Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
275464e7 | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
0b5538bd | 3 | 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
86a5659e JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
7088d1ca | 9 | the Free Software Foundation; either version 2, or (at your option) |
86a5659e JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
86a5659e | 21 | |
4838e624 PJ |
22 | #ifdef HAVE_CONFIG_H |
23 | #include <config.h> | |
24 | #endif | |
86a5659e JB |
25 | |
26 | #include <signal.h> | |
5890e9f7 | 27 | #include <stdio.h> |
86a5659e | 28 | #include <setjmp.h> |
d3eb3bfa DL |
29 | #ifdef HAVE_UNISTD_H |
30 | #include <unistd.h> | |
31 | #endif | |
86a5659e | 32 | #include "lisp.h" |
8296bbf8 DL |
33 | /* Including stdlib.h isn't necessarily enough to get srandom |
34 | declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */ | |
35 | #ifdef HAVE_RANDOM | |
1bfb1345 DL |
36 | #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets |
37 | random prototyped as returning `int'. It looks to me as | |
38 | though the best way to DTRT is to prefer the rand48 functions | |
39 | (per libc.info). -- fx */ | |
8296bbf8 | 40 | extern long int random P_ ((void)); |
1bfb1345 | 41 | #endif |
ff4c29f4 GM |
42 | #if 0 /* Don't prototype srandom; it takes an unsigned argument on |
43 | some systems, and an unsigned long on others, like FreeBSD | |
44 | 4.1. */ | |
8296bbf8 DL |
45 | extern void srandom P_ ((unsigned int)); |
46 | #endif | |
ff4c29f4 | 47 | #endif |
8296bbf8 | 48 | |
819b8f00 KL |
49 | #include "sysselect.h" |
50 | ||
9ac0d9e0 | 51 | #include "blockinput.h" |
86a5659e | 52 | |
e0f712ba | 53 | #ifdef MAC_OS8 |
e194b7b9 | 54 | #include <sys/param.h> |
1a578e9b | 55 | |
c4ea52a6 RS |
56 | #ifndef subprocesses |
57 | /* Nonzero means delete a process right away if it exits (process.c). */ | |
58 | static int delete_exited_processes; | |
59 | #endif | |
e0f712ba | 60 | #endif /* MAC_OS8 */ |
c4ea52a6 | 61 | |
fe03522b | 62 | #ifdef WINDOWSNT |
e15b6288 JR |
63 | #define read sys_read |
64 | #define write sys_write | |
fe03522b | 65 | #include <windows.h> |
e36ec798 AI |
66 | #ifndef NULL |
67 | #define NULL 0 | |
68 | #endif | |
fe03522b RS |
69 | #endif /* not WINDOWSNT */ |
70 | ||
986ffb24 JB |
71 | /* Does anyone other than VMS need this? */ |
72 | #ifndef fwrite | |
73 | #define sys_fwrite fwrite | |
74 | #else | |
75 | #undef fwrite | |
76 | #endif | |
77 | ||
86a5659e JB |
78 | #include <sys/types.h> |
79 | #include <sys/stat.h> | |
80 | #include <errno.h> | |
81 | ||
f95c3f91 | 82 | #ifdef HAVE_SETPGID |
2b7e8799 | 83 | #if !defined (USG) || defined (BSD_PGRPS) |
c8875a65 | 84 | #undef setpgrp |
f95c3f91 GM |
85 | #define setpgrp setpgid |
86 | #endif | |
2b7e8799 | 87 | #endif |
f95c3f91 | 88 | |
b05af5d3 PE |
89 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
90 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
91 | #include <sys/systeminfo.h> | |
92 | #endif | |
93 | ||
207bdbdb RS |
94 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
95 | #include <dos.h> | |
96 | #include "dosfns.h" | |
97 | #include "msdos.h" | |
98 | #include <sys/param.h> | |
15614e61 RS |
99 | |
100 | #if __DJGPP__ > 1 | |
101 | extern int etext; | |
102 | extern unsigned start __asm__ ("start"); | |
103 | #endif | |
207bdbdb RS |
104 | #endif |
105 | ||
e36ec798 | 106 | #ifndef USE_CRT_DLL |
9ee9af7a | 107 | #ifndef errno |
86a5659e | 108 | extern int errno; |
9ee9af7a | 109 | #endif |
e36ec798 | 110 | #endif |
86a5659e | 111 | |
bb4bc8e2 RM |
112 | #ifdef VMS |
113 | #include <rms.h> | |
114 | #include <ttdef.h> | |
115 | #include <tt2def.h> | |
116 | #include <iodef.h> | |
117 | #include <ssdef.h> | |
118 | #include <descrip.h> | |
119 | #include <fibdef.h> | |
120 | #include <atrdef.h> | |
121 | #include <ctype.h> | |
122 | #include <string.h> | |
123 | #ifdef __GNUC__ | |
124 | #include <sys/file.h> | |
125 | #else | |
126 | #include <file.h> | |
127 | #endif | |
128 | #undef F_SETFL | |
129 | #ifndef RAB$C_BID | |
130 | #include <rab.h> | |
131 | #endif | |
fe03522b | 132 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
133 | #endif /* VMS */ |
134 | ||
7ce1c4de RS |
135 | #ifndef VMS |
136 | #include <sys/file.h> | |
137 | #endif /* not VMS */ | |
138 | ||
612221ab | 139 | #ifdef HAVE_FCNTL_H |
bb4bc8e2 RM |
140 | #include <fcntl.h> |
141 | #endif | |
86a5659e | 142 | |
207bdbdb | 143 | #ifndef MSDOS |
86a5659e | 144 | #include <sys/ioctl.h> |
207bdbdb | 145 | #endif |
2a633456 | 146 | |
e04a4e0d | 147 | #include "systty.h" |
94c8642a | 148 | #include "syswait.h" |
86a5659e | 149 | |
86a5659e JB |
150 | #ifdef BROKEN_TIOCGWINSZ |
151 | #undef TIOCGWINSZ | |
8dca3179 | 152 | #undef TIOCSWINSZ |
86a5659e JB |
153 | #endif |
154 | ||
c4ea52a6 | 155 | #if defined (USG) || defined (DGUX) |
86a5659e | 156 | #include <sys/utsname.h> |
86a5659e JB |
157 | #ifndef MEMORY_IN_STRING_H |
158 | #include <memory.h> | |
159 | #endif | |
81444907 | 160 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
161 | #ifdef NEED_SIOCTL |
162 | #include <sys/sioctl.h> | |
163 | #endif | |
164 | #ifdef NEED_PTEM_H | |
165 | #include <sys/stream.h> | |
166 | #include <sys/ptem.h> | |
167 | #endif | |
81444907 | 168 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 169 | #endif /* USG or DGUX */ |
86a5659e | 170 | |
86a5659e JB |
171 | extern int quit_char; |
172 | ||
e36ec798 | 173 | #include "keyboard.h" |
0137dbf7 | 174 | #include "frame.h" |
86a5659e JB |
175 | #include "window.h" |
176 | #include "termhooks.h" | |
177 | #include "termchar.h" | |
178 | #include "termopts.h" | |
179 | #include "dispextern.h" | |
180 | #include "process.h" | |
0a125897 | 181 | #include "cm.h" /* for reset_sys_modes */ |
86a5659e | 182 | |
fe03522b RS |
183 | #ifdef WINDOWSNT |
184 | #include <direct.h> | |
185 | /* In process.h which conflicts with the local copy. */ | |
186 | #define _P_WAIT 0 | |
187 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
188 | int _CRTAPI1 _getpid (void); | |
b6682dd9 | 189 | extern char *getwd (char *); |
fe03522b RS |
190 | #endif |
191 | ||
86a5659e JB |
192 | #ifdef NONSYSTEM_DIR_LIBRARY |
193 | #include "ndir.h" | |
194 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
195 | ||
91bac16a JB |
196 | #include "syssignal.h" |
197 | #include "systime.h" | |
d79998bc KH |
198 | #ifdef HAVE_UTIME_H |
199 | #include <utime.h> | |
200 | #endif | |
201 | ||
202 | #ifndef HAVE_UTIMES | |
203 | #ifndef HAVE_STRUCT_UTIMBUF | |
204 | /* We want to use utime rather than utimes, but we couldn't find the | |
205 | structure declaration. We'll use the traditional one. */ | |
206 | struct utimbuf { | |
207 | long actime; | |
208 | long modtime; | |
209 | }; | |
210 | #endif | |
211 | #endif | |
86a5659e | 212 | |
a00d5589 RS |
213 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
214 | #ifndef LPASS8 | |
215 | #define LPASS8 0 | |
216 | #endif | |
217 | ||
218 | #ifdef BSD4_1 | |
219 | #define LNOFLSH 0100000 | |
220 | #endif | |
221 | ||
86a5659e JB |
222 | static int baud_convert[] = |
223 | #ifdef BAUD_CONVERT | |
224 | BAUD_CONVERT; | |
225 | #else | |
226 | { | |
227 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
228 | 1800, 2400, 4800, 9600, 19200, 38400 | |
229 | }; | |
230 | #endif | |
231 | ||
f0d21750 GM |
232 | #ifdef HAVE_SPEED_T |
233 | #include <termios.h> | |
f0d21750 | 234 | #else |
ba5971b3 | 235 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
ba5971b3 | 236 | #else |
8a2a6032 | 237 | #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX) |
515b04d0 | 238 | #include <termios.h> |
f2361c60 | 239 | #endif |
ba5971b3 | 240 | #endif |
f0d21750 | 241 | #endif |
86a5659e | 242 | |
5bdd7bdd GM |
243 | int emacs_ospeed; |
244 | ||
b9c4113e RS |
245 | void croak P_ ((char *)); |
246 | ||
6d0d20a1 | 247 | #ifdef AIXHFT |
28d7d09f KL |
248 | void hft_init P_ ((struct tty_display_info *)); |
249 | void hft_reset P_ ((struct tty_display_info *)); | |
6d0d20a1 | 250 | #endif |
b9c4113e | 251 | |
89723395 GM |
252 | /* Temporary used by `sigblock' when defined in terms of signprocmask. */ |
253 | ||
254 | SIGMASKTYPE sigprocmask_set; | |
255 | ||
f78f1a83 | 256 | |
3480d92b | 257 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) |
f78f1a83 | 258 | |
b6682dd9 | 259 | /* Return the current working directory. Returns NULL on errors. |
f78f1a83 EZ |
260 | Any other returned value must be freed with free. This is used |
261 | only when get_current_dir_name is not defined on the system. */ | |
262 | char* | |
263 | get_current_dir_name () | |
264 | { | |
265 | char *buf; | |
266 | char *pwd; | |
267 | struct stat dotstat, pwdstat; | |
268 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
269 | sometimes a nicer name, and using it may avoid a fatal error if a | |
270 | parent directory is searchable but not readable. */ | |
271 | if ((pwd = getenv ("PWD")) != 0 | |
272 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
273 | && stat (pwd, &pwdstat) == 0 | |
274 | && stat (".", &dotstat) == 0 | |
275 | && dotstat.st_ino == pwdstat.st_ino | |
276 | && dotstat.st_dev == pwdstat.st_dev | |
277 | #ifdef MAXPATHLEN | |
278 | && strlen (pwd) < MAXPATHLEN | |
279 | #endif | |
280 | ) | |
281 | { | |
282 | buf = (char *) malloc (strlen (pwd) + 1); | |
283 | if (!buf) | |
284 | return NULL; | |
285 | strcpy (buf, pwd); | |
286 | } | |
287 | #ifdef HAVE_GETCWD | |
288 | else | |
289 | { | |
290 | size_t buf_size = 1024; | |
b6682dd9 | 291 | buf = (char *) malloc (buf_size); |
f78f1a83 EZ |
292 | if (!buf) |
293 | return NULL; | |
294 | for (;;) | |
295 | { | |
296 | if (getcwd (buf, buf_size) == buf) | |
297 | break; | |
298 | if (errno != ERANGE) | |
299 | { | |
300 | int tmp_errno = errno; | |
301 | free (buf); | |
302 | errno = tmp_errno; | |
303 | return NULL; | |
304 | } | |
305 | buf_size *= 2; | |
306 | buf = (char *) realloc (buf, buf_size); | |
307 | if (!buf) | |
308 | return NULL; | |
309 | } | |
310 | } | |
311 | #else | |
312 | else | |
313 | { | |
314 | /* We need MAXPATHLEN here. */ | |
315 | buf = (char *) malloc (MAXPATHLEN + 1); | |
316 | if (!buf) | |
317 | return NULL; | |
318 | if (getwd (buf) == NULL) | |
319 | { | |
320 | int tmp_errno = errno; | |
321 | free (buf); | |
322 | errno = tmp_errno; | |
323 | return NULL; | |
324 | } | |
325 | } | |
326 | #endif | |
327 | return buf; | |
328 | } | |
329 | #endif | |
330 | ||
64e971c3 | 331 | \f |
9628b887 | 332 | /* Discard pending input on all input descriptors. */ |
91bac16a | 333 | |
08633194 | 334 | void |
86a5659e JB |
335 | discard_tty_input () |
336 | { | |
fe03522b | 337 | #ifndef WINDOWSNT |
91bac16a | 338 | struct emacs_tty buf; |
86a5659e JB |
339 | |
340 | if (noninteractive) | |
341 | return; | |
342 | ||
86a5659e JB |
343 | #ifdef VMS |
344 | end_kbd_input (); | |
0b0d3e0b | 345 | SYS$QIOW (0, fileno (CURTTY()->input), IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
91bac16a | 346 | &buf.main, 0, 0, terminator_mask, 0, 0); |
86a5659e JB |
347 | queue_kbd_input (); |
348 | #else /* not VMS */ | |
349 | #ifdef APOLLO | |
350 | { | |
28d7d09f | 351 | struct tty_display_info *tty; |
6548cf00 KL |
352 | for (tty = tty_list; tty; tty = tty->next) |
353 | { | |
354 | int zero = 0; | |
0b0d3e0b KL |
355 | if (tty->input) |
356 | ioctl (fileno (tty->input), TIOCFLUSH, &zero); | |
6548cf00 | 357 | } |
86a5659e JB |
358 | } |
359 | #else /* not Apollo */ | |
fe03522b | 360 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 361 | while (dos_keyread () != -1) |
fe03522b | 362 | ; |
207bdbdb | 363 | #else /* not MSDOS */ |
9628b887 | 364 | { |
28d7d09f | 365 | struct tty_display_info *tty; |
9628b887 KL |
366 | for (tty = tty_list; tty; tty = tty->next) |
367 | { | |
0b0d3e0b KL |
368 | if (tty->input) /* Is the device suspended? */ |
369 | { | |
370 | EMACS_GET_TTY (fileno (tty->input), &buf); | |
371 | EMACS_SET_TTY (fileno (tty->input), &buf, 0); | |
372 | } | |
9628b887 KL |
373 | } |
374 | } | |
207bdbdb | 375 | #endif /* not MSDOS */ |
86a5659e JB |
376 | #endif /* not Apollo */ |
377 | #endif /* not VMS */ | |
fe03522b | 378 | #endif /* not WINDOWSNT */ |
86a5659e JB |
379 | } |
380 | ||
16c290d8 | 381 | \f |
86a5659e JB |
382 | #ifdef SIGTSTP |
383 | ||
64e971c3 | 384 | /* Arrange for character C to be read as the next input from |
16c290d8 KL |
385 | the terminal. |
386 | XXX What if we have multiple ttys? | |
387 | */ | |
64e971c3 | 388 | |
dfcf069d | 389 | void |
0c2338d8 | 390 | stuff_char (char c) |
86a5659e | 391 | { |
428a555e | 392 | if (! FRAME_TERMCAP_P (SELECTED_FRAME ())) |
23dab951 RS |
393 | return; |
394 | ||
86a5659e JB |
395 | /* Should perhaps error if in batch mode */ |
396 | #ifdef TIOCSTI | |
0b0d3e0b | 397 | ioctl (fileno (CURTTY()->input), TIOCSTI, &c); |
86a5659e | 398 | #else /* no TIOCSTI */ |
71f06467 | 399 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
400 | #endif /* no TIOCSTI */ |
401 | } | |
402 | ||
403 | #endif /* SIGTSTP */ | |
64e971c3 | 404 | \f |
08633194 | 405 | void |
16c290d8 | 406 | init_baud_rate (int fd) |
86a5659e | 407 | { |
86a5659e | 408 | if (noninteractive) |
5bdd7bdd | 409 | emacs_ospeed = 0; |
86a5659e JB |
410 | else |
411 | { | |
dfc366c9 RS |
412 | #ifdef INIT_BAUD_RATE |
413 | INIT_BAUD_RATE (); | |
414 | #else | |
fe03522b | 415 | #ifdef DOS_NT |
5bdd7bdd | 416 | emacs_ospeed = 15; |
fe03522b | 417 | #else /* not DOS_NT */ |
86a5659e | 418 | #ifdef VMS |
91bac16a JB |
419 | struct sensemode sg; |
420 | ||
16c290d8 | 421 | SYS$QIOW (0, fd, IO$_SENSEMODE, &sg, 0, 0, |
86a5659e | 422 | &sg.class, 12, 0, 0, 0, 0 ); |
5bdd7bdd | 423 | emacs_ospeed = sg.xmit_baud; |
91bac16a | 424 | #else /* not VMS */ |
e04a4e0d JB |
425 | #ifdef HAVE_TERMIOS |
426 | struct termios sg; | |
91bac16a | 427 | |
71f06467 | 428 | sg.c_cflag = B9600; |
16c290d8 | 429 | tcgetattr (fd, &sg); |
5bdd7bdd | 430 | emacs_ospeed = cfgetospeed (&sg); |
5baff9ce | 431 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b | 432 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
5bdd7bdd GM |
433 | if (emacs_ospeed == 0) |
434 | emacs_ospeed = getobaud (sg.c_cflag); | |
2f43149b | 435 | #endif |
e04a4e0d JB |
436 | #else /* neither VMS nor TERMIOS */ |
437 | #ifdef HAVE_TERMIO | |
438 | struct termio sg; | |
91bac16a | 439 | |
71f06467 | 440 | sg.c_cflag = B9600; |
e04a4e0d | 441 | #ifdef HAVE_TCATTR |
16c290d8 | 442 | tcgetattr (fd, &sg); |
e04a4e0d | 443 | #else |
16c290d8 | 444 | ioctl (fd, TCGETA, &sg); |
e04a4e0d | 445 | #endif |
5bdd7bdd | 446 | emacs_ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 447 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a | 448 | struct sgttyb sg; |
177c0ea7 | 449 | |
91bac16a | 450 | sg.sg_ospeed = B9600; |
16c290d8 | 451 | if (ioctl (fd, TIOCGETP, &sg) < 0) |
d7272cff | 452 | abort (); |
5bdd7bdd | 453 | emacs_ospeed = sg.sg_ospeed; |
91bac16a | 454 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 455 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 456 | #endif /* not VMS */ |
fe03522b | 457 | #endif /* not DOS_NT */ |
dfc366c9 | 458 | #endif /* not INIT_BAUD_RATE */ |
86a5659e | 459 | } |
177c0ea7 | 460 | |
5bdd7bdd GM |
461 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
462 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
463 | if (baud_rate == 0) |
464 | baud_rate = 1200; | |
465 | } | |
466 | ||
16c290d8 | 467 | \f |
86a5659e | 468 | /*ARGSUSED*/ |
dfcf069d | 469 | void |
86a5659e JB |
470 | set_exclusive_use (fd) |
471 | int fd; | |
472 | { | |
473 | #ifdef FIOCLEX | |
474 | ioctl (fd, FIOCLEX, 0); | |
475 | #endif | |
476 | /* Ok to do nothing if this feature does not exist */ | |
477 | } | |
64e971c3 | 478 | \f |
86a5659e JB |
479 | #ifndef subprocesses |
480 | ||
481 | wait_without_blocking () | |
482 | { | |
2a633456 | 483 | #ifdef BSD_SYSTEM |
86a5659e JB |
484 | wait3 (0, WNOHANG | WUNTRACED, 0); |
485 | #else | |
486 | croak ("wait_without_blocking"); | |
487 | #endif | |
488 | synch_process_alive = 0; | |
489 | } | |
490 | ||
491 | #endif /* not subprocesses */ | |
492 | ||
493 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 494 | (at least for bsd). */ |
86a5659e JB |
495 | |
496 | SIGTYPE | |
497 | wait_for_termination_signal () | |
498 | {} | |
499 | ||
500 | /* Wait for subprocess with process id `pid' to terminate and | |
501 | make sure it will get eliminated (not remain forever as a zombie) */ | |
502 | ||
08633194 | 503 | void |
86a5659e JB |
504 | wait_for_termination (pid) |
505 | int pid; | |
506 | { | |
507 | while (1) | |
508 | { | |
509 | #ifdef subprocesses | |
510 | #ifdef VMS | |
511 | int status; | |
512 | ||
986ffb24 | 513 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
514 | break; |
515 | #else /* not VMS */ | |
2a633456 | 516 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
517 | /* Note that kill returns -1 even if the process is just a zombie now. |
518 | But inevitably a SIGCHLD interrupt should be generated | |
519 | and child_sig will do wait3 and make the process go away. */ | |
520 | /* There is some indication that there is a bug involved with | |
521 | termination of subprocesses, perhaps involving a kernel bug too, | |
522 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
523 | if that causes the problem to go away or get worse. */ | |
524 | sigsetmask (sigmask (SIGCHLD)); | |
525 | if (0 > kill (pid, 0)) | |
fe03522b | 526 | { |
4c8975ad RS |
527 | sigsetmask (SIGEMPTYMASK); |
528 | kill (getpid (), SIGCHLD); | |
529 | break; | |
530 | } | |
531 | if (wait_debugging) | |
532 | sleep (1); | |
533 | else | |
534 | sigpause (SIGEMPTYMASK); | |
2a633456 | 535 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 536 | #if defined (UNIPLUS) |
4c8975ad RS |
537 | if (0 > kill (pid, 0)) |
538 | break; | |
539 | wait (0); | |
2a633456 | 540 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
8a2a6032 | 541 | #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */ |
9ab714c7 | 542 | sigblock (sigmask (SIGCHLD)); |
59957f85 GM |
543 | errno = 0; |
544 | if (kill (pid, 0) == -1 && errno == ESRCH) | |
9ab714c7 RS |
545 | { |
546 | sigunblock (sigmask (SIGCHLD)); | |
547 | break; | |
548 | } | |
ac3ac859 | 549 | |
0fdcb867 | 550 | sigsuspend (&empty_mask); |
9ab714c7 | 551 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
552 | #ifdef HAVE_SYSV_SIGPAUSE |
553 | sighold (SIGCHLD); | |
554 | if (0 > kill (pid, 0)) | |
555 | { | |
556 | sigrelse (SIGCHLD); | |
557 | break; | |
558 | } | |
559 | sigpause (SIGCHLD); | |
560 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
561 | #ifdef WINDOWSNT |
562 | wait (0); | |
563 | break; | |
564 | #else /* not WINDOWSNT */ | |
4c8975ad | 565 | if (0 > kill (pid, 0)) |
86a5659e | 566 | break; |
4c8975ad RS |
567 | /* Using sleep instead of pause avoids timing error. |
568 | If the inferior dies just before the sleep, | |
569 | we lose just one second. */ | |
570 | sleep (1); | |
fe03522b | 571 | #endif /* not WINDOWSNT */ |
4c8975ad | 572 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 573 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 574 | #endif /* not UNIPLUS */ |
2a633456 | 575 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
576 | #endif /* not VMS */ |
577 | #else /* not subprocesses */ | |
15614e61 RS |
578 | #if __DJGPP__ > 1 |
579 | break; | |
580 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
581 | #ifndef BSD4_1 |
582 | if (kill (pid, 0) < 0) | |
583 | break; | |
584 | wait (0); | |
585 | #else /* BSD4_1 */ | |
586 | int status; | |
587 | status = wait (0); | |
588 | if (status == pid || status == -1) | |
589 | break; | |
590 | #endif /* BSD4_1 */ | |
15614e61 | 591 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
592 | #endif /* not subprocesses */ |
593 | } | |
594 | } | |
595 | ||
596 | #ifdef subprocesses | |
597 | ||
598 | /* | |
599 | * flush any pending output | |
600 | * (may flush input as well; it does not matter the way we use it) | |
601 | */ | |
177c0ea7 | 602 | |
08633194 | 603 | void |
86a5659e JB |
604 | flush_pending_output (channel) |
605 | int channel; | |
606 | { | |
607 | #ifdef HAVE_TERMIOS | |
608 | /* If we try this, we get hit with SIGTTIN, because | |
609 | the child's tty belongs to the child's pgrp. */ | |
610 | #else | |
611 | #ifdef TCFLSH | |
612 | ioctl (channel, TCFLSH, 1); | |
613 | #else | |
614 | #ifdef TIOCFLUSH | |
615 | int zero = 0; | |
616 | /* 3rd arg should be ignored | |
617 | but some 4.2 kernels actually want the address of an int | |
618 | and nonzero means something different. */ | |
619 | ioctl (channel, TIOCFLUSH, &zero); | |
620 | #endif | |
621 | #endif | |
622 | #endif | |
623 | } | |
64e971c3 | 624 | \f |
86a5659e JB |
625 | #ifndef VMS |
626 | /* Set up the terminal at the other end of a pseudo-terminal that | |
627 | we will be controlling an inferior through. | |
628 | It should not echo or do line-editing, since that is done | |
629 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
630 | ||
08633194 | 631 | void |
86a5659e JB |
632 | child_setup_tty (out) |
633 | int out; | |
634 | { | |
fe03522b | 635 | #ifndef DOS_NT |
91bac16a JB |
636 | struct emacs_tty s; |
637 | ||
638 | EMACS_GET_TTY (out, &s); | |
86a5659e | 639 | |
31be8d24 | 640 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
641 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
642 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 643 | #ifdef NLDLY |
91bac16a JB |
644 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
645 | /* No output delays */ | |
9d4e5eea | 646 | #endif |
91bac16a JB |
647 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
648 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
2ea99a1e | 649 | #if 0 /* This causes bugs in (for instance) telnet to certain sites. */ |
402c9a51 GM |
650 | s.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ |
651 | #ifdef INLCR /* Just being cautious, since I can't check how | |
652 | widespread INLCR is--rms. */ | |
653 | s.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
654 | #endif | |
5a04bfa9 | 655 | #endif |
9d4e5eea RS |
656 | #ifdef IUCLC |
657 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
658 | #endif | |
f7097b2a RS |
659 | #ifdef ISTRIP |
660 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
661 | #endif | |
23e4c8be | 662 | #ifdef OLCUC |
9d4e5eea RS |
663 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
664 | #endif | |
f7097b2a | 665 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 666 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 667 | #if 0 |
eb8c3be9 | 668 | /* Said to be unnecessary: */ |
91bac16a JB |
669 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
670 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
671 | #endif | |
672 | ||
673 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
674 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
675 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
676 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 677 | |
86a5659e | 678 | #ifdef HPUX |
91bac16a | 679 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 680 | #endif /* HPUX */ |
91bac16a | 681 | |
dfe598b5 RS |
682 | #ifdef SIGNALS_VIA_CHARACTERS |
683 | /* the QUIT and INTR character are used in process_send_signal | |
684 | so set them here to something useful. */ | |
fa51fa32 | 685 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 686 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 687 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
688 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
689 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
690 | ||
86a5659e JB |
691 | #ifdef AIX |
692 | /* AIX enhanced edit loses NULs, so disable it */ | |
693 | #ifndef IBMR2AIX | |
91bac16a JB |
694 | s.main.c_line = 0; |
695 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
696 | #endif |
697 | /* Also, PTY overloads NUL and BREAK. | |
698 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
699 | s.main.c_iflag &= ~IGNBRK; |
700 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
701 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
702 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
703 | would force it to 0377. That looks like duplicated code. */ | |
704 | #ifndef SIGNALS_VIA_CHARACTERS | |
e6cc3307 | 705 | /* QUIT and INTR work better as signals, so disable character forms */ |
fa51fa32 KS |
706 | s.main.c_cc[VQUIT] = CDISABLE; |
707 | s.main.c_cc[VINTR] = CDISABLE; | |
91bac16a | 708 | s.main.c_lflag &= ~ISIG; |
e6cc3307 | 709 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
fa51fa32 | 710 | s.main.c_cc[VEOL] = CDISABLE; |
91bac16a | 711 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
712 | #endif /* AIX */ |
713 | ||
714 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
715 | |
716 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
717 | | CBREAK | TANDEM); | |
a00d5589 | 718 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
719 | s.main.sg_erase = 0377; |
720 | s.main.sg_kill = 0377; | |
1bf96fb5 | 721 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 722 | |
86a5659e JB |
723 | #endif /* not HAVE_TERMIO */ |
724 | ||
91bac16a | 725 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
726 | |
727 | #ifdef BSD4_1 | |
728 | if (interrupt_input) | |
0a125897 | 729 | reset_sigio (0); |
86a5659e JB |
730 | #endif /* BSD4_1 */ |
731 | #ifdef RTU | |
732 | { | |
733 | int zero = 0; | |
734 | ioctl (out, FIOASYNC, &zero); | |
735 | } | |
736 | #endif /* RTU */ | |
fe03522b | 737 | #endif /* not DOS_NT */ |
86a5659e JB |
738 | } |
739 | #endif /* not VMS */ | |
740 | ||
741 | #endif /* subprocesses */ | |
64e971c3 | 742 | \f |
86a5659e JB |
743 | /* Record a signal code and the handler for it. */ |
744 | struct save_signal | |
745 | { | |
746 | int code; | |
35a05cca | 747 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
748 | }; |
749 | ||
35a05cca AS |
750 | static void save_signal_handlers P_ ((struct save_signal *)); |
751 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
752 | ||
86a5659e JB |
753 | /* Suspend the Emacs process; give terminal to its superior. */ |
754 | ||
08633194 | 755 | void |
86a5659e JB |
756 | sys_suspend () |
757 | { | |
758 | #ifdef VMS | |
88191e36 RS |
759 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
760 | to the current emacs as a cheaper than starting a whole new process. This | |
761 | is set up by KEPTEDITOR.COM. */ | |
762 | unsigned long parent_id, foster_parent_id; | |
763 | char *fpid_string; | |
764 | ||
765 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
766 | if (fpid_string != NULL) | |
767 | { | |
768 | sscanf (fpid_string, "%x", &foster_parent_id); | |
769 | if (foster_parent_id != 0) | |
770 | parent_id = foster_parent_id; | |
771 | else | |
772 | parent_id = getppid (); | |
773 | } | |
774 | else | |
775 | parent_id = getppid (); | |
776 | ||
9ac0d9e0 | 777 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 778 | |
86a5659e JB |
779 | if (parent_id && parent_id != 0xffffffff) |
780 | { | |
781 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
782 | int status = LIB$ATTACH (&parent_id) & 1; | |
783 | signal (SIGINT, oldsig); | |
784 | return status; | |
785 | } | |
786 | else | |
787 | { | |
788 | struct { | |
789 | int l; | |
790 | char *a; | |
791 | } d_prompt; | |
792 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
793 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 794 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
795 | return 1; |
796 | } | |
797 | return -1; | |
798 | #else | |
c4ea52a6 | 799 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 800 | |
5a570e37 | 801 | { |
e89a2cd5 | 802 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
803 | EMACS_KILLPG (pgrp, SIGTSTP); |
804 | } | |
86a5659e JB |
805 | |
806 | #else /* No SIGTSTP */ | |
807 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
808 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
809 | kill (getpid (), SIGQUIT); | |
810 | ||
811 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
812 | ||
813 | /* On a system where suspending is not implemented, | |
814 | instead fork a subshell and let it talk directly to the terminal | |
815 | while we wait. */ | |
a0932daa KH |
816 | sys_subshell (); |
817 | ||
818 | #endif /* no USG_JOBCTRL */ | |
819 | #endif /* no SIGTSTP */ | |
820 | #endif /* not VMS */ | |
821 | } | |
822 | ||
823 | /* Fork a subshell. */ | |
824 | ||
e0f712ba | 825 | #ifndef MAC_OS8 |
08633194 | 826 | void |
a0932daa KH |
827 | sys_subshell () |
828 | { | |
829 | #ifndef VMS | |
ad00c243 | 830 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
831 | int st; |
832 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
833 | #endif | |
efa04277 | 834 | int pid; |
86a5659e | 835 | struct save_signal saved_handlers[5]; |
efa04277 RS |
836 | Lisp_Object dir; |
837 | unsigned char *str = 0; | |
838 | int len; | |
86a5659e JB |
839 | |
840 | saved_handlers[0].code = SIGINT; | |
841 | saved_handlers[1].code = SIGQUIT; | |
842 | saved_handlers[2].code = SIGTERM; | |
843 | #ifdef SIGIO | |
844 | saved_handlers[3].code = SIGIO; | |
845 | saved_handlers[4].code = 0; | |
846 | #else | |
847 | saved_handlers[3].code = 0; | |
848 | #endif | |
849 | ||
efa04277 RS |
850 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
851 | which somehow wedges the hp compiler. So instead... */ | |
852 | ||
853 | dir = intern ("default-directory"); | |
0e7e7a58 | 854 | if (NILP (Fboundp (dir))) |
efa04277 RS |
855 | goto xyzzy; |
856 | dir = Fsymbol_value (dir); | |
914e81a2 | 857 | if (!STRINGP (dir)) |
efa04277 RS |
858 | goto xyzzy; |
859 | ||
860 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
d5db4077 KR |
861 | str = (unsigned char *) alloca (SCHARS (dir) + 2); |
862 | len = SCHARS (dir); | |
863 | bcopy (SDATA (dir), str, len); | |
efa04277 RS |
864 | if (str[len - 1] != '/') str[len++] = '/'; |
865 | str[len] = 0; | |
866 | xyzzy: | |
867 | ||
ad00c243 | 868 | #ifdef DOS_NT |
7964ba9e | 869 | pid = 0; |
718ca3cf RS |
870 | #if __DJGPP__ > 1 |
871 | save_signal_handlers (saved_handlers); | |
872 | synch_process_alive = 1; | |
873 | #endif /* __DJGPP__ > 1 */ | |
177c0ea7 | 874 | #else |
efa04277 | 875 | pid = vfork (); |
86a5659e JB |
876 | if (pid == -1) |
877 | error ("Can't spawn subshell"); | |
7964ba9e RS |
878 | #endif |
879 | ||
86a5659e JB |
880 | if (pid == 0) |
881 | { | |
7964ba9e | 882 | char *sh = 0; |
86a5659e | 883 | |
ad00c243 | 884 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 885 | getwd (oldwd); |
7964ba9e RS |
886 | if (sh == 0) |
887 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 888 | #endif |
7964ba9e RS |
889 | if (sh == 0) |
890 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
891 | if (sh == 0) |
892 | sh = "sh"; | |
207bdbdb | 893 | |
86a5659e | 894 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 895 | if (str) |
074c438c | 896 | chdir ((char *) str); |
efa04277 | 897 | |
86a5659e JB |
898 | #ifdef subprocesses |
899 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
900 | #endif | |
1593c2fe | 901 | |
6f8b4d01 | 902 | #ifdef SET_EMACS_PRIORITY |
1593c2fe | 903 | { |
31ade731 | 904 | extern EMACS_INT emacs_priority; |
1593c2fe | 905 | |
6f8b4d01 | 906 | if (emacs_priority < 0) |
1593c2fe JB |
907 | nice (-emacs_priority); |
908 | } | |
909 | #endif | |
910 | ||
fe03522b | 911 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 912 | { |
48178f9a EZ |
913 | char *epwd = getenv ("PWD"); |
914 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
915 | |
916 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 917 | if (epwd) |
c0917202 | 918 | { |
48178f9a | 919 | strcpy (old_pwd, epwd); |
c0917202 EZ |
920 | if (str[len - 1] == '/') |
921 | str[len - 1] = '\0'; | |
922 | setenv ("PWD", str, 1); | |
923 | } | |
924 | st = system (sh); | |
925 | chdir (oldwd); | |
48178f9a | 926 | if (epwd) |
c0917202 EZ |
927 | putenv (old_pwd); /* restore previous value */ |
928 | } | |
7964ba9e | 929 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 930 | if (st) |
fe03522b | 931 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 932 | #endif |
207bdbdb | 933 | #else /* not MSDOS */ |
fe03522b | 934 | #ifdef WINDOWSNT |
fe03522b RS |
935 | /* Waits for process completion */ |
936 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 937 | chdir (oldwd); |
fe03522b RS |
938 | if (pid == -1) |
939 | write (1, "Can't execute subshell", 22); | |
fe03522b | 940 | #else /* not WINDOWSNT */ |
e120ea40 | 941 | execlp (sh, sh, (char *) 0); |
86a5659e JB |
942 | write (1, "Can't execute subshell", 22); |
943 | _exit (1); | |
fe03522b | 944 | #endif /* not WINDOWSNT */ |
207bdbdb | 945 | #endif /* not MSDOS */ |
86a5659e JB |
946 | } |
947 | ||
718ca3cf RS |
948 | /* Do this now if we did not do it before. */ |
949 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 950 | save_signal_handlers (saved_handlers); |
ffafc793 | 951 | synch_process_alive = 1; |
718ca3cf RS |
952 | #endif |
953 | ||
ad00c243 | 954 | #ifndef DOS_NT |
86a5659e | 955 | wait_for_termination (pid); |
7964ba9e | 956 | #endif |
86a5659e | 957 | restore_signal_handlers (saved_handlers); |
718ca3cf | 958 | synch_process_alive = 0; |
a0932daa | 959 | #endif /* !VMS */ |
86a5659e | 960 | } |
e0f712ba | 961 | #endif /* !MAC_OS8 */ |
86a5659e | 962 | |
35a05cca | 963 | static void |
86a5659e JB |
964 | save_signal_handlers (saved_handlers) |
965 | struct save_signal *saved_handlers; | |
966 | { | |
967 | while (saved_handlers->code) | |
968 | { | |
508b171c | 969 | saved_handlers->handler |
35a05cca | 970 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
971 | saved_handlers++; |
972 | } | |
973 | } | |
974 | ||
35a05cca | 975 | static void |
86a5659e JB |
976 | restore_signal_handlers (saved_handlers) |
977 | struct save_signal *saved_handlers; | |
978 | { | |
979 | while (saved_handlers->code) | |
980 | { | |
981 | signal (saved_handlers->code, saved_handlers->handler); | |
982 | saved_handlers++; | |
983 | } | |
984 | } | |
985 | \f | |
4d553a13 KL |
986 | #ifndef SIGIO |
987 | /* If SIGIO is broken, don't do anything. */ | |
988 | void | |
989 | init_sigio (int fd) | |
990 | { | |
991 | } | |
992 | ||
993 | void | |
994 | reset_sigio (int fd) | |
995 | { | |
996 | } | |
997 | ||
998 | void | |
999 | request_sigio (void) | |
1000 | { | |
1001 | } | |
1002 | ||
1003 | void | |
1004 | unrequest_sigio (void) | |
1005 | { | |
1006 | } | |
1007 | ||
1008 | #else | |
86a5659e JB |
1009 | #ifdef F_SETFL |
1010 | ||
819b8f00 | 1011 | int old_fcntl_flags[MAXDESC]; |
86a5659e | 1012 | |
08633194 | 1013 | void |
23dab951 RS |
1014 | init_sigio (fd) |
1015 | int fd; | |
86a5659e JB |
1016 | { |
1017 | #ifdef FASYNC | |
819b8f00 KL |
1018 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
1019 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
86a5659e | 1020 | #endif |
23dab951 | 1021 | interrupts_deferred = 0; |
86a5659e JB |
1022 | } |
1023 | ||
590034f9 | 1024 | void |
0a125897 KL |
1025 | reset_sigio (fd) |
1026 | int fd; | |
86a5659e | 1027 | { |
4d553a13 | 1028 | #ifdef FASYNC |
819b8f00 | 1029 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 1030 | #endif |
86a5659e JB |
1031 | } |
1032 | ||
eb8c3be9 | 1033 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
428a555e | 1034 | /* XXX Uhm, FASYNC is not used anymore here. */ |
6d8cf830 | 1035 | /* XXX Yeah, but you need it for SIGIO, don't you? */ |
86a5659e | 1036 | |
08633194 | 1037 | void |
86a5659e JB |
1038 | request_sigio () |
1039 | { | |
428a555e KL |
1040 | /* XXX read_socket_hook is not global anymore. Is blocking SIGIO |
1041 | bad under X? */ | |
1042 | #if 0 | |
6e5b2385 | 1043 | if (noninteractive || read_socket_hook) |
23dab951 | 1044 | return; |
428a555e | 1045 | #endif |
23dab951 | 1046 | |
86a5659e | 1047 | #ifdef SIGWINCH |
e065a56e | 1048 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 1049 | #endif |
0a125897 | 1050 | sigunblock (sigmask (SIGIO)); |
86a5659e JB |
1051 | |
1052 | interrupts_deferred = 0; | |
1053 | } | |
1054 | ||
08633194 | 1055 | void |
0a125897 | 1056 | unrequest_sigio (void) |
428a555e KL |
1057 | { |
1058 | /* XXX read_socket_hook is not global anymore. Is blocking SIGIO | |
1059 | bad under X? */ | |
1060 | #if 0 | |
6e5b2385 | 1061 | if (noninteractive || read_socket_hook) |
23dab951 | 1062 | return; |
428a555e KL |
1063 | #endif |
1064 | ||
86a5659e | 1065 | #ifdef SIGWINCH |
e065a56e | 1066 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 1067 | #endif |
0a125897 | 1068 | sigblock (sigmask (SIGIO)); |
86a5659e JB |
1069 | interrupts_deferred = 1; |
1070 | } | |
1071 | ||
1072 | #else /* no FASYNC */ | |
1073 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
1074 | ||
08633194 | 1075 | void |
86a5659e JB |
1076 | request_sigio () |
1077 | { | |
1078 | int on = 1; | |
23dab951 | 1079 | |
6e5b2385 | 1080 | if (noninteractive || read_socket_hook) |
23dab951 RS |
1081 | return; |
1082 | ||
0a125897 | 1083 | /* XXX CURTTY() is bogus here. */ |
0b0d3e0b | 1084 | ioctl (fileno (CURTTY ()->input), FIOASYNC, &on); |
86a5659e JB |
1085 | interrupts_deferred = 0; |
1086 | } | |
1087 | ||
08633194 | 1088 | void |
16c290d8 | 1089 | unrequest_sigio () |
86a5659e JB |
1090 | { |
1091 | int off = 0; | |
1092 | ||
6e5b2385 | 1093 | if (noninteractive || read_socket_hook) |
23dab951 RS |
1094 | return; |
1095 | ||
0a125897 | 1096 | /* XXX CURTTY() is bogus here. */ |
0b0d3e0b | 1097 | ioctl (fileno (CURTTY ()->input), FIOASYNC, &off); |
86a5659e JB |
1098 | interrupts_deferred = 1; |
1099 | } | |
1100 | ||
1101 | #else /* not FASYNC, not STRIDE */ | |
177c0ea7 | 1102 | |
25ab68af RS |
1103 | #ifdef _CX_UX |
1104 | ||
1105 | #include <termios.h> | |
1106 | ||
08633194 | 1107 | void |
25ab68af RS |
1108 | request_sigio () |
1109 | { | |
1110 | int on = 1; | |
1111 | sigset_t st; | |
1112 | ||
6e5b2385 | 1113 | if (noninteractive || read_socket_hook) |
23dab951 RS |
1114 | return; |
1115 | ||
c4ea52a6 RS |
1116 | sigemptyset (&st); |
1117 | sigaddset (&st, SIGIO); | |
0a125897 | 1118 | ioctl (0, FIOASYNC, &on); /* XXX This fails for multiple ttys. */ |
25ab68af | 1119 | interrupts_deferred = 0; |
c4ea52a6 | 1120 | sigprocmask (SIG_UNBLOCK, &st, (sigset_t *)0); |
25ab68af RS |
1121 | } |
1122 | ||
08633194 | 1123 | void |
25ab68af RS |
1124 | unrequest_sigio () |
1125 | { | |
1126 | int off = 0; | |
1127 | ||
6e5b2385 | 1128 | if (noninteractive || read_socket_hook) |
23dab951 RS |
1129 | return; |
1130 | ||
0a125897 | 1131 | ioctl (0, FIOASYNC, &off); /* XXX This fails for multiple ttys. */ |
25ab68af RS |
1132 | interrupts_deferred = 1; |
1133 | } | |
1134 | ||
1135 | #else /* ! _CX_UX */ | |
feb67dfe | 1136 | #ifndef MSDOS |
25ab68af | 1137 | |
08633194 | 1138 | void |
86a5659e JB |
1139 | request_sigio () |
1140 | { | |
6e5b2385 | 1141 | if (noninteractive || read_socket_hook) |
23dab951 RS |
1142 | return; |
1143 | ||
86a5659e JB |
1144 | croak ("request_sigio"); |
1145 | } | |
177c0ea7 | 1146 | |
08633194 | 1147 | void |
86a5659e JB |
1148 | unrequest_sigio () |
1149 | { | |
6e5b2385 | 1150 | if (noninteractive || read_socket_hook) |
23dab951 RS |
1151 | return; |
1152 | ||
86a5659e JB |
1153 | croak ("unrequest_sigio"); |
1154 | } | |
feb67dfe EZ |
1155 | |
1156 | #endif /* MSDOS */ | |
25ab68af | 1157 | #endif /* _CX_UX */ |
86a5659e JB |
1158 | #endif /* STRIDE */ |
1159 | #endif /* FASYNC */ | |
1160 | #endif /* F_SETFL */ | |
4d553a13 | 1161 | #endif /* SIGIO */ |
86a5659e | 1162 | \f |
9ae8f997 JB |
1163 | /* Saving and restoring the process group of Emacs's terminal. */ |
1164 | ||
0ba73609 | 1165 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1166 | |
1167 | /* The process group of which Emacs was a member when it initially | |
1168 | started. | |
1169 | ||
1170 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1171 | getpid ()), then we know we're running under a shell with job | |
1172 | control (Emacs would never be run as part of a pipeline). | |
1173 | Everything is fine. | |
1174 | ||
1175 | If Emacs was not in its own process group, then we know we're | |
1176 | running under a shell (or a caller) that doesn't know how to | |
1177 | separate itself from Emacs (like sh). Emacs must be in its own | |
1178 | process group in order to receive SIGIO correctly. In this | |
1179 | situation, we put ourselves in our own pgroup, forcibly set the | |
1180 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1181 | the tty's pgroup just like any other terminal setting. If | |
1182 | inherited_group was not the tty's pgroup, then we'll get a | |
1183 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
4edd8a5c KL |
1184 | it goes foreground in the future, which is what should happen. |
1185 | ||
1186 | This variable is initialized in emacs.c. */ | |
9ae8f997 JB |
1187 | int inherited_pgroup; |
1188 | ||
4edd8a5c KL |
1189 | /* Split off the foreground process group to Emacs alone. When we are |
1190 | in the foreground, but not started in our own process group, | |
1191 | redirect the tty device handle FD to point to our own process | |
1192 | group. We need to be in our own process group to receive SIGIO | |
1193 | properly. */ | |
dfcf069d | 1194 | void |
16c290d8 | 1195 | narrow_foreground_group (int fd) |
9ae8f997 JB |
1196 | { |
1197 | int me = getpid (); | |
1198 | ||
4edd8a5c | 1199 | setpgrp (0, inherited_pgroup); |
3453bb3a KL |
1200 | #if 0 |
1201 | /* XXX inherited_pgroup should not be zero here, but GTK seems to | |
1202 | mess this up. */ | |
819b8f00 | 1203 | if (! inherited_pgroup) |
4edd8a5c | 1204 | abort (); /* Should not happen. */ |
3453bb3a | 1205 | #endif |
9ae8f997 | 1206 | if (inherited_pgroup != me) |
4edd8a5c KL |
1207 | EMACS_SET_TTY_PGRP (fd, &me); /* XXX This only works on the controlling tty. */ |
1208 | setpgrp (0, me); | |
9ae8f997 JB |
1209 | } |
1210 | ||
1211 | /* Set the tty to our original foreground group. */ | |
dfcf069d | 1212 | void |
16c290d8 | 1213 | widen_foreground_group (int fd) |
9ae8f997 JB |
1214 | { |
1215 | if (inherited_pgroup != getpid ()) | |
16c290d8 | 1216 | EMACS_SET_TTY_PGRP (fd, &inherited_pgroup); |
4edd8a5c | 1217 | setpgrp (0, inherited_pgroup); |
9ae8f997 JB |
1218 | } |
1219 | ||
0ba73609 | 1220 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1221 | \f |
68936329 JB |
1222 | /* Getting and setting emacs_tty structures. */ |
1223 | ||
1224 | /* Set *TC to the parameters associated with the terminal FD. | |
1225 | Return zero if all's well, or -1 if we ran into an error we | |
1226 | couldn't deal with. */ | |
1227 | int | |
1228 | emacs_get_tty (fd, settings) | |
1229 | int fd; | |
1230 | struct emacs_tty *settings; | |
1231 | { | |
1232 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1233 | #ifdef HAVE_TCATTR | |
1234 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1d9f9f9e | 1235 | bzero (&settings->main, sizeof (settings->main)); |
68936329 JB |
1236 | if (tcgetattr (fd, &settings->main) < 0) |
1237 | return -1; | |
1238 | ||
1239 | #else | |
1240 | #ifdef HAVE_TERMIO | |
1241 | /* The SYSV-style interface? */ | |
1242 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1243 | return -1; | |
1244 | ||
1245 | #else | |
1246 | #ifdef VMS | |
1247 | /* Vehemently Monstrous System? :-) */ | |
1248 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1249 | &settings->main.class, 12, 0, 0, 0, 0) | |
1250 | & 1)) | |
1251 | return -1; | |
1252 | ||
1253 | #else | |
fe03522b | 1254 | #ifndef DOS_NT |
68936329 JB |
1255 | /* I give up - I hope you have the BSD ioctls. */ |
1256 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1257 | return -1; | |
fe03522b | 1258 | #endif /* not DOS_NT */ |
68936329 JB |
1259 | #endif |
1260 | #endif | |
1261 | #endif | |
1262 | ||
1263 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1264 | #ifdef HAVE_LTCHARS |
68936329 JB |
1265 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1266 | return -1; | |
1267 | #endif | |
1268 | ||
1269 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1270 | #ifdef HAVE_TCHARS |
68936329 JB |
1271 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1272 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1273 | return -1; | |
1274 | #endif | |
1275 | ||
1276 | /* We have survived the tempest. */ | |
1277 | return 0; | |
1278 | } | |
1279 | ||
1280 | ||
1281 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1282 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1283 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1284 | |
68936329 | 1285 | int |
394049ec | 1286 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1287 | int fd; |
1288 | struct emacs_tty *settings; | |
394049ec | 1289 | int flushp; |
68936329 JB |
1290 | { |
1291 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1292 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1293 | int i; |
68936329 JB |
1294 | /* We have those nifty POSIX tcmumbleattr functions. |
1295 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 1296 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
1297 | able to perform any of the requested actions, even if some |
1298 | of the requested actions could not be performed. | |
1299 | We must read settings back to ensure tty setup properly. | |
1300 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1301 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1302 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1303 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1304 | { |
1305 | if (errno == EINTR) | |
1306 | continue; | |
1307 | else | |
1308 | return -1; | |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | struct termios new; | |
1313 | ||
1d9f9f9e | 1314 | bzero (&new, sizeof (new)); |
68936329 JB |
1315 | /* Get the current settings, and see if they're what we asked for. */ |
1316 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1317 | /* We cannot use memcmp on the whole structure here because under |
1318 | * aix386 the termios structure has some reserved field that may | |
1319 | * not be filled in. | |
1320 | */ | |
1321 | if ( new.c_iflag == settings->main.c_iflag | |
1322 | && new.c_oflag == settings->main.c_oflag | |
1323 | && new.c_cflag == settings->main.c_cflag | |
1324 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 1325 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 1326 | break; |
e6cc3307 RS |
1327 | else |
1328 | continue; | |
68936329 JB |
1329 | } |
1330 | ||
1331 | #else | |
1332 | #ifdef HAVE_TERMIO | |
1333 | /* The SYSV-style interface? */ | |
394049ec | 1334 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1335 | return -1; |
1336 | ||
1337 | #else | |
1338 | #ifdef VMS | |
1339 | /* Vehemently Monstrous System? :-) */ | |
1340 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1341 | &settings->main.class, 12, 0, 0, 0, 0) | |
1342 | & 1)) | |
1343 | return -1; | |
1344 | ||
1345 | #else | |
fe03522b | 1346 | #ifndef DOS_NT |
68936329 | 1347 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1348 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1349 | return -1; |
fe03522b | 1350 | #endif /* not DOS_NT */ |
68936329 JB |
1351 | |
1352 | #endif | |
1353 | #endif | |
1354 | #endif | |
1355 | ||
1356 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1357 | #ifdef HAVE_LTCHARS |
68936329 JB |
1358 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1359 | return -1; | |
1360 | #endif | |
1361 | ||
1362 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1363 | #ifdef HAVE_TCHARS |
68936329 JB |
1364 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1365 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1366 | return -1; | |
1367 | #endif | |
177c0ea7 | 1368 | |
68936329 JB |
1369 | /* We have survived the tempest. */ |
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | \f | |
86a5659e | 1374 | |
91bac16a JB |
1375 | #ifdef BSD4_1 |
1376 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1377 | sigio. */ | |
1378 | int lmode; | |
1379 | #endif | |
1380 | ||
46f2fdac | 1381 | #ifndef F_SETOWN_BUG |
86a5659e | 1382 | #ifdef F_SETOWN |
819b8f00 | 1383 | int old_fcntl_owner[MAXDESC]; |
86a5659e | 1384 | #endif /* F_SETOWN */ |
46f2fdac | 1385 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1386 | |
86a5659e JB |
1387 | /* This may also be defined in stdio, |
1388 | but if so, this does no harm, | |
1389 | and using the same name avoids wasting the other one's space. */ | |
1390 | ||
6a0d0ed3 KH |
1391 | #ifdef nec_ews_svr4 |
1392 | extern char *_sobuf ; | |
1393 | #else | |
86a5659e JB |
1394 | #if defined (USG) || defined (DGUX) |
1395 | unsigned char _sobuf[BUFSIZ+8]; | |
1396 | #else | |
1397 | char _sobuf[BUFSIZ]; | |
1398 | #endif | |
6a0d0ed3 | 1399 | #endif |
177c0ea7 | 1400 | |
50b8cf60 | 1401 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1402 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1403 | #endif | |
50b8cf60 | 1404 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1405 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
177c0ea7 | 1406 | #endif |
86a5659e | 1407 | |
da8e1115 KL |
1408 | /* Initialize the terminal mode on all tty devices that are currently |
1409 | open. */ | |
1410 | ||
08633194 | 1411 | void |
28d440ab KL |
1412 | init_all_sys_modes (void) |
1413 | { | |
28d7d09f | 1414 | struct tty_display_info *tty; |
16c290d8 | 1415 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1416 | init_sys_modes (tty); |
28d440ab KL |
1417 | } |
1418 | ||
da8e1115 KL |
1419 | /* Initialize the terminal mode on the given tty device. */ |
1420 | ||
28d440ab | 1421 | void |
9628b887 | 1422 | init_sys_modes (tty_out) |
28d7d09f | 1423 | struct tty_display_info *tty_out; |
86a5659e | 1424 | { |
91bac16a JB |
1425 | struct emacs_tty tty; |
1426 | ||
e0f712ba | 1427 | #ifdef MAC_OS8 |
1a578e9b | 1428 | /* cus-start.el complains if delete-exited-processes is not defined */ |
c4ea52a6 RS |
1429 | #ifndef subprocesses |
1430 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
dfe45eff PJ |
1431 | doc: /* *Non-nil means delete processes immediately when they exit. |
1432 | nil means don't delete them until `list-processes' is run. */); | |
c4ea52a6 RS |
1433 | delete_exited_processes = 0; |
1434 | #endif | |
e0f712ba | 1435 | #endif /* MAC_OS8 */ |
c4ea52a6 | 1436 | |
86a5659e JB |
1437 | #ifdef VMS |
1438 | #if 0 | |
1439 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1440 | extern int (*interrupt_signal) (); | |
1441 | #endif | |
1442 | #endif | |
1443 | ||
4ec5cb58 RS |
1444 | Vtty_erase_char = Qnil; |
1445 | ||
86a5659e JB |
1446 | if (noninteractive) |
1447 | return; | |
1448 | ||
0b0d3e0b KL |
1449 | if (!tty_out->output) |
1450 | return; /* The tty is suspended. */ | |
1451 | ||
86a5659e JB |
1452 | #ifdef VMS |
1453 | if (!input_ef) | |
1454 | input_ef = get_kbd_event_flag (); | |
1455 | /* LIB$GET_EF (&input_ef); */ | |
1456 | SYS$CLREF (input_ef); | |
1457 | waiting_for_ast = 0; | |
1458 | if (!timer_ef) | |
1459 | timer_ef = get_timer_event_flag (); | |
1460 | /* LIB$GET_EF (&timer_ef); */ | |
1461 | SYS$CLREF (timer_ef); | |
210b2b4f | 1462 | #if 0 |
86a5659e JB |
1463 | if (!process_ef) |
1464 | { | |
1465 | LIB$GET_EF (&process_ef); | |
1466 | SYS$CLREF (process_ef); | |
1467 | } | |
1468 | if (input_ef / 32 != process_ef / 32) | |
1469 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1470 | #endif |
86a5659e | 1471 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1472 | croak ("Input and timer event flags in different clusters."); |
1473 | #if 0 | |
86a5659e JB |
1474 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1475 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1476 | #endif |
86a5659e JB |
1477 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1478 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1479 | #ifndef VMS4_4 |
1480 | sys_access_reinit (); | |
1481 | #endif | |
9628b887 | 1482 | #endif /* VMS */ |
91bac16a | 1483 | |
0ba73609 | 1484 | #ifdef BSD_PGRPS |
428a555e KL |
1485 | #if 0 |
1486 | /* read_socket_hook is not global anymore. I think doing this | |
1487 | unconditionally will not cause any problems. */ | |
2246281f | 1488 | if (! read_socket_hook && EQ (Vinitial_window_system, Qnil)) |
428a555e | 1489 | #endif |
0b0d3e0b | 1490 | narrow_foreground_group (fileno (tty_out->input)); |
9ae8f997 JB |
1491 | #endif |
1492 | ||
2246281f KL |
1493 | if (! tty_out->old_tty) |
1494 | tty_out->old_tty = (struct emacs_tty *) xmalloc (sizeof (struct emacs_tty)); | |
fca177d4 | 1495 | |
0b0d3e0b | 1496 | EMACS_GET_TTY (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 1497 | |
2246281f | 1498 | tty = *tty_out->old_tty; |
86a5659e | 1499 | |
31be8d24 | 1500 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2246281f | 1501 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 1502 | |
421dd92f | 1503 | #ifdef DGUX |
2246281f KL |
1504 | /* This allows meta to be sent on 8th bit. */ |
1505 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
421dd92f | 1506 | #endif |
2246281f KL |
1507 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1508 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1509 | #ifdef INLCR /* I'm just being cautious, |
1510 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 1511 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 1512 | #endif |
86a5659e | 1513 | #ifdef ISTRIP |
2246281f | 1514 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1515 | #endif |
2246281f KL |
1516 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1517 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1518 | #ifdef IEXTEN |
2246281f | 1519 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1520 | #endif |
2246281f KL |
1521 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
1522 | if (tty_out->flow_control) | |
1523 | { | |
1524 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 1525 | #ifdef IXANY |
2246281f | 1526 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 1527 | #endif /* IXANY */ |
2246281f KL |
1528 | } |
1529 | else | |
1530 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
1531 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1532 | on output */ | |
1533 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 1534 | #ifdef CS8 |
2246281f KL |
1535 | if (tty_out->meta_key) |
1536 | { | |
1537 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
1538 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
1539 | } | |
86a5659e | 1540 | #endif |
2246281f KL |
1541 | if (tty_out->input == stdin) |
1542 | { | |
1543 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
1544 | /* Set up C-g for both SIGQUIT and SIGINT. | |
1545 | We don't know which we will get, but we handle both alike | |
1546 | so which one it really gives us does not matter. */ | |
1547 | tty.main.c_cc[VQUIT] = quit_char; | |
1548 | } | |
1549 | else | |
1550 | { | |
1551 | /* We normally don't get interrupt or quit signals from tty | |
1552 | devices other than our controlling terminal; therefore, | |
1553 | we must handle C-g as normal input. Unfortunately, this | |
1554 | means that the interrupt and quit feature must be | |
1555 | disabled on secondary ttys, or we would not even see the | |
1556 | keypress. | |
1557 | ||
1558 | Note that even though emacsclient could have special code | |
1559 | to pass SIGINT to Emacs, we should _not_ enable | |
1560 | interrupt/quit keys for emacsclient frames. This means | |
1561 | that we can't break out of loops in C code from a | |
1562 | secondary tty frame, but we can always decide what | |
1563 | display the C-g came from, which is more important from a | |
1564 | usability point of view. (Consider the case when two | |
1565 | people work together using the same Emacs instance.) */ | |
1566 | tty.main.c_cc[VINTR] = CDISABLE; | |
1567 | tty.main.c_cc[VQUIT] = CDISABLE; | |
1568 | } | |
1569 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1570 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1571 | #ifdef VSWTCH |
2246281f | 1572 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1573 | of C-z */ |
86a5659e | 1574 | #endif /* VSWTCH */ |
2246281f | 1575 | |
86a5659e | 1576 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1577 | #ifdef VSUSP |
2246281f | 1578 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1579 | #endif /* VSUSP */ |
1580 | #ifdef V_DSUSP | |
2246281f | 1581 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1582 | #endif /* V_DSUSP */ |
e2b40c23 | 1583 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 1584 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 1585 | #endif /* VDSUSP */ |
92c995de | 1586 | #ifdef VLNEXT |
2246281f | 1587 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
1588 | #endif /* VLNEXT */ |
1589 | #ifdef VREPRINT | |
2246281f | 1590 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
1591 | #endif /* VREPRINT */ |
1592 | #ifdef VWERASE | |
2246281f | 1593 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
1594 | #endif /* VWERASE */ |
1595 | #ifdef VDISCARD | |
2246281f | 1596 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 1597 | #endif /* VDISCARD */ |
c179a6d1 | 1598 | |
2246281f KL |
1599 | if (tty_out->flow_control) |
1600 | { | |
421dd92f | 1601 | #ifdef VSTART |
2246281f | 1602 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1603 | #endif /* VSTART */ |
1604 | #ifdef VSTOP | |
2246281f | 1605 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1606 | #endif /* VSTOP */ |
2246281f KL |
1607 | } |
1608 | else | |
1609 | { | |
c179a6d1 | 1610 | #ifdef VSTART |
2246281f | 1611 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
1612 | #endif /* VSTART */ |
1613 | #ifdef VSTOP | |
2246281f | 1614 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 1615 | #endif /* VSTOP */ |
2246281f | 1616 | } |
86a5659e | 1617 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1618 | |
441f6399 | 1619 | #ifdef SET_LINE_DISCIPLINE |
2246281f KL |
1620 | /* Need to explicitly request TERMIODISC line discipline or |
1621 | Ultrix's termios does not work correctly. */ | |
1622 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
441f6399 | 1623 | #endif |
86a5659e JB |
1624 | #ifdef AIX |
1625 | #ifndef IBMR2AIX | |
2246281f KL |
1626 | /* AIX enhanced edit loses NULs, so disable it. */ |
1627 | tty.main.c_line = 0; | |
1628 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1629 | #else |
f5272227 KL |
1630 | tty.main.c_cc[VSTRT] = CDISABLE; |
1631 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1632 | tty.main.c_cc[VSUSP] = CDISABLE; | |
1633 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
86a5659e | 1634 | #endif /* IBMR2AIX */ |
2246281f KL |
1635 | if (tty_out->flow_control) |
1636 | { | |
ac567c95 | 1637 | #ifdef VSTART |
2246281f | 1638 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
1639 | #endif /* VSTART */ |
1640 | #ifdef VSTOP | |
2246281f | 1641 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 1642 | #endif /* VSTOP */ |
2246281f KL |
1643 | } |
1644 | /* Also, PTY overloads NUL and BREAK. | |
1645 | don't ignore break, but don't signal either, so it looks like NUL. | |
1646 | This really serves a purpose only if running in an XTERM window | |
1647 | or via TELNET or the like, but does no harm elsewhere. */ | |
1648 | tty.main.c_iflag &= ~IGNBRK; | |
1649 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1650 | #endif |
1651 | #else /* if not HAVE_TERMIO */ | |
1652 | #ifdef VMS | |
2246281f KL |
1653 | tty.main.tt_char |= TT$M_NOECHO; |
1654 | if (meta_key) | |
1655 | tty.main.tt_char |= TT$M_EIGHTBIT; | |
1656 | if (tty_out->flow_control) | |
1657 | tty.main.tt_char |= TT$M_TTSYNC; | |
1658 | else | |
1659 | tty.main.tt_char &= ~TT$M_TTSYNC; | |
1660 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1661 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1662 | #ifndef DOS_NT |
2246281f KL |
1663 | XSETINT (Vtty_erase_char, tty.main.sg_erase); |
1664 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
1665 | if (meta_key) | |
1666 | tty.main.sg_flags |= ANYP; | |
1667 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1668 | #endif /* not DOS_NT */ |
86a5659e JB |
1669 | #endif /* not VMS (BSD, that is) */ |
1670 | #endif /* not HAVE_TERMIO */ | |
1671 | ||
2246281f KL |
1672 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1673 | and turn off start and stop chars, etc. If not going to use | |
1674 | CBREAK mode, do this anyway so as to turn off local flow | |
1675 | control for user coming over network on 4.2; in this case, | |
1676 | only t_stopc and t_startc really matter. */ | |
91bac16a | 1677 | #ifndef HAVE_TERMIO |
50b8cf60 | 1678 | #ifdef HAVE_TCHARS |
2246281f KL |
1679 | /* Note: if not using CBREAK mode, it makes no difference how we |
1680 | set this */ | |
1681 | tty.tchars = new_tchars; | |
1682 | tty.tchars.t_intrc = quit_char; | |
1683 | if (tty_out->flow_control) | |
1684 | { | |
1685 | tty.tchars.t_startc = '\021'; | |
1686 | tty.tchars.t_stopc = '\023'; | |
1687 | } | |
1688 | ||
1689 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | tty_out->old_tty.lmode; | |
37fd7901 | 1690 | #ifdef ultrix |
2246281f KL |
1691 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt |
1692 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1693 | tty.lmode &= ~LLITOUT; | |
37fd7901 | 1694 | #endif |
2246281f | 1695 | |
91bac16a | 1696 | #ifdef BSD4_1 |
2246281f | 1697 | lmode = tty.lmode; |
91bac16a JB |
1698 | #endif |
1699 | ||
50b8cf60 | 1700 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1701 | #endif /* not HAVE_TERMIO */ |
1702 | ||
50b8cf60 | 1703 | #ifdef HAVE_LTCHARS |
2246281f | 1704 | tty.ltchars = new_ltchars; |
50b8cf60 | 1705 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1706 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
1707 | if (!tty_out->term_initted) |
1708 | internal_terminal_init (); | |
1709 | dos_ttraw (); | |
207bdbdb | 1710 | #endif |
91bac16a | 1711 | |
0b0d3e0b | 1712 | EMACS_SET_TTY (fileno (tty_out->input), &tty, 0); |
86a5659e | 1713 | |
2246281f KL |
1714 | /* This code added to insure that, if flow-control is not to be used, |
1715 | we have an unlocked terminal at the start. */ | |
91bac16a | 1716 | |
86a5659e | 1717 | #ifdef TCXONC |
0b0d3e0b | 1718 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e JB |
1719 | #endif |
1720 | #ifndef APOLLO | |
1721 | #ifdef TIOCSTART | |
0b0d3e0b | 1722 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e JB |
1723 | #endif |
1724 | #endif | |
1725 | ||
d228f207 | 1726 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1727 | #ifdef TCOON |
0b0d3e0b | 1728 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 1729 | #endif |
51417996 | 1730 | #endif |
d228f207 | 1731 | |
b97ab886 | 1732 | #ifdef AIXHFT |
2246281f | 1733 | hft_init (tty_out); |
86a5659e | 1734 | #ifdef IBMR2AIX |
2246281f KL |
1735 | { |
1736 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1737 | to be only LF. This is the way that is done. */ | |
1738 | struct termio tty; | |
1739 | ||
1740 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1741 | write (1, "\033[20l", 5); | |
1742 | } | |
86a5659e | 1743 | #endif |
b97ab886 | 1744 | #endif /* AIXHFT */ |
86a5659e | 1745 | |
86a5659e JB |
1746 | #ifdef VMS |
1747 | /* Appears to do nothing when in PASTHRU mode. | |
0b0d3e0b | 1748 | SYS$QIOW (0, fileno (tty_out->input), IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1749 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1750 | */ | |
2246281f | 1751 | queue_kbd_input (0); |
86a5659e | 1752 | #endif /* VMS */ |
86a5659e JB |
1753 | |
1754 | #ifdef F_SETFL | |
46f2fdac | 1755 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1756 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
2246281f | 1757 | if (interrupt_input) |
86a5659e | 1758 | { |
0b0d3e0b KL |
1759 | old_fcntl_owner[fileno (tty_out->input)] = |
1760 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
1761 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
1762 | init_sigio (fileno (tty_out->input)); | |
86a5659e JB |
1763 | } |
1764 | #endif /* F_GETOWN */ | |
46f2fdac | 1765 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1766 | #endif /* F_SETFL */ |
1767 | ||
1768 | #ifdef BSD4_1 | |
1769 | if (interrupt_input) | |
0b0d3e0b | 1770 | init_sigio (fileno (tty_out->input)); |
86a5659e JB |
1771 | #endif |
1772 | ||
1773 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1774 | #undef _IOFBF | |
1775 | #endif | |
1776 | #ifdef _IOFBF | |
1777 | /* This symbol is defined on recent USG systems. | |
1778 | Someone says without this call USG won't really buffer the file | |
1779 | even with a call to setbuf. */ | |
0b0d3e0b | 1780 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1781 | #else |
0b0d3e0b | 1782 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 1783 | #endif |
4d553a13 | 1784 | |
6ed8eeff | 1785 | tty_set_terminal_modes (tty_out->terminal); |
4b311aaf | 1786 | |
9628b887 KL |
1787 | if (!tty_out->term_initted) |
1788 | { | |
1789 | Lisp_Object tail, frame; | |
1790 | FOR_EACH_FRAME (tail, frame) | |
1791 | { | |
daf01701 | 1792 | /* XXX This needs to be revised. */ |
9628b887 KL |
1793 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1794 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1795 | init_frame_faces (XFRAME (frame)); | |
1796 | } | |
1797 | } | |
045942b2 | 1798 | |
9628b887 | 1799 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1800 | { |
1fb8c4ad | 1801 | /* XXX This seems wrong on multi-tty. */ |
86a5659e JB |
1802 | if (display_completed) |
1803 | direct_output_forward_char (0); | |
1804 | } | |
1805 | else | |
1806 | { | |
9628b887 | 1807 | Lisp_Object tail, frame; |
0137dbf7 | 1808 | frame_garbaged = 1; |
9628b887 KL |
1809 | FOR_EACH_FRAME (tail, frame) |
1810 | { | |
1811 | if (FRAME_TERMCAP_P (XFRAME (frame)) | |
1812 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1813 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1814 | } | |
86a5659e | 1815 | } |
91bac16a | 1816 | |
9628b887 | 1817 | tty_out->term_initted = 1; |
86a5659e JB |
1818 | } |
1819 | ||
1820 | /* Return nonzero if safe to use tabs in output. | |
1821 | At the time this is called, init_sys_modes has not been done yet. */ | |
177c0ea7 | 1822 | |
dfcf069d | 1823 | int |
16c290d8 | 1824 | tabs_safe_p (int fd) |
86a5659e | 1825 | { |
6548cf00 | 1826 | struct emacs_tty etty; |
91bac16a | 1827 | |
16c290d8 | 1828 | EMACS_GET_TTY (fd, &etty); |
6548cf00 | 1829 | return EMACS_TTY_TABS_OK (&etty); |
86a5659e | 1830 | } |
73d5358f | 1831 | \f |
86a5659e | 1832 | /* Get terminal size from system. |
73d5358f RS |
1833 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1834 | We store 0 if there's no valid information. */ | |
86a5659e | 1835 | |
08633194 | 1836 | void |
16c290d8 | 1837 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1838 | { |
86a5659e | 1839 | |
86a5659e | 1840 | #ifdef TIOCGWINSZ |
91bac16a JB |
1841 | |
1842 | /* BSD-style. */ | |
86a5659e | 1843 | struct winsize size; |
91bac16a | 1844 | |
16c290d8 | 1845 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1846 | *widthp = *heightp = 0; |
1847 | else | |
1848 | { | |
1849 | *widthp = size.ws_col; | |
1850 | *heightp = size.ws_row; | |
1851 | } | |
1852 | ||
1853 | #else | |
1854 | #ifdef TIOCGSIZE | |
1855 | ||
1856 | /* SunOS - style. */ | |
177c0ea7 | 1857 | struct ttysize size; |
91bac16a | 1858 | |
16c290d8 | 1859 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1860 | *widthp = *heightp = 0; |
1861 | else | |
1862 | { | |
1863 | *widthp = size.ts_cols; | |
1864 | *heightp = size.ts_lines; | |
1865 | } | |
1866 | ||
1867 | #else | |
86a5659e | 1868 | #ifdef VMS |
91bac16a | 1869 | |
a72c2d97 TTN |
1870 | /* Use a fresh channel since the current one may have stale info |
1871 | (for example, from prior to a suspend); and to avoid a dependency | |
1872 | in the init sequence. */ | |
1873 | int chan; | |
91bac16a | 1874 | struct sensemode tty; |
177c0ea7 | 1875 | |
a72c2d97 TTN |
1876 | SYS$ASSIGN (&input_dsc, &chan, 0, 0); |
1877 | SYS$QIOW (0, chan, IO$_SENSEMODE, &tty, 0, 0, | |
1878 | &tty.class, 12, 0, 0, 0, 0); | |
1879 | SYS$DASSGN (chan); | |
86a5659e JB |
1880 | *widthp = tty.scr_wid; |
1881 | *heightp = tty.scr_len; | |
91bac16a | 1882 | |
207bdbdb RS |
1883 | #else |
1884 | #ifdef MSDOS | |
1885 | *widthp = ScreenCols (); | |
1886 | *heightp = ScreenRows (); | |
86a5659e JB |
1887 | #else /* system doesn't know size */ |
1888 | *widthp = 0; | |
1889 | *heightp = 0; | |
207bdbdb | 1890 | #endif |
91bac16a JB |
1891 | #endif /* not VMS */ |
1892 | #endif /* not SunOS-style */ | |
1893 | #endif /* not BSD-style */ | |
86a5659e | 1894 | } |
91bac16a | 1895 | |
73d5358f RS |
1896 | /* Set the logical window size associated with descriptor FD |
1897 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1898 | ||
1899 | int | |
1900 | set_window_size (fd, height, width) | |
1901 | int fd, height, width; | |
1902 | { | |
1903 | #ifdef TIOCSWINSZ | |
1904 | ||
1905 | /* BSD-style. */ | |
1906 | struct winsize size; | |
1907 | size.ws_row = height; | |
1908 | size.ws_col = width; | |
1909 | ||
1910 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1911 | return 0; /* error */ | |
1912 | else | |
1913 | return 1; | |
1914 | ||
1915 | #else | |
1916 | #ifdef TIOCSSIZE | |
1917 | ||
1918 | /* SunOS - style. */ | |
177c0ea7 | 1919 | struct ttysize size; |
73d5358f RS |
1920 | size.ts_lines = height; |
1921 | size.ts_cols = width; | |
1922 | ||
1923 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1924 | return 0; | |
1925 | else | |
1926 | return 1; | |
1927 | #else | |
1928 | return -1; | |
1929 | #endif /* not SunOS-style */ | |
1930 | #endif /* not BSD-style */ | |
1931 | } | |
1932 | ||
86a5659e | 1933 | \f |
da8e1115 KL |
1934 | |
1935 | /* Prepare all terminal devices for exiting Emacs. */ | |
1936 | ||
28d440ab KL |
1937 | void |
1938 | reset_all_sys_modes (void) | |
1939 | { | |
28d7d09f | 1940 | struct tty_display_info *tty; |
16c290d8 | 1941 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1942 | reset_sys_modes (tty); |
28d440ab KL |
1943 | } |
1944 | ||
0a125897 | 1945 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1946 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1947 | |
08633194 | 1948 | void |
9628b887 | 1949 | reset_sys_modes (tty_out) |
28d7d09f | 1950 | struct tty_display_info *tty_out; |
86a5659e JB |
1951 | { |
1952 | if (noninteractive) | |
1953 | { | |
1954 | fflush (stdout); | |
1955 | return; | |
1956 | } | |
9628b887 | 1957 | if (!tty_out->term_initted) |
86a5659e | 1958 | return; |
da8e1115 | 1959 | |
0b0d3e0b KL |
1960 | if (!tty_out->output) |
1961 | return; /* The tty is suspended. */ | |
1962 | ||
da8e1115 KL |
1963 | /* Go to and clear the last line of the terminal. */ |
1964 | ||
0a125897 | 1965 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
0b0d3e0b | 1966 | |
da8e1115 KL |
1967 | /* Code adapted from tty_clear_end_of_line. */ |
1968 | if (tty_out->TS_clr_line) | |
1969 | { | |
1970 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1971 | } | |
1972 | else | |
1973 | { /* have to do it the hard way */ | |
1974 | int i; | |
ed8dad6b | 1975 | tty_turn_off_insert (tty_out); |
0b0d3e0b | 1976 | |
da8e1115 | 1977 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1978 | { |
1979 | fputc (' ', tty_out->output); | |
1980 | } | |
da8e1115 | 1981 | } |
0b0d3e0b | 1982 | |
0a125897 | 1983 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 KL |
1984 | fflush (tty_out->output); |
1985 | ||
b97ab886 | 1986 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e | 1987 | { |
177c0ea7 | 1988 | /* HFT devices normally use ^J as a LF/CR. We forced it to |
86a5659e JB |
1989 | do the LF only. Now, we need to reset it. */ |
1990 | struct termio tty; | |
1991 | ||
1992 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1993 | write (1, "\033[20h", 5); | |
1994 | } | |
1995 | #endif | |
1996 | ||
6ed8eeff | 1997 | tty_reset_terminal_modes (tty_out->terminal); |
2f98e6e3 | 1998 | |
2a633456 | 1999 | #ifdef BSD_SYSTEM |
86a5659e JB |
2000 | #ifndef BSD4_1 |
2001 | /* Avoid possible loss of output when changing terminal modes. */ | |
0b0d3e0b | 2002 | fsync (fileno (tty_out->output)); |
86a5659e JB |
2003 | #endif |
2004 | #endif | |
91bac16a | 2005 | |
86a5659e | 2006 | #ifdef F_SETFL |
46f2fdac | 2007 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 2008 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
2009 | if (interrupt_input) |
2010 | { | |
0b0d3e0b KL |
2011 | reset_sigio (fileno (tty_out->input)); |
2012 | fcntl (fileno (tty_out->input), F_SETOWN, | |
2013 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
2014 | } |
2015 | #endif /* F_SETOWN */ | |
46f2fdac | 2016 | #endif /* F_SETOWN_BUG */ |
a6b00318 | 2017 | #ifdef O_NDELAY |
0b0d3e0b KL |
2018 | fcntl (fileno (tty_out->input), F_SETFL, |
2019 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NDELAY); | |
a6b00318 | 2020 | #endif |
86a5659e JB |
2021 | #endif /* F_SETFL */ |
2022 | #ifdef BSD4_1 | |
2023 | if (interrupt_input) | |
0b0d3e0b | 2024 | reset_sigio (fileno (tty_out->input)); |
86a5659e | 2025 | #endif /* BSD4_1 */ |
91bac16a | 2026 | |
fca177d4 | 2027 | if (tty_out->old_tty) |
0b0d3e0b | 2028 | while (EMACS_SET_TTY (fileno (tty_out->input), |
fca177d4 | 2029 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 2030 | ; |
86a5659e | 2031 | |
207bdbdb RS |
2032 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
2033 | dos_ttcooked (); | |
2034 | #endif | |
2035 | ||
441f6399 RS |
2036 | #ifdef SET_LINE_DISCIPLINE |
2037 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
2038 | A different old line discipline is therefore not restored, yet. | |
2039 | Restore the old line discipline by hand. */ | |
9628b887 | 2040 | ioctl (0, TIOCSETD, &tty_out->old_tty.main.c_line); |
441f6399 RS |
2041 | #endif |
2042 | ||
b97ab886 | 2043 | #ifdef AIXHFT |
86a5659e JB |
2044 | hft_reset (); |
2045 | #endif | |
9ae8f997 | 2046 | |
0ba73609 | 2047 | #ifdef BSD_PGRPS |
0b0d3e0b | 2048 | widen_foreground_group (fileno (tty_out->input)); |
9ae8f997 | 2049 | #endif |
86a5659e JB |
2050 | } |
2051 | \f | |
2052 | #ifdef HAVE_PTYS | |
2053 | ||
2054 | /* Set up the proper status flags for use of a pty. */ | |
2055 | ||
08633194 | 2056 | void |
86a5659e JB |
2057 | setup_pty (fd) |
2058 | int fd; | |
2059 | { | |
2060 | /* I'm told that TOICREMOTE does not mean control chars | |
2061 | "can't be sent" but rather that they don't have | |
2062 | input-editing or signaling effects. | |
2063 | That should be good, because we have other ways | |
2064 | to do those things in Emacs. | |
2065 | However, telnet mode seems not to work on 4.2. | |
2066 | So TIOCREMOTE is turned off now. */ | |
2067 | ||
2068 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
2069 | will hang. In particular, the "timeout" feature (which | |
2070 | causes a read to return if there is no data available) | |
2071 | does this. Also it is known that telnet mode will hang | |
2072 | in such a way that Emacs must be stopped (perhaps this | |
2073 | is the same problem). | |
177c0ea7 | 2074 | |
86a5659e JB |
2075 | If TIOCREMOTE is turned off, then there is a bug in |
2076 | hp-ux which sometimes loses data. Apparently the | |
2077 | code which blocks the master process when the internal | |
2078 | buffer fills up does not work. Other than this, | |
2079 | though, everything else seems to work fine. | |
177c0ea7 | 2080 | |
86a5659e JB |
2081 | Since the latter lossage is more benign, we may as well |
2082 | lose that way. -- cph */ | |
2083 | #ifdef FIONBIO | |
e20caf05 | 2084 | #if defined(SYSV_PTYS) || defined(UNIX98_PTYS) |
86a5659e JB |
2085 | { |
2086 | int on = 1; | |
2087 | ioctl (fd, FIONBIO, &on); | |
2088 | } | |
2089 | #endif | |
2090 | #endif | |
2091 | #ifdef IBMRTAIX | |
2092 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
2093 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
2094 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
2095 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
2096 | /* change this behavior, but I'm not going to hold my breath. */ | |
2097 | signal (SIGHUP, SIG_IGN); | |
2098 | #endif | |
2099 | } | |
2100 | #endif /* HAVE_PTYS */ | |
2101 | \f | |
2102 | #ifdef VMS | |
2103 | ||
2104 | /* Assigning an input channel is done at the start of Emacs execution. | |
2105 | This is called each time Emacs is resumed, also, but does nothing | |
2106 | because input_chain is no longer zero. */ | |
2107 | ||
dfcf069d | 2108 | void |
86a5659e JB |
2109 | init_vms_input () |
2110 | { | |
2111 | int status; | |
177c0ea7 | 2112 | |
0b0d3e0b | 2113 | if (fileno (CURTTY ()->input)) == 0) |
86a5659e | 2114 | { |
0b0d3e0b | 2115 | status = SYS$ASSIGN (&input_dsc, &fileno (CURTTY ()->input)), 0, 0); |
86a5659e JB |
2116 | if (! (status & 1)) |
2117 | LIB$STOP (status); | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | /* Deassigning the input channel is done before exiting. */ | |
2122 | ||
dfcf069d | 2123 | void |
86a5659e JB |
2124 | stop_vms_input () |
2125 | { | |
0b0d3e0b | 2126 | return SYS$DASSGN (fileno (CURTTY ()->input))); |
86a5659e JB |
2127 | } |
2128 | ||
2129 | short input_buffer; | |
2130 | ||
2131 | /* Request reading one character into the keyboard buffer. | |
2132 | This is done as soon as the buffer becomes empty. */ | |
2133 | ||
dfcf069d | 2134 | void |
86a5659e JB |
2135 | queue_kbd_input () |
2136 | { | |
2137 | int status; | |
210b2b4f JB |
2138 | extern kbd_input_ast (); |
2139 | ||
86a5659e JB |
2140 | waiting_for_ast = 0; |
2141 | stop_input = 0; | |
0b0d3e0b | 2142 | status = SYS$QIO (0, fileno (CURTTY()->input), IO$_READVBLK, |
86a5659e JB |
2143 | &input_iosb, kbd_input_ast, 1, |
2144 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
2145 | } | |
2146 | ||
2147 | int input_count; | |
2148 | ||
2149 | /* Ast routine that is called when keyboard input comes in | |
2150 | in accord with the SYS$QIO above. */ | |
2151 | ||
dfcf069d | 2152 | void |
86a5659e JB |
2153 | kbd_input_ast () |
2154 | { | |
2155 | register int c = -1; | |
2156 | int old_errno = errno; | |
ffd56f97 | 2157 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
2158 | |
2159 | if (waiting_for_ast) | |
2160 | SYS$SETEF (input_ef); | |
2161 | waiting_for_ast = 0; | |
2162 | input_count++; | |
2163 | #ifdef ASTDEBUG | |
2164 | if (input_count == 25) | |
2165 | exit (1); | |
2166 | printf ("Ast # %d,", input_count); | |
2167 | printf (" iosb = %x, %x, %x, %x", | |
2168 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
2169 | input_iosb.term); | |
2170 | #endif | |
2171 | if (input_iosb.offset) | |
2172 | { | |
2173 | c = input_buffer; | |
2174 | #ifdef ASTDEBUG | |
2175 | printf (", char = 0%o", c); | |
2176 | #endif | |
2177 | } | |
2178 | #ifdef ASTDEBUG | |
2179 | printf ("\n"); | |
2180 | fflush (stdout); | |
2181 | sleep (1); | |
2182 | #endif | |
2183 | if (! stop_input) | |
2184 | queue_kbd_input (); | |
2185 | if (c >= 0) | |
2186 | { | |
2187 | struct input_event e; | |
50acda85 SM |
2188 | EVENT_INIT (e); |
2189 | ||
e43bd4f5 | 2190 | e.kind = ASCII_KEYSTROKE_EVENT; |
c81d47b4 | 2191 | XSETINT (e.code, c); |
2d064114 | 2192 | e.frame_or_window = selected_frame; |
86a5659e JB |
2193 | kbd_buffer_store_event (&e); |
2194 | } | |
ffd56f97 JB |
2195 | if (input_available_clear_time) |
2196 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
2197 | errno = old_errno; |
2198 | } | |
2199 | ||
2200 | /* Wait until there is something in kbd_buffer. */ | |
2201 | ||
dfcf069d | 2202 | void |
86a5659e JB |
2203 | wait_for_kbd_input () |
2204 | { | |
2205 | extern int have_process_input, process_exited; | |
2206 | ||
2207 | /* If already something, avoid doing system calls. */ | |
2208 | if (detect_input_pending ()) | |
2209 | { | |
2210 | return; | |
2211 | } | |
2212 | /* Clear a flag, and tell ast routine above to set it. */ | |
2213 | SYS$CLREF (input_ef); | |
2214 | waiting_for_ast = 1; | |
2215 | /* Check for timing error: ast happened while we were doing that. */ | |
2216 | if (!detect_input_pending ()) | |
2217 | { | |
2218 | /* No timing error: wait for flag to be set. */ | |
2219 | set_waiting_for_input (0); | |
2220 | SYS$WFLOR (input_ef, input_eflist); | |
61851c0e | 2221 | clear_waiting_for_input (); |
86a5659e JB |
2222 | if (!detect_input_pending ()) |
2223 | /* Check for subprocess input availability */ | |
2224 | { | |
2225 | int dsp = have_process_input || process_exited; | |
2226 | ||
2227 | SYS$CLREF (process_ef); | |
2228 | if (have_process_input) | |
2229 | process_command_input (); | |
2230 | if (process_exited) | |
2231 | process_exit (); | |
2232 | if (dsp) | |
2233 | { | |
2234 | update_mode_lines++; | |
56b18525 | 2235 | prepare_menu_bars (); |
3007ebfb | 2236 | redisplay_preserve_echo_area (18); |
86a5659e JB |
2237 | } |
2238 | } | |
2239 | } | |
2240 | waiting_for_ast = 0; | |
2241 | } | |
2242 | ||
2243 | /* Get rid of any pending QIO, when we are about to suspend | |
2244 | or when we want to throw away pending input. | |
2245 | We wait for a positive sign that the AST routine has run | |
2246 | and therefore there is no I/O request queued when we return. | |
2247 | SYS$SETAST is used to avoid a timing error. */ | |
2248 | ||
dfcf069d | 2249 | void |
86a5659e JB |
2250 | end_kbd_input () |
2251 | { | |
2252 | #ifdef ASTDEBUG | |
2253 | printf ("At end_kbd_input.\n"); | |
2254 | fflush (stdout); | |
2255 | sleep (1); | |
2256 | #endif | |
2257 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
2258 | { | |
0b0d3e0b | 2259 | SYS$CANCEL (fileno (CURTTY()->input)); |
86a5659e JB |
2260 | return; |
2261 | } | |
2262 | ||
2263 | SYS$SETAST (0); | |
2264 | /* Clear a flag, and tell ast routine above to set it. */ | |
2265 | SYS$CLREF (input_ef); | |
2266 | waiting_for_ast = 1; | |
2267 | stop_input = 1; | |
0b0d3e0b | 2268 | SYS$CANCEL (fileno (CURTTY()->input)); |
86a5659e JB |
2269 | SYS$SETAST (1); |
2270 | SYS$WAITFR (input_ef); | |
2271 | waiting_for_ast = 0; | |
2272 | } | |
2273 | ||
2274 | /* Wait for either input available or time interval expiry. */ | |
2275 | ||
dfcf069d | 2276 | void |
86a5659e JB |
2277 | input_wait_timeout (timeval) |
2278 | int timeval; /* Time to wait, in seconds */ | |
2279 | { | |
2280 | int time [2]; | |
2281 | static int zero = 0; | |
2282 | static int large = -10000000; | |
2283 | ||
2284 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2285 | ||
2286 | /* If already something, avoid doing system calls. */ | |
2287 | if (detect_input_pending ()) | |
2288 | { | |
2289 | return; | |
2290 | } | |
2291 | /* Clear a flag, and tell ast routine above to set it. */ | |
2292 | SYS$CLREF (input_ef); | |
2293 | waiting_for_ast = 1; | |
2294 | /* Check for timing error: ast happened while we were doing that. */ | |
2295 | if (!detect_input_pending ()) | |
2296 | { | |
2297 | /* No timing error: wait for flag to be set. */ | |
2298 | SYS$CANTIM (1, 0); | |
2299 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2300 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2301 | } | |
2302 | waiting_for_ast = 0; | |
2303 | } | |
2304 | ||
2305 | /* The standard `sleep' routine works some other way | |
2306 | and it stops working if you have ever quit out of it. | |
2307 | This one continues to work. */ | |
2308 | ||
2309 | sys_sleep (timeval) | |
2310 | int timeval; | |
2311 | { | |
2312 | int time [2]; | |
2313 | static int zero = 0; | |
2314 | static int large = -10000000; | |
177c0ea7 | 2315 | |
86a5659e JB |
2316 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ |
2317 | ||
2318 | SYS$CANTIM (1, 0); | |
2319 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2320 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2321 | } | |
2322 | ||
08633194 | 2323 | void |
23dab951 RS |
2324 | init_sigio (fd) |
2325 | int fd; | |
86a5659e JB |
2326 | { |
2327 | request_sigio (); | |
2328 | } | |
2329 | ||
0a125897 KL |
2330 | reset_sigio (fd) |
2331 | int fd; | |
86a5659e JB |
2332 | { |
2333 | unrequest_sigio (); | |
2334 | } | |
2335 | ||
08633194 | 2336 | void |
86a5659e JB |
2337 | request_sigio () |
2338 | { | |
6e5b2385 AS |
2339 | if (noninteractive) |
2340 | return; | |
86a5659e JB |
2341 | croak ("request sigio"); |
2342 | } | |
2343 | ||
08633194 | 2344 | void |
86a5659e JB |
2345 | unrequest_sigio () |
2346 | { | |
6e5b2385 AS |
2347 | if (noninteractive) |
2348 | return; | |
86a5659e JB |
2349 | croak ("unrequest sigio"); |
2350 | } | |
2351 | ||
2352 | #endif /* VMS */ | |
2353 | \f | |
2354 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2355 | #ifndef CANNOT_DUMP | |
2356 | #define NEED_STARTS | |
2357 | #endif | |
2358 | ||
2359 | #ifndef SYSTEM_MALLOC | |
2360 | #ifndef NEED_STARTS | |
2361 | #define NEED_STARTS | |
2362 | #endif | |
2363 | #endif | |
2364 | ||
2365 | #ifdef NEED_STARTS | |
2366 | /* Some systems that cannot dump also cannot implement these. */ | |
2367 | ||
2368 | /* | |
2369 | * Return the address of the start of the text segment prior to | |
2370 | * doing an unexec. After unexec the return value is undefined. | |
2371 | * See crt0.c for further explanation and _start. | |
2372 | * | |
2373 | */ | |
2374 | ||
c0c9ac48 | 2375 | #if !(defined (__NetBSD__) && defined (__ELF__)) |
260fe597 | 2376 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2377 | char * |
2378 | start_of_text () | |
2379 | { | |
2380 | #ifdef TEXT_START | |
2381 | return ((char *) TEXT_START); | |
2382 | #else | |
2383 | #ifdef GOULD | |
2384 | extern csrt (); | |
2385 | return ((char *) csrt); | |
2386 | #else /* not GOULD */ | |
2387 | extern int _start (); | |
2388 | return ((char *) _start); | |
2389 | #endif /* GOULD */ | |
2390 | #endif /* TEXT_START */ | |
2391 | } | |
260fe597 | 2392 | #endif /* not HAVE_TEXT_START */ |
c0c9ac48 | 2393 | #endif |
86a5659e JB |
2394 | |
2395 | /* | |
2396 | * Return the address of the start of the data segment prior to | |
2397 | * doing an unexec. After unexec the return value is undefined. | |
2398 | * See crt0.c for further information and definition of data_start. | |
2399 | * | |
2400 | * Apparently, on BSD systems this is etext at startup. On | |
2401 | * USG systems (swapping) this is highly mmu dependent and | |
2402 | * is also dependent on whether or not the program is running | |
2403 | * with shared text. Generally there is a (possibly large) | |
2404 | * gap between end of text and start of data with shared text. | |
2405 | * | |
2406 | * On Uniplus+ systems with shared text, data starts at a | |
2407 | * fixed address. Each port (from a given oem) is generally | |
2408 | * different, and the specific value of the start of data can | |
2409 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2410 | * however the method outlined in crt0.c seems to be more portable. | |
2411 | * | |
2412 | * Probably what will have to happen when a USG unexec is available, | |
2413 | * at least on UniPlus, is temacs will have to be made unshared so | |
2414 | * that text and data are contiguous. Then once loadup is complete, | |
2415 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2416 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2417 | * will be patched by unexec to the correct value. |
2418 | * | |
2419 | */ | |
177c0ea7 | 2420 | |
be3abfa2 | 2421 | #ifndef start_of_data |
86a5659e JB |
2422 | char * |
2423 | start_of_data () | |
2424 | { | |
2425 | #ifdef DATA_START | |
2426 | return ((char *) DATA_START); | |
6c65530f JB |
2427 | #else |
2428 | #ifdef ORDINARY_LINK | |
2429 | /* | |
2430 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2431 | * data_start isn't defined. We take the address of environ, which | |
2432 | * is known to live at or near the start of the system crt0.c, and | |
2433 | * we don't sweat the handful of bytes that might lose. | |
2434 | */ | |
2435 | extern char **environ; | |
2436 | ||
c4ea52a6 | 2437 | return ((char *) &environ); |
86a5659e JB |
2438 | #else |
2439 | extern int data_start; | |
2440 | return ((char *) &data_start); | |
6c65530f JB |
2441 | #endif /* ORDINARY_LINK */ |
2442 | #endif /* DATA_START */ | |
86a5659e | 2443 | } |
be3abfa2 | 2444 | #endif /* start_of_data */ |
86a5659e | 2445 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ |
86a5659e | 2446 | \f |
c0c86835 KH |
2447 | /* init_system_name sets up the string for the Lisp function |
2448 | system-name to return. */ | |
86a5659e JB |
2449 | |
2450 | #ifdef BSD4_1 | |
2451 | #include <whoami.h> | |
2452 | #endif | |
2453 | ||
c0c86835 | 2454 | extern Lisp_Object Vsystem_name; |
86a5659e | 2455 | |
f8a80313 | 2456 | #ifndef BSD4_1 |
f8a80313 RS |
2457 | #ifndef VMS |
2458 | #ifdef HAVE_SOCKETS | |
2459 | #include <sys/socket.h> | |
2460 | #include <netdb.h> | |
2461 | #endif /* HAVE_SOCKETS */ | |
2462 | #endif /* not VMS */ | |
f8a80313 RS |
2463 | #endif /* not BSD4_1 */ |
2464 | ||
8581cd64 KH |
2465 | #ifdef TRY_AGAIN |
2466 | #ifndef HAVE_H_ERRNO | |
2467 | extern int h_errno; | |
2468 | #endif | |
2469 | #endif /* TRY_AGAIN */ | |
2470 | ||
c0c86835 KH |
2471 | void |
2472 | init_system_name () | |
86a5659e | 2473 | { |
86a5659e | 2474 | #ifdef BSD4_1 |
c0c86835 | 2475 | Vsystem_name = build_string (sysname); |
67004ffb | 2476 | #else |
67004ffb | 2477 | #ifdef VMS |
c0c86835 KH |
2478 | char *sp, *end; |
2479 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2480 | Vsystem_name = build_string ("vax-vms"); | |
2481 | else if ((end = index (sp, ':')) == 0) | |
2482 | Vsystem_name = build_string (sp); | |
2483 | else | |
2484 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2485 | #else |
210b2b4f | 2486 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2487 | struct utsname uts; |
2488 | uname (&uts); | |
2489 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2490 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2491 | unsigned int hostname_size = 256; |
c0c86835 KH |
2492 | char *hostname = (char *) alloca (hostname_size); |
2493 | ||
2494 | /* Try to get the host name; if the buffer is too short, try | |
2495 | again. Apparently, the only indication gethostname gives of | |
2496 | whether the buffer was large enough is the presence or absence | |
2497 | of a '\0' in the string. Eech. */ | |
2498 | for (;;) | |
2499 | { | |
2500 | gethostname (hostname, hostname_size - 1); | |
2501 | hostname[hostname_size - 1] = '\0'; | |
2502 | ||
2503 | /* Was the buffer large enough for the '\0'? */ | |
2504 | if (strlen (hostname) < hostname_size - 1) | |
2505 | break; | |
2506 | ||
2507 | hostname_size <<= 1; | |
2508 | hostname = (char *) alloca (hostname_size); | |
2509 | } | |
67004ffb | 2510 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2511 | /* Turn the hostname into the official, fully-qualified hostname. |
2512 | Don't do this if we're going to dump; this can confuse system | |
2513 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2514 | #ifndef CANNOT_DUMP |
c0c86835 | 2515 | if (initialized) |
67004ffb | 2516 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2517 | if (! index (hostname, '.')) |
2518 | { | |
2519 | struct hostent *hp; | |
2520 | int count; | |
2521 | for (count = 0;; count++) | |
2522 | { | |
e24f1d55 | 2523 | #ifdef TRY_AGAIN |
960d894c | 2524 | h_errno = 0; |
e24f1d55 | 2525 | #endif |
960d894c | 2526 | hp = gethostbyname (hostname); |
efa04277 | 2527 | #ifdef TRY_AGAIN |
960d894c KH |
2528 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2529 | #endif | |
2530 | break; | |
2531 | if (count >= 5) | |
2532 | break; | |
2533 | Fsleep_for (make_number (1), Qnil); | |
2534 | } | |
2535 | if (hp) | |
2536 | { | |
2537 | char *fqdn = (char *) hp->h_name; | |
7c15926f | 2538 | #if 0 |
960d894c | 2539 | char *p; |
7c15926f | 2540 | #endif |
960d894c KH |
2541 | |
2542 | if (!index (fqdn, '.')) | |
2543 | { | |
2544 | /* We still don't have a fully qualified domain name. | |
2545 | Try to find one in the list of alternate names */ | |
2546 | char **alias = hp->h_aliases; | |
2547 | while (*alias && !index (*alias, '.')) | |
2548 | alias++; | |
2549 | if (*alias) | |
2550 | fqdn = *alias; | |
2551 | } | |
2552 | hostname = fqdn; | |
ab1649fe | 2553 | #if 0 |
960d894c KH |
2554 | /* Convert the host name to lower case. */ |
2555 | /* Using ctype.h here would introduce a possible locale | |
2556 | dependence that is probably wrong for hostnames. */ | |
2557 | p = hostname; | |
2558 | while (*p) | |
2559 | { | |
2560 | if (*p >= 'A' && *p <= 'Z') | |
2561 | *p += 'a' - 'A'; | |
2562 | p++; | |
2563 | } | |
2564 | #endif | |
2565 | } | |
2566 | } | |
67004ffb | 2567 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2568 | /* We used to try using getdomainname here, |
2569 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2570 | getdomainname gets the NIS/YP domain which often is not the same |
2571 | as in Internet domain name. */ | |
6250a9db KH |
2572 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2573 | correct Internet domain. */ | |
0b93aa53 | 2574 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2575 | if (! index (hostname, '.')) |
2576 | { | |
2577 | /* The hostname is not fully qualified. Append the domain name. */ | |
2578 | ||
2579 | int hostlen = strlen (hostname); | |
2580 | int domain_size = 256; | |
2581 | ||
2582 | for (;;) | |
2583 | { | |
825e7e55 RS |
2584 | char *domain = (char *) alloca (domain_size + 1); |
2585 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2586 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2587 | if (sys_domain_size <= 0) | |
2588 | break; | |
2589 | if (domain_size < sys_domain_size) | |
2590 | { | |
2591 | domain_size = sys_domain_size; | |
2592 | continue; | |
2593 | } | |
b05af5d3 | 2594 | strcpy (fqdn, hostname); |
825e7e55 RS |
2595 | if (domain[0] == '.') |
2596 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2597 | else if (domain[0] != 0) |
825e7e55 RS |
2598 | { |
2599 | fqdn[hostlen] = '.'; | |
2600 | strcpy (fqdn + hostlen + 1, domain); | |
2601 | } | |
b05af5d3 PE |
2602 | hostname = fqdn; |
2603 | break; | |
2604 | } | |
2605 | } | |
0b93aa53 | 2606 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2607 | #endif /* 0 */ |
c0c86835 | 2608 | Vsystem_name = build_string (hostname); |
67004ffb | 2609 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2610 | #endif /* VMS */ |
67004ffb | 2611 | #endif /* BSD4_1 */ |
c0c86835 KH |
2612 | { |
2613 | unsigned char *p; | |
d5db4077 | 2614 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
2615 | if (*p == ' ' || *p == '\t') |
2616 | *p = '-'; | |
2617 | } | |
67004ffb | 2618 | } |
86a5659e | 2619 | \f |
7964ba9e | 2620 | #ifndef MSDOS |
86a5659e | 2621 | #ifndef VMS |
86d1f23a | 2622 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2623 | |
86d1f23a KH |
2624 | #include "sysselect.h" |
2625 | #undef select | |
2626 | ||
2627 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2628 | /* Cause explanatory error message at compile time, |
2629 | since the select emulation is not good enough for X. */ | |
2630 | int *x = &x_windows_lose_if_no_select_system_call; | |
2631 | #endif | |
2632 | ||
2633 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2634 | * Only checks read descriptors. | |
2635 | */ | |
2636 | /* How long to wait between checking fds in select */ | |
2637 | #define SELECT_PAUSE 1 | |
2638 | int select_alarmed; | |
2639 | ||
2640 | /* For longjmp'ing back to read_input_waiting. */ | |
2641 | ||
2642 | jmp_buf read_alarm_throw; | |
2643 | ||
2644 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2645 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2646 | ||
2647 | int read_alarm_should_throw; | |
2648 | ||
2649 | SIGTYPE | |
2650 | select_alarm () | |
2651 | { | |
2652 | select_alarmed = 1; | |
2653 | #ifdef BSD4_1 | |
2654 | sigrelse (SIGALRM); | |
2655 | #else /* not BSD4_1 */ | |
2656 | signal (SIGALRM, SIG_IGN); | |
2657 | #endif /* not BSD4_1 */ | |
333f1b6f | 2658 | SIGNAL_THREAD_CHECK (SIGALRM); |
86a5659e JB |
2659 | if (read_alarm_should_throw) |
2660 | longjmp (read_alarm_throw, 1); | |
2661 | } | |
2662 | ||
9d9f1812 | 2663 | #ifndef WINDOWSNT |
86a5659e JB |
2664 | /* Only rfds are checked. */ |
2665 | int | |
86d1f23a | 2666 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2667 | int nfds; |
86d1f23a KH |
2668 | SELECT_TYPE *rfds, *wfds, *efds; |
2669 | EMACS_TIME *timeout; | |
86a5659e | 2670 | { |
2246281f KL |
2671 | /* XXX This needs to be updated for multi-tty support. Is there |
2672 | anybody who needs to emulate select these days? */ | |
2673 | int ravail = 0; | |
86d1f23a KH |
2674 | SELECT_TYPE orfds; |
2675 | int timeoutval; | |
2676 | int *local_timeout; | |
86a5659e JB |
2677 | extern int proc_buffered_char[]; |
2678 | #ifndef subprocesses | |
2679 | int process_tick = 0, update_tick = 0; | |
2680 | #else | |
2681 | extern int process_tick, update_tick; | |
2682 | #endif | |
86a5659e JB |
2683 | unsigned char buf; |
2684 | ||
86d1f23a KH |
2685 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2686 | /* If we're using X, then the native select will work; we only need the | |
2687 | emulation for non-X usage. */ | |
2246281f | 2688 | if (!NILP (Vinitial_window_system)) |
86d1f23a KH |
2689 | return select (nfds, rfds, wfds, efds, timeout); |
2690 | #endif | |
2691 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2692 | local_timeout = &timeoutval; | |
2693 | FD_ZERO (&orfds); | |
86a5659e JB |
2694 | if (rfds) |
2695 | { | |
2696 | orfds = *rfds; | |
86d1f23a | 2697 | FD_ZERO (rfds); |
86a5659e JB |
2698 | } |
2699 | if (wfds) | |
86d1f23a | 2700 | FD_ZERO (wfds); |
86a5659e | 2701 | if (efds) |
86d1f23a | 2702 | FD_ZERO (efds); |
86a5659e JB |
2703 | |
2704 | /* If we are looking only for the terminal, with no timeout, | |
2705 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2706 | if (*local_timeout == 100000 && process_tick == update_tick |
2707 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2708 | { |
86d1f23a KH |
2709 | int fd; |
2710 | for (fd = 1; fd < nfds; ++fd) | |
2711 | if (FD_ISSET (fd, &orfds)) | |
2712 | goto hardway; | |
86a5659e JB |
2713 | if (! detect_input_pending ()) |
2714 | read_input_waiting (); | |
86d1f23a | 2715 | FD_SET (0, rfds); |
86a5659e JB |
2716 | return 1; |
2717 | } | |
2718 | ||
86d1f23a | 2719 | hardway: |
86a5659e JB |
2720 | /* Once a second, till the timer expires, check all the flagged read |
2721 | * descriptors to see if any input is available. If there is some then | |
2722 | * set the corresponding bit in the return copy of rfds. | |
177c0ea7 | 2723 | */ |
86a5659e JB |
2724 | while (1) |
2725 | { | |
86d1f23a | 2726 | register int to_check, fd; |
86a5659e JB |
2727 | |
2728 | if (rfds) | |
2729 | { | |
86d1f23a | 2730 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2731 | { |
86d1f23a | 2732 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2733 | { |
2734 | int avail = 0, status = 0; | |
2735 | ||
86d1f23a | 2736 | if (fd == 0) |
86a5659e JB |
2737 | avail = detect_input_pending (); /* Special keyboard handler */ |
2738 | else | |
2739 | { | |
2740 | #ifdef FIONREAD | |
2741 | status = ioctl (fd, FIONREAD, &avail); | |
2742 | #else /* no FIONREAD */ | |
2743 | /* Hoping it will return -1 if nothing available | |
2744 | or 0 if all 0 chars requested are read. */ | |
2745 | if (proc_buffered_char[fd] >= 0) | |
2746 | avail = 1; | |
2747 | else | |
2748 | { | |
2749 | avail = read (fd, &buf, 1); | |
2750 | if (avail > 0) | |
2751 | proc_buffered_char[fd] = buf; | |
2752 | } | |
2753 | #endif /* no FIONREAD */ | |
2754 | } | |
2755 | if (status >= 0 && avail > 0) | |
2756 | { | |
86d1f23a | 2757 | FD_SET (fd, rfds); |
86a5659e JB |
2758 | ravail++; |
2759 | } | |
2760 | } | |
2761 | } | |
2762 | } | |
2763 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2764 | break; | |
ffdcc91d GM |
2765 | |
2766 | turn_on_atimers (0); | |
2767 | signal (SIGALRM, select_alarm); | |
86a5659e JB |
2768 | select_alarmed = 0; |
2769 | alarm (SELECT_PAUSE); | |
177c0ea7 | 2770 | |
86a5659e JB |
2771 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
2772 | while (select_alarmed == 0 && *local_timeout != 0 | |
2773 | && process_tick == update_tick) | |
2774 | { | |
2775 | /* If we are interested in terminal input, | |
2776 | wait by reading the terminal. | |
2777 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2778 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2779 | { |
2780 | read_input_waiting (); | |
2781 | if (detect_input_pending ()) | |
2782 | select_alarmed = 1; | |
2783 | } | |
2784 | else | |
2785 | pause (); | |
2786 | } | |
2787 | (*local_timeout) -= SELECT_PAUSE; | |
177c0ea7 | 2788 | |
ffdcc91d GM |
2789 | /* Reset the old alarm if there was one. */ |
2790 | turn_on_atimers (1); | |
177c0ea7 | 2791 | |
86a5659e JB |
2792 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
2793 | break; | |
2794 | } | |
2795 | return ravail; | |
2796 | } | |
9d9f1812 | 2797 | #endif not WINDOWSNT |
86a5659e JB |
2798 | |
2799 | /* Read keyboard input into the standard buffer, | |
2800 | waiting for at least one character. */ | |
2801 | ||
dfcf069d | 2802 | void |
86a5659e JB |
2803 | read_input_waiting () |
2804 | { | |
2246281f KL |
2805 | /* XXX This needs to be updated for multi-tty support. Is there |
2806 | anybody who needs to emulate select these days? */ | |
34567704 JB |
2807 | int nread, i; |
2808 | extern int quit_char; | |
86a5659e JB |
2809 | |
2810 | if (read_socket_hook) | |
2811 | { | |
9f893fc6 KS |
2812 | struct input_event hold_quit; |
2813 | ||
2814 | EVENT_INIT (hold_quit); | |
2815 | hold_quit.kind = NO_EVENT; | |
2816 | ||
86a5659e JB |
2817 | read_alarm_should_throw = 0; |
2818 | if (! setjmp (read_alarm_throw)) | |
9f893fc6 | 2819 | nread = (*read_socket_hook) (0, 1, &hold_quit); |
86a5659e JB |
2820 | else |
2821 | nread = -1; | |
f4a7e5bd | 2822 | |
9f893fc6 KS |
2823 | if (hold_quit.kind != NO_EVENT) |
2824 | kbd_buffer_store_event (&hold_quit); | |
86a5659e JB |
2825 | } |
2826 | else | |
86a5659e | 2827 | { |
50acda85 | 2828 | struct input_event e; |
f4a7e5bd RS |
2829 | char buf[3]; |
2830 | nread = read (fileno (stdin), buf, 1); | |
50acda85 | 2831 | EVENT_INIT (e); |
f4a7e5bd RS |
2832 | |
2833 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
e43bd4f5 | 2834 | e.kind = ASCII_KEYSTROKE_EVENT; |
2d064114 | 2835 | e.frame_or_window = selected_frame; |
f4a7e5bd RS |
2836 | e.modifiers = 0; |
2837 | for (i = 0; i < nread; i++) | |
a00d5589 | 2838 | { |
f4a7e5bd RS |
2839 | /* Convert chars > 0177 to meta events if desired. |
2840 | We do this under the same conditions that read_avail_input does. */ | |
2841 | if (read_socket_hook == 0) | |
2842 | { | |
2843 | /* If the user says she has a meta key, then believe her. */ | |
2844 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2845 | e.modifiers = meta_modifier; | |
2846 | if (meta_key != 2) | |
2847 | buf[i] &= ~0x80; | |
2848 | } | |
b95520f5 | 2849 | |
c81d47b4 | 2850 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2851 | kbd_buffer_store_event (&e); |
2852 | /* Don't look at input that follows a C-g too closely. | |
2853 | This reduces lossage due to autorepeat on C-g. */ | |
2854 | if (buf[i] == quit_char) | |
2855 | break; | |
2856 | } | |
86a5659e JB |
2857 | } |
2858 | } | |
2859 | ||
819b8f00 KL |
2860 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
2861 | #define select sys_select | |
2862 | #endif | |
2863 | ||
86a5659e JB |
2864 | #endif /* not HAVE_SELECT */ |
2865 | #endif /* not VMS */ | |
7964ba9e | 2866 | #endif /* not MSDOS */ |
86a5659e JB |
2867 | \f |
2868 | #ifdef BSD4_1 | |
08633194 | 2869 | void |
23dab951 RS |
2870 | init_sigio (fd) |
2871 | int fd; | |
86a5659e JB |
2872 | { |
2873 | if (noninteractive) | |
2874 | return; | |
2875 | lmode = LINTRUP | lmode; | |
23dab951 | 2876 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2877 | } |
2878 | ||
dfcf069d | 2879 | void |
0a125897 KL |
2880 | reset_sigio (fd) |
2881 | int fd; | |
86a5659e JB |
2882 | { |
2883 | if (noninteractive) | |
2884 | return; | |
2885 | lmode = ~LINTRUP & lmode; | |
0a125897 | 2886 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2887 | } |
2888 | ||
08633194 | 2889 | void |
86a5659e JB |
2890 | request_sigio () |
2891 | { | |
6e5b2385 AS |
2892 | if (noninteractive) |
2893 | return; | |
86a5659e JB |
2894 | sigrelse (SIGTINT); |
2895 | ||
2896 | interrupts_deferred = 0; | |
2897 | } | |
2898 | ||
08633194 | 2899 | void |
86a5659e JB |
2900 | unrequest_sigio () |
2901 | { | |
6e5b2385 AS |
2902 | if (noninteractive) |
2903 | return; | |
86a5659e JB |
2904 | sighold (SIGTINT); |
2905 | ||
2906 | interrupts_deferred = 1; | |
2907 | } | |
2908 | ||
2909 | /* still inside #ifdef BSD4_1 */ | |
2910 | #ifdef subprocesses | |
2911 | ||
2912 | int sigheld; /* Mask of held signals */ | |
2913 | ||
dfcf069d | 2914 | void |
86a5659e JB |
2915 | sigholdx (signum) |
2916 | int signum; | |
2917 | { | |
2918 | sigheld |= sigbit (signum); | |
2919 | sighold (signum); | |
2920 | } | |
2921 | ||
dfcf069d | 2922 | void |
86a5659e JB |
2923 | sigisheld (signum) |
2924 | int signum; | |
2925 | { | |
2926 | sigheld |= sigbit (signum); | |
2927 | } | |
2928 | ||
dfcf069d | 2929 | void |
86a5659e JB |
2930 | sigunhold (signum) |
2931 | int signum; | |
2932 | { | |
2933 | sigheld &= ~sigbit (signum); | |
2934 | sigrelse (signum); | |
2935 | } | |
2936 | ||
dfcf069d | 2937 | void |
86a5659e JB |
2938 | sigfree () /* Free all held signals */ |
2939 | { | |
2940 | int i; | |
2941 | for (i = 0; i < NSIG; i++) | |
2942 | if (sigheld & sigbit (i)) | |
2943 | sigrelse (i); | |
2944 | sigheld = 0; | |
2945 | } | |
2946 | ||
dfcf069d | 2947 | int |
86a5659e JB |
2948 | sigbit (i) |
2949 | { | |
2950 | return 1 << (i - 1); | |
2951 | } | |
2952 | #endif /* subprocesses */ | |
2953 | #endif /* BSD4_1 */ | |
2954 | \f | |
2955 | /* POSIX signals support - DJB */ | |
2956 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2957 | ||
2958 | #ifdef POSIX_SIGNALS | |
2959 | ||
c639b0e3 | 2960 | sigset_t empty_mask, full_mask; |
86a5659e | 2961 | |
86a5659e JB |
2962 | signal_handler_t |
2963 | sys_signal (int signal_number, signal_handler_t action) | |
2964 | { | |
c639b0e3 | 2965 | struct sigaction new_action, old_action; |
86a5659e | 2966 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2967 | new_action.sa_handler = action; |
275464e7 | 2968 | #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT) |
25ab68af | 2969 | /* Emacs mostly works better with restartable system services. If this |
55fafcf0 RS |
2970 | flag exists, we probably want to turn it on here. |
2971 | However, on some systems this resets the timeout of `select' | |
2972 | which means that `select' never finishes if it keeps getting signals. | |
2973 | BROKEN_SA_RESTART is defined on those systems. */ | |
275464e7 SM |
2974 | /* It's not clear why the comment above says "mostly works better". --Stef |
2975 | When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll | |
2976 | for pending input so we need long-running syscalls to be interrupted | |
2977 | after a signal that sets the interrupt_input_pending flag. */ | |
25ab68af RS |
2978 | new_action.sa_flags = SA_RESTART; |
2979 | #else | |
4a785b6e | 2980 | new_action.sa_flags = 0; |
25ab68af | 2981 | #endif |
d32b2f3c | 2982 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2983 | return (old_action.sa_handler); |
86a5659e JB |
2984 | } |
2985 | ||
e065a56e JB |
2986 | #ifndef __GNUC__ |
2987 | /* If we're compiling with GCC, we don't need this function, since it | |
2988 | can be written as a macro. */ | |
2989 | sigset_t | |
2990 | sys_sigmask (int sig) | |
2991 | { | |
2992 | sigset_t mask; | |
2993 | sigemptyset (&mask); | |
2994 | sigaddset (&mask, sig); | |
2995 | return mask; | |
2996 | } | |
2997 | #endif | |
2998 | ||
86a5659e JB |
2999 | /* I'd like to have these guys return pointers to the mask storage in here, |
3000 | but there'd be trouble if the code was saving multiple masks. I'll be | |
3001 | safe and pass the structure. It normally won't be more than 2 bytes | |
3002 | anyhow. - DJB */ | |
3003 | ||
3004 | sigset_t | |
3005 | sys_sigblock (sigset_t new_mask) | |
3006 | { | |
3007 | sigset_t old_mask; | |
3008 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
3009 | return (old_mask); | |
3010 | } | |
3011 | ||
3012 | sigset_t | |
3013 | sys_sigunblock (sigset_t new_mask) | |
3014 | { | |
3015 | sigset_t old_mask; | |
3016 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
3017 | return (old_mask); | |
3018 | } | |
3019 | ||
3020 | sigset_t | |
3021 | sys_sigsetmask (sigset_t new_mask) | |
3022 | { | |
3023 | sigset_t old_mask; | |
3024 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
3025 | return (old_mask); | |
3026 | } | |
3027 | ||
3028 | #endif /* POSIX_SIGNALS */ | |
3029 | \f | |
b80263be | 3030 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
3031 | static char *my_sys_siglist[NSIG]; |
3032 | # ifdef sys_siglist | |
3033 | # undef sys_siglist | |
3034 | # endif | |
3035 | # define sys_siglist my_sys_siglist | |
3036 | #endif | |
3037 | ||
3038 | void | |
3039 | init_signals () | |
3040 | { | |
3041 | #ifdef POSIX_SIGNALS | |
3042 | sigemptyset (&empty_mask); | |
3043 | sigfillset (&full_mask); | |
3044 | #endif | |
3045 | ||
b80263be | 3046 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
3047 | if (! initialized) |
3048 | { | |
3049 | # ifdef SIGABRT | |
3050 | sys_siglist[SIGABRT] = "Aborted"; | |
3051 | # endif | |
3052 | # ifdef SIGAIO | |
3053 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
3054 | # endif | |
3055 | # ifdef SIGALRM | |
3056 | sys_siglist[SIGALRM] = "Alarm clock"; | |
3057 | # endif | |
3058 | # ifdef SIGBUS | |
3059 | sys_siglist[SIGBUS] = "Bus error"; | |
3060 | # endif | |
3061 | # ifdef SIGCLD | |
3062 | sys_siglist[SIGCLD] = "Child status changed"; | |
3063 | # endif | |
3064 | # ifdef SIGCHLD | |
3065 | sys_siglist[SIGCHLD] = "Child status changed"; | |
3066 | # endif | |
3067 | # ifdef SIGCONT | |
3068 | sys_siglist[SIGCONT] = "Continued"; | |
3069 | # endif | |
3070 | # ifdef SIGDANGER | |
3071 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
3072 | # endif | |
3073 | # ifdef SIGDGNOTIFY | |
3074 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
3075 | # endif | |
3076 | # ifdef SIGEMT | |
3077 | sys_siglist[SIGEMT] = "Emulation trap"; | |
3078 | # endif | |
3079 | # ifdef SIGFPE | |
3080 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
3081 | # endif | |
3082 | # ifdef SIGFREEZE | |
3083 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
3084 | # endif | |
3085 | # ifdef SIGGRANT | |
3086 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
3087 | # endif | |
3088 | # ifdef SIGHUP | |
3089 | sys_siglist[SIGHUP] = "Hangup"; | |
3090 | # endif | |
3091 | # ifdef SIGILL | |
3092 | sys_siglist[SIGILL] = "Illegal instruction"; | |
3093 | # endif | |
3094 | # ifdef SIGINT | |
3095 | sys_siglist[SIGINT] = "Interrupt"; | |
3096 | # endif | |
3097 | # ifdef SIGIO | |
3098 | sys_siglist[SIGIO] = "I/O possible"; | |
3099 | # endif | |
3100 | # ifdef SIGIOINT | |
3101 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
3102 | # endif | |
3103 | # ifdef SIGIOT | |
3104 | sys_siglist[SIGIOT] = "IOT trap"; | |
3105 | # endif | |
3106 | # ifdef SIGKILL | |
3107 | sys_siglist[SIGKILL] = "Killed"; | |
3108 | # endif | |
3109 | # ifdef SIGLOST | |
3110 | sys_siglist[SIGLOST] = "Resource lost"; | |
3111 | # endif | |
3112 | # ifdef SIGLWP | |
3113 | sys_siglist[SIGLWP] = "SIGLWP"; | |
3114 | # endif | |
3115 | # ifdef SIGMSG | |
3116 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
3117 | # endif | |
3118 | # ifdef SIGPHONE | |
3119 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
3120 | # endif | |
3121 | # ifdef SIGPIPE | |
3122 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
3123 | # endif | |
3124 | # ifdef SIGPOLL | |
3125 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
3126 | # endif | |
3127 | # ifdef SIGPROF | |
3128 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
3129 | # endif | |
3130 | # ifdef SIGPTY | |
3131 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
3132 | # endif | |
3133 | # ifdef SIGPWR | |
3134 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
3135 | # endif | |
3136 | # ifdef SIGQUIT | |
3137 | sys_siglist[SIGQUIT] = "Quit"; | |
3138 | # endif | |
3139 | # ifdef SIGRETRACT | |
3140 | sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; | |
3141 | # endif | |
3142 | # ifdef SIGSAK | |
3143 | sys_siglist[SIGSAK] = "Secure attention"; | |
3144 | # endif | |
3145 | # ifdef SIGSEGV | |
3146 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
3147 | # endif | |
3148 | # ifdef SIGSOUND | |
3149 | sys_siglist[SIGSOUND] = "Sound completed"; | |
3150 | # endif | |
3151 | # ifdef SIGSTOP | |
3152 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
3153 | # endif | |
3154 | # ifdef SIGSTP | |
3155 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
3156 | # endif | |
3157 | # ifdef SIGSYS | |
3158 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
3159 | # endif | |
3160 | # ifdef SIGTERM | |
3161 | sys_siglist[SIGTERM] = "Terminated"; | |
3162 | # endif | |
3163 | # ifdef SIGTHAW | |
3164 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
3165 | # endif | |
3166 | # ifdef SIGTRAP | |
3167 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
3168 | # endif | |
3169 | # ifdef SIGTSTP | |
3170 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
3171 | # endif | |
3172 | # ifdef SIGTTIN | |
3173 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
3174 | # endif | |
3175 | # ifdef SIGTTOU | |
3176 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
3177 | # endif | |
3178 | # ifdef SIGURG | |
3179 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
3180 | # endif | |
3181 | # ifdef SIGUSR1 | |
3182 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
3183 | # endif | |
3184 | # ifdef SIGUSR2 | |
3185 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
3186 | # endif | |
3187 | # ifdef SIGVTALRM | |
3188 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
3189 | # endif | |
3190 | # ifdef SIGWAITING | |
3191 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
3192 | # endif | |
3193 | # ifdef SIGWINCH | |
3194 | sys_siglist[SIGWINCH] = "Window size changed"; | |
3195 | # endif | |
3196 | # ifdef SIGWIND | |
3197 | sys_siglist[SIGWIND] = "SIGWIND"; | |
3198 | # endif | |
3199 | # ifdef SIGXCPU | |
3200 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
3201 | # endif | |
3202 | # ifdef SIGXFSZ | |
3203 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
3204 | # endif | |
3205 | } | |
b80263be | 3206 | #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */ |
ca9c0567 PE |
3207 | } |
3208 | \f | |
9927a7b1 | 3209 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
3210 | #ifdef random |
3211 | #define HAVE_RANDOM | |
3212 | #endif | |
3213 | #endif | |
3214 | ||
3215 | /* Figure out how many bits the system's random number generator uses. | |
3216 | `random' and `lrand48' are assumed to return 31 usable bits. | |
3217 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
3218 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
3219 | ||
3220 | #ifndef RAND_BITS | |
3221 | # ifdef HAVE_RANDOM | |
3222 | # define RAND_BITS 31 | |
3223 | # else /* !HAVE_RANDOM */ | |
3224 | # ifdef HAVE_LRAND48 | |
3225 | # define RAND_BITS 31 | |
3226 | # define random lrand48 | |
3227 | # else /* !HAVE_LRAND48 */ | |
3228 | # define RAND_BITS 15 | |
3229 | # if RAND_MAX == 32767 | |
3230 | # define random rand | |
3231 | # else /* RAND_MAX != 32767 */ | |
3232 | # if RAND_MAX == 2147483647 | |
3233 | # define random() (rand () >> 16) | |
3234 | # else /* RAND_MAX != 2147483647 */ | |
3235 | # ifdef USG | |
3236 | # define random rand | |
3237 | # else | |
3238 | # define random() (rand () >> 16) | |
2a633456 | 3239 | # endif /* !USG */ |
4bb8c8b7 KH |
3240 | # endif /* RAND_MAX != 2147483647 */ |
3241 | # endif /* RAND_MAX != 32767 */ | |
3242 | # endif /* !HAVE_LRAND48 */ | |
3243 | # endif /* !HAVE_RANDOM */ | |
3244 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 3245 | |
4bb8c8b7 KH |
3246 | void |
3247 | seed_random (arg) | |
3248 | long arg; | |
86a5659e | 3249 | { |
4bb8c8b7 KH |
3250 | #ifdef HAVE_RANDOM |
3251 | srandom ((unsigned int)arg); | |
f8b53a82 | 3252 | #else |
4bb8c8b7 | 3253 | # ifdef HAVE_LRAND48 |
76425a49 | 3254 | srand48 (arg); |
4bb8c8b7 KH |
3255 | # else |
3256 | srand ((unsigned int)arg); | |
3257 | # endif | |
2e46c7c6 | 3258 | #endif |
86a5659e JB |
3259 | } |
3260 | ||
4bb8c8b7 KH |
3261 | /* |
3262 | * Build a full Emacs-sized word out of whatever we've got. | |
3263 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
3264 | */ | |
3265 | long | |
3266 | get_random () | |
3267 | { | |
3268 | long val = random (); | |
3269 | #if VALBITS > RAND_BITS | |
3270 | val = (val << RAND_BITS) ^ random (); | |
3271 | #if VALBITS > 2*RAND_BITS | |
3272 | val = (val << RAND_BITS) ^ random (); | |
3273 | #if VALBITS > 3*RAND_BITS | |
3274 | val = (val << RAND_BITS) ^ random (); | |
3275 | #if VALBITS > 4*RAND_BITS | |
3276 | val = (val << RAND_BITS) ^ random (); | |
3277 | #endif /* need at least 5 */ | |
3278 | #endif /* need at least 4 */ | |
3279 | #endif /* need at least 3 */ | |
3280 | #endif /* need at least 2 */ | |
3281 | return val & ((1L << VALBITS) - 1); | |
3282 | } | |
86a5659e JB |
3283 | \f |
3284 | #ifdef WRONG_NAME_INSQUE | |
3285 | ||
3286 | insque (q,p) | |
3287 | caddr_t q,p; | |
3288 | { | |
3289 | _insque (q,p); | |
3290 | } | |
3291 | ||
3292 | #endif | |
3293 | \f | |
3294 | #ifdef VMS | |
3295 | ||
3296 | #ifdef getenv | |
3297 | /* If any place else asks for the TERM variable, | |
3298 | allow it to be overridden with the EMACS_TERM variable | |
3299 | before attempting to translate the logical name TERM. As a last | |
3300 | resort, ask for VAX C's special idea of the TERM variable. */ | |
3301 | #undef getenv | |
3302 | char * | |
3303 | sys_getenv (name) | |
3304 | char *name; | |
3305 | { | |
3306 | register char *val; | |
3307 | static char buf[256]; | |
3308 | static struct dsc$descriptor_s equiv | |
3309 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
3310 | static struct dsc$descriptor_s d_name | |
3311 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
3312 | short eqlen; | |
3313 | ||
3314 | if (!strcmp (name, "TERM")) | |
3315 | { | |
3316 | val = (char *) getenv ("EMACS_TERM"); | |
3317 | if (val) | |
3318 | return val; | |
3319 | } | |
3320 | ||
3321 | d_name.dsc$w_length = strlen (name); | |
3322 | d_name.dsc$a_pointer = name; | |
986ffb24 | 3323 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
3324 | { |
3325 | char *str = (char *) xmalloc (eqlen + 1); | |
3326 | bcopy (buf, str, eqlen); | |
3327 | str[eqlen] = '\0'; | |
3328 | /* This is a storage leak, but a pain to fix. With luck, | |
3329 | no one will ever notice. */ | |
3330 | return str; | |
3331 | } | |
3332 | return (char *) getenv (name); | |
3333 | } | |
3334 | #endif /* getenv */ | |
3335 | ||
3336 | #ifdef abort | |
3337 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
3338 | to force a call on the debugger from within the image. */ | |
3339 | #undef abort | |
3340 | sys_abort () | |
3341 | { | |
0a125897 | 3342 | reset_all_sys_modes (); |
86a5659e JB |
3343 | LIB$SIGNAL (SS$_DEBUG); |
3344 | } | |
3345 | #endif /* abort */ | |
3346 | #endif /* VMS */ | |
3347 | \f | |
3348 | #ifdef VMS | |
3349 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 3350 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 3351 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
3352 | cannot be shared. The VMS linker incorrectly forces you to use a private |
3353 | version which is uninitialized... If not for this "feature", we | |
3354 | could use the C library definition of sys_nerr and sys_errlist. */ | |
3355 | int sys_nerr = 35; | |
3356 | char *sys_errlist[] = | |
3357 | { | |
3358 | "error 0", | |
3359 | "not owner", | |
3360 | "no such file or directory", | |
3361 | "no such process", | |
3362 | "interrupted system call", | |
3363 | "i/o error", | |
3364 | "no such device or address", | |
3365 | "argument list too long", | |
3366 | "exec format error", | |
3367 | "bad file number", | |
3368 | "no child process", | |
3369 | "no more processes", | |
3370 | "not enough memory", | |
3371 | "permission denied", | |
3372 | "bad address", | |
3373 | "block device required", | |
3374 | "mount devices busy", | |
3375 | "file exists", | |
3376 | "cross-device link", | |
3377 | "no such device", | |
3378 | "not a directory", | |
3379 | "is a directory", | |
3380 | "invalid argument", | |
3381 | "file table overflow", | |
3382 | "too many open files", | |
3383 | "not a typewriter", | |
3384 | "text file busy", | |
3385 | "file too big", | |
3386 | "no space left on device", | |
3387 | "illegal seek", | |
3388 | "read-only file system", | |
3389 | "too many links", | |
3390 | "broken pipe", | |
3391 | "math argument", | |
3392 | "result too large", | |
3393 | "I/O stream empty", | |
3394 | "vax/vms specific error code nontranslatable error" | |
3395 | }; | |
ea5a0917 | 3396 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
3397 | #endif /* LINK_CRTL_SHARE */ |
3398 | #endif /* VMS */ | |
7088d1ca RM |
3399 | |
3400 | #ifndef HAVE_STRERROR | |
fe03522b | 3401 | #ifndef WINDOWSNT |
7088d1ca RM |
3402 | char * |
3403 | strerror (errnum) | |
3404 | int errnum; | |
3405 | { | |
3406 | extern char *sys_errlist[]; | |
3407 | extern int sys_nerr; | |
3408 | ||
3409 | if (errnum >= 0 && errnum < sys_nerr) | |
3410 | return sys_errlist[errnum]; | |
3411 | return (char *) "Unknown error"; | |
3412 | } | |
fe03522b | 3413 | #endif /* not WINDOWSNT */ |
7088d1ca | 3414 | #endif /* ! HAVE_STRERROR */ |
86a5659e | 3415 | \f |
86a5659e | 3416 | int |
68c45bf0 | 3417 | emacs_open (path, oflag, mode) |
8c2ba7de | 3418 | const char *path; |
86a5659e JB |
3419 | int oflag, mode; |
3420 | { | |
3421 | register int rtnval; | |
68c45bf0 PE |
3422 | |
3423 | #ifdef BSD4_1 | |
177c0ea7 | 3424 | if (oflag & O_CREAT) |
68c45bf0 PE |
3425 | return creat (path, mode); |
3426 | #endif | |
177c0ea7 | 3427 | |
86a5659e | 3428 | while ((rtnval = open (path, oflag, mode)) == -1 |
275464e7 SM |
3429 | && (errno == EINTR)) |
3430 | QUIT; | |
86a5659e JB |
3431 | return (rtnval); |
3432 | } | |
3433 | ||
dfcf069d | 3434 | int |
68c45bf0 | 3435 | emacs_close (fd) |
86a5659e JB |
3436 | int fd; |
3437 | { | |
fe111daf | 3438 | int did_retry = 0; |
86a5659e JB |
3439 | register int rtnval; |
3440 | ||
3441 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3442 | && (errno == EINTR)) |
3443 | did_retry = 1; | |
3444 | ||
3445 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3446 | file descriptor. If it did the second close will fail with | |
3447 | errno = EBADF. That means we have succeeded. */ | |
3448 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3449 | return 0; | |
3450 | ||
86a5659e JB |
3451 | return rtnval; |
3452 | } | |
3453 | ||
86a5659e | 3454 | int |
68c45bf0 | 3455 | emacs_read (fildes, buf, nbyte) |
86a5659e JB |
3456 | int fildes; |
3457 | char *buf; | |
3458 | unsigned int nbyte; | |
3459 | { | |
3460 | register int rtnval; | |
177c0ea7 | 3461 | |
86a5659e | 3462 | while ((rtnval = read (fildes, buf, nbyte)) == -1 |
275464e7 SM |
3463 | && (errno == EINTR)) |
3464 | QUIT; | |
86a5659e JB |
3465 | return (rtnval); |
3466 | } | |
3467 | ||
3468 | int | |
68c45bf0 | 3469 | emacs_write (fildes, buf, nbyte) |
86a5659e | 3470 | int fildes; |
7b1cc119 | 3471 | const char *buf; |
86a5659e JB |
3472 | unsigned int nbyte; |
3473 | { | |
b95520f5 | 3474 | register int rtnval, bytes_written; |
86a5659e | 3475 | |
b95520f5 BF |
3476 | bytes_written = 0; |
3477 | ||
3478 | while (nbyte > 0) | |
3479 | { | |
3480 | rtnval = write (fildes, buf, nbyte); | |
3481 | ||
3482 | if (rtnval == -1) | |
3483 | { | |
3484 | if (errno == EINTR) | |
77220eeb SM |
3485 | { |
3486 | #ifdef SYNC_INPUT | |
3487 | /* I originally used `QUIT' but that might causes files to | |
3488 | be truncated if you hit C-g in the middle of it. --Stef */ | |
3489 | if (interrupt_input_pending) | |
3490 | handle_async_input (); | |
3491 | #endif | |
3492 | continue; | |
3493 | } | |
b95520f5 | 3494 | else |
aa670904 | 3495 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3496 | } |
3497 | ||
3498 | buf += rtnval; | |
3499 | nbyte -= rtnval; | |
3500 | bytes_written += rtnval; | |
3501 | } | |
3502 | return (bytes_written); | |
86a5659e | 3503 | } |
86a5659e JB |
3504 | \f |
3505 | #ifdef USG | |
3506 | /* | |
3507 | * All of the following are for USG. | |
3508 | * | |
3509 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3510 | * that the user program has elected to catch. Thus the system call | |
3511 | * must be retried in these cases. To handle this without massive | |
3512 | * changes in the source code, we remap the standard system call names | |
3513 | * to names for our own functions in sysdep.c that do the system call | |
3514 | * with retries. Actually, for portability reasons, it is good | |
3515 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3516 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3517 | * adds an extra level of function call overhead but it is almost |
3518 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3519 | */ | |
3520 | ||
86a5659e JB |
3521 | /* |
3522 | * Warning, this function may not duplicate 4.2 action properly | |
3523 | * under error conditions. | |
3524 | */ | |
3525 | ||
3526 | #ifndef MAXPATHLEN | |
3527 | /* In 4.1, param.h fails to define this. */ | |
3528 | #define MAXPATHLEN 1024 | |
3529 | #endif | |
3530 | ||
3531 | #ifndef HAVE_GETWD | |
3532 | ||
3533 | char * | |
3534 | getwd (pathname) | |
3535 | char *pathname; | |
3536 | { | |
3537 | char *npath, *spath; | |
3538 | extern char *getcwd (); | |
3539 | ||
9ac0d9e0 | 3540 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3541 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 3542 | if (spath == 0) |
18b6bc73 GM |
3543 | { |
3544 | UNBLOCK_INPUT; | |
3545 | return spath; | |
3546 | } | |
86a5659e JB |
3547 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3548 | up to first slash. Should be harmless on other systems. */ | |
3549 | while (*npath && *npath != '/') | |
3550 | npath++; | |
3551 | strcpy (pathname, npath); | |
3552 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3553 | UNBLOCK_INPUT; |
86a5659e JB |
3554 | return pathname; |
3555 | } | |
3556 | ||
3557 | #endif /* HAVE_GETWD */ | |
3558 | ||
3559 | /* | |
3560 | * Emulate rename using unlink/link. Note that this is | |
3561 | * only partially correct. Also, doesn't enforce restriction | |
3562 | * that files be of same type (regular->regular, dir->dir, etc). | |
3563 | */ | |
3564 | ||
4746118a JB |
3565 | #ifndef HAVE_RENAME |
3566 | ||
86a5659e | 3567 | rename (from, to) |
19c7afdf JB |
3568 | const char *from; |
3569 | const char *to; | |
86a5659e JB |
3570 | { |
3571 | if (access (from, 0) == 0) | |
3572 | { | |
3573 | unlink (to); | |
3574 | if (link (from, to) == 0) | |
3575 | if (unlink (from) == 0) | |
3576 | return (0); | |
3577 | } | |
3578 | return (-1); | |
3579 | } | |
3580 | ||
4746118a JB |
3581 | #endif |
3582 | ||
86a5659e JB |
3583 | |
3584 | #ifdef HPUX | |
3585 | #ifndef HAVE_PERROR | |
3586 | ||
3587 | /* HPUX curses library references perror, but as far as we know | |
3588 | it won't be called. Anyway this definition will do for now. */ | |
3589 | ||
3590 | perror () | |
3591 | { | |
3592 | } | |
3593 | ||
3594 | #endif /* not HAVE_PERROR */ | |
3595 | #endif /* HPUX */ | |
3596 | ||
3597 | #ifndef HAVE_DUP2 | |
3598 | ||
3599 | /* | |
3600 | * Emulate BSD dup2. First close newd if it already exists. | |
3601 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3602 | * until we are, then close the unsuccessful ones. | |
3603 | */ | |
3604 | ||
3605 | dup2 (oldd, newd) | |
3606 | int oldd; | |
3607 | int newd; | |
3608 | { | |
3609 | register int fd, ret; | |
177c0ea7 | 3610 | |
68c45bf0 | 3611 | emacs_close (newd); |
86a5659e JB |
3612 | |
3613 | #ifdef F_DUPFD | |
68c45bf0 | 3614 | return fcntl (oldd, F_DUPFD, newd); |
86a5659e JB |
3615 | #else |
3616 | fd = dup (old); | |
3617 | if (fd == -1) | |
3618 | return -1; | |
3619 | if (fd == new) | |
3620 | return new; | |
3621 | ret = dup2 (old,new); | |
68c45bf0 | 3622 | emacs_close (fd); |
86a5659e JB |
3623 | return ret; |
3624 | #endif | |
3625 | } | |
3626 | ||
3627 | #endif /* not HAVE_DUP2 */ | |
3628 | ||
3629 | /* | |
3630 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3631 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3632 | * Only needed when subprocesses are defined. | |
3633 | */ | |
3634 | ||
3635 | #ifdef subprocesses | |
3636 | #ifndef VMS | |
3637 | #ifndef HAVE_GETTIMEOFDAY | |
3638 | #ifdef HAVE_TIMEVAL | |
177c0ea7 | 3639 | |
86a5659e | 3640 | /* ARGSUSED */ |
dfcf069d | 3641 | int |
86a5659e JB |
3642 | gettimeofday (tp, tzp) |
3643 | struct timeval *tp; | |
3644 | struct timezone *tzp; | |
3645 | { | |
3646 | extern long time (); | |
3647 | ||
177c0ea7 | 3648 | tp->tv_sec = time ((long *)0); |
86a5659e | 3649 | tp->tv_usec = 0; |
4ca7594f RS |
3650 | if (tzp != 0) |
3651 | tzp->tz_minuteswest = -1; | |
dfcf069d | 3652 | return 0; |
86a5659e | 3653 | } |
177c0ea7 | 3654 | |
86a5659e JB |
3655 | #endif |
3656 | #endif | |
3657 | #endif | |
3658 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
177c0ea7 | 3659 | |
86a5659e JB |
3660 | /* |
3661 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3662 | */ | |
3663 | ||
dfcf069d | 3664 | void |
86a5659e JB |
3665 | croak (badfunc) |
3666 | char *badfunc; | |
3667 | { | |
3668 | printf ("%s not yet implemented\r\n", badfunc); | |
28d440ab | 3669 | reset_all_sys_modes (); |
86a5659e JB |
3670 | exit (1); |
3671 | } | |
3672 | ||
3673 | #endif /* USG */ | |
3674 | \f | |
86a5659e JB |
3675 | /* Directory routines for systems that don't have them. */ |
3676 | ||
3677 | #ifdef SYSV_SYSTEM_DIR | |
3678 | ||
3679 | #include <dirent.h> | |
3680 | ||
c4ea52a6 | 3681 | #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR) |
cfdc57af | 3682 | |
86a5659e JB |
3683 | int |
3684 | closedir (dirp) | |
3685 | register DIR *dirp; /* stream from opendir */ | |
3686 | { | |
cfdc57af RS |
3687 | int rtnval; |
3688 | ||
68c45bf0 | 3689 | rtnval = emacs_close (dirp->dd_fd); |
1b929d25 | 3690 | |
65aa44ac JB |
3691 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3692 | in one block. Why in the world are we freeing this ourselves | |
3693 | anyway? */ | |
3694 | #if ! (defined (sun) && defined (USG5_4)) | |
3695 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3696 | #endif | |
9ac0d9e0 | 3697 | xfree ((char *) dirp); |
cfdc57af RS |
3698 | |
3699 | return rtnval; | |
86a5659e | 3700 | } |
1db6401c | 3701 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3702 | #endif /* SYSV_SYSTEM_DIR */ |
3703 | ||
3704 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3705 | ||
3706 | DIR * | |
3707 | opendir (filename) | |
3708 | char *filename; /* name of directory */ | |
3709 | { | |
3710 | register DIR *dirp; /* -> malloc'ed storage */ | |
3711 | register int fd; /* file descriptor for read */ | |
3712 | struct stat sbuf; /* result of fstat */ | |
3713 | ||
68c45bf0 | 3714 | fd = emacs_open (filename, O_RDONLY, 0); |
86a5659e JB |
3715 | if (fd < 0) |
3716 | return 0; | |
3717 | ||
9ac0d9e0 | 3718 | BLOCK_INPUT; |
86a5659e JB |
3719 | if (fstat (fd, &sbuf) < 0 |
3720 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
7f77dbe3 | 3721 | || (dirp = (DIR *) xmalloc (sizeof (DIR))) == 0) |
86a5659e | 3722 | { |
68c45bf0 | 3723 | emacs_close (fd); |
9ac0d9e0 | 3724 | UNBLOCK_INPUT; |
86a5659e JB |
3725 | return 0; /* bad luck today */ |
3726 | } | |
9ac0d9e0 | 3727 | UNBLOCK_INPUT; |
86a5659e JB |
3728 | |
3729 | dirp->dd_fd = fd; | |
3730 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3731 | ||
3732 | return dirp; | |
3733 | } | |
3734 | ||
3735 | void | |
3736 | closedir (dirp) | |
3737 | register DIR *dirp; /* stream from opendir */ | |
3738 | { | |
68c45bf0 | 3739 | emacs_close (dirp->dd_fd); |
9ac0d9e0 | 3740 | xfree ((char *) dirp); |
86a5659e JB |
3741 | } |
3742 | ||
3743 | ||
3744 | #ifndef VMS | |
3745 | #define DIRSIZ 14 | |
3746 | struct olddir | |
3747 | { | |
3748 | ino_t od_ino; /* inode */ | |
3749 | char od_name[DIRSIZ]; /* filename */ | |
3750 | }; | |
3751 | #endif /* not VMS */ | |
3752 | ||
3753 | struct direct dir_static; /* simulated directory contents */ | |
3754 | ||
3755 | /* ARGUSED */ | |
3756 | struct direct * | |
3757 | readdir (dirp) | |
3758 | register DIR *dirp; /* stream from opendir */ | |
3759 | { | |
3760 | #ifndef VMS | |
3761 | register struct olddir *dp; /* -> directory data */ | |
3762 | #else /* VMS */ | |
3763 | register struct dir$_name *dp; /* -> directory data */ | |
3764 | register struct dir$_version *dv; /* -> version data */ | |
3765 | #endif /* VMS */ | |
3766 | ||
3767 | for (; ;) | |
3768 | { | |
3769 | if (dirp->dd_loc >= dirp->dd_size) | |
3770 | dirp->dd_loc = dirp->dd_size = 0; | |
3771 | ||
3772 | if (dirp->dd_size == 0 /* refill buffer */ | |
68c45bf0 | 3773 | && (dirp->dd_size = emacs_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) |
86a5659e JB |
3774 | return 0; |
3775 | ||
3776 | #ifndef VMS | |
3777 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3778 | dirp->dd_loc += sizeof (struct olddir); | |
3779 | ||
3780 | if (dp->od_ino != 0) /* not deleted entry */ | |
3781 | { | |
3782 | dir_static.d_ino = dp->od_ino; | |
3783 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3784 | dir_static.d_name[DIRSIZ] = '\0'; | |
3785 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3786 | dir_static.d_reclen = sizeof (struct direct) | |
3787 | - MAXNAMLEN + 3 | |
3788 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3789 | return &dir_static; /* -> simulated structure */ | |
3790 | } | |
3791 | #else /* VMS */ | |
3792 | dp = (struct dir$_name *) dirp->dd_buf; | |
3793 | if (dirp->dd_loc == 0) | |
3794 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3795 | : dp->dir$b_namecount; | |
3796 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3797 | dir_static.d_ino = dv->dir$w_fid_num; | |
3798 | dir_static.d_namlen = dp->dir$b_namecount; | |
3799 | dir_static.d_reclen = sizeof (struct direct) | |
3800 | - MAXNAMLEN + 3 | |
3801 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3802 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3803 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3804 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3805 | return &dir_static; | |
3806 | #endif /* VMS */ | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | #ifdef VMS | |
3811 | /* readdirver is just like readdir except it returns all versions of a file | |
3812 | as separate entries. */ | |
3813 | ||
3814 | /* ARGUSED */ | |
3815 | struct direct * | |
3816 | readdirver (dirp) | |
3817 | register DIR *dirp; /* stream from opendir */ | |
3818 | { | |
3819 | register struct dir$_name *dp; /* -> directory data */ | |
3820 | register struct dir$_version *dv; /* -> version data */ | |
3821 | ||
3822 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3823 | dirp->dd_loc = dirp->dd_size = 0; | |
3824 | ||
3825 | if (dirp->dd_size == 0 /* refill buffer */ | |
3826 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3827 | return 0; | |
3828 | ||
3829 | dp = (struct dir$_name *) dirp->dd_buf; | |
3830 | if (dirp->dd_loc == 0) | |
3831 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3832 | : dp->dir$b_namecount; | |
3833 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3834 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3835 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3836 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3837 | dir_static.d_ino = dv->dir$w_fid_num; | |
3838 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3839 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3840 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3841 | return &dir_static; | |
3842 | } | |
3843 | ||
3844 | #endif /* VMS */ | |
3845 | ||
3846 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3847 | |
3848 | \f | |
53ea491a | 3849 | int |
061ea326 | 3850 | set_file_times (filename, atime, mtime) |
8c2ba7de | 3851 | const char *filename; |
53ea491a KH |
3852 | EMACS_TIME atime, mtime; |
3853 | { | |
3854 | #ifdef HAVE_UTIMES | |
3855 | struct timeval tv[2]; | |
3856 | tv[0] = atime; | |
3857 | tv[1] = mtime; | |
8334eb21 RS |
3858 | return utimes (filename, tv); |
3859 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3860 | struct utimbuf utb; |
3861 | utb.actime = EMACS_SECS (atime); | |
3862 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3863 | return utime (filename, &utb); |
3864 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3865 | } |
3866 | \f | |
23524fb9 JB |
3867 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3868 | ||
3869 | #ifndef HAVE_MKDIR | |
3870 | /* | |
3871 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3872 | * | |
3873 | * If you want it, it's yours. All I ask in return is that if you | |
3874 | * figure out how to do this in a Bourne Shell script you send me | |
3875 | * a copy. | |
3876 | * sdcsvax!rmr or rmr@uscd | |
3877 | * | |
3878 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3879 | * subroutine. 11Mar86; hoptoad!gnu | |
3880 | * | |
3881 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3882 | * subroutine didn't return EEXIST. It does now. | |
3883 | */ | |
3884 | ||
3885 | /* | |
3886 | * Make a directory. | |
3887 | */ | |
f3892946 RS |
3888 | #ifdef MKDIR_PROTOTYPE |
3889 | MKDIR_PROTOTYPE | |
3890 | #else | |
23524fb9 JB |
3891 | int |
3892 | mkdir (dpath, dmode) | |
3893 | char *dpath; | |
3894 | int dmode; | |
f3892946 | 3895 | #endif |
23524fb9 | 3896 | { |
039f26a4 | 3897 | int cpid, status, fd; |
23524fb9 JB |
3898 | struct stat statbuf; |
3899 | ||
3900 | if (stat (dpath, &statbuf) == 0) | |
3901 | { | |
3902 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3903 | return -1; | |
3904 | } | |
3905 | ||
3906 | /* If stat fails for a reason other than non-existence, return error */ | |
3907 | if (errno != ENOENT) | |
3908 | return -1; | |
3909 | ||
039f26a4 | 3910 | synch_process_alive = 1; |
23524fb9 JB |
3911 | switch (cpid = fork ()) |
3912 | { | |
3913 | ||
039f26a4 | 3914 | case -1: /* Error in fork */ |
23524fb9 JB |
3915 | return (-1); /* Errno is set already */ |
3916 | ||
3917 | case 0: /* Child process */ | |
3918 | /* | |
3919 | * Cheap hack to set mode of new directory. Since this | |
3920 | * child process is going away anyway, we zap its umask. | |
3921 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3922 | * directory. Does anybody care? | |
3923 | */ | |
3924 | status = umask (0); /* Get current umask */ | |
3925 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
68c45bf0 | 3926 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3927 | if (fd >= 0) |
3928 | { | |
3929 | dup2 (fd, 0); | |
3930 | dup2 (fd, 1); | |
3931 | dup2 (fd, 2); | |
3932 | } | |
23524fb9 JB |
3933 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3934 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3935 | ||
3936 | default: /* Parent process */ | |
039f26a4 | 3937 | wait_for_termination (cpid); |
23524fb9 JB |
3938 | } |
3939 | ||
6b0824c9 JD |
3940 | if (synch_process_death != 0 || synch_process_retcode != 0 |
3941 | || synch_process_termsig != 0) | |
23524fb9 JB |
3942 | { |
3943 | errno = EIO; /* We don't know why, but */ | |
3944 | return -1; /* /bin/mkdir failed */ | |
3945 | } | |
3946 | ||
3947 | return 0; | |
3948 | } | |
3949 | #endif /* not HAVE_MKDIR */ | |
3950 | ||
3951 | #ifndef HAVE_RMDIR | |
3952 | int | |
3953 | rmdir (dpath) | |
3954 | char *dpath; | |
3955 | { | |
039f26a4 | 3956 | int cpid, status, fd; |
23524fb9 JB |
3957 | struct stat statbuf; |
3958 | ||
3959 | if (stat (dpath, &statbuf) != 0) | |
3960 | { | |
3961 | /* Stat just set errno. We don't have to */ | |
3962 | return -1; | |
3963 | } | |
3964 | ||
039f26a4 | 3965 | synch_process_alive = 1; |
23524fb9 JB |
3966 | switch (cpid = fork ()) |
3967 | { | |
3968 | ||
039f26a4 | 3969 | case -1: /* Error in fork */ |
23524fb9 JB |
3970 | return (-1); /* Errno is set already */ |
3971 | ||
3972 | case 0: /* Child process */ | |
68c45bf0 | 3973 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3974 | if (fd >= 0) |
3975 | { | |
3976 | dup2 (fd, 0); | |
3977 | dup2 (fd, 1); | |
3978 | dup2 (fd, 2); | |
3979 | } | |
f560db78 RS |
3980 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3981 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3982 | ||
207bdbdb | 3983 | default: /* Parent process */ |
f560db78 | 3984 | wait_for_termination (cpid); |
23524fb9 JB |
3985 | } |
3986 | ||
6b0824c9 JD |
3987 | if (synch_process_death != 0 || synch_process_retcode != 0 |
3988 | || synch_process_termsig != 0) | |
23524fb9 JB |
3989 | { |
3990 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3991 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3992 | } |
3993 | ||
3994 | return 0; | |
3995 | } | |
3996 | #endif /* !HAVE_RMDIR */ | |
3997 | ||
3998 | ||
86a5659e JB |
3999 | \f |
4000 | /* Functions for VMS */ | |
4001 | #ifdef VMS | |
86a5659e JB |
4002 | #include <acldef.h> |
4003 | #include <chpdef.h> | |
4004 | #include <jpidef.h> | |
4005 | ||
4006 | /* Return as a string the VMS error string pertaining to STATUS. | |
4007 | Reuses the same static buffer each time it is called. */ | |
4008 | ||
4009 | char * | |
4010 | vmserrstr (status) | |
4011 | int status; /* VMS status code */ | |
4012 | { | |
4013 | int bufadr[2]; | |
4014 | short len; | |
4015 | static char buf[257]; | |
4016 | ||
4017 | bufadr[0] = sizeof buf - 1; | |
4018 | bufadr[1] = (int) buf; | |
4019 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
4020 | return "untranslatable VMS error status"; | |
4021 | buf[len] = '\0'; | |
4022 | return buf; | |
4023 | } | |
4024 | ||
4025 | #ifdef access | |
4026 | #undef access | |
177c0ea7 | 4027 | |
86a5659e JB |
4028 | /* The following is necessary because 'access' emulation by VMS C (2.0) does |
4029 | * not work correctly. (It also doesn't work well in version 2.3.) | |
4030 | */ | |
4031 | ||
4032 | #ifdef VMS4_4 | |
4033 | ||
4034 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
4035 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
4036 | ||
4037 | typedef union { | |
4038 | struct { | |
4039 | unsigned short s_buflen; | |
4040 | unsigned short s_code; | |
4041 | char *s_bufadr; | |
4042 | unsigned short *s_retlenadr; | |
4043 | } s; | |
4044 | int end; | |
4045 | } item; | |
4046 | #define buflen s.s_buflen | |
4047 | #define code s.s_code | |
4048 | #define bufadr s.s_bufadr | |
4049 | #define retlenadr s.s_retlenadr | |
4050 | ||
4051 | #define R_OK 4 /* test for read permission */ | |
4052 | #define W_OK 2 /* test for write permission */ | |
4053 | #define X_OK 1 /* test for execute (search) permission */ | |
4054 | #define F_OK 0 /* test for presence of file */ | |
4055 | ||
4056 | int | |
4057 | sys_access (path, mode) | |
4058 | char *path; | |
4059 | int mode; | |
4060 | { | |
4061 | static char *user = NULL; | |
4062 | char dir_fn[512]; | |
4063 | ||
4064 | /* translate possible directory spec into .DIR file name, so brain-dead | |
4065 | * access can treat the directory like a file. */ | |
4066 | if (directory_file_name (path, dir_fn)) | |
4067 | path = dir_fn; | |
177c0ea7 | 4068 | |
86a5659e JB |
4069 | if (mode == F_OK) |
4070 | return access (path, mode); | |
4071 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
4072 | return -1; | |
4073 | { | |
4074 | int stat; | |
4075 | int flags; | |
4076 | int acces; | |
4077 | unsigned short int dummy; | |
4078 | item itemlst[3]; | |
4079 | static int constant = ACL$C_FILE; | |
4080 | DESCRIPTOR (path_desc, path); | |
4081 | DESCRIPTOR (user_desc, user); | |
177c0ea7 | 4082 | |
86a5659e JB |
4083 | flags = 0; |
4084 | acces = 0; | |
4085 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
4086 | return stat; | |
4087 | if (mode & R_OK) | |
4088 | acces |= CHP$M_READ; | |
4089 | if (mode & W_OK) | |
4090 | acces |= CHP$M_WRITE; | |
4091 | itemlst[0].buflen = sizeof (int); | |
4092 | itemlst[0].code = CHP$_FLAGS; | |
4093 | itemlst[0].bufadr = (char *) &flags; | |
4094 | itemlst[0].retlenadr = &dummy; | |
4095 | itemlst[1].buflen = sizeof (int); | |
4096 | itemlst[1].code = CHP$_ACCESS; | |
4097 | itemlst[1].bufadr = (char *) &acces; | |
4098 | itemlst[1].retlenadr = &dummy; | |
4099 | itemlst[2].end = CHP$_END; | |
4100 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
4101 | return stat == SS$_NORMAL ? 0 : -1; | |
4102 | } | |
4103 | } | |
4104 | ||
4105 | #else /* not VMS4_4 */ | |
4106 | ||
4107 | #include <prvdef.h> | |
fe03522b RS |
4108 | #define ACE$M_WRITE 2 |
4109 | #define ACE$C_KEYID 1 | |
86a5659e JB |
4110 | |
4111 | static unsigned short memid, grpid; | |
4112 | static unsigned int uic; | |
4113 | ||
4114 | /* Called from init_sys_modes, so it happens not very often | |
4115 | but at least each time Emacs is loaded. */ | |
dfcf069d | 4116 | void |
86a5659e JB |
4117 | sys_access_reinit () |
4118 | { | |
4119 | uic = 0; | |
4120 | } | |
4121 | ||
4122 | int | |
4123 | sys_access (filename, type) | |
4124 | char * filename; | |
4125 | int type; | |
4126 | { | |
4127 | struct FAB fab; | |
4128 | struct XABPRO xab; | |
4129 | int status, size, i, typecode, acl_controlled; | |
4130 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
4131 | union prvdef prvmask; | |
4132 | ||
4133 | /* Get UIC and GRP values for protection checking. */ | |
4134 | if (uic == 0) | |
4135 | { | |
4136 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
4137 | if (! (status & 1)) | |
4138 | return -1; | |
4139 | memid = uic & 0xFFFF; | |
4140 | grpid = uic >> 16; | |
4141 | } | |
4142 | ||
fe03522b | 4143 | if (type != 2) /* not checking write access */ |
86a5659e JB |
4144 | return access (filename, type); |
4145 | ||
4146 | /* Check write protection. */ | |
177c0ea7 | 4147 | |
fe03522b | 4148 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 4149 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
4150 | |
4151 | /* Find privilege bits */ | |
986ffb24 | 4152 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
4153 | if (! (status & 1)) |
4154 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
4155 | if (CHECKPRIV (PRV$V_BYPASS)) | |
4156 | return 0; /* BYPASS enabled */ | |
4157 | fab = cc$rms_fab; | |
4158 | fab.fab$b_fac = FAB$M_GET; | |
4159 | fab.fab$l_fna = filename; | |
4160 | fab.fab$b_fns = strlen (filename); | |
4161 | fab.fab$l_xab = &xab; | |
4162 | xab = cc$rms_xabpro; | |
4163 | xab.xab$l_aclbuf = aclbuf; | |
4164 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 4165 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
4166 | if (! (status & 1)) |
4167 | return -1; | |
986ffb24 | 4168 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 4169 | /* Check system access */ |
ea5a0917 | 4170 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
4171 | return 0; |
4172 | /* Check ACL entries, if any */ | |
4173 | acl_controlled = 0; | |
4174 | if (xab.xab$w_acllen > 0) | |
4175 | { | |
4176 | aclptr = aclbuf; | |
4177 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
4178 | while (*aclptr && aclptr < aclend) | |
4179 | { | |
4180 | size = (*aclptr & 0xff) / 4; | |
4181 | typecode = (*aclptr >> 8) & 0xff; | |
4182 | if (typecode == ACE$C_KEYID) | |
4183 | for (i = size - 1; i > 1; i--) | |
4184 | if (aclptr[i] == uic) | |
4185 | { | |
4186 | acl_controlled = 1; | |
4187 | if (aclptr[1] & ACE$M_WRITE) | |
4188 | return 0; /* Write access through ACL */ | |
4189 | } | |
4190 | aclptr = &aclptr[size]; | |
4191 | } | |
4192 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
4193 | return -1; | |
4194 | } | |
4195 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 4196 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 4197 | return 0; |
ea5a0917 | 4198 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 4199 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
4200 | return 0; /* Group writable */ |
4201 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 4202 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 4203 | return 0; /* Owner writable */ |
86a5659e | 4204 | |
ea5a0917 | 4205 | return -1; /* Not writable */ |
86a5659e JB |
4206 | } |
4207 | #endif /* not VMS4_4 */ | |
4208 | #endif /* access */ | |
177c0ea7 | 4209 | |
86a5659e JB |
4210 | static char vtbuf[NAM$C_MAXRSS+1]; |
4211 | ||
4212 | /* translate a vms file spec to a unix path */ | |
4213 | char * | |
4214 | sys_translate_vms (vfile) | |
4215 | char * vfile; | |
4216 | { | |
4217 | char * p; | |
4218 | char * targ; | |
4219 | ||
4220 | if (!vfile) | |
4221 | return 0; | |
4222 | ||
4223 | targ = vtbuf; | |
4224 | ||
4225 | /* leading device or logical name is a root directory */ | |
4226 | if (p = strchr (vfile, ':')) | |
4227 | { | |
4228 | *targ++ = '/'; | |
4229 | while (vfile < p) | |
4230 | *targ++ = *vfile++; | |
4231 | vfile++; | |
4232 | *targ++ = '/'; | |
4233 | } | |
4234 | p = vfile; | |
4235 | if (*p == '[' || *p == '<') | |
4236 | { | |
4237 | while (*++vfile != *p + 2) | |
4238 | switch (*vfile) | |
4239 | { | |
4240 | case '.': | |
4241 | if (vfile[-1] == *p) | |
4242 | *targ++ = '.'; | |
4243 | *targ++ = '/'; | |
4244 | break; | |
4245 | ||
4246 | case '-': | |
4247 | *targ++ = '.'; | |
4248 | *targ++ = '.'; | |
4249 | break; | |
177c0ea7 | 4250 | |
86a5659e JB |
4251 | default: |
4252 | *targ++ = *vfile; | |
4253 | break; | |
4254 | } | |
4255 | vfile++; | |
4256 | *targ++ = '/'; | |
4257 | } | |
4258 | while (*vfile) | |
4259 | *targ++ = *vfile++; | |
4260 | ||
4261 | return vtbuf; | |
4262 | } | |
4263 | ||
4264 | static char utbuf[NAM$C_MAXRSS+1]; | |
4265 | ||
4266 | /* translate a unix path to a VMS file spec */ | |
4267 | char * | |
4268 | sys_translate_unix (ufile) | |
4269 | char * ufile; | |
4270 | { | |
4271 | int slash_seen = 0; | |
4272 | char *p; | |
4273 | char * targ; | |
4274 | ||
4275 | if (!ufile) | |
4276 | return 0; | |
4277 | ||
4278 | targ = utbuf; | |
4279 | ||
4280 | if (*ufile == '/') | |
4281 | { | |
4282 | ufile++; | |
4283 | } | |
4284 | ||
4285 | while (*ufile) | |
4286 | { | |
4287 | switch (*ufile) | |
4288 | { | |
4289 | case '/': | |
4290 | if (slash_seen) | |
4291 | if (index (&ufile[1], '/')) | |
4292 | *targ++ = '.'; | |
4293 | else | |
4294 | *targ++ = ']'; | |
4295 | else | |
4296 | { | |
4297 | *targ++ = ':'; | |
4298 | if (index (&ufile[1], '/')) | |
4299 | *targ++ = '['; | |
4300 | slash_seen = 1; | |
4301 | } | |
4302 | break; | |
4303 | ||
4304 | case '.': | |
4305 | if (strncmp (ufile, "./", 2) == 0) | |
4306 | { | |
4307 | if (!slash_seen) | |
4308 | { | |
4309 | *targ++ = '['; | |
4310 | slash_seen = 1; | |
4311 | } | |
4312 | ufile++; /* skip the dot */ | |
4313 | if (index (&ufile[1], '/')) | |
4314 | *targ++ = '.'; | |
4315 | else | |
4316 | *targ++ = ']'; | |
4317 | } | |
4318 | else if (strncmp (ufile, "../", 3) == 0) | |
4319 | { | |
4320 | if (!slash_seen) | |
4321 | { | |
4322 | *targ++ = '['; | |
4323 | slash_seen = 1; | |
4324 | } | |
4325 | *targ++ = '-'; | |
4326 | ufile += 2; /* skip the dots */ | |
4327 | if (index (&ufile[1], '/')) | |
4328 | *targ++ = '.'; | |
4329 | else | |
4330 | *targ++ = ']'; | |
4331 | } | |
4332 | else | |
4333 | *targ++ = *ufile; | |
4334 | break; | |
4335 | ||
4336 | default: | |
4337 | *targ++ = *ufile; | |
4338 | break; | |
4339 | } | |
4340 | ufile++; | |
4341 | } | |
4342 | *targ = '\0'; | |
177c0ea7 | 4343 | |
86a5659e JB |
4344 | return utbuf; |
4345 | } | |
4346 | ||
4347 | char * | |
4348 | getwd (pathname) | |
4349 | char *pathname; | |
4350 | { | |
f4a7e5bd | 4351 | char *ptr, *val; |
210b2b4f | 4352 | extern char *getcwd (); |
86a5659e | 4353 | |
210b2b4f JB |
4354 | #define MAXPATHLEN 1024 |
4355 | ||
9ac0d9e0 | 4356 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4357 | val = getcwd (ptr, MAXPATHLEN); |
4358 | if (val == 0) | |
4359 | { | |
4360 | xfree (ptr); | |
4361 | return val; | |
4362 | } | |
210b2b4f | 4363 | strcpy (pathname, ptr); |
9ac0d9e0 | 4364 | xfree (ptr); |
177c0ea7 | 4365 | |
210b2b4f | 4366 | return pathname; |
86a5659e JB |
4367 | } |
4368 | ||
dfcf069d | 4369 | int |
86a5659e JB |
4370 | getppid () |
4371 | { | |
4372 | long item_code = JPI$_OWNER; | |
4373 | unsigned long parent_id; | |
4374 | int status; | |
4375 | ||
4376 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4377 | { | |
4378 | errno = EVMSERR; | |
4379 | vaxc$errno = status; | |
4380 | return -1; | |
4381 | } | |
4382 | return parent_id; | |
4383 | } | |
4384 | ||
4385 | #undef getuid | |
4386 | unsigned | |
4387 | sys_getuid () | |
4388 | { | |
4389 | return (getgid () << 16) | getuid (); | |
4390 | } | |
4391 | ||
68c45bf0 | 4392 | #undef read |
86a5659e JB |
4393 | int |
4394 | sys_read (fildes, buf, nbyte) | |
4395 | int fildes; | |
4396 | char *buf; | |
4397 | unsigned int nbyte; | |
4398 | { | |
4399 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4400 | } | |
4401 | ||
4402 | #if 0 | |
4403 | int | |
4404 | sys_write (fildes, buf, nbyte) | |
4405 | int fildes; | |
4406 | char *buf; | |
4407 | unsigned int nbyte; | |
4408 | { | |
4409 | register int nwrote, rtnval = 0; | |
4410 | ||
4411 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4412 | nbyte -= nwrote; | |
4413 | buf += nwrote; | |
4414 | rtnval += nwrote; | |
4415 | } | |
4416 | if (nwrote < 0) | |
4417 | return rtnval ? rtnval : -1; | |
4418 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4419 | return rtnval ? rtnval : -1; | |
4420 | return (rtnval + nwrote); | |
4421 | } | |
4422 | #endif /* 0 */ | |
4423 | ||
4424 | /* | |
4425 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4426 | * end with a newline (carriage return) character, and if they | |
4427 | * don't it adds one (nice of it isn't it!) | |
4428 | * | |
4429 | * Thus we do this stupidity below. | |
4430 | */ | |
4431 | ||
68c45bf0 | 4432 | #undef write |
86a5659e JB |
4433 | int |
4434 | sys_write (fildes, buf, nbytes) | |
4435 | int fildes; | |
4436 | char *buf; | |
4437 | unsigned int nbytes; | |
4438 | { | |
4439 | register char *p; | |
4440 | register char *e; | |
23b0668c JB |
4441 | int sum = 0; |
4442 | struct stat st; | |
4443 | ||
4444 | fstat (fildes, &st); | |
86a5659e | 4445 | p = buf; |
86a5659e JB |
4446 | while (nbytes > 0) |
4447 | { | |
23b0668c JB |
4448 | int len, retval; |
4449 | ||
4450 | /* Handle fixed-length files with carriage control. */ | |
4451 | if (st.st_fab_rfm == FAB$C_FIX | |
4452 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4453 | { | |
4454 | len = st.st_fab_mrs; | |
4455 | retval = write (fildes, p, min (len, nbytes)); | |
4456 | if (retval != len) | |
4457 | return -1; | |
4458 | retval++; /* This skips the implied carriage control */ | |
4459 | } | |
4460 | else | |
4461 | { | |
4462 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4463 | while (*e != '\n' && e > p) e--; | |
4464 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4465 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4466 | len = e + 1 - p; | |
4467 | retval = write (fildes, p, len); | |
4468 | if (retval != len) | |
4469 | return -1; | |
4470 | } | |
4471 | p += retval; | |
4472 | sum += retval; | |
86a5659e JB |
4473 | nbytes -= retval; |
4474 | } | |
4475 | return sum; | |
4476 | } | |
4477 | ||
4478 | /* Create file NEW copying its attributes from file OLD. If | |
4479 | OLD is 0 or does not exist, create based on the value of | |
4480 | vms_stmlf_recfm. */ | |
4481 | ||
4482 | /* Protection value the file should ultimately have. | |
4483 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4484 | static unsigned short int fab_final_pro; | |
4485 | ||
4486 | int | |
4487 | creat_copy_attrs (old, new) | |
4488 | char *old, *new; | |
4489 | { | |
4490 | struct FAB fab = cc$rms_fab; | |
4491 | struct XABPRO xabpro; | |
4492 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4493 | extern int vms_stmlf_recfm; | |
4494 | ||
4495 | if (old) | |
4496 | { | |
4497 | fab.fab$b_fac = FAB$M_GET; | |
4498 | fab.fab$l_fna = old; | |
4499 | fab.fab$b_fns = strlen (old); | |
4500 | fab.fab$l_xab = (char *) &xabpro; | |
4501 | xabpro = cc$rms_xabpro; | |
4502 | xabpro.xab$l_aclbuf = aclbuf; | |
4503 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4504 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4505 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4506 | { |
986ffb24 | 4507 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4508 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4509 | if (xabpro.xab$w_acllen > 0) | |
4510 | { | |
4511 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4512 | /* If the acl buffer was too short, redo open with longer one. | |
4513 | Wouldn't need to do this if there were some system imposed | |
4514 | limit on the size of an ACL, but I can't find any such. */ | |
4515 | { | |
4516 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4517 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4518 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4519 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4520 | else |
4521 | old = 0; | |
4522 | } | |
4523 | } | |
4524 | else | |
4525 | xabpro.xab$l_aclbuf = 0; | |
4526 | } | |
4527 | else | |
4528 | old = 0; | |
4529 | } | |
4530 | fab.fab$l_fna = new; | |
4531 | fab.fab$b_fns = strlen (new); | |
4532 | if (!old) | |
4533 | { | |
4534 | fab.fab$l_xab = 0; | |
4535 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4536 | fab.fab$b_rat = FAB$M_CR; | |
4537 | } | |
4538 | ||
4539 | /* Set the file protections such that we will be able to manipulate | |
4540 | this file. Once we are done writing and renaming it, we will set | |
4541 | the protections back. */ | |
4542 | if (old) | |
4543 | fab_final_pro = xabpro.xab$w_pro; | |
4544 | else | |
986ffb24 | 4545 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4546 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4547 | ||
4548 | /* Create the new file with either default attrs or attrs copied | |
4549 | from old file. */ | |
4550 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4551 | return -1; | |
986ffb24 | 4552 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4553 | /* As this is a "replacement" for creat, return a file descriptor |
4554 | opened for writing. */ | |
4555 | return open (new, O_WRONLY); | |
4556 | } | |
4557 | ||
4558 | #ifdef creat | |
4559 | #undef creat | |
4560 | #include <varargs.h> | |
4561 | #ifdef __GNUC__ | |
4562 | #ifndef va_count | |
4563 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4564 | #endif | |
4565 | #endif | |
4566 | ||
dfcf069d | 4567 | int |
86a5659e JB |
4568 | sys_creat (va_alist) |
4569 | va_dcl | |
4570 | { | |
eb8c3be9 | 4571 | va_list list_incrementer; |
86a5659e JB |
4572 | char *name; |
4573 | int mode; | |
4574 | int rfd; /* related file descriptor */ | |
4575 | int fd; /* Our new file descriptor */ | |
4576 | int count; | |
4577 | struct stat st_buf; | |
4578 | char rfm[12]; | |
4579 | char rat[15]; | |
4580 | char mrs[13]; | |
4581 | char fsz[13]; | |
4582 | extern int vms_stmlf_recfm; | |
4583 | ||
4584 | va_count (count); | |
eb8c3be9 JB |
4585 | va_start (list_incrementer); |
4586 | name = va_arg (list_incrementer, char *); | |
4587 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4588 | if (count > 2) |
eb8c3be9 JB |
4589 | rfd = va_arg (list_incrementer, int); |
4590 | va_end (list_incrementer); | |
86a5659e JB |
4591 | if (count > 2) |
4592 | { | |
4593 | /* Use information from the related file descriptor to set record | |
4594 | format of the newly created file. */ | |
4595 | fstat (rfd, &st_buf); | |
4596 | switch (st_buf.st_fab_rfm) | |
4597 | { | |
4598 | case FAB$C_FIX: | |
4599 | strcpy (rfm, "rfm = fix"); | |
4600 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4601 | strcpy (rat, "rat = "); | |
4602 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4603 | strcat (rat, "cr"); | |
4604 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4605 | strcat (rat, "ftn"); | |
4606 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4607 | strcat (rat, "prn"); | |
4608 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4609 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4610 | strcat (rat, ", blk"); | |
4611 | else | |
4612 | strcat (rat, "blk"); | |
4613 | return creat (name, 0, rfm, rat, mrs); | |
4614 | ||
4615 | case FAB$C_VFC: | |
4616 | strcpy (rfm, "rfm = vfc"); | |
4617 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4618 | strcpy (rat, "rat = "); | |
4619 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4620 | strcat (rat, "cr"); | |
4621 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4622 | strcat (rat, "ftn"); | |
4623 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4624 | strcat (rat, "prn"); | |
4625 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4626 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4627 | strcat (rat, ", blk"); | |
4628 | else | |
4629 | strcat (rat, "blk"); | |
4630 | return creat (name, 0, rfm, rat, fsz); | |
4631 | ||
4632 | case FAB$C_STM: | |
4633 | strcpy (rfm, "rfm = stm"); | |
4634 | break; | |
4635 | ||
4636 | case FAB$C_STMCR: | |
4637 | strcpy (rfm, "rfm = stmcr"); | |
4638 | break; | |
4639 | ||
4640 | case FAB$C_STMLF: | |
4641 | strcpy (rfm, "rfm = stmlf"); | |
4642 | break; | |
4643 | ||
4644 | case FAB$C_UDF: | |
4645 | strcpy (rfm, "rfm = udf"); | |
4646 | break; | |
4647 | ||
4648 | case FAB$C_VAR: | |
4649 | strcpy (rfm, "rfm = var"); | |
4650 | break; | |
4651 | } | |
4652 | strcpy (rat, "rat = "); | |
4653 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4654 | strcat (rat, "cr"); | |
4655 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4656 | strcat (rat, "ftn"); | |
4657 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4658 | strcat (rat, "prn"); | |
4659 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4660 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4661 | strcat (rat, ", blk"); | |
4662 | else | |
4663 | strcat (rat, "blk"); | |
4664 | } | |
4665 | else | |
4666 | { | |
4667 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4668 | strcpy (rat, "rat=cr"); | |
4669 | } | |
4670 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4671 | mode 0 to get the user's default protection. */ | |
4672 | fd = creat (name, 0, rfm, rat); | |
4673 | if (fd < 0 && errno == EEXIST) | |
4674 | { | |
4675 | if (unlink (name) < 0) | |
4676 | report_file_error ("delete", build_string (name)); | |
4677 | fd = creat (name, 0, rfm, rat); | |
4678 | } | |
4679 | return fd; | |
4680 | } | |
4681 | #endif /* creat */ | |
4682 | ||
4683 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
dfcf069d | 4684 | int |
86a5659e JB |
4685 | sys_fwrite (ptr, size, num, fp) |
4686 | register char * ptr; | |
4687 | FILE * fp; | |
4688 | { | |
4689 | register int tot = num * size; | |
4690 | ||
4691 | while (tot--) | |
4692 | fputc (*ptr++, fp); | |
dfcf069d | 4693 | return num; |
86a5659e JB |
4694 | } |
4695 | ||
4696 | /* | |
4697 | * The VMS C library routine creat actually creates a new version of an | |
4698 | * existing file rather than truncating the old version. There are times | |
4699 | * when this is not the desired behavior, for instance, when writing an | |
4700 | * auto save file (you only want one version), or when you don't have | |
4701 | * write permission in the directory containing the file (but the file | |
177c0ea7 | 4702 | * itself is writable). Hence this routine, which is equivalent to |
86a5659e JB |
4703 | * "close (creat (fn, 0));" on Unix if fn already exists. |
4704 | */ | |
4705 | int | |
4706 | vms_truncate (fn) | |
4707 | char *fn; | |
4708 | { | |
4709 | struct FAB xfab = cc$rms_fab; | |
4710 | struct RAB xrab = cc$rms_rab; | |
4711 | int status; | |
4712 | ||
4713 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4714 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4715 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4716 | xfab.fab$l_fna = fn; | |
4717 | xfab.fab$b_fns = strlen (fn); | |
4718 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4719 | xfab.fab$b_dns = 2; | |
4720 | xrab.rab$l_fab = &xfab; | |
4721 | ||
4722 | /* This gibberish opens the file, positions to the first record, and | |
4723 | deletes all records from there until the end of file. */ | |
986ffb24 | 4724 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4725 | { |
986ffb24 JB |
4726 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4727 | (SYS$FIND (&xrab) & 01) == 01 && | |
4728 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4729 | status = 0; |
4730 | else | |
4731 | status = -1; | |
4732 | } | |
4733 | else | |
4734 | status = -1; | |
986ffb24 | 4735 | SYS$CLOSE (&xfab); |
86a5659e JB |
4736 | return status; |
4737 | } | |
4738 | ||
4739 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4740 | SYSPRV or a readable SYSUAF.DAT. */ | |
4741 | ||
4742 | #ifdef READ_SYSUAF | |
4743 | /* | |
4744 | * getuaf.c | |
4745 | * | |
4746 | * Routine to read the VMS User Authorization File and return | |
4747 | * a specific user's record. | |
4748 | */ | |
4749 | ||
4750 | static struct UAF retuaf; | |
4751 | ||
4752 | struct UAF * | |
4753 | get_uaf_name (uname) | |
4754 | char * uname; | |
4755 | { | |
4756 | register status; | |
4757 | struct FAB uaf_fab; | |
4758 | struct RAB uaf_rab; | |
177c0ea7 | 4759 | |
86a5659e JB |
4760 | uaf_fab = cc$rms_fab; |
4761 | uaf_rab = cc$rms_rab; | |
4762 | /* initialize fab fields */ | |
4763 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4764 | uaf_fab.fab$b_fns = 21; | |
4765 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4766 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4767 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4768 | /* initialize rab fields */ | |
4769 | uaf_rab.rab$l_fab = &uaf_fab; | |
4770 | /* open the User Authorization File */ | |
986ffb24 | 4771 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4772 | if (!(status&1)) |
4773 | { | |
4774 | errno = EVMSERR; | |
4775 | vaxc$errno = status; | |
4776 | return 0; | |
4777 | } | |
986ffb24 | 4778 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4779 | if (!(status&1)) |
4780 | { | |
4781 | errno = EVMSERR; | |
4782 | vaxc$errno = status; | |
4783 | return 0; | |
4784 | } | |
4785 | /* read the requested record - index is in uname */ | |
4786 | uaf_rab.rab$l_kbf = uname; | |
4787 | uaf_rab.rab$b_ksz = strlen (uname); | |
4788 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4789 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4790 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4791 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4792 | if (!(status&1)) |
4793 | { | |
4794 | errno = EVMSERR; | |
4795 | vaxc$errno = status; | |
4796 | return 0; | |
4797 | } | |
4798 | /* close the User Authorization File */ | |
986ffb24 | 4799 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4800 | if (!(status&1)) |
4801 | { | |
4802 | errno = EVMSERR; | |
4803 | vaxc$errno = status; | |
4804 | return 0; | |
4805 | } | |
986ffb24 | 4806 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4807 | if (!(status&1)) |
4808 | { | |
4809 | errno = EVMSERR; | |
4810 | vaxc$errno = status; | |
4811 | return 0; | |
4812 | } | |
4813 | return &retuaf; | |
4814 | } | |
4815 | ||
4816 | struct UAF * | |
4817 | get_uaf_uic (uic) | |
4818 | unsigned long uic; | |
4819 | { | |
4820 | register status; | |
4821 | struct FAB uaf_fab; | |
4822 | struct RAB uaf_rab; | |
177c0ea7 | 4823 | |
86a5659e JB |
4824 | uaf_fab = cc$rms_fab; |
4825 | uaf_rab = cc$rms_rab; | |
4826 | /* initialize fab fields */ | |
4827 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4828 | uaf_fab.fab$b_fns = 21; | |
4829 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4830 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4831 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4832 | /* initialize rab fields */ | |
4833 | uaf_rab.rab$l_fab = &uaf_fab; | |
4834 | /* open the User Authorization File */ | |
986ffb24 | 4835 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4836 | if (!(status&1)) |
4837 | { | |
4838 | errno = EVMSERR; | |
4839 | vaxc$errno = status; | |
4840 | return 0; | |
4841 | } | |
986ffb24 | 4842 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4843 | if (!(status&1)) |
4844 | { | |
4845 | errno = EVMSERR; | |
4846 | vaxc$errno = status; | |
4847 | return 0; | |
4848 | } | |
4849 | /* read the requested record - index is in uic */ | |
4850 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4851 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4852 | uaf_rab.rab$b_ksz = sizeof uic; | |
4853 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4854 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4855 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4856 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4857 | if (!(status&1)) |
4858 | { | |
4859 | errno = EVMSERR; | |
4860 | vaxc$errno = status; | |
4861 | return 0; | |
4862 | } | |
4863 | /* close the User Authorization File */ | |
986ffb24 | 4864 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4865 | if (!(status&1)) |
4866 | { | |
4867 | errno = EVMSERR; | |
4868 | vaxc$errno = status; | |
4869 | return 0; | |
4870 | } | |
986ffb24 | 4871 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4872 | if (!(status&1)) |
4873 | { | |
4874 | errno = EVMSERR; | |
4875 | vaxc$errno = status; | |
4876 | return 0; | |
4877 | } | |
4878 | return &retuaf; | |
4879 | } | |
4880 | ||
4881 | static struct passwd retpw; | |
4882 | ||
4883 | struct passwd * | |
4884 | cnv_uaf_pw (up) | |
4885 | struct UAF * up; | |
4886 | { | |
4887 | char * ptr; | |
4888 | ||
4889 | /* copy these out first because if the username is 32 chars, the next | |
4890 | section will overwrite the first byte of the UIC */ | |
4891 | retpw.pw_uid = up->uaf$w_mem; | |
4892 | retpw.pw_gid = up->uaf$w_grp; | |
4893 | ||
ea5a0917 | 4894 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4895 | byte beyond the end of the field, but what the heck... */ |
4896 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4897 | while (ptr[-1] == ' ') | |
4898 | ptr--; | |
4899 | *ptr = '\0'; | |
4900 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4901 | ||
4902 | /* the rest of these are counted ascii strings */ | |
4903 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4904 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4905 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4906 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4907 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4908 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4909 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4910 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4911 | ||
4912 | return &retpw; | |
4913 | } | |
4914 | #else /* not READ_SYSUAF */ | |
4915 | static struct passwd retpw; | |
4916 | #endif /* not READ_SYSUAF */ | |
4917 | ||
4918 | struct passwd * | |
4919 | getpwnam (name) | |
4920 | char * name; | |
4921 | { | |
4922 | #ifdef READ_SYSUAF | |
4923 | struct UAF *up; | |
4924 | #else | |
4925 | char * user; | |
4926 | char * dir; | |
4927 | unsigned char * full; | |
4928 | #endif /* READ_SYSUAF */ | |
4929 | char *ptr = name; | |
4930 | ||
4931 | while (*ptr) | |
4932 | { | |
4933 | if ('a' <= *ptr && *ptr <= 'z') | |
4934 | *ptr -= 040; | |
4935 | ptr++; | |
4936 | } | |
4937 | #ifdef READ_SYSUAF | |
4938 | if (!(up = get_uaf_name (name))) | |
4939 | return 0; | |
4940 | return cnv_uaf_pw (up); | |
4941 | #else | |
4942 | if (strcmp (name, getenv ("USER")) == 0) | |
4943 | { | |
4944 | retpw.pw_uid = getuid (); | |
4945 | retpw.pw_gid = getgid (); | |
4946 | strcpy (retpw.pw_name, name); | |
4947 | if (full = egetenv ("FULLNAME")) | |
4948 | strcpy (retpw.pw_gecos, full); | |
4949 | else | |
4950 | *retpw.pw_gecos = '\0'; | |
4951 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4952 | *retpw.pw_shell = '\0'; | |
4953 | return &retpw; | |
4954 | } | |
4955 | else | |
4956 | return 0; | |
4957 | #endif /* not READ_SYSUAF */ | |
4958 | } | |
4959 | ||
4960 | struct passwd * | |
4961 | getpwuid (uid) | |
4962 | unsigned long uid; | |
4963 | { | |
4964 | #ifdef READ_SYSUAF | |
4965 | struct UAF * up; | |
4966 | ||
4967 | if (!(up = get_uaf_uic (uid))) | |
4968 | return 0; | |
4969 | return cnv_uaf_pw (up); | |
4970 | #else | |
4971 | if (uid == sys_getuid ()) | |
4972 | return getpwnam (egetenv ("USER")); | |
4973 | else | |
4974 | return 0; | |
4975 | #endif /* not READ_SYSUAF */ | |
4976 | } | |
4977 | ||
4978 | /* return total address space available to the current process. This is | |
4979 | the sum of the current p0 size, p1 size and free page table entries | |
4980 | available. */ | |
dfcf069d | 4981 | int |
86a5659e JB |
4982 | vlimit () |
4983 | { | |
4984 | int item_code; | |
4985 | unsigned long free_pages; | |
4986 | unsigned long frep0va; | |
4987 | unsigned long frep1va; | |
4988 | register status; | |
4989 | ||
4990 | item_code = JPI$_FREPTECNT; | |
4991 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4992 | { | |
4993 | errno = EVMSERR; | |
4994 | vaxc$errno = status; | |
4995 | return -1; | |
4996 | } | |
4997 | free_pages *= 512; | |
4998 | ||
4999 | item_code = JPI$_FREP0VA; | |
5000 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
5001 | { | |
5002 | errno = EVMSERR; | |
5003 | vaxc$errno = status; | |
5004 | return -1; | |
5005 | } | |
5006 | item_code = JPI$_FREP1VA; | |
5007 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
5008 | { | |
5009 | errno = EVMSERR; | |
5010 | vaxc$errno = status; | |
5011 | return -1; | |
5012 | } | |
5013 | ||
5014 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
5015 | } | |
5016 | ||
dfcf069d | 5017 | int |
86a5659e JB |
5018 | define_logical_name (varname, string) |
5019 | char *varname; | |
5020 | char *string; | |
5021 | { | |
5022 | struct dsc$descriptor_s strdsc = | |
5023 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
5024 | struct dsc$descriptor_s envdsc = | |
5025 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
5026 | struct dsc$descriptor_s lnmdsc = | |
5027 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
5028 | ||
5029 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
5030 | } | |
5031 | ||
dfcf069d | 5032 | int |
86a5659e JB |
5033 | delete_logical_name (varname) |
5034 | char *varname; | |
5035 | { | |
5036 | struct dsc$descriptor_s envdsc = | |
5037 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
5038 | struct dsc$descriptor_s lnmdsc = | |
5039 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
5040 | ||
5041 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
5042 | } | |
5043 | ||
dfcf069d | 5044 | int |
86a5659e | 5045 | ulimit () |
dfcf069d AS |
5046 | { |
5047 | return 0; | |
5048 | } | |
86a5659e | 5049 | |
dfcf069d | 5050 | int |
86a5659e | 5051 | setpgrp () |
dfcf069d AS |
5052 | { |
5053 | return 0; | |
5054 | } | |
86a5659e | 5055 | |
dfcf069d | 5056 | int |
86a5659e JB |
5057 | execvp () |
5058 | { | |
5059 | error ("execvp system call not implemented"); | |
dfcf069d | 5060 | return -1; |
86a5659e JB |
5061 | } |
5062 | ||
5063 | int | |
5064 | rename (from, to) | |
5065 | char *from, *to; | |
5066 | { | |
5067 | int status; | |
5068 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
5069 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
5070 | char from_esn[NAM$C_MAXRSS]; | |
5071 | char to_esn[NAM$C_MAXRSS]; | |
5072 | ||
5073 | from_fab.fab$l_fna = from; | |
5074 | from_fab.fab$b_fns = strlen (from); | |
5075 | from_fab.fab$l_nam = &from_nam; | |
5076 | from_fab.fab$l_fop = FAB$M_NAM; | |
5077 | ||
5078 | from_nam.nam$l_esa = from_esn; | |
5079 | from_nam.nam$b_ess = sizeof from_esn; | |
5080 | ||
5081 | to_fab.fab$l_fna = to; | |
5082 | to_fab.fab$b_fns = strlen (to); | |
5083 | to_fab.fab$l_nam = &to_nam; | |
5084 | to_fab.fab$l_fop = FAB$M_NAM; | |
5085 | ||
5086 | to_nam.nam$l_esa = to_esn; | |
5087 | to_nam.nam$b_ess = sizeof to_esn; | |
5088 | ||
5089 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
5090 | ||
5091 | if (status & 1) | |
5092 | return 0; | |
5093 | else | |
5094 | { | |
5095 | if (status == RMS$_DEV) | |
5096 | errno = EXDEV; | |
5097 | else | |
5098 | errno = EVMSERR; | |
5099 | vaxc$errno = status; | |
5100 | return -1; | |
5101 | } | |
5102 | } | |
5103 | ||
5104 | /* This function renames a file like `rename', but it strips | |
5105 | the version number from the "to" filename, such that the "to" file is | |
5106 | will always be a new version. It also sets the file protection once it is | |
5107 | finished. The protection that we will use is stored in fab_final_pro, | |
5108 | and was set when we did a creat_copy_attrs to create the file that we | |
5109 | are renaming. | |
5110 | ||
5111 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 5112 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
5113 | bits). To maintain portability, the VMS implementation of `chmod' wires |
5114 | the W and D bits together. */ | |
5115 | ||
177c0ea7 | 5116 | |
86a5659e JB |
5117 | static struct fibdef fib; /* We need this initialized to zero */ |
5118 | char vms_file_written[NAM$C_MAXRSS]; | |
5119 | ||
5120 | int | |
5121 | rename_sans_version (from,to) | |
5122 | char *from, *to; | |
5123 | { | |
5124 | short int chan; | |
5125 | int stat; | |
5126 | short int iosb[4]; | |
5127 | int status; | |
5128 | struct FAB to_fab = cc$rms_fab; | |
5129 | struct NAM to_nam = cc$rms_nam; | |
5130 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
5131 | struct dsc$descriptor fib_attr[2] | |
5132 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
5133 | char to_esn[NAM$C_MAXRSS]; | |
5134 | ||
5135 | $DESCRIPTOR (disk,to_esn); | |
5136 | ||
5137 | to_fab.fab$l_fna = to; | |
5138 | to_fab.fab$b_fns = strlen (to); | |
5139 | to_fab.fab$l_nam = &to_nam; | |
5140 | to_fab.fab$l_fop = FAB$M_NAM; | |
5141 | ||
5142 | to_nam.nam$l_esa = to_esn; | |
5143 | to_nam.nam$b_ess = sizeof to_esn; | |
5144 | ||
5145 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
5146 | ||
5147 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
5148 | *(to_nam.nam$l_ver) = '\0'; | |
5149 | ||
5150 | stat = rename (from, to_esn); | |
5151 | if (stat < 0) | |
5152 | return stat; | |
5153 | ||
5154 | strcpy (vms_file_written, to_esn); | |
5155 | ||
5156 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
5157 | to_fab.fab$b_fns = strlen (vms_file_written); | |
5158 | ||
5159 | /* Now set the file protection to the correct value */ | |
986ffb24 | 5160 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
5161 | |
5162 | /* Copy these fields into the fib */ | |
5163 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
5164 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
5165 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
5166 | ||
986ffb24 | 5167 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 5168 | |
986ffb24 | 5169 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 5170 | if (!stat) |
986ffb24 JB |
5171 | LIB$SIGNAL (stat); |
5172 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
5173 | 0, 0, 0, &fib_attr, 0); |
5174 | if (!stat) | |
986ffb24 JB |
5175 | LIB$SIGNAL (stat); |
5176 | stat = SYS$DASSGN (chan); | |
86a5659e | 5177 | if (!stat) |
986ffb24 | 5178 | LIB$SIGNAL (stat); |
0137dbf7 | 5179 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
5180 | return 0; |
5181 | } | |
5182 | ||
dfcf069d | 5183 | int |
86a5659e JB |
5184 | link (file, new) |
5185 | char * file, * new; | |
5186 | { | |
5187 | register status; | |
5188 | struct FAB fab; | |
5189 | struct NAM nam; | |
5190 | unsigned short fid[3]; | |
5191 | char esa[NAM$C_MAXRSS]; | |
5192 | ||
5193 | fab = cc$rms_fab; | |
5194 | fab.fab$l_fop = FAB$M_OFP; | |
5195 | fab.fab$l_fna = file; | |
5196 | fab.fab$b_fns = strlen (file); | |
5197 | fab.fab$l_nam = &nam; | |
5198 | ||
5199 | nam = cc$rms_nam; | |
5200 | nam.nam$l_esa = esa; | |
5201 | nam.nam$b_ess = NAM$C_MAXRSS; | |
5202 | ||
5203 | status = SYS$PARSE (&fab); | |
5204 | if ((status & 1) == 0) | |
5205 | { | |
5206 | errno = EVMSERR; | |
5207 | vaxc$errno = status; | |
5208 | return -1; | |
5209 | } | |
5210 | status = SYS$SEARCH (&fab); | |
5211 | if ((status & 1) == 0) | |
5212 | { | |
5213 | errno = EVMSERR; | |
5214 | vaxc$errno = status; | |
5215 | return -1; | |
5216 | } | |
5217 | ||
5218 | fid[0] = nam.nam$w_fid[0]; | |
5219 | fid[1] = nam.nam$w_fid[1]; | |
5220 | fid[2] = nam.nam$w_fid[2]; | |
5221 | ||
5222 | fab.fab$l_fna = new; | |
5223 | fab.fab$b_fns = strlen (new); | |
5224 | ||
5225 | status = SYS$PARSE (&fab); | |
5226 | if ((status & 1) == 0) | |
5227 | { | |
5228 | errno = EVMSERR; | |
5229 | vaxc$errno = status; | |
5230 | return -1; | |
5231 | } | |
5232 | ||
5233 | nam.nam$w_fid[0] = fid[0]; | |
5234 | nam.nam$w_fid[1] = fid[1]; | |
5235 | nam.nam$w_fid[2] = fid[2]; | |
5236 | ||
5237 | nam.nam$l_esa = nam.nam$l_name; | |
5238 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
5239 | ||
5240 | status = SYS$ENTER (&fab); | |
5241 | if ((status & 1) == 0) | |
5242 | { | |
5243 | errno = EVMSERR; | |
5244 | vaxc$errno = status; | |
5245 | return -1; | |
5246 | } | |
5247 | ||
5248 | return 0; | |
5249 | } | |
5250 | ||
dfcf069d | 5251 | void |
86a5659e JB |
5252 | croak (badfunc) |
5253 | char *badfunc; | |
5254 | { | |
5255 | printf ("%s not yet implemented\r\n", badfunc); | |
28d440ab | 5256 | reset_all_sys_modes (); |
86a5659e JB |
5257 | exit (1); |
5258 | } | |
5259 | ||
5260 | long | |
5261 | random () | |
5262 | { | |
5263 | /* Arrange to return a range centered on zero. */ | |
5264 | return rand () - (1 << 30); | |
5265 | } | |
5266 | ||
dfcf069d | 5267 | void |
86a5659e JB |
5268 | srandom (seed) |
5269 | { | |
5270 | srand (seed); | |
5271 | } | |
5272 | #endif /* VMS */ | |
5273 | \f | |
b97ab886 | 5274 | #ifdef AIXHFT |
86a5659e JB |
5275 | |
5276 | /* Called from init_sys_modes. */ | |
dfcf069d | 5277 | void |
28d7d09f | 5278 | hft_init (struct tty_display_info *tty_out) |
86a5659e JB |
5279 | { |
5280 | int junk; | |
5281 | ||
5282 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5283 | if we are on an HFT by trying to get an HFT error code. If this | |
177c0ea7 | 5284 | call fails, we're not on an HFT. */ |
86a5659e JB |
5285 | #ifdef IBMR2AIX |
5286 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5287 | return; | |
5288 | #else /* not IBMR2AIX */ | |
5289 | if (ioctl (0, HFQEIO, 0) < 0) | |
5290 | return; | |
5291 | #endif /* not IBMR2AIX */ | |
5292 | ||
5293 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5294 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5295 | there's no way to determine the old mapping, so in reset_sys_modes | |
5296 | we need to assume that the normal map had been present. Of course, this | |
5297 | code also doesn't help if on a terminal emulator which doesn't understand | |
c4ea52a6 | 5298 | HFT VTD's. */ |
86a5659e JB |
5299 | { |
5300 | struct hfbuf buf; | |
5301 | struct hfkeymap keymap; | |
5302 | ||
5303 | buf.hf_bufp = (char *)&keymap; | |
5304 | buf.hf_buflen = sizeof (keymap); | |
5305 | keymap.hf_nkeys = 2; | |
5306 | keymap.hfkey[0].hf_kpos = 15; | |
5307 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5308 | #ifdef IBMR2AIX | |
5309 | keymap.hfkey[0].hf_keyidh = '<'; | |
5310 | #else /* not IBMR2AIX */ | |
5311 | keymap.hfkey[0].hf_page = '<'; | |
5312 | #endif /* not IBMR2AIX */ | |
5313 | keymap.hfkey[0].hf_char = 127; | |
5314 | keymap.hfkey[1].hf_kpos = 15; | |
5315 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5316 | #ifdef IBMR2AIX | |
5317 | keymap.hfkey[1].hf_keyidh = '<'; | |
5318 | #else /* not IBMR2AIX */ | |
5319 | keymap.hfkey[1].hf_page = '<'; | |
5320 | #endif /* not IBMR2AIX */ | |
5321 | keymap.hfkey[1].hf_char = 127; | |
5322 | hftctl (0, HFSKBD, &buf); | |
5323 | } | |
86a5659e JB |
5324 | } |
5325 | ||
c4ea52a6 | 5326 | /* Reset the rubout key to backspace. */ |
86a5659e | 5327 | |
dfcf069d | 5328 | void |
28d7d09f | 5329 | hft_reset (struct tty_display_info *tty_out) |
86a5659e JB |
5330 | { |
5331 | struct hfbuf buf; | |
5332 | struct hfkeymap keymap; | |
5333 | int junk; | |
5334 | ||
5335 | #ifdef IBMR2AIX | |
5336 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5337 | return; | |
5338 | #else /* not IBMR2AIX */ | |
5339 | if (ioctl (0, HFQEIO, 0) < 0) | |
5340 | return; | |
5341 | #endif /* not IBMR2AIX */ | |
5342 | ||
5343 | buf.hf_bufp = (char *)&keymap; | |
5344 | buf.hf_buflen = sizeof (keymap); | |
5345 | keymap.hf_nkeys = 2; | |
5346 | keymap.hfkey[0].hf_kpos = 15; | |
5347 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5348 | #ifdef IBMR2AIX | |
5349 | keymap.hfkey[0].hf_keyidh = '<'; | |
5350 | #else /* not IBMR2AIX */ | |
5351 | keymap.hfkey[0].hf_page = '<'; | |
5352 | #endif /* not IBMR2AIX */ | |
5353 | keymap.hfkey[0].hf_char = 8; | |
5354 | keymap.hfkey[1].hf_kpos = 15; | |
5355 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5356 | #ifdef IBMR2AIX | |
5357 | keymap.hfkey[1].hf_keyidh = '<'; | |
5358 | #else /* not IBMR2AIX */ | |
5359 | keymap.hfkey[1].hf_page = '<'; | |
5360 | #endif /* not IBMR2AIX */ | |
5361 | keymap.hfkey[1].hf_char = 8; | |
5362 | hftctl (0, HFSKBD, &buf); | |
5363 | } | |
5364 | ||
b97ab886 | 5365 | #endif /* AIXHFT */ |
c238be24 RS |
5366 | |
5367 | #ifdef USE_DL_STUBS | |
5368 | ||
5369 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5370 | X11 libraries may refer to these functions but (we hope) do not | |
5371 | actually call them. */ | |
5372 | ||
5373 | void * | |
5374 | dlopen () | |
5375 | { | |
5376 | return 0; | |
5377 | } | |
5378 | ||
5379 | void * | |
5380 | dlsym () | |
5381 | { | |
5382 | return 0; | |
5383 | } | |
5384 | ||
5385 | int | |
5386 | dlclose () | |
5387 | { | |
5388 | return -1; | |
5389 | } | |
5390 | ||
5391 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5392 | \f |
5393 | #ifndef BSTRING | |
5394 | ||
5395 | #ifndef bzero | |
5396 | ||
5397 | void | |
5398 | bzero (b, length) | |
5399 | register char *b; | |
5400 | register int length; | |
5401 | { | |
5402 | #ifdef VMS | |
5403 | short zero = 0; | |
5404 | long max_str = 65535; | |
5405 | ||
5406 | while (length > max_str) { | |
5407 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5408 | length -= max_str; | |
5409 | b += max_str; | |
5410 | } | |
5411 | max_str = length; | |
5412 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5413 | #else | |
5414 | while (length-- > 0) | |
5415 | *b++ = 0; | |
5416 | #endif /* not VMS */ | |
5417 | } | |
5418 | ||
5419 | #endif /* no bzero */ | |
5420 | #endif /* BSTRING */ | |
5421 | ||
c7f93f28 | 5422 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5423 | #undef bcopy |
5424 | ||
5425 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5426 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5427 | bcopy (b1, b2, length) | |
5428 | register char *b1; | |
5429 | register char *b2; | |
5430 | register int length; | |
5431 | { | |
5432 | #ifdef VMS | |
5433 | long max_str = 65535; | |
5434 | ||
5435 | while (length > max_str) { | |
5436 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5437 | length -= max_str; | |
5438 | b1 += max_str; | |
5439 | b2 += max_str; | |
5440 | } | |
5441 | max_str = length; | |
5442 | (void) LIB$MOVC3 (&length, b1, b2); | |
5443 | #else | |
5444 | while (length-- > 0) | |
5445 | *b2++ = *b1++; | |
5446 | #endif /* not VMS */ | |
5447 | } | |
dfcf069d | 5448 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ |
51417996 | 5449 | |
c7f93f28 | 5450 | #ifndef BSTRING |
51417996 RS |
5451 | #ifndef bcmp |
5452 | int | |
5453 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5454 | register char *b1; | |
5455 | register char *b2; | |
5456 | register int length; | |
5457 | { | |
5458 | #ifdef VMS | |
5459 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5460 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5461 | ||
5462 | return STR$COMPARE (&src1, &src2); | |
5463 | #else | |
5464 | while (length-- > 0) | |
5465 | if (*b1++ != *b2++) | |
5466 | return 1; | |
5467 | ||
5468 | return 0; | |
5469 | #endif /* not VMS */ | |
5470 | } | |
5471 | #endif /* no bcmp */ | |
5472 | #endif /* not BSTRING */ | |
68c45bf0 PE |
5473 | \f |
5474 | #ifndef HAVE_STRSIGNAL | |
5475 | char * | |
5476 | strsignal (code) | |
5477 | int code; | |
5478 | { | |
5479 | char *signame = 0; | |
5480 | ||
5481 | if (0 <= code && code < NSIG) | |
5482 | { | |
5483 | #ifdef VMS | |
5484 | signame = sys_errlist[code]; | |
5485 | #else | |
5486 | /* Cast to suppress warning if the table has const char *. */ | |
5487 | signame = (char *) sys_siglist[code]; | |
5488 | #endif | |
5489 | } | |
c4ea52a6 | 5490 | |
68c45bf0 PE |
5491 | return signame; |
5492 | } | |
5493 | #endif /* HAVE_STRSIGNAL */ | |
c4ea52a6 | 5494 | |
ab5796a9 MB |
5495 | /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf |
5496 | (do not change this comment) */ |