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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
22 | #include <setjmp.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
86a5659e | 25 | #include "lisp.h" |
9ac0d9e0 | 26 | #include "blockinput.h" |
86a5659e JB |
27 | #undef NULL |
28 | ||
29 | #define min(x,y) ((x) > (y) ? (y) : (x)) | |
30 | ||
31 | /* In this file, open, read and write refer to the system calls, | |
32 | not our sugared interfaces sys_open, sys_read and sys_write. | |
33 | Contrariwise, for systems where we use the system calls directly, | |
34 | define sys_read, etc. here as aliases for them. */ | |
35 | #ifndef read | |
36 | #define sys_read read | |
37 | #define sys_write write | |
38 | #endif /* `read' is not a macro */ | |
39 | ||
40 | #undef read | |
41 | #undef write | |
42 | ||
fe03522b RS |
43 | #ifdef WINDOWSNT |
44 | #define read _read | |
45 | #define write _write | |
46 | #include <windows.h> | |
47 | extern int errno; | |
48 | #endif /* not WINDOWSNT */ | |
49 | ||
86a5659e JB |
50 | #ifndef close |
51 | #define sys_close close | |
52 | #else | |
53 | #undef close | |
54 | #endif | |
55 | ||
56 | #ifndef open | |
57 | #define sys_open open | |
58 | #else /* `open' is a macro */ | |
59 | #undef open | |
60 | #endif /* `open' is a macro */ | |
61 | ||
986ffb24 JB |
62 | /* Does anyone other than VMS need this? */ |
63 | #ifndef fwrite | |
64 | #define sys_fwrite fwrite | |
65 | #else | |
66 | #undef fwrite | |
67 | #endif | |
68 | ||
e24f1d55 RS |
69 | #ifndef HAVE_H_ERRNO |
70 | extern int h_errno; | |
71 | #endif | |
72 | ||
86a5659e JB |
73 | #include <stdio.h> |
74 | #include <sys/types.h> | |
75 | #include <sys/stat.h> | |
76 | #include <errno.h> | |
77 | ||
dca8521c RS |
78 | /* Get _POSIX_VDISABLE, if it is available. */ |
79 | #ifdef HAVE_UNISTD_H | |
80 | #include <unistd.h> | |
81 | #endif | |
82 | ||
207bdbdb RS |
83 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
84 | #include <dos.h> | |
85 | #include "dosfns.h" | |
86 | #include "msdos.h" | |
87 | #include <sys/param.h> | |
88 | #endif | |
89 | ||
86a5659e | 90 | extern int errno; |
86a5659e | 91 | |
bb4bc8e2 RM |
92 | #ifdef VMS |
93 | #include <rms.h> | |
94 | #include <ttdef.h> | |
95 | #include <tt2def.h> | |
96 | #include <iodef.h> | |
97 | #include <ssdef.h> | |
98 | #include <descrip.h> | |
99 | #include <fibdef.h> | |
100 | #include <atrdef.h> | |
101 | #include <ctype.h> | |
102 | #include <string.h> | |
103 | #ifdef __GNUC__ | |
104 | #include <sys/file.h> | |
105 | #else | |
106 | #include <file.h> | |
107 | #endif | |
108 | #undef F_SETFL | |
109 | #ifndef RAB$C_BID | |
110 | #include <rab.h> | |
111 | #endif | |
fe03522b | 112 | #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ |
bb4bc8e2 RM |
113 | #endif /* VMS */ |
114 | ||
115 | #ifndef BSD4_1 | |
116 | #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG) | |
117 | because the vms compiler doesn't grok `defined' */ | |
118 | #include <fcntl.h> | |
119 | #endif | |
120 | #ifdef USG | |
121 | #ifndef USG5 | |
122 | #include <fcntl.h> | |
123 | #endif | |
124 | #endif | |
125 | #endif /* not 4.1 bsd */ | |
86a5659e | 126 | |
207bdbdb | 127 | #ifndef MSDOS |
86a5659e | 128 | #include <sys/ioctl.h> |
207bdbdb | 129 | #endif |
e04a4e0d | 130 | #include "systty.h" |
94c8642a | 131 | #include "syswait.h" |
86a5659e | 132 | |
86a5659e JB |
133 | #ifdef BROKEN_TIOCGWINSZ |
134 | #undef TIOCGWINSZ | |
8dca3179 | 135 | #undef TIOCSWINSZ |
86a5659e JB |
136 | #endif |
137 | ||
86a5659e JB |
138 | #ifdef USG |
139 | #include <sys/utsname.h> | |
140 | #include <string.h> | |
141 | #ifndef MEMORY_IN_STRING_H | |
142 | #include <memory.h> | |
143 | #endif | |
81444907 | 144 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
145 | #ifdef NEED_SIOCTL |
146 | #include <sys/sioctl.h> | |
147 | #endif | |
148 | #ifdef NEED_PTEM_H | |
149 | #include <sys/stream.h> | |
150 | #include <sys/ptem.h> | |
151 | #endif | |
81444907 | 152 | #endif /* TIOCGWINSZ or ISC4_0 */ |
86a5659e JB |
153 | #endif /* USG */ |
154 | ||
86a5659e JB |
155 | extern int quit_char; |
156 | ||
0137dbf7 | 157 | #include "frame.h" |
86a5659e JB |
158 | #include "window.h" |
159 | #include "termhooks.h" | |
160 | #include "termchar.h" | |
161 | #include "termopts.h" | |
162 | #include "dispextern.h" | |
163 | #include "process.h" | |
164 | ||
fe03522b RS |
165 | #ifdef WINDOWSNT |
166 | #include <direct.h> | |
167 | /* In process.h which conflicts with the local copy. */ | |
168 | #define _P_WAIT 0 | |
169 | int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); | |
170 | int _CRTAPI1 _getpid (void); | |
171 | #endif | |
172 | ||
86a5659e JB |
173 | #ifdef NONSYSTEM_DIR_LIBRARY |
174 | #include "ndir.h" | |
175 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
176 | ||
91bac16a JB |
177 | #include "syssignal.h" |
178 | #include "systime.h" | |
d79998bc KH |
179 | #ifdef HAVE_UTIME_H |
180 | #include <utime.h> | |
181 | #endif | |
182 | ||
183 | #ifndef HAVE_UTIMES | |
184 | #ifndef HAVE_STRUCT_UTIMBUF | |
185 | /* We want to use utime rather than utimes, but we couldn't find the | |
186 | structure declaration. We'll use the traditional one. */ | |
187 | struct utimbuf { | |
188 | long actime; | |
189 | long modtime; | |
190 | }; | |
191 | #endif | |
192 | #endif | |
86a5659e | 193 | |
a00d5589 RS |
194 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
195 | #ifndef LPASS8 | |
196 | #define LPASS8 0 | |
197 | #endif | |
198 | ||
199 | #ifdef BSD4_1 | |
200 | #define LNOFLSH 0100000 | |
201 | #endif | |
202 | ||
86a5659e JB |
203 | static int baud_convert[] = |
204 | #ifdef BAUD_CONVERT | |
205 | BAUD_CONVERT; | |
206 | #else | |
207 | { | |
208 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
209 | 1800, 2400, 4800, 9600, 19200, 38400 | |
210 | }; | |
211 | #endif | |
212 | ||
213 | extern short ospeed; | |
214 | ||
91bac16a | 215 | /* The file descriptor for Emacs's input terminal. |
0217ed57 RS |
216 | Under Unix, this is normally zero except when using X; |
217 | under VMS, we place the input channel number here. */ | |
218 | int input_fd; | |
64e971c3 RS |
219 | \f |
220 | /* Specify a different file descriptor for further input operations. */ | |
221 | ||
222 | void | |
223 | change_input_fd (fd) | |
224 | int fd; | |
225 | { | |
226 | input_fd = fd; | |
227 | } | |
228 | ||
229 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 230 | |
86a5659e JB |
231 | discard_tty_input () |
232 | { | |
fe03522b | 233 | #ifndef WINDOWSNT |
91bac16a | 234 | struct emacs_tty buf; |
86a5659e JB |
235 | |
236 | if (noninteractive) | |
237 | return; | |
238 | ||
239 | /* Discarding input is not safe when the input could contain | |
240 | replies from the X server. So don't do it. */ | |
241 | if (read_socket_hook) | |
242 | return; | |
243 | ||
244 | #ifdef VMS | |
245 | end_kbd_input (); | |
91bac16a JB |
246 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
247 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
248 | queue_kbd_input (); |
249 | #else /* not VMS */ | |
250 | #ifdef APOLLO | |
251 | { | |
252 | int zero = 0; | |
64e971c3 | 253 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
254 | } |
255 | #else /* not Apollo */ | |
fe03522b | 256 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 257 | while (dos_keyread () != -1) |
fe03522b | 258 | ; |
207bdbdb | 259 | #else /* not MSDOS */ |
91bac16a JB |
260 | EMACS_GET_TTY (input_fd, &buf); |
261 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 262 | #endif /* not MSDOS */ |
86a5659e JB |
263 | #endif /* not Apollo */ |
264 | #endif /* not VMS */ | |
fe03522b | 265 | #endif /* not WINDOWSNT */ |
86a5659e JB |
266 | } |
267 | ||
268 | #ifdef SIGTSTP | |
269 | ||
64e971c3 RS |
270 | /* Arrange for character C to be read as the next input from |
271 | the terminal. */ | |
272 | ||
86a5659e JB |
273 | stuff_char (c) |
274 | char c; | |
275 | { | |
23dab951 RS |
276 | if (read_socket_hook) |
277 | return; | |
278 | ||
86a5659e JB |
279 | /* Should perhaps error if in batch mode */ |
280 | #ifdef TIOCSTI | |
64e971c3 | 281 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 282 | #else /* no TIOCSTI */ |
71f06467 | 283 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
284 | #endif /* no TIOCSTI */ |
285 | } | |
286 | ||
287 | #endif /* SIGTSTP */ | |
64e971c3 | 288 | \f |
86a5659e JB |
289 | init_baud_rate () |
290 | { | |
86a5659e JB |
291 | if (noninteractive) |
292 | ospeed = 0; | |
293 | else | |
294 | { | |
fe03522b | 295 | #ifdef DOS_NT |
207bdbdb | 296 | ospeed = 15; |
fe03522b | 297 | #else /* not DOS_NT */ |
86a5659e | 298 | #ifdef VMS |
91bac16a JB |
299 | struct sensemode sg; |
300 | ||
301 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 302 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
303 | ospeed = sg.xmit_baud; |
304 | #else /* not VMS */ | |
e04a4e0d JB |
305 | #ifdef HAVE_TERMIOS |
306 | struct termios sg; | |
91bac16a | 307 | |
71f06467 | 308 | sg.c_cflag = B9600; |
64e971c3 | 309 | tcgetattr (input_fd, &sg); |
d7272cff | 310 | ospeed = cfgetospeed (&sg); |
5baff9ce | 311 | #if defined (USE_GETOBAUD) && defined (getobaud) |
2f43149b RS |
312 | /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ |
313 | if (ospeed == 0) | |
314 | ospeed = getobaud (sg.c_cflag); | |
315 | #endif | |
e04a4e0d JB |
316 | #else /* neither VMS nor TERMIOS */ |
317 | #ifdef HAVE_TERMIO | |
318 | struct termio sg; | |
91bac16a | 319 | |
71f06467 | 320 | sg.c_cflag = B9600; |
e04a4e0d | 321 | #ifdef HAVE_TCATTR |
64e971c3 | 322 | tcgetattr (input_fd, &sg); |
e04a4e0d | 323 | #else |
6c65530f | 324 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 325 | #endif |
91bac16a | 326 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 327 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
328 | struct sgttyb sg; |
329 | ||
330 | sg.sg_ospeed = B9600; | |
64e971c3 | 331 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 332 | abort (); |
91bac16a | 333 | ospeed = sg.sg_ospeed; |
91bac16a | 334 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 335 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 336 | #endif /* not VMS */ |
fe03522b | 337 | #endif /* not DOS_NT */ |
86a5659e JB |
338 | } |
339 | ||
340 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
fe03522b | 341 | ? baud_convert[ospeed] : 9600); |
86a5659e JB |
342 | if (baud_rate == 0) |
343 | baud_rate = 1200; | |
344 | } | |
345 | ||
346 | /*ARGSUSED*/ | |
347 | set_exclusive_use (fd) | |
348 | int fd; | |
349 | { | |
350 | #ifdef FIOCLEX | |
351 | ioctl (fd, FIOCLEX, 0); | |
352 | #endif | |
353 | /* Ok to do nothing if this feature does not exist */ | |
354 | } | |
64e971c3 | 355 | \f |
86a5659e JB |
356 | #ifndef subprocesses |
357 | ||
358 | wait_without_blocking () | |
359 | { | |
360 | #ifdef BSD | |
361 | wait3 (0, WNOHANG | WUNTRACED, 0); | |
362 | #else | |
363 | croak ("wait_without_blocking"); | |
364 | #endif | |
365 | synch_process_alive = 0; | |
366 | } | |
367 | ||
368 | #endif /* not subprocesses */ | |
369 | ||
370 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 371 | (at least for bsd). */ |
86a5659e JB |
372 | |
373 | SIGTYPE | |
374 | wait_for_termination_signal () | |
375 | {} | |
376 | ||
377 | /* Wait for subprocess with process id `pid' to terminate and | |
378 | make sure it will get eliminated (not remain forever as a zombie) */ | |
379 | ||
380 | wait_for_termination (pid) | |
381 | int pid; | |
382 | { | |
383 | while (1) | |
384 | { | |
385 | #ifdef subprocesses | |
386 | #ifdef VMS | |
387 | int status; | |
388 | ||
986ffb24 | 389 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
390 | break; |
391 | #else /* not VMS */ | |
05695621 | 392 | #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
393 | /* Note that kill returns -1 even if the process is just a zombie now. |
394 | But inevitably a SIGCHLD interrupt should be generated | |
395 | and child_sig will do wait3 and make the process go away. */ | |
396 | /* There is some indication that there is a bug involved with | |
397 | termination of subprocesses, perhaps involving a kernel bug too, | |
398 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
399 | if that causes the problem to go away or get worse. */ | |
400 | sigsetmask (sigmask (SIGCHLD)); | |
401 | if (0 > kill (pid, 0)) | |
fe03522b | 402 | { |
4c8975ad RS |
403 | sigsetmask (SIGEMPTYMASK); |
404 | kill (getpid (), SIGCHLD); | |
405 | break; | |
406 | } | |
407 | if (wait_debugging) | |
408 | sleep (1); | |
409 | else | |
410 | sigpause (SIGEMPTYMASK); | |
05695621 RS |
411 | #else /* not BSD, and not HPUX version >= 6 */ |
412 | #if defined (UNIPLUS) | |
4c8975ad RS |
413 | if (0 > kill (pid, 0)) |
414 | break; | |
415 | wait (0); | |
05695621 | 416 | #else /* neither BSD nor UNIPLUS: random sysV */ |
fe03522b | 417 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
9ab714c7 RS |
418 | sigblock (sigmask (SIGCHLD)); |
419 | if (0 > kill (pid, 0)) | |
420 | { | |
421 | sigunblock (sigmask (SIGCHLD)); | |
422 | break; | |
423 | } | |
92c995de | 424 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 425 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
426 | #ifdef HAVE_SYSV_SIGPAUSE |
427 | sighold (SIGCHLD); | |
428 | if (0 > kill (pid, 0)) | |
429 | { | |
430 | sigrelse (SIGCHLD); | |
431 | break; | |
432 | } | |
433 | sigpause (SIGCHLD); | |
434 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
435 | #ifdef WINDOWSNT |
436 | wait (0); | |
437 | break; | |
438 | #else /* not WINDOWSNT */ | |
4c8975ad | 439 | if (0 > kill (pid, 0)) |
86a5659e | 440 | break; |
4c8975ad RS |
441 | /* Using sleep instead of pause avoids timing error. |
442 | If the inferior dies just before the sleep, | |
443 | we lose just one second. */ | |
444 | sleep (1); | |
fe03522b | 445 | #endif /* not WINDOWSNT */ |
4c8975ad | 446 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 447 | #endif /* not POSIX_SIGNALS */ |
4c8975ad RS |
448 | #endif /* not UNIPLUS */ |
449 | #endif /* not BSD, and not HPUX version >= 6 */ | |
86a5659e JB |
450 | #endif /* not VMS */ |
451 | #else /* not subprocesses */ | |
452 | #ifndef BSD4_1 | |
453 | if (kill (pid, 0) < 0) | |
454 | break; | |
455 | wait (0); | |
456 | #else /* BSD4_1 */ | |
457 | int status; | |
458 | status = wait (0); | |
459 | if (status == pid || status == -1) | |
460 | break; | |
461 | #endif /* BSD4_1 */ | |
462 | #endif /* not subprocesses */ | |
463 | } | |
464 | } | |
465 | ||
466 | #ifdef subprocesses | |
467 | ||
468 | /* | |
469 | * flush any pending output | |
470 | * (may flush input as well; it does not matter the way we use it) | |
471 | */ | |
472 | ||
473 | flush_pending_output (channel) | |
474 | int channel; | |
475 | { | |
476 | #ifdef HAVE_TERMIOS | |
477 | /* If we try this, we get hit with SIGTTIN, because | |
478 | the child's tty belongs to the child's pgrp. */ | |
479 | #else | |
480 | #ifdef TCFLSH | |
481 | ioctl (channel, TCFLSH, 1); | |
482 | #else | |
483 | #ifdef TIOCFLUSH | |
484 | int zero = 0; | |
485 | /* 3rd arg should be ignored | |
486 | but some 4.2 kernels actually want the address of an int | |
487 | and nonzero means something different. */ | |
488 | ioctl (channel, TIOCFLUSH, &zero); | |
489 | #endif | |
490 | #endif | |
491 | #endif | |
492 | } | |
64e971c3 | 493 | \f |
86a5659e JB |
494 | #ifndef VMS |
495 | /* Set up the terminal at the other end of a pseudo-terminal that | |
496 | we will be controlling an inferior through. | |
497 | It should not echo or do line-editing, since that is done | |
498 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
499 | ||
500 | child_setup_tty (out) | |
501 | int out; | |
502 | { | |
fe03522b | 503 | #ifndef DOS_NT |
91bac16a JB |
504 | struct emacs_tty s; |
505 | ||
506 | EMACS_GET_TTY (out, &s); | |
86a5659e | 507 | |
31be8d24 | 508 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
509 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
510 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 511 | #ifdef NLDLY |
91bac16a JB |
512 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
513 | /* No output delays */ | |
9d4e5eea | 514 | #endif |
91bac16a JB |
515 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
516 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
517 | #ifdef IUCLC |
518 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
519 | #endif | |
23e4c8be | 520 | #ifdef OLCUC |
9d4e5eea RS |
521 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
522 | #endif | |
1bf96fb5 | 523 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 524 | #if 0 |
eb8c3be9 | 525 | /* Said to be unnecessary: */ |
91bac16a JB |
526 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
527 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
528 | #endif | |
529 | ||
530 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
531 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
532 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
533 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 534 | |
86a5659e | 535 | #ifdef HPUX |
91bac16a | 536 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 537 | #endif /* HPUX */ |
91bac16a | 538 | |
86a5659e JB |
539 | #ifdef AIX |
540 | /* AIX enhanced edit loses NULs, so disable it */ | |
541 | #ifndef IBMR2AIX | |
91bac16a JB |
542 | s.main.c_line = 0; |
543 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
544 | #endif |
545 | /* Also, PTY overloads NUL and BREAK. | |
546 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
547 | s.main.c_iflag &= ~IGNBRK; |
548 | s.main.c_iflag &= ~BRKINT; | |
549 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 550 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
551 | #ifdef SIGNALS_VIA_CHARACTERS |
552 | /* the QUIT and INTR character are used in process_send_signal | |
553 | so set them here to something useful. */ | |
554 | if (s.main.c_cc[VQUIT] == 0377) | |
555 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
556 | if (s.main.c_cc[VINTR] == 0377) | |
557 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
558 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
559 | /* QUIT and INTR work better as signals, so disable character forms */ | |
560 | s.main.c_cc[VQUIT] = 0377; | |
561 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 562 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
563 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
564 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 565 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
566 | #endif /* AIX */ |
567 | ||
568 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
569 | |
570 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
571 | | CBREAK | TANDEM); | |
a00d5589 | 572 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
573 | s.main.sg_erase = 0377; |
574 | s.main.sg_kill = 0377; | |
1bf96fb5 | 575 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 576 | |
86a5659e JB |
577 | #endif /* not HAVE_TERMIO */ |
578 | ||
91bac16a | 579 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
580 | |
581 | #ifdef BSD4_1 | |
582 | if (interrupt_input) | |
583 | reset_sigio (); | |
584 | #endif /* BSD4_1 */ | |
585 | #ifdef RTU | |
586 | { | |
587 | int zero = 0; | |
588 | ioctl (out, FIOASYNC, &zero); | |
589 | } | |
590 | #endif /* RTU */ | |
fe03522b | 591 | #endif /* not DOS_NT */ |
86a5659e JB |
592 | } |
593 | #endif /* not VMS */ | |
594 | ||
595 | #endif /* subprocesses */ | |
64e971c3 | 596 | \f |
86a5659e JB |
597 | /* Record a signal code and the handler for it. */ |
598 | struct save_signal | |
599 | { | |
600 | int code; | |
601 | SIGTYPE (*handler) (); | |
602 | }; | |
603 | ||
604 | /* Suspend the Emacs process; give terminal to its superior. */ | |
605 | ||
606 | sys_suspend () | |
607 | { | |
608 | #ifdef VMS | |
88191e36 RS |
609 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
610 | to the current emacs as a cheaper than starting a whole new process. This | |
611 | is set up by KEPTEDITOR.COM. */ | |
612 | unsigned long parent_id, foster_parent_id; | |
613 | char *fpid_string; | |
614 | ||
615 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
616 | if (fpid_string != NULL) | |
617 | { | |
618 | sscanf (fpid_string, "%x", &foster_parent_id); | |
619 | if (foster_parent_id != 0) | |
620 | parent_id = foster_parent_id; | |
621 | else | |
622 | parent_id = getppid (); | |
623 | } | |
624 | else | |
625 | parent_id = getppid (); | |
626 | ||
9ac0d9e0 | 627 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 628 | |
86a5659e JB |
629 | if (parent_id && parent_id != 0xffffffff) |
630 | { | |
631 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
632 | int status = LIB$ATTACH (&parent_id) & 1; | |
633 | signal (SIGINT, oldsig); | |
634 | return status; | |
635 | } | |
636 | else | |
637 | { | |
638 | struct { | |
639 | int l; | |
640 | char *a; | |
641 | } d_prompt; | |
642 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
643 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 644 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
645 | return 1; |
646 | } | |
647 | return -1; | |
648 | #else | |
207bdbdb | 649 | #if defined(SIGTSTP) && !defined(MSDOS) |
86a5659e | 650 | |
5a570e37 | 651 | { |
e89a2cd5 | 652 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
653 | EMACS_KILLPG (pgrp, SIGTSTP); |
654 | } | |
86a5659e JB |
655 | |
656 | #else /* No SIGTSTP */ | |
657 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
658 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
659 | kill (getpid (), SIGQUIT); | |
660 | ||
661 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
662 | ||
663 | /* On a system where suspending is not implemented, | |
664 | instead fork a subshell and let it talk directly to the terminal | |
665 | while we wait. */ | |
a0932daa KH |
666 | sys_subshell (); |
667 | ||
668 | #endif /* no USG_JOBCTRL */ | |
669 | #endif /* no SIGTSTP */ | |
670 | #endif /* not VMS */ | |
671 | } | |
672 | ||
673 | /* Fork a subshell. */ | |
674 | ||
675 | sys_subshell () | |
676 | { | |
677 | #ifndef VMS | |
678 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ | |
679 | int st; | |
680 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
681 | #endif | |
efa04277 | 682 | int pid; |
86a5659e | 683 | struct save_signal saved_handlers[5]; |
efa04277 RS |
684 | Lisp_Object dir; |
685 | unsigned char *str = 0; | |
686 | int len; | |
86a5659e JB |
687 | |
688 | saved_handlers[0].code = SIGINT; | |
689 | saved_handlers[1].code = SIGQUIT; | |
690 | saved_handlers[2].code = SIGTERM; | |
691 | #ifdef SIGIO | |
692 | saved_handlers[3].code = SIGIO; | |
693 | saved_handlers[4].code = 0; | |
694 | #else | |
695 | saved_handlers[3].code = 0; | |
696 | #endif | |
697 | ||
efa04277 RS |
698 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
699 | which somehow wedges the hp compiler. So instead... */ | |
700 | ||
701 | dir = intern ("default-directory"); | |
0e7e7a58 | 702 | if (NILP (Fboundp (dir))) |
efa04277 RS |
703 | goto xyzzy; |
704 | dir = Fsymbol_value (dir); | |
914e81a2 | 705 | if (!STRINGP (dir)) |
efa04277 RS |
706 | goto xyzzy; |
707 | ||
708 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
709 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
710 | len = XSTRING (dir)->size; | |
711 | bcopy (XSTRING (dir)->data, str, len); | |
712 | if (str[len - 1] != '/') str[len++] = '/'; | |
713 | str[len] = 0; | |
714 | xyzzy: | |
715 | ||
fe03522b RS |
716 | #ifdef WINDOWSNT |
717 | pid = -1; | |
718 | #else /* not WINDOWSNT */ | |
efa04277 RS |
719 | pid = vfork (); |
720 | ||
86a5659e JB |
721 | if (pid == -1) |
722 | error ("Can't spawn subshell"); | |
723 | if (pid == 0) | |
fe03522b | 724 | #endif /* not WINDOWSNT */ |
86a5659e JB |
725 | { |
726 | char *sh; | |
727 | ||
fe03522b | 728 | #ifdef MSDOS /* MW, Aug 1993 */ |
207bdbdb RS |
729 | getwd (oldwd); |
730 | #endif | |
86a5659e JB |
731 | sh = (char *) egetenv ("SHELL"); |
732 | if (sh == 0) | |
733 | sh = "sh"; | |
207bdbdb | 734 | |
86a5659e | 735 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 736 | if (str) |
86a5659e | 737 | chdir (str); |
efa04277 | 738 | |
86a5659e JB |
739 | #ifdef subprocesses |
740 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
741 | #endif | |
1593c2fe | 742 | |
6f8b4d01 | 743 | #ifdef SET_EMACS_PRIORITY |
1593c2fe JB |
744 | { |
745 | extern int emacs_priority; | |
746 | ||
6f8b4d01 | 747 | if (emacs_priority < 0) |
1593c2fe JB |
748 | nice (-emacs_priority); |
749 | } | |
750 | #endif | |
751 | ||
fe03522b | 752 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
207bdbdb RS |
753 | st = system (sh); |
754 | chdir (oldwd); | |
755 | if (st) | |
fe03522b | 756 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); |
207bdbdb | 757 | #else /* not MSDOS */ |
fe03522b | 758 | #ifdef WINDOWSNT |
fe03522b RS |
759 | /* Waits for process completion */ |
760 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
761 | if (pid == -1) | |
762 | write (1, "Can't execute subshell", 22); | |
763 | ||
764 | take_console (); | |
765 | #else /* not WINDOWSNT */ | |
86a5659e JB |
766 | execlp (sh, sh, 0); |
767 | write (1, "Can't execute subshell", 22); | |
768 | _exit (1); | |
fe03522b | 769 | #endif /* not WINDOWSNT */ |
207bdbdb | 770 | #endif /* not MSDOS */ |
86a5659e JB |
771 | } |
772 | ||
773 | save_signal_handlers (saved_handlers); | |
ffafc793 | 774 | synch_process_alive = 1; |
86a5659e JB |
775 | wait_for_termination (pid); |
776 | restore_signal_handlers (saved_handlers); | |
a0932daa | 777 | #endif /* !VMS */ |
86a5659e JB |
778 | } |
779 | ||
780 | save_signal_handlers (saved_handlers) | |
781 | struct save_signal *saved_handlers; | |
782 | { | |
783 | while (saved_handlers->code) | |
784 | { | |
508b171c JA |
785 | saved_handlers->handler |
786 | = (SIGTYPE (*) ()) signal (saved_handlers->code, SIG_IGN); | |
86a5659e JB |
787 | saved_handlers++; |
788 | } | |
789 | } | |
790 | ||
791 | restore_signal_handlers (saved_handlers) | |
792 | struct save_signal *saved_handlers; | |
793 | { | |
794 | while (saved_handlers->code) | |
795 | { | |
796 | signal (saved_handlers->code, saved_handlers->handler); | |
797 | saved_handlers++; | |
798 | } | |
799 | } | |
800 | \f | |
801 | #ifdef F_SETFL | |
802 | ||
803 | int old_fcntl_flags; | |
804 | ||
23dab951 RS |
805 | init_sigio (fd) |
806 | int fd; | |
86a5659e JB |
807 | { |
808 | #ifdef FASYNC | |
23dab951 RS |
809 | old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
810 | fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); | |
86a5659e | 811 | #endif |
23dab951 | 812 | interrupts_deferred = 0; |
86a5659e JB |
813 | } |
814 | ||
815 | reset_sigio () | |
816 | { | |
817 | unrequest_sigio (); | |
818 | } | |
819 | ||
eb8c3be9 | 820 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e JB |
821 | |
822 | request_sigio () | |
823 | { | |
23dab951 RS |
824 | if (read_socket_hook) |
825 | return; | |
826 | ||
86a5659e | 827 | #ifdef SIGWINCH |
e065a56e | 828 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 829 | #endif |
64e971c3 | 830 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
831 | |
832 | interrupts_deferred = 0; | |
833 | } | |
834 | ||
835 | unrequest_sigio () | |
836 | { | |
23dab951 RS |
837 | if (read_socket_hook) |
838 | return; | |
839 | ||
86a5659e | 840 | #ifdef SIGWINCH |
e065a56e | 841 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 842 | #endif |
64e971c3 | 843 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
844 | interrupts_deferred = 1; |
845 | } | |
846 | ||
847 | #else /* no FASYNC */ | |
848 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
849 | ||
850 | request_sigio () | |
851 | { | |
852 | int on = 1; | |
23dab951 RS |
853 | |
854 | if (read_socket_hook) | |
855 | return; | |
856 | ||
64e971c3 | 857 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
858 | interrupts_deferred = 0; |
859 | } | |
860 | ||
861 | unrequest_sigio () | |
862 | { | |
863 | int off = 0; | |
864 | ||
23dab951 RS |
865 | if (read_socket_hook) |
866 | return; | |
867 | ||
64e971c3 | 868 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
869 | interrupts_deferred = 1; |
870 | } | |
871 | ||
872 | #else /* not FASYNC, not STRIDE */ | |
873 | ||
25ab68af RS |
874 | #ifdef _CX_UX |
875 | ||
876 | #include <termios.h> | |
877 | ||
878 | request_sigio () | |
879 | { | |
880 | int on = 1; | |
881 | sigset_t st; | |
882 | ||
23dab951 RS |
883 | if (read_socket_hook) |
884 | return; | |
885 | ||
25ab68af RS |
886 | sigemptyset(&st); |
887 | sigaddset(&st, SIGIO); | |
888 | ioctl (input_fd, FIOASYNC, &on); | |
889 | interrupts_deferred = 0; | |
890 | sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0); | |
891 | } | |
892 | ||
893 | unrequest_sigio () | |
894 | { | |
895 | int off = 0; | |
896 | ||
23dab951 RS |
897 | if (read_socket_hook) |
898 | return; | |
899 | ||
25ab68af RS |
900 | ioctl (input_fd, FIOASYNC, &off); |
901 | interrupts_deferred = 1; | |
902 | } | |
903 | ||
904 | #else /* ! _CX_UX */ | |
905 | ||
86a5659e JB |
906 | request_sigio () |
907 | { | |
23dab951 RS |
908 | if (read_socket_hook) |
909 | return; | |
910 | ||
86a5659e JB |
911 | croak ("request_sigio"); |
912 | } | |
913 | ||
914 | unrequest_sigio () | |
915 | { | |
23dab951 RS |
916 | if (read_socket_hook) |
917 | return; | |
918 | ||
86a5659e JB |
919 | croak ("unrequest_sigio"); |
920 | } | |
921 | ||
25ab68af | 922 | #endif /* _CX_UX */ |
86a5659e JB |
923 | #endif /* STRIDE */ |
924 | #endif /* FASYNC */ | |
925 | #endif /* F_SETFL */ | |
926 | \f | |
9ae8f997 JB |
927 | /* Saving and restoring the process group of Emacs's terminal. */ |
928 | ||
0ba73609 | 929 | #ifdef BSD_PGRPS |
9ae8f997 JB |
930 | |
931 | /* The process group of which Emacs was a member when it initially | |
932 | started. | |
933 | ||
934 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
935 | getpid ()), then we know we're running under a shell with job | |
936 | control (Emacs would never be run as part of a pipeline). | |
937 | Everything is fine. | |
938 | ||
939 | If Emacs was not in its own process group, then we know we're | |
940 | running under a shell (or a caller) that doesn't know how to | |
941 | separate itself from Emacs (like sh). Emacs must be in its own | |
942 | process group in order to receive SIGIO correctly. In this | |
943 | situation, we put ourselves in our own pgroup, forcibly set the | |
944 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
945 | the tty's pgroup just like any other terminal setting. If | |
946 | inherited_group was not the tty's pgroup, then we'll get a | |
947 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
948 | it goes foreground in the future, which is what should happen. */ | |
949 | int inherited_pgroup; | |
950 | ||
951 | /* Split off the foreground process group to Emacs alone. | |
952 | When we are in the foreground, but not started in our own process | |
953 | group, redirect the TTY to point to our own process group. We need | |
954 | to be in our own process group to receive SIGIO properly. */ | |
955 | narrow_foreground_group () | |
956 | { | |
957 | int me = getpid (); | |
958 | ||
959 | setpgrp (0, inherited_pgroup); | |
960 | if (inherited_pgroup != me) | |
64e971c3 | 961 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
962 | setpgrp (0, me); |
963 | } | |
964 | ||
965 | /* Set the tty to our original foreground group. */ | |
966 | widen_foreground_group () | |
967 | { | |
968 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 969 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
970 | setpgrp (0, inherited_pgroup); |
971 | } | |
972 | ||
0ba73609 | 973 | #endif /* BSD_PGRPS */ |
9ae8f997 | 974 | \f |
68936329 JB |
975 | /* Getting and setting emacs_tty structures. */ |
976 | ||
977 | /* Set *TC to the parameters associated with the terminal FD. | |
978 | Return zero if all's well, or -1 if we ran into an error we | |
979 | couldn't deal with. */ | |
980 | int | |
981 | emacs_get_tty (fd, settings) | |
982 | int fd; | |
983 | struct emacs_tty *settings; | |
984 | { | |
985 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
986 | #ifdef HAVE_TCATTR | |
987 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
988 | if (tcgetattr (fd, &settings->main) < 0) | |
989 | return -1; | |
990 | ||
991 | #else | |
992 | #ifdef HAVE_TERMIO | |
993 | /* The SYSV-style interface? */ | |
994 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
995 | return -1; | |
996 | ||
997 | #else | |
998 | #ifdef VMS | |
999 | /* Vehemently Monstrous System? :-) */ | |
1000 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
1001 | &settings->main.class, 12, 0, 0, 0, 0) | |
1002 | & 1)) | |
1003 | return -1; | |
1004 | ||
1005 | #else | |
fe03522b | 1006 | #ifndef DOS_NT |
68936329 JB |
1007 | /* I give up - I hope you have the BSD ioctls. */ |
1008 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
1009 | return -1; | |
fe03522b | 1010 | #endif /* not DOS_NT */ |
68936329 JB |
1011 | #endif |
1012 | #endif | |
1013 | #endif | |
1014 | ||
1015 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1016 | #ifdef HAVE_LTCHARS |
68936329 JB |
1017 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
1018 | return -1; | |
1019 | #endif | |
1020 | ||
1021 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1022 | #ifdef HAVE_TCHARS |
68936329 JB |
1023 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
1024 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1025 | return -1; | |
1026 | #endif | |
1027 | ||
1028 | /* We have survived the tempest. */ | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | ||
1033 | /* Set the parameters of the tty on FD according to the contents of | |
1034 | *SETTINGS. If WAITP is non-zero, we wait for all queued output to | |
1035 | be written before making the change; otherwise, we forget any | |
1036 | queued input and make the change immediately. | |
1037 | Return 0 if all went well, and -1 if anything failed. */ | |
1038 | int | |
1039 | emacs_set_tty (fd, settings, waitp) | |
1040 | int fd; | |
1041 | struct emacs_tty *settings; | |
1042 | int waitp; | |
1043 | { | |
1044 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1045 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1046 | int i; |
68936329 JB |
1047 | /* We have those nifty POSIX tcmumbleattr functions. |
1048 | William J. Smith <wjs@wiis.wang.com> writes: | |
1049 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
1050 | able to perform any of the requested actions, even if some | |
1051 | of the requested actions could not be performed. | |
1052 | We must read settings back to ensure tty setup properly. | |
1053 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1054 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1055 | for (i = 0 ; i < 10 ; i++) |
68936329 JB |
1056 | if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
1057 | { | |
1058 | if (errno == EINTR) | |
1059 | continue; | |
1060 | else | |
1061 | return -1; | |
1062 | } | |
1063 | else | |
1064 | { | |
1065 | struct termios new; | |
1066 | ||
1067 | /* Get the current settings, and see if they're what we asked for. */ | |
1068 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1069 | /* We cannot use memcmp on the whole structure here because under |
1070 | * aix386 the termios structure has some reserved field that may | |
1071 | * not be filled in. | |
1072 | */ | |
1073 | if ( new.c_iflag == settings->main.c_iflag | |
1074 | && new.c_oflag == settings->main.c_oflag | |
1075 | && new.c_cflag == settings->main.c_cflag | |
1076 | && new.c_lflag == settings->main.c_lflag | |
1077 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 1078 | break; |
e6cc3307 RS |
1079 | else |
1080 | continue; | |
68936329 JB |
1081 | } |
1082 | ||
1083 | #else | |
1084 | #ifdef HAVE_TERMIO | |
1085 | /* The SYSV-style interface? */ | |
1086 | if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0) | |
1087 | return -1; | |
1088 | ||
1089 | #else | |
1090 | #ifdef VMS | |
1091 | /* Vehemently Monstrous System? :-) */ | |
1092 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1093 | &settings->main.class, 12, 0, 0, 0, 0) | |
1094 | & 1)) | |
1095 | return -1; | |
1096 | ||
1097 | #else | |
fe03522b | 1098 | #ifndef DOS_NT |
68936329 JB |
1099 | /* I give up - I hope you have the BSD ioctls. */ |
1100 | if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
1101 | return -1; | |
fe03522b | 1102 | #endif /* not DOS_NT */ |
68936329 JB |
1103 | |
1104 | #endif | |
1105 | #endif | |
1106 | #endif | |
1107 | ||
1108 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1109 | #ifdef HAVE_LTCHARS |
68936329 JB |
1110 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1111 | return -1; | |
1112 | #endif | |
1113 | ||
1114 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1115 | #ifdef HAVE_TCHARS |
68936329 JB |
1116 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1117 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1118 | return -1; | |
1119 | #endif | |
1120 | ||
1121 | /* We have survived the tempest. */ | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | \f | |
91bac16a JB |
1126 | /* The initial tty mode bits */ |
1127 | struct emacs_tty old_tty; | |
86a5659e JB |
1128 | |
1129 | int term_initted; /* 1 if outer tty status has been recorded */ | |
1130 | ||
91bac16a JB |
1131 | #ifdef BSD4_1 |
1132 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1133 | sigio. */ | |
1134 | int lmode; | |
1135 | #endif | |
1136 | ||
46f2fdac | 1137 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1138 | #ifdef F_SETOWN |
1139 | int old_fcntl_owner; | |
1140 | #endif /* F_SETOWN */ | |
46f2fdac | 1141 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1142 | |
86a5659e JB |
1143 | /* This may also be defined in stdio, |
1144 | but if so, this does no harm, | |
1145 | and using the same name avoids wasting the other one's space. */ | |
1146 | ||
1147 | #if defined (USG) || defined (DGUX) | |
1148 | unsigned char _sobuf[BUFSIZ+8]; | |
1149 | #else | |
1150 | char _sobuf[BUFSIZ]; | |
1151 | #endif | |
1152 | ||
50b8cf60 | 1153 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1154 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1155 | #endif | |
50b8cf60 | 1156 | #ifdef HAVE_TCHARS |
86a5659e JB |
1157 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
1158 | #endif | |
1159 | ||
1160 | init_sys_modes () | |
1161 | { | |
91bac16a JB |
1162 | struct emacs_tty tty; |
1163 | ||
86a5659e JB |
1164 | #ifdef VMS |
1165 | #if 0 | |
1166 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1167 | extern int (*interrupt_signal) (); | |
1168 | #endif | |
1169 | #endif | |
1170 | ||
1171 | if (noninteractive) | |
1172 | return; | |
1173 | ||
1174 | #ifdef VMS | |
1175 | if (!input_ef) | |
1176 | input_ef = get_kbd_event_flag (); | |
1177 | /* LIB$GET_EF (&input_ef); */ | |
1178 | SYS$CLREF (input_ef); | |
1179 | waiting_for_ast = 0; | |
1180 | if (!timer_ef) | |
1181 | timer_ef = get_timer_event_flag (); | |
1182 | /* LIB$GET_EF (&timer_ef); */ | |
1183 | SYS$CLREF (timer_ef); | |
210b2b4f | 1184 | #if 0 |
86a5659e JB |
1185 | if (!process_ef) |
1186 | { | |
1187 | LIB$GET_EF (&process_ef); | |
1188 | SYS$CLREF (process_ef); | |
1189 | } | |
1190 | if (input_ef / 32 != process_ef / 32) | |
1191 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1192 | #endif |
86a5659e | 1193 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1194 | croak ("Input and timer event flags in different clusters."); |
1195 | #if 0 | |
86a5659e JB |
1196 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1197 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1198 | #endif |
86a5659e JB |
1199 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1200 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1201 | #ifndef VMS4_4 |
1202 | sys_access_reinit (); | |
1203 | #endif | |
86a5659e | 1204 | #endif /* not VMS */ |
91bac16a | 1205 | |
0ba73609 | 1206 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1207 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1208 | narrow_foreground_group (); | |
1209 | #endif | |
1210 | ||
87485d6f MW |
1211 | #ifdef HAVE_X_WINDOWS |
1212 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore | |
1213 | needs the initialization code below. */ | |
86a5659e | 1214 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
87485d6f | 1215 | #endif |
86a5659e | 1216 | { |
23dab951 RS |
1217 | EMACS_GET_TTY (input_fd, &old_tty); |
1218 | ||
91bac16a | 1219 | tty = old_tty; |
86a5659e | 1220 | |
31be8d24 | 1221 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
421dd92f RS |
1222 | #ifdef DGUX |
1223 | /* This allows meta to be sent on 8th bit. */ | |
1224 | tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ | |
1225 | #endif | |
91bac16a JB |
1226 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1227 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
86a5659e | 1228 | #ifdef ISTRIP |
91bac16a | 1229 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1230 | #endif |
91bac16a JB |
1231 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1232 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1233 | #ifdef IEXTEN |
b26bc18b | 1234 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1235 | #endif |
91bac16a | 1236 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1237 | if (flow_control) |
1238 | { | |
91bac16a | 1239 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1240 | #ifdef IXANY |
91bac16a | 1241 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1242 | #endif /* IXANY */ |
1243 | } | |
1244 | else | |
91bac16a JB |
1245 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1246 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1247 | on output */ | |
1248 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1249 | #ifdef CS8 |
1250 | if (meta_key) | |
1251 | { | |
91bac16a JB |
1252 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1253 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1254 | } |
1255 | #endif | |
91bac16a | 1256 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1257 | /* Set up C-g for both SIGQUIT and SIGINT. |
1258 | We don't know which we will get, but we handle both alike | |
1259 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1260 | tty.main.c_cc[VQUIT] = quit_char; |
1261 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1262 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1263 | #ifdef VSWTCH |
e2b40c23 | 1264 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1265 | of C-z */ |
86a5659e JB |
1266 | #endif /* VSWTCH */ |
1267 | #if defined (mips) || defined (HAVE_TCATTR) | |
86a5659e | 1268 | #ifdef VSUSP |
e2b40c23 | 1269 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1270 | #endif /* VSUSP */ |
1271 | #ifdef V_DSUSP | |
e2b40c23 | 1272 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1273 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1274 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1275 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1276 | #endif /* VDSUSP */ | |
92c995de RS |
1277 | #ifdef VLNEXT |
1278 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1279 | #endif /* VLNEXT */ | |
1280 | #ifdef VREPRINT | |
1281 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1282 | #endif /* VREPRINT */ | |
1283 | #ifdef VWERASE | |
1284 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1285 | #endif /* VWERASE */ | |
1286 | #ifdef VDISCARD | |
1287 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1288 | #endif /* VDISCARD */ | |
421dd92f RS |
1289 | #ifdef VSTART |
1290 | tty.main.c_cc[VSTART] = CDISABLE; | |
1291 | #endif /* VSTART */ | |
1292 | #ifdef VSTOP | |
1293 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1294 | #endif /* VSTOP */ | |
86a5659e | 1295 | #endif /* mips or HAVE_TCATTR */ |
441f6399 RS |
1296 | #ifdef SET_LINE_DISCIPLINE |
1297 | /* Need to explicitely request TERMIODISC line discipline or | |
1298 | Ultrix's termios does not work correctly. */ | |
1299 | tty.main.c_line = SET_LINE_DISCIPLINE; | |
1300 | #endif | |
86a5659e JB |
1301 | #ifdef AIX |
1302 | #ifndef IBMR2AIX | |
441f6399 | 1303 | /* AIX enhanced edit loses NULs, so disable it. */ |
91bac16a JB |
1304 | tty.main.c_line = 0; |
1305 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1306 | #else |
91bac16a JB |
1307 | tty.main.c_cc[VSTRT] = 255; |
1308 | tty.main.c_cc[VSTOP] = 255; | |
1309 | tty.main.c_cc[VSUSP] = 255; | |
1310 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e JB |
1311 | #endif /* IBMR2AIX */ |
1312 | /* Also, PTY overloads NUL and BREAK. | |
1313 | don't ignore break, but don't signal either, so it looks like NUL. | |
1314 | This really serves a purpose only if running in an XTERM window | |
1315 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1316 | tty.main.c_iflag &= ~IGNBRK; |
1317 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1318 | #endif |
1319 | #else /* if not HAVE_TERMIO */ | |
1320 | #ifdef VMS | |
91bac16a | 1321 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1322 | if (meta_key) |
986ffb24 | 1323 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1324 | if (flow_control) |
91bac16a | 1325 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1326 | else |
91bac16a JB |
1327 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1328 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1329 | #else /* not VMS (BSD, that is) */ |
fe03522b | 1330 | #ifndef DOS_NT |
91bac16a | 1331 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1332 | if (meta_key) |
91bac16a JB |
1333 | tty.main.sg_flags |= ANYP; |
1334 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1335 | #endif /* not DOS_NT */ |
86a5659e JB |
1336 | #endif /* not VMS (BSD, that is) */ |
1337 | #endif /* not HAVE_TERMIO */ | |
1338 | ||
91bac16a JB |
1339 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1340 | and turn off start and stop chars, etc. If not going to use | |
1341 | CBREAK mode, do this anyway so as to turn off local flow | |
1342 | control for user coming over network on 4.2; in this case, | |
1343 | only t_stopc and t_startc really matter. */ | |
1344 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1345 | #ifdef HAVE_TCHARS |
91bac16a JB |
1346 | /* Note: if not using CBREAK mode, it makes no difference how we |
1347 | set this */ | |
1348 | tty.tchars = new_tchars; | |
1349 | tty.tchars.t_intrc = quit_char; | |
1350 | if (flow_control) | |
1351 | { | |
1352 | tty.tchars.t_startc = '\021'; | |
1353 | tty.tchars.t_stopc = '\023'; | |
1354 | } | |
1355 | ||
91bac16a | 1356 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1357 | #ifdef ultrix |
1358 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1359 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1360 | tty.lmode &= ~LLITOUT; | |
1361 | #endif | |
91bac16a JB |
1362 | |
1363 | #ifdef BSD4_1 | |
1364 | lmode = tty.lmode; | |
1365 | #endif | |
1366 | ||
50b8cf60 | 1367 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1368 | #endif /* not HAVE_TERMIO */ |
1369 | ||
50b8cf60 | 1370 | #ifdef HAVE_LTCHARS |
91bac16a | 1371 | tty.ltchars = new_ltchars; |
50b8cf60 | 1372 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1373 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
87485d6f MW |
1374 | if (!term_initted) |
1375 | internal_terminal_init (); | |
207bdbdb RS |
1376 | dos_ttraw (); |
1377 | #endif | |
91bac16a JB |
1378 | |
1379 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1380 | |
1381 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1382 | we have an unlocked terminal at the start. */ |
91bac16a | 1383 | |
86a5659e | 1384 | #ifdef TCXONC |
64e971c3 | 1385 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1386 | #endif |
1387 | #ifndef APOLLO | |
1388 | #ifdef TIOCSTART | |
64e971c3 | 1389 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1390 | #endif |
1391 | #endif | |
1392 | ||
d228f207 | 1393 | #if defined (HAVE_TERMIOS) || defined (HPUX9) |
51417996 | 1394 | #ifdef TCOON |
d228f207 RS |
1395 | if (!flow_control) tcflow (input_fd, TCOON); |
1396 | #endif | |
51417996 | 1397 | #endif |
d228f207 | 1398 | |
b97ab886 | 1399 | #ifdef AIXHFT |
86a5659e JB |
1400 | hft_init (); |
1401 | #ifdef IBMR2AIX | |
1402 | { | |
1403 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1404 | to be only LF. This is the way that is done. */ | |
1405 | struct termio tty; | |
1406 | ||
1407 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1408 | write (1, "\033[20l", 5); | |
1409 | } | |
1410 | #endif | |
b97ab886 | 1411 | #endif /* AIXHFT */ |
86a5659e | 1412 | |
86a5659e JB |
1413 | #ifdef VMS |
1414 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1415 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1416 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1417 | */ | |
1418 | queue_kbd_input (0); | |
1419 | #endif /* VMS */ | |
1420 | } | |
1421 | ||
1422 | #ifdef F_SETFL | |
46f2fdac | 1423 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1424 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
d6a9be45 RS |
1425 | if (interrupt_input |
1426 | && ! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
86a5659e | 1427 | { |
64e971c3 RS |
1428 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1429 | fcntl (input_fd, F_SETOWN, getpid ()); | |
23dab951 | 1430 | init_sigio (input_fd); |
86a5659e JB |
1431 | } |
1432 | #endif /* F_GETOWN */ | |
46f2fdac | 1433 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1434 | #endif /* F_SETFL */ |
1435 | ||
1436 | #ifdef BSD4_1 | |
1437 | if (interrupt_input) | |
23dab951 | 1438 | init_sigio (input_fd); |
86a5659e JB |
1439 | #endif |
1440 | ||
1441 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1442 | #undef _IOFBF | |
1443 | #endif | |
1444 | #ifdef _IOFBF | |
1445 | /* This symbol is defined on recent USG systems. | |
1446 | Someone says without this call USG won't really buffer the file | |
1447 | even with a call to setbuf. */ | |
1448 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1449 | #else | |
1450 | setbuf (stdout, _sobuf); | |
1451 | #endif | |
4b311aaf RS |
1452 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1453 | set_terminal_modes (); | |
1454 | ||
86a5659e JB |
1455 | if (term_initted && no_redraw_on_reenter) |
1456 | { | |
1457 | if (display_completed) | |
1458 | direct_output_forward_char (0); | |
1459 | } | |
1460 | else | |
1461 | { | |
0137dbf7 JB |
1462 | frame_garbaged = 1; |
1463 | #ifdef MULTI_FRAME | |
1464 | if (FRAMEP (Vterminal_frame)) | |
1465 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e JB |
1466 | #endif |
1467 | } | |
91bac16a | 1468 | |
86a5659e JB |
1469 | term_initted = 1; |
1470 | } | |
1471 | ||
1472 | /* Return nonzero if safe to use tabs in output. | |
1473 | At the time this is called, init_sys_modes has not been done yet. */ | |
1474 | ||
1475 | tabs_safe_p () | |
1476 | { | |
91bac16a JB |
1477 | struct emacs_tty tty; |
1478 | ||
1479 | EMACS_GET_TTY (input_fd, &tty); | |
1480 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1481 | } |
73d5358f | 1482 | \f |
86a5659e | 1483 | /* Get terminal size from system. |
73d5358f RS |
1484 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1485 | We store 0 if there's no valid information. */ | |
86a5659e | 1486 | |
0137dbf7 | 1487 | get_frame_size (widthp, heightp) |
86a5659e JB |
1488 | int *widthp, *heightp; |
1489 | { | |
86a5659e | 1490 | |
86a5659e | 1491 | #ifdef TIOCGWINSZ |
91bac16a JB |
1492 | |
1493 | /* BSD-style. */ | |
86a5659e | 1494 | struct winsize size; |
91bac16a JB |
1495 | |
1496 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1497 | *widthp = *heightp = 0; | |
1498 | else | |
1499 | { | |
1500 | *widthp = size.ws_col; | |
1501 | *heightp = size.ws_row; | |
1502 | } | |
1503 | ||
1504 | #else | |
1505 | #ifdef TIOCGSIZE | |
1506 | ||
1507 | /* SunOS - style. */ | |
1508 | struct ttysize size; | |
1509 | ||
1510 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1511 | *widthp = *heightp = 0; | |
1512 | else | |
1513 | { | |
1514 | *widthp = size.ts_cols; | |
1515 | *heightp = size.ts_lines; | |
1516 | } | |
1517 | ||
1518 | #else | |
86a5659e | 1519 | #ifdef VMS |
91bac16a JB |
1520 | |
1521 | struct sensemode tty; | |
1522 | ||
1523 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1524 | &tty.class, 12, 0, 0, 0, 0); |
1525 | *widthp = tty.scr_wid; | |
1526 | *heightp = tty.scr_len; | |
91bac16a | 1527 | |
207bdbdb RS |
1528 | #else |
1529 | #ifdef MSDOS | |
1530 | *widthp = ScreenCols (); | |
1531 | *heightp = ScreenRows (); | |
86a5659e JB |
1532 | #else /* system doesn't know size */ |
1533 | *widthp = 0; | |
1534 | *heightp = 0; | |
207bdbdb | 1535 | #endif |
91bac16a JB |
1536 | |
1537 | #endif /* not VMS */ | |
1538 | #endif /* not SunOS-style */ | |
1539 | #endif /* not BSD-style */ | |
86a5659e | 1540 | } |
91bac16a | 1541 | |
73d5358f RS |
1542 | /* Set the logical window size associated with descriptor FD |
1543 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1544 | ||
1545 | int | |
1546 | set_window_size (fd, height, width) | |
1547 | int fd, height, width; | |
1548 | { | |
1549 | #ifdef TIOCSWINSZ | |
1550 | ||
1551 | /* BSD-style. */ | |
1552 | struct winsize size; | |
1553 | size.ws_row = height; | |
1554 | size.ws_col = width; | |
1555 | ||
1556 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1557 | return 0; /* error */ | |
1558 | else | |
1559 | return 1; | |
1560 | ||
1561 | #else | |
1562 | #ifdef TIOCSSIZE | |
1563 | ||
1564 | /* SunOS - style. */ | |
1565 | struct ttysize size; | |
1566 | size.ts_lines = height; | |
1567 | size.ts_cols = width; | |
1568 | ||
1569 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1570 | return 0; | |
1571 | else | |
1572 | return 1; | |
1573 | #else | |
1574 | return -1; | |
1575 | #endif /* not SunOS-style */ | |
1576 | #endif /* not BSD-style */ | |
1577 | } | |
1578 | ||
86a5659e | 1579 | \f |
91bac16a | 1580 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1581 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
86a5659e JB |
1582 | reset_sys_modes () |
1583 | { | |
1584 | if (noninteractive) | |
1585 | { | |
1586 | fflush (stdout); | |
1587 | return; | |
1588 | } | |
1589 | if (!term_initted) | |
1590 | return; | |
87485d6f MW |
1591 | #ifdef HAVE_X_WINDOWS |
1592 | /* Emacs' window system on MSDOG uses the `internal terminal' and therefore | |
1593 | needs the clean-up code below. */ | |
86a5659e JB |
1594 | if (read_socket_hook || !EQ (Vwindow_system, Qnil)) |
1595 | return; | |
87485d6f | 1596 | #endif |
0137dbf7 | 1597 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
87485d6f MW |
1598 | #ifdef MSDOS |
1599 | if (!EQ (Vwindow_system, Qnil)) | |
1600 | { | |
1601 | /* Change to grey on white. */ | |
1602 | putchar ('\e'); | |
1603 | putchar ('A'); | |
1604 | putchar (7); | |
1605 | } | |
1606 | #endif | |
0137dbf7 | 1607 | clear_end_of_line (FRAME_WIDTH (selected_frame)); |
86a5659e | 1608 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1609 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
b97ab886 | 1610 | #if defined (IBMR2AIX) && defined (AIXHFT) |
86a5659e JB |
1611 | { |
1612 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1613 | do the LF only. Now, we need to reset it. */ | |
1614 | struct termio tty; | |
1615 | ||
1616 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1617 | write (1, "\033[20h", 5); | |
1618 | } | |
1619 | #endif | |
1620 | ||
1621 | reset_terminal_modes (); | |
1622 | fflush (stdout); | |
1623 | #ifdef BSD | |
1624 | #ifndef BSD4_1 | |
1625 | /* Avoid possible loss of output when changing terminal modes. */ | |
1626 | fsync (fileno (stdout)); | |
1627 | #endif | |
1628 | #endif | |
91bac16a | 1629 | |
86a5659e | 1630 | #ifdef F_SETFL |
46f2fdac | 1631 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1632 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1633 | if (interrupt_input) |
1634 | { | |
1635 | reset_sigio (); | |
64e971c3 | 1636 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1637 | } |
1638 | #endif /* F_SETOWN */ | |
46f2fdac | 1639 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1640 | #ifdef O_NDELAY |
1641 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1642 | #endif | |
86a5659e JB |
1643 | #endif /* F_SETFL */ |
1644 | #ifdef BSD4_1 | |
1645 | if (interrupt_input) | |
1646 | reset_sigio (); | |
1647 | #endif /* BSD4_1 */ | |
91bac16a | 1648 | |
1334b321 | 1649 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) |
91bac16a | 1650 | ; |
86a5659e | 1651 | |
207bdbdb RS |
1652 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1653 | dos_ttcooked (); | |
1654 | #endif | |
1655 | ||
441f6399 RS |
1656 | #ifdef SET_LINE_DISCIPLINE |
1657 | /* Ultrix's termios *ignores* any line discipline except TERMIODISC. | |
1658 | A different old line discipline is therefore not restored, yet. | |
1659 | Restore the old line discipline by hand. */ | |
1660 | ioctl (0, TIOCSETD, &old_tty.main.c_line); | |
1661 | #endif | |
1662 | ||
b97ab886 | 1663 | #ifdef AIXHFT |
86a5659e JB |
1664 | hft_reset (); |
1665 | #endif | |
9ae8f997 | 1666 | |
0ba73609 | 1667 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1668 | widen_foreground_group (); |
1669 | #endif | |
86a5659e JB |
1670 | } |
1671 | \f | |
1672 | #ifdef HAVE_PTYS | |
1673 | ||
1674 | /* Set up the proper status flags for use of a pty. */ | |
1675 | ||
1676 | setup_pty (fd) | |
1677 | int fd; | |
1678 | { | |
1679 | /* I'm told that TOICREMOTE does not mean control chars | |
1680 | "can't be sent" but rather that they don't have | |
1681 | input-editing or signaling effects. | |
1682 | That should be good, because we have other ways | |
1683 | to do those things in Emacs. | |
1684 | However, telnet mode seems not to work on 4.2. | |
1685 | So TIOCREMOTE is turned off now. */ | |
1686 | ||
1687 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1688 | will hang. In particular, the "timeout" feature (which | |
1689 | causes a read to return if there is no data available) | |
1690 | does this. Also it is known that telnet mode will hang | |
1691 | in such a way that Emacs must be stopped (perhaps this | |
1692 | is the same problem). | |
1693 | ||
1694 | If TIOCREMOTE is turned off, then there is a bug in | |
1695 | hp-ux which sometimes loses data. Apparently the | |
1696 | code which blocks the master process when the internal | |
1697 | buffer fills up does not work. Other than this, | |
1698 | though, everything else seems to work fine. | |
1699 | ||
1700 | Since the latter lossage is more benign, we may as well | |
1701 | lose that way. -- cph */ | |
1702 | #ifdef FIONBIO | |
1703 | #ifdef SYSV_PTYS | |
1704 | { | |
1705 | int on = 1; | |
1706 | ioctl (fd, FIONBIO, &on); | |
1707 | } | |
1708 | #endif | |
1709 | #endif | |
1710 | #ifdef IBMRTAIX | |
1711 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1712 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1713 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1714 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1715 | /* change this behavior, but I'm not going to hold my breath. */ | |
1716 | signal (SIGHUP, SIG_IGN); | |
1717 | #endif | |
1718 | } | |
1719 | #endif /* HAVE_PTYS */ | |
1720 | \f | |
1721 | #ifdef VMS | |
1722 | ||
1723 | /* Assigning an input channel is done at the start of Emacs execution. | |
1724 | This is called each time Emacs is resumed, also, but does nothing | |
1725 | because input_chain is no longer zero. */ | |
1726 | ||
1727 | init_vms_input () | |
1728 | { | |
1729 | int status; | |
1730 | ||
91bac16a | 1731 | if (input_fd == 0) |
86a5659e | 1732 | { |
91bac16a | 1733 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1734 | if (! (status & 1)) |
1735 | LIB$STOP (status); | |
1736 | } | |
1737 | } | |
1738 | ||
1739 | /* Deassigning the input channel is done before exiting. */ | |
1740 | ||
1741 | stop_vms_input () | |
1742 | { | |
91bac16a | 1743 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1744 | } |
1745 | ||
1746 | short input_buffer; | |
1747 | ||
1748 | /* Request reading one character into the keyboard buffer. | |
1749 | This is done as soon as the buffer becomes empty. */ | |
1750 | ||
1751 | queue_kbd_input () | |
1752 | { | |
1753 | int status; | |
210b2b4f JB |
1754 | extern kbd_input_ast (); |
1755 | ||
86a5659e JB |
1756 | waiting_for_ast = 0; |
1757 | stop_input = 0; | |
91bac16a | 1758 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1759 | &input_iosb, kbd_input_ast, 1, |
1760 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1761 | } | |
1762 | ||
1763 | int input_count; | |
1764 | ||
1765 | /* Ast routine that is called when keyboard input comes in | |
1766 | in accord with the SYS$QIO above. */ | |
1767 | ||
1768 | kbd_input_ast () | |
1769 | { | |
1770 | register int c = -1; | |
1771 | int old_errno = errno; | |
ffd56f97 | 1772 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1773 | |
1774 | if (waiting_for_ast) | |
1775 | SYS$SETEF (input_ef); | |
1776 | waiting_for_ast = 0; | |
1777 | input_count++; | |
1778 | #ifdef ASTDEBUG | |
1779 | if (input_count == 25) | |
1780 | exit (1); | |
1781 | printf ("Ast # %d,", input_count); | |
1782 | printf (" iosb = %x, %x, %x, %x", | |
1783 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1784 | input_iosb.term); | |
1785 | #endif | |
1786 | if (input_iosb.offset) | |
1787 | { | |
1788 | c = input_buffer; | |
1789 | #ifdef ASTDEBUG | |
1790 | printf (", char = 0%o", c); | |
1791 | #endif | |
1792 | } | |
1793 | #ifdef ASTDEBUG | |
1794 | printf ("\n"); | |
1795 | fflush (stdout); | |
1796 | sleep (1); | |
1797 | #endif | |
1798 | if (! stop_input) | |
1799 | queue_kbd_input (); | |
1800 | if (c >= 0) | |
1801 | { | |
1802 | struct input_event e; | |
1803 | e.kind = ascii_keystroke; | |
c81d47b4 | 1804 | XSETINT (e.code, c); |
c81d47b4 | 1805 | XSETFRAME (e.frame_or_window, selected_frame); |
86a5659e JB |
1806 | kbd_buffer_store_event (&e); |
1807 | } | |
ffd56f97 JB |
1808 | if (input_available_clear_time) |
1809 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1810 | errno = old_errno; |
1811 | } | |
1812 | ||
1813 | /* Wait until there is something in kbd_buffer. */ | |
1814 | ||
1815 | wait_for_kbd_input () | |
1816 | { | |
1817 | extern int have_process_input, process_exited; | |
1818 | ||
1819 | /* If already something, avoid doing system calls. */ | |
1820 | if (detect_input_pending ()) | |
1821 | { | |
1822 | return; | |
1823 | } | |
1824 | /* Clear a flag, and tell ast routine above to set it. */ | |
1825 | SYS$CLREF (input_ef); | |
1826 | waiting_for_ast = 1; | |
1827 | /* Check for timing error: ast happened while we were doing that. */ | |
1828 | if (!detect_input_pending ()) | |
1829 | { | |
1830 | /* No timing error: wait for flag to be set. */ | |
1831 | set_waiting_for_input (0); | |
1832 | SYS$WFLOR (input_ef, input_eflist); | |
1833 | clear_waiting_for_input (0); | |
1834 | if (!detect_input_pending ()) | |
1835 | /* Check for subprocess input availability */ | |
1836 | { | |
1837 | int dsp = have_process_input || process_exited; | |
1838 | ||
1839 | SYS$CLREF (process_ef); | |
1840 | if (have_process_input) | |
1841 | process_command_input (); | |
1842 | if (process_exited) | |
1843 | process_exit (); | |
1844 | if (dsp) | |
1845 | { | |
1846 | update_mode_lines++; | |
56b18525 | 1847 | prepare_menu_bars (); |
86a5659e JB |
1848 | redisplay_preserve_echo_area (); |
1849 | } | |
1850 | } | |
1851 | } | |
1852 | waiting_for_ast = 0; | |
1853 | } | |
1854 | ||
1855 | /* Get rid of any pending QIO, when we are about to suspend | |
1856 | or when we want to throw away pending input. | |
1857 | We wait for a positive sign that the AST routine has run | |
1858 | and therefore there is no I/O request queued when we return. | |
1859 | SYS$SETAST is used to avoid a timing error. */ | |
1860 | ||
1861 | end_kbd_input () | |
1862 | { | |
1863 | #ifdef ASTDEBUG | |
1864 | printf ("At end_kbd_input.\n"); | |
1865 | fflush (stdout); | |
1866 | sleep (1); | |
1867 | #endif | |
1868 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
1869 | { | |
91bac16a | 1870 | SYS$CANCEL (input_fd); |
86a5659e JB |
1871 | return; |
1872 | } | |
1873 | ||
1874 | SYS$SETAST (0); | |
1875 | /* Clear a flag, and tell ast routine above to set it. */ | |
1876 | SYS$CLREF (input_ef); | |
1877 | waiting_for_ast = 1; | |
1878 | stop_input = 1; | |
91bac16a | 1879 | SYS$CANCEL (input_fd); |
86a5659e JB |
1880 | SYS$SETAST (1); |
1881 | SYS$WAITFR (input_ef); | |
1882 | waiting_for_ast = 0; | |
1883 | } | |
1884 | ||
1885 | /* Wait for either input available or time interval expiry. */ | |
1886 | ||
1887 | input_wait_timeout (timeval) | |
1888 | int timeval; /* Time to wait, in seconds */ | |
1889 | { | |
1890 | int time [2]; | |
1891 | static int zero = 0; | |
1892 | static int large = -10000000; | |
1893 | ||
1894 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1895 | ||
1896 | /* If already something, avoid doing system calls. */ | |
1897 | if (detect_input_pending ()) | |
1898 | { | |
1899 | return; | |
1900 | } | |
1901 | /* Clear a flag, and tell ast routine above to set it. */ | |
1902 | SYS$CLREF (input_ef); | |
1903 | waiting_for_ast = 1; | |
1904 | /* Check for timing error: ast happened while we were doing that. */ | |
1905 | if (!detect_input_pending ()) | |
1906 | { | |
1907 | /* No timing error: wait for flag to be set. */ | |
1908 | SYS$CANTIM (1, 0); | |
1909 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1910 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
1911 | } | |
1912 | waiting_for_ast = 0; | |
1913 | } | |
1914 | ||
1915 | /* The standard `sleep' routine works some other way | |
1916 | and it stops working if you have ever quit out of it. | |
1917 | This one continues to work. */ | |
1918 | ||
1919 | sys_sleep (timeval) | |
1920 | int timeval; | |
1921 | { | |
1922 | int time [2]; | |
1923 | static int zero = 0; | |
1924 | static int large = -10000000; | |
1925 | ||
1926 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1927 | ||
1928 | SYS$CANTIM (1, 0); | |
1929 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1930 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
1931 | } | |
1932 | ||
23dab951 RS |
1933 | init_sigio (fd) |
1934 | int fd; | |
86a5659e JB |
1935 | { |
1936 | request_sigio (); | |
1937 | } | |
1938 | ||
1939 | reset_sigio () | |
1940 | { | |
1941 | unrequest_sigio (); | |
1942 | } | |
1943 | ||
1944 | request_sigio () | |
1945 | { | |
1946 | croak ("request sigio"); | |
1947 | } | |
1948 | ||
1949 | unrequest_sigio () | |
1950 | { | |
1951 | croak ("unrequest sigio"); | |
1952 | } | |
1953 | ||
1954 | #endif /* VMS */ | |
1955 | \f | |
1956 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
1957 | #ifndef CANNOT_DUMP | |
1958 | #define NEED_STARTS | |
1959 | #endif | |
1960 | ||
1961 | #ifndef SYSTEM_MALLOC | |
1962 | #ifndef NEED_STARTS | |
1963 | #define NEED_STARTS | |
1964 | #endif | |
1965 | #endif | |
1966 | ||
1967 | #ifdef NEED_STARTS | |
1968 | /* Some systems that cannot dump also cannot implement these. */ | |
1969 | ||
1970 | /* | |
1971 | * Return the address of the start of the text segment prior to | |
1972 | * doing an unexec. After unexec the return value is undefined. | |
1973 | * See crt0.c for further explanation and _start. | |
1974 | * | |
1975 | */ | |
1976 | ||
260fe597 | 1977 | #ifndef HAVE_TEXT_START |
86a5659e JB |
1978 | char * |
1979 | start_of_text () | |
1980 | { | |
1981 | #ifdef TEXT_START | |
1982 | return ((char *) TEXT_START); | |
1983 | #else | |
1984 | #ifdef GOULD | |
1985 | extern csrt (); | |
1986 | return ((char *) csrt); | |
1987 | #else /* not GOULD */ | |
1988 | extern int _start (); | |
1989 | return ((char *) _start); | |
1990 | #endif /* GOULD */ | |
1991 | #endif /* TEXT_START */ | |
1992 | } | |
260fe597 | 1993 | #endif /* not HAVE_TEXT_START */ |
86a5659e JB |
1994 | |
1995 | /* | |
1996 | * Return the address of the start of the data segment prior to | |
1997 | * doing an unexec. After unexec the return value is undefined. | |
1998 | * See crt0.c for further information and definition of data_start. | |
1999 | * | |
2000 | * Apparently, on BSD systems this is etext at startup. On | |
2001 | * USG systems (swapping) this is highly mmu dependent and | |
2002 | * is also dependent on whether or not the program is running | |
2003 | * with shared text. Generally there is a (possibly large) | |
2004 | * gap between end of text and start of data with shared text. | |
2005 | * | |
2006 | * On Uniplus+ systems with shared text, data starts at a | |
2007 | * fixed address. Each port (from a given oem) is generally | |
2008 | * different, and the specific value of the start of data can | |
2009 | * be obtained via the UniPlus+ specific "uvar" system call, | |
2010 | * however the method outlined in crt0.c seems to be more portable. | |
2011 | * | |
2012 | * Probably what will have to happen when a USG unexec is available, | |
2013 | * at least on UniPlus, is temacs will have to be made unshared so | |
2014 | * that text and data are contiguous. Then once loadup is complete, | |
2015 | * unexec will produce a shared executable where the data can be | |
2016 | * at the normal shared text boundry and the startofdata variable | |
2017 | * will be patched by unexec to the correct value. | |
2018 | * | |
2019 | */ | |
2020 | ||
2021 | char * | |
2022 | start_of_data () | |
2023 | { | |
2024 | #ifdef DATA_START | |
2025 | return ((char *) DATA_START); | |
6c65530f JB |
2026 | #else |
2027 | #ifdef ORDINARY_LINK | |
2028 | /* | |
2029 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
2030 | * data_start isn't defined. We take the address of environ, which | |
2031 | * is known to live at or near the start of the system crt0.c, and | |
2032 | * we don't sweat the handful of bytes that might lose. | |
2033 | */ | |
2034 | extern char **environ; | |
2035 | ||
2036 | return((char *) &environ); | |
86a5659e JB |
2037 | #else |
2038 | extern int data_start; | |
2039 | return ((char *) &data_start); | |
6c65530f JB |
2040 | #endif /* ORDINARY_LINK */ |
2041 | #endif /* DATA_START */ | |
86a5659e JB |
2042 | } |
2043 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
2044 | ||
2045 | #ifndef CANNOT_DUMP | |
2046 | /* Some systems that cannot dump also cannot implement these. */ | |
2047 | ||
2048 | /* | |
2049 | * Return the address of the end of the text segment prior to | |
2050 | * doing an unexec. After unexec the return value is undefined. | |
2051 | */ | |
2052 | ||
2053 | char * | |
2054 | end_of_text () | |
2055 | { | |
2056 | #ifdef TEXT_END | |
2057 | return ((char *) TEXT_END); | |
2058 | #else | |
2059 | extern int etext; | |
2060 | return ((char *) &etext); | |
2061 | #endif | |
2062 | } | |
2063 | ||
2064 | /* | |
2065 | * Return the address of the end of the data segment prior to | |
2066 | * doing an unexec. After unexec the return value is undefined. | |
2067 | */ | |
2068 | ||
2069 | char * | |
2070 | end_of_data () | |
2071 | { | |
2072 | #ifdef DATA_END | |
2073 | return ((char *) DATA_END); | |
2074 | #else | |
2075 | extern int edata; | |
2076 | return ((char *) &edata); | |
2077 | #endif | |
2078 | } | |
2079 | ||
2080 | #endif /* not CANNOT_DUMP */ | |
2081 | \f | |
c0c86835 KH |
2082 | /* init_system_name sets up the string for the Lisp function |
2083 | system-name to return. */ | |
86a5659e JB |
2084 | |
2085 | #ifdef BSD4_1 | |
2086 | #include <whoami.h> | |
2087 | #endif | |
2088 | ||
c0c86835 | 2089 | extern Lisp_Object Vsystem_name; |
86a5659e | 2090 | |
f8a80313 | 2091 | #ifndef BSD4_1 |
f8a80313 RS |
2092 | #ifndef VMS |
2093 | #ifdef HAVE_SOCKETS | |
2094 | #include <sys/socket.h> | |
2095 | #include <netdb.h> | |
2096 | #endif /* HAVE_SOCKETS */ | |
2097 | #endif /* not VMS */ | |
f8a80313 RS |
2098 | #endif /* not BSD4_1 */ |
2099 | ||
c0c86835 KH |
2100 | void |
2101 | init_system_name () | |
86a5659e | 2102 | { |
86a5659e | 2103 | #ifdef BSD4_1 |
c0c86835 | 2104 | Vsystem_name = build_string (sysname); |
67004ffb | 2105 | #else |
67004ffb | 2106 | #ifdef VMS |
c0c86835 KH |
2107 | char *sp, *end; |
2108 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2109 | Vsystem_name = build_string ("vax-vms"); | |
2110 | else if ((end = index (sp, ':')) == 0) | |
2111 | Vsystem_name = build_string (sp); | |
2112 | else | |
2113 | Vsystem_name = make_string (sp, end - sp); | |
67004ffb | 2114 | #else |
210b2b4f | 2115 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
2116 | struct utsname uts; |
2117 | uname (&uts); | |
2118 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 2119 | #else /* HAVE_GETHOSTNAME */ |
c0c86835 KH |
2120 | int hostname_size = 256; |
2121 | char *hostname = (char *) alloca (hostname_size); | |
2122 | ||
2123 | /* Try to get the host name; if the buffer is too short, try | |
2124 | again. Apparently, the only indication gethostname gives of | |
2125 | whether the buffer was large enough is the presence or absence | |
2126 | of a '\0' in the string. Eech. */ | |
2127 | for (;;) | |
2128 | { | |
2129 | gethostname (hostname, hostname_size - 1); | |
2130 | hostname[hostname_size - 1] = '\0'; | |
2131 | ||
2132 | /* Was the buffer large enough for the '\0'? */ | |
2133 | if (strlen (hostname) < hostname_size - 1) | |
2134 | break; | |
2135 | ||
2136 | hostname_size <<= 1; | |
2137 | hostname = (char *) alloca (hostname_size); | |
2138 | } | |
67004ffb | 2139 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
2140 | /* Turn the hostname into the official, fully-qualified hostname. |
2141 | Don't do this if we're going to dump; this can confuse system | |
2142 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 2143 | #ifndef CANNOT_DUMP |
c0c86835 | 2144 | if (initialized) |
67004ffb | 2145 | #endif /* not CANNOT_DUMP */ |
c0c86835 | 2146 | { |
efa04277 RS |
2147 | struct hostent *hp; |
2148 | int count; | |
2149 | for (count = 0; count < 10; count++) | |
2150 | { | |
e24f1d55 RS |
2151 | #ifdef TRY_AGAIN |
2152 | h_errno = 0; | |
2153 | #endif | |
efa04277 RS |
2154 | hp = gethostbyname (hostname); |
2155 | #ifdef TRY_AGAIN | |
2156 | if (! (hp == 0 && h_errno == TRY_AGAIN)) | |
2157 | #endif | |
2158 | break; | |
2159 | Fsleep_for (make_number (1), Qnil); | |
2160 | } | |
c0c86835 KH |
2161 | if (hp) |
2162 | { | |
2163 | char *fqdn = hp->h_name; | |
2164 | char *p; | |
2165 | ||
2166 | if (!index (fqdn, '.')) | |
2167 | { | |
2168 | /* We still don't have a fully qualified domain name. | |
2169 | Try to find one in the list of alternate names */ | |
2170 | char **alias = hp->h_aliases; | |
2171 | while (*alias && !index (*alias, '.')) | |
2172 | alias++; | |
2173 | if (*alias) | |
2174 | fqdn = *alias; | |
2175 | } | |
2176 | hostname = fqdn; | |
ab1649fe | 2177 | #if 0 |
c0c86835 KH |
2178 | /* Convert the host name to lower case. */ |
2179 | /* Using ctype.h here would introduce a possible locale | |
2180 | dependence that is probably wrong for hostnames. */ | |
2181 | p = hostname; | |
2182 | while (*p) | |
2183 | { | |
2184 | if (*p >= 'A' && *p <= 'Z') | |
2185 | *p += 'a' - 'A'; | |
2186 | p++; | |
2187 | } | |
2188 | #endif | |
2189 | } | |
2190 | } | |
67004ffb | 2191 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 2192 | Vsystem_name = build_string (hostname); |
67004ffb | 2193 | #endif /* HAVE_GETHOSTNAME */ |
210b2b4f | 2194 | #endif /* VMS */ |
67004ffb | 2195 | #endif /* BSD4_1 */ |
c0c86835 KH |
2196 | { |
2197 | unsigned char *p; | |
2198 | for (p = XSTRING (Vsystem_name)->data; *p; p++) | |
2199 | if (*p == ' ' || *p == '\t') | |
2200 | *p = '-'; | |
2201 | } | |
67004ffb | 2202 | } |
86a5659e JB |
2203 | \f |
2204 | #ifndef VMS | |
86d1f23a | 2205 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) |
86a5659e | 2206 | |
86d1f23a KH |
2207 | #include "sysselect.h" |
2208 | #undef select | |
2209 | ||
2210 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
2211 | /* Cause explanatory error message at compile time, |
2212 | since the select emulation is not good enough for X. */ | |
2213 | int *x = &x_windows_lose_if_no_select_system_call; | |
2214 | #endif | |
2215 | ||
2216 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2217 | * Only checks read descriptors. | |
2218 | */ | |
2219 | /* How long to wait between checking fds in select */ | |
2220 | #define SELECT_PAUSE 1 | |
2221 | int select_alarmed; | |
2222 | ||
2223 | /* For longjmp'ing back to read_input_waiting. */ | |
2224 | ||
2225 | jmp_buf read_alarm_throw; | |
2226 | ||
2227 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2228 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2229 | ||
2230 | int read_alarm_should_throw; | |
2231 | ||
2232 | SIGTYPE | |
2233 | select_alarm () | |
2234 | { | |
2235 | select_alarmed = 1; | |
2236 | #ifdef BSD4_1 | |
2237 | sigrelse (SIGALRM); | |
2238 | #else /* not BSD4_1 */ | |
2239 | signal (SIGALRM, SIG_IGN); | |
2240 | #endif /* not BSD4_1 */ | |
2241 | if (read_alarm_should_throw) | |
2242 | longjmp (read_alarm_throw, 1); | |
2243 | } | |
2244 | ||
fe03522b | 2245 | #ifndef WINDOWSNT |
86a5659e JB |
2246 | /* Only rfds are checked. */ |
2247 | int | |
86d1f23a | 2248 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 2249 | int nfds; |
86d1f23a KH |
2250 | SELECT_TYPE *rfds, *wfds, *efds; |
2251 | EMACS_TIME *timeout; | |
86a5659e | 2252 | { |
86d1f23a KH |
2253 | int ravail = 0, old_alarm; |
2254 | SELECT_TYPE orfds; | |
2255 | int timeoutval; | |
2256 | int *local_timeout; | |
86a5659e JB |
2257 | extern int proc_buffered_char[]; |
2258 | #ifndef subprocesses | |
2259 | int process_tick = 0, update_tick = 0; | |
2260 | #else | |
2261 | extern int process_tick, update_tick; | |
2262 | #endif | |
2263 | SIGTYPE (*old_trap) (); | |
2264 | unsigned char buf; | |
2265 | ||
86d1f23a KH |
2266 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
2267 | /* If we're using X, then the native select will work; we only need the | |
2268 | emulation for non-X usage. */ | |
2269 | if (!NILP (Vwindow_system)) | |
2270 | return select (nfds, rfds, wfds, efds, timeout); | |
2271 | #endif | |
2272 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
2273 | local_timeout = &timeoutval; | |
2274 | FD_ZERO (&orfds); | |
86a5659e JB |
2275 | if (rfds) |
2276 | { | |
2277 | orfds = *rfds; | |
86d1f23a | 2278 | FD_ZERO (rfds); |
86a5659e JB |
2279 | } |
2280 | if (wfds) | |
86d1f23a | 2281 | FD_ZERO (wfds); |
86a5659e | 2282 | if (efds) |
86d1f23a | 2283 | FD_ZERO (efds); |
86a5659e JB |
2284 | |
2285 | /* If we are looking only for the terminal, with no timeout, | |
2286 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
2287 | if (*local_timeout == 100000 && process_tick == update_tick |
2288 | && FD_ISSET (0, &orfds)) | |
86a5659e | 2289 | { |
86d1f23a KH |
2290 | int fd; |
2291 | for (fd = 1; fd < nfds; ++fd) | |
2292 | if (FD_ISSET (fd, &orfds)) | |
2293 | goto hardway; | |
86a5659e JB |
2294 | if (! detect_input_pending ()) |
2295 | read_input_waiting (); | |
86d1f23a | 2296 | FD_SET (0, rfds); |
86a5659e JB |
2297 | return 1; |
2298 | } | |
2299 | ||
86d1f23a | 2300 | hardway: |
86a5659e JB |
2301 | /* Once a second, till the timer expires, check all the flagged read |
2302 | * descriptors to see if any input is available. If there is some then | |
2303 | * set the corresponding bit in the return copy of rfds. | |
2304 | */ | |
2305 | while (1) | |
2306 | { | |
86d1f23a | 2307 | register int to_check, fd; |
86a5659e JB |
2308 | |
2309 | if (rfds) | |
2310 | { | |
86d1f23a | 2311 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 2312 | { |
86d1f23a | 2313 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
2314 | { |
2315 | int avail = 0, status = 0; | |
2316 | ||
86d1f23a | 2317 | if (fd == 0) |
86a5659e JB |
2318 | avail = detect_input_pending (); /* Special keyboard handler */ |
2319 | else | |
2320 | { | |
2321 | #ifdef FIONREAD | |
2322 | status = ioctl (fd, FIONREAD, &avail); | |
2323 | #else /* no FIONREAD */ | |
207bdbdb RS |
2324 | #ifdef MSDOS |
2325 | abort (); /* I don't think we need it. */ | |
2326 | #else /* not MSDOS */ | |
86a5659e JB |
2327 | /* Hoping it will return -1 if nothing available |
2328 | or 0 if all 0 chars requested are read. */ | |
2329 | if (proc_buffered_char[fd] >= 0) | |
2330 | avail = 1; | |
2331 | else | |
2332 | { | |
2333 | avail = read (fd, &buf, 1); | |
2334 | if (avail > 0) | |
2335 | proc_buffered_char[fd] = buf; | |
2336 | } | |
207bdbdb | 2337 | #endif /* not MSDOS */ |
86a5659e JB |
2338 | #endif /* no FIONREAD */ |
2339 | } | |
2340 | if (status >= 0 && avail > 0) | |
2341 | { | |
86d1f23a | 2342 | FD_SET (fd, rfds); |
86a5659e JB |
2343 | ravail++; |
2344 | } | |
2345 | } | |
2346 | } | |
2347 | } | |
2348 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2349 | break; | |
2350 | old_alarm = alarm (0); | |
34567704 | 2351 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2352 | select_alarmed = 0; |
2353 | alarm (SELECT_PAUSE); | |
2354 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2355 | while (select_alarmed == 0 && *local_timeout != 0 | |
2356 | && process_tick == update_tick) | |
2357 | { | |
207bdbdb | 2358 | #ifdef MSDOS |
86d1f23a | 2359 | sleep_or_kbd_hit (SELECT_PAUSE, FD_ISSET (0, &orfds) != 0); |
207bdbdb RS |
2360 | select_alarm (); |
2361 | #else /* not MSDOS */ | |
86a5659e JB |
2362 | /* If we are interested in terminal input, |
2363 | wait by reading the terminal. | |
2364 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2365 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2366 | { |
2367 | read_input_waiting (); | |
2368 | if (detect_input_pending ()) | |
2369 | select_alarmed = 1; | |
2370 | } | |
2371 | else | |
2372 | pause (); | |
207bdbdb | 2373 | #endif /* not MSDOS */ |
86a5659e JB |
2374 | } |
2375 | (*local_timeout) -= SELECT_PAUSE; | |
2376 | /* Reset the old alarm if there was one */ | |
2377 | alarm (0); | |
2378 | signal (SIGALRM, old_trap); | |
2379 | if (old_alarm != 0) | |
2380 | { | |
2381 | /* Reset or forge an interrupt for the original handler. */ | |
2382 | old_alarm -= SELECT_PAUSE; | |
2383 | if (old_alarm <= 0) | |
2384 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2385 | else | |
2386 | alarm (old_alarm); | |
2387 | } | |
2388 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2389 | break; | |
2390 | } | |
2391 | return ravail; | |
2392 | } | |
fe03522b | 2393 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2394 | |
2395 | /* Read keyboard input into the standard buffer, | |
2396 | waiting for at least one character. */ | |
2397 | ||
2398 | /* Make all keyboard buffers much bigger when using X windows. */ | |
2399 | #ifdef HAVE_X_WINDOWS | |
2400 | #define BUFFER_SIZE_FACTOR 16 | |
2401 | #else | |
2402 | #define BUFFER_SIZE_FACTOR 1 | |
2403 | #endif | |
2404 | ||
2405 | read_input_waiting () | |
2406 | { | |
86a5659e | 2407 | struct input_event e; |
34567704 JB |
2408 | int nread, i; |
2409 | extern int quit_char; | |
86a5659e JB |
2410 | |
2411 | if (read_socket_hook) | |
2412 | { | |
f4a7e5bd RS |
2413 | struct input_event buf[256]; |
2414 | ||
86a5659e JB |
2415 | read_alarm_should_throw = 0; |
2416 | if (! setjmp (read_alarm_throw)) | |
f4a7e5bd | 2417 | nread = (*read_socket_hook) (0, buf, 256, 1, 0); |
86a5659e JB |
2418 | else |
2419 | nread = -1; | |
f4a7e5bd RS |
2420 | |
2421 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2422 | for (i = 0; i < nread; i++) | |
2423 | { | |
2424 | kbd_buffer_store_event (&buf[i]); | |
2425 | /* Don't look at input that follows a C-g too closely. | |
2426 | This reduces lossage due to autorepeat on C-g. */ | |
2427 | if (buf[i].kind == ascii_keystroke | |
30bef8ec | 2428 | && buf[i].code == quit_char) |
f4a7e5bd RS |
2429 | break; |
2430 | } | |
86a5659e JB |
2431 | } |
2432 | else | |
86a5659e | 2433 | { |
f4a7e5bd RS |
2434 | char buf[3]; |
2435 | nread = read (fileno (stdin), buf, 1); | |
2436 | ||
2437 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2438 | e.kind = ascii_keystroke; | |
bd513d9d | 2439 | XSETFRAME (e.frame_or_window, selected_frame); |
f4a7e5bd RS |
2440 | e.modifiers = 0; |
2441 | for (i = 0; i < nread; i++) | |
a00d5589 | 2442 | { |
f4a7e5bd RS |
2443 | /* Convert chars > 0177 to meta events if desired. |
2444 | We do this under the same conditions that read_avail_input does. */ | |
2445 | if (read_socket_hook == 0) | |
2446 | { | |
2447 | /* If the user says she has a meta key, then believe her. */ | |
2448 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2449 | e.modifiers = meta_modifier; | |
2450 | if (meta_key != 2) | |
2451 | buf[i] &= ~0x80; | |
2452 | } | |
b95520f5 | 2453 | |
c81d47b4 | 2454 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2455 | kbd_buffer_store_event (&e); |
2456 | /* Don't look at input that follows a C-g too closely. | |
2457 | This reduces lossage due to autorepeat on C-g. */ | |
2458 | if (buf[i] == quit_char) | |
2459 | break; | |
2460 | } | |
86a5659e JB |
2461 | } |
2462 | } | |
2463 | ||
2464 | #endif /* not HAVE_SELECT */ | |
2465 | #endif /* not VMS */ | |
2466 | \f | |
2467 | #ifdef BSD4_1 | |
86a5659e JB |
2468 | /* |
2469 | * Partially emulate 4.2 open call. | |
2470 | * open is defined as this in 4.1. | |
2471 | * | |
2472 | * - added by Michael Bloom @ Citicorp/TTI | |
2473 | * | |
2474 | */ | |
2475 | ||
2476 | int | |
2477 | sys_open (path, oflag, mode) | |
2478 | char *path; | |
2479 | int oflag, mode; | |
2480 | { | |
2481 | if (oflag & O_CREAT) | |
2482 | return creat (path, mode); | |
2483 | else | |
2484 | return open (path, oflag); | |
2485 | } | |
2486 | ||
23dab951 RS |
2487 | init_sigio (fd) |
2488 | int fd; | |
86a5659e JB |
2489 | { |
2490 | if (noninteractive) | |
2491 | return; | |
2492 | lmode = LINTRUP | lmode; | |
23dab951 | 2493 | ioctl (fd, TIOCLSET, &lmode); |
86a5659e JB |
2494 | } |
2495 | ||
2496 | reset_sigio () | |
2497 | { | |
2498 | if (noninteractive) | |
2499 | return; | |
2500 | lmode = ~LINTRUP & lmode; | |
2501 | ioctl (0, TIOCLSET, &lmode); | |
2502 | } | |
2503 | ||
2504 | request_sigio () | |
2505 | { | |
2506 | sigrelse (SIGTINT); | |
2507 | ||
2508 | interrupts_deferred = 0; | |
2509 | } | |
2510 | ||
2511 | unrequest_sigio () | |
2512 | { | |
2513 | sighold (SIGTINT); | |
2514 | ||
2515 | interrupts_deferred = 1; | |
2516 | } | |
2517 | ||
2518 | /* still inside #ifdef BSD4_1 */ | |
2519 | #ifdef subprocesses | |
2520 | ||
2521 | int sigheld; /* Mask of held signals */ | |
2522 | ||
2523 | sigholdx (signum) | |
2524 | int signum; | |
2525 | { | |
2526 | sigheld |= sigbit (signum); | |
2527 | sighold (signum); | |
2528 | } | |
2529 | ||
2530 | sigisheld (signum) | |
2531 | int signum; | |
2532 | { | |
2533 | sigheld |= sigbit (signum); | |
2534 | } | |
2535 | ||
2536 | sigunhold (signum) | |
2537 | int signum; | |
2538 | { | |
2539 | sigheld &= ~sigbit (signum); | |
2540 | sigrelse (signum); | |
2541 | } | |
2542 | ||
2543 | sigfree () /* Free all held signals */ | |
2544 | { | |
2545 | int i; | |
2546 | for (i = 0; i < NSIG; i++) | |
2547 | if (sigheld & sigbit (i)) | |
2548 | sigrelse (i); | |
2549 | sigheld = 0; | |
2550 | } | |
2551 | ||
2552 | sigbit (i) | |
2553 | { | |
2554 | return 1 << (i - 1); | |
2555 | } | |
2556 | #endif /* subprocesses */ | |
2557 | #endif /* BSD4_1 */ | |
2558 | \f | |
2559 | /* POSIX signals support - DJB */ | |
2560 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2561 | ||
2562 | #ifdef POSIX_SIGNALS | |
2563 | ||
2564 | sigset_t old_mask, empty_mask, full_mask, temp_mask; | |
2565 | static struct sigaction new_action, old_action; | |
2566 | ||
2567 | init_signals () | |
2568 | { | |
00eaaa32 JB |
2569 | sigemptyset (&empty_mask); |
2570 | sigfillset (&full_mask); | |
86a5659e JB |
2571 | } |
2572 | ||
86a5659e JB |
2573 | signal_handler_t |
2574 | sys_signal (int signal_number, signal_handler_t action) | |
2575 | { | |
2576 | #ifdef DGUX | |
2577 | /* This gets us restartable system calls for efficiency. | |
2578 | The "else" code will works as well. */ | |
2579 | return (berk_signal (signal_number, action)); | |
2580 | #else | |
2581 | sigemptyset (&new_action.sa_mask); | |
2582 | new_action.sa_handler = action; | |
25ab68af RS |
2583 | #ifdef SA_RESTART |
2584 | /* Emacs mostly works better with restartable system services. If this | |
2585 | * flag exists, we probably want to turn it on here. | |
2586 | */ | |
2587 | new_action.sa_flags = SA_RESTART; | |
2588 | #else | |
4a785b6e | 2589 | new_action.sa_flags = 0; |
25ab68af | 2590 | #endif |
d32b2f3c | 2591 | sigaction (signal_number, &new_action, &old_action); |
86a5659e JB |
2592 | return (old_action.sa_handler); |
2593 | #endif /* DGUX */ | |
2594 | } | |
2595 | ||
e065a56e JB |
2596 | #ifndef __GNUC__ |
2597 | /* If we're compiling with GCC, we don't need this function, since it | |
2598 | can be written as a macro. */ | |
2599 | sigset_t | |
2600 | sys_sigmask (int sig) | |
2601 | { | |
2602 | sigset_t mask; | |
2603 | sigemptyset (&mask); | |
2604 | sigaddset (&mask, sig); | |
2605 | return mask; | |
2606 | } | |
2607 | #endif | |
2608 | ||
86a5659e JB |
2609 | int |
2610 | sys_sigpause (sigset_t new_mask) | |
2611 | { | |
2612 | /* pause emulating berk sigpause... */ | |
2613 | sigsuspend (&new_mask); | |
2614 | return (EINTR); | |
2615 | } | |
2616 | ||
2617 | /* I'd like to have these guys return pointers to the mask storage in here, | |
2618 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2619 | safe and pass the structure. It normally won't be more than 2 bytes | |
2620 | anyhow. - DJB */ | |
2621 | ||
2622 | sigset_t | |
2623 | sys_sigblock (sigset_t new_mask) | |
2624 | { | |
2625 | sigset_t old_mask; | |
2626 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2627 | return (old_mask); | |
2628 | } | |
2629 | ||
2630 | sigset_t | |
2631 | sys_sigunblock (sigset_t new_mask) | |
2632 | { | |
2633 | sigset_t old_mask; | |
2634 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2635 | return (old_mask); | |
2636 | } | |
2637 | ||
2638 | sigset_t | |
2639 | sys_sigsetmask (sigset_t new_mask) | |
2640 | { | |
2641 | sigset_t old_mask; | |
2642 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2643 | return (old_mask); | |
2644 | } | |
2645 | ||
2646 | #endif /* POSIX_SIGNALS */ | |
2647 | \f | |
9927a7b1 | 2648 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
2649 | #ifdef random |
2650 | #define HAVE_RANDOM | |
2651 | #endif | |
2652 | #endif | |
2653 | ||
2654 | /* Figure out how many bits the system's random number generator uses. | |
2655 | `random' and `lrand48' are assumed to return 31 usable bits. | |
2656 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
2657 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
2658 | ||
2659 | #ifndef RAND_BITS | |
2660 | # ifdef HAVE_RANDOM | |
2661 | # define RAND_BITS 31 | |
2662 | # else /* !HAVE_RANDOM */ | |
2663 | # ifdef HAVE_LRAND48 | |
2664 | # define RAND_BITS 31 | |
2665 | # define random lrand48 | |
2666 | # else /* !HAVE_LRAND48 */ | |
2667 | # define RAND_BITS 15 | |
2668 | # if RAND_MAX == 32767 | |
2669 | # define random rand | |
2670 | # else /* RAND_MAX != 32767 */ | |
2671 | # if RAND_MAX == 2147483647 | |
2672 | # define random() (rand () >> 16) | |
2673 | # else /* RAND_MAX != 2147483647 */ | |
2674 | # ifdef USG | |
2675 | # define random rand | |
2676 | # else | |
2677 | # define random() (rand () >> 16) | |
2678 | # endif /* !BSD */ | |
2679 | # endif /* RAND_MAX != 2147483647 */ | |
2680 | # endif /* RAND_MAX != 32767 */ | |
2681 | # endif /* !HAVE_LRAND48 */ | |
2682 | # endif /* !HAVE_RANDOM */ | |
2683 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2684 | |
4bb8c8b7 KH |
2685 | void |
2686 | seed_random (arg) | |
2687 | long arg; | |
86a5659e | 2688 | { |
4bb8c8b7 KH |
2689 | #ifdef HAVE_RANDOM |
2690 | srandom ((unsigned int)arg); | |
f8b53a82 | 2691 | #else |
4bb8c8b7 | 2692 | # ifdef HAVE_LRAND48 |
76425a49 | 2693 | srand48 (arg); |
4bb8c8b7 KH |
2694 | # else |
2695 | srand ((unsigned int)arg); | |
2696 | # endif | |
2e46c7c6 | 2697 | #endif |
86a5659e JB |
2698 | } |
2699 | ||
4bb8c8b7 KH |
2700 | /* |
2701 | * Build a full Emacs-sized word out of whatever we've got. | |
2702 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
2703 | */ | |
2704 | long | |
2705 | get_random () | |
2706 | { | |
2707 | long val = random (); | |
2708 | #if VALBITS > RAND_BITS | |
2709 | val = (val << RAND_BITS) ^ random (); | |
2710 | #if VALBITS > 2*RAND_BITS | |
2711 | val = (val << RAND_BITS) ^ random (); | |
2712 | #if VALBITS > 3*RAND_BITS | |
2713 | val = (val << RAND_BITS) ^ random (); | |
2714 | #if VALBITS > 4*RAND_BITS | |
2715 | val = (val << RAND_BITS) ^ random (); | |
2716 | #endif /* need at least 5 */ | |
2717 | #endif /* need at least 4 */ | |
2718 | #endif /* need at least 3 */ | |
2719 | #endif /* need at least 2 */ | |
2720 | return val & ((1L << VALBITS) - 1); | |
2721 | } | |
86a5659e JB |
2722 | \f |
2723 | #ifdef WRONG_NAME_INSQUE | |
2724 | ||
2725 | insque (q,p) | |
2726 | caddr_t q,p; | |
2727 | { | |
2728 | _insque (q,p); | |
2729 | } | |
2730 | ||
2731 | #endif | |
2732 | \f | |
2733 | #ifdef VMS | |
2734 | ||
2735 | #ifdef getenv | |
2736 | /* If any place else asks for the TERM variable, | |
2737 | allow it to be overridden with the EMACS_TERM variable | |
2738 | before attempting to translate the logical name TERM. As a last | |
2739 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2740 | #undef getenv | |
2741 | char * | |
2742 | sys_getenv (name) | |
2743 | char *name; | |
2744 | { | |
2745 | register char *val; | |
2746 | static char buf[256]; | |
2747 | static struct dsc$descriptor_s equiv | |
2748 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2749 | static struct dsc$descriptor_s d_name | |
2750 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2751 | short eqlen; | |
2752 | ||
2753 | if (!strcmp (name, "TERM")) | |
2754 | { | |
2755 | val = (char *) getenv ("EMACS_TERM"); | |
2756 | if (val) | |
2757 | return val; | |
2758 | } | |
2759 | ||
2760 | d_name.dsc$w_length = strlen (name); | |
2761 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2762 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2763 | { |
2764 | char *str = (char *) xmalloc (eqlen + 1); | |
2765 | bcopy (buf, str, eqlen); | |
2766 | str[eqlen] = '\0'; | |
2767 | /* This is a storage leak, but a pain to fix. With luck, | |
2768 | no one will ever notice. */ | |
2769 | return str; | |
2770 | } | |
2771 | return (char *) getenv (name); | |
2772 | } | |
2773 | #endif /* getenv */ | |
2774 | ||
2775 | #ifdef abort | |
2776 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2777 | to force a call on the debugger from within the image. */ | |
2778 | #undef abort | |
2779 | sys_abort () | |
2780 | { | |
2781 | reset_sys_modes (); | |
2782 | LIB$SIGNAL (SS$_DEBUG); | |
2783 | } | |
2784 | #endif /* abort */ | |
2785 | #endif /* VMS */ | |
2786 | \f | |
2787 | #ifdef VMS | |
2788 | #ifdef LINK_CRTL_SHARE | |
2789 | #ifdef SHAREABLE_LIB_BUG | |
eb8c3be9 | 2790 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2791 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2792 | version which is uninitialized... If not for this "feature", we | |
2793 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2794 | int sys_nerr = 35; | |
2795 | char *sys_errlist[] = | |
2796 | { | |
2797 | "error 0", | |
2798 | "not owner", | |
2799 | "no such file or directory", | |
2800 | "no such process", | |
2801 | "interrupted system call", | |
2802 | "i/o error", | |
2803 | "no such device or address", | |
2804 | "argument list too long", | |
2805 | "exec format error", | |
2806 | "bad file number", | |
2807 | "no child process", | |
2808 | "no more processes", | |
2809 | "not enough memory", | |
2810 | "permission denied", | |
2811 | "bad address", | |
2812 | "block device required", | |
2813 | "mount devices busy", | |
2814 | "file exists", | |
2815 | "cross-device link", | |
2816 | "no such device", | |
2817 | "not a directory", | |
2818 | "is a directory", | |
2819 | "invalid argument", | |
2820 | "file table overflow", | |
2821 | "too many open files", | |
2822 | "not a typewriter", | |
2823 | "text file busy", | |
2824 | "file too big", | |
2825 | "no space left on device", | |
2826 | "illegal seek", | |
2827 | "read-only file system", | |
2828 | "too many links", | |
2829 | "broken pipe", | |
2830 | "math argument", | |
2831 | "result too large", | |
2832 | "I/O stream empty", | |
2833 | "vax/vms specific error code nontranslatable error" | |
2834 | }; | |
2835 | #endif /* SHAREABLE_LIB_BUG */ | |
2836 | #endif /* LINK_CRTL_SHARE */ | |
2837 | #endif /* VMS */ | |
7088d1ca RM |
2838 | |
2839 | #ifndef HAVE_STRERROR | |
fe03522b | 2840 | #ifndef WINDOWSNT |
7088d1ca RM |
2841 | char * |
2842 | strerror (errnum) | |
2843 | int errnum; | |
2844 | { | |
2845 | extern char *sys_errlist[]; | |
2846 | extern int sys_nerr; | |
2847 | ||
2848 | if (errnum >= 0 && errnum < sys_nerr) | |
2849 | return sys_errlist[errnum]; | |
2850 | return (char *) "Unknown error"; | |
2851 | } | |
fe03522b | 2852 | #endif /* not WINDOWSNT */ |
7088d1ca | 2853 | #endif /* ! HAVE_STRERROR */ |
86a5659e JB |
2854 | \f |
2855 | #ifdef INTERRUPTIBLE_OPEN | |
2856 | ||
2857 | int | |
2858 | /* VARARGS 2 */ | |
2859 | sys_open (path, oflag, mode) | |
2860 | char *path; | |
2861 | int oflag, mode; | |
2862 | { | |
2863 | register int rtnval; | |
2864 | ||
2865 | while ((rtnval = open (path, oflag, mode)) == -1 | |
2866 | && (errno == EINTR)); | |
2867 | return (rtnval); | |
2868 | } | |
2869 | ||
2870 | #endif /* INTERRUPTIBLE_OPEN */ | |
2871 | ||
2872 | #ifdef INTERRUPTIBLE_CLOSE | |
2873 | ||
2874 | sys_close (fd) | |
2875 | int fd; | |
2876 | { | |
2877 | register int rtnval; | |
2878 | ||
2879 | while ((rtnval = close (fd)) == -1 | |
2880 | && (errno == EINTR)); | |
2881 | return rtnval; | |
2882 | } | |
2883 | ||
2884 | #endif /* INTERRUPTIBLE_CLOSE */ | |
2885 | ||
2886 | #ifdef INTERRUPTIBLE_IO | |
2887 | ||
2888 | int | |
2889 | sys_read (fildes, buf, nbyte) | |
2890 | int fildes; | |
2891 | char *buf; | |
2892 | unsigned int nbyte; | |
2893 | { | |
2894 | register int rtnval; | |
2895 | ||
2896 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
2897 | && (errno == EINTR)); | |
2898 | return (rtnval); | |
2899 | } | |
2900 | ||
2901 | int | |
2902 | sys_write (fildes, buf, nbyte) | |
2903 | int fildes; | |
2904 | char *buf; | |
2905 | unsigned int nbyte; | |
2906 | { | |
b95520f5 | 2907 | register int rtnval, bytes_written; |
86a5659e | 2908 | |
b95520f5 BF |
2909 | bytes_written = 0; |
2910 | ||
2911 | while (nbyte > 0) | |
2912 | { | |
2913 | rtnval = write (fildes, buf, nbyte); | |
2914 | ||
2915 | if (rtnval == -1) | |
2916 | { | |
2917 | if (errno == EINTR) | |
2918 | continue; | |
2919 | else | |
aa670904 | 2920 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
2921 | } |
2922 | ||
2923 | buf += rtnval; | |
2924 | nbyte -= rtnval; | |
2925 | bytes_written += rtnval; | |
2926 | } | |
2927 | return (bytes_written); | |
86a5659e JB |
2928 | } |
2929 | ||
2930 | #endif /* INTERRUPTIBLE_IO */ | |
2931 | \f | |
0e18d8ef | 2932 | #ifndef HAVE_VFORK |
fe03522b | 2933 | #ifndef WINDOWSNT |
0e18d8ef | 2934 | /* |
fe03522b | 2935 | * Substitute fork for vfork on USG flavors. |
0e18d8ef RS |
2936 | */ |
2937 | ||
2938 | vfork () | |
2939 | { | |
2940 | return (fork ()); | |
2941 | } | |
fe03522b | 2942 | #endif /* not WINDOWSNT */ |
0e18d8ef RS |
2943 | #endif /* not HAVE_VFORK */ |
2944 | \f | |
86a5659e JB |
2945 | #ifdef USG |
2946 | /* | |
2947 | * All of the following are for USG. | |
2948 | * | |
2949 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2950 | * that the user program has elected to catch. Thus the system call | |
2951 | * must be retried in these cases. To handle this without massive | |
2952 | * changes in the source code, we remap the standard system call names | |
2953 | * to names for our own functions in sysdep.c that do the system call | |
2954 | * with retries. Actually, for portability reasons, it is good | |
2955 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2956 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2957 | * adds an extra level of function call overhead but it is almost |
2958 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2959 | */ | |
2960 | ||
00eaaa32 | 2961 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
2962 | char *sys_siglist[NSIG + 1] = |
2963 | { | |
2964 | #ifdef AIX | |
2965 | /* AIX has changed the signals a bit */ | |
2966 | "bogus signal", /* 0 */ | |
2967 | "hangup", /* 1 SIGHUP */ | |
2968 | "interrupt", /* 2 SIGINT */ | |
2969 | "quit", /* 3 SIGQUIT */ | |
2970 | "illegal instruction", /* 4 SIGILL */ | |
2971 | "trace trap", /* 5 SIGTRAP */ | |
2972 | "IOT instruction", /* 6 SIGIOT */ | |
2973 | "crash likely", /* 7 SIGDANGER */ | |
2974 | "floating point exception", /* 8 SIGFPE */ | |
2975 | "kill", /* 9 SIGKILL */ | |
2976 | "bus error", /* 10 SIGBUS */ | |
2977 | "segmentation violation", /* 11 SIGSEGV */ | |
2978 | "bad argument to system call", /* 12 SIGSYS */ | |
2979 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2980 | "alarm clock", /* 14 SIGALRM */ | |
2981 | "software termination signum", /* 15 SIGTERM */ | |
2982 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2983 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2984 | "death of a child", /* 18 SIGCLD */ | |
2985 | "power-fail restart", /* 19 SIGPWR */ | |
2986 | "bogus signal", /* 20 */ | |
2987 | "bogus signal", /* 21 */ | |
2988 | "bogus signal", /* 22 */ | |
2989 | "bogus signal", /* 23 */ | |
2990 | "bogus signal", /* 24 */ | |
2991 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
2992 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
2993 | "I/O intervention required", /* 27 SIGIOINT */ | |
6056c55b | 2994 | #ifdef AIXHFT |
86a5659e JB |
2995 | "HFT grant", /* 28 SIGGRANT */ |
2996 | "HFT retract", /* 29 SIGRETRACT */ | |
2997 | "HFT sound done", /* 30 SIGSOUND */ | |
2998 | "HFT input ready", /* 31 SIGMSG */ | |
6056c55b | 2999 | #endif |
86a5659e JB |
3000 | #else /* not AIX */ |
3001 | "bogus signal", /* 0 */ | |
3002 | "hangup", /* 1 SIGHUP */ | |
3003 | "interrupt", /* 2 SIGINT */ | |
3004 | "quit", /* 3 SIGQUIT */ | |
3005 | "illegal instruction", /* 4 SIGILL */ | |
3006 | "trace trap", /* 5 SIGTRAP */ | |
3007 | "IOT instruction", /* 6 SIGIOT */ | |
3008 | "EMT instruction", /* 7 SIGEMT */ | |
3009 | "floating point exception", /* 8 SIGFPE */ | |
3010 | "kill", /* 9 SIGKILL */ | |
3011 | "bus error", /* 10 SIGBUS */ | |
3012 | "segmentation violation", /* 11 SIGSEGV */ | |
3013 | "bad argument to system call", /* 12 SIGSYS */ | |
3014 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
3015 | "alarm clock", /* 14 SIGALRM */ | |
3016 | "software termination signum", /* 15 SIGTERM */ | |
3017 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3018 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3019 | "death of a child", /* 18 SIGCLD */ | |
3020 | "power-fail restart", /* 19 SIGPWR */ | |
0f0ea229 RS |
3021 | #ifdef sun |
3022 | "window size change", /* 20 SIGWINCH */ | |
3023 | "urgent socket condition", /* 21 SIGURG */ | |
3024 | "pollable event occured", /* 22 SIGPOLL */ | |
3025 | "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ | |
3026 | "user stop requested from tty", /* 24 SIGTSTP */ | |
3027 | "stopped process has been continued", /* 25 SIGCONT */ | |
3028 | "background tty read attempted", /* 26 SIGTTIN */ | |
3029 | "background tty write attempted", /* 27 SIGTTOU */ | |
3030 | "virtual timer expired", /* 28 SIGVTALRM */ | |
3031 | "profiling timer expired", /* 29 SIGPROF */ | |
3032 | "exceeded cpu limit", /* 30 SIGXCPU */ | |
3033 | "exceeded file size limit", /* 31 SIGXFSZ */ | |
3034 | "process's lwps are blocked", /* 32 SIGWAITING */ | |
3035 | "special signal used by thread library", /* 33 SIGLWP */ | |
2da0df4d | 3036 | #ifdef SIGFREEZE |
0f0ea229 | 3037 | "Special Signal Used By CPR", /* 34 SIGFREEZE */ |
2da0df4d RS |
3038 | #endif |
3039 | #ifdef SIGTHAW | |
0f0ea229 | 3040 | "Special Signal Used By CPR", /* 35 SIGTHAW */ |
2da0df4d | 3041 | #endif |
0f0ea229 | 3042 | #endif /* sun */ |
86a5659e JB |
3043 | #endif /* not AIX */ |
3044 | 0 | |
3045 | }; | |
70080de1 | 3046 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
3047 | |
3048 | /* | |
3049 | * Warning, this function may not duplicate 4.2 action properly | |
3050 | * under error conditions. | |
3051 | */ | |
3052 | ||
3053 | #ifndef MAXPATHLEN | |
3054 | /* In 4.1, param.h fails to define this. */ | |
3055 | #define MAXPATHLEN 1024 | |
3056 | #endif | |
3057 | ||
3058 | #ifndef HAVE_GETWD | |
3059 | ||
3060 | char * | |
3061 | getwd (pathname) | |
3062 | char *pathname; | |
3063 | { | |
3064 | char *npath, *spath; | |
3065 | extern char *getcwd (); | |
3066 | ||
9ac0d9e0 | 3067 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 3068 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
3069 | if (spath == 0) |
3070 | return spath; | |
86a5659e JB |
3071 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
3072 | up to first slash. Should be harmless on other systems. */ | |
3073 | while (*npath && *npath != '/') | |
3074 | npath++; | |
3075 | strcpy (pathname, npath); | |
3076 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 3077 | UNBLOCK_INPUT; |
86a5659e JB |
3078 | return pathname; |
3079 | } | |
3080 | ||
3081 | #endif /* HAVE_GETWD */ | |
3082 | ||
3083 | /* | |
3084 | * Emulate rename using unlink/link. Note that this is | |
3085 | * only partially correct. Also, doesn't enforce restriction | |
3086 | * that files be of same type (regular->regular, dir->dir, etc). | |
3087 | */ | |
3088 | ||
4746118a JB |
3089 | #ifndef HAVE_RENAME |
3090 | ||
86a5659e | 3091 | rename (from, to) |
19c7afdf JB |
3092 | const char *from; |
3093 | const char *to; | |
86a5659e JB |
3094 | { |
3095 | if (access (from, 0) == 0) | |
3096 | { | |
3097 | unlink (to); | |
3098 | if (link (from, to) == 0) | |
3099 | if (unlink (from) == 0) | |
3100 | return (0); | |
3101 | } | |
3102 | return (-1); | |
3103 | } | |
3104 | ||
4746118a JB |
3105 | #endif |
3106 | ||
86a5659e JB |
3107 | |
3108 | #ifdef HPUX | |
3109 | #ifndef HAVE_PERROR | |
3110 | ||
3111 | /* HPUX curses library references perror, but as far as we know | |
3112 | it won't be called. Anyway this definition will do for now. */ | |
3113 | ||
3114 | perror () | |
3115 | { | |
3116 | } | |
3117 | ||
3118 | #endif /* not HAVE_PERROR */ | |
3119 | #endif /* HPUX */ | |
3120 | ||
3121 | #ifndef HAVE_DUP2 | |
3122 | ||
3123 | /* | |
3124 | * Emulate BSD dup2. First close newd if it already exists. | |
3125 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3126 | * until we are, then close the unsuccessful ones. | |
3127 | */ | |
3128 | ||
3129 | dup2 (oldd, newd) | |
3130 | int oldd; | |
3131 | int newd; | |
3132 | { | |
3133 | register int fd, ret; | |
3134 | ||
3135 | sys_close (newd); | |
3136 | ||
3137 | #ifdef F_DUPFD | |
3138 | fd = fcntl (oldd, F_DUPFD, newd); | |
3139 | if (fd != newd) | |
7088d1ca | 3140 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
86a5659e JB |
3141 | #else |
3142 | fd = dup (old); | |
3143 | if (fd == -1) | |
3144 | return -1; | |
3145 | if (fd == new) | |
3146 | return new; | |
3147 | ret = dup2 (old,new); | |
3148 | sys_close (fd); | |
3149 | return ret; | |
3150 | #endif | |
3151 | } | |
3152 | ||
3153 | #endif /* not HAVE_DUP2 */ | |
3154 | ||
3155 | /* | |
3156 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3157 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3158 | * Only needed when subprocesses are defined. | |
3159 | */ | |
3160 | ||
3161 | #ifdef subprocesses | |
3162 | #ifndef VMS | |
3163 | #ifndef HAVE_GETTIMEOFDAY | |
3164 | #ifdef HAVE_TIMEVAL | |
3165 | ||
3166 | /* ARGSUSED */ | |
3167 | gettimeofday (tp, tzp) | |
3168 | struct timeval *tp; | |
3169 | struct timezone *tzp; | |
3170 | { | |
3171 | extern long time (); | |
3172 | ||
3173 | tp->tv_sec = time ((long *)0); | |
3174 | tp->tv_usec = 0; | |
4ca7594f RS |
3175 | if (tzp != 0) |
3176 | tzp->tz_minuteswest = -1; | |
86a5659e JB |
3177 | } |
3178 | ||
3179 | #endif | |
3180 | #endif | |
3181 | #endif | |
3182 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3183 | ||
3184 | /* | |
3185 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3186 | */ | |
3187 | ||
3188 | croak (badfunc) | |
3189 | char *badfunc; | |
3190 | { | |
3191 | printf ("%s not yet implemented\r\n", badfunc); | |
3192 | reset_sys_modes (); | |
3193 | exit (1); | |
3194 | } | |
3195 | ||
3196 | #endif /* USG */ | |
3197 | \f | |
3198 | #ifdef DGUX | |
3199 | ||
3200 | char *sys_siglist[NSIG + 1] = | |
3201 | { | |
3202 | "null signal", /* 0 SIGNULL */ | |
3203 | "hangup", /* 1 SIGHUP */ | |
3204 | "interrupt", /* 2 SIGINT */ | |
3205 | "quit", /* 3 SIGQUIT */ | |
3206 | "illegal instruction", /* 4 SIGILL */ | |
3207 | "trace trap", /* 5 SIGTRAP */ | |
3208 | "abort termination", /* 6 SIGABRT */ | |
3209 | "SIGEMT", /* 7 SIGEMT */ | |
3210 | "floating point exception", /* 8 SIGFPE */ | |
3211 | "kill", /* 9 SIGKILL */ | |
3212 | "bus error", /* 10 SIGBUS */ | |
3213 | "segmentation violation", /* 11 SIGSEGV */ | |
3214 | "bad argument to system call", /* 12 SIGSYS */ | |
3215 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
3216 | "alarm clock", /* 14 SIGALRM */ | |
3217 | "software termination signal", /* 15 SIGTERM */ | |
3218 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3219 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3220 | "child stopped or terminated", /* 18 SIGCLD */ | |
3221 | "power-fail restart", /* 19 SIGPWR */ | |
3222 | "window size changed", /* 20 SIGWINCH */ | |
3223 | "undefined", /* 21 */ | |
eb8c3be9 | 3224 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
3225 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
3226 | "stop signal from tty", /* 24 SIGSTP */ | |
3227 | "continue a stopped process", /* 25 SIGCONT */ | |
3228 | "attempted background tty read", /* 26 SIGTTIN */ | |
3229 | "attempted background tty write", /* 27 SIGTTOU */ | |
3230 | "undefined", /* 28 */ | |
3231 | "undefined", /* 29 */ | |
3232 | "undefined", /* 30 */ | |
3233 | "undefined", /* 31 */ | |
3234 | "undefined", /* 32 */ | |
3235 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
3236 | "I/O is possible", /* 34 SIGIO */ | |
3237 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
3238 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
3239 | "virtual time alarm", /* 37 SIGVTALRM */ | |
3240 | "profiling time alarm", /* 38 SIGPROF */ | |
3241 | "undefined", /* 39 */ | |
3242 | "file record locks revoked", /* 40 SIGLOST */ | |
3243 | "undefined", /* 41 */ | |
3244 | "undefined", /* 42 */ | |
3245 | "undefined", /* 43 */ | |
3246 | "undefined", /* 44 */ | |
3247 | "undefined", /* 45 */ | |
3248 | "undefined", /* 46 */ | |
3249 | "undefined", /* 47 */ | |
3250 | "undefined", /* 48 */ | |
3251 | "undefined", /* 49 */ | |
3252 | "undefined", /* 50 */ | |
3253 | "undefined", /* 51 */ | |
3254 | "undefined", /* 52 */ | |
3255 | "undefined", /* 53 */ | |
3256 | "undefined", /* 54 */ | |
3257 | "undefined", /* 55 */ | |
3258 | "undefined", /* 56 */ | |
3259 | "undefined", /* 57 */ | |
3260 | "undefined", /* 58 */ | |
3261 | "undefined", /* 59 */ | |
3262 | "undefined", /* 60 */ | |
3263 | "undefined", /* 61 */ | |
3264 | "undefined", /* 62 */ | |
3265 | "undefined", /* 63 */ | |
3266 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
3267 | 0 | |
3268 | }; | |
3269 | ||
3270 | #endif /* DGUX */ | |
3271 | \f | |
3272 | /* Directory routines for systems that don't have them. */ | |
3273 | ||
3274 | #ifdef SYSV_SYSTEM_DIR | |
3275 | ||
3276 | #include <dirent.h> | |
3277 | ||
1db6401c | 3278 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
cfdc57af | 3279 | |
86a5659e JB |
3280 | int |
3281 | closedir (dirp) | |
3282 | register DIR *dirp; /* stream from opendir */ | |
3283 | { | |
cfdc57af RS |
3284 | int rtnval; |
3285 | ||
3286 | rtnval = sys_close (dirp->dd_fd); | |
1b929d25 | 3287 | |
65aa44ac JB |
3288 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3289 | in one block. Why in the world are we freeing this ourselves | |
3290 | anyway? */ | |
3291 | #if ! (defined (sun) && defined (USG5_4)) | |
3292 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3293 | #endif | |
9ac0d9e0 | 3294 | xfree ((char *) dirp); |
cfdc57af RS |
3295 | |
3296 | return rtnval; | |
86a5659e | 3297 | } |
1db6401c | 3298 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3299 | #endif /* SYSV_SYSTEM_DIR */ |
3300 | ||
3301 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3302 | ||
3303 | DIR * | |
3304 | opendir (filename) | |
3305 | char *filename; /* name of directory */ | |
3306 | { | |
3307 | register DIR *dirp; /* -> malloc'ed storage */ | |
3308 | register int fd; /* file descriptor for read */ | |
3309 | struct stat sbuf; /* result of fstat */ | |
3310 | ||
3311 | fd = sys_open (filename, 0); | |
3312 | if (fd < 0) | |
3313 | return 0; | |
3314 | ||
9ac0d9e0 | 3315 | BLOCK_INPUT; |
86a5659e JB |
3316 | if (fstat (fd, &sbuf) < 0 |
3317 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3318 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3319 | { | |
3320 | sys_close (fd); | |
9ac0d9e0 | 3321 | UNBLOCK_INPUT; |
86a5659e JB |
3322 | return 0; /* bad luck today */ |
3323 | } | |
9ac0d9e0 | 3324 | UNBLOCK_INPUT; |
86a5659e JB |
3325 | |
3326 | dirp->dd_fd = fd; | |
3327 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3328 | ||
3329 | return dirp; | |
3330 | } | |
3331 | ||
3332 | void | |
3333 | closedir (dirp) | |
3334 | register DIR *dirp; /* stream from opendir */ | |
3335 | { | |
3336 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 3337 | xfree ((char *) dirp); |
86a5659e JB |
3338 | } |
3339 | ||
3340 | ||
3341 | #ifndef VMS | |
3342 | #define DIRSIZ 14 | |
3343 | struct olddir | |
3344 | { | |
3345 | ino_t od_ino; /* inode */ | |
3346 | char od_name[DIRSIZ]; /* filename */ | |
3347 | }; | |
3348 | #endif /* not VMS */ | |
3349 | ||
3350 | struct direct dir_static; /* simulated directory contents */ | |
3351 | ||
3352 | /* ARGUSED */ | |
3353 | struct direct * | |
3354 | readdir (dirp) | |
3355 | register DIR *dirp; /* stream from opendir */ | |
3356 | { | |
3357 | #ifndef VMS | |
3358 | register struct olddir *dp; /* -> directory data */ | |
3359 | #else /* VMS */ | |
3360 | register struct dir$_name *dp; /* -> directory data */ | |
3361 | register struct dir$_version *dv; /* -> version data */ | |
3362 | #endif /* VMS */ | |
3363 | ||
3364 | for (; ;) | |
3365 | { | |
3366 | if (dirp->dd_loc >= dirp->dd_size) | |
3367 | dirp->dd_loc = dirp->dd_size = 0; | |
3368 | ||
3369 | if (dirp->dd_size == 0 /* refill buffer */ | |
3370 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3371 | return 0; | |
3372 | ||
3373 | #ifndef VMS | |
3374 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3375 | dirp->dd_loc += sizeof (struct olddir); | |
3376 | ||
3377 | if (dp->od_ino != 0) /* not deleted entry */ | |
3378 | { | |
3379 | dir_static.d_ino = dp->od_ino; | |
3380 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3381 | dir_static.d_name[DIRSIZ] = '\0'; | |
3382 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3383 | dir_static.d_reclen = sizeof (struct direct) | |
3384 | - MAXNAMLEN + 3 | |
3385 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3386 | return &dir_static; /* -> simulated structure */ | |
3387 | } | |
3388 | #else /* VMS */ | |
3389 | dp = (struct dir$_name *) dirp->dd_buf; | |
3390 | if (dirp->dd_loc == 0) | |
3391 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3392 | : dp->dir$b_namecount; | |
3393 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3394 | dir_static.d_ino = dv->dir$w_fid_num; | |
3395 | dir_static.d_namlen = dp->dir$b_namecount; | |
3396 | dir_static.d_reclen = sizeof (struct direct) | |
3397 | - MAXNAMLEN + 3 | |
3398 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3399 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3400 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3401 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3402 | return &dir_static; | |
3403 | #endif /* VMS */ | |
3404 | } | |
3405 | } | |
3406 | ||
3407 | #ifdef VMS | |
3408 | /* readdirver is just like readdir except it returns all versions of a file | |
3409 | as separate entries. */ | |
3410 | ||
3411 | /* ARGUSED */ | |
3412 | struct direct * | |
3413 | readdirver (dirp) | |
3414 | register DIR *dirp; /* stream from opendir */ | |
3415 | { | |
3416 | register struct dir$_name *dp; /* -> directory data */ | |
3417 | register struct dir$_version *dv; /* -> version data */ | |
3418 | ||
3419 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3420 | dirp->dd_loc = dirp->dd_size = 0; | |
3421 | ||
3422 | if (dirp->dd_size == 0 /* refill buffer */ | |
3423 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3424 | return 0; | |
3425 | ||
3426 | dp = (struct dir$_name *) dirp->dd_buf; | |
3427 | if (dirp->dd_loc == 0) | |
3428 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3429 | : dp->dir$b_namecount; | |
3430 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3431 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3432 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3433 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3434 | dir_static.d_ino = dv->dir$w_fid_num; | |
3435 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3436 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3437 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3438 | return &dir_static; | |
3439 | } | |
3440 | ||
3441 | #endif /* VMS */ | |
3442 | ||
3443 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3444 | |
3445 | \f | |
53ea491a | 3446 | int |
061ea326 | 3447 | set_file_times (filename, atime, mtime) |
8334eb21 | 3448 | char *filename; |
53ea491a KH |
3449 | EMACS_TIME atime, mtime; |
3450 | { | |
3451 | #ifdef HAVE_UTIMES | |
3452 | struct timeval tv[2]; | |
3453 | tv[0] = atime; | |
3454 | tv[1] = mtime; | |
8334eb21 RS |
3455 | return utimes (filename, tv); |
3456 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
3457 | struct utimbuf utb; |
3458 | utb.actime = EMACS_SECS (atime); | |
3459 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
3460 | return utime (filename, &utb); |
3461 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
3462 | } |
3463 | \f | |
23524fb9 JB |
3464 | /* mkdir and rmdir functions, for systems which don't have them. */ |
3465 | ||
3466 | #ifndef HAVE_MKDIR | |
3467 | /* | |
3468 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3469 | * | |
3470 | * If you want it, it's yours. All I ask in return is that if you | |
3471 | * figure out how to do this in a Bourne Shell script you send me | |
3472 | * a copy. | |
3473 | * sdcsvax!rmr or rmr@uscd | |
3474 | * | |
3475 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3476 | * subroutine. 11Mar86; hoptoad!gnu | |
3477 | * | |
3478 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3479 | * subroutine didn't return EEXIST. It does now. | |
3480 | */ | |
3481 | ||
3482 | /* | |
3483 | * Make a directory. | |
3484 | */ | |
f3892946 RS |
3485 | #ifdef MKDIR_PROTOTYPE |
3486 | MKDIR_PROTOTYPE | |
3487 | #else | |
23524fb9 JB |
3488 | int |
3489 | mkdir (dpath, dmode) | |
3490 | char *dpath; | |
3491 | int dmode; | |
f3892946 | 3492 | #endif |
23524fb9 | 3493 | { |
039f26a4 | 3494 | int cpid, status, fd; |
23524fb9 JB |
3495 | struct stat statbuf; |
3496 | ||
3497 | if (stat (dpath, &statbuf) == 0) | |
3498 | { | |
3499 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3500 | return -1; | |
3501 | } | |
3502 | ||
3503 | /* If stat fails for a reason other than non-existence, return error */ | |
3504 | if (errno != ENOENT) | |
3505 | return -1; | |
3506 | ||
039f26a4 | 3507 | synch_process_alive = 1; |
23524fb9 JB |
3508 | switch (cpid = fork ()) |
3509 | { | |
3510 | ||
039f26a4 | 3511 | case -1: /* Error in fork */ |
23524fb9 JB |
3512 | return (-1); /* Errno is set already */ |
3513 | ||
3514 | case 0: /* Child process */ | |
3515 | /* | |
3516 | * Cheap hack to set mode of new directory. Since this | |
3517 | * child process is going away anyway, we zap its umask. | |
3518 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3519 | * directory. Does anybody care? | |
3520 | */ | |
3521 | status = umask (0); /* Get current umask */ | |
3522 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3523 | fd = sys_open("/dev/null", 2); |
3524 | if (fd >= 0) | |
3525 | { | |
3526 | dup2 (fd, 0); | |
3527 | dup2 (fd, 1); | |
3528 | dup2 (fd, 2); | |
3529 | } | |
23524fb9 JB |
3530 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3531 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3532 | ||
3533 | default: /* Parent process */ | |
039f26a4 | 3534 | wait_for_termination (cpid); |
23524fb9 JB |
3535 | } |
3536 | ||
039f26a4 | 3537 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3538 | { |
3539 | errno = EIO; /* We don't know why, but */ | |
3540 | return -1; /* /bin/mkdir failed */ | |
3541 | } | |
3542 | ||
3543 | return 0; | |
3544 | } | |
3545 | #endif /* not HAVE_MKDIR */ | |
3546 | ||
3547 | #ifndef HAVE_RMDIR | |
3548 | int | |
3549 | rmdir (dpath) | |
3550 | char *dpath; | |
3551 | { | |
039f26a4 | 3552 | int cpid, status, fd; |
23524fb9 JB |
3553 | struct stat statbuf; |
3554 | ||
3555 | if (stat (dpath, &statbuf) != 0) | |
3556 | { | |
3557 | /* Stat just set errno. We don't have to */ | |
3558 | return -1; | |
3559 | } | |
3560 | ||
039f26a4 | 3561 | synch_process_alive = 1; |
23524fb9 JB |
3562 | switch (cpid = fork ()) |
3563 | { | |
3564 | ||
039f26a4 | 3565 | case -1: /* Error in fork */ |
23524fb9 JB |
3566 | return (-1); /* Errno is set already */ |
3567 | ||
3568 | case 0: /* Child process */ | |
039f26a4 RS |
3569 | fd = sys_open("/dev/null", 2); |
3570 | if (fd >= 0) | |
3571 | { | |
3572 | dup2 (fd, 0); | |
3573 | dup2 (fd, 1); | |
3574 | dup2 (fd, 2); | |
3575 | } | |
039f26a4 | 3576 | wait_for_termination (cpid); |
207bdbdb RS |
3577 | if (synch_process_death != 0 || synch_process_retcode != 0) |
3578 | return -1; /* /bin/rmdir failed */ | |
3579 | default: /* Parent process */ | |
3580 | while (cpid != wait (&status)); /* Wait for kid to finish */ | |
23524fb9 JB |
3581 | } |
3582 | ||
207bdbdb | 3583 | if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0) |
23524fb9 JB |
3584 | { |
3585 | errno = EIO; /* We don't know why, but */ | |
207bdbdb | 3586 | return -1; /* /bin/mkdir failed */ |
23524fb9 JB |
3587 | } |
3588 | ||
3589 | return 0; | |
3590 | } | |
3591 | #endif /* !HAVE_RMDIR */ | |
3592 | ||
3593 | ||
86a5659e JB |
3594 | \f |
3595 | /* Functions for VMS */ | |
3596 | #ifdef VMS | |
91bac16a | 3597 | #include "vms-pwd.h" |
86a5659e JB |
3598 | #include <acldef.h> |
3599 | #include <chpdef.h> | |
3600 | #include <jpidef.h> | |
3601 | ||
3602 | /* Return as a string the VMS error string pertaining to STATUS. | |
3603 | Reuses the same static buffer each time it is called. */ | |
3604 | ||
3605 | char * | |
3606 | vmserrstr (status) | |
3607 | int status; /* VMS status code */ | |
3608 | { | |
3609 | int bufadr[2]; | |
3610 | short len; | |
3611 | static char buf[257]; | |
3612 | ||
3613 | bufadr[0] = sizeof buf - 1; | |
3614 | bufadr[1] = (int) buf; | |
3615 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3616 | return "untranslatable VMS error status"; | |
3617 | buf[len] = '\0'; | |
3618 | return buf; | |
3619 | } | |
3620 | ||
3621 | #ifdef access | |
3622 | #undef access | |
3623 | ||
3624 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3625 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3626 | */ | |
3627 | ||
3628 | #ifdef VMS4_4 | |
3629 | ||
3630 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3631 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3632 | ||
3633 | typedef union { | |
3634 | struct { | |
3635 | unsigned short s_buflen; | |
3636 | unsigned short s_code; | |
3637 | char *s_bufadr; | |
3638 | unsigned short *s_retlenadr; | |
3639 | } s; | |
3640 | int end; | |
3641 | } item; | |
3642 | #define buflen s.s_buflen | |
3643 | #define code s.s_code | |
3644 | #define bufadr s.s_bufadr | |
3645 | #define retlenadr s.s_retlenadr | |
3646 | ||
3647 | #define R_OK 4 /* test for read permission */ | |
3648 | #define W_OK 2 /* test for write permission */ | |
3649 | #define X_OK 1 /* test for execute (search) permission */ | |
3650 | #define F_OK 0 /* test for presence of file */ | |
3651 | ||
3652 | int | |
3653 | sys_access (path, mode) | |
3654 | char *path; | |
3655 | int mode; | |
3656 | { | |
3657 | static char *user = NULL; | |
3658 | char dir_fn[512]; | |
3659 | ||
3660 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3661 | * access can treat the directory like a file. */ | |
3662 | if (directory_file_name (path, dir_fn)) | |
3663 | path = dir_fn; | |
3664 | ||
3665 | if (mode == F_OK) | |
3666 | return access (path, mode); | |
3667 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3668 | return -1; | |
3669 | { | |
3670 | int stat; | |
3671 | int flags; | |
3672 | int acces; | |
3673 | unsigned short int dummy; | |
3674 | item itemlst[3]; | |
3675 | static int constant = ACL$C_FILE; | |
3676 | DESCRIPTOR (path_desc, path); | |
3677 | DESCRIPTOR (user_desc, user); | |
3678 | ||
3679 | flags = 0; | |
3680 | acces = 0; | |
3681 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3682 | return stat; | |
3683 | if (mode & R_OK) | |
3684 | acces |= CHP$M_READ; | |
3685 | if (mode & W_OK) | |
3686 | acces |= CHP$M_WRITE; | |
3687 | itemlst[0].buflen = sizeof (int); | |
3688 | itemlst[0].code = CHP$_FLAGS; | |
3689 | itemlst[0].bufadr = (char *) &flags; | |
3690 | itemlst[0].retlenadr = &dummy; | |
3691 | itemlst[1].buflen = sizeof (int); | |
3692 | itemlst[1].code = CHP$_ACCESS; | |
3693 | itemlst[1].bufadr = (char *) &acces; | |
3694 | itemlst[1].retlenadr = &dummy; | |
3695 | itemlst[2].end = CHP$_END; | |
3696 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3697 | return stat == SS$_NORMAL ? 0 : -1; | |
3698 | } | |
3699 | } | |
3700 | ||
3701 | #else /* not VMS4_4 */ | |
3702 | ||
3703 | #include <prvdef.h> | |
fe03522b RS |
3704 | #define ACE$M_WRITE 2 |
3705 | #define ACE$C_KEYID 1 | |
86a5659e JB |
3706 | |
3707 | static unsigned short memid, grpid; | |
3708 | static unsigned int uic; | |
3709 | ||
3710 | /* Called from init_sys_modes, so it happens not very often | |
3711 | but at least each time Emacs is loaded. */ | |
3712 | sys_access_reinit () | |
3713 | { | |
3714 | uic = 0; | |
3715 | } | |
3716 | ||
3717 | int | |
3718 | sys_access (filename, type) | |
3719 | char * filename; | |
3720 | int type; | |
3721 | { | |
3722 | struct FAB fab; | |
3723 | struct XABPRO xab; | |
3724 | int status, size, i, typecode, acl_controlled; | |
3725 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3726 | union prvdef prvmask; | |
3727 | ||
3728 | /* Get UIC and GRP values for protection checking. */ | |
3729 | if (uic == 0) | |
3730 | { | |
3731 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3732 | if (! (status & 1)) | |
3733 | return -1; | |
3734 | memid = uic & 0xFFFF; | |
3735 | grpid = uic >> 16; | |
3736 | } | |
3737 | ||
fe03522b | 3738 | if (type != 2) /* not checking write access */ |
86a5659e JB |
3739 | return access (filename, type); |
3740 | ||
3741 | /* Check write protection. */ | |
3742 | ||
fe03522b RS |
3743 | #define CHECKPRIV(bit) (prvmask.bit) |
3744 | #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) | |
86a5659e JB |
3745 | |
3746 | /* Find privilege bits */ | |
986ffb24 | 3747 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3748 | if (! (status & 1)) |
3749 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3750 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3751 | return 0; /* BYPASS enabled */ | |
3752 | fab = cc$rms_fab; | |
3753 | fab.fab$b_fac = FAB$M_GET; | |
3754 | fab.fab$l_fna = filename; | |
3755 | fab.fab$b_fns = strlen (filename); | |
3756 | fab.fab$l_xab = &xab; | |
3757 | xab = cc$rms_xabpro; | |
3758 | xab.xab$l_aclbuf = aclbuf; | |
3759 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3760 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3761 | if (! (status & 1)) |
3762 | return -1; | |
986ffb24 | 3763 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3764 | /* Check system access */ |
3765 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS)) | |
3766 | return 0; | |
3767 | /* Check ACL entries, if any */ | |
3768 | acl_controlled = 0; | |
3769 | if (xab.xab$w_acllen > 0) | |
3770 | { | |
3771 | aclptr = aclbuf; | |
3772 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3773 | while (*aclptr && aclptr < aclend) | |
3774 | { | |
3775 | size = (*aclptr & 0xff) / 4; | |
3776 | typecode = (*aclptr >> 8) & 0xff; | |
3777 | if (typecode == ACE$C_KEYID) | |
3778 | for (i = size - 1; i > 1; i--) | |
3779 | if (aclptr[i] == uic) | |
3780 | { | |
3781 | acl_controlled = 1; | |
3782 | if (aclptr[1] & ACE$M_WRITE) | |
3783 | return 0; /* Write access through ACL */ | |
3784 | } | |
3785 | aclptr = &aclptr[size]; | |
3786 | } | |
3787 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3788 | return -1; | |
3789 | } | |
3790 | /* No ACL entries specified, check normal protection */ | |
3791 | if (WRITEABLE (XAB$V_WLD)) /* World writeable */ | |
3792 | return 0; | |
3793 | if (WRITEABLE (XAB$V_GRP) && | |
3794 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) | |
3795 | return 0; /* Group writeable */ | |
3796 | if (WRITEABLE (XAB$V_OWN) && | |
3797 | (xab.xab$l_uic & 0xFFFF) == memid) | |
3798 | return 0; /* Owner writeable */ | |
3799 | ||
3800 | return -1; /* Not writeable */ | |
3801 | } | |
3802 | #endif /* not VMS4_4 */ | |
3803 | #endif /* access */ | |
3804 | ||
3805 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3806 | ||
3807 | /* translate a vms file spec to a unix path */ | |
3808 | char * | |
3809 | sys_translate_vms (vfile) | |
3810 | char * vfile; | |
3811 | { | |
3812 | char * p; | |
3813 | char * targ; | |
3814 | ||
3815 | if (!vfile) | |
3816 | return 0; | |
3817 | ||
3818 | targ = vtbuf; | |
3819 | ||
3820 | /* leading device or logical name is a root directory */ | |
3821 | if (p = strchr (vfile, ':')) | |
3822 | { | |
3823 | *targ++ = '/'; | |
3824 | while (vfile < p) | |
3825 | *targ++ = *vfile++; | |
3826 | vfile++; | |
3827 | *targ++ = '/'; | |
3828 | } | |
3829 | p = vfile; | |
3830 | if (*p == '[' || *p == '<') | |
3831 | { | |
3832 | while (*++vfile != *p + 2) | |
3833 | switch (*vfile) | |
3834 | { | |
3835 | case '.': | |
3836 | if (vfile[-1] == *p) | |
3837 | *targ++ = '.'; | |
3838 | *targ++ = '/'; | |
3839 | break; | |
3840 | ||
3841 | case '-': | |
3842 | *targ++ = '.'; | |
3843 | *targ++ = '.'; | |
3844 | break; | |
3845 | ||
3846 | default: | |
3847 | *targ++ = *vfile; | |
3848 | break; | |
3849 | } | |
3850 | vfile++; | |
3851 | *targ++ = '/'; | |
3852 | } | |
3853 | while (*vfile) | |
3854 | *targ++ = *vfile++; | |
3855 | ||
3856 | return vtbuf; | |
3857 | } | |
3858 | ||
3859 | static char utbuf[NAM$C_MAXRSS+1]; | |
3860 | ||
3861 | /* translate a unix path to a VMS file spec */ | |
3862 | char * | |
3863 | sys_translate_unix (ufile) | |
3864 | char * ufile; | |
3865 | { | |
3866 | int slash_seen = 0; | |
3867 | char *p; | |
3868 | char * targ; | |
3869 | ||
3870 | if (!ufile) | |
3871 | return 0; | |
3872 | ||
3873 | targ = utbuf; | |
3874 | ||
3875 | if (*ufile == '/') | |
3876 | { | |
3877 | ufile++; | |
3878 | } | |
3879 | ||
3880 | while (*ufile) | |
3881 | { | |
3882 | switch (*ufile) | |
3883 | { | |
3884 | case '/': | |
3885 | if (slash_seen) | |
3886 | if (index (&ufile[1], '/')) | |
3887 | *targ++ = '.'; | |
3888 | else | |
3889 | *targ++ = ']'; | |
3890 | else | |
3891 | { | |
3892 | *targ++ = ':'; | |
3893 | if (index (&ufile[1], '/')) | |
3894 | *targ++ = '['; | |
3895 | slash_seen = 1; | |
3896 | } | |
3897 | break; | |
3898 | ||
3899 | case '.': | |
3900 | if (strncmp (ufile, "./", 2) == 0) | |
3901 | { | |
3902 | if (!slash_seen) | |
3903 | { | |
3904 | *targ++ = '['; | |
3905 | slash_seen = 1; | |
3906 | } | |
3907 | ufile++; /* skip the dot */ | |
3908 | if (index (&ufile[1], '/')) | |
3909 | *targ++ = '.'; | |
3910 | else | |
3911 | *targ++ = ']'; | |
3912 | } | |
3913 | else if (strncmp (ufile, "../", 3) == 0) | |
3914 | { | |
3915 | if (!slash_seen) | |
3916 | { | |
3917 | *targ++ = '['; | |
3918 | slash_seen = 1; | |
3919 | } | |
3920 | *targ++ = '-'; | |
3921 | ufile += 2; /* skip the dots */ | |
3922 | if (index (&ufile[1], '/')) | |
3923 | *targ++ = '.'; | |
3924 | else | |
3925 | *targ++ = ']'; | |
3926 | } | |
3927 | else | |
3928 | *targ++ = *ufile; | |
3929 | break; | |
3930 | ||
3931 | default: | |
3932 | *targ++ = *ufile; | |
3933 | break; | |
3934 | } | |
3935 | ufile++; | |
3936 | } | |
3937 | *targ = '\0'; | |
3938 | ||
3939 | return utbuf; | |
3940 | } | |
3941 | ||
3942 | char * | |
3943 | getwd (pathname) | |
3944 | char *pathname; | |
3945 | { | |
f4a7e5bd | 3946 | char *ptr, *val; |
210b2b4f | 3947 | extern char *getcwd (); |
86a5659e | 3948 | |
210b2b4f JB |
3949 | #define MAXPATHLEN 1024 |
3950 | ||
9ac0d9e0 | 3951 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
3952 | val = getcwd (ptr, MAXPATHLEN); |
3953 | if (val == 0) | |
3954 | { | |
3955 | xfree (ptr); | |
3956 | return val; | |
3957 | } | |
210b2b4f | 3958 | strcpy (pathname, ptr); |
9ac0d9e0 | 3959 | xfree (ptr); |
210b2b4f JB |
3960 | |
3961 | return pathname; | |
86a5659e JB |
3962 | } |
3963 | ||
3964 | getppid () | |
3965 | { | |
3966 | long item_code = JPI$_OWNER; | |
3967 | unsigned long parent_id; | |
3968 | int status; | |
3969 | ||
3970 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
3971 | { | |
3972 | errno = EVMSERR; | |
3973 | vaxc$errno = status; | |
3974 | return -1; | |
3975 | } | |
3976 | return parent_id; | |
3977 | } | |
3978 | ||
3979 | #undef getuid | |
3980 | unsigned | |
3981 | sys_getuid () | |
3982 | { | |
3983 | return (getgid () << 16) | getuid (); | |
3984 | } | |
3985 | ||
3986 | int | |
3987 | sys_read (fildes, buf, nbyte) | |
3988 | int fildes; | |
3989 | char *buf; | |
3990 | unsigned int nbyte; | |
3991 | { | |
3992 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
3993 | } | |
3994 | ||
3995 | #if 0 | |
3996 | int | |
3997 | sys_write (fildes, buf, nbyte) | |
3998 | int fildes; | |
3999 | char *buf; | |
4000 | unsigned int nbyte; | |
4001 | { | |
4002 | register int nwrote, rtnval = 0; | |
4003 | ||
4004 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
4005 | nbyte -= nwrote; | |
4006 | buf += nwrote; | |
4007 | rtnval += nwrote; | |
4008 | } | |
4009 | if (nwrote < 0) | |
4010 | return rtnval ? rtnval : -1; | |
4011 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
4012 | return rtnval ? rtnval : -1; | |
4013 | return (rtnval + nwrote); | |
4014 | } | |
4015 | #endif /* 0 */ | |
4016 | ||
4017 | /* | |
4018 | * VAX/VMS VAX C RTL really loses. It insists that records | |
4019 | * end with a newline (carriage return) character, and if they | |
4020 | * don't it adds one (nice of it isn't it!) | |
4021 | * | |
4022 | * Thus we do this stupidity below. | |
4023 | */ | |
4024 | ||
4025 | int | |
4026 | sys_write (fildes, buf, nbytes) | |
4027 | int fildes; | |
4028 | char *buf; | |
4029 | unsigned int nbytes; | |
4030 | { | |
4031 | register char *p; | |
4032 | register char *e; | |
23b0668c JB |
4033 | int sum = 0; |
4034 | struct stat st; | |
4035 | ||
4036 | fstat (fildes, &st); | |
86a5659e | 4037 | p = buf; |
86a5659e JB |
4038 | while (nbytes > 0) |
4039 | { | |
23b0668c JB |
4040 | int len, retval; |
4041 | ||
4042 | /* Handle fixed-length files with carriage control. */ | |
4043 | if (st.st_fab_rfm == FAB$C_FIX | |
4044 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
4045 | { | |
4046 | len = st.st_fab_mrs; | |
4047 | retval = write (fildes, p, min (len, nbytes)); | |
4048 | if (retval != len) | |
4049 | return -1; | |
4050 | retval++; /* This skips the implied carriage control */ | |
4051 | } | |
4052 | else | |
4053 | { | |
4054 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4055 | while (*e != '\n' && e > p) e--; | |
4056 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
4057 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
4058 | len = e + 1 - p; | |
4059 | retval = write (fildes, p, len); | |
4060 | if (retval != len) | |
4061 | return -1; | |
4062 | } | |
4063 | p += retval; | |
4064 | sum += retval; | |
86a5659e JB |
4065 | nbytes -= retval; |
4066 | } | |
4067 | return sum; | |
4068 | } | |
4069 | ||
4070 | /* Create file NEW copying its attributes from file OLD. If | |
4071 | OLD is 0 or does not exist, create based on the value of | |
4072 | vms_stmlf_recfm. */ | |
4073 | ||
4074 | /* Protection value the file should ultimately have. | |
4075 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
4076 | static unsigned short int fab_final_pro; | |
4077 | ||
4078 | int | |
4079 | creat_copy_attrs (old, new) | |
4080 | char *old, *new; | |
4081 | { | |
4082 | struct FAB fab = cc$rms_fab; | |
4083 | struct XABPRO xabpro; | |
4084 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4085 | extern int vms_stmlf_recfm; | |
4086 | ||
4087 | if (old) | |
4088 | { | |
4089 | fab.fab$b_fac = FAB$M_GET; | |
4090 | fab.fab$l_fna = old; | |
4091 | fab.fab$b_fns = strlen (old); | |
4092 | fab.fab$l_xab = (char *) &xabpro; | |
4093 | xabpro = cc$rms_xabpro; | |
4094 | xabpro.xab$l_aclbuf = aclbuf; | |
4095 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4096 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4097 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4098 | { |
986ffb24 | 4099 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4100 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4101 | if (xabpro.xab$w_acllen > 0) | |
4102 | { | |
4103 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4104 | /* If the acl buffer was too short, redo open with longer one. | |
4105 | Wouldn't need to do this if there were some system imposed | |
4106 | limit on the size of an ACL, but I can't find any such. */ | |
4107 | { | |
4108 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4109 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4110 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4111 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4112 | else |
4113 | old = 0; | |
4114 | } | |
4115 | } | |
4116 | else | |
4117 | xabpro.xab$l_aclbuf = 0; | |
4118 | } | |
4119 | else | |
4120 | old = 0; | |
4121 | } | |
4122 | fab.fab$l_fna = new; | |
4123 | fab.fab$b_fns = strlen (new); | |
4124 | if (!old) | |
4125 | { | |
4126 | fab.fab$l_xab = 0; | |
4127 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4128 | fab.fab$b_rat = FAB$M_CR; | |
4129 | } | |
4130 | ||
4131 | /* Set the file protections such that we will be able to manipulate | |
4132 | this file. Once we are done writing and renaming it, we will set | |
4133 | the protections back. */ | |
4134 | if (old) | |
4135 | fab_final_pro = xabpro.xab$w_pro; | |
4136 | else | |
986ffb24 | 4137 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4138 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4139 | ||
4140 | /* Create the new file with either default attrs or attrs copied | |
4141 | from old file. */ | |
4142 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4143 | return -1; | |
986ffb24 | 4144 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4145 | /* As this is a "replacement" for creat, return a file descriptor |
4146 | opened for writing. */ | |
4147 | return open (new, O_WRONLY); | |
4148 | } | |
4149 | ||
4150 | #ifdef creat | |
4151 | #undef creat | |
4152 | #include <varargs.h> | |
4153 | #ifdef __GNUC__ | |
4154 | #ifndef va_count | |
4155 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4156 | #endif | |
4157 | #endif | |
4158 | ||
4159 | sys_creat (va_alist) | |
4160 | va_dcl | |
4161 | { | |
eb8c3be9 | 4162 | va_list list_incrementer; |
86a5659e JB |
4163 | char *name; |
4164 | int mode; | |
4165 | int rfd; /* related file descriptor */ | |
4166 | int fd; /* Our new file descriptor */ | |
4167 | int count; | |
4168 | struct stat st_buf; | |
4169 | char rfm[12]; | |
4170 | char rat[15]; | |
4171 | char mrs[13]; | |
4172 | char fsz[13]; | |
4173 | extern int vms_stmlf_recfm; | |
4174 | ||
4175 | va_count (count); | |
eb8c3be9 JB |
4176 | va_start (list_incrementer); |
4177 | name = va_arg (list_incrementer, char *); | |
4178 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4179 | if (count > 2) |
eb8c3be9 JB |
4180 | rfd = va_arg (list_incrementer, int); |
4181 | va_end (list_incrementer); | |
86a5659e JB |
4182 | if (count > 2) |
4183 | { | |
4184 | /* Use information from the related file descriptor to set record | |
4185 | format of the newly created file. */ | |
4186 | fstat (rfd, &st_buf); | |
4187 | switch (st_buf.st_fab_rfm) | |
4188 | { | |
4189 | case FAB$C_FIX: | |
4190 | strcpy (rfm, "rfm = fix"); | |
4191 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4192 | strcpy (rat, "rat = "); | |
4193 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4194 | strcat (rat, "cr"); | |
4195 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4196 | strcat (rat, "ftn"); | |
4197 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4198 | strcat (rat, "prn"); | |
4199 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4200 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4201 | strcat (rat, ", blk"); | |
4202 | else | |
4203 | strcat (rat, "blk"); | |
4204 | return creat (name, 0, rfm, rat, mrs); | |
4205 | ||
4206 | case FAB$C_VFC: | |
4207 | strcpy (rfm, "rfm = vfc"); | |
4208 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4209 | strcpy (rat, "rat = "); | |
4210 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4211 | strcat (rat, "cr"); | |
4212 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4213 | strcat (rat, "ftn"); | |
4214 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4215 | strcat (rat, "prn"); | |
4216 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4217 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4218 | strcat (rat, ", blk"); | |
4219 | else | |
4220 | strcat (rat, "blk"); | |
4221 | return creat (name, 0, rfm, rat, fsz); | |
4222 | ||
4223 | case FAB$C_STM: | |
4224 | strcpy (rfm, "rfm = stm"); | |
4225 | break; | |
4226 | ||
4227 | case FAB$C_STMCR: | |
4228 | strcpy (rfm, "rfm = stmcr"); | |
4229 | break; | |
4230 | ||
4231 | case FAB$C_STMLF: | |
4232 | strcpy (rfm, "rfm = stmlf"); | |
4233 | break; | |
4234 | ||
4235 | case FAB$C_UDF: | |
4236 | strcpy (rfm, "rfm = udf"); | |
4237 | break; | |
4238 | ||
4239 | case FAB$C_VAR: | |
4240 | strcpy (rfm, "rfm = var"); | |
4241 | break; | |
4242 | } | |
4243 | strcpy (rat, "rat = "); | |
4244 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4245 | strcat (rat, "cr"); | |
4246 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4247 | strcat (rat, "ftn"); | |
4248 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4249 | strcat (rat, "prn"); | |
4250 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4251 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4252 | strcat (rat, ", blk"); | |
4253 | else | |
4254 | strcat (rat, "blk"); | |
4255 | } | |
4256 | else | |
4257 | { | |
4258 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4259 | strcpy (rat, "rat=cr"); | |
4260 | } | |
4261 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4262 | mode 0 to get the user's default protection. */ | |
4263 | fd = creat (name, 0, rfm, rat); | |
4264 | if (fd < 0 && errno == EEXIST) | |
4265 | { | |
4266 | if (unlink (name) < 0) | |
4267 | report_file_error ("delete", build_string (name)); | |
4268 | fd = creat (name, 0, rfm, rat); | |
4269 | } | |
4270 | return fd; | |
4271 | } | |
4272 | #endif /* creat */ | |
4273 | ||
4274 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
4275 | sys_fwrite (ptr, size, num, fp) | |
4276 | register char * ptr; | |
4277 | FILE * fp; | |
4278 | { | |
4279 | register int tot = num * size; | |
4280 | ||
4281 | while (tot--) | |
4282 | fputc (*ptr++, fp); | |
4283 | } | |
4284 | ||
4285 | /* | |
4286 | * The VMS C library routine creat actually creates a new version of an | |
4287 | * existing file rather than truncating the old version. There are times | |
4288 | * when this is not the desired behavior, for instance, when writing an | |
4289 | * auto save file (you only want one version), or when you don't have | |
4290 | * write permission in the directory containing the file (but the file | |
4291 | * itself is writable). Hence this routine, which is equivalent to | |
4292 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4293 | */ | |
4294 | int | |
4295 | vms_truncate (fn) | |
4296 | char *fn; | |
4297 | { | |
4298 | struct FAB xfab = cc$rms_fab; | |
4299 | struct RAB xrab = cc$rms_rab; | |
4300 | int status; | |
4301 | ||
4302 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4303 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4304 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4305 | xfab.fab$l_fna = fn; | |
4306 | xfab.fab$b_fns = strlen (fn); | |
4307 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4308 | xfab.fab$b_dns = 2; | |
4309 | xrab.rab$l_fab = &xfab; | |
4310 | ||
4311 | /* This gibberish opens the file, positions to the first record, and | |
4312 | deletes all records from there until the end of file. */ | |
986ffb24 | 4313 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4314 | { |
986ffb24 JB |
4315 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4316 | (SYS$FIND (&xrab) & 01) == 01 && | |
4317 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4318 | status = 0; |
4319 | else | |
4320 | status = -1; | |
4321 | } | |
4322 | else | |
4323 | status = -1; | |
986ffb24 | 4324 | SYS$CLOSE (&xfab); |
86a5659e JB |
4325 | return status; |
4326 | } | |
4327 | ||
4328 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4329 | SYSPRV or a readable SYSUAF.DAT. */ | |
4330 | ||
4331 | #ifdef READ_SYSUAF | |
4332 | /* | |
4333 | * getuaf.c | |
4334 | * | |
4335 | * Routine to read the VMS User Authorization File and return | |
4336 | * a specific user's record. | |
4337 | */ | |
4338 | ||
4339 | static struct UAF retuaf; | |
4340 | ||
4341 | struct UAF * | |
4342 | get_uaf_name (uname) | |
4343 | char * uname; | |
4344 | { | |
4345 | register status; | |
4346 | struct FAB uaf_fab; | |
4347 | struct RAB uaf_rab; | |
4348 | ||
4349 | uaf_fab = cc$rms_fab; | |
4350 | uaf_rab = cc$rms_rab; | |
4351 | /* initialize fab fields */ | |
4352 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4353 | uaf_fab.fab$b_fns = 21; | |
4354 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4355 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4356 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4357 | /* initialize rab fields */ | |
4358 | uaf_rab.rab$l_fab = &uaf_fab; | |
4359 | /* open the User Authorization File */ | |
986ffb24 | 4360 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4361 | if (!(status&1)) |
4362 | { | |
4363 | errno = EVMSERR; | |
4364 | vaxc$errno = status; | |
4365 | return 0; | |
4366 | } | |
986ffb24 | 4367 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4368 | if (!(status&1)) |
4369 | { | |
4370 | errno = EVMSERR; | |
4371 | vaxc$errno = status; | |
4372 | return 0; | |
4373 | } | |
4374 | /* read the requested record - index is in uname */ | |
4375 | uaf_rab.rab$l_kbf = uname; | |
4376 | uaf_rab.rab$b_ksz = strlen (uname); | |
4377 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4378 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4379 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4380 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4381 | if (!(status&1)) |
4382 | { | |
4383 | errno = EVMSERR; | |
4384 | vaxc$errno = status; | |
4385 | return 0; | |
4386 | } | |
4387 | /* close the User Authorization File */ | |
986ffb24 | 4388 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4389 | if (!(status&1)) |
4390 | { | |
4391 | errno = EVMSERR; | |
4392 | vaxc$errno = status; | |
4393 | return 0; | |
4394 | } | |
986ffb24 | 4395 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4396 | if (!(status&1)) |
4397 | { | |
4398 | errno = EVMSERR; | |
4399 | vaxc$errno = status; | |
4400 | return 0; | |
4401 | } | |
4402 | return &retuaf; | |
4403 | } | |
4404 | ||
4405 | struct UAF * | |
4406 | get_uaf_uic (uic) | |
4407 | unsigned long uic; | |
4408 | { | |
4409 | register status; | |
4410 | struct FAB uaf_fab; | |
4411 | struct RAB uaf_rab; | |
4412 | ||
4413 | uaf_fab = cc$rms_fab; | |
4414 | uaf_rab = cc$rms_rab; | |
4415 | /* initialize fab fields */ | |
4416 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4417 | uaf_fab.fab$b_fns = 21; | |
4418 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4419 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4420 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4421 | /* initialize rab fields */ | |
4422 | uaf_rab.rab$l_fab = &uaf_fab; | |
4423 | /* open the User Authorization File */ | |
986ffb24 | 4424 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4425 | if (!(status&1)) |
4426 | { | |
4427 | errno = EVMSERR; | |
4428 | vaxc$errno = status; | |
4429 | return 0; | |
4430 | } | |
986ffb24 | 4431 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4432 | if (!(status&1)) |
4433 | { | |
4434 | errno = EVMSERR; | |
4435 | vaxc$errno = status; | |
4436 | return 0; | |
4437 | } | |
4438 | /* read the requested record - index is in uic */ | |
4439 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4440 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4441 | uaf_rab.rab$b_ksz = sizeof uic; | |
4442 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4443 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4444 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4445 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4446 | if (!(status&1)) |
4447 | { | |
4448 | errno = EVMSERR; | |
4449 | vaxc$errno = status; | |
4450 | return 0; | |
4451 | } | |
4452 | /* close the User Authorization File */ | |
986ffb24 | 4453 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4454 | if (!(status&1)) |
4455 | { | |
4456 | errno = EVMSERR; | |
4457 | vaxc$errno = status; | |
4458 | return 0; | |
4459 | } | |
986ffb24 | 4460 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4461 | if (!(status&1)) |
4462 | { | |
4463 | errno = EVMSERR; | |
4464 | vaxc$errno = status; | |
4465 | return 0; | |
4466 | } | |
4467 | return &retuaf; | |
4468 | } | |
4469 | ||
4470 | static struct passwd retpw; | |
4471 | ||
4472 | struct passwd * | |
4473 | cnv_uaf_pw (up) | |
4474 | struct UAF * up; | |
4475 | { | |
4476 | char * ptr; | |
4477 | ||
4478 | /* copy these out first because if the username is 32 chars, the next | |
4479 | section will overwrite the first byte of the UIC */ | |
4480 | retpw.pw_uid = up->uaf$w_mem; | |
4481 | retpw.pw_gid = up->uaf$w_grp; | |
4482 | ||
4483 | /* I suppose this is not the best sytle, to possibly overwrite one | |
4484 | byte beyond the end of the field, but what the heck... */ | |
4485 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4486 | while (ptr[-1] == ' ') | |
4487 | ptr--; | |
4488 | *ptr = '\0'; | |
4489 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4490 | ||
4491 | /* the rest of these are counted ascii strings */ | |
4492 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4493 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4494 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4495 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4496 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4497 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4498 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4499 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4500 | ||
4501 | return &retpw; | |
4502 | } | |
4503 | #else /* not READ_SYSUAF */ | |
4504 | static struct passwd retpw; | |
4505 | #endif /* not READ_SYSUAF */ | |
4506 | ||
4507 | struct passwd * | |
4508 | getpwnam (name) | |
4509 | char * name; | |
4510 | { | |
4511 | #ifdef READ_SYSUAF | |
4512 | struct UAF *up; | |
4513 | #else | |
4514 | char * user; | |
4515 | char * dir; | |
4516 | unsigned char * full; | |
4517 | #endif /* READ_SYSUAF */ | |
4518 | char *ptr = name; | |
4519 | ||
4520 | while (*ptr) | |
4521 | { | |
4522 | if ('a' <= *ptr && *ptr <= 'z') | |
4523 | *ptr -= 040; | |
4524 | ptr++; | |
4525 | } | |
4526 | #ifdef READ_SYSUAF | |
4527 | if (!(up = get_uaf_name (name))) | |
4528 | return 0; | |
4529 | return cnv_uaf_pw (up); | |
4530 | #else | |
4531 | if (strcmp (name, getenv ("USER")) == 0) | |
4532 | { | |
4533 | retpw.pw_uid = getuid (); | |
4534 | retpw.pw_gid = getgid (); | |
4535 | strcpy (retpw.pw_name, name); | |
4536 | if (full = egetenv ("FULLNAME")) | |
4537 | strcpy (retpw.pw_gecos, full); | |
4538 | else | |
4539 | *retpw.pw_gecos = '\0'; | |
4540 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4541 | *retpw.pw_shell = '\0'; | |
4542 | return &retpw; | |
4543 | } | |
4544 | else | |
4545 | return 0; | |
4546 | #endif /* not READ_SYSUAF */ | |
4547 | } | |
4548 | ||
4549 | struct passwd * | |
4550 | getpwuid (uid) | |
4551 | unsigned long uid; | |
4552 | { | |
4553 | #ifdef READ_SYSUAF | |
4554 | struct UAF * up; | |
4555 | ||
4556 | if (!(up = get_uaf_uic (uid))) | |
4557 | return 0; | |
4558 | return cnv_uaf_pw (up); | |
4559 | #else | |
4560 | if (uid == sys_getuid ()) | |
4561 | return getpwnam (egetenv ("USER")); | |
4562 | else | |
4563 | return 0; | |
4564 | #endif /* not READ_SYSUAF */ | |
4565 | } | |
4566 | ||
4567 | /* return total address space available to the current process. This is | |
4568 | the sum of the current p0 size, p1 size and free page table entries | |
4569 | available. */ | |
4570 | vlimit () | |
4571 | { | |
4572 | int item_code; | |
4573 | unsigned long free_pages; | |
4574 | unsigned long frep0va; | |
4575 | unsigned long frep1va; | |
4576 | register status; | |
4577 | ||
4578 | item_code = JPI$_FREPTECNT; | |
4579 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4580 | { | |
4581 | errno = EVMSERR; | |
4582 | vaxc$errno = status; | |
4583 | return -1; | |
4584 | } | |
4585 | free_pages *= 512; | |
4586 | ||
4587 | item_code = JPI$_FREP0VA; | |
4588 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4589 | { | |
4590 | errno = EVMSERR; | |
4591 | vaxc$errno = status; | |
4592 | return -1; | |
4593 | } | |
4594 | item_code = JPI$_FREP1VA; | |
4595 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4596 | { | |
4597 | errno = EVMSERR; | |
4598 | vaxc$errno = status; | |
4599 | return -1; | |
4600 | } | |
4601 | ||
4602 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4603 | } | |
4604 | ||
4605 | define_logical_name (varname, string) | |
4606 | char *varname; | |
4607 | char *string; | |
4608 | { | |
4609 | struct dsc$descriptor_s strdsc = | |
4610 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4611 | struct dsc$descriptor_s envdsc = | |
4612 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4613 | struct dsc$descriptor_s lnmdsc = | |
4614 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4615 | ||
4616 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4617 | } | |
4618 | ||
4619 | delete_logical_name (varname) | |
4620 | char *varname; | |
4621 | { | |
4622 | struct dsc$descriptor_s envdsc = | |
4623 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4624 | struct dsc$descriptor_s lnmdsc = | |
4625 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4626 | ||
4627 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4628 | } | |
4629 | ||
4630 | ulimit () | |
4631 | {} | |
4632 | ||
86a5659e JB |
4633 | setpgrp () |
4634 | {} | |
4635 | ||
4636 | execvp () | |
4637 | { | |
4638 | error ("execvp system call not implemented"); | |
4639 | } | |
4640 | ||
4641 | int | |
4642 | rename (from, to) | |
4643 | char *from, *to; | |
4644 | { | |
4645 | int status; | |
4646 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4647 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4648 | char from_esn[NAM$C_MAXRSS]; | |
4649 | char to_esn[NAM$C_MAXRSS]; | |
4650 | ||
4651 | from_fab.fab$l_fna = from; | |
4652 | from_fab.fab$b_fns = strlen (from); | |
4653 | from_fab.fab$l_nam = &from_nam; | |
4654 | from_fab.fab$l_fop = FAB$M_NAM; | |
4655 | ||
4656 | from_nam.nam$l_esa = from_esn; | |
4657 | from_nam.nam$b_ess = sizeof from_esn; | |
4658 | ||
4659 | to_fab.fab$l_fna = to; | |
4660 | to_fab.fab$b_fns = strlen (to); | |
4661 | to_fab.fab$l_nam = &to_nam; | |
4662 | to_fab.fab$l_fop = FAB$M_NAM; | |
4663 | ||
4664 | to_nam.nam$l_esa = to_esn; | |
4665 | to_nam.nam$b_ess = sizeof to_esn; | |
4666 | ||
4667 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4668 | ||
4669 | if (status & 1) | |
4670 | return 0; | |
4671 | else | |
4672 | { | |
4673 | if (status == RMS$_DEV) | |
4674 | errno = EXDEV; | |
4675 | else | |
4676 | errno = EVMSERR; | |
4677 | vaxc$errno = status; | |
4678 | return -1; | |
4679 | } | |
4680 | } | |
4681 | ||
4682 | /* This function renames a file like `rename', but it strips | |
4683 | the version number from the "to" filename, such that the "to" file is | |
4684 | will always be a new version. It also sets the file protection once it is | |
4685 | finished. The protection that we will use is stored in fab_final_pro, | |
4686 | and was set when we did a creat_copy_attrs to create the file that we | |
4687 | are renaming. | |
4688 | ||
4689 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4690 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4691 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4692 | the W and D bits together. */ | |
4693 | ||
4694 | ||
4695 | static struct fibdef fib; /* We need this initialized to zero */ | |
4696 | char vms_file_written[NAM$C_MAXRSS]; | |
4697 | ||
4698 | int | |
4699 | rename_sans_version (from,to) | |
4700 | char *from, *to; | |
4701 | { | |
4702 | short int chan; | |
4703 | int stat; | |
4704 | short int iosb[4]; | |
4705 | int status; | |
4706 | struct FAB to_fab = cc$rms_fab; | |
4707 | struct NAM to_nam = cc$rms_nam; | |
4708 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4709 | struct dsc$descriptor fib_attr[2] | |
4710 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4711 | char to_esn[NAM$C_MAXRSS]; | |
4712 | ||
4713 | $DESCRIPTOR (disk,to_esn); | |
4714 | ||
4715 | to_fab.fab$l_fna = to; | |
4716 | to_fab.fab$b_fns = strlen (to); | |
4717 | to_fab.fab$l_nam = &to_nam; | |
4718 | to_fab.fab$l_fop = FAB$M_NAM; | |
4719 | ||
4720 | to_nam.nam$l_esa = to_esn; | |
4721 | to_nam.nam$b_ess = sizeof to_esn; | |
4722 | ||
4723 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4724 | ||
4725 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4726 | *(to_nam.nam$l_ver) = '\0'; | |
4727 | ||
4728 | stat = rename (from, to_esn); | |
4729 | if (stat < 0) | |
4730 | return stat; | |
4731 | ||
4732 | strcpy (vms_file_written, to_esn); | |
4733 | ||
4734 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4735 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4736 | ||
4737 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4738 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4739 | |
4740 | /* Copy these fields into the fib */ | |
4741 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4742 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4743 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4744 | ||
986ffb24 | 4745 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4746 | |
986ffb24 | 4747 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4748 | if (!stat) |
986ffb24 JB |
4749 | LIB$SIGNAL (stat); |
4750 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4751 | 0, 0, 0, &fib_attr, 0); |
4752 | if (!stat) | |
986ffb24 JB |
4753 | LIB$SIGNAL (stat); |
4754 | stat = SYS$DASSGN (chan); | |
86a5659e | 4755 | if (!stat) |
986ffb24 | 4756 | LIB$SIGNAL (stat); |
0137dbf7 | 4757 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4758 | return 0; |
4759 | } | |
4760 | ||
4761 | link (file, new) | |
4762 | char * file, * new; | |
4763 | { | |
4764 | register status; | |
4765 | struct FAB fab; | |
4766 | struct NAM nam; | |
4767 | unsigned short fid[3]; | |
4768 | char esa[NAM$C_MAXRSS]; | |
4769 | ||
4770 | fab = cc$rms_fab; | |
4771 | fab.fab$l_fop = FAB$M_OFP; | |
4772 | fab.fab$l_fna = file; | |
4773 | fab.fab$b_fns = strlen (file); | |
4774 | fab.fab$l_nam = &nam; | |
4775 | ||
4776 | nam = cc$rms_nam; | |
4777 | nam.nam$l_esa = esa; | |
4778 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4779 | ||
4780 | status = SYS$PARSE (&fab); | |
4781 | if ((status & 1) == 0) | |
4782 | { | |
4783 | errno = EVMSERR; | |
4784 | vaxc$errno = status; | |
4785 | return -1; | |
4786 | } | |
4787 | status = SYS$SEARCH (&fab); | |
4788 | if ((status & 1) == 0) | |
4789 | { | |
4790 | errno = EVMSERR; | |
4791 | vaxc$errno = status; | |
4792 | return -1; | |
4793 | } | |
4794 | ||
4795 | fid[0] = nam.nam$w_fid[0]; | |
4796 | fid[1] = nam.nam$w_fid[1]; | |
4797 | fid[2] = nam.nam$w_fid[2]; | |
4798 | ||
4799 | fab.fab$l_fna = new; | |
4800 | fab.fab$b_fns = strlen (new); | |
4801 | ||
4802 | status = SYS$PARSE (&fab); | |
4803 | if ((status & 1) == 0) | |
4804 | { | |
4805 | errno = EVMSERR; | |
4806 | vaxc$errno = status; | |
4807 | return -1; | |
4808 | } | |
4809 | ||
4810 | nam.nam$w_fid[0] = fid[0]; | |
4811 | nam.nam$w_fid[1] = fid[1]; | |
4812 | nam.nam$w_fid[2] = fid[2]; | |
4813 | ||
4814 | nam.nam$l_esa = nam.nam$l_name; | |
4815 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
4816 | ||
4817 | status = SYS$ENTER (&fab); | |
4818 | if ((status & 1) == 0) | |
4819 | { | |
4820 | errno = EVMSERR; | |
4821 | vaxc$errno = status; | |
4822 | return -1; | |
4823 | } | |
4824 | ||
4825 | return 0; | |
4826 | } | |
4827 | ||
4828 | croak (badfunc) | |
4829 | char *badfunc; | |
4830 | { | |
4831 | printf ("%s not yet implemented\r\n", badfunc); | |
4832 | reset_sys_modes (); | |
4833 | exit (1); | |
4834 | } | |
4835 | ||
4836 | long | |
4837 | random () | |
4838 | { | |
4839 | /* Arrange to return a range centered on zero. */ | |
4840 | return rand () - (1 << 30); | |
4841 | } | |
4842 | ||
4843 | srandom (seed) | |
4844 | { | |
4845 | srand (seed); | |
4846 | } | |
4847 | #endif /* VMS */ | |
4848 | \f | |
b97ab886 | 4849 | #ifdef AIXHFT |
86a5659e JB |
4850 | |
4851 | /* Called from init_sys_modes. */ | |
4852 | hft_init () | |
4853 | { | |
4854 | int junk; | |
4855 | ||
4856 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
4857 | if we are on an HFT by trying to get an HFT error code. If this | |
4858 | call fails, we're not on an HFT. */ | |
4859 | #ifdef IBMR2AIX | |
4860 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4861 | return; | |
4862 | #else /* not IBMR2AIX */ | |
4863 | if (ioctl (0, HFQEIO, 0) < 0) | |
4864 | return; | |
4865 | #endif /* not IBMR2AIX */ | |
4866 | ||
4867 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
4868 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
4869 | there's no way to determine the old mapping, so in reset_sys_modes | |
4870 | we need to assume that the normal map had been present. Of course, this | |
4871 | code also doesn't help if on a terminal emulator which doesn't understand | |
4872 | HFT VTD's. */ | |
4873 | { | |
4874 | struct hfbuf buf; | |
4875 | struct hfkeymap keymap; | |
4876 | ||
4877 | buf.hf_bufp = (char *)&keymap; | |
4878 | buf.hf_buflen = sizeof (keymap); | |
4879 | keymap.hf_nkeys = 2; | |
4880 | keymap.hfkey[0].hf_kpos = 15; | |
4881 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4882 | #ifdef IBMR2AIX | |
4883 | keymap.hfkey[0].hf_keyidh = '<'; | |
4884 | #else /* not IBMR2AIX */ | |
4885 | keymap.hfkey[0].hf_page = '<'; | |
4886 | #endif /* not IBMR2AIX */ | |
4887 | keymap.hfkey[0].hf_char = 127; | |
4888 | keymap.hfkey[1].hf_kpos = 15; | |
4889 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4890 | #ifdef IBMR2AIX | |
4891 | keymap.hfkey[1].hf_keyidh = '<'; | |
4892 | #else /* not IBMR2AIX */ | |
4893 | keymap.hfkey[1].hf_page = '<'; | |
4894 | #endif /* not IBMR2AIX */ | |
4895 | keymap.hfkey[1].hf_char = 127; | |
4896 | hftctl (0, HFSKBD, &buf); | |
4897 | } | |
4898 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
4899 | at times. */ | |
4900 | line_ins_del_ok = char_ins_del_ok = 0; | |
4901 | } | |
4902 | ||
4903 | /* Reset the rubout key to backspace. */ | |
4904 | ||
4905 | hft_reset () | |
4906 | { | |
4907 | struct hfbuf buf; | |
4908 | struct hfkeymap keymap; | |
4909 | int junk; | |
4910 | ||
4911 | #ifdef IBMR2AIX | |
4912 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4913 | return; | |
4914 | #else /* not IBMR2AIX */ | |
4915 | if (ioctl (0, HFQEIO, 0) < 0) | |
4916 | return; | |
4917 | #endif /* not IBMR2AIX */ | |
4918 | ||
4919 | buf.hf_bufp = (char *)&keymap; | |
4920 | buf.hf_buflen = sizeof (keymap); | |
4921 | keymap.hf_nkeys = 2; | |
4922 | keymap.hfkey[0].hf_kpos = 15; | |
4923 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4924 | #ifdef IBMR2AIX | |
4925 | keymap.hfkey[0].hf_keyidh = '<'; | |
4926 | #else /* not IBMR2AIX */ | |
4927 | keymap.hfkey[0].hf_page = '<'; | |
4928 | #endif /* not IBMR2AIX */ | |
4929 | keymap.hfkey[0].hf_char = 8; | |
4930 | keymap.hfkey[1].hf_kpos = 15; | |
4931 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4932 | #ifdef IBMR2AIX | |
4933 | keymap.hfkey[1].hf_keyidh = '<'; | |
4934 | #else /* not IBMR2AIX */ | |
4935 | keymap.hfkey[1].hf_page = '<'; | |
4936 | #endif /* not IBMR2AIX */ | |
4937 | keymap.hfkey[1].hf_char = 8; | |
4938 | hftctl (0, HFSKBD, &buf); | |
4939 | } | |
4940 | ||
b97ab886 | 4941 | #endif /* AIXHFT */ |
c238be24 RS |
4942 | |
4943 | #ifdef USE_DL_STUBS | |
4944 | ||
4945 | /* These are included on Sunos 4.1 when we do not use shared libraries. | |
4946 | X11 libraries may refer to these functions but (we hope) do not | |
4947 | actually call them. */ | |
4948 | ||
4949 | void * | |
4950 | dlopen () | |
4951 | { | |
4952 | return 0; | |
4953 | } | |
4954 | ||
4955 | void * | |
4956 | dlsym () | |
4957 | { | |
4958 | return 0; | |
4959 | } | |
4960 | ||
4961 | int | |
4962 | dlclose () | |
4963 | { | |
4964 | return -1; | |
4965 | } | |
4966 | ||
4967 | #endif /* USE_DL_STUBS */ | |
51417996 RS |
4968 | \f |
4969 | #ifndef BSTRING | |
4970 | ||
4971 | #ifndef bzero | |
4972 | ||
4973 | void | |
4974 | bzero (b, length) | |
4975 | register char *b; | |
4976 | register int length; | |
4977 | { | |
4978 | #ifdef VMS | |
4979 | short zero = 0; | |
4980 | long max_str = 65535; | |
4981 | ||
4982 | while (length > max_str) { | |
4983 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
4984 | length -= max_str; | |
4985 | b += max_str; | |
4986 | } | |
4987 | max_str = length; | |
4988 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
4989 | #else | |
4990 | while (length-- > 0) | |
4991 | *b++ = 0; | |
4992 | #endif /* not VMS */ | |
4993 | } | |
4994 | ||
4995 | #endif /* no bzero */ | |
4996 | #endif /* BSTRING */ | |
4997 | ||
4998 | #if (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) | |
4999 | #undef bcopy | |
5000 | ||
5001 | /* Saying `void' requires a declaration, above, where bcopy is used | |
5002 | and that declaration causes pain for systems where bcopy is a macro. */ | |
5003 | bcopy (b1, b2, length) | |
5004 | register char *b1; | |
5005 | register char *b2; | |
5006 | register int length; | |
5007 | { | |
5008 | #ifdef VMS | |
5009 | long max_str = 65535; | |
5010 | ||
5011 | while (length > max_str) { | |
5012 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
5013 | length -= max_str; | |
5014 | b1 += max_str; | |
5015 | b2 += max_str; | |
5016 | } | |
5017 | max_str = length; | |
5018 | (void) LIB$MOVC3 (&length, b1, b2); | |
5019 | #else | |
5020 | while (length-- > 0) | |
5021 | *b2++ = *b1++; | |
5022 | #endif /* not VMS */ | |
5023 | } | |
5024 | #endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ | |
5025 | ||
5026 | #ifdef BSTRING | |
5027 | #ifndef bcmp | |
5028 | int | |
5029 | bcmp (b1, b2, length) /* This could be a macro! */ | |
5030 | register char *b1; | |
5031 | register char *b2; | |
5032 | register int length; | |
5033 | { | |
5034 | #ifdef VMS | |
5035 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
5036 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
5037 | ||
5038 | return STR$COMPARE (&src1, &src2); | |
5039 | #else | |
5040 | while (length-- > 0) | |
5041 | if (*b1++ != *b2++) | |
5042 | return 1; | |
5043 | ||
5044 | return 0; | |
5045 | #endif /* not VMS */ | |
5046 | } | |
5047 | #endif /* no bcmp */ | |
5048 | #endif /* not BSTRING */ |