Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
bb4bc8e2 | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94 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 | ||
43 | #ifndef close | |
44 | #define sys_close close | |
45 | #else | |
46 | #undef close | |
47 | #endif | |
48 | ||
49 | #ifndef open | |
50 | #define sys_open open | |
51 | #else /* `open' is a macro */ | |
52 | #undef open | |
53 | #endif /* `open' is a macro */ | |
54 | ||
986ffb24 JB |
55 | /* Does anyone other than VMS need this? */ |
56 | #ifndef fwrite | |
57 | #define sys_fwrite fwrite | |
58 | #else | |
59 | #undef fwrite | |
60 | #endif | |
61 | ||
86a5659e JB |
62 | #include <stdio.h> |
63 | #include <sys/types.h> | |
64 | #include <sys/stat.h> | |
65 | #include <errno.h> | |
66 | ||
207bdbdb RS |
67 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
68 | #include <dos.h> | |
69 | #include "dosfns.h" | |
70 | #include "msdos.h" | |
71 | #include <sys/param.h> | |
72 | #endif | |
73 | ||
86a5659e | 74 | extern int errno; |
86a5659e | 75 | |
bb4bc8e2 RM |
76 | #ifdef VMS |
77 | #include <rms.h> | |
78 | #include <ttdef.h> | |
79 | #include <tt2def.h> | |
80 | #include <iodef.h> | |
81 | #include <ssdef.h> | |
82 | #include <descrip.h> | |
83 | #include <fibdef.h> | |
84 | #include <atrdef.h> | |
85 | #include <ctype.h> | |
86 | #include <string.h> | |
87 | #ifdef __GNUC__ | |
88 | #include <sys/file.h> | |
89 | #else | |
90 | #include <file.h> | |
91 | #endif | |
92 | #undef F_SETFL | |
93 | #ifndef RAB$C_BID | |
94 | #include <rab.h> | |
95 | #endif | |
96 | #define MAXIOSIZE ( 32 * PAGESIZE ) /* Don't I/O more than 32 blocks at a time */ | |
97 | #endif /* VMS */ | |
98 | ||
99 | #ifndef BSD4_1 | |
100 | #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG) | |
101 | because the vms compiler doesn't grok `defined' */ | |
102 | #include <fcntl.h> | |
103 | #endif | |
104 | #ifdef USG | |
105 | #ifndef USG5 | |
106 | #include <fcntl.h> | |
107 | #endif | |
108 | #endif | |
109 | #endif /* not 4.1 bsd */ | |
86a5659e | 110 | |
411c533f JB |
111 | #ifdef BROKEN_FASYNC |
112 | /* On some systems (DGUX comes to mind real fast) FASYNC causes | |
113 | background writes to the terminal to stop all processes in the | |
114 | process group when invoked under the csh (and probably any shell | |
115 | with job control). This stops Emacs dead in its tracks when coming | |
116 | up under X11. */ | |
117 | #undef FASYNC | |
118 | #endif | |
86a5659e | 119 | |
207bdbdb | 120 | #ifndef MSDOS |
86a5659e | 121 | #include <sys/ioctl.h> |
207bdbdb | 122 | #endif |
e04a4e0d | 123 | #include "systty.h" |
94c8642a | 124 | #include "syswait.h" |
86a5659e | 125 | |
86a5659e JB |
126 | #ifdef BROKEN_TIOCGWINSZ |
127 | #undef TIOCGWINSZ | |
128 | #endif | |
129 | ||
86a5659e JB |
130 | #ifdef USG |
131 | #include <sys/utsname.h> | |
132 | #include <string.h> | |
133 | #ifndef MEMORY_IN_STRING_H | |
134 | #include <memory.h> | |
135 | #endif | |
136 | #ifdef TIOCGWINSZ | |
137 | #ifdef NEED_SIOCTL | |
138 | #include <sys/sioctl.h> | |
139 | #endif | |
140 | #ifdef NEED_PTEM_H | |
141 | #include <sys/stream.h> | |
142 | #include <sys/ptem.h> | |
143 | #endif | |
144 | #endif /* TIOCGWINSZ */ | |
86a5659e JB |
145 | #endif /* USG */ |
146 | ||
86a5659e JB |
147 | extern int quit_char; |
148 | ||
0137dbf7 | 149 | #include "frame.h" |
86a5659e JB |
150 | #include "window.h" |
151 | #include "termhooks.h" | |
152 | #include "termchar.h" | |
153 | #include "termopts.h" | |
154 | #include "dispextern.h" | |
155 | #include "process.h" | |
156 | ||
157 | #ifdef NONSYSTEM_DIR_LIBRARY | |
158 | #include "ndir.h" | |
159 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
160 | ||
91bac16a JB |
161 | #include "syssignal.h" |
162 | #include "systime.h" | |
86a5659e | 163 | |
a00d5589 RS |
164 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
165 | #ifndef LPASS8 | |
166 | #define LPASS8 0 | |
167 | #endif | |
168 | ||
169 | #ifdef BSD4_1 | |
170 | #define LNOFLSH 0100000 | |
171 | #endif | |
172 | ||
86a5659e JB |
173 | static int baud_convert[] = |
174 | #ifdef BAUD_CONVERT | |
175 | BAUD_CONVERT; | |
176 | #else | |
177 | { | |
178 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
179 | 1800, 2400, 4800, 9600, 19200, 38400 | |
180 | }; | |
181 | #endif | |
182 | ||
183 | extern short ospeed; | |
184 | ||
91bac16a | 185 | /* The file descriptor for Emacs's input terminal. |
64e971c3 | 186 | Under Unix, this is normaly zero except when using X; |
91bac16a JB |
187 | under VMS, we place the input channel number here. |
188 | This allows us to write more code that works for both VMS and Unix. */ | |
189 | static int input_fd; | |
64e971c3 RS |
190 | \f |
191 | /* Specify a different file descriptor for further input operations. */ | |
192 | ||
193 | void | |
194 | change_input_fd (fd) | |
195 | int fd; | |
196 | { | |
197 | input_fd = fd; | |
198 | } | |
199 | ||
200 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 201 | |
86a5659e JB |
202 | discard_tty_input () |
203 | { | |
91bac16a | 204 | struct emacs_tty buf; |
86a5659e JB |
205 | |
206 | if (noninteractive) | |
207 | return; | |
208 | ||
209 | /* Discarding input is not safe when the input could contain | |
210 | replies from the X server. So don't do it. */ | |
211 | if (read_socket_hook) | |
212 | return; | |
213 | ||
214 | #ifdef VMS | |
215 | end_kbd_input (); | |
91bac16a JB |
216 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
217 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
218 | queue_kbd_input (); |
219 | #else /* not VMS */ | |
220 | #ifdef APOLLO | |
221 | { | |
222 | int zero = 0; | |
64e971c3 | 223 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
224 | } |
225 | #else /* not Apollo */ | |
207bdbdb RS |
226 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
227 | while (dos_keyread () != -1) | |
228 | ; | |
229 | #else /* not MSDOS */ | |
91bac16a JB |
230 | EMACS_GET_TTY (input_fd, &buf); |
231 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 232 | #endif /* not MSDOS */ |
86a5659e JB |
233 | #endif /* not Apollo */ |
234 | #endif /* not VMS */ | |
235 | } | |
236 | ||
237 | #ifdef SIGTSTP | |
238 | ||
64e971c3 RS |
239 | /* Arrange for character C to be read as the next input from |
240 | the terminal. */ | |
241 | ||
86a5659e JB |
242 | stuff_char (c) |
243 | char c; | |
244 | { | |
245 | /* Should perhaps error if in batch mode */ | |
246 | #ifdef TIOCSTI | |
64e971c3 | 247 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 248 | #else /* no TIOCSTI */ |
71f06467 | 249 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
250 | #endif /* no TIOCSTI */ |
251 | } | |
252 | ||
253 | #endif /* SIGTSTP */ | |
64e971c3 | 254 | \f |
86a5659e JB |
255 | init_baud_rate () |
256 | { | |
86a5659e JB |
257 | if (noninteractive) |
258 | ospeed = 0; | |
259 | else | |
260 | { | |
207bdbdb RS |
261 | #ifdef MSDOS |
262 | ospeed = 15; | |
263 | #else | |
86a5659e | 264 | #ifdef VMS |
91bac16a JB |
265 | struct sensemode sg; |
266 | ||
267 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 268 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
269 | ospeed = sg.xmit_baud; |
270 | #else /* not VMS */ | |
e04a4e0d JB |
271 | #ifdef HAVE_TERMIOS |
272 | struct termios sg; | |
91bac16a | 273 | |
71f06467 | 274 | sg.c_cflag = B9600; |
64e971c3 | 275 | tcgetattr (input_fd, &sg); |
d7272cff | 276 | ospeed = cfgetospeed (&sg); |
e04a4e0d JB |
277 | #else /* neither VMS nor TERMIOS */ |
278 | #ifdef HAVE_TERMIO | |
279 | struct termio sg; | |
91bac16a | 280 | |
71f06467 | 281 | sg.c_cflag = B9600; |
e04a4e0d | 282 | #ifdef HAVE_TCATTR |
64e971c3 | 283 | tcgetattr (input_fd, &sg); |
e04a4e0d | 284 | #else |
6c65530f | 285 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 286 | #endif |
91bac16a | 287 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 288 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
289 | struct sgttyb sg; |
290 | ||
291 | sg.sg_ospeed = B9600; | |
64e971c3 | 292 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 293 | abort (); |
91bac16a | 294 | ospeed = sg.sg_ospeed; |
91bac16a | 295 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 296 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 297 | #endif /* not VMS */ |
207bdbdb | 298 | #endif /* not MSDOS */ |
86a5659e JB |
299 | } |
300 | ||
301 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
302 | ? baud_convert[ospeed] : 9600); | |
303 | if (baud_rate == 0) | |
304 | baud_rate = 1200; | |
305 | } | |
306 | ||
307 | /*ARGSUSED*/ | |
308 | set_exclusive_use (fd) | |
309 | int fd; | |
310 | { | |
311 | #ifdef FIOCLEX | |
312 | ioctl (fd, FIOCLEX, 0); | |
313 | #endif | |
314 | /* Ok to do nothing if this feature does not exist */ | |
315 | } | |
64e971c3 | 316 | \f |
86a5659e JB |
317 | #ifndef subprocesses |
318 | ||
319 | wait_without_blocking () | |
320 | { | |
321 | #ifdef BSD | |
322 | wait3 (0, WNOHANG | WUNTRACED, 0); | |
323 | #else | |
324 | croak ("wait_without_blocking"); | |
325 | #endif | |
326 | synch_process_alive = 0; | |
327 | } | |
328 | ||
329 | #endif /* not subprocesses */ | |
330 | ||
331 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
332 | (at least for bsd). */ | |
333 | ||
334 | SIGTYPE | |
335 | wait_for_termination_signal () | |
336 | {} | |
337 | ||
338 | /* Wait for subprocess with process id `pid' to terminate and | |
339 | make sure it will get eliminated (not remain forever as a zombie) */ | |
340 | ||
341 | wait_for_termination (pid) | |
342 | int pid; | |
343 | { | |
344 | while (1) | |
345 | { | |
346 | #ifdef subprocesses | |
347 | #ifdef VMS | |
348 | int status; | |
349 | ||
986ffb24 | 350 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
351 | break; |
352 | #else /* not VMS */ | |
05695621 | 353 | #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
354 | /* Note that kill returns -1 even if the process is just a zombie now. |
355 | But inevitably a SIGCHLD interrupt should be generated | |
356 | and child_sig will do wait3 and make the process go away. */ | |
357 | /* There is some indication that there is a bug involved with | |
358 | termination of subprocesses, perhaps involving a kernel bug too, | |
359 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
360 | if that causes the problem to go away or get worse. */ | |
361 | sigsetmask (sigmask (SIGCHLD)); | |
362 | if (0 > kill (pid, 0)) | |
363 | { | |
364 | sigsetmask (SIGEMPTYMASK); | |
365 | kill (getpid (), SIGCHLD); | |
366 | break; | |
367 | } | |
368 | if (wait_debugging) | |
369 | sleep (1); | |
370 | else | |
371 | sigpause (SIGEMPTYMASK); | |
05695621 RS |
372 | #else /* not BSD, and not HPUX version >= 6 */ |
373 | #if defined (UNIPLUS) | |
4c8975ad RS |
374 | if (0 > kill (pid, 0)) |
375 | break; | |
376 | wait (0); | |
05695621 | 377 | #else /* neither BSD nor UNIPLUS: random sysV */ |
9ab714c7 RS |
378 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
379 | sigblock (sigmask (SIGCHLD)); | |
380 | if (0 > kill (pid, 0)) | |
381 | { | |
382 | sigunblock (sigmask (SIGCHLD)); | |
383 | break; | |
384 | } | |
92c995de | 385 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 386 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
387 | #ifdef HAVE_SYSV_SIGPAUSE |
388 | sighold (SIGCHLD); | |
389 | if (0 > kill (pid, 0)) | |
390 | { | |
391 | sigrelse (SIGCHLD); | |
392 | break; | |
393 | } | |
394 | sigpause (SIGCHLD); | |
395 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
396 | if (0 > kill (pid, 0)) | |
86a5659e | 397 | break; |
4c8975ad RS |
398 | /* Using sleep instead of pause avoids timing error. |
399 | If the inferior dies just before the sleep, | |
400 | we lose just one second. */ | |
401 | sleep (1); | |
402 | #endif /* not HAVE_SYSV_SIGPAUSE */ | |
9ab714c7 | 403 | #endif /* not POSIX_SIGNALS */ |
4c8975ad RS |
404 | #endif /* not UNIPLUS */ |
405 | #endif /* not BSD, and not HPUX version >= 6 */ | |
86a5659e JB |
406 | #endif /* not VMS */ |
407 | #else /* not subprocesses */ | |
408 | #ifndef BSD4_1 | |
409 | if (kill (pid, 0) < 0) | |
410 | break; | |
411 | wait (0); | |
412 | #else /* BSD4_1 */ | |
413 | int status; | |
414 | status = wait (0); | |
415 | if (status == pid || status == -1) | |
416 | break; | |
417 | #endif /* BSD4_1 */ | |
418 | #endif /* not subprocesses */ | |
419 | } | |
420 | } | |
421 | ||
422 | #ifdef subprocesses | |
423 | ||
424 | /* | |
425 | * flush any pending output | |
426 | * (may flush input as well; it does not matter the way we use it) | |
427 | */ | |
428 | ||
429 | flush_pending_output (channel) | |
430 | int channel; | |
431 | { | |
432 | #ifdef HAVE_TERMIOS | |
433 | /* If we try this, we get hit with SIGTTIN, because | |
434 | the child's tty belongs to the child's pgrp. */ | |
435 | #else | |
436 | #ifdef TCFLSH | |
437 | ioctl (channel, TCFLSH, 1); | |
438 | #else | |
439 | #ifdef TIOCFLUSH | |
440 | int zero = 0; | |
441 | /* 3rd arg should be ignored | |
442 | but some 4.2 kernels actually want the address of an int | |
443 | and nonzero means something different. */ | |
444 | ioctl (channel, TIOCFLUSH, &zero); | |
445 | #endif | |
446 | #endif | |
447 | #endif | |
448 | } | |
64e971c3 | 449 | \f |
86a5659e JB |
450 | #ifndef VMS |
451 | /* Set up the terminal at the other end of a pseudo-terminal that | |
452 | we will be controlling an inferior through. | |
453 | It should not echo or do line-editing, since that is done | |
454 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
455 | ||
456 | child_setup_tty (out) | |
457 | int out; | |
458 | { | |
207bdbdb | 459 | #ifndef MSDOS |
91bac16a JB |
460 | struct emacs_tty s; |
461 | ||
462 | EMACS_GET_TTY (out, &s); | |
86a5659e | 463 | |
31be8d24 | 464 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
465 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
466 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
467 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); | |
468 | /* No output delays */ | |
469 | s.main.c_lflag &= ~ECHO; /* Disable echo */ | |
470 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
471 | s.main.c_iflag &= ~IUCLC; /* Disable map of upper case to lower on | |
472 | input */ | |
473 | s.main.c_oflag &= ~OLCUC; /* Disable map of lower case to upper on | |
474 | output */ | |
1bf96fb5 | 475 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 476 | #if 0 |
eb8c3be9 | 477 | /* Said to be unnecessary: */ |
91bac16a JB |
478 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
479 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
480 | #endif | |
481 | ||
482 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
483 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
484 | s.main.c_cc[VERASE] = 0377; /* disable erase processing */ | |
485 | s.main.c_cc[VKILL] = 0377; /* disable kill processing */ | |
486 | ||
86a5659e | 487 | #ifdef HPUX |
91bac16a | 488 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 489 | #endif /* HPUX */ |
91bac16a | 490 | |
86a5659e JB |
491 | #ifdef AIX |
492 | /* AIX enhanced edit loses NULs, so disable it */ | |
493 | #ifndef IBMR2AIX | |
91bac16a JB |
494 | s.main.c_line = 0; |
495 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
496 | #endif |
497 | /* Also, PTY overloads NUL and BREAK. | |
498 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
499 | s.main.c_iflag &= ~IGNBRK; |
500 | s.main.c_iflag &= ~BRKINT; | |
501 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 502 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
503 | #ifdef SIGNALS_VIA_CHARACTERS |
504 | /* the QUIT and INTR character are used in process_send_signal | |
505 | so set them here to something useful. */ | |
506 | if (s.main.c_cc[VQUIT] == 0377) | |
507 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
508 | if (s.main.c_cc[VINTR] == 0377) | |
509 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
510 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
511 | /* QUIT and INTR work better as signals, so disable character forms */ | |
512 | s.main.c_cc[VQUIT] = 0377; | |
513 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 514 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
515 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
516 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 517 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
518 | #endif /* AIX */ |
519 | ||
520 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
521 | |
522 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
523 | | CBREAK | TANDEM); | |
a00d5589 | 524 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
525 | s.main.sg_erase = 0377; |
526 | s.main.sg_kill = 0377; | |
1bf96fb5 | 527 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 528 | |
86a5659e JB |
529 | #endif /* not HAVE_TERMIO */ |
530 | ||
91bac16a | 531 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
532 | |
533 | #ifdef BSD4_1 | |
534 | if (interrupt_input) | |
535 | reset_sigio (); | |
536 | #endif /* BSD4_1 */ | |
537 | #ifdef RTU | |
538 | { | |
539 | int zero = 0; | |
540 | ioctl (out, FIOASYNC, &zero); | |
541 | } | |
542 | #endif /* RTU */ | |
207bdbdb | 543 | #endif /* not MSDOS */ |
86a5659e JB |
544 | } |
545 | #endif /* not VMS */ | |
546 | ||
547 | #endif /* subprocesses */ | |
548 | ||
549 | /*ARGSUSED*/ | |
550 | setpgrp_of_tty (pid) | |
551 | int pid; | |
552 | { | |
ffd56f97 | 553 | EMACS_SET_TTY_PGRP (input_fd, &pid); |
86a5659e | 554 | } |
64e971c3 | 555 | \f |
86a5659e JB |
556 | /* Record a signal code and the handler for it. */ |
557 | struct save_signal | |
558 | { | |
559 | int code; | |
560 | SIGTYPE (*handler) (); | |
561 | }; | |
562 | ||
563 | /* Suspend the Emacs process; give terminal to its superior. */ | |
564 | ||
565 | sys_suspend () | |
566 | { | |
207bdbdb RS |
567 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
568 | int st; | |
569 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
570 | #endif | |
86a5659e | 571 | #ifdef VMS |
88191e36 RS |
572 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
573 | to the current emacs as a cheaper than starting a whole new process. This | |
574 | is set up by KEPTEDITOR.COM. */ | |
575 | unsigned long parent_id, foster_parent_id; | |
576 | char *fpid_string; | |
577 | ||
578 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
579 | if (fpid_string != NULL) | |
580 | { | |
581 | sscanf (fpid_string, "%x", &foster_parent_id); | |
582 | if (foster_parent_id != 0) | |
583 | parent_id = foster_parent_id; | |
584 | else | |
585 | parent_id = getppid (); | |
586 | } | |
587 | else | |
588 | parent_id = getppid (); | |
589 | ||
9ac0d9e0 | 590 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 591 | |
86a5659e JB |
592 | if (parent_id && parent_id != 0xffffffff) |
593 | { | |
594 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
595 | int status = LIB$ATTACH (&parent_id) & 1; | |
596 | signal (SIGINT, oldsig); | |
597 | return status; | |
598 | } | |
599 | else | |
600 | { | |
601 | struct { | |
602 | int l; | |
603 | char *a; | |
604 | } d_prompt; | |
605 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
606 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 607 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
608 | return 1; |
609 | } | |
610 | return -1; | |
611 | #else | |
207bdbdb | 612 | #if defined(SIGTSTP) && !defined(MSDOS) |
86a5659e | 613 | |
5a570e37 | 614 | { |
e89a2cd5 | 615 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
616 | EMACS_KILLPG (pgrp, SIGTSTP); |
617 | } | |
86a5659e JB |
618 | |
619 | #else /* No SIGTSTP */ | |
620 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
621 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
622 | kill (getpid (), SIGQUIT); | |
623 | ||
624 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
625 | ||
626 | /* On a system where suspending is not implemented, | |
627 | instead fork a subshell and let it talk directly to the terminal | |
628 | while we wait. */ | |
629 | int pid = fork (); | |
630 | struct save_signal saved_handlers[5]; | |
631 | ||
632 | saved_handlers[0].code = SIGINT; | |
633 | saved_handlers[1].code = SIGQUIT; | |
634 | saved_handlers[2].code = SIGTERM; | |
635 | #ifdef SIGIO | |
636 | saved_handlers[3].code = SIGIO; | |
637 | saved_handlers[4].code = 0; | |
638 | #else | |
639 | saved_handlers[3].code = 0; | |
640 | #endif | |
641 | ||
642 | if (pid == -1) | |
643 | error ("Can't spawn subshell"); | |
644 | if (pid == 0) | |
645 | { | |
646 | char *sh; | |
647 | ||
207bdbdb RS |
648 | #ifdef MSDOS /* MW, Aug 1993 */ |
649 | getwd (oldwd); | |
650 | #endif | |
86a5659e JB |
651 | sh = (char *) egetenv ("SHELL"); |
652 | if (sh == 0) | |
653 | sh = "sh"; | |
207bdbdb | 654 | |
86a5659e JB |
655 | /* Use our buffer's default directory for the subshell. */ |
656 | { | |
657 | Lisp_Object dir; | |
658 | unsigned char *str; | |
659 | int len; | |
660 | ||
661 | /* mentioning current_buffer->buffer would mean including buffer.h, | |
662 | which somehow wedges the hp compiler. So instead... */ | |
663 | ||
664 | dir = intern ("default-directory"); | |
207bdbdb | 665 | /* Can't use NILP */ |
86a5659e JB |
666 | if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil)) |
667 | goto xyzzy; | |
668 | dir = Fsymbol_value (dir); | |
669 | if (XTYPE (dir) != Lisp_String) | |
670 | goto xyzzy; | |
671 | ||
672 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
673 | len = XSTRING (dir)->size; | |
674 | bcopy (XSTRING (dir)->data, str, len); | |
675 | if (str[len - 1] != '/') str[len++] = '/'; | |
676 | str[len] = 0; | |
677 | chdir (str); | |
678 | } | |
679 | xyzzy: | |
680 | #ifdef subprocesses | |
681 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
682 | #endif | |
1593c2fe JB |
683 | |
684 | #ifdef PRIO_PROCESS | |
685 | { | |
686 | extern int emacs_priority; | |
687 | ||
688 | if (emacs_priority) | |
689 | nice (-emacs_priority); | |
690 | } | |
691 | #endif | |
692 | ||
207bdbdb RS |
693 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
694 | st = system (sh); | |
695 | chdir (oldwd); | |
696 | if (st) | |
697 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); | |
698 | #else /* not MSDOS */ | |
86a5659e JB |
699 | execlp (sh, sh, 0); |
700 | write (1, "Can't execute subshell", 22); | |
701 | _exit (1); | |
207bdbdb | 702 | #endif /* not MSDOS */ |
86a5659e JB |
703 | } |
704 | ||
705 | save_signal_handlers (saved_handlers); | |
ffafc793 | 706 | synch_process_alive = 1; |
86a5659e JB |
707 | wait_for_termination (pid); |
708 | restore_signal_handlers (saved_handlers); | |
709 | ||
710 | #endif /* no USG_JOBCTRL */ | |
711 | #endif /* no SIGTSTP */ | |
712 | #endif /* not VMS */ | |
713 | } | |
714 | ||
715 | save_signal_handlers (saved_handlers) | |
716 | struct save_signal *saved_handlers; | |
717 | { | |
718 | while (saved_handlers->code) | |
719 | { | |
508b171c JA |
720 | saved_handlers->handler |
721 | = (SIGTYPE (*) ()) signal (saved_handlers->code, SIG_IGN); | |
86a5659e JB |
722 | saved_handlers++; |
723 | } | |
724 | } | |
725 | ||
726 | restore_signal_handlers (saved_handlers) | |
727 | struct save_signal *saved_handlers; | |
728 | { | |
729 | while (saved_handlers->code) | |
730 | { | |
731 | signal (saved_handlers->code, saved_handlers->handler); | |
732 | saved_handlers++; | |
733 | } | |
734 | } | |
735 | \f | |
736 | #ifdef F_SETFL | |
737 | ||
738 | int old_fcntl_flags; | |
739 | ||
740 | init_sigio () | |
741 | { | |
742 | #ifdef FASYNC | |
64e971c3 | 743 | old_fcntl_flags = fcntl (input_fd, F_GETFL, 0) & ~FASYNC; |
86a5659e JB |
744 | #endif |
745 | request_sigio (); | |
746 | } | |
747 | ||
748 | reset_sigio () | |
749 | { | |
750 | unrequest_sigio (); | |
751 | } | |
752 | ||
eb8c3be9 | 753 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e JB |
754 | |
755 | request_sigio () | |
756 | { | |
757 | #ifdef SIGWINCH | |
e065a56e | 758 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 759 | #endif |
64e971c3 | 760 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
761 | |
762 | interrupts_deferred = 0; | |
763 | } | |
764 | ||
765 | unrequest_sigio () | |
766 | { | |
767 | #ifdef SIGWINCH | |
e065a56e | 768 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 769 | #endif |
64e971c3 | 770 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
771 | interrupts_deferred = 1; |
772 | } | |
773 | ||
774 | #else /* no FASYNC */ | |
775 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
776 | ||
777 | request_sigio () | |
778 | { | |
779 | int on = 1; | |
64e971c3 | 780 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
781 | interrupts_deferred = 0; |
782 | } | |
783 | ||
784 | unrequest_sigio () | |
785 | { | |
786 | int off = 0; | |
787 | ||
64e971c3 | 788 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
789 | interrupts_deferred = 1; |
790 | } | |
791 | ||
792 | #else /* not FASYNC, not STRIDE */ | |
793 | ||
794 | request_sigio () | |
795 | { | |
796 | croak ("request_sigio"); | |
797 | } | |
798 | ||
799 | unrequest_sigio () | |
800 | { | |
801 | croak ("unrequest_sigio"); | |
802 | } | |
803 | ||
804 | #endif /* STRIDE */ | |
805 | #endif /* FASYNC */ | |
806 | #endif /* F_SETFL */ | |
807 | \f | |
9ae8f997 JB |
808 | /* Saving and restoring the process group of Emacs's terminal. */ |
809 | ||
810 | #ifdef BSD | |
811 | ||
812 | /* The process group of which Emacs was a member when it initially | |
813 | started. | |
814 | ||
815 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
816 | getpid ()), then we know we're running under a shell with job | |
817 | control (Emacs would never be run as part of a pipeline). | |
818 | Everything is fine. | |
819 | ||
820 | If Emacs was not in its own process group, then we know we're | |
821 | running under a shell (or a caller) that doesn't know how to | |
822 | separate itself from Emacs (like sh). Emacs must be in its own | |
823 | process group in order to receive SIGIO correctly. In this | |
824 | situation, we put ourselves in our own pgroup, forcibly set the | |
825 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
826 | the tty's pgroup just like any other terminal setting. If | |
827 | inherited_group was not the tty's pgroup, then we'll get a | |
828 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
829 | it goes foreground in the future, which is what should happen. */ | |
830 | int inherited_pgroup; | |
831 | ||
832 | /* Split off the foreground process group to Emacs alone. | |
833 | When we are in the foreground, but not started in our own process | |
834 | group, redirect the TTY to point to our own process group. We need | |
835 | to be in our own process group to receive SIGIO properly. */ | |
836 | narrow_foreground_group () | |
837 | { | |
838 | int me = getpid (); | |
839 | ||
840 | setpgrp (0, inherited_pgroup); | |
841 | if (inherited_pgroup != me) | |
64e971c3 | 842 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
843 | setpgrp (0, me); |
844 | } | |
845 | ||
846 | /* Set the tty to our original foreground group. */ | |
847 | widen_foreground_group () | |
848 | { | |
849 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 850 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
851 | setpgrp (0, inherited_pgroup); |
852 | } | |
853 | ||
854 | #endif | |
855 | \f | |
68936329 JB |
856 | /* Getting and setting emacs_tty structures. */ |
857 | ||
858 | /* Set *TC to the parameters associated with the terminal FD. | |
859 | Return zero if all's well, or -1 if we ran into an error we | |
860 | couldn't deal with. */ | |
861 | int | |
862 | emacs_get_tty (fd, settings) | |
863 | int fd; | |
864 | struct emacs_tty *settings; | |
865 | { | |
866 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
867 | #ifdef HAVE_TCATTR | |
868 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
869 | if (tcgetattr (fd, &settings->main) < 0) | |
870 | return -1; | |
871 | ||
872 | #else | |
873 | #ifdef HAVE_TERMIO | |
874 | /* The SYSV-style interface? */ | |
875 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
876 | return -1; | |
877 | ||
878 | #else | |
879 | #ifdef VMS | |
880 | /* Vehemently Monstrous System? :-) */ | |
881 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
882 | &settings->main.class, 12, 0, 0, 0, 0) | |
883 | & 1)) | |
884 | return -1; | |
885 | ||
886 | #else | |
207bdbdb | 887 | #ifndef MSDOS |
68936329 JB |
888 | /* I give up - I hope you have the BSD ioctls. */ |
889 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
890 | return -1; | |
207bdbdb | 891 | #endif /* not MSDOS */ |
68936329 JB |
892 | #endif |
893 | #endif | |
894 | #endif | |
895 | ||
896 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 897 | #ifdef HAVE_LTCHARS |
68936329 JB |
898 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
899 | return -1; | |
900 | #endif | |
901 | ||
902 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 903 | #ifdef HAVE_TCHARS |
68936329 JB |
904 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
905 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
906 | return -1; | |
907 | #endif | |
908 | ||
909 | /* We have survived the tempest. */ | |
910 | return 0; | |
911 | } | |
912 | ||
913 | ||
914 | /* Set the parameters of the tty on FD according to the contents of | |
915 | *SETTINGS. If WAITP is non-zero, we wait for all queued output to | |
916 | be written before making the change; otherwise, we forget any | |
917 | queued input and make the change immediately. | |
918 | Return 0 if all went well, and -1 if anything failed. */ | |
919 | int | |
920 | emacs_set_tty (fd, settings, waitp) | |
921 | int fd; | |
922 | struct emacs_tty *settings; | |
923 | int waitp; | |
924 | { | |
925 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
926 | #ifdef HAVE_TCATTR | |
e6cc3307 | 927 | int i; |
68936329 JB |
928 | /* We have those nifty POSIX tcmumbleattr functions. |
929 | William J. Smith <wjs@wiis.wang.com> writes: | |
930 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
931 | able to perform any of the requested actions, even if some | |
932 | of the requested actions could not be performed. | |
933 | We must read settings back to ensure tty setup properly. | |
934 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 935 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 936 | for (i = 0 ; i < 10 ; i++) |
68936329 JB |
937 | if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
938 | { | |
939 | if (errno == EINTR) | |
940 | continue; | |
941 | else | |
942 | return -1; | |
943 | } | |
944 | else | |
945 | { | |
946 | struct termios new; | |
947 | ||
948 | /* Get the current settings, and see if they're what we asked for. */ | |
949 | tcgetattr (fd, &new); | |
e6cc3307 RS |
950 | /* We cannot use memcmp on the whole structure here because under |
951 | * aix386 the termios structure has some reserved field that may | |
952 | * not be filled in. | |
953 | */ | |
954 | if ( new.c_iflag == settings->main.c_iflag | |
955 | && new.c_oflag == settings->main.c_oflag | |
956 | && new.c_cflag == settings->main.c_cflag | |
957 | && new.c_lflag == settings->main.c_lflag | |
958 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 959 | break; |
e6cc3307 RS |
960 | else |
961 | continue; | |
68936329 JB |
962 | } |
963 | ||
964 | #else | |
965 | #ifdef HAVE_TERMIO | |
966 | /* The SYSV-style interface? */ | |
967 | if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0) | |
968 | return -1; | |
969 | ||
970 | #else | |
971 | #ifdef VMS | |
972 | /* Vehemently Monstrous System? :-) */ | |
973 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
974 | &settings->main.class, 12, 0, 0, 0, 0) | |
975 | & 1)) | |
976 | return -1; | |
977 | ||
978 | #else | |
207bdbdb | 979 | #ifndef MSDOS |
68936329 JB |
980 | /* I give up - I hope you have the BSD ioctls. */ |
981 | if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
982 | return -1; | |
207bdbdb | 983 | #endif /* not MSDOS */ |
68936329 JB |
984 | |
985 | #endif | |
986 | #endif | |
987 | #endif | |
988 | ||
989 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 990 | #ifdef HAVE_LTCHARS |
68936329 JB |
991 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
992 | return -1; | |
993 | #endif | |
994 | ||
995 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 996 | #ifdef HAVE_TCHARS |
68936329 JB |
997 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
998 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
999 | return -1; | |
1000 | #endif | |
1001 | ||
1002 | /* We have survived the tempest. */ | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | \f | |
91bac16a JB |
1007 | /* The initial tty mode bits */ |
1008 | struct emacs_tty old_tty; | |
86a5659e JB |
1009 | |
1010 | int term_initted; /* 1 if outer tty status has been recorded */ | |
1011 | ||
91bac16a JB |
1012 | #ifdef BSD4_1 |
1013 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1014 | sigio. */ | |
1015 | int lmode; | |
1016 | #endif | |
1017 | ||
46f2fdac | 1018 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1019 | #ifdef F_SETOWN |
1020 | int old_fcntl_owner; | |
1021 | #endif /* F_SETOWN */ | |
46f2fdac | 1022 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1023 | |
86a5659e JB |
1024 | /* This may also be defined in stdio, |
1025 | but if so, this does no harm, | |
1026 | and using the same name avoids wasting the other one's space. */ | |
1027 | ||
1028 | #if defined (USG) || defined (DGUX) | |
1029 | unsigned char _sobuf[BUFSIZ+8]; | |
1030 | #else | |
1031 | char _sobuf[BUFSIZ]; | |
1032 | #endif | |
1033 | ||
50b8cf60 | 1034 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1035 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1036 | #endif | |
50b8cf60 | 1037 | #ifdef HAVE_TCHARS |
86a5659e JB |
1038 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
1039 | #endif | |
1040 | ||
1041 | init_sys_modes () | |
1042 | { | |
91bac16a JB |
1043 | struct emacs_tty tty; |
1044 | ||
86a5659e JB |
1045 | #ifdef VMS |
1046 | #if 0 | |
1047 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1048 | extern int (*interrupt_signal) (); | |
1049 | #endif | |
1050 | #endif | |
1051 | ||
1052 | if (noninteractive) | |
1053 | return; | |
1054 | ||
1055 | #ifdef VMS | |
1056 | if (!input_ef) | |
1057 | input_ef = get_kbd_event_flag (); | |
1058 | /* LIB$GET_EF (&input_ef); */ | |
1059 | SYS$CLREF (input_ef); | |
1060 | waiting_for_ast = 0; | |
1061 | if (!timer_ef) | |
1062 | timer_ef = get_timer_event_flag (); | |
1063 | /* LIB$GET_EF (&timer_ef); */ | |
1064 | SYS$CLREF (timer_ef); | |
210b2b4f | 1065 | #if 0 |
86a5659e JB |
1066 | if (!process_ef) |
1067 | { | |
1068 | LIB$GET_EF (&process_ef); | |
1069 | SYS$CLREF (process_ef); | |
1070 | } | |
1071 | if (input_ef / 32 != process_ef / 32) | |
1072 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1073 | #endif |
86a5659e | 1074 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1075 | croak ("Input and timer event flags in different clusters."); |
1076 | #if 0 | |
86a5659e JB |
1077 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1078 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1079 | #endif |
86a5659e JB |
1080 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1081 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1082 | #ifndef VMS4_4 |
1083 | sys_access_reinit (); | |
1084 | #endif | |
86a5659e | 1085 | #endif /* not VMS */ |
91bac16a | 1086 | |
9ae8f997 JB |
1087 | #ifdef BSD |
1088 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
1089 | narrow_foreground_group (); | |
1090 | #endif | |
1091 | ||
91bac16a JB |
1092 | EMACS_GET_TTY (input_fd, &old_tty); |
1093 | ||
86a5659e JB |
1094 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
1095 | { | |
91bac16a | 1096 | tty = old_tty; |
86a5659e | 1097 | |
31be8d24 | 1098 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
1099 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1100 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
86a5659e | 1101 | #ifdef ISTRIP |
91bac16a | 1102 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1103 | #endif |
91bac16a JB |
1104 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1105 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 RS |
1106 | #ifdef IEXTEN |
1107 | tty.main.c_iflag &= ~IEXTEN; /* Disable other editing characters. */ | |
1108 | #endif | |
91bac16a | 1109 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1110 | if (flow_control) |
1111 | { | |
91bac16a | 1112 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1113 | #ifdef IXANY |
91bac16a | 1114 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1115 | #endif /* IXANY */ |
1116 | } | |
1117 | else | |
91bac16a JB |
1118 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1119 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1120 | on output */ | |
1121 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1122 | #ifdef CS8 |
1123 | if (meta_key) | |
1124 | { | |
91bac16a JB |
1125 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1126 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1127 | } |
1128 | #endif | |
91bac16a | 1129 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1130 | /* Set up C-g for both SIGQUIT and SIGINT. |
1131 | We don't know which we will get, but we handle both alike | |
1132 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1133 | tty.main.c_cc[VQUIT] = quit_char; |
1134 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1135 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1136 | #ifdef VSWTCH |
e2b40c23 | 1137 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1138 | of C-z */ |
86a5659e JB |
1139 | #endif /* VSWTCH */ |
1140 | #if defined (mips) || defined (HAVE_TCATTR) | |
86a5659e | 1141 | #ifdef VSUSP |
e2b40c23 | 1142 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1143 | #endif /* VSUSP */ |
1144 | #ifdef V_DSUSP | |
e2b40c23 | 1145 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1146 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1147 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1148 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1149 | #endif /* VDSUSP */ | |
92c995de RS |
1150 | #ifdef VLNEXT |
1151 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1152 | #endif /* VLNEXT */ | |
1153 | #ifdef VREPRINT | |
1154 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1155 | #endif /* VREPRINT */ | |
1156 | #ifdef VWERASE | |
1157 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1158 | #endif /* VWERASE */ | |
1159 | #ifdef VDISCARD | |
1160 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1161 | #endif /* VDISCARD */ | |
86a5659e JB |
1162 | #endif /* mips or HAVE_TCATTR */ |
1163 | #ifdef AIX | |
1164 | #ifndef IBMR2AIX | |
1165 | /* AIX enhanced edit loses NULs, so disable it */ | |
91bac16a JB |
1166 | tty.main.c_line = 0; |
1167 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1168 | #else |
91bac16a JB |
1169 | tty.main.c_cc[VSTRT] = 255; |
1170 | tty.main.c_cc[VSTOP] = 255; | |
1171 | tty.main.c_cc[VSUSP] = 255; | |
1172 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e JB |
1173 | #endif /* IBMR2AIX */ |
1174 | /* Also, PTY overloads NUL and BREAK. | |
1175 | don't ignore break, but don't signal either, so it looks like NUL. | |
1176 | This really serves a purpose only if running in an XTERM window | |
1177 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1178 | tty.main.c_iflag &= ~IGNBRK; |
1179 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1180 | #endif |
1181 | #else /* if not HAVE_TERMIO */ | |
1182 | #ifdef VMS | |
91bac16a | 1183 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1184 | if (meta_key) |
986ffb24 | 1185 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1186 | if (flow_control) |
91bac16a | 1187 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1188 | else |
91bac16a JB |
1189 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1190 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1191 | #else /* not VMS (BSD, that is) */ |
207bdbdb | 1192 | #ifndef MSDOS |
91bac16a | 1193 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1194 | if (meta_key) |
91bac16a JB |
1195 | tty.main.sg_flags |= ANYP; |
1196 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
207bdbdb | 1197 | #endif |
86a5659e JB |
1198 | #endif /* not VMS (BSD, that is) */ |
1199 | #endif /* not HAVE_TERMIO */ | |
1200 | ||
91bac16a JB |
1201 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1202 | and turn off start and stop chars, etc. If not going to use | |
1203 | CBREAK mode, do this anyway so as to turn off local flow | |
1204 | control for user coming over network on 4.2; in this case, | |
1205 | only t_stopc and t_startc really matter. */ | |
1206 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1207 | #ifdef HAVE_TCHARS |
91bac16a JB |
1208 | /* Note: if not using CBREAK mode, it makes no difference how we |
1209 | set this */ | |
1210 | tty.tchars = new_tchars; | |
1211 | tty.tchars.t_intrc = quit_char; | |
1212 | if (flow_control) | |
1213 | { | |
1214 | tty.tchars.t_startc = '\021'; | |
1215 | tty.tchars.t_stopc = '\023'; | |
1216 | } | |
1217 | ||
91bac16a | 1218 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1219 | #ifdef ultrix |
1220 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1221 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1222 | tty.lmode &= ~LLITOUT; | |
1223 | #endif | |
91bac16a JB |
1224 | |
1225 | #ifdef BSD4_1 | |
1226 | lmode = tty.lmode; | |
1227 | #endif | |
1228 | ||
50b8cf60 | 1229 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1230 | #endif /* not HAVE_TERMIO */ |
1231 | ||
50b8cf60 | 1232 | #ifdef HAVE_LTCHARS |
91bac16a | 1233 | tty.ltchars = new_ltchars; |
50b8cf60 | 1234 | #endif /* HAVE_LTCHARS */ |
207bdbdb RS |
1235 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
1236 | internal_terminal_init (); | |
1237 | dos_ttraw (); | |
1238 | #endif | |
91bac16a JB |
1239 | |
1240 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1241 | |
1242 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1243 | we have an unlocked terminal at the start. */ |
91bac16a | 1244 | |
86a5659e | 1245 | #ifdef TCXONC |
64e971c3 | 1246 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1247 | #endif |
1248 | #ifndef APOLLO | |
1249 | #ifdef TIOCSTART | |
64e971c3 | 1250 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1251 | #endif |
1252 | #endif | |
1253 | ||
1254 | #ifdef AIX | |
1255 | hft_init (); | |
1256 | #ifdef IBMR2AIX | |
1257 | { | |
1258 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1259 | to be only LF. This is the way that is done. */ | |
1260 | struct termio tty; | |
1261 | ||
1262 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1263 | write (1, "\033[20l", 5); | |
1264 | } | |
1265 | #endif | |
1266 | #endif | |
1267 | ||
86a5659e JB |
1268 | #ifdef VMS |
1269 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1270 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1271 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1272 | */ | |
1273 | queue_kbd_input (0); | |
1274 | #endif /* VMS */ | |
1275 | } | |
1276 | ||
1277 | #ifdef F_SETFL | |
46f2fdac | 1278 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1279 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
86a5659e JB |
1280 | if (interrupt_input) |
1281 | { | |
64e971c3 RS |
1282 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1283 | fcntl (input_fd, F_SETOWN, getpid ()); | |
86a5659e JB |
1284 | init_sigio (); |
1285 | } | |
1286 | #endif /* F_GETOWN */ | |
46f2fdac | 1287 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1288 | #endif /* F_SETFL */ |
1289 | ||
1290 | #ifdef BSD4_1 | |
1291 | if (interrupt_input) | |
1292 | init_sigio (); | |
1293 | #endif | |
1294 | ||
1295 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1296 | #undef _IOFBF | |
1297 | #endif | |
1298 | #ifdef _IOFBF | |
1299 | /* This symbol is defined on recent USG systems. | |
1300 | Someone says without this call USG won't really buffer the file | |
1301 | even with a call to setbuf. */ | |
1302 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1303 | #else | |
1304 | setbuf (stdout, _sobuf); | |
1305 | #endif | |
1306 | set_terminal_modes (); | |
1307 | if (term_initted && no_redraw_on_reenter) | |
1308 | { | |
1309 | if (display_completed) | |
1310 | direct_output_forward_char (0); | |
1311 | } | |
1312 | else | |
1313 | { | |
0137dbf7 JB |
1314 | frame_garbaged = 1; |
1315 | #ifdef MULTI_FRAME | |
1316 | if (FRAMEP (Vterminal_frame)) | |
1317 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e JB |
1318 | #endif |
1319 | } | |
91bac16a | 1320 | |
86a5659e JB |
1321 | term_initted = 1; |
1322 | } | |
1323 | ||
1324 | /* Return nonzero if safe to use tabs in output. | |
1325 | At the time this is called, init_sys_modes has not been done yet. */ | |
1326 | ||
1327 | tabs_safe_p () | |
1328 | { | |
91bac16a JB |
1329 | struct emacs_tty tty; |
1330 | ||
1331 | EMACS_GET_TTY (input_fd, &tty); | |
1332 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e JB |
1333 | } |
1334 | ||
1335 | /* Get terminal size from system. | |
1336 | Store number of lines into *heightp and width into *widthp. | |
1337 | If zero or a negative number is stored, the value is not valid. */ | |
1338 | ||
0137dbf7 | 1339 | get_frame_size (widthp, heightp) |
86a5659e JB |
1340 | int *widthp, *heightp; |
1341 | { | |
86a5659e | 1342 | |
86a5659e | 1343 | #ifdef TIOCGWINSZ |
91bac16a JB |
1344 | |
1345 | /* BSD-style. */ | |
86a5659e | 1346 | struct winsize size; |
91bac16a JB |
1347 | |
1348 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1349 | *widthp = *heightp = 0; | |
1350 | else | |
1351 | { | |
1352 | *widthp = size.ws_col; | |
1353 | *heightp = size.ws_row; | |
1354 | } | |
1355 | ||
1356 | #else | |
1357 | #ifdef TIOCGSIZE | |
1358 | ||
1359 | /* SunOS - style. */ | |
1360 | struct ttysize size; | |
1361 | ||
1362 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1363 | *widthp = *heightp = 0; | |
1364 | else | |
1365 | { | |
1366 | *widthp = size.ts_cols; | |
1367 | *heightp = size.ts_lines; | |
1368 | } | |
1369 | ||
1370 | #else | |
86a5659e | 1371 | #ifdef VMS |
91bac16a JB |
1372 | |
1373 | struct sensemode tty; | |
1374 | ||
1375 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1376 | &tty.class, 12, 0, 0, 0, 0); |
1377 | *widthp = tty.scr_wid; | |
1378 | *heightp = tty.scr_len; | |
91bac16a | 1379 | |
207bdbdb RS |
1380 | #else |
1381 | #ifdef MSDOS | |
1382 | *widthp = ScreenCols (); | |
1383 | *heightp = ScreenRows (); | |
86a5659e JB |
1384 | #else /* system doesn't know size */ |
1385 | *widthp = 0; | |
1386 | *heightp = 0; | |
207bdbdb | 1387 | #endif |
91bac16a JB |
1388 | |
1389 | #endif /* not VMS */ | |
1390 | #endif /* not SunOS-style */ | |
1391 | #endif /* not BSD-style */ | |
86a5659e | 1392 | } |
91bac16a | 1393 | |
86a5659e | 1394 | \f |
91bac16a | 1395 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1396 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
86a5659e JB |
1397 | reset_sys_modes () |
1398 | { | |
1399 | if (noninteractive) | |
1400 | { | |
1401 | fflush (stdout); | |
1402 | return; | |
1403 | } | |
1404 | if (!term_initted) | |
1405 | return; | |
1406 | if (read_socket_hook || !EQ (Vwindow_system, Qnil)) | |
1407 | return; | |
0137dbf7 JB |
1408 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1409 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1410 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1411 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
86a5659e JB |
1412 | #ifdef IBMR2AIX |
1413 | { | |
1414 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1415 | do the LF only. Now, we need to reset it. */ | |
1416 | struct termio tty; | |
1417 | ||
1418 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1419 | write (1, "\033[20h", 5); | |
1420 | } | |
1421 | #endif | |
1422 | ||
1423 | reset_terminal_modes (); | |
1424 | fflush (stdout); | |
1425 | #ifdef BSD | |
1426 | #ifndef BSD4_1 | |
1427 | /* Avoid possible loss of output when changing terminal modes. */ | |
1428 | fsync (fileno (stdout)); | |
1429 | #endif | |
1430 | #endif | |
91bac16a | 1431 | |
86a5659e | 1432 | #ifdef F_SETFL |
46f2fdac | 1433 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1434 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1435 | if (interrupt_input) |
1436 | { | |
1437 | reset_sigio (); | |
64e971c3 | 1438 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1439 | } |
1440 | #endif /* F_SETOWN */ | |
46f2fdac | 1441 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1442 | #endif /* F_SETFL */ |
1443 | #ifdef BSD4_1 | |
1444 | if (interrupt_input) | |
1445 | reset_sigio (); | |
1446 | #endif /* BSD4_1 */ | |
91bac16a | 1447 | |
1334b321 | 1448 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) |
91bac16a | 1449 | ; |
86a5659e | 1450 | |
207bdbdb RS |
1451 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1452 | dos_ttcooked (); | |
1453 | #endif | |
1454 | ||
86a5659e JB |
1455 | #ifdef AIX |
1456 | hft_reset (); | |
1457 | #endif | |
9ae8f997 JB |
1458 | |
1459 | #ifdef BSD | |
1460 | widen_foreground_group (); | |
1461 | #endif | |
86a5659e JB |
1462 | } |
1463 | \f | |
1464 | #ifdef HAVE_PTYS | |
1465 | ||
1466 | /* Set up the proper status flags for use of a pty. */ | |
1467 | ||
1468 | setup_pty (fd) | |
1469 | int fd; | |
1470 | { | |
1471 | /* I'm told that TOICREMOTE does not mean control chars | |
1472 | "can't be sent" but rather that they don't have | |
1473 | input-editing or signaling effects. | |
1474 | That should be good, because we have other ways | |
1475 | to do those things in Emacs. | |
1476 | However, telnet mode seems not to work on 4.2. | |
1477 | So TIOCREMOTE is turned off now. */ | |
1478 | ||
1479 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1480 | will hang. In particular, the "timeout" feature (which | |
1481 | causes a read to return if there is no data available) | |
1482 | does this. Also it is known that telnet mode will hang | |
1483 | in such a way that Emacs must be stopped (perhaps this | |
1484 | is the same problem). | |
1485 | ||
1486 | If TIOCREMOTE is turned off, then there is a bug in | |
1487 | hp-ux which sometimes loses data. Apparently the | |
1488 | code which blocks the master process when the internal | |
1489 | buffer fills up does not work. Other than this, | |
1490 | though, everything else seems to work fine. | |
1491 | ||
1492 | Since the latter lossage is more benign, we may as well | |
1493 | lose that way. -- cph */ | |
1494 | #ifdef FIONBIO | |
1495 | #ifdef SYSV_PTYS | |
1496 | { | |
1497 | int on = 1; | |
1498 | ioctl (fd, FIONBIO, &on); | |
1499 | } | |
1500 | #endif | |
1501 | #endif | |
1502 | #ifdef IBMRTAIX | |
1503 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1504 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1505 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1506 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1507 | /* change this behavior, but I'm not going to hold my breath. */ | |
1508 | signal (SIGHUP, SIG_IGN); | |
1509 | #endif | |
1510 | } | |
1511 | #endif /* HAVE_PTYS */ | |
1512 | \f | |
1513 | #ifdef VMS | |
1514 | ||
1515 | /* Assigning an input channel is done at the start of Emacs execution. | |
1516 | This is called each time Emacs is resumed, also, but does nothing | |
1517 | because input_chain is no longer zero. */ | |
1518 | ||
1519 | init_vms_input () | |
1520 | { | |
1521 | int status; | |
1522 | ||
91bac16a | 1523 | if (input_fd == 0) |
86a5659e | 1524 | { |
91bac16a | 1525 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1526 | if (! (status & 1)) |
1527 | LIB$STOP (status); | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | /* Deassigning the input channel is done before exiting. */ | |
1532 | ||
1533 | stop_vms_input () | |
1534 | { | |
91bac16a | 1535 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1536 | } |
1537 | ||
1538 | short input_buffer; | |
1539 | ||
1540 | /* Request reading one character into the keyboard buffer. | |
1541 | This is done as soon as the buffer becomes empty. */ | |
1542 | ||
1543 | queue_kbd_input () | |
1544 | { | |
1545 | int status; | |
210b2b4f JB |
1546 | extern kbd_input_ast (); |
1547 | ||
86a5659e JB |
1548 | waiting_for_ast = 0; |
1549 | stop_input = 0; | |
91bac16a | 1550 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1551 | &input_iosb, kbd_input_ast, 1, |
1552 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1553 | } | |
1554 | ||
1555 | int input_count; | |
1556 | ||
1557 | /* Ast routine that is called when keyboard input comes in | |
1558 | in accord with the SYS$QIO above. */ | |
1559 | ||
1560 | kbd_input_ast () | |
1561 | { | |
1562 | register int c = -1; | |
1563 | int old_errno = errno; | |
ffd56f97 | 1564 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1565 | |
1566 | if (waiting_for_ast) | |
1567 | SYS$SETEF (input_ef); | |
1568 | waiting_for_ast = 0; | |
1569 | input_count++; | |
1570 | #ifdef ASTDEBUG | |
1571 | if (input_count == 25) | |
1572 | exit (1); | |
1573 | printf ("Ast # %d,", input_count); | |
1574 | printf (" iosb = %x, %x, %x, %x", | |
1575 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1576 | input_iosb.term); | |
1577 | #endif | |
1578 | if (input_iosb.offset) | |
1579 | { | |
1580 | c = input_buffer; | |
1581 | #ifdef ASTDEBUG | |
1582 | printf (", char = 0%o", c); | |
1583 | #endif | |
1584 | } | |
1585 | #ifdef ASTDEBUG | |
1586 | printf ("\n"); | |
1587 | fflush (stdout); | |
1588 | sleep (1); | |
1589 | #endif | |
1590 | if (! stop_input) | |
1591 | queue_kbd_input (); | |
1592 | if (c >= 0) | |
1593 | { | |
1594 | struct input_event e; | |
1595 | e.kind = ascii_keystroke; | |
210b2b4f JB |
1596 | XSET (e.code, Lisp_Int, c); |
1597 | #ifdef MULTI_FRAME | |
1598 | XSET(e.frame_or_window, Lisp_Frame, selected_frame); | |
1599 | #else | |
1600 | e.frame_or_window = Qnil; | |
1601 | #endif | |
86a5659e JB |
1602 | kbd_buffer_store_event (&e); |
1603 | } | |
ffd56f97 JB |
1604 | if (input_available_clear_time) |
1605 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1606 | errno = old_errno; |
1607 | } | |
1608 | ||
1609 | /* Wait until there is something in kbd_buffer. */ | |
1610 | ||
1611 | wait_for_kbd_input () | |
1612 | { | |
1613 | extern int have_process_input, process_exited; | |
1614 | ||
1615 | /* If already something, avoid doing system calls. */ | |
1616 | if (detect_input_pending ()) | |
1617 | { | |
1618 | return; | |
1619 | } | |
1620 | /* Clear a flag, and tell ast routine above to set it. */ | |
1621 | SYS$CLREF (input_ef); | |
1622 | waiting_for_ast = 1; | |
1623 | /* Check for timing error: ast happened while we were doing that. */ | |
1624 | if (!detect_input_pending ()) | |
1625 | { | |
1626 | /* No timing error: wait for flag to be set. */ | |
1627 | set_waiting_for_input (0); | |
1628 | SYS$WFLOR (input_ef, input_eflist); | |
1629 | clear_waiting_for_input (0); | |
1630 | if (!detect_input_pending ()) | |
1631 | /* Check for subprocess input availability */ | |
1632 | { | |
1633 | int dsp = have_process_input || process_exited; | |
1634 | ||
1635 | SYS$CLREF (process_ef); | |
1636 | if (have_process_input) | |
1637 | process_command_input (); | |
1638 | if (process_exited) | |
1639 | process_exit (); | |
1640 | if (dsp) | |
1641 | { | |
1642 | update_mode_lines++; | |
56b18525 | 1643 | prepare_menu_bars (); |
86a5659e JB |
1644 | redisplay_preserve_echo_area (); |
1645 | } | |
1646 | } | |
1647 | } | |
1648 | waiting_for_ast = 0; | |
1649 | } | |
1650 | ||
1651 | /* Get rid of any pending QIO, when we are about to suspend | |
1652 | or when we want to throw away pending input. | |
1653 | We wait for a positive sign that the AST routine has run | |
1654 | and therefore there is no I/O request queued when we return. | |
1655 | SYS$SETAST is used to avoid a timing error. */ | |
1656 | ||
1657 | end_kbd_input () | |
1658 | { | |
1659 | #ifdef ASTDEBUG | |
1660 | printf ("At end_kbd_input.\n"); | |
1661 | fflush (stdout); | |
1662 | sleep (1); | |
1663 | #endif | |
1664 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
1665 | { | |
91bac16a | 1666 | SYS$CANCEL (input_fd); |
86a5659e JB |
1667 | return; |
1668 | } | |
1669 | ||
1670 | SYS$SETAST (0); | |
1671 | /* Clear a flag, and tell ast routine above to set it. */ | |
1672 | SYS$CLREF (input_ef); | |
1673 | waiting_for_ast = 1; | |
1674 | stop_input = 1; | |
91bac16a | 1675 | SYS$CANCEL (input_fd); |
86a5659e JB |
1676 | SYS$SETAST (1); |
1677 | SYS$WAITFR (input_ef); | |
1678 | waiting_for_ast = 0; | |
1679 | } | |
1680 | ||
1681 | /* Wait for either input available or time interval expiry. */ | |
1682 | ||
1683 | input_wait_timeout (timeval) | |
1684 | int timeval; /* Time to wait, in seconds */ | |
1685 | { | |
1686 | int time [2]; | |
1687 | static int zero = 0; | |
1688 | static int large = -10000000; | |
1689 | ||
1690 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1691 | ||
1692 | /* If already something, avoid doing system calls. */ | |
1693 | if (detect_input_pending ()) | |
1694 | { | |
1695 | return; | |
1696 | } | |
1697 | /* Clear a flag, and tell ast routine above to set it. */ | |
1698 | SYS$CLREF (input_ef); | |
1699 | waiting_for_ast = 1; | |
1700 | /* Check for timing error: ast happened while we were doing that. */ | |
1701 | if (!detect_input_pending ()) | |
1702 | { | |
1703 | /* No timing error: wait for flag to be set. */ | |
1704 | SYS$CANTIM (1, 0); | |
1705 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1706 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
1707 | } | |
1708 | waiting_for_ast = 0; | |
1709 | } | |
1710 | ||
1711 | /* The standard `sleep' routine works some other way | |
1712 | and it stops working if you have ever quit out of it. | |
1713 | This one continues to work. */ | |
1714 | ||
1715 | sys_sleep (timeval) | |
1716 | int timeval; | |
1717 | { | |
1718 | int time [2]; | |
1719 | static int zero = 0; | |
1720 | static int large = -10000000; | |
1721 | ||
1722 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1723 | ||
1724 | SYS$CANTIM (1, 0); | |
1725 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1726 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
1727 | } | |
1728 | ||
1729 | init_sigio () | |
1730 | { | |
1731 | request_sigio (); | |
1732 | } | |
1733 | ||
1734 | reset_sigio () | |
1735 | { | |
1736 | unrequest_sigio (); | |
1737 | } | |
1738 | ||
1739 | request_sigio () | |
1740 | { | |
1741 | croak ("request sigio"); | |
1742 | } | |
1743 | ||
1744 | unrequest_sigio () | |
1745 | { | |
1746 | croak ("unrequest sigio"); | |
1747 | } | |
1748 | ||
1749 | #endif /* VMS */ | |
1750 | \f | |
1751 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
1752 | #ifndef CANNOT_DUMP | |
1753 | #define NEED_STARTS | |
1754 | #endif | |
1755 | ||
1756 | #ifndef SYSTEM_MALLOC | |
1757 | #ifndef NEED_STARTS | |
1758 | #define NEED_STARTS | |
1759 | #endif | |
1760 | #endif | |
1761 | ||
1762 | #ifdef NEED_STARTS | |
1763 | /* Some systems that cannot dump also cannot implement these. */ | |
1764 | ||
1765 | /* | |
1766 | * Return the address of the start of the text segment prior to | |
1767 | * doing an unexec. After unexec the return value is undefined. | |
1768 | * See crt0.c for further explanation and _start. | |
1769 | * | |
1770 | */ | |
1771 | ||
1772 | #ifndef CANNOT_UNEXEC | |
1773 | char * | |
1774 | start_of_text () | |
1775 | { | |
1776 | #ifdef TEXT_START | |
1777 | return ((char *) TEXT_START); | |
1778 | #else | |
1779 | #ifdef GOULD | |
1780 | extern csrt (); | |
1781 | return ((char *) csrt); | |
1782 | #else /* not GOULD */ | |
1783 | extern int _start (); | |
1784 | return ((char *) _start); | |
1785 | #endif /* GOULD */ | |
1786 | #endif /* TEXT_START */ | |
1787 | } | |
1788 | #endif /* not CANNOT_UNEXEC */ | |
1789 | ||
1790 | /* | |
1791 | * Return the address of the start of the data segment prior to | |
1792 | * doing an unexec. After unexec the return value is undefined. | |
1793 | * See crt0.c for further information and definition of data_start. | |
1794 | * | |
1795 | * Apparently, on BSD systems this is etext at startup. On | |
1796 | * USG systems (swapping) this is highly mmu dependent and | |
1797 | * is also dependent on whether or not the program is running | |
1798 | * with shared text. Generally there is a (possibly large) | |
1799 | * gap between end of text and start of data with shared text. | |
1800 | * | |
1801 | * On Uniplus+ systems with shared text, data starts at a | |
1802 | * fixed address. Each port (from a given oem) is generally | |
1803 | * different, and the specific value of the start of data can | |
1804 | * be obtained via the UniPlus+ specific "uvar" system call, | |
1805 | * however the method outlined in crt0.c seems to be more portable. | |
1806 | * | |
1807 | * Probably what will have to happen when a USG unexec is available, | |
1808 | * at least on UniPlus, is temacs will have to be made unshared so | |
1809 | * that text and data are contiguous. Then once loadup is complete, | |
1810 | * unexec will produce a shared executable where the data can be | |
1811 | * at the normal shared text boundry and the startofdata variable | |
1812 | * will be patched by unexec to the correct value. | |
1813 | * | |
1814 | */ | |
1815 | ||
1816 | char * | |
1817 | start_of_data () | |
1818 | { | |
1819 | #ifdef DATA_START | |
1820 | return ((char *) DATA_START); | |
6c65530f JB |
1821 | #else |
1822 | #ifdef ORDINARY_LINK | |
1823 | /* | |
1824 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
1825 | * data_start isn't defined. We take the address of environ, which | |
1826 | * is known to live at or near the start of the system crt0.c, and | |
1827 | * we don't sweat the handful of bytes that might lose. | |
1828 | */ | |
1829 | extern char **environ; | |
1830 | ||
1831 | return((char *) &environ); | |
86a5659e JB |
1832 | #else |
1833 | extern int data_start; | |
1834 | return ((char *) &data_start); | |
6c65530f JB |
1835 | #endif /* ORDINARY_LINK */ |
1836 | #endif /* DATA_START */ | |
86a5659e JB |
1837 | } |
1838 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
1839 | ||
1840 | #ifndef CANNOT_DUMP | |
1841 | /* Some systems that cannot dump also cannot implement these. */ | |
1842 | ||
1843 | /* | |
1844 | * Return the address of the end of the text segment prior to | |
1845 | * doing an unexec. After unexec the return value is undefined. | |
1846 | */ | |
1847 | ||
1848 | char * | |
1849 | end_of_text () | |
1850 | { | |
1851 | #ifdef TEXT_END | |
1852 | return ((char *) TEXT_END); | |
1853 | #else | |
1854 | extern int etext; | |
1855 | return ((char *) &etext); | |
1856 | #endif | |
1857 | } | |
1858 | ||
1859 | /* | |
1860 | * Return the address of the end of the data segment prior to | |
1861 | * doing an unexec. After unexec the return value is undefined. | |
1862 | */ | |
1863 | ||
1864 | char * | |
1865 | end_of_data () | |
1866 | { | |
1867 | #ifdef DATA_END | |
1868 | return ((char *) DATA_END); | |
1869 | #else | |
1870 | extern int edata; | |
1871 | return ((char *) &edata); | |
1872 | #endif | |
1873 | } | |
1874 | ||
1875 | #endif /* not CANNOT_DUMP */ | |
1876 | \f | |
1877 | /* Get_system_name returns as its value | |
1878 | a string for the Lisp function system-name to return. */ | |
1879 | ||
1880 | #ifdef BSD4_1 | |
1881 | #include <whoami.h> | |
1882 | #endif | |
1883 | ||
e36ba278 RS |
1884 | /* Can't have this within the function since `static' is #defined to |
1885 | nothing for some USG systems. */ | |
86a5659e | 1886 | #ifdef USG |
e36ba278 RS |
1887 | #ifdef HAVE_GETHOSTNAME |
1888 | static char get_system_name_name[256]; | |
1889 | #else /* not HAVE_GETHOSTNAME */ | |
86a5659e | 1890 | static struct utsname get_system_name_name; |
e36ba278 RS |
1891 | #endif /* not HAVE_GETHOSTNAME */ |
1892 | #endif /* USG */ | |
86a5659e | 1893 | |
f8a80313 RS |
1894 | #ifndef BSD4_1 |
1895 | #ifndef USG | |
1896 | #ifndef VMS | |
1897 | #ifdef HAVE_SOCKETS | |
1898 | #include <sys/socket.h> | |
1899 | #include <netdb.h> | |
1900 | #endif /* HAVE_SOCKETS */ | |
1901 | #endif /* not VMS */ | |
1902 | #endif /* not USG */ | |
1903 | #endif /* not BSD4_1 */ | |
1904 | ||
86a5659e JB |
1905 | char * |
1906 | get_system_name () | |
1907 | { | |
1908 | #ifdef USG | |
e36ba278 RS |
1909 | #ifdef HAVE_GETHOSTNAME |
1910 | gethostname (get_system_name_name, sizeof (get_system_name_name)); | |
1911 | return get_system_name_name; | |
1912 | #else /* not HAVE_GETHOSTNAME */ | |
86a5659e JB |
1913 | uname (&get_system_name_name); |
1914 | return (get_system_name_name.nodename); | |
e36ba278 | 1915 | #endif /* not HAVE_GETHOSTNAME */ |
86a5659e JB |
1916 | #else /* Not USG */ |
1917 | #ifdef BSD4_1 | |
1918 | return sysname; | |
1919 | #else /* not USG, not 4.1 */ | |
1920 | static char system_name_saved[32]; | |
1921 | #ifdef VMS | |
1922 | char *sp; | |
1923 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
1924 | sp = "vax-vms"; | |
1925 | else | |
1926 | { | |
1927 | char *end; | |
1928 | ||
1929 | if ((end = index (sp, ':')) != 0) | |
1930 | *end = '\0'; | |
1931 | } | |
1932 | strcpy (system_name_saved, sp); | |
1933 | #else /* not VMS */ | |
1934 | gethostname (system_name_saved, sizeof (system_name_saved)); | |
f8a80313 RS |
1935 | #ifdef HAVE_SOCKETS |
1936 | /* Turn the hostname into the official, fully-qualified hostname. | |
1937 | Don't do this if we're going to dump; this can confuse system | |
1938 | libraries on some machines and make the dumped emacs core dump. */ | |
1939 | #ifndef CANNOT_DUMP | |
1940 | if (initialized) | |
1941 | #endif /* not CANNOT_DUMP */ | |
1942 | { | |
1943 | struct hostent *hp; | |
1944 | hp = gethostbyname (system_name_saved); | |
1945 | if (hp && strlen (hp->h_name) < sizeof(system_name_saved)) | |
1946 | strcpy (system_name_saved, hp->h_name); | |
4f8804a1 RS |
1947 | if (hp && !index (system_name_saved, '.')) |
1948 | { | |
1949 | /* We still don't have a fully qualified domain name. | |
1950 | Try to find one in the list of alternate names */ | |
1951 | char **alias = hp->h_aliases; | |
1952 | while (*alias && !index (*alias, '.')) | |
1953 | alias++; | |
1954 | if (*alias && strlen (*alias) < sizeof (system_name_saved)) | |
1955 | strcpy (system_name_saved, *alias); | |
1956 | } | |
f8a80313 RS |
1957 | } |
1958 | #endif /* HAVE_SOCKETS */ | |
86a5659e JB |
1959 | #endif /* not VMS */ |
1960 | return system_name_saved; | |
1961 | #endif /* not USG, not 4.1 */ | |
1962 | #endif /* not USG */ | |
1963 | } | |
210b2b4f JB |
1964 | |
1965 | #ifdef VMS | |
1966 | #ifndef HAVE_GETHOSTNAME | |
1967 | void gethostname(buf, len) | |
1968 | char *buf; | |
1969 | int len; | |
1970 | { | |
1971 | char *s; | |
1972 | s = getenv ("SYS$NODE"); | |
1973 | if (s == NULL) | |
1974 | buf[0] = '\0'; | |
1975 | else { | |
1976 | strncpy (buf, s, len - 2); | |
1977 | buf[len - 1] = '\0'; | |
1978 | } /* else */ | |
1979 | } /* static void gethostname */ | |
1980 | #endif /* ! HAVE_GETHOSTNAME */ | |
1981 | #endif /* VMS */ | |
1982 | ||
86a5659e JB |
1983 | \f |
1984 | #ifndef VMS | |
1985 | #ifndef HAVE_SELECT | |
1986 | ||
1987 | #ifdef HAVE_X_WINDOWS | |
1988 | /* Cause explanatory error message at compile time, | |
1989 | since the select emulation is not good enough for X. */ | |
1990 | int *x = &x_windows_lose_if_no_select_system_call; | |
1991 | #endif | |
1992 | ||
1993 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
1994 | * Only checks read descriptors. | |
1995 | */ | |
1996 | /* How long to wait between checking fds in select */ | |
1997 | #define SELECT_PAUSE 1 | |
1998 | int select_alarmed; | |
1999 | ||
2000 | /* For longjmp'ing back to read_input_waiting. */ | |
2001 | ||
2002 | jmp_buf read_alarm_throw; | |
2003 | ||
2004 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2005 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2006 | ||
2007 | int read_alarm_should_throw; | |
2008 | ||
2009 | SIGTYPE | |
2010 | select_alarm () | |
2011 | { | |
2012 | select_alarmed = 1; | |
2013 | #ifdef BSD4_1 | |
2014 | sigrelse (SIGALRM); | |
2015 | #else /* not BSD4_1 */ | |
2016 | signal (SIGALRM, SIG_IGN); | |
2017 | #endif /* not BSD4_1 */ | |
2018 | if (read_alarm_should_throw) | |
2019 | longjmp (read_alarm_throw, 1); | |
2020 | } | |
2021 | ||
2022 | /* Only rfds are checked. */ | |
2023 | int | |
2024 | select (nfds, rfds, wfds, efds, timeout) | |
2025 | int nfds; | |
2026 | int *rfds, *wfds, *efds, *timeout; | |
2027 | { | |
2028 | int ravail = 0, orfds = 0, old_alarm; | |
2029 | int timeoutval = timeout ? *timeout : 100000; | |
2030 | int *local_timeout = &timeoutval; | |
2031 | extern int proc_buffered_char[]; | |
2032 | #ifndef subprocesses | |
2033 | int process_tick = 0, update_tick = 0; | |
2034 | #else | |
2035 | extern int process_tick, update_tick; | |
2036 | #endif | |
2037 | SIGTYPE (*old_trap) (); | |
2038 | unsigned char buf; | |
2039 | ||
2040 | if (rfds) | |
2041 | { | |
2042 | orfds = *rfds; | |
2043 | *rfds = 0; | |
2044 | } | |
2045 | if (wfds) | |
2046 | *wfds = 0; | |
2047 | if (efds) | |
2048 | *efds = 0; | |
2049 | ||
2050 | /* If we are looking only for the terminal, with no timeout, | |
2051 | just read it and wait -- that's more efficient. */ | |
2052 | if (orfds == 1 && *local_timeout == 100000 && process_tick == update_tick) | |
2053 | { | |
2054 | if (! detect_input_pending ()) | |
2055 | read_input_waiting (); | |
2056 | *rfds = 1; | |
2057 | return 1; | |
2058 | } | |
2059 | ||
2060 | /* Once a second, till the timer expires, check all the flagged read | |
2061 | * descriptors to see if any input is available. If there is some then | |
2062 | * set the corresponding bit in the return copy of rfds. | |
2063 | */ | |
2064 | while (1) | |
2065 | { | |
2066 | register int to_check, bit, fd; | |
2067 | ||
2068 | if (rfds) | |
2069 | { | |
2070 | for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++) | |
2071 | { | |
2072 | if (orfds & bit) | |
2073 | { | |
2074 | int avail = 0, status = 0; | |
2075 | ||
2076 | if (bit == 1) | |
2077 | avail = detect_input_pending (); /* Special keyboard handler */ | |
2078 | else | |
2079 | { | |
2080 | #ifdef FIONREAD | |
2081 | status = ioctl (fd, FIONREAD, &avail); | |
2082 | #else /* no FIONREAD */ | |
207bdbdb RS |
2083 | #ifdef MSDOS |
2084 | abort (); /* I don't think we need it. */ | |
2085 | #else /* not MSDOS */ | |
86a5659e JB |
2086 | /* Hoping it will return -1 if nothing available |
2087 | or 0 if all 0 chars requested are read. */ | |
2088 | if (proc_buffered_char[fd] >= 0) | |
2089 | avail = 1; | |
2090 | else | |
2091 | { | |
2092 | avail = read (fd, &buf, 1); | |
2093 | if (avail > 0) | |
2094 | proc_buffered_char[fd] = buf; | |
2095 | } | |
207bdbdb | 2096 | #endif /* not MSDOS */ |
86a5659e JB |
2097 | #endif /* no FIONREAD */ |
2098 | } | |
2099 | if (status >= 0 && avail > 0) | |
2100 | { | |
2101 | (*rfds) |= bit; | |
2102 | ravail++; | |
2103 | } | |
2104 | } | |
2105 | } | |
2106 | } | |
2107 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2108 | break; | |
2109 | old_alarm = alarm (0); | |
34567704 | 2110 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2111 | select_alarmed = 0; |
2112 | alarm (SELECT_PAUSE); | |
2113 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2114 | while (select_alarmed == 0 && *local_timeout != 0 | |
2115 | && process_tick == update_tick) | |
2116 | { | |
207bdbdb RS |
2117 | #ifdef MSDOS |
2118 | sleep_or_kbd_hit (SELECT_PAUSE, (orfds & 1) != 0); | |
2119 | select_alarm (); | |
2120 | #else /* not MSDOS */ | |
86a5659e JB |
2121 | /* If we are interested in terminal input, |
2122 | wait by reading the terminal. | |
2123 | That makes instant wakeup for terminal input at least. */ | |
2124 | if (orfds & 1) | |
2125 | { | |
2126 | read_input_waiting (); | |
2127 | if (detect_input_pending ()) | |
2128 | select_alarmed = 1; | |
2129 | } | |
2130 | else | |
2131 | pause (); | |
207bdbdb | 2132 | #endif /* not MSDOS */ |
86a5659e JB |
2133 | } |
2134 | (*local_timeout) -= SELECT_PAUSE; | |
2135 | /* Reset the old alarm if there was one */ | |
2136 | alarm (0); | |
2137 | signal (SIGALRM, old_trap); | |
2138 | if (old_alarm != 0) | |
2139 | { | |
2140 | /* Reset or forge an interrupt for the original handler. */ | |
2141 | old_alarm -= SELECT_PAUSE; | |
2142 | if (old_alarm <= 0) | |
2143 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2144 | else | |
2145 | alarm (old_alarm); | |
2146 | } | |
2147 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2148 | break; | |
2149 | } | |
2150 | return ravail; | |
2151 | } | |
2152 | ||
2153 | /* Read keyboard input into the standard buffer, | |
2154 | waiting for at least one character. */ | |
2155 | ||
2156 | /* Make all keyboard buffers much bigger when using X windows. */ | |
2157 | #ifdef HAVE_X_WINDOWS | |
2158 | #define BUFFER_SIZE_FACTOR 16 | |
2159 | #else | |
2160 | #define BUFFER_SIZE_FACTOR 1 | |
2161 | #endif | |
2162 | ||
2163 | read_input_waiting () | |
2164 | { | |
86a5659e | 2165 | struct input_event e; |
34567704 JB |
2166 | int nread, i; |
2167 | extern int quit_char; | |
86a5659e JB |
2168 | |
2169 | if (read_socket_hook) | |
2170 | { | |
f4a7e5bd RS |
2171 | struct input_event buf[256]; |
2172 | ||
86a5659e JB |
2173 | read_alarm_should_throw = 0; |
2174 | if (! setjmp (read_alarm_throw)) | |
f4a7e5bd | 2175 | nread = (*read_socket_hook) (0, buf, 256, 1, 0); |
86a5659e JB |
2176 | else |
2177 | nread = -1; | |
f4a7e5bd RS |
2178 | |
2179 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2180 | for (i = 0; i < nread; i++) | |
2181 | { | |
2182 | kbd_buffer_store_event (&buf[i]); | |
2183 | /* Don't look at input that follows a C-g too closely. | |
2184 | This reduces lossage due to autorepeat on C-g. */ | |
2185 | if (buf[i].kind == ascii_keystroke | |
2186 | && XINT(buf[i].code) == quit_char) | |
2187 | break; | |
2188 | } | |
86a5659e JB |
2189 | } |
2190 | else | |
86a5659e | 2191 | { |
f4a7e5bd RS |
2192 | char buf[3]; |
2193 | nread = read (fileno (stdin), buf, 1); | |
2194 | ||
2195 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2196 | e.kind = ascii_keystroke; | |
2197 | e.frame_or_window = selected_frame; | |
2198 | e.modifiers = 0; | |
2199 | for (i = 0; i < nread; i++) | |
a00d5589 | 2200 | { |
f4a7e5bd RS |
2201 | /* Convert chars > 0177 to meta events if desired. |
2202 | We do this under the same conditions that read_avail_input does. */ | |
2203 | if (read_socket_hook == 0) | |
2204 | { | |
2205 | /* If the user says she has a meta key, then believe her. */ | |
2206 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2207 | e.modifiers = meta_modifier; | |
2208 | if (meta_key != 2) | |
2209 | buf[i] &= ~0x80; | |
2210 | } | |
b95520f5 | 2211 | |
f4a7e5bd RS |
2212 | XSET (e.code, Lisp_Int, buf[i]); |
2213 | kbd_buffer_store_event (&e); | |
2214 | /* Don't look at input that follows a C-g too closely. | |
2215 | This reduces lossage due to autorepeat on C-g. */ | |
2216 | if (buf[i] == quit_char) | |
2217 | break; | |
2218 | } | |
86a5659e JB |
2219 | } |
2220 | } | |
2221 | ||
2222 | #endif /* not HAVE_SELECT */ | |
2223 | #endif /* not VMS */ | |
2224 | \f | |
2225 | #ifdef BSD4_1 | |
86a5659e JB |
2226 | /* |
2227 | * Partially emulate 4.2 open call. | |
2228 | * open is defined as this in 4.1. | |
2229 | * | |
2230 | * - added by Michael Bloom @ Citicorp/TTI | |
2231 | * | |
2232 | */ | |
2233 | ||
2234 | int | |
2235 | sys_open (path, oflag, mode) | |
2236 | char *path; | |
2237 | int oflag, mode; | |
2238 | { | |
2239 | if (oflag & O_CREAT) | |
2240 | return creat (path, mode); | |
2241 | else | |
2242 | return open (path, oflag); | |
2243 | } | |
2244 | ||
2245 | init_sigio () | |
2246 | { | |
2247 | if (noninteractive) | |
2248 | return; | |
2249 | lmode = LINTRUP | lmode; | |
2250 | ioctl (0, TIOCLSET, &lmode); | |
2251 | } | |
2252 | ||
2253 | reset_sigio () | |
2254 | { | |
2255 | if (noninteractive) | |
2256 | return; | |
2257 | lmode = ~LINTRUP & lmode; | |
2258 | ioctl (0, TIOCLSET, &lmode); | |
2259 | } | |
2260 | ||
2261 | request_sigio () | |
2262 | { | |
2263 | sigrelse (SIGTINT); | |
2264 | ||
2265 | interrupts_deferred = 0; | |
2266 | } | |
2267 | ||
2268 | unrequest_sigio () | |
2269 | { | |
2270 | sighold (SIGTINT); | |
2271 | ||
2272 | interrupts_deferred = 1; | |
2273 | } | |
2274 | ||
2275 | /* still inside #ifdef BSD4_1 */ | |
2276 | #ifdef subprocesses | |
2277 | ||
2278 | int sigheld; /* Mask of held signals */ | |
2279 | ||
2280 | sigholdx (signum) | |
2281 | int signum; | |
2282 | { | |
2283 | sigheld |= sigbit (signum); | |
2284 | sighold (signum); | |
2285 | } | |
2286 | ||
2287 | sigisheld (signum) | |
2288 | int signum; | |
2289 | { | |
2290 | sigheld |= sigbit (signum); | |
2291 | } | |
2292 | ||
2293 | sigunhold (signum) | |
2294 | int signum; | |
2295 | { | |
2296 | sigheld &= ~sigbit (signum); | |
2297 | sigrelse (signum); | |
2298 | } | |
2299 | ||
2300 | sigfree () /* Free all held signals */ | |
2301 | { | |
2302 | int i; | |
2303 | for (i = 0; i < NSIG; i++) | |
2304 | if (sigheld & sigbit (i)) | |
2305 | sigrelse (i); | |
2306 | sigheld = 0; | |
2307 | } | |
2308 | ||
2309 | sigbit (i) | |
2310 | { | |
2311 | return 1 << (i - 1); | |
2312 | } | |
2313 | #endif /* subprocesses */ | |
2314 | #endif /* BSD4_1 */ | |
2315 | \f | |
2316 | /* POSIX signals support - DJB */ | |
2317 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2318 | ||
2319 | #ifdef POSIX_SIGNALS | |
2320 | ||
2321 | sigset_t old_mask, empty_mask, full_mask, temp_mask; | |
2322 | static struct sigaction new_action, old_action; | |
2323 | ||
2324 | init_signals () | |
2325 | { | |
00eaaa32 JB |
2326 | sigemptyset (&empty_mask); |
2327 | sigfillset (&full_mask); | |
86a5659e JB |
2328 | } |
2329 | ||
86a5659e JB |
2330 | signal_handler_t |
2331 | sys_signal (int signal_number, signal_handler_t action) | |
2332 | { | |
2333 | #ifdef DGUX | |
2334 | /* This gets us restartable system calls for efficiency. | |
2335 | The "else" code will works as well. */ | |
2336 | return (berk_signal (signal_number, action)); | |
2337 | #else | |
2338 | sigemptyset (&new_action.sa_mask); | |
2339 | new_action.sa_handler = action; | |
4a785b6e | 2340 | new_action.sa_flags = 0; |
d32b2f3c | 2341 | sigaction (signal_number, &new_action, &old_action); |
86a5659e JB |
2342 | return (old_action.sa_handler); |
2343 | #endif /* DGUX */ | |
2344 | } | |
2345 | ||
e065a56e JB |
2346 | #ifndef __GNUC__ |
2347 | /* If we're compiling with GCC, we don't need this function, since it | |
2348 | can be written as a macro. */ | |
2349 | sigset_t | |
2350 | sys_sigmask (int sig) | |
2351 | { | |
2352 | sigset_t mask; | |
2353 | sigemptyset (&mask); | |
2354 | sigaddset (&mask, sig); | |
2355 | return mask; | |
2356 | } | |
2357 | #endif | |
2358 | ||
86a5659e JB |
2359 | int |
2360 | sys_sigpause (sigset_t new_mask) | |
2361 | { | |
2362 | /* pause emulating berk sigpause... */ | |
2363 | sigsuspend (&new_mask); | |
2364 | return (EINTR); | |
2365 | } | |
2366 | ||
2367 | /* I'd like to have these guys return pointers to the mask storage in here, | |
2368 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2369 | safe and pass the structure. It normally won't be more than 2 bytes | |
2370 | anyhow. - DJB */ | |
2371 | ||
2372 | sigset_t | |
2373 | sys_sigblock (sigset_t new_mask) | |
2374 | { | |
2375 | sigset_t old_mask; | |
2376 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2377 | return (old_mask); | |
2378 | } | |
2379 | ||
2380 | sigset_t | |
2381 | sys_sigunblock (sigset_t new_mask) | |
2382 | { | |
2383 | sigset_t old_mask; | |
2384 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2385 | return (old_mask); | |
2386 | } | |
2387 | ||
2388 | sigset_t | |
2389 | sys_sigsetmask (sigset_t new_mask) | |
2390 | { | |
2391 | sigset_t old_mask; | |
2392 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2393 | return (old_mask); | |
2394 | } | |
2395 | ||
2396 | #endif /* POSIX_SIGNALS */ | |
2397 | \f | |
2398 | #ifndef BSTRING | |
2399 | ||
739f36e2 RS |
2400 | #ifndef bzero |
2401 | ||
86a5659e JB |
2402 | void |
2403 | bzero (b, length) | |
2404 | register char *b; | |
2405 | register int length; | |
2406 | { | |
2407 | #ifdef VMS | |
2408 | short zero = 0; | |
2409 | long max_str = 65535; | |
2410 | ||
2411 | while (length > max_str) { | |
2412 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2413 | length -= max_str; | |
2414 | b += max_str; | |
2415 | } | |
2416 | max_str = length; | |
2417 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2418 | #else | |
2419 | while (length-- > 0) | |
2420 | *b++ = 0; | |
2421 | #endif /* not VMS */ | |
2422 | } | |
2423 | ||
739f36e2 RS |
2424 | #endif /* no bzero */ |
2425 | ||
2426 | #ifndef bcopy | |
86a5659e JB |
2427 | /* Saying `void' requires a declaration, above, where bcopy is used |
2428 | and that declaration causes pain for systems where bcopy is a macro. */ | |
2429 | bcopy (b1, b2, length) | |
2430 | register char *b1; | |
2431 | register char *b2; | |
2432 | register int length; | |
2433 | { | |
2434 | #ifdef VMS | |
2435 | long max_str = 65535; | |
2436 | ||
2437 | while (length > max_str) { | |
2438 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
2439 | length -= max_str; | |
2440 | b1 += max_str; | |
2441 | b2 += max_str; | |
2442 | } | |
2443 | max_str = length; | |
2444 | (void) LIB$MOVC3 (&length, b1, b2); | |
2445 | #else | |
2446 | while (length-- > 0) | |
2447 | *b2++ = *b1++; | |
2448 | #endif /* not VMS */ | |
2449 | } | |
739f36e2 | 2450 | #endif /* no bcopy */ |
86a5659e | 2451 | |
739f36e2 | 2452 | #ifndef bcmp |
86a5659e JB |
2453 | int |
2454 | bcmp (b1, b2, length) /* This could be a macro! */ | |
2455 | register char *b1; | |
2456 | register char *b2; | |
2457 | register int length; | |
2458 | { | |
2459 | #ifdef VMS | |
2460 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
2461 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
2462 | ||
2463 | return STR$COMPARE (&src1, &src2); | |
2464 | #else | |
2465 | while (length-- > 0) | |
2466 | if (*b1++ != *b2++) | |
2467 | return 1; | |
2468 | ||
2469 | return 0; | |
2470 | #endif /* not VMS */ | |
2471 | } | |
739f36e2 RS |
2472 | #endif /* no bcmp */ |
2473 | ||
86a5659e JB |
2474 | #endif /* not BSTRING */ |
2475 | \f | |
9927a7b1 | 2476 | #ifndef HAVE_RANDOM |
86a5659e JB |
2477 | #ifdef USG |
2478 | /* | |
2479 | * The BSD random returns numbers in the range of | |
2480 | * 0 to 2e31 - 1. The USG rand returns numbers in the | |
2481 | * range of 0 to 2e15 - 1. This is probably not significant | |
2482 | * in this usage. | |
2483 | */ | |
2484 | ||
2485 | long | |
2486 | random () | |
2487 | { | |
2488 | /* Arrange to return a range centered on zero. */ | |
2489 | return (rand () << 15) + rand () - (1 << 29); | |
2490 | } | |
2491 | ||
2492 | srandom (arg) | |
2493 | int arg; | |
2494 | { | |
2495 | srand (arg); | |
2496 | } | |
2497 | ||
2498 | #endif /* USG */ | |
2499 | ||
2500 | #ifdef BSD4_1 | |
2501 | long random () | |
2502 | { | |
2503 | /* Arrange to return a range centered on zero. */ | |
2504 | return (rand () << 15) + rand () - (1 << 29); | |
2505 | } | |
2506 | ||
2507 | srandom (arg) | |
2508 | int arg; | |
2509 | { | |
2510 | srand (arg); | |
2511 | } | |
2512 | #endif /* BSD4_1 */ | |
9927a7b1 | 2513 | #endif |
86a5659e JB |
2514 | \f |
2515 | #ifdef WRONG_NAME_INSQUE | |
2516 | ||
2517 | insque (q,p) | |
2518 | caddr_t q,p; | |
2519 | { | |
2520 | _insque (q,p); | |
2521 | } | |
2522 | ||
2523 | #endif | |
2524 | \f | |
2525 | #ifdef VMS | |
2526 | ||
2527 | #ifdef getenv | |
2528 | /* If any place else asks for the TERM variable, | |
2529 | allow it to be overridden with the EMACS_TERM variable | |
2530 | before attempting to translate the logical name TERM. As a last | |
2531 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2532 | #undef getenv | |
2533 | char * | |
2534 | sys_getenv (name) | |
2535 | char *name; | |
2536 | { | |
2537 | register char *val; | |
2538 | static char buf[256]; | |
2539 | static struct dsc$descriptor_s equiv | |
2540 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2541 | static struct dsc$descriptor_s d_name | |
2542 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2543 | short eqlen; | |
2544 | ||
2545 | if (!strcmp (name, "TERM")) | |
2546 | { | |
2547 | val = (char *) getenv ("EMACS_TERM"); | |
2548 | if (val) | |
2549 | return val; | |
2550 | } | |
2551 | ||
2552 | d_name.dsc$w_length = strlen (name); | |
2553 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2554 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2555 | { |
2556 | char *str = (char *) xmalloc (eqlen + 1); | |
2557 | bcopy (buf, str, eqlen); | |
2558 | str[eqlen] = '\0'; | |
2559 | /* This is a storage leak, but a pain to fix. With luck, | |
2560 | no one will ever notice. */ | |
2561 | return str; | |
2562 | } | |
2563 | return (char *) getenv (name); | |
2564 | } | |
2565 | #endif /* getenv */ | |
2566 | ||
2567 | #ifdef abort | |
2568 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2569 | to force a call on the debugger from within the image. */ | |
2570 | #undef abort | |
2571 | sys_abort () | |
2572 | { | |
2573 | reset_sys_modes (); | |
2574 | LIB$SIGNAL (SS$_DEBUG); | |
2575 | } | |
2576 | #endif /* abort */ | |
2577 | #endif /* VMS */ | |
2578 | \f | |
2579 | #ifdef VMS | |
2580 | #ifdef LINK_CRTL_SHARE | |
2581 | #ifdef SHAREABLE_LIB_BUG | |
eb8c3be9 | 2582 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2583 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2584 | version which is uninitialized... If not for this "feature", we | |
2585 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2586 | int sys_nerr = 35; | |
2587 | char *sys_errlist[] = | |
2588 | { | |
2589 | "error 0", | |
2590 | "not owner", | |
2591 | "no such file or directory", | |
2592 | "no such process", | |
2593 | "interrupted system call", | |
2594 | "i/o error", | |
2595 | "no such device or address", | |
2596 | "argument list too long", | |
2597 | "exec format error", | |
2598 | "bad file number", | |
2599 | "no child process", | |
2600 | "no more processes", | |
2601 | "not enough memory", | |
2602 | "permission denied", | |
2603 | "bad address", | |
2604 | "block device required", | |
2605 | "mount devices busy", | |
2606 | "file exists", | |
2607 | "cross-device link", | |
2608 | "no such device", | |
2609 | "not a directory", | |
2610 | "is a directory", | |
2611 | "invalid argument", | |
2612 | "file table overflow", | |
2613 | "too many open files", | |
2614 | "not a typewriter", | |
2615 | "text file busy", | |
2616 | "file too big", | |
2617 | "no space left on device", | |
2618 | "illegal seek", | |
2619 | "read-only file system", | |
2620 | "too many links", | |
2621 | "broken pipe", | |
2622 | "math argument", | |
2623 | "result too large", | |
2624 | "I/O stream empty", | |
2625 | "vax/vms specific error code nontranslatable error" | |
2626 | }; | |
2627 | #endif /* SHAREABLE_LIB_BUG */ | |
2628 | #endif /* LINK_CRTL_SHARE */ | |
2629 | #endif /* VMS */ | |
7088d1ca RM |
2630 | |
2631 | #ifndef HAVE_STRERROR | |
2632 | char * | |
2633 | strerror (errnum) | |
2634 | int errnum; | |
2635 | { | |
2636 | extern char *sys_errlist[]; | |
2637 | extern int sys_nerr; | |
2638 | ||
2639 | if (errnum >= 0 && errnum < sys_nerr) | |
2640 | return sys_errlist[errnum]; | |
2641 | return (char *) "Unknown error"; | |
2642 | } | |
2643 | ||
2644 | #endif /* ! HAVE_STRERROR */ | |
86a5659e JB |
2645 | \f |
2646 | #ifdef INTERRUPTIBLE_OPEN | |
2647 | ||
2648 | int | |
2649 | /* VARARGS 2 */ | |
2650 | sys_open (path, oflag, mode) | |
2651 | char *path; | |
2652 | int oflag, mode; | |
2653 | { | |
2654 | register int rtnval; | |
2655 | ||
2656 | while ((rtnval = open (path, oflag, mode)) == -1 | |
2657 | && (errno == EINTR)); | |
2658 | return (rtnval); | |
2659 | } | |
2660 | ||
2661 | #endif /* INTERRUPTIBLE_OPEN */ | |
2662 | ||
2663 | #ifdef INTERRUPTIBLE_CLOSE | |
2664 | ||
2665 | sys_close (fd) | |
2666 | int fd; | |
2667 | { | |
2668 | register int rtnval; | |
2669 | ||
2670 | while ((rtnval = close (fd)) == -1 | |
2671 | && (errno == EINTR)); | |
2672 | return rtnval; | |
2673 | } | |
2674 | ||
2675 | #endif /* INTERRUPTIBLE_CLOSE */ | |
2676 | ||
2677 | #ifdef INTERRUPTIBLE_IO | |
2678 | ||
2679 | int | |
2680 | sys_read (fildes, buf, nbyte) | |
2681 | int fildes; | |
2682 | char *buf; | |
2683 | unsigned int nbyte; | |
2684 | { | |
2685 | register int rtnval; | |
2686 | ||
2687 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
2688 | && (errno == EINTR)); | |
2689 | return (rtnval); | |
2690 | } | |
2691 | ||
2692 | int | |
2693 | sys_write (fildes, buf, nbyte) | |
2694 | int fildes; | |
2695 | char *buf; | |
2696 | unsigned int nbyte; | |
2697 | { | |
b95520f5 | 2698 | register int rtnval, bytes_written; |
86a5659e | 2699 | |
b95520f5 BF |
2700 | bytes_written = 0; |
2701 | ||
2702 | while (nbyte > 0) | |
2703 | { | |
2704 | rtnval = write (fildes, buf, nbyte); | |
2705 | ||
2706 | if (rtnval == -1) | |
2707 | { | |
2708 | if (errno == EINTR) | |
2709 | continue; | |
2710 | else | |
2711 | return (-1); | |
2712 | } | |
2713 | ||
2714 | buf += rtnval; | |
2715 | nbyte -= rtnval; | |
2716 | bytes_written += rtnval; | |
2717 | } | |
2718 | return (bytes_written); | |
86a5659e JB |
2719 | } |
2720 | ||
2721 | #endif /* INTERRUPTIBLE_IO */ | |
2722 | \f | |
0e18d8ef RS |
2723 | #ifndef HAVE_VFORK |
2724 | ||
2725 | /* | |
2726 | * Substitute fork for vfork on USG flavors. | |
2727 | */ | |
2728 | ||
2729 | vfork () | |
2730 | { | |
2731 | return (fork ()); | |
2732 | } | |
2733 | ||
2734 | #endif /* not HAVE_VFORK */ | |
2735 | \f | |
86a5659e JB |
2736 | #ifdef USG |
2737 | /* | |
2738 | * All of the following are for USG. | |
2739 | * | |
2740 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2741 | * that the user program has elected to catch. Thus the system call | |
2742 | * must be retried in these cases. To handle this without massive | |
2743 | * changes in the source code, we remap the standard system call names | |
2744 | * to names for our own functions in sysdep.c that do the system call | |
2745 | * with retries. Actually, for portability reasons, it is good | |
2746 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2747 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2748 | * adds an extra level of function call overhead but it is almost |
2749 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2750 | */ | |
2751 | ||
00eaaa32 | 2752 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
2753 | char *sys_siglist[NSIG + 1] = |
2754 | { | |
2755 | #ifdef AIX | |
2756 | /* AIX has changed the signals a bit */ | |
2757 | "bogus signal", /* 0 */ | |
2758 | "hangup", /* 1 SIGHUP */ | |
2759 | "interrupt", /* 2 SIGINT */ | |
2760 | "quit", /* 3 SIGQUIT */ | |
2761 | "illegal instruction", /* 4 SIGILL */ | |
2762 | "trace trap", /* 5 SIGTRAP */ | |
2763 | "IOT instruction", /* 6 SIGIOT */ | |
2764 | "crash likely", /* 7 SIGDANGER */ | |
2765 | "floating point exception", /* 8 SIGFPE */ | |
2766 | "kill", /* 9 SIGKILL */ | |
2767 | "bus error", /* 10 SIGBUS */ | |
2768 | "segmentation violation", /* 11 SIGSEGV */ | |
2769 | "bad argument to system call", /* 12 SIGSYS */ | |
2770 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2771 | "alarm clock", /* 14 SIGALRM */ | |
2772 | "software termination signum", /* 15 SIGTERM */ | |
2773 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2774 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2775 | "death of a child", /* 18 SIGCLD */ | |
2776 | "power-fail restart", /* 19 SIGPWR */ | |
2777 | "bogus signal", /* 20 */ | |
2778 | "bogus signal", /* 21 */ | |
2779 | "bogus signal", /* 22 */ | |
2780 | "bogus signal", /* 23 */ | |
2781 | "bogus signal", /* 24 */ | |
2782 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
2783 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
2784 | "I/O intervention required", /* 27 SIGIOINT */ | |
2785 | "HFT grant", /* 28 SIGGRANT */ | |
2786 | "HFT retract", /* 29 SIGRETRACT */ | |
2787 | "HFT sound done", /* 30 SIGSOUND */ | |
2788 | "HFT input ready", /* 31 SIGMSG */ | |
2789 | #else /* not AIX */ | |
2790 | "bogus signal", /* 0 */ | |
2791 | "hangup", /* 1 SIGHUP */ | |
2792 | "interrupt", /* 2 SIGINT */ | |
2793 | "quit", /* 3 SIGQUIT */ | |
2794 | "illegal instruction", /* 4 SIGILL */ | |
2795 | "trace trap", /* 5 SIGTRAP */ | |
2796 | "IOT instruction", /* 6 SIGIOT */ | |
2797 | "EMT instruction", /* 7 SIGEMT */ | |
2798 | "floating point exception", /* 8 SIGFPE */ | |
2799 | "kill", /* 9 SIGKILL */ | |
2800 | "bus error", /* 10 SIGBUS */ | |
2801 | "segmentation violation", /* 11 SIGSEGV */ | |
2802 | "bad argument to system call", /* 12 SIGSYS */ | |
2803 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2804 | "alarm clock", /* 14 SIGALRM */ | |
2805 | "software termination signum", /* 15 SIGTERM */ | |
2806 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2807 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2808 | "death of a child", /* 18 SIGCLD */ | |
2809 | "power-fail restart", /* 19 SIGPWR */ | |
2810 | #endif /* not AIX */ | |
2811 | 0 | |
2812 | }; | |
70080de1 | 2813 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
2814 | |
2815 | /* | |
2816 | * Warning, this function may not duplicate 4.2 action properly | |
2817 | * under error conditions. | |
2818 | */ | |
2819 | ||
2820 | #ifndef MAXPATHLEN | |
2821 | /* In 4.1, param.h fails to define this. */ | |
2822 | #define MAXPATHLEN 1024 | |
2823 | #endif | |
2824 | ||
2825 | #ifndef HAVE_GETWD | |
2826 | ||
2827 | char * | |
2828 | getwd (pathname) | |
2829 | char *pathname; | |
2830 | { | |
2831 | char *npath, *spath; | |
2832 | extern char *getcwd (); | |
2833 | ||
9ac0d9e0 | 2834 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 2835 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
2836 | if (spath == 0) |
2837 | return spath; | |
86a5659e JB |
2838 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
2839 | up to first slash. Should be harmless on other systems. */ | |
2840 | while (*npath && *npath != '/') | |
2841 | npath++; | |
2842 | strcpy (pathname, npath); | |
2843 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2844 | UNBLOCK_INPUT; |
86a5659e JB |
2845 | return pathname; |
2846 | } | |
2847 | ||
2848 | #endif /* HAVE_GETWD */ | |
2849 | ||
2850 | /* | |
2851 | * Emulate rename using unlink/link. Note that this is | |
2852 | * only partially correct. Also, doesn't enforce restriction | |
2853 | * that files be of same type (regular->regular, dir->dir, etc). | |
2854 | */ | |
2855 | ||
4746118a JB |
2856 | #ifndef HAVE_RENAME |
2857 | ||
86a5659e | 2858 | rename (from, to) |
19c7afdf JB |
2859 | const char *from; |
2860 | const char *to; | |
86a5659e JB |
2861 | { |
2862 | if (access (from, 0) == 0) | |
2863 | { | |
2864 | unlink (to); | |
2865 | if (link (from, to) == 0) | |
2866 | if (unlink (from) == 0) | |
2867 | return (0); | |
2868 | } | |
2869 | return (-1); | |
2870 | } | |
2871 | ||
4746118a JB |
2872 | #endif |
2873 | ||
86a5659e JB |
2874 | #ifdef MISSING_UTIMES |
2875 | ||
2876 | /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */ | |
2877 | ||
2878 | utimes () | |
2879 | { | |
2880 | } | |
2881 | #endif | |
2882 | ||
2883 | #ifdef IRIS_UTIME | |
2884 | ||
2885 | /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the | |
2886 | utimbuf structure defined anywhere but in the man page. */ | |
2887 | ||
2888 | struct utimbuf | |
2889 | { | |
2890 | long actime; | |
2891 | long modtime; | |
2892 | }; | |
2893 | ||
2894 | utimes (name, tvp) | |
2895 | char *name; | |
2896 | struct timeval tvp[]; | |
2897 | { | |
2898 | struct utimbuf utb; | |
2899 | utb.actime = tvp[0].tv_sec; | |
2900 | utb.modtime = tvp[1].tv_sec; | |
2901 | utime (name, &utb); | |
2902 | } | |
2903 | #endif /* IRIS_UTIME */ | |
2904 | ||
2905 | ||
2906 | #ifdef HPUX | |
2907 | #ifndef HAVE_PERROR | |
2908 | ||
2909 | /* HPUX curses library references perror, but as far as we know | |
2910 | it won't be called. Anyway this definition will do for now. */ | |
2911 | ||
2912 | perror () | |
2913 | { | |
2914 | } | |
2915 | ||
2916 | #endif /* not HAVE_PERROR */ | |
2917 | #endif /* HPUX */ | |
2918 | ||
2919 | #ifndef HAVE_DUP2 | |
2920 | ||
2921 | /* | |
2922 | * Emulate BSD dup2. First close newd if it already exists. | |
2923 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
2924 | * until we are, then close the unsuccessful ones. | |
2925 | */ | |
2926 | ||
2927 | dup2 (oldd, newd) | |
2928 | int oldd; | |
2929 | int newd; | |
2930 | { | |
2931 | register int fd, ret; | |
2932 | ||
2933 | sys_close (newd); | |
2934 | ||
2935 | #ifdef F_DUPFD | |
2936 | fd = fcntl (oldd, F_DUPFD, newd); | |
2937 | if (fd != newd) | |
7088d1ca | 2938 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
86a5659e JB |
2939 | #else |
2940 | fd = dup (old); | |
2941 | if (fd == -1) | |
2942 | return -1; | |
2943 | if (fd == new) | |
2944 | return new; | |
2945 | ret = dup2 (old,new); | |
2946 | sys_close (fd); | |
2947 | return ret; | |
2948 | #endif | |
2949 | } | |
2950 | ||
2951 | #endif /* not HAVE_DUP2 */ | |
2952 | ||
2953 | /* | |
2954 | * Gettimeofday. Simulate as much as possible. Only accurate | |
2955 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
2956 | * Only needed when subprocesses are defined. | |
2957 | */ | |
2958 | ||
2959 | #ifdef subprocesses | |
2960 | #ifndef VMS | |
2961 | #ifndef HAVE_GETTIMEOFDAY | |
2962 | #ifdef HAVE_TIMEVAL | |
2963 | ||
2964 | /* ARGSUSED */ | |
2965 | gettimeofday (tp, tzp) | |
2966 | struct timeval *tp; | |
2967 | struct timezone *tzp; | |
2968 | { | |
2969 | extern long time (); | |
2970 | ||
2971 | tp->tv_sec = time ((long *)0); | |
2972 | tp->tv_usec = 0; | |
4ca7594f RS |
2973 | if (tzp != 0) |
2974 | tzp->tz_minuteswest = -1; | |
86a5659e JB |
2975 | } |
2976 | ||
2977 | #endif | |
2978 | #endif | |
2979 | #endif | |
2980 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
2981 | ||
2982 | /* | |
2983 | * This function will go away as soon as all the stubs fixed. (fnf) | |
2984 | */ | |
2985 | ||
2986 | croak (badfunc) | |
2987 | char *badfunc; | |
2988 | { | |
2989 | printf ("%s not yet implemented\r\n", badfunc); | |
2990 | reset_sys_modes (); | |
2991 | exit (1); | |
2992 | } | |
2993 | ||
2994 | #endif /* USG */ | |
2995 | \f | |
2996 | #ifdef DGUX | |
2997 | ||
2998 | char *sys_siglist[NSIG + 1] = | |
2999 | { | |
3000 | "null signal", /* 0 SIGNULL */ | |
3001 | "hangup", /* 1 SIGHUP */ | |
3002 | "interrupt", /* 2 SIGINT */ | |
3003 | "quit", /* 3 SIGQUIT */ | |
3004 | "illegal instruction", /* 4 SIGILL */ | |
3005 | "trace trap", /* 5 SIGTRAP */ | |
3006 | "abort termination", /* 6 SIGABRT */ | |
3007 | "SIGEMT", /* 7 SIGEMT */ | |
3008 | "floating point exception", /* 8 SIGFPE */ | |
3009 | "kill", /* 9 SIGKILL */ | |
3010 | "bus error", /* 10 SIGBUS */ | |
3011 | "segmentation violation", /* 11 SIGSEGV */ | |
3012 | "bad argument to system call", /* 12 SIGSYS */ | |
3013 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
3014 | "alarm clock", /* 14 SIGALRM */ | |
3015 | "software termination signal", /* 15 SIGTERM */ | |
3016 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3017 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3018 | "child stopped or terminated", /* 18 SIGCLD */ | |
3019 | "power-fail restart", /* 19 SIGPWR */ | |
3020 | "window size changed", /* 20 SIGWINCH */ | |
3021 | "undefined", /* 21 */ | |
eb8c3be9 | 3022 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
3023 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
3024 | "stop signal from tty", /* 24 SIGSTP */ | |
3025 | "continue a stopped process", /* 25 SIGCONT */ | |
3026 | "attempted background tty read", /* 26 SIGTTIN */ | |
3027 | "attempted background tty write", /* 27 SIGTTOU */ | |
3028 | "undefined", /* 28 */ | |
3029 | "undefined", /* 29 */ | |
3030 | "undefined", /* 30 */ | |
3031 | "undefined", /* 31 */ | |
3032 | "undefined", /* 32 */ | |
3033 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
3034 | "I/O is possible", /* 34 SIGIO */ | |
3035 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
3036 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
3037 | "virtual time alarm", /* 37 SIGVTALRM */ | |
3038 | "profiling time alarm", /* 38 SIGPROF */ | |
3039 | "undefined", /* 39 */ | |
3040 | "file record locks revoked", /* 40 SIGLOST */ | |
3041 | "undefined", /* 41 */ | |
3042 | "undefined", /* 42 */ | |
3043 | "undefined", /* 43 */ | |
3044 | "undefined", /* 44 */ | |
3045 | "undefined", /* 45 */ | |
3046 | "undefined", /* 46 */ | |
3047 | "undefined", /* 47 */ | |
3048 | "undefined", /* 48 */ | |
3049 | "undefined", /* 49 */ | |
3050 | "undefined", /* 50 */ | |
3051 | "undefined", /* 51 */ | |
3052 | "undefined", /* 52 */ | |
3053 | "undefined", /* 53 */ | |
3054 | "undefined", /* 54 */ | |
3055 | "undefined", /* 55 */ | |
3056 | "undefined", /* 56 */ | |
3057 | "undefined", /* 57 */ | |
3058 | "undefined", /* 58 */ | |
3059 | "undefined", /* 59 */ | |
3060 | "undefined", /* 60 */ | |
3061 | "undefined", /* 61 */ | |
3062 | "undefined", /* 62 */ | |
3063 | "undefined", /* 63 */ | |
3064 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
3065 | 0 | |
3066 | }; | |
3067 | ||
3068 | #endif /* DGUX */ | |
3069 | \f | |
3070 | /* Directory routines for systems that don't have them. */ | |
3071 | ||
3072 | #ifdef SYSV_SYSTEM_DIR | |
3073 | ||
3074 | #include <dirent.h> | |
3075 | ||
1db6401c | 3076 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
cfdc57af | 3077 | |
86a5659e JB |
3078 | int |
3079 | closedir (dirp) | |
3080 | register DIR *dirp; /* stream from opendir */ | |
3081 | { | |
cfdc57af RS |
3082 | int rtnval; |
3083 | ||
3084 | rtnval = sys_close (dirp->dd_fd); | |
1b929d25 | 3085 | |
65aa44ac JB |
3086 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3087 | in one block. Why in the world are we freeing this ourselves | |
3088 | anyway? */ | |
3089 | #if ! (defined (sun) && defined (USG5_4)) | |
3090 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3091 | #endif | |
9ac0d9e0 | 3092 | xfree ((char *) dirp); |
cfdc57af RS |
3093 | |
3094 | return rtnval; | |
86a5659e | 3095 | } |
1db6401c | 3096 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3097 | #endif /* SYSV_SYSTEM_DIR */ |
3098 | ||
3099 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3100 | ||
3101 | DIR * | |
3102 | opendir (filename) | |
3103 | char *filename; /* name of directory */ | |
3104 | { | |
3105 | register DIR *dirp; /* -> malloc'ed storage */ | |
3106 | register int fd; /* file descriptor for read */ | |
3107 | struct stat sbuf; /* result of fstat */ | |
3108 | ||
3109 | fd = sys_open (filename, 0); | |
3110 | if (fd < 0) | |
3111 | return 0; | |
3112 | ||
9ac0d9e0 | 3113 | BLOCK_INPUT; |
86a5659e JB |
3114 | if (fstat (fd, &sbuf) < 0 |
3115 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3116 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3117 | { | |
3118 | sys_close (fd); | |
9ac0d9e0 | 3119 | UNBLOCK_INPUT; |
86a5659e JB |
3120 | return 0; /* bad luck today */ |
3121 | } | |
9ac0d9e0 | 3122 | UNBLOCK_INPUT; |
86a5659e JB |
3123 | |
3124 | dirp->dd_fd = fd; | |
3125 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3126 | ||
3127 | return dirp; | |
3128 | } | |
3129 | ||
3130 | void | |
3131 | closedir (dirp) | |
3132 | register DIR *dirp; /* stream from opendir */ | |
3133 | { | |
3134 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 3135 | xfree ((char *) dirp); |
86a5659e JB |
3136 | } |
3137 | ||
3138 | ||
3139 | #ifndef VMS | |
3140 | #define DIRSIZ 14 | |
3141 | struct olddir | |
3142 | { | |
3143 | ino_t od_ino; /* inode */ | |
3144 | char od_name[DIRSIZ]; /* filename */ | |
3145 | }; | |
3146 | #endif /* not VMS */ | |
3147 | ||
3148 | struct direct dir_static; /* simulated directory contents */ | |
3149 | ||
3150 | /* ARGUSED */ | |
3151 | struct direct * | |
3152 | readdir (dirp) | |
3153 | register DIR *dirp; /* stream from opendir */ | |
3154 | { | |
3155 | #ifndef VMS | |
3156 | register struct olddir *dp; /* -> directory data */ | |
3157 | #else /* VMS */ | |
3158 | register struct dir$_name *dp; /* -> directory data */ | |
3159 | register struct dir$_version *dv; /* -> version data */ | |
3160 | #endif /* VMS */ | |
3161 | ||
3162 | for (; ;) | |
3163 | { | |
3164 | if (dirp->dd_loc >= dirp->dd_size) | |
3165 | dirp->dd_loc = dirp->dd_size = 0; | |
3166 | ||
3167 | if (dirp->dd_size == 0 /* refill buffer */ | |
3168 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3169 | return 0; | |
3170 | ||
3171 | #ifndef VMS | |
3172 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3173 | dirp->dd_loc += sizeof (struct olddir); | |
3174 | ||
3175 | if (dp->od_ino != 0) /* not deleted entry */ | |
3176 | { | |
3177 | dir_static.d_ino = dp->od_ino; | |
3178 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3179 | dir_static.d_name[DIRSIZ] = '\0'; | |
3180 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3181 | dir_static.d_reclen = sizeof (struct direct) | |
3182 | - MAXNAMLEN + 3 | |
3183 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3184 | return &dir_static; /* -> simulated structure */ | |
3185 | } | |
3186 | #else /* VMS */ | |
3187 | dp = (struct dir$_name *) dirp->dd_buf; | |
3188 | if (dirp->dd_loc == 0) | |
3189 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3190 | : dp->dir$b_namecount; | |
3191 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3192 | dir_static.d_ino = dv->dir$w_fid_num; | |
3193 | dir_static.d_namlen = dp->dir$b_namecount; | |
3194 | dir_static.d_reclen = sizeof (struct direct) | |
3195 | - MAXNAMLEN + 3 | |
3196 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3197 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3198 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3199 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3200 | return &dir_static; | |
3201 | #endif /* VMS */ | |
3202 | } | |
3203 | } | |
3204 | ||
3205 | #ifdef VMS | |
3206 | /* readdirver is just like readdir except it returns all versions of a file | |
3207 | as separate entries. */ | |
3208 | ||
3209 | /* ARGUSED */ | |
3210 | struct direct * | |
3211 | readdirver (dirp) | |
3212 | register DIR *dirp; /* stream from opendir */ | |
3213 | { | |
3214 | register struct dir$_name *dp; /* -> directory data */ | |
3215 | register struct dir$_version *dv; /* -> version data */ | |
3216 | ||
3217 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3218 | dirp->dd_loc = dirp->dd_size = 0; | |
3219 | ||
3220 | if (dirp->dd_size == 0 /* refill buffer */ | |
3221 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3222 | return 0; | |
3223 | ||
3224 | dp = (struct dir$_name *) dirp->dd_buf; | |
3225 | if (dirp->dd_loc == 0) | |
3226 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3227 | : dp->dir$b_namecount; | |
3228 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3229 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3230 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3231 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3232 | dir_static.d_ino = dv->dir$w_fid_num; | |
3233 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3234 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3235 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3236 | return &dir_static; | |
3237 | } | |
3238 | ||
3239 | #endif /* VMS */ | |
3240 | ||
3241 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3242 | |
3243 | \f | |
3244 | /* mkdir and rmdir functions, for systems which don't have them. */ | |
3245 | ||
3246 | #ifndef HAVE_MKDIR | |
3247 | /* | |
3248 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3249 | * | |
3250 | * If you want it, it's yours. All I ask in return is that if you | |
3251 | * figure out how to do this in a Bourne Shell script you send me | |
3252 | * a copy. | |
3253 | * sdcsvax!rmr or rmr@uscd | |
3254 | * | |
3255 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3256 | * subroutine. 11Mar86; hoptoad!gnu | |
3257 | * | |
3258 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3259 | * subroutine didn't return EEXIST. It does now. | |
3260 | */ | |
3261 | ||
3262 | /* | |
3263 | * Make a directory. | |
3264 | */ | |
3265 | int | |
3266 | mkdir (dpath, dmode) | |
3267 | char *dpath; | |
3268 | int dmode; | |
3269 | { | |
039f26a4 | 3270 | int cpid, status, fd; |
23524fb9 JB |
3271 | struct stat statbuf; |
3272 | ||
3273 | if (stat (dpath, &statbuf) == 0) | |
3274 | { | |
3275 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3276 | return -1; | |
3277 | } | |
3278 | ||
3279 | /* If stat fails for a reason other than non-existence, return error */ | |
3280 | if (errno != ENOENT) | |
3281 | return -1; | |
3282 | ||
039f26a4 | 3283 | synch_process_alive = 1; |
23524fb9 JB |
3284 | switch (cpid = fork ()) |
3285 | { | |
3286 | ||
039f26a4 | 3287 | case -1: /* Error in fork */ |
23524fb9 JB |
3288 | return (-1); /* Errno is set already */ |
3289 | ||
3290 | case 0: /* Child process */ | |
3291 | /* | |
3292 | * Cheap hack to set mode of new directory. Since this | |
3293 | * child process is going away anyway, we zap its umask. | |
3294 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3295 | * directory. Does anybody care? | |
3296 | */ | |
3297 | status = umask (0); /* Get current umask */ | |
3298 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3299 | fd = sys_open("/dev/null", 2); |
3300 | if (fd >= 0) | |
3301 | { | |
3302 | dup2 (fd, 0); | |
3303 | dup2 (fd, 1); | |
3304 | dup2 (fd, 2); | |
3305 | } | |
23524fb9 JB |
3306 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3307 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3308 | ||
3309 | default: /* Parent process */ | |
039f26a4 | 3310 | wait_for_termination (cpid); |
23524fb9 JB |
3311 | } |
3312 | ||
039f26a4 | 3313 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3314 | { |
3315 | errno = EIO; /* We don't know why, but */ | |
3316 | return -1; /* /bin/mkdir failed */ | |
3317 | } | |
3318 | ||
3319 | return 0; | |
3320 | } | |
3321 | #endif /* not HAVE_MKDIR */ | |
3322 | ||
3323 | #ifndef HAVE_RMDIR | |
3324 | int | |
3325 | rmdir (dpath) | |
3326 | char *dpath; | |
3327 | { | |
039f26a4 | 3328 | int cpid, status, fd; |
23524fb9 JB |
3329 | struct stat statbuf; |
3330 | ||
3331 | if (stat (dpath, &statbuf) != 0) | |
3332 | { | |
3333 | /* Stat just set errno. We don't have to */ | |
3334 | return -1; | |
3335 | } | |
3336 | ||
039f26a4 | 3337 | synch_process_alive = 1; |
23524fb9 JB |
3338 | switch (cpid = fork ()) |
3339 | { | |
3340 | ||
039f26a4 | 3341 | case -1: /* Error in fork */ |
23524fb9 JB |
3342 | return (-1); /* Errno is set already */ |
3343 | ||
3344 | case 0: /* Child process */ | |
039f26a4 RS |
3345 | fd = sys_open("/dev/null", 2); |
3346 | if (fd >= 0) | |
3347 | { | |
3348 | dup2 (fd, 0); | |
3349 | dup2 (fd, 1); | |
3350 | dup2 (fd, 2); | |
3351 | } | |
039f26a4 | 3352 | wait_for_termination (cpid); |
207bdbdb RS |
3353 | if (synch_process_death != 0 || synch_process_retcode != 0) |
3354 | return -1; /* /bin/rmdir failed */ | |
3355 | default: /* Parent process */ | |
3356 | while (cpid != wait (&status)); /* Wait for kid to finish */ | |
23524fb9 JB |
3357 | } |
3358 | ||
207bdbdb | 3359 | if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0) |
23524fb9 JB |
3360 | { |
3361 | errno = EIO; /* We don't know why, but */ | |
207bdbdb | 3362 | return -1; /* /bin/mkdir failed */ |
23524fb9 JB |
3363 | } |
3364 | ||
3365 | return 0; | |
3366 | } | |
3367 | #endif /* !HAVE_RMDIR */ | |
3368 | ||
3369 | ||
86a5659e JB |
3370 | \f |
3371 | /* Functions for VMS */ | |
3372 | #ifdef VMS | |
91bac16a | 3373 | #include "vms-pwd.h" |
86a5659e JB |
3374 | #include <acldef.h> |
3375 | #include <chpdef.h> | |
3376 | #include <jpidef.h> | |
3377 | ||
3378 | /* Return as a string the VMS error string pertaining to STATUS. | |
3379 | Reuses the same static buffer each time it is called. */ | |
3380 | ||
3381 | char * | |
3382 | vmserrstr (status) | |
3383 | int status; /* VMS status code */ | |
3384 | { | |
3385 | int bufadr[2]; | |
3386 | short len; | |
3387 | static char buf[257]; | |
3388 | ||
3389 | bufadr[0] = sizeof buf - 1; | |
3390 | bufadr[1] = (int) buf; | |
3391 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3392 | return "untranslatable VMS error status"; | |
3393 | buf[len] = '\0'; | |
3394 | return buf; | |
3395 | } | |
3396 | ||
3397 | #ifdef access | |
3398 | #undef access | |
3399 | ||
3400 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3401 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3402 | */ | |
3403 | ||
3404 | #ifdef VMS4_4 | |
3405 | ||
3406 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3407 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3408 | ||
3409 | typedef union { | |
3410 | struct { | |
3411 | unsigned short s_buflen; | |
3412 | unsigned short s_code; | |
3413 | char *s_bufadr; | |
3414 | unsigned short *s_retlenadr; | |
3415 | } s; | |
3416 | int end; | |
3417 | } item; | |
3418 | #define buflen s.s_buflen | |
3419 | #define code s.s_code | |
3420 | #define bufadr s.s_bufadr | |
3421 | #define retlenadr s.s_retlenadr | |
3422 | ||
3423 | #define R_OK 4 /* test for read permission */ | |
3424 | #define W_OK 2 /* test for write permission */ | |
3425 | #define X_OK 1 /* test for execute (search) permission */ | |
3426 | #define F_OK 0 /* test for presence of file */ | |
3427 | ||
3428 | int | |
3429 | sys_access (path, mode) | |
3430 | char *path; | |
3431 | int mode; | |
3432 | { | |
3433 | static char *user = NULL; | |
3434 | char dir_fn[512]; | |
3435 | ||
3436 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3437 | * access can treat the directory like a file. */ | |
3438 | if (directory_file_name (path, dir_fn)) | |
3439 | path = dir_fn; | |
3440 | ||
3441 | if (mode == F_OK) | |
3442 | return access (path, mode); | |
3443 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3444 | return -1; | |
3445 | { | |
3446 | int stat; | |
3447 | int flags; | |
3448 | int acces; | |
3449 | unsigned short int dummy; | |
3450 | item itemlst[3]; | |
3451 | static int constant = ACL$C_FILE; | |
3452 | DESCRIPTOR (path_desc, path); | |
3453 | DESCRIPTOR (user_desc, user); | |
3454 | ||
3455 | flags = 0; | |
3456 | acces = 0; | |
3457 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3458 | return stat; | |
3459 | if (mode & R_OK) | |
3460 | acces |= CHP$M_READ; | |
3461 | if (mode & W_OK) | |
3462 | acces |= CHP$M_WRITE; | |
3463 | itemlst[0].buflen = sizeof (int); | |
3464 | itemlst[0].code = CHP$_FLAGS; | |
3465 | itemlst[0].bufadr = (char *) &flags; | |
3466 | itemlst[0].retlenadr = &dummy; | |
3467 | itemlst[1].buflen = sizeof (int); | |
3468 | itemlst[1].code = CHP$_ACCESS; | |
3469 | itemlst[1].bufadr = (char *) &acces; | |
3470 | itemlst[1].retlenadr = &dummy; | |
3471 | itemlst[2].end = CHP$_END; | |
3472 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3473 | return stat == SS$_NORMAL ? 0 : -1; | |
3474 | } | |
3475 | } | |
3476 | ||
3477 | #else /* not VMS4_4 */ | |
3478 | ||
3479 | #include <prvdef.h> | |
3480 | #define ACE$M_WRITE 2 | |
3481 | #define ACE$C_KEYID 1 | |
3482 | ||
3483 | static unsigned short memid, grpid; | |
3484 | static unsigned int uic; | |
3485 | ||
3486 | /* Called from init_sys_modes, so it happens not very often | |
3487 | but at least each time Emacs is loaded. */ | |
3488 | sys_access_reinit () | |
3489 | { | |
3490 | uic = 0; | |
3491 | } | |
3492 | ||
3493 | int | |
3494 | sys_access (filename, type) | |
3495 | char * filename; | |
3496 | int type; | |
3497 | { | |
3498 | struct FAB fab; | |
3499 | struct XABPRO xab; | |
3500 | int status, size, i, typecode, acl_controlled; | |
3501 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3502 | union prvdef prvmask; | |
3503 | ||
3504 | /* Get UIC and GRP values for protection checking. */ | |
3505 | if (uic == 0) | |
3506 | { | |
3507 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3508 | if (! (status & 1)) | |
3509 | return -1; | |
3510 | memid = uic & 0xFFFF; | |
3511 | grpid = uic >> 16; | |
3512 | } | |
3513 | ||
3514 | if (type != 2) /* not checking write access */ | |
3515 | return access (filename, type); | |
3516 | ||
3517 | /* Check write protection. */ | |
3518 | ||
3519 | #define CHECKPRIV(bit) (prvmask.bit) | |
3520 | #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) | |
3521 | ||
3522 | /* Find privilege bits */ | |
986ffb24 | 3523 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3524 | if (! (status & 1)) |
3525 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3526 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3527 | return 0; /* BYPASS enabled */ | |
3528 | fab = cc$rms_fab; | |
3529 | fab.fab$b_fac = FAB$M_GET; | |
3530 | fab.fab$l_fna = filename; | |
3531 | fab.fab$b_fns = strlen (filename); | |
3532 | fab.fab$l_xab = &xab; | |
3533 | xab = cc$rms_xabpro; | |
3534 | xab.xab$l_aclbuf = aclbuf; | |
3535 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3536 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3537 | if (! (status & 1)) |
3538 | return -1; | |
986ffb24 | 3539 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3540 | /* Check system access */ |
3541 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS)) | |
3542 | return 0; | |
3543 | /* Check ACL entries, if any */ | |
3544 | acl_controlled = 0; | |
3545 | if (xab.xab$w_acllen > 0) | |
3546 | { | |
3547 | aclptr = aclbuf; | |
3548 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3549 | while (*aclptr && aclptr < aclend) | |
3550 | { | |
3551 | size = (*aclptr & 0xff) / 4; | |
3552 | typecode = (*aclptr >> 8) & 0xff; | |
3553 | if (typecode == ACE$C_KEYID) | |
3554 | for (i = size - 1; i > 1; i--) | |
3555 | if (aclptr[i] == uic) | |
3556 | { | |
3557 | acl_controlled = 1; | |
3558 | if (aclptr[1] & ACE$M_WRITE) | |
3559 | return 0; /* Write access through ACL */ | |
3560 | } | |
3561 | aclptr = &aclptr[size]; | |
3562 | } | |
3563 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3564 | return -1; | |
3565 | } | |
3566 | /* No ACL entries specified, check normal protection */ | |
3567 | if (WRITEABLE (XAB$V_WLD)) /* World writeable */ | |
3568 | return 0; | |
3569 | if (WRITEABLE (XAB$V_GRP) && | |
3570 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) | |
3571 | return 0; /* Group writeable */ | |
3572 | if (WRITEABLE (XAB$V_OWN) && | |
3573 | (xab.xab$l_uic & 0xFFFF) == memid) | |
3574 | return 0; /* Owner writeable */ | |
3575 | ||
3576 | return -1; /* Not writeable */ | |
3577 | } | |
3578 | #endif /* not VMS4_4 */ | |
3579 | #endif /* access */ | |
3580 | ||
3581 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3582 | ||
3583 | /* translate a vms file spec to a unix path */ | |
3584 | char * | |
3585 | sys_translate_vms (vfile) | |
3586 | char * vfile; | |
3587 | { | |
3588 | char * p; | |
3589 | char * targ; | |
3590 | ||
3591 | if (!vfile) | |
3592 | return 0; | |
3593 | ||
3594 | targ = vtbuf; | |
3595 | ||
3596 | /* leading device or logical name is a root directory */ | |
3597 | if (p = strchr (vfile, ':')) | |
3598 | { | |
3599 | *targ++ = '/'; | |
3600 | while (vfile < p) | |
3601 | *targ++ = *vfile++; | |
3602 | vfile++; | |
3603 | *targ++ = '/'; | |
3604 | } | |
3605 | p = vfile; | |
3606 | if (*p == '[' || *p == '<') | |
3607 | { | |
3608 | while (*++vfile != *p + 2) | |
3609 | switch (*vfile) | |
3610 | { | |
3611 | case '.': | |
3612 | if (vfile[-1] == *p) | |
3613 | *targ++ = '.'; | |
3614 | *targ++ = '/'; | |
3615 | break; | |
3616 | ||
3617 | case '-': | |
3618 | *targ++ = '.'; | |
3619 | *targ++ = '.'; | |
3620 | break; | |
3621 | ||
3622 | default: | |
3623 | *targ++ = *vfile; | |
3624 | break; | |
3625 | } | |
3626 | vfile++; | |
3627 | *targ++ = '/'; | |
3628 | } | |
3629 | while (*vfile) | |
3630 | *targ++ = *vfile++; | |
3631 | ||
3632 | return vtbuf; | |
3633 | } | |
3634 | ||
3635 | static char utbuf[NAM$C_MAXRSS+1]; | |
3636 | ||
3637 | /* translate a unix path to a VMS file spec */ | |
3638 | char * | |
3639 | sys_translate_unix (ufile) | |
3640 | char * ufile; | |
3641 | { | |
3642 | int slash_seen = 0; | |
3643 | char *p; | |
3644 | char * targ; | |
3645 | ||
3646 | if (!ufile) | |
3647 | return 0; | |
3648 | ||
3649 | targ = utbuf; | |
3650 | ||
3651 | if (*ufile == '/') | |
3652 | { | |
3653 | ufile++; | |
3654 | } | |
3655 | ||
3656 | while (*ufile) | |
3657 | { | |
3658 | switch (*ufile) | |
3659 | { | |
3660 | case '/': | |
3661 | if (slash_seen) | |
3662 | if (index (&ufile[1], '/')) | |
3663 | *targ++ = '.'; | |
3664 | else | |
3665 | *targ++ = ']'; | |
3666 | else | |
3667 | { | |
3668 | *targ++ = ':'; | |
3669 | if (index (&ufile[1], '/')) | |
3670 | *targ++ = '['; | |
3671 | slash_seen = 1; | |
3672 | } | |
3673 | break; | |
3674 | ||
3675 | case '.': | |
3676 | if (strncmp (ufile, "./", 2) == 0) | |
3677 | { | |
3678 | if (!slash_seen) | |
3679 | { | |
3680 | *targ++ = '['; | |
3681 | slash_seen = 1; | |
3682 | } | |
3683 | ufile++; /* skip the dot */ | |
3684 | if (index (&ufile[1], '/')) | |
3685 | *targ++ = '.'; | |
3686 | else | |
3687 | *targ++ = ']'; | |
3688 | } | |
3689 | else if (strncmp (ufile, "../", 3) == 0) | |
3690 | { | |
3691 | if (!slash_seen) | |
3692 | { | |
3693 | *targ++ = '['; | |
3694 | slash_seen = 1; | |
3695 | } | |
3696 | *targ++ = '-'; | |
3697 | ufile += 2; /* skip the dots */ | |
3698 | if (index (&ufile[1], '/')) | |
3699 | *targ++ = '.'; | |
3700 | else | |
3701 | *targ++ = ']'; | |
3702 | } | |
3703 | else | |
3704 | *targ++ = *ufile; | |
3705 | break; | |
3706 | ||
3707 | default: | |
3708 | *targ++ = *ufile; | |
3709 | break; | |
3710 | } | |
3711 | ufile++; | |
3712 | } | |
3713 | *targ = '\0'; | |
3714 | ||
3715 | return utbuf; | |
3716 | } | |
3717 | ||
3718 | char * | |
3719 | getwd (pathname) | |
3720 | char *pathname; | |
3721 | { | |
f4a7e5bd | 3722 | char *ptr, *val; |
210b2b4f | 3723 | extern char *getcwd (); |
86a5659e | 3724 | |
210b2b4f JB |
3725 | #define MAXPATHLEN 1024 |
3726 | ||
9ac0d9e0 | 3727 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
3728 | val = getcwd (ptr, MAXPATHLEN); |
3729 | if (val == 0) | |
3730 | { | |
3731 | xfree (ptr); | |
3732 | return val; | |
3733 | } | |
210b2b4f | 3734 | strcpy (pathname, ptr); |
9ac0d9e0 | 3735 | xfree (ptr); |
210b2b4f JB |
3736 | |
3737 | return pathname; | |
86a5659e JB |
3738 | } |
3739 | ||
3740 | getppid () | |
3741 | { | |
3742 | long item_code = JPI$_OWNER; | |
3743 | unsigned long parent_id; | |
3744 | int status; | |
3745 | ||
3746 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
3747 | { | |
3748 | errno = EVMSERR; | |
3749 | vaxc$errno = status; | |
3750 | return -1; | |
3751 | } | |
3752 | return parent_id; | |
3753 | } | |
3754 | ||
3755 | #undef getuid | |
3756 | unsigned | |
3757 | sys_getuid () | |
3758 | { | |
3759 | return (getgid () << 16) | getuid (); | |
3760 | } | |
3761 | ||
3762 | int | |
3763 | sys_read (fildes, buf, nbyte) | |
3764 | int fildes; | |
3765 | char *buf; | |
3766 | unsigned int nbyte; | |
3767 | { | |
3768 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
3769 | } | |
3770 | ||
3771 | #if 0 | |
3772 | int | |
3773 | sys_write (fildes, buf, nbyte) | |
3774 | int fildes; | |
3775 | char *buf; | |
3776 | unsigned int nbyte; | |
3777 | { | |
3778 | register int nwrote, rtnval = 0; | |
3779 | ||
3780 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
3781 | nbyte -= nwrote; | |
3782 | buf += nwrote; | |
3783 | rtnval += nwrote; | |
3784 | } | |
3785 | if (nwrote < 0) | |
3786 | return rtnval ? rtnval : -1; | |
3787 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
3788 | return rtnval ? rtnval : -1; | |
3789 | return (rtnval + nwrote); | |
3790 | } | |
3791 | #endif /* 0 */ | |
3792 | ||
3793 | /* | |
3794 | * VAX/VMS VAX C RTL really loses. It insists that records | |
3795 | * end with a newline (carriage return) character, and if they | |
3796 | * don't it adds one (nice of it isn't it!) | |
3797 | * | |
3798 | * Thus we do this stupidity below. | |
3799 | */ | |
3800 | ||
3801 | int | |
3802 | sys_write (fildes, buf, nbytes) | |
3803 | int fildes; | |
3804 | char *buf; | |
3805 | unsigned int nbytes; | |
3806 | { | |
3807 | register char *p; | |
3808 | register char *e; | |
23b0668c JB |
3809 | int sum = 0; |
3810 | struct stat st; | |
3811 | ||
3812 | fstat (fildes, &st); | |
86a5659e | 3813 | p = buf; |
86a5659e JB |
3814 | while (nbytes > 0) |
3815 | { | |
23b0668c JB |
3816 | int len, retval; |
3817 | ||
3818 | /* Handle fixed-length files with carriage control. */ | |
3819 | if (st.st_fab_rfm == FAB$C_FIX | |
3820 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
3821 | { | |
3822 | len = st.st_fab_mrs; | |
3823 | retval = write (fildes, p, min (len, nbytes)); | |
3824 | if (retval != len) | |
3825 | return -1; | |
3826 | retval++; /* This skips the implied carriage control */ | |
3827 | } | |
3828 | else | |
3829 | { | |
3830 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3831 | while (*e != '\n' && e > p) e--; | |
3832 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
3833 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3834 | len = e + 1 - p; | |
3835 | retval = write (fildes, p, len); | |
3836 | if (retval != len) | |
3837 | return -1; | |
3838 | } | |
3839 | p += retval; | |
3840 | sum += retval; | |
86a5659e JB |
3841 | nbytes -= retval; |
3842 | } | |
3843 | return sum; | |
3844 | } | |
3845 | ||
3846 | /* Create file NEW copying its attributes from file OLD. If | |
3847 | OLD is 0 or does not exist, create based on the value of | |
3848 | vms_stmlf_recfm. */ | |
3849 | ||
3850 | /* Protection value the file should ultimately have. | |
3851 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
3852 | static unsigned short int fab_final_pro; | |
3853 | ||
3854 | int | |
3855 | creat_copy_attrs (old, new) | |
3856 | char *old, *new; | |
3857 | { | |
3858 | struct FAB fab = cc$rms_fab; | |
3859 | struct XABPRO xabpro; | |
3860 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
3861 | extern int vms_stmlf_recfm; | |
3862 | ||
3863 | if (old) | |
3864 | { | |
3865 | fab.fab$b_fac = FAB$M_GET; | |
3866 | fab.fab$l_fna = old; | |
3867 | fab.fab$b_fns = strlen (old); | |
3868 | fab.fab$l_xab = (char *) &xabpro; | |
3869 | xabpro = cc$rms_xabpro; | |
3870 | xabpro.xab$l_aclbuf = aclbuf; | |
3871 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
3872 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 3873 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 3874 | { |
986ffb24 | 3875 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3876 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
3877 | if (xabpro.xab$w_acllen > 0) | |
3878 | { | |
3879 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
3880 | /* If the acl buffer was too short, redo open with longer one. | |
3881 | Wouldn't need to do this if there were some system imposed | |
3882 | limit on the size of an ACL, but I can't find any such. */ | |
3883 | { | |
3884 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
3885 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
3886 | if (SYS$OPEN (&fab, 0, 0) & 1) |
3887 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
3888 | else |
3889 | old = 0; | |
3890 | } | |
3891 | } | |
3892 | else | |
3893 | xabpro.xab$l_aclbuf = 0; | |
3894 | } | |
3895 | else | |
3896 | old = 0; | |
3897 | } | |
3898 | fab.fab$l_fna = new; | |
3899 | fab.fab$b_fns = strlen (new); | |
3900 | if (!old) | |
3901 | { | |
3902 | fab.fab$l_xab = 0; | |
3903 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
3904 | fab.fab$b_rat = FAB$M_CR; | |
3905 | } | |
3906 | ||
3907 | /* Set the file protections such that we will be able to manipulate | |
3908 | this file. Once we are done writing and renaming it, we will set | |
3909 | the protections back. */ | |
3910 | if (old) | |
3911 | fab_final_pro = xabpro.xab$w_pro; | |
3912 | else | |
986ffb24 | 3913 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
3914 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
3915 | ||
3916 | /* Create the new file with either default attrs or attrs copied | |
3917 | from old file. */ | |
3918 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
3919 | return -1; | |
986ffb24 | 3920 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3921 | /* As this is a "replacement" for creat, return a file descriptor |
3922 | opened for writing. */ | |
3923 | return open (new, O_WRONLY); | |
3924 | } | |
3925 | ||
3926 | #ifdef creat | |
3927 | #undef creat | |
3928 | #include <varargs.h> | |
3929 | #ifdef __GNUC__ | |
3930 | #ifndef va_count | |
3931 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
3932 | #endif | |
3933 | #endif | |
3934 | ||
3935 | sys_creat (va_alist) | |
3936 | va_dcl | |
3937 | { | |
eb8c3be9 | 3938 | va_list list_incrementer; |
86a5659e JB |
3939 | char *name; |
3940 | int mode; | |
3941 | int rfd; /* related file descriptor */ | |
3942 | int fd; /* Our new file descriptor */ | |
3943 | int count; | |
3944 | struct stat st_buf; | |
3945 | char rfm[12]; | |
3946 | char rat[15]; | |
3947 | char mrs[13]; | |
3948 | char fsz[13]; | |
3949 | extern int vms_stmlf_recfm; | |
3950 | ||
3951 | va_count (count); | |
eb8c3be9 JB |
3952 | va_start (list_incrementer); |
3953 | name = va_arg (list_incrementer, char *); | |
3954 | mode = va_arg (list_incrementer, int); | |
86a5659e | 3955 | if (count > 2) |
eb8c3be9 JB |
3956 | rfd = va_arg (list_incrementer, int); |
3957 | va_end (list_incrementer); | |
86a5659e JB |
3958 | if (count > 2) |
3959 | { | |
3960 | /* Use information from the related file descriptor to set record | |
3961 | format of the newly created file. */ | |
3962 | fstat (rfd, &st_buf); | |
3963 | switch (st_buf.st_fab_rfm) | |
3964 | { | |
3965 | case FAB$C_FIX: | |
3966 | strcpy (rfm, "rfm = fix"); | |
3967 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
3968 | strcpy (rat, "rat = "); | |
3969 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3970 | strcat (rat, "cr"); | |
3971 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3972 | strcat (rat, "ftn"); | |
3973 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3974 | strcat (rat, "prn"); | |
3975 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3976 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3977 | strcat (rat, ", blk"); | |
3978 | else | |
3979 | strcat (rat, "blk"); | |
3980 | return creat (name, 0, rfm, rat, mrs); | |
3981 | ||
3982 | case FAB$C_VFC: | |
3983 | strcpy (rfm, "rfm = vfc"); | |
3984 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
3985 | strcpy (rat, "rat = "); | |
3986 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3987 | strcat (rat, "cr"); | |
3988 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3989 | strcat (rat, "ftn"); | |
3990 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3991 | strcat (rat, "prn"); | |
3992 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3993 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3994 | strcat (rat, ", blk"); | |
3995 | else | |
3996 | strcat (rat, "blk"); | |
3997 | return creat (name, 0, rfm, rat, fsz); | |
3998 | ||
3999 | case FAB$C_STM: | |
4000 | strcpy (rfm, "rfm = stm"); | |
4001 | break; | |
4002 | ||
4003 | case FAB$C_STMCR: | |
4004 | strcpy (rfm, "rfm = stmcr"); | |
4005 | break; | |
4006 | ||
4007 | case FAB$C_STMLF: | |
4008 | strcpy (rfm, "rfm = stmlf"); | |
4009 | break; | |
4010 | ||
4011 | case FAB$C_UDF: | |
4012 | strcpy (rfm, "rfm = udf"); | |
4013 | break; | |
4014 | ||
4015 | case FAB$C_VAR: | |
4016 | strcpy (rfm, "rfm = var"); | |
4017 | break; | |
4018 | } | |
4019 | strcpy (rat, "rat = "); | |
4020 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4021 | strcat (rat, "cr"); | |
4022 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4023 | strcat (rat, "ftn"); | |
4024 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4025 | strcat (rat, "prn"); | |
4026 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4027 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4028 | strcat (rat, ", blk"); | |
4029 | else | |
4030 | strcat (rat, "blk"); | |
4031 | } | |
4032 | else | |
4033 | { | |
4034 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4035 | strcpy (rat, "rat=cr"); | |
4036 | } | |
4037 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4038 | mode 0 to get the user's default protection. */ | |
4039 | fd = creat (name, 0, rfm, rat); | |
4040 | if (fd < 0 && errno == EEXIST) | |
4041 | { | |
4042 | if (unlink (name) < 0) | |
4043 | report_file_error ("delete", build_string (name)); | |
4044 | fd = creat (name, 0, rfm, rat); | |
4045 | } | |
4046 | return fd; | |
4047 | } | |
4048 | #endif /* creat */ | |
4049 | ||
4050 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
4051 | sys_fwrite (ptr, size, num, fp) | |
4052 | register char * ptr; | |
4053 | FILE * fp; | |
4054 | { | |
4055 | register int tot = num * size; | |
4056 | ||
4057 | while (tot--) | |
4058 | fputc (*ptr++, fp); | |
4059 | } | |
4060 | ||
4061 | /* | |
4062 | * The VMS C library routine creat actually creates a new version of an | |
4063 | * existing file rather than truncating the old version. There are times | |
4064 | * when this is not the desired behavior, for instance, when writing an | |
4065 | * auto save file (you only want one version), or when you don't have | |
4066 | * write permission in the directory containing the file (but the file | |
4067 | * itself is writable). Hence this routine, which is equivalent to | |
4068 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4069 | */ | |
4070 | int | |
4071 | vms_truncate (fn) | |
4072 | char *fn; | |
4073 | { | |
4074 | struct FAB xfab = cc$rms_fab; | |
4075 | struct RAB xrab = cc$rms_rab; | |
4076 | int status; | |
4077 | ||
4078 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4079 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4080 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4081 | xfab.fab$l_fna = fn; | |
4082 | xfab.fab$b_fns = strlen (fn); | |
4083 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4084 | xfab.fab$b_dns = 2; | |
4085 | xrab.rab$l_fab = &xfab; | |
4086 | ||
4087 | /* This gibberish opens the file, positions to the first record, and | |
4088 | deletes all records from there until the end of file. */ | |
986ffb24 | 4089 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4090 | { |
986ffb24 JB |
4091 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4092 | (SYS$FIND (&xrab) & 01) == 01 && | |
4093 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4094 | status = 0; |
4095 | else | |
4096 | status = -1; | |
4097 | } | |
4098 | else | |
4099 | status = -1; | |
986ffb24 | 4100 | SYS$CLOSE (&xfab); |
86a5659e JB |
4101 | return status; |
4102 | } | |
4103 | ||
4104 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4105 | SYSPRV or a readable SYSUAF.DAT. */ | |
4106 | ||
4107 | #ifdef READ_SYSUAF | |
4108 | /* | |
4109 | * getuaf.c | |
4110 | * | |
4111 | * Routine to read the VMS User Authorization File and return | |
4112 | * a specific user's record. | |
4113 | */ | |
4114 | ||
4115 | static struct UAF retuaf; | |
4116 | ||
4117 | struct UAF * | |
4118 | get_uaf_name (uname) | |
4119 | char * uname; | |
4120 | { | |
4121 | register status; | |
4122 | struct FAB uaf_fab; | |
4123 | struct RAB uaf_rab; | |
4124 | ||
4125 | uaf_fab = cc$rms_fab; | |
4126 | uaf_rab = cc$rms_rab; | |
4127 | /* initialize fab fields */ | |
4128 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4129 | uaf_fab.fab$b_fns = 21; | |
4130 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4131 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4132 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4133 | /* initialize rab fields */ | |
4134 | uaf_rab.rab$l_fab = &uaf_fab; | |
4135 | /* open the User Authorization File */ | |
986ffb24 | 4136 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4137 | if (!(status&1)) |
4138 | { | |
4139 | errno = EVMSERR; | |
4140 | vaxc$errno = status; | |
4141 | return 0; | |
4142 | } | |
986ffb24 | 4143 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4144 | if (!(status&1)) |
4145 | { | |
4146 | errno = EVMSERR; | |
4147 | vaxc$errno = status; | |
4148 | return 0; | |
4149 | } | |
4150 | /* read the requested record - index is in uname */ | |
4151 | uaf_rab.rab$l_kbf = uname; | |
4152 | uaf_rab.rab$b_ksz = strlen (uname); | |
4153 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4154 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4155 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4156 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4157 | if (!(status&1)) |
4158 | { | |
4159 | errno = EVMSERR; | |
4160 | vaxc$errno = status; | |
4161 | return 0; | |
4162 | } | |
4163 | /* close the User Authorization File */ | |
986ffb24 | 4164 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4165 | if (!(status&1)) |
4166 | { | |
4167 | errno = EVMSERR; | |
4168 | vaxc$errno = status; | |
4169 | return 0; | |
4170 | } | |
986ffb24 | 4171 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4172 | if (!(status&1)) |
4173 | { | |
4174 | errno = EVMSERR; | |
4175 | vaxc$errno = status; | |
4176 | return 0; | |
4177 | } | |
4178 | return &retuaf; | |
4179 | } | |
4180 | ||
4181 | struct UAF * | |
4182 | get_uaf_uic (uic) | |
4183 | unsigned long uic; | |
4184 | { | |
4185 | register status; | |
4186 | struct FAB uaf_fab; | |
4187 | struct RAB uaf_rab; | |
4188 | ||
4189 | uaf_fab = cc$rms_fab; | |
4190 | uaf_rab = cc$rms_rab; | |
4191 | /* initialize fab fields */ | |
4192 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4193 | uaf_fab.fab$b_fns = 21; | |
4194 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4195 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4196 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4197 | /* initialize rab fields */ | |
4198 | uaf_rab.rab$l_fab = &uaf_fab; | |
4199 | /* open the User Authorization File */ | |
986ffb24 | 4200 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4201 | if (!(status&1)) |
4202 | { | |
4203 | errno = EVMSERR; | |
4204 | vaxc$errno = status; | |
4205 | return 0; | |
4206 | } | |
986ffb24 | 4207 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4208 | if (!(status&1)) |
4209 | { | |
4210 | errno = EVMSERR; | |
4211 | vaxc$errno = status; | |
4212 | return 0; | |
4213 | } | |
4214 | /* read the requested record - index is in uic */ | |
4215 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4216 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4217 | uaf_rab.rab$b_ksz = sizeof uic; | |
4218 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4219 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4220 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4221 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4222 | if (!(status&1)) |
4223 | { | |
4224 | errno = EVMSERR; | |
4225 | vaxc$errno = status; | |
4226 | return 0; | |
4227 | } | |
4228 | /* close the User Authorization File */ | |
986ffb24 | 4229 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4230 | if (!(status&1)) |
4231 | { | |
4232 | errno = EVMSERR; | |
4233 | vaxc$errno = status; | |
4234 | return 0; | |
4235 | } | |
986ffb24 | 4236 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4237 | if (!(status&1)) |
4238 | { | |
4239 | errno = EVMSERR; | |
4240 | vaxc$errno = status; | |
4241 | return 0; | |
4242 | } | |
4243 | return &retuaf; | |
4244 | } | |
4245 | ||
4246 | static struct passwd retpw; | |
4247 | ||
4248 | struct passwd * | |
4249 | cnv_uaf_pw (up) | |
4250 | struct UAF * up; | |
4251 | { | |
4252 | char * ptr; | |
4253 | ||
4254 | /* copy these out first because if the username is 32 chars, the next | |
4255 | section will overwrite the first byte of the UIC */ | |
4256 | retpw.pw_uid = up->uaf$w_mem; | |
4257 | retpw.pw_gid = up->uaf$w_grp; | |
4258 | ||
4259 | /* I suppose this is not the best sytle, to possibly overwrite one | |
4260 | byte beyond the end of the field, but what the heck... */ | |
4261 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4262 | while (ptr[-1] == ' ') | |
4263 | ptr--; | |
4264 | *ptr = '\0'; | |
4265 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4266 | ||
4267 | /* the rest of these are counted ascii strings */ | |
4268 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4269 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4270 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4271 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4272 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4273 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4274 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4275 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4276 | ||
4277 | return &retpw; | |
4278 | } | |
4279 | #else /* not READ_SYSUAF */ | |
4280 | static struct passwd retpw; | |
4281 | #endif /* not READ_SYSUAF */ | |
4282 | ||
4283 | struct passwd * | |
4284 | getpwnam (name) | |
4285 | char * name; | |
4286 | { | |
4287 | #ifdef READ_SYSUAF | |
4288 | struct UAF *up; | |
4289 | #else | |
4290 | char * user; | |
4291 | char * dir; | |
4292 | unsigned char * full; | |
4293 | #endif /* READ_SYSUAF */ | |
4294 | char *ptr = name; | |
4295 | ||
4296 | while (*ptr) | |
4297 | { | |
4298 | if ('a' <= *ptr && *ptr <= 'z') | |
4299 | *ptr -= 040; | |
4300 | ptr++; | |
4301 | } | |
4302 | #ifdef READ_SYSUAF | |
4303 | if (!(up = get_uaf_name (name))) | |
4304 | return 0; | |
4305 | return cnv_uaf_pw (up); | |
4306 | #else | |
4307 | if (strcmp (name, getenv ("USER")) == 0) | |
4308 | { | |
4309 | retpw.pw_uid = getuid (); | |
4310 | retpw.pw_gid = getgid (); | |
4311 | strcpy (retpw.pw_name, name); | |
4312 | if (full = egetenv ("FULLNAME")) | |
4313 | strcpy (retpw.pw_gecos, full); | |
4314 | else | |
4315 | *retpw.pw_gecos = '\0'; | |
4316 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4317 | *retpw.pw_shell = '\0'; | |
4318 | return &retpw; | |
4319 | } | |
4320 | else | |
4321 | return 0; | |
4322 | #endif /* not READ_SYSUAF */ | |
4323 | } | |
4324 | ||
4325 | struct passwd * | |
4326 | getpwuid (uid) | |
4327 | unsigned long uid; | |
4328 | { | |
4329 | #ifdef READ_SYSUAF | |
4330 | struct UAF * up; | |
4331 | ||
4332 | if (!(up = get_uaf_uic (uid))) | |
4333 | return 0; | |
4334 | return cnv_uaf_pw (up); | |
4335 | #else | |
4336 | if (uid == sys_getuid ()) | |
4337 | return getpwnam (egetenv ("USER")); | |
4338 | else | |
4339 | return 0; | |
4340 | #endif /* not READ_SYSUAF */ | |
4341 | } | |
4342 | ||
4343 | /* return total address space available to the current process. This is | |
4344 | the sum of the current p0 size, p1 size and free page table entries | |
4345 | available. */ | |
4346 | vlimit () | |
4347 | { | |
4348 | int item_code; | |
4349 | unsigned long free_pages; | |
4350 | unsigned long frep0va; | |
4351 | unsigned long frep1va; | |
4352 | register status; | |
4353 | ||
4354 | item_code = JPI$_FREPTECNT; | |
4355 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4356 | { | |
4357 | errno = EVMSERR; | |
4358 | vaxc$errno = status; | |
4359 | return -1; | |
4360 | } | |
4361 | free_pages *= 512; | |
4362 | ||
4363 | item_code = JPI$_FREP0VA; | |
4364 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4365 | { | |
4366 | errno = EVMSERR; | |
4367 | vaxc$errno = status; | |
4368 | return -1; | |
4369 | } | |
4370 | item_code = JPI$_FREP1VA; | |
4371 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4372 | { | |
4373 | errno = EVMSERR; | |
4374 | vaxc$errno = status; | |
4375 | return -1; | |
4376 | } | |
4377 | ||
4378 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4379 | } | |
4380 | ||
4381 | define_logical_name (varname, string) | |
4382 | char *varname; | |
4383 | char *string; | |
4384 | { | |
4385 | struct dsc$descriptor_s strdsc = | |
4386 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4387 | struct dsc$descriptor_s envdsc = | |
4388 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4389 | struct dsc$descriptor_s lnmdsc = | |
4390 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4391 | ||
4392 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4393 | } | |
4394 | ||
4395 | delete_logical_name (varname) | |
4396 | char *varname; | |
4397 | { | |
4398 | struct dsc$descriptor_s envdsc = | |
4399 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4400 | struct dsc$descriptor_s lnmdsc = | |
4401 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4402 | ||
4403 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4404 | } | |
4405 | ||
4406 | ulimit () | |
4407 | {} | |
4408 | ||
86a5659e JB |
4409 | setpgrp () |
4410 | {} | |
4411 | ||
4412 | execvp () | |
4413 | { | |
4414 | error ("execvp system call not implemented"); | |
4415 | } | |
4416 | ||
4417 | int | |
4418 | rename (from, to) | |
4419 | char *from, *to; | |
4420 | { | |
4421 | int status; | |
4422 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4423 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4424 | char from_esn[NAM$C_MAXRSS]; | |
4425 | char to_esn[NAM$C_MAXRSS]; | |
4426 | ||
4427 | from_fab.fab$l_fna = from; | |
4428 | from_fab.fab$b_fns = strlen (from); | |
4429 | from_fab.fab$l_nam = &from_nam; | |
4430 | from_fab.fab$l_fop = FAB$M_NAM; | |
4431 | ||
4432 | from_nam.nam$l_esa = from_esn; | |
4433 | from_nam.nam$b_ess = sizeof from_esn; | |
4434 | ||
4435 | to_fab.fab$l_fna = to; | |
4436 | to_fab.fab$b_fns = strlen (to); | |
4437 | to_fab.fab$l_nam = &to_nam; | |
4438 | to_fab.fab$l_fop = FAB$M_NAM; | |
4439 | ||
4440 | to_nam.nam$l_esa = to_esn; | |
4441 | to_nam.nam$b_ess = sizeof to_esn; | |
4442 | ||
4443 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4444 | ||
4445 | if (status & 1) | |
4446 | return 0; | |
4447 | else | |
4448 | { | |
4449 | if (status == RMS$_DEV) | |
4450 | errno = EXDEV; | |
4451 | else | |
4452 | errno = EVMSERR; | |
4453 | vaxc$errno = status; | |
4454 | return -1; | |
4455 | } | |
4456 | } | |
4457 | ||
4458 | /* This function renames a file like `rename', but it strips | |
4459 | the version number from the "to" filename, such that the "to" file is | |
4460 | will always be a new version. It also sets the file protection once it is | |
4461 | finished. The protection that we will use is stored in fab_final_pro, | |
4462 | and was set when we did a creat_copy_attrs to create the file that we | |
4463 | are renaming. | |
4464 | ||
4465 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4466 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4467 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4468 | the W and D bits together. */ | |
4469 | ||
4470 | ||
4471 | static struct fibdef fib; /* We need this initialized to zero */ | |
4472 | char vms_file_written[NAM$C_MAXRSS]; | |
4473 | ||
4474 | int | |
4475 | rename_sans_version (from,to) | |
4476 | char *from, *to; | |
4477 | { | |
4478 | short int chan; | |
4479 | int stat; | |
4480 | short int iosb[4]; | |
4481 | int status; | |
4482 | struct FAB to_fab = cc$rms_fab; | |
4483 | struct NAM to_nam = cc$rms_nam; | |
4484 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4485 | struct dsc$descriptor fib_attr[2] | |
4486 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4487 | char to_esn[NAM$C_MAXRSS]; | |
4488 | ||
4489 | $DESCRIPTOR (disk,to_esn); | |
4490 | ||
4491 | to_fab.fab$l_fna = to; | |
4492 | to_fab.fab$b_fns = strlen (to); | |
4493 | to_fab.fab$l_nam = &to_nam; | |
4494 | to_fab.fab$l_fop = FAB$M_NAM; | |
4495 | ||
4496 | to_nam.nam$l_esa = to_esn; | |
4497 | to_nam.nam$b_ess = sizeof to_esn; | |
4498 | ||
4499 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4500 | ||
4501 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4502 | *(to_nam.nam$l_ver) = '\0'; | |
4503 | ||
4504 | stat = rename (from, to_esn); | |
4505 | if (stat < 0) | |
4506 | return stat; | |
4507 | ||
4508 | strcpy (vms_file_written, to_esn); | |
4509 | ||
4510 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4511 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4512 | ||
4513 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4514 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4515 | |
4516 | /* Copy these fields into the fib */ | |
4517 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4518 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4519 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4520 | ||
986ffb24 | 4521 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4522 | |
986ffb24 | 4523 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4524 | if (!stat) |
986ffb24 JB |
4525 | LIB$SIGNAL (stat); |
4526 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4527 | 0, 0, 0, &fib_attr, 0); |
4528 | if (!stat) | |
986ffb24 JB |
4529 | LIB$SIGNAL (stat); |
4530 | stat = SYS$DASSGN (chan); | |
86a5659e | 4531 | if (!stat) |
986ffb24 | 4532 | LIB$SIGNAL (stat); |
0137dbf7 | 4533 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4534 | return 0; |
4535 | } | |
4536 | ||
4537 | link (file, new) | |
4538 | char * file, * new; | |
4539 | { | |
4540 | register status; | |
4541 | struct FAB fab; | |
4542 | struct NAM nam; | |
4543 | unsigned short fid[3]; | |
4544 | char esa[NAM$C_MAXRSS]; | |
4545 | ||
4546 | fab = cc$rms_fab; | |
4547 | fab.fab$l_fop = FAB$M_OFP; | |
4548 | fab.fab$l_fna = file; | |
4549 | fab.fab$b_fns = strlen (file); | |
4550 | fab.fab$l_nam = &nam; | |
4551 | ||
4552 | nam = cc$rms_nam; | |
4553 | nam.nam$l_esa = esa; | |
4554 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4555 | ||
4556 | status = SYS$PARSE (&fab); | |
4557 | if ((status & 1) == 0) | |
4558 | { | |
4559 | errno = EVMSERR; | |
4560 | vaxc$errno = status; | |
4561 | return -1; | |
4562 | } | |
4563 | status = SYS$SEARCH (&fab); | |
4564 | if ((status & 1) == 0) | |
4565 | { | |
4566 | errno = EVMSERR; | |
4567 | vaxc$errno = status; | |
4568 | return -1; | |
4569 | } | |
4570 | ||
4571 | fid[0] = nam.nam$w_fid[0]; | |
4572 | fid[1] = nam.nam$w_fid[1]; | |
4573 | fid[2] = nam.nam$w_fid[2]; | |
4574 | ||
4575 | fab.fab$l_fna = new; | |
4576 | fab.fab$b_fns = strlen (new); | |
4577 | ||
4578 | status = SYS$PARSE (&fab); | |
4579 | if ((status & 1) == 0) | |
4580 | { | |
4581 | errno = EVMSERR; | |
4582 | vaxc$errno = status; | |
4583 | return -1; | |
4584 | } | |
4585 | ||
4586 | nam.nam$w_fid[0] = fid[0]; | |
4587 | nam.nam$w_fid[1] = fid[1]; | |
4588 | nam.nam$w_fid[2] = fid[2]; | |
4589 | ||
4590 | nam.nam$l_esa = nam.nam$l_name; | |
4591 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
4592 | ||
4593 | status = SYS$ENTER (&fab); | |
4594 | if ((status & 1) == 0) | |
4595 | { | |
4596 | errno = EVMSERR; | |
4597 | vaxc$errno = status; | |
4598 | return -1; | |
4599 | } | |
4600 | ||
4601 | return 0; | |
4602 | } | |
4603 | ||
4604 | croak (badfunc) | |
4605 | char *badfunc; | |
4606 | { | |
4607 | printf ("%s not yet implemented\r\n", badfunc); | |
4608 | reset_sys_modes (); | |
4609 | exit (1); | |
4610 | } | |
4611 | ||
4612 | long | |
4613 | random () | |
4614 | { | |
4615 | /* Arrange to return a range centered on zero. */ | |
4616 | return rand () - (1 << 30); | |
4617 | } | |
4618 | ||
4619 | srandom (seed) | |
4620 | { | |
4621 | srand (seed); | |
4622 | } | |
4623 | #endif /* VMS */ | |
4624 | \f | |
4625 | #ifdef AIX | |
4626 | ||
4627 | /* Called from init_sys_modes. */ | |
4628 | hft_init () | |
4629 | { | |
4630 | int junk; | |
4631 | ||
4632 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
4633 | if we are on an HFT by trying to get an HFT error code. If this | |
4634 | call fails, we're not on an HFT. */ | |
4635 | #ifdef IBMR2AIX | |
4636 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4637 | return; | |
4638 | #else /* not IBMR2AIX */ | |
4639 | if (ioctl (0, HFQEIO, 0) < 0) | |
4640 | return; | |
4641 | #endif /* not IBMR2AIX */ | |
4642 | ||
4643 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
4644 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
4645 | there's no way to determine the old mapping, so in reset_sys_modes | |
4646 | we need to assume that the normal map had been present. Of course, this | |
4647 | code also doesn't help if on a terminal emulator which doesn't understand | |
4648 | HFT VTD's. */ | |
4649 | { | |
4650 | struct hfbuf buf; | |
4651 | struct hfkeymap keymap; | |
4652 | ||
4653 | buf.hf_bufp = (char *)&keymap; | |
4654 | buf.hf_buflen = sizeof (keymap); | |
4655 | keymap.hf_nkeys = 2; | |
4656 | keymap.hfkey[0].hf_kpos = 15; | |
4657 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4658 | #ifdef IBMR2AIX | |
4659 | keymap.hfkey[0].hf_keyidh = '<'; | |
4660 | #else /* not IBMR2AIX */ | |
4661 | keymap.hfkey[0].hf_page = '<'; | |
4662 | #endif /* not IBMR2AIX */ | |
4663 | keymap.hfkey[0].hf_char = 127; | |
4664 | keymap.hfkey[1].hf_kpos = 15; | |
4665 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4666 | #ifdef IBMR2AIX | |
4667 | keymap.hfkey[1].hf_keyidh = '<'; | |
4668 | #else /* not IBMR2AIX */ | |
4669 | keymap.hfkey[1].hf_page = '<'; | |
4670 | #endif /* not IBMR2AIX */ | |
4671 | keymap.hfkey[1].hf_char = 127; | |
4672 | hftctl (0, HFSKBD, &buf); | |
4673 | } | |
4674 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
4675 | at times. */ | |
4676 | line_ins_del_ok = char_ins_del_ok = 0; | |
4677 | } | |
4678 | ||
4679 | /* Reset the rubout key to backspace. */ | |
4680 | ||
4681 | hft_reset () | |
4682 | { | |
4683 | struct hfbuf buf; | |
4684 | struct hfkeymap keymap; | |
4685 | int junk; | |
4686 | ||
4687 | #ifdef IBMR2AIX | |
4688 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4689 | return; | |
4690 | #else /* not IBMR2AIX */ | |
4691 | if (ioctl (0, HFQEIO, 0) < 0) | |
4692 | return; | |
4693 | #endif /* not IBMR2AIX */ | |
4694 | ||
4695 | buf.hf_bufp = (char *)&keymap; | |
4696 | buf.hf_buflen = sizeof (keymap); | |
4697 | keymap.hf_nkeys = 2; | |
4698 | keymap.hfkey[0].hf_kpos = 15; | |
4699 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4700 | #ifdef IBMR2AIX | |
4701 | keymap.hfkey[0].hf_keyidh = '<'; | |
4702 | #else /* not IBMR2AIX */ | |
4703 | keymap.hfkey[0].hf_page = '<'; | |
4704 | #endif /* not IBMR2AIX */ | |
4705 | keymap.hfkey[0].hf_char = 8; | |
4706 | keymap.hfkey[1].hf_kpos = 15; | |
4707 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4708 | #ifdef IBMR2AIX | |
4709 | keymap.hfkey[1].hf_keyidh = '<'; | |
4710 | #else /* not IBMR2AIX */ | |
4711 | keymap.hfkey[1].hf_page = '<'; | |
4712 | #endif /* not IBMR2AIX */ | |
4713 | keymap.hfkey[1].hf_char = 8; | |
4714 | hftctl (0, HFSKBD, &buf); | |
4715 | } | |
4716 | ||
4717 | #endif /* AIX */ |