdef ultrix |
1477 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1478 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1479 | tty.lmode &= ~LLITOUT; | |
1480 | #endif | |
91bac16a JB |
1481 | |
1482 | #ifdef BSD4_1 | |
1483 | lmode = tty.lmode; | |
1484 | #endif | |
1485 | ||
50b8cf60 | 1486 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1487 | #endif /* not HAVE_TERMIO */ |
1488 | ||
50b8cf60 | 1489 | #ifdef HAVE_LTCHARS |
91bac16a | 1490 | tty.ltchars = new_ltchars; |
50b8cf60 | 1491 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1492 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1493 | if (!term_initted) |
1494 | internal_terminal_init (); | |
207bdbdb RS |
1495 | dos_ttraw (); |
1496 | #endif | |
91bac16a JB |
1497 | |
1498 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1499 | |
1500 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1501 | we have an unlocked terminal at the start. */ |
91bac16a | 1502 | |
86a5659e | 1503 | #ifdef TCXONC |
64e971c3 | 1504 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1505 | #endif |
1506 | #ifndef APOLLO | |
1507 | #ifdef TIOCSTART | |
64e971c3 | 1508 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1509 | #endif |
1510 | #endif | |
1511 | ||
d228f207 | 1512 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1513 | #ifdef TCOON |
d228f207 RS |
1514 | if (!flow_control) tcflow (input_fd, TCOON); |
1515 | #endif | |
51417996 | 1516 | #endif |
d228f207 | 1517 | |
b97ab886 | 1518 | #ifdef AIXHFT |
86a5659e JB |
1519 | hft_init (); |
1520 | #ifdef IBMR2AIX | |
1521 | { | |
1522 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1523 | to be only LF. This is the way that is done. */ | |
1524 | struct termio tty; | |
1525 | ||
1526 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1527 | write (1, "\033[20l", 5); | |
1528 | } | |
1529 | #endif | |
b97ab886 | 1530 | #endif /* AIXHFT */ |
86a5659e | 1531 | |
86a5659e JB |
1532 | #ifdef VMS |
1533 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1534 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1535 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1536 | */ | |
1537 | queue_kbd_input (0); | |
1538 | #endif /* VMS */ | |
1539 | } | |
1540 | ||
1541 | #ifdef F_SETFL | |
46f2fdac | 1542 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1543 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1544 | if (interrupt_input |
1545 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1546 | { |
64e971c3 RS |
1547 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1548 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1549 | init_sigio (input_fd); |
86a5659e JB |
1550 | } |
1551 | #endif /* F_GETOWN */ | |
46f2fdac | 1552 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1553 | #endif /* F_SETFL */ |
1554 | ||
1555 | #ifdef BSD4_1 | |
1556 | if (interrupt_input) | |
23dab951 | 1557 | init_sigio (input_fd); |
86a5659e JB |
1558 | #endif |
1559 | ||
1560 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1561 | #undef _IOFBF | |
1562 | #endif | |
1563 | #ifdef _IOFBF | |
1564 | /* This symbol is defined on recent USG systems. | |
1565 | Someone says without this call USG won't really buffer the file | |
1566 | even with a call to setbuf. */ | |
1567 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1568 | #else | |
1569 | setbuf (stdout, _sobuf); | |
1570 | #endif | |
23cafe43 | 1571 | #ifdef HAVE_WINDOW_SYSTEM |
c4295188 KS |
1572 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1573 | needs the initialization code below. */ | |
ad00c243 GV |
1574 | if (EQ (Vwindow_system, Qnil) |
1575 | #ifndef WINDOWSNT | |
1576 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1577 | hook, but still need the rest of the initialization code below. */ | |
1578 | && (! read_socket_hook) | |
1579 | #endif | |
1580 | ) | |
c4295188 | 1581 | #endif |
4b311aaf RS |
1582 | set_terminal_modes (); |
1583 | ||
86a5659e JB |
1584 | if (term_initted && no_redraw_on_reenter) |
1585 | { | |
1586 | if (display_completed) | |
1587 | direct_output_forward_char (0); | |
1588 | } | |
1589 | else | |
1590 | { | |
0137dbf7 | 1591 | frame_garbaged = 1; |
0137dbf7 JB |
1592 | if (FRAMEP (Vterminal_frame)) |
1593 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e | 1594 | } |
91bac16a | 1595 | |
86a5659e JB |
1596 | term_initted = 1; |
1597 | } | |
1598 | ||
1599 | /* Return nonzero if safe to use tabs in output. | |
1600 | At the time this is called, init_sys_modes has not been done yet. */ | |
1601 | ||
dfcf069d | 1602 | int |
86a5659e JB |
1603 | tabs_safe_p () |
1604 | { | |
91bac16a JB |
1605 | struct emacs_tty tty; |
1606 | ||
1607 | EMACS_GET_TTY (input_fd, &tty); | |
1608 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1609 | } |
73d5358f | 1610 | \f |
86a5659e | 1611 | /* Get terminal size from system. |
73d5358f RS |
1612 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1613 | We store 0 if there's no valid information. */ | |
86a5659e | 1614 | |
08633194 | 1615 | void |
0137dbf7 | 1616 | get_frame_size (widthp, heightp) |
86a5659e JB |
1617 | int *widthp, *heightp; |
1618 | { | |
86a5659e | 1619 | |
86a5659e | 1620 | #ifdef TIOCGWINSZ |
91bac16a JB |
1621 | |
1622 | /* BSD-style. */ | |
86a5659e | 1623 | struct winsize size; |
91bac16a JB |
1624 | |
1625 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1626 | *widthp = *heightp = 0; | |
1627 | else | |
1628 | { | |
1629 | *widthp = size.ws_col; | |
1630 | *heightp = size.ws_row; | |
1631 | } | |
1632 | ||
1633 | #else | |
1634 | #ifdef TIOCGSIZE | |
1635 | ||
1636 | /* SunOS - style. */ | |
1637 | struct ttysize size; | |
1638 | ||
1639 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1640 | *widthp = *heightp = 0; | |
1641 | else | |
1642 | { | |
1643 | *widthp = size.ts_cols; | |
1644 | *heightp = size.ts_lines; | |
1645 | } | |
1646 | ||
1647 | #else | |
86a5659e | 1648 | #ifdef VMS |
91bac16a JB |
1649 | |
1650 | struct sensemode tty; | |
1651 | ||
1652 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1653 | &tty.class, 12, 0, 0, 0, 0); |
1654 | *widthp = tty.scr_wid; | |
1655 | *heightp = tty.scr_len; | |
91bac16a | 1656 | |
207bdbdb RS |
1657 | #else |
1658 | #ifdef MSDOS | |
1659 | *widthp = ScreenCols (); | |
1660 | *heightp = ScreenRows (); | |
86a5659e JB |
1661 | #else /* system doesn't know size */ |
1662 | *widthp = 0; | |
1663 | *heightp = 0; | |
207bdbdb | 1664 | #endif |
91bac16a JB |
1665 | |
1666 | #endif /* not VMS */ | |
1667 | #endif /* not SunOS-style */ | |
1668 | #endif /* not BSD-style */ | |
86a5659e | 1669 | } |
91bac16a | 1670 | |
73d5358f RS |
1671 | /* Set the logical window size associated with descriptor FD |
1672 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1673 | ||
1674 | int | |
1675 | set_window_size (fd, height, width) | |
1676 | int fd, height, width; | |
1677 | { | |
1678 | #ifdef TIOCSWINSZ | |
1679 | ||
1680 | /* BSD-style. */ | |
1681 | struct winsize size; | |
1682 | size.ws_row = height; | |
1683 | size.ws_col = width; | |
1684 | ||
1685 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1686 | return 0; /* error */ | |
1687 | else | |
1688 | return 1; | |
1689 | ||
1690 | #else | |
1691 | #ifdef TIOCSSIZE | |
1692 | ||
1693 | /* SunOS - style. */ | |
1694 | struct ttysize size; | |
1695 | size.ts_lines = height; | |
1696 | size.ts_cols = width; | |
1697 | ||
1698 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1699 | return 0; | |
1700 | else | |
1701 | return 1; | |
1702 | #else | |
1703 | return -1; | |
1704 | #endif /* not SunOS-style */ | |
1705 | #endif /* not BSD-style */ | |
1706 | } | |
1707 | ||
86a5659e | 1708 | \f |
91bac16a | 1709 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1710 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
08633194 | 1711 | void |
86a5659e JB |
1712 | reset_sys_modes () |
1713 | { | |
1714 | if (noninteractive) | |
1715 | { | |
1716 | fflush (stdout); | |
1717 | return; | |
1718 | } | |
1719 | if (!term_initted) | |
1720 | return; | |
23cafe43 | 1721 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1722 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1723 | needs the clean-up code below. */ | |
ad00c243 GV |
1724 | if (!EQ (Vwindow_system, Qnil) |
1725 | #ifndef WINDOWSNT | |
1726 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1727 | hook, but still need the rest of the clean-up code below. */ | |
1728 | || read_socket_hook | |
1729 | #endif | |
1730 | ) | |
86a5659e | 1731 | return; |
87485d6f | 1732 | #endif |
0137dbf7 JB |
1733 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1734 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1735 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1736 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
b97ab886 | 1737 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e JB |
1738 | { |
1739 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1740 | do the LF only. Now, we need to reset it. */ | |
1741 | struct termio tty; | |
1742 | ||
1743 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1744 | write (1, "\033[20h", 5); | |
1745 | } | |
1746 | #endif | |
1747 | ||
1748 | reset_terminal_modes (); | |
1749 | fflush (stdout); | |
2a633456 | 1750 | #ifdef BSD_SYSTEM |
86a5659e JB |
1751 | #ifndef BSD4_1 |
1752 | /* Avoid possible loss of output when changing terminal modes. */ | |
1753 | fsync (fileno (stdout)); | |
1754 | #endif | |
1755 | #endif | |
91bac16a | 1756 | |
86a5659e | 1757 | #ifdef F_SETFL |
46f2fdac | 1758 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1759 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1760 | if (interrupt_input) |
1761 | { | |
1762 | reset_sigio (); | |
64e971c3 | 1763 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1764 | } |
1765 | #endif /* F_SETOWN */ | |
46f2fdac | 1766 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1767 | #ifdef O_NDELAY |
1768 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1769 | #endif | |
86a5659e JB |
1770 | #endif /* F_SETFL */ |
1771 | #ifdef BSD4_1 | |
1772 | if (interrupt_input) | |
1773 | reset_sigio (); | |
1774 | #endif /* BSD4_1 */ | |
91bac16a | 1775 | |
7e32a4fb KH |
1776 | if (old_tty_valid) |
1777 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) | |
1778 | ; | |
86a5659e | 1779 | |
207bdbdb RS |
1780 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1781 | dos_ttcooked (); | |
1782 | #endif | |
1783 | ||
441f6399 RS |
1784 | #ifdef SET_LINE_DISCIPLINE |
1785 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1786 | A different old line discipline is therefore not restored, yet. | |
1787 | Restore the old line discipline by hand. */ | |
1788 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1789 | #endif | |
1790 | ||
b97ab886 | 1791 | #ifdef AIXHFT |
86a5659e JB |
1792 | hft_reset (); |
1793 | #endif | |
9ae8f997 | 1794 | |
0ba73609 | 1795 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1796 | widen_foreground_group (); |
1797 | #endif | |
86a5659e JB |
1798 | } |
1799 | \f | |
1800 | #ifdef HAVE_PTYS | |
1801 | ||
1802 | /* Set up the proper status flags for use of a pty. */ | |
1803 | ||
08633194 | 1804 | void |
86a5659e JB |
1805 | setup_pty (fd) |
1806 | int fd; | |
1807 | { | |
1808 | /* I'm told that TOICREMOTE does not mean control chars | |
1809 | "can't be sent" but rather that they don't have | |
1810 | input-editing or signaling effects. | |
1811 | That should be good, because we have other ways | |
1812 | to do those things in Emacs. | |
1813 | However, telnet mode seems not to work on 4.2. | |
1814 | So TIOCREMOTE is turned off now. */ | |
1815 | ||
1816 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1817 | will hang. In particular, the "timeout" feature (which | |
1818 | causes a read to return if there is no data available) | |
1819 | does this. Also it is known that telnet mode will hang | |
1820 | in such a way that Emacs must be stopped (perhaps this | |
1821 | is the same problem). | |
1822 | ||
1823 | If TIOCREMOTE is turned off, then there is a bug in | |
1824 | hp-ux which sometimes loses data. Apparently the | |
1825 | code which blocks the master process when the internal | |
1826 | buffer fills up does not work. Other than this, | |
1827 | though, everything else seems to work fine. | |
1828 | ||
1829 | Since the latter lossage is more benign, we may as well | |
1830 | lose that way. -- cph */ | |
1831 | #ifdef FIONBIO | |
1832 | #ifdef SYSV_PTYS | |
1833 | { | |
1834 | int on = 1; | |
1835 | ioctl (fd, FIONBIO, &on); | |
1836 | } | |
1837 | #endif | |
1838 | #endif | |
1839 | #ifdef IBMRTAIX | |
1840 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1841 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1842 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1843 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1844 | /* change this behavior, but I'm not going to hold my breath. */ | |
1845 | signal (SIGHUP, SIG_IGN); | |
1846 | #endif | |
1847 | } | |
1848 | #endif /* HAVE_PTYS */ | |
1849 | \f | |
1850 | #ifdef VMS | |
1851 | ||
1852 | /* Assigning an input channel is done at the start of Emacs execution. | |
1853 | This is called each time Emacs is resumed, also, but does nothing | |
1854 | because input_chain is no longer zero. */ | |
1855 | ||
dfcf069d | 1856 | void |
86a5659e JB |
1857 | init_vms_input () |
1858 | { | |
1859 | int status; | |
1860 | ||
91bac16a | 1861 | if (input_fd == 0) |
86a5659e | 1862 | { |
91bac16a | 1863 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1864 | if (! (status & 1)) |
1865 | LIB$STOP (status); | |
1866 | } | |
1867 | } | |
1868 | ||
1869 | /* Deassigning the input channel is done before exiting. */ | |
1870 | ||
dfcf069d | 1871 | void |
86a5659e JB |
1872 | stop_vms_input () |
1873 | { | |
91bac16a | 1874 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1875 | } |
1876 | ||
1877 | short input_buffer; | |
1878 | ||
1879 | /* Request reading one character into the keyboard buffer. | |
1880 | This is done as soon as the buffer becomes empty. */ | |
1881 | ||
dfcf069d | 1882 | void |
86a5659e JB |
1883 | queue_kbd_input () |
1884 | { | |
1885 | int status; | |
210b2b4f JB |
1886 | extern kbd_input_ast (); |
1887 | ||
86a5659e JB |
1888 | waiting_for_ast = 0; |
1889 | stop_input = 0; | |
91bac16a | 1890 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1891 | &input_iosb, kbd_input_ast, 1, |
1892 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1893 | } | |
1894 | ||
1895 | int input_count; | |
1896 | ||
1897 | /* Ast routine that is called when keyboard input comes in | |
1898 | in accord with the SYS$QIO above. */ | |
1899 | ||
dfcf069d | 1900 | void |
86a5659e JB |
1901 | kbd_input_ast () |
1902 | { | |
1903 | register int c = -1; | |
1904 | int old_errno = errno; | |
ffd56f97 | 1905 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1906 | |
1907 | if (waiting_for_ast) | |
1908 | SYS$SETEF (input_ef); | |
1909 | waiting_for_ast = 0; | |
1910 | input_count++; | |
1911 | #ifdef ASTDEBUG | |
1912 | if (input_count == 25) | |
1913 | exit (1); | |
1914 | printf ("Ast # %d,", input_count); | |
1915 | printf (" iosb = %x, %x, %x, %x", | |
1916 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1917 | input_iosb.term); | |
1918 | #endif | |
1919 | if (input_iosb.offset) | |
1920 | { | |
1921 | c = input_buffer; | |
1922 | #ifdef ASTDEBUG | |
1923 | printf (", char = 0%o", c); | |
1924 | #endif | |
1925 | } | |
1926 | #ifdef ASTDEBUG | |
1927 | printf ("\n"); | |
1928 | fflush (stdout); | |
1929 | sleep (1); | |
1930 | #endif | |
1931 | if (! stop_input) | |
1932 | queue_kbd_input (); | |
1933 | if (c >= 0) | |
1934 | { | |
1935 | struct input_event e; | |
1936 | e.kind = ascii_keystroke; | |
c81d47b4 | 1937 | XSETINT (e.code, c); |
c81d47b4 | 1938 | XSETFRAME (e.frame_or_window, selected_frame); |
86a5659e JB |
1939 | kbd_buffer_store_event (&e); |
1940 | } | |
ffd56f97 JB |
1941 | if (input_available_clear_time) |
1942 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1943 | errno = old_errno; |
1944 | } | |
1945 | ||
1946 | /* Wait until there is something in kbd_buffer. */ | |
1947 | ||
dfcf069d | 1948 | void |
86a5659e JB |
1949 | wait_for_kbd_input () |
1950 | { | |
1951 | extern int have_process_input, process_exited; | |
1952 | ||
1953 | /* If already something, avoid doing system calls. */ | |
1954 | if (detect_input_pending ()) | |
1955 | { | |
1956 | return; | |
1957 | } | |
1958 | /* Clear a flag, and tell ast routine above to set it. */ | |
1959 | SYS$CLREF (input_ef); | |
1960 | waiting_for_ast = 1; | |
1961 | /* Check for timing error: ast happened while we were doing that. */ | |
1962 | if (!detect_input_pending ()) | |
1963 | { | |
1964 | /* No timing error: wait for flag to be set. */ | |
1965 | set_waiting_for_input (0); | |
1966 | SYS$WFLOR (input_ef, input_eflist); | |
1967 | clear_waiting_for_input (0); | |
1968 | if (!detect_input_pending ()) | |
1969 | /* Check for subprocess input availability */ | |
1970 | { | |
1971 | int dsp = have_process_input || process_exited; | |
1972 | ||
1973 | SYS$CLREF (process_ef); | |
1974 | if (have_process_input) | |
1975 | process_command_input (); | |
1976 | if (process_exited) | |
1977 | process_exit (); | |
1978 | if (dsp) | |
1979 | { | |
1980 | update_mode_lines++; | |
56b18525 | 1981 | prepare_menu_bars (); |
86a5659e JB |
1982 | redisplay_preserve_echo_area (); |
1983 | } | |
1984 | } | |
1985 | } | |
1986 | waiting_for_ast = 0; | |
1987 | } | |
1988 | ||
1989 | /* Get rid of any pending QIO, when we are about to suspend | |
1990 | or when we want to throw away pending input. | |
1991 | We wait for a positive sign that the AST routine has run | |
1992 | and therefore there is no I/O request queued when we return. | |
1993 | SYS$SETAST is used to avoid a timing error. */ | |
1994 | ||
dfcf069d | 1995 | void |
86a5659e JB |
1996 | end_kbd_input () |
1997 | { | |
1998 | #ifdef ASTDEBUG | |
1999 | printf ("At end_kbd_input.\n"); | |
2000 | fflush (stdout); | |
2001 | sleep (1); | |
2002 | #endif | |
2003 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
2004 | { | |
91bac16a | 2005 | SYS$CANCEL (input_fd); |
86a5659e JB |
2006 | return; |
2007 | } | |
2008 | ||
2009 | SYS$SETAST (0); | |
2010 | /* Clear a flag, and tell ast routine above to set it. */ | |
2011 | SYS$CLREF (input_ef); | |
2012 | waiting_for_ast = 1; | |
2013 | stop_input = 1; | |
91bac16a | 2014 | SYS$CANCEL (input_fd); |
86a5659e JB |
2015 | SYS$SETAST (1); |
2016 | SYS$WAITFR (input_ef); | |
2017 | waiting_for_ast = 0; | |
2018 | } | |
2019 | ||
2020 | /* Wait for either input available or time interval expiry. */ | |
2021 | ||
dfcf069d | 2022 | void |
86a5659e JB |
2023 | input_wait_timeout (timeval) |
2024 | int timeval; /* Time to wait, in seconds */ | |
2025 | { | |
2026 | int time [2]; | |
2027 | static int zero = 0; | |
2028 | static int large = -10000000; | |
2029 | ||
2030 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2031 | ||
2032 | /* If already something, avoid doing system calls. */ | |
2033 | if (detect_input_pending ()) | |
2034 | { | |
2035 | return; | |
2036 | } | |
2037 | /* Clear a flag, and tell ast routine above to set it. */ | |
2038 | SYS$CLREF (input_ef); | |
2039 | waiting_for_ast = 1; | |
2040 | /* Check for timing error: ast happened while we were doing that. */ | |
2041 | if (!detect_input_pending ()) | |
2042 | { | |
2043 | /* No timing error: wait for flag to be set. */ | |
2044 | SYS$CANTIM (1, 0); | |
2045 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2046 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2047 | } | |
2048 | waiting_for_ast = 0; | |
2049 | } | |
2050 | ||
2051 | /* The standard `sleep' routine works some other way | |
2052 | and it stops working if you have ever quit out of it. | |
2053 | This one continues to work. */ | |
2054 | ||
2055 | sys_sleep (timeval) | |
2056 | int timeval; | |
2057 | { | |
2058 | int time [2]; | |
2059 | static int zero = 0; | |
2060 | static int large = -10000000; | |
2061 | ||
2062 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2063 | ||
2064 | SYS$CANTIM (1, 0); | |
2065 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2066 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2067 | } | |
2068 | ||
08633194 | 2069 | void |
23dab951 RS |
2070 | init_sigio (fd) |
2071 | int fd; | |
86a5659e JB |
2072 | { |
2073 | request_sigio (); | |
2074 | } | |
2075 | ||
2076 | reset_sigio () | |
2077 | { | |
2078 | unrequest_sigio (); | |
2079 | } | |
2080 | ||
08633194 | 2081 | void |
86a5659e JB |
2082 | request_sigio () |
2083 | { | |
2084 | croak ("request sigio"); | |
2085 | } | |
2086 | ||
08633194 | 2087 | void |
86a5659e JB |
2088 | unrequest_sigio () |
2089 | { | |
2090 | croak ("unrequest sigio"); | |
2091 | } | |
2092 | ||
2093 | #endif /* VMS */ | |
2094 | \f | |
2095 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2096 | #ifndef CANNOT_DUMP | |
2097 | #define NEED_STARTS | |
2098 | #endif | |
2099 | ||
2100 | #ifndef SYSTEM_MALLOC | |
2101 | #ifndef NEED_STARTS | |
2102 | #define NEED_STARTS | |
2103 | #endif | |
2104 | #endif | |
2105 | ||
2106 | #ifdef NEED_STARTS | |
2107 | /* Some systems that cannot dump also cannot implement these. */ | |
2108 | ||
2109 | /* | |
2110 | * Return the address of the start of the text segment prior to | |
2111 | * doing an unexec. After unexec the return value is undefined. | |
2112 | * See crt0.c for further explanation and _start. | |
2113 | * | |
2114 | */ | |
2115 | ||
260fe597 | 2116 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2117 | char * |
2118 | start_of_text () | |
2119 | { | |
2120 | #ifdef TEXT_START | |
2121 | return ((char *) TEXT_START); | |
2122 | #else | |
2123 | #ifdef GOULD | |
2124 | extern csrt (); | |
2125 | return ((char *) csrt); | |
2126 | #else /* not GOULD */ | |
2127 | extern int _start (); | |
2128 | return ((char *) _start); | |
2129 | #endif /* GOULD */ | |
2130 | #endif /* TEXT_START */ | |
2131 | } | |
260fe597 | 2132 | #endif /* not HAVE_TEXT_START */ |
86a5659e JB |
2133 | |
2134 | /* | |
2135 | * Return the address of the start of the data segment prior to | |
2136 | * doing an unexec. After unexec the return value is undefined. | |
2137 | * See crt0.c for further information and definition of data_start. | |
2138 | * | |
2139 | * Apparently, on BSD systems this is etext at startup. On | |
2140 | * USG systems (swapping) this is highly mmu dependent and | |
2141 | * is also dependent on whether or not the program is running | |
2142 | * with shared text. Generally there is a (possibly large) | |
2143 | * gap between end of text and start of data with shared text. | |
2144 | * | |
2145 | * On Uniplus+ systems with shared text, data starts at a | |
2146 | * fixed address. Each port (from a given oem) is generally | |
2147 | * different, and the specific value of the start of data can | |
2148 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2149 | * however the method outlined in crt0.c seems to be more portable. | |
2150 | * | |
2151 | * Probably what will have to happen when a USG unexec is available, | |
2152 | * at least on UniPlus, is temacs will have to be made unshared so | |
2153 | * that text and data are contiguous. Then once loadup is complete, | |
2154 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2155 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2156 | * will be patched by unexec to the correct value. |
2157 | * | |
2158 | */ | |
2159 | ||
2160 | char * | |
2161 | start_of_data () | |
2162 | { | |
2163 | #ifdef DATA_START | |
2164 | return ((char *) DATA_START); | |
6c65530f JB |
2165 | #else |
2166 | #ifdef ORDINARY_LINK | |
2167 | /* | |
2168 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2169 | * data_start isn't defined. We take the address of environ, which | |
2170 | * is known to live at or near the start of the system crt0.c, and | |
2171 | * we don't sweat the handful of bytes that might lose. | |
2172 | */ | |
2173 | extern char **environ; | |
2174 | ||
2175 | return((char *) &environ); | |
86a5659e JB |
2176 | #else |
2177 | extern int data_start; | |
2178 | return ((char *) &data_start); | |
6c65530f JB |
2179 | #endif /* ORDINARY_LINK */ |
2180 | #endif /* DATA_START */ | |
86a5659e JB |
2181 | } |
2182 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
2183 | ||
2184 | #ifndef CANNOT_DUMP | |
2185 | /* Some systems that cannot dump also cannot implement these. */ | |
2186 | ||
2187 | /* | |
2188 | * Return the address of the end of the text segment prior to | |
2189 | * doing an unexec. After unexec the return value is undefined. | |
2190 | */ | |
2191 | ||
2192 | char * | |
2193 | end_of_text () | |
2194 | { | |
2195 | #ifdef TEXT_END | |
2196 | return ((char *) TEXT_END); | |
2197 | #else | |
2198 | extern int etext; | |
2199 | return ((char *) &etext); | |
2200 | #endif | |
2201 | } | |
2202 | ||
2203 | /* | |
2204 | * Return the address of the end of the data segment prior to | |
2205 | * doing an unexec. After unexec the return value is undefined. | |
2206 | */ | |
2207 | ||
2208 | char * | |
2209 | end_of_data () | |
2210 | { | |
2211 | #ifdef DATA_END | |
2212 | return ((char *) DATA_END); | |
2213 | #else | |
2214 | extern int edata; | |
2215 | return ((char *) &edata); | |
2216 | #endif | |
2217 | } | |
2218 | ||
2219 | #endif /* not CANNOT_DUMP */ | |
2220 | \f | |
c0c86835 KH |
2221 | /* init_system_name sets up the string for the Lisp function |
2222 | system-name to return. */ | |
86a5659e JB |
2223 | |
2224 | #ifdef BSD4_1 | |
2225 | #include <whoami.h> | |
2226 | #endif | |
2227 | ||
c0c86835 | 2228 | extern Lisp_Object Vsystem_name; |
86a5659e | 2229 | |
f8a80313 | 2230 | #ifndef BSD4_1 |
f8a80313 RS |
2231 | #ifndef VMS |
2232 | #ifdef HAVE_SOCKETS | |
2233 | #include <sys/socket.h> | |
2234 | #include <netdb.h> | |
2235 | #endif /* HAVE_SOCKETS */ | |
2236 | #endif /* not VMS */ | |
f8a80313 RS |
2237 | #endif /* not BSD4_1 */ |
2238 | ||
c0c86835 KH |
2239 | void |
2240 | init_system_name () | |
86a5659e | 2241 | { |
86a5659e | 2242 | #ifdef BSD4_1 |
c0c86835 | 2243 | Vsystem_name = build_string (sysname); |
67004ffb | 2244 | #else |
67004ffb | 2245 | #ifdef VMS |
c0c86835 KH |
2246 | char *sp, *end; |
2247 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2248 | Vsystem_name = build_string ("vax-vms"); | |
2249 | else if ((end = index (sp, ':')) == 0) | |
2250 | Vsystem_name = build_string (sp); | |
2251 | else | |
2252 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2253 | #else |
210b2b4f | 2254 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2255 | struct utsname uts; |
2256 | uname (&uts); | |
2257 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2258 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2259 | unsigned int hostname_size = 256; |
c0c86835 KH |
2260 | char *hostname = (char *) alloca (hostname_size); |
2261 | ||
2262 | /* Try to get the host name; if the buffer is too short, try | |
2263 | again. Apparently, the only indication gethostname gives of | |
2264 | whether the buffer was large enough is the presence or absence | |
2265 | of a '\0' in the string. Eech. */ | |
2266 | for (;;) | |
2267 | { | |
2268 | gethostname (hostname, hostname_size - 1); | |
2269 | hostname[hostname_size - 1] = '\0'; | |
2270 | ||
2271 | /* Was the buffer large enough for the '\0'? */ | |
2272 | if (strlen (hostname) < hostname_size - 1) | |
2273 | break; | |
2274 | ||
2275 | hostname_size <<= 1; | |
2276 | hostname = (char *) alloca (hostname_size); | |
2277 | } | |
67004ffb | 2278 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2279 | /* Turn the hostname into the official, fully-qualified hostname. |
2280 | Don't do this if we're going to dump; this can confuse system | |
2281 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2282 | #ifndef CANNOT_DUMP |
c0c86835 | 2283 | if (initialized) |
67004ffb | 2284 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2285 | if (! index (hostname, '.')) |
2286 | { | |
2287 | struct hostent *hp; | |
2288 | int count; | |
2289 | for (count = 0;; count++) | |
2290 | { | |
e24f1d55 | 2291 | #ifdef TRY_AGAIN |
960d894c | 2292 | h_errno = 0; |
e24f1d55 | 2293 | #endif |
960d894c | 2294 | hp = gethostbyname (hostname); |
efa04277 | 2295 | #ifdef TRY_AGAIN |
960d894c KH |
2296 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2297 | #endif | |
2298 | break; | |
2299 | if (count >= 5) | |
2300 | break; | |
2301 | Fsleep_for (make_number (1), Qnil); | |
2302 | } | |
2303 | if (hp) | |
2304 | { | |
2305 | char *fqdn = (char *) hp->h_name; | |
2306 | char *p; | |
2307 | ||
2308 | if (!index (fqdn, '.')) | |
2309 | { | |
2310 | /* We still don't have a fully qualified domain name. | |
2311 | Try to find one in the list of alternate names */ | |
2312 | char **alias = hp->h_aliases; | |
2313 | while (*alias && !index (*alias, '.')) | |
2314 | alias++; | |
2315 | if (*alias) | |
2316 | fqdn = *alias; | |
2317 | } | |
2318 | hostname = fqdn; | |
ab1649fe | 2319 | #if 0 |
960d894c KH |
2320 | /* Convert the host name to lower case. */ |
2321 | /* Using ctype.h here would introduce a possible locale | |
2322 | dependence that is probably wrong for hostnames. */ | |
2323 | p = hostname; | |
2324 | while (*p) | |
2325 | { | |
2326 | if (*p >= 'A' && *p <= 'Z') | |
2327 | *p += 'a' - 'A'; | |
2328 | p++; | |
2329 | } | |
2330 | #endif | |
2331 | } | |
2332 | } | |
67004ffb | 2333 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2334 | /* We used to try using getdomainname here, |
2335 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2336 | getdomainname gets the NIS/YP domain which often is not the same |
2337 | as in Internet domain name. */ | |
6250a9db KH |
2338 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2339 | correct Internet domain. */ | |
0b93aa53 | 2340 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2341 | if (! index (hostname, '.')) |
2342 | { | |
2343 | /* The hostname is not fully qualified. Append the domain name. */ | |
2344 | ||
2345 | int hostlen = strlen (hostname); | |
2346 | int domain_size = 256; | |
2347 | ||
2348 | for (;;) | |
2349 | { | |
825e7e55 RS |
2350 | char *domain = (char *) alloca (domain_size + 1); |
2351 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2352 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2353 | if (sys_domain_size <= 0) | |
2354 | break; | |
2355 | if (domain_size < sys_domain_size) | |
2356 | { | |
2357 | domain_size = sys_domain_size; | |
2358 | continue; | |
2359 | } | |
b05af5d3 | 2360 | strcpy (fqdn, hostname); |
825e7e55 RS |
2361 | if (domain[0] == '.') |
2362 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2363 | else if (domain[0] != 0) |
825e7e55 RS |
2364 | { |
2365 | fqdn[hostlen] = '.'; | |
2366 | strcpy (fqdn + hostlen + 1, domain); | |
2367 | } | |
b05af5d3 PE |
2368 | hostname = fqdn; |
2369 | break; | |
2370 | } | |
2371 | } | |
0b93aa53 | 2372 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2373 | #endif /* 0 */ |
c0c86835 | 2374 | Vsystem_name = build_string (hostname); |
67004ffb | 2375 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2376 | #endif /* VMS */ |
67004ffb | 2377 | #endif /* BSD4_1 */ |
c0c86835 KH |
2378 | { |
2379 | unsigned char *p; | |
2380 | for (p = XSTRING (Vsystem_name)->data; *p; p++) | |
2381 | if (*p == ' ' || *p == '\t') | |
2382 | *p = '-'; | |
2383 | } | |
67004ffb | 2384 | } |
86a5659e | 2385 | \f |
7964ba9e | 2386 | #ifndef MSDOS |
86a5659e | 2387 | #ifndef VMS |
86d1f23a | 2388 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2389 | |
86d1f23a KH |
2390 | #include "sysselect.h" |
2391 | #undef select | |
2392 | ||
2393 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2394 | /* Cause explanatory error message at compile time, |
2395 | since the select emulation is not good enough for X. */ | |
2396 | int *x = &x_windows_lose_if_no_select_system_call; | |
2397 | #endif | |
2398 | ||
2399 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2400 | * Only checks read descriptors. | |
2401 | */ | |
2402 | /* How long to wait between checking fds in select */ | |
2403 | #define SELECT_PAUSE 1 | |
2404 | int select_alarmed; | |
2405 | ||
2406 | /* For longjmp'ing back to read_input_waiting. */ | |
2407 | ||
2408 | jmp_buf read_alarm_throw; | |
2409 | ||
2410 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2411 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2412 | ||
2413 | int read_alarm_should_throw; | |
2414 | ||
2415 | SIGTYPE | |
2416 | select_alarm () | |
2417 | { | |
2418 | select_alarmed = 1; | |
2419 | #ifdef BSD4_1 | |
2420 | sigrelse (SIGALRM); | |
2421 | #else /* not BSD4_1 */ | |
2422 | signal (SIGALRM, SIG_IGN); | |
2423 | #endif /* not BSD4_1 */ | |
2424 | if (read_alarm_should_throw) | |
2425 | longjmp (read_alarm_throw, 1); | |
2426 | } | |
2427 | ||
fe03522b | 2428 | #ifndef WINDOWSNT |
86a5659e JB |
2429 | /* Only rfds are checked. */ |
2430 | int | |
86d1f23a | 2431 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2432 | int nfds; |
86d1f23a KH |
2433 | SELECT_TYPE *rfds, *wfds, *efds; |
2434 | EMACS_TIME *timeout; | |
86a5659e | 2435 | { |
86d1f23a KH |
2436 | int ravail = 0, old_alarm; |
2437 | SELECT_TYPE orfds; | |
2438 | int timeoutval; | |
2439 | int *local_timeout; | |
86a5659e JB |
2440 | extern int proc_buffered_char[]; |
2441 | #ifndef subprocesses | |
2442 | int process_tick = 0, update_tick = 0; | |
2443 | #else | |
2444 | extern int process_tick, update_tick; | |
2445 | #endif | |
2446 | SIGTYPE (*old_trap) (); | |
2447 | unsigned char buf; | |
2448 | ||
86d1f23a KH |
2449 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2450 | /* If we're using X, then the native select will work; we only need the | |
2451 | emulation for non-X usage. */ | |
2452 | if (!NILP (Vwindow_system)) | |
2453 | return select (nfds, rfds, wfds, efds, timeout); | |
2454 | #endif | |
2455 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2456 | local_timeout = &timeoutval; | |
2457 | FD_ZERO (&orfds); | |
86a5659e JB |
2458 | if (rfds) |
2459 | { | |
2460 | orfds = *rfds; | |
86d1f23a | 2461 | FD_ZERO (rfds); |
86a5659e JB |
2462 | } |
2463 | if (wfds) | |
86d1f23a | 2464 | FD_ZERO (wfds); |
86a5659e | 2465 | if (efds) |
86d1f23a | 2466 | FD_ZERO (efds); |
86a5659e JB |
2467 | |
2468 | /* If we are looking only for the terminal, with no timeout, | |
2469 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2470 | if (*local_timeout == 100000 && process_tick == update_tick |
2471 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2472 | { |
86d1f23a KH |
2473 | int fd; |
2474 | for (fd = 1; fd < nfds; ++fd) | |
2475 | if (FD_ISSET (fd, &orfds)) | |
2476 | goto hardway; | |
86a5659e JB |
2477 | if (! detect_input_pending ()) |
2478 | read_input_waiting (); | |
86d1f23a | 2479 | FD_SET (0, rfds); |
86a5659e JB |
2480 | return 1; |
2481 | } | |
2482 | ||
86d1f23a | 2483 | hardway: |
86a5659e JB |
2484 | /* Once a second, till the timer expires, check all the flagged read |
2485 | * descriptors to see if any input is available. If there is some then | |
2486 | * set the corresponding bit in the return copy of rfds. | |
2487 | */ | |
2488 | while (1) | |
2489 | { | |
86d1f23a | 2490 | register int to_check, fd; |
86a5659e JB |
2491 | |
2492 | if (rfds) | |
2493 | { | |
86d1f23a | 2494 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2495 | { |
86d1f23a | 2496 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2497 | { |
2498 | int avail = 0, status = 0; | |
2499 | ||
86d1f23a | 2500 | if (fd == 0) |
86a5659e JB |
2501 | avail = detect_input_pending (); /* Special keyboard handler */ |
2502 | else | |
2503 | { | |
2504 | #ifdef FIONREAD | |
2505 | status = ioctl (fd, FIONREAD, &avail); | |
2506 | #else /* no FIONREAD */ | |
2507 | /* Hoping it will return -1 if nothing available | |
2508 | or 0 if all 0 chars requested are read. */ | |
2509 | if (proc_buffered_char[fd] >= 0) | |
2510 | avail = 1; | |
2511 | else | |
2512 | { | |
2513 | avail = read (fd, &buf, 1); | |
2514 | if (avail > 0) | |
2515 | proc_buffered_char[fd] = buf; | |
2516 | } | |
2517 | #endif /* no FIONREAD */ | |
2518 | } | |
2519 | if (status >= 0 && avail > 0) | |
2520 | { | |
86d1f23a | 2521 | FD_SET (fd, rfds); |
86a5659e JB |
2522 | ravail++; |
2523 | } | |
2524 | } | |
2525 | } | |
2526 | } | |
2527 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2528 | break; | |
2529 | old_alarm = alarm (0); | |
34567704 | 2530 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2531 | select_alarmed = 0; |
2532 | alarm (SELECT_PAUSE); | |
2533 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2534 | while (select_alarmed == 0 && *local_timeout != 0 | |
2535 | && process_tick == update_tick) | |
2536 | { | |
2537 | /* If we are interested in terminal input, | |
2538 | wait by reading the terminal. | |
2539 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2540 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2541 | { |
2542 | read_input_waiting (); | |
2543 | if (detect_input_pending ()) | |
2544 | select_alarmed = 1; | |
2545 | } | |
2546 | else | |
2547 | pause (); | |
2548 | } | |
2549 | (*local_timeout) -= SELECT_PAUSE; | |
2550 | /* Reset the old alarm if there was one */ | |
2551 | alarm (0); | |
2552 | signal (SIGALRM, old_trap); | |
2553 | if (old_alarm != 0) | |
2554 | { | |
2555 | /* Reset or forge an interrupt for the original handler. */ | |
2556 | old_alarm -= SELECT_PAUSE; | |
2557 | if (old_alarm <= 0) | |
2558 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2559 | else | |
2560 | alarm (old_alarm); | |
2561 | } | |
2562 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2563 | break; | |
2564 | } | |
2565 | return ravail; | |
2566 | } | |
fe03522b | 2567 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2568 | |
2569 | /* Read keyboard input into the standard buffer, | |
2570 | waiting for at least one character. */ | |
2571 | ||
23cafe43 GV |
2572 | /* Make all keyboard buffers much bigger when using a window system. */ |
2573 | #ifdef HAVE_WINDOW_SYSTEM | |
86a5659e JB |
2574 | #define BUFFER_SIZE_FACTOR 16 |
2575 | #else | |
2576 | #define BUFFER_SIZE_FACTOR 1 | |
2577 | #endif | |
2578 | ||
dfcf069d | 2579 | void |
86a5659e JB |
2580 | read_input_waiting () |
2581 | { | |
86a5659e | 2582 | struct input_event e; |
34567704 JB |
2583 | int nread, i; |
2584 | extern int quit_char; | |
86a5659e JB |
2585 | |
2586 | if (read_socket_hook) | |
2587 | { | |
f4a7e5bd RS |
2588 | struct input_event buf[256]; |
2589 | ||
86a5659e JB |
2590 | read_alarm_should_throw = 0; |
2591 | if (! setjmp (read_alarm_throw)) | |
f4a7e5bd | 2592 | nread = (*read_socket_hook) (0, buf, 256, 1, 0); |
86a5659e JB |
2593 | else |
2594 | nread = -1; | |
f4a7e5bd RS |
2595 | |
2596 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2597 | for (i = 0; i < nread; i++) | |
2598 | { | |
2599 | kbd_buffer_store_event (&buf[i]); | |
2600 | /* Don't look at input that follows a C-g too closely. | |
2601 | This reduces lossage due to autorepeat on C-g. */ | |
2602 | if (buf[i].kind == ascii_keystroke | |
30bef8ec | 2603 | && buf[i].code == quit_char) |
f4a7e5bd RS |
2604 | break; |
2605 | } | |
86a5659e JB |
2606 | } |
2607 | else | |
86a5659e | 2608 | { |
f4a7e5bd RS |
2609 | char buf[3]; |
2610 | nread = read (fileno (stdin), buf, 1); | |
2611 | ||
2612 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2613 | e.kind = ascii_keystroke; | |
bd513d9d | 2614 | XSETFRAME (e.frame_or_window, selected_frame); |
f4a7e5bd RS |
2615 | e.modifiers = 0; |
2616 | for (i = 0; i < nread; i++) | |
a00d5589 | 2617 | { |
f4a7e5bd RS |
2618 | /* Convert chars > 0177 to meta events if desired. |
2619 | We do this under the same conditions that read_avail_input does. */ | |
2620 | if (read_socket_hook == 0) | |
2621 | { | |
2622 | /* If the user says she has a meta key, then believe her. */ | |
2623 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2624 | e.modifiers = meta_modifier; | |
2625 | if (meta_key != 2) | |
2626 | buf[i] &= ~0x80; | |
2627 | } | |
b95520f5 | 2628 | |
c81d47b4 | 2629 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2630 | kbd_buffer_store_event (&e); |
2631 | /* Don't look at input that follows a C-g too closely. | |
2632 | This reduces lossage due to autorepeat on C-g. */ | |
2633 | if (buf[i] == quit_char) | |
2634 | break; | |
2635 | } | |
86a5659e JB |
2636 | } |
2637 | } | |
2638 | ||
2639 | #endif /* not HAVE_SELECT */ | |
2640 | #endif /* not VMS */ | |
7964ba9e | 2641 | #endif /* not MSDOS */ |
86a5659e JB |
2642 | \f |
2643 | #ifdef BSD4_1 | |
86a5659e JB |
2644 | /* |
2645 | * Partially emulate 4.2 open call. | |
2646 | * open is defined as this in 4.1. | |
2647 | * | |
2648 | * - added by Michael Bloom @ Citicorp/TTI | |
2649 | * | |
2650 | */ | |
2651 | ||
2652 | int | |
2653 | sys_open (path, oflag, mode) | |
2654 | char *path; | |
2655 | int oflag, mode; | |
2656 | { | |
2657 | if (oflag & O_CREAT) | |
2658 | return creat (path, mode); | |
2659 | else | |
2660 | return open (path, oflag); | |
2661 | } | |
2662 | ||
08633194 | 2663 | void |
23dab951 RS |
2664 | init_sigio (fd) |
2665 | int fd; | |
86a5659e JB |
2666 | { |
2667 | if (noninteractive) | |
2668 | return; | |
2669 | lmode = LINTRUP | lmode; | |
23dab951 | 2670 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2671 | } |
2672 | ||
dfcf069d | 2673 | void |
86a5659e JB |
2674 | reset_sigio () |
2675 | { | |
2676 | if (noninteractive) | |
2677 | return; | |
2678 | lmode = ~LINTRUP & lmode; | |
2679 | ioctl (0, TIOCLSET, &lmode); | |
2680 | } | |
2681 | ||
08633194 | 2682 | void |
86a5659e JB |
2683 | request_sigio () |
2684 | { | |
2685 | sigrelse (SIGTINT); | |
2686 | ||
2687 | interrupts_deferred = 0; | |
2688 | } | |
2689 | ||
08633194 | 2690 | void |
86a5659e JB |
2691 | unrequest_sigio () |
2692 | { | |
2693 | sighold (SIGTINT); | |
2694 | ||
2695 | interrupts_deferred = 1; | |
2696 | } | |
2697 | ||
2698 | /* still inside #ifdef BSD4_1 */ | |
2699 | #ifdef subprocesses | |
2700 | ||
2701 | int sigheld; /* Mask of held signals */ | |
2702 | ||
dfcf069d | 2703 | void |
86a5659e JB |
2704 | sigholdx (signum) |
2705 | int signum; | |
2706 | { | |
2707 | sigheld |= sigbit (signum); | |
2708 | sighold (signum); | |
2709 | } | |
2710 | ||
dfcf069d | 2711 | void |
86a5659e JB |
2712 | sigisheld (signum) |
2713 | int signum; | |
2714 | { | |
2715 | sigheld |= sigbit (signum); | |
2716 | } | |
2717 | ||
dfcf069d | 2718 | void |
86a5659e JB |
2719 | sigunhold (signum) |
2720 | int signum; | |
2721 | { | |
2722 | sigheld &= ~sigbit (signum); | |
2723 | sigrelse (signum); | |
2724 | } | |
2725 | ||
dfcf069d | 2726 | void |
86a5659e JB |
2727 | sigfree () /* Free all held signals */ |
2728 | { | |
2729 | int i; | |
2730 | for (i = 0; i < NSIG; i++) | |
2731 | if (sigheld & sigbit (i)) | |
2732 | sigrelse (i); | |
2733 | sigheld = 0; | |
2734 | } | |
2735 | ||
dfcf069d | 2736 | int |
86a5659e JB |
2737 | sigbit (i) |
2738 | { | |
2739 | return 1 << (i - 1); | |
2740 | } | |
2741 | #endif /* subprocesses */ | |
2742 | #endif /* BSD4_1 */ | |
2743 | \f | |
2744 | /* POSIX signals support - DJB */ | |
2745 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2746 | ||
2747 | #ifdef POSIX_SIGNALS | |
2748 | ||
c639b0e3 | 2749 | sigset_t empty_mask, full_mask; |
86a5659e | 2750 | |
dfcf069d | 2751 | void |
86a5659e JB |
2752 | init_signals () |
2753 | { | |
00eaaa32 JB |
2754 | sigemptyset (&empty_mask); |
2755 | sigfillset (&full_mask); | |
86a5659e JB |
2756 | } |
2757 | ||
86a5659e JB |
2758 | signal_handler_t |
2759 | sys_signal (int signal_number, signal_handler_t action) | |
2760 | { | |
c639b0e3 | 2761 | struct sigaction new_action, old_action; |
86a5659e | 2762 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2763 | new_action.sa_handler = action; |
25ab68af RS |
2764 | #ifdef SA_RESTART |
2765 | /* Emacs mostly works better with restartable system services. If this | |
2766 | * flag exists, we probably want to turn it on here. | |
2767 | */ | |
2768 | new_action.sa_flags = SA_RESTART; | |
2769 | #else | |
4a785b6e | 2770 | new_action.sa_flags = 0; |
25ab68af | 2771 | #endif |
d32b2f3c | 2772 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2773 | return (old_action.sa_handler); |
86a5659e JB |
2774 | } |
2775 | ||
e065a56e JB |
2776 | #ifndef __GNUC__ |
2777 | /* If we're compiling with GCC, we don't need this function, since it | |
2778 | can be written as a macro. */ | |
2779 | sigset_t | |
2780 | sys_sigmask (int sig) | |
2781 | { | |
2782 | sigset_t mask; | |
2783 | sigemptyset (&mask); | |
2784 | sigaddset (&mask, sig); | |
2785 | return mask; | |
2786 | } | |
2787 | #endif | |
2788 | ||
86a5659e JB |
2789 | /* I'd like to have these guys return pointers to the mask storage in here, |
2790 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2791 | safe and pass the structure. It normally won't be more than 2 bytes | |
2792 | anyhow. - DJB */ | |
2793 | ||
2794 | sigset_t | |
2795 | sys_sigblock (sigset_t new_mask) | |
2796 | { | |
2797 | sigset_t old_mask; | |
2798 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2799 | return (old_mask); | |
2800 | } | |
2801 | ||
2802 | sigset_t | |
2803 | sys_sigunblock (sigset_t new_mask) | |
2804 | { | |
2805 | sigset_t old_mask; | |
2806 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2807 | return (old_mask); | |
2808 | } | |
2809 | ||
2810 | sigset_t | |
2811 | sys_sigsetmask (sigset_t new_mask) | |
2812 | { | |
2813 | sigset_t old_mask; | |
2814 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2815 | return (old_mask); | |
2816 | } | |
2817 | ||
2818 | #endif /* POSIX_SIGNALS */ | |
2819 | \f | |
9927a7b1 | 2820 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
2821 | #ifdef random |
2822 | #define HAVE_RANDOM | |
2823 | #endif | |
2824 | #endif | |
2825 | ||
2826 | /* Figure out how many bits the system's random number generator uses. | |
2827 | `random' and `lrand48' are assumed to return 31 usable bits. | |
2828 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
2829 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
2830 | ||
2831 | #ifndef RAND_BITS | |
2832 | # ifdef HAVE_RANDOM | |
2833 | # define RAND_BITS 31 | |
2834 | # else /* !HAVE_RANDOM */ | |
2835 | # ifdef HAVE_LRAND48 | |
2836 | # define RAND_BITS 31 | |
2837 | # define random lrand48 | |
2838 | # else /* !HAVE_LRAND48 */ | |
2839 | # define RAND_BITS 15 | |
2840 | # if RAND_MAX == 32767 | |
2841 | # define random rand | |
2842 | # else /* RAND_MAX != 32767 */ | |
2843 | # if RAND_MAX == 2147483647 | |
2844 | # define random() (rand () >> 16) | |
2845 | # else /* RAND_MAX != 2147483647 */ | |
2846 | # ifdef USG | |
2847 | # define random rand | |
2848 | # else | |
2849 | # define random() (rand () >> 16) | |
2a633456 | 2850 | # endif /* !USG */ |
4bb8c8b7 KH |
2851 | # endif /* RAND_MAX != 2147483647 */ |
2852 | # endif /* RAND_MAX != 32767 */ | |
2853 | # endif /* !HAVE_LRAND48 */ | |
2854 | # endif /* !HAVE_RANDOM */ | |
2855 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2856 | |
4bb8c8b7 KH |
2857 | void |
2858 | seed_random (arg) | |
2859 | long arg; | |
86a5659e | 2860 | { |
4bb8c8b7 KH |
2861 | #ifdef HAVE_RANDOM |
2862 | srandom ((unsigned int)arg); | |
f8b53a82 | 2863 | #else |
4bb8c8b7 | 2864 | # ifdef HAVE_LRAND48 |
76425a49 | 2865 | srand48 (arg); |
4bb8c8b7 KH |
2866 | # else |
2867 | srand ((unsigned int)arg); | |
2868 | # endif | |
2e46c7c6 | 2869 | #endif |
86a5659e JB |
2870 | } |
2871 | ||
4bb8c8b7 KH |
2872 | /* |
2873 | * Build a full Emacs-sized word out of whatever we've got. | |
2874 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
2875 | */ | |
2876 | long | |
2877 | get_random () | |
2878 | { | |
2879 | long val = random (); | |
2880 | #if VALBITS > RAND_BITS | |
2881 | val = (val << RAND_BITS) ^ random (); | |
2882 | #if VALBITS > 2*RAND_BITS | |
2883 | val = (val << RAND_BITS) ^ random (); | |
2884 | #if VALBITS > 3*RAND_BITS | |
2885 | val = (val << RAND_BITS) ^ random (); | |
2886 | #if VALBITS > 4*RAND_BITS | |
2887 | val = (val << RAND_BITS) ^ random (); | |
2888 | #endif /* need at least 5 */ | |
2889 | #endif /* need at least 4 */ | |
2890 | #endif /* need at least 3 */ | |
2891 | #endif /* need at least 2 */ | |
2892 | return val & ((1L << VALBITS) - 1); | |
2893 | } | |
86a5659e JB |
2894 | \f |
2895 | #ifdef WRONG_NAME_INSQUE | |
2896 | ||
2897 | insque (q,p) | |
2898 | caddr_t q,p; | |
2899 | { | |
2900 | _insque (q,p); | |
2901 | } | |
2902 | ||
2903 | #endif | |
2904 | \f | |
2905 | #ifdef VMS | |
2906 | ||
2907 | #ifdef getenv | |
2908 | /* If any place else asks for the TERM variable, | |
2909 | allow it to be overridden with the EMACS_TERM variable | |
2910 | before attempting to translate the logical name TERM. As a last | |
2911 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2912 | #undef getenv | |
2913 | char * | |
2914 | sys_getenv (name) | |
2915 | char *name; | |
2916 | { | |
2917 | register char *val; | |
2918 | static char buf[256]; | |
2919 | static struct dsc$descriptor_s equiv | |
2920 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2921 | static struct dsc$descriptor_s d_name | |
2922 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2923 | short eqlen; | |
2924 | ||
2925 | if (!strcmp (name, "TERM")) | |
2926 | { | |
2927 | val = (char *) getenv ("EMACS_TERM"); | |
2928 | if (val) | |
2929 | return val; | |
2930 | } | |
2931 | ||
2932 | d_name.dsc$w_length = strlen (name); | |
2933 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2934 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2935 | { |
2936 | char *str = (char *) xmalloc (eqlen + 1); | |
2937 | bcopy (buf, str, eqlen); | |
2938 | str[eqlen] = '\0'; | |
2939 | /* This is a storage leak, but a pain to fix. With luck, | |
2940 | no one will ever notice. */ | |
2941 | return str; | |
2942 | } | |
2943 | return (char *) getenv (name); | |
2944 | } | |
2945 | #endif /* getenv */ | |
2946 | ||
2947 | #ifdef abort | |
2948 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2949 | to force a call on the debugger from within the image. */ | |
2950 | #undef abort | |
2951 | sys_abort () | |
2952 | { | |
2953 | reset_sys_modes (); | |
2954 | LIB$SIGNAL (SS$_DEBUG); | |
2955 | } | |
2956 | #endif /* abort */ | |
2957 | #endif /* VMS */ | |
2958 | \f | |
2959 | #ifdef VMS | |
2960 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 2961 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 2962 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2963 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2964 | version which is uninitialized... If not for this "feature", we | |
2965 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2966 | int sys_nerr = 35; | |
2967 | char *sys_errlist[] = | |
2968 | { | |
2969 | "error 0", | |
2970 | "not owner", | |
2971 | "no such file or directory", | |
2972 | "no such process", | |
2973 | "interrupted system call", | |
2974 | "i/o error", | |
2975 | "no such device or address", | |
2976 | "argument list too long", | |
2977 | "exec format error", | |
2978 | "bad file number", | |
2979 | "no child process", | |
2980 | "no more processes", | |
2981 | "not enough memory", | |
2982 | "permission denied", | |
2983 | "bad address", | |
2984 | "block device required", | |
2985 | "mount devices busy", | |
2986 | "file exists", | |
2987 | "cross-device link", | |
2988 | "no such device", | |
2989 | "not a directory", | |
2990 | "is a directory", | |
2991 | "invalid argument", | |
2992 | "file table overflow", | |
2993 | "too many open files", | |
2994 | "not a typewriter", | |
2995 | "text file busy", | |
2996 | "file too big", | |
2997 | "no space left on device", | |
2998 | "illegal seek", | |
2999 | "read-only file system", | |
3000 | "too many links", | |
3001 | "broken pipe", | |
3002 | "math argument", | |
3003 | "result too large", | |
3004 | "I/O stream empty", | |
3005 | "vax/vms specific error code nontranslatable error" | |
3006 | }; | |
ea5a0917 | 3007 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
3008 | #endif /* LINK_CRTL_SHARE */ |
3009 | #endif /* VMS */ | |
7088d1ca RM |
3010 | |
3011 | #ifndef HAVE_STRERROR | |
fe03522b | 3012 | #ifndef WINDOWSNT |
7088d1ca RM |
3013 | char * |
3014 | strerror (errnum) | |
3015 | int errnum; | |
3016 | { | |
3017 | extern char *sys_errlist[]; | |
3018 | extern int sys_nerr; | |
3019 | ||
3020 | if (errnum >= 0 && errnum < sys_nerr) | |
3021 | return sys_errlist[errnum]; | |
3022 | return (char *) "Unknown error"; | |
3023 | } | |
fe03522b | 3024 | #endif /* not WINDOWSNT */ |
7088d1ca | 3025 | #endif /* ! HAVE_STRERROR */ |
86a5659e JB |
3026 | \f |
3027 | #ifdef INTERRUPTIBLE_OPEN | |
3028 | ||
3029 | int | |
3030 | /* VARARGS 2 */ | |
3031 | sys_open (path, oflag, mode) | |
3032 | char *path; | |
3033 | int oflag, mode; | |
3034 | { | |
3035 | register int rtnval; | |
3036 | ||
3037 | while ((rtnval = open (path, oflag, mode)) == -1 | |
3038 | && (errno == EINTR)); | |
3039 | return (rtnval); | |
3040 | } | |
3041 | ||
3042 | #endif /* INTERRUPTIBLE_OPEN */ | |
3043 | ||
3044 | #ifdef INTERRUPTIBLE_CLOSE | |
3045 | ||
dfcf069d | 3046 | int |
86a5659e JB |
3047 | sys_close (fd) |
3048 | int fd; | |
3049 | { | |
fe111daf | 3050 | int did_retry = 0; |
86a5659e JB |
3051 | register int rtnval; |
3052 | ||
3053 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3054 | && (errno == EINTR)) |
3055 | did_retry = 1; | |
3056 | ||
3057 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3058 | file descriptor. If it did the second close will fail with | |
3059 | errno = EBADF. That means we have succeeded. */ | |
3060 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3061 | return 0; | |
3062 | ||
86a5659e JB |
3063 | return rtnval; |
3064 | } | |
3065 | ||
3066 | #endif /* INTERRUPTIBLE_CLOSE */ | |
3067 | ||
3068 | #ifdef INTERRUPTIBLE_IO | |
3069 | ||
3070 | int | |
3071 | sys_read (fildes, buf, nbyte) | |
3072 | int fildes; | |
3073 | char *buf; | |
3074 | unsigned int nbyte; | |
3075 | { | |
3076 | register int rtnval; | |
3077 | ||
3078 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
3079 | && (errno == EINTR)); | |
3080 | return (rtnval); | |
3081 | } | |
3082 | ||
3083 | int | |
3084 | sys_write (fildes, buf, nbyte) | |
3085 | int fildes; | |
3086 | char *buf; | |
3087 | unsigned int nbyte; | |
3088 | { | |
b95520f5 | 3089 | register int rtnval, bytes_written; |
86a5659e | 3090 | |
b95520f5 BF |
3091 | bytes_written = 0; |
3092 | ||
3093 | while (nbyte > 0) | |
3094 | { | |
3095 | rtnval = write (fildes, buf, nbyte); | |
3096 | ||
3097 | if (rtnval == -1) | |
3098 | { | |
3099 | if (errno == EINTR) | |
3100 | continue; | |
3101 | else | |
aa670904 | 3102 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3103 | } |
3104 | ||
3105 | buf += rtnval; | |
3106 | nbyte -= rtnval; | |
3107 | bytes_written += rtnval; | |
3108 | } | |
3109 | return (bytes_written); | |
86a5659e JB |
3110 | } |
3111 | ||
3112 | #endif /* INTERRUPTIBLE_IO */ | |
3113 | \f | |
0e18d8ef | 3114 | #ifndef HAVE_VFORK |
fe03522b | 3115 | #ifndef WINDOWSNT |
0e18d8ef | 3116 | /* |
fe03522b | 3117 | * Substitute fork for vfork on USG flavors. |
0e18d8ef RS |
3118 | */ |
3119 | ||
e336874b | 3120 | VFORK_RETURN_TYPE |
0e18d8ef RS |
3121 | vfork () |
3122 | { | |
3123 | return (fork ()); | |
3124 | } | |
fe03522b | 3125 | #endif /* not WINDOWSNT */ |
0e18d8ef RS |
3126 | #endif /* not HAVE_VFORK */ |
3127 | \f | |
86a5659e JB |
3128 | #ifdef USG |
3129 | /* | |
3130 | * All of the following are for USG. | |
3131 | * | |
3132 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3133 | * that the user program has elected to catch. Thus the system call | |
3134 | * must be retried in these cases. To handle this without massive | |
3135 | * changes in the source code, we remap the standard system call names | |
3136 | * to names for our own functions in sysdep.c that do the system call | |
3137 | * with retries. Actually, for portability reasons, it is good | |
3138 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3139 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3140 | * adds an extra level of function call overhead but it is almost |
3141 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3142 | */ | |
3143 | ||
00eaaa32 | 3144 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
3145 | char *sys_siglist[NSIG + 1] = |
3146 | { | |
3147 | #ifdef AIX | |
3148 | /* AIX has changed the signals a bit */ | |
3149 | "bogus signal", /* 0 */ | |
3150 | "hangup", /* 1 SIGHUP */ | |
3151 | "interrupt", /* 2 SIGINT */ | |
3152 | "quit", /* 3 SIGQUIT */ | |
3153 | "illegal instruction", /* 4 SIGILL */ | |
3154 | "trace trap", /* 5 SIGTRAP */ | |
3155 | "IOT instruction", /* 6 SIGIOT */ | |
3156 | "crash likely", /* 7 SIGDANGER */ | |
3157 | "floating point exception", /* 8 SIGFPE */ | |
3158 | "kill", /* 9 SIGKILL */ | |
3159 | "bus error", /* 10 SIGBUS */ | |
3160 | "segmentation violation", /* 11 SIGSEGV */ | |
3161 | "bad argument to system call", /* 12 SIGSYS */ | |
3162 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3163 | "alarm clock", /* 14 SIGALRM */ | |
3164 | "software termination signum", /* 15 SIGTERM */ | |
3165 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3166 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3167 | "death of a child", /* 18 SIGCLD */ | |
3168 | "power-fail restart", /* 19 SIGPWR */ | |
3169 | "bogus signal", /* 20 */ | |
3170 | "bogus signal", /* 21 */ | |
3171 | "bogus signal", /* 22 */ | |
3172 | "bogus signal", /* 23 */ | |
3173 | "bogus signal", /* 24 */ | |
3174 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
3175 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
3176 | "I/O intervention required", /* 27 SIGIOINT */ | |
6056c55b | 3177 | #ifdef AIXHFT |
86a5659e JB |
3178 | "HFT grant", /* 28 SIGGRANT */ |
3179 | "HFT retract", /* 29 SIGRETRACT */ | |
3180 | "HFT sound done", /* 30 SIGSOUND */ | |
3181 | "HFT input ready", /* 31 SIGMSG */ | |
6056c55b | 3182 | #endif |
86a5659e JB |
3183 | #else /* not AIX */ |
3184 | "bogus signal", /* 0 */ | |
3185 | "hangup", /* 1 SIGHUP */ | |
3186 | "interrupt", /* 2 SIGINT */ | |
3187 | "quit", /* 3 SIGQUIT */ | |
3188 | "illegal instruction", /* 4 SIGILL */ | |
3189 | "trace trap", /* 5 SIGTRAP */ | |
3190 | "IOT instruction", /* 6 SIGIOT */ | |
3191 | "EMT instruction", /* 7 SIGEMT */ | |
3192 | "floating point exception", /* 8 SIGFPE */ | |
3193 | "kill", /* 9 SIGKILL */ | |
3194 | "bus error", /* 10 SIGBUS */ | |
3195 | "segmentation violation", /* 11 SIGSEGV */ | |
3196 | "bad argument to system call", /* 12 SIGSYS */ | |
3197 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3198 | "alarm clock", /* 14 SIGALRM */ | |
3199 | "software termination signum", /* 15 SIGTERM */ | |
3200 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3201 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3202 | "death of a child", /* 18 SIGCLD */ | |
3203 | "power-fail restart", /* 19 SIGPWR */ | |
0f0ea229 RS |
3204 | #ifdef sun |
3205 | "window size change", /* 20 SIGWINCH */ | |
3206 | "urgent socket condition", /* 21 SIGURG */ | |
ea5a0917 | 3207 | "pollable event occurred", /* 22 SIGPOLL */ |
0f0ea229 RS |
3208 | "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ |
3209 | "user stop requested from tty", /* 24 SIGTSTP */ | |
3210 | "stopped process has been continued", /* 25 SIGCONT */ | |
3211 | "background tty read attempted", /* 26 SIGTTIN */ | |
3212 | "background tty write attempted", /* 27 SIGTTOU */ | |
3213 | "virtual timer expired", /* 28 SIGVTALRM */ | |
3214 | "profiling timer expired", /* 29 SIGPROF */ | |
3215 | "exceeded cpu limit", /* 30 SIGXCPU */ | |
3216 | "exceeded file size limit", /* 31 SIGXFSZ */ | |
3217 | "process's lwps are blocked", /* 32 SIGWAITING */ | |
3218 | "special signal used by thread library", /* 33 SIGLWP */ | |
2da0df4d | 3219 | #ifdef SIGFREEZE |
0f0ea229 | 3220 | "Special Signal Used By CPR", /* 34 SIGFREEZE */ |
2da0df4d RS |
3221 | #endif |
3222 | #ifdef SIGTHAW | |
0f0ea229 | 3223 | "Special Signal Used By CPR", /* 35 SIGTHAW */ |
2da0df4d | 3224 | #endif |
0f0ea229 | 3225 | #endif /* sun */ |
86a5659e JB |
3226 | #endif /* not AIX */ |
3227 | 0 | |
3228 | }; | |
70080de1 | 3229 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
3230 | |
3231 | /* | |
3232 | * Warning, this function may not duplicate 4.2 action properly | |
3233 | * under error conditions. | |
3234 | */ | |
3235 | ||
3236 | #ifndef MAXPATHLEN | |
3237 | /* In 4.1, param.h fails to define this. */ | |
3238 | #define MAXPATHLEN 1024 | |
3239 | #endif | |
3240 | ||
3241 | #ifndef HAVE_GETWD | |
3242 | ||
3243 | char * | |
3244 | getwd (pathname) | |
3245 | char *pathname; | |
3246 | { | |
3247 | char *npath, *spath; | |
3248 | extern char *getcwd (); | |
3249 | ||
9ac0d9e0 | 3250 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3251 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
3252 | if (spath == 0) |
3253 | return spath; | |
86a5659e JB |
3254 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3255 | up to first slash. Should be harmless on other systems. */ | |
3256 | while (*npath && *npath != '/') | |
3257 | npath++; | |
3258 | strcpy (pathname, npath); | |
3259 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3260 | UNBLOCK_INPUT; |
86a5659e JB |
3261 | return pathname; |
3262 | } | |
3263 | ||
3264 | #endif /* HAVE_GETWD */ | |
3265 | ||
3266 | /* | |
3267 | * Emulate rename using unlink/link. Note that this is | |
3268 | * only partially correct. Also, doesn't enforce restriction | |
3269 | * that files be of same type (regular->regular, dir->dir, etc). | |
3270 | */ | |
3271 | ||
4746118a JB |
3272 | #ifndef HAVE_RENAME |
3273 | ||
86a5659e | 3274 | rename (from, to) |
19c7afdf JB |
3275 | const char *from; |
3276 | const char *to; | |
86a5659e JB |
3277 | { |
3278 | if (access (from, 0) == 0) | |
3279 | { | |
3280 | unlink (to); | |
3281 | if (link (from, to) == 0) | |
3282 | if (unlink (from) == 0) | |
3283 | return (0); | |
3284 | } | |
3285 | return (-1); | |
3286 | } | |
3287 | ||
4746118a JB |
3288 | #endif |
3289 | ||
86a5659e JB |
3290 | |
3291 | #ifdef HPUX | |
3292 | #ifndef HAVE_PERROR | |
3293 | ||
3294 | /* HPUX curses library references perror, but as far as we know | |
3295 | it won't be called. Anyway this definition will do for now. */ | |
3296 | ||
3297 | perror () | |
3298 | { | |
3299 | } | |
3300 | ||
3301 | #endif /* not HAVE_PERROR */ | |
3302 | #endif /* HPUX */ | |
3303 | ||
3304 | #ifndef HAVE_DUP2 | |
3305 | ||
3306 | /* | |
3307 | * Emulate BSD dup2. First close newd if it already exists. | |
3308 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3309 | * until we are, then close the unsuccessful ones. | |
3310 | */ | |
3311 | ||
3312 | dup2 (oldd, newd) | |
3313 | int oldd; | |
3314 | int newd; | |
3315 | { | |
3316 | register int fd, ret; | |
3317 | ||
3318 | sys_close (newd); | |
3319 | ||
3320 | #ifdef F_DUPFD | |
3321 | fd = fcntl (oldd, F_DUPFD, newd); | |
3322 | if (fd != newd) | |
7088d1ca | 3323 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
86a5659e JB |
3324 | #else |
3325 | fd = dup (old); | |
3326 | if (fd == -1) | |
3327 | return -1; | |
3328 | if (fd == new) | |
3329 | return new; | |
3330 | ret = dup2 (old,new); | |
3331 | sys_close (fd); | |
3332 | return ret; | |
3333 | #endif | |
3334 | } | |
3335 | ||
3336 | #endif /* not HAVE_DUP2 */ | |
3337 | ||
3338 | /* | |
3339 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3340 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3341 | * Only needed when subprocesses are defined. | |
3342 | */ | |
3343 | ||
3344 | #ifdef subprocesses | |
3345 | #ifndef VMS | |
3346 | #ifndef HAVE_GETTIMEOFDAY | |
3347 | #ifdef HAVE_TIMEVAL | |
3348 | ||
3349 | /* ARGSUSED */ | |
dfcf069d | 3350 | int |
86a5659e JB |
3351 | gettimeofday (tp, tzp) |
3352 | struct timeval *tp; | |
3353 | struct timezone *tzp; | |
3354 | { | |
3355 | extern long time (); | |
3356 | ||
3357 | tp->tv_sec = time ((long *)0); | |
3358 | tp->tv_usec = 0; | |
4ca7594f RS |
3359 | if (tzp != 0) |
3360 | tzp->tz_minuteswest = -1; | |
dfcf069d | 3361 | return 0; |
86a5659e JB |
3362 | } |
3363 | ||
3364 | #endif | |
3365 | #endif | |
3366 | #endif | |
3367 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3368 | ||
3369 | /* | |
3370 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3371 | */ | |
3372 | ||
dfcf069d | 3373 | void |
86a5659e JB |
3374 | croak (badfunc) |
3375 | char *badfunc; | |
3376 | { | |
3377 | printf ("%s not yet implemented\r\n", badfunc); | |
3378 | reset_sys_modes (); | |
3379 | exit (1); | |
3380 | } | |
3381 | ||
3382 | #endif /* USG */ | |
3383 | \f | |
3384 | #ifdef DGUX | |
3385 | ||
3386 | char *sys_siglist[NSIG + 1] = | |
3387 | { | |
3388 | "null signal", /* 0 SIGNULL */ | |
3389 | "hangup", /* 1 SIGHUP */ | |
3390 | "interrupt", /* 2 SIGINT */ | |
3391 | "quit", /* 3 SIGQUIT */ | |
3392 | "illegal instruction", /* 4 SIGILL */ | |
3393 | "trace trap", /* 5 SIGTRAP */ | |
3394 | "abort termination", /* 6 SIGABRT */ | |
3395 | "SIGEMT", /* 7 SIGEMT */ | |
3396 | "floating point exception", /* 8 SIGFPE */ | |
3397 | "kill", /* 9 SIGKILL */ | |
3398 | "bus error", /* 10 SIGBUS */ | |
3399 | "segmentation violation", /* 11 SIGSEGV */ | |
3400 | "bad argument to system call", /* 12 SIGSYS */ | |
3401 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
3402 | "alarm clock", /* 14 SIGALRM */ | |
3403 | "software termination signal", /* 15 SIGTERM */ | |
3404 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3405 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3406 | "child stopped or terminated", /* 18 SIGCLD */ | |
3407 | "power-fail restart", /* 19 SIGPWR */ | |
3408 | "window size changed", /* 20 SIGWINCH */ | |
3409 | "undefined", /* 21 */ | |
eb8c3be9 | 3410 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
3411 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
3412 | "stop signal from tty", /* 24 SIGSTP */ | |
3413 | "continue a stopped process", /* 25 SIGCONT */ | |
3414 | "attempted background tty read", /* 26 SIGTTIN */ | |
3415 | "attempted background tty write", /* 27 SIGTTOU */ | |
3416 | "undefined", /* 28 */ | |
3417 | "undefined", /* 29 */ | |
3418 | "undefined", /* 30 */ | |
3419 | "undefined", /* 31 */ | |
3420 | "undefined", /* 32 */ | |
3421 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
3422 | "I/O is possible", /* 34 SIGIO */ | |
3423 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
3424 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
3425 | "virtual time alarm", /* 37 SIGVTALRM */ | |
3426 | "profiling time alarm", /* 38 SIGPROF */ | |
3427 | "undefined", /* 39 */ | |
3428 | "file record locks revoked", /* 40 SIGLOST */ | |
3429 | "undefined", /* 41 */ | |
3430 | "undefined", /* 42 */ | |
3431 | "undefined", /* 43 */ | |
3432 | "undefined", /* 44 */ | |
3433 | "undefined", /* 45 */ | |
3434 | "undefined", /* 46 */ | |
3435 | "undefined", /* 47 */ | |
3436 | "undefined", /* 48 */ | |
3437 | "undefined", /* 49 */ | |
3438 | "undefined", /* 50 */ | |
3439 | "undefined", /* 51 */ | |
3440 | "undefined", /* 52 */ | |
3441 | "undefined", /* 53 */ | |
3442 | "undefined", /* 54 */ | |
3443 | "undefined", /* 55 */ | |
3444 | "undefined", /* 56 */ | |
3445 | "undefined", /* 57 */ | |
3446 | "undefined", /* 58 */ | |
3447 | "undefined", /* 59 */ | |
3448 | "undefined", /* 60 */ | |
3449 | "undefined", /* 61 */ | |
3450 | "undefined", /* 62 */ | |
3451 | "undefined", /* 63 */ | |
3452 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
3453 | 0 | |
3454 | }; | |
3455 | ||
3456 | #endif /* DGUX */ | |
3457 | \f | |
3458 | /* Directory routines for systems that don't have them. */ | |
3459 | ||
3460 | #ifdef SYSV_SYSTEM_DIR | |
3461 | ||
3462 | #include <dirent.h> | |
3463 | ||
1db6401c | 3464 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
cfdc57af | 3465 | |
86a5659e JB |
3466 | int |
3467 | closedir (dirp) | |
3468 | register DIR *dirp; /* stream from opendir */ | |
3469 | { | |
cfdc57af RS |
3470 | int rtnval; |
3471 | ||
3472 | rtnval = sys_close (dirp->dd_fd); | |
1b929d25 | 3473 | |
65aa44ac JB |
3474 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3475 | in one block. Why in the world are we freeing this ourselves | |
3476 | anyway? */ | |
3477 | #if ! (defined (sun) && defined (USG5_4)) | |
3478 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3479 | #endif | |
9ac0d9e0 | 3480 | xfree ((char *) dirp); |
cfdc57af RS |
3481 | |
3482 | return rtnval; | |
86a5659e | 3483 | } |
1db6401c | 3484 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3485 | #endif /* SYSV_SYSTEM_DIR */ |
3486 | ||
3487 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3488 | ||
3489 | DIR * | |
3490 | opendir (filename) | |
3491 | char *filename; /* name of directory */ | |
3492 | { | |
3493 | register DIR *dirp; /* -> malloc'ed storage */ | |
3494 | register int fd; /* file descriptor for read */ | |
3495 | struct stat sbuf; /* result of fstat */ | |
3496 | ||
3497 | fd = sys_open (filename, 0); | |
3498 | if (fd < 0) | |
3499 | return 0; | |
3500 | ||
9ac0d9e0 | 3501 | BLOCK_INPUT; |
86a5659e JB |
3502 | if (fstat (fd, &sbuf) < 0 |
3503 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3504 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3505 | { | |
3506 | sys_close (fd); | |
9ac0d9e0 | 3507 | UNBLOCK_INPUT; |
86a5659e JB |
3508 | return 0; /* bad luck today */ |
3509 | } | |
9ac0d9e0 | 3510 | UNBLOCK_INPUT; |
86a5659e JB |
3511 | |
3512 | dirp->dd_fd = fd; | |
3513 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3514 | ||
3515 | return dirp; | |
3516 | } | |
3517 | ||
3518 | void | |
3519 | closedir (dirp) | |
3520 | register DIR *dirp; /* stream from opendir */ | |
3521 | { | |
3522 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 3523 | xfree ((char *) dirp); |
86a5659e JB |
3524 | } |
3525 | ||
3526 | ||
3527 | #ifndef VMS | |
3528 | #define DIRSIZ 14 | |
3529 | struct olddir | |
3530 | { | |
3531 | ino_t od_ino; /* inode */ | |
3532 | char od_name[DIRSIZ]; /* filename */ | |
3533 | }; | |
3534 | #endif /* not VMS */ | |
3535 | ||
3536 | struct direct dir_static; /* simulated directory contents */ | |
3537 | ||
3538 | /* ARGUSED */ | |
3539 | struct direct * | |
3540 | readdir (dirp) | |
3541 | register DIR *dirp; /* stream from opendir */ | |
3542 | { | |
3543 | #ifndef VMS | |
3544 | register struct olddir *dp; /* -> directory data */ | |
3545 | #else /* VMS */ | |
3546 | register struct dir$_name *dp; /* -> directory data */ | |
3547 | register struct dir$_version *dv; /* -> version data */ | |
3548 | #endif /* VMS */ | |
3549 | ||
3550 | for (; ;) | |
3551 | { | |
3552 | if (dirp->dd_loc >= dirp->dd_size) | |
3553 | dirp->dd_loc = dirp->dd_size = 0; | |
3554 | ||
3555 | if (dirp->dd_size == 0 /* refill buffer */ | |
3556 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3557 | return 0; | |
3558 | ||
3559 | #ifndef VMS | |
3560 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3561 | dirp->dd_loc += sizeof (struct olddir); | |
3562 | ||
3563 | if (dp->od_ino != 0) /* not deleted entry */ | |
3564 | { | |
3565 | dir_static.d_ino = dp->od_ino; | |
3566 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3567 | dir_static.d_name[DIRSIZ] = '\0'; | |
3568 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3569 | dir_static.d_reclen = sizeof (struct direct) | |
3570 | - MAXNAMLEN + 3 | |
3571 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3572 | return &dir_static; /* -> simulated structure */ | |
3573 | } | |
3574 | #else /* VMS */ | |
3575 | dp = (struct dir$_name *) dirp->dd_buf; | |
3576 | if (dirp->dd_loc == 0) | |
3577 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3578 | : dp->dir$b_namecount; | |
3579 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3580 | dir_static.d_ino = dv->dir$w_fid_num; | |
3581 | dir_static.d_namlen = dp->dir$b_namecount; | |
3582 | dir_static.d_reclen = sizeof (struct direct) | |
3583 | - MAXNAMLEN + 3 | |
3584 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3585 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3586 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3587 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3588 | return &dir_static; | |
3589 | #endif /* VMS */ | |
3590 | } | |
3591 | } | |
3592 | ||
3593 | #ifdef VMS | |
3594 | /* readdirver is just like readdir except it returns all versions of a file | |
3595 | as separate entries. */ | |
3596 | ||
3597 | /* ARGUSED */ | |
3598 | struct direct * | |
3599 | readdirver (dirp) | |
3600 | register DIR *dirp; /* stream from opendir */ | |
3601 | { | |
3602 | register struct dir$_name *dp; /* -> directory data */ | |
3603 | register struct dir$_version *dv; /* -> version data */ | |
3604 | ||
3605 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3606 | dirp->dd_loc = dirp->dd_size = 0; | |
3607 | ||
3608 | if (dirp->dd_size == 0 /* refill buffer */ | |
3609 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3610 | return 0; | |
3611 | ||
3612 | dp = (struct dir$_name *) dirp->dd_buf; | |
3613 | if (dirp->dd_loc == 0) | |
3614 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3615 | : dp->dir$b_namecount; | |
3616 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3617 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3618 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3619 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3620 | dir_static.d_ino = dv->dir$w_fid_num; | |
3621 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3622 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3623 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3624 | return &dir_static; | |
3625 | } | |
3626 | ||
3627 | #endif /* VMS */ | |
3628 | ||
3629 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3630 | |
3631 | \f | |
53ea491a | 3632 | int |
061ea326 | 3633 | set_file_times (filename, atime, mtime) |
8334eb21 | 3634 | char *filename; |
53ea491a KH |
3635 | EMACS_TIME atime, mtime; |
3636 | { | |
3637 | #ifdef HAVE_UTIMES | |
3638 | struct timeval tv[2]; | |
3639 | tv[0] = atime; | |
3640 | tv[1] = mtime; | |
8334eb21 RS |
3641 | return utimes (filename, tv); |
3642 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3643 | struct utimbuf utb; |
3644 | utb.actime = EMACS_SECS (atime); | |
3645 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3646 | return utime (filename, &utb); |
3647 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3648 | } |
3649 | \f | |
23524fb9 JB |
3650 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3651 | ||
3652 | #ifndef HAVE_MKDIR | |
3653 | /* | |
3654 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3655 | * | |
3656 | * If you want it, it's yours. All I ask in return is that if you | |
3657 | * figure out how to do this in a Bourne Shell script you send me | |
3658 | * a copy. | |
3659 | * sdcsvax!rmr or rmr@uscd | |
3660 | * | |
3661 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3662 | * subroutine. 11Mar86; hoptoad!gnu | |
3663 | * | |
3664 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3665 | * subroutine didn't return EEXIST. It does now. | |
3666 | */ | |
3667 | ||
3668 | /* | |
3669 | * Make a directory. | |
3670 | */ | |
f3892946 RS |
3671 | #ifdef MKDIR_PROTOTYPE |
3672 | MKDIR_PROTOTYPE | |
3673 | #else | |
23524fb9 JB |
3674 | int |
3675 | mkdir (dpath, dmode) | |
3676 | char *dpath; | |
3677 | int dmode; | |
f3892946 | 3678 | #endif |
23524fb9 | 3679 | { |
039f26a4 | 3680 | int cpid, status, fd; |
23524fb9 JB |
3681 | struct stat statbuf; |
3682 | ||
3683 | if (stat (dpath, &statbuf) == 0) | |
3684 | { | |
3685 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3686 | return -1; | |
3687 | } | |
3688 | ||
3689 | /* If stat fails for a reason other than non-existence, return error */ | |
3690 | if (errno != ENOENT) | |
3691 | return -1; | |
3692 | ||
039f26a4 | 3693 | synch_process_alive = 1; |
23524fb9 JB |
3694 | switch (cpid = fork ()) |
3695 | { | |
3696 | ||
039f26a4 | 3697 | case -1: /* Error in fork */ |
23524fb9 JB |
3698 | return (-1); /* Errno is set already */ |
3699 | ||
3700 | case 0: /* Child process */ | |
3701 | /* | |
3702 | * Cheap hack to set mode of new directory. Since this | |
3703 | * child process is going away anyway, we zap its umask. | |
3704 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3705 | * directory. Does anybody care? | |
3706 | */ | |
3707 | status = umask (0); /* Get current umask */ | |
3708 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3709 | fd = sys_open("/dev/null", 2); |
3710 | if (fd >= 0) | |
3711 | { | |
3712 | dup2 (fd, 0); | |
3713 | dup2 (fd, 1); | |
3714 | dup2 (fd, 2); | |
3715 | } | |
23524fb9 JB |
3716 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3717 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3718 | ||
3719 | default: /* Parent process */ | |
039f26a4 | 3720 | wait_for_termination (cpid); |
23524fb9 JB |
3721 | } |
3722 | ||
039f26a4 | 3723 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3724 | { |
3725 | errno = EIO; /* We don't know why, but */ | |
3726 | return -1; /* /bin/mkdir failed */ | |
3727 | } | |
3728 | ||
3729 | return 0; | |
3730 | } | |
3731 | #endif /* not HAVE_MKDIR */ | |
3732 | ||
3733 | #ifndef HAVE_RMDIR | |
3734 | int | |
3735 | rmdir (dpath) | |
3736 | char *dpath; | |
3737 | { | |
039f26a4 | 3738 | int cpid, status, fd; |
23524fb9 JB |
3739 | struct stat statbuf; |
3740 | ||
3741 | if (stat (dpath, &statbuf) != 0) | |
3742 | { | |
3743 | /* Stat just set errno. We don't have to */ | |
3744 | return -1; | |
3745 | } | |
3746 | ||
039f26a4 | 3747 | synch_process_alive = 1; |
23524fb9 JB |
3748 | switch (cpid = fork ()) |
3749 | { | |
3750 | ||
039f26a4 | 3751 | case -1: /* Error in fork */ |
23524fb9 JB |
3752 | return (-1); /* Errno is set already */ |
3753 | ||
3754 | case 0: /* Child process */ | |
039f26a4 RS |
3755 | fd = sys_open("/dev/null", 2); |
3756 | if (fd >= 0) | |
3757 | { | |
3758 | dup2 (fd, 0); | |
3759 | dup2 (fd, 1); | |
3760 | dup2 (fd, 2); | |
3761 | } | |
f560db78 RS |
3762 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3763 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3764 | ||
207bdbdb | 3765 | default: /* Parent process */ |
f560db78 | 3766 | wait_for_termination (cpid); |
23524fb9 JB |
3767 | } |
3768 | ||
f560db78 | 3769 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3770 | { |
3771 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3772 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3773 | } |
3774 | ||
3775 | return 0; | |
3776 | } | |
3777 | #endif /* !HAVE_RMDIR */ | |
3778 | ||
3779 | ||
86a5659e JB |
3780 | \f |
3781 | /* Functions for VMS */ | |
3782 | #ifdef VMS | |
91bac16a | 3783 | #include "vms-pwd.h" |
86a5659e JB |
3784 | #include <acldef.h> |
3785 | #include <chpdef.h> | |
3786 | #include <jpidef.h> | |
3787 | ||
3788 | /* Return as a string the VMS error string pertaining to STATUS. | |
3789 | Reuses the same static buffer each time it is called. */ | |
3790 | ||
3791 | char * | |
3792 | vmserrstr (status) | |
3793 | int status; /* VMS status code */ | |
3794 | { | |
3795 | int bufadr[2]; | |
3796 | short len; | |
3797 | static char buf[257]; | |
3798 | ||
3799 | bufadr[0] = sizeof buf - 1; | |
3800 | bufadr[1] = (int) buf; | |
3801 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3802 | return "untranslatable VMS error status"; | |
3803 | buf[len] = '\0'; | |
3804 | return buf; | |
3805 | } | |
3806 | ||
3807 | #ifdef access | |
3808 | #undef access | |
3809 | ||
3810 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3811 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3812 | */ | |
3813 | ||
3814 | #ifdef VMS4_4 | |
3815 | ||
3816 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3817 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3818 | ||
3819 | typedef union { | |
3820 | struct { | |
3821 | unsigned short s_buflen; | |
3822 | unsigned short s_code; | |
3823 | char *s_bufadr; | |
3824 | unsigned short *s_retlenadr; | |
3825 | } s; | |
3826 | int end; | |
3827 | } item; | |
3828 | #define buflen s.s_buflen | |
3829 | #define code s.s_code | |
3830 | #define bufadr s.s_bufadr | |
3831 | #define retlenadr s.s_retlenadr | |
3832 | ||
3833 | #define R_OK 4 /* test for read permission */ | |
3834 | #define W_OK 2 /* test for write permission */ | |
3835 | #define X_OK 1 /* test for execute (search) permission */ | |
3836 | #define F_OK 0 /* test for presence of file */ | |
3837 | ||
3838 | int | |
3839 | sys_access (path, mode) | |
3840 | char *path; | |
3841 | int mode; | |
3842 | { | |
3843 | static char *user = NULL; | |
3844 | char dir_fn[512]; | |
3845 | ||
3846 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3847 | * access can treat the directory like a file. */ | |
3848 | if (directory_file_name (path, dir_fn)) | |
3849 | path = dir_fn; | |
3850 | ||
3851 | if (mode == F_OK) | |
3852 | return access (path, mode); | |
3853 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3854 | return -1; | |
3855 | { | |
3856 | int stat; | |
3857 | int flags; | |
3858 | int acces; | |
3859 | unsigned short int dummy; | |
3860 | item itemlst[3]; | |
3861 | static int constant = ACL$C_FILE; | |
3862 | DESCRIPTOR (path_desc, path); | |
3863 | DESCRIPTOR (user_desc, user); | |
3864 | ||
3865 | flags = 0; | |
3866 | acces = 0; | |
3867 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3868 | return stat; | |
3869 | if (mode & R_OK) | |
3870 | acces |= CHP$M_READ; | |
3871 | if (mode & W_OK) | |
3872 | acces |= CHP$M_WRITE; | |
3873 | itemlst[0].buflen = sizeof (int); | |
3874 | itemlst[0].code = CHP$_FLAGS; | |
3875 | itemlst[0].bufadr = (char *) &flags; | |
3876 | itemlst[0].retlenadr = &dummy; | |
3877 | itemlst[1].buflen = sizeof (int); | |
3878 | itemlst[1].code = CHP$_ACCESS; | |
3879 | itemlst[1].bufadr = (char *) &acces; | |
3880 | itemlst[1].retlenadr = &dummy; | |
3881 | itemlst[2].end = CHP$_END; | |
3882 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3883 | return stat == SS$_NORMAL ? 0 : -1; | |
3884 | } | |
3885 | } | |
3886 | ||
3887 | #else /* not VMS4_4 */ | |
3888 | ||
3889 | #include <prvdef.h> | |
fe03522b RS |
3890 | #define ACE$M_WRITE 2 |
3891 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3892 | |
3893 | static unsigned short memid, grpid; | |
3894 | static unsigned int uic; | |
3895 | ||
3896 | /* Called from init_sys_modes, so it happens not very often | |
3897 | but at least each time Emacs is loaded. */ | |
dfcf069d | 3898 | void |
86a5659e JB |
3899 | sys_access_reinit () |
3900 | { | |
3901 | uic = 0; | |
3902 | } | |
3903 | ||
3904 | int | |
3905 | sys_access (filename, type) | |
3906 | char * filename; | |
3907 | int type; | |
3908 | { | |
3909 | struct FAB fab; | |
3910 | struct XABPRO xab; | |
3911 | int status, size, i, typecode, acl_controlled; | |
3912 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3913 | union prvdef prvmask; | |
3914 | ||
3915 | /* Get UIC and GRP values for protection checking. */ | |
3916 | if (uic == 0) | |
3917 | { | |
3918 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3919 | if (! (status & 1)) | |
3920 | return -1; | |
3921 | memid = uic & 0xFFFF; | |
3922 | grpid = uic >> 16; | |
3923 | } | |
3924 | ||
fe03522b | 3925 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3926 | return access (filename, type); |
3927 | ||
3928 | /* Check write protection. */ | |
3929 | ||
fe03522b | 3930 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 3931 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
3932 | |
3933 | /* Find privilege bits */ | |
986ffb24 | 3934 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3935 | if (! (status & 1)) |
3936 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3937 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3938 | return 0; /* BYPASS enabled */ | |
3939 | fab = cc$rms_fab; | |
3940 | fab.fab$b_fac = FAB$M_GET; | |
3941 | fab.fab$l_fna = filename; | |
3942 | fab.fab$b_fns = strlen (filename); | |
3943 | fab.fab$l_xab = &xab; | |
3944 | xab = cc$rms_xabpro; | |
3945 | xab.xab$l_aclbuf = aclbuf; | |
3946 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3947 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3948 | if (! (status & 1)) |
3949 | return -1; | |
986ffb24 | 3950 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 3951 | /* Check system access */ |
ea5a0917 | 3952 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
3953 | return 0; |
3954 | /* Check ACL entries, if any */ | |
3955 | acl_controlled = 0; | |
3956 | if (xab.xab$w_acllen > 0) | |
3957 | { | |
3958 | aclptr = aclbuf; | |
3959 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3960 | while (*aclptr && aclptr < aclend) | |
3961 | { | |
3962 | size = (*aclptr & 0xff) / 4; | |
3963 | typecode = (*aclptr >> 8) & 0xff; | |
3964 | if (typecode == ACE$C_KEYID) | |
3965 | for (i = size - 1; i > 1; i--) | |
3966 | if (aclptr[i] == uic) | |
3967 | { | |
3968 | acl_controlled = 1; | |
3969 | if (aclptr[1] & ACE$M_WRITE) | |
3970 | return 0; /* Write access through ACL */ | |
3971 | } | |
3972 | aclptr = &aclptr[size]; | |
3973 | } | |
3974 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3975 | return -1; | |
3976 | } | |
3977 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 3978 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 3979 | return 0; |
ea5a0917 | 3980 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 3981 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
3982 | return 0; /* Group writable */ |
3983 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 3984 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 3985 | return 0; /* Owner writable */ |
86a5659e | 3986 | |
ea5a0917 | 3987 | return -1; /* Not writable */ |
86a5659e JB |
3988 | } |
3989 | #endif /* not VMS4_4 */ | |
3990 | #endif /* access */ | |
3991 | ||
3992 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3993 | ||
3994 | /* translate a vms file spec to a unix path */ | |
3995 | char * | |
3996 | sys_translate_vms (vfile) | |
3997 | char * vfile; | |
3998 | { | |
3999 | char * p; | |
4000 | char * targ; | |
4001 | ||
4002 | if (!vfile) | |
4003 | return 0; | |
4004 | ||
4005 | targ = vtbuf; | |
4006 | ||
4007 | /* leading device or logical name is a root directory */ | |
4008 | if (p = strchr (vfile, ':')) | |
4009 | { | |
4010 | *targ++ = '/'; | |
4011 | while (vfile < p) | |
4012 | *targ++ = *vfile++; | |
4013 | vfile++; | |
4014 | *targ++ = '/'; | |
4015 | } | |
4016 | p = vfile; | |
4017 | if (*p == '[' || *p == '<') | |
4018 | { | |
4019 | while (*++vfile != *p + 2) | |
4020 | switch (*vfile) | |
4021 | { | |
4022 | case '.': | |
4023 | if (vfile[-1] == *p) | |
4024 | *targ++ = '.'; | |
4025 | *targ++ = '/'; | |
4026 | break; | |
4027 | ||
4028 | case '-': | |
4029 | *targ++ = '.'; | |
4030 | *targ++ = '.'; | |
4031 | break; | |
4032 | ||
4033 | default: | |
4034 | *targ++ = *vfile; | |
4035 | break; | |
4036 | } | |
4037 | vfile++; | |
4038 | *targ++ = '/'; | |
4039 | } | |
4040 | while (*vfile) | |
4041 | *targ++ = *vfile++; | |
4042 | ||
4043 | return vtbuf; | |
4044 | } | |
4045 | ||
4046 | static char utbuf[NAM$C_MAXRSS+1]; | |
4047 | ||
4048 | /* translate a unix path to a VMS file spec */ | |
4049 | char * | |
4050 | sys_translate_unix (ufile) | |
4051 | char * ufile; | |
4052 | { | |
4053 | int slash_seen = 0; | |
4054 | char *p; | |
4055 | char * targ; | |
4056 | ||
4057 | if (!ufile) | |
4058 | return 0; | |
4059 | ||
4060 | targ = utbuf; | |
4061 | ||
4062 | if (*ufile == '/') | |
4063 | { | |
4064 | ufile++; | |
4065 | } | |
4066 | ||
4067 | while (*ufile) | |
4068 | { | |
4069 | switch (*ufile) | |
4070 | { | |
4071 | case '/': | |
4072 | if (slash_seen) | |
4073 | if (index (&ufile[1], '/')) | |
4074 | *targ++ = '.'; | |
4075 | else | |
4076 | *targ++ = ']'; | |
4077 | else | |
4078 | { | |
4079 | *targ++ = ':'; | |
4080 | if (index (&ufile[1], '/')) | |
4081 | *targ++ = '['; | |
4082 | slash_seen = 1; | |
4083 | } | |
4084 | break; | |
4085 | ||
4086 | case '.': | |
4087 | if (strncmp (ufile, "./", 2) == 0) | |
4088 | { | |
4089 | if (!slash_seen) | |
4090 | { | |
4091 | *targ++ = '['; | |
4092 | slash_seen = 1; | |
4093 | } | |
4094 | ufile++; /* skip the dot */ | |
4095 | if (index (&ufile[1], '/')) | |
4096 | *targ++ = '.'; | |
4097 | else | |
4098 | *targ++ = ']'; | |
4099 | } | |
4100 | else if (strncmp (ufile, "../", 3) == 0) | |
4101 | { | |
4102 | if (!slash_seen) | |
4103 | { | |
4104 | *targ++ = '['; | |
4105 | slash_seen = 1; | |
4106 | } | |
4107 | *targ++ = '-'; | |
4108 | ufile += 2; /* skip the dots */ | |
4109 | if (index (&ufile[1], '/')) | |
4110 | *targ++ = '.'; | |
4111 | else | |
4112 | *targ++ = ']'; | |
4113 | } | |
4114 | else | |
4115 | *targ++ = *ufile; | |
4116 | break; | |
4117 | ||
4118 | default: | |
4119 | *targ++ = *ufile; | |
4120 | break; | |
4121 | } | |
4122 | ufile++; | |
4123 | } | |
4124 | *targ = '\0'; | |
4125 | ||
4126 | return utbuf; | |
4127 | } | |
4128 | ||
4129 | char * | |
4130 | getwd (pathname) | |
4131 | char *pathname; | |
4132 | { | |
f4a7e5bd | 4133 | char *ptr, *val; |
210b2b4f | 4134 | extern char *getcwd (); |
86a5659e | 4135 | |
210b2b4f JB |
4136 | #define MAXPATHLEN 1024 |
4137 | ||
9ac0d9e0 | 4138 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4139 | val = getcwd (ptr, MAXPATHLEN); |
4140 | if (val == 0) | |
4141 | { | |
4142 | xfree (ptr); | |
4143 | return val; | |
4144 | } | |
210b2b4f | 4145 | strcpy (pathname, ptr); |
9ac0d9e0 | 4146 | xfree (ptr); |
210b2b4f JB |
4147 | |
4148 | return pathname; | |
86a5659e JB |
4149 | } |
4150 | ||
dfcf069d | 4151 | int |
86a5659e JB |
4152 | getppid () |
4153 | { | |
4154 | long item_code = JPI$_OWNER; | |
4155 | unsigned long parent_id; | |
4156 | int status; | |
4157 | ||
4158 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4159 | { | |
4160 | errno = EVMSERR; | |
4161 | vaxc$errno = status; | |
4162 | return -1; | |
4163 | } | |
4164 | return parent_id; | |
4165 | } | |
4166 | ||
4167 | #undef getuid | |
4168 | unsigned | |
4169 | sys_getuid () | |
4170 | { | |
4171 | return (getgid () << 16) | getuid (); | |
4172 | } | |
4173 | ||
4174 | int | |
4175 | sys_read (fildes, buf, nbyte) | |
4176 | int fildes; | |
4177 | char *buf; | |
4178 | unsigned int nbyte; | |
4179 | { | |
4180 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4181 | } | |
4182 | ||
4183 | #if 0 | |
4184 | int | |
4185 | sys_write (fildes, buf, nbyte) | |
4186 | int fildes; | |
4187 | char *buf; | |
4188 | unsigned int nbyte; | |
4189 | { | |
4190 | register int nwrote, rtnval = 0; | |
4191 | ||
4192 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4193 | nbyte -= nwrote; | |
4194 | buf += nwrote; | |
4195 | rtnval += nwrote; | |
4196 | } | |
4197 | if (nwrote < 0) | |
4198 | return rtnval ? rtnval : -1; | |
4199 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4200 | return rtnval ? rtnval : -1; | |
4201 | return (rtnval + nwrote); | |
4202 | } | |
4203 | #endif /* 0 */ | |
4204 | ||
4205 | /* | |
4206 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4207 | * end with a newline (carriage return) character, and if they | |
4208 | * don't it adds one (nice of it isn't it!) | |
4209 | * | |
4210 | * Thus we do this stupidity below. | |
4211 | */ | |
4212 | ||
4213 | int | |
4214 | sys_write (fildes, buf, nbytes) | |
4215 | int fildes; | |
4216 | char *buf; | |
4217 | unsigned int nbytes; | |
4218 | { | |
4219 | register char *p; | |
4220 | register char *e; | |
23b0668c JB |
4221 | int sum = 0; |
4222 | struct stat st; | |
4223 | ||
4224 | fstat (fildes, &st); | |
86a5659e | 4225 | p = buf; |
86a5659e JB |
4226 | while (nbytes > 0) |
4227 | { | |
23b0668c JB |
4228 | int len, retval; |
4229 | ||
4230 | /* Handle fixed-length files with carriage control. */ | |
4231 | if (st.st_fab_rfm == FAB$C_FIX | |
4232 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4233 | { | |
4234 | len = st.st_fab_mrs; | |
4235 | retval = write (fildes, p, min (len, nbytes)); | |
4236 | if (retval != len) | |
4237 | return -1; | |
4238 | retval++; /* This skips the implied carriage control */ | |
4239 | } | |
4240 | else | |
4241 | { | |
4242 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4243 | while (*e != '\n' && e > p) e--; | |
4244 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4245 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4246 | len = e + 1 - p; | |
4247 | retval = write (fildes, p, len); | |
4248 | if (retval != len) | |
4249 | return -1; | |
4250 | } | |
4251 | p += retval; | |
4252 | sum += retval; | |
86a5659e JB |
4253 | nbytes -= retval; |
4254 | } | |
4255 | return sum; | |
4256 | } | |
4257 | ||
4258 | /* Create file NEW copying its attributes from file OLD. If | |
4259 | OLD is 0 or does not exist, create based on the value of | |
4260 | vms_stmlf_recfm. */ | |
4261 | ||
4262 | /* Protection value the file should ultimately have. | |
4263 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4264 | static unsigned short int fab_final_pro; | |
4265 | ||
4266 | int | |
4267 | creat_copy_attrs (old, new) | |
4268 | char *old, *new; | |
4269 | { | |
4270 | struct FAB fab = cc$rms_fab; | |
4271 | struct XABPRO xabpro; | |
4272 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4273 | extern int vms_stmlf_recfm; | |
4274 | ||
4275 | if (old) | |
4276 | { | |
4277 | fab.fab$b_fac = FAB$M_GET; | |
4278 | fab.fab$l_fna = old; | |
4279 | fab.fab$b_fns = strlen (old); | |
4280 | fab.fab$l_xab = (char *) &xabpro; | |
4281 | xabpro = cc$rms_xabpro; | |
4282 | xabpro.xab$l_aclbuf = aclbuf; | |
4283 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4284 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4285 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4286 | { |
986ffb24 | 4287 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4288 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4289 | if (xabpro.xab$w_acllen > 0) | |
4290 | { | |
4291 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4292 | /* If the acl buffer was too short, redo open with longer one. | |
4293 | Wouldn't need to do this if there were some system imposed | |
4294 | limit on the size of an ACL, but I can't find any such. */ | |
4295 | { | |
4296 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4297 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4298 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4299 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4300 | else |
4301 | old = 0; | |
4302 | } | |
4303 | } | |
4304 | else | |
4305 | xabpro.xab$l_aclbuf = 0; | |
4306 | } | |
4307 | else | |
4308 | old = 0; | |
4309 | } | |
4310 | fab.fab$l_fna = new; | |
4311 | fab.fab$b_fns = strlen (new); | |
4312 | if (!old) | |
4313 | { | |
4314 | fab.fab$l_xab = 0; | |
4315 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4316 | fab.fab$b_rat = FAB$M_CR; | |
4317 | } | |
4318 | ||
4319 | /* Set the file protections such that we will be able to manipulate | |
4320 | this file. Once we are done writing and renaming it, we will set | |
4321 | the protections back. */ | |
4322 | if (old) | |
4323 | fab_final_pro = xabpro.xab$w_pro; | |
4324 | else | |
986ffb24 | 4325 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4326 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4327 | ||
4328 | /* Create the new file with either default attrs or attrs copied | |
4329 | from old file. */ | |
4330 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4331 | return -1; | |
986ffb24 | 4332 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4333 | /* As this is a "replacement" for creat, return a file descriptor |
4334 | opened for writing. */ | |
4335 | return open (new, O_WRONLY); | |
4336 | } | |
4337 | ||
4338 | #ifdef creat | |
4339 | #undef creat | |
4340 | #include <varargs.h> | |
4341 | #ifdef __GNUC__ | |
4342 | #ifndef va_count | |
4343 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4344 | #endif | |
4345 | #endif | |
4346 | ||
dfcf069d | 4347 | int |
86a5659e JB |
4348 | sys_creat (va_alist) |
4349 | va_dcl | |
4350 | { | |
eb8c3be9 | 4351 | va_list list_incrementer; |
86a5659e JB |
4352 | char *name; |
4353 | int mode; | |
4354 | int rfd; /* related file descriptor */ | |
4355 | int fd; /* Our new file descriptor */ | |
4356 | int count; | |
4357 | struct stat st_buf; | |
4358 | char rfm[12]; | |
4359 | char rat[15]; | |
4360 | char mrs[13]; | |
4361 | char fsz[13]; | |
4362 | extern int vms_stmlf_recfm; | |
4363 | ||
4364 | va_count (count); | |
eb8c3be9 JB |
4365 | va_start (list_incrementer); |
4366 | name = va_arg (list_incrementer, char *); | |
4367 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4368 | if (count > 2) |
eb8c3be9 JB |
4369 | rfd = va_arg (list_incrementer, int); |
4370 | va_end (list_incrementer); | |
86a5659e JB |
4371 | if (count > 2) |
4372 | { | |
4373 | /* Use information from the related file descriptor to set record | |
4374 | format of the newly created file. */ | |
4375 | fstat (rfd, &st_buf); | |
4376 | switch (st_buf.st_fab_rfm) | |
4377 | { | |
4378 | case FAB$C_FIX: | |
4379 | strcpy (rfm, "rfm = fix"); | |
4380 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4381 | strcpy (rat, "rat = "); | |
4382 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4383 | strcat (rat, "cr"); | |
4384 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4385 | strcat (rat, "ftn"); | |
4386 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4387 | strcat (rat, "prn"); | |
4388 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4389 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4390 | strcat (rat, ", blk"); | |
4391 | else | |
4392 | strcat (rat, "blk"); | |
4393 | return creat (name, 0, rfm, rat, mrs); | |
4394 | ||
4395 | case FAB$C_VFC: | |
4396 | strcpy (rfm, "rfm = vfc"); | |
4397 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4398 | strcpy (rat, "rat = "); | |
4399 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4400 | strcat (rat, "cr"); | |
4401 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4402 | strcat (rat, "ftn"); | |
4403 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4404 | strcat (rat, "prn"); | |
4405 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4406 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4407 | strcat (rat, ", blk"); | |
4408 | else | |
4409 | strcat (rat, "blk"); | |
4410 | return creat (name, 0, rfm, rat, fsz); | |
4411 | ||
4412 | case FAB$C_STM: | |
4413 | strcpy (rfm, "rfm = stm"); | |
4414 | break; | |
4415 | ||
4416 | case FAB$C_STMCR: | |
4417 | strcpy (rfm, "rfm = stmcr"); | |
4418 | break; | |
4419 | ||
4420 | case FAB$C_STMLF: | |
4421 | strcpy (rfm, "rfm = stmlf"); | |
4422 | break; | |
4423 | ||
4424 | case FAB$C_UDF: | |
4425 | strcpy (rfm, "rfm = udf"); | |
4426 | break; | |
4427 | ||
4428 | case FAB$C_VAR: | |
4429 | strcpy (rfm, "rfm = var"); | |
4430 | break; | |
4431 | } | |
4432 | strcpy (rat, "rat = "); | |
4433 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4434 | strcat (rat, "cr"); | |
4435 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4436 | strcat (rat, "ftn"); | |
4437 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4438 | strcat (rat, "prn"); | |
4439 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4440 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4441 | strcat (rat, ", blk"); | |
4442 | else | |
4443 | strcat (rat, "blk"); | |
4444 | } | |
4445 | else | |
4446 | { | |
4447 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4448 | strcpy (rat, "rat=cr"); | |
4449 | } | |
4450 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4451 | mode 0 to get the user's default protection. */ | |
4452 | fd = creat (name, 0, rfm, rat); | |
4453 | if (fd < 0 && errno == EEXIST) | |
4454 | { | |
4455 | if (unlink (name) < 0) | |
4456 | report_file_error ("delete", build_string (name)); | |
4457 | fd = creat (name, 0, rfm, rat); | |
4458 | } | |
4459 | return fd; | |
4460 | } | |
4461 | #endif /* creat */ | |
4462 | ||
4463 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
dfcf069d | 4464 | int |
86a5659e JB |
4465 | sys_fwrite (ptr, size, num, fp) |
4466 | register char * ptr; | |
4467 | FILE * fp; | |
4468 | { | |
4469 | register int tot = num * size; | |
4470 | ||
4471 | while (tot--) | |
4472 | fputc (*ptr++, fp); | |
dfcf069d | 4473 | return num; |
86a5659e JB |
4474 | } |
4475 | ||
4476 | /* | |
4477 | * The VMS C library routine creat actually creates a new version of an | |
4478 | * existing file rather than truncating the old version. There are times | |
4479 | * when this is not the desired behavior, for instance, when writing an | |
4480 | * auto save file (you only want one version), or when you don't have | |
4481 | * write permission in the directory containing the file (but the file | |
4482 | * itself is writable). Hence this routine, which is equivalent to | |
4483 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4484 | */ | |
4485 | int | |
4486 | vms_truncate (fn) | |
4487 | char *fn; | |
4488 | { | |
4489 | struct FAB xfab = cc$rms_fab; | |
4490 | struct RAB xrab = cc$rms_rab; | |
4491 | int status; | |
4492 | ||
4493 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4494 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4495 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4496 | xfab.fab$l_fna = fn; | |
4497 | xfab.fab$b_fns = strlen (fn); | |
4498 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4499 | xfab.fab$b_dns = 2; | |
4500 | xrab.rab$l_fab = &xfab; | |
4501 | ||
4502 | /* This gibberish opens the file, positions to the first record, and | |
4503 | deletes all records from there until the end of file. */ | |
986ffb24 | 4504 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4505 | { |
986ffb24 JB |
4506 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4507 | (SYS$FIND (&xrab) & 01) == 01 && | |
4508 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4509 | status = 0; |
4510 | else | |
4511 | status = -1; | |
4512 | } | |
4513 | else | |
4514 | status = -1; | |
986ffb24 | 4515 | SYS$CLOSE (&xfab); |
86a5659e JB |
4516 | return status; |
4517 | } | |
4518 | ||
4519 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4520 | SYSPRV or a readable SYSUAF.DAT. */ | |
4521 | ||
4522 | #ifdef READ_SYSUAF | |
4523 | /* | |
4524 | * getuaf.c | |
4525 | * | |
4526 | * Routine to read the VMS User Authorization File and return | |
4527 | * a specific user's record. | |
4528 | */ | |
4529 | ||
4530 | static struct UAF retuaf; | |
4531 | ||
4532 | struct UAF * | |
4533 | get_uaf_name (uname) | |
4534 | char * uname; | |
4535 | { | |
4536 | register status; | |
4537 | struct FAB uaf_fab; | |
4538 | struct RAB uaf_rab; | |
4539 | ||
4540 | uaf_fab = cc$rms_fab; | |
4541 | uaf_rab = cc$rms_rab; | |
4542 | /* initialize fab fields */ | |
4543 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4544 | uaf_fab.fab$b_fns = 21; | |
4545 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4546 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4547 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4548 | /* initialize rab fields */ | |
4549 | uaf_rab.rab$l_fab = &uaf_fab; | |
4550 | /* open the User Authorization File */ | |
986ffb24 | 4551 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4552 | if (!(status&1)) |
4553 | { | |
4554 | errno = EVMSERR; | |
4555 | vaxc$errno = status; | |
4556 | return 0; | |
4557 | } | |
986ffb24 | 4558 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4559 | if (!(status&1)) |
4560 | { | |
4561 | errno = EVMSERR; | |
4562 | vaxc$errno = status; | |
4563 | return 0; | |
4564 | } | |
4565 | /* read the requested record - index is in uname */ | |
4566 | uaf_rab.rab$l_kbf = uname; | |
4567 | uaf_rab.rab$b_ksz = strlen (uname); | |
4568 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4569 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4570 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4571 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4572 | if (!(status&1)) |
4573 | { | |
4574 | errno = EVMSERR; | |
4575 | vaxc$errno = status; | |
4576 | return 0; | |
4577 | } | |
4578 | /* close the User Authorization File */ | |
986ffb24 | 4579 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4580 | if (!(status&1)) |
4581 | { | |
4582 | errno = EVMSERR; | |
4583 | vaxc$errno = status; | |
4584 | return 0; | |
4585 | } | |
986ffb24 | 4586 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4587 | if (!(status&1)) |
4588 | { | |
4589 | errno = EVMSERR; | |
4590 | vaxc$errno = status; | |
4591 | return 0; | |
4592 | } | |
4593 | return &retuaf; | |
4594 | } | |
4595 | ||
4596 | struct UAF * | |
4597 | get_uaf_uic (uic) | |
4598 | unsigned long uic; | |
4599 | { | |
4600 | register status; | |
4601 | struct FAB uaf_fab; | |
4602 | struct RAB uaf_rab; | |
4603 | ||
4604 | uaf_fab = cc$rms_fab; | |
4605 | uaf_rab = cc$rms_rab; | |
4606 | /* initialize fab fields */ | |
4607 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4608 | uaf_fab.fab$b_fns = 21; | |
4609 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4610 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4611 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4612 | /* initialize rab fields */ | |
4613 | uaf_rab.rab$l_fab = &uaf_fab; | |
4614 | /* open the User Authorization File */ | |
986ffb24 | 4615 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4616 | if (!(status&1)) |
4617 | { | |
4618 | errno = EVMSERR; | |
4619 | vaxc$errno = status; | |
4620 | return 0; | |
4621 | } | |
986ffb24 | 4622 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4623 | if (!(status&1)) |
4624 | { | |
4625 | errno = EVMSERR; | |
4626 | vaxc$errno = status; | |
4627 | return 0; | |
4628 | } | |
4629 | /* read the requested record - index is in uic */ | |
4630 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4631 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4632 | uaf_rab.rab$b_ksz = sizeof uic; | |
4633 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4634 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4635 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4636 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4637 | if (!(status&1)) |
4638 | { | |
4639 | errno = EVMSERR; | |
4640 | vaxc$errno = status; | |
4641 | return 0; | |
4642 | } | |
4643 | /* close the User Authorization File */ | |
986ffb24 | 4644 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4645 | if (!(status&1)) |
4646 | { | |
4647 | errno = EVMSERR; | |
4648 | vaxc$errno = status; | |
4649 | return 0; | |
4650 | } | |
986ffb24 | 4651 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4652 | if (!(status&1)) |
4653 | { | |
4654 | errno = EVMSERR; | |
4655 | vaxc$errno = status; | |
4656 | return 0; | |
4657 | } | |
4658 | return &retuaf; | |
4659 | } | |
4660 | ||
4661 | static struct passwd retpw; | |
4662 | ||
4663 | struct passwd * | |
4664 | cnv_uaf_pw (up) | |
4665 | struct UAF * up; | |
4666 | { | |
4667 | char * ptr; | |
4668 | ||
4669 | /* copy these out first because if the username is 32 chars, the next | |
4670 | section will overwrite the first byte of the UIC */ | |
4671 | retpw.pw_uid = up->uaf$w_mem; | |
4672 | retpw.pw_gid = up->uaf$w_grp; | |
4673 | ||
ea5a0917 | 4674 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4675 | byte beyond the end of the field, but what the heck... */ |
4676 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4677 | while (ptr[-1] == ' ') | |
4678 | ptr--; | |
4679 | *ptr = '\0'; | |
4680 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4681 | ||
4682 | /* the rest of these are counted ascii strings */ | |
4683 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4684 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4685 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4686 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4687 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4688 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4689 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4690 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4691 | ||
4692 | return &retpw; | |
4693 | } | |
4694 | #else /* not READ_SYSUAF */ | |
4695 | static struct passwd retpw; | |
4696 | #endif /* not READ_SYSUAF */ | |
4697 | ||
4698 | struct passwd * | |
4699 | getpwnam (name) | |
4700 | char * name; | |
4701 | { | |
4702 | #ifdef READ_SYSUAF | |
4703 | struct UAF *up; | |
4704 | #else | |
4705 | char * user; | |
4706 | char * dir; | |
4707 | unsigned char * full; | |
4708 | #endif /* READ_SYSUAF */ | |
4709 | char *ptr = name; | |
4710 | ||
4711 | while (*ptr) | |
4712 | { | |
4713 | if ('a' <= *ptr && *ptr <= 'z') | |
4714 | *ptr -= 040; | |
4715 | ptr++; | |
4716 | } | |
4717 | #ifdef READ_SYSUAF | |
4718 | if (!(up = get_uaf_name (name))) | |
4719 | return 0; | |
4720 | return cnv_uaf_pw (up); | |
4721 | #else | |
4722 | if (strcmp (name, getenv ("USER")) == 0) | |
4723 | { | |
4724 | retpw.pw_uid = getuid (); | |
4725 | retpw.pw_gid = getgid (); | |
4726 | strcpy (retpw.pw_name, name); | |
4727 | if (full = egetenv ("FULLNAME")) | |
4728 | strcpy (retpw.pw_gecos, full); | |
4729 | else | |
4730 | *retpw.pw_gecos = '\0'; | |
4731 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4732 | *retpw.pw_shell = '\0'; | |
4733 | return &retpw; | |
4734 | } | |
4735 | else | |
4736 | return 0; | |
4737 | #endif /* not READ_SYSUAF */ | |
4738 | } | |
4739 | ||
4740 | struct passwd * | |
4741 | getpwuid (uid) | |
4742 | unsigned long uid; | |
4743 | { | |
4744 | #ifdef READ_SYSUAF | |
4745 | struct UAF * up; | |
4746 | ||
4747 | if (!(up = get_uaf_uic (uid))) | |
4748 | return 0; | |
4749 | return cnv_uaf_pw (up); | |
4750 | #else | |
4751 | if (uid == sys_getuid ()) | |
4752 | return getpwnam (egetenv ("USER")); | |
4753 | else | |
4754 | return 0; | |
4755 | #endif /* not READ_SYSUAF */ | |
4756 | } | |
4757 | ||
4758 | /* return total address space available to the current process. This is | |
4759 | the sum of the current p0 size, p1 size and free page table entries | |
4760 | available. */ | |
dfcf069d | 4761 | int |
86a5659e JB |
4762 | vlimit () |
4763 | { | |
4764 | int item_code; | |
4765 | unsigned long free_pages; | |
4766 | unsigned long frep0va; | |
4767 | unsigned long frep1va; | |
4768 | register status; | |
4769 | ||
4770 | item_code = JPI$_FREPTECNT; | |
4771 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4772 | { | |
4773 | errno = EVMSERR; | |
4774 | vaxc$errno = status; | |
4775 | return -1; | |
4776 | } | |
4777 | free_pages *= 512; | |
4778 | ||
4779 | item_code = JPI$_FREP0VA; | |
4780 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4781 | { | |
4782 | errno = EVMSERR; | |
4783 | vaxc$errno = status; | |
4784 | return -1; | |
4785 | } | |
4786 | item_code = JPI$_FREP1VA; | |
4787 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4788 | { | |
4789 | errno = EVMSERR; | |
4790 | vaxc$errno = status; | |
4791 | return -1; | |
4792 | } | |
4793 | ||
4794 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4795 | } | |
4796 | ||
dfcf069d | 4797 | int |
86a5659e JB |
4798 | define_logical_name (varname, string) |
4799 | char *varname; | |
4800 | char *string; | |
4801 | { | |
4802 | struct dsc$descriptor_s strdsc = | |
4803 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4804 | struct dsc$descriptor_s envdsc = | |
4805 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4806 | struct dsc$descriptor_s lnmdsc = | |
4807 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4808 | ||
4809 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4810 | } | |
4811 | ||
dfcf069d | 4812 | int |
86a5659e JB |
4813 | delete_logical_name (varname) |
4814 | char *varname; | |
4815 | { | |
4816 | struct dsc$descriptor_s envdsc = | |
4817 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4818 | struct dsc$descriptor_s lnmdsc = | |
4819 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4820 | ||
4821 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4822 | } | |
4823 | ||
dfcf069d | 4824 | int |
86a5659e | 4825 | ulimit () |
dfcf069d AS |
4826 | { |
4827 | return 0; | |
4828 | } | |
86a5659e | 4829 | |
dfcf069d | 4830 | int |
86a5659e | 4831 | setpgrp () |
dfcf069d AS |
4832 | { |
4833 | return 0; | |
4834 | } | |
86a5659e | 4835 | |
dfcf069d | 4836 | int |
86a5659e JB |
4837 | execvp () |
4838 | { | |
4839 | error ("execvp system call not implemented"); | |
dfcf069d | 4840 | return -1; |
86a5659e JB |
4841 | } |
4842 | ||
4843 | int | |
4844 | rename (from, to) | |
4845 | char *from, *to; | |
4846 | { | |
4847 | int status; | |
4848 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4849 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4850 | char from_esn[NAM$C_MAXRSS]; | |
4851 | char to_esn[NAM$C_MAXRSS]; | |
4852 | ||
4853 | from_fab.fab$l_fna = from; | |
4854 | from_fab.fab$b_fns = strlen (from); | |
4855 | from_fab.fab$l_nam = &from_nam; | |
4856 | from_fab.fab$l_fop = FAB$M_NAM; | |
4857 | ||
4858 | from_nam.nam$l_esa = from_esn; | |
4859 | from_nam.nam$b_ess = sizeof from_esn; | |
4860 | ||
4861 | to_fab.fab$l_fna = to; | |
4862 | to_fab.fab$b_fns = strlen (to); | |
4863 | to_fab.fab$l_nam = &to_nam; | |
4864 | to_fab.fab$l_fop = FAB$M_NAM; | |
4865 | ||
4866 | to_nam.nam$l_esa = to_esn; | |
4867 | to_nam.nam$b_ess = sizeof to_esn; | |
4868 | ||
4869 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4870 | ||
4871 | if (status & 1) | |
4872 | return 0; | |
4873 | else | |
4874 | { | |
4875 | if (status == RMS$_DEV) | |
4876 | errno = EXDEV; | |
4877 | else | |
4878 | errno = EVMSERR; | |
4879 | vaxc$errno = status; | |
4880 | return -1; | |
4881 | } | |
4882 | } | |
4883 | ||
4884 | /* This function renames a file like `rename', but it strips | |
4885 | the version number from the "to" filename, such that the "to" file is | |
4886 | will always be a new version. It also sets the file protection once it is | |
4887 | finished. The protection that we will use is stored in fab_final_pro, | |
4888 | and was set when we did a creat_copy_attrs to create the file that we | |
4889 | are renaming. | |
4890 | ||
4891 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4892 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4893 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4894 | the W and D bits together. */ | |
4895 | ||
4896 | ||
4897 | static struct fibdef fib; /* We need this initialized to zero */ | |
4898 | char vms_file_written[NAM$C_MAXRSS]; | |
4899 | ||
4900 | int | |
4901 | rename_sans_version (from,to) | |
4902 | char *from, *to; | |
4903 | { | |
4904 | short int chan; | |
4905 | int stat; | |
4906 | short int iosb[4]; | |
4907 | int status; | |
4908 | struct FAB to_fab = cc$rms_fab; | |
4909 | struct NAM to_nam = cc$rms_nam; | |
4910 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4911 | struct dsc$descriptor fib_attr[2] | |
4912 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4913 | char to_esn[NAM$C_MAXRSS]; | |
4914 | ||
4915 | $DESCRIPTOR (disk,to_esn); | |
4916 | ||
4917 | to_fab.fab$l_fna = to; | |
4918 | to_fab.fab$b_fns = strlen (to); | |
4919 | to_fab.fab$l_nam = &to_nam; | |
4920 | to_fab.fab$l_fop = FAB$M_NAM; | |
4921 | ||
4922 | to_nam.nam$l_esa = to_esn; | |
4923 | to_nam.nam$b_ess = sizeof to_esn; | |
4924 | ||
4925 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4926 | ||
4927 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4928 | *(to_nam.nam$l_ver) = '\0'; | |
4929 | ||
4930 | stat = rename (from, to_esn); | |
4931 | if (stat < 0) | |
4932 | return stat; | |
4933 | ||
4934 | strcpy (vms_file_written, to_esn); | |
4935 | ||
4936 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4937 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4938 | ||
4939 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4940 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4941 | |
4942 | /* Copy these fields into the fib */ | |
4943 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4944 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4945 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4946 | ||
986ffb24 | 4947 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4948 | |
986ffb24 | 4949 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4950 | if (!stat) |
986ffb24 JB |
4951 | LIB$SIGNAL (stat); |
4952 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4953 | 0, 0, 0, &fib_attr, 0); |
4954 | if (!stat) | |
986ffb24 JB |
4955 | LIB$SIGNAL (stat); |
4956 | stat = SYS$DASSGN (chan); | |
86a5659e | 4957 | if (!stat) |
986ffb24 | 4958 | LIB$SIGNAL (stat); |
0137dbf7 | 4959 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4960 | return 0; |
4961 | } | |
4962 | ||
dfcf069d | 4963 | int |
86a5659e JB |
4964 | link (file, new) |
4965 | char * file, * new; | |
4966 | { | |
4967 | register status; | |
4968 | struct FAB fab; | |
4969 | struct NAM nam; | |
4970 | unsigned short fid[3]; | |
4971 | char esa[NAM$C_MAXRSS]; | |
4972 | ||
4973 | fab = cc$rms_fab; | |
4974 | fab.fab$l_fop = FAB$M_OFP; | |
4975 | fab.fab$l_fna = file; | |
4976 | fab.fab$b_fns = strlen (file); | |
4977 | fab.fab$l_nam = &nam; | |
4978 | ||
4979 | nam = cc$rms_nam; | |
4980 | nam.nam$l_esa = esa; | |
4981 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4982 | ||
4983 | status = SYS$PARSE (&fab); | |
4984 | if ((status & 1) == 0) | |
4985 | { | |
4986 | errno = EVMSERR; | |
4987 | vaxc$errno = status; | |
4988 | return -1; | |
4989 | } | |
4990 | status = SYS$SEARCH (&fab); | |
4991 | if ((status & 1) == 0) | |
4992 | { | |
4993 | errno = EVMSERR; | |
4994 | vaxc$errno = status; | |
4995 | return -1; | |
4996 | } | |
4997 | ||
4998 | fid[0] = nam.nam$w_fid[0]; | |
4999 | fid[1] = nam.nam$w_fid[1]; | |
5000 | fid[2] = nam.nam$w_fid[2]; | |
5001 | ||
5002 | fab.fab$l_fna = new; | |
5003 | fab.fab$b_fns = strlen (new); | |
5004 | ||
5005 | status = SYS$PARSE (&fab); | |
5006 | if ((status & 1) == 0) | |
5007 | { | |
5008 | errno = EVMSERR; | |
5009 | vaxc$errno = status; | |
5010 | return -1; | |
5011 | } | |
5012 | ||
5013 | nam.nam$w_fid[0] = fid[0]; | |
5014 | nam.nam$w_fid[1] = fid[1]; | |
5015 | nam.nam$w_fid[2] = fid[2]; | |
5016 | ||
5017 | nam.nam$l_esa = nam.nam$l_name; | |
5018 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
5019 | ||
5020 | status = SYS$ENTER (&fab); | |
5021 | if ((status & 1) == 0) | |
5022 | { | |
5023 | errno = EVMSERR; | |
5024 | vaxc$errno = status; | |
5025 | return -1; | |
5026 | } | |
5027 | ||
5028 | return 0; | |
5029 | } | |
5030 | ||
dfcf069d | 5031 | void |
86a5659e JB |
5032 | croak (badfunc) |
5033 | char *badfunc; | |
5034 | { | |
5035 | printf ("%s not yet implemented\r\n", badfunc); | |
5036 | reset_sys_modes (); | |
5037 | exit (1); | |
5038 | } | |
5039 | ||
5040 | long | |
5041 | random () | |
5042 | { | |
5043 | /* Arrange to return a range centered on zero. */ | |
5044 | return rand () - (1 << 30); | |
5045 | } | |
5046 | ||
dfcf069d | 5047 | void |
86a5659e JB |
5048 | srandom (seed) |
5049 | { | |
5050 | srand (seed); | |
5051 | } | |
5052 | #endif /* VMS */ | |
5053 | \f | |
b97ab886 | 5054 | #ifdef AIXHFT |
86a5659e JB |
5055 | |
5056 | /* Called from init_sys_modes. */ | |
dfcf069d | 5057 | void |
86a5659e JB |
5058 | hft_init () |
5059 | { | |
5060 | int junk; | |
5061 | ||
5062 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5063 | if we are on an HFT by trying to get an HFT error code. If this | |
5064 | call fails, we're not on an HFT. */ | |
5065 | #ifdef IBMR2AIX | |
5066 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5067 | return; | |
5068 | #else /* not IBMR2AIX */ | |
5069 | if (ioctl (0, HFQEIO, 0) < 0) | |
5070 | return; | |
5071 | #endif /* not IBMR2AIX */ | |
5072 | ||
5073 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5074 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5075 | there's no way to determine the old mapping, so in reset_sys_modes | |
5076 | we need to assume that the normal map had been present. Of course, this | |
5077 | code also doesn't help if on a terminal emulator which doesn't understand | |
5078 | HFT VTD's. */ | |
5079 | { | |
5080 | struct hfbuf buf; | |
5081 | struct hfkeymap keymap; | |
5082 | ||
5083 | buf.hf_bufp = (char *)&keymap; | |
5084 | buf.hf_buflen = sizeof (keymap); | |
5085 | keymap.hf_nkeys = 2; | |
5086 | keymap.hfkey[0].hf_kpos = 15; | |
5087 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5088 | #ifdef IBMR2AIX | |
5089 | keymap.hfkey[0].hf_keyidh = '<'; | |
5090 | #else /* not IBMR2AIX */ | |
5091 | keymap.hfkey[0].hf_page = '<'; | |
5092 | #endif /* not IBMR2AIX */ | |
5093 | keymap.hfkey[0].hf_char = 127; | |
5094 | keymap.hfkey[1].hf_kpos = 15; | |
5095 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5096 | #ifdef IBMR2AIX | |
5097 | keymap.hfkey[1].hf_keyidh = '<'; | |
5098 | #else /* not IBMR2AIX */ | |
5099 | keymap.hfkey[1].hf_page = '<'; | |
5100 | #endif /* not IBMR2AIX */ | |
5101 | keymap.hfkey[1].hf_char = 127; | |
5102 | hftctl (0, HFSKBD, &buf); | |
5103 | } | |
5104 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
5105 | at times. */ | |
5106 | line_ins_del_ok = char_ins_del_ok = 0; | |
5107 | } | |
5108 | ||
5109 | /* Reset the rubout key to backspace. */ | |
5110 | ||
dfcf069d | 5111 | void |
86a5659e JB |
5112 | hft_reset () |
5113 | { | |
5114 | struct hfbuf buf; | |
5115 | struct hfkeymap keymap; | |
5116 | int junk; | |
5117 | ||
5118 | #ifdef IBMR2AIX | |
5119 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5120 | return; | |
5121 | #else /* not IBMR2AIX */ | |
5122 | if (ioctl (0, HFQEIO, 0) < 0) | |
5123 | return; | |
5124 | #endif /* not IBMR2AIX */ | |
5125 | ||
5126 | buf.hf_bufp = (char *)&keymap; | |
5127 | buf.hf_buflen = sizeof (keymap); | |
5128 | keymap.hf_nkeys = 2; | |
5129 | keymap.hfkey[0].hf_kpos = 15; | |
5130 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5131 | #ifdef IBMR2AIX | |
5132 | keymap.hfkey[0].hf_keyidh = '<'; | |
5133 | #else /* not IBMR2AIX */ | |
5134 | keymap.hfkey[0].hf_page = '<'; | |
5135 | #endif /* not IBMR2AIX */ | |
5136 | keymap.hfkey[0].hf_char = 8; | |
5137 | keymap.hfkey[1].hf_kpos = 15; | |
5138 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5139 | #ifdef IBMR2AIX | |
5140 | keymap.hfkey[1].hf_keyidh = '<'; | |
5141 | #else /* not IBMR2AIX */ | |
5142 | keymap.hfkey[1].hf_page = '<'; | |
5143 | #endif /* not IBMR2AIX */ | |
5144 | keymap.hfkey[1].hf_char = 8; | |
5145 | hftctl (0, HFSKBD, &buf); | |
5146 | } | |
5147 | ||
b97ab886 | 5148 | #endif /* AIXHFT */ |
c238be24 RS |
5149 | |
5150 | #ifdef USE_DL_STUBS | |
5151 | ||
5152 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5153 | X11 libraries may refer to these functions but (we hope) do not | |
5154 | actually call them. */ | |
5155 | ||
5156 | void * | |
5157 | dlopen () | |
5158 | { | |
5159 | return 0; | |
5160 | } | |
5161 | ||
5162 | void * | |
5163 | dlsym () | |
5164 | { | |
5165 | return 0; | |
5166 | } | |
5167 | ||
5168 | int | |
5169 | dlclose () | |
5170 | { | |
5171 | return -1; | |
5172 | } | |
5173 | ||
5174 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5175 | \f |
5176 | #ifndef BSTRING | |
5177 | ||
5178 | #ifndef bzero | |
5179 | ||
5180 | void | |
5181 | bzero (b, length) | |
5182 | register char *b; | |
5183 | register int length; | |
5184 | { | |
5185 | #ifdef VMS | |
5186 | short zero = 0; | |
5187 | long max_str = 65535; | |
5188 | ||
5189 | while (length > max_str) { | |
5190 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5191 | length -= max_str; | |
5192 | b += max_str; | |
5193 | } | |
5194 | max_str = length; | |
5195 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5196 | #else | |
5197 | while (length-- > 0) | |
5198 | *b++ = 0; | |
5199 | #endif /* not VMS */ | |
5200 | } | |
5201 | ||
5202 | #endif /* no bzero */ | |
5203 | #endif /* BSTRING */ | |
5204 | ||
c7f93f28 | 5205 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5206 | #undef bcopy |
5207 | ||
5208 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5209 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5210 | bcopy (b1, b2, length) | |
5211 | register char *b1; | |
5212 | register char *b2; | |
5213 | register int length; | |
5214 | { | |
5215 | #ifdef VMS | |
5216 | long max_str = 65535; | |
5217 | ||
5218 | while (length > max_str) { | |
5219 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5220 | length -= max_str; | |
5221 | b1 += max_str; | |
5222 | b2 += max_str; | |
5223 | } | |
5224 | max_str = length; | |
5225 | (void) LIB$MOVC3 (&length, b1, b2); | |
5226 | #else | |
5227 | while (length-- > 0) | |
5228 | *b2++ = *b1++; | |
5229 | #endif /* not VMS */ | |
5230 | } | |
dfcf069d | 5231 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ |
51417996 | 5232 | |
c7f93f28 | 5233 | #ifndef BSTRING |
51417996 RS |
5234 | #ifndef bcmp |
5235 | int | |
5236 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5237 | register char *b1; | |
5238 | register char *b2; | |
5239 | register int length; | |
5240 | { | |
5241 | #ifdef VMS | |
5242 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5243 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5244 | ||
5245 | return STR$COMPARE (&src1, &src2); | |
5246 | #else | |
5247 | while (length-- > 0) | |
5248 | if (*b1++ != *b2++) | |
5249 | return 1; | |
5250 | ||
5251 | return 0; | |
5252 | #endif /* not VMS */ | |
5253 | } | |
5254 | #endif /* no bcmp */ | |
5255 | #endif /* not BSTRING */ |