Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
275464e7 SM |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
3 | 2003, 2004 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> | |
5890e9f7 | 27 | #include <stdio.h> |
86a5659e | 28 | #include <setjmp.h> |
d3eb3bfa DL |
29 | #ifdef HAVE_UNISTD_H |
30 | #include <unistd.h> | |
31 | #endif | |
86a5659e | 32 | #include "lisp.h" |
8296bbf8 DL |
33 | /* Including stdlib.h isn't necessarily enough to get srandom |
34 | declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */ | |
35 | #ifdef HAVE_RANDOM | |
1bfb1345 DL |
36 | #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets |
37 | random prototyped as returning `int'. It looks to me as | |
38 | though the best way to DTRT is to prefer the rand48 functions | |
39 | (per libc.info). -- fx */ | |
8296bbf8 | 40 | extern long int random P_ ((void)); |
1bfb1345 | 41 | #endif |
ff4c29f4 GM |
42 | #if 0 /* Don't prototype srandom; it takes an unsigned argument on |
43 | some systems, and an unsigned long on others, like FreeBSD | |
44 | 4.1. */ | |
8296bbf8 DL |
45 | extern void srandom P_ ((unsigned int)); |
46 | #endif | |
ff4c29f4 | 47 | #endif |
8296bbf8 | 48 | |
9ac0d9e0 | 49 | #include "blockinput.h" |
86a5659e JB |
50 | #undef NULL |
51 | ||
e0f712ba | 52 | #ifdef MAC_OS8 |
1a578e9b AC |
53 | /* It is essential to include stdlib.h so that this file picks up |
54 | the correct definitions of rand, srand, and RAND_MAX. | |
55 | Otherwise random numbers will not work correctly. */ | |
56 | #include <stdlib.h> | |
57 | ||
c4ea52a6 RS |
58 | #ifndef subprocesses |
59 | /* Nonzero means delete a process right away if it exits (process.c). */ | |
60 | static int delete_exited_processes; | |
61 | #endif | |
e0f712ba | 62 | #endif /* MAC_OS8 */ |
c4ea52a6 | 63 | |
fe03522b | 64 | #ifdef WINDOWSNT |
e15b6288 JR |
65 | #define read sys_read |
66 | #define write sys_write | |
fe03522b | 67 | #include <windows.h> |
e36ec798 AI |
68 | #ifndef NULL |
69 | #define NULL 0 | |
70 | #endif | |
fe03522b RS |
71 | #endif /* not WINDOWSNT */ |
72 | ||
986ffb24 JB |
73 | /* Does anyone other than VMS need this? */ |
74 | #ifndef fwrite | |
75 | #define sys_fwrite fwrite | |
76 | #else | |
77 | #undef fwrite | |
78 | #endif | |
79 | ||
86a5659e JB |
80 | #include <sys/types.h> |
81 | #include <sys/stat.h> | |
82 | #include <errno.h> | |
83 | ||
f95c3f91 | 84 | #ifdef HAVE_SETPGID |
2b7e8799 | 85 | #if !defined (USG) || defined (BSD_PGRPS) |
c8875a65 | 86 | #undef setpgrp |
f95c3f91 GM |
87 | #define setpgrp setpgid |
88 | #endif | |
2b7e8799 | 89 | #endif |
f95c3f91 | 90 | |
b05af5d3 PE |
91 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
92 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
93 | #include <sys/systeminfo.h> | |
94 | #endif | |
95 | ||
207bdbdb RS |
96 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
97 | #include <dos.h> | |
98 | #include "dosfns.h" | |
99 | #include "msdos.h" | |
100 | #include <sys/param.h> | |
15614e61 RS |
101 | |
102 | #if __DJGPP__ > 1 | |
103 | extern int etext; | |
104 | extern unsigned start __asm__ ("start"); | |
105 | #endif | |
207bdbdb RS |
106 | #endif |
107 | ||
e36ec798 | 108 | #ifndef USE_CRT_DLL |
9ee9af7a | 109 | #ifndef errno |
86a5659e | 110 | extern int errno; |
9ee9af7a | 111 | #endif |
e36ec798 | 112 | #endif |
86a5659e | 113 | |
bb4bc8e2 RM |
114 | #ifdef VMS |
115 | #include <rms.h> | |
116 | #include <ttdef.h> | |
117 | #include <tt2def.h> | |
118 | #include <iodef.h> | |
119 | #include <ssdef.h> | |
120 | #include <descrip.h> | |
121 | #include <fibdef.h> | |
122 | #include <atrdef.h> | |
123 | #include <ctype.h> | |
124 | #include <string.h> | |
125 | #ifdef __GNUC__ | |
126 | #include <sys/file.h> | |
127 | #else | |
128 | #include <file.h> | |
129 | #endif | |
130 | #undef F_SETFL | |
131 | #ifndef RAB$C_BID | |
132 | #include <rab.h> | |
133 | #endif | |
fe03522b | 134 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
135 | #endif /* VMS */ |
136 | ||
7ce1c4de RS |
137 | #ifndef VMS |
138 | #include <sys/file.h> | |
139 | #endif /* not VMS */ | |
140 | ||
612221ab | 141 | #ifdef HAVE_FCNTL_H |
bb4bc8e2 RM |
142 | #include <fcntl.h> |
143 | #endif | |
86a5659e | 144 | |
207bdbdb | 145 | #ifndef MSDOS |
86a5659e | 146 | #include <sys/ioctl.h> |
207bdbdb | 147 | #endif |
2a633456 | 148 | |
e04a4e0d | 149 | #include "systty.h" |
94c8642a | 150 | #include "syswait.h" |
86a5659e | 151 | |
86a5659e JB |
152 | #ifdef BROKEN_TIOCGWINSZ |
153 | #undef TIOCGWINSZ | |
8dca3179 | 154 | #undef TIOCSWINSZ |
86a5659e JB |
155 | #endif |
156 | ||
c4ea52a6 | 157 | #if defined (USG) || defined (DGUX) |
86a5659e | 158 | #include <sys/utsname.h> |
86a5659e JB |
159 | #ifndef MEMORY_IN_STRING_H |
160 | #include <memory.h> | |
161 | #endif | |
81444907 | 162 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
163 | #ifdef NEED_SIOCTL |
164 | #include <sys/sioctl.h> | |
165 | #endif | |
166 | #ifdef NEED_PTEM_H | |
167 | #include <sys/stream.h> | |
168 | #include <sys/ptem.h> | |
169 | #endif | |
81444907 | 170 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 171 | #endif /* USG or DGUX */ |
86a5659e | 172 | |
86a5659e JB |
173 | extern int quit_char; |
174 | ||
e36ec798 | 175 | #include "keyboard.h" |
0137dbf7 | 176 | #include "frame.h" |
86a5659e JB |
177 | #include "window.h" |
178 | #include "termhooks.h" | |
179 | #include "termchar.h" | |
180 | #include "termopts.h" | |
181 | #include "dispextern.h" | |
182 | #include "process.h" | |
183 | ||
fe03522b RS |
184 | #ifdef WINDOWSNT |
185 | #include <direct.h> | |
186 | /* In process.h which conflicts with the local copy. */ | |
187 | #define _P_WAIT 0 | |
188 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
189 | int _CRTAPI1 _getpid (void); | |
190 | #endif | |
191 | ||
86a5659e JB |
192 | #ifdef NONSYSTEM_DIR_LIBRARY |
193 | #include "ndir.h" | |
194 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
195 | ||
91bac16a JB |
196 | #include "syssignal.h" |
197 | #include "systime.h" | |
d79998bc KH |
198 | #ifdef HAVE_UTIME_H |
199 | #include <utime.h> | |
200 | #endif | |
201 | ||
202 | #ifndef HAVE_UTIMES | |
203 | #ifndef HAVE_STRUCT_UTIMBUF | |
204 | /* We want to use utime rather than utimes, but we couldn't find the | |
205 | structure declaration. We'll use the traditional one. */ | |
206 | struct utimbuf { | |
207 | long actime; | |
208 | long modtime; | |
209 | }; | |
210 | #endif | |
211 | #endif | |
86a5659e | 212 | |
a00d5589 RS |
213 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
214 | #ifndef LPASS8 | |
215 | #define LPASS8 0 | |
216 | #endif | |
217 | ||
218 | #ifdef BSD4_1 | |
219 | #define LNOFLSH 0100000 | |
220 | #endif | |
221 | ||
86a5659e JB |
222 | static int baud_convert[] = |
223 | #ifdef BAUD_CONVERT | |
224 | BAUD_CONVERT; | |
225 | #else | |
226 | { | |
227 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
228 | 1800, 2400, 4800, 9600, 19200, 38400 | |
229 | }; | |
230 | #endif | |
231 | ||
f0d21750 GM |
232 | #ifdef HAVE_SPEED_T |
233 | #include <termios.h> | |
f0d21750 | 234 | #else |
ba5971b3 | 235 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
ba5971b3 | 236 | #else |
8a2a6032 | 237 | #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX) |
515b04d0 | 238 | #include <termios.h> |
f2361c60 | 239 | #endif |
ba5971b3 | 240 | #endif |
f0d21750 | 241 | #endif |
86a5659e | 242 | |
5bdd7bdd GM |
243 | int emacs_ospeed; |
244 | ||
91bac16a | 245 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
246 | Under Unix, this is normally zero except when using X; |
247 | under VMS, we place the input channel number here. */ | |
248 | int input_fd; | |
b9c4113e RS |
249 | |
250 | void croak P_ ((char *)); | |
251 | ||
6d0d20a1 RS |
252 | #ifdef AIXHFT |
253 | void hft_init (); | |
254 | void hft_reset (); | |
255 | #endif | |
b9c4113e | 256 | |
89723395 GM |
257 | /* Temporary used by `sigblock' when defined in terms of signprocmask. */ |
258 | ||
259 | SIGMASKTYPE sigprocmask_set; | |
260 | ||
64e971c3 RS |
261 | \f |
262 | /* Specify a different file descriptor for further input operations. */ | |
263 | ||
264 | void | |
265 | change_input_fd (fd) | |
266 | int fd; | |
267 | { | |
268 | input_fd = fd; | |
269 | } | |
270 | ||
271 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 272 | |
08633194 | 273 | void |
86a5659e JB |
274 | discard_tty_input () |
275 | { | |
fe03522b | 276 | #ifndef WINDOWSNT |
91bac16a | 277 | struct emacs_tty buf; |
86a5659e JB |
278 | |
279 | if (noninteractive) | |
280 | return; | |
281 | ||
282 | /* Discarding input is not safe when the input could contain | |
283 | replies from the X server. So don't do it. */ | |
284 | if (read_socket_hook) | |
285 | return; | |
286 | ||
287 | #ifdef VMS | |
288 | end_kbd_input (); | |
91bac16a JB |
289 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
290 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
291 | queue_kbd_input (); |
292 | #else /* not VMS */ | |
293 | #ifdef APOLLO | |
294 | { | |
295 | int zero = 0; | |
64e971c3 | 296 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
297 | } |
298 | #else /* not Apollo */ | |
fe03522b | 299 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 300 | while (dos_keyread () != -1) |
fe03522b | 301 | ; |
207bdbdb | 302 | #else /* not MSDOS */ |
91bac16a JB |
303 | EMACS_GET_TTY (input_fd, &buf); |
304 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 305 | #endif /* not MSDOS */ |
86a5659e JB |
306 | #endif /* not Apollo */ |
307 | #endif /* not VMS */ | |
fe03522b | 308 | #endif /* not WINDOWSNT */ |
86a5659e JB |
309 | } |
310 | ||
311 | #ifdef SIGTSTP | |
312 | ||
64e971c3 RS |
313 | /* Arrange for character C to be read as the next input from |
314 | the terminal. */ | |
315 | ||
dfcf069d | 316 | void |
0c2338d8 DL |
317 | #ifdef PROTOTYPES |
318 | stuff_char (char c) | |
319 | #else | |
86a5659e JB |
320 | stuff_char (c) |
321 | char c; | |
0c2338d8 | 322 | #endif |
86a5659e | 323 | { |
23dab951 RS |
324 | if (read_socket_hook) |
325 | return; | |
326 | ||
86a5659e JB |
327 | /* Should perhaps error if in batch mode */ |
328 | #ifdef TIOCSTI | |
64e971c3 | 329 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 330 | #else /* no TIOCSTI */ |
71f06467 | 331 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
332 | #endif /* no TIOCSTI */ |
333 | } | |
334 | ||
335 | #endif /* SIGTSTP */ | |
64e971c3 | 336 | \f |
08633194 | 337 | void |
86a5659e JB |
338 | init_baud_rate () |
339 | { | |
86a5659e | 340 | if (noninteractive) |
5bdd7bdd | 341 | emacs_ospeed = 0; |
86a5659e JB |
342 | else |
343 | { | |
dfc366c9 RS |
344 | #ifdef INIT_BAUD_RATE |
345 | INIT_BAUD_RATE (); | |
346 | #else | |
fe03522b | 347 | #ifdef DOS_NT |
5bdd7bdd | 348 | emacs_ospeed = 15; |
fe03522b | 349 | #else /* not DOS_NT */ |
86a5659e | 350 | #ifdef VMS |
91bac16a JB |
351 | struct sensemode sg; |
352 | ||
353 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 354 | &sg.class, 12, 0, 0, 0, 0 ); |
5bdd7bdd | 355 | emacs_ospeed = sg.xmit_baud; |
91bac16a | 356 | #else /* not VMS */ |
e04a4e0d JB |
357 | #ifdef HAVE_TERMIOS |
358 | struct termios sg; | |
91bac16a | 359 | |
71f06467 | 360 | sg.c_cflag = B9600; |
64e971c3 | 361 | tcgetattr (input_fd, &sg); |
5bdd7bdd | 362 | emacs_ospeed = cfgetospeed (&sg); |
5baff9ce | 363 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b | 364 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
5bdd7bdd GM |
365 | if (emacs_ospeed == 0) |
366 | emacs_ospeed = getobaud (sg.c_cflag); | |
2f43149b | 367 | #endif |
e04a4e0d JB |
368 | #else /* neither VMS nor TERMIOS */ |
369 | #ifdef HAVE_TERMIO | |
370 | struct termio sg; | |
91bac16a | 371 | |
71f06467 | 372 | sg.c_cflag = B9600; |
e04a4e0d | 373 | #ifdef HAVE_TCATTR |
64e971c3 | 374 | tcgetattr (input_fd, &sg); |
e04a4e0d | 375 | #else |
6c65530f | 376 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 377 | #endif |
5bdd7bdd | 378 | emacs_ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 379 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a | 380 | struct sgttyb sg; |
177c0ea7 | 381 | |
91bac16a | 382 | sg.sg_ospeed = B9600; |
64e971c3 | 383 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 384 | abort (); |
5bdd7bdd | 385 | emacs_ospeed = sg.sg_ospeed; |
91bac16a | 386 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 387 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 388 | #endif /* not VMS */ |
fe03522b | 389 | #endif /* not DOS_NT */ |
dfc366c9 | 390 | #endif /* not INIT_BAUD_RATE */ |
86a5659e | 391 | } |
177c0ea7 | 392 | |
5bdd7bdd GM |
393 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
394 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
395 | if (baud_rate == 0) |
396 | baud_rate = 1200; | |
397 | } | |
398 | ||
399 | /*ARGSUSED*/ | |
dfcf069d | 400 | void |
86a5659e JB |
401 | set_exclusive_use (fd) |
402 | int fd; | |
403 | { | |
404 | #ifdef FIOCLEX | |
405 | ioctl (fd, FIOCLEX, 0); | |
406 | #endif | |
407 | /* Ok to do nothing if this feature does not exist */ | |
408 | } | |
64e971c3 | 409 | \f |
86a5659e JB |
410 | #ifndef subprocesses |
411 | ||
412 | wait_without_blocking () | |
413 | { | |
2a633456 | 414 | #ifdef BSD_SYSTEM |
86a5659e JB |
415 | wait3 (0, WNOHANG | WUNTRACED, 0); |
416 | #else | |
417 | croak ("wait_without_blocking"); | |
418 | #endif | |
419 | synch_process_alive = 0; | |
420 | } | |
421 | ||
422 | #endif /* not subprocesses */ | |
423 | ||
424 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 425 | (at least for bsd). */ |
86a5659e JB |
426 | |
427 | SIGTYPE | |
428 | wait_for_termination_signal () | |
429 | {} | |
430 | ||
431 | /* Wait for subprocess with process id `pid' to terminate and | |
432 | make sure it will get eliminated (not remain forever as a zombie) */ | |
433 | ||
08633194 | 434 | void |
86a5659e JB |
435 | wait_for_termination (pid) |
436 | int pid; | |
437 | { | |
438 | while (1) | |
439 | { | |
440 | #ifdef subprocesses | |
441 | #ifdef VMS | |
442 | int status; | |
443 | ||
986ffb24 | 444 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
445 | break; |
446 | #else /* not VMS */ | |
2a633456 | 447 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
448 | /* Note that kill returns -1 even if the process is just a zombie now. |
449 | But inevitably a SIGCHLD interrupt should be generated | |
450 | and child_sig will do wait3 and make the process go away. */ | |
451 | /* There is some indication that there is a bug involved with | |
452 | termination of subprocesses, perhaps involving a kernel bug too, | |
453 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
454 | if that causes the problem to go away or get worse. */ | |
455 | sigsetmask (sigmask (SIGCHLD)); | |
456 | if (0 > kill (pid, 0)) | |
fe03522b | 457 | { |
4c8975ad RS |
458 | sigsetmask (SIGEMPTYMASK); |
459 | kill (getpid (), SIGCHLD); | |
460 | break; | |
461 | } | |
462 | if (wait_debugging) | |
463 | sleep (1); | |
464 | else | |
465 | sigpause (SIGEMPTYMASK); | |
2a633456 | 466 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 467 | #if defined (UNIPLUS) |
4c8975ad RS |
468 | if (0 > kill (pid, 0)) |
469 | break; | |
470 | wait (0); | |
2a633456 | 471 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
8a2a6032 | 472 | #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */ |
9ab714c7 | 473 | sigblock (sigmask (SIGCHLD)); |
59957f85 GM |
474 | errno = 0; |
475 | if (kill (pid, 0) == -1 && errno == ESRCH) | |
9ab714c7 RS |
476 | { |
477 | sigunblock (sigmask (SIGCHLD)); | |
478 | break; | |
479 | } | |
ac3ac859 | 480 | |
0fdcb867 | 481 | sigsuspend (&empty_mask); |
9ab714c7 | 482 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
483 | #ifdef HAVE_SYSV_SIGPAUSE |
484 | sighold (SIGCHLD); | |
485 | if (0 > kill (pid, 0)) | |
486 | { | |
487 | sigrelse (SIGCHLD); | |
488 | break; | |
489 | } | |
490 | sigpause (SIGCHLD); | |
491 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
492 | #ifdef WINDOWSNT |
493 | wait (0); | |
494 | break; | |
495 | #else /* not WINDOWSNT */ | |
4c8975ad | 496 | if (0 > kill (pid, 0)) |
86a5659e | 497 | break; |
4c8975ad RS |
498 | /* Using sleep instead of pause avoids timing error. |
499 | If the inferior dies just before the sleep, | |
500 | we lose just one second. */ | |
501 | sleep (1); | |
fe03522b | 502 | #endif /* not WINDOWSNT */ |
4c8975ad | 503 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 504 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 505 | #endif /* not UNIPLUS */ |
2a633456 | 506 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
507 | #endif /* not VMS */ |
508 | #else /* not subprocesses */ | |
15614e61 RS |
509 | #if __DJGPP__ > 1 |
510 | break; | |
511 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
512 | #ifndef BSD4_1 |
513 | if (kill (pid, 0) < 0) | |
514 | break; | |
515 | wait (0); | |
516 | #else /* BSD4_1 */ | |
517 | int status; | |
518 | status = wait (0); | |
519 | if (status == pid || status == -1) | |
520 | break; | |
521 | #endif /* BSD4_1 */ | |
15614e61 | 522 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
523 | #endif /* not subprocesses */ |
524 | } | |
525 | } | |
526 | ||
527 | #ifdef subprocesses | |
528 | ||
529 | /* | |
530 | * flush any pending output | |
531 | * (may flush input as well; it does not matter the way we use it) | |
532 | */ | |
177c0ea7 | 533 | |
08633194 | 534 | void |
86a5659e JB |
535 | flush_pending_output (channel) |
536 | int channel; | |
537 | { | |
538 | #ifdef HAVE_TERMIOS | |
539 | /* If we try this, we get hit with SIGTTIN, because | |
540 | the child's tty belongs to the child's pgrp. */ | |
541 | #else | |
542 | #ifdef TCFLSH | |
543 | ioctl (channel, TCFLSH, 1); | |
544 | #else | |
545 | #ifdef TIOCFLUSH | |
546 | int zero = 0; | |
547 | /* 3rd arg should be ignored | |
548 | but some 4.2 kernels actually want the address of an int | |
549 | and nonzero means something different. */ | |
550 | ioctl (channel, TIOCFLUSH, &zero); | |
551 | #endif | |
552 | #endif | |
553 | #endif | |
554 | } | |
64e971c3 | 555 | \f |
86a5659e JB |
556 | #ifndef VMS |
557 | /* Set up the terminal at the other end of a pseudo-terminal that | |
558 | we will be controlling an inferior through. | |
559 | It should not echo or do line-editing, since that is done | |
560 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
561 | ||
08633194 | 562 | void |
86a5659e JB |
563 | child_setup_tty (out) |
564 | int out; | |
565 | { | |
fe03522b | 566 | #ifndef DOS_NT |
91bac16a JB |
567 | struct emacs_tty s; |
568 | ||
569 | EMACS_GET_TTY (out, &s); | |
86a5659e | 570 | |
31be8d24 | 571 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
572 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
573 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 574 | #ifdef NLDLY |
91bac16a JB |
575 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
576 | /* No output delays */ | |
9d4e5eea | 577 | #endif |
91bac16a JB |
578 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
579 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
2ea99a1e | 580 | #if 0 /* This causes bugs in (for instance) telnet to certain sites. */ |
402c9a51 GM |
581 | s.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ |
582 | #ifdef INLCR /* Just being cautious, since I can't check how | |
583 | widespread INLCR is--rms. */ | |
584 | s.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
585 | #endif | |
5a04bfa9 | 586 | #endif |
9d4e5eea RS |
587 | #ifdef IUCLC |
588 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
589 | #endif | |
f7097b2a RS |
590 | #ifdef ISTRIP |
591 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
592 | #endif | |
23e4c8be | 593 | #ifdef OLCUC |
9d4e5eea RS |
594 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
595 | #endif | |
f7097b2a | 596 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 597 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 598 | #if 0 |
eb8c3be9 | 599 | /* Said to be unnecessary: */ |
91bac16a JB |
600 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
601 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
602 | #endif | |
603 | ||
604 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
605 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
606 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
607 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 608 | |
86a5659e | 609 | #ifdef HPUX |
91bac16a | 610 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 611 | #endif /* HPUX */ |
91bac16a | 612 | |
dfe598b5 RS |
613 | #ifdef SIGNALS_VIA_CHARACTERS |
614 | /* the QUIT and INTR character are used in process_send_signal | |
615 | so set them here to something useful. */ | |
fa51fa32 | 616 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 617 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 618 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
619 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
620 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
621 | ||
86a5659e JB |
622 | #ifdef AIX |
623 | /* AIX enhanced edit loses NULs, so disable it */ | |
624 | #ifndef IBMR2AIX | |
91bac16a JB |
625 | s.main.c_line = 0; |
626 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
627 | #endif |
628 | /* Also, PTY overloads NUL and BREAK. | |
629 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
630 | s.main.c_iflag &= ~IGNBRK; |
631 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
632 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
633 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
634 | would force it to 0377. That looks like duplicated code. */ | |
635 | #ifndef SIGNALS_VIA_CHARACTERS | |
e6cc3307 | 636 | /* QUIT and INTR work better as signals, so disable character forms */ |
fa51fa32 KS |
637 | s.main.c_cc[VQUIT] = CDISABLE; |
638 | s.main.c_cc[VINTR] = CDISABLE; | |
91bac16a | 639 | s.main.c_lflag &= ~ISIG; |
e6cc3307 | 640 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
fa51fa32 | 641 | s.main.c_cc[VEOL] = CDISABLE; |
91bac16a | 642 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
643 | #endif /* AIX */ |
644 | ||
645 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
646 | |
647 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
648 | | CBREAK | TANDEM); | |
a00d5589 | 649 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
650 | s.main.sg_erase = 0377; |
651 | s.main.sg_kill = 0377; | |
1bf96fb5 | 652 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 653 | |
86a5659e JB |
654 | #endif /* not HAVE_TERMIO */ |
655 | ||
91bac16a | 656 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
657 | |
658 | #ifdef BSD4_1 | |
659 | if (interrupt_input) | |
660 | reset_sigio (); | |
661 | #endif /* BSD4_1 */ | |
662 | #ifdef RTU | |
663 | { | |
664 | int zero = 0; | |
665 | ioctl (out, FIOASYNC, &zero); | |
666 | } | |
667 | #endif /* RTU */ | |
fe03522b | 668 | #endif /* not DOS_NT */ |
86a5659e JB |
669 | } |
670 | #endif /* not VMS */ | |
671 | ||
672 | #endif /* subprocesses */ | |
64e971c3 | 673 | \f |
86a5659e JB |
674 | /* Record a signal code and the handler for it. */ |
675 | struct save_signal | |
676 | { | |
677 | int code; | |
35a05cca | 678 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
679 | }; |
680 | ||
35a05cca AS |
681 | static void save_signal_handlers P_ ((struct save_signal *)); |
682 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
683 | ||
86a5659e JB |
684 | /* Suspend the Emacs process; give terminal to its superior. */ |
685 | ||
08633194 | 686 | void |
86a5659e JB |
687 | sys_suspend () |
688 | { | |
689 | #ifdef VMS | |
88191e36 RS |
690 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
691 | to the current emacs as a cheaper than starting a whole new process. This | |
692 | is set up by KEPTEDITOR.COM. */ | |
693 | unsigned long parent_id, foster_parent_id; | |
694 | char *fpid_string; | |
695 | ||
696 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
697 | if (fpid_string != NULL) | |
698 | { | |
699 | sscanf (fpid_string, "%x", &foster_parent_id); | |
700 | if (foster_parent_id != 0) | |
701 | parent_id = foster_parent_id; | |
702 | else | |
703 | parent_id = getppid (); | |
704 | } | |
705 | else | |
706 | parent_id = getppid (); | |
707 | ||
9ac0d9e0 | 708 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 709 | |
86a5659e JB |
710 | if (parent_id && parent_id != 0xffffffff) |
711 | { | |
712 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
713 | int status = LIB$ATTACH (&parent_id) & 1; | |
714 | signal (SIGINT, oldsig); | |
715 | return status; | |
716 | } | |
717 | else | |
718 | { | |
719 | struct { | |
720 | int l; | |
721 | char *a; | |
722 | } d_prompt; | |
723 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
724 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 725 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
726 | return 1; |
727 | } | |
728 | return -1; | |
729 | #else | |
c4ea52a6 | 730 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 731 | |
5a570e37 | 732 | { |
e89a2cd5 | 733 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
734 | EMACS_KILLPG (pgrp, SIGTSTP); |
735 | } | |
86a5659e JB |
736 | |
737 | #else /* No SIGTSTP */ | |
738 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
739 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
740 | kill (getpid (), SIGQUIT); | |
741 | ||
742 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
743 | ||
744 | /* On a system where suspending is not implemented, | |
745 | instead fork a subshell and let it talk directly to the terminal | |
746 | while we wait. */ | |
a0932daa KH |
747 | sys_subshell (); |
748 | ||
749 | #endif /* no USG_JOBCTRL */ | |
750 | #endif /* no SIGTSTP */ | |
751 | #endif /* not VMS */ | |
752 | } | |
753 | ||
754 | /* Fork a subshell. */ | |
755 | ||
e0f712ba | 756 | #ifndef MAC_OS8 |
08633194 | 757 | void |
a0932daa KH |
758 | sys_subshell () |
759 | { | |
760 | #ifndef VMS | |
ad00c243 | 761 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
762 | int st; |
763 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
764 | #endif | |
efa04277 | 765 | int pid; |
86a5659e | 766 | struct save_signal saved_handlers[5]; |
efa04277 RS |
767 | Lisp_Object dir; |
768 | unsigned char *str = 0; | |
769 | int len; | |
86a5659e JB |
770 | |
771 | saved_handlers[0].code = SIGINT; | |
772 | saved_handlers[1].code = SIGQUIT; | |
773 | saved_handlers[2].code = SIGTERM; | |
774 | #ifdef SIGIO | |
775 | saved_handlers[3].code = SIGIO; | |
776 | saved_handlers[4].code = 0; | |
777 | #else | |
778 | saved_handlers[3].code = 0; | |
779 | #endif | |
780 | ||
efa04277 RS |
781 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
782 | which somehow wedges the hp compiler. So instead... */ | |
783 | ||
784 | dir = intern ("default-directory"); | |
0e7e7a58 | 785 | if (NILP (Fboundp (dir))) |
efa04277 RS |
786 | goto xyzzy; |
787 | dir = Fsymbol_value (dir); | |
914e81a2 | 788 | if (!STRINGP (dir)) |
efa04277 RS |
789 | goto xyzzy; |
790 | ||
791 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
d5db4077 KR |
792 | str = (unsigned char *) alloca (SCHARS (dir) + 2); |
793 | len = SCHARS (dir); | |
794 | bcopy (SDATA (dir), str, len); | |
efa04277 RS |
795 | if (str[len - 1] != '/') str[len++] = '/'; |
796 | str[len] = 0; | |
797 | xyzzy: | |
798 | ||
ad00c243 | 799 | #ifdef DOS_NT |
7964ba9e | 800 | pid = 0; |
718ca3cf RS |
801 | #if __DJGPP__ > 1 |
802 | save_signal_handlers (saved_handlers); | |
803 | synch_process_alive = 1; | |
804 | #endif /* __DJGPP__ > 1 */ | |
177c0ea7 | 805 | #else |
efa04277 | 806 | pid = vfork (); |
86a5659e JB |
807 | if (pid == -1) |
808 | error ("Can't spawn subshell"); | |
7964ba9e RS |
809 | #endif |
810 | ||
86a5659e JB |
811 | if (pid == 0) |
812 | { | |
7964ba9e | 813 | char *sh = 0; |
86a5659e | 814 | |
ad00c243 | 815 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 816 | getwd (oldwd); |
7964ba9e RS |
817 | if (sh == 0) |
818 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 819 | #endif |
7964ba9e RS |
820 | if (sh == 0) |
821 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
822 | if (sh == 0) |
823 | sh = "sh"; | |
207bdbdb | 824 | |
86a5659e | 825 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 826 | if (str) |
074c438c | 827 | chdir ((char *) str); |
efa04277 | 828 | |
86a5659e JB |
829 | #ifdef subprocesses |
830 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
831 | #endif | |
1593c2fe | 832 | |
6f8b4d01 | 833 | #ifdef SET_EMACS_PRIORITY |
1593c2fe | 834 | { |
31ade731 | 835 | extern EMACS_INT emacs_priority; |
1593c2fe | 836 | |
6f8b4d01 | 837 | if (emacs_priority < 0) |
1593c2fe JB |
838 | nice (-emacs_priority); |
839 | } | |
840 | #endif | |
841 | ||
fe03522b | 842 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 843 | { |
48178f9a EZ |
844 | char *epwd = getenv ("PWD"); |
845 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
846 | |
847 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 848 | if (epwd) |
c0917202 | 849 | { |
48178f9a | 850 | strcpy (old_pwd, epwd); |
c0917202 EZ |
851 | if (str[len - 1] == '/') |
852 | str[len - 1] = '\0'; | |
853 | setenv ("PWD", str, 1); | |
854 | } | |
855 | st = system (sh); | |
856 | chdir (oldwd); | |
48178f9a | 857 | if (epwd) |
c0917202 EZ |
858 | putenv (old_pwd); /* restore previous value */ |
859 | } | |
7964ba9e | 860 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 861 | if (st) |
fe03522b | 862 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 863 | #endif |
207bdbdb | 864 | #else /* not MSDOS */ |
fe03522b | 865 | #ifdef WINDOWSNT |
fe03522b RS |
866 | /* Waits for process completion */ |
867 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 868 | chdir (oldwd); |
fe03522b RS |
869 | if (pid == -1) |
870 | write (1, "Can't execute subshell", 22); | |
fe03522b | 871 | #else /* not WINDOWSNT */ |
86a5659e JB |
872 | execlp (sh, sh, 0); |
873 | write (1, "Can't execute subshell", 22); | |
874 | _exit (1); | |
fe03522b | 875 | #endif /* not WINDOWSNT */ |
207bdbdb | 876 | #endif /* not MSDOS */ |
86a5659e JB |
877 | } |
878 | ||
718ca3cf RS |
879 | /* Do this now if we did not do it before. */ |
880 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 881 | save_signal_handlers (saved_handlers); |
ffafc793 | 882 | synch_process_alive = 1; |
718ca3cf RS |
883 | #endif |
884 | ||
ad00c243 | 885 | #ifndef DOS_NT |
86a5659e | 886 | wait_for_termination (pid); |
7964ba9e | 887 | #endif |
86a5659e | 888 | restore_signal_handlers (saved_handlers); |
718ca3cf | 889 | synch_process_alive = 0; |
a0932daa | 890 | #endif /* !VMS */ |
86a5659e | 891 | } |
e0f712ba | 892 | #endif /* !MAC_OS8 */ |
86a5659e | 893 | |
35a05cca | 894 | static void |
86a5659e JB |
895 | save_signal_handlers (saved_handlers) |
896 | struct save_signal *saved_handlers; | |
897 | { | |
898 | while (saved_handlers->code) | |
899 | { | |
508b171c | 900 | saved_handlers->handler |
35a05cca | 901 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
902 | saved_handlers++; |
903 | } | |
904 | } | |
905 | ||
35a05cca | 906 | static void |
86a5659e JB |
907 | restore_signal_handlers (saved_handlers) |
908 | struct save_signal *saved_handlers; | |
909 | { | |
910 | while (saved_handlers->code) | |
911 | { | |
912 | signal (saved_handlers->code, saved_handlers->handler); | |
913 | saved_handlers++; | |
914 | } | |
915 | } | |
916 | \f | |
917 | #ifdef F_SETFL | |
918 | ||
919 | int old_fcntl_flags; | |
920 | ||
08633194 | 921 | void |
23dab951 RS |
922 | init_sigio (fd) |
923 | int fd; | |
86a5659e JB |
924 | { |
925 | #ifdef FASYNC | |
23dab951 RS |
926 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
927 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 928 | #endif |
23dab951 | 929 | interrupts_deferred = 0; |
86a5659e JB |
930 | } |
931 | ||
590034f9 | 932 | void |
86a5659e JB |
933 | reset_sigio () |
934 | { | |
935 | unrequest_sigio (); | |
936 | } | |
937 | ||
eb8c3be9 | 938 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e | 939 | |
08633194 | 940 | void |
86a5659e JB |
941 | request_sigio () |
942 | { | |
23dab951 RS |
943 | if (read_socket_hook) |
944 | return; | |
945 | ||
86a5659e | 946 | #ifdef SIGWINCH |
e065a56e | 947 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 948 | #endif |
64e971c3 | 949 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
950 | |
951 | interrupts_deferred = 0; | |
952 | } | |
953 | ||
08633194 | 954 | void |
86a5659e JB |
955 | unrequest_sigio () |
956 | { | |
23dab951 RS |
957 | if (read_socket_hook) |
958 | return; | |
959 | ||
86a5659e | 960 | #ifdef SIGWINCH |
e065a56e | 961 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 962 | #endif |
64e971c3 | 963 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
964 | interrupts_deferred = 1; |
965 | } | |
966 | ||
967 | #else /* no FASYNC */ | |
968 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
969 | ||
08633194 | 970 | void |
86a5659e JB |
971 | request_sigio () |
972 | { | |
973 | int on = 1; | |
23dab951 RS |
974 | |
975 | if (read_socket_hook) | |
976 | return; | |
977 | ||
64e971c3 | 978 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
979 | interrupts_deferred = 0; |
980 | } | |
981 | ||
08633194 | 982 | void |
86a5659e JB |
983 | unrequest_sigio () |
984 | { | |
985 | int off = 0; | |
986 | ||
23dab951 RS |
987 | if (read_socket_hook) |
988 | return; | |
989 | ||
64e971c3 | 990 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
991 | interrupts_deferred = 1; |
992 | } | |
993 | ||
994 | #else /* not FASYNC, not STRIDE */ | |
177c0ea7 | 995 | |
25ab68af RS |
996 | #ifdef _CX_UX |
997 | ||
998 | #include <termios.h> | |
999 | ||
08633194 | 1000 | void |
25ab68af RS |
1001 | request_sigio () |
1002 | { | |
1003 | int on = 1; | |
1004 | sigset_t st; | |
1005 | ||
23dab951 RS |
1006 | if (read_socket_hook) |
1007 | return; | |
1008 | ||
c4ea52a6 RS |
1009 | sigemptyset (&st); |
1010 | sigaddset (&st, SIGIO); | |
25ab68af RS |
1011 | ioctl (input_fd, FIOASYNC, &on); |
1012 | interrupts_deferred = 0; | |
c4ea52a6 | 1013 | sigprocmask (SIG_UNBLOCK, &st, (sigset_t *)0); |
25ab68af RS |
1014 | } |
1015 | ||
08633194 | 1016 | void |
25ab68af RS |
1017 | unrequest_sigio () |
1018 | { | |
1019 | int off = 0; | |
1020 | ||
23dab951 RS |
1021 | if (read_socket_hook) |
1022 | return; | |
1023 | ||
25ab68af RS |
1024 | ioctl (input_fd, FIOASYNC, &off); |
1025 | interrupts_deferred = 1; | |
1026 | } | |
1027 | ||
1028 | #else /* ! _CX_UX */ | |
feb67dfe | 1029 | #ifndef MSDOS |
25ab68af | 1030 | |
08633194 | 1031 | void |
86a5659e JB |
1032 | request_sigio () |
1033 | { | |
23dab951 RS |
1034 | if (read_socket_hook) |
1035 | return; | |
1036 | ||
86a5659e JB |
1037 | croak ("request_sigio"); |
1038 | } | |
177c0ea7 | 1039 | |
08633194 | 1040 | void |
86a5659e JB |
1041 | unrequest_sigio () |
1042 | { | |
23dab951 RS |
1043 | if (read_socket_hook) |
1044 | return; | |
1045 | ||
86a5659e JB |
1046 | croak ("unrequest_sigio"); |
1047 | } | |
feb67dfe EZ |
1048 | |
1049 | #endif /* MSDOS */ | |
25ab68af | 1050 | #endif /* _CX_UX */ |
86a5659e JB |
1051 | #endif /* STRIDE */ |
1052 | #endif /* FASYNC */ | |
1053 | #endif /* F_SETFL */ | |
1054 | \f | |
9ae8f997 JB |
1055 | /* Saving and restoring the process group of Emacs's terminal. */ |
1056 | ||
0ba73609 | 1057 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1058 | |
1059 | /* The process group of which Emacs was a member when it initially | |
1060 | started. | |
1061 | ||
1062 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1063 | getpid ()), then we know we're running under a shell with job | |
1064 | control (Emacs would never be run as part of a pipeline). | |
1065 | Everything is fine. | |
1066 | ||
1067 | If Emacs was not in its own process group, then we know we're | |
1068 | running under a shell (or a caller) that doesn't know how to | |
1069 | separate itself from Emacs (like sh). Emacs must be in its own | |
1070 | process group in order to receive SIGIO correctly. In this | |
1071 | situation, we put ourselves in our own pgroup, forcibly set the | |
1072 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1073 | the tty's pgroup just like any other terminal setting. If | |
1074 | inherited_group was not the tty's pgroup, then we'll get a | |
1075 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
1076 | it goes foreground in the future, which is what should happen. */ | |
1077 | int inherited_pgroup; | |
1078 | ||
1079 | /* Split off the foreground process group to Emacs alone. | |
1080 | When we are in the foreground, but not started in our own process | |
1081 | group, redirect the TTY to point to our own process group. We need | |
1082 | to be in our own process group to receive SIGIO properly. */ | |
dfcf069d | 1083 | void |
9ae8f997 JB |
1084 | narrow_foreground_group () |
1085 | { | |
1086 | int me = getpid (); | |
1087 | ||
1088 | setpgrp (0, inherited_pgroup); | |
1089 | if (inherited_pgroup != me) | |
64e971c3 | 1090 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
1091 | setpgrp (0, me); |
1092 | } | |
1093 | ||
1094 | /* Set the tty to our original foreground group. */ | |
dfcf069d | 1095 | void |
9ae8f997 JB |
1096 | widen_foreground_group () |
1097 | { | |
1098 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 1099 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
1100 | setpgrp (0, inherited_pgroup); |
1101 | } | |
1102 | ||
0ba73609 | 1103 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1104 | \f |
68936329 JB |
1105 | /* Getting and setting emacs_tty structures. */ |
1106 | ||
1107 | /* Set *TC to the parameters associated with the terminal FD. | |
1108 | Return zero if all's well, or -1 if we ran into an error we | |
1109 | couldn't deal with. */ | |
1110 | int | |
1111 | emacs_get_tty (fd, settings) | |
1112 | int fd; | |
1113 | struct emacs_tty *settings; | |
1114 | { | |
1115 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1116 | #ifdef HAVE_TCATTR | |
1117 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1d9f9f9e | 1118 | bzero (&settings->main, sizeof (settings->main)); |
68936329 JB |
1119 | if (tcgetattr (fd, &settings->main) < 0) |
1120 | return -1; | |
1121 | ||
1122 | #else | |
1123 | #ifdef HAVE_TERMIO | |
1124 | /* The SYSV-style interface? */ | |
1125 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1126 | return -1; | |
1127 | ||
1128 | #else | |
1129 | #ifdef VMS | |
1130 | /* Vehemently Monstrous System? :-) */ | |
1131 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1132 | &settings->main.class, 12, 0, 0, 0, 0) | |
1133 | & 1)) | |
1134 | return -1; | |
1135 | ||
1136 | #else | |
fe03522b | 1137 | #ifndef DOS_NT |
68936329 JB |
1138 | /* I give up - I hope you have the BSD ioctls. */ |
1139 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1140 | return -1; | |
fe03522b | 1141 | #endif /* not DOS_NT */ |
68936329 JB |
1142 | #endif |
1143 | #endif | |
1144 | #endif | |
1145 | ||
1146 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1147 | #ifdef HAVE_LTCHARS |
68936329 JB |
1148 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1149 | return -1; | |
1150 | #endif | |
1151 | ||
1152 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1153 | #ifdef HAVE_TCHARS |
68936329 JB |
1154 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1155 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1156 | return -1; | |
1157 | #endif | |
1158 | ||
1159 | /* We have survived the tempest. */ | |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | ||
1164 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1165 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1166 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1167 | |
68936329 | 1168 | int |
394049ec | 1169 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1170 | int fd; |
1171 | struct emacs_tty *settings; | |
394049ec | 1172 | int flushp; |
68936329 JB |
1173 | { |
1174 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1175 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1176 | int i; |
68936329 JB |
1177 | /* We have those nifty POSIX tcmumbleattr functions. |
1178 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 1179 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
1180 | able to perform any of the requested actions, even if some |
1181 | of the requested actions could not be performed. | |
1182 | We must read settings back to ensure tty setup properly. | |
1183 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1184 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1185 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1186 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1187 | { |
1188 | if (errno == EINTR) | |
1189 | continue; | |
1190 | else | |
1191 | return -1; | |
1192 | } | |
1193 | else | |
1194 | { | |
1195 | struct termios new; | |
1196 | ||
1d9f9f9e | 1197 | bzero (&new, sizeof (new)); |
68936329 JB |
1198 | /* Get the current settings, and see if they're what we asked for. */ |
1199 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1200 | /* We cannot use memcmp on the whole structure here because under |
1201 | * aix386 the termios structure has some reserved field that may | |
1202 | * not be filled in. | |
1203 | */ | |
1204 | if ( new.c_iflag == settings->main.c_iflag | |
1205 | && new.c_oflag == settings->main.c_oflag | |
1206 | && new.c_cflag == settings->main.c_cflag | |
1207 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 1208 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 1209 | break; |
e6cc3307 RS |
1210 | else |
1211 | continue; | |
68936329 JB |
1212 | } |
1213 | ||
1214 | #else | |
1215 | #ifdef HAVE_TERMIO | |
1216 | /* The SYSV-style interface? */ | |
394049ec | 1217 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1218 | return -1; |
1219 | ||
1220 | #else | |
1221 | #ifdef VMS | |
1222 | /* Vehemently Monstrous System? :-) */ | |
1223 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1224 | &settings->main.class, 12, 0, 0, 0, 0) | |
1225 | & 1)) | |
1226 | return -1; | |
1227 | ||
1228 | #else | |
fe03522b | 1229 | #ifndef DOS_NT |
68936329 | 1230 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1231 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1232 | return -1; |
fe03522b | 1233 | #endif /* not DOS_NT */ |
68936329 JB |
1234 | |
1235 | #endif | |
1236 | #endif | |
1237 | #endif | |
1238 | ||
1239 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1240 | #ifdef HAVE_LTCHARS |
68936329 JB |
1241 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1242 | return -1; | |
1243 | #endif | |
1244 | ||
1245 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1246 | #ifdef HAVE_TCHARS |
68936329 JB |
1247 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1248 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1249 | return -1; | |
1250 | #endif | |
177c0ea7 | 1251 | |
68936329 JB |
1252 | /* We have survived the tempest. */ |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | \f | |
91bac16a JB |
1257 | /* The initial tty mode bits */ |
1258 | struct emacs_tty old_tty; | |
86a5659e | 1259 | |
7e32a4fb KH |
1260 | /* 1 if we have been through init_sys_modes. */ |
1261 | int term_initted; | |
1262 | ||
1263 | /* 1 if outer tty status has been recorded. */ | |
1264 | int old_tty_valid; | |
86a5659e | 1265 | |
91bac16a JB |
1266 | #ifdef BSD4_1 |
1267 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1268 | sigio. */ | |
1269 | int lmode; | |
1270 | #endif | |
1271 | ||
46f2fdac | 1272 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1273 | #ifdef F_SETOWN |
1274 | int old_fcntl_owner; | |
1275 | #endif /* F_SETOWN */ | |
46f2fdac | 1276 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1277 | |
86a5659e JB |
1278 | /* This may also be defined in stdio, |
1279 | but if so, this does no harm, | |
1280 | and using the same name avoids wasting the other one's space. */ | |
1281 | ||
6a0d0ed3 KH |
1282 | #ifdef nec_ews_svr4 |
1283 | extern char *_sobuf ; | |
1284 | #else | |
86a5659e JB |
1285 | #if defined (USG) || defined (DGUX) |
1286 | unsigned char _sobuf[BUFSIZ+8]; | |
1287 | #else | |
1288 | char _sobuf[BUFSIZ]; | |
1289 | #endif | |
6a0d0ed3 | 1290 | #endif |
177c0ea7 | 1291 | |
50b8cf60 | 1292 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1293 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1294 | #endif | |
50b8cf60 | 1295 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1296 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
177c0ea7 | 1297 | #endif |
86a5659e | 1298 | |
08633194 | 1299 | void |
86a5659e JB |
1300 | init_sys_modes () |
1301 | { | |
91bac16a JB |
1302 | struct emacs_tty tty; |
1303 | ||
e0f712ba | 1304 | #ifdef MAC_OS8 |
1a578e9b | 1305 | /* cus-start.el complains if delete-exited-processes is not defined */ |
c4ea52a6 RS |
1306 | #ifndef subprocesses |
1307 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
dfe45eff PJ |
1308 | doc: /* *Non-nil means delete processes immediately when they exit. |
1309 | nil means don't delete them until `list-processes' is run. */); | |
c4ea52a6 RS |
1310 | delete_exited_processes = 0; |
1311 | #endif | |
e0f712ba | 1312 | #endif /* MAC_OS8 */ |
c4ea52a6 | 1313 | |
86a5659e JB |
1314 | #ifdef VMS |
1315 | #if 0 | |
1316 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1317 | extern int (*interrupt_signal) (); | |
1318 | #endif | |
1319 | #endif | |
1320 | ||
4ec5cb58 RS |
1321 | Vtty_erase_char = Qnil; |
1322 | ||
86a5659e JB |
1323 | if (noninteractive) |
1324 | return; | |
1325 | ||
1326 | #ifdef VMS | |
1327 | if (!input_ef) | |
1328 | input_ef = get_kbd_event_flag (); | |
1329 | /* LIB$GET_EF (&input_ef); */ | |
1330 | SYS$CLREF (input_ef); | |
1331 | waiting_for_ast = 0; | |
1332 | if (!timer_ef) | |
1333 | timer_ef = get_timer_event_flag (); | |
1334 | /* LIB$GET_EF (&timer_ef); */ | |
1335 | SYS$CLREF (timer_ef); | |
210b2b4f | 1336 | #if 0 |
86a5659e JB |
1337 | if (!process_ef) |
1338 | { | |
1339 | LIB$GET_EF (&process_ef); | |
1340 | SYS$CLREF (process_ef); | |
1341 | } | |
1342 | if (input_ef / 32 != process_ef / 32) | |
1343 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1344 | #endif |
86a5659e | 1345 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1346 | croak ("Input and timer event flags in different clusters."); |
1347 | #if 0 | |
86a5659e JB |
1348 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1349 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1350 | #endif |
86a5659e JB |
1351 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1352 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1353 | #ifndef VMS4_4 |
1354 | sys_access_reinit (); | |
1355 | #endif | |
86a5659e | 1356 | #endif /* not VMS */ |
91bac16a | 1357 | |
0ba73609 | 1358 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1359 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1360 | narrow_foreground_group (); | |
1361 | #endif | |
1362 | ||
23cafe43 | 1363 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1364 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1365 | needs the initialization code below. */ | |
86a5659e | 1366 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1367 | #endif |
86a5659e | 1368 | { |
23dab951 RS |
1369 | EMACS_GET_TTY (input_fd, &old_tty); |
1370 | ||
7e32a4fb KH |
1371 | old_tty_valid = 1; |
1372 | ||
91bac16a | 1373 | tty = old_tty; |
86a5659e | 1374 | |
31be8d24 | 1375 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2e34157c | 1376 | XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); |
4ec5cb58 | 1377 | |
421dd92f RS |
1378 | #ifdef DGUX |
1379 | /* This allows meta to be sent on 8th bit. */ | |
1380 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1381 | #endif | |
91bac16a JB |
1382 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1383 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1384 | #ifdef INLCR /* I'm just being cautious, |
1385 | since I can't check how widespread INLCR is--rms. */ | |
1386 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
1387 | #endif | |
86a5659e | 1388 | #ifdef ISTRIP |
91bac16a | 1389 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1390 | #endif |
91bac16a JB |
1391 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1392 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1393 | #ifdef IEXTEN |
b26bc18b | 1394 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1395 | #endif |
91bac16a | 1396 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1397 | if (flow_control) |
1398 | { | |
91bac16a | 1399 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1400 | #ifdef IXANY |
91bac16a | 1401 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1402 | #endif /* IXANY */ |
1403 | } | |
1404 | else | |
91bac16a | 1405 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
177c0ea7 | 1406 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL |
91bac16a JB |
1407 | on output */ |
1408 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1409 | #ifdef CS8 |
1410 | if (meta_key) | |
1411 | { | |
91bac16a JB |
1412 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1413 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1414 | } |
1415 | #endif | |
91bac16a | 1416 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1417 | /* Set up C-g for both SIGQUIT and SIGINT. |
1418 | We don't know which we will get, but we handle both alike | |
1419 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1420 | tty.main.c_cc[VQUIT] = quit_char; |
1421 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1422 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1423 | #ifdef VSWTCH |
e2b40c23 | 1424 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1425 | of C-z */ |
86a5659e | 1426 | #endif /* VSWTCH */ |
c179a6d1 | 1427 | |
86a5659e | 1428 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1429 | #ifdef VSUSP |
e2b40c23 | 1430 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1431 | #endif /* VSUSP */ |
1432 | #ifdef V_DSUSP | |
e2b40c23 | 1433 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1434 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1435 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1436 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1437 | #endif /* VDSUSP */ | |
92c995de RS |
1438 | #ifdef VLNEXT |
1439 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1440 | #endif /* VLNEXT */ | |
1441 | #ifdef VREPRINT | |
1442 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1443 | #endif /* VREPRINT */ | |
1444 | #ifdef VWERASE | |
1445 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1446 | #endif /* VWERASE */ | |
1447 | #ifdef VDISCARD | |
1448 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1449 | #endif /* VDISCARD */ | |
c179a6d1 RS |
1450 | |
1451 | if (flow_control) | |
1452 | { | |
421dd92f | 1453 | #ifdef VSTART |
c179a6d1 | 1454 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1455 | #endif /* VSTART */ |
1456 | #ifdef VSTOP | |
c179a6d1 | 1457 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1458 | #endif /* VSTOP */ |
c179a6d1 RS |
1459 | } |
1460 | else | |
1461 | { | |
1462 | #ifdef VSTART | |
1463 | tty.main.c_cc[VSTART] = CDISABLE; | |
1464 | #endif /* VSTART */ | |
1465 | #ifdef VSTOP | |
1466 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1467 | #endif /* VSTOP */ | |
1468 | } | |
86a5659e | 1469 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1470 | |
441f6399 | 1471 | #ifdef SET_LINE_DISCIPLINE |
ea5a0917 | 1472 | /* Need to explicitly request TERMIODISC line discipline or |
441f6399 RS |
1473 | Ultrix's termios does not work correctly. */ |
1474 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1475 | #endif | |
86a5659e JB |
1476 | #ifdef AIX |
1477 | #ifndef IBMR2AIX | |
441f6399 | 1478 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1479 | tty.main.c_line = 0; |
1480 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1481 | #else |
fa51fa32 KS |
1482 | tty.main.c_cc[VSTRT] = CDISABLE; |
1483 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1484 | tty.main.c_cc[VSUSP] = CDISABLE; | |
1485 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
86a5659e | 1486 | #endif /* IBMR2AIX */ |
ac567c95 RS |
1487 | if (flow_control) |
1488 | { | |
1489 | #ifdef VSTART | |
1490 | tty.main.c_cc[VSTART] = '\021'; | |
1491 | #endif /* VSTART */ | |
1492 | #ifdef VSTOP | |
1493 | tty.main.c_cc[VSTOP] = '\023'; | |
1494 | #endif /* VSTOP */ | |
1495 | } | |
86a5659e JB |
1496 | /* Also, PTY overloads NUL and BREAK. |
1497 | don't ignore break, but don't signal either, so it looks like NUL. | |
1498 | This really serves a purpose only if running in an XTERM window | |
1499 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1500 | tty.main.c_iflag &= ~IGNBRK; |
1501 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1502 | #endif |
1503 | #else /* if not HAVE_TERMIO */ | |
1504 | #ifdef VMS | |
91bac16a | 1505 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1506 | if (meta_key) |
986ffb24 | 1507 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1508 | if (flow_control) |
91bac16a | 1509 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1510 | else |
91bac16a JB |
1511 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1512 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1513 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1514 | #ifndef DOS_NT |
a61e51f0 | 1515 | XSETINT (Vtty_erase_char, tty.main.sg_erase); |
91bac16a | 1516 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1517 | if (meta_key) |
91bac16a JB |
1518 | tty.main.sg_flags |= ANYP; |
1519 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1520 | #endif /* not DOS_NT */ |
86a5659e JB |
1521 | #endif /* not VMS (BSD, that is) */ |
1522 | #endif /* not HAVE_TERMIO */ | |
1523 | ||
91bac16a JB |
1524 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1525 | and turn off start and stop chars, etc. If not going to use | |
1526 | CBREAK mode, do this anyway so as to turn off local flow | |
1527 | control for user coming over network on 4.2; in this case, | |
1528 | only t_stopc and t_startc really matter. */ | |
1529 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1530 | #ifdef HAVE_TCHARS |
91bac16a JB |
1531 | /* Note: if not using CBREAK mode, it makes no difference how we |
1532 | set this */ | |
1533 | tty.tchars = new_tchars; | |
1534 | tty.tchars.t_intrc = quit_char; | |
1535 | if (flow_control) | |
1536 | { | |
1537 | tty.tchars.t_startc = '\021'; | |
1538 | tty.tchars.t_stopc = '\023'; | |
1539 | } | |
1540 | ||
91bac16a | 1541 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1542 | #ifdef ultrix |
1543 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1544 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1545 | tty.lmode &= ~LLITOUT; | |
1546 | #endif | |
177c0ea7 | 1547 | |
91bac16a JB |
1548 | #ifdef BSD4_1 |
1549 | lmode = tty.lmode; | |
1550 | #endif | |
1551 | ||
50b8cf60 | 1552 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1553 | #endif /* not HAVE_TERMIO */ |
1554 | ||
50b8cf60 | 1555 | #ifdef HAVE_LTCHARS |
91bac16a | 1556 | tty.ltchars = new_ltchars; |
50b8cf60 | 1557 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1558 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1559 | if (!term_initted) |
1560 | internal_terminal_init (); | |
207bdbdb RS |
1561 | dos_ttraw (); |
1562 | #endif | |
91bac16a JB |
1563 | |
1564 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1565 | |
1566 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1567 | we have an unlocked terminal at the start. */ |
91bac16a | 1568 | |
86a5659e | 1569 | #ifdef TCXONC |
64e971c3 | 1570 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1571 | #endif |
1572 | #ifndef APOLLO | |
1573 | #ifdef TIOCSTART | |
64e971c3 | 1574 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1575 | #endif |
1576 | #endif | |
1577 | ||
d228f207 | 1578 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1579 | #ifdef TCOON |
d228f207 RS |
1580 | if (!flow_control) tcflow (input_fd, TCOON); |
1581 | #endif | |
51417996 | 1582 | #endif |
d228f207 | 1583 | |
b97ab886 | 1584 | #ifdef AIXHFT |
86a5659e JB |
1585 | hft_init (); |
1586 | #ifdef IBMR2AIX | |
1587 | { | |
1588 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1589 | to be only LF. This is the way that is done. */ | |
1590 | struct termio tty; | |
1591 | ||
1592 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1593 | write (1, "\033[20l", 5); | |
1594 | } | |
1595 | #endif | |
b97ab886 | 1596 | #endif /* AIXHFT */ |
86a5659e | 1597 | |
86a5659e JB |
1598 | #ifdef VMS |
1599 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1600 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1601 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1602 | */ | |
1603 | queue_kbd_input (0); | |
1604 | #endif /* VMS */ | |
1605 | } | |
1606 | ||
1607 | #ifdef F_SETFL | |
46f2fdac | 1608 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1609 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1610 | if (interrupt_input |
1611 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1612 | { |
64e971c3 RS |
1613 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1614 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1615 | init_sigio (input_fd); |
86a5659e JB |
1616 | } |
1617 | #endif /* F_GETOWN */ | |
46f2fdac | 1618 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1619 | #endif /* F_SETFL */ |
1620 | ||
1621 | #ifdef BSD4_1 | |
1622 | if (interrupt_input) | |
23dab951 | 1623 | init_sigio (input_fd); |
86a5659e JB |
1624 | #endif |
1625 | ||
1626 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1627 | #undef _IOFBF | |
1628 | #endif | |
1629 | #ifdef _IOFBF | |
1630 | /* This symbol is defined on recent USG systems. | |
1631 | Someone says without this call USG won't really buffer the file | |
1632 | even with a call to setbuf. */ | |
074c438c | 1633 | setvbuf (stdout, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1634 | #else |
074c438c | 1635 | setbuf (stdout, (char *) _sobuf); |
86a5659e | 1636 | #endif |
23cafe43 | 1637 | #ifdef HAVE_WINDOW_SYSTEM |
c4295188 KS |
1638 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1639 | needs the initialization code below. */ | |
ad00c243 GV |
1640 | if (EQ (Vwindow_system, Qnil) |
1641 | #ifndef WINDOWSNT | |
1642 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1643 | hook, but still need the rest of the initialization code below. */ | |
1644 | && (! read_socket_hook) | |
1645 | #endif | |
1646 | ) | |
c4295188 | 1647 | #endif |
4b311aaf RS |
1648 | set_terminal_modes (); |
1649 | ||
045942b2 EZ |
1650 | if (!term_initted |
1651 | && FRAMEP (Vterminal_frame) | |
1652 | && FRAME_TERMCAP_P (XFRAME (Vterminal_frame))) | |
1653 | init_frame_faces (XFRAME (Vterminal_frame)); | |
1654 | ||
86a5659e JB |
1655 | if (term_initted && no_redraw_on_reenter) |
1656 | { | |
1657 | if (display_completed) | |
1658 | direct_output_forward_char (0); | |
1659 | } | |
1660 | else | |
1661 | { | |
0137dbf7 | 1662 | frame_garbaged = 1; |
0137dbf7 JB |
1663 | if (FRAMEP (Vterminal_frame)) |
1664 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e | 1665 | } |
91bac16a | 1666 | |
86a5659e JB |
1667 | term_initted = 1; |
1668 | } | |
1669 | ||
1670 | /* Return nonzero if safe to use tabs in output. | |
1671 | At the time this is called, init_sys_modes has not been done yet. */ | |
177c0ea7 | 1672 | |
dfcf069d | 1673 | int |
86a5659e JB |
1674 | tabs_safe_p () |
1675 | { | |
91bac16a JB |
1676 | struct emacs_tty tty; |
1677 | ||
1678 | EMACS_GET_TTY (input_fd, &tty); | |
1679 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1680 | } |
73d5358f | 1681 | \f |
86a5659e | 1682 | /* Get terminal size from system. |
73d5358f RS |
1683 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1684 | We store 0 if there's no valid information. */ | |
86a5659e | 1685 | |
08633194 | 1686 | void |
0137dbf7 | 1687 | get_frame_size (widthp, heightp) |
86a5659e JB |
1688 | int *widthp, *heightp; |
1689 | { | |
86a5659e | 1690 | |
86a5659e | 1691 | #ifdef TIOCGWINSZ |
91bac16a JB |
1692 | |
1693 | /* BSD-style. */ | |
86a5659e | 1694 | struct winsize size; |
91bac16a JB |
1695 | |
1696 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1697 | *widthp = *heightp = 0; | |
1698 | else | |
1699 | { | |
1700 | *widthp = size.ws_col; | |
1701 | *heightp = size.ws_row; | |
1702 | } | |
1703 | ||
1704 | #else | |
1705 | #ifdef TIOCGSIZE | |
1706 | ||
1707 | /* SunOS - style. */ | |
177c0ea7 | 1708 | struct ttysize size; |
91bac16a JB |
1709 | |
1710 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1711 | *widthp = *heightp = 0; | |
1712 | else | |
1713 | { | |
1714 | *widthp = size.ts_cols; | |
1715 | *heightp = size.ts_lines; | |
1716 | } | |
1717 | ||
1718 | #else | |
86a5659e | 1719 | #ifdef VMS |
91bac16a JB |
1720 | |
1721 | struct sensemode tty; | |
177c0ea7 | 1722 | |
91bac16a | 1723 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, |
86a5659e JB |
1724 | &tty.class, 12, 0, 0, 0, 0); |
1725 | *widthp = tty.scr_wid; | |
1726 | *heightp = tty.scr_len; | |
91bac16a | 1727 | |
207bdbdb RS |
1728 | #else |
1729 | #ifdef MSDOS | |
1730 | *widthp = ScreenCols (); | |
1731 | *heightp = ScreenRows (); | |
86a5659e JB |
1732 | #else /* system doesn't know size */ |
1733 | *widthp = 0; | |
1734 | *heightp = 0; | |
207bdbdb | 1735 | #endif |
91bac16a JB |
1736 | |
1737 | #endif /* not VMS */ | |
1738 | #endif /* not SunOS-style */ | |
1739 | #endif /* not BSD-style */ | |
86a5659e | 1740 | } |
91bac16a | 1741 | |
73d5358f RS |
1742 | /* Set the logical window size associated with descriptor FD |
1743 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1744 | ||
1745 | int | |
1746 | set_window_size (fd, height, width) | |
1747 | int fd, height, width; | |
1748 | { | |
1749 | #ifdef TIOCSWINSZ | |
1750 | ||
1751 | /* BSD-style. */ | |
1752 | struct winsize size; | |
1753 | size.ws_row = height; | |
1754 | size.ws_col = width; | |
1755 | ||
1756 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1757 | return 0; /* error */ | |
1758 | else | |
1759 | return 1; | |
1760 | ||
1761 | #else | |
1762 | #ifdef TIOCSSIZE | |
1763 | ||
1764 | /* SunOS - style. */ | |
177c0ea7 | 1765 | struct ttysize size; |
73d5358f RS |
1766 | size.ts_lines = height; |
1767 | size.ts_cols = width; | |
1768 | ||
1769 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1770 | return 0; | |
1771 | else | |
1772 | return 1; | |
1773 | #else | |
1774 | return -1; | |
1775 | #endif /* not SunOS-style */ | |
1776 | #endif /* not BSD-style */ | |
1777 | } | |
1778 | ||
86a5659e | 1779 | \f |
91bac16a | 1780 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1781 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
08633194 | 1782 | void |
86a5659e JB |
1783 | reset_sys_modes () |
1784 | { | |
2d064114 | 1785 | struct frame *sf; |
177c0ea7 | 1786 | |
86a5659e JB |
1787 | if (noninteractive) |
1788 | { | |
1789 | fflush (stdout); | |
1790 | return; | |
1791 | } | |
1792 | if (!term_initted) | |
1793 | return; | |
23cafe43 | 1794 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1795 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1796 | needs the clean-up code below. */ | |
ad00c243 GV |
1797 | if (!EQ (Vwindow_system, Qnil) |
1798 | #ifndef WINDOWSNT | |
1799 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1800 | hook, but still need the rest of the clean-up code below. */ | |
1801 | || read_socket_hook | |
1802 | #endif | |
1803 | ) | |
86a5659e | 1804 | return; |
87485d6f | 1805 | #endif |
2d064114 | 1806 | sf = SELECTED_FRAME (); |
90022f5a KS |
1807 | cursor_to (FRAME_LINES (sf) - 1, 0); |
1808 | clear_end_of_line (FRAME_COLS (sf)); | |
86a5659e | 1809 | /* clear_end_of_line may move the cursor */ |
90022f5a | 1810 | cursor_to (FRAME_LINES (sf) - 1, 0); |
b97ab886 | 1811 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e | 1812 | { |
177c0ea7 | 1813 | /* HFT devices normally use ^J as a LF/CR. We forced it to |
86a5659e JB |
1814 | do the LF only. Now, we need to reset it. */ |
1815 | struct termio tty; | |
1816 | ||
1817 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1818 | write (1, "\033[20h", 5); | |
1819 | } | |
1820 | #endif | |
1821 | ||
1822 | reset_terminal_modes (); | |
1823 | fflush (stdout); | |
2a633456 | 1824 | #ifdef BSD_SYSTEM |
86a5659e JB |
1825 | #ifndef BSD4_1 |
1826 | /* Avoid possible loss of output when changing terminal modes. */ | |
1827 | fsync (fileno (stdout)); | |
1828 | #endif | |
1829 | #endif | |
91bac16a | 1830 | |
86a5659e | 1831 | #ifdef F_SETFL |
46f2fdac | 1832 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1833 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1834 | if (interrupt_input) |
1835 | { | |
1836 | reset_sigio (); | |
64e971c3 | 1837 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1838 | } |
1839 | #endif /* F_SETOWN */ | |
46f2fdac | 1840 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1841 | #ifdef O_NDELAY |
1842 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1843 | #endif | |
86a5659e JB |
1844 | #endif /* F_SETFL */ |
1845 | #ifdef BSD4_1 | |
1846 | if (interrupt_input) | |
1847 | reset_sigio (); | |
1848 | #endif /* BSD4_1 */ | |
91bac16a | 1849 | |
7e32a4fb KH |
1850 | if (old_tty_valid) |
1851 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) | |
1852 | ; | |
86a5659e | 1853 | |
207bdbdb RS |
1854 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1855 | dos_ttcooked (); | |
1856 | #endif | |
1857 | ||
441f6399 RS |
1858 | #ifdef SET_LINE_DISCIPLINE |
1859 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1860 | A different old line discipline is therefore not restored, yet. | |
1861 | Restore the old line discipline by hand. */ | |
1862 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1863 | #endif | |
1864 | ||
b97ab886 | 1865 | #ifdef AIXHFT |
86a5659e JB |
1866 | hft_reset (); |
1867 | #endif | |
9ae8f997 | 1868 | |
0ba73609 | 1869 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1870 | widen_foreground_group (); |
1871 | #endif | |
86a5659e JB |
1872 | } |
1873 | \f | |
1874 | #ifdef HAVE_PTYS | |
1875 | ||
1876 | /* Set up the proper status flags for use of a pty. */ | |
1877 | ||
08633194 | 1878 | void |
86a5659e JB |
1879 | setup_pty (fd) |
1880 | int fd; | |
1881 | { | |
1882 | /* I'm told that TOICREMOTE does not mean control chars | |
1883 | "can't be sent" but rather that they don't have | |
1884 | input-editing or signaling effects. | |
1885 | That should be good, because we have other ways | |
1886 | to do those things in Emacs. | |
1887 | However, telnet mode seems not to work on 4.2. | |
1888 | So TIOCREMOTE is turned off now. */ | |
1889 | ||
1890 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1891 | will hang. In particular, the "timeout" feature (which | |
1892 | causes a read to return if there is no data available) | |
1893 | does this. Also it is known that telnet mode will hang | |
1894 | in such a way that Emacs must be stopped (perhaps this | |
1895 | is the same problem). | |
177c0ea7 | 1896 | |
86a5659e JB |
1897 | If TIOCREMOTE is turned off, then there is a bug in |
1898 | hp-ux which sometimes loses data. Apparently the | |
1899 | code which blocks the master process when the internal | |
1900 | buffer fills up does not work. Other than this, | |
1901 | though, everything else seems to work fine. | |
177c0ea7 | 1902 | |
86a5659e JB |
1903 | Since the latter lossage is more benign, we may as well |
1904 | lose that way. -- cph */ | |
1905 | #ifdef FIONBIO | |
e20caf05 | 1906 | #if defined(SYSV_PTYS) || defined(UNIX98_PTYS) |
86a5659e JB |
1907 | { |
1908 | int on = 1; | |
1909 | ioctl (fd, FIONBIO, &on); | |
1910 | } | |
1911 | #endif | |
1912 | #endif | |
1913 | #ifdef IBMRTAIX | |
1914 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1915 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1916 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1917 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1918 | /* change this behavior, but I'm not going to hold my breath. */ | |
1919 | signal (SIGHUP, SIG_IGN); | |
1920 | #endif | |
1921 | } | |
1922 | #endif /* HAVE_PTYS */ | |
1923 | \f | |
1924 | #ifdef VMS | |
1925 | ||
1926 | /* Assigning an input channel is done at the start of Emacs execution. | |
1927 | This is called each time Emacs is resumed, also, but does nothing | |
1928 | because input_chain is no longer zero. */ | |
1929 | ||
dfcf069d | 1930 | void |
86a5659e JB |
1931 | init_vms_input () |
1932 | { | |
1933 | int status; | |
177c0ea7 | 1934 | |
91bac16a | 1935 | if (input_fd == 0) |
86a5659e | 1936 | { |
91bac16a | 1937 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1938 | if (! (status & 1)) |
1939 | LIB$STOP (status); | |
1940 | } | |
1941 | } | |
1942 | ||
1943 | /* Deassigning the input channel is done before exiting. */ | |
1944 | ||
dfcf069d | 1945 | void |
86a5659e JB |
1946 | stop_vms_input () |
1947 | { | |
91bac16a | 1948 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1949 | } |
1950 | ||
1951 | short input_buffer; | |
1952 | ||
1953 | /* Request reading one character into the keyboard buffer. | |
1954 | This is done as soon as the buffer becomes empty. */ | |
1955 | ||
dfcf069d | 1956 | void |
86a5659e JB |
1957 | queue_kbd_input () |
1958 | { | |
1959 | int status; | |
210b2b4f JB |
1960 | extern kbd_input_ast (); |
1961 | ||
86a5659e JB |
1962 | waiting_for_ast = 0; |
1963 | stop_input = 0; | |
91bac16a | 1964 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1965 | &input_iosb, kbd_input_ast, 1, |
1966 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1967 | } | |
1968 | ||
1969 | int input_count; | |
1970 | ||
1971 | /* Ast routine that is called when keyboard input comes in | |
1972 | in accord with the SYS$QIO above. */ | |
1973 | ||
dfcf069d | 1974 | void |
86a5659e JB |
1975 | kbd_input_ast () |
1976 | { | |
1977 | register int c = -1; | |
1978 | int old_errno = errno; | |
ffd56f97 | 1979 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1980 | |
1981 | if (waiting_for_ast) | |
1982 | SYS$SETEF (input_ef); | |
1983 | waiting_for_ast = 0; | |
1984 | input_count++; | |
1985 | #ifdef ASTDEBUG | |
1986 | if (input_count == 25) | |
1987 | exit (1); | |
1988 | printf ("Ast # %d,", input_count); | |
1989 | printf (" iosb = %x, %x, %x, %x", | |
1990 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1991 | input_iosb.term); | |
1992 | #endif | |
1993 | if (input_iosb.offset) | |
1994 | { | |
1995 | c = input_buffer; | |
1996 | #ifdef ASTDEBUG | |
1997 | printf (", char = 0%o", c); | |
1998 | #endif | |
1999 | } | |
2000 | #ifdef ASTDEBUG | |
2001 | printf ("\n"); | |
2002 | fflush (stdout); | |
2003 | sleep (1); | |
2004 | #endif | |
2005 | if (! stop_input) | |
2006 | queue_kbd_input (); | |
2007 | if (c >= 0) | |
2008 | { | |
2009 | struct input_event e; | |
50acda85 SM |
2010 | EVENT_INIT (e); |
2011 | ||
e43bd4f5 | 2012 | e.kind = ASCII_KEYSTROKE_EVENT; |
c81d47b4 | 2013 | XSETINT (e.code, c); |
2d064114 | 2014 | e.frame_or_window = selected_frame; |
86a5659e JB |
2015 | kbd_buffer_store_event (&e); |
2016 | } | |
ffd56f97 JB |
2017 | if (input_available_clear_time) |
2018 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
2019 | errno = old_errno; |
2020 | } | |
2021 | ||
2022 | /* Wait until there is something in kbd_buffer. */ | |
2023 | ||
dfcf069d | 2024 | void |
86a5659e JB |
2025 | wait_for_kbd_input () |
2026 | { | |
2027 | extern int have_process_input, process_exited; | |
2028 | ||
2029 | /* If already something, avoid doing system calls. */ | |
2030 | if (detect_input_pending ()) | |
2031 | { | |
2032 | return; | |
2033 | } | |
2034 | /* Clear a flag, and tell ast routine above to set it. */ | |
2035 | SYS$CLREF (input_ef); | |
2036 | waiting_for_ast = 1; | |
2037 | /* Check for timing error: ast happened while we were doing that. */ | |
2038 | if (!detect_input_pending ()) | |
2039 | { | |
2040 | /* No timing error: wait for flag to be set. */ | |
2041 | set_waiting_for_input (0); | |
2042 | SYS$WFLOR (input_ef, input_eflist); | |
61851c0e | 2043 | clear_waiting_for_input (); |
86a5659e JB |
2044 | if (!detect_input_pending ()) |
2045 | /* Check for subprocess input availability */ | |
2046 | { | |
2047 | int dsp = have_process_input || process_exited; | |
2048 | ||
2049 | SYS$CLREF (process_ef); | |
2050 | if (have_process_input) | |
2051 | process_command_input (); | |
2052 | if (process_exited) | |
2053 | process_exit (); | |
2054 | if (dsp) | |
2055 | { | |
2056 | update_mode_lines++; | |
56b18525 | 2057 | prepare_menu_bars (); |
3007ebfb | 2058 | redisplay_preserve_echo_area (18); |
86a5659e JB |
2059 | } |
2060 | } | |
2061 | } | |
2062 | waiting_for_ast = 0; | |
2063 | } | |
2064 | ||
2065 | /* Get rid of any pending QIO, when we are about to suspend | |
2066 | or when we want to throw away pending input. | |
2067 | We wait for a positive sign that the AST routine has run | |
2068 | and therefore there is no I/O request queued when we return. | |
2069 | SYS$SETAST is used to avoid a timing error. */ | |
2070 | ||
dfcf069d | 2071 | void |
86a5659e JB |
2072 | end_kbd_input () |
2073 | { | |
2074 | #ifdef ASTDEBUG | |
2075 | printf ("At end_kbd_input.\n"); | |
2076 | fflush (stdout); | |
2077 | sleep (1); | |
2078 | #endif | |
2079 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
2080 | { | |
91bac16a | 2081 | SYS$CANCEL (input_fd); |
86a5659e JB |
2082 | return; |
2083 | } | |
2084 | ||
2085 | SYS$SETAST (0); | |
2086 | /* Clear a flag, and tell ast routine above to set it. */ | |
2087 | SYS$CLREF (input_ef); | |
2088 | waiting_for_ast = 1; | |
2089 | stop_input = 1; | |
91bac16a | 2090 | SYS$CANCEL (input_fd); |
86a5659e JB |
2091 | SYS$SETAST (1); |
2092 | SYS$WAITFR (input_ef); | |
2093 | waiting_for_ast = 0; | |
2094 | } | |
2095 | ||
2096 | /* Wait for either input available or time interval expiry. */ | |
2097 | ||
dfcf069d | 2098 | void |
86a5659e JB |
2099 | input_wait_timeout (timeval) |
2100 | int timeval; /* Time to wait, in seconds */ | |
2101 | { | |
2102 | int time [2]; | |
2103 | static int zero = 0; | |
2104 | static int large = -10000000; | |
2105 | ||
2106 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2107 | ||
2108 | /* If already something, avoid doing system calls. */ | |
2109 | if (detect_input_pending ()) | |
2110 | { | |
2111 | return; | |
2112 | } | |
2113 | /* Clear a flag, and tell ast routine above to set it. */ | |
2114 | SYS$CLREF (input_ef); | |
2115 | waiting_for_ast = 1; | |
2116 | /* Check for timing error: ast happened while we were doing that. */ | |
2117 | if (!detect_input_pending ()) | |
2118 | { | |
2119 | /* No timing error: wait for flag to be set. */ | |
2120 | SYS$CANTIM (1, 0); | |
2121 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2122 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2123 | } | |
2124 | waiting_for_ast = 0; | |
2125 | } | |
2126 | ||
2127 | /* The standard `sleep' routine works some other way | |
2128 | and it stops working if you have ever quit out of it. | |
2129 | This one continues to work. */ | |
2130 | ||
2131 | sys_sleep (timeval) | |
2132 | int timeval; | |
2133 | { | |
2134 | int time [2]; | |
2135 | static int zero = 0; | |
2136 | static int large = -10000000; | |
177c0ea7 | 2137 | |
86a5659e JB |
2138 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ |
2139 | ||
2140 | SYS$CANTIM (1, 0); | |
2141 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2142 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2143 | } | |
2144 | ||
08633194 | 2145 | void |
23dab951 RS |
2146 | init_sigio (fd) |
2147 | int fd; | |
86a5659e JB |
2148 | { |
2149 | request_sigio (); | |
2150 | } | |
2151 | ||
2152 | reset_sigio () | |
2153 | { | |
2154 | unrequest_sigio (); | |
2155 | } | |
2156 | ||
08633194 | 2157 | void |
86a5659e JB |
2158 | request_sigio () |
2159 | { | |
2160 | croak ("request sigio"); | |
2161 | } | |
2162 | ||
08633194 | 2163 | void |
86a5659e JB |
2164 | unrequest_sigio () |
2165 | { | |
2166 | croak ("unrequest sigio"); | |
2167 | } | |
2168 | ||
2169 | #endif /* VMS */ | |
2170 | \f | |
2171 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2172 | #ifndef CANNOT_DUMP | |
2173 | #define NEED_STARTS | |
2174 | #endif | |
2175 | ||
2176 | #ifndef SYSTEM_MALLOC | |
2177 | #ifndef NEED_STARTS | |
2178 | #define NEED_STARTS | |
2179 | #endif | |
2180 | #endif | |
2181 | ||
2182 | #ifdef NEED_STARTS | |
2183 | /* Some systems that cannot dump also cannot implement these. */ | |
2184 | ||
2185 | /* | |
2186 | * Return the address of the start of the text segment prior to | |
2187 | * doing an unexec. After unexec the return value is undefined. | |
2188 | * See crt0.c for further explanation and _start. | |
2189 | * | |
2190 | */ | |
2191 | ||
c0c9ac48 | 2192 | #if !(defined (__NetBSD__) && defined (__ELF__)) |
260fe597 | 2193 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2194 | char * |
2195 | start_of_text () | |
2196 | { | |
2197 | #ifdef TEXT_START | |
2198 | return ((char *) TEXT_START); | |
2199 | #else | |
2200 | #ifdef GOULD | |
2201 | extern csrt (); | |
2202 | return ((char *) csrt); | |
2203 | #else /* not GOULD */ | |
2204 | extern int _start (); | |
2205 | return ((char *) _start); | |
2206 | #endif /* GOULD */ | |
2207 | #endif /* TEXT_START */ | |
2208 | } | |
260fe597 | 2209 | #endif /* not HAVE_TEXT_START */ |
c0c9ac48 | 2210 | #endif |
86a5659e JB |
2211 | |
2212 | /* | |
2213 | * Return the address of the start of the data segment prior to | |
2214 | * doing an unexec. After unexec the return value is undefined. | |
2215 | * See crt0.c for further information and definition of data_start. | |
2216 | * | |
2217 | * Apparently, on BSD systems this is etext at startup. On | |
2218 | * USG systems (swapping) this is highly mmu dependent and | |
2219 | * is also dependent on whether or not the program is running | |
2220 | * with shared text. Generally there is a (possibly large) | |
2221 | * gap between end of text and start of data with shared text. | |
2222 | * | |
2223 | * On Uniplus+ systems with shared text, data starts at a | |
2224 | * fixed address. Each port (from a given oem) is generally | |
2225 | * different, and the specific value of the start of data can | |
2226 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2227 | * however the method outlined in crt0.c seems to be more portable. | |
2228 | * | |
2229 | * Probably what will have to happen when a USG unexec is available, | |
2230 | * at least on UniPlus, is temacs will have to be made unshared so | |
2231 | * that text and data are contiguous. Then once loadup is complete, | |
2232 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2233 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2234 | * will be patched by unexec to the correct value. |
2235 | * | |
2236 | */ | |
177c0ea7 | 2237 | |
be3abfa2 | 2238 | #ifndef start_of_data |
86a5659e JB |
2239 | char * |
2240 | start_of_data () | |
2241 | { | |
2242 | #ifdef DATA_START | |
2243 | return ((char *) DATA_START); | |
6c65530f JB |
2244 | #else |
2245 | #ifdef ORDINARY_LINK | |
2246 | /* | |
2247 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2248 | * data_start isn't defined. We take the address of environ, which | |
2249 | * is known to live at or near the start of the system crt0.c, and | |
2250 | * we don't sweat the handful of bytes that might lose. | |
2251 | */ | |
2252 | extern char **environ; | |
2253 | ||
c4ea52a6 | 2254 | return ((char *) &environ); |
86a5659e JB |
2255 | #else |
2256 | extern int data_start; | |
2257 | return ((char *) &data_start); | |
6c65530f JB |
2258 | #endif /* ORDINARY_LINK */ |
2259 | #endif /* DATA_START */ | |
86a5659e | 2260 | } |
be3abfa2 | 2261 | #endif /* start_of_data */ |
86a5659e | 2262 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ |
86a5659e | 2263 | \f |
c0c86835 KH |
2264 | /* init_system_name sets up the string for the Lisp function |
2265 | system-name to return. */ | |
86a5659e JB |
2266 | |
2267 | #ifdef BSD4_1 | |
2268 | #include <whoami.h> | |
2269 | #endif | |
2270 | ||
c0c86835 | 2271 | extern Lisp_Object Vsystem_name; |
86a5659e | 2272 | |
f8a80313 | 2273 | #ifndef BSD4_1 |
f8a80313 RS |
2274 | #ifndef VMS |
2275 | #ifdef HAVE_SOCKETS | |
2276 | #include <sys/socket.h> | |
2277 | #include <netdb.h> | |
2278 | #endif /* HAVE_SOCKETS */ | |
2279 | #endif /* not VMS */ | |
f8a80313 RS |
2280 | #endif /* not BSD4_1 */ |
2281 | ||
8581cd64 KH |
2282 | #ifdef TRY_AGAIN |
2283 | #ifndef HAVE_H_ERRNO | |
2284 | extern int h_errno; | |
2285 | #endif | |
2286 | #endif /* TRY_AGAIN */ | |
2287 | ||
c0c86835 KH |
2288 | void |
2289 | init_system_name () | |
86a5659e | 2290 | { |
86a5659e | 2291 | #ifdef BSD4_1 |
c0c86835 | 2292 | Vsystem_name = build_string (sysname); |
67004ffb | 2293 | #else |
67004ffb | 2294 | #ifdef VMS |
c0c86835 KH |
2295 | char *sp, *end; |
2296 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2297 | Vsystem_name = build_string ("vax-vms"); | |
2298 | else if ((end = index (sp, ':')) == 0) | |
2299 | Vsystem_name = build_string (sp); | |
2300 | else | |
2301 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2302 | #else |
210b2b4f | 2303 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2304 | struct utsname uts; |
2305 | uname (&uts); | |
2306 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2307 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2308 | unsigned int hostname_size = 256; |
c0c86835 KH |
2309 | char *hostname = (char *) alloca (hostname_size); |
2310 | ||
2311 | /* Try to get the host name; if the buffer is too short, try | |
2312 | again. Apparently, the only indication gethostname gives of | |
2313 | whether the buffer was large enough is the presence or absence | |
2314 | of a '\0' in the string. Eech. */ | |
2315 | for (;;) | |
2316 | { | |
2317 | gethostname (hostname, hostname_size - 1); | |
2318 | hostname[hostname_size - 1] = '\0'; | |
2319 | ||
2320 | /* Was the buffer large enough for the '\0'? */ | |
2321 | if (strlen (hostname) < hostname_size - 1) | |
2322 | break; | |
2323 | ||
2324 | hostname_size <<= 1; | |
2325 | hostname = (char *) alloca (hostname_size); | |
2326 | } | |
67004ffb | 2327 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2328 | /* Turn the hostname into the official, fully-qualified hostname. |
2329 | Don't do this if we're going to dump; this can confuse system | |
2330 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2331 | #ifndef CANNOT_DUMP |
c0c86835 | 2332 | if (initialized) |
67004ffb | 2333 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2334 | if (! index (hostname, '.')) |
2335 | { | |
2336 | struct hostent *hp; | |
2337 | int count; | |
2338 | for (count = 0;; count++) | |
2339 | { | |
e24f1d55 | 2340 | #ifdef TRY_AGAIN |
960d894c | 2341 | h_errno = 0; |
e24f1d55 | 2342 | #endif |
960d894c | 2343 | hp = gethostbyname (hostname); |
efa04277 | 2344 | #ifdef TRY_AGAIN |
960d894c KH |
2345 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2346 | #endif | |
2347 | break; | |
2348 | if (count >= 5) | |
2349 | break; | |
2350 | Fsleep_for (make_number (1), Qnil); | |
2351 | } | |
2352 | if (hp) | |
2353 | { | |
2354 | char *fqdn = (char *) hp->h_name; | |
7c15926f | 2355 | #if 0 |
960d894c | 2356 | char *p; |
7c15926f | 2357 | #endif |
960d894c KH |
2358 | |
2359 | if (!index (fqdn, '.')) | |
2360 | { | |
2361 | /* We still don't have a fully qualified domain name. | |
2362 | Try to find one in the list of alternate names */ | |
2363 | char **alias = hp->h_aliases; | |
2364 | while (*alias && !index (*alias, '.')) | |
2365 | alias++; | |
2366 | if (*alias) | |
2367 | fqdn = *alias; | |
2368 | } | |
2369 | hostname = fqdn; | |
ab1649fe | 2370 | #if 0 |
960d894c KH |
2371 | /* Convert the host name to lower case. */ |
2372 | /* Using ctype.h here would introduce a possible locale | |
2373 | dependence that is probably wrong for hostnames. */ | |
2374 | p = hostname; | |
2375 | while (*p) | |
2376 | { | |
2377 | if (*p >= 'A' && *p <= 'Z') | |
2378 | *p += 'a' - 'A'; | |
2379 | p++; | |
2380 | } | |
2381 | #endif | |
2382 | } | |
2383 | } | |
67004ffb | 2384 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2385 | /* We used to try using getdomainname here, |
2386 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2387 | getdomainname gets the NIS/YP domain which often is not the same |
2388 | as in Internet domain name. */ | |
6250a9db KH |
2389 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2390 | correct Internet domain. */ | |
0b93aa53 | 2391 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2392 | if (! index (hostname, '.')) |
2393 | { | |
2394 | /* The hostname is not fully qualified. Append the domain name. */ | |
2395 | ||
2396 | int hostlen = strlen (hostname); | |
2397 | int domain_size = 256; | |
2398 | ||
2399 | for (;;) | |
2400 | { | |
825e7e55 RS |
2401 | char *domain = (char *) alloca (domain_size + 1); |
2402 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2403 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2404 | if (sys_domain_size <= 0) | |
2405 | break; | |
2406 | if (domain_size < sys_domain_size) | |
2407 | { | |
2408 | domain_size = sys_domain_size; | |
2409 | continue; | |
2410 | } | |
b05af5d3 | 2411 | strcpy (fqdn, hostname); |
825e7e55 RS |
2412 | if (domain[0] == '.') |
2413 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2414 | else if (domain[0] != 0) |
825e7e55 RS |
2415 | { |
2416 | fqdn[hostlen] = '.'; | |
2417 | strcpy (fqdn + hostlen + 1, domain); | |
2418 | } | |
b05af5d3 PE |
2419 | hostname = fqdn; |
2420 | break; | |
2421 | } | |
2422 | } | |
0b93aa53 | 2423 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2424 | #endif /* 0 */ |
c0c86835 | 2425 | Vsystem_name = build_string (hostname); |
67004ffb | 2426 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2427 | #endif /* VMS */ |
67004ffb | 2428 | #endif /* BSD4_1 */ |
c0c86835 KH |
2429 | { |
2430 | unsigned char *p; | |
d5db4077 | 2431 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
2432 | if (*p == ' ' || *p == '\t') |
2433 | *p = '-'; | |
2434 | } | |
67004ffb | 2435 | } |
86a5659e | 2436 | \f |
7964ba9e | 2437 | #ifndef MSDOS |
86a5659e | 2438 | #ifndef VMS |
86d1f23a | 2439 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2440 | |
86d1f23a KH |
2441 | #include "sysselect.h" |
2442 | #undef select | |
2443 | ||
2444 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2445 | /* Cause explanatory error message at compile time, |
2446 | since the select emulation is not good enough for X. */ | |
2447 | int *x = &x_windows_lose_if_no_select_system_call; | |
2448 | #endif | |
2449 | ||
2450 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2451 | * Only checks read descriptors. | |
2452 | */ | |
2453 | /* How long to wait between checking fds in select */ | |
2454 | #define SELECT_PAUSE 1 | |
2455 | int select_alarmed; | |
2456 | ||
2457 | /* For longjmp'ing back to read_input_waiting. */ | |
2458 | ||
2459 | jmp_buf read_alarm_throw; | |
2460 | ||
2461 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2462 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2463 | ||
2464 | int read_alarm_should_throw; | |
2465 | ||
2466 | SIGTYPE | |
2467 | select_alarm () | |
2468 | { | |
2469 | select_alarmed = 1; | |
2470 | #ifdef BSD4_1 | |
2471 | sigrelse (SIGALRM); | |
2472 | #else /* not BSD4_1 */ | |
2473 | signal (SIGALRM, SIG_IGN); | |
2474 | #endif /* not BSD4_1 */ | |
2475 | if (read_alarm_should_throw) | |
2476 | longjmp (read_alarm_throw, 1); | |
2477 | } | |
2478 | ||
fe03522b | 2479 | #ifndef WINDOWSNT |
86a5659e JB |
2480 | /* Only rfds are checked. */ |
2481 | int | |
86d1f23a | 2482 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2483 | int nfds; |
86d1f23a KH |
2484 | SELECT_TYPE *rfds, *wfds, *efds; |
2485 | EMACS_TIME *timeout; | |
86a5659e | 2486 | { |
ffdcc91d | 2487 | int ravail = 0; |
86d1f23a KH |
2488 | SELECT_TYPE orfds; |
2489 | int timeoutval; | |
2490 | int *local_timeout; | |
86a5659e JB |
2491 | extern int proc_buffered_char[]; |
2492 | #ifndef subprocesses | |
2493 | int process_tick = 0, update_tick = 0; | |
2494 | #else | |
2495 | extern int process_tick, update_tick; | |
2496 | #endif | |
86a5659e JB |
2497 | unsigned char buf; |
2498 | ||
86d1f23a KH |
2499 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2500 | /* If we're using X, then the native select will work; we only need the | |
2501 | emulation for non-X usage. */ | |
2502 | if (!NILP (Vwindow_system)) | |
2503 | return select (nfds, rfds, wfds, efds, timeout); | |
2504 | #endif | |
2505 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2506 | local_timeout = &timeoutval; | |
2507 | FD_ZERO (&orfds); | |
86a5659e JB |
2508 | if (rfds) |
2509 | { | |
2510 | orfds = *rfds; | |
86d1f23a | 2511 | FD_ZERO (rfds); |
86a5659e JB |
2512 | } |
2513 | if (wfds) | |
86d1f23a | 2514 | FD_ZERO (wfds); |
86a5659e | 2515 | if (efds) |
86d1f23a | 2516 | FD_ZERO (efds); |
86a5659e JB |
2517 | |
2518 | /* If we are looking only for the terminal, with no timeout, | |
2519 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2520 | if (*local_timeout == 100000 && process_tick == update_tick |
2521 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2522 | { |
86d1f23a KH |
2523 | int fd; |
2524 | for (fd = 1; fd < nfds; ++fd) | |
2525 | if (FD_ISSET (fd, &orfds)) | |
2526 | goto hardway; | |
86a5659e JB |
2527 | if (! detect_input_pending ()) |
2528 | read_input_waiting (); | |
86d1f23a | 2529 | FD_SET (0, rfds); |
86a5659e JB |
2530 | return 1; |
2531 | } | |
2532 | ||
86d1f23a | 2533 | hardway: |
86a5659e JB |
2534 | /* Once a second, till the timer expires, check all the flagged read |
2535 | * descriptors to see if any input is available. If there is some then | |
2536 | * set the corresponding bit in the return copy of rfds. | |
177c0ea7 | 2537 | */ |
86a5659e JB |
2538 | while (1) |
2539 | { | |
86d1f23a | 2540 | register int to_check, fd; |
86a5659e JB |
2541 | |
2542 | if (rfds) | |
2543 | { | |
86d1f23a | 2544 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2545 | { |
86d1f23a | 2546 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2547 | { |
2548 | int avail = 0, status = 0; | |
2549 | ||
86d1f23a | 2550 | if (fd == 0) |
86a5659e JB |
2551 | avail = detect_input_pending (); /* Special keyboard handler */ |
2552 | else | |
2553 | { | |
2554 | #ifdef FIONREAD | |
2555 | status = ioctl (fd, FIONREAD, &avail); | |
2556 | #else /* no FIONREAD */ | |
2557 | /* Hoping it will return -1 if nothing available | |
2558 | or 0 if all 0 chars requested are read. */ | |
2559 | if (proc_buffered_char[fd] >= 0) | |
2560 | avail = 1; | |
2561 | else | |
2562 | { | |
2563 | avail = read (fd, &buf, 1); | |
2564 | if (avail > 0) | |
2565 | proc_buffered_char[fd] = buf; | |
2566 | } | |
2567 | #endif /* no FIONREAD */ | |
2568 | } | |
2569 | if (status >= 0 && avail > 0) | |
2570 | { | |
86d1f23a | 2571 | FD_SET (fd, rfds); |
86a5659e JB |
2572 | ravail++; |
2573 | } | |
2574 | } | |
2575 | } | |
2576 | } | |
2577 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2578 | break; | |
ffdcc91d GM |
2579 | |
2580 | turn_on_atimers (0); | |
2581 | signal (SIGALRM, select_alarm); | |
86a5659e JB |
2582 | select_alarmed = 0; |
2583 | alarm (SELECT_PAUSE); | |
177c0ea7 | 2584 | |
86a5659e JB |
2585 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
2586 | while (select_alarmed == 0 && *local_timeout != 0 | |
2587 | && process_tick == update_tick) | |
2588 | { | |
2589 | /* If we are interested in terminal input, | |
2590 | wait by reading the terminal. | |
2591 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2592 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2593 | { |
2594 | read_input_waiting (); | |
2595 | if (detect_input_pending ()) | |
2596 | select_alarmed = 1; | |
2597 | } | |
2598 | else | |
2599 | pause (); | |
2600 | } | |
2601 | (*local_timeout) -= SELECT_PAUSE; | |
177c0ea7 | 2602 | |
ffdcc91d GM |
2603 | /* Reset the old alarm if there was one. */ |
2604 | turn_on_atimers (1); | |
177c0ea7 | 2605 | |
86a5659e JB |
2606 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
2607 | break; | |
2608 | } | |
2609 | return ravail; | |
2610 | } | |
fe03522b | 2611 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2612 | |
2613 | /* Read keyboard input into the standard buffer, | |
2614 | waiting for at least one character. */ | |
2615 | ||
dfcf069d | 2616 | void |
86a5659e JB |
2617 | read_input_waiting () |
2618 | { | |
34567704 JB |
2619 | int nread, i; |
2620 | extern int quit_char; | |
86a5659e JB |
2621 | |
2622 | if (read_socket_hook) | |
2623 | { | |
9f893fc6 KS |
2624 | struct input_event hold_quit; |
2625 | ||
2626 | EVENT_INIT (hold_quit); | |
2627 | hold_quit.kind = NO_EVENT; | |
2628 | ||
86a5659e JB |
2629 | read_alarm_should_throw = 0; |
2630 | if (! setjmp (read_alarm_throw)) | |
9f893fc6 | 2631 | nread = (*read_socket_hook) (0, 1, &hold_quit); |
86a5659e JB |
2632 | else |
2633 | nread = -1; | |
f4a7e5bd | 2634 | |
9f893fc6 KS |
2635 | if (hold_quit.kind != NO_EVENT) |
2636 | kbd_buffer_store_event (&hold_quit); | |
86a5659e JB |
2637 | } |
2638 | else | |
86a5659e | 2639 | { |
50acda85 | 2640 | struct input_event e; |
f4a7e5bd RS |
2641 | char buf[3]; |
2642 | nread = read (fileno (stdin), buf, 1); | |
50acda85 | 2643 | EVENT_INIT (e); |
f4a7e5bd RS |
2644 | |
2645 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
e43bd4f5 | 2646 | e.kind = ASCII_KEYSTROKE_EVENT; |
2d064114 | 2647 | e.frame_or_window = selected_frame; |
f4a7e5bd RS |
2648 | e.modifiers = 0; |
2649 | for (i = 0; i < nread; i++) | |
a00d5589 | 2650 | { |
f4a7e5bd RS |
2651 | /* Convert chars > 0177 to meta events if desired. |
2652 | We do this under the same conditions that read_avail_input does. */ | |
2653 | if (read_socket_hook == 0) | |
2654 | { | |
2655 | /* If the user says she has a meta key, then believe her. */ | |
2656 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2657 | e.modifiers = meta_modifier; | |
2658 | if (meta_key != 2) | |
2659 | buf[i] &= ~0x80; | |
2660 | } | |
b95520f5 | 2661 | |
c81d47b4 | 2662 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2663 | kbd_buffer_store_event (&e); |
2664 | /* Don't look at input that follows a C-g too closely. | |
2665 | This reduces lossage due to autorepeat on C-g. */ | |
2666 | if (buf[i] == quit_char) | |
2667 | break; | |
2668 | } | |
86a5659e JB |
2669 | } |
2670 | } | |
2671 | ||
2672 | #endif /* not HAVE_SELECT */ | |
2673 | #endif /* not VMS */ | |
7964ba9e | 2674 | #endif /* not MSDOS */ |
86a5659e JB |
2675 | \f |
2676 | #ifdef BSD4_1 | |
08633194 | 2677 | void |
23dab951 RS |
2678 | init_sigio (fd) |
2679 | int fd; | |
86a5659e JB |
2680 | { |
2681 | if (noninteractive) | |
2682 | return; | |
2683 | lmode = LINTRUP | lmode; | |
23dab951 | 2684 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2685 | } |
2686 | ||
dfcf069d | 2687 | void |
86a5659e JB |
2688 | reset_sigio () |
2689 | { | |
2690 | if (noninteractive) | |
2691 | return; | |
2692 | lmode = ~LINTRUP & lmode; | |
2693 | ioctl (0, TIOCLSET, &lmode); | |
2694 | } | |
2695 | ||
08633194 | 2696 | void |
86a5659e JB |
2697 | request_sigio () |
2698 | { | |
2699 | sigrelse (SIGTINT); | |
2700 | ||
2701 | interrupts_deferred = 0; | |
2702 | } | |
2703 | ||
08633194 | 2704 | void |
86a5659e JB |
2705 | unrequest_sigio () |
2706 | { | |
2707 | sighold (SIGTINT); | |
2708 | ||
2709 | interrupts_deferred = 1; | |
2710 | } | |
2711 | ||
2712 | /* still inside #ifdef BSD4_1 */ | |
2713 | #ifdef subprocesses | |
2714 | ||
2715 | int sigheld; /* Mask of held signals */ | |
2716 | ||
dfcf069d | 2717 | void |
86a5659e JB |
2718 | sigholdx (signum) |
2719 | int signum; | |
2720 | { | |
2721 | sigheld |= sigbit (signum); | |
2722 | sighold (signum); | |
2723 | } | |
2724 | ||
dfcf069d | 2725 | void |
86a5659e JB |
2726 | sigisheld (signum) |
2727 | int signum; | |
2728 | { | |
2729 | sigheld |= sigbit (signum); | |
2730 | } | |
2731 | ||
dfcf069d | 2732 | void |
86a5659e JB |
2733 | sigunhold (signum) |
2734 | int signum; | |
2735 | { | |
2736 | sigheld &= ~sigbit (signum); | |
2737 | sigrelse (signum); | |
2738 | } | |
2739 | ||
dfcf069d | 2740 | void |
86a5659e JB |
2741 | sigfree () /* Free all held signals */ |
2742 | { | |
2743 | int i; | |
2744 | for (i = 0; i < NSIG; i++) | |
2745 | if (sigheld & sigbit (i)) | |
2746 | sigrelse (i); | |
2747 | sigheld = 0; | |
2748 | } | |
2749 | ||
dfcf069d | 2750 | int |
86a5659e JB |
2751 | sigbit (i) |
2752 | { | |
2753 | return 1 << (i - 1); | |
2754 | } | |
2755 | #endif /* subprocesses */ | |
2756 | #endif /* BSD4_1 */ | |
2757 | \f | |
2758 | /* POSIX signals support - DJB */ | |
2759 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2760 | ||
2761 | #ifdef POSIX_SIGNALS | |
2762 | ||
c639b0e3 | 2763 | sigset_t empty_mask, full_mask; |
86a5659e | 2764 | |
86a5659e JB |
2765 | signal_handler_t |
2766 | sys_signal (int signal_number, signal_handler_t action) | |
2767 | { | |
c639b0e3 | 2768 | struct sigaction new_action, old_action; |
86a5659e | 2769 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2770 | new_action.sa_handler = action; |
275464e7 | 2771 | #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT) |
25ab68af | 2772 | /* Emacs mostly works better with restartable system services. If this |
55fafcf0 RS |
2773 | flag exists, we probably want to turn it on here. |
2774 | However, on some systems this resets the timeout of `select' | |
2775 | which means that `select' never finishes if it keeps getting signals. | |
2776 | BROKEN_SA_RESTART is defined on those systems. */ | |
275464e7 SM |
2777 | /* It's not clear why the comment above says "mostly works better". --Stef |
2778 | When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll | |
2779 | for pending input so we need long-running syscalls to be interrupted | |
2780 | after a signal that sets the interrupt_input_pending flag. */ | |
25ab68af RS |
2781 | new_action.sa_flags = SA_RESTART; |
2782 | #else | |
4a785b6e | 2783 | new_action.sa_flags = 0; |
25ab68af | 2784 | #endif |
d32b2f3c | 2785 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2786 | return (old_action.sa_handler); |
86a5659e JB |
2787 | } |
2788 | ||
e065a56e JB |
2789 | #ifndef __GNUC__ |
2790 | /* If we're compiling with GCC, we don't need this function, since it | |
2791 | can be written as a macro. */ | |
2792 | sigset_t | |
2793 | sys_sigmask (int sig) | |
2794 | { | |
2795 | sigset_t mask; | |
2796 | sigemptyset (&mask); | |
2797 | sigaddset (&mask, sig); | |
2798 | return mask; | |
2799 | } | |
2800 | #endif | |
2801 | ||
86a5659e JB |
2802 | /* I'd like to have these guys return pointers to the mask storage in here, |
2803 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2804 | safe and pass the structure. It normally won't be more than 2 bytes | |
2805 | anyhow. - DJB */ | |
2806 | ||
2807 | sigset_t | |
2808 | sys_sigblock (sigset_t new_mask) | |
2809 | { | |
2810 | sigset_t old_mask; | |
2811 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2812 | return (old_mask); | |
2813 | } | |
2814 | ||
2815 | sigset_t | |
2816 | sys_sigunblock (sigset_t new_mask) | |
2817 | { | |
2818 | sigset_t old_mask; | |
2819 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2820 | return (old_mask); | |
2821 | } | |
2822 | ||
2823 | sigset_t | |
2824 | sys_sigsetmask (sigset_t new_mask) | |
2825 | { | |
2826 | sigset_t old_mask; | |
2827 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2828 | return (old_mask); | |
2829 | } | |
2830 | ||
2831 | #endif /* POSIX_SIGNALS */ | |
2832 | \f | |
b80263be | 2833 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
2834 | static char *my_sys_siglist[NSIG]; |
2835 | # ifdef sys_siglist | |
2836 | # undef sys_siglist | |
2837 | # endif | |
2838 | # define sys_siglist my_sys_siglist | |
2839 | #endif | |
2840 | ||
2841 | void | |
2842 | init_signals () | |
2843 | { | |
2844 | #ifdef POSIX_SIGNALS | |
2845 | sigemptyset (&empty_mask); | |
2846 | sigfillset (&full_mask); | |
2847 | #endif | |
2848 | ||
b80263be | 2849 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
2850 | if (! initialized) |
2851 | { | |
2852 | # ifdef SIGABRT | |
2853 | sys_siglist[SIGABRT] = "Aborted"; | |
2854 | # endif | |
2855 | # ifdef SIGAIO | |
2856 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
2857 | # endif | |
2858 | # ifdef SIGALRM | |
2859 | sys_siglist[SIGALRM] = "Alarm clock"; | |
2860 | # endif | |
2861 | # ifdef SIGBUS | |
2862 | sys_siglist[SIGBUS] = "Bus error"; | |
2863 | # endif | |
2864 | # ifdef SIGCLD | |
2865 | sys_siglist[SIGCLD] = "Child status changed"; | |
2866 | # endif | |
2867 | # ifdef SIGCHLD | |
2868 | sys_siglist[SIGCHLD] = "Child status changed"; | |
2869 | # endif | |
2870 | # ifdef SIGCONT | |
2871 | sys_siglist[SIGCONT] = "Continued"; | |
2872 | # endif | |
2873 | # ifdef SIGDANGER | |
2874 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
2875 | # endif | |
2876 | # ifdef SIGDGNOTIFY | |
2877 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
2878 | # endif | |
2879 | # ifdef SIGEMT | |
2880 | sys_siglist[SIGEMT] = "Emulation trap"; | |
2881 | # endif | |
2882 | # ifdef SIGFPE | |
2883 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
2884 | # endif | |
2885 | # ifdef SIGFREEZE | |
2886 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
2887 | # endif | |
2888 | # ifdef SIGGRANT | |
2889 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
2890 | # endif | |
2891 | # ifdef SIGHUP | |
2892 | sys_siglist[SIGHUP] = "Hangup"; | |
2893 | # endif | |
2894 | # ifdef SIGILL | |
2895 | sys_siglist[SIGILL] = "Illegal instruction"; | |
2896 | # endif | |
2897 | # ifdef SIGINT | |
2898 | sys_siglist[SIGINT] = "Interrupt"; | |
2899 | # endif | |
2900 | # ifdef SIGIO | |
2901 | sys_siglist[SIGIO] = "I/O possible"; | |
2902 | # endif | |
2903 | # ifdef SIGIOINT | |
2904 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
2905 | # endif | |
2906 | # ifdef SIGIOT | |
2907 | sys_siglist[SIGIOT] = "IOT trap"; | |
2908 | # endif | |
2909 | # ifdef SIGKILL | |
2910 | sys_siglist[SIGKILL] = "Killed"; | |
2911 | # endif | |
2912 | # ifdef SIGLOST | |
2913 | sys_siglist[SIGLOST] = "Resource lost"; | |
2914 | # endif | |
2915 | # ifdef SIGLWP | |
2916 | sys_siglist[SIGLWP] = "SIGLWP"; | |
2917 | # endif | |
2918 | # ifdef SIGMSG | |
2919 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
2920 | # endif | |
2921 | # ifdef SIGPHONE | |
2922 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
2923 | # endif | |
2924 | # ifdef SIGPIPE | |
2925 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
2926 | # endif | |
2927 | # ifdef SIGPOLL | |
2928 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
2929 | # endif | |
2930 | # ifdef SIGPROF | |
2931 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
2932 | # endif | |
2933 | # ifdef SIGPTY | |
2934 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
2935 | # endif | |
2936 | # ifdef SIGPWR | |
2937 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
2938 | # endif | |
2939 | # ifdef SIGQUIT | |
2940 | sys_siglist[SIGQUIT] = "Quit"; | |
2941 | # endif | |
2942 | # ifdef SIGRETRACT | |
2943 | sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; | |
2944 | # endif | |
2945 | # ifdef SIGSAK | |
2946 | sys_siglist[SIGSAK] = "Secure attention"; | |
2947 | # endif | |
2948 | # ifdef SIGSEGV | |
2949 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
2950 | # endif | |
2951 | # ifdef SIGSOUND | |
2952 | sys_siglist[SIGSOUND] = "Sound completed"; | |
2953 | # endif | |
2954 | # ifdef SIGSTOP | |
2955 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
2956 | # endif | |
2957 | # ifdef SIGSTP | |
2958 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
2959 | # endif | |
2960 | # ifdef SIGSYS | |
2961 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
2962 | # endif | |
2963 | # ifdef SIGTERM | |
2964 | sys_siglist[SIGTERM] = "Terminated"; | |
2965 | # endif | |
2966 | # ifdef SIGTHAW | |
2967 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
2968 | # endif | |
2969 | # ifdef SIGTRAP | |
2970 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
2971 | # endif | |
2972 | # ifdef SIGTSTP | |
2973 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
2974 | # endif | |
2975 | # ifdef SIGTTIN | |
2976 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
2977 | # endif | |
2978 | # ifdef SIGTTOU | |
2979 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
2980 | # endif | |
2981 | # ifdef SIGURG | |
2982 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
2983 | # endif | |
2984 | # ifdef SIGUSR1 | |
2985 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
2986 | # endif | |
2987 | # ifdef SIGUSR2 | |
2988 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
2989 | # endif | |
2990 | # ifdef SIGVTALRM | |
2991 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
2992 | # endif | |
2993 | # ifdef SIGWAITING | |
2994 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
2995 | # endif | |
2996 | # ifdef SIGWINCH | |
2997 | sys_siglist[SIGWINCH] = "Window size changed"; | |
2998 | # endif | |
2999 | # ifdef SIGWIND | |
3000 | sys_siglist[SIGWIND] = "SIGWIND"; | |
3001 | # endif | |
3002 | # ifdef SIGXCPU | |
3003 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
3004 | # endif | |
3005 | # ifdef SIGXFSZ | |
3006 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
3007 | # endif | |
3008 | } | |
b80263be | 3009 | #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */ |
ca9c0567 PE |
3010 | } |
3011 | \f | |
9927a7b1 | 3012 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
3013 | #ifdef random |
3014 | #define HAVE_RANDOM | |
3015 | #endif | |
3016 | #endif | |
3017 | ||
3018 | /* Figure out how many bits the system's random number generator uses. | |
3019 | `random' and `lrand48' are assumed to return 31 usable bits. | |
3020 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
3021 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
3022 | ||
3023 | #ifndef RAND_BITS | |
3024 | # ifdef HAVE_RANDOM | |
3025 | # define RAND_BITS 31 | |
3026 | # else /* !HAVE_RANDOM */ | |
3027 | # ifdef HAVE_LRAND48 | |
3028 | # define RAND_BITS 31 | |
3029 | # define random lrand48 | |
3030 | # else /* !HAVE_LRAND48 */ | |
3031 | # define RAND_BITS 15 | |
3032 | # if RAND_MAX == 32767 | |
3033 | # define random rand | |
3034 | # else /* RAND_MAX != 32767 */ | |
3035 | # if RAND_MAX == 2147483647 | |
3036 | # define random() (rand () >> 16) | |
3037 | # else /* RAND_MAX != 2147483647 */ | |
3038 | # ifdef USG | |
3039 | # define random rand | |
3040 | # else | |
3041 | # define random() (rand () >> 16) | |
2a633456 | 3042 | # endif /* !USG */ |
4bb8c8b7 KH |
3043 | # endif /* RAND_MAX != 2147483647 */ |
3044 | # endif /* RAND_MAX != 32767 */ | |
3045 | # endif /* !HAVE_LRAND48 */ | |
3046 | # endif /* !HAVE_RANDOM */ | |
3047 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 3048 | |
4bb8c8b7 KH |
3049 | void |
3050 | seed_random (arg) | |
3051 | long arg; | |
86a5659e | 3052 | { |
4bb8c8b7 KH |
3053 | #ifdef HAVE_RANDOM |
3054 | srandom ((unsigned int)arg); | |
f8b53a82 | 3055 | #else |
4bb8c8b7 | 3056 | # ifdef HAVE_LRAND48 |
76425a49 | 3057 | srand48 (arg); |
4bb8c8b7 KH |
3058 | # else |
3059 | srand ((unsigned int)arg); | |
3060 | # endif | |
2e46c7c6 | 3061 | #endif |
86a5659e JB |
3062 | } |
3063 | ||
4bb8c8b7 KH |
3064 | /* |
3065 | * Build a full Emacs-sized word out of whatever we've got. | |
3066 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
3067 | */ | |
3068 | long | |
3069 | get_random () | |
3070 | { | |
3071 | long val = random (); | |
3072 | #if VALBITS > RAND_BITS | |
3073 | val = (val << RAND_BITS) ^ random (); | |
3074 | #if VALBITS > 2*RAND_BITS | |
3075 | val = (val << RAND_BITS) ^ random (); | |
3076 | #if VALBITS > 3*RAND_BITS | |
3077 | val = (val << RAND_BITS) ^ random (); | |
3078 | #if VALBITS > 4*RAND_BITS | |
3079 | val = (val << RAND_BITS) ^ random (); | |
3080 | #endif /* need at least 5 */ | |
3081 | #endif /* need at least 4 */ | |
3082 | #endif /* need at least 3 */ | |
3083 | #endif /* need at least 2 */ | |
3084 | return val & ((1L << VALBITS) - 1); | |
3085 | } | |
86a5659e JB |
3086 | \f |
3087 | #ifdef WRONG_NAME_INSQUE | |
3088 | ||
3089 | insque (q,p) | |
3090 | caddr_t q,p; | |
3091 | { | |
3092 | _insque (q,p); | |
3093 | } | |
3094 | ||
3095 | #endif | |
3096 | \f | |
3097 | #ifdef VMS | |
3098 | ||
3099 | #ifdef getenv | |
3100 | /* If any place else asks for the TERM variable, | |
3101 | allow it to be overridden with the EMACS_TERM variable | |
3102 | before attempting to translate the logical name TERM. As a last | |
3103 | resort, ask for VAX C's special idea of the TERM variable. */ | |
3104 | #undef getenv | |
3105 | char * | |
3106 | sys_getenv (name) | |
3107 | char *name; | |
3108 | { | |
3109 | register char *val; | |
3110 | static char buf[256]; | |
3111 | static struct dsc$descriptor_s equiv | |
3112 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
3113 | static struct dsc$descriptor_s d_name | |
3114 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
3115 | short eqlen; | |
3116 | ||
3117 | if (!strcmp (name, "TERM")) | |
3118 | { | |
3119 | val = (char *) getenv ("EMACS_TERM"); | |
3120 | if (val) | |
3121 | return val; | |
3122 | } | |
3123 | ||
3124 | d_name.dsc$w_length = strlen (name); | |
3125 | d_name.dsc$a_pointer = name; | |
986ffb24 | 3126 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
3127 | { |
3128 | char *str = (char *) xmalloc (eqlen + 1); | |
3129 | bcopy (buf, str, eqlen); | |
3130 | str[eqlen] = '\0'; | |
3131 | /* This is a storage leak, but a pain to fix. With luck, | |
3132 | no one will ever notice. */ | |
3133 | return str; | |
3134 | } | |
3135 | return (char *) getenv (name); | |
3136 | } | |
3137 | #endif /* getenv */ | |
3138 | ||
3139 | #ifdef abort | |
3140 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
3141 | to force a call on the debugger from within the image. */ | |
3142 | #undef abort | |
3143 | sys_abort () | |
3144 | { | |
3145 | reset_sys_modes (); | |
3146 | LIB$SIGNAL (SS$_DEBUG); | |
3147 | } | |
3148 | #endif /* abort */ | |
3149 | #endif /* VMS */ | |
3150 | \f | |
3151 | #ifdef VMS | |
3152 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 3153 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 3154 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
3155 | cannot be shared. The VMS linker incorrectly forces you to use a private |
3156 | version which is uninitialized... If not for this "feature", we | |
3157 | could use the C library definition of sys_nerr and sys_errlist. */ | |
3158 | int sys_nerr = 35; | |
3159 | char *sys_errlist[] = | |
3160 | { | |
3161 | "error 0", | |
3162 | "not owner", | |
3163 | "no such file or directory", | |
3164 | "no such process", | |
3165 | "interrupted system call", | |
3166 | "i/o error", | |
3167 | "no such device or address", | |
3168 | "argument list too long", | |
3169 | "exec format error", | |
3170 | "bad file number", | |
3171 | "no child process", | |
3172 | "no more processes", | |
3173 | "not enough memory", | |
3174 | "permission denied", | |
3175 | "bad address", | |
3176 | "block device required", | |
3177 | "mount devices busy", | |
3178 | "file exists", | |
3179 | "cross-device link", | |
3180 | "no such device", | |
3181 | "not a directory", | |
3182 | "is a directory", | |
3183 | "invalid argument", | |
3184 | "file table overflow", | |
3185 | "too many open files", | |
3186 | "not a typewriter", | |
3187 | "text file busy", | |
3188 | "file too big", | |
3189 | "no space left on device", | |
3190 | "illegal seek", | |
3191 | "read-only file system", | |
3192 | "too many links", | |
3193 | "broken pipe", | |
3194 | "math argument", | |
3195 | "result too large", | |
3196 | "I/O stream empty", | |
3197 | "vax/vms specific error code nontranslatable error" | |
3198 | }; | |
ea5a0917 | 3199 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
3200 | #endif /* LINK_CRTL_SHARE */ |
3201 | #endif /* VMS */ | |
7088d1ca RM |
3202 | |
3203 | #ifndef HAVE_STRERROR | |
fe03522b | 3204 | #ifndef WINDOWSNT |
7088d1ca RM |
3205 | char * |
3206 | strerror (errnum) | |
3207 | int errnum; | |
3208 | { | |
3209 | extern char *sys_errlist[]; | |
3210 | extern int sys_nerr; | |
3211 | ||
3212 | if (errnum >= 0 && errnum < sys_nerr) | |
3213 | return sys_errlist[errnum]; | |
3214 | return (char *) "Unknown error"; | |
3215 | } | |
fe03522b | 3216 | #endif /* not WINDOWSNT */ |
7088d1ca | 3217 | #endif /* ! HAVE_STRERROR */ |
86a5659e | 3218 | \f |
86a5659e | 3219 | int |
68c45bf0 | 3220 | emacs_open (path, oflag, mode) |
8c2ba7de | 3221 | const char *path; |
86a5659e JB |
3222 | int oflag, mode; |
3223 | { | |
3224 | register int rtnval; | |
68c45bf0 PE |
3225 | |
3226 | #ifdef BSD4_1 | |
177c0ea7 | 3227 | if (oflag & O_CREAT) |
68c45bf0 PE |
3228 | return creat (path, mode); |
3229 | #endif | |
177c0ea7 | 3230 | |
86a5659e | 3231 | while ((rtnval = open (path, oflag, mode)) == -1 |
275464e7 SM |
3232 | && (errno == EINTR)) |
3233 | QUIT; | |
86a5659e JB |
3234 | return (rtnval); |
3235 | } | |
3236 | ||
dfcf069d | 3237 | int |
68c45bf0 | 3238 | emacs_close (fd) |
86a5659e JB |
3239 | int fd; |
3240 | { | |
fe111daf | 3241 | int did_retry = 0; |
86a5659e JB |
3242 | register int rtnval; |
3243 | ||
3244 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3245 | && (errno == EINTR)) |
3246 | did_retry = 1; | |
3247 | ||
3248 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3249 | file descriptor. If it did the second close will fail with | |
3250 | errno = EBADF. That means we have succeeded. */ | |
3251 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3252 | return 0; | |
3253 | ||
86a5659e JB |
3254 | return rtnval; |
3255 | } | |
3256 | ||
86a5659e | 3257 | int |
68c45bf0 | 3258 | emacs_read (fildes, buf, nbyte) |
86a5659e JB |
3259 | int fildes; |
3260 | char *buf; | |
3261 | unsigned int nbyte; | |
3262 | { | |
3263 | register int rtnval; | |
177c0ea7 | 3264 | |
86a5659e | 3265 | while ((rtnval = read (fildes, buf, nbyte)) == -1 |
275464e7 SM |
3266 | && (errno == EINTR)) |
3267 | QUIT; | |
86a5659e JB |
3268 | return (rtnval); |
3269 | } | |
3270 | ||
3271 | int | |
68c45bf0 | 3272 | emacs_write (fildes, buf, nbyte) |
86a5659e | 3273 | int fildes; |
7b1cc119 | 3274 | const char *buf; |
86a5659e JB |
3275 | unsigned int nbyte; |
3276 | { | |
b95520f5 | 3277 | register int rtnval, bytes_written; |
86a5659e | 3278 | |
b95520f5 BF |
3279 | bytes_written = 0; |
3280 | ||
3281 | while (nbyte > 0) | |
3282 | { | |
3283 | rtnval = write (fildes, buf, nbyte); | |
3284 | ||
3285 | if (rtnval == -1) | |
3286 | { | |
3287 | if (errno == EINTR) | |
275464e7 | 3288 | { QUIT; continue; } |
b95520f5 | 3289 | else |
aa670904 | 3290 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3291 | } |
3292 | ||
3293 | buf += rtnval; | |
3294 | nbyte -= rtnval; | |
3295 | bytes_written += rtnval; | |
3296 | } | |
3297 | return (bytes_written); | |
86a5659e | 3298 | } |
86a5659e JB |
3299 | \f |
3300 | #ifdef USG | |
3301 | /* | |
3302 | * All of the following are for USG. | |
3303 | * | |
3304 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3305 | * that the user program has elected to catch. Thus the system call | |
3306 | * must be retried in these cases. To handle this without massive | |
3307 | * changes in the source code, we remap the standard system call names | |
3308 | * to names for our own functions in sysdep.c that do the system call | |
3309 | * with retries. Actually, for portability reasons, it is good | |
3310 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3311 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3312 | * adds an extra level of function call overhead but it is almost |
3313 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3314 | */ | |
3315 | ||
86a5659e JB |
3316 | /* |
3317 | * Warning, this function may not duplicate 4.2 action properly | |
3318 | * under error conditions. | |
3319 | */ | |
3320 | ||
3321 | #ifndef MAXPATHLEN | |
3322 | /* In 4.1, param.h fails to define this. */ | |
3323 | #define MAXPATHLEN 1024 | |
3324 | #endif | |
3325 | ||
3326 | #ifndef HAVE_GETWD | |
3327 | ||
3328 | char * | |
3329 | getwd (pathname) | |
3330 | char *pathname; | |
3331 | { | |
3332 | char *npath, *spath; | |
3333 | extern char *getcwd (); | |
3334 | ||
9ac0d9e0 | 3335 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3336 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 3337 | if (spath == 0) |
18b6bc73 GM |
3338 | { |
3339 | UNBLOCK_INPUT; | |
3340 | return spath; | |
3341 | } | |
86a5659e JB |
3342 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3343 | up to first slash. Should be harmless on other systems. */ | |
3344 | while (*npath && *npath != '/') | |
3345 | npath++; | |
3346 | strcpy (pathname, npath); | |
3347 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3348 | UNBLOCK_INPUT; |
86a5659e JB |
3349 | return pathname; |
3350 | } | |
3351 | ||
3352 | #endif /* HAVE_GETWD */ | |
3353 | ||
3354 | /* | |
3355 | * Emulate rename using unlink/link. Note that this is | |
3356 | * only partially correct. Also, doesn't enforce restriction | |
3357 | * that files be of same type (regular->regular, dir->dir, etc). | |
3358 | */ | |
3359 | ||
4746118a JB |
3360 | #ifndef HAVE_RENAME |
3361 | ||
86a5659e | 3362 | rename (from, to) |
19c7afdf JB |
3363 | const char *from; |
3364 | const char *to; | |
86a5659e JB |
3365 | { |
3366 | if (access (from, 0) == 0) | |
3367 | { | |
3368 | unlink (to); | |
3369 | if (link (from, to) == 0) | |
3370 | if (unlink (from) == 0) | |
3371 | return (0); | |
3372 | } | |
3373 | return (-1); | |
3374 | } | |
3375 | ||
4746118a JB |
3376 | #endif |
3377 | ||
86a5659e JB |
3378 | |
3379 | #ifdef HPUX | |
3380 | #ifndef HAVE_PERROR | |
3381 | ||
3382 | /* HPUX curses library references perror, but as far as we know | |
3383 | it won't be called. Anyway this definition will do for now. */ | |
3384 | ||
3385 | perror () | |
3386 | { | |
3387 | } | |
3388 | ||
3389 | #endif /* not HAVE_PERROR */ | |
3390 | #endif /* HPUX */ | |
3391 | ||
3392 | #ifndef HAVE_DUP2 | |
3393 | ||
3394 | /* | |
3395 | * Emulate BSD dup2. First close newd if it already exists. | |
3396 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3397 | * until we are, then close the unsuccessful ones. | |
3398 | */ | |
3399 | ||
3400 | dup2 (oldd, newd) | |
3401 | int oldd; | |
3402 | int newd; | |
3403 | { | |
3404 | register int fd, ret; | |
177c0ea7 | 3405 | |
68c45bf0 | 3406 | emacs_close (newd); |
86a5659e JB |
3407 | |
3408 | #ifdef F_DUPFD | |
68c45bf0 | 3409 | return fcntl (oldd, F_DUPFD, newd); |
86a5659e JB |
3410 | #else |
3411 | fd = dup (old); | |
3412 | if (fd == -1) | |
3413 | return -1; | |
3414 | if (fd == new) | |
3415 | return new; | |
3416 | ret = dup2 (old,new); | |
68c45bf0 | 3417 | emacs_close (fd); |
86a5659e JB |
3418 | return ret; |
3419 | #endif | |
3420 | } | |
3421 | ||
3422 | #endif /* not HAVE_DUP2 */ | |
3423 | ||
3424 | /* | |
3425 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3426 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3427 | * Only needed when subprocesses are defined. | |
3428 | */ | |
3429 | ||
3430 | #ifdef subprocesses | |
3431 | #ifndef VMS | |
3432 | #ifndef HAVE_GETTIMEOFDAY | |
3433 | #ifdef HAVE_TIMEVAL | |
177c0ea7 | 3434 | |
86a5659e | 3435 | /* ARGSUSED */ |
dfcf069d | 3436 | int |
86a5659e JB |
3437 | gettimeofday (tp, tzp) |
3438 | struct timeval *tp; | |
3439 | struct timezone *tzp; | |
3440 | { | |
3441 | extern long time (); | |
3442 | ||
177c0ea7 | 3443 | tp->tv_sec = time ((long *)0); |
86a5659e | 3444 | tp->tv_usec = 0; |
4ca7594f RS |
3445 | if (tzp != 0) |
3446 | tzp->tz_minuteswest = -1; | |
dfcf069d | 3447 | return 0; |
86a5659e | 3448 | } |
177c0ea7 | 3449 | |
86a5659e JB |
3450 | #endif |
3451 | #endif | |
3452 | #endif | |
3453 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
177c0ea7 | 3454 | |
86a5659e JB |
3455 | /* |
3456 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3457 | */ | |
3458 | ||
dfcf069d | 3459 | void |
86a5659e JB |
3460 | croak (badfunc) |
3461 | char *badfunc; | |
3462 | { | |
3463 | printf ("%s not yet implemented\r\n", badfunc); | |
3464 | reset_sys_modes (); | |
3465 | exit (1); | |
3466 | } | |
3467 | ||
3468 | #endif /* USG */ | |
3469 | \f | |
86a5659e JB |
3470 | /* Directory routines for systems that don't have them. */ |
3471 | ||
3472 | #ifdef SYSV_SYSTEM_DIR | |
3473 | ||
3474 | #include <dirent.h> | |
3475 | ||
c4ea52a6 | 3476 | #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR) |
cfdc57af | 3477 | |
86a5659e JB |
3478 | int |
3479 | closedir (dirp) | |
3480 | register DIR *dirp; /* stream from opendir */ | |
3481 | { | |
cfdc57af RS |
3482 | int rtnval; |
3483 | ||
68c45bf0 | 3484 | rtnval = emacs_close (dirp->dd_fd); |
1b929d25 | 3485 | |
65aa44ac JB |
3486 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3487 | in one block. Why in the world are we freeing this ourselves | |
3488 | anyway? */ | |
3489 | #if ! (defined (sun) && defined (USG5_4)) | |
3490 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3491 | #endif | |
9ac0d9e0 | 3492 | xfree ((char *) dirp); |
cfdc57af RS |
3493 | |
3494 | return rtnval; | |
86a5659e | 3495 | } |
1db6401c | 3496 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3497 | #endif /* SYSV_SYSTEM_DIR */ |
3498 | ||
3499 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3500 | ||
3501 | DIR * | |
3502 | opendir (filename) | |
3503 | char *filename; /* name of directory */ | |
3504 | { | |
3505 | register DIR *dirp; /* -> malloc'ed storage */ | |
3506 | register int fd; /* file descriptor for read */ | |
3507 | struct stat sbuf; /* result of fstat */ | |
3508 | ||
68c45bf0 | 3509 | fd = emacs_open (filename, O_RDONLY, 0); |
86a5659e JB |
3510 | if (fd < 0) |
3511 | return 0; | |
3512 | ||
9ac0d9e0 | 3513 | BLOCK_INPUT; |
86a5659e JB |
3514 | if (fstat (fd, &sbuf) < 0 |
3515 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
7f77dbe3 | 3516 | || (dirp = (DIR *) xmalloc (sizeof (DIR))) == 0) |
86a5659e | 3517 | { |
68c45bf0 | 3518 | emacs_close (fd); |
9ac0d9e0 | 3519 | UNBLOCK_INPUT; |
86a5659e JB |
3520 | return 0; /* bad luck today */ |
3521 | } | |
9ac0d9e0 | 3522 | UNBLOCK_INPUT; |
86a5659e JB |
3523 | |
3524 | dirp->dd_fd = fd; | |
3525 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3526 | ||
3527 | return dirp; | |
3528 | } | |
3529 | ||
3530 | void | |
3531 | closedir (dirp) | |
3532 | register DIR *dirp; /* stream from opendir */ | |
3533 | { | |
68c45bf0 | 3534 | emacs_close (dirp->dd_fd); |
9ac0d9e0 | 3535 | xfree ((char *) dirp); |
86a5659e JB |
3536 | } |
3537 | ||
3538 | ||
3539 | #ifndef VMS | |
3540 | #define DIRSIZ 14 | |
3541 | struct olddir | |
3542 | { | |
3543 | ino_t od_ino; /* inode */ | |
3544 | char od_name[DIRSIZ]; /* filename */ | |
3545 | }; | |
3546 | #endif /* not VMS */ | |
3547 | ||
3548 | struct direct dir_static; /* simulated directory contents */ | |
3549 | ||
3550 | /* ARGUSED */ | |
3551 | struct direct * | |
3552 | readdir (dirp) | |
3553 | register DIR *dirp; /* stream from opendir */ | |
3554 | { | |
3555 | #ifndef VMS | |
3556 | register struct olddir *dp; /* -> directory data */ | |
3557 | #else /* VMS */ | |
3558 | register struct dir$_name *dp; /* -> directory data */ | |
3559 | register struct dir$_version *dv; /* -> version data */ | |
3560 | #endif /* VMS */ | |
3561 | ||
3562 | for (; ;) | |
3563 | { | |
3564 | if (dirp->dd_loc >= dirp->dd_size) | |
3565 | dirp->dd_loc = dirp->dd_size = 0; | |
3566 | ||
3567 | if (dirp->dd_size == 0 /* refill buffer */ | |
68c45bf0 | 3568 | && (dirp->dd_size = emacs_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) |
86a5659e JB |
3569 | return 0; |
3570 | ||
3571 | #ifndef VMS | |
3572 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3573 | dirp->dd_loc += sizeof (struct olddir); | |
3574 | ||
3575 | if (dp->od_ino != 0) /* not deleted entry */ | |
3576 | { | |
3577 | dir_static.d_ino = dp->od_ino; | |
3578 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3579 | dir_static.d_name[DIRSIZ] = '\0'; | |
3580 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3581 | dir_static.d_reclen = sizeof (struct direct) | |
3582 | - MAXNAMLEN + 3 | |
3583 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3584 | return &dir_static; /* -> simulated structure */ | |
3585 | } | |
3586 | #else /* VMS */ | |
3587 | dp = (struct dir$_name *) dirp->dd_buf; | |
3588 | if (dirp->dd_loc == 0) | |
3589 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3590 | : dp->dir$b_namecount; | |
3591 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3592 | dir_static.d_ino = dv->dir$w_fid_num; | |
3593 | dir_static.d_namlen = dp->dir$b_namecount; | |
3594 | dir_static.d_reclen = sizeof (struct direct) | |
3595 | - MAXNAMLEN + 3 | |
3596 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3597 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3598 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3599 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3600 | return &dir_static; | |
3601 | #endif /* VMS */ | |
3602 | } | |
3603 | } | |
3604 | ||
3605 | #ifdef VMS | |
3606 | /* readdirver is just like readdir except it returns all versions of a file | |
3607 | as separate entries. */ | |
3608 | ||
3609 | /* ARGUSED */ | |
3610 | struct direct * | |
3611 | readdirver (dirp) | |
3612 | register DIR *dirp; /* stream from opendir */ | |
3613 | { | |
3614 | register struct dir$_name *dp; /* -> directory data */ | |
3615 | register struct dir$_version *dv; /* -> version data */ | |
3616 | ||
3617 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3618 | dirp->dd_loc = dirp->dd_size = 0; | |
3619 | ||
3620 | if (dirp->dd_size == 0 /* refill buffer */ | |
3621 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3622 | return 0; | |
3623 | ||
3624 | dp = (struct dir$_name *) dirp->dd_buf; | |
3625 | if (dirp->dd_loc == 0) | |
3626 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3627 | : dp->dir$b_namecount; | |
3628 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3629 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3630 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3631 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3632 | dir_static.d_ino = dv->dir$w_fid_num; | |
3633 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3634 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3635 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3636 | return &dir_static; | |
3637 | } | |
3638 | ||
3639 | #endif /* VMS */ | |
3640 | ||
3641 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3642 | |
3643 | \f | |
53ea491a | 3644 | int |
061ea326 | 3645 | set_file_times (filename, atime, mtime) |
8c2ba7de | 3646 | const char *filename; |
53ea491a KH |
3647 | EMACS_TIME atime, mtime; |
3648 | { | |
3649 | #ifdef HAVE_UTIMES | |
3650 | struct timeval tv[2]; | |
3651 | tv[0] = atime; | |
3652 | tv[1] = mtime; | |
8334eb21 RS |
3653 | return utimes (filename, tv); |
3654 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3655 | struct utimbuf utb; |
3656 | utb.actime = EMACS_SECS (atime); | |
3657 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3658 | return utime (filename, &utb); |
3659 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3660 | } |
3661 | \f | |
23524fb9 JB |
3662 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3663 | ||
3664 | #ifndef HAVE_MKDIR | |
3665 | /* | |
3666 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3667 | * | |
3668 | * If you want it, it's yours. All I ask in return is that if you | |
3669 | * figure out how to do this in a Bourne Shell script you send me | |
3670 | * a copy. | |
3671 | * sdcsvax!rmr or rmr@uscd | |
3672 | * | |
3673 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3674 | * subroutine. 11Mar86; hoptoad!gnu | |
3675 | * | |
3676 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3677 | * subroutine didn't return EEXIST. It does now. | |
3678 | */ | |
3679 | ||
3680 | /* | |
3681 | * Make a directory. | |
3682 | */ | |
f3892946 RS |
3683 | #ifdef MKDIR_PROTOTYPE |
3684 | MKDIR_PROTOTYPE | |
3685 | #else | |
23524fb9 JB |
3686 | int |
3687 | mkdir (dpath, dmode) | |
3688 | char *dpath; | |
3689 | int dmode; | |
f3892946 | 3690 | #endif |
23524fb9 | 3691 | { |
039f26a4 | 3692 | int cpid, status, fd; |
23524fb9 JB |
3693 | struct stat statbuf; |
3694 | ||
3695 | if (stat (dpath, &statbuf) == 0) | |
3696 | { | |
3697 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3698 | return -1; | |
3699 | } | |
3700 | ||
3701 | /* If stat fails for a reason other than non-existence, return error */ | |
3702 | if (errno != ENOENT) | |
3703 | return -1; | |
3704 | ||
039f26a4 | 3705 | synch_process_alive = 1; |
23524fb9 JB |
3706 | switch (cpid = fork ()) |
3707 | { | |
3708 | ||
039f26a4 | 3709 | case -1: /* Error in fork */ |
23524fb9 JB |
3710 | return (-1); /* Errno is set already */ |
3711 | ||
3712 | case 0: /* Child process */ | |
3713 | /* | |
3714 | * Cheap hack to set mode of new directory. Since this | |
3715 | * child process is going away anyway, we zap its umask. | |
3716 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3717 | * directory. Does anybody care? | |
3718 | */ | |
3719 | status = umask (0); /* Get current umask */ | |
3720 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
68c45bf0 | 3721 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3722 | if (fd >= 0) |
3723 | { | |
3724 | dup2 (fd, 0); | |
3725 | dup2 (fd, 1); | |
3726 | dup2 (fd, 2); | |
3727 | } | |
23524fb9 JB |
3728 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3729 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3730 | ||
3731 | default: /* Parent process */ | |
039f26a4 | 3732 | wait_for_termination (cpid); |
23524fb9 JB |
3733 | } |
3734 | ||
6b0824c9 JD |
3735 | if (synch_process_death != 0 || synch_process_retcode != 0 |
3736 | || synch_process_termsig != 0) | |
23524fb9 JB |
3737 | { |
3738 | errno = EIO; /* We don't know why, but */ | |
3739 | return -1; /* /bin/mkdir failed */ | |
3740 | } | |
3741 | ||
3742 | return 0; | |
3743 | } | |
3744 | #endif /* not HAVE_MKDIR */ | |
3745 | ||
3746 | #ifndef HAVE_RMDIR | |
3747 | int | |
3748 | rmdir (dpath) | |
3749 | char *dpath; | |
3750 | { | |
039f26a4 | 3751 | int cpid, status, fd; |
23524fb9 JB |
3752 | struct stat statbuf; |
3753 | ||
3754 | if (stat (dpath, &statbuf) != 0) | |
3755 | { | |
3756 | /* Stat just set errno. We don't have to */ | |
3757 | return -1; | |
3758 | } | |
3759 | ||
039f26a4 | 3760 | synch_process_alive = 1; |
23524fb9 JB |
3761 | switch (cpid = fork ()) |
3762 | { | |
3763 | ||
039f26a4 | 3764 | case -1: /* Error in fork */ |
23524fb9 JB |
3765 | return (-1); /* Errno is set already */ |
3766 | ||
3767 | case 0: /* Child process */ | |
68c45bf0 | 3768 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
3769 | if (fd >= 0) |
3770 | { | |
3771 | dup2 (fd, 0); | |
3772 | dup2 (fd, 1); | |
3773 | dup2 (fd, 2); | |
3774 | } | |
f560db78 RS |
3775 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3776 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3777 | ||
207bdbdb | 3778 | default: /* Parent process */ |
f560db78 | 3779 | wait_for_termination (cpid); |
23524fb9 JB |
3780 | } |
3781 | ||
6b0824c9 JD |
3782 | if (synch_process_death != 0 || synch_process_retcode != 0 |
3783 | || synch_process_termsig != 0) | |
23524fb9 JB |
3784 | { |
3785 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3786 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3787 | } |
3788 | ||
3789 | return 0; | |
3790 | } | |
3791 | #endif /* !HAVE_RMDIR */ | |
3792 | ||
3793 | ||
86a5659e JB |
3794 | \f |
3795 | /* Functions for VMS */ | |
3796 | #ifdef VMS | |
91bac16a | 3797 | #include "vms-pwd.h" |
86a5659e JB |
3798 | #include <acldef.h> |
3799 | #include <chpdef.h> | |
3800 | #include <jpidef.h> | |
3801 | ||
3802 | /* Return as a string the VMS error string pertaining to STATUS. | |
3803 | Reuses the same static buffer each time it is called. */ | |
3804 | ||
3805 | char * | |
3806 | vmserrstr (status) | |
3807 | int status; /* VMS status code */ | |
3808 | { | |
3809 | int bufadr[2]; | |
3810 | short len; | |
3811 | static char buf[257]; | |
3812 | ||
3813 | bufadr[0] = sizeof buf - 1; | |
3814 | bufadr[1] = (int) buf; | |
3815 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3816 | return "untranslatable VMS error status"; | |
3817 | buf[len] = '\0'; | |
3818 | return buf; | |
3819 | } | |
3820 | ||
3821 | #ifdef access | |
3822 | #undef access | |
177c0ea7 | 3823 | |
86a5659e JB |
3824 | /* The following is necessary because 'access' emulation by VMS C (2.0) does |
3825 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3826 | */ | |
3827 | ||
3828 | #ifdef VMS4_4 | |
3829 | ||
3830 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3831 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3832 | ||
3833 | typedef union { | |
3834 | struct { | |
3835 | unsigned short s_buflen; | |
3836 | unsigned short s_code; | |
3837 | char *s_bufadr; | |
3838 | unsigned short *s_retlenadr; | |
3839 | } s; | |
3840 | int end; | |
3841 | } item; | |
3842 | #define buflen s.s_buflen | |
3843 | #define code s.s_code | |
3844 | #define bufadr s.s_bufadr | |
3845 | #define retlenadr s.s_retlenadr | |
3846 | ||
3847 | #define R_OK 4 /* test for read permission */ | |
3848 | #define W_OK 2 /* test for write permission */ | |
3849 | #define X_OK 1 /* test for execute (search) permission */ | |
3850 | #define F_OK 0 /* test for presence of file */ | |
3851 | ||
3852 | int | |
3853 | sys_access (path, mode) | |
3854 | char *path; | |
3855 | int mode; | |
3856 | { | |
3857 | static char *user = NULL; | |
3858 | char dir_fn[512]; | |
3859 | ||
3860 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3861 | * access can treat the directory like a file. */ | |
3862 | if (directory_file_name (path, dir_fn)) | |
3863 | path = dir_fn; | |
177c0ea7 | 3864 | |
86a5659e JB |
3865 | if (mode == F_OK) |
3866 | return access (path, mode); | |
3867 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3868 | return -1; | |
3869 | { | |
3870 | int stat; | |
3871 | int flags; | |
3872 | int acces; | |
3873 | unsigned short int dummy; | |
3874 | item itemlst[3]; | |
3875 | static int constant = ACL$C_FILE; | |
3876 | DESCRIPTOR (path_desc, path); | |
3877 | DESCRIPTOR (user_desc, user); | |
177c0ea7 | 3878 | |
86a5659e JB |
3879 | flags = 0; |
3880 | acces = 0; | |
3881 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3882 | return stat; | |
3883 | if (mode & R_OK) | |
3884 | acces |= CHP$M_READ; | |
3885 | if (mode & W_OK) | |
3886 | acces |= CHP$M_WRITE; | |
3887 | itemlst[0].buflen = sizeof (int); | |
3888 | itemlst[0].code = CHP$_FLAGS; | |
3889 | itemlst[0].bufadr = (char *) &flags; | |
3890 | itemlst[0].retlenadr = &dummy; | |
3891 | itemlst[1].buflen = sizeof (int); | |
3892 | itemlst[1].code = CHP$_ACCESS; | |
3893 | itemlst[1].bufadr = (char *) &acces; | |
3894 | itemlst[1].retlenadr = &dummy; | |
3895 | itemlst[2].end = CHP$_END; | |
3896 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3897 | return stat == SS$_NORMAL ? 0 : -1; | |
3898 | } | |
3899 | } | |
3900 | ||
3901 | #else /* not VMS4_4 */ | |
3902 | ||
3903 | #include <prvdef.h> | |
fe03522b RS |
3904 | #define ACE$M_WRITE 2 |
3905 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3906 | |
3907 | static unsigned short memid, grpid; | |
3908 | static unsigned int uic; | |
3909 | ||
3910 | /* Called from init_sys_modes, so it happens not very often | |
3911 | but at least each time Emacs is loaded. */ | |
dfcf069d | 3912 | void |
86a5659e JB |
3913 | sys_access_reinit () |
3914 | { | |
3915 | uic = 0; | |
3916 | } | |
3917 | ||
3918 | int | |
3919 | sys_access (filename, type) | |
3920 | char * filename; | |
3921 | int type; | |
3922 | { | |
3923 | struct FAB fab; | |
3924 | struct XABPRO xab; | |
3925 | int status, size, i, typecode, acl_controlled; | |
3926 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3927 | union prvdef prvmask; | |
3928 | ||
3929 | /* Get UIC and GRP values for protection checking. */ | |
3930 | if (uic == 0) | |
3931 | { | |
3932 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3933 | if (! (status & 1)) | |
3934 | return -1; | |
3935 | memid = uic & 0xFFFF; | |
3936 | grpid = uic >> 16; | |
3937 | } | |
3938 | ||
fe03522b | 3939 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3940 | return access (filename, type); |
3941 | ||
3942 | /* Check write protection. */ | |
177c0ea7 | 3943 | |
fe03522b | 3944 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 3945 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
3946 | |
3947 | /* Find privilege bits */ | |
986ffb24 | 3948 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3949 | if (! (status & 1)) |
3950 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3951 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3952 | return 0; /* BYPASS enabled */ | |
3953 | fab = cc$rms_fab; | |
3954 | fab.fab$b_fac = FAB$M_GET; | |
3955 | fab.fab$l_fna = filename; | |
3956 | fab.fab$b_fns = strlen (filename); | |
3957 | fab.fab$l_xab = &xab; | |
3958 | xab = cc$rms_xabpro; | |
3959 | xab.xab$l_aclbuf = aclbuf; | |
3960 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3961 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3962 | if (! (status & 1)) |
3963 | return -1; | |
986ffb24 | 3964 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 3965 | /* Check system access */ |
ea5a0917 | 3966 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
3967 | return 0; |
3968 | /* Check ACL entries, if any */ | |
3969 | acl_controlled = 0; | |
3970 | if (xab.xab$w_acllen > 0) | |
3971 | { | |
3972 | aclptr = aclbuf; | |
3973 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3974 | while (*aclptr && aclptr < aclend) | |
3975 | { | |
3976 | size = (*aclptr & 0xff) / 4; | |
3977 | typecode = (*aclptr >> 8) & 0xff; | |
3978 | if (typecode == ACE$C_KEYID) | |
3979 | for (i = size - 1; i > 1; i--) | |
3980 | if (aclptr[i] == uic) | |
3981 | { | |
3982 | acl_controlled = 1; | |
3983 | if (aclptr[1] & ACE$M_WRITE) | |
3984 | return 0; /* Write access through ACL */ | |
3985 | } | |
3986 | aclptr = &aclptr[size]; | |
3987 | } | |
3988 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3989 | return -1; | |
3990 | } | |
3991 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 3992 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 3993 | return 0; |
ea5a0917 | 3994 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 3995 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
3996 | return 0; /* Group writable */ |
3997 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 3998 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 3999 | return 0; /* Owner writable */ |
86a5659e | 4000 | |
ea5a0917 | 4001 | return -1; /* Not writable */ |
86a5659e JB |
4002 | } |
4003 | #endif /* not VMS4_4 */ | |
4004 | #endif /* access */ | |
177c0ea7 | 4005 | |
86a5659e JB |
4006 | static char vtbuf[NAM$C_MAXRSS+1]; |
4007 | ||
4008 | /* translate a vms file spec to a unix path */ | |
4009 | char * | |
4010 | sys_translate_vms (vfile) | |
4011 | char * vfile; | |
4012 | { | |
4013 | char * p; | |
4014 | char * targ; | |
4015 | ||
4016 | if (!vfile) | |
4017 | return 0; | |
4018 | ||
4019 | targ = vtbuf; | |
4020 | ||
4021 | /* leading device or logical name is a root directory */ | |
4022 | if (p = strchr (vfile, ':')) | |
4023 | { | |
4024 | *targ++ = '/'; | |
4025 | while (vfile < p) | |
4026 | *targ++ = *vfile++; | |
4027 | vfile++; | |
4028 | *targ++ = '/'; | |
4029 | } | |
4030 | p = vfile; | |
4031 | if (*p == '[' || *p == '<') | |
4032 | { | |
4033 | while (*++vfile != *p + 2) | |
4034 | switch (*vfile) | |
4035 | { | |
4036 | case '.': | |
4037 | if (vfile[-1] == *p) | |
4038 | *targ++ = '.'; | |
4039 | *targ++ = '/'; | |
4040 | break; | |
4041 | ||
4042 | case '-': | |
4043 | *targ++ = '.'; | |
4044 | *targ++ = '.'; | |
4045 | break; | |
177c0ea7 | 4046 | |
86a5659e JB |
4047 | default: |
4048 | *targ++ = *vfile; | |
4049 | break; | |
4050 | } | |
4051 | vfile++; | |
4052 | *targ++ = '/'; | |
4053 | } | |
4054 | while (*vfile) | |
4055 | *targ++ = *vfile++; | |
4056 | ||
4057 | return vtbuf; | |
4058 | } | |
4059 | ||
4060 | static char utbuf[NAM$C_MAXRSS+1]; | |
4061 | ||
4062 | /* translate a unix path to a VMS file spec */ | |
4063 | char * | |
4064 | sys_translate_unix (ufile) | |
4065 | char * ufile; | |
4066 | { | |
4067 | int slash_seen = 0; | |
4068 | char *p; | |
4069 | char * targ; | |
4070 | ||
4071 | if (!ufile) | |
4072 | return 0; | |
4073 | ||
4074 | targ = utbuf; | |
4075 | ||
4076 | if (*ufile == '/') | |
4077 | { | |
4078 | ufile++; | |
4079 | } | |
4080 | ||
4081 | while (*ufile) | |
4082 | { | |
4083 | switch (*ufile) | |
4084 | { | |
4085 | case '/': | |
4086 | if (slash_seen) | |
4087 | if (index (&ufile[1], '/')) | |
4088 | *targ++ = '.'; | |
4089 | else | |
4090 | *targ++ = ']'; | |
4091 | else | |
4092 | { | |
4093 | *targ++ = ':'; | |
4094 | if (index (&ufile[1], '/')) | |
4095 | *targ++ = '['; | |
4096 | slash_seen = 1; | |
4097 | } | |
4098 | break; | |
4099 | ||
4100 | case '.': | |
4101 | if (strncmp (ufile, "./", 2) == 0) | |
4102 | { | |
4103 | if (!slash_seen) | |
4104 | { | |
4105 | *targ++ = '['; | |
4106 | slash_seen = 1; | |
4107 | } | |
4108 | ufile++; /* skip the dot */ | |
4109 | if (index (&ufile[1], '/')) | |
4110 | *targ++ = '.'; | |
4111 | else | |
4112 | *targ++ = ']'; | |
4113 | } | |
4114 | else if (strncmp (ufile, "../", 3) == 0) | |
4115 | { | |
4116 | if (!slash_seen) | |
4117 | { | |
4118 | *targ++ = '['; | |
4119 | slash_seen = 1; | |
4120 | } | |
4121 | *targ++ = '-'; | |
4122 | ufile += 2; /* skip the dots */ | |
4123 | if (index (&ufile[1], '/')) | |
4124 | *targ++ = '.'; | |
4125 | else | |
4126 | *targ++ = ']'; | |
4127 | } | |
4128 | else | |
4129 | *targ++ = *ufile; | |
4130 | break; | |
4131 | ||
4132 | default: | |
4133 | *targ++ = *ufile; | |
4134 | break; | |
4135 | } | |
4136 | ufile++; | |
4137 | } | |
4138 | *targ = '\0'; | |
177c0ea7 | 4139 | |
86a5659e JB |
4140 | return utbuf; |
4141 | } | |
4142 | ||
4143 | char * | |
4144 | getwd (pathname) | |
4145 | char *pathname; | |
4146 | { | |
f4a7e5bd | 4147 | char *ptr, *val; |
210b2b4f | 4148 | extern char *getcwd (); |
86a5659e | 4149 | |
210b2b4f JB |
4150 | #define MAXPATHLEN 1024 |
4151 | ||
9ac0d9e0 | 4152 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4153 | val = getcwd (ptr, MAXPATHLEN); |
4154 | if (val == 0) | |
4155 | { | |
4156 | xfree (ptr); | |
4157 | return val; | |
4158 | } | |
210b2b4f | 4159 | strcpy (pathname, ptr); |
9ac0d9e0 | 4160 | xfree (ptr); |
177c0ea7 | 4161 | |
210b2b4f | 4162 | return pathname; |
86a5659e JB |
4163 | } |
4164 | ||
dfcf069d | 4165 | int |
86a5659e JB |
4166 | getppid () |
4167 | { | |
4168 | long item_code = JPI$_OWNER; | |
4169 | unsigned long parent_id; | |
4170 | int status; | |
4171 | ||
4172 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4173 | { | |
4174 | errno = EVMSERR; | |
4175 | vaxc$errno = status; | |
4176 | return -1; | |
4177 | } | |
4178 | return parent_id; | |
4179 | } | |
4180 | ||
4181 | #undef getuid | |
4182 | unsigned | |
4183 | sys_getuid () | |
4184 | { | |
4185 | return (getgid () << 16) | getuid (); | |
4186 | } | |
4187 | ||
68c45bf0 | 4188 | #undef read |
86a5659e JB |
4189 | int |
4190 | sys_read (fildes, buf, nbyte) | |
4191 | int fildes; | |
4192 | char *buf; | |
4193 | unsigned int nbyte; | |
4194 | { | |
4195 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4196 | } | |
4197 | ||
4198 | #if 0 | |
4199 | int | |
4200 | sys_write (fildes, buf, nbyte) | |
4201 | int fildes; | |
4202 | char *buf; | |
4203 | unsigned int nbyte; | |
4204 | { | |
4205 | register int nwrote, rtnval = 0; | |
4206 | ||
4207 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4208 | nbyte -= nwrote; | |
4209 | buf += nwrote; | |
4210 | rtnval += nwrote; | |
4211 | } | |
4212 | if (nwrote < 0) | |
4213 | return rtnval ? rtnval : -1; | |
4214 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4215 | return rtnval ? rtnval : -1; | |
4216 | return (rtnval + nwrote); | |
4217 | } | |
4218 | #endif /* 0 */ | |
4219 | ||
4220 | /* | |
4221 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4222 | * end with a newline (carriage return) character, and if they | |
4223 | * don't it adds one (nice of it isn't it!) | |
4224 | * | |
4225 | * Thus we do this stupidity below. | |
4226 | */ | |
4227 | ||
68c45bf0 | 4228 | #undef write |
86a5659e JB |
4229 | int |
4230 | sys_write (fildes, buf, nbytes) | |
4231 | int fildes; | |
4232 | char *buf; | |
4233 | unsigned int nbytes; | |
4234 | { | |
4235 | register char *p; | |
4236 | register char *e; | |
23b0668c JB |
4237 | int sum = 0; |
4238 | struct stat st; | |
4239 | ||
4240 | fstat (fildes, &st); | |
86a5659e | 4241 | p = buf; |
86a5659e JB |
4242 | while (nbytes > 0) |
4243 | { | |
23b0668c JB |
4244 | int len, retval; |
4245 | ||
4246 | /* Handle fixed-length files with carriage control. */ | |
4247 | if (st.st_fab_rfm == FAB$C_FIX | |
4248 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4249 | { | |
4250 | len = st.st_fab_mrs; | |
4251 | retval = write (fildes, p, min (len, nbytes)); | |
4252 | if (retval != len) | |
4253 | return -1; | |
4254 | retval++; /* This skips the implied carriage control */ | |
4255 | } | |
4256 | else | |
4257 | { | |
4258 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4259 | while (*e != '\n' && e > p) e--; | |
4260 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4261 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4262 | len = e + 1 - p; | |
4263 | retval = write (fildes, p, len); | |
4264 | if (retval != len) | |
4265 | return -1; | |
4266 | } | |
4267 | p += retval; | |
4268 | sum += retval; | |
86a5659e JB |
4269 | nbytes -= retval; |
4270 | } | |
4271 | return sum; | |
4272 | } | |
4273 | ||
4274 | /* Create file NEW copying its attributes from file OLD. If | |
4275 | OLD is 0 or does not exist, create based on the value of | |
4276 | vms_stmlf_recfm. */ | |
4277 | ||
4278 | /* Protection value the file should ultimately have. | |
4279 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4280 | static unsigned short int fab_final_pro; | |
4281 | ||
4282 | int | |
4283 | creat_copy_attrs (old, new) | |
4284 | char *old, *new; | |
4285 | { | |
4286 | struct FAB fab = cc$rms_fab; | |
4287 | struct XABPRO xabpro; | |
4288 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4289 | extern int vms_stmlf_recfm; | |
4290 | ||
4291 | if (old) | |
4292 | { | |
4293 | fab.fab$b_fac = FAB$M_GET; | |
4294 | fab.fab$l_fna = old; | |
4295 | fab.fab$b_fns = strlen (old); | |
4296 | fab.fab$l_xab = (char *) &xabpro; | |
4297 | xabpro = cc$rms_xabpro; | |
4298 | xabpro.xab$l_aclbuf = aclbuf; | |
4299 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4300 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4301 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4302 | { |
986ffb24 | 4303 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4304 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4305 | if (xabpro.xab$w_acllen > 0) | |
4306 | { | |
4307 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4308 | /* If the acl buffer was too short, redo open with longer one. | |
4309 | Wouldn't need to do this if there were some system imposed | |
4310 | limit on the size of an ACL, but I can't find any such. */ | |
4311 | { | |
4312 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4313 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4314 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4315 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4316 | else |
4317 | old = 0; | |
4318 | } | |
4319 | } | |
4320 | else | |
4321 | xabpro.xab$l_aclbuf = 0; | |
4322 | } | |
4323 | else | |
4324 | old = 0; | |
4325 | } | |
4326 | fab.fab$l_fna = new; | |
4327 | fab.fab$b_fns = strlen (new); | |
4328 | if (!old) | |
4329 | { | |
4330 | fab.fab$l_xab = 0; | |
4331 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4332 | fab.fab$b_rat = FAB$M_CR; | |
4333 | } | |
4334 | ||
4335 | /* Set the file protections such that we will be able to manipulate | |
4336 | this file. Once we are done writing and renaming it, we will set | |
4337 | the protections back. */ | |
4338 | if (old) | |
4339 | fab_final_pro = xabpro.xab$w_pro; | |
4340 | else | |
986ffb24 | 4341 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4342 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4343 | ||
4344 | /* Create the new file with either default attrs or attrs copied | |
4345 | from old file. */ | |
4346 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4347 | return -1; | |
986ffb24 | 4348 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4349 | /* As this is a "replacement" for creat, return a file descriptor |
4350 | opened for writing. */ | |
4351 | return open (new, O_WRONLY); | |
4352 | } | |
4353 | ||
4354 | #ifdef creat | |
4355 | #undef creat | |
4356 | #include <varargs.h> | |
4357 | #ifdef __GNUC__ | |
4358 | #ifndef va_count | |
4359 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4360 | #endif | |
4361 | #endif | |
4362 | ||
dfcf069d | 4363 | int |
86a5659e JB |
4364 | sys_creat (va_alist) |
4365 | va_dcl | |
4366 | { | |
eb8c3be9 | 4367 | va_list list_incrementer; |
86a5659e JB |
4368 | char *name; |
4369 | int mode; | |
4370 | int rfd; /* related file descriptor */ | |
4371 | int fd; /* Our new file descriptor */ | |
4372 | int count; | |
4373 | struct stat st_buf; | |
4374 | char rfm[12]; | |
4375 | char rat[15]; | |
4376 | char mrs[13]; | |
4377 | char fsz[13]; | |
4378 | extern int vms_stmlf_recfm; | |
4379 | ||
4380 | va_count (count); | |
eb8c3be9 JB |
4381 | va_start (list_incrementer); |
4382 | name = va_arg (list_incrementer, char *); | |
4383 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4384 | if (count > 2) |
eb8c3be9 JB |
4385 | rfd = va_arg (list_incrementer, int); |
4386 | va_end (list_incrementer); | |
86a5659e JB |
4387 | if (count > 2) |
4388 | { | |
4389 | /* Use information from the related file descriptor to set record | |
4390 | format of the newly created file. */ | |
4391 | fstat (rfd, &st_buf); | |
4392 | switch (st_buf.st_fab_rfm) | |
4393 | { | |
4394 | case FAB$C_FIX: | |
4395 | strcpy (rfm, "rfm = fix"); | |
4396 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4397 | strcpy (rat, "rat = "); | |
4398 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4399 | strcat (rat, "cr"); | |
4400 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4401 | strcat (rat, "ftn"); | |
4402 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4403 | strcat (rat, "prn"); | |
4404 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4405 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4406 | strcat (rat, ", blk"); | |
4407 | else | |
4408 | strcat (rat, "blk"); | |
4409 | return creat (name, 0, rfm, rat, mrs); | |
4410 | ||
4411 | case FAB$C_VFC: | |
4412 | strcpy (rfm, "rfm = vfc"); | |
4413 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4414 | strcpy (rat, "rat = "); | |
4415 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4416 | strcat (rat, "cr"); | |
4417 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4418 | strcat (rat, "ftn"); | |
4419 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4420 | strcat (rat, "prn"); | |
4421 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4422 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4423 | strcat (rat, ", blk"); | |
4424 | else | |
4425 | strcat (rat, "blk"); | |
4426 | return creat (name, 0, rfm, rat, fsz); | |
4427 | ||
4428 | case FAB$C_STM: | |
4429 | strcpy (rfm, "rfm = stm"); | |
4430 | break; | |
4431 | ||
4432 | case FAB$C_STMCR: | |
4433 | strcpy (rfm, "rfm = stmcr"); | |
4434 | break; | |
4435 | ||
4436 | case FAB$C_STMLF: | |
4437 | strcpy (rfm, "rfm = stmlf"); | |
4438 | break; | |
4439 | ||
4440 | case FAB$C_UDF: | |
4441 | strcpy (rfm, "rfm = udf"); | |
4442 | break; | |
4443 | ||
4444 | case FAB$C_VAR: | |
4445 | strcpy (rfm, "rfm = var"); | |
4446 | break; | |
4447 | } | |
4448 | strcpy (rat, "rat = "); | |
4449 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4450 | strcat (rat, "cr"); | |
4451 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4452 | strcat (rat, "ftn"); | |
4453 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4454 | strcat (rat, "prn"); | |
4455 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4456 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4457 | strcat (rat, ", blk"); | |
4458 | else | |
4459 | strcat (rat, "blk"); | |
4460 | } | |
4461 | else | |
4462 | { | |
4463 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4464 | strcpy (rat, "rat=cr"); | |
4465 | } | |
4466 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4467 | mode 0 to get the user's default protection. */ | |
4468 | fd = creat (name, 0, rfm, rat); | |
4469 | if (fd < 0 && errno == EEXIST) | |
4470 | { | |
4471 | if (unlink (name) < 0) | |
4472 | report_file_error ("delete", build_string (name)); | |
4473 | fd = creat (name, 0, rfm, rat); | |
4474 | } | |
4475 | return fd; | |
4476 | } | |
4477 | #endif /* creat */ | |
4478 | ||
4479 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
dfcf069d | 4480 | int |
86a5659e JB |
4481 | sys_fwrite (ptr, size, num, fp) |
4482 | register char * ptr; | |
4483 | FILE * fp; | |
4484 | { | |
4485 | register int tot = num * size; | |
4486 | ||
4487 | while (tot--) | |
4488 | fputc (*ptr++, fp); | |
dfcf069d | 4489 | return num; |
86a5659e JB |
4490 | } |
4491 | ||
4492 | /* | |
4493 | * The VMS C library routine creat actually creates a new version of an | |
4494 | * existing file rather than truncating the old version. There are times | |
4495 | * when this is not the desired behavior, for instance, when writing an | |
4496 | * auto save file (you only want one version), or when you don't have | |
4497 | * write permission in the directory containing the file (but the file | |
177c0ea7 | 4498 | * itself is writable). Hence this routine, which is equivalent to |
86a5659e JB |
4499 | * "close (creat (fn, 0));" on Unix if fn already exists. |
4500 | */ | |
4501 | int | |
4502 | vms_truncate (fn) | |
4503 | char *fn; | |
4504 | { | |
4505 | struct FAB xfab = cc$rms_fab; | |
4506 | struct RAB xrab = cc$rms_rab; | |
4507 | int status; | |
4508 | ||
4509 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4510 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4511 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4512 | xfab.fab$l_fna = fn; | |
4513 | xfab.fab$b_fns = strlen (fn); | |
4514 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4515 | xfab.fab$b_dns = 2; | |
4516 | xrab.rab$l_fab = &xfab; | |
4517 | ||
4518 | /* This gibberish opens the file, positions to the first record, and | |
4519 | deletes all records from there until the end of file. */ | |
986ffb24 | 4520 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4521 | { |
986ffb24 JB |
4522 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4523 | (SYS$FIND (&xrab) & 01) == 01 && | |
4524 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4525 | status = 0; |
4526 | else | |
4527 | status = -1; | |
4528 | } | |
4529 | else | |
4530 | status = -1; | |
986ffb24 | 4531 | SYS$CLOSE (&xfab); |
86a5659e JB |
4532 | return status; |
4533 | } | |
4534 | ||
4535 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4536 | SYSPRV or a readable SYSUAF.DAT. */ | |
4537 | ||
4538 | #ifdef READ_SYSUAF | |
4539 | /* | |
4540 | * getuaf.c | |
4541 | * | |
4542 | * Routine to read the VMS User Authorization File and return | |
4543 | * a specific user's record. | |
4544 | */ | |
4545 | ||
4546 | static struct UAF retuaf; | |
4547 | ||
4548 | struct UAF * | |
4549 | get_uaf_name (uname) | |
4550 | char * uname; | |
4551 | { | |
4552 | register status; | |
4553 | struct FAB uaf_fab; | |
4554 | struct RAB uaf_rab; | |
177c0ea7 | 4555 | |
86a5659e JB |
4556 | uaf_fab = cc$rms_fab; |
4557 | uaf_rab = cc$rms_rab; | |
4558 | /* initialize fab fields */ | |
4559 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4560 | uaf_fab.fab$b_fns = 21; | |
4561 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4562 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4563 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4564 | /* initialize rab fields */ | |
4565 | uaf_rab.rab$l_fab = &uaf_fab; | |
4566 | /* open the User Authorization File */ | |
986ffb24 | 4567 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4568 | if (!(status&1)) |
4569 | { | |
4570 | errno = EVMSERR; | |
4571 | vaxc$errno = status; | |
4572 | return 0; | |
4573 | } | |
986ffb24 | 4574 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4575 | if (!(status&1)) |
4576 | { | |
4577 | errno = EVMSERR; | |
4578 | vaxc$errno = status; | |
4579 | return 0; | |
4580 | } | |
4581 | /* read the requested record - index is in uname */ | |
4582 | uaf_rab.rab$l_kbf = uname; | |
4583 | uaf_rab.rab$b_ksz = strlen (uname); | |
4584 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4585 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4586 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4587 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4588 | if (!(status&1)) |
4589 | { | |
4590 | errno = EVMSERR; | |
4591 | vaxc$errno = status; | |
4592 | return 0; | |
4593 | } | |
4594 | /* close the User Authorization File */ | |
986ffb24 | 4595 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4596 | if (!(status&1)) |
4597 | { | |
4598 | errno = EVMSERR; | |
4599 | vaxc$errno = status; | |
4600 | return 0; | |
4601 | } | |
986ffb24 | 4602 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4603 | if (!(status&1)) |
4604 | { | |
4605 | errno = EVMSERR; | |
4606 | vaxc$errno = status; | |
4607 | return 0; | |
4608 | } | |
4609 | return &retuaf; | |
4610 | } | |
4611 | ||
4612 | struct UAF * | |
4613 | get_uaf_uic (uic) | |
4614 | unsigned long uic; | |
4615 | { | |
4616 | register status; | |
4617 | struct FAB uaf_fab; | |
4618 | struct RAB uaf_rab; | |
177c0ea7 | 4619 | |
86a5659e JB |
4620 | uaf_fab = cc$rms_fab; |
4621 | uaf_rab = cc$rms_rab; | |
4622 | /* initialize fab fields */ | |
4623 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4624 | uaf_fab.fab$b_fns = 21; | |
4625 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4626 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4627 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4628 | /* initialize rab fields */ | |
4629 | uaf_rab.rab$l_fab = &uaf_fab; | |
4630 | /* open the User Authorization File */ | |
986ffb24 | 4631 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4632 | if (!(status&1)) |
4633 | { | |
4634 | errno = EVMSERR; | |
4635 | vaxc$errno = status; | |
4636 | return 0; | |
4637 | } | |
986ffb24 | 4638 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4639 | if (!(status&1)) |
4640 | { | |
4641 | errno = EVMSERR; | |
4642 | vaxc$errno = status; | |
4643 | return 0; | |
4644 | } | |
4645 | /* read the requested record - index is in uic */ | |
4646 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4647 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4648 | uaf_rab.rab$b_ksz = sizeof uic; | |
4649 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4650 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4651 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4652 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4653 | if (!(status&1)) |
4654 | { | |
4655 | errno = EVMSERR; | |
4656 | vaxc$errno = status; | |
4657 | return 0; | |
4658 | } | |
4659 | /* close the User Authorization File */ | |
986ffb24 | 4660 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4661 | if (!(status&1)) |
4662 | { | |
4663 | errno = EVMSERR; | |
4664 | vaxc$errno = status; | |
4665 | return 0; | |
4666 | } | |
986ffb24 | 4667 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4668 | if (!(status&1)) |
4669 | { | |
4670 | errno = EVMSERR; | |
4671 | vaxc$errno = status; | |
4672 | return 0; | |
4673 | } | |
4674 | return &retuaf; | |
4675 | } | |
4676 | ||
4677 | static struct passwd retpw; | |
4678 | ||
4679 | struct passwd * | |
4680 | cnv_uaf_pw (up) | |
4681 | struct UAF * up; | |
4682 | { | |
4683 | char * ptr; | |
4684 | ||
4685 | /* copy these out first because if the username is 32 chars, the next | |
4686 | section will overwrite the first byte of the UIC */ | |
4687 | retpw.pw_uid = up->uaf$w_mem; | |
4688 | retpw.pw_gid = up->uaf$w_grp; | |
4689 | ||
ea5a0917 | 4690 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4691 | byte beyond the end of the field, but what the heck... */ |
4692 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4693 | while (ptr[-1] == ' ') | |
4694 | ptr--; | |
4695 | *ptr = '\0'; | |
4696 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4697 | ||
4698 | /* the rest of these are counted ascii strings */ | |
4699 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4700 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4701 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4702 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4703 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4704 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4705 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4706 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4707 | ||
4708 | return &retpw; | |
4709 | } | |
4710 | #else /* not READ_SYSUAF */ | |
4711 | static struct passwd retpw; | |
4712 | #endif /* not READ_SYSUAF */ | |
4713 | ||
4714 | struct passwd * | |
4715 | getpwnam (name) | |
4716 | char * name; | |
4717 | { | |
4718 | #ifdef READ_SYSUAF | |
4719 | struct UAF *up; | |
4720 | #else | |
4721 | char * user; | |
4722 | char * dir; | |
4723 | unsigned char * full; | |
4724 | #endif /* READ_SYSUAF */ | |
4725 | char *ptr = name; | |
4726 | ||
4727 | while (*ptr) | |
4728 | { | |
4729 | if ('a' <= *ptr && *ptr <= 'z') | |
4730 | *ptr -= 040; | |
4731 | ptr++; | |
4732 | } | |
4733 | #ifdef READ_SYSUAF | |
4734 | if (!(up = get_uaf_name (name))) | |
4735 | return 0; | |
4736 | return cnv_uaf_pw (up); | |
4737 | #else | |
4738 | if (strcmp (name, getenv ("USER")) == 0) | |
4739 | { | |
4740 | retpw.pw_uid = getuid (); | |
4741 | retpw.pw_gid = getgid (); | |
4742 | strcpy (retpw.pw_name, name); | |
4743 | if (full = egetenv ("FULLNAME")) | |
4744 | strcpy (retpw.pw_gecos, full); | |
4745 | else | |
4746 | *retpw.pw_gecos = '\0'; | |
4747 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4748 | *retpw.pw_shell = '\0'; | |
4749 | return &retpw; | |
4750 | } | |
4751 | else | |
4752 | return 0; | |
4753 | #endif /* not READ_SYSUAF */ | |
4754 | } | |
4755 | ||
4756 | struct passwd * | |
4757 | getpwuid (uid) | |
4758 | unsigned long uid; | |
4759 | { | |
4760 | #ifdef READ_SYSUAF | |
4761 | struct UAF * up; | |
4762 | ||
4763 | if (!(up = get_uaf_uic (uid))) | |
4764 | return 0; | |
4765 | return cnv_uaf_pw (up); | |
4766 | #else | |
4767 | if (uid == sys_getuid ()) | |
4768 | return getpwnam (egetenv ("USER")); | |
4769 | else | |
4770 | return 0; | |
4771 | #endif /* not READ_SYSUAF */ | |
4772 | } | |
4773 | ||
4774 | /* return total address space available to the current process. This is | |
4775 | the sum of the current p0 size, p1 size and free page table entries | |
4776 | available. */ | |
dfcf069d | 4777 | int |
86a5659e JB |
4778 | vlimit () |
4779 | { | |
4780 | int item_code; | |
4781 | unsigned long free_pages; | |
4782 | unsigned long frep0va; | |
4783 | unsigned long frep1va; | |
4784 | register status; | |
4785 | ||
4786 | item_code = JPI$_FREPTECNT; | |
4787 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4788 | { | |
4789 | errno = EVMSERR; | |
4790 | vaxc$errno = status; | |
4791 | return -1; | |
4792 | } | |
4793 | free_pages *= 512; | |
4794 | ||
4795 | item_code = JPI$_FREP0VA; | |
4796 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4797 | { | |
4798 | errno = EVMSERR; | |
4799 | vaxc$errno = status; | |
4800 | return -1; | |
4801 | } | |
4802 | item_code = JPI$_FREP1VA; | |
4803 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4804 | { | |
4805 | errno = EVMSERR; | |
4806 | vaxc$errno = status; | |
4807 | return -1; | |
4808 | } | |
4809 | ||
4810 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4811 | } | |
4812 | ||
dfcf069d | 4813 | int |
86a5659e JB |
4814 | define_logical_name (varname, string) |
4815 | char *varname; | |
4816 | char *string; | |
4817 | { | |
4818 | struct dsc$descriptor_s strdsc = | |
4819 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4820 | struct dsc$descriptor_s envdsc = | |
4821 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4822 | struct dsc$descriptor_s lnmdsc = | |
4823 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4824 | ||
4825 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4826 | } | |
4827 | ||
dfcf069d | 4828 | int |
86a5659e JB |
4829 | delete_logical_name (varname) |
4830 | char *varname; | |
4831 | { | |
4832 | struct dsc$descriptor_s envdsc = | |
4833 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4834 | struct dsc$descriptor_s lnmdsc = | |
4835 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4836 | ||
4837 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4838 | } | |
4839 | ||
dfcf069d | 4840 | int |
86a5659e | 4841 | ulimit () |
dfcf069d AS |
4842 | { |
4843 | return 0; | |
4844 | } | |
86a5659e | 4845 | |
dfcf069d | 4846 | int |
86a5659e | 4847 | setpgrp () |
dfcf069d AS |
4848 | { |
4849 | return 0; | |
4850 | } | |
86a5659e | 4851 | |
dfcf069d | 4852 | int |
86a5659e JB |
4853 | execvp () |
4854 | { | |
4855 | error ("execvp system call not implemented"); | |
dfcf069d | 4856 | return -1; |
86a5659e JB |
4857 | } |
4858 | ||
4859 | int | |
4860 | rename (from, to) | |
4861 | char *from, *to; | |
4862 | { | |
4863 | int status; | |
4864 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4865 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4866 | char from_esn[NAM$C_MAXRSS]; | |
4867 | char to_esn[NAM$C_MAXRSS]; | |
4868 | ||
4869 | from_fab.fab$l_fna = from; | |
4870 | from_fab.fab$b_fns = strlen (from); | |
4871 | from_fab.fab$l_nam = &from_nam; | |
4872 | from_fab.fab$l_fop = FAB$M_NAM; | |
4873 | ||
4874 | from_nam.nam$l_esa = from_esn; | |
4875 | from_nam.nam$b_ess = sizeof from_esn; | |
4876 | ||
4877 | to_fab.fab$l_fna = to; | |
4878 | to_fab.fab$b_fns = strlen (to); | |
4879 | to_fab.fab$l_nam = &to_nam; | |
4880 | to_fab.fab$l_fop = FAB$M_NAM; | |
4881 | ||
4882 | to_nam.nam$l_esa = to_esn; | |
4883 | to_nam.nam$b_ess = sizeof to_esn; | |
4884 | ||
4885 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4886 | ||
4887 | if (status & 1) | |
4888 | return 0; | |
4889 | else | |
4890 | { | |
4891 | if (status == RMS$_DEV) | |
4892 | errno = EXDEV; | |
4893 | else | |
4894 | errno = EVMSERR; | |
4895 | vaxc$errno = status; | |
4896 | return -1; | |
4897 | } | |
4898 | } | |
4899 | ||
4900 | /* This function renames a file like `rename', but it strips | |
4901 | the version number from the "to" filename, such that the "to" file is | |
4902 | will always be a new version. It also sets the file protection once it is | |
4903 | finished. The protection that we will use is stored in fab_final_pro, | |
4904 | and was set when we did a creat_copy_attrs to create the file that we | |
4905 | are renaming. | |
4906 | ||
4907 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4908 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4909 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4910 | the W and D bits together. */ | |
4911 | ||
177c0ea7 | 4912 | |
86a5659e JB |
4913 | static struct fibdef fib; /* We need this initialized to zero */ |
4914 | char vms_file_written[NAM$C_MAXRSS]; | |
4915 | ||
4916 | int | |
4917 | rename_sans_version (from,to) | |
4918 | char *from, *to; | |
4919 | { | |
4920 | short int chan; | |
4921 | int stat; | |
4922 | short int iosb[4]; | |
4923 | int status; | |
4924 | struct FAB to_fab = cc$rms_fab; | |
4925 | struct NAM to_nam = cc$rms_nam; | |
4926 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4927 | struct dsc$descriptor fib_attr[2] | |
4928 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4929 | char to_esn[NAM$C_MAXRSS]; | |
4930 | ||
4931 | $DESCRIPTOR (disk,to_esn); | |
4932 | ||
4933 | to_fab.fab$l_fna = to; | |
4934 | to_fab.fab$b_fns = strlen (to); | |
4935 | to_fab.fab$l_nam = &to_nam; | |
4936 | to_fab.fab$l_fop = FAB$M_NAM; | |
4937 | ||
4938 | to_nam.nam$l_esa = to_esn; | |
4939 | to_nam.nam$b_ess = sizeof to_esn; | |
4940 | ||
4941 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4942 | ||
4943 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4944 | *(to_nam.nam$l_ver) = '\0'; | |
4945 | ||
4946 | stat = rename (from, to_esn); | |
4947 | if (stat < 0) | |
4948 | return stat; | |
4949 | ||
4950 | strcpy (vms_file_written, to_esn); | |
4951 | ||
4952 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4953 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4954 | ||
4955 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4956 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4957 | |
4958 | /* Copy these fields into the fib */ | |
4959 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4960 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4961 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4962 | ||
986ffb24 | 4963 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4964 | |
986ffb24 | 4965 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4966 | if (!stat) |
986ffb24 JB |
4967 | LIB$SIGNAL (stat); |
4968 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4969 | 0, 0, 0, &fib_attr, 0); |
4970 | if (!stat) | |
986ffb24 JB |
4971 | LIB$SIGNAL (stat); |
4972 | stat = SYS$DASSGN (chan); | |
86a5659e | 4973 | if (!stat) |
986ffb24 | 4974 | LIB$SIGNAL (stat); |
0137dbf7 | 4975 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4976 | return 0; |
4977 | } | |
4978 | ||
dfcf069d | 4979 | int |
86a5659e JB |
4980 | link (file, new) |
4981 | char * file, * new; | |
4982 | { | |
4983 | register status; | |
4984 | struct FAB fab; | |
4985 | struct NAM nam; | |
4986 | unsigned short fid[3]; | |
4987 | char esa[NAM$C_MAXRSS]; | |
4988 | ||
4989 | fab = cc$rms_fab; | |
4990 | fab.fab$l_fop = FAB$M_OFP; | |
4991 | fab.fab$l_fna = file; | |
4992 | fab.fab$b_fns = strlen (file); | |
4993 | fab.fab$l_nam = &nam; | |
4994 | ||
4995 | nam = cc$rms_nam; | |
4996 | nam.nam$l_esa = esa; | |
4997 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4998 | ||
4999 | status = SYS$PARSE (&fab); | |
5000 | if ((status & 1) == 0) | |
5001 | { | |
5002 | errno = EVMSERR; | |
5003 | vaxc$errno = status; | |
5004 | return -1; | |
5005 | } | |
5006 | status = SYS$SEARCH (&fab); | |
5007 | if ((status & 1) == 0) | |
5008 | { | |
5009 | errno = EVMSERR; | |
5010 | vaxc$errno = status; | |
5011 | return -1; | |
5012 | } | |
5013 | ||
5014 | fid[0] = nam.nam$w_fid[0]; | |
5015 | fid[1] = nam.nam$w_fid[1]; | |
5016 | fid[2] = nam.nam$w_fid[2]; | |
5017 | ||
5018 | fab.fab$l_fna = new; | |
5019 | fab.fab$b_fns = strlen (new); | |
5020 | ||
5021 | status = SYS$PARSE (&fab); | |
5022 | if ((status & 1) == 0) | |
5023 | { | |
5024 | errno = EVMSERR; | |
5025 | vaxc$errno = status; | |
5026 | return -1; | |
5027 | } | |
5028 | ||
5029 | nam.nam$w_fid[0] = fid[0]; | |
5030 | nam.nam$w_fid[1] = fid[1]; | |
5031 | nam.nam$w_fid[2] = fid[2]; | |
5032 | ||
5033 | nam.nam$l_esa = nam.nam$l_name; | |
5034 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
5035 | ||
5036 | status = SYS$ENTER (&fab); | |
5037 | if ((status & 1) == 0) | |
5038 | { | |
5039 | errno = EVMSERR; | |
5040 | vaxc$errno = status; | |
5041 | return -1; | |
5042 | } | |
5043 | ||
5044 | return 0; | |
5045 | } | |
5046 | ||
dfcf069d | 5047 | void |
86a5659e JB |
5048 | croak (badfunc) |
5049 | char *badfunc; | |
5050 | { | |
5051 | printf ("%s not yet implemented\r\n", badfunc); | |
5052 | reset_sys_modes (); | |
5053 | exit (1); | |
5054 | } | |
5055 | ||
5056 | long | |
5057 | random () | |
5058 | { | |
5059 | /* Arrange to return a range centered on zero. */ | |
5060 | return rand () - (1 << 30); | |
5061 | } | |
5062 | ||
dfcf069d | 5063 | void |
86a5659e JB |
5064 | srandom (seed) |
5065 | { | |
5066 | srand (seed); | |
5067 | } | |
5068 | #endif /* VMS */ | |
5069 | \f | |
b97ab886 | 5070 | #ifdef AIXHFT |
86a5659e JB |
5071 | |
5072 | /* Called from init_sys_modes. */ | |
dfcf069d | 5073 | void |
86a5659e JB |
5074 | hft_init () |
5075 | { | |
5076 | int junk; | |
5077 | ||
5078 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5079 | if we are on an HFT by trying to get an HFT error code. If this | |
177c0ea7 | 5080 | call fails, we're not on an HFT. */ |
86a5659e JB |
5081 | #ifdef IBMR2AIX |
5082 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5083 | return; | |
5084 | #else /* not IBMR2AIX */ | |
5085 | if (ioctl (0, HFQEIO, 0) < 0) | |
5086 | return; | |
5087 | #endif /* not IBMR2AIX */ | |
5088 | ||
5089 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5090 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5091 | there's no way to determine the old mapping, so in reset_sys_modes | |
5092 | we need to assume that the normal map had been present. Of course, this | |
5093 | code also doesn't help if on a terminal emulator which doesn't understand | |
c4ea52a6 | 5094 | HFT VTD's. */ |
86a5659e JB |
5095 | { |
5096 | struct hfbuf buf; | |
5097 | struct hfkeymap keymap; | |
5098 | ||
5099 | buf.hf_bufp = (char *)&keymap; | |
5100 | buf.hf_buflen = sizeof (keymap); | |
5101 | keymap.hf_nkeys = 2; | |
5102 | keymap.hfkey[0].hf_kpos = 15; | |
5103 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5104 | #ifdef IBMR2AIX | |
5105 | keymap.hfkey[0].hf_keyidh = '<'; | |
5106 | #else /* not IBMR2AIX */ | |
5107 | keymap.hfkey[0].hf_page = '<'; | |
5108 | #endif /* not IBMR2AIX */ | |
5109 | keymap.hfkey[0].hf_char = 127; | |
5110 | keymap.hfkey[1].hf_kpos = 15; | |
5111 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5112 | #ifdef IBMR2AIX | |
5113 | keymap.hfkey[1].hf_keyidh = '<'; | |
5114 | #else /* not IBMR2AIX */ | |
5115 | keymap.hfkey[1].hf_page = '<'; | |
5116 | #endif /* not IBMR2AIX */ | |
5117 | keymap.hfkey[1].hf_char = 127; | |
5118 | hftctl (0, HFSKBD, &buf); | |
5119 | } | |
5120 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
5121 | at times. */ | |
5122 | line_ins_del_ok = char_ins_del_ok = 0; | |
5123 | } | |
5124 | ||
c4ea52a6 | 5125 | /* Reset the rubout key to backspace. */ |
86a5659e | 5126 | |
dfcf069d | 5127 | void |
86a5659e JB |
5128 | hft_reset () |
5129 | { | |
5130 | struct hfbuf buf; | |
5131 | struct hfkeymap keymap; | |
5132 | int junk; | |
5133 | ||
5134 | #ifdef IBMR2AIX | |
5135 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5136 | return; | |
5137 | #else /* not IBMR2AIX */ | |
5138 | if (ioctl (0, HFQEIO, 0) < 0) | |
5139 | return; | |
5140 | #endif /* not IBMR2AIX */ | |
5141 | ||
5142 | buf.hf_bufp = (char *)&keymap; | |
5143 | buf.hf_buflen = sizeof (keymap); | |
5144 | keymap.hf_nkeys = 2; | |
5145 | keymap.hfkey[0].hf_kpos = 15; | |
5146 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5147 | #ifdef IBMR2AIX | |
5148 | keymap.hfkey[0].hf_keyidh = '<'; | |
5149 | #else /* not IBMR2AIX */ | |
5150 | keymap.hfkey[0].hf_page = '<'; | |
5151 | #endif /* not IBMR2AIX */ | |
5152 | keymap.hfkey[0].hf_char = 8; | |
5153 | keymap.hfkey[1].hf_kpos = 15; | |
5154 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5155 | #ifdef IBMR2AIX | |
5156 | keymap.hfkey[1].hf_keyidh = '<'; | |
5157 | #else /* not IBMR2AIX */ | |
5158 | keymap.hfkey[1].hf_page = '<'; | |
5159 | #endif /* not IBMR2AIX */ | |
5160 | keymap.hfkey[1].hf_char = 8; | |
5161 | hftctl (0, HFSKBD, &buf); | |
5162 | } | |
5163 | ||
b97ab886 | 5164 | #endif /* AIXHFT */ |
c238be24 RS |
5165 | |
5166 | #ifdef USE_DL_STUBS | |
5167 | ||
5168 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5169 | X11 libraries may refer to these functions but (we hope) do not | |
5170 | actually call them. */ | |
5171 | ||
5172 | void * | |
5173 | dlopen () | |
5174 | { | |
5175 | return 0; | |
5176 | } | |
5177 | ||
5178 | void * | |
5179 | dlsym () | |
5180 | { | |
5181 | return 0; | |
5182 | } | |
5183 | ||
5184 | int | |
5185 | dlclose () | |
5186 | { | |
5187 | return -1; | |
5188 | } | |
5189 | ||
5190 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5191 | \f |
5192 | #ifndef BSTRING | |
5193 | ||
5194 | #ifndef bzero | |
5195 | ||
5196 | void | |
5197 | bzero (b, length) | |
5198 | register char *b; | |
5199 | register int length; | |
5200 | { | |
5201 | #ifdef VMS | |
5202 | short zero = 0; | |
5203 | long max_str = 65535; | |
5204 | ||
5205 | while (length > max_str) { | |
5206 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5207 | length -= max_str; | |
5208 | b += max_str; | |
5209 | } | |
5210 | max_str = length; | |
5211 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5212 | #else | |
5213 | while (length-- > 0) | |
5214 | *b++ = 0; | |
5215 | #endif /* not VMS */ | |
5216 | } | |
5217 | ||
5218 | #endif /* no bzero */ | |
5219 | #endif /* BSTRING */ | |
5220 | ||
c7f93f28 | 5221 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5222 | #undef bcopy |
5223 | ||
5224 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5225 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5226 | bcopy (b1, b2, length) | |
5227 | register char *b1; | |
5228 | register char *b2; | |
5229 | register int length; | |
5230 | { | |
5231 | #ifdef VMS | |
5232 | long max_str = 65535; | |
5233 | ||
5234 | while (length > max_str) { | |
5235 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5236 | length -= max_str; | |
5237 | b1 += max_str; | |
5238 | b2 += max_str; | |
5239 | } | |
5240 | max_str = length; | |
5241 | (void) LIB$MOVC3 (&length, b1, b2); | |
5242 | #else | |
5243 | while (length-- > 0) | |
5244 | *b2++ = *b1++; | |
5245 | #endif /* not VMS */ | |
5246 | } | |
dfcf069d | 5247 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ |
51417996 | 5248 | |
c7f93f28 | 5249 | #ifndef BSTRING |
51417996 RS |
5250 | #ifndef bcmp |
5251 | int | |
5252 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5253 | register char *b1; | |
5254 | register char *b2; | |
5255 | register int length; | |
5256 | { | |
5257 | #ifdef VMS | |
5258 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5259 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5260 | ||
5261 | return STR$COMPARE (&src1, &src2); | |
5262 | #else | |
5263 | while (length-- > 0) | |
5264 | if (*b1++ != *b2++) | |
5265 | return 1; | |
5266 | ||
5267 | return 0; | |
5268 | #endif /* not VMS */ | |
5269 | } | |
5270 | #endif /* no bcmp */ | |
5271 | #endif /* not BSTRING */ | |
68c45bf0 PE |
5272 | \f |
5273 | #ifndef HAVE_STRSIGNAL | |
5274 | char * | |
5275 | strsignal (code) | |
5276 | int code; | |
5277 | { | |
5278 | char *signame = 0; | |
5279 | ||
5280 | if (0 <= code && code < NSIG) | |
5281 | { | |
5282 | #ifdef VMS | |
5283 | signame = sys_errlist[code]; | |
5284 | #else | |
5285 | /* Cast to suppress warning if the table has const char *. */ | |
5286 | signame = (char *) sys_siglist[code]; | |
5287 | #endif | |
5288 | } | |
c4ea52a6 | 5289 | |
68c45bf0 PE |
5290 | return signame; |
5291 | } | |
5292 | #endif /* HAVE_STRSIGNAL */ | |
c4ea52a6 | 5293 | |
ab5796a9 MB |
5294 | /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf |
5295 | (do not change this comment) */ |