Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
2ac53dfa | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc. |
86a5659e JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7088d1ca | 8 | the Free Software Foundation; either version 2, or (at your option) |
86a5659e JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
86a5659e JB |
20 | |
21 | ||
22 | #include <signal.h> | |
23 | #include <setjmp.h> | |
24 | ||
18160b98 | 25 | #include <config.h> |
86a5659e | 26 | #include "lisp.h" |
9ac0d9e0 | 27 | #include "blockinput.h" |
86a5659e JB |
28 | #undef NULL |
29 | ||
30 | #define min(x,y) ((x) > (y) ? (y) : (x)) | |
31 | ||
32 | /* In this file, open, read and write refer to the system calls, | |
33 | not our sugared interfaces sys_open, sys_read and sys_write. | |
34 | Contrariwise, for systems where we use the system calls directly, | |
35 | define sys_read, etc. here as aliases for them. */ | |
36 | #ifndef read | |
37 | #define sys_read read | |
38 | #define sys_write write | |
39 | #endif /* `read' is not a macro */ | |
40 | ||
41 | #undef read | |
42 | #undef write | |
43 | ||
fe03522b RS |
44 | #ifdef WINDOWSNT |
45 | #define read _read | |
46 | #define write _write | |
47 | #include <windows.h> | |
48 | extern int errno; | |
49 | #endif /* not WINDOWSNT */ | |
50 | ||
86a5659e JB |
51 | #ifndef close |
52 | #define sys_close close | |
53 | #else | |
54 | #undef close | |
55 | #endif | |
56 | ||
57 | #ifndef open | |
58 | #define sys_open open | |
59 | #else /* `open' is a macro */ | |
60 | #undef open | |
61 | #endif /* `open' is a macro */ | |
62 | ||
986ffb24 JB |
63 | /* Does anyone other than VMS need this? */ |
64 | #ifndef fwrite | |
65 | #define sys_fwrite fwrite | |
66 | #else | |
67 | #undef fwrite | |
68 | #endif | |
69 | ||
e24f1d55 RS |
70 | #ifndef HAVE_H_ERRNO |
71 | extern int h_errno; | |
72 | #endif | |
73 | ||
86a5659e JB |
74 | #include <stdio.h> |
75 | #include <sys/types.h> | |
76 | #include <sys/stat.h> | |
77 | #include <errno.h> | |
78 | ||
dca8521c RS |
79 | /* Get _POSIX_VDISABLE, if it is available. */ |
80 | #ifdef HAVE_UNISTD_H | |
81 | #include <unistd.h> | |
82 | #endif | |
83 | ||
b05af5d3 PE |
84 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
85 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
86 | #include <sys/systeminfo.h> | |
87 | #endif | |
88 | ||
207bdbdb RS |
89 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
90 | #include <dos.h> | |
91 | #include "dosfns.h" | |
92 | #include "msdos.h" | |
93 | #include <sys/param.h> | |
15614e61 RS |
94 | |
95 | #if __DJGPP__ > 1 | |
96 | extern int etext; | |
97 | extern unsigned start __asm__ ("start"); | |
98 | #endif | |
207bdbdb RS |
99 | #endif |
100 | ||
86a5659e | 101 | extern int errno; |
86a5659e | 102 | |
bb4bc8e2 RM |
103 | #ifdef VMS |
104 | #include <rms.h> | |
105 | #include <ttdef.h> | |
106 | #include <tt2def.h> | |
107 | #include <iodef.h> | |
108 | #include <ssdef.h> | |
109 | #include <descrip.h> | |
110 | #include <fibdef.h> | |
111 | #include <atrdef.h> | |
112 | #include <ctype.h> | |
113 | #include <string.h> | |
114 | #ifdef __GNUC__ | |
115 | #include <sys/file.h> | |
116 | #else | |
117 | #include <file.h> | |
118 | #endif | |
119 | #undef F_SETFL | |
120 | #ifndef RAB$C_BID | |
121 | #include <rab.h> | |
122 | #endif | |
fe03522b | 123 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
124 | #endif /* VMS */ |
125 | ||
126 | #ifndef BSD4_1 | |
2a633456 | 127 | #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG) |
bb4bc8e2 RM |
128 | because the vms compiler doesn't grok `defined' */ |
129 | #include <fcntl.h> | |
130 | #endif | |
131 | #ifdef USG | |
132 | #ifndef USG5 | |
133 | #include <fcntl.h> | |
134 | #endif | |
135 | #endif | |
136 | #endif /* not 4.1 bsd */ | |
86a5659e | 137 | |
207bdbdb | 138 | #ifndef MSDOS |
86a5659e | 139 | #include <sys/ioctl.h> |
207bdbdb | 140 | #endif |
2a633456 | 141 | |
e04a4e0d | 142 | #include "systty.h" |
94c8642a | 143 | #include "syswait.h" |
86a5659e | 144 | |
86a5659e JB |
145 | #ifdef BROKEN_TIOCGWINSZ |
146 | #undef TIOCGWINSZ | |
8dca3179 | 147 | #undef TIOCSWINSZ |
86a5659e JB |
148 | #endif |
149 | ||
b917b2e2 | 150 | #if defined(USG) || defined(DGUX) |
86a5659e JB |
151 | #include <sys/utsname.h> |
152 | #include <string.h> | |
153 | #ifndef MEMORY_IN_STRING_H | |
154 | #include <memory.h> | |
155 | #endif | |
81444907 | 156 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
157 | #ifdef NEED_SIOCTL |
158 | #include <sys/sioctl.h> | |
159 | #endif | |
160 | #ifdef NEED_PTEM_H | |
161 | #include <sys/stream.h> | |
162 | #include <sys/ptem.h> | |
163 | #endif | |
81444907 | 164 | #endif /* TIOCGWINSZ or ISC4_0 */ |
b917b2e2 | 165 | #endif /* USG or DGUX */ |
86a5659e | 166 | |
86a5659e JB |
167 | extern int quit_char; |
168 | ||
0137dbf7 | 169 | #include "frame.h" |
86a5659e JB |
170 | #include "window.h" |
171 | #include "termhooks.h" | |
172 | #include "termchar.h" | |
173 | #include "termopts.h" | |
174 | #include "dispextern.h" | |
175 | #include "process.h" | |
176 | ||
fe03522b RS |
177 | #ifdef WINDOWSNT |
178 | #include <direct.h> | |
179 | /* In process.h which conflicts with the local copy. */ | |
180 | #define _P_WAIT 0 | |
181 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
182 | int _CRTAPI1 _getpid (void); | |
183 | #endif | |
184 | ||
86a5659e JB |
185 | #ifdef NONSYSTEM_DIR_LIBRARY |
186 | #include "ndir.h" | |
187 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
188 | ||
91bac16a JB |
189 | #include "syssignal.h" |
190 | #include "systime.h" | |
d79998bc KH |
191 | #ifdef HAVE_UTIME_H |
192 | #include <utime.h> | |
193 | #endif | |
194 | ||
195 | #ifndef HAVE_UTIMES | |
196 | #ifndef HAVE_STRUCT_UTIMBUF | |
197 | /* We want to use utime rather than utimes, but we couldn't find the | |
198 | structure declaration. We'll use the traditional one. */ | |
199 | struct utimbuf { | |
200 | long actime; | |
201 | long modtime; | |
202 | }; | |
203 | #endif | |
204 | #endif | |
86a5659e | 205 | |
e336874b KH |
206 | #ifndef VFORK_RETURN_TYPE |
207 | #define VFORK_RETURN_TYPE int | |
208 | #endif | |
209 | ||
a00d5589 RS |
210 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
211 | #ifndef LPASS8 | |
212 | #define LPASS8 0 | |
213 | #endif | |
214 | ||
215 | #ifdef BSD4_1 | |
216 | #define LNOFLSH 0100000 | |
217 | #endif | |
218 | ||
86a5659e JB |
219 | static int baud_convert[] = |
220 | #ifdef BAUD_CONVERT | |
221 | BAUD_CONVERT; | |
222 | #else | |
223 | { | |
224 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
225 | 1800, 2400, 4800, 9600, 19200, 38400 | |
226 | }; | |
227 | #endif | |
228 | ||
ba5971b3 RS |
229 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
230 | extern short ospeed; | |
231 | #else | |
515b04d0 RS |
232 | #if defined (HAVE_TERMIOS_H) && defined (LINUX) |
233 | #include <termios.h> | |
825e7e55 RS |
234 | /* HJL's version of libc is said to need this on the Alpha. |
235 | On the other hand, DEC OSF1 on the Alpha needs ospeed to be a short. */ | |
f2361c60 RS |
236 | extern speed_t ospeed; |
237 | #else | |
9f80a1c8 | 238 | extern short ospeed; |
f2361c60 | 239 | #endif |
ba5971b3 | 240 | #endif |
86a5659e | 241 | |
91bac16a | 242 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
243 | Under Unix, this is normally zero except when using X; |
244 | under VMS, we place the input channel number here. */ | |
245 | int input_fd; | |
64e971c3 RS |
246 | \f |
247 | /* Specify a different file descriptor for further input operations. */ | |
248 | ||
249 | void | |
250 | change_input_fd (fd) | |
251 | int fd; | |
252 | { | |
253 | input_fd = fd; | |
254 | } | |
255 | ||
256 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 257 | |
08633194 | 258 | void |
86a5659e JB |
259 | discard_tty_input () |
260 | { | |
fe03522b | 261 | #ifndef WINDOWSNT |
91bac16a | 262 | struct emacs_tty buf; |
86a5659e JB |
263 | |
264 | if (noninteractive) | |
265 | return; | |
266 | ||
267 | /* Discarding input is not safe when the input could contain | |
268 | replies from the X server. So don't do it. */ | |
269 | if (read_socket_hook) | |
270 | return; | |
271 | ||
272 | #ifdef VMS | |
273 | end_kbd_input (); | |
91bac16a JB |
274 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
275 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
276 | queue_kbd_input (); |
277 | #else /* not VMS */ | |
278 | #ifdef APOLLO | |
279 | { | |
280 | int zero = 0; | |
64e971c3 | 281 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
282 | } |
283 | #else /* not Apollo */ | |
fe03522b | 284 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 285 | while (dos_keyread () != -1) |
fe03522b | 286 | ; |
207bdbdb | 287 | #else /* not MSDOS */ |
91bac16a JB |
288 | EMACS_GET_TTY (input_fd, &buf); |
289 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 290 | #endif /* not MSDOS */ |
86a5659e JB |
291 | #endif /* not Apollo */ |
292 | #endif /* not VMS */ | |
fe03522b | 293 | #endif /* not WINDOWSNT */ |
86a5659e JB |
294 | } |
295 | ||
296 | #ifdef SIGTSTP | |
297 | ||
64e971c3 RS |
298 | /* Arrange for character C to be read as the next input from |
299 | the terminal. */ | |
300 | ||
86a5659e JB |
301 | stuff_char (c) |
302 | char c; | |
303 | { | |
23dab951 RS |
304 | if (read_socket_hook) |
305 | return; | |
306 | ||
86a5659e JB |
307 | /* Should perhaps error if in batch mode */ |
308 | #ifdef TIOCSTI | |
64e971c3 | 309 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 310 | #else /* no TIOCSTI */ |
71f06467 | 311 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
312 | #endif /* no TIOCSTI */ |
313 | } | |
314 | ||
315 | #endif /* SIGTSTP */ | |
64e971c3 | 316 | \f |
08633194 | 317 | void |
86a5659e JB |
318 | init_baud_rate () |
319 | { | |
86a5659e JB |
320 | if (noninteractive) |
321 | ospeed = 0; | |
322 | else | |
323 | { | |
dfc366c9 RS |
324 | #ifdef INIT_BAUD_RATE |
325 | INIT_BAUD_RATE (); | |
326 | #else | |
fe03522b | 327 | #ifdef DOS_NT |
207bdbdb | 328 | ospeed = 15; |
fe03522b | 329 | #else /* not DOS_NT */ |
86a5659e | 330 | #ifdef VMS |
91bac16a JB |
331 | struct sensemode sg; |
332 | ||
333 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 334 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
335 | ospeed = sg.xmit_baud; |
336 | #else /* not VMS */ | |
e04a4e0d JB |
337 | #ifdef HAVE_TERMIOS |
338 | struct termios sg; | |
91bac16a | 339 | |
71f06467 | 340 | sg.c_cflag = B9600; |
64e971c3 | 341 | tcgetattr (input_fd, &sg); |
d7272cff | 342 | ospeed = cfgetospeed (&sg); |
5baff9ce | 343 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b RS |
344 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
345 | if (ospeed == 0) | |
346 | ospeed = getobaud (sg.c_cflag); | |
347 | #endif | |
e04a4e0d JB |
348 | #else /* neither VMS nor TERMIOS */ |
349 | #ifdef HAVE_TERMIO | |
350 | struct termio sg; | |
91bac16a | 351 | |
71f06467 | 352 | sg.c_cflag = B9600; |
e04a4e0d | 353 | #ifdef HAVE_TCATTR |
64e971c3 | 354 | tcgetattr (input_fd, &sg); |
e04a4e0d | 355 | #else |
6c65530f | 356 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 357 | #endif |
91bac16a | 358 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 359 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
360 | struct sgttyb sg; |
361 | ||
362 | sg.sg_ospeed = B9600; | |
64e971c3 | 363 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 364 | abort (); |
91bac16a | 365 | ospeed = sg.sg_ospeed; |
91bac16a | 366 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 367 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 368 | #endif /* not VMS */ |
fe03522b | 369 | #endif /* not DOS_NT */ |
dfc366c9 | 370 | #endif /* not INIT_BAUD_RATE */ |
86a5659e JB |
371 | } |
372 | ||
373 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
fe03522b | 374 | ? baud_convert[ospeed] : 9600); |
86a5659e JB |
375 | if (baud_rate == 0) |
376 | baud_rate = 1200; | |
377 | } | |
378 | ||
379 | /*ARGSUSED*/ | |
380 | set_exclusive_use (fd) | |
381 | int fd; | |
382 | { | |
383 | #ifdef FIOCLEX | |
384 | ioctl (fd, FIOCLEX, 0); | |
385 | #endif | |
386 | /* Ok to do nothing if this feature does not exist */ | |
387 | } | |
64e971c3 | 388 | \f |
86a5659e JB |
389 | #ifndef subprocesses |
390 | ||
391 | wait_without_blocking () | |
392 | { | |
2a633456 | 393 | #ifdef BSD_SYSTEM |
86a5659e JB |
394 | wait3 (0, WNOHANG | WUNTRACED, 0); |
395 | #else | |
396 | croak ("wait_without_blocking"); | |
397 | #endif | |
398 | synch_process_alive = 0; | |
399 | } | |
400 | ||
401 | #endif /* not subprocesses */ | |
402 | ||
403 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 404 | (at least for bsd). */ |
86a5659e JB |
405 | |
406 | SIGTYPE | |
407 | wait_for_termination_signal () | |
408 | {} | |
409 | ||
410 | /* Wait for subprocess with process id `pid' to terminate and | |
411 | make sure it will get eliminated (not remain forever as a zombie) */ | |
412 | ||
08633194 | 413 | void |
86a5659e JB |
414 | wait_for_termination (pid) |
415 | int pid; | |
416 | { | |
417 | while (1) | |
418 | { | |
419 | #ifdef subprocesses | |
420 | #ifdef VMS | |
421 | int status; | |
422 | ||
986ffb24 | 423 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
424 | break; |
425 | #else /* not VMS */ | |
2a633456 | 426 | #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
427 | /* Note that kill returns -1 even if the process is just a zombie now. |
428 | But inevitably a SIGCHLD interrupt should be generated | |
429 | and child_sig will do wait3 and make the process go away. */ | |
430 | /* There is some indication that there is a bug involved with | |
431 | termination of subprocesses, perhaps involving a kernel bug too, | |
432 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
433 | if that causes the problem to go away or get worse. */ | |
434 | sigsetmask (sigmask (SIGCHLD)); | |
435 | if (0 > kill (pid, 0)) | |
fe03522b | 436 | { |
4c8975ad RS |
437 | sigsetmask (SIGEMPTYMASK); |
438 | kill (getpid (), SIGCHLD); | |
439 | break; | |
440 | } | |
441 | if (wait_debugging) | |
442 | sleep (1); | |
443 | else | |
444 | sigpause (SIGEMPTYMASK); | |
2a633456 | 445 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
05695621 | 446 | #if defined (UNIPLUS) |
4c8975ad RS |
447 | if (0 > kill (pid, 0)) |
448 | break; | |
449 | wait (0); | |
2a633456 | 450 | #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ |
fe03522b | 451 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
9ab714c7 RS |
452 | sigblock (sigmask (SIGCHLD)); |
453 | if (0 > kill (pid, 0)) | |
454 | { | |
455 | sigunblock (sigmask (SIGCHLD)); | |
456 | break; | |
457 | } | |
92c995de | 458 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 459 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
460 | #ifdef HAVE_SYSV_SIGPAUSE |
461 | sighold (SIGCHLD); | |
462 | if (0 > kill (pid, 0)) | |
463 | { | |
464 | sigrelse (SIGCHLD); | |
465 | break; | |
466 | } | |
467 | sigpause (SIGCHLD); | |
468 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
469 | #ifdef WINDOWSNT |
470 | wait (0); | |
471 | break; | |
472 | #else /* not WINDOWSNT */ | |
4c8975ad | 473 | if (0 > kill (pid, 0)) |
86a5659e | 474 | break; |
4c8975ad RS |
475 | /* Using sleep instead of pause avoids timing error. |
476 | If the inferior dies just before the sleep, | |
477 | we lose just one second. */ | |
478 | sleep (1); | |
fe03522b | 479 | #endif /* not WINDOWSNT */ |
4c8975ad | 480 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 481 | #endif /* not POSIX_SIGNALS */ |
4c8975ad | 482 | #endif /* not UNIPLUS */ |
2a633456 | 483 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
484 | #endif /* not VMS */ |
485 | #else /* not subprocesses */ | |
15614e61 RS |
486 | #if __DJGPP__ > 1 |
487 | break; | |
488 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
489 | #ifndef BSD4_1 |
490 | if (kill (pid, 0) < 0) | |
491 | break; | |
492 | wait (0); | |
493 | #else /* BSD4_1 */ | |
494 | int status; | |
495 | status = wait (0); | |
496 | if (status == pid || status == -1) | |
497 | break; | |
498 | #endif /* BSD4_1 */ | |
15614e61 | 499 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
500 | #endif /* not subprocesses */ |
501 | } | |
502 | } | |
503 | ||
504 | #ifdef subprocesses | |
505 | ||
506 | /* | |
507 | * flush any pending output | |
508 | * (may flush input as well; it does not matter the way we use it) | |
509 | */ | |
510 | ||
08633194 | 511 | void |
86a5659e JB |
512 | flush_pending_output (channel) |
513 | int channel; | |
514 | { | |
515 | #ifdef HAVE_TERMIOS | |
516 | /* If we try this, we get hit with SIGTTIN, because | |
517 | the child's tty belongs to the child's pgrp. */ | |
518 | #else | |
519 | #ifdef TCFLSH | |
520 | ioctl (channel, TCFLSH, 1); | |
521 | #else | |
522 | #ifdef TIOCFLUSH | |
523 | int zero = 0; | |
524 | /* 3rd arg should be ignored | |
525 | but some 4.2 kernels actually want the address of an int | |
526 | and nonzero means something different. */ | |
527 | ioctl (channel, TIOCFLUSH, &zero); | |
528 | #endif | |
529 | #endif | |
530 | #endif | |
531 | } | |
64e971c3 | 532 | \f |
86a5659e JB |
533 | #ifndef VMS |
534 | /* Set up the terminal at the other end of a pseudo-terminal that | |
535 | we will be controlling an inferior through. | |
536 | It should not echo or do line-editing, since that is done | |
537 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
538 | ||
08633194 | 539 | void |
86a5659e JB |
540 | child_setup_tty (out) |
541 | int out; | |
542 | { | |
fe03522b | 543 | #ifndef DOS_NT |
91bac16a JB |
544 | struct emacs_tty s; |
545 | ||
546 | EMACS_GET_TTY (out, &s); | |
86a5659e | 547 | |
31be8d24 | 548 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
549 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
550 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 551 | #ifdef NLDLY |
91bac16a JB |
552 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
553 | /* No output delays */ | |
9d4e5eea | 554 | #endif |
91bac16a JB |
555 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
556 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
557 | #ifdef IUCLC |
558 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
559 | #endif | |
f7097b2a RS |
560 | #ifdef ISTRIP |
561 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
562 | #endif | |
23e4c8be | 563 | #ifdef OLCUC |
9d4e5eea RS |
564 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
565 | #endif | |
f7097b2a | 566 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 567 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 568 | #if 0 |
eb8c3be9 | 569 | /* Said to be unnecessary: */ |
91bac16a JB |
570 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
571 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
572 | #endif | |
573 | ||
574 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
575 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
576 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
577 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 578 | |
86a5659e | 579 | #ifdef HPUX |
91bac16a | 580 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 581 | #endif /* HPUX */ |
91bac16a | 582 | |
86a5659e JB |
583 | #ifdef AIX |
584 | /* AIX enhanced edit loses NULs, so disable it */ | |
585 | #ifndef IBMR2AIX | |
91bac16a JB |
586 | s.main.c_line = 0; |
587 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
588 | #endif |
589 | /* Also, PTY overloads NUL and BREAK. | |
590 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
591 | s.main.c_iflag &= ~IGNBRK; |
592 | s.main.c_iflag &= ~BRKINT; | |
593 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 594 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
595 | #ifdef SIGNALS_VIA_CHARACTERS |
596 | /* the QUIT and INTR character are used in process_send_signal | |
597 | so set them here to something useful. */ | |
598 | if (s.main.c_cc[VQUIT] == 0377) | |
599 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
600 | if (s.main.c_cc[VINTR] == 0377) | |
601 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
602 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
603 | /* QUIT and INTR work better as signals, so disable character forms */ | |
604 | s.main.c_cc[VQUIT] = 0377; | |
605 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 606 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
607 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
608 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 609 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
610 | #endif /* AIX */ |
611 | ||
612 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
613 | |
614 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
615 | | CBREAK | TANDEM); | |
a00d5589 | 616 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
617 | s.main.sg_erase = 0377; |
618 | s.main.sg_kill = 0377; | |
1bf96fb5 | 619 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 620 | |
86a5659e JB |
621 | #endif /* not HAVE_TERMIO */ |
622 | ||
91bac16a | 623 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
624 | |
625 | #ifdef BSD4_1 | |
626 | if (interrupt_input) | |
627 | reset_sigio (); | |
628 | #endif /* BSD4_1 */ | |
629 | #ifdef RTU | |
630 | { | |
631 | int zero = 0; | |
632 | ioctl (out, FIOASYNC, &zero); | |
633 | } | |
634 | #endif /* RTU */ | |
fe03522b | 635 | #endif /* not DOS_NT */ |
86a5659e JB |
636 | } |
637 | #endif /* not VMS */ | |
638 | ||
639 | #endif /* subprocesses */ | |
64e971c3 | 640 | \f |
86a5659e JB |
641 | /* Record a signal code and the handler for it. */ |
642 | struct save_signal | |
643 | { | |
644 | int code; | |
35a05cca | 645 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
646 | }; |
647 | ||
35a05cca AS |
648 | static void save_signal_handlers P_ ((struct save_signal *)); |
649 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
650 | ||
86a5659e JB |
651 | /* Suspend the Emacs process; give terminal to its superior. */ |
652 | ||
08633194 | 653 | void |
86a5659e JB |
654 | sys_suspend () |
655 | { | |
656 | #ifdef VMS | |
88191e36 RS |
657 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
658 | to the current emacs as a cheaper than starting a whole new process. This | |
659 | is set up by KEPTEDITOR.COM. */ | |
660 | unsigned long parent_id, foster_parent_id; | |
661 | char *fpid_string; | |
662 | ||
663 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
664 | if (fpid_string != NULL) | |
665 | { | |
666 | sscanf (fpid_string, "%x", &foster_parent_id); | |
667 | if (foster_parent_id != 0) | |
668 | parent_id = foster_parent_id; | |
669 | else | |
670 | parent_id = getppid (); | |
671 | } | |
672 | else | |
673 | parent_id = getppid (); | |
674 | ||
9ac0d9e0 | 675 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 676 | |
86a5659e JB |
677 | if (parent_id && parent_id != 0xffffffff) |
678 | { | |
679 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
680 | int status = LIB$ATTACH (&parent_id) & 1; | |
681 | signal (SIGINT, oldsig); | |
682 | return status; | |
683 | } | |
684 | else | |
685 | { | |
686 | struct { | |
687 | int l; | |
688 | char *a; | |
689 | } d_prompt; | |
690 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
691 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 692 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
693 | return 1; |
694 | } | |
695 | return -1; | |
696 | #else | |
207bdbdb | 697 | #if defined(SIGTSTP) && !defined(MSDOS) |
86a5659e | 698 | |
5a570e37 | 699 | { |
e89a2cd5 | 700 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
701 | EMACS_KILLPG (pgrp, SIGTSTP); |
702 | } | |
86a5659e JB |
703 | |
704 | #else /* No SIGTSTP */ | |
705 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
706 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
707 | kill (getpid (), SIGQUIT); | |
708 | ||
709 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
710 | ||
711 | /* On a system where suspending is not implemented, | |
712 | instead fork a subshell and let it talk directly to the terminal | |
713 | while we wait. */ | |
a0932daa KH |
714 | sys_subshell (); |
715 | ||
716 | #endif /* no USG_JOBCTRL */ | |
717 | #endif /* no SIGTSTP */ | |
718 | #endif /* not VMS */ | |
719 | } | |
720 | ||
721 | /* Fork a subshell. */ | |
722 | ||
08633194 | 723 | void |
a0932daa KH |
724 | sys_subshell () |
725 | { | |
726 | #ifndef VMS | |
ad00c243 | 727 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
728 | int st; |
729 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
730 | #endif | |
efa04277 | 731 | int pid; |
86a5659e | 732 | struct save_signal saved_handlers[5]; |
efa04277 RS |
733 | Lisp_Object dir; |
734 | unsigned char *str = 0; | |
735 | int len; | |
86a5659e JB |
736 | |
737 | saved_handlers[0].code = SIGINT; | |
738 | saved_handlers[1].code = SIGQUIT; | |
739 | saved_handlers[2].code = SIGTERM; | |
740 | #ifdef SIGIO | |
741 | saved_handlers[3].code = SIGIO; | |
742 | saved_handlers[4].code = 0; | |
743 | #else | |
744 | saved_handlers[3].code = 0; | |
745 | #endif | |
746 | ||
efa04277 RS |
747 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
748 | which somehow wedges the hp compiler. So instead... */ | |
749 | ||
750 | dir = intern ("default-directory"); | |
0e7e7a58 | 751 | if (NILP (Fboundp (dir))) |
efa04277 RS |
752 | goto xyzzy; |
753 | dir = Fsymbol_value (dir); | |
914e81a2 | 754 | if (!STRINGP (dir)) |
efa04277 RS |
755 | goto xyzzy; |
756 | ||
757 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
758 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
759 | len = XSTRING (dir)->size; | |
760 | bcopy (XSTRING (dir)->data, str, len); | |
761 | if (str[len - 1] != '/') str[len++] = '/'; | |
762 | str[len] = 0; | |
763 | xyzzy: | |
764 | ||
ad00c243 | 765 | #ifdef DOS_NT |
7964ba9e | 766 | pid = 0; |
718ca3cf RS |
767 | #if __DJGPP__ > 1 |
768 | save_signal_handlers (saved_handlers); | |
769 | synch_process_alive = 1; | |
770 | #endif /* __DJGPP__ > 1 */ | |
7964ba9e | 771 | #else |
efa04277 | 772 | pid = vfork (); |
86a5659e JB |
773 | if (pid == -1) |
774 | error ("Can't spawn subshell"); | |
7964ba9e RS |
775 | #endif |
776 | ||
86a5659e JB |
777 | if (pid == 0) |
778 | { | |
7964ba9e | 779 | char *sh = 0; |
86a5659e | 780 | |
ad00c243 | 781 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 782 | getwd (oldwd); |
7964ba9e RS |
783 | if (sh == 0) |
784 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 785 | #endif |
7964ba9e RS |
786 | if (sh == 0) |
787 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
788 | if (sh == 0) |
789 | sh = "sh"; | |
207bdbdb | 790 | |
86a5659e | 791 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 792 | if (str) |
86a5659e | 793 | chdir (str); |
efa04277 | 794 | |
86a5659e JB |
795 | #ifdef subprocesses |
796 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
797 | #endif | |
1593c2fe | 798 | |
6f8b4d01 | 799 | #ifdef SET_EMACS_PRIORITY |
1593c2fe JB |
800 | { |
801 | extern int emacs_priority; | |
802 | ||
6f8b4d01 | 803 | if (emacs_priority < 0) |
1593c2fe JB |
804 | nice (-emacs_priority); |
805 | } | |
806 | #endif | |
807 | ||
fe03522b | 808 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
207bdbdb RS |
809 | st = system (sh); |
810 | chdir (oldwd); | |
7964ba9e | 811 | #if 0 /* This is also reported if last command executed in subshell failed, KFS */ |
207bdbdb | 812 | if (st) |
fe03522b | 813 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
7964ba9e | 814 | #endif |
207bdbdb | 815 | #else /* not MSDOS */ |
fe03522b | 816 | #ifdef WINDOWSNT |
fe03522b RS |
817 | /* Waits for process completion */ |
818 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 819 | chdir (oldwd); |
fe03522b RS |
820 | if (pid == -1) |
821 | write (1, "Can't execute subshell", 22); | |
fe03522b | 822 | #else /* not WINDOWSNT */ |
86a5659e JB |
823 | execlp (sh, sh, 0); |
824 | write (1, "Can't execute subshell", 22); | |
825 | _exit (1); | |
fe03522b | 826 | #endif /* not WINDOWSNT */ |
207bdbdb | 827 | #endif /* not MSDOS */ |
86a5659e JB |
828 | } |
829 | ||
718ca3cf RS |
830 | /* Do this now if we did not do it before. */ |
831 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 832 | save_signal_handlers (saved_handlers); |
ffafc793 | 833 | synch_process_alive = 1; |
718ca3cf RS |
834 | #endif |
835 | ||
ad00c243 | 836 | #ifndef DOS_NT |
86a5659e | 837 | wait_for_termination (pid); |
7964ba9e | 838 | #endif |
86a5659e | 839 | restore_signal_handlers (saved_handlers); |
718ca3cf | 840 | synch_process_alive = 0; |
a0932daa | 841 | #endif /* !VMS */ |
86a5659e JB |
842 | } |
843 | ||
35a05cca | 844 | static void |
86a5659e JB |
845 | save_signal_handlers (saved_handlers) |
846 | struct save_signal *saved_handlers; | |
847 | { | |
848 | while (saved_handlers->code) | |
849 | { | |
508b171c | 850 | saved_handlers->handler |
35a05cca | 851 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
852 | saved_handlers++; |
853 | } | |
854 | } | |
855 | ||
35a05cca | 856 | static void |
86a5659e JB |
857 | restore_signal_handlers (saved_handlers) |
858 | struct save_signal *saved_handlers; | |
859 | { | |
860 | while (saved_handlers->code) | |
861 | { | |
862 | signal (saved_handlers->code, saved_handlers->handler); | |
863 | saved_handlers++; | |
864 | } | |
865 | } | |
866 | \f | |
867 | #ifdef F_SETFL | |
868 | ||
869 | int old_fcntl_flags; | |
870 | ||
08633194 | 871 | void |
23dab951 RS |
872 | init_sigio (fd) |
873 | int fd; | |
86a5659e JB |
874 | { |
875 | #ifdef FASYNC | |
23dab951 RS |
876 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
877 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 878 | #endif |
23dab951 | 879 | interrupts_deferred = 0; |
86a5659e JB |
880 | } |
881 | ||
590034f9 | 882 | void |
86a5659e JB |
883 | reset_sigio () |
884 | { | |
885 | unrequest_sigio (); | |
886 | } | |
887 | ||
eb8c3be9 | 888 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e | 889 | |
08633194 | 890 | void |
86a5659e JB |
891 | request_sigio () |
892 | { | |
23dab951 RS |
893 | if (read_socket_hook) |
894 | return; | |
895 | ||
86a5659e | 896 | #ifdef SIGWINCH |
e065a56e | 897 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 898 | #endif |
64e971c3 | 899 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
900 | |
901 | interrupts_deferred = 0; | |
902 | } | |
903 | ||
08633194 | 904 | void |
86a5659e JB |
905 | unrequest_sigio () |
906 | { | |
23dab951 RS |
907 | if (read_socket_hook) |
908 | return; | |
909 | ||
86a5659e | 910 | #ifdef SIGWINCH |
e065a56e | 911 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 912 | #endif |
64e971c3 | 913 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
914 | interrupts_deferred = 1; |
915 | } | |
916 | ||
917 | #else /* no FASYNC */ | |
918 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
919 | ||
08633194 | 920 | void |
86a5659e JB |
921 | request_sigio () |
922 | { | |
923 | int on = 1; | |
23dab951 RS |
924 | |
925 | if (read_socket_hook) | |
926 | return; | |
927 | ||
64e971c3 | 928 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
929 | interrupts_deferred = 0; |
930 | } | |
931 | ||
08633194 | 932 | void |
86a5659e JB |
933 | unrequest_sigio () |
934 | { | |
935 | int off = 0; | |
936 | ||
23dab951 RS |
937 | if (read_socket_hook) |
938 | return; | |
939 | ||
64e971c3 | 940 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
941 | interrupts_deferred = 1; |
942 | } | |
943 | ||
944 | #else /* not FASYNC, not STRIDE */ | |
945 | ||
25ab68af RS |
946 | #ifdef _CX_UX |
947 | ||
948 | #include <termios.h> | |
949 | ||
08633194 | 950 | void |
25ab68af RS |
951 | request_sigio () |
952 | { | |
953 | int on = 1; | |
954 | sigset_t st; | |
955 | ||
23dab951 RS |
956 | if (read_socket_hook) |
957 | return; | |
958 | ||
25ab68af RS |
959 | sigemptyset(&st); |
960 | sigaddset(&st, SIGIO); | |
961 | ioctl (input_fd, FIOASYNC, &on); | |
962 | interrupts_deferred = 0; | |
963 | sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0); | |
964 | } | |
965 | ||
08633194 | 966 | void |
25ab68af RS |
967 | unrequest_sigio () |
968 | { | |
969 | int off = 0; | |
970 | ||
23dab951 RS |
971 | if (read_socket_hook) |
972 | return; | |
973 | ||
25ab68af RS |
974 | ioctl (input_fd, FIOASYNC, &off); |
975 | interrupts_deferred = 1; | |
976 | } | |
977 | ||
978 | #else /* ! _CX_UX */ | |
979 | ||
08633194 | 980 | void |
86a5659e JB |
981 | request_sigio () |
982 | { | |
23dab951 RS |
983 | if (read_socket_hook) |
984 | return; | |
985 | ||
86a5659e JB |
986 | croak ("request_sigio"); |
987 | } | |
988 | ||
08633194 | 989 | void |
86a5659e JB |
990 | unrequest_sigio () |
991 | { | |
23dab951 RS |
992 | if (read_socket_hook) |
993 | return; | |
994 | ||
86a5659e JB |
995 | croak ("unrequest_sigio"); |
996 | } | |
997 | ||
25ab68af | 998 | #endif /* _CX_UX */ |
86a5659e JB |
999 | #endif /* STRIDE */ |
1000 | #endif /* FASYNC */ | |
1001 | #endif /* F_SETFL */ | |
1002 | \f | |
9ae8f997 JB |
1003 | /* Saving and restoring the process group of Emacs's terminal. */ |
1004 | ||
0ba73609 | 1005 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1006 | |
1007 | /* The process group of which Emacs was a member when it initially | |
1008 | started. | |
1009 | ||
1010 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
1011 | getpid ()), then we know we're running under a shell with job | |
1012 | control (Emacs would never be run as part of a pipeline). | |
1013 | Everything is fine. | |
1014 | ||
1015 | If Emacs was not in its own process group, then we know we're | |
1016 | running under a shell (or a caller) that doesn't know how to | |
1017 | separate itself from Emacs (like sh). Emacs must be in its own | |
1018 | process group in order to receive SIGIO correctly. In this | |
1019 | situation, we put ourselves in our own pgroup, forcibly set the | |
1020 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
1021 | the tty's pgroup just like any other terminal setting. If | |
1022 | inherited_group was not the tty's pgroup, then we'll get a | |
1023 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
1024 | it goes foreground in the future, which is what should happen. */ | |
1025 | int inherited_pgroup; | |
1026 | ||
1027 | /* Split off the foreground process group to Emacs alone. | |
1028 | When we are in the foreground, but not started in our own process | |
1029 | group, redirect the TTY to point to our own process group. We need | |
1030 | to be in our own process group to receive SIGIO properly. */ | |
1031 | narrow_foreground_group () | |
1032 | { | |
1033 | int me = getpid (); | |
1034 | ||
1035 | setpgrp (0, inherited_pgroup); | |
1036 | if (inherited_pgroup != me) | |
64e971c3 | 1037 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
1038 | setpgrp (0, me); |
1039 | } | |
1040 | ||
1041 | /* Set the tty to our original foreground group. */ | |
1042 | widen_foreground_group () | |
1043 | { | |
1044 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 1045 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
1046 | setpgrp (0, inherited_pgroup); |
1047 | } | |
1048 | ||
0ba73609 | 1049 | #endif /* BSD_PGRPS */ |
9ae8f997 | 1050 | \f |
68936329 JB |
1051 | /* Getting and setting emacs_tty structures. */ |
1052 | ||
1053 | /* Set *TC to the parameters associated with the terminal FD. | |
1054 | Return zero if all's well, or -1 if we ran into an error we | |
1055 | couldn't deal with. */ | |
1056 | int | |
1057 | emacs_get_tty (fd, settings) | |
1058 | int fd; | |
1059 | struct emacs_tty *settings; | |
1060 | { | |
1061 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
1062 | #ifdef HAVE_TCATTR | |
1063 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1064 | if (tcgetattr (fd, &settings->main) < 0) | |
1065 | return -1; | |
1066 | ||
1067 | #else | |
1068 | #ifdef HAVE_TERMIO | |
1069 | /* The SYSV-style interface? */ | |
1070 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
1071 | return -1; | |
1072 | ||
1073 | #else | |
1074 | #ifdef VMS | |
1075 | /* Vehemently Monstrous System? :-) */ | |
1076 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1077 | &settings->main.class, 12, 0, 0, 0, 0) | |
1078 | & 1)) | |
1079 | return -1; | |
1080 | ||
1081 | #else | |
fe03522b | 1082 | #ifndef DOS_NT |
68936329 JB |
1083 | /* I give up - I hope you have the BSD ioctls. */ |
1084 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1085 | return -1; | |
fe03522b | 1086 | #endif /* not DOS_NT */ |
68936329 JB |
1087 | #endif |
1088 | #endif | |
1089 | #endif | |
1090 | ||
1091 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1092 | #ifdef HAVE_LTCHARS |
68936329 JB |
1093 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1094 | return -1; | |
1095 | #endif | |
1096 | ||
1097 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1098 | #ifdef HAVE_TCHARS |
68936329 JB |
1099 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1100 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1101 | return -1; | |
1102 | #endif | |
1103 | ||
1104 | /* We have survived the tempest. */ | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | ||
1109 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1110 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1111 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1112 | |
68936329 | 1113 | int |
394049ec | 1114 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1115 | int fd; |
1116 | struct emacs_tty *settings; | |
394049ec | 1117 | int flushp; |
68936329 JB |
1118 | { |
1119 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1120 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1121 | int i; |
68936329 JB |
1122 | /* We have those nifty POSIX tcmumbleattr functions. |
1123 | William J. Smith <wjs@wiis.wang.com> writes: | |
1124 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
1125 | able to perform any of the requested actions, even if some | |
1126 | of the requested actions could not be performed. | |
1127 | We must read settings back to ensure tty setup properly. | |
1128 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1129 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1130 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1131 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1132 | { |
1133 | if (errno == EINTR) | |
1134 | continue; | |
1135 | else | |
1136 | return -1; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | struct termios new; | |
1141 | ||
1142 | /* Get the current settings, and see if they're what we asked for. */ | |
1143 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1144 | /* We cannot use memcmp on the whole structure here because under |
1145 | * aix386 the termios structure has some reserved field that may | |
1146 | * not be filled in. | |
1147 | */ | |
1148 | if ( new.c_iflag == settings->main.c_iflag | |
1149 | && new.c_oflag == settings->main.c_oflag | |
1150 | && new.c_cflag == settings->main.c_cflag | |
1151 | && new.c_lflag == settings->main.c_lflag | |
1152 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 1153 | break; |
e6cc3307 RS |
1154 | else |
1155 | continue; | |
68936329 JB |
1156 | } |
1157 | ||
1158 | #else | |
1159 | #ifdef HAVE_TERMIO | |
1160 | /* The SYSV-style interface? */ | |
394049ec | 1161 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1162 | return -1; |
1163 | ||
1164 | #else | |
1165 | #ifdef VMS | |
1166 | /* Vehemently Monstrous System? :-) */ | |
1167 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1168 | &settings->main.class, 12, 0, 0, 0, 0) | |
1169 | & 1)) | |
1170 | return -1; | |
1171 | ||
1172 | #else | |
fe03522b | 1173 | #ifndef DOS_NT |
68936329 | 1174 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1175 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1176 | return -1; |
fe03522b | 1177 | #endif /* not DOS_NT */ |
68936329 JB |
1178 | |
1179 | #endif | |
1180 | #endif | |
1181 | #endif | |
1182 | ||
1183 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1184 | #ifdef HAVE_LTCHARS |
68936329 JB |
1185 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1186 | return -1; | |
1187 | #endif | |
1188 | ||
1189 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1190 | #ifdef HAVE_TCHARS |
68936329 JB |
1191 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1192 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1193 | return -1; | |
1194 | #endif | |
1195 | ||
1196 | /* We have survived the tempest. */ | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | \f | |
91bac16a JB |
1201 | /* The initial tty mode bits */ |
1202 | struct emacs_tty old_tty; | |
86a5659e | 1203 | |
7e32a4fb KH |
1204 | /* 1 if we have been through init_sys_modes. */ |
1205 | int term_initted; | |
1206 | ||
1207 | /* 1 if outer tty status has been recorded. */ | |
1208 | int old_tty_valid; | |
86a5659e | 1209 | |
91bac16a JB |
1210 | #ifdef BSD4_1 |
1211 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1212 | sigio. */ | |
1213 | int lmode; | |
1214 | #endif | |
1215 | ||
46f2fdac | 1216 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1217 | #ifdef F_SETOWN |
1218 | int old_fcntl_owner; | |
1219 | #endif /* F_SETOWN */ | |
46f2fdac | 1220 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1221 | |
86a5659e JB |
1222 | /* This may also be defined in stdio, |
1223 | but if so, this does no harm, | |
1224 | and using the same name avoids wasting the other one's space. */ | |
1225 | ||
1226 | #if defined (USG) || defined (DGUX) | |
1227 | unsigned char _sobuf[BUFSIZ+8]; | |
1228 | #else | |
1229 | char _sobuf[BUFSIZ]; | |
1230 | #endif | |
1231 | ||
50b8cf60 | 1232 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1233 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1234 | #endif | |
50b8cf60 | 1235 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1236 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
86a5659e JB |
1237 | #endif |
1238 | ||
08633194 | 1239 | void |
86a5659e JB |
1240 | init_sys_modes () |
1241 | { | |
91bac16a JB |
1242 | struct emacs_tty tty; |
1243 | ||
86a5659e JB |
1244 | #ifdef VMS |
1245 | #if 0 | |
1246 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1247 | extern int (*interrupt_signal) (); | |
1248 | #endif | |
1249 | #endif | |
1250 | ||
4ec5cb58 RS |
1251 | Vtty_erase_char = Qnil; |
1252 | ||
86a5659e JB |
1253 | if (noninteractive) |
1254 | return; | |
1255 | ||
1256 | #ifdef VMS | |
1257 | if (!input_ef) | |
1258 | input_ef = get_kbd_event_flag (); | |
1259 | /* LIB$GET_EF (&input_ef); */ | |
1260 | SYS$CLREF (input_ef); | |
1261 | waiting_for_ast = 0; | |
1262 | if (!timer_ef) | |
1263 | timer_ef = get_timer_event_flag (); | |
1264 | /* LIB$GET_EF (&timer_ef); */ | |
1265 | SYS$CLREF (timer_ef); | |
210b2b4f | 1266 | #if 0 |
86a5659e JB |
1267 | if (!process_ef) |
1268 | { | |
1269 | LIB$GET_EF (&process_ef); | |
1270 | SYS$CLREF (process_ef); | |
1271 | } | |
1272 | if (input_ef / 32 != process_ef / 32) | |
1273 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1274 | #endif |
86a5659e | 1275 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1276 | croak ("Input and timer event flags in different clusters."); |
1277 | #if 0 | |
86a5659e JB |
1278 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1279 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1280 | #endif |
86a5659e JB |
1281 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1282 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1283 | #ifndef VMS4_4 |
1284 | sys_access_reinit (); | |
1285 | #endif | |
86a5659e | 1286 | #endif /* not VMS */ |
91bac16a | 1287 | |
0ba73609 | 1288 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1289 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1290 | narrow_foreground_group (); | |
1291 | #endif | |
1292 | ||
23cafe43 | 1293 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1294 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1295 | needs the initialization code below. */ | |
86a5659e | 1296 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1297 | #endif |
86a5659e | 1298 | { |
23dab951 RS |
1299 | EMACS_GET_TTY (input_fd, &old_tty); |
1300 | ||
7e32a4fb KH |
1301 | old_tty_valid = 1; |
1302 | ||
91bac16a | 1303 | tty = old_tty; |
86a5659e | 1304 | |
31be8d24 | 1305 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2e34157c | 1306 | XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); |
4ec5cb58 | 1307 | |
421dd92f RS |
1308 | #ifdef DGUX |
1309 | /* This allows meta to be sent on 8th bit. */ | |
1310 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1311 | #endif | |
91bac16a JB |
1312 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1313 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1314 | #ifdef INLCR /* I'm just being cautious, |
1315 | since I can't check how widespread INLCR is--rms. */ | |
1316 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ | |
1317 | #endif | |
86a5659e | 1318 | #ifdef ISTRIP |
91bac16a | 1319 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1320 | #endif |
91bac16a JB |
1321 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1322 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1323 | #ifdef IEXTEN |
b26bc18b | 1324 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1325 | #endif |
91bac16a | 1326 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1327 | if (flow_control) |
1328 | { | |
91bac16a | 1329 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1330 | #ifdef IXANY |
91bac16a | 1331 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1332 | #endif /* IXANY */ |
1333 | } | |
1334 | else | |
91bac16a JB |
1335 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1336 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1337 | on output */ | |
1338 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1339 | #ifdef CS8 |
1340 | if (meta_key) | |
1341 | { | |
91bac16a JB |
1342 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1343 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1344 | } |
1345 | #endif | |
91bac16a | 1346 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1347 | /* Set up C-g for both SIGQUIT and SIGINT. |
1348 | We don't know which we will get, but we handle both alike | |
1349 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1350 | tty.main.c_cc[VQUIT] = quit_char; |
1351 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1352 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1353 | #ifdef VSWTCH |
e2b40c23 | 1354 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1355 | of C-z */ |
86a5659e | 1356 | #endif /* VSWTCH */ |
c179a6d1 | 1357 | |
86a5659e | 1358 | #if defined (mips) || defined (HAVE_TCATTR) |
86a5659e | 1359 | #ifdef VSUSP |
e2b40c23 | 1360 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1361 | #endif /* VSUSP */ |
1362 | #ifdef V_DSUSP | |
e2b40c23 | 1363 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1364 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1365 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1366 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1367 | #endif /* VDSUSP */ | |
92c995de RS |
1368 | #ifdef VLNEXT |
1369 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1370 | #endif /* VLNEXT */ | |
1371 | #ifdef VREPRINT | |
1372 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1373 | #endif /* VREPRINT */ | |
1374 | #ifdef VWERASE | |
1375 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1376 | #endif /* VWERASE */ | |
1377 | #ifdef VDISCARD | |
1378 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1379 | #endif /* VDISCARD */ | |
c179a6d1 RS |
1380 | |
1381 | if (flow_control) | |
1382 | { | |
421dd92f | 1383 | #ifdef VSTART |
c179a6d1 | 1384 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1385 | #endif /* VSTART */ |
1386 | #ifdef VSTOP | |
c179a6d1 | 1387 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1388 | #endif /* VSTOP */ |
c179a6d1 RS |
1389 | } |
1390 | else | |
1391 | { | |
1392 | #ifdef VSTART | |
1393 | tty.main.c_cc[VSTART] = CDISABLE; | |
1394 | #endif /* VSTART */ | |
1395 | #ifdef VSTOP | |
1396 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1397 | #endif /* VSTOP */ | |
1398 | } | |
86a5659e | 1399 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1400 | |
441f6399 | 1401 | #ifdef SET_LINE_DISCIPLINE |
ea5a0917 | 1402 | /* Need to explicitly request TERMIODISC line discipline or |
441f6399 RS |
1403 | Ultrix's termios does not work correctly. */ |
1404 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1405 | #endif | |
86a5659e JB |
1406 | #ifdef AIX |
1407 | #ifndef IBMR2AIX | |
441f6399 | 1408 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1409 | tty.main.c_line = 0; |
1410 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1411 | #else |
91bac16a JB |
1412 | tty.main.c_cc[VSTRT] = 255; |
1413 | tty.main.c_cc[VSTOP] = 255; | |
1414 | tty.main.c_cc[VSUSP] = 255; | |
1415 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e | 1416 | #endif /* IBMR2AIX */ |
ac567c95 RS |
1417 | if (flow_control) |
1418 | { | |
1419 | #ifdef VSTART | |
1420 | tty.main.c_cc[VSTART] = '\021'; | |
1421 | #endif /* VSTART */ | |
1422 | #ifdef VSTOP | |
1423 | tty.main.c_cc[VSTOP] = '\023'; | |
1424 | #endif /* VSTOP */ | |
1425 | } | |
86a5659e JB |
1426 | /* Also, PTY overloads NUL and BREAK. |
1427 | don't ignore break, but don't signal either, so it looks like NUL. | |
1428 | This really serves a purpose only if running in an XTERM window | |
1429 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1430 | tty.main.c_iflag &= ~IGNBRK; |
1431 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1432 | #endif |
1433 | #else /* if not HAVE_TERMIO */ | |
1434 | #ifdef VMS | |
91bac16a | 1435 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1436 | if (meta_key) |
986ffb24 | 1437 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1438 | if (flow_control) |
91bac16a | 1439 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1440 | else |
91bac16a JB |
1441 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1442 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1443 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1444 | #ifndef DOS_NT |
4ec5cb58 | 1445 | Vtty_erase_char = tty.main.sg_erase; |
91bac16a | 1446 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1447 | if (meta_key) |
91bac16a JB |
1448 | tty.main.sg_flags |= ANYP; |
1449 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1450 | #endif /* not DOS_NT */ |
86a5659e JB |
1451 | #endif /* not VMS (BSD, that is) */ |
1452 | #endif /* not HAVE_TERMIO */ | |
1453 | ||
91bac16a JB |
1454 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1455 | and turn off start and stop chars, etc. If not going to use | |
1456 | CBREAK mode, do this anyway so as to turn off local flow | |
1457 | control for user coming over network on 4.2; in this case, | |
1458 | only t_stopc and t_startc really matter. */ | |
1459 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1460 | #ifdef HAVE_TCHARS |
91bac16a JB |
1461 | /* Note: if not using CBREAK mode, it makes no difference how we |
1462 | set this */ | |
1463 | tty.tchars = new_tchars; | |
1464 | tty.tchars.t_intrc = quit_char; | |
1465 | if (flow_control) | |
1466 | { | |
1467 | tty.tchars.t_startc = '\021'; | |
1468 | tty.tchars.t_stopc = '\023'; | |
1469 | } | |
1470 | ||
91bac16a | 1471 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1472 | #ifdef ultrix |
1473 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1474 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1475 | tty.lmode &= ~LLITOUT; | |
1476 | #endif | |
91bac16a JB |
1477 | |
1478 | #ifdef BSD4_1 | |
1479 | lmode = tty.lmode; | |
1480 | #endif | |
1481 | ||
50b8cf60 | 1482 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1483 | #endif /* not HAVE_TERMIO */ |
1484 | ||
50b8cf60 | 1485 | #ifdef HAVE_LTCHARS |
91bac16a | 1486 | tty.ltchars = new_ltchars; |
50b8cf60 | 1487 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1488 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1489 | if (!term_initted) |
1490 | internal_terminal_init (); | |
207bdbdb RS |
1491 | dos_ttraw (); |
1492 | #endif | |
91bac16a JB |
1493 | |
1494 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1495 | |
1496 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1497 | we have an unlocked terminal at the start. */ |
91bac16a | 1498 | |
86a5659e | 1499 | #ifdef TCXONC |
64e971c3 | 1500 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1501 | #endif |
1502 | #ifndef APOLLO | |
1503 | #ifdef TIOCSTART | |
64e971c3 | 1504 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1505 | #endif |
1506 | #endif | |
1507 | ||
d228f207 | 1508 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1509 | #ifdef TCOON |
d228f207 RS |
1510 | if (!flow_control) tcflow (input_fd, TCOON); |
1511 | #endif | |
51417996 | 1512 | #endif |
d228f207 | 1513 | |
b97ab886 | 1514 | #ifdef AIXHFT |
86a5659e JB |
1515 | hft_init (); |
1516 | #ifdef IBMR2AIX | |
1517 | { | |
1518 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1519 | to be only LF. This is the way that is done. */ | |
1520 | struct termio tty; | |
1521 | ||
1522 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1523 | write (1, "\033[20l", 5); | |
1524 | } | |
1525 | #endif | |
b97ab886 | 1526 | #endif /* AIXHFT */ |
86a5659e | 1527 | |
86a5659e JB |
1528 | #ifdef VMS |
1529 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1530 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1531 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1532 | */ | |
1533 | queue_kbd_input (0); | |
1534 | #endif /* VMS */ | |
1535 | } | |
1536 | ||
1537 | #ifdef F_SETFL | |
46f2fdac | 1538 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1539 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1540 | if (interrupt_input |
1541 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1542 | { |
64e971c3 RS |
1543 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1544 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1545 | init_sigio (input_fd); |
86a5659e JB |
1546 | } |
1547 | #endif /* F_GETOWN */ | |
46f2fdac | 1548 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1549 | #endif /* F_SETFL */ |
1550 | ||
1551 | #ifdef BSD4_1 | |
1552 | if (interrupt_input) | |
23dab951 | 1553 | init_sigio (input_fd); |
86a5659e JB |
1554 | #endif |
1555 | ||
1556 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1557 | #undef _IOFBF | |
1558 | #endif | |
1559 | #ifdef _IOFBF | |
1560 | /* This symbol is defined on recent USG systems. | |
1561 | Someone says without this call USG won't really buffer the file | |
1562 | even with a call to setbuf. */ | |
1563 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1564 | #else | |
1565 | setbuf (stdout, _sobuf); | |
1566 | #endif | |
23cafe43 | 1567 | #ifdef HAVE_WINDOW_SYSTEM |
c4295188 KS |
1568 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1569 | needs the initialization code below. */ | |
ad00c243 GV |
1570 | if (EQ (Vwindow_system, Qnil) |
1571 | #ifndef WINDOWSNT | |
1572 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1573 | hook, but still need the rest of the initialization code below. */ | |
1574 | && (! read_socket_hook) | |
1575 | #endif | |
1576 | ) | |
c4295188 | 1577 | #endif |
4b311aaf RS |
1578 | set_terminal_modes (); |
1579 | ||
86a5659e JB |
1580 | if (term_initted && no_redraw_on_reenter) |
1581 | { | |
1582 | if (display_completed) | |
1583 | direct_output_forward_char (0); | |
1584 | } | |
1585 | else | |
1586 | { | |
0137dbf7 | 1587 | frame_garbaged = 1; |
0137dbf7 JB |
1588 | if (FRAMEP (Vterminal_frame)) |
1589 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e | 1590 | } |
91bac16a | 1591 | |
86a5659e JB |
1592 | term_initted = 1; |
1593 | } | |
1594 | ||
1595 | /* Return nonzero if safe to use tabs in output. | |
1596 | At the time this is called, init_sys_modes has not been done yet. */ | |
1597 | ||
1598 | tabs_safe_p () | |
1599 | { | |
91bac16a JB |
1600 | struct emacs_tty tty; |
1601 | ||
1602 | EMACS_GET_TTY (input_fd, &tty); | |
1603 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1604 | } |
73d5358f | 1605 | \f |
86a5659e | 1606 | /* Get terminal size from system. |
73d5358f RS |
1607 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1608 | We store 0 if there's no valid information. */ | |
86a5659e | 1609 | |
08633194 | 1610 | void |
0137dbf7 | 1611 | get_frame_size (widthp, heightp) |
86a5659e JB |
1612 | int *widthp, *heightp; |
1613 | { | |
86a5659e | 1614 | |
86a5659e | 1615 | #ifdef TIOCGWINSZ |
91bac16a JB |
1616 | |
1617 | /* BSD-style. */ | |
86a5659e | 1618 | struct winsize size; |
91bac16a JB |
1619 | |
1620 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1621 | *widthp = *heightp = 0; | |
1622 | else | |
1623 | { | |
1624 | *widthp = size.ws_col; | |
1625 | *heightp = size.ws_row; | |
1626 | } | |
1627 | ||
1628 | #else | |
1629 | #ifdef TIOCGSIZE | |
1630 | ||
1631 | /* SunOS - style. */ | |
1632 | struct ttysize size; | |
1633 | ||
1634 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1635 | *widthp = *heightp = 0; | |
1636 | else | |
1637 | { | |
1638 | *widthp = size.ts_cols; | |
1639 | *heightp = size.ts_lines; | |
1640 | } | |
1641 | ||
1642 | #else | |
86a5659e | 1643 | #ifdef VMS |
91bac16a JB |
1644 | |
1645 | struct sensemode tty; | |
1646 | ||
1647 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1648 | &tty.class, 12, 0, 0, 0, 0); |
1649 | *widthp = tty.scr_wid; | |
1650 | *heightp = tty.scr_len; | |
91bac16a | 1651 | |
207bdbdb RS |
1652 | #else |
1653 | #ifdef MSDOS | |
1654 | *widthp = ScreenCols (); | |
1655 | *heightp = ScreenRows (); | |
86a5659e JB |
1656 | #else /* system doesn't know size */ |
1657 | *widthp = 0; | |
1658 | *heightp = 0; | |
207bdbdb | 1659 | #endif |
91bac16a JB |
1660 | |
1661 | #endif /* not VMS */ | |
1662 | #endif /* not SunOS-style */ | |
1663 | #endif /* not BSD-style */ | |
86a5659e | 1664 | } |
91bac16a | 1665 | |
73d5358f RS |
1666 | /* Set the logical window size associated with descriptor FD |
1667 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1668 | ||
1669 | int | |
1670 | set_window_size (fd, height, width) | |
1671 | int fd, height, width; | |
1672 | { | |
1673 | #ifdef TIOCSWINSZ | |
1674 | ||
1675 | /* BSD-style. */ | |
1676 | struct winsize size; | |
1677 | size.ws_row = height; | |
1678 | size.ws_col = width; | |
1679 | ||
1680 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1681 | return 0; /* error */ | |
1682 | else | |
1683 | return 1; | |
1684 | ||
1685 | #else | |
1686 | #ifdef TIOCSSIZE | |
1687 | ||
1688 | /* SunOS - style. */ | |
1689 | struct ttysize size; | |
1690 | size.ts_lines = height; | |
1691 | size.ts_cols = width; | |
1692 | ||
1693 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1694 | return 0; | |
1695 | else | |
1696 | return 1; | |
1697 | #else | |
1698 | return -1; | |
1699 | #endif /* not SunOS-style */ | |
1700 | #endif /* not BSD-style */ | |
1701 | } | |
1702 | ||
86a5659e | 1703 | \f |
91bac16a | 1704 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1705 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
08633194 | 1706 | void |
86a5659e JB |
1707 | reset_sys_modes () |
1708 | { | |
1709 | if (noninteractive) | |
1710 | { | |
1711 | fflush (stdout); | |
1712 | return; | |
1713 | } | |
1714 | if (!term_initted) | |
1715 | return; | |
23cafe43 | 1716 | #ifdef HAVE_WINDOW_SYSTEM |
87485d6f MW |
1717 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore |
1718 | needs the clean-up code below. */ | |
ad00c243 GV |
1719 | if (!EQ (Vwindow_system, Qnil) |
1720 | #ifndef WINDOWSNT | |
1721 | /* When running in tty mode on NT/Win95, we have a read_socket | |
1722 | hook, but still need the rest of the clean-up code below. */ | |
1723 | || read_socket_hook | |
1724 | #endif | |
1725 | ) | |
86a5659e | 1726 | return; |
87485d6f | 1727 | #endif |
0137dbf7 JB |
1728 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1729 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1730 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1731 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
b97ab886 | 1732 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e JB |
1733 | { |
1734 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1735 | do the LF only. Now, we need to reset it. */ | |
1736 | struct termio tty; | |
1737 | ||
1738 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1739 | write (1, "\033[20h", 5); | |
1740 | } | |
1741 | #endif | |
1742 | ||
1743 | reset_terminal_modes (); | |
1744 | fflush (stdout); | |
2a633456 | 1745 | #ifdef BSD_SYSTEM |
86a5659e JB |
1746 | #ifndef BSD4_1 |
1747 | /* Avoid possible loss of output when changing terminal modes. */ | |
1748 | fsync (fileno (stdout)); | |
1749 | #endif | |
1750 | #endif | |
91bac16a | 1751 | |
86a5659e | 1752 | #ifdef F_SETFL |
46f2fdac | 1753 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1754 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1755 | if (interrupt_input) |
1756 | { | |
1757 | reset_sigio (); | |
64e971c3 | 1758 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1759 | } |
1760 | #endif /* F_SETOWN */ | |
46f2fdac | 1761 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1762 | #ifdef O_NDELAY |
1763 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1764 | #endif | |
86a5659e JB |
1765 | #endif /* F_SETFL */ |
1766 | #ifdef BSD4_1 | |
1767 | if (interrupt_input) | |
1768 | reset_sigio (); | |
1769 | #endif /* BSD4_1 */ | |
91bac16a | 1770 | |
7e32a4fb KH |
1771 | if (old_tty_valid) |
1772 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) | |
1773 | ; | |
86a5659e | 1774 | |
207bdbdb RS |
1775 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1776 | dos_ttcooked (); | |
1777 | #endif | |
1778 | ||
441f6399 RS |
1779 | #ifdef SET_LINE_DISCIPLINE |
1780 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1781 | A different old line discipline is therefore not restored, yet. | |
1782 | Restore the old line discipline by hand. */ | |
1783 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1784 | #endif | |
1785 | ||
b97ab886 | 1786 | #ifdef AIXHFT |
86a5659e JB |
1787 | hft_reset (); |
1788 | #endif | |
9ae8f997 | 1789 | |
0ba73609 | 1790 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1791 | widen_foreground_group (); |
1792 | #endif | |
86a5659e JB |
1793 | } |
1794 | \f | |
1795 | #ifdef HAVE_PTYS | |
1796 | ||
1797 | /* Set up the proper status flags for use of a pty. */ | |
1798 | ||
08633194 | 1799 | void |
86a5659e JB |
1800 | setup_pty (fd) |
1801 | int fd; | |
1802 | { | |
1803 | /* I'm told that TOICREMOTE does not mean control chars | |
1804 | "can't be sent" but rather that they don't have | |
1805 | input-editing or signaling effects. | |
1806 | That should be good, because we have other ways | |
1807 | to do those things in Emacs. | |
1808 | However, telnet mode seems not to work on 4.2. | |
1809 | So TIOCREMOTE is turned off now. */ | |
1810 | ||
1811 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1812 | will hang. In particular, the "timeout" feature (which | |
1813 | causes a read to return if there is no data available) | |
1814 | does this. Also it is known that telnet mode will hang | |
1815 | in such a way that Emacs must be stopped (perhaps this | |
1816 | is the same problem). | |
1817 | ||
1818 | If TIOCREMOTE is turned off, then there is a bug in | |
1819 | hp-ux which sometimes loses data. Apparently the | |
1820 | code which blocks the master process when the internal | |
1821 | buffer fills up does not work. Other than this, | |
1822 | though, everything else seems to work fine. | |
1823 | ||
1824 | Since the latter lossage is more benign, we may as well | |
1825 | lose that way. -- cph */ | |
1826 | #ifdef FIONBIO | |
1827 | #ifdef SYSV_PTYS | |
1828 | { | |
1829 | int on = 1; | |
1830 | ioctl (fd, FIONBIO, &on); | |
1831 | } | |
1832 | #endif | |
1833 | #endif | |
1834 | #ifdef IBMRTAIX | |
1835 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1836 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1837 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1838 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1839 | /* change this behavior, but I'm not going to hold my breath. */ | |
1840 | signal (SIGHUP, SIG_IGN); | |
1841 | #endif | |
1842 | } | |
1843 | #endif /* HAVE_PTYS */ | |
1844 | \f | |
1845 | #ifdef VMS | |
1846 | ||
1847 | /* Assigning an input channel is done at the start of Emacs execution. | |
1848 | This is called each time Emacs is resumed, also, but does nothing | |
1849 | because input_chain is no longer zero. */ | |
1850 | ||
1851 | init_vms_input () | |
1852 | { | |
1853 | int status; | |
1854 | ||
91bac16a | 1855 | if (input_fd == 0) |
86a5659e | 1856 | { |
91bac16a | 1857 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1858 | if (! (status & 1)) |
1859 | LIB$STOP (status); | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /* Deassigning the input channel is done before exiting. */ | |
1864 | ||
1865 | stop_vms_input () | |
1866 | { | |
91bac16a | 1867 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1868 | } |
1869 | ||
1870 | short input_buffer; | |
1871 | ||
1872 | /* Request reading one character into the keyboard buffer. | |
1873 | This is done as soon as the buffer becomes empty. */ | |
1874 | ||
1875 | queue_kbd_input () | |
1876 | { | |
1877 | int status; | |
210b2b4f JB |
1878 | extern kbd_input_ast (); |
1879 | ||
86a5659e JB |
1880 | waiting_for_ast = 0; |
1881 | stop_input = 0; | |
91bac16a | 1882 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1883 | &input_iosb, kbd_input_ast, 1, |
1884 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1885 | } | |
1886 | ||
1887 | int input_count; | |
1888 | ||
1889 | /* Ast routine that is called when keyboard input comes in | |
1890 | in accord with the SYS$QIO above. */ | |
1891 | ||
1892 | kbd_input_ast () | |
1893 | { | |
1894 | register int c = -1; | |
1895 | int old_errno = errno; | |
ffd56f97 | 1896 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1897 | |
1898 | if (waiting_for_ast) | |
1899 | SYS$SETEF (input_ef); | |
1900 | waiting_for_ast = 0; | |
1901 | input_count++; | |
1902 | #ifdef ASTDEBUG | |
1903 | if (input_count == 25) | |
1904 | exit (1); | |
1905 | printf ("Ast # %d,", input_count); | |
1906 | printf (" iosb = %x, %x, %x, %x", | |
1907 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1908 | input_iosb.term); | |
1909 | #endif | |
1910 | if (input_iosb.offset) | |
1911 | { | |
1912 | c = input_buffer; | |
1913 | #ifdef ASTDEBUG | |
1914 | printf (", char = 0%o", c); | |
1915 | #endif | |
1916 | } | |
1917 | #ifdef ASTDEBUG | |
1918 | printf ("\n"); | |
1919 | fflush (stdout); | |
1920 | sleep (1); | |
1921 | #endif | |
1922 | if (! stop_input) | |
1923 | queue_kbd_input (); | |
1924 | if (c >= 0) | |
1925 | { | |
1926 | struct input_event e; | |
1927 | e.kind = ascii_keystroke; | |
c81d47b4 | 1928 | XSETINT (e.code, c); |
c81d47b4 | 1929 | XSETFRAME (e.frame_or_window, selected_frame); |
86a5659e JB |
1930 | kbd_buffer_store_event (&e); |
1931 | } | |
ffd56f97 JB |
1932 | if (input_available_clear_time) |
1933 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1934 | errno = old_errno; |
1935 | } | |
1936 | ||
1937 | /* Wait until there is something in kbd_buffer. */ | |
1938 | ||
1939 | wait_for_kbd_input () | |
1940 | { | |
1941 | extern int have_process_input, process_exited; | |
1942 | ||
1943 | /* If already something, avoid doing system calls. */ | |
1944 | if (detect_input_pending ()) | |
1945 | { | |
1946 | return; | |
1947 | } | |
1948 | /* Clear a flag, and tell ast routine above to set it. */ | |
1949 | SYS$CLREF (input_ef); | |
1950 | waiting_for_ast = 1; | |
1951 | /* Check for timing error: ast happened while we were doing that. */ | |
1952 | if (!detect_input_pending ()) | |
1953 | { | |
1954 | /* No timing error: wait for flag to be set. */ | |
1955 | set_waiting_for_input (0); | |
1956 | SYS$WFLOR (input_ef, input_eflist); | |
1957 | clear_waiting_for_input (0); | |
1958 | if (!detect_input_pending ()) | |
1959 | /* Check for subprocess input availability */ | |
1960 | { | |
1961 | int dsp = have_process_input || process_exited; | |
1962 | ||
1963 | SYS$CLREF (process_ef); | |
1964 | if (have_process_input) | |
1965 | process_command_input (); | |
1966 | if (process_exited) | |
1967 | process_exit (); | |
1968 | if (dsp) | |
1969 | { | |
1970 | update_mode_lines++; | |
56b18525 | 1971 | prepare_menu_bars (); |
86a5659e JB |
1972 | redisplay_preserve_echo_area (); |
1973 | } | |
1974 | } | |
1975 | } | |
1976 | waiting_for_ast = 0; | |
1977 | } | |
1978 | ||
1979 | /* Get rid of any pending QIO, when we are about to suspend | |
1980 | or when we want to throw away pending input. | |
1981 | We wait for a positive sign that the AST routine has run | |
1982 | and therefore there is no I/O request queued when we return. | |
1983 | SYS$SETAST is used to avoid a timing error. */ | |
1984 | ||
1985 | end_kbd_input () | |
1986 | { | |
1987 | #ifdef ASTDEBUG | |
1988 | printf ("At end_kbd_input.\n"); | |
1989 | fflush (stdout); | |
1990 | sleep (1); | |
1991 | #endif | |
1992 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
1993 | { | |
91bac16a | 1994 | SYS$CANCEL (input_fd); |
86a5659e JB |
1995 | return; |
1996 | } | |
1997 | ||
1998 | SYS$SETAST (0); | |
1999 | /* Clear a flag, and tell ast routine above to set it. */ | |
2000 | SYS$CLREF (input_ef); | |
2001 | waiting_for_ast = 1; | |
2002 | stop_input = 1; | |
91bac16a | 2003 | SYS$CANCEL (input_fd); |
86a5659e JB |
2004 | SYS$SETAST (1); |
2005 | SYS$WAITFR (input_ef); | |
2006 | waiting_for_ast = 0; | |
2007 | } | |
2008 | ||
2009 | /* Wait for either input available or time interval expiry. */ | |
2010 | ||
2011 | input_wait_timeout (timeval) | |
2012 | int timeval; /* Time to wait, in seconds */ | |
2013 | { | |
2014 | int time [2]; | |
2015 | static int zero = 0; | |
2016 | static int large = -10000000; | |
2017 | ||
2018 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2019 | ||
2020 | /* If already something, avoid doing system calls. */ | |
2021 | if (detect_input_pending ()) | |
2022 | { | |
2023 | return; | |
2024 | } | |
2025 | /* Clear a flag, and tell ast routine above to set it. */ | |
2026 | SYS$CLREF (input_ef); | |
2027 | waiting_for_ast = 1; | |
2028 | /* Check for timing error: ast happened while we were doing that. */ | |
2029 | if (!detect_input_pending ()) | |
2030 | { | |
2031 | /* No timing error: wait for flag to be set. */ | |
2032 | SYS$CANTIM (1, 0); | |
2033 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2034 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
2035 | } | |
2036 | waiting_for_ast = 0; | |
2037 | } | |
2038 | ||
2039 | /* The standard `sleep' routine works some other way | |
2040 | and it stops working if you have ever quit out of it. | |
2041 | This one continues to work. */ | |
2042 | ||
2043 | sys_sleep (timeval) | |
2044 | int timeval; | |
2045 | { | |
2046 | int time [2]; | |
2047 | static int zero = 0; | |
2048 | static int large = -10000000; | |
2049 | ||
2050 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
2051 | ||
2052 | SYS$CANTIM (1, 0); | |
2053 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
2054 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
2055 | } | |
2056 | ||
08633194 | 2057 | void |
23dab951 RS |
2058 | init_sigio (fd) |
2059 | int fd; | |
86a5659e JB |
2060 | { |
2061 | request_sigio (); | |
2062 | } | |
2063 | ||
2064 | reset_sigio () | |
2065 | { | |
2066 | unrequest_sigio (); | |
2067 | } | |
2068 | ||
08633194 | 2069 | void |
86a5659e JB |
2070 | request_sigio () |
2071 | { | |
2072 | croak ("request sigio"); | |
2073 | } | |
2074 | ||
08633194 | 2075 | void |
86a5659e JB |
2076 | unrequest_sigio () |
2077 | { | |
2078 | croak ("unrequest sigio"); | |
2079 | } | |
2080 | ||
2081 | #endif /* VMS */ | |
2082 | \f | |
2083 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
2084 | #ifndef CANNOT_DUMP | |
2085 | #define NEED_STARTS | |
2086 | #endif | |
2087 | ||
2088 | #ifndef SYSTEM_MALLOC | |
2089 | #ifndef NEED_STARTS | |
2090 | #define NEED_STARTS | |
2091 | #endif | |
2092 | #endif | |
2093 | ||
2094 | #ifdef NEED_STARTS | |
2095 | /* Some systems that cannot dump also cannot implement these. */ | |
2096 | ||
2097 | /* | |
2098 | * Return the address of the start of the text segment prior to | |
2099 | * doing an unexec. After unexec the return value is undefined. | |
2100 | * See crt0.c for further explanation and _start. | |
2101 | * | |
2102 | */ | |
2103 | ||
260fe597 | 2104 | #ifndef HAVE_TEXT_START |
86a5659e JB |
2105 | char * |
2106 | start_of_text () | |
2107 | { | |
2108 | #ifdef TEXT_START | |
2109 | return ((char *) TEXT_START); | |
2110 | #else | |
2111 | #ifdef GOULD | |
2112 | extern csrt (); | |
2113 | return ((char *) csrt); | |
2114 | #else /* not GOULD */ | |
2115 | extern int _start (); | |
2116 | return ((char *) _start); | |
2117 | #endif /* GOULD */ | |
2118 | #endif /* TEXT_START */ | |
2119 | } | |
260fe597 | 2120 | #endif /* not HAVE_TEXT_START */ |
86a5659e JB |
2121 | |
2122 | /* | |
2123 | * Return the address of the start of the data segment prior to | |
2124 | * doing an unexec. After unexec the return value is undefined. | |
2125 | * See crt0.c for further information and definition of data_start. | |
2126 | * | |
2127 | * Apparently, on BSD systems this is etext at startup. On | |
2128 | * USG systems (swapping) this is highly mmu dependent and | |
2129 | * is also dependent on whether or not the program is running | |
2130 | * with shared text. Generally there is a (possibly large) | |
2131 | * gap between end of text and start of data with shared text. | |
2132 | * | |
2133 | * On Uniplus+ systems with shared text, data starts at a | |
2134 | * fixed address. Each port (from a given oem) is generally | |
2135 | * different, and the specific value of the start of data can | |
2136 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2137 | * however the method outlined in crt0.c seems to be more portable. | |
2138 | * | |
2139 | * Probably what will have to happen when a USG unexec is available, | |
2140 | * at least on UniPlus, is temacs will have to be made unshared so | |
2141 | * that text and data are contiguous. Then once loadup is complete, | |
2142 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 2143 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
2144 | * will be patched by unexec to the correct value. |
2145 | * | |
2146 | */ | |
2147 | ||
2148 | char * | |
2149 | start_of_data () | |
2150 | { | |
2151 | #ifdef DATA_START | |
2152 | return ((char *) DATA_START); | |
6c65530f JB |
2153 | #else |
2154 | #ifdef ORDINARY_LINK | |
2155 | /* | |
2156 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2157 | * data_start isn't defined. We take the address of environ, which | |
2158 | * is known to live at or near the start of the system crt0.c, and | |
2159 | * we don't sweat the handful of bytes that might lose. | |
2160 | */ | |
2161 | extern char **environ; | |
2162 | ||
2163 | return((char *) &environ); | |
86a5659e JB |
2164 | #else |
2165 | extern int data_start; | |
2166 | return ((char *) &data_start); | |
6c65530f JB |
2167 | #endif /* ORDINARY_LINK */ |
2168 | #endif /* DATA_START */ | |
86a5659e JB |
2169 | } |
2170 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
2171 | ||
2172 | #ifndef CANNOT_DUMP | |
2173 | /* Some systems that cannot dump also cannot implement these. */ | |
2174 | ||
2175 | /* | |
2176 | * Return the address of the end of the text segment prior to | |
2177 | * doing an unexec. After unexec the return value is undefined. | |
2178 | */ | |
2179 | ||
2180 | char * | |
2181 | end_of_text () | |
2182 | { | |
2183 | #ifdef TEXT_END | |
2184 | return ((char *) TEXT_END); | |
2185 | #else | |
2186 | extern int etext; | |
2187 | return ((char *) &etext); | |
2188 | #endif | |
2189 | } | |
2190 | ||
2191 | /* | |
2192 | * Return the address of the end of the data segment prior to | |
2193 | * doing an unexec. After unexec the return value is undefined. | |
2194 | */ | |
2195 | ||
2196 | char * | |
2197 | end_of_data () | |
2198 | { | |
2199 | #ifdef DATA_END | |
2200 | return ((char *) DATA_END); | |
2201 | #else | |
2202 | extern int edata; | |
2203 | return ((char *) &edata); | |
2204 | #endif | |
2205 | } | |
2206 | ||
2207 | #endif /* not CANNOT_DUMP */ | |
2208 | \f | |
c0c86835 KH |
2209 | /* init_system_name sets up the string for the Lisp function |
2210 | system-name to return. */ | |
86a5659e JB |
2211 | |
2212 | #ifdef BSD4_1 | |
2213 | #include <whoami.h> | |
2214 | #endif | |
2215 | ||
c0c86835 | 2216 | extern Lisp_Object Vsystem_name; |
86a5659e | 2217 | |
f8a80313 | 2218 | #ifndef BSD4_1 |
f8a80313 RS |
2219 | #ifndef VMS |
2220 | #ifdef HAVE_SOCKETS | |
2221 | #include <sys/socket.h> | |
2222 | #include <netdb.h> | |
2223 | #endif /* HAVE_SOCKETS */ | |
2224 | #endif /* not VMS */ | |
f8a80313 RS |
2225 | #endif /* not BSD4_1 */ |
2226 | ||
c0c86835 KH |
2227 | void |
2228 | init_system_name () | |
86a5659e | 2229 | { |
86a5659e | 2230 | #ifdef BSD4_1 |
c0c86835 | 2231 | Vsystem_name = build_string (sysname); |
67004ffb | 2232 | #else |
67004ffb | 2233 | #ifdef VMS |
c0c86835 KH |
2234 | char *sp, *end; |
2235 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2236 | Vsystem_name = build_string ("vax-vms"); | |
2237 | else if ((end = index (sp, ':')) == 0) | |
2238 | Vsystem_name = build_string (sp); | |
2239 | else | |
2240 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2241 | #else |
210b2b4f | 2242 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2243 | struct utsname uts; |
2244 | uname (&uts); | |
2245 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2246 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 2247 | unsigned int hostname_size = 256; |
c0c86835 KH |
2248 | char *hostname = (char *) alloca (hostname_size); |
2249 | ||
2250 | /* Try to get the host name; if the buffer is too short, try | |
2251 | again. Apparently, the only indication gethostname gives of | |
2252 | whether the buffer was large enough is the presence or absence | |
2253 | of a '\0' in the string. Eech. */ | |
2254 | for (;;) | |
2255 | { | |
2256 | gethostname (hostname, hostname_size - 1); | |
2257 | hostname[hostname_size - 1] = '\0'; | |
2258 | ||
2259 | /* Was the buffer large enough for the '\0'? */ | |
2260 | if (strlen (hostname) < hostname_size - 1) | |
2261 | break; | |
2262 | ||
2263 | hostname_size <<= 1; | |
2264 | hostname = (char *) alloca (hostname_size); | |
2265 | } | |
67004ffb | 2266 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2267 | /* Turn the hostname into the official, fully-qualified hostname. |
2268 | Don't do this if we're going to dump; this can confuse system | |
2269 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2270 | #ifndef CANNOT_DUMP |
c0c86835 | 2271 | if (initialized) |
67004ffb | 2272 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
2273 | if (! index (hostname, '.')) |
2274 | { | |
2275 | struct hostent *hp; | |
2276 | int count; | |
2277 | for (count = 0;; count++) | |
2278 | { | |
e24f1d55 | 2279 | #ifdef TRY_AGAIN |
960d894c | 2280 | h_errno = 0; |
e24f1d55 | 2281 | #endif |
960d894c | 2282 | hp = gethostbyname (hostname); |
efa04277 | 2283 | #ifdef TRY_AGAIN |
960d894c KH |
2284 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
2285 | #endif | |
2286 | break; | |
2287 | if (count >= 5) | |
2288 | break; | |
2289 | Fsleep_for (make_number (1), Qnil); | |
2290 | } | |
2291 | if (hp) | |
2292 | { | |
2293 | char *fqdn = (char *) hp->h_name; | |
2294 | char *p; | |
2295 | ||
2296 | if (!index (fqdn, '.')) | |
2297 | { | |
2298 | /* We still don't have a fully qualified domain name. | |
2299 | Try to find one in the list of alternate names */ | |
2300 | char **alias = hp->h_aliases; | |
2301 | while (*alias && !index (*alias, '.')) | |
2302 | alias++; | |
2303 | if (*alias) | |
2304 | fqdn = *alias; | |
2305 | } | |
2306 | hostname = fqdn; | |
ab1649fe | 2307 | #if 0 |
960d894c KH |
2308 | /* Convert the host name to lower case. */ |
2309 | /* Using ctype.h here would introduce a possible locale | |
2310 | dependence that is probably wrong for hostnames. */ | |
2311 | p = hostname; | |
2312 | while (*p) | |
2313 | { | |
2314 | if (*p >= 'A' && *p <= 'Z') | |
2315 | *p += 'a' - 'A'; | |
2316 | p++; | |
2317 | } | |
2318 | #endif | |
2319 | } | |
2320 | } | |
67004ffb | 2321 | #endif /* HAVE_SOCKETS */ |
6250a9db KH |
2322 | /* We used to try using getdomainname here, |
2323 | but NIIBE Yutaka <gniibe@etl.go.jp> says that | |
0b93aa53 RS |
2324 | getdomainname gets the NIS/YP domain which often is not the same |
2325 | as in Internet domain name. */ | |
6250a9db KH |
2326 | #if 0 /* Turned off because sysinfo is not really likely to return the |
2327 | correct Internet domain. */ | |
0b93aa53 | 2328 | #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) |
b05af5d3 PE |
2329 | if (! index (hostname, '.')) |
2330 | { | |
2331 | /* The hostname is not fully qualified. Append the domain name. */ | |
2332 | ||
2333 | int hostlen = strlen (hostname); | |
2334 | int domain_size = 256; | |
2335 | ||
2336 | for (;;) | |
2337 | { | |
825e7e55 RS |
2338 | char *domain = (char *) alloca (domain_size + 1); |
2339 | char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); | |
b05af5d3 PE |
2340 | int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); |
2341 | if (sys_domain_size <= 0) | |
2342 | break; | |
2343 | if (domain_size < sys_domain_size) | |
2344 | { | |
2345 | domain_size = sys_domain_size; | |
2346 | continue; | |
2347 | } | |
b05af5d3 | 2348 | strcpy (fqdn, hostname); |
825e7e55 RS |
2349 | if (domain[0] == '.') |
2350 | strcpy (fqdn + hostlen, domain); | |
9b80a5aa | 2351 | else if (domain[0] != 0) |
825e7e55 RS |
2352 | { |
2353 | fqdn[hostlen] = '.'; | |
2354 | strcpy (fqdn + hostlen + 1, domain); | |
2355 | } | |
b05af5d3 PE |
2356 | hostname = fqdn; |
2357 | break; | |
2358 | } | |
2359 | } | |
0b93aa53 | 2360 | #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ |
6250a9db | 2361 | #endif /* 0 */ |
c0c86835 | 2362 | Vsystem_name = build_string (hostname); |
67004ffb | 2363 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2364 | #endif /* VMS */ |
67004ffb | 2365 | #endif /* BSD4_1 */ |
c0c86835 KH |
2366 | { |
2367 | unsigned char *p; | |
2368 | for (p = XSTRING (Vsystem_name)->data; *p; p++) | |
2369 | if (*p == ' ' || *p == '\t') | |
2370 | *p = '-'; | |
2371 | } | |
67004ffb | 2372 | } |
86a5659e | 2373 | \f |
7964ba9e | 2374 | #ifndef MSDOS |
86a5659e | 2375 | #ifndef VMS |
86d1f23a | 2376 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2377 | |
86d1f23a KH |
2378 | #include "sysselect.h" |
2379 | #undef select | |
2380 | ||
2381 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2382 | /* Cause explanatory error message at compile time, |
2383 | since the select emulation is not good enough for X. */ | |
2384 | int *x = &x_windows_lose_if_no_select_system_call; | |
2385 | #endif | |
2386 | ||
2387 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2388 | * Only checks read descriptors. | |
2389 | */ | |
2390 | /* How long to wait between checking fds in select */ | |
2391 | #define SELECT_PAUSE 1 | |
2392 | int select_alarmed; | |
2393 | ||
2394 | /* For longjmp'ing back to read_input_waiting. */ | |
2395 | ||
2396 | jmp_buf read_alarm_throw; | |
2397 | ||
2398 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2399 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2400 | ||
2401 | int read_alarm_should_throw; | |
2402 | ||
2403 | SIGTYPE | |
2404 | select_alarm () | |
2405 | { | |
2406 | select_alarmed = 1; | |
2407 | #ifdef BSD4_1 | |
2408 | sigrelse (SIGALRM); | |
2409 | #else /* not BSD4_1 */ | |
2410 | signal (SIGALRM, SIG_IGN); | |
2411 | #endif /* not BSD4_1 */ | |
2412 | if (read_alarm_should_throw) | |
2413 | longjmp (read_alarm_throw, 1); | |
2414 | } | |
2415 | ||
fe03522b | 2416 | #ifndef WINDOWSNT |
86a5659e JB |
2417 | /* Only rfds are checked. */ |
2418 | int | |
86d1f23a | 2419 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2420 | int nfds; |
86d1f23a KH |
2421 | SELECT_TYPE *rfds, *wfds, *efds; |
2422 | EMACS_TIME *timeout; | |
86a5659e | 2423 | { |
86d1f23a KH |
2424 | int ravail = 0, old_alarm; |
2425 | SELECT_TYPE orfds; | |
2426 | int timeoutval; | |
2427 | int *local_timeout; | |
86a5659e JB |
2428 | extern int proc_buffered_char[]; |
2429 | #ifndef subprocesses | |
2430 | int process_tick = 0, update_tick = 0; | |
2431 | #else | |
2432 | extern int process_tick, update_tick; | |
2433 | #endif | |
2434 | SIGTYPE (*old_trap) (); | |
2435 | unsigned char buf; | |
2436 | ||
86d1f23a KH |
2437 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2438 | /* If we're using X, then the native select will work; we only need the | |
2439 | emulation for non-X usage. */ | |
2440 | if (!NILP (Vwindow_system)) | |
2441 | return select (nfds, rfds, wfds, efds, timeout); | |
2442 | #endif | |
2443 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2444 | local_timeout = &timeoutval; | |
2445 | FD_ZERO (&orfds); | |
86a5659e JB |
2446 | if (rfds) |
2447 | { | |
2448 | orfds = *rfds; | |
86d1f23a | 2449 | FD_ZERO (rfds); |
86a5659e JB |
2450 | } |
2451 | if (wfds) | |
86d1f23a | 2452 | FD_ZERO (wfds); |
86a5659e | 2453 | if (efds) |
86d1f23a | 2454 | FD_ZERO (efds); |
86a5659e JB |
2455 | |
2456 | /* If we are looking only for the terminal, with no timeout, | |
2457 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2458 | if (*local_timeout == 100000 && process_tick == update_tick |
2459 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2460 | { |
86d1f23a KH |
2461 | int fd; |
2462 | for (fd = 1; fd < nfds; ++fd) | |
2463 | if (FD_ISSET (fd, &orfds)) | |
2464 | goto hardway; | |
86a5659e JB |
2465 | if (! detect_input_pending ()) |
2466 | read_input_waiting (); | |
86d1f23a | 2467 | FD_SET (0, rfds); |
86a5659e JB |
2468 | return 1; |
2469 | } | |
2470 | ||
86d1f23a | 2471 | hardway: |
86a5659e JB |
2472 | /* Once a second, till the timer expires, check all the flagged read |
2473 | * descriptors to see if any input is available. If there is some then | |
2474 | * set the corresponding bit in the return copy of rfds. | |
2475 | */ | |
2476 | while (1) | |
2477 | { | |
86d1f23a | 2478 | register int to_check, fd; |
86a5659e JB |
2479 | |
2480 | if (rfds) | |
2481 | { | |
86d1f23a | 2482 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2483 | { |
86d1f23a | 2484 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2485 | { |
2486 | int avail = 0, status = 0; | |
2487 | ||
86d1f23a | 2488 | if (fd == 0) |
86a5659e JB |
2489 | avail = detect_input_pending (); /* Special keyboard handler */ |
2490 | else | |
2491 | { | |
2492 | #ifdef FIONREAD | |
2493 | status = ioctl (fd, FIONREAD, &avail); | |
2494 | #else /* no FIONREAD */ | |
2495 | /* Hoping it will return -1 if nothing available | |
2496 | or 0 if all 0 chars requested are read. */ | |
2497 | if (proc_buffered_char[fd] >= 0) | |
2498 | avail = 1; | |
2499 | else | |
2500 | { | |
2501 | avail = read (fd, &buf, 1); | |
2502 | if (avail > 0) | |
2503 | proc_buffered_char[fd] = buf; | |
2504 | } | |
2505 | #endif /* no FIONREAD */ | |
2506 | } | |
2507 | if (status >= 0 && avail > 0) | |
2508 | { | |
86d1f23a | 2509 | FD_SET (fd, rfds); |
86a5659e JB |
2510 | ravail++; |
2511 | } | |
2512 | } | |
2513 | } | |
2514 | } | |
2515 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2516 | break; | |
2517 | old_alarm = alarm (0); | |
34567704 | 2518 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2519 | select_alarmed = 0; |
2520 | alarm (SELECT_PAUSE); | |
2521 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2522 | while (select_alarmed == 0 && *local_timeout != 0 | |
2523 | && process_tick == update_tick) | |
2524 | { | |
2525 | /* If we are interested in terminal input, | |
2526 | wait by reading the terminal. | |
2527 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2528 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2529 | { |
2530 | read_input_waiting (); | |
2531 | if (detect_input_pending ()) | |
2532 | select_alarmed = 1; | |
2533 | } | |
2534 | else | |
2535 | pause (); | |
2536 | } | |
2537 | (*local_timeout) -= SELECT_PAUSE; | |
2538 | /* Reset the old alarm if there was one */ | |
2539 | alarm (0); | |
2540 | signal (SIGALRM, old_trap); | |
2541 | if (old_alarm != 0) | |
2542 | { | |
2543 | /* Reset or forge an interrupt for the original handler. */ | |
2544 | old_alarm -= SELECT_PAUSE; | |
2545 | if (old_alarm <= 0) | |
2546 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2547 | else | |
2548 | alarm (old_alarm); | |
2549 | } | |
2550 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2551 | break; | |
2552 | } | |
2553 | return ravail; | |
2554 | } | |
fe03522b | 2555 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2556 | |
2557 | /* Read keyboard input into the standard buffer, | |
2558 | waiting for at least one character. */ | |
2559 | ||
23cafe43 GV |
2560 | /* Make all keyboard buffers much bigger when using a window system. */ |
2561 | #ifdef HAVE_WINDOW_SYSTEM | |
86a5659e JB |
2562 | #define BUFFER_SIZE_FACTOR 16 |
2563 | #else | |
2564 | #define BUFFER_SIZE_FACTOR 1 | |
2565 | #endif | |
2566 | ||
2567 | read_input_waiting () | |
2568 | { | |
86a5659e | 2569 | struct input_event e; |
34567704 JB |
2570 | int nread, i; |
2571 | extern int quit_char; | |
86a5659e JB |
2572 | |
2573 | if (read_socket_hook) | |
2574 | { | |
f4a7e5bd RS |
2575 | struct input_event buf[256]; |
2576 | ||
86a5659e JB |
2577 | read_alarm_should_throw = 0; |
2578 | if (! setjmp (read_alarm_throw)) | |
f4a7e5bd | 2579 | nread = (*read_socket_hook) (0, buf, 256, 1, 0); |
86a5659e JB |
2580 | else |
2581 | nread = -1; | |
f4a7e5bd RS |
2582 | |
2583 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2584 | for (i = 0; i < nread; i++) | |
2585 | { | |
2586 | kbd_buffer_store_event (&buf[i]); | |
2587 | /* Don't look at input that follows a C-g too closely. | |
2588 | This reduces lossage due to autorepeat on C-g. */ | |
2589 | if (buf[i].kind == ascii_keystroke | |
30bef8ec | 2590 | && buf[i].code == quit_char) |
f4a7e5bd RS |
2591 | break; |
2592 | } | |
86a5659e JB |
2593 | } |
2594 | else | |
86a5659e | 2595 | { |
f4a7e5bd RS |
2596 | char buf[3]; |
2597 | nread = read (fileno (stdin), buf, 1); | |
2598 | ||
2599 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2600 | e.kind = ascii_keystroke; | |
bd513d9d | 2601 | XSETFRAME (e.frame_or_window, selected_frame); |
f4a7e5bd RS |
2602 | e.modifiers = 0; |
2603 | for (i = 0; i < nread; i++) | |
a00d5589 | 2604 | { |
f4a7e5bd RS |
2605 | /* Convert chars > 0177 to meta events if desired. |
2606 | We do this under the same conditions that read_avail_input does. */ | |
2607 | if (read_socket_hook == 0) | |
2608 | { | |
2609 | /* If the user says she has a meta key, then believe her. */ | |
2610 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2611 | e.modifiers = meta_modifier; | |
2612 | if (meta_key != 2) | |
2613 | buf[i] &= ~0x80; | |
2614 | } | |
b95520f5 | 2615 | |
c81d47b4 | 2616 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2617 | kbd_buffer_store_event (&e); |
2618 | /* Don't look at input that follows a C-g too closely. | |
2619 | This reduces lossage due to autorepeat on C-g. */ | |
2620 | if (buf[i] == quit_char) | |
2621 | break; | |
2622 | } | |
86a5659e JB |
2623 | } |
2624 | } | |
2625 | ||
2626 | #endif /* not HAVE_SELECT */ | |
2627 | #endif /* not VMS */ | |
7964ba9e | 2628 | #endif /* not MSDOS */ |
86a5659e JB |
2629 | \f |
2630 | #ifdef BSD4_1 | |
86a5659e JB |
2631 | /* |
2632 | * Partially emulate 4.2 open call. | |
2633 | * open is defined as this in 4.1. | |
2634 | * | |
2635 | * - added by Michael Bloom @ Citicorp/TTI | |
2636 | * | |
2637 | */ | |
2638 | ||
2639 | int | |
2640 | sys_open (path, oflag, mode) | |
2641 | char *path; | |
2642 | int oflag, mode; | |
2643 | { | |
2644 | if (oflag & O_CREAT) | |
2645 | return creat (path, mode); | |
2646 | else | |
2647 | return open (path, oflag); | |
2648 | } | |
2649 | ||
08633194 | 2650 | void |
23dab951 RS |
2651 | init_sigio (fd) |
2652 | int fd; | |
86a5659e JB |
2653 | { |
2654 | if (noninteractive) | |
2655 | return; | |
2656 | lmode = LINTRUP | lmode; | |
23dab951 | 2657 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2658 | } |
2659 | ||
2660 | reset_sigio () | |
2661 | { | |
2662 | if (noninteractive) | |
2663 | return; | |
2664 | lmode = ~LINTRUP & lmode; | |
2665 | ioctl (0, TIOCLSET, &lmode); | |
2666 | } | |
2667 | ||
08633194 | 2668 | void |
86a5659e JB |
2669 | request_sigio () |
2670 | { | |
2671 | sigrelse (SIGTINT); | |
2672 | ||
2673 | interrupts_deferred = 0; | |
2674 | } | |
2675 | ||
08633194 | 2676 | void |
86a5659e JB |
2677 | unrequest_sigio () |
2678 | { | |
2679 | sighold (SIGTINT); | |
2680 | ||
2681 | interrupts_deferred = 1; | |
2682 | } | |
2683 | ||
2684 | /* still inside #ifdef BSD4_1 */ | |
2685 | #ifdef subprocesses | |
2686 | ||
2687 | int sigheld; /* Mask of held signals */ | |
2688 | ||
2689 | sigholdx (signum) | |
2690 | int signum; | |
2691 | { | |
2692 | sigheld |= sigbit (signum); | |
2693 | sighold (signum); | |
2694 | } | |
2695 | ||
2696 | sigisheld (signum) | |
2697 | int signum; | |
2698 | { | |
2699 | sigheld |= sigbit (signum); | |
2700 | } | |
2701 | ||
2702 | sigunhold (signum) | |
2703 | int signum; | |
2704 | { | |
2705 | sigheld &= ~sigbit (signum); | |
2706 | sigrelse (signum); | |
2707 | } | |
2708 | ||
2709 | sigfree () /* Free all held signals */ | |
2710 | { | |
2711 | int i; | |
2712 | for (i = 0; i < NSIG; i++) | |
2713 | if (sigheld & sigbit (i)) | |
2714 | sigrelse (i); | |
2715 | sigheld = 0; | |
2716 | } | |
2717 | ||
2718 | sigbit (i) | |
2719 | { | |
2720 | return 1 << (i - 1); | |
2721 | } | |
2722 | #endif /* subprocesses */ | |
2723 | #endif /* BSD4_1 */ | |
2724 | \f | |
2725 | /* POSIX signals support - DJB */ | |
2726 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2727 | ||
2728 | #ifdef POSIX_SIGNALS | |
2729 | ||
2730 | sigset_t old_mask, empty_mask, full_mask, temp_mask; | |
2731 | static struct sigaction new_action, old_action; | |
2732 | ||
2733 | init_signals () | |
2734 | { | |
00eaaa32 JB |
2735 | sigemptyset (&empty_mask); |
2736 | sigfillset (&full_mask); | |
86a5659e JB |
2737 | } |
2738 | ||
86a5659e JB |
2739 | signal_handler_t |
2740 | sys_signal (int signal_number, signal_handler_t action) | |
2741 | { | |
86a5659e | 2742 | sigemptyset (&new_action.sa_mask); |
a2825280 | 2743 | new_action.sa_handler = (void (*)(int)) action; |
25ab68af RS |
2744 | #ifdef SA_RESTART |
2745 | /* Emacs mostly works better with restartable system services. If this | |
2746 | * flag exists, we probably want to turn it on here. | |
2747 | */ | |
2748 | new_action.sa_flags = SA_RESTART; | |
2749 | #else | |
4a785b6e | 2750 | new_action.sa_flags = 0; |
25ab68af | 2751 | #endif |
d32b2f3c | 2752 | sigaction (signal_number, &new_action, &old_action); |
a2825280 | 2753 | return ((void (*)(int)) old_action.sa_handler); |
86a5659e JB |
2754 | } |
2755 | ||
e065a56e JB |
2756 | #ifndef __GNUC__ |
2757 | /* If we're compiling with GCC, we don't need this function, since it | |
2758 | can be written as a macro. */ | |
2759 | sigset_t | |
2760 | sys_sigmask (int sig) | |
2761 | { | |
2762 | sigset_t mask; | |
2763 | sigemptyset (&mask); | |
2764 | sigaddset (&mask, sig); | |
2765 | return mask; | |
2766 | } | |
2767 | #endif | |
2768 | ||
86a5659e JB |
2769 | int |
2770 | sys_sigpause (sigset_t new_mask) | |
2771 | { | |
2772 | /* pause emulating berk sigpause... */ | |
2773 | sigsuspend (&new_mask); | |
2774 | return (EINTR); | |
2775 | } | |
2776 | ||
2777 | /* I'd like to have these guys return pointers to the mask storage in here, | |
2778 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2779 | safe and pass the structure. It normally won't be more than 2 bytes | |
2780 | anyhow. - DJB */ | |
2781 | ||
2782 | sigset_t | |
2783 | sys_sigblock (sigset_t new_mask) | |
2784 | { | |
2785 | sigset_t old_mask; | |
2786 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2787 | return (old_mask); | |
2788 | } | |
2789 | ||
2790 | sigset_t | |
2791 | sys_sigunblock (sigset_t new_mask) | |
2792 | { | |
2793 | sigset_t old_mask; | |
2794 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2795 | return (old_mask); | |
2796 | } | |
2797 | ||
2798 | sigset_t | |
2799 | sys_sigsetmask (sigset_t new_mask) | |
2800 | { | |
2801 | sigset_t old_mask; | |
2802 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2803 | return (old_mask); | |
2804 | } | |
2805 | ||
2806 | #endif /* POSIX_SIGNALS */ | |
2807 | \f | |
9927a7b1 | 2808 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
2809 | #ifdef random |
2810 | #define HAVE_RANDOM | |
2811 | #endif | |
2812 | #endif | |
2813 | ||
2814 | /* Figure out how many bits the system's random number generator uses. | |
2815 | `random' and `lrand48' are assumed to return 31 usable bits. | |
2816 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
2817 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
2818 | ||
2819 | #ifndef RAND_BITS | |
2820 | # ifdef HAVE_RANDOM | |
2821 | # define RAND_BITS 31 | |
2822 | # else /* !HAVE_RANDOM */ | |
2823 | # ifdef HAVE_LRAND48 | |
2824 | # define RAND_BITS 31 | |
2825 | # define random lrand48 | |
2826 | # else /* !HAVE_LRAND48 */ | |
2827 | # define RAND_BITS 15 | |
2828 | # if RAND_MAX == 32767 | |
2829 | # define random rand | |
2830 | # else /* RAND_MAX != 32767 */ | |
2831 | # if RAND_MAX == 2147483647 | |
2832 | # define random() (rand () >> 16) | |
2833 | # else /* RAND_MAX != 2147483647 */ | |
2834 | # ifdef USG | |
2835 | # define random rand | |
2836 | # else | |
2837 | # define random() (rand () >> 16) | |
2a633456 | 2838 | # endif /* !USG */ |
4bb8c8b7 KH |
2839 | # endif /* RAND_MAX != 2147483647 */ |
2840 | # endif /* RAND_MAX != 32767 */ | |
2841 | # endif /* !HAVE_LRAND48 */ | |
2842 | # endif /* !HAVE_RANDOM */ | |
2843 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2844 | |
4bb8c8b7 KH |
2845 | void |
2846 | seed_random (arg) | |
2847 | long arg; | |
86a5659e | 2848 | { |
4bb8c8b7 KH |
2849 | #ifdef HAVE_RANDOM |
2850 | srandom ((unsigned int)arg); | |
f8b53a82 | 2851 | #else |
4bb8c8b7 | 2852 | # ifdef HAVE_LRAND48 |
76425a49 | 2853 | srand48 (arg); |
4bb8c8b7 KH |
2854 | # else |
2855 | srand ((unsigned int)arg); | |
2856 | # endif | |
2e46c7c6 | 2857 | #endif |
86a5659e JB |
2858 | } |
2859 | ||
4bb8c8b7 KH |
2860 | /* |
2861 | * Build a full Emacs-sized word out of whatever we've got. | |
2862 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
2863 | */ | |
2864 | long | |
2865 | get_random () | |
2866 | { | |
2867 | long val = random (); | |
2868 | #if VALBITS > RAND_BITS | |
2869 | val = (val << RAND_BITS) ^ random (); | |
2870 | #if VALBITS > 2*RAND_BITS | |
2871 | val = (val << RAND_BITS) ^ random (); | |
2872 | #if VALBITS > 3*RAND_BITS | |
2873 | val = (val << RAND_BITS) ^ random (); | |
2874 | #if VALBITS > 4*RAND_BITS | |
2875 | val = (val << RAND_BITS) ^ random (); | |
2876 | #endif /* need at least 5 */ | |
2877 | #endif /* need at least 4 */ | |
2878 | #endif /* need at least 3 */ | |
2879 | #endif /* need at least 2 */ | |
2880 | return val & ((1L << VALBITS) - 1); | |
2881 | } | |
86a5659e JB |
2882 | \f |
2883 | #ifdef WRONG_NAME_INSQUE | |
2884 | ||
2885 | insque (q,p) | |
2886 | caddr_t q,p; | |
2887 | { | |
2888 | _insque (q,p); | |
2889 | } | |
2890 | ||
2891 | #endif | |
2892 | \f | |
2893 | #ifdef VMS | |
2894 | ||
2895 | #ifdef getenv | |
2896 | /* If any place else asks for the TERM variable, | |
2897 | allow it to be overridden with the EMACS_TERM variable | |
2898 | before attempting to translate the logical name TERM. As a last | |
2899 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2900 | #undef getenv | |
2901 | char * | |
2902 | sys_getenv (name) | |
2903 | char *name; | |
2904 | { | |
2905 | register char *val; | |
2906 | static char buf[256]; | |
2907 | static struct dsc$descriptor_s equiv | |
2908 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2909 | static struct dsc$descriptor_s d_name | |
2910 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2911 | short eqlen; | |
2912 | ||
2913 | if (!strcmp (name, "TERM")) | |
2914 | { | |
2915 | val = (char *) getenv ("EMACS_TERM"); | |
2916 | if (val) | |
2917 | return val; | |
2918 | } | |
2919 | ||
2920 | d_name.dsc$w_length = strlen (name); | |
2921 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2922 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2923 | { |
2924 | char *str = (char *) xmalloc (eqlen + 1); | |
2925 | bcopy (buf, str, eqlen); | |
2926 | str[eqlen] = '\0'; | |
2927 | /* This is a storage leak, but a pain to fix. With luck, | |
2928 | no one will ever notice. */ | |
2929 | return str; | |
2930 | } | |
2931 | return (char *) getenv (name); | |
2932 | } | |
2933 | #endif /* getenv */ | |
2934 | ||
2935 | #ifdef abort | |
2936 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2937 | to force a call on the debugger from within the image. */ | |
2938 | #undef abort | |
2939 | sys_abort () | |
2940 | { | |
2941 | reset_sys_modes (); | |
2942 | LIB$SIGNAL (SS$_DEBUG); | |
2943 | } | |
2944 | #endif /* abort */ | |
2945 | #endif /* VMS */ | |
2946 | \f | |
2947 | #ifdef VMS | |
2948 | #ifdef LINK_CRTL_SHARE | |
ea5a0917 | 2949 | #ifdef SHARABLE_LIB_BUG |
eb8c3be9 | 2950 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2951 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2952 | version which is uninitialized... If not for this "feature", we | |
2953 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2954 | int sys_nerr = 35; | |
2955 | char *sys_errlist[] = | |
2956 | { | |
2957 | "error 0", | |
2958 | "not owner", | |
2959 | "no such file or directory", | |
2960 | "no such process", | |
2961 | "interrupted system call", | |
2962 | "i/o error", | |
2963 | "no such device or address", | |
2964 | "argument list too long", | |
2965 | "exec format error", | |
2966 | "bad file number", | |
2967 | "no child process", | |
2968 | "no more processes", | |
2969 | "not enough memory", | |
2970 | "permission denied", | |
2971 | "bad address", | |
2972 | "block device required", | |
2973 | "mount devices busy", | |
2974 | "file exists", | |
2975 | "cross-device link", | |
2976 | "no such device", | |
2977 | "not a directory", | |
2978 | "is a directory", | |
2979 | "invalid argument", | |
2980 | "file table overflow", | |
2981 | "too many open files", | |
2982 | "not a typewriter", | |
2983 | "text file busy", | |
2984 | "file too big", | |
2985 | "no space left on device", | |
2986 | "illegal seek", | |
2987 | "read-only file system", | |
2988 | "too many links", | |
2989 | "broken pipe", | |
2990 | "math argument", | |
2991 | "result too large", | |
2992 | "I/O stream empty", | |
2993 | "vax/vms specific error code nontranslatable error" | |
2994 | }; | |
ea5a0917 | 2995 | #endif /* SHARABLE_LIB_BUG */ |
86a5659e JB |
2996 | #endif /* LINK_CRTL_SHARE */ |
2997 | #endif /* VMS */ | |
7088d1ca RM |
2998 | |
2999 | #ifndef HAVE_STRERROR | |
fe03522b | 3000 | #ifndef WINDOWSNT |
7088d1ca RM |
3001 | char * |
3002 | strerror (errnum) | |
3003 | int errnum; | |
3004 | { | |
3005 | extern char *sys_errlist[]; | |
3006 | extern int sys_nerr; | |
3007 | ||
3008 | if (errnum >= 0 && errnum < sys_nerr) | |
3009 | return sys_errlist[errnum]; | |
3010 | return (char *) "Unknown error"; | |
3011 | } | |
fe03522b | 3012 | #endif /* not WINDOWSNT */ |
7088d1ca | 3013 | #endif /* ! HAVE_STRERROR */ |
86a5659e JB |
3014 | \f |
3015 | #ifdef INTERRUPTIBLE_OPEN | |
3016 | ||
3017 | int | |
3018 | /* VARARGS 2 */ | |
3019 | sys_open (path, oflag, mode) | |
3020 | char *path; | |
3021 | int oflag, mode; | |
3022 | { | |
3023 | register int rtnval; | |
3024 | ||
3025 | while ((rtnval = open (path, oflag, mode)) == -1 | |
3026 | && (errno == EINTR)); | |
3027 | return (rtnval); | |
3028 | } | |
3029 | ||
3030 | #endif /* INTERRUPTIBLE_OPEN */ | |
3031 | ||
3032 | #ifdef INTERRUPTIBLE_CLOSE | |
3033 | ||
3034 | sys_close (fd) | |
3035 | int fd; | |
3036 | { | |
fe111daf | 3037 | int did_retry = 0; |
86a5659e JB |
3038 | register int rtnval; |
3039 | ||
3040 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
3041 | && (errno == EINTR)) |
3042 | did_retry = 1; | |
3043 | ||
3044 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
3045 | file descriptor. If it did the second close will fail with | |
3046 | errno = EBADF. That means we have succeeded. */ | |
3047 | if (rtnval == -1 && did_retry && errno == EBADF) | |
3048 | return 0; | |
3049 | ||
86a5659e JB |
3050 | return rtnval; |
3051 | } | |
3052 | ||
3053 | #endif /* INTERRUPTIBLE_CLOSE */ | |
3054 | ||
3055 | #ifdef INTERRUPTIBLE_IO | |
3056 | ||
3057 | int | |
3058 | sys_read (fildes, buf, nbyte) | |
3059 | int fildes; | |
3060 | char *buf; | |
3061 | unsigned int nbyte; | |
3062 | { | |
3063 | register int rtnval; | |
3064 | ||
3065 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
3066 | && (errno == EINTR)); | |
3067 | return (rtnval); | |
3068 | } | |
3069 | ||
3070 | int | |
3071 | sys_write (fildes, buf, nbyte) | |
3072 | int fildes; | |
3073 | char *buf; | |
3074 | unsigned int nbyte; | |
3075 | { | |
b95520f5 | 3076 | register int rtnval, bytes_written; |
86a5659e | 3077 | |
b95520f5 BF |
3078 | bytes_written = 0; |
3079 | ||
3080 | while (nbyte > 0) | |
3081 | { | |
3082 | rtnval = write (fildes, buf, nbyte); | |
3083 | ||
3084 | if (rtnval == -1) | |
3085 | { | |
3086 | if (errno == EINTR) | |
3087 | continue; | |
3088 | else | |
aa670904 | 3089 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
3090 | } |
3091 | ||
3092 | buf += rtnval; | |
3093 | nbyte -= rtnval; | |
3094 | bytes_written += rtnval; | |
3095 | } | |
3096 | return (bytes_written); | |
86a5659e JB |
3097 | } |
3098 | ||
3099 | #endif /* INTERRUPTIBLE_IO */ | |
3100 | \f | |
0e18d8ef | 3101 | #ifndef HAVE_VFORK |
fe03522b | 3102 | #ifndef WINDOWSNT |
0e18d8ef | 3103 | /* |
fe03522b | 3104 | * Substitute fork for vfork on USG flavors. |
0e18d8ef RS |
3105 | */ |
3106 | ||
e336874b | 3107 | VFORK_RETURN_TYPE |
0e18d8ef RS |
3108 | vfork () |
3109 | { | |
3110 | return (fork ()); | |
3111 | } | |
fe03522b | 3112 | #endif /* not WINDOWSNT */ |
0e18d8ef RS |
3113 | #endif /* not HAVE_VFORK */ |
3114 | \f | |
86a5659e JB |
3115 | #ifdef USG |
3116 | /* | |
3117 | * All of the following are for USG. | |
3118 | * | |
3119 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
3120 | * that the user program has elected to catch. Thus the system call | |
3121 | * must be retried in these cases. To handle this without massive | |
3122 | * changes in the source code, we remap the standard system call names | |
3123 | * to names for our own functions in sysdep.c that do the system call | |
3124 | * with retries. Actually, for portability reasons, it is good | |
3125 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 3126 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
3127 | * adds an extra level of function call overhead but it is almost |
3128 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
3129 | */ | |
3130 | ||
00eaaa32 | 3131 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
3132 | char *sys_siglist[NSIG + 1] = |
3133 | { | |
3134 | #ifdef AIX | |
3135 | /* AIX has changed the signals a bit */ | |
3136 | "bogus signal", /* 0 */ | |
3137 | "hangup", /* 1 SIGHUP */ | |
3138 | "interrupt", /* 2 SIGINT */ | |
3139 | "quit", /* 3 SIGQUIT */ | |
3140 | "illegal instruction", /* 4 SIGILL */ | |
3141 | "trace trap", /* 5 SIGTRAP */ | |
3142 | "IOT instruction", /* 6 SIGIOT */ | |
3143 | "crash likely", /* 7 SIGDANGER */ | |
3144 | "floating point exception", /* 8 SIGFPE */ | |
3145 | "kill", /* 9 SIGKILL */ | |
3146 | "bus error", /* 10 SIGBUS */ | |
3147 | "segmentation violation", /* 11 SIGSEGV */ | |
3148 | "bad argument to system call", /* 12 SIGSYS */ | |
3149 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3150 | "alarm clock", /* 14 SIGALRM */ | |
3151 | "software termination signum", /* 15 SIGTERM */ | |
3152 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3153 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3154 | "death of a child", /* 18 SIGCLD */ | |
3155 | "power-fail restart", /* 19 SIGPWR */ | |
3156 | "bogus signal", /* 20 */ | |
3157 | "bogus signal", /* 21 */ | |
3158 | "bogus signal", /* 22 */ | |
3159 | "bogus signal", /* 23 */ | |
3160 | "bogus signal", /* 24 */ | |
3161 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
3162 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
3163 | "I/O intervention required", /* 27 SIGIOINT */ | |
6056c55b | 3164 | #ifdef AIXHFT |
86a5659e JB |
3165 | "HFT grant", /* 28 SIGGRANT */ |
3166 | "HFT retract", /* 29 SIGRETRACT */ | |
3167 | "HFT sound done", /* 30 SIGSOUND */ | |
3168 | "HFT input ready", /* 31 SIGMSG */ | |
6056c55b | 3169 | #endif |
86a5659e JB |
3170 | #else /* not AIX */ |
3171 | "bogus signal", /* 0 */ | |
3172 | "hangup", /* 1 SIGHUP */ | |
3173 | "interrupt", /* 2 SIGINT */ | |
3174 | "quit", /* 3 SIGQUIT */ | |
3175 | "illegal instruction", /* 4 SIGILL */ | |
3176 | "trace trap", /* 5 SIGTRAP */ | |
3177 | "IOT instruction", /* 6 SIGIOT */ | |
3178 | "EMT instruction", /* 7 SIGEMT */ | |
3179 | "floating point exception", /* 8 SIGFPE */ | |
3180 | "kill", /* 9 SIGKILL */ | |
3181 | "bus error", /* 10 SIGBUS */ | |
3182 | "segmentation violation", /* 11 SIGSEGV */ | |
3183 | "bad argument to system call", /* 12 SIGSYS */ | |
3184 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3185 | "alarm clock", /* 14 SIGALRM */ | |
3186 | "software termination signum", /* 15 SIGTERM */ | |
3187 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3188 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3189 | "death of a child", /* 18 SIGCLD */ | |
3190 | "power-fail restart", /* 19 SIGPWR */ | |
0f0ea229 RS |
3191 | #ifdef sun |
3192 | "window size change", /* 20 SIGWINCH */ | |
3193 | "urgent socket condition", /* 21 SIGURG */ | |
ea5a0917 | 3194 | "pollable event occurred", /* 22 SIGPOLL */ |
0f0ea229 RS |
3195 | "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ |
3196 | "user stop requested from tty", /* 24 SIGTSTP */ | |
3197 | "stopped process has been continued", /* 25 SIGCONT */ | |
3198 | "background tty read attempted", /* 26 SIGTTIN */ | |
3199 | "background tty write attempted", /* 27 SIGTTOU */ | |
3200 | "virtual timer expired", /* 28 SIGVTALRM */ | |
3201 | "profiling timer expired", /* 29 SIGPROF */ | |
3202 | "exceeded cpu limit", /* 30 SIGXCPU */ | |
3203 | "exceeded file size limit", /* 31 SIGXFSZ */ | |
3204 | "process's lwps are blocked", /* 32 SIGWAITING */ | |
3205 | "special signal used by thread library", /* 33 SIGLWP */ | |
2da0df4d | 3206 | #ifdef SIGFREEZE |
0f0ea229 | 3207 | "Special Signal Used By CPR", /* 34 SIGFREEZE */ |
2da0df4d RS |
3208 | #endif |
3209 | #ifdef SIGTHAW | |
0f0ea229 | 3210 | "Special Signal Used By CPR", /* 35 SIGTHAW */ |
2da0df4d | 3211 | #endif |
0f0ea229 | 3212 | #endif /* sun */ |
86a5659e JB |
3213 | #endif /* not AIX */ |
3214 | 0 | |
3215 | }; | |
70080de1 | 3216 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
3217 | |
3218 | /* | |
3219 | * Warning, this function may not duplicate 4.2 action properly | |
3220 | * under error conditions. | |
3221 | */ | |
3222 | ||
3223 | #ifndef MAXPATHLEN | |
3224 | /* In 4.1, param.h fails to define this. */ | |
3225 | #define MAXPATHLEN 1024 | |
3226 | #endif | |
3227 | ||
3228 | #ifndef HAVE_GETWD | |
3229 | ||
3230 | char * | |
3231 | getwd (pathname) | |
3232 | char *pathname; | |
3233 | { | |
3234 | char *npath, *spath; | |
3235 | extern char *getcwd (); | |
3236 | ||
9ac0d9e0 | 3237 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3238 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
3239 | if (spath == 0) |
3240 | return spath; | |
86a5659e JB |
3241 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3242 | up to first slash. Should be harmless on other systems. */ | |
3243 | while (*npath && *npath != '/') | |
3244 | npath++; | |
3245 | strcpy (pathname, npath); | |
3246 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3247 | UNBLOCK_INPUT; |
86a5659e JB |
3248 | return pathname; |
3249 | } | |
3250 | ||
3251 | #endif /* HAVE_GETWD */ | |
3252 | ||
3253 | /* | |
3254 | * Emulate rename using unlink/link. Note that this is | |
3255 | * only partially correct. Also, doesn't enforce restriction | |
3256 | * that files be of same type (regular->regular, dir->dir, etc). | |
3257 | */ | |
3258 | ||
4746118a JB |
3259 | #ifndef HAVE_RENAME |
3260 | ||
86a5659e | 3261 | rename (from, to) |
19c7afdf JB |
3262 | const char *from; |
3263 | const char *to; | |
86a5659e JB |
3264 | { |
3265 | if (access (from, 0) == 0) | |
3266 | { | |
3267 | unlink (to); | |
3268 | if (link (from, to) == 0) | |
3269 | if (unlink (from) == 0) | |
3270 | return (0); | |
3271 | } | |
3272 | return (-1); | |
3273 | } | |
3274 | ||
4746118a JB |
3275 | #endif |
3276 | ||
86a5659e JB |
3277 | |
3278 | #ifdef HPUX | |
3279 | #ifndef HAVE_PERROR | |
3280 | ||
3281 | /* HPUX curses library references perror, but as far as we know | |
3282 | it won't be called. Anyway this definition will do for now. */ | |
3283 | ||
3284 | perror () | |
3285 | { | |
3286 | } | |
3287 | ||
3288 | #endif /* not HAVE_PERROR */ | |
3289 | #endif /* HPUX */ | |
3290 | ||
3291 | #ifndef HAVE_DUP2 | |
3292 | ||
3293 | /* | |
3294 | * Emulate BSD dup2. First close newd if it already exists. | |
3295 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3296 | * until we are, then close the unsuccessful ones. | |
3297 | */ | |
3298 | ||
3299 | dup2 (oldd, newd) | |
3300 | int oldd; | |
3301 | int newd; | |
3302 | { | |
3303 | register int fd, ret; | |
3304 | ||
3305 | sys_close (newd); | |
3306 | ||
3307 | #ifdef F_DUPFD | |
3308 | fd = fcntl (oldd, F_DUPFD, newd); | |
3309 | if (fd != newd) | |
7088d1ca | 3310 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
86a5659e JB |
3311 | #else |
3312 | fd = dup (old); | |
3313 | if (fd == -1) | |
3314 | return -1; | |
3315 | if (fd == new) | |
3316 | return new; | |
3317 | ret = dup2 (old,new); | |
3318 | sys_close (fd); | |
3319 | return ret; | |
3320 | #endif | |
3321 | } | |
3322 | ||
3323 | #endif /* not HAVE_DUP2 */ | |
3324 | ||
3325 | /* | |
3326 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3327 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3328 | * Only needed when subprocesses are defined. | |
3329 | */ | |
3330 | ||
3331 | #ifdef subprocesses | |
3332 | #ifndef VMS | |
3333 | #ifndef HAVE_GETTIMEOFDAY | |
3334 | #ifdef HAVE_TIMEVAL | |
3335 | ||
3336 | /* ARGSUSED */ | |
3337 | gettimeofday (tp, tzp) | |
3338 | struct timeval *tp; | |
3339 | struct timezone *tzp; | |
3340 | { | |
3341 | extern long time (); | |
3342 | ||
3343 | tp->tv_sec = time ((long *)0); | |
3344 | tp->tv_usec = 0; | |
4ca7594f RS |
3345 | if (tzp != 0) |
3346 | tzp->tz_minuteswest = -1; | |
86a5659e JB |
3347 | } |
3348 | ||
3349 | #endif | |
3350 | #endif | |
3351 | #endif | |
3352 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3353 | ||
3354 | /* | |
3355 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3356 | */ | |
3357 | ||
3358 | croak (badfunc) | |
3359 | char *badfunc; | |
3360 | { | |
3361 | printf ("%s not yet implemented\r\n", badfunc); | |
3362 | reset_sys_modes (); | |
3363 | exit (1); | |
3364 | } | |
3365 | ||
3366 | #endif /* USG */ | |
3367 | \f | |
3368 | #ifdef DGUX | |
3369 | ||
3370 | char *sys_siglist[NSIG + 1] = | |
3371 | { | |
3372 | "null signal", /* 0 SIGNULL */ | |
3373 | "hangup", /* 1 SIGHUP */ | |
3374 | "interrupt", /* 2 SIGINT */ | |
3375 | "quit", /* 3 SIGQUIT */ | |
3376 | "illegal instruction", /* 4 SIGILL */ | |
3377 | "trace trap", /* 5 SIGTRAP */ | |
3378 | "abort termination", /* 6 SIGABRT */ | |
3379 | "SIGEMT", /* 7 SIGEMT */ | |
3380 | "floating point exception", /* 8 SIGFPE */ | |
3381 | "kill", /* 9 SIGKILL */ | |
3382 | "bus error", /* 10 SIGBUS */ | |
3383 | "segmentation violation", /* 11 SIGSEGV */ | |
3384 | "bad argument to system call", /* 12 SIGSYS */ | |
3385 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
3386 | "alarm clock", /* 14 SIGALRM */ | |
3387 | "software termination signal", /* 15 SIGTERM */ | |
3388 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3389 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3390 | "child stopped or terminated", /* 18 SIGCLD */ | |
3391 | "power-fail restart", /* 19 SIGPWR */ | |
3392 | "window size changed", /* 20 SIGWINCH */ | |
3393 | "undefined", /* 21 */ | |
eb8c3be9 | 3394 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
3395 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
3396 | "stop signal from tty", /* 24 SIGSTP */ | |
3397 | "continue a stopped process", /* 25 SIGCONT */ | |
3398 | "attempted background tty read", /* 26 SIGTTIN */ | |
3399 | "attempted background tty write", /* 27 SIGTTOU */ | |
3400 | "undefined", /* 28 */ | |
3401 | "undefined", /* 29 */ | |
3402 | "undefined", /* 30 */ | |
3403 | "undefined", /* 31 */ | |
3404 | "undefined", /* 32 */ | |
3405 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
3406 | "I/O is possible", /* 34 SIGIO */ | |
3407 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
3408 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
3409 | "virtual time alarm", /* 37 SIGVTALRM */ | |
3410 | "profiling time alarm", /* 38 SIGPROF */ | |
3411 | "undefined", /* 39 */ | |
3412 | "file record locks revoked", /* 40 SIGLOST */ | |
3413 | "undefined", /* 41 */ | |
3414 | "undefined", /* 42 */ | |
3415 | "undefined", /* 43 */ | |
3416 | "undefined", /* 44 */ | |
3417 | "undefined", /* 45 */ | |
3418 | "undefined", /* 46 */ | |
3419 | "undefined", /* 47 */ | |
3420 | "undefined", /* 48 */ | |
3421 | "undefined", /* 49 */ | |
3422 | "undefined", /* 50 */ | |
3423 | "undefined", /* 51 */ | |
3424 | "undefined", /* 52 */ | |
3425 | "undefined", /* 53 */ | |
3426 | "undefined", /* 54 */ | |
3427 | "undefined", /* 55 */ | |
3428 | "undefined", /* 56 */ | |
3429 | "undefined", /* 57 */ | |
3430 | "undefined", /* 58 */ | |
3431 | "undefined", /* 59 */ | |
3432 | "undefined", /* 60 */ | |
3433 | "undefined", /* 61 */ | |
3434 | "undefined", /* 62 */ | |
3435 | "undefined", /* 63 */ | |
3436 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
3437 | 0 | |
3438 | }; | |
3439 | ||
3440 | #endif /* DGUX */ | |
3441 | \f | |
3442 | /* Directory routines for systems that don't have them. */ | |
3443 | ||
3444 | #ifdef SYSV_SYSTEM_DIR | |
3445 | ||
3446 | #include <dirent.h> | |
3447 | ||
1db6401c | 3448 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
cfdc57af | 3449 | |
86a5659e JB |
3450 | int |
3451 | closedir (dirp) | |
3452 | register DIR *dirp; /* stream from opendir */ | |
3453 | { | |
cfdc57af RS |
3454 | int rtnval; |
3455 | ||
3456 | rtnval = sys_close (dirp->dd_fd); | |
1b929d25 | 3457 | |
65aa44ac JB |
3458 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3459 | in one block. Why in the world are we freeing this ourselves | |
3460 | anyway? */ | |
3461 | #if ! (defined (sun) && defined (USG5_4)) | |
3462 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3463 | #endif | |
9ac0d9e0 | 3464 | xfree ((char *) dirp); |
cfdc57af RS |
3465 | |
3466 | return rtnval; | |
86a5659e | 3467 | } |
1db6401c | 3468 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3469 | #endif /* SYSV_SYSTEM_DIR */ |
3470 | ||
3471 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3472 | ||
3473 | DIR * | |
3474 | opendir (filename) | |
3475 | char *filename; /* name of directory */ | |
3476 | { | |
3477 | register DIR *dirp; /* -> malloc'ed storage */ | |
3478 | register int fd; /* file descriptor for read */ | |
3479 | struct stat sbuf; /* result of fstat */ | |
3480 | ||
3481 | fd = sys_open (filename, 0); | |
3482 | if (fd < 0) | |
3483 | return 0; | |
3484 | ||
9ac0d9e0 | 3485 | BLOCK_INPUT; |
86a5659e JB |
3486 | if (fstat (fd, &sbuf) < 0 |
3487 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3488 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3489 | { | |
3490 | sys_close (fd); | |
9ac0d9e0 | 3491 | UNBLOCK_INPUT; |
86a5659e JB |
3492 | return 0; /* bad luck today */ |
3493 | } | |
9ac0d9e0 | 3494 | UNBLOCK_INPUT; |
86a5659e JB |
3495 | |
3496 | dirp->dd_fd = fd; | |
3497 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3498 | ||
3499 | return dirp; | |
3500 | } | |
3501 | ||
3502 | void | |
3503 | closedir (dirp) | |
3504 | register DIR *dirp; /* stream from opendir */ | |
3505 | { | |
3506 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 3507 | xfree ((char *) dirp); |
86a5659e JB |
3508 | } |
3509 | ||
3510 | ||
3511 | #ifndef VMS | |
3512 | #define DIRSIZ 14 | |
3513 | struct olddir | |
3514 | { | |
3515 | ino_t od_ino; /* inode */ | |
3516 | char od_name[DIRSIZ]; /* filename */ | |
3517 | }; | |
3518 | #endif /* not VMS */ | |
3519 | ||
3520 | struct direct dir_static; /* simulated directory contents */ | |
3521 | ||
3522 | /* ARGUSED */ | |
3523 | struct direct * | |
3524 | readdir (dirp) | |
3525 | register DIR *dirp; /* stream from opendir */ | |
3526 | { | |
3527 | #ifndef VMS | |
3528 | register struct olddir *dp; /* -> directory data */ | |
3529 | #else /* VMS */ | |
3530 | register struct dir$_name *dp; /* -> directory data */ | |
3531 | register struct dir$_version *dv; /* -> version data */ | |
3532 | #endif /* VMS */ | |
3533 | ||
3534 | for (; ;) | |
3535 | { | |
3536 | if (dirp->dd_loc >= dirp->dd_size) | |
3537 | dirp->dd_loc = dirp->dd_size = 0; | |
3538 | ||
3539 | if (dirp->dd_size == 0 /* refill buffer */ | |
3540 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3541 | return 0; | |
3542 | ||
3543 | #ifndef VMS | |
3544 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3545 | dirp->dd_loc += sizeof (struct olddir); | |
3546 | ||
3547 | if (dp->od_ino != 0) /* not deleted entry */ | |
3548 | { | |
3549 | dir_static.d_ino = dp->od_ino; | |
3550 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3551 | dir_static.d_name[DIRSIZ] = '\0'; | |
3552 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3553 | dir_static.d_reclen = sizeof (struct direct) | |
3554 | - MAXNAMLEN + 3 | |
3555 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3556 | return &dir_static; /* -> simulated structure */ | |
3557 | } | |
3558 | #else /* VMS */ | |
3559 | dp = (struct dir$_name *) dirp->dd_buf; | |
3560 | if (dirp->dd_loc == 0) | |
3561 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3562 | : dp->dir$b_namecount; | |
3563 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3564 | dir_static.d_ino = dv->dir$w_fid_num; | |
3565 | dir_static.d_namlen = dp->dir$b_namecount; | |
3566 | dir_static.d_reclen = sizeof (struct direct) | |
3567 | - MAXNAMLEN + 3 | |
3568 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3569 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3570 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3571 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3572 | return &dir_static; | |
3573 | #endif /* VMS */ | |
3574 | } | |
3575 | } | |
3576 | ||
3577 | #ifdef VMS | |
3578 | /* readdirver is just like readdir except it returns all versions of a file | |
3579 | as separate entries. */ | |
3580 | ||
3581 | /* ARGUSED */ | |
3582 | struct direct * | |
3583 | readdirver (dirp) | |
3584 | register DIR *dirp; /* stream from opendir */ | |
3585 | { | |
3586 | register struct dir$_name *dp; /* -> directory data */ | |
3587 | register struct dir$_version *dv; /* -> version data */ | |
3588 | ||
3589 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3590 | dirp->dd_loc = dirp->dd_size = 0; | |
3591 | ||
3592 | if (dirp->dd_size == 0 /* refill buffer */ | |
3593 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3594 | return 0; | |
3595 | ||
3596 | dp = (struct dir$_name *) dirp->dd_buf; | |
3597 | if (dirp->dd_loc == 0) | |
3598 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3599 | : dp->dir$b_namecount; | |
3600 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3601 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3602 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3603 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3604 | dir_static.d_ino = dv->dir$w_fid_num; | |
3605 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3606 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3607 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3608 | return &dir_static; | |
3609 | } | |
3610 | ||
3611 | #endif /* VMS */ | |
3612 | ||
3613 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3614 | |
3615 | \f | |
53ea491a | 3616 | int |
061ea326 | 3617 | set_file_times (filename, atime, mtime) |
8334eb21 | 3618 | char *filename; |
53ea491a KH |
3619 | EMACS_TIME atime, mtime; |
3620 | { | |
3621 | #ifdef HAVE_UTIMES | |
3622 | struct timeval tv[2]; | |
3623 | tv[0] = atime; | |
3624 | tv[1] = mtime; | |
8334eb21 RS |
3625 | return utimes (filename, tv); |
3626 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3627 | struct utimbuf utb; |
3628 | utb.actime = EMACS_SECS (atime); | |
3629 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3630 | return utime (filename, &utb); |
3631 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3632 | } |
3633 | \f | |
23524fb9 JB |
3634 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3635 | ||
3636 | #ifndef HAVE_MKDIR | |
3637 | /* | |
3638 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3639 | * | |
3640 | * If you want it, it's yours. All I ask in return is that if you | |
3641 | * figure out how to do this in a Bourne Shell script you send me | |
3642 | * a copy. | |
3643 | * sdcsvax!rmr or rmr@uscd | |
3644 | * | |
3645 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3646 | * subroutine. 11Mar86; hoptoad!gnu | |
3647 | * | |
3648 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3649 | * subroutine didn't return EEXIST. It does now. | |
3650 | */ | |
3651 | ||
3652 | /* | |
3653 | * Make a directory. | |
3654 | */ | |
f3892946 RS |
3655 | #ifdef MKDIR_PROTOTYPE |
3656 | MKDIR_PROTOTYPE | |
3657 | #else | |
23524fb9 JB |
3658 | int |
3659 | mkdir (dpath, dmode) | |
3660 | char *dpath; | |
3661 | int dmode; | |
f3892946 | 3662 | #endif |
23524fb9 | 3663 | { |
039f26a4 | 3664 | int cpid, status, fd; |
23524fb9 JB |
3665 | struct stat statbuf; |
3666 | ||
3667 | if (stat (dpath, &statbuf) == 0) | |
3668 | { | |
3669 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3670 | return -1; | |
3671 | } | |
3672 | ||
3673 | /* If stat fails for a reason other than non-existence, return error */ | |
3674 | if (errno != ENOENT) | |
3675 | return -1; | |
3676 | ||
039f26a4 | 3677 | synch_process_alive = 1; |
23524fb9 JB |
3678 | switch (cpid = fork ()) |
3679 | { | |
3680 | ||
039f26a4 | 3681 | case -1: /* Error in fork */ |
23524fb9 JB |
3682 | return (-1); /* Errno is set already */ |
3683 | ||
3684 | case 0: /* Child process */ | |
3685 | /* | |
3686 | * Cheap hack to set mode of new directory. Since this | |
3687 | * child process is going away anyway, we zap its umask. | |
3688 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3689 | * directory. Does anybody care? | |
3690 | */ | |
3691 | status = umask (0); /* Get current umask */ | |
3692 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3693 | fd = sys_open("/dev/null", 2); |
3694 | if (fd >= 0) | |
3695 | { | |
3696 | dup2 (fd, 0); | |
3697 | dup2 (fd, 1); | |
3698 | dup2 (fd, 2); | |
3699 | } | |
23524fb9 JB |
3700 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3701 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3702 | ||
3703 | default: /* Parent process */ | |
039f26a4 | 3704 | wait_for_termination (cpid); |
23524fb9 JB |
3705 | } |
3706 | ||
039f26a4 | 3707 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3708 | { |
3709 | errno = EIO; /* We don't know why, but */ | |
3710 | return -1; /* /bin/mkdir failed */ | |
3711 | } | |
3712 | ||
3713 | return 0; | |
3714 | } | |
3715 | #endif /* not HAVE_MKDIR */ | |
3716 | ||
3717 | #ifndef HAVE_RMDIR | |
3718 | int | |
3719 | rmdir (dpath) | |
3720 | char *dpath; | |
3721 | { | |
039f26a4 | 3722 | int cpid, status, fd; |
23524fb9 JB |
3723 | struct stat statbuf; |
3724 | ||
3725 | if (stat (dpath, &statbuf) != 0) | |
3726 | { | |
3727 | /* Stat just set errno. We don't have to */ | |
3728 | return -1; | |
3729 | } | |
3730 | ||
039f26a4 | 3731 | synch_process_alive = 1; |
23524fb9 JB |
3732 | switch (cpid = fork ()) |
3733 | { | |
3734 | ||
039f26a4 | 3735 | case -1: /* Error in fork */ |
23524fb9 JB |
3736 | return (-1); /* Errno is set already */ |
3737 | ||
3738 | case 0: /* Child process */ | |
039f26a4 RS |
3739 | fd = sys_open("/dev/null", 2); |
3740 | if (fd >= 0) | |
3741 | { | |
3742 | dup2 (fd, 0); | |
3743 | dup2 (fd, 1); | |
3744 | dup2 (fd, 2); | |
3745 | } | |
f560db78 RS |
3746 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3747 | _exit (-1); /* Can't exec /bin/rmdir */ | |
3748 | ||
207bdbdb | 3749 | default: /* Parent process */ |
f560db78 | 3750 | wait_for_termination (cpid); |
23524fb9 JB |
3751 | } |
3752 | ||
f560db78 | 3753 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3754 | { |
3755 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 3756 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3757 | } |
3758 | ||
3759 | return 0; | |
3760 | } | |
3761 | #endif /* !HAVE_RMDIR */ | |
3762 | ||
3763 | ||
86a5659e JB |
3764 | \f |
3765 | /* Functions for VMS */ | |
3766 | #ifdef VMS | |
91bac16a | 3767 | #include "vms-pwd.h" |
86a5659e JB |
3768 | #include <acldef.h> |
3769 | #include <chpdef.h> | |
3770 | #include <jpidef.h> | |
3771 | ||
3772 | /* Return as a string the VMS error string pertaining to STATUS. | |
3773 | Reuses the same static buffer each time it is called. */ | |
3774 | ||
3775 | char * | |
3776 | vmserrstr (status) | |
3777 | int status; /* VMS status code */ | |
3778 | { | |
3779 | int bufadr[2]; | |
3780 | short len; | |
3781 | static char buf[257]; | |
3782 | ||
3783 | bufadr[0] = sizeof buf - 1; | |
3784 | bufadr[1] = (int) buf; | |
3785 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3786 | return "untranslatable VMS error status"; | |
3787 | buf[len] = '\0'; | |
3788 | return buf; | |
3789 | } | |
3790 | ||
3791 | #ifdef access | |
3792 | #undef access | |
3793 | ||
3794 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3795 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3796 | */ | |
3797 | ||
3798 | #ifdef VMS4_4 | |
3799 | ||
3800 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3801 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3802 | ||
3803 | typedef union { | |
3804 | struct { | |
3805 | unsigned short s_buflen; | |
3806 | unsigned short s_code; | |
3807 | char *s_bufadr; | |
3808 | unsigned short *s_retlenadr; | |
3809 | } s; | |
3810 | int end; | |
3811 | } item; | |
3812 | #define buflen s.s_buflen | |
3813 | #define code s.s_code | |
3814 | #define bufadr s.s_bufadr | |
3815 | #define retlenadr s.s_retlenadr | |
3816 | ||
3817 | #define R_OK 4 /* test for read permission */ | |
3818 | #define W_OK 2 /* test for write permission */ | |
3819 | #define X_OK 1 /* test for execute (search) permission */ | |
3820 | #define F_OK 0 /* test for presence of file */ | |
3821 | ||
3822 | int | |
3823 | sys_access (path, mode) | |
3824 | char *path; | |
3825 | int mode; | |
3826 | { | |
3827 | static char *user = NULL; | |
3828 | char dir_fn[512]; | |
3829 | ||
3830 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3831 | * access can treat the directory like a file. */ | |
3832 | if (directory_file_name (path, dir_fn)) | |
3833 | path = dir_fn; | |
3834 | ||
3835 | if (mode == F_OK) | |
3836 | return access (path, mode); | |
3837 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3838 | return -1; | |
3839 | { | |
3840 | int stat; | |
3841 | int flags; | |
3842 | int acces; | |
3843 | unsigned short int dummy; | |
3844 | item itemlst[3]; | |
3845 | static int constant = ACL$C_FILE; | |
3846 | DESCRIPTOR (path_desc, path); | |
3847 | DESCRIPTOR (user_desc, user); | |
3848 | ||
3849 | flags = 0; | |
3850 | acces = 0; | |
3851 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3852 | return stat; | |
3853 | if (mode & R_OK) | |
3854 | acces |= CHP$M_READ; | |
3855 | if (mode & W_OK) | |
3856 | acces |= CHP$M_WRITE; | |
3857 | itemlst[0].buflen = sizeof (int); | |
3858 | itemlst[0].code = CHP$_FLAGS; | |
3859 | itemlst[0].bufadr = (char *) &flags; | |
3860 | itemlst[0].retlenadr = &dummy; | |
3861 | itemlst[1].buflen = sizeof (int); | |
3862 | itemlst[1].code = CHP$_ACCESS; | |
3863 | itemlst[1].bufadr = (char *) &acces; | |
3864 | itemlst[1].retlenadr = &dummy; | |
3865 | itemlst[2].end = CHP$_END; | |
3866 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3867 | return stat == SS$_NORMAL ? 0 : -1; | |
3868 | } | |
3869 | } | |
3870 | ||
3871 | #else /* not VMS4_4 */ | |
3872 | ||
3873 | #include <prvdef.h> | |
fe03522b RS |
3874 | #define ACE$M_WRITE 2 |
3875 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3876 | |
3877 | static unsigned short memid, grpid; | |
3878 | static unsigned int uic; | |
3879 | ||
3880 | /* Called from init_sys_modes, so it happens not very often | |
3881 | but at least each time Emacs is loaded. */ | |
3882 | sys_access_reinit () | |
3883 | { | |
3884 | uic = 0; | |
3885 | } | |
3886 | ||
3887 | int | |
3888 | sys_access (filename, type) | |
3889 | char * filename; | |
3890 | int type; | |
3891 | { | |
3892 | struct FAB fab; | |
3893 | struct XABPRO xab; | |
3894 | int status, size, i, typecode, acl_controlled; | |
3895 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3896 | union prvdef prvmask; | |
3897 | ||
3898 | /* Get UIC and GRP values for protection checking. */ | |
3899 | if (uic == 0) | |
3900 | { | |
3901 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3902 | if (! (status & 1)) | |
3903 | return -1; | |
3904 | memid = uic & 0xFFFF; | |
3905 | grpid = uic >> 16; | |
3906 | } | |
3907 | ||
fe03522b | 3908 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3909 | return access (filename, type); |
3910 | ||
3911 | /* Check write protection. */ | |
3912 | ||
fe03522b | 3913 | #define CHECKPRIV(bit) (prvmask.bit) |
ea5a0917 | 3914 | #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) |
86a5659e JB |
3915 | |
3916 | /* Find privilege bits */ | |
986ffb24 | 3917 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3918 | if (! (status & 1)) |
3919 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3920 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3921 | return 0; /* BYPASS enabled */ | |
3922 | fab = cc$rms_fab; | |
3923 | fab.fab$b_fac = FAB$M_GET; | |
3924 | fab.fab$l_fna = filename; | |
3925 | fab.fab$b_fns = strlen (filename); | |
3926 | fab.fab$l_xab = &xab; | |
3927 | xab = cc$rms_xabpro; | |
3928 | xab.xab$l_aclbuf = aclbuf; | |
3929 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3930 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3931 | if (! (status & 1)) |
3932 | return -1; | |
986ffb24 | 3933 | SYS$CLOSE (&fab, 0, 0); |
86a5659e | 3934 | /* Check system access */ |
ea5a0917 | 3935 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) |
86a5659e JB |
3936 | return 0; |
3937 | /* Check ACL entries, if any */ | |
3938 | acl_controlled = 0; | |
3939 | if (xab.xab$w_acllen > 0) | |
3940 | { | |
3941 | aclptr = aclbuf; | |
3942 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3943 | while (*aclptr && aclptr < aclend) | |
3944 | { | |
3945 | size = (*aclptr & 0xff) / 4; | |
3946 | typecode = (*aclptr >> 8) & 0xff; | |
3947 | if (typecode == ACE$C_KEYID) | |
3948 | for (i = size - 1; i > 1; i--) | |
3949 | if (aclptr[i] == uic) | |
3950 | { | |
3951 | acl_controlled = 1; | |
3952 | if (aclptr[1] & ACE$M_WRITE) | |
3953 | return 0; /* Write access through ACL */ | |
3954 | } | |
3955 | aclptr = &aclptr[size]; | |
3956 | } | |
3957 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3958 | return -1; | |
3959 | } | |
3960 | /* No ACL entries specified, check normal protection */ | |
ea5a0917 | 3961 | if (WRITABLE (XAB$V_WLD)) /* World writable */ |
86a5659e | 3962 | return 0; |
ea5a0917 | 3963 | if (WRITABLE (XAB$V_GRP) && |
86a5659e | 3964 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) |
ea5a0917 KH |
3965 | return 0; /* Group writable */ |
3966 | if (WRITABLE (XAB$V_OWN) && | |
86a5659e | 3967 | (xab.xab$l_uic & 0xFFFF) == memid) |
ea5a0917 | 3968 | return 0; /* Owner writable */ |
86a5659e | 3969 | |
ea5a0917 | 3970 | return -1; /* Not writable */ |
86a5659e JB |
3971 | } |
3972 | #endif /* not VMS4_4 */ | |
3973 | #endif /* access */ | |
3974 | ||
3975 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3976 | ||
3977 | /* translate a vms file spec to a unix path */ | |
3978 | char * | |
3979 | sys_translate_vms (vfile) | |
3980 | char * vfile; | |
3981 | { | |
3982 | char * p; | |
3983 | char * targ; | |
3984 | ||
3985 | if (!vfile) | |
3986 | return 0; | |
3987 | ||
3988 | targ = vtbuf; | |
3989 | ||
3990 | /* leading device or logical name is a root directory */ | |
3991 | if (p = strchr (vfile, ':')) | |
3992 | { | |
3993 | *targ++ = '/'; | |
3994 | while (vfile < p) | |
3995 | *targ++ = *vfile++; | |
3996 | vfile++; | |
3997 | *targ++ = '/'; | |
3998 | } | |
3999 | p = vfile; | |
4000 | if (*p == '[' || *p == '<') | |
4001 | { | |
4002 | while (*++vfile != *p + 2) | |
4003 | switch (*vfile) | |
4004 | { | |
4005 | case '.': | |
4006 | if (vfile[-1] == *p) | |
4007 | *targ++ = '.'; | |
4008 | *targ++ = '/'; | |
4009 | break; | |
4010 | ||
4011 | case '-': | |
4012 | *targ++ = '.'; | |
4013 | *targ++ = '.'; | |
4014 | break; | |
4015 | ||
4016 | default: | |
4017 | *targ++ = *vfile; | |
4018 | break; | |
4019 | } | |
4020 | vfile++; | |
4021 | *targ++ = '/'; | |
4022 | } | |
4023 | while (*vfile) | |
4024 | *targ++ = *vfile++; | |
4025 | ||
4026 | return vtbuf; | |
4027 | } | |
4028 | ||
4029 | static char utbuf[NAM$C_MAXRSS+1]; | |
4030 | ||
4031 | /* translate a unix path to a VMS file spec */ | |
4032 | char * | |
4033 | sys_translate_unix (ufile) | |
4034 | char * ufile; | |
4035 | { | |
4036 | int slash_seen = 0; | |
4037 | char *p; | |
4038 | char * targ; | |
4039 | ||
4040 | if (!ufile) | |
4041 | return 0; | |
4042 | ||
4043 | targ = utbuf; | |
4044 | ||
4045 | if (*ufile == '/') | |
4046 | { | |
4047 | ufile++; | |
4048 | } | |
4049 | ||
4050 | while (*ufile) | |
4051 | { | |
4052 | switch (*ufile) | |
4053 | { | |
4054 | case '/': | |
4055 | if (slash_seen) | |
4056 | if (index (&ufile[1], '/')) | |
4057 | *targ++ = '.'; | |
4058 | else | |
4059 | *targ++ = ']'; | |
4060 | else | |
4061 | { | |
4062 | *targ++ = ':'; | |
4063 | if (index (&ufile[1], '/')) | |
4064 | *targ++ = '['; | |
4065 | slash_seen = 1; | |
4066 | } | |
4067 | break; | |
4068 | ||
4069 | case '.': | |
4070 | if (strncmp (ufile, "./", 2) == 0) | |
4071 | { | |
4072 | if (!slash_seen) | |
4073 | { | |
4074 | *targ++ = '['; | |
4075 | slash_seen = 1; | |
4076 | } | |
4077 | ufile++; /* skip the dot */ | |
4078 | if (index (&ufile[1], '/')) | |
4079 | *targ++ = '.'; | |
4080 | else | |
4081 | *targ++ = ']'; | |
4082 | } | |
4083 | else if (strncmp (ufile, "../", 3) == 0) | |
4084 | { | |
4085 | if (!slash_seen) | |
4086 | { | |
4087 | *targ++ = '['; | |
4088 | slash_seen = 1; | |
4089 | } | |
4090 | *targ++ = '-'; | |
4091 | ufile += 2; /* skip the dots */ | |
4092 | if (index (&ufile[1], '/')) | |
4093 | *targ++ = '.'; | |
4094 | else | |
4095 | *targ++ = ']'; | |
4096 | } | |
4097 | else | |
4098 | *targ++ = *ufile; | |
4099 | break; | |
4100 | ||
4101 | default: | |
4102 | *targ++ = *ufile; | |
4103 | break; | |
4104 | } | |
4105 | ufile++; | |
4106 | } | |
4107 | *targ = '\0'; | |
4108 | ||
4109 | return utbuf; | |
4110 | } | |
4111 | ||
4112 | char * | |
4113 | getwd (pathname) | |
4114 | char *pathname; | |
4115 | { | |
f4a7e5bd | 4116 | char *ptr, *val; |
210b2b4f | 4117 | extern char *getcwd (); |
86a5659e | 4118 | |
210b2b4f JB |
4119 | #define MAXPATHLEN 1024 |
4120 | ||
9ac0d9e0 | 4121 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
4122 | val = getcwd (ptr, MAXPATHLEN); |
4123 | if (val == 0) | |
4124 | { | |
4125 | xfree (ptr); | |
4126 | return val; | |
4127 | } | |
210b2b4f | 4128 | strcpy (pathname, ptr); |
9ac0d9e0 | 4129 | xfree (ptr); |
210b2b4f JB |
4130 | |
4131 | return pathname; | |
86a5659e JB |
4132 | } |
4133 | ||
4134 | getppid () | |
4135 | { | |
4136 | long item_code = JPI$_OWNER; | |
4137 | unsigned long parent_id; | |
4138 | int status; | |
4139 | ||
4140 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
4141 | { | |
4142 | errno = EVMSERR; | |
4143 | vaxc$errno = status; | |
4144 | return -1; | |
4145 | } | |
4146 | return parent_id; | |
4147 | } | |
4148 | ||
4149 | #undef getuid | |
4150 | unsigned | |
4151 | sys_getuid () | |
4152 | { | |
4153 | return (getgid () << 16) | getuid (); | |
4154 | } | |
4155 | ||
4156 | int | |
4157 | sys_read (fildes, buf, nbyte) | |
4158 | int fildes; | |
4159 | char *buf; | |
4160 | unsigned int nbyte; | |
4161 | { | |
4162 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
4163 | } | |
4164 | ||
4165 | #if 0 | |
4166 | int | |
4167 | sys_write (fildes, buf, nbyte) | |
4168 | int fildes; | |
4169 | char *buf; | |
4170 | unsigned int nbyte; | |
4171 | { | |
4172 | register int nwrote, rtnval = 0; | |
4173 | ||
4174 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4175 | nbyte -= nwrote; | |
4176 | buf += nwrote; | |
4177 | rtnval += nwrote; | |
4178 | } | |
4179 | if (nwrote < 0) | |
4180 | return rtnval ? rtnval : -1; | |
4181 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4182 | return rtnval ? rtnval : -1; | |
4183 | return (rtnval + nwrote); | |
4184 | } | |
4185 | #endif /* 0 */ | |
4186 | ||
4187 | /* | |
4188 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4189 | * end with a newline (carriage return) character, and if they | |
4190 | * don't it adds one (nice of it isn't it!) | |
4191 | * | |
4192 | * Thus we do this stupidity below. | |
4193 | */ | |
4194 | ||
4195 | int | |
4196 | sys_write (fildes, buf, nbytes) | |
4197 | int fildes; | |
4198 | char *buf; | |
4199 | unsigned int nbytes; | |
4200 | { | |
4201 | register char *p; | |
4202 | register char *e; | |
23b0668c JB |
4203 | int sum = 0; |
4204 | struct stat st; | |
4205 | ||
4206 | fstat (fildes, &st); | |
86a5659e | 4207 | p = buf; |
86a5659e JB |
4208 | while (nbytes > 0) |
4209 | { | |
23b0668c JB |
4210 | int len, retval; |
4211 | ||
4212 | /* Handle fixed-length files with carriage control. */ | |
4213 | if (st.st_fab_rfm == FAB$C_FIX | |
4214 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4215 | { | |
4216 | len = st.st_fab_mrs; | |
4217 | retval = write (fildes, p, min (len, nbytes)); | |
4218 | if (retval != len) | |
4219 | return -1; | |
4220 | retval++; /* This skips the implied carriage control */ | |
4221 | } | |
4222 | else | |
4223 | { | |
4224 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4225 | while (*e != '\n' && e > p) e--; | |
4226 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4227 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4228 | len = e + 1 - p; | |
4229 | retval = write (fildes, p, len); | |
4230 | if (retval != len) | |
4231 | return -1; | |
4232 | } | |
4233 | p += retval; | |
4234 | sum += retval; | |
86a5659e JB |
4235 | nbytes -= retval; |
4236 | } | |
4237 | return sum; | |
4238 | } | |
4239 | ||
4240 | /* Create file NEW copying its attributes from file OLD. If | |
4241 | OLD is 0 or does not exist, create based on the value of | |
4242 | vms_stmlf_recfm. */ | |
4243 | ||
4244 | /* Protection value the file should ultimately have. | |
4245 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4246 | static unsigned short int fab_final_pro; | |
4247 | ||
4248 | int | |
4249 | creat_copy_attrs (old, new) | |
4250 | char *old, *new; | |
4251 | { | |
4252 | struct FAB fab = cc$rms_fab; | |
4253 | struct XABPRO xabpro; | |
4254 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4255 | extern int vms_stmlf_recfm; | |
4256 | ||
4257 | if (old) | |
4258 | { | |
4259 | fab.fab$b_fac = FAB$M_GET; | |
4260 | fab.fab$l_fna = old; | |
4261 | fab.fab$b_fns = strlen (old); | |
4262 | fab.fab$l_xab = (char *) &xabpro; | |
4263 | xabpro = cc$rms_xabpro; | |
4264 | xabpro.xab$l_aclbuf = aclbuf; | |
4265 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4266 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4267 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4268 | { |
986ffb24 | 4269 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4270 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4271 | if (xabpro.xab$w_acllen > 0) | |
4272 | { | |
4273 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4274 | /* If the acl buffer was too short, redo open with longer one. | |
4275 | Wouldn't need to do this if there were some system imposed | |
4276 | limit on the size of an ACL, but I can't find any such. */ | |
4277 | { | |
4278 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4279 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4280 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4281 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4282 | else |
4283 | old = 0; | |
4284 | } | |
4285 | } | |
4286 | else | |
4287 | xabpro.xab$l_aclbuf = 0; | |
4288 | } | |
4289 | else | |
4290 | old = 0; | |
4291 | } | |
4292 | fab.fab$l_fna = new; | |
4293 | fab.fab$b_fns = strlen (new); | |
4294 | if (!old) | |
4295 | { | |
4296 | fab.fab$l_xab = 0; | |
4297 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4298 | fab.fab$b_rat = FAB$M_CR; | |
4299 | } | |
4300 | ||
4301 | /* Set the file protections such that we will be able to manipulate | |
4302 | this file. Once we are done writing and renaming it, we will set | |
4303 | the protections back. */ | |
4304 | if (old) | |
4305 | fab_final_pro = xabpro.xab$w_pro; | |
4306 | else | |
986ffb24 | 4307 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4308 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4309 | ||
4310 | /* Create the new file with either default attrs or attrs copied | |
4311 | from old file. */ | |
4312 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4313 | return -1; | |
986ffb24 | 4314 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4315 | /* As this is a "replacement" for creat, return a file descriptor |
4316 | opened for writing. */ | |
4317 | return open (new, O_WRONLY); | |
4318 | } | |
4319 | ||
4320 | #ifdef creat | |
4321 | #undef creat | |
4322 | #include <varargs.h> | |
4323 | #ifdef __GNUC__ | |
4324 | #ifndef va_count | |
4325 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4326 | #endif | |
4327 | #endif | |
4328 | ||
4329 | sys_creat (va_alist) | |
4330 | va_dcl | |
4331 | { | |
eb8c3be9 | 4332 | va_list list_incrementer; |
86a5659e JB |
4333 | char *name; |
4334 | int mode; | |
4335 | int rfd; /* related file descriptor */ | |
4336 | int fd; /* Our new file descriptor */ | |
4337 | int count; | |
4338 | struct stat st_buf; | |
4339 | char rfm[12]; | |
4340 | char rat[15]; | |
4341 | char mrs[13]; | |
4342 | char fsz[13]; | |
4343 | extern int vms_stmlf_recfm; | |
4344 | ||
4345 | va_count (count); | |
eb8c3be9 JB |
4346 | va_start (list_incrementer); |
4347 | name = va_arg (list_incrementer, char *); | |
4348 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4349 | if (count > 2) |
eb8c3be9 JB |
4350 | rfd = va_arg (list_incrementer, int); |
4351 | va_end (list_incrementer); | |
86a5659e JB |
4352 | if (count > 2) |
4353 | { | |
4354 | /* Use information from the related file descriptor to set record | |
4355 | format of the newly created file. */ | |
4356 | fstat (rfd, &st_buf); | |
4357 | switch (st_buf.st_fab_rfm) | |
4358 | { | |
4359 | case FAB$C_FIX: | |
4360 | strcpy (rfm, "rfm = fix"); | |
4361 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4362 | strcpy (rat, "rat = "); | |
4363 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4364 | strcat (rat, "cr"); | |
4365 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4366 | strcat (rat, "ftn"); | |
4367 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4368 | strcat (rat, "prn"); | |
4369 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4370 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4371 | strcat (rat, ", blk"); | |
4372 | else | |
4373 | strcat (rat, "blk"); | |
4374 | return creat (name, 0, rfm, rat, mrs); | |
4375 | ||
4376 | case FAB$C_VFC: | |
4377 | strcpy (rfm, "rfm = vfc"); | |
4378 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4379 | strcpy (rat, "rat = "); | |
4380 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4381 | strcat (rat, "cr"); | |
4382 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4383 | strcat (rat, "ftn"); | |
4384 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4385 | strcat (rat, "prn"); | |
4386 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4387 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4388 | strcat (rat, ", blk"); | |
4389 | else | |
4390 | strcat (rat, "blk"); | |
4391 | return creat (name, 0, rfm, rat, fsz); | |
4392 | ||
4393 | case FAB$C_STM: | |
4394 | strcpy (rfm, "rfm = stm"); | |
4395 | break; | |
4396 | ||
4397 | case FAB$C_STMCR: | |
4398 | strcpy (rfm, "rfm = stmcr"); | |
4399 | break; | |
4400 | ||
4401 | case FAB$C_STMLF: | |
4402 | strcpy (rfm, "rfm = stmlf"); | |
4403 | break; | |
4404 | ||
4405 | case FAB$C_UDF: | |
4406 | strcpy (rfm, "rfm = udf"); | |
4407 | break; | |
4408 | ||
4409 | case FAB$C_VAR: | |
4410 | strcpy (rfm, "rfm = var"); | |
4411 | break; | |
4412 | } | |
4413 | strcpy (rat, "rat = "); | |
4414 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4415 | strcat (rat, "cr"); | |
4416 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4417 | strcat (rat, "ftn"); | |
4418 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4419 | strcat (rat, "prn"); | |
4420 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4421 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4422 | strcat (rat, ", blk"); | |
4423 | else | |
4424 | strcat (rat, "blk"); | |
4425 | } | |
4426 | else | |
4427 | { | |
4428 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4429 | strcpy (rat, "rat=cr"); | |
4430 | } | |
4431 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4432 | mode 0 to get the user's default protection. */ | |
4433 | fd = creat (name, 0, rfm, rat); | |
4434 | if (fd < 0 && errno == EEXIST) | |
4435 | { | |
4436 | if (unlink (name) < 0) | |
4437 | report_file_error ("delete", build_string (name)); | |
4438 | fd = creat (name, 0, rfm, rat); | |
4439 | } | |
4440 | return fd; | |
4441 | } | |
4442 | #endif /* creat */ | |
4443 | ||
4444 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
4445 | sys_fwrite (ptr, size, num, fp) | |
4446 | register char * ptr; | |
4447 | FILE * fp; | |
4448 | { | |
4449 | register int tot = num * size; | |
4450 | ||
4451 | while (tot--) | |
4452 | fputc (*ptr++, fp); | |
4453 | } | |
4454 | ||
4455 | /* | |
4456 | * The VMS C library routine creat actually creates a new version of an | |
4457 | * existing file rather than truncating the old version. There are times | |
4458 | * when this is not the desired behavior, for instance, when writing an | |
4459 | * auto save file (you only want one version), or when you don't have | |
4460 | * write permission in the directory containing the file (but the file | |
4461 | * itself is writable). Hence this routine, which is equivalent to | |
4462 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4463 | */ | |
4464 | int | |
4465 | vms_truncate (fn) | |
4466 | char *fn; | |
4467 | { | |
4468 | struct FAB xfab = cc$rms_fab; | |
4469 | struct RAB xrab = cc$rms_rab; | |
4470 | int status; | |
4471 | ||
4472 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4473 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4474 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4475 | xfab.fab$l_fna = fn; | |
4476 | xfab.fab$b_fns = strlen (fn); | |
4477 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4478 | xfab.fab$b_dns = 2; | |
4479 | xrab.rab$l_fab = &xfab; | |
4480 | ||
4481 | /* This gibberish opens the file, positions to the first record, and | |
4482 | deletes all records from there until the end of file. */ | |
986ffb24 | 4483 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4484 | { |
986ffb24 JB |
4485 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4486 | (SYS$FIND (&xrab) & 01) == 01 && | |
4487 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4488 | status = 0; |
4489 | else | |
4490 | status = -1; | |
4491 | } | |
4492 | else | |
4493 | status = -1; | |
986ffb24 | 4494 | SYS$CLOSE (&xfab); |
86a5659e JB |
4495 | return status; |
4496 | } | |
4497 | ||
4498 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4499 | SYSPRV or a readable SYSUAF.DAT. */ | |
4500 | ||
4501 | #ifdef READ_SYSUAF | |
4502 | /* | |
4503 | * getuaf.c | |
4504 | * | |
4505 | * Routine to read the VMS User Authorization File and return | |
4506 | * a specific user's record. | |
4507 | */ | |
4508 | ||
4509 | static struct UAF retuaf; | |
4510 | ||
4511 | struct UAF * | |
4512 | get_uaf_name (uname) | |
4513 | char * uname; | |
4514 | { | |
4515 | register status; | |
4516 | struct FAB uaf_fab; | |
4517 | struct RAB uaf_rab; | |
4518 | ||
4519 | uaf_fab = cc$rms_fab; | |
4520 | uaf_rab = cc$rms_rab; | |
4521 | /* initialize fab fields */ | |
4522 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4523 | uaf_fab.fab$b_fns = 21; | |
4524 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4525 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4526 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4527 | /* initialize rab fields */ | |
4528 | uaf_rab.rab$l_fab = &uaf_fab; | |
4529 | /* open the User Authorization File */ | |
986ffb24 | 4530 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4531 | if (!(status&1)) |
4532 | { | |
4533 | errno = EVMSERR; | |
4534 | vaxc$errno = status; | |
4535 | return 0; | |
4536 | } | |
986ffb24 | 4537 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4538 | if (!(status&1)) |
4539 | { | |
4540 | errno = EVMSERR; | |
4541 | vaxc$errno = status; | |
4542 | return 0; | |
4543 | } | |
4544 | /* read the requested record - index is in uname */ | |
4545 | uaf_rab.rab$l_kbf = uname; | |
4546 | uaf_rab.rab$b_ksz = strlen (uname); | |
4547 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4548 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4549 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4550 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4551 | if (!(status&1)) |
4552 | { | |
4553 | errno = EVMSERR; | |
4554 | vaxc$errno = status; | |
4555 | return 0; | |
4556 | } | |
4557 | /* close the User Authorization File */ | |
986ffb24 | 4558 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4559 | if (!(status&1)) |
4560 | { | |
4561 | errno = EVMSERR; | |
4562 | vaxc$errno = status; | |
4563 | return 0; | |
4564 | } | |
986ffb24 | 4565 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4566 | if (!(status&1)) |
4567 | { | |
4568 | errno = EVMSERR; | |
4569 | vaxc$errno = status; | |
4570 | return 0; | |
4571 | } | |
4572 | return &retuaf; | |
4573 | } | |
4574 | ||
4575 | struct UAF * | |
4576 | get_uaf_uic (uic) | |
4577 | unsigned long uic; | |
4578 | { | |
4579 | register status; | |
4580 | struct FAB uaf_fab; | |
4581 | struct RAB uaf_rab; | |
4582 | ||
4583 | uaf_fab = cc$rms_fab; | |
4584 | uaf_rab = cc$rms_rab; | |
4585 | /* initialize fab fields */ | |
4586 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4587 | uaf_fab.fab$b_fns = 21; | |
4588 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4589 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4590 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4591 | /* initialize rab fields */ | |
4592 | uaf_rab.rab$l_fab = &uaf_fab; | |
4593 | /* open the User Authorization File */ | |
986ffb24 | 4594 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4595 | if (!(status&1)) |
4596 | { | |
4597 | errno = EVMSERR; | |
4598 | vaxc$errno = status; | |
4599 | return 0; | |
4600 | } | |
986ffb24 | 4601 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4602 | if (!(status&1)) |
4603 | { | |
4604 | errno = EVMSERR; | |
4605 | vaxc$errno = status; | |
4606 | return 0; | |
4607 | } | |
4608 | /* read the requested record - index is in uic */ | |
4609 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4610 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4611 | uaf_rab.rab$b_ksz = sizeof uic; | |
4612 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4613 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4614 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4615 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4616 | if (!(status&1)) |
4617 | { | |
4618 | errno = EVMSERR; | |
4619 | vaxc$errno = status; | |
4620 | return 0; | |
4621 | } | |
4622 | /* close the User Authorization File */ | |
986ffb24 | 4623 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4624 | if (!(status&1)) |
4625 | { | |
4626 | errno = EVMSERR; | |
4627 | vaxc$errno = status; | |
4628 | return 0; | |
4629 | } | |
986ffb24 | 4630 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4631 | if (!(status&1)) |
4632 | { | |
4633 | errno = EVMSERR; | |
4634 | vaxc$errno = status; | |
4635 | return 0; | |
4636 | } | |
4637 | return &retuaf; | |
4638 | } | |
4639 | ||
4640 | static struct passwd retpw; | |
4641 | ||
4642 | struct passwd * | |
4643 | cnv_uaf_pw (up) | |
4644 | struct UAF * up; | |
4645 | { | |
4646 | char * ptr; | |
4647 | ||
4648 | /* copy these out first because if the username is 32 chars, the next | |
4649 | section will overwrite the first byte of the UIC */ | |
4650 | retpw.pw_uid = up->uaf$w_mem; | |
4651 | retpw.pw_gid = up->uaf$w_grp; | |
4652 | ||
ea5a0917 | 4653 | /* I suppose this is not the best style, to possibly overwrite one |
86a5659e JB |
4654 | byte beyond the end of the field, but what the heck... */ |
4655 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4656 | while (ptr[-1] == ' ') | |
4657 | ptr--; | |
4658 | *ptr = '\0'; | |
4659 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4660 | ||
4661 | /* the rest of these are counted ascii strings */ | |
4662 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4663 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4664 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4665 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4666 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4667 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4668 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4669 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4670 | ||
4671 | return &retpw; | |
4672 | } | |
4673 | #else /* not READ_SYSUAF */ | |
4674 | static struct passwd retpw; | |
4675 | #endif /* not READ_SYSUAF */ | |
4676 | ||
4677 | struct passwd * | |
4678 | getpwnam (name) | |
4679 | char * name; | |
4680 | { | |
4681 | #ifdef READ_SYSUAF | |
4682 | struct UAF *up; | |
4683 | #else | |
4684 | char * user; | |
4685 | char * dir; | |
4686 | unsigned char * full; | |
4687 | #endif /* READ_SYSUAF */ | |
4688 | char *ptr = name; | |
4689 | ||
4690 | while (*ptr) | |
4691 | { | |
4692 | if ('a' <= *ptr && *ptr <= 'z') | |
4693 | *ptr -= 040; | |
4694 | ptr++; | |
4695 | } | |
4696 | #ifdef READ_SYSUAF | |
4697 | if (!(up = get_uaf_name (name))) | |
4698 | return 0; | |
4699 | return cnv_uaf_pw (up); | |
4700 | #else | |
4701 | if (strcmp (name, getenv ("USER")) == 0) | |
4702 | { | |
4703 | retpw.pw_uid = getuid (); | |
4704 | retpw.pw_gid = getgid (); | |
4705 | strcpy (retpw.pw_name, name); | |
4706 | if (full = egetenv ("FULLNAME")) | |
4707 | strcpy (retpw.pw_gecos, full); | |
4708 | else | |
4709 | *retpw.pw_gecos = '\0'; | |
4710 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4711 | *retpw.pw_shell = '\0'; | |
4712 | return &retpw; | |
4713 | } | |
4714 | else | |
4715 | return 0; | |
4716 | #endif /* not READ_SYSUAF */ | |
4717 | } | |
4718 | ||
4719 | struct passwd * | |
4720 | getpwuid (uid) | |
4721 | unsigned long uid; | |
4722 | { | |
4723 | #ifdef READ_SYSUAF | |
4724 | struct UAF * up; | |
4725 | ||
4726 | if (!(up = get_uaf_uic (uid))) | |
4727 | return 0; | |
4728 | return cnv_uaf_pw (up); | |
4729 | #else | |
4730 | if (uid == sys_getuid ()) | |
4731 | return getpwnam (egetenv ("USER")); | |
4732 | else | |
4733 | return 0; | |
4734 | #endif /* not READ_SYSUAF */ | |
4735 | } | |
4736 | ||
4737 | /* return total address space available to the current process. This is | |
4738 | the sum of the current p0 size, p1 size and free page table entries | |
4739 | available. */ | |
4740 | vlimit () | |
4741 | { | |
4742 | int item_code; | |
4743 | unsigned long free_pages; | |
4744 | unsigned long frep0va; | |
4745 | unsigned long frep1va; | |
4746 | register status; | |
4747 | ||
4748 | item_code = JPI$_FREPTECNT; | |
4749 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4750 | { | |
4751 | errno = EVMSERR; | |
4752 | vaxc$errno = status; | |
4753 | return -1; | |
4754 | } | |
4755 | free_pages *= 512; | |
4756 | ||
4757 | item_code = JPI$_FREP0VA; | |
4758 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4759 | { | |
4760 | errno = EVMSERR; | |
4761 | vaxc$errno = status; | |
4762 | return -1; | |
4763 | } | |
4764 | item_code = JPI$_FREP1VA; | |
4765 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4766 | { | |
4767 | errno = EVMSERR; | |
4768 | vaxc$errno = status; | |
4769 | return -1; | |
4770 | } | |
4771 | ||
4772 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4773 | } | |
4774 | ||
4775 | define_logical_name (varname, string) | |
4776 | char *varname; | |
4777 | char *string; | |
4778 | { | |
4779 | struct dsc$descriptor_s strdsc = | |
4780 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4781 | struct dsc$descriptor_s envdsc = | |
4782 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4783 | struct dsc$descriptor_s lnmdsc = | |
4784 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4785 | ||
4786 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4787 | } | |
4788 | ||
4789 | delete_logical_name (varname) | |
4790 | char *varname; | |
4791 | { | |
4792 | struct dsc$descriptor_s envdsc = | |
4793 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4794 | struct dsc$descriptor_s lnmdsc = | |
4795 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4796 | ||
4797 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4798 | } | |
4799 | ||
4800 | ulimit () | |
4801 | {} | |
4802 | ||
86a5659e JB |
4803 | setpgrp () |
4804 | {} | |
4805 | ||
4806 | execvp () | |
4807 | { | |
4808 | error ("execvp system call not implemented"); | |
4809 | } | |
4810 | ||
4811 | int | |
4812 | rename (from, to) | |
4813 | char *from, *to; | |
4814 | { | |
4815 | int status; | |
4816 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4817 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4818 | char from_esn[NAM$C_MAXRSS]; | |
4819 | char to_esn[NAM$C_MAXRSS]; | |
4820 | ||
4821 | from_fab.fab$l_fna = from; | |
4822 | from_fab.fab$b_fns = strlen (from); | |
4823 | from_fab.fab$l_nam = &from_nam; | |
4824 | from_fab.fab$l_fop = FAB$M_NAM; | |
4825 | ||
4826 | from_nam.nam$l_esa = from_esn; | |
4827 | from_nam.nam$b_ess = sizeof from_esn; | |
4828 | ||
4829 | to_fab.fab$l_fna = to; | |
4830 | to_fab.fab$b_fns = strlen (to); | |
4831 | to_fab.fab$l_nam = &to_nam; | |
4832 | to_fab.fab$l_fop = FAB$M_NAM; | |
4833 | ||
4834 | to_nam.nam$l_esa = to_esn; | |
4835 | to_nam.nam$b_ess = sizeof to_esn; | |
4836 | ||
4837 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4838 | ||
4839 | if (status & 1) | |
4840 | return 0; | |
4841 | else | |
4842 | { | |
4843 | if (status == RMS$_DEV) | |
4844 | errno = EXDEV; | |
4845 | else | |
4846 | errno = EVMSERR; | |
4847 | vaxc$errno = status; | |
4848 | return -1; | |
4849 | } | |
4850 | } | |
4851 | ||
4852 | /* This function renames a file like `rename', but it strips | |
4853 | the version number from the "to" filename, such that the "to" file is | |
4854 | will always be a new version. It also sets the file protection once it is | |
4855 | finished. The protection that we will use is stored in fab_final_pro, | |
4856 | and was set when we did a creat_copy_attrs to create the file that we | |
4857 | are renaming. | |
4858 | ||
4859 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4860 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4861 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4862 | the W and D bits together. */ | |
4863 | ||
4864 | ||
4865 | static struct fibdef fib; /* We need this initialized to zero */ | |
4866 | char vms_file_written[NAM$C_MAXRSS]; | |
4867 | ||
4868 | int | |
4869 | rename_sans_version (from,to) | |
4870 | char *from, *to; | |
4871 | { | |
4872 | short int chan; | |
4873 | int stat; | |
4874 | short int iosb[4]; | |
4875 | int status; | |
4876 | struct FAB to_fab = cc$rms_fab; | |
4877 | struct NAM to_nam = cc$rms_nam; | |
4878 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4879 | struct dsc$descriptor fib_attr[2] | |
4880 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4881 | char to_esn[NAM$C_MAXRSS]; | |
4882 | ||
4883 | $DESCRIPTOR (disk,to_esn); | |
4884 | ||
4885 | to_fab.fab$l_fna = to; | |
4886 | to_fab.fab$b_fns = strlen (to); | |
4887 | to_fab.fab$l_nam = &to_nam; | |
4888 | to_fab.fab$l_fop = FAB$M_NAM; | |
4889 | ||
4890 | to_nam.nam$l_esa = to_esn; | |
4891 | to_nam.nam$b_ess = sizeof to_esn; | |
4892 | ||
4893 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4894 | ||
4895 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4896 | *(to_nam.nam$l_ver) = '\0'; | |
4897 | ||
4898 | stat = rename (from, to_esn); | |
4899 | if (stat < 0) | |
4900 | return stat; | |
4901 | ||
4902 | strcpy (vms_file_written, to_esn); | |
4903 | ||
4904 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4905 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4906 | ||
4907 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4908 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4909 | |
4910 | /* Copy these fields into the fib */ | |
4911 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4912 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4913 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4914 | ||
986ffb24 | 4915 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4916 | |
986ffb24 | 4917 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4918 | if (!stat) |
986ffb24 JB |
4919 | LIB$SIGNAL (stat); |
4920 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4921 | 0, 0, 0, &fib_attr, 0); |
4922 | if (!stat) | |
986ffb24 JB |
4923 | LIB$SIGNAL (stat); |
4924 | stat = SYS$DASSGN (chan); | |
86a5659e | 4925 | if (!stat) |
986ffb24 | 4926 | LIB$SIGNAL (stat); |
0137dbf7 | 4927 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4928 | return 0; |
4929 | } | |
4930 | ||
4931 | link (file, new) | |
4932 | char * file, * new; | |
4933 | { | |
4934 | register status; | |
4935 | struct FAB fab; | |
4936 | struct NAM nam; | |
4937 | unsigned short fid[3]; | |
4938 | char esa[NAM$C_MAXRSS]; | |
4939 | ||
4940 | fab = cc$rms_fab; | |
4941 | fab.fab$l_fop = FAB$M_OFP; | |
4942 | fab.fab$l_fna = file; | |
4943 | fab.fab$b_fns = strlen (file); | |
4944 | fab.fab$l_nam = &nam; | |
4945 | ||
4946 | nam = cc$rms_nam; | |
4947 | nam.nam$l_esa = esa; | |
4948 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4949 | ||
4950 | status = SYS$PARSE (&fab); | |
4951 | if ((status & 1) == 0) | |
4952 | { | |
4953 | errno = EVMSERR; | |
4954 | vaxc$errno = status; | |
4955 | return -1; | |
4956 | } | |
4957 | status = SYS$SEARCH (&fab); | |
4958 | if ((status & 1) == 0) | |
4959 | { | |
4960 | errno = EVMSERR; | |
4961 | vaxc$errno = status; | |
4962 | return -1; | |
4963 | } | |
4964 | ||
4965 | fid[0] = nam.nam$w_fid[0]; | |
4966 | fid[1] = nam.nam$w_fid[1]; | |
4967 | fid[2] = nam.nam$w_fid[2]; | |
4968 | ||
4969 | fab.fab$l_fna = new; | |
4970 | fab.fab$b_fns = strlen (new); | |
4971 | ||
4972 | status = SYS$PARSE (&fab); | |
4973 | if ((status & 1) == 0) | |
4974 | { | |
4975 | errno = EVMSERR; | |
4976 | vaxc$errno = status; | |
4977 | return -1; | |
4978 | } | |
4979 | ||
4980 | nam.nam$w_fid[0] = fid[0]; | |
4981 | nam.nam$w_fid[1] = fid[1]; | |
4982 | nam.nam$w_fid[2] = fid[2]; | |
4983 | ||
4984 | nam.nam$l_esa = nam.nam$l_name; | |
4985 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
4986 | ||
4987 | status = SYS$ENTER (&fab); | |
4988 | if ((status & 1) == 0) | |
4989 | { | |
4990 | errno = EVMSERR; | |
4991 | vaxc$errno = status; | |
4992 | return -1; | |
4993 | } | |
4994 | ||
4995 | return 0; | |
4996 | } | |
4997 | ||
4998 | croak (badfunc) | |
4999 | char *badfunc; | |
5000 | { | |
5001 | printf ("%s not yet implemented\r\n", badfunc); | |
5002 | reset_sys_modes (); | |
5003 | exit (1); | |
5004 | } | |
5005 | ||
5006 | long | |
5007 | random () | |
5008 | { | |
5009 | /* Arrange to return a range centered on zero. */ | |
5010 | return rand () - (1 << 30); | |
5011 | } | |
5012 | ||
5013 | srandom (seed) | |
5014 | { | |
5015 | srand (seed); | |
5016 | } | |
5017 | #endif /* VMS */ | |
5018 | \f | |
b97ab886 | 5019 | #ifdef AIXHFT |
86a5659e JB |
5020 | |
5021 | /* Called from init_sys_modes. */ | |
5022 | hft_init () | |
5023 | { | |
5024 | int junk; | |
5025 | ||
5026 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
5027 | if we are on an HFT by trying to get an HFT error code. If this | |
5028 | call fails, we're not on an HFT. */ | |
5029 | #ifdef IBMR2AIX | |
5030 | if (ioctl (0, HFQERROR, &junk) < 0) | |
5031 | return; | |
5032 | #else /* not IBMR2AIX */ | |
5033 | if (ioctl (0, HFQEIO, 0) < 0) | |
5034 | return; | |
5035 | #endif /* not IBMR2AIX */ | |
5036 | ||
5037 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
5038 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
5039 | there's no way to determine the old mapping, so in reset_sys_modes | |
5040 | we need to assume that the normal map had been present. Of course, this | |
5041 | code also doesn't help if on a terminal emulator which doesn't understand | |
5042 | HFT VTD's. */ | |
5043 | { | |
5044 | struct hfbuf buf; | |
5045 | struct hfkeymap keymap; | |
5046 | ||
5047 | buf.hf_bufp = (char *)&keymap; | |
5048 | buf.hf_buflen = sizeof (keymap); | |
5049 | keymap.hf_nkeys = 2; | |
5050 | keymap.hfkey[0].hf_kpos = 15; | |
5051 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5052 | #ifdef IBMR2AIX | |
5053 | keymap.hfkey[0].hf_keyidh = '<'; | |
5054 | #else /* not IBMR2AIX */ | |
5055 | keymap.hfkey[0].hf_page = '<'; | |
5056 | #endif /* not IBMR2AIX */ | |
5057 | keymap.hfkey[0].hf_char = 127; | |
5058 | keymap.hfkey[1].hf_kpos = 15; | |
5059 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5060 | #ifdef IBMR2AIX | |
5061 | keymap.hfkey[1].hf_keyidh = '<'; | |
5062 | #else /* not IBMR2AIX */ | |
5063 | keymap.hfkey[1].hf_page = '<'; | |
5064 | #endif /* not IBMR2AIX */ | |
5065 | keymap.hfkey[1].hf_char = 127; | |
5066 | hftctl (0, HFSKBD, &buf); | |
5067 | } | |
5068 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
5069 | at times. */ | |
5070 | line_ins_del_ok = char_ins_del_ok = 0; | |
5071 | } | |
5072 | ||
5073 | /* Reset the rubout key to backspace. */ | |
5074 | ||
5075 | hft_reset () | |
5076 | { | |
5077 | struct hfbuf buf; | |
5078 | struct hfkeymap keymap; | |
5079 | int junk; | |
5080 | ||
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 | buf.hf_bufp = (char *)&keymap; | |
5090 | buf.hf_buflen = sizeof (keymap); | |
5091 | keymap.hf_nkeys = 2; | |
5092 | keymap.hfkey[0].hf_kpos = 15; | |
5093 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
5094 | #ifdef IBMR2AIX | |
5095 | keymap.hfkey[0].hf_keyidh = '<'; | |
5096 | #else /* not IBMR2AIX */ | |
5097 | keymap.hfkey[0].hf_page = '<'; | |
5098 | #endif /* not IBMR2AIX */ | |
5099 | keymap.hfkey[0].hf_char = 8; | |
5100 | keymap.hfkey[1].hf_kpos = 15; | |
5101 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
5102 | #ifdef IBMR2AIX | |
5103 | keymap.hfkey[1].hf_keyidh = '<'; | |
5104 | #else /* not IBMR2AIX */ | |
5105 | keymap.hfkey[1].hf_page = '<'; | |
5106 | #endif /* not IBMR2AIX */ | |
5107 | keymap.hfkey[1].hf_char = 8; | |
5108 | hftctl (0, HFSKBD, &buf); | |
5109 | } | |
5110 | ||
b97ab886 | 5111 | #endif /* AIXHFT */ |
c238be24 RS |
5112 | |
5113 | #ifdef USE_DL_STUBS | |
5114 | ||
5115 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
5116 | X11 libraries may refer to these functions but (we hope) do not | |
5117 | actually call them. */ | |
5118 | ||
5119 | void * | |
5120 | dlopen () | |
5121 | { | |
5122 | return 0; | |
5123 | } | |
5124 | ||
5125 | void * | |
5126 | dlsym () | |
5127 | { | |
5128 | return 0; | |
5129 | } | |
5130 | ||
5131 | int | |
5132 | dlclose () | |
5133 | { | |
5134 | return -1; | |
5135 | } | |
5136 | ||
5137 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
5138 | \f |
5139 | #ifndef BSTRING | |
5140 | ||
5141 | #ifndef bzero | |
5142 | ||
5143 | void | |
5144 | bzero (b, length) | |
5145 | register char *b; | |
5146 | register int length; | |
5147 | { | |
5148 | #ifdef VMS | |
5149 | short zero = 0; | |
5150 | long max_str = 65535; | |
5151 | ||
5152 | while (length > max_str) { | |
5153 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5154 | length -= max_str; | |
5155 | b += max_str; | |
5156 | } | |
5157 | max_str = length; | |
5158 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
5159 | #else | |
5160 | while (length-- > 0) | |
5161 | *b++ = 0; | |
5162 | #endif /* not VMS */ | |
5163 | } | |
5164 | ||
5165 | #endif /* no bzero */ | |
5166 | #endif /* BSTRING */ | |
5167 | ||
c7f93f28 | 5168 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
51417996 RS |
5169 | #undef bcopy |
5170 | ||
5171 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5172 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5173 | bcopy (b1, b2, length) | |
5174 | register char *b1; | |
5175 | register char *b2; | |
5176 | register int length; | |
5177 | { | |
5178 | #ifdef VMS | |
5179 | long max_str = 65535; | |
5180 | ||
5181 | while (length > max_str) { | |
5182 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5183 | length -= max_str; | |
5184 | b1 += max_str; | |
5185 | b2 += max_str; | |
5186 | } | |
5187 | max_str = length; | |
5188 | (void) LIB$MOVC3 (&length, b1, b2); | |
5189 | #else | |
5190 | while (length-- > 0) | |
5191 | *b2++ = *b1++; | |
5192 | #endif /* not VMS */ | |
5193 | } | |
5194 | #endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ | |
5195 | ||
c7f93f28 | 5196 | #ifndef BSTRING |
51417996 RS |
5197 | #ifndef bcmp |
5198 | int | |
5199 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5200 | register char *b1; | |
5201 | register char *b2; | |
5202 | register int length; | |
5203 | { | |
5204 | #ifdef VMS | |
5205 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5206 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5207 | ||
5208 | return STR$COMPARE (&src1, &src2); | |
5209 | #else | |
5210 | while (length-- > 0) | |
5211 | if (*b1++ != *b2++) | |
5212 | return 1; | |
5213 | ||
5214 | return 0; | |
5215 | #endif /* not VMS */ | |
5216 | } | |
5217 | #endif /* no bcmp */ | |
5218 | #endif /* not BSTRING */ |