Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
22b56426 | 2 | Copyright (C) 1985, 86,87,88,93,94,95, 1999, 2000, 2001 |
5bdd7bdd | 3 | 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 | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
86a5659e | 21 | |
4838e624 PJ |
22 | #ifdef HAVE_CONFIG_H |
23 | #include <config.h> | |
24 | #endif | |
86a5659e JB |
25 | |
26 | #include <signal.h> | |
27 | #include <setjmp.h> | |
d3eb3bfa DL |
28 | #ifdef HAVE_UNISTD_H |
29 | #include <unistd.h> | |
30 | #endif | |
86a5659e | 31 | #include "lisp.h" |
8296bbf8 DL |
32 | /* Including stdlib.h isn't necessarily enough to get srandom |
33 | declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */ | |
34 | #ifdef HAVE_RANDOM | |
1bfb1345 DL |
35 | #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets |
36 | random prototyped as returning `int'. It looks to me as | |
37 | though the best way to DTRT is to prefer the rand48 functions | |
38 | (per libc.info). -- fx */ | |
8296bbf8 | 39 | extern long int random P_ ((void)); |
1bfb1345 | 40 | #endif |
ff4c29f4 GM |
41 | #if 0 /* Don't prototype srandom; it takes an unsigned argument on |
42 | some systems, and an unsigned long on others, like FreeBSD | |
43 | 4.1. */ | |
8296bbf8 DL |
44 | extern void srandom P_ ((unsigned int)); |
45 | #endif | |
ff4c29f4 | 46 | #endif |
8296bbf8 | 47 | |
9ac0d9e0 | 48 | #include "blockinput.h" |
86a5659e JB |
49 | #undef NULL |
50 | ||
e0f712ba | 51 | #ifdef MAC_OS8 |
1a578e9b AC |
52 | /* It is essential to include stdlib.h so that this file picks up |
53 | the correct definitions of rand, srand, and RAND_MAX. | |
54 | Otherwise random numbers will not work correctly. */ | |
55 | #include <stdlib.h> | |
56 | ||
c4ea52a6 RS |
57 | #ifndef subprocesses |
58 | /* Nonzero means delete a process right away if it exits (process.c). */ | |
59 | static int delete_exited_processes; | |
60 | #endif | |
e0f712ba | 61 | #endif /* MAC_OS8 */ |
c4ea52a6 | 62 | |
fe03522b | 63 | #ifdef WINDOWSNT |
e15b6288 JR |
64 | #define read sys_read |
65 | #define write sys_write | |
fe03522b | 66 | #include <windows.h> |
e36ec798 AI |
67 | #ifndef NULL |
68 | #define NULL 0 | |
69 | #endif | |
fe03522b RS |
70 | #endif /* not WINDOWSNT */ |
71 | ||
986ffb24 JB |
72 | /* Does anyone other than VMS need this? */ |
73 | #ifndef fwrite | |
74 | #define sys_fwrite fwrite | |
75 | #else | |
76 | #undef fwrite | |
77 | #endif | |
78 | ||
86a5659e JB |
79 | #include <stdio.h> |
80 | #include <sys/types.h> | |
81 | #include <sys/stat.h> | |
82 | #include <errno.h> | |
83 | ||
dca8521c RS |
84 | /* Get _POSIX_VDISABLE, if it is available. */ |
85 | #ifdef HAVE_UNISTD_H | |
86 | #include <unistd.h> | |
87 | #endif | |
88 | ||
d3eb3bfa DL |
89 | #ifdef HAVE_STDLIB_H |
90 | #include <stdlib.h> | |
91 | #endif | |
92 | ||
f95c3f91 | 93 | #ifdef HAVE_SETPGID |
2b7e8799 | 94 | #if !defined (USG) || defined (BSD_PGRPS) |
c8875a65 | 95 | #undef setpgrp |
f95c3f91 GM |
96 | #define setpgrp setpgid |
97 | #endif | |
2b7e8799 | 98 | #endif |
f95c3f91 | 99 | |
b05af5d3 PE |
100 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
101 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
102 | #include <sys/systeminfo.h> | |
103 | #endif | |
104 | ||
207bdbdb RS |
105 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
106 | #include <dos.h> | |
107 | #include "dosfns.h" | |
108 | #include "msdos.h" | |
109 | #include <sys/param.h> | |
15614e61 RS |
110 | |
111 | #if __DJGPP__ > 1 | |
112 | extern int etext; | |
113 | extern unsigned start __asm__ ("start"); | |
114 | #endif | |
207bdbdb RS |
115 | #endif |
116 | ||
e36ec798 | 117 | #ifndef USE_CRT_DLL |
9ee9af7a | 118 | #ifndef errno |
86a5659e | 119 | extern int errno; |
9ee9af7a | 120 | #endif |
e36ec798 | 121 | #endif |
86a5659e | 122 | |
bb4bc8e2 RM |
123 | #ifdef VMS |
124 | #include <rms.h> | |
125 | #include <ttdef.h> | |
126 | #include <tt2def.h> | |
127 | #include <iodef.h> | |
128 | #include <ssdef.h> | |
129 | #include <descrip.h> | |
130 | #include <fibdef.h> | |
131 | #include <atrdef.h> | |
132 | #include <ctype.h> | |
133 | #include <string.h> | |
134 | #ifdef __GNUC__ | |
135 | #include <sys/file.h> | |
136 | #else | |
137 | #include <file.h> | |
138 | #endif | |
139 | #undef F_SETFL | |
140 | #ifndef RAB$C_BID | |
141 | #include <rab.h> | |
142 | #endif | |
fe03522b | 143 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
144 | #endif /* VMS */ |
145 | ||
7ce1c4de RS |
146 | #ifndef VMS |
147 | #include <sys/file.h> | |
148 | #endif /* not VMS */ | |
149 | ||
bb4bc8e2 | 150 | #ifndef BSD4_1 |
2a633456 | 151 | #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG) |
bb4bc8e2 RM |
152 | because the vms compiler doesn't grok `defined' */ |
153 | #include <fcntl.h> | |
154 | #endif | |
155 | #ifdef USG | |
156 | #ifndef USG5 | |
157 | #include <fcntl.h> | |
158 | #endif | |
159 | #endif | |
160 | #endif /* not 4.1 bsd */ | |
86a5659e | 161 | |
207bdbdb | 162 | #ifndef MSDOS |
86a5659e | 163 | #include <sys/ioctl.h> |
207bdbdb | 164 | #endif |
2a633456 | 165 | |
e04a4e0d | 166 | #include "systty.h" |
94c8642a | 167 | #include "syswait.h" |
86a5659e | 168 | |
86a5659e JB |
169 | #ifdef BROKEN_TIOCGWINSZ |
170 | #undef TIOCGWINSZ | |
8dca3179 | 171 | #undef TIOCSWINSZ |
86a5659e JB |
172 | #endif |
173 | ||
c4ea52a6 | 174 | #if defined (USG) || defined (DGUX) |
86a5659e | 175 | #include <sys/utsname.h> |
86a5659e JB |
176 | #ifndef MEMORY_IN_STRING_H |
177 | #include <memory.h> | |
178 | #endif | |
81444907 | 179 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
180 | #ifdef NEED_SIOCTL |
181 | #include <sys/sioctl.h> | |
182 | #endif | |
183 | #ifdef NEED_PTEM_H | |
184 | #include <sys/stream.h> | |
185 | #include <sys/ptem.h> | |
186 | #endif | |
81444907 | 187 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 188 | #endif /* USG or DGUX */ |
86a5659e | 189 | |
86a5659e JB |
190 | extern int quit_char; |
191 | ||
e36ec798 | 192 | #include "keyboard.h" |
0137dbf7 | 193 | #include "frame.h" |
86a5659e JB |
194 | #include "window.h" |
195 | #include "termhooks.h" | |
196 | #include "termchar.h" | |
197 | #include "termopts.h" | |
198 | #include "dispextern.h" | |
199 | #include "process.h" | |
200 | ||
fe03522b RS |
201 | #ifdef WINDOWSNT |
202 | #include <direct.h> | |
203 | /* In process.h which conflicts with the local copy. */ | |
204 | #define _P_WAIT 0 | |
205 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
206 | int _CRTAPI1 _getpid (void); | |
207 | #endif | |
208 | ||
86a5659e JB |
209 | #ifdef NONSYSTEM_DIR_LIBRARY |
210 | #include "ndir.h" | |
211 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
212 | ||
91bac16a JB |
213 | #include "syssignal.h" |
214 | #include "systime.h" | |
d79998bc KH |
215 | #ifdef HAVE_UTIME_H |
216 | #include <utime.h> | |
217 | #endif | |
218 | ||
219 | #ifndef HAVE_UTIMES | |
220 | #ifndef HAVE_STRUCT_UTIMBUF | |
221 | /* We want to use utime rather than utimes, but we couldn't find the | |
222 | structure declaration. We'll use the traditional one. */ | |
223 | struct utimbuf { | |
224 | long actime; | |
225 | long modtime; | |
226 | }; | |
227 | #endif | |
228 | #endif | |
86a5659e | 229 | |
a00d5589 RS |
230 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
231 | #ifndef LPASS8 | |
232 | #define LPASS8 0 | |
233 | #endif | |
234 | ||
235 | #ifdef BSD4_1 | |
236 | #define LNOFLSH 0100000 | |
237 | #endif | |
238 | ||
86a5659e JB |
239 | static int baud_convert[] = |
240 | #ifdef BAUD_CONVERT | |
241 | BAUD_CONVERT; | |
242 | #else | |
243 | { | |
244 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
245 | 1800, 2400, 4800, 9600, 19200, 38400 | |
246 | }; | |
247 | #endif | |
248 | ||
f0d21750 GM |
249 | #ifdef HAVE_SPEED_T |
250 | #include <termios.h> | |
f0d21750 | 251 | #else |
ba5971b3 | 252 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
ba5971b3 | 253 | #else |
8a2a6032 | 254 | #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX) |
515b04d0 | 255 | #include <termios.h> |
f2361c60 | 256 | #endif |
ba5971b3 | 257 | #endif |
f0d21750 | 258 | #endif |
86a5659e | 259 | |
5bdd7bdd GM |
260 | int emacs_ospeed; |
261 | ||
91bac16a | 262 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
263 | Under Unix, this is normally zero except when using X; |
264 | under VMS, we place the input channel number here. */ | |
265 | int input_fd; | |
b9c4113e RS |
266 | |
267 | void croak P_ ((char *)); | |
268 | ||
6d0d20a1 RS |
269 | #ifdef AIXHFT |
270 | void hft_init (); | |
271 | void hft_reset (); | |
272 | #endif | |
b9c4113e | 273 | |
89723395 GM |
274 | /* Temporary used by `sigblock' when defined in terms of signprocmask. */ |
275 | ||
276 | SIGMASKTYPE sigprocmask_set; | |
277 | ||
64e971c3 RS |
278 | \f |
279 | /* Specify a different file descriptor for further input operations. */ | |
280 | ||
281 | void | |
282 | change_input_fd (fd) | |
283 | int fd; | |
284 | { | |
285 | input_fd = fd; | |
286 | } | |
287 | ||
288 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 289 | |
08633194 | 290 | void |
86a5659e JB |
291 | discard_tty_input () |
292 | { | |
fe03522b | 293 | #ifndef WINDOWSNT |
91bac16a | 294 | struct emacs_tty buf; |
86a5659e JB |
295 | |
296 | if (noninteractive) | |
297 | return; | |
298 | ||
299 | /* Discarding input is not safe when the input could contain | |
300 | replies from the X server. So don't do it. */ | |
301 | if (read_socket_hook) | |
302 | return; | |
303 | ||
304 | #ifdef VMS | |
305 | end_kbd_input (); | |
91bac16a JB |
306 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
307 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
308 | queue_kbd_input (); |
309 | #else /* not VMS */ | |
310 | #ifdef APOLLO | |
311 | { | |
312 | int zero = 0; | |
64e971c3 | 313 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
314 | } |
315 | #else /* not Apollo */ | |
fe03522b | 316 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 317 | while (dos_keyread () != -1) |
fe03522b | 318 | ; |
207bdbdb | 319 | #else /* not MSDOS */ |
91bac16a JB |
320 | EMACS_GET_TTY (input_fd, &buf); |
321 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 322 | #endif /* not MSDOS */ |
86a5659e JB |
323 | #endif /* not Apollo */ |
324 | #endif /* not VMS */ | |
fe03522b | 325 | #endif /* not WINDOWSNT */ |
86a5659e JB |
326 | } |
327 | ||
328 | #ifdef SIGTSTP | |
329 | ||
64e971c3 RS |
330 | /* Arrange for character C to be read as the next input from |
331 | the terminal. */ | |
332 | ||
dfcf069d | 333 | void |
0c2338d8 DL |
334 | #ifdef PROTOTYPES |
335 | stuff_char (char c) | |
336 | #else | |
86a5659e JB |
337 | stuff_char (c) |
338 | char c; | |
0c2338d8 | 339 | #endif |
86a5659e | 340 | { |
23dab951 RS |
341 | if (read_socket_hook) |
342 | return; | |
343 | ||
86a5659e JB |
344 | /* Should perhaps error if in batch mode */ |
345 | #ifdef TIOCSTI | |
64e971c3 | 346 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 347 | #else /* no TIOCSTI */ |
71f06467 | 348 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
349 | #endif /* no TIOCSTI */ |
350 | } | |
351 | ||
352 | #endif /* SIGTSTP */ | |
64e971c3 | 353 | \f |
08633194 | 354 | void |
86a5659e JB |
355 | init_baud_rate () |
356 | { | |
86a5659e | 357 | if (noninteractive) |
5bdd7bdd | 358 | emacs_ospeed = 0; |
86a5659e JB |
359 | else |
360 | { | |
dfc366c9 RS |
361 | #ifdef INIT_BAUD_RATE |
362 | INIT_BAUD_RATE (); | |
363 | #else | |
fe03522b | 364 | #ifdef DOS_NT |
5bdd7bdd | 365 | emacs_ospeed = 15; |
fe03522b | 366 | #else /* not DOS_NT */ |
86a5659e | 367 | #ifdef VMS |
91bac16a JB |
368 | struct sensemode sg; |
369 | ||
370 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 371 | &sg.class, 12, 0, 0, 0, 0 ); |
5bdd7bdd | 372 | emacs_ospeed = sg.xmit_baud; |
91bac16a | 373 | #else /* not VMS */ |
e04a4e0d JB |
374 | #ifdef HAVE_TERMIOS |
375 | struct termios sg; | |
91bac16a | 376 | |
71f06467 | 377 | sg.c_cflag = B9600; |
64e971c3 | 378 | tcgetattr (input_fd, &sg); |
5bdd7bdd | 379 | emacs_ospeed = cfgetospeed (&sg); |
5baff9ce | 380 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b | 381 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
5bdd7bdd GM |
382 | if (emacs_ospeed == 0) |
383 | emacs_ospeed = getobaud (sg.c_cflag); | |
2f43149b | 384 | #endif |
e04a4e0d JB |
385 | #else /* neither VMS nor TERMIOS */ |
386 | #ifdef HAVE_TERMIO | |
387 | struct termio sg; | |
91bac16a | 388 | |
71f06467 | 389 | sg.c_cflag = B9600; |
e04a4e0d | 390 | #ifdef HAVE_TCATTR |
64e971c3 | 391 | tcgetattr (input_fd, &sg); |
e04a4e0d | 392 | #else |
6c65530f | 393 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 394 | #endif |
5bdd7bdd | 395 | emacs_ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 396 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
397 | struct sgttyb sg; |
398 | ||
399 | sg.sg_ospeed = B9600; | |
64e971c3 | 400 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 401 | abort (); |
5bdd7bdd | 402 | emacs_ospeed = sg.sg_ospeed; |
91bac16a | 403 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 404 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 405 | #endif /* not VMS */ |
fe03522b | 406 | #endif /* not DOS_NT */ |
dfc366c9 | 407 | #endif /* not INIT_BAUD_RATE */ |
86a5659e JB |
408 | } |
409 | ||
5bdd7bdd GM |
410 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
411 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
412 | if (baud_rate == 0) |
413 | baud_rate = 1200; | |
414 | } | |
415 | ||
416 | /*ARGSUSED*/ | |
dfcf069d | 417 | void |
86a5659e JB |
418 | set_exclusive_use (fd) |
419 | int fd; | |
420 | { | |
421 | #ifdef FIOCLEX | |
422 | ioctl (fd, FIOCLEX, 0); | |
423 | #endif | |
424 | /* Ok to do nothing if this feature does not exist */ | |
425 | } | |
64e971c3 | 426 | \f |
86a5659e JB |
427 | #ifndef subprocesses |
428 | ||
429 | wait_without_blocking () | |
430 | { | |
2a633456 | 431 | #ifdef BSD_SYSTEM |
86a5659e JB |
432 | wait3 (0, WNOHANG | WUNTRACED, 0); |
433 | #else | |
434 | croak ("wait_without_blocking"); | |
435 | #endif | |
436 | synch_process_alive = 0; | |
437 | } | |
438 | ||
439 | #endif /* not subprocesses */ | |
440 | ||
441 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 442 | (at least for bsd). */ |
86a5659e JB |
443 | |
444 | SIGTYPE | |
445 | wait_for_termination_signal () | |
446 | {} | |
447 | ||
448 | /* Wait for subprocess with process id `pid' to terminate and | |
449 | make sure it will get eliminated (not remain forever as a zombie) */ | |
450 | ||
08633194 | 451 | void |
86a5659e JB |
452 | wait_for_termination (pid) |
453 | int pid; | |
454 | { | |
455 | while (1) | |
456 | { | |
457 | #ifdef subprocesses | |
458 | #ifdef VMS | |
459 | int status; | |
460 | ||
986ffb24 | 461 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
462 | break; |
463 | #else /* not VMS */ | |
2a633456 | 464 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
465 | /* Note that kill returns -1 even if the process is just a zombie now. |
466 | But inevitably a SIGCHLD interrupt should be generated | |
467 | and child_sig will do wait3 and make the process go away. */ | |
468 | /* There is some indication that there is a bug involved with | |
469 | termination of subprocesses, perhaps involving a kernel bug too, | |
470 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
471 | if that causes the problem to go away or get worse. */ | |
472 | sigsetmask (sigmask (SIGCHLD)); | |
473 | if (0 > kill (pid, 0)) | |
fe03522b | 474 | { |
4c8975ad RS |
475 | sigsetmask (SIGEMPTYMASK); |
476 | kill (getpid (), SIGCHLD); | |
477 | break; | |
478 | } | |
479 | if (wait_debugging) | |
480 | sleep (1); | |
481 | else | |
482 | sigpause (SIGEMPTYMASK); | |
2a633456 | 483 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 484 | #if defined (UNIPLUS) |
4c8975ad RS |
485 | if (0 > kill (pid, 0)) |
486 | break; | |
487 | wait (0); | |
2a633456 | 488 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
8a2a6032 | 489 | #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */ |
9ab714c7 | 490 | sigblock (sigmask (SIGCHLD)); |
59957f85 GM |
491 | errno = 0; |
492 | if (kill (pid, 0) == -1 && errno == ESRCH) | |
9ab714c7 RS |
493 | { |
494 | sigunblock (sigmask (SIGCHLD)); | |
495 | break; | |
496 | } | |
ac3ac859 | 497 | |
0fdcb867 | 498 | sigsuspend (&empty_mask); |
9ab714c7 | 499 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
500 | #ifdef HAVE_SYSV_SIGPAUSE |
501 | sighold (SIGCHLD); | |
502 | if (0 > kill (pid, 0)) | |
503 | { | |
504 | sigrelse (SIGCHLD); | |
505 | break; | |
506 | } | |
507 | sigpause (SIGCHLD); | |
508 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
509 | #ifdef WINDOWSNT |
510 | wait (0); | |
511 | break; | |
512 | #else /* not WINDOWSNT */ | |
4c8975ad | 513 | if (0 > kill (pid, 0)) |
86a5659e | 514 | break; |
4c8975ad RS |
515 | /* Using sleep instead of pause avoids timing error. |
516 | If the inferior dies just before the sleep, | |
517 | we lose just one second. */ | |
518 | sleep (1); | |
fe03522b | 519 | #endif /* not WINDOWSNT */ |
4c8975ad | 520 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 521 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 522 | #endif /* not UNIPLUS */ |
2a633456 | 523 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
524 | #endif /* not VMS */ |
525 | #else /* not subprocesses */ | |
15614e61 RS |
526 | #if __DJGPP__ > 1 |
527 | break; | |
528 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
529 | #ifndef BSD4_1 |
530 | if (kill (pid, 0) < 0) | |
531 | break; | |
532 | wait (0); | |
533 | #else /* BSD4_1 */ | |
534 | int status; | |
535 | status = wait (0); | |
536 | if (status == pid || status == -1) | |
537 | break; | |
538 | #endif /* BSD4_1 */ | |
15614e61 | 539 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
540 | #endif /* not subprocesses */ |
541 | } | |
542 | } | |
543 | ||
544 | #ifdef subprocesses | |
545 | ||
546 | /* | |
547 | * flush any pending output | |
548 | * (may flush input as well; it does not matter the way we use it) | |
549 | */ | |
550 | ||
08633194 | 551 | void |
86a5659e JB |
552 | flush_pending_output (channel) |
553 | int channel; | |
554 | { | |
555 | #ifdef HAVE_TERMIOS | |
556 | /* If we try this, we get hit with SIGTTIN, because | |
557 | the child's tty belongs to the child's pgrp. */ | |
558 | #else | |
559 | #ifdef TCFLSH | |
560 | ioctl (channel, TCFLSH, 1); | |
561 | #else | |
562 | #ifdef TIOCFLUSH | |
563 | int zero = 0; | |
564 | /* 3rd arg should be ignored | |
565 | but some 4.2 kernels actually want the address of an int | |
566 | and nonzero means something different. */ | |
567 | ioctl (channel, TIOCFLUSH, &zero); | |
568 | #endif | |
569 | #endif | |
570 | #endif | |
571 | } | |
64e971c3 | 572 | \f |
86a5659e JB |
573 | #ifndef VMS |
574 | /* Set up the terminal at the other end of a pseudo-terminal that | |
575 | we will be controlling an inferior through. | |
576 | It should not echo or do line-editing, since that is done | |
577 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
578 | ||
08633194 | 579 | void |
86a5659e JB |
580 | child_setup_tty (out) |
581 | int out; | |
582 | { | |
fe03522b | 583 | #ifndef DOS_NT |
91bac16a JB |
584 | struct emacs_tty s; |
585 | ||
586 | EMACS_GET_TTY (out, &s); | |
86a5659e | 587 | |
31be8d24 | 588 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
589 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
590 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 591 | #ifdef NLDLY |
91bac16a JB |
592 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
593 | /* No output delays */ | |
9d4e5eea | 594 | #endif |
91bac16a JB |
595 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
596 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
2ea99a1e | 597 | #if 0 /* This causes bugs in (for instance) telnet to certain sites. */ |
402c9a51 GM |
598 | s.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ |
599 | #ifdef INLCR /* Just being cautious, since I can't check how | |
600 | widespread INLCR is--rms. */ | |
601 | s.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
602 | #endif | |
5a04bfa9 | 603 | #endif |
9d4e5eea RS |
604 | #ifdef IUCLC |
605 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
606 | #endif | |
f7097b2a RS |
607 | #ifdef ISTRIP |
608 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
609 | #endif | |
23e4c8be | 610 | #ifdef OLCUC |
9d4e5eea RS |
611 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
612 | #endif | |
f7097b2a | 613 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 614 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 615 | #if 0 |
eb8c3be9 | 616 | /* Said to be unnecessary: */ |
91bac16a JB |
617 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
618 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
619 | #endif | |
620 | ||
621 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
622 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
623 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
624 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 625 | |
86a5659e | 626 | #ifdef HPUX |
91bac16a | 627 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 628 | #endif /* HPUX */ |
91bac16a | 629 | |
86a5659e JB |
630 | #ifdef AIX |
631 | /* AIX enhanced edit loses NULs, so disable it */ | |
632 | #ifndef IBMR2AIX | |
91bac16a JB |
633 | s.main.c_line = 0; |
634 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
635 | #endif |
636 | /* Also, PTY overloads NUL and BREAK. | |
637 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
638 | s.main.c_iflag &= ~IGNBRK; |
639 | s.main.c_iflag &= ~BRKINT; | |
640 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 641 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
642 | #ifdef SIGNALS_VIA_CHARACTERS |
643 | /* the QUIT and INTR character are used in process_send_signal | |
644 | so set them here to something useful. */ | |
645 | if (s.main.c_cc[VQUIT] == 0377) | |
646 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
647 | if (s.main.c_cc[VINTR] == 0377) | |
648 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
649 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
650 | /* QUIT and INTR work better as signals, so disable character forms */ | |
651 | s.main.c_cc[VQUIT] = 0377; | |
652 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 653 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
654 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
655 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 656 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
657 | #endif /* AIX */ |
658 | ||
659 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
660 | |
661 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
662 | | CBREAK | TANDEM); | |
a00d5589 | 663 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
664 | s.main.sg_erase = 0377; |
665 | s.main.sg_kill = 0377; | |
1bf96fb5 | 666 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 667 | |
86a5659e JB |
668 | #endif /* not HAVE_TERMIO */ |
669 | ||
91bac16a | 670 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
671 | |
672 | #ifdef BSD4_1 | |
673 | if (interrupt_input) | |
674 | reset_sigio (); | |
675 | #endif /* BSD4_1 */ | |
676 | #ifdef RTU | |
677 | { | |
678 | int zero = 0; | |
679 | ioctl (out, FIOASYNC, &zero); | |
680 | } | |
681 | #endif /* RTU */ | |
fe03522b | 682 | #endif /* not DOS_NT */ |
86a5659e JB |
683 | } |
684 | #endif /* not VMS */ | |
685 | ||
686 | #endif /* subprocesses */ | |
64e971c3 | 687 | \f |
86a5659e JB |
688 | /* Record a signal code and the handler for it. */ |
689 | struct save_signal | |
690 | { | |
691 | int code; | |
35a05cca | 692 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
693 | }; |
694 | ||
35a05cca AS |
695 | static void save_signal_handlers P_ ((struct save_signal *)); |
696 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
697 | ||
86a5659e JB |
698 | /* Suspend the Emacs process; give terminal to its superior. */ |
699 | ||
08633194 | 700 | void |
86a5659e JB |
701 | sys_suspend () |
702 | { | |
703 | #ifdef VMS | |
88191e36 RS |
704 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
705 | to the current emacs as a cheaper than starting a whole new process. This | |
706 | is set up by KEPTEDITOR.COM. */ | |
707 | unsigned long parent_id, foster_parent_id; | |
708 | char *fpid_string; | |
709 | ||
710 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
711 | if (fpid_string != NULL) | |
712 | { | |
713 | sscanf (fpid_string, "%x", &foster_parent_id); | |
714 | if (foster_parent_id != 0) | |
715 | parent_id = foster_parent_id; | |
716 | else | |
717 | parent_id = getppid (); | |
718 | } | |
719 | else | |
720 | parent_id = getppid (); | |
721 | ||
9ac0d9e0 | 722 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 723 | |
86a5659e JB |
724 | if (parent_id && parent_id != 0xffffffff) |
725 | { | |
726 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
727 | int status = LIB$ATTACH (&parent_id) & 1; | |
728 | signal (SIGINT, oldsig); | |
729 | return status; | |
730 | } | |
731 | else | |
732 | { | |
733 | struct { | |
734 | int l; | |
735 | char *a; | |
736 | } d_prompt; | |
737 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
738 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 739 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
740 | return 1; |
741 | } | |
742 | return -1; | |
743 | #else | |
c4ea52a6 | 744 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 745 | |
5a570e37 | 746 | { |
e89a2cd5 | 747 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
748 | EMACS_KILLPG (pgrp, SIGTSTP); |
749 | } | |
86a5659e JB |
750 | |
751 | #else /* No SIGTSTP */ | |
752 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
753 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
754 | kill (getpid (), SIGQUIT); | |
755 | ||
756 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
757 | ||
758 | /* On a system where suspending is not implemented, | |
759 | instead fork a subshell and let it talk directly to the terminal | |
760 | while we wait. */ | |
a0932daa KH |
761 | sys_subshell (); |
762 | ||
763 | #endif /* no USG_JOBCTRL */ | |
764 | #endif /* no SIGTSTP */ | |
765 | #endif /* not VMS */ | |
766 | } | |
767 | ||
768 | /* Fork a subshell. */ | |
769 | ||
e0f712ba | 770 | #ifndef MAC_OS8 |
08633194 | 771 | void |
a0932daa KH |
772 | sys_subshell () |
773 | { | |
774 | #ifndef VMS | |
ad00c243 | 775 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
776 | int st; |
777 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
778 | #endif | |
efa04277 | 779 | int pid; |
86a5659e | 780 | struct save_signal saved_handlers[5]; |
efa04277 RS |
781 | Lisp_Object dir; |
782 | unsigned char *str = 0; | |
783 | int len; | |
86a5659e JB |
784 | |
785 | saved_handlers[0].code = SIGINT; | |
786 | saved_handlers[1].code = SIGQUIT; | |
787 | saved_handlers[2].code = SIGTERM; | |
788 | #ifdef SIGIO | |
789 | saved_handlers[3].code = SIGIO; | |
790 | saved_handlers[4].code = 0; | |
791 | #else | |
792 | saved_handlers[3].code = 0; | |
793 | #endif | |
794 | ||
efa04277 RS |
795 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
796 | which somehow wedges the hp compiler. So instead... */ | |
797 | ||
798 | dir = intern ("default-directory"); | |
0e7e7a58 | 799 | if (NILP (Fboundp (dir))) |
efa04277 RS |
800 | goto xyzzy; |
801 | dir = Fsymbol_value (dir); | |
914e81a2 | 802 | if (!STRINGP (dir)) |
efa04277 RS |
803 | goto xyzzy; |
804 | ||
805 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
d5db4077 KR |
806 | str = (unsigned char *) alloca (SCHARS (dir) + 2); |
807 | len = SCHARS (dir); | |
808 | bcopy (SDATA (dir), str, len); | |
efa04277 RS |
809 | if (str[len - 1] != '/') str[len++] = '/'; |
810 | str[len] = 0; | |
811 | xyzzy: | |
812 | ||
ad00c243 | 813 | #ifdef DOS_NT |
7964ba9e | 814 | pid = 0; |
718ca3cf RS |
815 | #if __DJGPP__ > 1 |
816 | save_signal_handlers (saved_handlers); | |
817 | synch_process_alive = 1; | |
818 | #endif /* __DJGPP__ > 1 */ | |
7964ba9e | 819 | #else |
efa04277 | 820 | pid = vfork (); |
86a5659e JB |
821 | if (pid == -1) |
822 | error ("Can't spawn subshell"); | |
7964ba9e RS |
823 | #endif |
824 | ||
86a5659e JB |
825 | if (pid == 0) |
826 | { | |
7964ba9e | 827 | char *sh = 0; |
86a5659e | 828 | |
ad00c243 | 829 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 830 | getwd (oldwd); |
7964ba9e RS |
831 | if (sh == 0) |
832 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 833 | #endif |
7964ba9e RS |
834 | if (sh == 0) |
835 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
836 | if (sh == 0) |
837 | sh = "sh"; | |
207bdbdb | 838 | |
86a5659e | 839 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 840 | if (str) |
074c438c | 841 | chdir ((char *) str); |
efa04277 | 842 | |
86a5659e JB |
843 | #ifdef subprocesses |
844 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
845 | #endif | |
1593c2fe | 846 | |
6f8b4d01 | 847 | #ifdef SET_EMACS_PRIORITY |
1593c2fe | 848 | { |
31ade731 | 849 | extern EMACS_INT emacs_priority; |
1593c2fe | 850 | |
6f8b4d01 | 851 | if (emacs_priority < 0) |
1593c2fe JB |
852 | nice (-emacs_priority); |
853 | } | |
854 | #endif | |
855 | ||
fe03522b | 856 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 857 | { |
48178f9a EZ |
858 | char *epwd = getenv ("PWD"); |
859 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
860 | |
861 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 862 | if (epwd) |
c0917202 | 863 | { |
48178f9a | 864 | strcpy (old_pwd, epwd); |
c0917202 EZ |
865 | if (str[len - 1] == '/') |
866 | str[len - 1] = '\0'; | |
867 | setenv ("PWD", str, 1); | |
868 | } | |
869 | st = system (sh); | |
870 | chdir (oldwd); | |
48178f9a | 871 | if (epwd) |
c0917202 EZ |
872 | putenv (old_pwd); /* restore previous value */ |
873 | } | |
7964ba9e | 874 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 875 | if (st) |
fe03522b | 876 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 877 | #endif |
207bdbdb | 878 | #else /* not MSDOS */ |
fe03522b | 879 | #ifdef WINDOWSNT |
fe03522b RS |
880 | /* Waits for process completion */ |
881 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 882 | chdir (oldwd); |
fe03522b RS |
883 | if (pid == -1) |
884 | write (1, "Can't execute subshell", 22); | |
fe03522b | 885 | #else /* not WINDOWSNT */ |
86a5659e JB |
886 | execlp (sh, sh, 0); |
887 | write (1, "Can't execute subshell", 22); | |
888 | _exit (1); | |
fe03522b | 889 | #endif /* not WINDOWSNT */ |
207bdbdb | 890 | #endif /* not MSDOS */ |
86a5659e JB |
891 | } |
892 | ||
718ca3cf RS |
893 | /* Do this now if we did not do it before. */ |
894 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 895 | save_signal_handlers (saved_handlers); |
ffafc793 | 896 | synch_process_alive = 1; |
718ca3cf RS |
897 | #endif |
898 | ||
ad00c243 | 899 | #ifndef DOS_NT |
86a5659e | 900 | wait_for_termination (pid); |
7964ba9e | 901 | #endif |
86a5659e | 902 | restore_signal_handlers (saved_handlers); |
718ca3cf | 903 | synch_process_alive = 0; |
a0932daa | 904 | #endif /* !VMS */ |
86a5659e | 905 | } |
e0f712ba | 906 | #endif /* !MAC_OS8 */ |
86a5659e | 907 | |
35a05cca | 908 | static void |
86a5659e JB |
909 | save_signal_handlers (saved_handlers) |
910 | struct save_signal *saved_handlers; | |
911 | { | |
912 | while (saved_handlers->code) | |
913 | { | |
508b171c | 914 | saved_handlers->handler |
35a05cca | 915 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
916 | saved_handlers++; |
917 | } | |
918 | } | |
919 | ||
35a05cca | 920 | static void |
86a5659e JB |
921 | restore_signal_handlers (saved_handlers) |
922 | struct save_signal *saved_handlers; | |
923 | { | |
924 | while (saved_handlers->code) | |
925 | { | |
926 | signal (saved_handlers->code, saved_handlers->handler); | |
927 | saved_handlers++; | |
928 | } | |
929 | } | |
930 | \f | |
931 | #ifdef F_SETFL | |
932 | ||
933 | int old_fcntl_flags; | |
934 | ||
08633194 | 935 | void |
23dab951 RS |
936 | init_sigio (fd) |
937 | int fd; | |
86a5659e JB |
938 | { |
939 | #ifdef FASYNC | |
23dab951 RS |
940 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
941 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 942 | #endif |
23dab951 | 943 | interrupts_deferred = 0; |
86a5659e JB |
944 | } |
945 | ||
590034f9 | 946 | void |
86a5659e JB |
947 | reset_sigio () |
948 | { | |
949 | unrequest_sigio (); | |
950 | } | |
951 | ||
eb8c3be9 | 952 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e | 953 | |
08633194 | 954 | void |
86a5659e JB |
955 | request_sigio () |
956 | { | |
23dab951 RS |
957 | if (read_socket_hook) |
958 | return; | |
959 | ||
86a5659e | 960 | #ifdef SIGWINCH |
e065a56e | 961 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 962 | #endif |
64e971c3 | 963 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
964 | |
965 | interrupts_deferred = 0; | |
966 | } | |
967 | ||
08633194 | 968 | void |
86a5659e JB |
969 | unrequest_sigio () |
970 | { | |
23dab951 RS |
971 | if (read_socket_hook) |
972 | return; | |
973 | ||
86a5659e | 974 | #ifdef SIGWINCH |
e065a56e | 975 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 976 | #endif |
64e971c3 | 977 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
978 | interrupts_deferred = 1; |
979 | } | |
980 | ||
981 | #else /* no FASYNC */ | |
982 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
983 | ||
08633194 | 984 | void |
86a5659e JB |
985 | request_sigio () |
986 | { | |
987 | int on = 1; | |
23dab951 RS |
988 | |
989 | if (read_socket_hook) | |
990 | return; | |
991 | ||
64e971c3 | 992 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
993 | interrupts_deferred = 0; |
994 | } | |
995 | ||
08633194 | 996 | void |
86a5659e JB |
997 | unrequest_sigio () |
998 | { | |
999 | int off = 0; | |
1000 | ||
23dab951 RS |
1001 | if (read_socket_hook) |
1002 | return; | |
1003 | ||
64e971c3 | 1004 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
1005 | interrupts_deferred = 1; |
1006 | } | |
1007 | ||
1008 | #else /* not FASYNC, not STRIDE */ | |
1009 | ||
25ab68af RS |
1010 | #ifdef _CX_UX |
1011 | ||
1012 | #include <termios.h> | |
1013 | ||
08633194 | 1014 | void |
25ab68af RS |
1015 | request_sigio () |
1016 | { | |
1017 | int on = 1; | |
1018 | sigset_t st; | |
1019 | ||
23dab951 RS |
1020 | if (read_socket_hook) |
1021 | return; | |
1022 | ||
c4ea52a6 RS |
1023 | sigemptyset (&st); |
1024 | sigaddset (&st, SIGIO); | |
25ab68af RS |
1025 | ioctl (input_fd, FIOASYNC, &on); |
1026 | interrupts_deferred = 0; | |
c4ea52a6 | 1027 | sigprocmask (SIG_UNBLOCK, &st, (sigset_t *)0); |
25ab68af RS |
1028 | } |
1029 | ||
08633194 | 1030 | void |
25ab68af RS |
1031 | unrequest_sigio () |
1032 | { | |
1033 | int off = 0; | |
1034 | ||
23dab951 RS |
1035 | if (read_socket_hook) |
1036 | return; | |
1037 | ||
25ab68af RS |
1038 | ioctl (input_fd, FIOASYNC, &off); |
1039 | interrupts_deferred = 1; | |
1040 | } | |
1041 | ||
1042 | #else /* ! _CX_UX */ | |
feb67dfe | 1043 | #ifndef MSDOS |
25ab68af | 1044 | |
08633194 | 1045 | void |
86a5659e JB |
1046 | request_sigio () |
1047 | { | |
23dab951 RS |
1048 | if (read_socket_hook) |
1049 | return; | |
1050 | ||
86a5659e JB |
1051 | croak ("request_sigio"); |
1052 | } | |
1053 | ||
08633194 | 1054 | void |
86a5659e JB |
1055 | unrequest_sigio () |
1056 | { | |
23dab951 RS |
1057 | if (read_socket_hook) |
1058 | return; | |
1059 | ||
86a5659e JB |
1060 | croak ("unrequest_sigio"); |
1061 | } | |
feb67dfe EZ |
1062 | |
1063 | #endif /* MSDOS */ | |
25ab68af | 1064 | #endif /* _CX_UX */ |
86a5659e JB |
1065 | #endif /* STRIDE */ |
1066 | #endif /* FASYNC */ | |
1067 | #endif /* F_SETFL */ | |
1068 | \f | |
9ae8f997 JB |
1069 | /* Saving and restoring the process group of Emacs's terminal. */ |
1070 | ||
0ba73609 | 1071 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1072 | |
1073 | /* The process group of which Emacs was a member when it initially | |
1074 | started. | |
1075 | ||
1076 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1077 | getpid ()), then we know we're running under a shell with job | |
1078 | control (Emacs would never be run as part of a pipeline). | |
1079 | Everything is fine. | |
1080 | ||
1081 | If Emacs was not in its own process group, then we know we're | |
1082 | running under a shell (or a caller) that doesn't know how to | |
1083 | separate itself from Emacs (like sh). Emacs must be in its own | |
1084 | process group in order to receive SIGIO correctly. In this | |
1085 | situation, we put ourselves in our own pgroup, forcibly set the | |
1086 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1087 | the tty's pgroup just like any other terminal setting. If | |
1088 | inherited_group was not the tty's pgroup, then we'll get a | |
1089 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
1090 | it goes foreground in the future, which is what should happen. */ | |
1091 | int inherited_pgroup; | |
1092 | ||
1093 | /* Split off the foreground process group to Emacs alone. | |
1094 | When we are in the foreground, but not started in our own process | |
1095 | group, redirect the TTY to point to our own process group. We need | |
1096 | to be in our own process group to receive SIGIO properly. */ | |
dfcf069d | 1097 | void |
9ae8f997 JB |
1098 | narrow_foreground_group () |
1099 | { | |
1100 | int me = getpid (); | |
1101 | ||
1102 | setpgrp (0, inherited_pgroup); | |
1103 | if (inherited_pgroup != me) | |
64e971c3 | 1104 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
1105 | setpgrp (0, me); |
1106 | } | |
1107 | ||
1108 | /* Set the tty to our original foreground group. */ | |
dfcf069d | 1109 | void |
9ae8f997 JB |
1110 | widen_foreground_group () |
1111 | { | |
1112 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 1113 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
1114 | setpgrp (0, inherited_pgroup); |
1115 | } | |
1116 | ||
0ba73609 | 1117 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1118 | \f |
68936329 JB |
1119 | /* Getting and setting emacs_tty structures. */ |
1120 | ||
1121 | /* Set *TC to the parameters associated with the terminal FD. | |
1122 | Return zero if all's well, or -1 if we ran into an error we | |
1123 | couldn't deal with. */ | |
1124 | int | |
1125 | emacs_get_tty (fd, settings) | |
1126 | int fd; | |
1127 | struct emacs_tty *settings; | |
1128 | { | |
1129 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1130 | #ifdef HAVE_TCATTR | |
1131 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1d9f9f9e | 1132 | bzero (&settings->main, sizeof (settings->main)); |
68936329 JB |
1133 | if (tcgetattr (fd, &settings->main) < 0) |
1134 | return -1; | |
1135 | ||
1136 | #else | |
1137 | #ifdef HAVE_TERMIO | |
1138 | /* The SYSV-style interface? */ | |
1139 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1140 | return -1; | |
1141 | ||
1142 | #else | |
1143 | #ifdef VMS | |
1144 | /* Vehemently Monstrous System? :-) */ | |
1145 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1146 | &settings->main.class, 12, 0, 0, 0, 0) | |
1147 | & 1)) | |
1148 | return -1; | |
1149 | ||
1150 | #else | |
fe03522b | 1151 | #ifndef DOS_NT |
68936329 JB |
1152 | /* I give up - I hope you have the BSD ioctls. */ |
1153 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1154 | return -1; | |
fe03522b | 1155 | #endif /* not DOS_NT */ |
68936329 JB |
1156 | #endif |
1157 | #endif | |
1158 | #endif | |
1159 | ||
1160 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1161 | #ifdef HAVE_LTCHARS |
68936329 JB |
1162 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1163 | return -1; | |
1164 | #endif | |
1165 | ||
1166 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1167 | #ifdef HAVE_TCHARS |
68936329 JB |
1168 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1169 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1170 | return -1; | |
1171 | #endif | |
1172 | ||
1173 | /* We have survived the tempest. */ | |
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | ||
1178 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1179 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1180 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1181 | |
68936329 | 1182 | int |
394049ec | 1183 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1184 | int fd; |
1185 | struct emacs_tty *settings; | |
394049ec | 1186 | int flushp; |
68936329 JB |
1187 | { |
1188 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1189 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1190 | int i; |
68936329 JB |
1191 | /* We have those nifty POSIX tcmumbleattr functions. |
1192 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 1193 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
1194 | able to perform any of the requested actions, even if some |
1195 | of the requested actions could not be performed. | |
1196 | We must read settings back to ensure tty setup properly. | |
1197 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1198 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1199 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1200 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1201 | { |
1202 | if (errno == EINTR) | |
1203 | continue; | |
1204 | else | |
1205 | return -1; | |
1206 | } | |
1207 | else | |
1208 | { | |
1209 | struct termios new; | |
1210 | ||
1d9f9f9e | 1211 | bzero (&new, sizeof (new)); |
68936329 JB |
1212 | /* Get the current settings, and see if they're what we asked for. */ |
1213 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1214 | /* We cannot use memcmp on the whole structure here because under |
1215 | * aix386 the termios structure has some reserved field that may | |
1216 | * not be filled in. | |
1217 | */ | |
1218 | if ( new.c_iflag == settings->main.c_iflag | |
1219 | && new.c_oflag == settings->main.c_oflag | |
1220 | && new.c_cflag == settings->main.c_cflag | |
1221 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 1222 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 1223 | break; |
e6cc3307 RS |
1224 | else |
1225 | continue; | |
68936329 JB |
1226 | } |
1227 | ||
1228 | #else | |
1229 | #ifdef HAVE_TERMIO | |
1230 | /* The SYSV-style interface? */ | |
394049ec | 1231 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1232 | return -1; |
1233 | ||
1234 | #else | |
1235 | #ifdef VMS | |
1236 | /* Vehemently Monstrous System? :-) */ | |
1237 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1238 | &settings->main.class, 12, 0, 0, 0, 0) | |
1239 | & 1)) | |
1240 | return -1; | |
1241 | ||
1242 | #else | |
fe03522b | 1243 | #ifndef DOS_NT |
68936329 | 1244 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1245 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1246 | return -1; |
fe03522b | 1247 | #endif /* not DOS_NT */ |
68936329 JB |
1248 | |
1249 | #endif | |
1250 | #endif | |
1251 | #endif | |
1252 | ||
1253 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1254 | #ifdef HAVE_LTCHARS |
68936329 JB |
1255 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1256 | return -1; | |
1257 | #endif | |
1258 | ||
1259 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1260 | #ifdef HAVE_TCHARS |
68936329 JB |
1261 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1262 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1263 | return -1; | |
1264 | #endif | |
1265 | ||
1266 | /* We have survived the tempest. */ | |
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | \f | |
91bac16a JB |
1271 | /* The initial tty mode bits */ |
1272 | struct emacs_tty old_tty; | |
86a5659e | 1273 | |
7e32a4fb KH |
1274 | /* 1 if we have been through init_sys_modes. */ |
1275 | int term_initted; | |
1276 | ||
1277 | /* 1 if outer tty status has been recorded. */ | |
1278 | int old_tty_valid; | |
86a5659e | 1279 | |
91bac16a JB |
1280 | #ifdef BSD4_1 |
1281 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1282 | sigio. */ | |
1283 | int lmode; | |
1284 | #endif | |
1285 | ||
46f2fdac | 1286 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1287 | #ifdef F_SETOWN |
1288 | int old_fcntl_owner; | |
1289 | #endif /* F_SETOWN */ | |
46f2fdac | 1290 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1291 | |
86a5659e JB |
1292 | /* This may also be defined in stdio, |
1293 | but if so, this does no harm, | |
1294 | and using the same name avoids wasting the other one's space. */ | |
1295 | ||
6a0d0ed3 KH |
1296 | #ifdef nec_ews_svr4 |
1297 | extern char *_sobuf ; | |
1298 | #else | |
86a5659e JB |
1299 | #if defined (USG) || defined (DGUX) |
1300 | unsigned char _sobuf[BUFSIZ+8]; | |
1301 | #else | |
1302 | char _sobuf[BUFSIZ]; | |
1303 | #endif | |
6a0d0ed3 | 1304 | #endif |
86a5659e | 1305 | |
50b8cf60 | 1306 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1307 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1308 | #endif | |
50b8cf60 | 1309 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1310 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
86a5659e JB |
1311 | #endif |
1312 | ||
08633194 | 1313 | void |
86a5659e JB |
1314 | init_sys_modes () |
1315 | { | |
91bac16a JB |
1316 | struct emacs_tty tty; |
1317 | ||
e0f712ba | 1318 | #ifdef MAC_OS8 |
1a578e9b | 1319 | /* cus-start.el complains if delete-exited-processes is not defined */ |
c4ea52a6 RS |
1320 | #ifndef subprocesses |
1321 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
dfe45eff PJ |
1322 | doc: /* *Non-nil means delete processes immediately when they exit. |
1323 | nil means don't delete them until `list-processes' is run. */); | |
c4ea52a6 RS |
1324 | delete_exited_processes = 0; |
1325 | #endif | |
e0f712ba | 1326 | #endif /* MAC_OS8 */ |
c4ea52a6 | 1327 | |
86a5659e JB |
1328 | #ifdef VMS |
1329 | #if 0 | |
1330 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1331 | extern int (*interrupt_signal) (); | |
1332 | #endif | |
1333 | #endif | |
1334 | ||
4ec5cb58 RS |
1335 | Vtty_erase_char = Qnil; |
1336 | ||
86a5659e JB |
1337 | if (noninteractive) |
1338 | return; | |
1339 | ||
1340 | #ifdef VMS | |
1341 | if (!input_ef) | |
1342 | input_ef = get_kbd_event_flag (); | |
1343 | /* LIB$GET_EF (&input_ef); */ | |
1344 | SYS$CLREF (input_ef); | |
1345 | waiting_for_ast = 0; | |
1346 | if (!timer_ef) | |
1347 | timer_ef = get_timer_event_flag (); | |
1348 | /* LIB$GET_EF (&timer_ef); */ | |
1349 | SYS$CLREF (timer_ef); | |
210b2b4f | 1350 | #if 0 |
86a5659e JB |
1351 | if (!process_ef) |
1352 | { | |
1353 | LIB$GET_EF (&process_ef); | |
1354 | SYS$CLREF (process_ef); | |
1355 | } | |
1356 | if (input_ef / 32 != process_ef / 32) | |
1357 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1358 | #endif |
86a5659e | 1359 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1360 | croak ("Input and timer event flags in different clusters."); |
1361 | #if 0 | |
86a5659e JB |
1362 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1363 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1364 | #endif |
86a5659e JB |
1365 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1366 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1367 | #ifndef VMS4_4 |
1368 | sys_access_reinit (); | |
1369 | #endif | |
86a5659e | 1370 | #endif /* not VMS */ |
91bac16a | 1371 | |
0ba73609 | 1372 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1373 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1374 | narrow_foreground_group (); | |
1375 | #endif | |
1376 | ||
23cafe43 | 1377 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1378 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1379 | needs the initialization code below. */ | |
86a5659e | 1380 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1381 | #endif |
86a5659e | 1382 | { |
23dab951 RS |
1383 | EMACS_GET_TTY (input_fd, &old_tty); |
1384 | ||
7e32a4fb KH |
1385 | old_tty_valid = 1; |
1386 | ||
91bac16a | 1387 | tty = old_tty; |
86a5659e | 1388 | |
31be8d24 | 1389 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2e34157c | 1390 | XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); |
4ec5cb58 | 1391 | |
421dd92f RS |
1392 | #ifdef DGUX |
1393 | /* This allows meta to be sent on 8th bit. */ | |
1394 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1395 | #endif | |
91bac16a JB |
1396 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1397 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1398 | #ifdef INLCR /* I'm just being cautious, |
1399 | since I can't check how widespread INLCR is--rms. */ | |
1400 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
1401 | #endif | |
86a5659e | 1402 | #ifdef ISTRIP |
91bac16a | 1403 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1404 | #endif |
91bac16a JB |
1405 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1406 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1407 | #ifdef IEXTEN |
b26bc18b | 1408 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1409 | #endif |
91bac16a | 1410 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1411 | if (flow_control) |
1412 | { | |
91bac16a | 1413 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1414 | #ifdef IXANY |
91bac16a | 1415 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1416 | #endif /* IXANY */ |
1417 | } | |
1418 | else | |
91bac16a JB |
1419 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1420 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1421 | on output */ | |
1422 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1423 | #ifdef CS8 |
1424 | if (meta_key) | |
1425 | { | |
91bac16a JB |
1426 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1427 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1428 | } |
1429 | #endif | |
91bac16a | 1430 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1431 | /* Set up C-g for both SIGQUIT and SIGINT. |
1432 | We don't know which we will get, but we handle both alike | |
1433 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1434 | tty.main.c_cc[VQUIT] = quit_char; |
1435 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1436 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1437 | #ifdef VSWTCH |
e2b40c23 | 1438 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1439 | of C-z */ |
86a5659e | 1440 | #endif /* VSWTCH */ |
c179a6d1 | 1441 | |
86a5659e | 1442 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1443 | #ifdef VSUSP |
e2b40c23 | 1444 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1445 | #endif /* VSUSP */ |
1446 | #ifdef V_DSUSP | |
e2b40c23 | 1447 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1448 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1449 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1450 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1451 | #endif /* VDSUSP */ | |
92c995de RS |
1452 | #ifdef VLNEXT |
1453 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1454 | #endif /* VLNEXT */ | |
1455 | #ifdef VREPRINT | |
1456 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1457 | #endif /* VREPRINT */ | |
1458 | #ifdef VWERASE | |
1459 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1460 | #endif /* VWERASE */ | |
1461 | #ifdef VDISCARD | |
1462 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1463 | #endif /* VDISCARD */ | |
c179a6d1 RS |
1464 | |
1465 | if (flow_control) | |
1466 | { | |
421dd92f | 1467 | #ifdef VSTART |
c179a6d1 | 1468 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1469 | #endif /* VSTART */ |
1470 | #ifdef VSTOP | |
c179a6d1 | 1471 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1472 | #endif /* VSTOP */ |
c179a6d1 RS |
1473 | } |
1474 | else | |
1475 | { | |
1476 | #ifdef VSTART | |
1477 | tty.main.c_cc[VSTART] = CDISABLE; | |
1478 | #endif /* VSTART */ | |
1479 | #ifdef VSTOP | |
1480 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1481 | #endif /* VSTOP */ | |
1482 | } | |
86a5659e | 1483 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1484 | |
441f6399 | 1485 | #ifdef SET_LINE_DISCIPLINE |
ea5a0917 | 1486 | /* Need to explicitly request TERMIODISC line discipline or |
441f6399 RS |
1487 | Ultrix's termios does not work correctly. */ |
1488 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1489 | #endif | |
86a5659e JB |
1490 | #ifdef AIX |
1491 | #ifndef IBMR2AIX | |
441f6399 | 1492 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1493 | tty.main.c_line = 0; |
1494 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1495 | #else |
91bac16a JB |
1496 | tty.main.c_cc[VSTRT] = 255; |
1497 | tty.main.c_cc[VSTOP] = 255; | |
1498 | tty.main.c_cc[VSUSP] = 255; | |
1499 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e | 1500 | #endif /* IBMR2AIX */ |
ac567c95 RS |
1501 | if (flow_control) |
1502 | { | |
1503 | #ifdef VSTART | |
1504 | tty.main.c_cc[VSTART] = '\021'; | |
1505 | #endif /* VSTART */ | |
1506 | #ifdef VSTOP | |
1507 | tty.main.c_cc[VSTOP] = '\023'; | |
1508 | #endif /* VSTOP */ | |
1509 | } | |
86a5659e JB |
1510 | /* Also, PTY overloads NUL and BREAK. |
1511 | don't ignore break, but don't signal either, so it looks like NUL. | |
1512 | This really serves a purpose only if running in an XTERM window | |
1513 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1514 | tty.main.c_iflag &= ~IGNBRK; |
1515 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1516 | #endif |
1517 | #else /* if not HAVE_TERMIO */ | |
1518 | #ifdef VMS | |
91bac16a | 1519 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1520 | if (meta_key) |
986ffb24 | 1521 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1522 | if (flow_control) |
91bac16a | 1523 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1524 | else |
91bac16a JB |
1525 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1526 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1527 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1528 | #ifndef DOS_NT |
a61e51f0 | 1529 | XSETINT (Vtty_erase_char, tty.main.sg_erase); |
91bac16a | 1530 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1531 | if (meta_key) |
91bac16a JB |
1532 | tty.main.sg_flags |= ANYP; |
1533 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1534 | #endif /* not DOS_NT */ |
86a5659e JB |
1535 | #endif /* not VMS (BSD, that is) */ |
1536 | #endif /* not HAVE_TERMIO */ | |
1537 | ||
91bac16a JB |
1538 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1539 | and turn off start and stop chars, etc. If not going to use | |
1540 | CBREAK mode, do this anyway so as to turn off local flow | |
1541 | control for user coming over network on 4.2; in this case, | |
1542 | only t_stopc and t_startc really matter. */ | |
1543 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1544 | #ifdef HAVE_TCHARS |
91bac16a JB |
1545 | /* Note: if not using CBREAK mode, it makes no difference how we |
1546 | set this */ | |
1547 | tty.tchars = new_tchars; | |
1548 | tty.tchars.t_intrc = quit_char; | |
1549 | if (flow_control) | |
1550 | { | |
1551 | tty.tchars.t_startc = '\021'; | |
1552 | tty.tchars.t_stopc = '\023'; | |
1553 | } | |
1554 | ||
91bac16a | 1555 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1556 | #ifdef ultrix |
1557 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1558 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1559 | tty.lmode &= ~LLITOUT; | |
1560 | #endif | |
91bac16a JB |
1561 | |
1562 | #ifdef BSD4_1 | |
1563 | lmode = tty.lmode; | |
1564 | #endif | |
1565 | ||
50b8cf60 | 1566 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1567 | #endif /* not HAVE_TERMIO */ |
1568 | ||
50b8cf60 | 1569 | #ifdef HAVE_LTCHARS |
91bac16a | 1570 | tty.ltchars = new_ltchars; |
50b8cf60 | 1571 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1572 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1573 | if (!term_initted) |
1574 | internal_terminal_init (); | |
207bdbdb RS |
1575 | dos_ttraw (); |
1576 | #endif | |
91bac16a JB |
1577 | |
1578 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1579 | |
1580 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1581 | we have an unlocked terminal at the start. */ |
91bac16a | 1582 | |
86a5659e | 1583 | #ifdef TCXONC |
64e971c3 | 1584 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1585 | #endif |
1586 | #ifndef APOLLO | |
1587 | #ifdef TIOCSTART | |
64e971c3 | 1588 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1589 | #endif |
1590 | #endif | |
1591 | ||
d228f207 | 1592 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1593 | #ifdef TCOON |
d228f207 RS |
1594 | if (!flow_control) tcflow (input_fd, TCOON); |
1595 | #endif | |
51417996 | 1596 | #endif |
d228f207 | 1597 | |
b97ab886 | 1598 | #ifdef AIXHFT |
86a5659e JB |
1599 | hft_init (); |
1600 | #ifdef IBMR2AIX | |
1601 | { | |
1602 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1603 | to be only LF. This is the way that is done. */ | |
1604 | struct termio tty; | |
1605 | ||
1606 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1607 | write (1, "\033[20l", 5); | |
1608 | } | |
1609 | #endif | |
b97ab886 | 1610 | #endif /* AIXHFT */ |
86a5659e | 1611 | |
86a5659e JB |
1612 | #ifdef VMS |
1613 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1614 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1615 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1616 | */ | |
1617 | queue_kbd_input (0); | |
1618 | #endif /* VMS */ | |
1619 | } | |
1620 | ||
1621 | #ifdef F_SETFL | |
46f2fdac | 1622 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1623 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1624 | if (interrupt_input |
1625 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1626 | { |
64e971c3 RS |
1627 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1628 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1629 | init_sigio (input_fd); |
86a5659e JB |
1630 | } |
1631 | #endif /* F_GETOWN */ | |
46f2fdac | 1632 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1633 | #endif /* F_SETFL */ |
1634 | ||
1635 | #ifdef BSD4_1 | |
1636 | if (interrupt_input) | |
23dab951 | 1637 | init_sigio (input_fd); |
86a5659e JB |
1638 | #endif |
1639 | ||
1640 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1641 | #undef _IOFBF | |
1642 | #endif | |
1643 | #ifdef _IOFBF | |
1644 | /* This symbol is defined on recent USG systems. | |
1645 | Someone says without this call USG won't really buffer the file | |
1646 | even with a call to setbuf. */ | |
074c438c | 1647 | setvbuf (stdout, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1648 | #else |
074c438c | 1649 | setbuf (stdout, (char *) _sobuf); |
86a5659e | 1650 | #endif |
23cafe43 | 1651 | #ifdef HAVE_WINDOW_SYSTEM |
c4295188 KS |
1652 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1653 | needs the initialization code below. */ | |
ad00c243 GV |
1654 | if (EQ (Vwindow_system, Qnil) |
1655 | #ifndef WINDOWSNT | |
1656 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1657 | hook, but still need the rest of the initialization code below. */ | |
1658 | && (! read_socket_hook) | |
1659 | #endif | |
1660 | ) | |
c4295188 | 1661 | #endif |
4b311aaf RS |
1662 | set_terminal_modes (); |
1663 | ||
045942b2 EZ |
1664 | if (!term_initted |
1665 | && FRAMEP (Vterminal_frame) | |
1666 | && FRAME_TERMCAP_P (XFRAME (Vterminal_frame))) | |
1667 | init_frame_faces (XFRAME (Vterminal_frame)); | |
1668 | ||
86a5659e JB |
1669 | if (term_initted && no_redraw_on_reenter) |
1670 | { | |
1671 | if (display_completed) | |
1672 | direct_output_forward_char (0); | |
1673 | } | |
1674 | else | |
1675 | { | |
0137dbf7 | 1676 | frame_garbaged = 1; |
0137dbf7 JB |
1677 | if (FRAMEP (Vterminal_frame)) |
1678 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e | 1679 | } |
91bac16a | 1680 | |
86a5659e JB |
1681 | term_initted = 1; |
1682 | } | |
1683 | ||
1684 | /* Return nonzero if safe to use tabs in output. | |
1685 | At the time this is called, init_sys_modes has not been done yet. */ | |
1686 | ||
dfcf069d | 1687 | int |
86a5659e JB |
1688 | tabs_safe_p () |
1689 | { | |
91bac16a JB |
1690 | struct emacs_tty tty; |
1691 | ||
1692 | EMACS_GET_TTY (input_fd, &tty); | |
1693 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1694 | } |
73d5358f | 1695 | \f |
86a5659e | 1696 | /* Get terminal size from system. |
73d5358f RS |
1697 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1698 | We store 0 if there's no valid information. */ | |
86a5659e | 1699 | |
08633194 | 1700 | void |
0137dbf7 | 1701 | get_frame_size (widthp, heightp) |
86a5659e JB |
1702 | int *widthp, *heightp; |
1703 | { | |
86a5659e | 1704 | |
86a5659e | 1705 | #ifdef TIOCGWINSZ |
91bac16a JB |
1706 | |
1707 | /* BSD-style. */ | |
86a5659e | 1708 | struct winsize size; |
91bac16a JB |
1709 | |
1710 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1711 | *widthp = *heightp = 0; | |
1712 | else | |
1713 | { | |
1714 | *widthp = size.ws_col; | |
1715 | *heightp = size.ws_row; | |
1716 | } | |
1717 | ||
1718 | #else | |
1719 | #ifdef TIOCGSIZE | |
1720 | ||
1721 | /* SunOS - style. */ | |
1722 | struct ttysize size; | |
1723 | ||
1724 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1725 | *widthp = *heightp = 0; | |
1726 | else | |
1727 | { | |
1728 | *widthp = size.ts_cols; | |
1729 | *heightp = size.ts_lines; | |
1730 | } | |
1731 | ||
1732 | #else | |
86a5659e | 1733 | #ifdef VMS |
91bac16a JB |
1734 | |
1735 | struct sensemode tty; | |
1736 | ||
1737 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1738 | &tty.class, 12, 0, 0, 0, 0); |
1739 | *widthp = tty.scr_wid; | |
1740 | *heightp = tty.scr_len; | |
91bac16a | 1741 | |
207bdbdb RS |
1742 | #else |
1743 | #ifdef MSDOS | |
1744 | *widthp = ScreenCols (); | |
1745 | *heightp = ScreenRows (); | |
86a5659e JB |
1746 | #else /* system doesn't know size */ |
1747 | *widthp = 0; | |
1748 | *heightp = 0; | |
207bdbdb | 1749 | #endif |
91bac16a JB |
1750 | |
1751 | #endif /* not VMS */ | |
1752 | #endif /* not SunOS-style */ | |
1753 | #endif /* not BSD-style */ | |
86a5659e | 1754 | } |
91bac16a | 1755 | |
73d5358f RS |
1756 | /* Set the logical window size associated with descriptor FD |
1757 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1758 | ||
1759 | int | |
1760 | set_window_size (fd, height, width) | |
1761 | int fd, height, width; | |
1762 | { | |
1763 | #ifdef TIOCSWINSZ | |
1764 | ||
1765 | /* BSD-style. */ | |
1766 | struct winsize size; | |
1767 | size.ws_row = height; | |
1768 | size.ws_col = width; | |
1769 | ||
1770 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1771 | return 0; /* error */ | |
1772 | else | |
1773 | return 1; | |
1774 | ||
1775 | #else | |
1776 | #ifdef TIOCSSIZE | |
1777 | ||
1778 | /* SunOS - style. */ | |
1779 | struct ttysize size; | |
1780 | size.ts_lines = height; | |
1781 | size.ts_cols = width; | |
1782 | ||
1783 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1784 | return 0; | |
1785 | else | |
1786 | return 1; | |
1787 | #else | |
1788 | return -1; | |
1789 | #endif /* not SunOS-style */ | |
1790 | #endif /* not BSD-style */ | |
1791 | } | |
1792 | ||
86a5659e | 1793 | \f |
91bac16a | 1794 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1795 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
08633194 | 1796 | void |
86a5659e JB |
1797 | reset_sys_modes () |
1798 | { | |
2d064114 GM |
1799 | struct frame *sf; |
1800 | ||
86a5659e JB |
1801 | if (noninteractive) |
1802 | { | |
1803 | fflush (stdout); | |
1804 | return; | |
1805 | } | |
1806 | if (!term_initted) | |
1807 | return; | |
23cafe43 | 1808 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1809 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1810 | needs the clean-up code below. */ | |
ad00c243 GV |
1811 | if (!EQ (Vwindow_system, Qnil) |
1812 | #ifndef WINDOWSNT | |
1813 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1814 | hook, but still need the rest of the clean-up code below. */ | |
1815 | || read_socket_hook | |
1816 | #endif | |
1817 | ) | |
86a5659e | 1818 | return; |
87485d6f | 1819 | #endif |
2d064114 GM |
1820 | sf = SELECTED_FRAME (); |
1821 | cursor_to (FRAME_HEIGHT (sf) - 1, 0); | |
1822 | clear_end_of_line (FRAME_WIDTH (sf)); | |
86a5659e | 1823 | /* clear_end_of_line may move the cursor */ |
2d064114 | 1824 | cursor_to (FRAME_HEIGHT (sf) - 1, 0); |
b97ab886 | 1825 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e JB |
1826 | { |
1827 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1828 | do the LF only. Now, we need to reset it. */ | |
1829 | struct termio tty; | |
1830 | ||
1831 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1832 | write (1, "\033[20h", 5); | |
1833 | } | |
1834 | #endif | |
1835 | ||
1836 | reset_terminal_modes (); | |
1837 | fflush (stdout); | |
2a633456 | 1838 | #ifdef BSD_SYSTEM |
86a5659e JB |
1839 | #ifndef BSD4_1 |
1840 | /* Avoid possible loss of output when changing terminal modes. */ | |
1841 | fsync (fileno (stdout)); | |
1842 | #endif | |
1843 | #endif | |
91bac16a | 1844 | |
86a5659e | 1845 | #ifdef F_SETFL |
46f2fdac | 1846 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1847 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1848 | if (interrupt_input) |
1849 | { | |
1850 | reset_sigio (); | |
64e971c3 | 1851 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1852 | } |
1853 | #endif /* F_SETOWN */ | |
46f2fdac | 1854 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1855 | #ifdef O_NDELAY |
1856 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1857 | #endif | |
86a5659e JB |
1858 | #endif /* F_SETFL */ |
1859 | #ifdef BSD4_1 | |
1860 | if (interrupt_input) | |
1861 | reset_sigio (); | |
1862 | #endif /* BSD4_1 */ | |
91bac16a | 1863 | |
7e32a4fb KH |
1864 | if (old_tty_valid) |
1865 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) | |
1866 | ; | |
86a5659e | 1867 | |
207bdbdb RS |
1868 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1869 | dos_ttcooked (); | |
1870 | #endif | |
1871 | ||
441f6399 RS |
1872 | #ifdef SET_LINE_DISCIPLINE |
1873 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1874 | A different old line discipline is therefore not restored, yet. | |
1875 | Restore the old line discipline by hand. */ | |
1876 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1877 | #endif | |
1878 | ||
b97ab886 | 1879 | #ifdef AIXHFT |
86a5659e JB |
1880 | hft_reset (); |
1881 | #endif | |
9ae8f997 | 1882 | |
0ba73609 | 1883 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1884 | widen_foreground_group (); |
1885 | #endif | |
86a5659e JB |
1886 | } |
1887 | \f | |
1888 | #ifdef HAVE_PTYS | |
1889 | ||
1890 | /* Set up the proper status flags for use of a pty. */ | |
1891 | ||
08633194 | 1892 | void |
86a5659e JB |
1893 | setup_pty (fd) |
1894 | int fd; | |
1895 | { | |
1896 | /* I'm told that TOICREMOTE does not mean control chars | |
1897 | "can't be sent" but rather that they don't have | |
1898 | input-editing or signaling effects. | |
1899 | That should be good, because we have other ways | |
1900 | to do those things in Emacs. | |
1901 | However, telnet mode seems not to work on 4.2. | |
1902 | So TIOCREMOTE is turned off now. */ | |
1903 | ||
1904 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1905 | will hang. In particular, the "timeout" feature (which | |
1906 | causes a read to return if there is no data available) | |
1907 | does this. Also it is known that telnet mode will hang | |
1908 | in such a way that Emacs must be stopped (perhaps this | |
1909 | is the same problem). | |
1910 | ||
1911 | If TIOCREMOTE is turned off, then there is a bug in | |
1912 | hp-ux which sometimes loses data. Apparently the | |
1913 | code which blocks the master process when the internal | |
1914 | buffer fills up does not work. Other than this, | |
1915 | though, everything else seems to work fine. | |
1916 | ||
1917 | Since the latter lossage is more benign, we may as well | |
1918 | lose that way. -- cph */ | |
1919 | #ifdef FIONBIO | |
e20caf05 | 1920 | #if defined(SYSV_PTYS) || defined(UNIX98_PTYS) |
86a5659e JB |
1921 | { |
1922 | int on = 1; | |
1923 | ioctl (fd, FIONBIO, &on); | |
1924 | } | |
1925 | #endif | |
1926 | #endif | |
1927 | #ifdef IBMRTAIX | |
1928 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1929 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1930 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1931 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1932 | /* change this behavior, but I'm not going to hold my breath. */ | |
1933 | signal (SIGHUP, SIG_IGN); | |
1934 | #endif | |
1935 | } | |
1936 | #endif /* HAVE_PTYS */ | |
1937 | \f | |
1938 | #ifdef VMS | |
1939 | ||
1940 | /* Assigning an input channel is done at the start of Emacs execution. | |
1941 | This is called each time Emacs is resumed, also, but does nothing | |
1942 | because input_chain is no longer zero. */ | |
1943 | ||
dfcf069d | 1944 | void |
86a5659e JB |
1945 | init_vms_input () |
1946 | { | |
1947 | int status; | |
1948 | ||
91bac16a | 1949 | if (input_fd == 0) |
86a5659e | 1950 | { |
91bac16a | 1951 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1952 | if (! (status & 1)) |
1953 | LIB$STOP (status); | |
1954 | } | |
1955 | } | |
1956 | ||
1957 | /* Deassigning the input channel is done before exiting. */ | |
1958 | ||
dfcf069d | 1959 | void |
86a5659e JB |
1960 | stop_vms_input () |
1961 | { | |
91bac16a | 1962 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1963 | } |
1964 | ||
1965 | short input_buffer; | |
1966 | ||
1967 | /* Request reading one character into the keyboard buffer. | |
1968 | This is done as soon as the buffer becomes empty. */ | |
1969 | ||
dfcf069d | 1970 | void |
86a5659e JB |
1971 | queue_kbd_input () |
1972 | { | |
1973 | int status; | |
210b2b4f JB |
1974 | extern kbd_input_ast (); |
1975 | ||
86a5659e JB |
1976 | waiting_for_ast = 0; |
1977 | stop_input = 0; | |
91bac16a | 1978 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1979 | &input_iosb, kbd_input_ast, 1, |
1980 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1981 | } | |
1982 | ||
1983 | int input_count; | |
1984 | ||
1985 | /* Ast routine that is called when keyboard input comes in | |
1986 | in accord with the SYS$QIO above. */ | |
1987 | ||
dfcf069d | 1988 | void |
86a5659e JB |
1989 | kbd_input_ast () |
1990 | { | |
1991 | register int c = -1; | |
1992 | int old_errno = errno; | |
ffd56f97 | 1993 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1994 | |
1995 | if (waiting_for_ast) | |
1996 | SYS$SETEF (input_ef); | |
1997 | waiting_for_ast = 0; | |
1998 | input_count++; | |
1999 | #ifdef ASTDEBUG | |
2000 | if (input_count == 25) | |
2001 | exit (1); | |
2002 | printf ("Ast # %d,", input_count); | |
2003 | printf (" iosb = %x, %x, %x, %x", | |
2004 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
2005 | input_iosb.term); | |
2006 | #endif | |
2007 | if (input_iosb.offset) | |
2008 | { | |
2009 | c = input_buffer; | |
2010 | #ifdef ASTDEBUG | |
2011 | printf (", char = 0%o", c); | |
2012 | #endif | |
2013 | } | |
2014 | #ifdef ASTDEBUG | |
2015 | printf ("\n"); | |
2016 | fflush (stdout); | |
2017 | sleep (1); | |
2018 | #endif | |
2019 | if (! stop_input) | |
2020 | queue_kbd_input (); | |
2021 | if (c >= 0) | |
2022 | { | |
2023 | struct input_event e; | |
e43bd4f5 | 2024 | e.kind = ASCII_KEYSTROKE_EVENT; |
c81d47b4 | 2025 | XSETINT (e.code, c); |
2d064114 | 2026 | e.frame_or_window = selected_frame; |
86a5659e JB |
2027 | kbd_buffer_store_event (&e); |
2028 | } | |
ffd56f97 JB |
2029 | if (input_available_clear_time) |
2030 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
2031 | errno = old_errno; |
2032 | } | |
2033 | ||
2034 | /* Wait until there is something in kbd_buffer. */ | |
2035 | ||
dfcf069d | 2036 | void |
86a5659e JB |
2037 | wait_for_kbd_input () |
2038 | { | |
2039 | extern int have_process_input, process_exited; | |
2040 | ||
2041 | /* If already something, avoid doing system calls. */ | |
2042 | if (detect_input_pending ()) | |
2043 | { | |
2044 | return; | |
2045 | } | |
2046 | /* Clear a flag, and tell ast routine above to set it. */ | |
2047 | SYS$CLREF (input_ef); | |
2048 | waiting_for_ast = 1; | |
2049 | /* Check for timing error: ast happened while we were doing that. */ | |
2050 | if (!detect_input_pending ()) | |
2051 | { | |
2052 | /* No timing error: wait for flag to be set. */ | |
2053 | set_waiting_for_input (0); | |
2054 | SYS$WFLOR (input_ef, input_eflist); | |
61851c0e | 2055 | clear_waiting_for_input (); |
86a5659e JB |
2056 | if (!detect_input_pending ()) |
2057 | /* Check for subprocess input availability */ | |
2058 | { | |
2059 | int dsp = have_process_input || process_exited; | |
2060 | ||
2061 | SYS$CLREF (process_ef); | |
2062 | if (have_process_input) | |
2063 | process_command_input (); | |
2064 | if (process_exited) | |
2065 | process_exit (); | |
2066 | if (dsp) | |
2067 | { | |
2068 | update_mode_lines++; | |
56b18525 | 2069 | prepare_menu_bars (); |
3007ebfb | 2070 | redisplay_preserve_echo_area (18); |
86a5659e JB |
2071 | } |
2072 | } | |
2073 | } | |
2074 | waiting_for_ast = 0; | |
2075 | } | |
2076 | ||
2077 | /* Get rid of any pending QIO, when we are about to suspend | |
2078 | or when we want to throw away pending input. | |
2079 | We wait for a positive sign that the AST routine has run | |
2080 | and therefore there is no I/O request queued when we return. | |
2081 | SYS$SETAST is used to avoid a timing error. */ | |
2082 | ||
dfcf069d | 2083 | void |
86a5659e JB |
2084 | end_kbd_input () |
2085 | { | |
2086 | #ifdef ASTDEBUG | |
2087 | printf ("At end_kbd_input.\n"); | |
2088 | fflush (stdout); | |
2089 | sleep (1); | |
2090 | #endif | |
2091 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
2092 | { | |
91bac16a | 2093 | SYS$CANCEL (input_fd); |
86a5659e JB |
2094 | return; |
2095 | } | |
2096 | ||
2097 | SYS$SETAST (0); | |
2098 | /* Clear a flag, and tell ast routine above to set it. */ | |
2099 | SYS$CLREF (input_ef); | |
2100 | waiting_for_ast = 1; | |
2101 | stop_input = 1; | |
91bac16a | 2102 | SYS$CANCEL (input_fd); |
86a5659e JB |
2103 | SYS$SETAST (1); |
2104 | SYS$WAITFR (input_ef); | |
2105 | waiting_for_ast = 0; | |
2106 | } | |
2107 | ||
2108 | /* Wait for either input available or time interval expiry. */ | |
2109 | ||
dfcf069d | 2110 | void |
86a5659e JB |
2111 | input_wait_timeout (timeval) |
2112 | int timeval; /* Time to wait, in seconds */ | |
2113 | { | |
2114 | int time [2]; | |
2115 | static int zero = 0; | |
2116 | static int large = -10000000; | |
2117 | ||
2118 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2119 | ||
2120 | /* If already something, avoid doing system calls. */ | |
2121 | if (detect_input_pending ()) | |
2122 | { | |
2123 | return; | |
2124 | } | |
2125 | /* Clear a flag, and tell ast routine above to set it. */ | |
2126 | SYS$CLREF (input_ef); | |
2127 | waiting_for_ast = 1; | |
2128 | /* Check for timing error: ast happened while we were doing that. */ | |
2129 | if (!detect_input_pending ()) | |
2130 | { | |
2131 | /* No timing error: wait for flag to be set. */ | |
2132 | SYS$CANTIM (1, 0); | |
2133 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2134 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2135 | } | |
2136 | waiting_for_ast = 0; | |
2137 | } | |
2138 | ||
2139 | /* The standard `sleep' routine works some other way | |
2140 | and it stops working if you have ever quit out of it. | |
2141 | This one continues to work. */ | |
2142 | ||
2143 | sys_sleep (timeval) | |
2144 | int timeval; | |
2145 | { | |
2146 | int time [2]; | |
2147 | static int zero = 0; | |
2148 | static int large = -10000000; | |
2149 | ||
2150 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2151 | ||
2152 | SYS$CANTIM (1, 0); | |
2153 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2154 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2155 | } | |
2156 | ||
08633194 | 2157 | void |
23dab951 RS |
2158 | init_sigio (fd) |
2159 | int fd; | |
86a5659e JB |
2160 | { |
2161 | request_sigio (); | |
2162 | } | |
2163 | ||
2164 | reset_sigio () | |
2165 | { | |
2166 | unrequest_sigio (); | |
2167 | } | |
2168 | ||
08633194 | 2169 | void |
86a5659e JB |
2170 | request_sigio () |
2171 | { | |
2172 | croak ("request sigio"); | |
2173 | } | |
2174 | ||
08633194 | 2175 | void |
86a5659e JB |
2176 | unrequest_sigio () |
2177 | { | |
2178 | croak ("unrequest sigio"); | |
2179 | } | |
2180 | ||
2181 | #endif /* VMS */ | |
2182 | \f | |
2183 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2184 | #ifndef CANNOT_DUMP | |
2185 | #define NEED_STARTS | |
2186 | #endif | |
2187 | ||
2188 | #ifndef SYSTEM_MALLOC | |
2189 | #ifndef NEED_STARTS | |
2190 | #define NEED_STARTS | |
2191 | #endif | |
2192 | #endif | |
2193 | ||
2194 | #ifdef NEED_STARTS | |
2195 | /* Some systems that cannot dump also cannot implement these. */ | |
2196 | ||
2197 | /* | |
2198 | * Return the address of the start of the text segment prior to | |
2199 | * doing an unexec. After unexec the return value is undefined. | |
2200 | * See crt0.c for further explanation and _start. | |
2201 | * | |
2202 | */ | |
2203 | ||
c0c9ac48 | 2204 | #if !(defined (__NetBSD__) && defined (__ELF__)) |
260fe597 | 2205 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2206 | char * |
2207 | start_of_text () | |
2208 | { | |
2209 | #ifdef TEXT_START | |
2210 | return ((char *) TEXT_START); | |
2211 | #else | |
2212 | #ifdef GOULD | |
2213 | extern csrt (); | |
2214 | return ((char *) csrt); | |
2215 | #else /* not GOULD */ | |
2216 | extern int _start (); | |
2217 | return ((char *) _start); | |
2218 | #endif /* GOULD */ | |
2219 | #endif /* TEXT_START */ | |
2220 | } | |
260fe597 | 2221 | #endif /* not HAVE_TEXT_START */ |
c0c9ac48 | 2222 | #endif |
86a5659e JB |
2223 | |
2224 | /* | |
2225 | * Return the address of the start of the data segment prior to | |
2226 | * doing an unexec. After unexec the return value is undefined. | |
2227 | * See crt0.c for further information and definition of data_start. | |
2228 | * | |
2229 | * Apparently, on BSD systems this is etext at startup. On | |
2230 | * USG systems (swapping) this is highly mmu dependent and | |
2231 | * is also dependent on whether or not the program is running | |
2232 | * with shared text. Generally there is a (possibly large) | |
2233 | * gap between end of text and start of data with shared text. | |
2234 | * | |
2235 | * On Uniplus+ systems with shared text, data starts at a | |
2236 | * fixed address. Each port (from a given oem) is generally | |
2237 | * different, and the specific value of the start of data can | |
2238 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2239 | * however the method outlined in crt0.c seems to be more portable. | |
2240 | * | |
2241 | * Probably what will have to happen when a USG unexec is available, | |
2242 | * at least on UniPlus, is temacs will have to be made unshared so | |
2243 | * that text and data are contiguous. Then once loadup is complete, | |
2244 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2245 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2246 | * will be patched by unexec to the correct value. |
2247 | * | |
2248 | */ | |
2249 | ||
be3abfa2 | 2250 | #ifndef start_of_data |
86a5659e JB |
2251 | char * |
2252 | start_of_data () | |
2253 | { | |
2254 | #ifdef DATA_START | |
2255 | return ((char *) DATA_START); | |
6c65530f JB |
2256 | #else |
2257 | #ifdef ORDINARY_LINK | |
2258 | /* | |
2259 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2260 | * data_start isn't defined. We take the address of environ, which | |
2261 | * is known to live at or near the start of the system crt0.c, and | |
2262 | * we don't sweat the handful of bytes that might lose. | |
2263 | */ | |
2264 | extern char **environ; | |
2265 | ||
c4ea52a6 | 2266 | return ((char *) &environ); |
86a5659e JB |
2267 | #else |
2268 | extern int data_start; | |
2269 | return ((char *) &data_start); | |
6c65530f JB |
2270 | #endif /* ORDINARY_LINK */ |
2271 | #endif /* DATA_START */ | |
86a5659e | 2272 | } |
be3abfa2 | 2273 | #endif /* start_of_data */ |
86a5659e | 2274 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ |
86a5659e | 2275 | \f |
c0c86835 KH |
2276 | /* init_system_name sets up the string for the Lisp function |
2277 | system-name to return. */ | |
86a5659e JB |
2278 | |
2279 | #ifdef BSD4_1 | |
2280 | #include <whoami.h> | |
2281 | #endif | |
2282 | ||
c0c86835 | 2283 | extern Lisp_Object Vsystem_name; |
86a5659e | 2284 | |
f8a80313 | 2285 | #ifndef BSD4_1 |
f8a80313 RS |
2286 | #ifndef VMS |
2287 | #ifdef HAVE_SOCKETS | |
2288 | #include <sys/socket.h> | |
2289 | #include <netdb.h> | |
2290 | #endif /* HAVE_SOCKETS */ | |
2291 | #endif /* not VMS */ | |
f8a80313 RS |
2292 | #endif /* not BSD4_1 */ |
2293 | ||
8581cd64 KH |
2294 | #ifdef TRY_AGAIN |
2295 | #ifndef HAVE_H_ERRNO | |
2296 | extern int h_errno; | |
2297 | #endif | |
2298 | #endif /* TRY_AGAIN */ | |
2299 | ||
c0c86835 KH |
2300 | void |
2301 | init_system_name () | |
86a5659e | 2302 | { |
86a5659e | 2303 | #ifdef BSD4_1 |
c0c86835 | 2304 | Vsystem_name = build_string (sysname); |
67004ffb | 2305 | #else |
67004ffb | 2306 | #ifdef VMS |
c0c86835 KH |
2307 | char *sp, *end; |
2308 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2309 | Vsystem_name = build_string ("vax-vms"); | |
2310 | else if ((end = index (sp, ':')) == 0) | |
2311 | Vsystem_name = build_string (sp); | |
2312 | else | |
2313 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2314 | #else |
210b2b4f | 2315 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2316 | struct utsname uts; |
2317 | uname (&uts); | |
2318 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2319 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2320 | unsigned int hostname_size = 256; |
c0c86835 KH |
2321 | char *hostname = (char *) alloca (hostname_size); |
2322 | ||
2323 | /* Try to get the host name; if the buffer is too short, try | |
2324 | again. Apparently, the only indication gethostname gives of | |
2325 | whether the buffer was large enough is the presence or absence | |
2326 | of a '\0' in the string. Eech. */ | |
2327 | for (;;) | |
2328 | { | |
2329 | gethostname (hostname, hostname_size - 1); | |
2330 | hostname[hostname_size - 1] = '\0'; | |
2331 | ||
2332 | /* Was the buffer large enough for the '\0'? */ | |
2333 | if (strlen (hostname) < hostname_size - 1) | |
2334 | break; | |
2335 | ||
2336 | hostname_size <<= 1; | |
2337 | hostname = (char *) alloca (hostname_size); | |
2338 | } | |
67004ffb | 2339 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2340 | /* Turn the hostname into the official, fully-qualified hostname. |
2341 | Don't do this if we're going to dump; this can confuse system | |
2342 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2343 | #ifndef CANNOT_DUMP |
c0c86835 | 2344 | if (initialized) |
67004ffb | 2345 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2346 | if (! index (hostname, '.')) |
2347 | { | |
2348 | struct hostent *hp; | |
2349 | int count; | |
2350 | for (count = 0;; count++) | |
2351 | { | |
e24f1d55 | 2352 | #ifdef TRY_AGAIN |
960d894c | 2353 | h_errno = 0; |
e24f1d55 | 2354 | #endif |
960d894c | 2355 | hp = gethostbyname (hostname); |
efa04277 | 2356 | #ifdef TRY_AGAIN |
960d894c KH |
2357 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2358 | #endif | |
2359 | break; | |
2360 | if (count >= 5) | |
2361 | break; | |
2362 | Fsleep_for (make_number (1), Qnil); | |
2363 | } | |
2364 | if (hp) | |
2365 | { | |
2366 | char *fqdn = (char *) hp->h_name; | |
7c15926f | 2367 | #if 0 |
960d894c | 2368 | char *p; |
7c15926f | 2369 | #endif |
960d894c KH |
2370 | |
2371 | if (!index (fqdn, '.')) | |
2372 | { | |
2373 | /* We still don't have a fully qualified domain name. | |
2374 | Try to find one in the list of alternate names */ | |
2375 | char **alias = hp->h_aliases; | |
2376 | while (*alias && !index (*alias, '.')) | |
2377 | alias++; | |
2378 | if (*alias) | |
2379 | fqdn = *alias; | |
2380 | } | |
2381 | hostname = fqdn; | |
ab1649fe | 2382 | #if 0 |
960d894c KH |
2383 | /* Convert the host name to lower case. */ |
2384 | /* Using ctype.h here would introduce a possible locale | |
2385 | dependence that is probably wrong for hostnames. */ | |
2386 | p = hostname; | |
2387 | while (*p) | |
2388 | { | |
2389 | if (*p >= 'A' && *p <= 'Z') | |
2390 | *p += 'a' - 'A'; | |
2391 | p++; | |
2392 | } | |
2393 | #endif | |
2394 | } | |
2395 | } | |
67004ffb | 2396 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2397 | /* We used to try using getdomainname here, |
2398 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2399 | getdomainname gets the NIS/YP domain which often is not the same |
2400 | as in Internet domain name. */ | |
6250a9db KH |
2401 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2402 | correct Internet domain. */ | |
0b93aa53 | 2403 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2404 | if (! index (hostname, '.')) |
2405 | { | |
2406 | /* The hostname is not fully qualified. Append the domain name. */ | |
2407 | ||
2408 | int hostlen = strlen (hostname); | |
2409 | int domain_size = 256; | |
2410 | ||
2411 | for (;;) | |
2412 | { | |
825e7e55 RS |
2413 | char *domain = (char *) alloca (domain_size + 1); |
2414 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2415 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2416 | if (sys_domain_size <= 0) | |
2417 | break; | |
2418 | if (domain_size < sys_domain_size) | |
2419 | { | |
2420 | domain_size = sys_domain_size; | |
2421 | continue; | |
2422 | } | |
b05af5d3 | 2423 | strcpy (fqdn, hostname); |
825e7e55 RS |
2424 | if (domain[0] == '.') |
2425 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2426 | else if (domain[0] != 0) |
825e7e55 RS |
2427 | { |
2428 | fqdn[hostlen] = '.'; | |
2429 | strcpy (fqdn + hostlen + 1, domain); | |
2430 | } | |
b05af5d3 PE |
2431 | hostname = fqdn; |
2432 | break; | |
2433 | } | |
2434 | } | |
0b93aa53 | 2435 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2436 | #endif /* 0 */ |
c0c86835 | 2437 | Vsystem_name = build_string (hostname); |
67004ffb | 2438 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2439 | #endif /* VMS */ |
67004ffb | 2440 | #endif /* BSD4_1 */ |
c0c86835 KH |
2441 | { |
2442 | unsigned char *p; | |
d5db4077 | 2443 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
2444 | if (*p == ' ' || *p == '\t') |
2445 | *p = '-'; | |
2446 | } | |
67004ffb | 2447 | } |
86a5659e | 2448 | \f |
7964ba9e | 2449 | #ifndef MSDOS |
86a5659e | 2450 | #ifndef VMS |
86d1f23a | 2451 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2452 | |
86d1f23a KH |
2453 | #include "sysselect.h" |
2454 | #undef select | |
2455 | ||
2456 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2457 | /* Cause explanatory error message at compile time, |
2458 | since the select emulation is not good enough for X. */ | |
2459 | int *x = &x_windows_lose_if_no_select_system_call; | |
2460 | #endif | |
2461 | ||
2462 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2463 | * Only checks read descriptors. | |
2464 | */ | |
2465 | /* How long to wait between checking fds in select */ | |
2466 | #define SELECT_PAUSE 1 | |
2467 | int select_alarmed; | |
2468 | ||
2469 | /* For longjmp'ing back to read_input_waiting. */ | |
2470 | ||
2471 | jmp_buf read_alarm_throw; | |
2472 | ||
2473 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2474 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2475 | ||
2476 | int read_alarm_should_throw; | |
2477 | ||
2478 | SIGTYPE | |
2479 | select_alarm () | |
2480 | { | |
2481 | select_alarmed = 1; | |
2482 | #ifdef BSD4_1 | |
2483 | sigrelse (SIGALRM); | |
2484 | #else /* not BSD4_1 */ | |
2485 | signal (SIGALRM, SIG_IGN); | |
2486 | #endif /* not BSD4_1 */ | |
2487 | if (read_alarm_should_throw) | |
2488 | longjmp (read_alarm_throw, 1); | |
2489 | } | |
2490 | ||
fe03522b | 2491 | #ifndef WINDOWSNT |
86a5659e JB |
2492 | /* Only rfds are checked. */ |
2493 | int | |
86d1f23a | 2494 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2495 | int nfds; |
86d1f23a KH |
2496 | SELECT_TYPE *rfds, *wfds, *efds; |
2497 | EMACS_TIME *timeout; | |
86a5659e | 2498 | { |
ffdcc91d | 2499 | int ravail = 0; |
86d1f23a KH |
2500 | SELECT_TYPE orfds; |
2501 | int timeoutval; | |
2502 | int *local_timeout; | |
86a5659e JB |
2503 | extern int proc_buffered_char[]; |
2504 | #ifndef subprocesses | |
2505 | int process_tick = 0, update_tick = 0; | |
2506 | #else | |
2507 | extern int process_tick, update_tick; | |
2508 | #endif | |
86a5659e JB |
2509 | unsigned char buf; |
2510 | ||
86d1f23a KH |
2511 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2512 | /* If we're using X, then the native select will work; we only need the | |
2513 | emulation for non-X usage. */ | |
2514 | if (!NILP (Vwindow_system)) | |
2515 | return select (nfds, rfds, wfds, efds, timeout); | |
2516 | #endif | |
2517 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2518 | local_timeout = &timeoutval; | |
2519 | FD_ZERO (&orfds); | |
86a5659e JB |
2520 | if (rfds) |
2521 | { | |
2522 | orfds = *rfds; | |
86d1f23a | 2523 | FD_ZERO (rfds); |
86a5659e JB |
2524 | } |
2525 | if (wfds) | |
86d1f23a | 2526 | FD_ZERO (wfds); |
86a5659e | 2527 | if (efds) |
86d1f23a | 2528 | FD_ZERO (efds); |
86a5659e JB |
2529 | |
2530 | /* If we are looking only for the terminal, with no timeout, | |
2531 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2532 | if (*local_timeout == 100000 && process_tick == update_tick |
2533 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2534 | { |
86d1f23a KH |
2535 | int fd; |
2536 | for (fd = 1; fd < nfds; ++fd) | |
2537 | if (FD_ISSET (fd, &orfds)) | |
2538 | goto hardway; | |
86a5659e JB |
2539 | if (! detect_input_pending ()) |
2540 | read_input_waiting (); | |
86d1f23a | 2541 | FD_SET (0, rfds); |
86a5659e JB |
2542 | return 1; |
2543 | } | |
2544 | ||
86d1f23a | 2545 | hardway: |
86a5659e JB |
2546 | /* Once a second, till the timer expires, check all the flagged read |
2547 | * descriptors to see if any input is available. If there is some then | |
2548 | * set the corresponding bit in the return copy of rfds. | |
2549 | */ | |
2550 | while (1) | |
2551 | { | |
86d1f23a | 2552 | register int to_check, fd; |
86a5659e JB |
2553 | |
2554 | if (rfds) | |
2555 | { | |
86d1f23a | 2556 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2557 | { |
86d1f23a | 2558 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2559 | { |
2560 | int avail = 0, status = 0; | |
2561 | ||
86d1f23a | 2562 | if (fd == 0) |
86a5659e JB |
2563 | avail = detect_input_pending (); /* Special keyboard handler */ |
2564 | else | |
2565 | { | |
2566 | #ifdef FIONREAD | |
2567 | status = ioctl (fd, FIONREAD, &avail); | |
2568 | #else /* no FIONREAD */ | |
2569 | /* Hoping it will return -1 if nothing available | |
2570 | or 0 if all 0 chars requested are read. */ | |
2571 | if (proc_buffered_char[fd] >= 0) | |
2572 | avail = 1; | |
2573 | else | |
2574 | { | |
2575 | avail = read (fd, &buf, 1); | |
2576 | if (avail > 0) | |
2577 | proc_buffered_char[fd] = buf; | |
2578 | } | |
2579 | #endif /* no FIONREAD */ | |
2580 | } | |
2581 | if (status >= 0 && avail > 0) | |
2582 | { | |
86d1f23a | 2583 | FD_SET (fd, rfds); |
86a5659e JB |
2584 | ravail++; |
2585 | } | |
2586 | } | |
2587 | } | |
2588 | } | |
2589 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2590 | break; | |
ffdcc91d GM |
2591 | |
2592 | turn_on_atimers (0); | |
2593 | signal (SIGALRM, select_alarm); | |
86a5659e JB |
2594 | select_alarmed = 0; |
2595 | alarm (SELECT_PAUSE); | |
ffdcc91d | 2596 | |
86a5659e JB |
2597 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
2598 | while (select_alarmed == 0 && *local_timeout != 0 | |
2599 | && process_tick == update_tick) | |
2600 | { | |
2601 | /* If we are interested in terminal input, | |
2602 | wait by reading the terminal. | |
2603 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2604 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2605 | { |
2606 | read_input_waiting (); | |
2607 | if (detect_input_pending ()) | |
2608 | select_alarmed = 1; | |
2609 | } | |
2610 | else | |
2611 | pause (); | |
2612 | } | |
2613 | (*local_timeout) -= SELECT_PAUSE; | |
ffdcc91d GM |
2614 | |
2615 | /* Reset the old alarm if there was one. */ | |
2616 | turn_on_atimers (1); | |
2617 | ||
86a5659e JB |
2618 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
2619 | break; | |
2620 | } | |
2621 | return ravail; | |
2622 | } | |
fe03522b | 2623 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2624 | |
2625 | /* Read keyboard input into the standard buffer, | |
2626 | waiting for at least one character. */ | |
2627 | ||
23cafe43 GV |
2628 | /* Make all keyboard buffers much bigger when using a window system. */ |
2629 | #ifdef HAVE_WINDOW_SYSTEM | |
86a5659e JB |
2630 | #define BUFFER_SIZE_FACTOR 16 |
2631 | #else | |
2632 | #define BUFFER_SIZE_FACTOR 1 | |
2633 | #endif | |
2634 | ||
dfcf069d | 2635 | void |
86a5659e JB |
2636 | read_input_waiting () |
2637 | { | |
86a5659e | 2638 | struct input_event e; |
34567704 JB |
2639 | int nread, i; |
2640 | extern int quit_char; | |
86a5659e JB |
2641 | |
2642 | if (read_socket_hook) | |
2643 | { | |
f4a7e5bd RS |
2644 | struct input_event buf[256]; |
2645 | ||
86a5659e JB |
2646 | read_alarm_should_throw = 0; |
2647 | if (! setjmp (read_alarm_throw)) | |
ce424b26 | 2648 | nread = (*read_socket_hook) (0, buf, 256, 1); |
86a5659e JB |
2649 | else |
2650 | nread = -1; | |
f4a7e5bd RS |
2651 | |
2652 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2653 | for (i = 0; i < nread; i++) | |
2654 | { | |
2655 | kbd_buffer_store_event (&buf[i]); | |
2656 | /* Don't look at input that follows a C-g too closely. | |
2657 | This reduces lossage due to autorepeat on C-g. */ | |
e43bd4f5 | 2658 | if (buf[i].kind == ASCII_KEYSTROKE_EVENT |
30bef8ec | 2659 | && buf[i].code == quit_char) |
f4a7e5bd RS |
2660 | break; |
2661 | } | |
86a5659e JB |
2662 | } |
2663 | else | |
86a5659e | 2664 | { |
f4a7e5bd RS |
2665 | char buf[3]; |
2666 | nread = read (fileno (stdin), buf, 1); | |
2667 | ||
2668 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
e43bd4f5 | 2669 | e.kind = ASCII_KEYSTROKE_EVENT; |
2d064114 | 2670 | e.frame_or_window = selected_frame; |
f4a7e5bd RS |
2671 | e.modifiers = 0; |
2672 | for (i = 0; i < nread; i++) | |
a00d5589 | 2673 | { |
f4a7e5bd RS |
2674 | /* Convert chars > 0177 to meta events if desired. |
2675 | We do this under the same conditions that read_avail_input does. */ | |
2676 | if (read_socket_hook == 0) | |
2677 | { | |
2678 | /* If the user says she has a meta key, then believe her. */ | |
2679 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2680 | e.modifiers = meta_modifier; | |
2681 | if (meta_key != 2) | |
2682 | buf[i] &= ~0x80; | |
2683 | } | |
b95520f5 | 2684 | |
c81d47b4 | 2685 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2686 | kbd_buffer_store_event (&e); |
2687 | /* Don't look at input that follows a C-g too closely. | |
2688 | This reduces lossage due to autorepeat on C-g. */ | |
2689 | if (buf[i] == quit_char) | |
2690 | break; | |
2691 | } | |
86a5659e JB |
2692 | } |
2693 | } | |
2694 | ||
2695 | #endif /* not HAVE_SELECT */ | |
2696 | #endif /* not VMS */ | |
7964ba9e | 2697 | #endif /* not MSDOS */ |
86a5659e JB |
2698 | \f |
2699 | #ifdef BSD4_1 | |
08633194 | 2700 | void |
23dab951 RS |
2701 | init_sigio (fd) |
2702 | int fd; | |
86a5659e JB |
2703 | { |
2704 | if (noninteractive) | |
2705 | return; | |
2706 | lmode = LINTRUP | lmode; | |
23dab951 | 2707 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2708 | } |
2709 | ||
dfcf069d | 2710 | void |
86a5659e JB |
2711 | reset_sigio () |
2712 | { | |
2713 | if (noninteractive) | |
2714 | return; | |
2715 | lmode = ~LINTRUP & lmode; | |
2716 | ioctl (0, TIOCLSET, &lmode); | |
2717 | } | |
2718 | ||
08633194 | 2719 | void |
86a5659e JB |
2720 | request_sigio () |
2721 | { | |
2722 | sigrelse (SIGTINT); | |
2723 | ||
2724 | interrupts_deferred = 0; | |
2725 | } | |
2726 | ||
08633194 | 2727 | void |
86a5659e JB |
2728 | unrequest_sigio () |
2729 | { | |
2730 | sighold (SIGTINT); | |
2731 | ||
2732 | interrupts_deferred = 1; | |
2733 | } | |
2734 | ||
2735 | /* still inside #ifdef BSD4_1 */ | |
2736 | #ifdef subprocesses | |
2737 | ||
2738 | int sigheld; /* Mask of held signals */ | |
2739 | ||
dfcf069d | 2740 | void |
86a5659e JB |
2741 | sigholdx (signum) |
2742 | int signum; | |
2743 | { | |
2744 | sigheld |= sigbit (signum); | |
2745 | sighold (signum); | |
2746 | } | |
2747 | ||
dfcf069d | 2748 | void |
86a5659e JB |
2749 | sigisheld (signum) |
2750 | int signum; | |
2751 | { | |
2752 | sigheld |= sigbit (signum); | |
2753 | } | |
2754 | ||
dfcf069d | 2755 | void |
86a5659e JB |
2756 | sigunhold (signum) |
2757 | int signum; | |
2758 | { | |
2759 | sigheld &= ~sigbit (signum); | |
2760 | sigrelse (signum); | |
2761 | } | |
2762 | ||
dfcf069d | 2763 | void |
86a5659e JB |
2764 | sigfree () /* Free all held signals */ |
2765 | { | |
2766 | int i; | |
2767 | for (i = 0; i < NSIG; i++) | |
2768 | if (sigheld & sigbit (i)) | |
2769 | sigrelse (i); | |
2770 | sigheld = 0; | |
2771 | } | |
2772 | ||
dfcf069d | 2773 | int |
86a5659e JB |
2774 | sigbit (i) |
2775 | { | |
2776 | return 1 << (i - 1); | |
2777 | } | |
2778 | #endif /* subprocesses */ | |
2779 | #endif /* BSD4_1 */ | |
2780 | \f | |
2781 | /* POSIX signals support - DJB */ | |
2782 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2783 | ||
2784 | #ifdef POSIX_SIGNALS | |
2785 | ||
c639b0e3 | 2786 | sigset_t empty_mask, full_mask; |
86a5659e | 2787 | |
86a5659e JB |
2788 | signal_handler_t |
2789 | sys_signal (int signal_number, signal_handler_t action) | |
2790 | { | |
c639b0e3 | 2791 | struct sigaction new_action, old_action; |
86a5659e | 2792 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2793 | new_action.sa_handler = action; |
55fafcf0 | 2794 | #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) |
25ab68af | 2795 | /* Emacs mostly works better with restartable system services. If this |
55fafcf0 RS |
2796 | flag exists, we probably want to turn it on here. |
2797 | However, on some systems this resets the timeout of `select' | |
2798 | which means that `select' never finishes if it keeps getting signals. | |
2799 | BROKEN_SA_RESTART is defined on those systems. */ | |
25ab68af RS |
2800 | new_action.sa_flags = SA_RESTART; |
2801 | #else | |
4a785b6e | 2802 | new_action.sa_flags = 0; |
25ab68af | 2803 | #endif |
d32b2f3c | 2804 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2805 | return (old_action.sa_handler); |
86a5659e JB |
2806 | } |
2807 | ||
e065a56e JB |
2808 | #ifndef __GNUC__ |
2809 | /* If we're compiling with GCC, we don't need this function, since it | |
2810 | can be written as a macro. */ | |
2811 | sigset_t | |
2812 | sys_sigmask (int sig) | |
2813 | { | |
2814 | sigset_t mask; | |
2815 | sigemptyset (&mask); | |
2816 | sigaddset (&mask, sig); | |
2817 | return mask; | |
2818 | } | |
2819 | #endif | |
2820 | ||
86a5659e JB |
2821 | /* I'd like to have these guys return pointers to the mask storage in here, |
2822 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2823 | safe and pass the structure. It normally won't be more than 2 bytes | |
2824 | anyhow. - DJB */ | |
2825 | ||
2826 | sigset_t | |
2827 | sys_sigblock (sigset_t new_mask) | |
2828 | { | |
2829 | sigset_t old_mask; | |
2830 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2831 | return (old_mask); | |
2832 | } | |
2833 | ||
2834 | sigset_t | |
2835 | sys_sigunblock (sigset_t new_mask) | |
2836 | { | |
2837 | sigset_t old_mask; | |
2838 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2839 | return (old_mask); | |
2840 | } | |
2841 | ||
2842 | sigset_t | |
2843 | sys_sigsetmask (sigset_t new_mask) | |
2844 | { | |
2845 | sigset_t old_mask; | |
2846 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2847 | return (old_mask); | |
2848 | } | |
2849 | ||
2850 | #endif /* POSIX_SIGNALS */ | |
2851 | \f | |
ca9c0567 PE |
2852 | #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED |
2853 | static char *my_sys_siglist[NSIG]; | |
2854 | # ifdef sys_siglist | |
2855 | # undef sys_siglist | |
2856 | # endif | |
2857 | # define sys_siglist my_sys_siglist | |
2858 | #endif | |
2859 | ||
2860 | void | |
2861 | init_signals () | |
2862 | { | |
2863 | #ifdef POSIX_SIGNALS | |
2864 | sigemptyset (&empty_mask); | |
2865 | sigfillset (&full_mask); | |
2866 | #endif | |
2867 | ||
2868 | #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED | |
2869 | if (! initialized) | |
2870 | { | |
2871 | # ifdef SIGABRT | |
2872 | sys_siglist[SIGABRT] = "Aborted"; | |
2873 | # endif | |
2874 | # ifdef SIGAIO | |
2875 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
2876 | # endif | |
2877 | # ifdef SIGALRM | |
2878 | sys_siglist[SIGALRM] = "Alarm clock"; | |
2879 | # endif | |
2880 | # ifdef SIGBUS | |
2881 | sys_siglist[SIGBUS] = "Bus error"; | |
2882 | # endif | |
2883 | # ifdef SIGCLD | |
2884 | sys_siglist[SIGCLD] = "Child status changed"; | |
2885 | # endif | |
2886 | # ifdef SIGCHLD | |
2887 | sys_siglist[SIGCHLD] = "Child status changed"; | |
2888 | # endif | |
2889 | # ifdef SIGCONT | |
2890 | sys_siglist[SIGCONT] = "Continued"; | |
2891 | # endif | |
2892 | # ifdef SIGDANGER | |
2893 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
2894 | # endif | |
2895 | # ifdef SIGDGNOTIFY | |
2896 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
2897 | # endif | |
2898 | # ifdef SIGEMT | |
2899 | sys_siglist[SIGEMT] = "Emulation trap"; | |
2900 | # endif | |
2901 | # ifdef SIGFPE | |
2902 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
2903 | # endif | |
2904 | # ifdef SIGFREEZE | |
2905 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
2906 | # endif | |
2907 | # ifdef SIGGRANT | |
2908 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
2909 | # endif | |
2910 | # ifdef SIGHUP | |
2911 | sys_siglist[SIGHUP] = "Hangup"; | |
2912 | # endif | |
2913 | # ifdef SIGILL | |
2914 | sys_siglist[SIGILL] = "Illegal instruction"; | |
2915 | # endif | |
2916 | # ifdef SIGINT | |
2917 | sys_siglist[SIGINT] = "Interrupt"; | |
2918 | # endif | |
2919 | # ifdef SIGIO | |
2920 | sys_siglist[SIGIO] = "I/O possible"; | |
2921 | # endif | |
2922 | # ifdef SIGIOINT | |
2923 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
2924 | # endif | |
2925 | # ifdef SIGIOT | |
2926 | sys_siglist[SIGIOT] = "IOT trap"; | |
2927 | # endif | |
2928 | # ifdef SIGKILL | |
2929 | sys_siglist[SIGKILL] = "Killed"; | |
2930 | # endif | |
2931 | # ifdef SIGLOST | |
2932 | sys_siglist[SIGLOST] = "Resource lost"; | |
2933 | # endif | |
2934 | # ifdef SIGLWP | |
2935 | sys_siglist[SIGLWP] = "SIGLWP"; | |
2936 | # endif | |
2937 | # ifdef SIGMSG | |
2938 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
2939 | # endif | |
2940 | # ifdef SIGPHONE | |
2941 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
2942 | # endif | |
2943 | # ifdef SIGPIPE | |
2944 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
2945 | # endif | |
2946 | # ifdef SIGPOLL | |
2947 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
2948 | # endif | |
2949 | # ifdef SIGPROF | |
2950 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
2951 | # endif | |
2952 | # ifdef SIGPTY | |
2953 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
2954 | # endif | |
2955 | # ifdef SIGPWR | |
2956 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
2957 | # endif | |
2958 | # ifdef SIGQUIT | |
2959 | sys_siglist[SIGQUIT] = "Quit"; | |
2960 | # endif | |
2961 | # ifdef SIGRETRACT | |
2962 | sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; | |
2963 | # endif | |
2964 | # ifdef SIGSAK | |
2965 | sys_siglist[SIGSAK] = "Secure attention"; | |
2966 | # endif | |
2967 | # ifdef SIGSEGV | |
2968 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
2969 | # endif | |
2970 | # ifdef SIGSOUND | |
2971 | sys_siglist[SIGSOUND] = "Sound completed"; | |
2972 | # endif | |
2973 | # ifdef SIGSTOP | |
2974 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
2975 | # endif | |
2976 | # ifdef SIGSTP | |
2977 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
2978 | # endif | |
2979 | # ifdef SIGSYS | |
2980 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
2981 | # endif | |
2982 | # ifdef SIGTERM | |
2983 | sys_siglist[SIGTERM] = "Terminated"; | |
2984 | # endif | |
2985 | # ifdef SIGTHAW | |
2986 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
2987 | # endif | |
2988 | # ifdef SIGTRAP | |
2989 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
2990 | # endif | |
2991 | # ifdef SIGTSTP | |
2992 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
2993 | # endif | |
2994 | # ifdef SIGTTIN | |
2995 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
2996 | # endif | |
2997 | # ifdef SIGTTOU | |
2998 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
2999 | # endif | |
3000 | # ifdef SIGURG | |
3001 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
3002 | # endif | |
3003 | # ifdef SIGUSR1 | |
3004 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
3005 | # endif | |
3006 | # ifdef SIGUSR2 | |
3007 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
3008 | # endif | |
3009 | # ifdef SIGVTALRM | |
3010 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
3011 | # endif | |
3012 | # ifdef SIGWAITING | |
3013 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
3014 | # endif | |
3015 | # ifdef SIGWINCH | |
3016 | sys_siglist[SIGWINCH] = "Window size changed"; | |
3017 | # endif | |
3018 | # ifdef SIGWIND | |
3019 | sys_siglist[SIGWIND] = "SIGWIND"; | |
3020 | # endif | |
3021 | # ifdef SIGXCPU | |
3022 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
3023 | # endif | |
3024 | # ifdef SIGXFSZ | |
3025 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
3026 | # endif | |
3027 | } | |
3028 | #endif /* !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED */ | |
3029 | } | |
3030 | \f | |
9927a7b1 | 3031 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
3032 | #ifdef random |
3033 | #define HAVE_RANDOM | |
3034 | #endif | |
3035 | #endif | |
3036 | ||
3037 | /* Figure out how many bits the system's random number generator uses. | |
3038 | `random' and `lrand48' are assumed to return 31 usable bits. | |
3039 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
3040 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
3041 | ||
3042 | #ifndef RAND_BITS | |
3043 | # ifdef HAVE_RANDOM | |
3044 | # define RAND_BITS 31 | |
3045 | # else /* !HAVE_RANDOM */ | |
3046 | # ifdef HAVE_LRAND48 | |
3047 | # define RAND_BITS 31 | |
3048 | # define random lrand48 | |
3049 | # else /* !HAVE_LRAND48 */ | |
3050 | # define RAND_BITS 15 | |
3051 | # if RAND_MAX == 32767 | |
3052 | # define random rand | |
3053 | # else /* RAND_MAX != 32767 */ | |
3054 | # if RAND_MAX == 2147483647 | |
3055 | # define random() (rand () >> 16) | |
3056 | # else /* RAND_MAX != 2147483647 */ | |
3057 | # ifdef USG | |
3058 | # define random rand | |
3059 | # else | |
3060 | # define random() (rand () >> 16) | |
2a633456 | 3061 | # endif /* !USG */ |
4bb8c8b7 KH |
3062 | # endif /* RAND_MAX != 2147483647 */ |
3063 | # endif /* RAND_MAX != 32767 */ | |
3064 | # endif /* !HAVE_LRAND48 */ | |
3065 | # endif /* !HAVE_RANDOM */ | |
3066 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 3067 | |
4bb8c8b7 KH |
3068 | void |
3069 | seed_random (arg) | |
3070 | long arg; | |
86a5659e | 3071 | { |
4bb8c8b7 KH |
3072 | #ifdef HAVE_RANDOM |
3073 | srandom ((unsigned int)arg); | |
f8b53a82 | 3074 | #else |
4bb8c8b7 | 3075 | # ifdef HAVE_LRAND48 |
76425a49 | 3076 | srand48 (arg); |
4bb8c8b7 KH |
3077 | # else |
3078 | srand ((unsigned int)arg); | |
3079 | # endif | |
2e46c7c6 | 3080 | #endif |
86a5659e JB |
3081 | } |
3082 | ||
4bb8c8b7 KH |
3083 | /* |
3084 | * Build a full Emacs-sized word out of whatever we've got. | |
3085 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
3086 | */ | |
3087 | long | |
3088 | get_random () | |
3089 | { | |
3090 | long val = random (); | |
3091 | #if VALBITS > RAND_BITS | |
3092 | val = (val << RAND_BITS) ^ random (); | |
3093 | #if VALBITS > 2*RAND_BITS | |
3094 | val = (val << RAND_BITS) ^ random (); | |
3095 | #if VALBITS > 3*RAND_BITS | |
3096 | val = (val << RAND_BITS) ^ random (); | |
3097 | #if VALBITS > 4*RAND_BITS | |
3098 | val = (val << RAND_BITS) ^ random (); | |
3099 | #endif /* need at least 5 */ | |
3100 | #endif /* need at least 4 */ | |
3101 | #endif /* need at least 3 */ | |
3102 | #endif /* need at least 2 */ | |
3103 | return val & ((1L << VALBITS) - 1); | |
3104 | } | |
86a5659e JB |
3105 | \f |
3106 | #ifdef WRONG_NAME_INSQUE | |
3107 | ||
3108 | insque (q,p) | |
3109 | caddr_t q,p; | |
3110 | { | |
3111 | _insque (q,p); | |
3112 | } | |
3113 | ||
3114 | #endif | |
3115 | \f | |
3116 | #ifdef VMS | |
3117 | ||
3118 | #ifdef getenv | |
3119 | /* If any place else asks for the TERM variable, | |
3120 | allow it to be overridden with the EMACS_TERM variable | |
3121 | before attempting to translate the logical name TERM. As a last | |
3122 | resort, ask for VAX C's special idea of the TERM variable. */ | |
3123 | #undef getenv | |
3124 | char * | |
3125 | sys_getenv (name) | |
3126 | char *name; | |
3127 | { | |
3128 | register char *val; | |
3129 | static char buf[256]; | |
3130 | static struct dsc$descriptor_s equiv | |
3131 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
3132 | static struct dsc$descriptor_s d_name | |
3133 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
3134 | short eqlen; | |
3135 | ||
3136 | if (!strcmp (name, "TERM")) | |
3137 | { | |
3138 | val = (char *) getenv ("EMACS_TERM"); | |
3139 | if (val) | |
3140 | return val; | |
3141 | } | |
3142 | ||
3143 | d_name.dsc$w_length = strlen (name); | |
3144 | d_name.dsc$a_pointer = name; | |
986ffb24 | 3145 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
3146 | { |
3147 | char *str = (char *) xmalloc (eqlen + 1); | |
3148 | bcopy (buf, str, eqlen); | |
3149 | str[eqlen] = '\0'; | |
3150 | /* This is a storage leak, but a pain to fix. With luck, | |
3151 | no one will ever notice. */ | |
3152 | return str; | |
3153 | } | |
3154 | return (char *) getenv (name); | |
3155 | } | |
3156 | #endif /* getenv */ | |
3157 | ||
3158 | #ifdef abort | |
3159 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
3160 | to force a call on the debugger from within the image. */ | |
3161 | #undef abort | |
3162 | sys_abort () | |
3163 | { | |
3164 | reset_sys_modes (); | |
3165 | LIB$SIGNAL (SS$_DEBUG); | |
3166 | } | |
3167 | #endif /* abort */ | |
3168 | #endif /* VMS */ | |
3169 | \f | |
3170 | #ifdef VMS | |
3171 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 3172 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 3173 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
3174 | cannot be shared. The VMS linker incorrectly forces you to use a private |
3175 | version which is uninitialized... If not for this "feature", we | |
3176 | could use the C library definition of sys_nerr and sys_errlist. */ | |
3177 | int sys_nerr = 35; | |
3178 | char *sys_errlist[] = | |
3179 | { | |
3180 | "error 0", | |
3181 | "not owner", | |
3182 | "no such file or directory", | |
3183 | "no such process", | |
3184 | "interrupted system call", | |
3185 | "i/o error", | |
3186 | "no such device or address", | |
3187 | "argument list too long", | |
3188 | "exec format error", | |
3189 | "bad file number", | |
3190 | "no child process", | |
3191 | "no more processes", | |
3192 | "not enough memory", | |
3193 | "permission denied", | |
3194 | "bad address", | |
3195 | "block device required", | |
3196 | "mount devices busy", | |
3197 | "file exists", | |
3198 | "cross-device link", | |
3199 | "no such device", | |
3200 | "not a directory", | |
3201 | "is a directory", | |
3202 | "invalid argument", | |
3203 | "file table overflow", | |
3204 | "too many open files", | |
3205 | "not a typewriter", | |
3206 | "text file busy", | |
3207 | "file too big", | |
3208 | "no space left on device", | |
3209 | "illegal seek", | |
3210 | "read-only file system", | |
3211 | "too many links", | |
3212 | "broken pipe", | |
3213 | "math argument", | |
3214 | "result too large", | |
3215 | "I/O stream empty", | |
3216 | "vax/vms specific error code nontranslatable error" | |
3217 | }; | |
ea5a0917 | 3218 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
3219 | #endif /* LINK_CRTL_SHARE */ |
3220 | #endif /* VMS */ | |
7088d1ca RM |
3221 | |
3222 | #ifndef HAVE_STRERROR | |
fe03522b | 3223 | #ifndef WINDOWSNT |
7088d1ca RM |
3224 | char * |
3225 | strerror (errnum) | |
3226 | int errnum; | |
3227 | { | |
3228 | extern char *sys_errlist[]; | |
3229 | extern int sys_nerr; | |
3230 | ||
3231 | if (errnum >= 0 && errnum < sys_nerr) | |
3232 | return sys_errlist[errnum]; | |
3233 | return (char *) "Unknown error"; | |
3234 | } | |
fe03522b | 3235 | #endif /* not WINDOWSNT */ |
7088d1ca | 3236 | #endif /* ! HAVE_STRERROR */ |
86a5659e | 3237 | \f |
86a5659e | 3238 | int |
68c45bf0 | 3239 | emacs_open (path, oflag, mode) |
8c2ba7de | 3240 | const char *path; |
86a5659e JB |
3241 | int oflag, mode; |
3242 | { | |
3243 | register int rtnval; | |
68c45bf0 PE |
3244 | |
3245 | #ifdef BSD4_1 | |
3246 | if (oflag & O_CREAT) | |
3247 | return creat (path, mode); | |
3248 | #endif | |
86a5659e JB |
3249 | |
3250 | while ((rtnval = open (path, oflag, mode)) == -1 | |
3251 | && (errno == EINTR)); | |
3252 | return (rtnval); | |
3253 | } | |
3254 | ||
dfcf069d | 3255 | int |
68c45bf0 | 3256 | emacs_close (fd) |
86a5659e JB |
3257 | int fd; |
3258 | { | |
fe111daf | 3259 | int did_retry = 0; |
86a5659e JB |
3260 | register int rtnval; |
3261 | ||
3262 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3263 | && (errno == EINTR)) |
3264 | did_retry = 1; | |
3265 | ||
3266 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3267 | file descriptor. If it did the second close will fail with | |
3268 | errno = EBADF. That means we have succeeded. */ | |
3269 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3270 | return 0; | |
3271 | ||
86a5659e JB |
3272 | return rtnval; |
3273 | } | |
3274 | ||
86a5659e | 3275 | int |
68c45bf0 | 3276 | emacs_read (fildes, buf, nbyte) |
86a5659e JB |
3277 | int fildes; |
3278 | char *buf; | |
3279 | unsigned int nbyte; | |
3280 | { | |
3281 | register int rtnval; | |
3282 | ||
3283 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
3284 | && (errno == EINTR)); | |
3285 | return (rtnval); | |
3286 | } | |
3287 | ||
3288 | int | |
68c45bf0 | 3289 | emacs_write (fildes, buf, nbyte) |
86a5659e | 3290 | int fildes; |
7b1cc119 | 3291 | const char *buf; |
86a5659e JB |
3292 | unsigned int nbyte; |
3293 | { | |
b95520f5 | 3294 | register int rtnval, bytes_written; |
86a5659e | 3295 | |
b95520f5 BF |
3296 | bytes_written = 0; |
3297 | ||
3298 | while (nbyte > 0) | |
3299 | { | |
3300 | rtnval = write (fildes, buf, nbyte); | |
3301 | ||
3302 | if (rtnval == -1) | |
3303 | { | |
3304 | if (errno == EINTR) | |
3305 | continue; | |
3306 | else | |
aa670904 | 3307 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3308 | } |
3309 | ||
3310 | buf += rtnval; | |
3311 | nbyte -= rtnval; | |
3312 | bytes_written += rtnval; | |
3313 | } | |
3314 | return (bytes_written); | |
86a5659e | 3315 | } |
86a5659e JB |
3316 | \f |
3317 | #ifdef USG | |
3318 | /* | |
3319 | * All of the following are for USG. | |
3320 | * | |
3321 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3322 | * that the user program has elected to catch. Thus the system call | |
3323 | * must be retried in these cases. To handle this without massive | |
3324 | * changes in the source code, we remap the standard system call names | |
3325 | * to names for our own functions in sysdep.c that do the system call | |
3326 | * with retries. Actually, for portability reasons, it is good | |
3327 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3328 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3329 | * adds an extra level of function call overhead but it is almost |
3330 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3331 | */ | |
3332 | ||
86a5659e JB |
3333 | /* |
3334 | * Warning, this function may not duplicate 4.2 action properly | |
3335 | * under error conditions. | |
3336 | */ | |
3337 | ||
3338 | #ifndef MAXPATHLEN | |
3339 | /* In 4.1, param.h fails to define this. */ | |
3340 | #define MAXPATHLEN 1024 | |
3341 | #endif | |
3342 | ||
3343 | #ifndef HAVE_GETWD | |
3344 | ||
3345 | char * | |
3346 | getwd (pathname) | |
3347 | char *pathname; | |
3348 | { | |
3349 | char *npath, *spath; | |
3350 | extern char *getcwd (); | |
3351 | ||
9ac0d9e0 | 3352 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3353 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 3354 | if (spath == 0) |
18b6bc73 GM |
3355 | { |
3356 | UNBLOCK_INPUT; | |
3357 | return spath; | |
3358 | } | |
86a5659e JB |
3359 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3360 | up to first slash. Should be harmless on other systems. */ | |
3361 | while (*npath && *npath != '/') | |
3362 | npath++; | |
3363 | strcpy (pathname, npath); | |
3364 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3365 | UNBLOCK_INPUT; |
86a5659e JB |
3366 | return pathname; |
3367 | } | |
3368 | ||
3369 | #endif /* HAVE_GETWD */ | |
3370 | ||
3371 | /* | |
3372 | * Emulate rename using unlink/link. Note that this is | |
3373 | * only partially correct. Also, doesn't enforce restriction | |
3374 | * that files be of same type (regular->regular, dir->dir, etc). | |
3375 | */ | |
3376 | ||
4746118a JB |
3377 | #ifndef HAVE_RENAME |
3378 | ||
86a5659e | 3379 | rename (from, to) |
19c7afdf JB |
3380 | const char *from; |
3381 | const char *to; | |
86a5659e JB |
3382 | { |
3383 | if (access (from, 0) == 0) | |
3384 | { | |
3385 | unlink (to); | |
3386 | if (link (from, to) == 0) | |
3387 | if (unlink (from) == 0) | |
3388 | return (0); | |
3389 | } | |
3390 | return (-1); | |
3391 | } | |
3392 | ||
4746118a JB |
3393 | #endif |
3394 | ||
86a5659e JB |
3395 | |
3396 | #ifdef HPUX | |
3397 | #ifndef HAVE_PERROR | |
3398 | ||
3399 | /* HPUX curses library references perror, but as far as we know | |
3400 | it won't be called. Anyway this definition will do for now. */ | |
3401 | ||
3402 | perror () | |
3403 | { | |
3404 | } | |
3405 | ||
3406 | #endif /* not HAVE_PERROR */ | |
3407 | #endif /* HPUX */ | |
3408 | ||
3409 | #ifndef HAVE_DUP2 | |
3410 | ||
3411 | /* | |
3412 | * Emulate BSD dup2. First close newd if it already exists. | |
3413 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3414 | * until we are, then close the unsuccessful ones. | |
3415 | */ | |
3416 | ||
3417 | dup2 (oldd, newd) | |
3418 | int oldd; | |
3419 | int newd; | |
3420 | { | |
3421 | register int fd, ret; | |
3422 | ||
68c45bf0 | 3423 | emacs_close (newd); |
86a5659e JB |
3424 | |
3425 | #ifdef F_DUPFD | |
68c45bf0 | 3426 | return fcntl (oldd, F_DUPFD, newd); |
86a5659e JB |
3427 | #else |
3428 | fd = dup (old); | |
3429 | if (fd == -1) | |
3430 | return -1; | |
3431 | if (fd == new) | |
3432 | return new; | |
3433 | ret = dup2 (old,new); | |
68c45bf0 | 3434 | emacs_close (fd); |
86a5659e JB |
3435 | return ret; |
3436 | #endif | |
3437 | } | |
3438 | ||
3439 | #endif /* not HAVE_DUP2 */ | |
3440 | ||
3441 | /* | |
3442 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3443 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3444 | * Only needed when subprocesses are defined. | |
3445 | */ | |
3446 | ||
3447 | #ifdef subprocesses | |
3448 | #ifndef VMS | |
3449 | #ifndef HAVE_GETTIMEOFDAY | |
3450 | #ifdef HAVE_TIMEVAL | |
3451 | ||
3452 | /* ARGSUSED */ | |
dfcf069d | 3453 | int |
86a5659e JB |
3454 | gettimeofday (tp, tzp) |
3455 | struct timeval *tp; | |
3456 | struct timezone *tzp; | |
3457 | { | |
3458 | extern long time (); | |
3459 | ||
3460 | tp->tv_sec = time ((long *)0); | |
3461 | tp->tv_usec = 0; | |
4ca7594f RS |
3462 | if (tzp != 0) |
3463 | tzp->tz_minuteswest = -1; | |
dfcf069d | 3464 | return 0; |
86a5659e JB |
3465 | } |
3466 | ||
3467 | #endif | |
3468 | #endif | |
3469 | #endif | |
3470 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3471 | ||
3472 | /* | |
3473 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3474 | */ | |
3475 | ||
dfcf069d | 3476 | void |
86a5659e JB |
3477 | croak (badfunc) |
3478 | char *badfunc; | |
3479 | { | |
3480 | printf ("%s not yet implemented\r\n", badfunc); | |
3481 | reset_sys_modes (); | |
3482 | exit (1); | |
3483 | } | |
3484 | ||
3485 | #endif /* USG */ | |
3486 | \f | |
86a5659e JB |
3487 | /* Directory routines for systems that don't have them. */ |
3488 | ||
3489 | #ifdef SYSV_SYSTEM_DIR | |
3490 | ||
3491 | #include <dirent.h> | |
3492 | ||
c4ea52a6 | 3493 | #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR) |
cfdc57af | 3494 | |
86a5659e JB |
3495 | int |
3496 | closedir (dirp) | |
3497 | register DIR *dirp; /* stream from opendir */ | |
3498 | { | |
cfdc57af RS |
3499 | int rtnval; |
3500 | ||
68c45bf0 | 3501 | rtnval = emacs_close (dirp->dd_fd); |
1b929d25 | 3502 | |
65aa44ac JB |
3503 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3504 | in one block. Why in the world are we freeing this ourselves | |
3505 | anyway? */ | |
3506 | #if ! (defined (sun) && defined (USG5_4)) | |
3507 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3508 | #endif | |
9ac0d9e0 | 3509 | xfree ((char *) dirp); |
cfdc57af RS |
3510 | |
3511 | return rtnval; | |
86a5659e | 3512 | } |
1db6401c | 3513 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3514 | #endif /* SYSV_SYSTEM_DIR */ |
3515 | ||
3516 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3517 | ||
3518 | DIR * | |
3519 | opendir (filename) | |
3520 | char *filename; /* name of directory */ | |
3521 | { | |
3522 | register DIR *dirp; /* -> malloc'ed storage */ | |
3523 | register int fd; /* file descriptor for read */ | |
3524 | struct stat sbuf; /* result of fstat */ | |
3525 | ||
68c45bf0 | 3526 | fd = emacs_open (filename, O_RDONLY, 0); |
86a5659e JB |
3527 | if (fd < 0) |
3528 | return 0; | |
3529 | ||
9ac0d9e0 | 3530 | BLOCK_INPUT; |
86a5659e JB |
3531 | if (fstat (fd, &sbuf) < 0 |
3532 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
7f77dbe3 | 3533 | || (dirp = (DIR *) xmalloc (sizeof (DIR))) == 0) |
86a5659e | 3534 | { |
68c45bf0 | 3535 | emacs_close (fd); |
9ac0d9e0 | 3536 | UNBLOCK_INPUT; |
86a5659e JB |
3537 | return 0; /* bad luck today */ |
3538 | } | |
9ac0d9e0 | 3539 | UNBLOCK_INPUT; |
86a5659e JB |
3540 | |
3541 | dirp->dd_fd = fd; | |
3542 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3543 | ||
3544 | return dirp; | |
3545 | } | |
3546 | ||
3547 | void | |
3548 | closedir (dirp) | |
3549 | register DIR *dirp; /* stream from opendir */ | |
3550 | { | |
68c45bf0 | 3551 | emacs_close (dirp->dd_fd); |
9ac0d9e0 | 3552 | xfree ((char *) dirp); |
86a5659e JB |
3553 | } |
3554 | ||
3555 | ||
3556 | #ifndef VMS | |
3557 | #define DIRSIZ 14 | |
3558 | struct olddir | |
3559 | { | |
3560 | ino_t od_ino; /* inode */ | |
3561 | char od_name[DIRSIZ]; /* filename */ | |
3562 | }; | |
3563 | #endif /* not VMS */ | |
3564 | ||
3565 | struct direct dir_static; /* simulated directory contents */ | |
3566 | ||
3567 | /* ARGUSED */ | |
3568 | struct direct * | |
3569 | readdir (dirp) | |
3570 | register DIR *dirp; /* stream from opendir */ | |
3571 | { | |
3572 | #ifndef VMS | |
3573 | register struct olddir *dp; /* -> directory data */ | |
3574 | #else /* VMS */ | |
3575 | register struct dir$_name *dp; /* -> directory data */ | |
3576 | register struct dir$_version *dv; /* -> version data */ | |
3577 | #endif /* VMS */ | |
3578 | ||
3579 | for (; ;) | |
3580 | { | |
3581 | if (dirp->dd_loc >= dirp->dd_size) | |
3582 | dirp->dd_loc = dirp->dd_size = 0; | |
3583 | ||
3584 | if (dirp->dd_size == 0 /* refill buffer */ | |
68c45bf0 | 3585 | && (dirp->dd_size = emacs_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) |
86a5659e JB |
3586 | return 0; |
3587 | ||
3588 | #ifndef VMS | |
3589 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3590 | dirp->dd_loc += sizeof (struct olddir); | |
3591 | ||
3592 | if (dp->od_ino != 0) /* not deleted entry */ | |
3593 | { | |
3594 | dir_static.d_ino = dp->od_ino; | |
3595 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3596 | dir_static.d_name[DIRSIZ] = '\0'; | |
3597 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3598 | dir_static.d_reclen = sizeof (struct direct) | |
3599 | - MAXNAMLEN + 3 | |
3600 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3601 | return &dir_static; /* -> simulated structure */ | |
3602 | } | |
3603 | #else /* VMS */ | |
3604 | dp = (struct dir$_name *) dirp->dd_buf; | |
3605 | if (dirp->dd_loc == 0) | |
3606 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3607 | : dp->dir$b_namecount; | |
3608 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3609 | dir_static.d_ino = dv->dir$w_fid_num; | |
3610 | dir_static.d_namlen = dp->dir$b_namecount; | |
3611 | dir_static.d_reclen = sizeof (struct direct) | |
3612 | - MAXNAMLEN + 3 | |
3613 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3614 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3615 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3616 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3617 | return &dir_static; | |
3618 | #endif /* VMS */ | |
3619 | } | |
3620 | } | |
3621 | ||
3622 | #ifdef VMS | |
3623 | /* readdirver is just like readdir except it returns all versions of a file | |
3624 | as separate entries. */ | |
3625 | ||
3626 | /* ARGUSED */ | |
3627 | struct direct * | |
3628 | readdirver (dirp) | |
3629 | register DIR *dirp; /* stream from opendir */ | |
3630 | { | |
3631 | register struct dir$_name *dp; /* -> directory data */ | |
3632 | register struct dir$_version *dv; /* -> version data */ | |
3633 | ||
3634 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3635 | dirp->dd_loc = dirp->dd_size = 0; | |
3636 | ||
3637 | if (dirp->dd_size == 0 /* refill buffer */ | |
3638 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3639 | return 0; | |
3640 | ||
3641 | dp = (struct dir$_name *) dirp->dd_buf; | |
3642 | if (dirp->dd_loc == 0) | |
3643 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3644 | : dp->dir$b_namecount; | |
3645 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3646 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3647 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3648 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3649 | dir_static.d_ino = dv->dir$w_fid_num; | |
3650 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3651 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3652 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3653 | return &dir_static; | |
3654 | } | |
3655 | ||
3656 | #endif /* VMS */ | |
3657 | ||
3658 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3659 | |
3660 | \f | |
53ea491a | 3661 | int |
061ea326 | 3662 | set_file_times (filename, atime, mtime) |
8c2ba7de | 3663 | const char *filename; |
53ea491a KH |
3664 | EMACS_TIME atime, mtime; |
3665 | { | |
3666 | #ifdef HAVE_UTIMES | |
3667 | struct timeval tv[2]; | |
3668 | tv[0] = atime; | |
3669 | tv[1] = mtime; | |
8334eb21 RS |
3670 | return utimes (filename, tv); |
3671 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3672 | struct utimbuf utb; |
3673 | utb.actime = EMACS_SECS (atime); | |
3674 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3675 | return utime (filename, &utb); |
3676 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3677 | } |
3678 | \f | |
23524fb9 JB |
3679 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3680 | ||
3681 | #ifndef HAVE_MKDIR | |
3682 | /* | |
3683 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3684 | * | |
3685 | * If you want it, it's yours. All I ask in return is that if you | |
3686 | * figure out how to do this in a Bourne Shell script you send me | |
3687 | * a copy. | |
3688 | * sdcsvax!rmr or rmr@uscd | |
3689 | * | |
3690 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3691 | * subroutine. 11Mar86; hoptoad!gnu | |
3692 | * | |
3693 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3694 | * subroutine didn't return EEXIST. It does now. | |
3695 | */ | |
3696 | ||
3697 | /* | |
3698 | * Make a directory. | |
3699 | */ | |
f3892946 RS |
3700 | #ifdef MKDIR_PROTOTYPE |
3701 | MKDIR_PROTOTYPE | |
3702 | #else | |
23524fb9 JB |
3703 | int |
3704 | mkdir (dpath, dmode) | |
3705 | char *dpath; | |
3706 | int dmode; | |
f3892946 | 3707 | #endif |
23524fb9 | 3708 | { |
039f26a4 | 3709 | int cpid, status, fd; |
23524fb9 JB |
3710 | struct stat statbuf; |
3711 | ||
3712 | if (stat (dpath, &statbuf) == 0) | |
3713 | { | |
3714 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3715 | return -1; | |
3716 | } | |
3717 | ||
3718 | /* If stat fails for a reason other than non-existence, return error */ | |
3719 | if (errno != ENOENT) | |
3720 | return -1; | |
3721 | ||
039f26a4 | 3722 | synch_process_alive = 1; |
23524fb9 JB |
3723 | switch (cpid = fork ()) |
3724 | { | |
3725 | ||
039f26a4 | 3726 | case -1: /* Error in fork */ |
23524fb9 JB |
3727 | return (-1); /* Errno is set already */ |
3728 | ||
3729 | case 0: /* Child process */ | |
3730 | /* | |
3731 | * Cheap hack to set mode of new directory. Since this | |
3732 | * child process is going away anyway, we zap its umask. | |
3733 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3734 | * directory. Does anybody care? | |
3735 | */ | |
3736 | status = umask (0); /* Get current umask */ | |
3737 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
68c45bf0 | 3738 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3739 | if (fd >= 0) |
3740 | { | |
3741 | dup2 (fd, 0); | |
3742 | dup2 (fd, 1); | |
3743 | dup2 (fd, 2); | |
3744 | } | |
23524fb9 JB |
3745 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3746 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3747 | ||
3748 | default: /* Parent process */ | |
039f26a4 | 3749 | wait_for_termination (cpid); |
23524fb9 JB |
3750 | } |
3751 | ||
039f26a4 | 3752 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3753 | { |
3754 | errno = EIO; /* We don't know why, but */ | |
3755 | return -1; /* /bin/mkdir failed */ | |
3756 | } | |
3757 | ||
3758 | return 0; | |
3759 | } | |
3760 | #endif /* not HAVE_MKDIR */ | |
3761 | ||
3762 | #ifndef HAVE_RMDIR | |
3763 | int | |
3764 | rmdir (dpath) | |
3765 | char *dpath; | |
3766 | { | |
039f26a4 | 3767 | int cpid, status, fd; |
23524fb9 JB |
3768 | struct stat statbuf; |
3769 | ||
3770 | if (stat (dpath, &statbuf) != 0) | |
3771 | { | |
3772 | /* Stat just set errno. We don't have to */ | |
3773 | return -1; | |
3774 | } | |
3775 | ||
039f26a4 | 3776 | synch_process_alive = 1; |
23524fb9 JB |
3777 | switch (cpid = fork ()) |
3778 | { | |
3779 | ||
039f26a4 | 3780 | case -1: /* Error in fork */ |
23524fb9 JB |
3781 | return (-1); /* Errno is set already */ |
3782 | ||
3783 | case 0: /* Child process */ | |
68c45bf0 | 3784 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3785 | if (fd >= 0) |
3786 | { | |
3787 | dup2 (fd, 0); | |
3788 | dup2 (fd, 1); | |
3789 | dup2 (fd, 2); | |
3790 | } | |
f560db78 RS |
3791 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3792 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3793 | ||
207bdbdb | 3794 | default: /* Parent process */ |
f560db78 | 3795 | wait_for_termination (cpid); |
23524fb9 JB |
3796 | } |
3797 | ||
f560db78 | 3798 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3799 | { |
3800 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3801 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3802 | } |
3803 | ||
3804 | return 0; | |
3805 | } | |
3806 | #endif /* !HAVE_RMDIR */ | |
3807 | ||
3808 | ||
86a5659e JB |
3809 | \f |
3810 | /* Functions for VMS */ | |
3811 | #ifdef VMS | |
91bac16a | 3812 | #include "vms-pwd.h" |
86a5659e JB |
3813 | #include <acldef.h> |
3814 | #include <chpdef.h> | |
3815 | #include <jpidef.h> | |
3816 | ||
3817 | /* Return as a string the VMS error string pertaining to STATUS. | |
3818 | Reuses the same static buffer each time it is called. */ | |
3819 | ||
3820 | char * | |
3821 | vmserrstr (status) | |
3822 | int status; /* VMS status code */ | |
3823 | { | |
3824 | int bufadr[2]; | |
3825 | short len; | |
3826 | static char buf[257]; | |
3827 | ||
3828 | bufadr[0] = sizeof buf - 1; | |
3829 | bufadr[1] = (int) buf; | |
3830 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3831 | return "untranslatable VMS error status"; | |
3832 | buf[len] = '\0'; | |
3833 | return buf; | |
3834 | } | |
3835 | ||
3836 | #ifdef access | |
3837 | #undef access | |
3838 | ||
3839 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3840 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3841 | */ | |
3842 | ||
3843 | #ifdef VMS4_4 | |
3844 | ||
3845 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3846 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3847 | ||
3848 | typedef union { | |
3849 | struct { | |
3850 | unsigned short s_buflen; | |
3851 | unsigned short s_code; | |
3852 | char *s_bufadr; | |
3853 | unsigned short *s_retlenadr; | |
3854 | } s; | |
3855 | int end; | |
3856 | } item; | |
3857 | #define buflen s.s_buflen | |
3858 | #define code s.s_code | |
3859 | #define bufadr s.s_bufadr | |
3860 | #define retlenadr s.s_retlenadr | |
3861 | ||
3862 | #define R_OK 4 /* test for read permission */ | |
3863 | #define W_OK 2 /* test for write permission */ | |
3864 | #define X_OK 1 /* test for execute (search) permission */ | |
3865 | #define F_OK 0 /* test for presence of file */ | |
3866 | ||
3867 | int | |
3868 | sys_access (path, mode) | |
3869 | char *path; | |
3870 | int mode; | |
3871 | { | |
3872 | static char *user = NULL; | |
3873 | char dir_fn[512]; | |
3874 | ||
3875 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3876 | * access can treat the directory like a file. */ | |
3877 | if (directory_file_name (path, dir_fn)) | |
3878 | path = dir_fn; | |
3879 | ||
3880 | if (mode == F_OK) | |
3881 | return access (path, mode); | |
3882 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3883 | return -1; | |
3884 | { | |
3885 | int stat; | |
3886 | int flags; | |
3887 | int acces; | |
3888 | unsigned short int dummy; | |
3889 | item itemlst[3]; | |
3890 | static int constant = ACL$C_FILE; | |
3891 | DESCRIPTOR (path_desc, path); | |
3892 | DESCRIPTOR (user_desc, user); | |
3893 | ||
3894 | flags = 0; | |
3895 | acces = 0; | |
3896 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3897 | return stat; | |
3898 | if (mode & R_OK) | |
3899 | acces |= CHP$M_READ; | |
3900 | if (mode & W_OK) | |
3901 | acces |= CHP$M_WRITE; | |
3902 | itemlst[0].buflen = sizeof (int); | |
3903 | itemlst[0].code = CHP$_FLAGS; | |
3904 | itemlst[0].bufadr = (char *) &flags; | |
3905 | itemlst[0].retlenadr = &dummy; | |
3906 | itemlst[1].buflen = sizeof (int); | |
3907 | itemlst[1].code = CHP$_ACCESS; | |
3908 | itemlst[1].bufadr = (char *) &acces; | |
3909 | itemlst[1].retlenadr = &dummy; | |
3910 | itemlst[2].end = CHP$_END; | |
3911 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3912 | return stat == SS$_NORMAL ? 0 : -1; | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | #else /* not VMS4_4 */ | |
3917 | ||
3918 | #include <prvdef.h> | |
fe03522b RS |
3919 | #define ACE$M_WRITE 2 |
3920 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3921 | |
3922 | static unsigned short memid, grpid; | |
3923 | static unsigned int uic; | |
3924 | ||
3925 | /* Called from init_sys_modes, so it happens not very often | |
3926 | but at least each time Emacs is loaded. */ | |
dfcf069d | 3927 | void |
86a5659e JB |
3928 | sys_access_reinit () |
3929 | { | |
3930 | uic = 0; | |
3931 | } | |
3932 | ||
3933 | int | |
3934 | sys_access (filename, type) | |
3935 | char * filename; | |
3936 | int type; | |
3937 | { | |
3938 | struct FAB fab; | |
3939 | struct XABPRO xab; | |
3940 | int status, size, i, typecode, acl_controlled; | |
3941 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3942 | union prvdef prvmask; | |
3943 | ||
3944 | /* Get UIC and GRP values for protection checking. */ | |
3945 | if (uic == 0) | |
3946 | { | |
3947 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3948 | if (! (status & 1)) | |
3949 | return -1; | |
3950 | memid = uic & 0xFFFF; | |
3951 | grpid = uic >> 16; | |
3952 | } | |
3953 | ||
fe03522b | 3954 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3955 | return access (filename, type); |
3956 | ||
3957 | /* Check write protection. */ | |
3958 | ||
fe03522b | 3959 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 3960 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
3961 | |
3962 | /* Find privilege bits */ | |
986ffb24 | 3963 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3964 | if (! (status & 1)) |
3965 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3966 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3967 | return 0; /* BYPASS enabled */ | |
3968 | fab = cc$rms_fab; | |
3969 | fab.fab$b_fac = FAB$M_GET; | |
3970 | fab.fab$l_fna = filename; | |
3971 | fab.fab$b_fns = strlen (filename); | |
3972 | fab.fab$l_xab = &xab; | |
3973 | xab = cc$rms_xabpro; | |
3974 | xab.xab$l_aclbuf = aclbuf; | |
3975 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3976 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3977 | if (! (status & 1)) |
3978 | return -1; | |
986ffb24 | 3979 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 3980 | /* Check system access */ |
ea5a0917 | 3981 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
3982 | return 0; |
3983 | /* Check ACL entries, if any */ | |
3984 | acl_controlled = 0; | |
3985 | if (xab.xab$w_acllen > 0) | |
3986 | { | |
3987 | aclptr = aclbuf; | |
3988 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3989 | while (*aclptr && aclptr < aclend) | |
3990 | { | |
3991 | size = (*aclptr & 0xff) / 4; | |
3992 | typecode = (*aclptr >> 8) & 0xff; | |
3993 | if (typecode == ACE$C_KEYID) | |
3994 | for (i = size - 1; i > 1; i--) | |
3995 | if (aclptr[i] == uic) | |
3996 | { | |
3997 | acl_controlled = 1; | |
3998 | if (aclptr[1] & ACE$M_WRITE) | |
3999 | return 0; /* Write access through ACL */ | |
4000 | } | |
4001 | aclptr = &aclptr[size]; | |
4002 | } | |
4003 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
4004 | return -1; | |
4005 | } | |
4006 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 4007 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 4008 | return 0; |
ea5a0917 | 4009 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 4010 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
4011 | return 0; /* Group writable */ |
4012 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 4013 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 4014 | return 0; /* Owner writable */ |
86a5659e | 4015 | |
ea5a0917 | 4016 | return -1; /* Not writable */ |
86a5659e JB |
4017 | } |
4018 | #endif /* not VMS4_4 */ | |
4019 | #endif /* access */ | |
4020 | ||
4021 | static char vtbuf[NAM$C_MAXRSS+1]; | |
4022 | ||
4023 | /* translate a vms file spec to a unix path */ | |
4024 | char * | |
4025 | sys_translate_vms (vfile) | |
4026 | char * vfile; | |
4027 | { | |
4028 | char * p; | |
4029 | char * targ; | |
4030 | ||
4031 | if (!vfile) | |
4032 | return 0; | |
4033 | ||
4034 | targ = vtbuf; | |
4035 | ||
4036 | /* leading device or logical name is a root directory */ | |
4037 | if (p = strchr (vfile, ':')) | |
4038 | { | |
4039 | *targ++ = '/'; | |
4040 | while (vfile < p) | |
4041 | *targ++ = *vfile++; | |
4042 | vfile++; | |
4043 | *targ++ = '/'; | |
4044 | } | |
4045 | p = vfile; | |
4046 | if (*p == '[' || *p == '<') | |
4047 | { | |
4048 | while (*++vfile != *p + 2) | |
4049 | switch (*vfile) | |
4050 | { | |
4051 | case '.': | |
4052 | if (vfile[-1] == *p) | |
4053 | *targ++ = '.'; | |
4054 | *targ++ = '/'; | |
4055 | break; | |
4056 | ||
4057 | case '-': | |
4058 | *targ++ = '.'; | |
4059 | *targ++ = '.'; | |
4060 | break; | |
4061 | ||
4062 | default: | |
4063 | *targ++ = *vfile; | |
4064 | break; | |
4065 | } | |
4066 | vfile++; | |
4067 | *targ++ = '/'; | |
4068 | } | |
4069 | while (*vfile) | |
4070 | *targ++ = *vfile++; | |
4071 | ||
4072 | return vtbuf; | |
4073 | } | |
4074 | ||
4075 | static char utbuf[NAM$C_MAXRSS+1]; | |
4076 | ||
4077 | /* translate a unix path to a VMS file spec */ | |
4078 | char * | |
4079 | sys_translate_unix (ufile) | |
4080 | char * ufile; | |
4081 | { | |
4082 | int slash_seen = 0; | |
4083 | char *p; | |
4084 | char * targ; | |
4085 | ||
4086 | if (!ufile) | |
4087 | return 0; | |
4088 | ||
4089 | targ = utbuf; | |
4090 | ||
4091 | if (*ufile == '/') | |
4092 | { | |
4093 | ufile++; | |
4094 | } | |
4095 | ||
4096 | while (*ufile) | |
4097 | { | |
4098 | switch (*ufile) | |
4099 | { | |
4100 | case '/': | |
4101 | if (slash_seen) | |
4102 | if (index (&ufile[1], '/')) | |
4103 | *targ++ = '.'; | |
4104 | else | |
4105 | *targ++ = ']'; | |
4106 | else | |
4107 | { | |
4108 | *targ++ = ':'; | |
4109 | if (index (&ufile[1], '/')) | |
4110 | *targ++ = '['; | |
4111 | slash_seen = 1; | |
4112 | } | |
4113 | break; | |
4114 | ||
4115 | case '.': | |
4116 | if (strncmp (ufile, "./", 2) == 0) | |
4117 | { | |
4118 | if (!slash_seen) | |
4119 | { | |
4120 | *targ++ = '['; | |
4121 | slash_seen = 1; | |
4122 | } | |
4123 | ufile++; /* skip the dot */ | |
4124 | if (index (&ufile[1], '/')) | |
4125 | *targ++ = '.'; | |
4126 | else | |
4127 | *targ++ = ']'; | |
4128 | } | |
4129 | else if (strncmp (ufile, "../", 3) == 0) | |
4130 | { | |
4131 | if (!slash_seen) | |
4132 | { | |
4133 | *targ++ = '['; | |
4134 | slash_seen = 1; | |
4135 | } | |
4136 | *targ++ = '-'; | |
4137 | ufile += 2; /* skip the dots */ | |
4138 | if (index (&ufile[1], '/')) | |
4139 | *targ++ = '.'; | |
4140 | else | |
4141 | *targ++ = ']'; | |
4142 | } | |
4143 | else | |
4144 | *targ++ = *ufile; | |
4145 | break; | |
4146 | ||
4147 | default: | |
4148 | *targ++ = *ufile; | |
4149 | break; | |
4150 | } | |
4151 | ufile++; | |
4152 | } | |
4153 | *targ = '\0'; | |
4154 | ||
4155 | return utbuf; | |
4156 | } | |
4157 | ||
4158 | char * | |
4159 | getwd (pathname) | |
4160 | char *pathname; | |
4161 | { | |
f4a7e5bd | 4162 | char *ptr, *val; |
210b2b4f | 4163 | extern char *getcwd (); |
86a5659e | 4164 | |
210b2b4f JB |
4165 | #define MAXPATHLEN 1024 |
4166 | ||
9ac0d9e0 | 4167 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4168 | val = getcwd (ptr, MAXPATHLEN); |
4169 | if (val == 0) | |
4170 | { | |
4171 | xfree (ptr); | |
4172 | return val; | |
4173 | } | |
210b2b4f | 4174 | strcpy (pathname, ptr); |
9ac0d9e0 | 4175 | xfree (ptr); |
210b2b4f JB |
4176 | |
4177 | return pathname; | |
86a5659e JB |
4178 | } |
4179 | ||
dfcf069d | 4180 | int |
86a5659e JB |
4181 | getppid () |
4182 | { | |
4183 | long item_code = JPI$_OWNER; | |
4184 | unsigned long parent_id; | |
4185 | int status; | |
4186 | ||
4187 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4188 | { | |
4189 | errno = EVMSERR; | |
4190 | vaxc$errno = status; | |
4191 | return -1; | |
4192 | } | |
4193 | return parent_id; | |
4194 | } | |
4195 | ||
4196 | #undef getuid | |
4197 | unsigned | |
4198 | sys_getuid () | |
4199 | { | |
4200 | return (getgid () << 16) | getuid (); | |
4201 | } | |
4202 | ||
68c45bf0 | 4203 | #undef read |
86a5659e JB |
4204 | int |
4205 | sys_read (fildes, buf, nbyte) | |
4206 | int fildes; | |
4207 | char *buf; | |
4208 | unsigned int nbyte; | |
4209 | { | |
4210 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4211 | } | |
4212 | ||
4213 | #if 0 | |
4214 | int | |
4215 | sys_write (fildes, buf, nbyte) | |
4216 | int fildes; | |
4217 | char *buf; | |
4218 | unsigned int nbyte; | |
4219 | { | |
4220 | register int nwrote, rtnval = 0; | |
4221 | ||
4222 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4223 | nbyte -= nwrote; | |
4224 | buf += nwrote; | |
4225 | rtnval += nwrote; | |
4226 | } | |
4227 | if (nwrote < 0) | |
4228 | return rtnval ? rtnval : -1; | |
4229 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4230 | return rtnval ? rtnval : -1; | |
4231 | return (rtnval + nwrote); | |
4232 | } | |
4233 | #endif /* 0 */ | |
4234 | ||
4235 | /* | |
4236 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4237 | * end with a newline (carriage return) character, and if they | |
4238 | * don't it adds one (nice of it isn't it!) | |
4239 | * | |
4240 | * Thus we do this stupidity below. | |
4241 | */ | |
4242 | ||
68c45bf0 | 4243 | #undef write |
86a5659e JB |
4244 | int |
4245 | sys_write (fildes, buf, nbytes) | |
4246 | int fildes; | |
4247 | char *buf; | |
4248 | unsigned int nbytes; | |
4249 | { | |
4250 | register char *p; | |
4251 | register char *e; | |
23b0668c JB |
4252 | int sum = 0; |
4253 | struct stat st; | |
4254 | ||
4255 | fstat (fildes, &st); | |
86a5659e | 4256 | p = buf; |
86a5659e JB |
4257 | while (nbytes > 0) |
4258 | { | |
23b0668c JB |
4259 | int len, retval; |
4260 | ||
4261 | /* Handle fixed-length files with carriage control. */ | |
4262 | if (st.st_fab_rfm == FAB$C_FIX | |
4263 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4264 | { | |
4265 | len = st.st_fab_mrs; | |
4266 | retval = write (fildes, p, min (len, nbytes)); | |
4267 | if (retval != len) | |
4268 | return -1; | |
4269 | retval++; /* This skips the implied carriage control */ | |
4270 | } | |
4271 | else | |
4272 | { | |
4273 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4274 | while (*e != '\n' && e > p) e--; | |
4275 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4276 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4277 | len = e + 1 - p; | |
4278 | retval = write (fildes, p, len); | |
4279 | if (retval != len) | |
4280 | return -1; | |
4281 | } | |
4282 | p += retval; | |
4283 | sum += retval; | |
86a5659e JB |
4284 | nbytes -= retval; |
4285 | } | |
4286 | return sum; | |
4287 | } | |
4288 | ||
4289 | /* Create file NEW copying its attributes from file OLD. If | |
4290 | OLD is 0 or does not exist, create based on the value of | |
4291 | vms_stmlf_recfm. */ | |
4292 | ||
4293 | /* Protection value the file should ultimately have. | |
4294 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4295 | static unsigned short int fab_final_pro; | |
4296 | ||
4297 | int | |
4298 | creat_copy_attrs (old, new) | |
4299 | char *old, *new; | |
4300 | { | |
4301 | struct FAB fab = cc$rms_fab; | |
4302 | struct XABPRO xabpro; | |
4303 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4304 | extern int vms_stmlf_recfm; | |
4305 | ||
4306 | if (old) | |
4307 | { | |
4308 | fab.fab$b_fac = FAB$M_GET; | |
4309 | fab.fab$l_fna = old; | |
4310 | fab.fab$b_fns = strlen (old); | |
4311 | fab.fab$l_xab = (char *) &xabpro; | |
4312 | xabpro = cc$rms_xabpro; | |
4313 | xabpro.xab$l_aclbuf = aclbuf; | |
4314 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4315 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4316 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4317 | { |
986ffb24 | 4318 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4319 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4320 | if (xabpro.xab$w_acllen > 0) | |
4321 | { | |
4322 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4323 | /* If the acl buffer was too short, redo open with longer one. | |
4324 | Wouldn't need to do this if there were some system imposed | |
4325 | limit on the size of an ACL, but I can't find any such. */ | |
4326 | { | |
4327 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4328 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4329 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4330 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4331 | else |
4332 | old = 0; | |
4333 | } | |
4334 | } | |
4335 | else | |
4336 | xabpro.xab$l_aclbuf = 0; | |
4337 | } | |
4338 | else | |
4339 | old = 0; | |
4340 | } | |
4341 | fab.fab$l_fna = new; | |
4342 | fab.fab$b_fns = strlen (new); | |
4343 | if (!old) | |
4344 | { | |
4345 | fab.fab$l_xab = 0; | |
4346 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4347 | fab.fab$b_rat = FAB$M_CR; | |
4348 | } | |
4349 | ||
4350 | /* Set the file protections such that we will be able to manipulate | |
4351 | this file. Once we are done writing and renaming it, we will set | |
4352 | the protections back. */ | |
4353 | if (old) | |
4354 | fab_final_pro = xabpro.xab$w_pro; | |
4355 | else | |
986ffb24 | 4356 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4357 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4358 | ||
4359 | /* Create the new file with either default attrs or attrs copied | |
4360 | from old file. */ | |
4361 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4362 | return -1; | |
986ffb24 | 4363 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4364 | /* As this is a "replacement" for creat, return a file descriptor |
4365 | opened for writing. */ | |
4366 | return open (new, O_WRONLY); | |
4367 | } | |
4368 | ||
4369 | #ifdef creat | |
4370 | #undef creat | |
4371 | #include <varargs.h> | |
4372 | #ifdef __GNUC__ | |
4373 | #ifndef va_count | |
4374 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4375 | #endif | |
4376 | #endif | |
4377 | ||
dfcf069d | 4378 | int |
86a5659e JB |
4379 | sys_creat (va_alist) |
4380 | va_dcl | |
4381 | { | |
eb8c3be9 | 4382 | va_list list_incrementer; |
86a5659e JB |
4383 | char *name; |
4384 | int mode; | |
4385 | int rfd; /* related file descriptor */ | |
4386 | int fd; /* Our new file descriptor */ | |
4387 | int count; | |
4388 | struct stat st_buf; | |
4389 | char rfm[12]; | |
4390 | char rat[15]; | |
4391 | char mrs[13]; | |
4392 | char fsz[13]; | |
4393 | extern int vms_stmlf_recfm; | |
4394 | ||
4395 | va_count (count); | |
eb8c3be9 JB |
4396 | va_start (list_incrementer); |
4397 | name = va_arg (list_incrementer, char *); | |
4398 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4399 | if (count > 2) |
eb8c3be9 JB |
4400 | rfd = va_arg (list_incrementer, int); |
4401 | va_end (list_incrementer); | |
86a5659e JB |
4402 | if (count > 2) |
4403 | { | |
4404 | /* Use information from the related file descriptor to set record | |
4405 | format of the newly created file. */ | |
4406 | fstat (rfd, &st_buf); | |
4407 | switch (st_buf.st_fab_rfm) | |
4408 | { | |
4409 | case FAB$C_FIX: | |
4410 | strcpy (rfm, "rfm = fix"); | |
4411 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4412 | strcpy (rat, "rat = "); | |
4413 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4414 | strcat (rat, "cr"); | |
4415 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4416 | strcat (rat, "ftn"); | |
4417 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4418 | strcat (rat, "prn"); | |
4419 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4420 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4421 | strcat (rat, ", blk"); | |
4422 | else | |
4423 | strcat (rat, "blk"); | |
4424 | return creat (name, 0, rfm, rat, mrs); | |
4425 | ||
4426 | case FAB$C_VFC: | |
4427 | strcpy (rfm, "rfm = vfc"); | |
4428 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4429 | strcpy (rat, "rat = "); | |
4430 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4431 | strcat (rat, "cr"); | |
4432 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4433 | strcat (rat, "ftn"); | |
4434 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4435 | strcat (rat, "prn"); | |
4436 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4437 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4438 | strcat (rat, ", blk"); | |
4439 | else | |
4440 | strcat (rat, "blk"); | |
4441 | return creat (name, 0, rfm, rat, fsz); | |
4442 | ||
4443 | case FAB$C_STM: | |
4444 | strcpy (rfm, "rfm = stm"); | |
4445 | break; | |
4446 | ||
4447 | case FAB$C_STMCR: | |
4448 | strcpy (rfm, "rfm = stmcr"); | |
4449 | break; | |
4450 | ||
4451 | case FAB$C_STMLF: | |
4452 | strcpy (rfm, "rfm = stmlf"); | |
4453 | break; | |
4454 | ||
4455 | case FAB$C_UDF: | |
4456 | strcpy (rfm, "rfm = udf"); | |
4457 | break; | |
4458 | ||
4459 | case FAB$C_VAR: | |
4460 | strcpy (rfm, "rfm = var"); | |
4461 | break; | |
4462 | } | |
4463 | strcpy (rat, "rat = "); | |
4464 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4465 | strcat (rat, "cr"); | |
4466 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4467 | strcat (rat, "ftn"); | |
4468 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4469 | strcat (rat, "prn"); | |
4470 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4471 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4472 | strcat (rat, ", blk"); | |
4473 | else | |
4474 | strcat (rat, "blk"); | |
4475 | } | |
4476 | else | |
4477 | { | |
4478 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4479 | strcpy (rat, "rat=cr"); | |
4480 | } | |
4481 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4482 | mode 0 to get the user's default protection. */ | |
4483 | fd = creat (name, 0, rfm, rat); | |
4484 | if (fd < 0 && errno == EEXIST) | |
4485 | { | |
4486 | if (unlink (name) < 0) | |
4487 | report_file_error ("delete", build_string (name)); | |
4488 | fd = creat (name, 0, rfm, rat); | |
4489 | } | |
4490 | return fd; | |
4491 | } | |
4492 | #endif /* creat */ | |
4493 | ||
4494 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
dfcf069d | 4495 | int |
86a5659e JB |
4496 | sys_fwrite (ptr, size, num, fp) |
4497 | register char * ptr; | |
4498 | FILE * fp; | |
4499 | { | |
4500 | register int tot = num * size; | |
4501 | ||
4502 | while (tot--) | |
4503 | fputc (*ptr++, fp); | |
dfcf069d | 4504 | return num; |
86a5659e JB |
4505 | } |
4506 | ||
4507 | /* | |
4508 | * The VMS C library routine creat actually creates a new version of an | |
4509 | * existing file rather than truncating the old version. There are times | |
4510 | * when this is not the desired behavior, for instance, when writing an | |
4511 | * auto save file (you only want one version), or when you don't have | |
4512 | * write permission in the directory containing the file (but the file | |
4513 | * itself is writable). Hence this routine, which is equivalent to | |
4514 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4515 | */ | |
4516 | int | |
4517 | vms_truncate (fn) | |
4518 | char *fn; | |
4519 | { | |
4520 | struct FAB xfab = cc$rms_fab; | |
4521 | struct RAB xrab = cc$rms_rab; | |
4522 | int status; | |
4523 | ||
4524 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4525 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4526 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4527 | xfab.fab$l_fna = fn; | |
4528 | xfab.fab$b_fns = strlen (fn); | |
4529 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4530 | xfab.fab$b_dns = 2; | |
4531 | xrab.rab$l_fab = &xfab; | |
4532 | ||
4533 | /* This gibberish opens the file, positions to the first record, and | |
4534 | deletes all records from there until the end of file. */ | |
986ffb24 | 4535 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4536 | { |
986ffb24 JB |
4537 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4538 | (SYS$FIND (&xrab) & 01) == 01 && | |
4539 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4540 | status = 0; |
4541 | else | |
4542 | status = -1; | |
4543 | } | |
4544 | else | |
4545 | status = -1; | |
986ffb24 | 4546 | SYS$CLOSE (&xfab); |
86a5659e JB |
4547 | return status; |
4548 | } | |
4549 | ||
4550 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4551 | SYSPRV or a readable SYSUAF.DAT. */ | |
4552 | ||
4553 | #ifdef READ_SYSUAF | |
4554 | /* | |
4555 | * getuaf.c | |
4556 | * | |
4557 | * Routine to read the VMS User Authorization File and return | |
4558 | * a specific user's record. | |
4559 | */ | |
4560 | ||
4561 | static struct UAF retuaf; | |
4562 | ||
4563 | struct UAF * | |
4564 | get_uaf_name (uname) | |
4565 | char * uname; | |
4566 | { | |
4567 | register status; | |
4568 | struct FAB uaf_fab; | |
4569 | struct RAB uaf_rab; | |
4570 | ||
4571 | uaf_fab = cc$rms_fab; | |
4572 | uaf_rab = cc$rms_rab; | |
4573 | /* initialize fab fields */ | |
4574 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4575 | uaf_fab.fab$b_fns = 21; | |
4576 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4577 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4578 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4579 | /* initialize rab fields */ | |
4580 | uaf_rab.rab$l_fab = &uaf_fab; | |
4581 | /* open the User Authorization File */ | |
986ffb24 | 4582 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4583 | if (!(status&1)) |
4584 | { | |
4585 | errno = EVMSERR; | |
4586 | vaxc$errno = status; | |
4587 | return 0; | |
4588 | } | |
986ffb24 | 4589 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4590 | if (!(status&1)) |
4591 | { | |
4592 | errno = EVMSERR; | |
4593 | vaxc$errno = status; | |
4594 | return 0; | |
4595 | } | |
4596 | /* read the requested record - index is in uname */ | |
4597 | uaf_rab.rab$l_kbf = uname; | |
4598 | uaf_rab.rab$b_ksz = strlen (uname); | |
4599 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4600 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4601 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4602 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4603 | if (!(status&1)) |
4604 | { | |
4605 | errno = EVMSERR; | |
4606 | vaxc$errno = status; | |
4607 | return 0; | |
4608 | } | |
4609 | /* close the User Authorization File */ | |
986ffb24 | 4610 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4611 | if (!(status&1)) |
4612 | { | |
4613 | errno = EVMSERR; | |
4614 | vaxc$errno = status; | |
4615 | return 0; | |
4616 | } | |
986ffb24 | 4617 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4618 | if (!(status&1)) |
4619 | { | |
4620 | errno = EVMSERR; | |
4621 | vaxc$errno = status; | |
4622 | return 0; | |
4623 | } | |
4624 | return &retuaf; | |
4625 | } | |
4626 | ||
4627 | struct UAF * | |
4628 | get_uaf_uic (uic) | |
4629 | unsigned long uic; | |
4630 | { | |
4631 | register status; | |
4632 | struct FAB uaf_fab; | |
4633 | struct RAB uaf_rab; | |
4634 | ||
4635 | uaf_fab = cc$rms_fab; | |
4636 | uaf_rab = cc$rms_rab; | |
4637 | /* initialize fab fields */ | |
4638 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4639 | uaf_fab.fab$b_fns = 21; | |
4640 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4641 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4642 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4643 | /* initialize rab fields */ | |
4644 | uaf_rab.rab$l_fab = &uaf_fab; | |
4645 | /* open the User Authorization File */ | |
986ffb24 | 4646 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4647 | if (!(status&1)) |
4648 | { | |
4649 | errno = EVMSERR; | |
4650 | vaxc$errno = status; | |
4651 | return 0; | |
4652 | } | |
986ffb24 | 4653 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4654 | if (!(status&1)) |
4655 | { | |
4656 | errno = EVMSERR; | |
4657 | vaxc$errno = status; | |
4658 | return 0; | |
4659 | } | |
4660 | /* read the requested record - index is in uic */ | |
4661 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4662 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4663 | uaf_rab.rab$b_ksz = sizeof uic; | |
4664 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4665 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4666 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4667 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4668 | if (!(status&1)) |
4669 | { | |
4670 | errno = EVMSERR; | |
4671 | vaxc$errno = status; | |
4672 | return 0; | |
4673 | } | |
4674 | /* close the User Authorization File */ | |
986ffb24 | 4675 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4676 | if (!(status&1)) |
4677 | { | |
4678 | errno = EVMSERR; | |
4679 | vaxc$errno = status; | |
4680 | return 0; | |
4681 | } | |
986ffb24 | 4682 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4683 | if (!(status&1)) |
4684 | { | |
4685 | errno = EVMSERR; | |
4686 | vaxc$errno = status; | |
4687 | return 0; | |
4688 | } | |
4689 | return &retuaf; | |
4690 | } | |
4691 | ||
4692 | static struct passwd retpw; | |
4693 | ||
4694 | struct passwd * | |
4695 | cnv_uaf_pw (up) | |
4696 | struct UAF * up; | |
4697 | { | |
4698 | char * ptr; | |
4699 | ||
4700 | /* copy these out first because if the username is 32 chars, the next | |
4701 | section will overwrite the first byte of the UIC */ | |
4702 | retpw.pw_uid = up->uaf$w_mem; | |
4703 | retpw.pw_gid = up->uaf$w_grp; | |
4704 | ||
ea5a0917 | 4705 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4706 | byte beyond the end of the field, but what the heck... */ |
4707 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4708 | while (ptr[-1] == ' ') | |
4709 | ptr--; | |
4710 | *ptr = '\0'; | |
4711 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4712 | ||
4713 | /* the rest of these are counted ascii strings */ | |
4714 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4715 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4716 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4717 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4718 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4719 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4720 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4721 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4722 | ||
4723 | return &retpw; | |
4724 | } | |
4725 | #else /* not READ_SYSUAF */ | |
4726 | static struct passwd retpw; | |
4727 | #endif /* not READ_SYSUAF */ | |
4728 | ||
4729 | struct passwd * | |
4730 | getpwnam (name) | |
4731 | char * name; | |
4732 | { | |
4733 | #ifdef READ_SYSUAF | |
4734 | struct UAF *up; | |
4735 | #else | |
4736 | char * user; | |
4737 | char * dir; | |
4738 | unsigned char * full; | |
4739 | #endif /* READ_SYSUAF */ | |
4740 | char *ptr = name; | |
4741 | ||
4742 | while (*ptr) | |
4743 | { | |
4744 | if ('a' <= *ptr && *ptr <= 'z') | |
4745 | *ptr -= 040; | |
4746 | ptr++; | |
4747 | } | |
4748 | #ifdef READ_SYSUAF | |
4749 | if (!(up = get_uaf_name (name))) | |
4750 | return 0; | |
4751 | return cnv_uaf_pw (up); | |
4752 | #else | |
4753 | if (strcmp (name, getenv ("USER")) == 0) | |
4754 | { | |
4755 | retpw.pw_uid = getuid (); | |
4756 | retpw.pw_gid = getgid (); | |
4757 | strcpy (retpw.pw_name, name); | |
4758 | if (full = egetenv ("FULLNAME")) | |
4759 | strcpy (retpw.pw_gecos, full); | |
4760 | else | |
4761 | *retpw.pw_gecos = '\0'; | |
4762 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4763 | *retpw.pw_shell = '\0'; | |
4764 | return &retpw; | |
4765 | } | |
4766 | else | |
4767 | return 0; | |
4768 | #endif /* not READ_SYSUAF */ | |
4769 | } | |
4770 | ||
4771 | struct passwd * | |
4772 | getpwuid (uid) | |
4773 | unsigned long uid; | |
4774 | { | |
4775 | #ifdef READ_SYSUAF | |
4776 | struct UAF * up; | |
4777 | ||
4778 | if (!(up = get_uaf_uic (uid))) | |
4779 | return 0; | |
4780 | return cnv_uaf_pw (up); | |
4781 | #else | |
4782 | if (uid == sys_getuid ()) | |
4783 | return getpwnam (egetenv ("USER")); | |
4784 | else | |
4785 | return 0; | |
4786 | #endif /* not READ_SYSUAF */ | |
4787 | } | |
4788 | ||
4789 | /* return total address space available to the current process. This is | |
4790 | the sum of the current p0 size, p1 size and free page table entries | |
4791 | available. */ | |
dfcf069d | 4792 | int |
86a5659e JB |
4793 | vlimit () |
4794 | { | |
4795 | int item_code; | |
4796 | unsigned long free_pages; | |
4797 | unsigned long frep0va; | |
4798 | unsigned long frep1va; | |
4799 | register status; | |
4800 | ||
4801 | item_code = JPI$_FREPTECNT; | |
4802 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4803 | { | |
4804 | errno = EVMSERR; | |
4805 | vaxc$errno = status; | |
4806 | return -1; | |
4807 | } | |
4808 | free_pages *= 512; | |
4809 | ||
4810 | item_code = JPI$_FREP0VA; | |
4811 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4812 | { | |
4813 | errno = EVMSERR; | |
4814 | vaxc$errno = status; | |
4815 | return -1; | |
4816 | } | |
4817 | item_code = JPI$_FREP1VA; | |
4818 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4819 | { | |
4820 | errno = EVMSERR; | |
4821 | vaxc$errno = status; | |
4822 | return -1; | |
4823 | } | |
4824 | ||
4825 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4826 | } | |
4827 | ||
dfcf069d | 4828 | int |
86a5659e JB |
4829 | define_logical_name (varname, string) |
4830 | char *varname; | |
4831 | char *string; | |
4832 | { | |
4833 | struct dsc$descriptor_s strdsc = | |
4834 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4835 | struct dsc$descriptor_s envdsc = | |
4836 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4837 | struct dsc$descriptor_s lnmdsc = | |
4838 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4839 | ||
4840 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4841 | } | |
4842 | ||
dfcf069d | 4843 | int |
86a5659e JB |
4844 | delete_logical_name (varname) |
4845 | char *varname; | |
4846 | { | |
4847 | struct dsc$descriptor_s envdsc = | |
4848 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4849 | struct dsc$descriptor_s lnmdsc = | |
4850 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4851 | ||
4852 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4853 | } | |
4854 | ||
dfcf069d | 4855 | int |
86a5659e | 4856 | ulimit () |
dfcf069d AS |
4857 | { |
4858 | return 0; | |
4859 | } | |
86a5659e | 4860 | |
dfcf069d | 4861 | int |
86a5659e | 4862 | setpgrp () |
dfcf069d AS |
4863 | { |
4864 | return 0; | |
4865 | } | |
86a5659e | 4866 | |
dfcf069d | 4867 | int |
86a5659e JB |
4868 | execvp () |
4869 | { | |
4870 | error ("execvp system call not implemented"); | |
dfcf069d | 4871 | return -1; |
86a5659e JB |
4872 | } |
4873 | ||
4874 | int | |
4875 | rename (from, to) | |
4876 | char *from, *to; | |
4877 | { | |
4878 | int status; | |
4879 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4880 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4881 | char from_esn[NAM$C_MAXRSS]; | |
4882 | char to_esn[NAM$C_MAXRSS]; | |
4883 | ||
4884 | from_fab.fab$l_fna = from; | |
4885 | from_fab.fab$b_fns = strlen (from); | |
4886 | from_fab.fab$l_nam = &from_nam; | |
4887 | from_fab.fab$l_fop = FAB$M_NAM; | |
4888 | ||
4889 | from_nam.nam$l_esa = from_esn; | |
4890 | from_nam.nam$b_ess = sizeof from_esn; | |
4891 | ||
4892 | to_fab.fab$l_fna = to; | |
4893 | to_fab.fab$b_fns = strlen (to); | |
4894 | to_fab.fab$l_nam = &to_nam; | |
4895 | to_fab.fab$l_fop = FAB$M_NAM; | |
4896 | ||
4897 | to_nam.nam$l_esa = to_esn; | |
4898 | to_nam.nam$b_ess = sizeof to_esn; | |
4899 | ||
4900 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4901 | ||
4902 | if (status & 1) | |
4903 | return 0; | |
4904 | else | |
4905 | { | |
4906 | if (status == RMS$_DEV) | |
4907 | errno = EXDEV; | |
4908 | else | |
4909 | errno = EVMSERR; | |
4910 | vaxc$errno = status; | |
4911 | return -1; | |
4912 | } | |
4913 | } | |
4914 | ||
4915 | /* This function renames a file like `rename', but it strips | |
4916 | the version number from the "to" filename, such that the "to" file is | |
4917 | will always be a new version. It also sets the file protection once it is | |
4918 | finished. The protection that we will use is stored in fab_final_pro, | |
4919 | and was set when we did a creat_copy_attrs to create the file that we | |
4920 | are renaming. | |
4921 | ||
4922 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4923 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4924 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4925 | the W and D bits together. */ | |
4926 | ||
4927 | ||
4928 | static struct fibdef fib; /* We need this initialized to zero */ | |
4929 | char vms_file_written[NAM$C_MAXRSS]; | |
4930 | ||
4931 | int | |
4932 | rename_sans_version (from,to) | |
4933 | char *from, *to; | |
4934 | { | |
4935 | short int chan; | |
4936 | int stat; | |
4937 | short int iosb[4]; | |
4938 | int status; | |
4939 | struct FAB to_fab = cc$rms_fab; | |
4940 | struct NAM to_nam = cc$rms_nam; | |
4941 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4942 | struct dsc$descriptor fib_attr[2] | |
4943 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4944 | char to_esn[NAM$C_MAXRSS]; | |
4945 | ||
4946 | $DESCRIPTOR (disk,to_esn); | |
4947 | ||
4948 | to_fab.fab$l_fna = to; | |
4949 | to_fab.fab$b_fns = strlen (to); | |
4950 | to_fab.fab$l_nam = &to_nam; | |
4951 | to_fab.fab$l_fop = FAB$M_NAM; | |
4952 | ||
4953 | to_nam.nam$l_esa = to_esn; | |
4954 | to_nam.nam$b_ess = sizeof to_esn; | |
4955 | ||
4956 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4957 | ||
4958 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4959 | *(to_nam.nam$l_ver) = '\0'; | |
4960 | ||
4961 | stat = rename (from, to_esn); | |
4962 | if (stat < 0) | |
4963 | return stat; | |
4964 | ||
4965 | strcpy (vms_file_written, to_esn); | |
4966 | ||
4967 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4968 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4969 | ||
4970 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4971 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4972 | |
4973 | /* Copy these fields into the fib */ | |
4974 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4975 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4976 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4977 | ||
986ffb24 | 4978 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4979 | |
986ffb24 | 4980 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4981 | if (!stat) |
986ffb24 JB |
4982 | LIB$SIGNAL (stat); |
4983 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4984 | 0, 0, 0, &fib_attr, 0); |
4985 | if (!stat) | |
986ffb24 JB |
4986 | LIB$SIGNAL (stat); |
4987 | stat = SYS$DASSGN (chan); | |
86a5659e | 4988 | if (!stat) |
986ffb24 | 4989 | LIB$SIGNAL (stat); |
0137dbf7 | 4990 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4991 | return 0; |
4992 | } | |
4993 | ||
dfcf069d | 4994 | int |
86a5659e JB |
4995 | link (file, new) |
4996 | char * file, * new; | |
4997 | { | |
4998 | register status; | |
4999 | struct FAB fab; | |
5000 | struct NAM nam; | |
5001 | unsigned short fid[3]; | |
5002 | char esa[NAM$C_MAXRSS]; | |
5003 | ||
5004 | fab = cc$rms_fab; | |
5005 | fab.fab$l_fop = FAB$M_OFP; | |
5006 | fab.fab$l_fna = file; | |
5007 | fab.fab$b_fns = strlen (file); | |
5008 | fab.fab$l_nam = &nam; | |
5009 | ||
5010 | nam = cc$rms_nam; | |
5011 | nam.nam$l_esa = esa; | |
5012 | nam.nam$b_ess = NAM$C_MAXRSS; | |
5013 | ||
5014 | status = SYS$PARSE (&fab); | |
5015 | if ((status & 1) == 0) | |
5016 | { | |
5017 | errno = EVMSERR; | |
5018 | vaxc$errno = status; | |
5019 | return -1; | |
5020 | } | |
5021 | status = SYS$SEARCH (&fab); | |
5022 | if ((status & 1) == 0) | |
5023 | { | |
5024 | errno = EVMSERR; | |
5025 | vaxc$errno = status; | |
5026 | return -1; | |
5027 | } | |
5028 | ||
5029 | fid[0] = nam.nam$w_fid[0]; | |
5030 | fid[1] = nam.nam$w_fid[1]; | |
5031 | fid[2] = nam.nam$w_fid[2]; | |
5032 | ||
5033 | fab.fab$l_fna = new; | |
5034 | fab.fab$b_fns = strlen (new); | |
5035 | ||
5036 | status = SYS$PARSE (&fab); | |
5037 | if ((status & 1) == 0) | |
5038 | { | |
5039 | errno = EVMSERR; | |
5040 | vaxc$errno = status; | |
5041 | return -1; | |
5042 | } | |
5043 | ||
5044 | nam.nam$w_fid[0] = fid[0]; | |
5045 | nam.nam$w_fid[1] = fid[1]; | |
5046 | nam.nam$w_fid[2] = fid[2]; | |
5047 | ||
5048 | nam.nam$l_esa = nam.nam$l_name; | |
5049 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
5050 | ||
5051 | status = SYS$ENTER (&fab); | |
5052 | if ((status & 1) == 0) | |
5053 | { | |
5054 | errno = EVMSERR; | |
5055 | vaxc$errno = status; | |
5056 | return -1; | |
5057 | } | |
5058 | ||
5059 | return 0; | |
5060 | } | |
5061 | ||
dfcf069d | 5062 | void |
86a5659e JB |
5063 | croak (badfunc) |
5064 | char *badfunc; | |
5065 | { | |
5066 | printf ("%s not yet implemented\r\n", badfunc); | |
5067 | reset_sys_modes (); | |
5068 | exit (1); | |
5069 | } | |
5070 | ||
5071 | long | |
5072 | random () | |
5073 | { | |
5074 | /* Arrange to return a range centered on zero. */ | |
5075 | return rand () - (1 << 30); | |
5076 | } | |
5077 | ||
dfcf069d | 5078 | void |
86a5659e JB |
5079 | srandom (seed) |
5080 | { | |
5081 | srand (seed); | |
5082 | } | |
5083 | #endif /* VMS */ | |
5084 | \f | |
b97ab886 | 5085 | #ifdef AIXHFT |
86a5659e JB |
5086 | |
5087 | /* Called from init_sys_modes. */ | |
dfcf069d | 5088 | void |
86a5659e JB |
5089 | hft_init () |
5090 | { | |
5091 | int junk; | |
5092 | ||
5093 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5094 | if we are on an HFT by trying to get an HFT error code. If this | |
5095 | call fails, we're not on an HFT. */ | |
5096 | #ifdef IBMR2AIX | |
5097 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5098 | return; | |
5099 | #else /* not IBMR2AIX */ | |
5100 | if (ioctl (0, HFQEIO, 0) < 0) | |
5101 | return; | |
5102 | #endif /* not IBMR2AIX */ | |
5103 | ||
5104 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5105 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5106 | there's no way to determine the old mapping, so in reset_sys_modes | |
5107 | we need to assume that the normal map had been present. Of course, this | |
5108 | code also doesn't help if on a terminal emulator which doesn't understand | |
c4ea52a6 | 5109 | HFT VTD's. */ |
86a5659e JB |
5110 | { |
5111 | struct hfbuf buf; | |
5112 | struct hfkeymap keymap; | |
5113 | ||
5114 | buf.hf_bufp = (char *)&keymap; | |
5115 | buf.hf_buflen = sizeof (keymap); | |
5116 | keymap.hf_nkeys = 2; | |
5117 | keymap.hfkey[0].hf_kpos = 15; | |
5118 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5119 | #ifdef IBMR2AIX | |
5120 | keymap.hfkey[0].hf_keyidh = '<'; | |
5121 | #else /* not IBMR2AIX */ | |
5122 | keymap.hfkey[0].hf_page = '<'; | |
5123 | #endif /* not IBMR2AIX */ | |
5124 | keymap.hfkey[0].hf_char = 127; | |
5125 | keymap.hfkey[1].hf_kpos = 15; | |
5126 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5127 | #ifdef IBMR2AIX | |
5128 | keymap.hfkey[1].hf_keyidh = '<'; | |
5129 | #else /* not IBMR2AIX */ | |
5130 | keymap.hfkey[1].hf_page = '<'; | |
5131 | #endif /* not IBMR2AIX */ | |
5132 | keymap.hfkey[1].hf_char = 127; | |
5133 | hftctl (0, HFSKBD, &buf); | |
5134 | } | |
5135 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
5136 | at times. */ | |
5137 | line_ins_del_ok = char_ins_del_ok = 0; | |
5138 | } | |
5139 | ||
c4ea52a6 | 5140 | /* Reset the rubout key to backspace. */ |
86a5659e | 5141 | |
dfcf069d | 5142 | void |
86a5659e JB |
5143 | hft_reset () |
5144 | { | |
5145 | struct hfbuf buf; | |
5146 | struct hfkeymap keymap; | |
5147 | int junk; | |
5148 | ||
5149 | #ifdef IBMR2AIX | |
5150 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5151 | return; | |
5152 | #else /* not IBMR2AIX */ | |
5153 | if (ioctl (0, HFQEIO, 0) < 0) | |
5154 | return; | |
5155 | #endif /* not IBMR2AIX */ | |
5156 | ||
5157 | buf.hf_bufp = (char *)&keymap; | |
5158 | buf.hf_buflen = sizeof (keymap); | |
5159 | keymap.hf_nkeys = 2; | |
5160 | keymap.hfkey[0].hf_kpos = 15; | |
5161 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5162 | #ifdef IBMR2AIX | |
5163 | keymap.hfkey[0].hf_keyidh = '<'; | |
5164 | #else /* not IBMR2AIX */ | |
5165 | keymap.hfkey[0].hf_page = '<'; | |
5166 | #endif /* not IBMR2AIX */ | |
5167 | keymap.hfkey[0].hf_char = 8; | |
5168 | keymap.hfkey[1].hf_kpos = 15; | |
5169 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5170 | #ifdef IBMR2AIX | |
5171 | keymap.hfkey[1].hf_keyidh = '<'; | |
5172 | #else /* not IBMR2AIX */ | |
5173 | keymap.hfkey[1].hf_page = '<'; | |
5174 | #endif /* not IBMR2AIX */ | |
5175 | keymap.hfkey[1].hf_char = 8; | |
5176 | hftctl (0, HFSKBD, &buf); | |
5177 | } | |
5178 | ||
b97ab886 | 5179 | #endif /* AIXHFT */ |
c238be24 RS |
5180 | |
5181 | #ifdef USE_DL_STUBS | |
5182 | ||
5183 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5184 | X11 libraries may refer to these functions but (we hope) do not | |
5185 | actually call them. */ | |
5186 | ||
5187 | void * | |
5188 | dlopen () | |
5189 | { | |
5190 | return 0; | |
5191 | } | |
5192 | ||
5193 | void * | |
5194 | dlsym () | |
5195 | { | |
5196 | return 0; | |
5197 | } | |
5198 | ||
5199 | int | |
5200 | dlclose () | |
5201 | { | |
5202 | return -1; | |
5203 | } | |
5204 | ||
5205 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5206 | \f |
5207 | #ifndef BSTRING | |
5208 | ||
5209 | #ifndef bzero | |
5210 | ||
5211 | void | |
5212 | bzero (b, length) | |
5213 | register char *b; | |
5214 | register int length; | |
5215 | { | |
5216 | #ifdef VMS | |
5217 | short zero = 0; | |
5218 | long max_str = 65535; | |
5219 | ||
5220 | while (length > max_str) { | |
5221 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5222 | length -= max_str; | |
5223 | b += max_str; | |
5224 | } | |
5225 | max_str = length; | |
5226 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5227 | #else | |
5228 | while (length-- > 0) | |
5229 | *b++ = 0; | |
5230 | #endif /* not VMS */ | |
5231 | } | |
5232 | ||
5233 | #endif /* no bzero */ | |
5234 | #endif /* BSTRING */ | |
5235 | ||
c7f93f28 | 5236 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5237 | #undef bcopy |
5238 | ||
5239 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5240 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5241 | bcopy (b1, b2, length) | |
5242 | register char *b1; | |
5243 | register char *b2; | |
5244 | register int length; | |
5245 | { | |
5246 | #ifdef VMS | |
5247 | long max_str = 65535; | |
5248 | ||
5249 | while (length > max_str) { | |
5250 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5251 | length -= max_str; | |
5252 | b1 += max_str; | |
5253 | b2 += max_str; | |
5254 | } | |
5255 | max_str = length; | |
5256 | (void) LIB$MOVC3 (&length, b1, b2); | |
5257 | #else | |
5258 | while (length-- > 0) | |
5259 | *b2++ = *b1++; | |
5260 | #endif /* not VMS */ | |
5261 | } | |
dfcf069d | 5262 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ |
51417996 | 5263 | |
c7f93f28 | 5264 | #ifndef BSTRING |
51417996 RS |
5265 | #ifndef bcmp |
5266 | int | |
5267 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5268 | register char *b1; | |
5269 | register char *b2; | |
5270 | register int length; | |
5271 | { | |
5272 | #ifdef VMS | |
5273 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5274 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5275 | ||
5276 | return STR$COMPARE (&src1, &src2); | |
5277 | #else | |
5278 | while (length-- > 0) | |
5279 | if (*b1++ != *b2++) | |
5280 | return 1; | |
5281 | ||
5282 | return 0; | |
5283 | #endif /* not VMS */ | |
5284 | } | |
5285 | #endif /* no bcmp */ | |
5286 | #endif /* not BSTRING */ | |
68c45bf0 PE |
5287 | \f |
5288 | #ifndef HAVE_STRSIGNAL | |
5289 | char * | |
5290 | strsignal (code) | |
5291 | int code; | |
5292 | { | |
5293 | char *signame = 0; | |
5294 | ||
5295 | if (0 <= code && code < NSIG) | |
5296 | { | |
5297 | #ifdef VMS | |
5298 | signame = sys_errlist[code]; | |
5299 | #else | |
5300 | /* Cast to suppress warning if the table has const char *. */ | |
5301 | signame = (char *) sys_siglist[code]; | |
5302 | #endif | |
5303 | } | |
c4ea52a6 | 5304 | |
68c45bf0 PE |
5305 | return signame; |
5306 | } | |
5307 | #endif /* HAVE_STRSIGNAL */ | |
c4ea52a6 | 5308 |