Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
c6c5df7f | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993 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 | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
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 | ||
24 | #include "config.h" | |
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 | ||
67 | extern int errno; | |
68 | #ifndef VMS | |
69 | extern char *sys_errlist[]; | |
70 | #endif | |
71 | ||
72 | #ifdef VMS | |
73 | #include <rms.h> | |
74 | #include <ttdef.h> | |
75 | #include <tt2def.h> | |
76 | #include <iodef.h> | |
77 | #include <ssdef.h> | |
78 | #include <descrip.h> | |
79 | #include <fibdef.h> | |
80 | #include <atrdef.h> | |
81 | #include <ctype.h> | |
82 | #include <string.h> | |
83 | #ifdef __GNUC__ | |
84 | #include <sys/file.h> | |
85 | #else | |
86 | #include <file.h> | |
87 | #endif | |
88 | #undef F_SETFL | |
89 | #ifndef RAB$C_BID | |
90 | #include <rab.h> | |
91 | #endif | |
92 | #define MAXIOSIZE ( 32 * PAGESIZE ) /* Don't I/O more than 32 blocks at a time */ | |
93 | #endif /* VMS */ | |
94 | ||
95 | #ifndef BSD4_1 | |
96 | #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG) | |
97 | because the vms compiler doesn't grok `defined' */ | |
98 | #include <fcntl.h> | |
99 | #endif | |
100 | #ifdef USG | |
34567704 | 101 | #ifndef USG5 |
86a5659e JB |
102 | #include <fcntl.h> |
103 | #endif | |
34567704 | 104 | #endif |
86a5659e JB |
105 | #endif /* not 4.1 bsd */ |
106 | ||
411c533f JB |
107 | #ifdef BROKEN_FASYNC |
108 | /* On some systems (DGUX comes to mind real fast) FASYNC causes | |
109 | background writes to the terminal to stop all processes in the | |
110 | process group when invoked under the csh (and probably any shell | |
111 | with job control). This stops Emacs dead in its tracks when coming | |
112 | up under X11. */ | |
113 | #undef FASYNC | |
114 | #endif | |
86a5659e JB |
115 | |
116 | #include <sys/ioctl.h> | |
e04a4e0d | 117 | #include "systty.h" |
94c8642a | 118 | #include "syswait.h" |
86a5659e | 119 | |
86a5659e JB |
120 | #ifdef BROKEN_TIOCGWINSZ |
121 | #undef TIOCGWINSZ | |
122 | #endif | |
123 | ||
86a5659e JB |
124 | #ifdef USG |
125 | #include <sys/utsname.h> | |
126 | #include <string.h> | |
127 | #ifndef MEMORY_IN_STRING_H | |
128 | #include <memory.h> | |
129 | #endif | |
130 | #ifdef TIOCGWINSZ | |
131 | #ifdef NEED_SIOCTL | |
132 | #include <sys/sioctl.h> | |
133 | #endif | |
134 | #ifdef NEED_PTEM_H | |
135 | #include <sys/stream.h> | |
136 | #include <sys/ptem.h> | |
137 | #endif | |
138 | #endif /* TIOCGWINSZ */ | |
86a5659e JB |
139 | #endif /* USG */ |
140 | ||
86a5659e JB |
141 | extern int quit_char; |
142 | ||
0137dbf7 | 143 | #include "frame.h" |
86a5659e JB |
144 | #include "window.h" |
145 | #include "termhooks.h" | |
146 | #include "termchar.h" | |
147 | #include "termopts.h" | |
148 | #include "dispextern.h" | |
149 | #include "process.h" | |
150 | ||
151 | #ifdef NONSYSTEM_DIR_LIBRARY | |
152 | #include "ndir.h" | |
153 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
154 | ||
91bac16a JB |
155 | #include "syssignal.h" |
156 | #include "systime.h" | |
86a5659e JB |
157 | |
158 | static int baud_convert[] = | |
159 | #ifdef BAUD_CONVERT | |
160 | BAUD_CONVERT; | |
161 | #else | |
162 | { | |
163 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
164 | 1800, 2400, 4800, 9600, 19200, 38400 | |
165 | }; | |
166 | #endif | |
167 | ||
168 | extern short ospeed; | |
169 | ||
91bac16a | 170 | /* The file descriptor for Emacs's input terminal. |
64e971c3 | 171 | Under Unix, this is normaly zero except when using X; |
91bac16a JB |
172 | under VMS, we place the input channel number here. |
173 | This allows us to write more code that works for both VMS and Unix. */ | |
174 | static int input_fd; | |
64e971c3 RS |
175 | \f |
176 | /* Specify a different file descriptor for further input operations. */ | |
177 | ||
178 | void | |
179 | change_input_fd (fd) | |
180 | int fd; | |
181 | { | |
182 | input_fd = fd; | |
183 | } | |
184 | ||
185 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 186 | |
86a5659e JB |
187 | discard_tty_input () |
188 | { | |
91bac16a | 189 | struct emacs_tty buf; |
86a5659e JB |
190 | |
191 | if (noninteractive) | |
192 | return; | |
193 | ||
194 | /* Discarding input is not safe when the input could contain | |
195 | replies from the X server. So don't do it. */ | |
196 | if (read_socket_hook) | |
197 | return; | |
198 | ||
199 | #ifdef VMS | |
200 | end_kbd_input (); | |
91bac16a JB |
201 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
202 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
203 | queue_kbd_input (); |
204 | #else /* not VMS */ | |
205 | #ifdef APOLLO | |
206 | { | |
207 | int zero = 0; | |
64e971c3 | 208 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
209 | } |
210 | #else /* not Apollo */ | |
91bac16a JB |
211 | EMACS_GET_TTY (input_fd, &buf); |
212 | EMACS_SET_TTY (input_fd, &buf, 0); | |
86a5659e JB |
213 | #endif /* not Apollo */ |
214 | #endif /* not VMS */ | |
215 | } | |
216 | ||
217 | #ifdef SIGTSTP | |
218 | ||
64e971c3 RS |
219 | /* Arrange for character C to be read as the next input from |
220 | the terminal. */ | |
221 | ||
86a5659e JB |
222 | stuff_char (c) |
223 | char c; | |
224 | { | |
225 | /* Should perhaps error if in batch mode */ | |
226 | #ifdef TIOCSTI | |
64e971c3 | 227 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e JB |
228 | #else /* no TIOCSTI */ |
229 | error ("Cannot stuff terminal input characters in this version of Unix."); | |
230 | #endif /* no TIOCSTI */ | |
231 | } | |
232 | ||
233 | #endif /* SIGTSTP */ | |
64e971c3 | 234 | \f |
86a5659e JB |
235 | init_baud_rate () |
236 | { | |
86a5659e JB |
237 | if (noninteractive) |
238 | ospeed = 0; | |
239 | else | |
240 | { | |
241 | #ifdef VMS | |
91bac16a JB |
242 | struct sensemode sg; |
243 | ||
244 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 245 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
246 | ospeed = sg.xmit_baud; |
247 | #else /* not VMS */ | |
e04a4e0d JB |
248 | #ifdef HAVE_TERMIOS |
249 | struct termios sg; | |
91bac16a JB |
250 | |
251 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | B9600; | |
64e971c3 | 252 | tcgetattr (input_fd, &sg); |
d7272cff | 253 | ospeed = cfgetospeed (&sg); |
e04a4e0d JB |
254 | #else /* neither VMS nor TERMIOS */ |
255 | #ifdef HAVE_TERMIO | |
256 | struct termio sg; | |
91bac16a JB |
257 | |
258 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | B9600; | |
e04a4e0d | 259 | #ifdef HAVE_TCATTR |
64e971c3 | 260 | tcgetattr (input_fd, &sg); |
e04a4e0d | 261 | #else |
6c65530f | 262 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 263 | #endif |
91bac16a | 264 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 265 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
266 | struct sgttyb sg; |
267 | ||
268 | sg.sg_ospeed = B9600; | |
64e971c3 | 269 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 270 | abort (); |
91bac16a | 271 | ospeed = sg.sg_ospeed; |
91bac16a | 272 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 273 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 274 | #endif /* not VMS */ |
86a5659e JB |
275 | } |
276 | ||
277 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
278 | ? baud_convert[ospeed] : 9600); | |
279 | if (baud_rate == 0) | |
280 | baud_rate = 1200; | |
281 | } | |
282 | ||
283 | /*ARGSUSED*/ | |
284 | set_exclusive_use (fd) | |
285 | int fd; | |
286 | { | |
287 | #ifdef FIOCLEX | |
288 | ioctl (fd, FIOCLEX, 0); | |
289 | #endif | |
290 | /* Ok to do nothing if this feature does not exist */ | |
291 | } | |
64e971c3 | 292 | \f |
86a5659e JB |
293 | #ifndef subprocesses |
294 | ||
295 | wait_without_blocking () | |
296 | { | |
297 | #ifdef BSD | |
298 | wait3 (0, WNOHANG | WUNTRACED, 0); | |
299 | #else | |
300 | croak ("wait_without_blocking"); | |
301 | #endif | |
302 | synch_process_alive = 0; | |
303 | } | |
304 | ||
305 | #endif /* not subprocesses */ | |
306 | ||
307 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
308 | (at least for bsd). */ | |
309 | ||
310 | SIGTYPE | |
311 | wait_for_termination_signal () | |
312 | {} | |
313 | ||
314 | /* Wait for subprocess with process id `pid' to terminate and | |
315 | make sure it will get eliminated (not remain forever as a zombie) */ | |
316 | ||
317 | wait_for_termination (pid) | |
318 | int pid; | |
319 | { | |
320 | while (1) | |
321 | { | |
322 | #ifdef subprocesses | |
323 | #ifdef VMS | |
324 | int status; | |
325 | ||
986ffb24 | 326 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
327 | break; |
328 | #else /* not VMS */ | |
05695621 | 329 | #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
330 | /* Note that kill returns -1 even if the process is just a zombie now. |
331 | But inevitably a SIGCHLD interrupt should be generated | |
332 | and child_sig will do wait3 and make the process go away. */ | |
333 | /* There is some indication that there is a bug involved with | |
334 | termination of subprocesses, perhaps involving a kernel bug too, | |
335 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
336 | if that causes the problem to go away or get worse. */ | |
337 | sigsetmask (sigmask (SIGCHLD)); | |
338 | if (0 > kill (pid, 0)) | |
339 | { | |
340 | sigsetmask (SIGEMPTYMASK); | |
341 | kill (getpid (), SIGCHLD); | |
342 | break; | |
343 | } | |
344 | if (wait_debugging) | |
345 | sleep (1); | |
346 | else | |
347 | sigpause (SIGEMPTYMASK); | |
05695621 RS |
348 | #else /* not BSD, and not HPUX version >= 6 */ |
349 | #if defined (UNIPLUS) | |
4c8975ad RS |
350 | if (0 > kill (pid, 0)) |
351 | break; | |
352 | wait (0); | |
05695621 | 353 | #else /* neither BSD nor UNIPLUS: random sysV */ |
9ab714c7 RS |
354 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
355 | sigblock (sigmask (SIGCHLD)); | |
356 | if (0 > kill (pid, 0)) | |
357 | { | |
358 | sigunblock (sigmask (SIGCHLD)); | |
359 | break; | |
360 | } | |
92c995de | 361 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 362 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
363 | #ifdef HAVE_SYSV_SIGPAUSE |
364 | sighold (SIGCHLD); | |
365 | if (0 > kill (pid, 0)) | |
366 | { | |
367 | sigrelse (SIGCHLD); | |
368 | break; | |
369 | } | |
370 | sigpause (SIGCHLD); | |
371 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
372 | if (0 > kill (pid, 0)) | |
86a5659e | 373 | break; |
4c8975ad RS |
374 | /* Using sleep instead of pause avoids timing error. |
375 | If the inferior dies just before the sleep, | |
376 | we lose just one second. */ | |
377 | sleep (1); | |
378 | #endif /* not HAVE_SYSV_SIGPAUSE */ | |
9ab714c7 | 379 | #endif /* not POSIX_SIGNALS */ |
4c8975ad RS |
380 | #endif /* not UNIPLUS */ |
381 | #endif /* not BSD, and not HPUX version >= 6 */ | |
86a5659e JB |
382 | #endif /* not VMS */ |
383 | #else /* not subprocesses */ | |
384 | #ifndef BSD4_1 | |
385 | if (kill (pid, 0) < 0) | |
386 | break; | |
387 | wait (0); | |
388 | #else /* BSD4_1 */ | |
389 | int status; | |
390 | status = wait (0); | |
391 | if (status == pid || status == -1) | |
392 | break; | |
393 | #endif /* BSD4_1 */ | |
394 | #endif /* not subprocesses */ | |
395 | } | |
396 | } | |
397 | ||
398 | #ifdef subprocesses | |
399 | ||
400 | /* | |
401 | * flush any pending output | |
402 | * (may flush input as well; it does not matter the way we use it) | |
403 | */ | |
404 | ||
405 | flush_pending_output (channel) | |
406 | int channel; | |
407 | { | |
408 | #ifdef HAVE_TERMIOS | |
409 | /* If we try this, we get hit with SIGTTIN, because | |
410 | the child's tty belongs to the child's pgrp. */ | |
411 | #else | |
412 | #ifdef TCFLSH | |
413 | ioctl (channel, TCFLSH, 1); | |
414 | #else | |
415 | #ifdef TIOCFLUSH | |
416 | int zero = 0; | |
417 | /* 3rd arg should be ignored | |
418 | but some 4.2 kernels actually want the address of an int | |
419 | and nonzero means something different. */ | |
420 | ioctl (channel, TIOCFLUSH, &zero); | |
421 | #endif | |
422 | #endif | |
423 | #endif | |
424 | } | |
64e971c3 | 425 | \f |
86a5659e JB |
426 | #ifndef VMS |
427 | /* Set up the terminal at the other end of a pseudo-terminal that | |
428 | we will be controlling an inferior through. | |
429 | It should not echo or do line-editing, since that is done | |
430 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
431 | ||
432 | child_setup_tty (out) | |
433 | int out; | |
434 | { | |
91bac16a JB |
435 | struct emacs_tty s; |
436 | ||
437 | EMACS_GET_TTY (out, &s); | |
86a5659e | 438 | |
31be8d24 | 439 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
440 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
441 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
442 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); | |
443 | /* No output delays */ | |
444 | s.main.c_lflag &= ~ECHO; /* Disable echo */ | |
445 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
446 | s.main.c_iflag &= ~IUCLC; /* Disable map of upper case to lower on | |
447 | input */ | |
448 | s.main.c_oflag &= ~OLCUC; /* Disable map of lower case to upper on | |
449 | output */ | |
450 | #if 0 | |
eb8c3be9 | 451 | /* Said to be unnecessary: */ |
91bac16a JB |
452 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
453 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
454 | #endif | |
455 | ||
456 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
457 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
458 | s.main.c_cc[VERASE] = 0377; /* disable erase processing */ | |
459 | s.main.c_cc[VKILL] = 0377; /* disable kill processing */ | |
460 | ||
86a5659e | 461 | #ifdef HPUX |
91bac16a | 462 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 463 | #endif /* HPUX */ |
91bac16a | 464 | |
86a5659e JB |
465 | #ifdef AIX |
466 | /* AIX enhanced edit loses NULs, so disable it */ | |
467 | #ifndef IBMR2AIX | |
91bac16a JB |
468 | s.main.c_line = 0; |
469 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
470 | #endif |
471 | /* Also, PTY overloads NUL and BREAK. | |
472 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
473 | s.main.c_iflag &= ~IGNBRK; |
474 | s.main.c_iflag &= ~BRKINT; | |
475 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 476 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
477 | #ifdef SIGNALS_VIA_CHARACTERS |
478 | /* the QUIT and INTR character are used in process_send_signal | |
479 | so set them here to something useful. */ | |
480 | if (s.main.c_cc[VQUIT] == 0377) | |
481 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
482 | if (s.main.c_cc[VINTR] == 0377) | |
483 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
484 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
485 | /* QUIT and INTR work better as signals, so disable character forms */ | |
486 | s.main.c_cc[VQUIT] = 0377; | |
487 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 488 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
489 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
490 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 491 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
492 | #endif /* AIX */ |
493 | ||
494 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
495 | |
496 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
497 | | CBREAK | TANDEM); | |
498 | s.main.sg_erase = 0377; | |
499 | s.main.sg_kill = 0377; | |
500 | ||
86a5659e JB |
501 | #endif /* not HAVE_TERMIO */ |
502 | ||
91bac16a | 503 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
504 | |
505 | #ifdef BSD4_1 | |
506 | if (interrupt_input) | |
507 | reset_sigio (); | |
508 | #endif /* BSD4_1 */ | |
509 | #ifdef RTU | |
510 | { | |
511 | int zero = 0; | |
512 | ioctl (out, FIOASYNC, &zero); | |
513 | } | |
514 | #endif /* RTU */ | |
515 | } | |
516 | #endif /* not VMS */ | |
517 | ||
518 | #endif /* subprocesses */ | |
519 | ||
520 | /*ARGSUSED*/ | |
521 | setpgrp_of_tty (pid) | |
522 | int pid; | |
523 | { | |
ffd56f97 | 524 | EMACS_SET_TTY_PGRP (input_fd, &pid); |
86a5659e | 525 | } |
64e971c3 | 526 | \f |
86a5659e JB |
527 | /* Record a signal code and the handler for it. */ |
528 | struct save_signal | |
529 | { | |
530 | int code; | |
531 | SIGTYPE (*handler) (); | |
532 | }; | |
533 | ||
534 | /* Suspend the Emacs process; give terminal to its superior. */ | |
535 | ||
536 | sys_suspend () | |
537 | { | |
538 | #ifdef VMS | |
88191e36 RS |
539 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
540 | to the current emacs as a cheaper than starting a whole new process. This | |
541 | is set up by KEPTEDITOR.COM. */ | |
542 | unsigned long parent_id, foster_parent_id; | |
543 | char *fpid_string; | |
544 | ||
545 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
546 | if (fpid_string != NULL) | |
547 | { | |
548 | sscanf (fpid_string, "%x", &foster_parent_id); | |
549 | if (foster_parent_id != 0) | |
550 | parent_id = foster_parent_id; | |
551 | else | |
552 | parent_id = getppid (); | |
553 | } | |
554 | else | |
555 | parent_id = getppid (); | |
556 | ||
9ac0d9e0 | 557 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 558 | |
86a5659e JB |
559 | if (parent_id && parent_id != 0xffffffff) |
560 | { | |
561 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
562 | int status = LIB$ATTACH (&parent_id) & 1; | |
563 | signal (SIGINT, oldsig); | |
564 | return status; | |
565 | } | |
566 | else | |
567 | { | |
568 | struct { | |
569 | int l; | |
570 | char *a; | |
571 | } d_prompt; | |
572 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
573 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 574 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
575 | return 1; |
576 | } | |
577 | return -1; | |
578 | #else | |
579 | #ifdef SIGTSTP | |
580 | ||
5a570e37 JB |
581 | { |
582 | #ifdef USG | |
583 | int pgrp = getpgrp (); | |
584 | #else | |
585 | int pgrp = getpgrp (0); | |
586 | #endif | |
587 | EMACS_KILLPG (pgrp, SIGTSTP); | |
588 | } | |
86a5659e JB |
589 | |
590 | #else /* No SIGTSTP */ | |
591 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
592 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
593 | kill (getpid (), SIGQUIT); | |
594 | ||
595 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
596 | ||
597 | /* On a system where suspending is not implemented, | |
598 | instead fork a subshell and let it talk directly to the terminal | |
599 | while we wait. */ | |
600 | int pid = fork (); | |
601 | struct save_signal saved_handlers[5]; | |
602 | ||
603 | saved_handlers[0].code = SIGINT; | |
604 | saved_handlers[1].code = SIGQUIT; | |
605 | saved_handlers[2].code = SIGTERM; | |
606 | #ifdef SIGIO | |
607 | saved_handlers[3].code = SIGIO; | |
608 | saved_handlers[4].code = 0; | |
609 | #else | |
610 | saved_handlers[3].code = 0; | |
611 | #endif | |
612 | ||
613 | if (pid == -1) | |
614 | error ("Can't spawn subshell"); | |
615 | if (pid == 0) | |
616 | { | |
617 | char *sh; | |
618 | ||
619 | sh = (char *) egetenv ("SHELL"); | |
620 | if (sh == 0) | |
621 | sh = "sh"; | |
622 | /* Use our buffer's default directory for the subshell. */ | |
623 | { | |
624 | Lisp_Object dir; | |
625 | unsigned char *str; | |
626 | int len; | |
627 | ||
628 | /* mentioning current_buffer->buffer would mean including buffer.h, | |
629 | which somehow wedges the hp compiler. So instead... */ | |
630 | ||
631 | dir = intern ("default-directory"); | |
632 | /* Can't use NULL */ | |
633 | if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil)) | |
634 | goto xyzzy; | |
635 | dir = Fsymbol_value (dir); | |
636 | if (XTYPE (dir) != Lisp_String) | |
637 | goto xyzzy; | |
638 | ||
639 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
640 | len = XSTRING (dir)->size; | |
641 | bcopy (XSTRING (dir)->data, str, len); | |
642 | if (str[len - 1] != '/') str[len++] = '/'; | |
643 | str[len] = 0; | |
644 | chdir (str); | |
645 | } | |
646 | xyzzy: | |
647 | #ifdef subprocesses | |
648 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
649 | #endif | |
1593c2fe JB |
650 | |
651 | #ifdef PRIO_PROCESS | |
652 | { | |
653 | extern int emacs_priority; | |
654 | ||
655 | if (emacs_priority) | |
656 | nice (-emacs_priority); | |
657 | } | |
658 | #endif | |
659 | ||
86a5659e JB |
660 | execlp (sh, sh, 0); |
661 | write (1, "Can't execute subshell", 22); | |
662 | _exit (1); | |
663 | } | |
664 | ||
665 | save_signal_handlers (saved_handlers); | |
ffafc793 | 666 | synch_process_alive = 1; |
86a5659e JB |
667 | wait_for_termination (pid); |
668 | restore_signal_handlers (saved_handlers); | |
669 | ||
670 | #endif /* no USG_JOBCTRL */ | |
671 | #endif /* no SIGTSTP */ | |
672 | #endif /* not VMS */ | |
673 | } | |
674 | ||
675 | save_signal_handlers (saved_handlers) | |
676 | struct save_signal *saved_handlers; | |
677 | { | |
678 | while (saved_handlers->code) | |
679 | { | |
508b171c JA |
680 | saved_handlers->handler |
681 | = (SIGTYPE (*) ()) signal (saved_handlers->code, SIG_IGN); | |
86a5659e JB |
682 | saved_handlers++; |
683 | } | |
684 | } | |
685 | ||
686 | restore_signal_handlers (saved_handlers) | |
687 | struct save_signal *saved_handlers; | |
688 | { | |
689 | while (saved_handlers->code) | |
690 | { | |
691 | signal (saved_handlers->code, saved_handlers->handler); | |
692 | saved_handlers++; | |
693 | } | |
694 | } | |
695 | \f | |
696 | #ifdef F_SETFL | |
697 | ||
698 | int old_fcntl_flags; | |
699 | ||
700 | init_sigio () | |
701 | { | |
702 | #ifdef FASYNC | |
64e971c3 | 703 | old_fcntl_flags = fcntl (input_fd, F_GETFL, 0) & ~FASYNC; |
86a5659e JB |
704 | #endif |
705 | request_sigio (); | |
706 | } | |
707 | ||
708 | reset_sigio () | |
709 | { | |
710 | unrequest_sigio (); | |
711 | } | |
712 | ||
eb8c3be9 | 713 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e JB |
714 | |
715 | request_sigio () | |
716 | { | |
717 | #ifdef SIGWINCH | |
e065a56e | 718 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 719 | #endif |
64e971c3 | 720 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
721 | |
722 | interrupts_deferred = 0; | |
723 | } | |
724 | ||
725 | unrequest_sigio () | |
726 | { | |
727 | #ifdef SIGWINCH | |
e065a56e | 728 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 729 | #endif |
64e971c3 | 730 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
731 | interrupts_deferred = 1; |
732 | } | |
733 | ||
734 | #else /* no FASYNC */ | |
735 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
736 | ||
737 | request_sigio () | |
738 | { | |
739 | int on = 1; | |
64e971c3 | 740 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
741 | interrupts_deferred = 0; |
742 | } | |
743 | ||
744 | unrequest_sigio () | |
745 | { | |
746 | int off = 0; | |
747 | ||
64e971c3 | 748 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
749 | interrupts_deferred = 1; |
750 | } | |
751 | ||
752 | #else /* not FASYNC, not STRIDE */ | |
753 | ||
754 | request_sigio () | |
755 | { | |
756 | croak ("request_sigio"); | |
757 | } | |
758 | ||
759 | unrequest_sigio () | |
760 | { | |
761 | croak ("unrequest_sigio"); | |
762 | } | |
763 | ||
764 | #endif /* STRIDE */ | |
765 | #endif /* FASYNC */ | |
766 | #endif /* F_SETFL */ | |
767 | \f | |
9ae8f997 JB |
768 | /* Saving and restoring the process group of Emacs's terminal. */ |
769 | ||
770 | #ifdef BSD | |
771 | ||
772 | /* The process group of which Emacs was a member when it initially | |
773 | started. | |
774 | ||
775 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
776 | getpid ()), then we know we're running under a shell with job | |
777 | control (Emacs would never be run as part of a pipeline). | |
778 | Everything is fine. | |
779 | ||
780 | If Emacs was not in its own process group, then we know we're | |
781 | running under a shell (or a caller) that doesn't know how to | |
782 | separate itself from Emacs (like sh). Emacs must be in its own | |
783 | process group in order to receive SIGIO correctly. In this | |
784 | situation, we put ourselves in our own pgroup, forcibly set the | |
785 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
786 | the tty's pgroup just like any other terminal setting. If | |
787 | inherited_group was not the tty's pgroup, then we'll get a | |
788 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
789 | it goes foreground in the future, which is what should happen. */ | |
790 | int inherited_pgroup; | |
791 | ||
792 | /* Split off the foreground process group to Emacs alone. | |
793 | When we are in the foreground, but not started in our own process | |
794 | group, redirect the TTY to point to our own process group. We need | |
795 | to be in our own process group to receive SIGIO properly. */ | |
796 | narrow_foreground_group () | |
797 | { | |
798 | int me = getpid (); | |
799 | ||
800 | setpgrp (0, inherited_pgroup); | |
801 | if (inherited_pgroup != me) | |
64e971c3 | 802 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
803 | setpgrp (0, me); |
804 | } | |
805 | ||
806 | /* Set the tty to our original foreground group. */ | |
807 | widen_foreground_group () | |
808 | { | |
809 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 810 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
811 | setpgrp (0, inherited_pgroup); |
812 | } | |
813 | ||
814 | #endif | |
815 | \f | |
68936329 JB |
816 | /* Getting and setting emacs_tty structures. */ |
817 | ||
818 | /* Set *TC to the parameters associated with the terminal FD. | |
819 | Return zero if all's well, or -1 if we ran into an error we | |
820 | couldn't deal with. */ | |
821 | int | |
822 | emacs_get_tty (fd, settings) | |
823 | int fd; | |
824 | struct emacs_tty *settings; | |
825 | { | |
826 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
827 | #ifdef HAVE_TCATTR | |
828 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
829 | if (tcgetattr (fd, &settings->main) < 0) | |
830 | return -1; | |
831 | ||
832 | #else | |
833 | #ifdef HAVE_TERMIO | |
834 | /* The SYSV-style interface? */ | |
835 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
836 | return -1; | |
837 | ||
838 | #else | |
839 | #ifdef VMS | |
840 | /* Vehemently Monstrous System? :-) */ | |
841 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
842 | &settings->main.class, 12, 0, 0, 0, 0) | |
843 | & 1)) | |
844 | return -1; | |
845 | ||
846 | #else | |
847 | /* I give up - I hope you have the BSD ioctls. */ | |
848 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
849 | return -1; | |
850 | ||
851 | #endif | |
852 | #endif | |
853 | #endif | |
854 | ||
855 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 856 | #ifdef HAVE_LTCHARS |
68936329 JB |
857 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
858 | return -1; | |
859 | #endif | |
860 | ||
861 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 862 | #ifdef HAVE_TCHARS |
68936329 JB |
863 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
864 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
865 | return -1; | |
866 | #endif | |
867 | ||
868 | /* We have survived the tempest. */ | |
869 | return 0; | |
870 | } | |
871 | ||
872 | ||
873 | /* Set the parameters of the tty on FD according to the contents of | |
874 | *SETTINGS. If WAITP is non-zero, we wait for all queued output to | |
875 | be written before making the change; otherwise, we forget any | |
876 | queued input and make the change immediately. | |
877 | Return 0 if all went well, and -1 if anything failed. */ | |
878 | int | |
879 | emacs_set_tty (fd, settings, waitp) | |
880 | int fd; | |
881 | struct emacs_tty *settings; | |
882 | int waitp; | |
883 | { | |
884 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
885 | #ifdef HAVE_TCATTR | |
e6cc3307 | 886 | int i; |
68936329 JB |
887 | /* We have those nifty POSIX tcmumbleattr functions. |
888 | William J. Smith <wjs@wiis.wang.com> writes: | |
889 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
890 | able to perform any of the requested actions, even if some | |
891 | of the requested actions could not be performed. | |
892 | We must read settings back to ensure tty setup properly. | |
893 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 894 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 895 | for (i = 0 ; i < 10 ; i++) |
68936329 JB |
896 | if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
897 | { | |
898 | if (errno == EINTR) | |
899 | continue; | |
900 | else | |
901 | return -1; | |
902 | } | |
903 | else | |
904 | { | |
905 | struct termios new; | |
906 | ||
907 | /* Get the current settings, and see if they're what we asked for. */ | |
908 | tcgetattr (fd, &new); | |
e6cc3307 RS |
909 | /* We cannot use memcmp on the whole structure here because under |
910 | * aix386 the termios structure has some reserved field that may | |
911 | * not be filled in. | |
912 | */ | |
913 | if ( new.c_iflag == settings->main.c_iflag | |
914 | && new.c_oflag == settings->main.c_oflag | |
915 | && new.c_cflag == settings->main.c_cflag | |
916 | && new.c_lflag == settings->main.c_lflag | |
917 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 918 | break; |
e6cc3307 RS |
919 | else |
920 | continue; | |
68936329 JB |
921 | } |
922 | ||
923 | #else | |
924 | #ifdef HAVE_TERMIO | |
925 | /* The SYSV-style interface? */ | |
926 | if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0) | |
927 | return -1; | |
928 | ||
929 | #else | |
930 | #ifdef VMS | |
931 | /* Vehemently Monstrous System? :-) */ | |
932 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
933 | &settings->main.class, 12, 0, 0, 0, 0) | |
934 | & 1)) | |
935 | return -1; | |
936 | ||
937 | #else | |
938 | /* I give up - I hope you have the BSD ioctls. */ | |
939 | if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
940 | return -1; | |
941 | ||
942 | #endif | |
943 | #endif | |
944 | #endif | |
945 | ||
946 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 947 | #ifdef HAVE_LTCHARS |
68936329 JB |
948 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
949 | return -1; | |
950 | #endif | |
951 | ||
952 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 953 | #ifdef HAVE_TCHARS |
68936329 JB |
954 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
955 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
956 | return -1; | |
957 | #endif | |
958 | ||
959 | /* We have survived the tempest. */ | |
960 | return 0; | |
961 | } | |
962 | ||
963 | \f | |
91bac16a JB |
964 | /* The initial tty mode bits */ |
965 | struct emacs_tty old_tty; | |
86a5659e JB |
966 | |
967 | int term_initted; /* 1 if outer tty status has been recorded */ | |
968 | ||
91bac16a JB |
969 | #ifdef BSD4_1 |
970 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
971 | sigio. */ | |
972 | int lmode; | |
973 | #endif | |
974 | ||
46f2fdac | 975 | #ifndef F_SETOWN_BUG |
86a5659e JB |
976 | #ifdef F_SETOWN |
977 | int old_fcntl_owner; | |
978 | #endif /* F_SETOWN */ | |
46f2fdac | 979 | #endif /* F_SETOWN_BUG */ |
86a5659e | 980 | |
86a5659e JB |
981 | /* This may also be defined in stdio, |
982 | but if so, this does no harm, | |
983 | and using the same name avoids wasting the other one's space. */ | |
984 | ||
985 | #if defined (USG) || defined (DGUX) | |
986 | unsigned char _sobuf[BUFSIZ+8]; | |
987 | #else | |
988 | char _sobuf[BUFSIZ]; | |
989 | #endif | |
990 | ||
50b8cf60 | 991 | #ifdef HAVE_LTCHARS |
86a5659e JB |
992 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
993 | #endif | |
50b8cf60 | 994 | #ifdef HAVE_TCHARS |
86a5659e JB |
995 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
996 | #endif | |
997 | ||
998 | init_sys_modes () | |
999 | { | |
91bac16a JB |
1000 | struct emacs_tty tty; |
1001 | ||
86a5659e JB |
1002 | #ifdef VMS |
1003 | #if 0 | |
1004 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1005 | extern int (*interrupt_signal) (); | |
1006 | #endif | |
1007 | #endif | |
1008 | ||
1009 | if (noninteractive) | |
1010 | return; | |
1011 | ||
1012 | #ifdef VMS | |
1013 | if (!input_ef) | |
1014 | input_ef = get_kbd_event_flag (); | |
1015 | /* LIB$GET_EF (&input_ef); */ | |
1016 | SYS$CLREF (input_ef); | |
1017 | waiting_for_ast = 0; | |
1018 | if (!timer_ef) | |
1019 | timer_ef = get_timer_event_flag (); | |
1020 | /* LIB$GET_EF (&timer_ef); */ | |
1021 | SYS$CLREF (timer_ef); | |
210b2b4f | 1022 | #if 0 |
86a5659e JB |
1023 | if (!process_ef) |
1024 | { | |
1025 | LIB$GET_EF (&process_ef); | |
1026 | SYS$CLREF (process_ef); | |
1027 | } | |
1028 | if (input_ef / 32 != process_ef / 32) | |
1029 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1030 | #endif |
86a5659e | 1031 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1032 | croak ("Input and timer event flags in different clusters."); |
1033 | #if 0 | |
86a5659e JB |
1034 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1035 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1036 | #endif |
86a5659e JB |
1037 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1038 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1039 | #ifndef VMS4_4 |
1040 | sys_access_reinit (); | |
1041 | #endif | |
86a5659e | 1042 | #endif /* not VMS */ |
91bac16a | 1043 | |
9ae8f997 JB |
1044 | #ifdef BSD |
1045 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) | |
1046 | narrow_foreground_group (); | |
1047 | #endif | |
1048 | ||
91bac16a JB |
1049 | EMACS_GET_TTY (input_fd, &old_tty); |
1050 | ||
86a5659e JB |
1051 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
1052 | { | |
91bac16a | 1053 | tty = old_tty; |
86a5659e | 1054 | |
31be8d24 | 1055 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
1056 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1057 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
86a5659e | 1058 | #ifdef ISTRIP |
91bac16a | 1059 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1060 | #endif |
91bac16a JB |
1061 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1062 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 RS |
1063 | #ifdef IEXTEN |
1064 | tty.main.c_iflag &= ~IEXTEN; /* Disable other editing characters. */ | |
1065 | #endif | |
91bac16a | 1066 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1067 | if (flow_control) |
1068 | { | |
91bac16a | 1069 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1070 | #ifdef IXANY |
91bac16a | 1071 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1072 | #endif /* IXANY */ |
1073 | } | |
1074 | else | |
91bac16a JB |
1075 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1076 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1077 | on output */ | |
1078 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1079 | #ifdef CS8 |
1080 | if (meta_key) | |
1081 | { | |
91bac16a JB |
1082 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1083 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1084 | } |
1085 | #endif | |
91bac16a | 1086 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1087 | /* Set up C-g for both SIGQUIT and SIGINT. |
1088 | We don't know which we will get, but we handle both alike | |
1089 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1090 | tty.main.c_cc[VQUIT] = quit_char; |
1091 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1092 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1093 | #ifdef VSWTCH |
e2b40c23 | 1094 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1095 | of C-z */ |
86a5659e JB |
1096 | #endif /* VSWTCH */ |
1097 | #if defined (mips) || defined (HAVE_TCATTR) | |
86a5659e | 1098 | #ifdef VSUSP |
e2b40c23 | 1099 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1100 | #endif /* VSUSP */ |
1101 | #ifdef V_DSUSP | |
e2b40c23 | 1102 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1103 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1104 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1105 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1106 | #endif /* VDSUSP */ | |
92c995de RS |
1107 | #ifdef VLNEXT |
1108 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1109 | #endif /* VLNEXT */ | |
1110 | #ifdef VREPRINT | |
1111 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1112 | #endif /* VREPRINT */ | |
1113 | #ifdef VWERASE | |
1114 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1115 | #endif /* VWERASE */ | |
1116 | #ifdef VDISCARD | |
1117 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1118 | #endif /* VDISCARD */ | |
86a5659e JB |
1119 | #endif /* mips or HAVE_TCATTR */ |
1120 | #ifdef AIX | |
1121 | #ifndef IBMR2AIX | |
1122 | /* AIX enhanced edit loses NULs, so disable it */ | |
91bac16a JB |
1123 | tty.main.c_line = 0; |
1124 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1125 | #else |
91bac16a JB |
1126 | tty.main.c_cc[VSTRT] = 255; |
1127 | tty.main.c_cc[VSTOP] = 255; | |
1128 | tty.main.c_cc[VSUSP] = 255; | |
1129 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e JB |
1130 | #endif /* IBMR2AIX */ |
1131 | /* Also, PTY overloads NUL and BREAK. | |
1132 | don't ignore break, but don't signal either, so it looks like NUL. | |
1133 | This really serves a purpose only if running in an XTERM window | |
1134 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1135 | tty.main.c_iflag &= ~IGNBRK; |
1136 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1137 | #endif |
1138 | #else /* if not HAVE_TERMIO */ | |
1139 | #ifdef VMS | |
91bac16a | 1140 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1141 | if (meta_key) |
986ffb24 | 1142 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1143 | if (flow_control) |
91bac16a | 1144 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1145 | else |
91bac16a JB |
1146 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1147 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1148 | #else /* not VMS (BSD, that is) */ |
91bac16a | 1149 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1150 | if (meta_key) |
91bac16a JB |
1151 | tty.main.sg_flags |= ANYP; |
1152 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
86a5659e JB |
1153 | #endif /* not VMS (BSD, that is) */ |
1154 | #endif /* not HAVE_TERMIO */ | |
1155 | ||
91bac16a JB |
1156 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1157 | and turn off start and stop chars, etc. If not going to use | |
1158 | CBREAK mode, do this anyway so as to turn off local flow | |
1159 | control for user coming over network on 4.2; in this case, | |
1160 | only t_stopc and t_startc really matter. */ | |
1161 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1162 | #ifdef HAVE_TCHARS |
91bac16a JB |
1163 | /* Note: if not using CBREAK mode, it makes no difference how we |
1164 | set this */ | |
1165 | tty.tchars = new_tchars; | |
1166 | tty.tchars.t_intrc = quit_char; | |
1167 | if (flow_control) | |
1168 | { | |
1169 | tty.tchars.t_startc = '\021'; | |
1170 | tty.tchars.t_stopc = '\023'; | |
1171 | } | |
1172 | ||
1173 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ | |
1174 | #ifndef LPASS8 | |
1175 | #define LPASS8 0 | |
86a5659e | 1176 | #endif |
91bac16a JB |
1177 | |
1178 | #ifdef BSD4_1 | |
1179 | #define LNOFLSH 0100000 | |
1180 | #endif | |
1181 | ||
1182 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; | |
37fd7901 JB |
1183 | #ifdef ultrix |
1184 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1185 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1186 | tty.lmode &= ~LLITOUT; | |
1187 | #endif | |
91bac16a JB |
1188 | |
1189 | #ifdef BSD4_1 | |
1190 | lmode = tty.lmode; | |
1191 | #endif | |
1192 | ||
50b8cf60 | 1193 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1194 | #endif /* not HAVE_TERMIO */ |
1195 | ||
50b8cf60 | 1196 | #ifdef HAVE_LTCHARS |
91bac16a | 1197 | tty.ltchars = new_ltchars; |
50b8cf60 | 1198 | #endif /* HAVE_LTCHARS */ |
91bac16a JB |
1199 | |
1200 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1201 | |
1202 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1203 | we have an unlocked terminal at the start. */ |
91bac16a | 1204 | |
86a5659e | 1205 | #ifdef TCXONC |
64e971c3 | 1206 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1207 | #endif |
1208 | #ifndef APOLLO | |
1209 | #ifdef TIOCSTART | |
64e971c3 | 1210 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1211 | #endif |
1212 | #endif | |
1213 | ||
1214 | #ifdef AIX | |
1215 | hft_init (); | |
1216 | #ifdef IBMR2AIX | |
1217 | { | |
1218 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1219 | to be only LF. This is the way that is done. */ | |
1220 | struct termio tty; | |
1221 | ||
1222 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1223 | write (1, "\033[20l", 5); | |
1224 | } | |
1225 | #endif | |
1226 | #endif | |
1227 | ||
86a5659e JB |
1228 | #ifdef VMS |
1229 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1230 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1231 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1232 | */ | |
1233 | queue_kbd_input (0); | |
1234 | #endif /* VMS */ | |
1235 | } | |
1236 | ||
1237 | #ifdef F_SETFL | |
46f2fdac | 1238 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1239 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
86a5659e JB |
1240 | if (interrupt_input) |
1241 | { | |
64e971c3 RS |
1242 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1243 | fcntl (input_fd, F_SETOWN, getpid ()); | |
86a5659e JB |
1244 | init_sigio (); |
1245 | } | |
1246 | #endif /* F_GETOWN */ | |
46f2fdac | 1247 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1248 | #endif /* F_SETFL */ |
1249 | ||
1250 | #ifdef BSD4_1 | |
1251 | if (interrupt_input) | |
1252 | init_sigio (); | |
1253 | #endif | |
1254 | ||
1255 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1256 | #undef _IOFBF | |
1257 | #endif | |
1258 | #ifdef _IOFBF | |
1259 | /* This symbol is defined on recent USG systems. | |
1260 | Someone says without this call USG won't really buffer the file | |
1261 | even with a call to setbuf. */ | |
1262 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1263 | #else | |
1264 | setbuf (stdout, _sobuf); | |
1265 | #endif | |
1266 | set_terminal_modes (); | |
1267 | if (term_initted && no_redraw_on_reenter) | |
1268 | { | |
1269 | if (display_completed) | |
1270 | direct_output_forward_char (0); | |
1271 | } | |
1272 | else | |
1273 | { | |
0137dbf7 JB |
1274 | frame_garbaged = 1; |
1275 | #ifdef MULTI_FRAME | |
1276 | if (FRAMEP (Vterminal_frame)) | |
1277 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e JB |
1278 | #endif |
1279 | } | |
91bac16a | 1280 | |
86a5659e JB |
1281 | term_initted = 1; |
1282 | } | |
1283 | ||
1284 | /* Return nonzero if safe to use tabs in output. | |
1285 | At the time this is called, init_sys_modes has not been done yet. */ | |
1286 | ||
1287 | tabs_safe_p () | |
1288 | { | |
91bac16a JB |
1289 | struct emacs_tty tty; |
1290 | ||
1291 | EMACS_GET_TTY (input_fd, &tty); | |
1292 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e JB |
1293 | } |
1294 | ||
1295 | /* Get terminal size from system. | |
1296 | Store number of lines into *heightp and width into *widthp. | |
1297 | If zero or a negative number is stored, the value is not valid. */ | |
1298 | ||
0137dbf7 | 1299 | get_frame_size (widthp, heightp) |
86a5659e JB |
1300 | int *widthp, *heightp; |
1301 | { | |
86a5659e | 1302 | |
86a5659e | 1303 | #ifdef TIOCGWINSZ |
91bac16a JB |
1304 | |
1305 | /* BSD-style. */ | |
86a5659e | 1306 | struct winsize size; |
91bac16a JB |
1307 | |
1308 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1309 | *widthp = *heightp = 0; | |
1310 | else | |
1311 | { | |
1312 | *widthp = size.ws_col; | |
1313 | *heightp = size.ws_row; | |
1314 | } | |
1315 | ||
1316 | #else | |
1317 | #ifdef TIOCGSIZE | |
1318 | ||
1319 | /* SunOS - style. */ | |
1320 | struct ttysize size; | |
1321 | ||
1322 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1323 | *widthp = *heightp = 0; | |
1324 | else | |
1325 | { | |
1326 | *widthp = size.ts_cols; | |
1327 | *heightp = size.ts_lines; | |
1328 | } | |
1329 | ||
1330 | #else | |
86a5659e | 1331 | #ifdef VMS |
91bac16a JB |
1332 | |
1333 | struct sensemode tty; | |
1334 | ||
1335 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1336 | &tty.class, 12, 0, 0, 0, 0); |
1337 | *widthp = tty.scr_wid; | |
1338 | *heightp = tty.scr_len; | |
91bac16a | 1339 | |
86a5659e | 1340 | #else /* system doesn't know size */ |
91bac16a | 1341 | |
86a5659e JB |
1342 | *widthp = 0; |
1343 | *heightp = 0; | |
91bac16a JB |
1344 | |
1345 | #endif /* not VMS */ | |
1346 | #endif /* not SunOS-style */ | |
1347 | #endif /* not BSD-style */ | |
86a5659e | 1348 | } |
91bac16a | 1349 | |
86a5659e | 1350 | \f |
91bac16a | 1351 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1352 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
86a5659e JB |
1353 | reset_sys_modes () |
1354 | { | |
1355 | if (noninteractive) | |
1356 | { | |
1357 | fflush (stdout); | |
1358 | return; | |
1359 | } | |
1360 | if (!term_initted) | |
1361 | return; | |
1362 | if (read_socket_hook || !EQ (Vwindow_system, Qnil)) | |
1363 | return; | |
0137dbf7 JB |
1364 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1365 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1366 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1367 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
86a5659e JB |
1368 | #ifdef IBMR2AIX |
1369 | { | |
1370 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1371 | do the LF only. Now, we need to reset it. */ | |
1372 | struct termio tty; | |
1373 | ||
1374 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1375 | write (1, "\033[20h", 5); | |
1376 | } | |
1377 | #endif | |
1378 | ||
1379 | reset_terminal_modes (); | |
1380 | fflush (stdout); | |
1381 | #ifdef BSD | |
1382 | #ifndef BSD4_1 | |
1383 | /* Avoid possible loss of output when changing terminal modes. */ | |
1384 | fsync (fileno (stdout)); | |
1385 | #endif | |
1386 | #endif | |
91bac16a | 1387 | |
86a5659e | 1388 | #ifdef F_SETFL |
46f2fdac | 1389 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1390 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1391 | if (interrupt_input) |
1392 | { | |
1393 | reset_sigio (); | |
64e971c3 | 1394 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1395 | } |
1396 | #endif /* F_SETOWN */ | |
46f2fdac | 1397 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1398 | #endif /* F_SETFL */ |
1399 | #ifdef BSD4_1 | |
1400 | if (interrupt_input) | |
1401 | reset_sigio (); | |
1402 | #endif /* BSD4_1 */ | |
91bac16a | 1403 | |
1334b321 | 1404 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) |
91bac16a | 1405 | ; |
86a5659e JB |
1406 | |
1407 | #ifdef AIX | |
1408 | hft_reset (); | |
1409 | #endif | |
9ae8f997 JB |
1410 | |
1411 | #ifdef BSD | |
1412 | widen_foreground_group (); | |
1413 | #endif | |
86a5659e JB |
1414 | } |
1415 | \f | |
1416 | #ifdef HAVE_PTYS | |
1417 | ||
1418 | /* Set up the proper status flags for use of a pty. */ | |
1419 | ||
1420 | setup_pty (fd) | |
1421 | int fd; | |
1422 | { | |
1423 | /* I'm told that TOICREMOTE does not mean control chars | |
1424 | "can't be sent" but rather that they don't have | |
1425 | input-editing or signaling effects. | |
1426 | That should be good, because we have other ways | |
1427 | to do those things in Emacs. | |
1428 | However, telnet mode seems not to work on 4.2. | |
1429 | So TIOCREMOTE is turned off now. */ | |
1430 | ||
1431 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1432 | will hang. In particular, the "timeout" feature (which | |
1433 | causes a read to return if there is no data available) | |
1434 | does this. Also it is known that telnet mode will hang | |
1435 | in such a way that Emacs must be stopped (perhaps this | |
1436 | is the same problem). | |
1437 | ||
1438 | If TIOCREMOTE is turned off, then there is a bug in | |
1439 | hp-ux which sometimes loses data. Apparently the | |
1440 | code which blocks the master process when the internal | |
1441 | buffer fills up does not work. Other than this, | |
1442 | though, everything else seems to work fine. | |
1443 | ||
1444 | Since the latter lossage is more benign, we may as well | |
1445 | lose that way. -- cph */ | |
1446 | #ifdef FIONBIO | |
1447 | #ifdef SYSV_PTYS | |
1448 | { | |
1449 | int on = 1; | |
1450 | ioctl (fd, FIONBIO, &on); | |
1451 | } | |
1452 | #endif | |
1453 | #endif | |
1454 | #ifdef IBMRTAIX | |
1455 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1456 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1457 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1458 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1459 | /* change this behavior, but I'm not going to hold my breath. */ | |
1460 | signal (SIGHUP, SIG_IGN); | |
1461 | #endif | |
1462 | } | |
1463 | #endif /* HAVE_PTYS */ | |
1464 | \f | |
1465 | #ifdef VMS | |
1466 | ||
1467 | /* Assigning an input channel is done at the start of Emacs execution. | |
1468 | This is called each time Emacs is resumed, also, but does nothing | |
1469 | because input_chain is no longer zero. */ | |
1470 | ||
1471 | init_vms_input () | |
1472 | { | |
1473 | int status; | |
1474 | ||
91bac16a | 1475 | if (input_fd == 0) |
86a5659e | 1476 | { |
91bac16a | 1477 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1478 | if (! (status & 1)) |
1479 | LIB$STOP (status); | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | /* Deassigning the input channel is done before exiting. */ | |
1484 | ||
1485 | stop_vms_input () | |
1486 | { | |
91bac16a | 1487 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1488 | } |
1489 | ||
1490 | short input_buffer; | |
1491 | ||
1492 | /* Request reading one character into the keyboard buffer. | |
1493 | This is done as soon as the buffer becomes empty. */ | |
1494 | ||
1495 | queue_kbd_input () | |
1496 | { | |
1497 | int status; | |
210b2b4f JB |
1498 | extern kbd_input_ast (); |
1499 | ||
86a5659e JB |
1500 | waiting_for_ast = 0; |
1501 | stop_input = 0; | |
91bac16a | 1502 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1503 | &input_iosb, kbd_input_ast, 1, |
1504 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1505 | } | |
1506 | ||
1507 | int input_count; | |
1508 | ||
1509 | /* Ast routine that is called when keyboard input comes in | |
1510 | in accord with the SYS$QIO above. */ | |
1511 | ||
1512 | kbd_input_ast () | |
1513 | { | |
1514 | register int c = -1; | |
1515 | int old_errno = errno; | |
ffd56f97 | 1516 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1517 | |
1518 | if (waiting_for_ast) | |
1519 | SYS$SETEF (input_ef); | |
1520 | waiting_for_ast = 0; | |
1521 | input_count++; | |
1522 | #ifdef ASTDEBUG | |
1523 | if (input_count == 25) | |
1524 | exit (1); | |
1525 | printf ("Ast # %d,", input_count); | |
1526 | printf (" iosb = %x, %x, %x, %x", | |
1527 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1528 | input_iosb.term); | |
1529 | #endif | |
1530 | if (input_iosb.offset) | |
1531 | { | |
1532 | c = input_buffer; | |
1533 | #ifdef ASTDEBUG | |
1534 | printf (", char = 0%o", c); | |
1535 | #endif | |
1536 | } | |
1537 | #ifdef ASTDEBUG | |
1538 | printf ("\n"); | |
1539 | fflush (stdout); | |
1540 | sleep (1); | |
1541 | #endif | |
1542 | if (! stop_input) | |
1543 | queue_kbd_input (); | |
1544 | if (c >= 0) | |
1545 | { | |
1546 | struct input_event e; | |
1547 | e.kind = ascii_keystroke; | |
210b2b4f JB |
1548 | XSET (e.code, Lisp_Int, c); |
1549 | #ifdef MULTI_FRAME | |
1550 | XSET(e.frame_or_window, Lisp_Frame, selected_frame); | |
1551 | #else | |
1552 | e.frame_or_window = Qnil; | |
1553 | #endif | |
86a5659e JB |
1554 | kbd_buffer_store_event (&e); |
1555 | } | |
ffd56f97 JB |
1556 | if (input_available_clear_time) |
1557 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1558 | errno = old_errno; |
1559 | } | |
1560 | ||
1561 | /* Wait until there is something in kbd_buffer. */ | |
1562 | ||
1563 | wait_for_kbd_input () | |
1564 | { | |
1565 | extern int have_process_input, process_exited; | |
1566 | ||
1567 | /* If already something, avoid doing system calls. */ | |
1568 | if (detect_input_pending ()) | |
1569 | { | |
1570 | return; | |
1571 | } | |
1572 | /* Clear a flag, and tell ast routine above to set it. */ | |
1573 | SYS$CLREF (input_ef); | |
1574 | waiting_for_ast = 1; | |
1575 | /* Check for timing error: ast happened while we were doing that. */ | |
1576 | if (!detect_input_pending ()) | |
1577 | { | |
1578 | /* No timing error: wait for flag to be set. */ | |
1579 | set_waiting_for_input (0); | |
1580 | SYS$WFLOR (input_ef, input_eflist); | |
1581 | clear_waiting_for_input (0); | |
1582 | if (!detect_input_pending ()) | |
1583 | /* Check for subprocess input availability */ | |
1584 | { | |
1585 | int dsp = have_process_input || process_exited; | |
1586 | ||
1587 | SYS$CLREF (process_ef); | |
1588 | if (have_process_input) | |
1589 | process_command_input (); | |
1590 | if (process_exited) | |
1591 | process_exit (); | |
1592 | if (dsp) | |
1593 | { | |
1594 | update_mode_lines++; | |
1595 | redisplay_preserve_echo_area (); | |
1596 | } | |
1597 | } | |
1598 | } | |
1599 | waiting_for_ast = 0; | |
1600 | } | |
1601 | ||
1602 | /* Get rid of any pending QIO, when we are about to suspend | |
1603 | or when we want to throw away pending input. | |
1604 | We wait for a positive sign that the AST routine has run | |
1605 | and therefore there is no I/O request queued when we return. | |
1606 | SYS$SETAST is used to avoid a timing error. */ | |
1607 | ||
1608 | end_kbd_input () | |
1609 | { | |
1610 | #ifdef ASTDEBUG | |
1611 | printf ("At end_kbd_input.\n"); | |
1612 | fflush (stdout); | |
1613 | sleep (1); | |
1614 | #endif | |
1615 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
1616 | { | |
91bac16a | 1617 | SYS$CANCEL (input_fd); |
86a5659e JB |
1618 | return; |
1619 | } | |
1620 | ||
1621 | SYS$SETAST (0); | |
1622 | /* Clear a flag, and tell ast routine above to set it. */ | |
1623 | SYS$CLREF (input_ef); | |
1624 | waiting_for_ast = 1; | |
1625 | stop_input = 1; | |
91bac16a | 1626 | SYS$CANCEL (input_fd); |
86a5659e JB |
1627 | SYS$SETAST (1); |
1628 | SYS$WAITFR (input_ef); | |
1629 | waiting_for_ast = 0; | |
1630 | } | |
1631 | ||
1632 | /* Wait for either input available or time interval expiry. */ | |
1633 | ||
1634 | input_wait_timeout (timeval) | |
1635 | int timeval; /* Time to wait, in seconds */ | |
1636 | { | |
1637 | int time [2]; | |
1638 | static int zero = 0; | |
1639 | static int large = -10000000; | |
1640 | ||
1641 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1642 | ||
1643 | /* If already something, avoid doing system calls. */ | |
1644 | if (detect_input_pending ()) | |
1645 | { | |
1646 | return; | |
1647 | } | |
1648 | /* Clear a flag, and tell ast routine above to set it. */ | |
1649 | SYS$CLREF (input_ef); | |
1650 | waiting_for_ast = 1; | |
1651 | /* Check for timing error: ast happened while we were doing that. */ | |
1652 | if (!detect_input_pending ()) | |
1653 | { | |
1654 | /* No timing error: wait for flag to be set. */ | |
1655 | SYS$CANTIM (1, 0); | |
1656 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1657 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
1658 | } | |
1659 | waiting_for_ast = 0; | |
1660 | } | |
1661 | ||
1662 | /* The standard `sleep' routine works some other way | |
1663 | and it stops working if you have ever quit out of it. | |
1664 | This one continues to work. */ | |
1665 | ||
1666 | sys_sleep (timeval) | |
1667 | int timeval; | |
1668 | { | |
1669 | int time [2]; | |
1670 | static int zero = 0; | |
1671 | static int large = -10000000; | |
1672 | ||
1673 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1674 | ||
1675 | SYS$CANTIM (1, 0); | |
1676 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1677 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
1678 | } | |
1679 | ||
1680 | init_sigio () | |
1681 | { | |
1682 | request_sigio (); | |
1683 | } | |
1684 | ||
1685 | reset_sigio () | |
1686 | { | |
1687 | unrequest_sigio (); | |
1688 | } | |
1689 | ||
1690 | request_sigio () | |
1691 | { | |
1692 | croak ("request sigio"); | |
1693 | } | |
1694 | ||
1695 | unrequest_sigio () | |
1696 | { | |
1697 | croak ("unrequest sigio"); | |
1698 | } | |
1699 | ||
1700 | #endif /* VMS */ | |
1701 | \f | |
1702 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
1703 | #ifndef CANNOT_DUMP | |
1704 | #define NEED_STARTS | |
1705 | #endif | |
1706 | ||
1707 | #ifndef SYSTEM_MALLOC | |
1708 | #ifndef NEED_STARTS | |
1709 | #define NEED_STARTS | |
1710 | #endif | |
1711 | #endif | |
1712 | ||
1713 | #ifdef NEED_STARTS | |
1714 | /* Some systems that cannot dump also cannot implement these. */ | |
1715 | ||
1716 | /* | |
1717 | * Return the address of the start of the text segment prior to | |
1718 | * doing an unexec. After unexec the return value is undefined. | |
1719 | * See crt0.c for further explanation and _start. | |
1720 | * | |
1721 | */ | |
1722 | ||
1723 | #ifndef CANNOT_UNEXEC | |
1724 | char * | |
1725 | start_of_text () | |
1726 | { | |
1727 | #ifdef TEXT_START | |
1728 | return ((char *) TEXT_START); | |
1729 | #else | |
1730 | #ifdef GOULD | |
1731 | extern csrt (); | |
1732 | return ((char *) csrt); | |
1733 | #else /* not GOULD */ | |
1734 | extern int _start (); | |
1735 | return ((char *) _start); | |
1736 | #endif /* GOULD */ | |
1737 | #endif /* TEXT_START */ | |
1738 | } | |
1739 | #endif /* not CANNOT_UNEXEC */ | |
1740 | ||
1741 | /* | |
1742 | * Return the address of the start of the data segment prior to | |
1743 | * doing an unexec. After unexec the return value is undefined. | |
1744 | * See crt0.c for further information and definition of data_start. | |
1745 | * | |
1746 | * Apparently, on BSD systems this is etext at startup. On | |
1747 | * USG systems (swapping) this is highly mmu dependent and | |
1748 | * is also dependent on whether or not the program is running | |
1749 | * with shared text. Generally there is a (possibly large) | |
1750 | * gap between end of text and start of data with shared text. | |
1751 | * | |
1752 | * On Uniplus+ systems with shared text, data starts at a | |
1753 | * fixed address. Each port (from a given oem) is generally | |
1754 | * different, and the specific value of the start of data can | |
1755 | * be obtained via the UniPlus+ specific "uvar" system call, | |
1756 | * however the method outlined in crt0.c seems to be more portable. | |
1757 | * | |
1758 | * Probably what will have to happen when a USG unexec is available, | |
1759 | * at least on UniPlus, is temacs will have to be made unshared so | |
1760 | * that text and data are contiguous. Then once loadup is complete, | |
1761 | * unexec will produce a shared executable where the data can be | |
1762 | * at the normal shared text boundry and the startofdata variable | |
1763 | * will be patched by unexec to the correct value. | |
1764 | * | |
1765 | */ | |
1766 | ||
1767 | char * | |
1768 | start_of_data () | |
1769 | { | |
1770 | #ifdef DATA_START | |
1771 | return ((char *) DATA_START); | |
6c65530f JB |
1772 | #else |
1773 | #ifdef ORDINARY_LINK | |
1774 | /* | |
1775 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
1776 | * data_start isn't defined. We take the address of environ, which | |
1777 | * is known to live at or near the start of the system crt0.c, and | |
1778 | * we don't sweat the handful of bytes that might lose. | |
1779 | */ | |
1780 | extern char **environ; | |
1781 | ||
1782 | return((char *) &environ); | |
86a5659e JB |
1783 | #else |
1784 | extern int data_start; | |
1785 | return ((char *) &data_start); | |
6c65530f JB |
1786 | #endif /* ORDINARY_LINK */ |
1787 | #endif /* DATA_START */ | |
86a5659e JB |
1788 | } |
1789 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
1790 | ||
1791 | #ifndef CANNOT_DUMP | |
1792 | /* Some systems that cannot dump also cannot implement these. */ | |
1793 | ||
1794 | /* | |
1795 | * Return the address of the end of the text segment prior to | |
1796 | * doing an unexec. After unexec the return value is undefined. | |
1797 | */ | |
1798 | ||
1799 | char * | |
1800 | end_of_text () | |
1801 | { | |
1802 | #ifdef TEXT_END | |
1803 | return ((char *) TEXT_END); | |
1804 | #else | |
1805 | extern int etext; | |
1806 | return ((char *) &etext); | |
1807 | #endif | |
1808 | } | |
1809 | ||
1810 | /* | |
1811 | * Return the address of the end of the data segment prior to | |
1812 | * doing an unexec. After unexec the return value is undefined. | |
1813 | */ | |
1814 | ||
1815 | char * | |
1816 | end_of_data () | |
1817 | { | |
1818 | #ifdef DATA_END | |
1819 | return ((char *) DATA_END); | |
1820 | #else | |
1821 | extern int edata; | |
1822 | return ((char *) &edata); | |
1823 | #endif | |
1824 | } | |
1825 | ||
1826 | #endif /* not CANNOT_DUMP */ | |
1827 | \f | |
1828 | /* Get_system_name returns as its value | |
1829 | a string for the Lisp function system-name to return. */ | |
1830 | ||
1831 | #ifdef BSD4_1 | |
1832 | #include <whoami.h> | |
1833 | #endif | |
1834 | ||
e36ba278 RS |
1835 | /* Can't have this within the function since `static' is #defined to |
1836 | nothing for some USG systems. */ | |
86a5659e | 1837 | #ifdef USG |
e36ba278 RS |
1838 | #ifdef HAVE_GETHOSTNAME |
1839 | static char get_system_name_name[256]; | |
1840 | #else /* not HAVE_GETHOSTNAME */ | |
86a5659e | 1841 | static struct utsname get_system_name_name; |
e36ba278 RS |
1842 | #endif /* not HAVE_GETHOSTNAME */ |
1843 | #endif /* USG */ | |
86a5659e | 1844 | |
f8a80313 RS |
1845 | #ifndef BSD4_1 |
1846 | #ifndef USG | |
1847 | #ifndef VMS | |
1848 | #ifdef HAVE_SOCKETS | |
1849 | #include <sys/socket.h> | |
1850 | #include <netdb.h> | |
1851 | #endif /* HAVE_SOCKETS */ | |
1852 | #endif /* not VMS */ | |
1853 | #endif /* not USG */ | |
1854 | #endif /* not BSD4_1 */ | |
1855 | ||
86a5659e JB |
1856 | char * |
1857 | get_system_name () | |
1858 | { | |
1859 | #ifdef USG | |
e36ba278 RS |
1860 | #ifdef HAVE_GETHOSTNAME |
1861 | gethostname (get_system_name_name, sizeof (get_system_name_name)); | |
1862 | return get_system_name_name; | |
1863 | #else /* not HAVE_GETHOSTNAME */ | |
86a5659e JB |
1864 | uname (&get_system_name_name); |
1865 | return (get_system_name_name.nodename); | |
e36ba278 | 1866 | #endif /* not HAVE_GETHOSTNAME */ |
86a5659e JB |
1867 | #else /* Not USG */ |
1868 | #ifdef BSD4_1 | |
1869 | return sysname; | |
1870 | #else /* not USG, not 4.1 */ | |
1871 | static char system_name_saved[32]; | |
1872 | #ifdef VMS | |
1873 | char *sp; | |
1874 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
1875 | sp = "vax-vms"; | |
1876 | else | |
1877 | { | |
1878 | char *end; | |
1879 | ||
1880 | if ((end = index (sp, ':')) != 0) | |
1881 | *end = '\0'; | |
1882 | } | |
1883 | strcpy (system_name_saved, sp); | |
1884 | #else /* not VMS */ | |
1885 | gethostname (system_name_saved, sizeof (system_name_saved)); | |
f8a80313 RS |
1886 | #ifdef HAVE_SOCKETS |
1887 | /* Turn the hostname into the official, fully-qualified hostname. | |
1888 | Don't do this if we're going to dump; this can confuse system | |
1889 | libraries on some machines and make the dumped emacs core dump. */ | |
1890 | #ifndef CANNOT_DUMP | |
1891 | if (initialized) | |
1892 | #endif /* not CANNOT_DUMP */ | |
1893 | { | |
1894 | struct hostent *hp; | |
1895 | hp = gethostbyname (system_name_saved); | |
1896 | if (hp && strlen (hp->h_name) < sizeof(system_name_saved)) | |
1897 | strcpy (system_name_saved, hp->h_name); | |
1898 | } | |
1899 | #endif /* HAVE_SOCKETS */ | |
86a5659e JB |
1900 | #endif /* not VMS */ |
1901 | return system_name_saved; | |
1902 | #endif /* not USG, not 4.1 */ | |
1903 | #endif /* not USG */ | |
1904 | } | |
210b2b4f JB |
1905 | |
1906 | #ifdef VMS | |
1907 | #ifndef HAVE_GETHOSTNAME | |
1908 | void gethostname(buf, len) | |
1909 | char *buf; | |
1910 | int len; | |
1911 | { | |
1912 | char *s; | |
1913 | s = getenv ("SYS$NODE"); | |
1914 | if (s == NULL) | |
1915 | buf[0] = '\0'; | |
1916 | else { | |
1917 | strncpy (buf, s, len - 2); | |
1918 | buf[len - 1] = '\0'; | |
1919 | } /* else */ | |
1920 | } /* static void gethostname */ | |
1921 | #endif /* ! HAVE_GETHOSTNAME */ | |
1922 | #endif /* VMS */ | |
1923 | ||
86a5659e JB |
1924 | \f |
1925 | #ifndef VMS | |
1926 | #ifndef HAVE_SELECT | |
1927 | ||
1928 | #ifdef HAVE_X_WINDOWS | |
1929 | /* Cause explanatory error message at compile time, | |
1930 | since the select emulation is not good enough for X. */ | |
1931 | int *x = &x_windows_lose_if_no_select_system_call; | |
1932 | #endif | |
1933 | ||
1934 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
1935 | * Only checks read descriptors. | |
1936 | */ | |
1937 | /* How long to wait between checking fds in select */ | |
1938 | #define SELECT_PAUSE 1 | |
1939 | int select_alarmed; | |
1940 | ||
1941 | /* For longjmp'ing back to read_input_waiting. */ | |
1942 | ||
1943 | jmp_buf read_alarm_throw; | |
1944 | ||
1945 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
1946 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
1947 | ||
1948 | int read_alarm_should_throw; | |
1949 | ||
1950 | SIGTYPE | |
1951 | select_alarm () | |
1952 | { | |
1953 | select_alarmed = 1; | |
1954 | #ifdef BSD4_1 | |
1955 | sigrelse (SIGALRM); | |
1956 | #else /* not BSD4_1 */ | |
1957 | signal (SIGALRM, SIG_IGN); | |
1958 | #endif /* not BSD4_1 */ | |
1959 | if (read_alarm_should_throw) | |
1960 | longjmp (read_alarm_throw, 1); | |
1961 | } | |
1962 | ||
1963 | /* Only rfds are checked. */ | |
1964 | int | |
1965 | select (nfds, rfds, wfds, efds, timeout) | |
1966 | int nfds; | |
1967 | int *rfds, *wfds, *efds, *timeout; | |
1968 | { | |
1969 | int ravail = 0, orfds = 0, old_alarm; | |
1970 | int timeoutval = timeout ? *timeout : 100000; | |
1971 | int *local_timeout = &timeoutval; | |
1972 | extern int proc_buffered_char[]; | |
1973 | #ifndef subprocesses | |
1974 | int process_tick = 0, update_tick = 0; | |
1975 | #else | |
1976 | extern int process_tick, update_tick; | |
1977 | #endif | |
1978 | SIGTYPE (*old_trap) (); | |
1979 | unsigned char buf; | |
1980 | ||
1981 | if (rfds) | |
1982 | { | |
1983 | orfds = *rfds; | |
1984 | *rfds = 0; | |
1985 | } | |
1986 | if (wfds) | |
1987 | *wfds = 0; | |
1988 | if (efds) | |
1989 | *efds = 0; | |
1990 | ||
1991 | /* If we are looking only for the terminal, with no timeout, | |
1992 | just read it and wait -- that's more efficient. */ | |
1993 | if (orfds == 1 && *local_timeout == 100000 && process_tick == update_tick) | |
1994 | { | |
1995 | if (! detect_input_pending ()) | |
1996 | read_input_waiting (); | |
1997 | *rfds = 1; | |
1998 | return 1; | |
1999 | } | |
2000 | ||
2001 | /* Once a second, till the timer expires, check all the flagged read | |
2002 | * descriptors to see if any input is available. If there is some then | |
2003 | * set the corresponding bit in the return copy of rfds. | |
2004 | */ | |
2005 | while (1) | |
2006 | { | |
2007 | register int to_check, bit, fd; | |
2008 | ||
2009 | if (rfds) | |
2010 | { | |
2011 | for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++) | |
2012 | { | |
2013 | if (orfds & bit) | |
2014 | { | |
2015 | int avail = 0, status = 0; | |
2016 | ||
2017 | if (bit == 1) | |
2018 | avail = detect_input_pending (); /* Special keyboard handler */ | |
2019 | else | |
2020 | { | |
2021 | #ifdef FIONREAD | |
2022 | status = ioctl (fd, FIONREAD, &avail); | |
2023 | #else /* no FIONREAD */ | |
2024 | /* Hoping it will return -1 if nothing available | |
2025 | or 0 if all 0 chars requested are read. */ | |
2026 | if (proc_buffered_char[fd] >= 0) | |
2027 | avail = 1; | |
2028 | else | |
2029 | { | |
2030 | avail = read (fd, &buf, 1); | |
2031 | if (avail > 0) | |
2032 | proc_buffered_char[fd] = buf; | |
2033 | } | |
2034 | #endif /* no FIONREAD */ | |
2035 | } | |
2036 | if (status >= 0 && avail > 0) | |
2037 | { | |
2038 | (*rfds) |= bit; | |
2039 | ravail++; | |
2040 | } | |
2041 | } | |
2042 | } | |
2043 | } | |
2044 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2045 | break; | |
2046 | old_alarm = alarm (0); | |
34567704 | 2047 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2048 | select_alarmed = 0; |
2049 | alarm (SELECT_PAUSE); | |
2050 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2051 | while (select_alarmed == 0 && *local_timeout != 0 | |
2052 | && process_tick == update_tick) | |
2053 | { | |
2054 | /* If we are interested in terminal input, | |
2055 | wait by reading the terminal. | |
2056 | That makes instant wakeup for terminal input at least. */ | |
2057 | if (orfds & 1) | |
2058 | { | |
2059 | read_input_waiting (); | |
2060 | if (detect_input_pending ()) | |
2061 | select_alarmed = 1; | |
2062 | } | |
2063 | else | |
2064 | pause (); | |
2065 | } | |
2066 | (*local_timeout) -= SELECT_PAUSE; | |
2067 | /* Reset the old alarm if there was one */ | |
2068 | alarm (0); | |
2069 | signal (SIGALRM, old_trap); | |
2070 | if (old_alarm != 0) | |
2071 | { | |
2072 | /* Reset or forge an interrupt for the original handler. */ | |
2073 | old_alarm -= SELECT_PAUSE; | |
2074 | if (old_alarm <= 0) | |
2075 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2076 | else | |
2077 | alarm (old_alarm); | |
2078 | } | |
2079 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2080 | break; | |
2081 | } | |
2082 | return ravail; | |
2083 | } | |
2084 | ||
2085 | /* Read keyboard input into the standard buffer, | |
2086 | waiting for at least one character. */ | |
2087 | ||
2088 | /* Make all keyboard buffers much bigger when using X windows. */ | |
2089 | #ifdef HAVE_X_WINDOWS | |
2090 | #define BUFFER_SIZE_FACTOR 16 | |
2091 | #else | |
2092 | #define BUFFER_SIZE_FACTOR 1 | |
2093 | #endif | |
2094 | ||
2095 | read_input_waiting () | |
2096 | { | |
2097 | char buf[256 * BUFFER_SIZE_FACTOR]; | |
2098 | struct input_event e; | |
34567704 JB |
2099 | int nread, i; |
2100 | extern int quit_char; | |
86a5659e JB |
2101 | |
2102 | if (read_socket_hook) | |
2103 | { | |
2104 | read_alarm_should_throw = 0; | |
2105 | if (! setjmp (read_alarm_throw)) | |
2106 | nread = (*read_socket_hook) (0, buf, 256 * BUFFER_SIZE_FACTOR, 1, 0); | |
2107 | else | |
2108 | nread = -1; | |
2109 | } | |
2110 | else | |
2111 | nread = read (fileno (stdin), buf, 1); | |
2112 | ||
2113 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2114 | e.kind = ascii_keystroke; | |
6c65530f | 2115 | e.frame_or_window = selected_frame; |
57ef1664 | 2116 | e.modifiers = 0; |
86a5659e JB |
2117 | for (i = 0; i < nread; i++) |
2118 | { | |
2119 | XSET (e.code, Lisp_Int, buf[i]); | |
2120 | kbd_buffer_store_event (&e); | |
2121 | /* Don't look at input that follows a C-g too closely. | |
2122 | This reduces lossage due to autorepeat on C-g. */ | |
34567704 | 2123 | if (buf[i] == quit_char) |
86a5659e JB |
2124 | break; |
2125 | } | |
2126 | } | |
2127 | ||
2128 | #endif /* not HAVE_SELECT */ | |
2129 | #endif /* not VMS */ | |
2130 | \f | |
2131 | #ifdef BSD4_1 | |
86a5659e JB |
2132 | /* |
2133 | * Partially emulate 4.2 open call. | |
2134 | * open is defined as this in 4.1. | |
2135 | * | |
2136 | * - added by Michael Bloom @ Citicorp/TTI | |
2137 | * | |
2138 | */ | |
2139 | ||
2140 | int | |
2141 | sys_open (path, oflag, mode) | |
2142 | char *path; | |
2143 | int oflag, mode; | |
2144 | { | |
2145 | if (oflag & O_CREAT) | |
2146 | return creat (path, mode); | |
2147 | else | |
2148 | return open (path, oflag); | |
2149 | } | |
2150 | ||
2151 | init_sigio () | |
2152 | { | |
2153 | if (noninteractive) | |
2154 | return; | |
2155 | lmode = LINTRUP | lmode; | |
2156 | ioctl (0, TIOCLSET, &lmode); | |
2157 | } | |
2158 | ||
2159 | reset_sigio () | |
2160 | { | |
2161 | if (noninteractive) | |
2162 | return; | |
2163 | lmode = ~LINTRUP & lmode; | |
2164 | ioctl (0, TIOCLSET, &lmode); | |
2165 | } | |
2166 | ||
2167 | request_sigio () | |
2168 | { | |
2169 | sigrelse (SIGTINT); | |
2170 | ||
2171 | interrupts_deferred = 0; | |
2172 | } | |
2173 | ||
2174 | unrequest_sigio () | |
2175 | { | |
2176 | sighold (SIGTINT); | |
2177 | ||
2178 | interrupts_deferred = 1; | |
2179 | } | |
2180 | ||
2181 | /* still inside #ifdef BSD4_1 */ | |
2182 | #ifdef subprocesses | |
2183 | ||
2184 | int sigheld; /* Mask of held signals */ | |
2185 | ||
2186 | sigholdx (signum) | |
2187 | int signum; | |
2188 | { | |
2189 | sigheld |= sigbit (signum); | |
2190 | sighold (signum); | |
2191 | } | |
2192 | ||
2193 | sigisheld (signum) | |
2194 | int signum; | |
2195 | { | |
2196 | sigheld |= sigbit (signum); | |
2197 | } | |
2198 | ||
2199 | sigunhold (signum) | |
2200 | int signum; | |
2201 | { | |
2202 | sigheld &= ~sigbit (signum); | |
2203 | sigrelse (signum); | |
2204 | } | |
2205 | ||
2206 | sigfree () /* Free all held signals */ | |
2207 | { | |
2208 | int i; | |
2209 | for (i = 0; i < NSIG; i++) | |
2210 | if (sigheld & sigbit (i)) | |
2211 | sigrelse (i); | |
2212 | sigheld = 0; | |
2213 | } | |
2214 | ||
2215 | sigbit (i) | |
2216 | { | |
2217 | return 1 << (i - 1); | |
2218 | } | |
2219 | #endif /* subprocesses */ | |
2220 | #endif /* BSD4_1 */ | |
2221 | \f | |
2222 | /* POSIX signals support - DJB */ | |
2223 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2224 | ||
2225 | #ifdef POSIX_SIGNALS | |
2226 | ||
2227 | sigset_t old_mask, empty_mask, full_mask, temp_mask; | |
2228 | static struct sigaction new_action, old_action; | |
2229 | ||
2230 | init_signals () | |
2231 | { | |
00eaaa32 JB |
2232 | sigemptyset (&empty_mask); |
2233 | sigfillset (&full_mask); | |
86a5659e JB |
2234 | } |
2235 | ||
86a5659e JB |
2236 | signal_handler_t |
2237 | sys_signal (int signal_number, signal_handler_t action) | |
2238 | { | |
2239 | #ifdef DGUX | |
2240 | /* This gets us restartable system calls for efficiency. | |
2241 | The "else" code will works as well. */ | |
2242 | return (berk_signal (signal_number, action)); | |
2243 | #else | |
2244 | sigemptyset (&new_action.sa_mask); | |
2245 | new_action.sa_handler = action; | |
4a785b6e | 2246 | new_action.sa_flags = 0; |
d32b2f3c | 2247 | sigaction (signal_number, &new_action, &old_action); |
86a5659e JB |
2248 | return (old_action.sa_handler); |
2249 | #endif /* DGUX */ | |
2250 | } | |
2251 | ||
e065a56e JB |
2252 | #ifndef __GNUC__ |
2253 | /* If we're compiling with GCC, we don't need this function, since it | |
2254 | can be written as a macro. */ | |
2255 | sigset_t | |
2256 | sys_sigmask (int sig) | |
2257 | { | |
2258 | sigset_t mask; | |
2259 | sigemptyset (&mask); | |
2260 | sigaddset (&mask, sig); | |
2261 | return mask; | |
2262 | } | |
2263 | #endif | |
2264 | ||
86a5659e JB |
2265 | int |
2266 | sys_sigpause (sigset_t new_mask) | |
2267 | { | |
2268 | /* pause emulating berk sigpause... */ | |
2269 | sigsuspend (&new_mask); | |
2270 | return (EINTR); | |
2271 | } | |
2272 | ||
2273 | /* I'd like to have these guys return pointers to the mask storage in here, | |
2274 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2275 | safe and pass the structure. It normally won't be more than 2 bytes | |
2276 | anyhow. - DJB */ | |
2277 | ||
2278 | sigset_t | |
2279 | sys_sigblock (sigset_t new_mask) | |
2280 | { | |
2281 | sigset_t old_mask; | |
2282 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2283 | return (old_mask); | |
2284 | } | |
2285 | ||
2286 | sigset_t | |
2287 | sys_sigunblock (sigset_t new_mask) | |
2288 | { | |
2289 | sigset_t old_mask; | |
2290 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2291 | return (old_mask); | |
2292 | } | |
2293 | ||
2294 | sigset_t | |
2295 | sys_sigsetmask (sigset_t new_mask) | |
2296 | { | |
2297 | sigset_t old_mask; | |
2298 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2299 | return (old_mask); | |
2300 | } | |
2301 | ||
2302 | #endif /* POSIX_SIGNALS */ | |
2303 | \f | |
2304 | #ifndef BSTRING | |
2305 | ||
2306 | void | |
2307 | bzero (b, length) | |
2308 | register char *b; | |
2309 | register int length; | |
2310 | { | |
2311 | #ifdef VMS | |
2312 | short zero = 0; | |
2313 | long max_str = 65535; | |
2314 | ||
2315 | while (length > max_str) { | |
2316 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2317 | length -= max_str; | |
2318 | b += max_str; | |
2319 | } | |
2320 | max_str = length; | |
2321 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2322 | #else | |
2323 | while (length-- > 0) | |
2324 | *b++ = 0; | |
2325 | #endif /* not VMS */ | |
2326 | } | |
2327 | ||
2328 | /* Saying `void' requires a declaration, above, where bcopy is used | |
2329 | and that declaration causes pain for systems where bcopy is a macro. */ | |
2330 | bcopy (b1, b2, length) | |
2331 | register char *b1; | |
2332 | register char *b2; | |
2333 | register int length; | |
2334 | { | |
2335 | #ifdef VMS | |
2336 | long max_str = 65535; | |
2337 | ||
2338 | while (length > max_str) { | |
2339 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
2340 | length -= max_str; | |
2341 | b1 += max_str; | |
2342 | b2 += max_str; | |
2343 | } | |
2344 | max_str = length; | |
2345 | (void) LIB$MOVC3 (&length, b1, b2); | |
2346 | #else | |
2347 | while (length-- > 0) | |
2348 | *b2++ = *b1++; | |
2349 | #endif /* not VMS */ | |
2350 | } | |
2351 | ||
2352 | int | |
2353 | bcmp (b1, b2, length) /* This could be a macro! */ | |
2354 | register char *b1; | |
2355 | register char *b2; | |
2356 | register int length; | |
2357 | { | |
2358 | #ifdef VMS | |
2359 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
2360 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
2361 | ||
2362 | return STR$COMPARE (&src1, &src2); | |
2363 | #else | |
2364 | while (length-- > 0) | |
2365 | if (*b1++ != *b2++) | |
2366 | return 1; | |
2367 | ||
2368 | return 0; | |
2369 | #endif /* not VMS */ | |
2370 | } | |
2371 | #endif /* not BSTRING */ | |
2372 | \f | |
9927a7b1 | 2373 | #ifndef HAVE_RANDOM |
86a5659e JB |
2374 | #ifdef USG |
2375 | /* | |
2376 | * The BSD random returns numbers in the range of | |
2377 | * 0 to 2e31 - 1. The USG rand returns numbers in the | |
2378 | * range of 0 to 2e15 - 1. This is probably not significant | |
2379 | * in this usage. | |
2380 | */ | |
2381 | ||
2382 | long | |
2383 | random () | |
2384 | { | |
2385 | /* Arrange to return a range centered on zero. */ | |
2386 | return (rand () << 15) + rand () - (1 << 29); | |
2387 | } | |
2388 | ||
2389 | srandom (arg) | |
2390 | int arg; | |
2391 | { | |
2392 | srand (arg); | |
2393 | } | |
2394 | ||
2395 | #endif /* USG */ | |
2396 | ||
2397 | #ifdef BSD4_1 | |
2398 | long random () | |
2399 | { | |
2400 | /* Arrange to return a range centered on zero. */ | |
2401 | return (rand () << 15) + rand () - (1 << 29); | |
2402 | } | |
2403 | ||
2404 | srandom (arg) | |
2405 | int arg; | |
2406 | { | |
2407 | srand (arg); | |
2408 | } | |
2409 | #endif /* BSD4_1 */ | |
9927a7b1 | 2410 | #endif |
86a5659e JB |
2411 | \f |
2412 | #ifdef WRONG_NAME_INSQUE | |
2413 | ||
2414 | insque (q,p) | |
2415 | caddr_t q,p; | |
2416 | { | |
2417 | _insque (q,p); | |
2418 | } | |
2419 | ||
2420 | #endif | |
2421 | \f | |
2422 | #ifdef VMS | |
2423 | ||
2424 | #ifdef getenv | |
2425 | /* If any place else asks for the TERM variable, | |
2426 | allow it to be overridden with the EMACS_TERM variable | |
2427 | before attempting to translate the logical name TERM. As a last | |
2428 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2429 | #undef getenv | |
2430 | char * | |
2431 | sys_getenv (name) | |
2432 | char *name; | |
2433 | { | |
2434 | register char *val; | |
2435 | static char buf[256]; | |
2436 | static struct dsc$descriptor_s equiv | |
2437 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2438 | static struct dsc$descriptor_s d_name | |
2439 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2440 | short eqlen; | |
2441 | ||
2442 | if (!strcmp (name, "TERM")) | |
2443 | { | |
2444 | val = (char *) getenv ("EMACS_TERM"); | |
2445 | if (val) | |
2446 | return val; | |
2447 | } | |
2448 | ||
2449 | d_name.dsc$w_length = strlen (name); | |
2450 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2451 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2452 | { |
2453 | char *str = (char *) xmalloc (eqlen + 1); | |
2454 | bcopy (buf, str, eqlen); | |
2455 | str[eqlen] = '\0'; | |
2456 | /* This is a storage leak, but a pain to fix. With luck, | |
2457 | no one will ever notice. */ | |
2458 | return str; | |
2459 | } | |
2460 | return (char *) getenv (name); | |
2461 | } | |
2462 | #endif /* getenv */ | |
2463 | ||
2464 | #ifdef abort | |
2465 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2466 | to force a call on the debugger from within the image. */ | |
2467 | #undef abort | |
2468 | sys_abort () | |
2469 | { | |
2470 | reset_sys_modes (); | |
2471 | LIB$SIGNAL (SS$_DEBUG); | |
2472 | } | |
2473 | #endif /* abort */ | |
2474 | #endif /* VMS */ | |
2475 | \f | |
2476 | #ifdef VMS | |
2477 | #ifdef LINK_CRTL_SHARE | |
2478 | #ifdef SHAREABLE_LIB_BUG | |
eb8c3be9 | 2479 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2480 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2481 | version which is uninitialized... If not for this "feature", we | |
2482 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2483 | int sys_nerr = 35; | |
2484 | char *sys_errlist[] = | |
2485 | { | |
2486 | "error 0", | |
2487 | "not owner", | |
2488 | "no such file or directory", | |
2489 | "no such process", | |
2490 | "interrupted system call", | |
2491 | "i/o error", | |
2492 | "no such device or address", | |
2493 | "argument list too long", | |
2494 | "exec format error", | |
2495 | "bad file number", | |
2496 | "no child process", | |
2497 | "no more processes", | |
2498 | "not enough memory", | |
2499 | "permission denied", | |
2500 | "bad address", | |
2501 | "block device required", | |
2502 | "mount devices busy", | |
2503 | "file exists", | |
2504 | "cross-device link", | |
2505 | "no such device", | |
2506 | "not a directory", | |
2507 | "is a directory", | |
2508 | "invalid argument", | |
2509 | "file table overflow", | |
2510 | "too many open files", | |
2511 | "not a typewriter", | |
2512 | "text file busy", | |
2513 | "file too big", | |
2514 | "no space left on device", | |
2515 | "illegal seek", | |
2516 | "read-only file system", | |
2517 | "too many links", | |
2518 | "broken pipe", | |
2519 | "math argument", | |
2520 | "result too large", | |
2521 | "I/O stream empty", | |
2522 | "vax/vms specific error code nontranslatable error" | |
2523 | }; | |
2524 | #endif /* SHAREABLE_LIB_BUG */ | |
2525 | #endif /* LINK_CRTL_SHARE */ | |
2526 | #endif /* VMS */ | |
2527 | \f | |
2528 | #ifdef INTERRUPTIBLE_OPEN | |
2529 | ||
2530 | int | |
2531 | /* VARARGS 2 */ | |
2532 | sys_open (path, oflag, mode) | |
2533 | char *path; | |
2534 | int oflag, mode; | |
2535 | { | |
2536 | register int rtnval; | |
2537 | ||
2538 | while ((rtnval = open (path, oflag, mode)) == -1 | |
2539 | && (errno == EINTR)); | |
2540 | return (rtnval); | |
2541 | } | |
2542 | ||
2543 | #endif /* INTERRUPTIBLE_OPEN */ | |
2544 | ||
2545 | #ifdef INTERRUPTIBLE_CLOSE | |
2546 | ||
2547 | sys_close (fd) | |
2548 | int fd; | |
2549 | { | |
2550 | register int rtnval; | |
2551 | ||
2552 | while ((rtnval = close (fd)) == -1 | |
2553 | && (errno == EINTR)); | |
2554 | return rtnval; | |
2555 | } | |
2556 | ||
2557 | #endif /* INTERRUPTIBLE_CLOSE */ | |
2558 | ||
2559 | #ifdef INTERRUPTIBLE_IO | |
2560 | ||
2561 | int | |
2562 | sys_read (fildes, buf, nbyte) | |
2563 | int fildes; | |
2564 | char *buf; | |
2565 | unsigned int nbyte; | |
2566 | { | |
2567 | register int rtnval; | |
2568 | ||
2569 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
2570 | && (errno == EINTR)); | |
2571 | return (rtnval); | |
2572 | } | |
2573 | ||
2574 | int | |
2575 | sys_write (fildes, buf, nbyte) | |
2576 | int fildes; | |
2577 | char *buf; | |
2578 | unsigned int nbyte; | |
2579 | { | |
2580 | register int rtnval; | |
2581 | ||
2582 | while ((rtnval = write (fildes, buf, nbyte)) == -1 | |
2583 | && (errno == EINTR)); | |
2584 | return (rtnval); | |
2585 | } | |
2586 | ||
2587 | #endif /* INTERRUPTIBLE_IO */ | |
2588 | \f | |
0e18d8ef RS |
2589 | #ifndef HAVE_VFORK |
2590 | ||
2591 | /* | |
2592 | * Substitute fork for vfork on USG flavors. | |
2593 | */ | |
2594 | ||
2595 | vfork () | |
2596 | { | |
2597 | return (fork ()); | |
2598 | } | |
2599 | ||
2600 | #endif /* not HAVE_VFORK */ | |
2601 | \f | |
86a5659e JB |
2602 | #ifdef USG |
2603 | /* | |
2604 | * All of the following are for USG. | |
2605 | * | |
2606 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2607 | * that the user program has elected to catch. Thus the system call | |
2608 | * must be retried in these cases. To handle this without massive | |
2609 | * changes in the source code, we remap the standard system call names | |
2610 | * to names for our own functions in sysdep.c that do the system call | |
2611 | * with retries. Actually, for portability reasons, it is good | |
2612 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2613 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2614 | * adds an extra level of function call overhead but it is almost |
2615 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2616 | */ | |
2617 | ||
00eaaa32 | 2618 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
2619 | char *sys_siglist[NSIG + 1] = |
2620 | { | |
2621 | #ifdef AIX | |
2622 | /* AIX has changed the signals a bit */ | |
2623 | "bogus signal", /* 0 */ | |
2624 | "hangup", /* 1 SIGHUP */ | |
2625 | "interrupt", /* 2 SIGINT */ | |
2626 | "quit", /* 3 SIGQUIT */ | |
2627 | "illegal instruction", /* 4 SIGILL */ | |
2628 | "trace trap", /* 5 SIGTRAP */ | |
2629 | "IOT instruction", /* 6 SIGIOT */ | |
2630 | "crash likely", /* 7 SIGDANGER */ | |
2631 | "floating point exception", /* 8 SIGFPE */ | |
2632 | "kill", /* 9 SIGKILL */ | |
2633 | "bus error", /* 10 SIGBUS */ | |
2634 | "segmentation violation", /* 11 SIGSEGV */ | |
2635 | "bad argument to system call", /* 12 SIGSYS */ | |
2636 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2637 | "alarm clock", /* 14 SIGALRM */ | |
2638 | "software termination signum", /* 15 SIGTERM */ | |
2639 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2640 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2641 | "death of a child", /* 18 SIGCLD */ | |
2642 | "power-fail restart", /* 19 SIGPWR */ | |
2643 | "bogus signal", /* 20 */ | |
2644 | "bogus signal", /* 21 */ | |
2645 | "bogus signal", /* 22 */ | |
2646 | "bogus signal", /* 23 */ | |
2647 | "bogus signal", /* 24 */ | |
2648 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
2649 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
2650 | "I/O intervention required", /* 27 SIGIOINT */ | |
2651 | "HFT grant", /* 28 SIGGRANT */ | |
2652 | "HFT retract", /* 29 SIGRETRACT */ | |
2653 | "HFT sound done", /* 30 SIGSOUND */ | |
2654 | "HFT input ready", /* 31 SIGMSG */ | |
2655 | #else /* not AIX */ | |
2656 | "bogus signal", /* 0 */ | |
2657 | "hangup", /* 1 SIGHUP */ | |
2658 | "interrupt", /* 2 SIGINT */ | |
2659 | "quit", /* 3 SIGQUIT */ | |
2660 | "illegal instruction", /* 4 SIGILL */ | |
2661 | "trace trap", /* 5 SIGTRAP */ | |
2662 | "IOT instruction", /* 6 SIGIOT */ | |
2663 | "EMT instruction", /* 7 SIGEMT */ | |
2664 | "floating point exception", /* 8 SIGFPE */ | |
2665 | "kill", /* 9 SIGKILL */ | |
2666 | "bus error", /* 10 SIGBUS */ | |
2667 | "segmentation violation", /* 11 SIGSEGV */ | |
2668 | "bad argument to system call", /* 12 SIGSYS */ | |
2669 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2670 | "alarm clock", /* 14 SIGALRM */ | |
2671 | "software termination signum", /* 15 SIGTERM */ | |
2672 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2673 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2674 | "death of a child", /* 18 SIGCLD */ | |
2675 | "power-fail restart", /* 19 SIGPWR */ | |
2676 | #endif /* not AIX */ | |
2677 | 0 | |
2678 | }; | |
70080de1 | 2679 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
2680 | |
2681 | /* | |
2682 | * Warning, this function may not duplicate 4.2 action properly | |
2683 | * under error conditions. | |
2684 | */ | |
2685 | ||
2686 | #ifndef MAXPATHLEN | |
2687 | /* In 4.1, param.h fails to define this. */ | |
2688 | #define MAXPATHLEN 1024 | |
2689 | #endif | |
2690 | ||
2691 | #ifndef HAVE_GETWD | |
2692 | ||
2693 | char * | |
2694 | getwd (pathname) | |
2695 | char *pathname; | |
2696 | { | |
2697 | char *npath, *spath; | |
2698 | extern char *getcwd (); | |
2699 | ||
9ac0d9e0 | 2700 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e JB |
2701 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
2702 | /* On Altos 3068, getcwd can return @hostname/dir, so discard | |
2703 | up to first slash. Should be harmless on other systems. */ | |
2704 | while (*npath && *npath != '/') | |
2705 | npath++; | |
2706 | strcpy (pathname, npath); | |
2707 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2708 | UNBLOCK_INPUT; |
86a5659e JB |
2709 | return pathname; |
2710 | } | |
2711 | ||
2712 | #endif /* HAVE_GETWD */ | |
2713 | ||
2714 | /* | |
2715 | * Emulate rename using unlink/link. Note that this is | |
2716 | * only partially correct. Also, doesn't enforce restriction | |
2717 | * that files be of same type (regular->regular, dir->dir, etc). | |
2718 | */ | |
2719 | ||
4746118a JB |
2720 | #ifndef HAVE_RENAME |
2721 | ||
86a5659e | 2722 | rename (from, to) |
19c7afdf JB |
2723 | const char *from; |
2724 | const char *to; | |
86a5659e JB |
2725 | { |
2726 | if (access (from, 0) == 0) | |
2727 | { | |
2728 | unlink (to); | |
2729 | if (link (from, to) == 0) | |
2730 | if (unlink (from) == 0) | |
2731 | return (0); | |
2732 | } | |
2733 | return (-1); | |
2734 | } | |
2735 | ||
4746118a JB |
2736 | #endif |
2737 | ||
86a5659e JB |
2738 | #ifdef MISSING_UTIMES |
2739 | ||
2740 | /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */ | |
2741 | ||
2742 | utimes () | |
2743 | { | |
2744 | } | |
2745 | #endif | |
2746 | ||
2747 | #ifdef IRIS_UTIME | |
2748 | ||
2749 | /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the | |
2750 | utimbuf structure defined anywhere but in the man page. */ | |
2751 | ||
2752 | struct utimbuf | |
2753 | { | |
2754 | long actime; | |
2755 | long modtime; | |
2756 | }; | |
2757 | ||
2758 | utimes (name, tvp) | |
2759 | char *name; | |
2760 | struct timeval tvp[]; | |
2761 | { | |
2762 | struct utimbuf utb; | |
2763 | utb.actime = tvp[0].tv_sec; | |
2764 | utb.modtime = tvp[1].tv_sec; | |
2765 | utime (name, &utb); | |
2766 | } | |
2767 | #endif /* IRIS_UTIME */ | |
2768 | ||
2769 | ||
2770 | #ifdef HPUX | |
2771 | #ifndef HAVE_PERROR | |
2772 | ||
2773 | /* HPUX curses library references perror, but as far as we know | |
2774 | it won't be called. Anyway this definition will do for now. */ | |
2775 | ||
2776 | perror () | |
2777 | { | |
2778 | } | |
2779 | ||
2780 | #endif /* not HAVE_PERROR */ | |
2781 | #endif /* HPUX */ | |
2782 | ||
2783 | #ifndef HAVE_DUP2 | |
2784 | ||
2785 | /* | |
2786 | * Emulate BSD dup2. First close newd if it already exists. | |
2787 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
2788 | * until we are, then close the unsuccessful ones. | |
2789 | */ | |
2790 | ||
2791 | dup2 (oldd, newd) | |
2792 | int oldd; | |
2793 | int newd; | |
2794 | { | |
2795 | register int fd, ret; | |
2796 | ||
2797 | sys_close (newd); | |
2798 | ||
2799 | #ifdef F_DUPFD | |
2800 | fd = fcntl (oldd, F_DUPFD, newd); | |
2801 | if (fd != newd) | |
2802 | error ("can't dup2 (%i,%i) : %s", oldd, newd, sys_errlist[errno]); | |
2803 | #else | |
2804 | fd = dup (old); | |
2805 | if (fd == -1) | |
2806 | return -1; | |
2807 | if (fd == new) | |
2808 | return new; | |
2809 | ret = dup2 (old,new); | |
2810 | sys_close (fd); | |
2811 | return ret; | |
2812 | #endif | |
2813 | } | |
2814 | ||
2815 | #endif /* not HAVE_DUP2 */ | |
2816 | ||
2817 | /* | |
2818 | * Gettimeofday. Simulate as much as possible. Only accurate | |
2819 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
2820 | * Only needed when subprocesses are defined. | |
2821 | */ | |
2822 | ||
2823 | #ifdef subprocesses | |
2824 | #ifndef VMS | |
2825 | #ifndef HAVE_GETTIMEOFDAY | |
2826 | #ifdef HAVE_TIMEVAL | |
2827 | ||
2828 | /* ARGSUSED */ | |
2829 | gettimeofday (tp, tzp) | |
2830 | struct timeval *tp; | |
2831 | struct timezone *tzp; | |
2832 | { | |
2833 | extern long time (); | |
2834 | ||
2835 | tp->tv_sec = time ((long *)0); | |
2836 | tp->tv_usec = 0; | |
4ca7594f RS |
2837 | if (tzp != 0) |
2838 | tzp->tz_minuteswest = -1; | |
86a5659e JB |
2839 | } |
2840 | ||
2841 | #endif | |
2842 | #endif | |
2843 | #endif | |
2844 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
2845 | ||
2846 | /* | |
2847 | * This function will go away as soon as all the stubs fixed. (fnf) | |
2848 | */ | |
2849 | ||
2850 | croak (badfunc) | |
2851 | char *badfunc; | |
2852 | { | |
2853 | printf ("%s not yet implemented\r\n", badfunc); | |
2854 | reset_sys_modes (); | |
2855 | exit (1); | |
2856 | } | |
2857 | ||
2858 | #endif /* USG */ | |
2859 | \f | |
2860 | #ifdef DGUX | |
2861 | ||
2862 | char *sys_siglist[NSIG + 1] = | |
2863 | { | |
2864 | "null signal", /* 0 SIGNULL */ | |
2865 | "hangup", /* 1 SIGHUP */ | |
2866 | "interrupt", /* 2 SIGINT */ | |
2867 | "quit", /* 3 SIGQUIT */ | |
2868 | "illegal instruction", /* 4 SIGILL */ | |
2869 | "trace trap", /* 5 SIGTRAP */ | |
2870 | "abort termination", /* 6 SIGABRT */ | |
2871 | "SIGEMT", /* 7 SIGEMT */ | |
2872 | "floating point exception", /* 8 SIGFPE */ | |
2873 | "kill", /* 9 SIGKILL */ | |
2874 | "bus error", /* 10 SIGBUS */ | |
2875 | "segmentation violation", /* 11 SIGSEGV */ | |
2876 | "bad argument to system call", /* 12 SIGSYS */ | |
2877 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
2878 | "alarm clock", /* 14 SIGALRM */ | |
2879 | "software termination signal", /* 15 SIGTERM */ | |
2880 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2881 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2882 | "child stopped or terminated", /* 18 SIGCLD */ | |
2883 | "power-fail restart", /* 19 SIGPWR */ | |
2884 | "window size changed", /* 20 SIGWINCH */ | |
2885 | "undefined", /* 21 */ | |
eb8c3be9 | 2886 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
2887 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
2888 | "stop signal from tty", /* 24 SIGSTP */ | |
2889 | "continue a stopped process", /* 25 SIGCONT */ | |
2890 | "attempted background tty read", /* 26 SIGTTIN */ | |
2891 | "attempted background tty write", /* 27 SIGTTOU */ | |
2892 | "undefined", /* 28 */ | |
2893 | "undefined", /* 29 */ | |
2894 | "undefined", /* 30 */ | |
2895 | "undefined", /* 31 */ | |
2896 | "undefined", /* 32 */ | |
2897 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
2898 | "I/O is possible", /* 34 SIGIO */ | |
2899 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
2900 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
2901 | "virtual time alarm", /* 37 SIGVTALRM */ | |
2902 | "profiling time alarm", /* 38 SIGPROF */ | |
2903 | "undefined", /* 39 */ | |
2904 | "file record locks revoked", /* 40 SIGLOST */ | |
2905 | "undefined", /* 41 */ | |
2906 | "undefined", /* 42 */ | |
2907 | "undefined", /* 43 */ | |
2908 | "undefined", /* 44 */ | |
2909 | "undefined", /* 45 */ | |
2910 | "undefined", /* 46 */ | |
2911 | "undefined", /* 47 */ | |
2912 | "undefined", /* 48 */ | |
2913 | "undefined", /* 49 */ | |
2914 | "undefined", /* 50 */ | |
2915 | "undefined", /* 51 */ | |
2916 | "undefined", /* 52 */ | |
2917 | "undefined", /* 53 */ | |
2918 | "undefined", /* 54 */ | |
2919 | "undefined", /* 55 */ | |
2920 | "undefined", /* 56 */ | |
2921 | "undefined", /* 57 */ | |
2922 | "undefined", /* 58 */ | |
2923 | "undefined", /* 59 */ | |
2924 | "undefined", /* 60 */ | |
2925 | "undefined", /* 61 */ | |
2926 | "undefined", /* 62 */ | |
2927 | "undefined", /* 63 */ | |
2928 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
2929 | 0 | |
2930 | }; | |
2931 | ||
2932 | #endif /* DGUX */ | |
2933 | \f | |
2934 | /* Directory routines for systems that don't have them. */ | |
2935 | ||
2936 | #ifdef SYSV_SYSTEM_DIR | |
2937 | ||
2938 | #include <dirent.h> | |
2939 | ||
65aa44ac | 2940 | #ifndef HAVE_CLOSEDIR |
86a5659e JB |
2941 | int |
2942 | closedir (dirp) | |
2943 | register DIR *dirp; /* stream from opendir */ | |
2944 | { | |
2945 | sys_close (dirp->dd_fd); | |
1b929d25 | 2946 | |
65aa44ac JB |
2947 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
2948 | in one block. Why in the world are we freeing this ourselves | |
2949 | anyway? */ | |
2950 | #if ! (defined (sun) && defined (USG5_4)) | |
2951 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
2952 | #endif | |
9ac0d9e0 | 2953 | xfree ((char *) dirp); |
86a5659e | 2954 | } |
65aa44ac | 2955 | #endif /* not HAVE_CLOSEDIR */ |
86a5659e JB |
2956 | #endif /* SYSV_SYSTEM_DIR */ |
2957 | ||
2958 | #ifdef NONSYSTEM_DIR_LIBRARY | |
2959 | ||
2960 | DIR * | |
2961 | opendir (filename) | |
2962 | char *filename; /* name of directory */ | |
2963 | { | |
2964 | register DIR *dirp; /* -> malloc'ed storage */ | |
2965 | register int fd; /* file descriptor for read */ | |
2966 | struct stat sbuf; /* result of fstat */ | |
2967 | ||
2968 | fd = sys_open (filename, 0); | |
2969 | if (fd < 0) | |
2970 | return 0; | |
2971 | ||
9ac0d9e0 | 2972 | BLOCK_INPUT; |
86a5659e JB |
2973 | if (fstat (fd, &sbuf) < 0 |
2974 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
2975 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
2976 | { | |
2977 | sys_close (fd); | |
9ac0d9e0 | 2978 | UNBLOCK_INPUT; |
86a5659e JB |
2979 | return 0; /* bad luck today */ |
2980 | } | |
9ac0d9e0 | 2981 | UNBLOCK_INPUT; |
86a5659e JB |
2982 | |
2983 | dirp->dd_fd = fd; | |
2984 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
2985 | ||
2986 | return dirp; | |
2987 | } | |
2988 | ||
2989 | void | |
2990 | closedir (dirp) | |
2991 | register DIR *dirp; /* stream from opendir */ | |
2992 | { | |
2993 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 2994 | xfree ((char *) dirp); |
86a5659e JB |
2995 | } |
2996 | ||
2997 | ||
2998 | #ifndef VMS | |
2999 | #define DIRSIZ 14 | |
3000 | struct olddir | |
3001 | { | |
3002 | ino_t od_ino; /* inode */ | |
3003 | char od_name[DIRSIZ]; /* filename */ | |
3004 | }; | |
3005 | #endif /* not VMS */ | |
3006 | ||
3007 | struct direct dir_static; /* simulated directory contents */ | |
3008 | ||
3009 | /* ARGUSED */ | |
3010 | struct direct * | |
3011 | readdir (dirp) | |
3012 | register DIR *dirp; /* stream from opendir */ | |
3013 | { | |
3014 | #ifndef VMS | |
3015 | register struct olddir *dp; /* -> directory data */ | |
3016 | #else /* VMS */ | |
3017 | register struct dir$_name *dp; /* -> directory data */ | |
3018 | register struct dir$_version *dv; /* -> version data */ | |
3019 | #endif /* VMS */ | |
3020 | ||
3021 | for (; ;) | |
3022 | { | |
3023 | if (dirp->dd_loc >= dirp->dd_size) | |
3024 | dirp->dd_loc = dirp->dd_size = 0; | |
3025 | ||
3026 | if (dirp->dd_size == 0 /* refill buffer */ | |
3027 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3028 | return 0; | |
3029 | ||
3030 | #ifndef VMS | |
3031 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3032 | dirp->dd_loc += sizeof (struct olddir); | |
3033 | ||
3034 | if (dp->od_ino != 0) /* not deleted entry */ | |
3035 | { | |
3036 | dir_static.d_ino = dp->od_ino; | |
3037 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3038 | dir_static.d_name[DIRSIZ] = '\0'; | |
3039 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3040 | dir_static.d_reclen = sizeof (struct direct) | |
3041 | - MAXNAMLEN + 3 | |
3042 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3043 | return &dir_static; /* -> simulated structure */ | |
3044 | } | |
3045 | #else /* VMS */ | |
3046 | dp = (struct dir$_name *) dirp->dd_buf; | |
3047 | if (dirp->dd_loc == 0) | |
3048 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3049 | : dp->dir$b_namecount; | |
3050 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3051 | dir_static.d_ino = dv->dir$w_fid_num; | |
3052 | dir_static.d_namlen = dp->dir$b_namecount; | |
3053 | dir_static.d_reclen = sizeof (struct direct) | |
3054 | - MAXNAMLEN + 3 | |
3055 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3056 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3057 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3058 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3059 | return &dir_static; | |
3060 | #endif /* VMS */ | |
3061 | } | |
3062 | } | |
3063 | ||
3064 | #ifdef VMS | |
3065 | /* readdirver is just like readdir except it returns all versions of a file | |
3066 | as separate entries. */ | |
3067 | ||
3068 | /* ARGUSED */ | |
3069 | struct direct * | |
3070 | readdirver (dirp) | |
3071 | register DIR *dirp; /* stream from opendir */ | |
3072 | { | |
3073 | register struct dir$_name *dp; /* -> directory data */ | |
3074 | register struct dir$_version *dv; /* -> version data */ | |
3075 | ||
3076 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3077 | dirp->dd_loc = dirp->dd_size = 0; | |
3078 | ||
3079 | if (dirp->dd_size == 0 /* refill buffer */ | |
3080 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3081 | return 0; | |
3082 | ||
3083 | dp = (struct dir$_name *) dirp->dd_buf; | |
3084 | if (dirp->dd_loc == 0) | |
3085 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3086 | : dp->dir$b_namecount; | |
3087 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3088 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3089 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3090 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3091 | dir_static.d_ino = dv->dir$w_fid_num; | |
3092 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3093 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3094 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3095 | return &dir_static; | |
3096 | } | |
3097 | ||
3098 | #endif /* VMS */ | |
3099 | ||
3100 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3101 | |
3102 | \f | |
3103 | /* mkdir and rmdir functions, for systems which don't have them. */ | |
3104 | ||
3105 | #ifndef HAVE_MKDIR | |
3106 | /* | |
3107 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3108 | * | |
3109 | * If you want it, it's yours. All I ask in return is that if you | |
3110 | * figure out how to do this in a Bourne Shell script you send me | |
3111 | * a copy. | |
3112 | * sdcsvax!rmr or rmr@uscd | |
3113 | * | |
3114 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3115 | * subroutine. 11Mar86; hoptoad!gnu | |
3116 | * | |
3117 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3118 | * subroutine didn't return EEXIST. It does now. | |
3119 | */ | |
3120 | ||
3121 | /* | |
3122 | * Make a directory. | |
3123 | */ | |
3124 | int | |
3125 | mkdir (dpath, dmode) | |
3126 | char *dpath; | |
3127 | int dmode; | |
3128 | { | |
039f26a4 | 3129 | int cpid, status, fd; |
23524fb9 JB |
3130 | struct stat statbuf; |
3131 | ||
3132 | if (stat (dpath, &statbuf) == 0) | |
3133 | { | |
3134 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3135 | return -1; | |
3136 | } | |
3137 | ||
3138 | /* If stat fails for a reason other than non-existence, return error */ | |
3139 | if (errno != ENOENT) | |
3140 | return -1; | |
3141 | ||
039f26a4 | 3142 | synch_process_alive = 1; |
23524fb9 JB |
3143 | switch (cpid = fork ()) |
3144 | { | |
3145 | ||
039f26a4 | 3146 | case -1: /* Error in fork */ |
23524fb9 JB |
3147 | return (-1); /* Errno is set already */ |
3148 | ||
3149 | case 0: /* Child process */ | |
3150 | /* | |
3151 | * Cheap hack to set mode of new directory. Since this | |
3152 | * child process is going away anyway, we zap its umask. | |
3153 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3154 | * directory. Does anybody care? | |
3155 | */ | |
3156 | status = umask (0); /* Get current umask */ | |
3157 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3158 | fd = sys_open("/dev/null", 2); |
3159 | if (fd >= 0) | |
3160 | { | |
3161 | dup2 (fd, 0); | |
3162 | dup2 (fd, 1); | |
3163 | dup2 (fd, 2); | |
3164 | } | |
23524fb9 JB |
3165 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3166 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3167 | ||
3168 | default: /* Parent process */ | |
039f26a4 | 3169 | wait_for_termination (cpid); |
23524fb9 JB |
3170 | } |
3171 | ||
039f26a4 | 3172 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3173 | { |
3174 | errno = EIO; /* We don't know why, but */ | |
3175 | return -1; /* /bin/mkdir failed */ | |
3176 | } | |
3177 | ||
3178 | return 0; | |
3179 | } | |
3180 | #endif /* not HAVE_MKDIR */ | |
3181 | ||
3182 | #ifndef HAVE_RMDIR | |
3183 | int | |
3184 | rmdir (dpath) | |
3185 | char *dpath; | |
3186 | { | |
039f26a4 | 3187 | int cpid, status, fd; |
23524fb9 JB |
3188 | struct stat statbuf; |
3189 | ||
3190 | if (stat (dpath, &statbuf) != 0) | |
3191 | { | |
3192 | /* Stat just set errno. We don't have to */ | |
3193 | return -1; | |
3194 | } | |
3195 | ||
039f26a4 | 3196 | synch_process_alive = 1; |
23524fb9 JB |
3197 | switch (cpid = fork ()) |
3198 | { | |
3199 | ||
039f26a4 | 3200 | case -1: /* Error in fork */ |
23524fb9 JB |
3201 | return (-1); /* Errno is set already */ |
3202 | ||
3203 | case 0: /* Child process */ | |
039f26a4 RS |
3204 | fd = sys_open("/dev/null", 2); |
3205 | if (fd >= 0) | |
3206 | { | |
3207 | dup2 (fd, 0); | |
3208 | dup2 (fd, 1); | |
3209 | dup2 (fd, 2); | |
3210 | } | |
23524fb9 JB |
3211 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
3212 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3213 | ||
3214 | default: /* Parent process */ | |
039f26a4 | 3215 | wait_for_termination (cpid); |
23524fb9 JB |
3216 | } |
3217 | ||
039f26a4 | 3218 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3219 | { |
3220 | errno = EIO; /* We don't know why, but */ | |
039f26a4 | 3221 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
3222 | } |
3223 | ||
3224 | return 0; | |
3225 | } | |
3226 | #endif /* !HAVE_RMDIR */ | |
3227 | ||
3228 | ||
86a5659e JB |
3229 | \f |
3230 | /* Functions for VMS */ | |
3231 | #ifdef VMS | |
91bac16a | 3232 | #include "vms-pwd.h" |
86a5659e JB |
3233 | #include <acldef.h> |
3234 | #include <chpdef.h> | |
3235 | #include <jpidef.h> | |
3236 | ||
3237 | /* Return as a string the VMS error string pertaining to STATUS. | |
3238 | Reuses the same static buffer each time it is called. */ | |
3239 | ||
3240 | char * | |
3241 | vmserrstr (status) | |
3242 | int status; /* VMS status code */ | |
3243 | { | |
3244 | int bufadr[2]; | |
3245 | short len; | |
3246 | static char buf[257]; | |
3247 | ||
3248 | bufadr[0] = sizeof buf - 1; | |
3249 | bufadr[1] = (int) buf; | |
3250 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3251 | return "untranslatable VMS error status"; | |
3252 | buf[len] = '\0'; | |
3253 | return buf; | |
3254 | } | |
3255 | ||
3256 | #ifdef access | |
3257 | #undef access | |
3258 | ||
3259 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3260 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3261 | */ | |
3262 | ||
3263 | #ifdef VMS4_4 | |
3264 | ||
3265 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3266 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3267 | ||
3268 | typedef union { | |
3269 | struct { | |
3270 | unsigned short s_buflen; | |
3271 | unsigned short s_code; | |
3272 | char *s_bufadr; | |
3273 | unsigned short *s_retlenadr; | |
3274 | } s; | |
3275 | int end; | |
3276 | } item; | |
3277 | #define buflen s.s_buflen | |
3278 | #define code s.s_code | |
3279 | #define bufadr s.s_bufadr | |
3280 | #define retlenadr s.s_retlenadr | |
3281 | ||
3282 | #define R_OK 4 /* test for read permission */ | |
3283 | #define W_OK 2 /* test for write permission */ | |
3284 | #define X_OK 1 /* test for execute (search) permission */ | |
3285 | #define F_OK 0 /* test for presence of file */ | |
3286 | ||
3287 | int | |
3288 | sys_access (path, mode) | |
3289 | char *path; | |
3290 | int mode; | |
3291 | { | |
3292 | static char *user = NULL; | |
3293 | char dir_fn[512]; | |
3294 | ||
3295 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3296 | * access can treat the directory like a file. */ | |
3297 | if (directory_file_name (path, dir_fn)) | |
3298 | path = dir_fn; | |
3299 | ||
3300 | if (mode == F_OK) | |
3301 | return access (path, mode); | |
3302 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3303 | return -1; | |
3304 | { | |
3305 | int stat; | |
3306 | int flags; | |
3307 | int acces; | |
3308 | unsigned short int dummy; | |
3309 | item itemlst[3]; | |
3310 | static int constant = ACL$C_FILE; | |
3311 | DESCRIPTOR (path_desc, path); | |
3312 | DESCRIPTOR (user_desc, user); | |
3313 | ||
3314 | flags = 0; | |
3315 | acces = 0; | |
3316 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3317 | return stat; | |
3318 | if (mode & R_OK) | |
3319 | acces |= CHP$M_READ; | |
3320 | if (mode & W_OK) | |
3321 | acces |= CHP$M_WRITE; | |
3322 | itemlst[0].buflen = sizeof (int); | |
3323 | itemlst[0].code = CHP$_FLAGS; | |
3324 | itemlst[0].bufadr = (char *) &flags; | |
3325 | itemlst[0].retlenadr = &dummy; | |
3326 | itemlst[1].buflen = sizeof (int); | |
3327 | itemlst[1].code = CHP$_ACCESS; | |
3328 | itemlst[1].bufadr = (char *) &acces; | |
3329 | itemlst[1].retlenadr = &dummy; | |
3330 | itemlst[2].end = CHP$_END; | |
3331 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3332 | return stat == SS$_NORMAL ? 0 : -1; | |
3333 | } | |
3334 | } | |
3335 | ||
3336 | #else /* not VMS4_4 */ | |
3337 | ||
3338 | #include <prvdef.h> | |
3339 | #define ACE$M_WRITE 2 | |
3340 | #define ACE$C_KEYID 1 | |
3341 | ||
3342 | static unsigned short memid, grpid; | |
3343 | static unsigned int uic; | |
3344 | ||
3345 | /* Called from init_sys_modes, so it happens not very often | |
3346 | but at least each time Emacs is loaded. */ | |
3347 | sys_access_reinit () | |
3348 | { | |
3349 | uic = 0; | |
3350 | } | |
3351 | ||
3352 | int | |
3353 | sys_access (filename, type) | |
3354 | char * filename; | |
3355 | int type; | |
3356 | { | |
3357 | struct FAB fab; | |
3358 | struct XABPRO xab; | |
3359 | int status, size, i, typecode, acl_controlled; | |
3360 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3361 | union prvdef prvmask; | |
3362 | ||
3363 | /* Get UIC and GRP values for protection checking. */ | |
3364 | if (uic == 0) | |
3365 | { | |
3366 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3367 | if (! (status & 1)) | |
3368 | return -1; | |
3369 | memid = uic & 0xFFFF; | |
3370 | grpid = uic >> 16; | |
3371 | } | |
3372 | ||
3373 | if (type != 2) /* not checking write access */ | |
3374 | return access (filename, type); | |
3375 | ||
3376 | /* Check write protection. */ | |
3377 | ||
3378 | #define CHECKPRIV(bit) (prvmask.bit) | |
3379 | #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) | |
3380 | ||
3381 | /* Find privilege bits */ | |
986ffb24 | 3382 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3383 | if (! (status & 1)) |
3384 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3385 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3386 | return 0; /* BYPASS enabled */ | |
3387 | fab = cc$rms_fab; | |
3388 | fab.fab$b_fac = FAB$M_GET; | |
3389 | fab.fab$l_fna = filename; | |
3390 | fab.fab$b_fns = strlen (filename); | |
3391 | fab.fab$l_xab = &xab; | |
3392 | xab = cc$rms_xabpro; | |
3393 | xab.xab$l_aclbuf = aclbuf; | |
3394 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3395 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3396 | if (! (status & 1)) |
3397 | return -1; | |
986ffb24 | 3398 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3399 | /* Check system access */ |
3400 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS)) | |
3401 | return 0; | |
3402 | /* Check ACL entries, if any */ | |
3403 | acl_controlled = 0; | |
3404 | if (xab.xab$w_acllen > 0) | |
3405 | { | |
3406 | aclptr = aclbuf; | |
3407 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3408 | while (*aclptr && aclptr < aclend) | |
3409 | { | |
3410 | size = (*aclptr & 0xff) / 4; | |
3411 | typecode = (*aclptr >> 8) & 0xff; | |
3412 | if (typecode == ACE$C_KEYID) | |
3413 | for (i = size - 1; i > 1; i--) | |
3414 | if (aclptr[i] == uic) | |
3415 | { | |
3416 | acl_controlled = 1; | |
3417 | if (aclptr[1] & ACE$M_WRITE) | |
3418 | return 0; /* Write access through ACL */ | |
3419 | } | |
3420 | aclptr = &aclptr[size]; | |
3421 | } | |
3422 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3423 | return -1; | |
3424 | } | |
3425 | /* No ACL entries specified, check normal protection */ | |
3426 | if (WRITEABLE (XAB$V_WLD)) /* World writeable */ | |
3427 | return 0; | |
3428 | if (WRITEABLE (XAB$V_GRP) && | |
3429 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) | |
3430 | return 0; /* Group writeable */ | |
3431 | if (WRITEABLE (XAB$V_OWN) && | |
3432 | (xab.xab$l_uic & 0xFFFF) == memid) | |
3433 | return 0; /* Owner writeable */ | |
3434 | ||
3435 | return -1; /* Not writeable */ | |
3436 | } | |
3437 | #endif /* not VMS4_4 */ | |
3438 | #endif /* access */ | |
3439 | ||
3440 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3441 | ||
3442 | /* translate a vms file spec to a unix path */ | |
3443 | char * | |
3444 | sys_translate_vms (vfile) | |
3445 | char * vfile; | |
3446 | { | |
3447 | char * p; | |
3448 | char * targ; | |
3449 | ||
3450 | if (!vfile) | |
3451 | return 0; | |
3452 | ||
3453 | targ = vtbuf; | |
3454 | ||
3455 | /* leading device or logical name is a root directory */ | |
3456 | if (p = strchr (vfile, ':')) | |
3457 | { | |
3458 | *targ++ = '/'; | |
3459 | while (vfile < p) | |
3460 | *targ++ = *vfile++; | |
3461 | vfile++; | |
3462 | *targ++ = '/'; | |
3463 | } | |
3464 | p = vfile; | |
3465 | if (*p == '[' || *p == '<') | |
3466 | { | |
3467 | while (*++vfile != *p + 2) | |
3468 | switch (*vfile) | |
3469 | { | |
3470 | case '.': | |
3471 | if (vfile[-1] == *p) | |
3472 | *targ++ = '.'; | |
3473 | *targ++ = '/'; | |
3474 | break; | |
3475 | ||
3476 | case '-': | |
3477 | *targ++ = '.'; | |
3478 | *targ++ = '.'; | |
3479 | break; | |
3480 | ||
3481 | default: | |
3482 | *targ++ = *vfile; | |
3483 | break; | |
3484 | } | |
3485 | vfile++; | |
3486 | *targ++ = '/'; | |
3487 | } | |
3488 | while (*vfile) | |
3489 | *targ++ = *vfile++; | |
3490 | ||
3491 | return vtbuf; | |
3492 | } | |
3493 | ||
3494 | static char utbuf[NAM$C_MAXRSS+1]; | |
3495 | ||
3496 | /* translate a unix path to a VMS file spec */ | |
3497 | char * | |
3498 | sys_translate_unix (ufile) | |
3499 | char * ufile; | |
3500 | { | |
3501 | int slash_seen = 0; | |
3502 | char *p; | |
3503 | char * targ; | |
3504 | ||
3505 | if (!ufile) | |
3506 | return 0; | |
3507 | ||
3508 | targ = utbuf; | |
3509 | ||
3510 | if (*ufile == '/') | |
3511 | { | |
3512 | ufile++; | |
3513 | } | |
3514 | ||
3515 | while (*ufile) | |
3516 | { | |
3517 | switch (*ufile) | |
3518 | { | |
3519 | case '/': | |
3520 | if (slash_seen) | |
3521 | if (index (&ufile[1], '/')) | |
3522 | *targ++ = '.'; | |
3523 | else | |
3524 | *targ++ = ']'; | |
3525 | else | |
3526 | { | |
3527 | *targ++ = ':'; | |
3528 | if (index (&ufile[1], '/')) | |
3529 | *targ++ = '['; | |
3530 | slash_seen = 1; | |
3531 | } | |
3532 | break; | |
3533 | ||
3534 | case '.': | |
3535 | if (strncmp (ufile, "./", 2) == 0) | |
3536 | { | |
3537 | if (!slash_seen) | |
3538 | { | |
3539 | *targ++ = '['; | |
3540 | slash_seen = 1; | |
3541 | } | |
3542 | ufile++; /* skip the dot */ | |
3543 | if (index (&ufile[1], '/')) | |
3544 | *targ++ = '.'; | |
3545 | else | |
3546 | *targ++ = ']'; | |
3547 | } | |
3548 | else if (strncmp (ufile, "../", 3) == 0) | |
3549 | { | |
3550 | if (!slash_seen) | |
3551 | { | |
3552 | *targ++ = '['; | |
3553 | slash_seen = 1; | |
3554 | } | |
3555 | *targ++ = '-'; | |
3556 | ufile += 2; /* skip the dots */ | |
3557 | if (index (&ufile[1], '/')) | |
3558 | *targ++ = '.'; | |
3559 | else | |
3560 | *targ++ = ']'; | |
3561 | } | |
3562 | else | |
3563 | *targ++ = *ufile; | |
3564 | break; | |
3565 | ||
3566 | default: | |
3567 | *targ++ = *ufile; | |
3568 | break; | |
3569 | } | |
3570 | ufile++; | |
3571 | } | |
3572 | *targ = '\0'; | |
3573 | ||
3574 | return utbuf; | |
3575 | } | |
3576 | ||
3577 | char * | |
3578 | getwd (pathname) | |
3579 | char *pathname; | |
3580 | { | |
3581 | char *ptr; | |
210b2b4f | 3582 | extern char *getcwd (); |
86a5659e | 3583 | |
210b2b4f JB |
3584 | #define MAXPATHLEN 1024 |
3585 | ||
9ac0d9e0 | 3586 | ptr = xmalloc (MAXPATHLEN); |
210b2b4f JB |
3587 | getcwd (ptr, MAXPATHLEN); |
3588 | strcpy (pathname, ptr); | |
9ac0d9e0 | 3589 | xfree (ptr); |
210b2b4f JB |
3590 | |
3591 | return pathname; | |
86a5659e JB |
3592 | } |
3593 | ||
3594 | getppid () | |
3595 | { | |
3596 | long item_code = JPI$_OWNER; | |
3597 | unsigned long parent_id; | |
3598 | int status; | |
3599 | ||
3600 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
3601 | { | |
3602 | errno = EVMSERR; | |
3603 | vaxc$errno = status; | |
3604 | return -1; | |
3605 | } | |
3606 | return parent_id; | |
3607 | } | |
3608 | ||
3609 | #undef getuid | |
3610 | unsigned | |
3611 | sys_getuid () | |
3612 | { | |
3613 | return (getgid () << 16) | getuid (); | |
3614 | } | |
3615 | ||
3616 | int | |
3617 | sys_read (fildes, buf, nbyte) | |
3618 | int fildes; | |
3619 | char *buf; | |
3620 | unsigned int nbyte; | |
3621 | { | |
3622 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
3623 | } | |
3624 | ||
3625 | #if 0 | |
3626 | int | |
3627 | sys_write (fildes, buf, nbyte) | |
3628 | int fildes; | |
3629 | char *buf; | |
3630 | unsigned int nbyte; | |
3631 | { | |
3632 | register int nwrote, rtnval = 0; | |
3633 | ||
3634 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
3635 | nbyte -= nwrote; | |
3636 | buf += nwrote; | |
3637 | rtnval += nwrote; | |
3638 | } | |
3639 | if (nwrote < 0) | |
3640 | return rtnval ? rtnval : -1; | |
3641 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
3642 | return rtnval ? rtnval : -1; | |
3643 | return (rtnval + nwrote); | |
3644 | } | |
3645 | #endif /* 0 */ | |
3646 | ||
3647 | /* | |
3648 | * VAX/VMS VAX C RTL really loses. It insists that records | |
3649 | * end with a newline (carriage return) character, and if they | |
3650 | * don't it adds one (nice of it isn't it!) | |
3651 | * | |
3652 | * Thus we do this stupidity below. | |
3653 | */ | |
3654 | ||
3655 | int | |
3656 | sys_write (fildes, buf, nbytes) | |
3657 | int fildes; | |
3658 | char *buf; | |
3659 | unsigned int nbytes; | |
3660 | { | |
3661 | register char *p; | |
3662 | register char *e; | |
23b0668c JB |
3663 | int sum = 0; |
3664 | struct stat st; | |
3665 | ||
3666 | fstat (fildes, &st); | |
86a5659e | 3667 | p = buf; |
86a5659e JB |
3668 | while (nbytes > 0) |
3669 | { | |
23b0668c JB |
3670 | int len, retval; |
3671 | ||
3672 | /* Handle fixed-length files with carriage control. */ | |
3673 | if (st.st_fab_rfm == FAB$C_FIX | |
3674 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
3675 | { | |
3676 | len = st.st_fab_mrs; | |
3677 | retval = write (fildes, p, min (len, nbytes)); | |
3678 | if (retval != len) | |
3679 | return -1; | |
3680 | retval++; /* This skips the implied carriage control */ | |
3681 | } | |
3682 | else | |
3683 | { | |
3684 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3685 | while (*e != '\n' && e > p) e--; | |
3686 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
3687 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3688 | len = e + 1 - p; | |
3689 | retval = write (fildes, p, len); | |
3690 | if (retval != len) | |
3691 | return -1; | |
3692 | } | |
3693 | p += retval; | |
3694 | sum += retval; | |
86a5659e JB |
3695 | nbytes -= retval; |
3696 | } | |
3697 | return sum; | |
3698 | } | |
3699 | ||
3700 | /* Create file NEW copying its attributes from file OLD. If | |
3701 | OLD is 0 or does not exist, create based on the value of | |
3702 | vms_stmlf_recfm. */ | |
3703 | ||
3704 | /* Protection value the file should ultimately have. | |
3705 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
3706 | static unsigned short int fab_final_pro; | |
3707 | ||
3708 | int | |
3709 | creat_copy_attrs (old, new) | |
3710 | char *old, *new; | |
3711 | { | |
3712 | struct FAB fab = cc$rms_fab; | |
3713 | struct XABPRO xabpro; | |
3714 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
3715 | extern int vms_stmlf_recfm; | |
3716 | ||
3717 | if (old) | |
3718 | { | |
3719 | fab.fab$b_fac = FAB$M_GET; | |
3720 | fab.fab$l_fna = old; | |
3721 | fab.fab$b_fns = strlen (old); | |
3722 | fab.fab$l_xab = (char *) &xabpro; | |
3723 | xabpro = cc$rms_xabpro; | |
3724 | xabpro.xab$l_aclbuf = aclbuf; | |
3725 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
3726 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 3727 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 3728 | { |
986ffb24 | 3729 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3730 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
3731 | if (xabpro.xab$w_acllen > 0) | |
3732 | { | |
3733 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
3734 | /* If the acl buffer was too short, redo open with longer one. | |
3735 | Wouldn't need to do this if there were some system imposed | |
3736 | limit on the size of an ACL, but I can't find any such. */ | |
3737 | { | |
3738 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
3739 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
3740 | if (SYS$OPEN (&fab, 0, 0) & 1) |
3741 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
3742 | else |
3743 | old = 0; | |
3744 | } | |
3745 | } | |
3746 | else | |
3747 | xabpro.xab$l_aclbuf = 0; | |
3748 | } | |
3749 | else | |
3750 | old = 0; | |
3751 | } | |
3752 | fab.fab$l_fna = new; | |
3753 | fab.fab$b_fns = strlen (new); | |
3754 | if (!old) | |
3755 | { | |
3756 | fab.fab$l_xab = 0; | |
3757 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
3758 | fab.fab$b_rat = FAB$M_CR; | |
3759 | } | |
3760 | ||
3761 | /* Set the file protections such that we will be able to manipulate | |
3762 | this file. Once we are done writing and renaming it, we will set | |
3763 | the protections back. */ | |
3764 | if (old) | |
3765 | fab_final_pro = xabpro.xab$w_pro; | |
3766 | else | |
986ffb24 | 3767 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
3768 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
3769 | ||
3770 | /* Create the new file with either default attrs or attrs copied | |
3771 | from old file. */ | |
3772 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
3773 | return -1; | |
986ffb24 | 3774 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3775 | /* As this is a "replacement" for creat, return a file descriptor |
3776 | opened for writing. */ | |
3777 | return open (new, O_WRONLY); | |
3778 | } | |
3779 | ||
3780 | #ifdef creat | |
3781 | #undef creat | |
3782 | #include <varargs.h> | |
3783 | #ifdef __GNUC__ | |
3784 | #ifndef va_count | |
3785 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
3786 | #endif | |
3787 | #endif | |
3788 | ||
3789 | sys_creat (va_alist) | |
3790 | va_dcl | |
3791 | { | |
eb8c3be9 | 3792 | va_list list_incrementer; |
86a5659e JB |
3793 | char *name; |
3794 | int mode; | |
3795 | int rfd; /* related file descriptor */ | |
3796 | int fd; /* Our new file descriptor */ | |
3797 | int count; | |
3798 | struct stat st_buf; | |
3799 | char rfm[12]; | |
3800 | char rat[15]; | |
3801 | char mrs[13]; | |
3802 | char fsz[13]; | |
3803 | extern int vms_stmlf_recfm; | |
3804 | ||
3805 | va_count (count); | |
eb8c3be9 JB |
3806 | va_start (list_incrementer); |
3807 | name = va_arg (list_incrementer, char *); | |
3808 | mode = va_arg (list_incrementer, int); | |
86a5659e | 3809 | if (count > 2) |
eb8c3be9 JB |
3810 | rfd = va_arg (list_incrementer, int); |
3811 | va_end (list_incrementer); | |
86a5659e JB |
3812 | if (count > 2) |
3813 | { | |
3814 | /* Use information from the related file descriptor to set record | |
3815 | format of the newly created file. */ | |
3816 | fstat (rfd, &st_buf); | |
3817 | switch (st_buf.st_fab_rfm) | |
3818 | { | |
3819 | case FAB$C_FIX: | |
3820 | strcpy (rfm, "rfm = fix"); | |
3821 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
3822 | strcpy (rat, "rat = "); | |
3823 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3824 | strcat (rat, "cr"); | |
3825 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3826 | strcat (rat, "ftn"); | |
3827 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3828 | strcat (rat, "prn"); | |
3829 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3830 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3831 | strcat (rat, ", blk"); | |
3832 | else | |
3833 | strcat (rat, "blk"); | |
3834 | return creat (name, 0, rfm, rat, mrs); | |
3835 | ||
3836 | case FAB$C_VFC: | |
3837 | strcpy (rfm, "rfm = vfc"); | |
3838 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
3839 | strcpy (rat, "rat = "); | |
3840 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3841 | strcat (rat, "cr"); | |
3842 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3843 | strcat (rat, "ftn"); | |
3844 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3845 | strcat (rat, "prn"); | |
3846 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3847 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3848 | strcat (rat, ", blk"); | |
3849 | else | |
3850 | strcat (rat, "blk"); | |
3851 | return creat (name, 0, rfm, rat, fsz); | |
3852 | ||
3853 | case FAB$C_STM: | |
3854 | strcpy (rfm, "rfm = stm"); | |
3855 | break; | |
3856 | ||
3857 | case FAB$C_STMCR: | |
3858 | strcpy (rfm, "rfm = stmcr"); | |
3859 | break; | |
3860 | ||
3861 | case FAB$C_STMLF: | |
3862 | strcpy (rfm, "rfm = stmlf"); | |
3863 | break; | |
3864 | ||
3865 | case FAB$C_UDF: | |
3866 | strcpy (rfm, "rfm = udf"); | |
3867 | break; | |
3868 | ||
3869 | case FAB$C_VAR: | |
3870 | strcpy (rfm, "rfm = var"); | |
3871 | break; | |
3872 | } | |
3873 | strcpy (rat, "rat = "); | |
3874 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3875 | strcat (rat, "cr"); | |
3876 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3877 | strcat (rat, "ftn"); | |
3878 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3879 | strcat (rat, "prn"); | |
3880 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3881 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3882 | strcat (rat, ", blk"); | |
3883 | else | |
3884 | strcat (rat, "blk"); | |
3885 | } | |
3886 | else | |
3887 | { | |
3888 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
3889 | strcpy (rat, "rat=cr"); | |
3890 | } | |
3891 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
3892 | mode 0 to get the user's default protection. */ | |
3893 | fd = creat (name, 0, rfm, rat); | |
3894 | if (fd < 0 && errno == EEXIST) | |
3895 | { | |
3896 | if (unlink (name) < 0) | |
3897 | report_file_error ("delete", build_string (name)); | |
3898 | fd = creat (name, 0, rfm, rat); | |
3899 | } | |
3900 | return fd; | |
3901 | } | |
3902 | #endif /* creat */ | |
3903 | ||
3904 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
3905 | sys_fwrite (ptr, size, num, fp) | |
3906 | register char * ptr; | |
3907 | FILE * fp; | |
3908 | { | |
3909 | register int tot = num * size; | |
3910 | ||
3911 | while (tot--) | |
3912 | fputc (*ptr++, fp); | |
3913 | } | |
3914 | ||
3915 | /* | |
3916 | * The VMS C library routine creat actually creates a new version of an | |
3917 | * existing file rather than truncating the old version. There are times | |
3918 | * when this is not the desired behavior, for instance, when writing an | |
3919 | * auto save file (you only want one version), or when you don't have | |
3920 | * write permission in the directory containing the file (but the file | |
3921 | * itself is writable). Hence this routine, which is equivalent to | |
3922 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
3923 | */ | |
3924 | int | |
3925 | vms_truncate (fn) | |
3926 | char *fn; | |
3927 | { | |
3928 | struct FAB xfab = cc$rms_fab; | |
3929 | struct RAB xrab = cc$rms_rab; | |
3930 | int status; | |
3931 | ||
3932 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
3933 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
3934 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
3935 | xfab.fab$l_fna = fn; | |
3936 | xfab.fab$b_fns = strlen (fn); | |
3937 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
3938 | xfab.fab$b_dns = 2; | |
3939 | xrab.rab$l_fab = &xfab; | |
3940 | ||
3941 | /* This gibberish opens the file, positions to the first record, and | |
3942 | deletes all records from there until the end of file. */ | |
986ffb24 | 3943 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 3944 | { |
986ffb24 JB |
3945 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
3946 | (SYS$FIND (&xrab) & 01) == 01 && | |
3947 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
3948 | status = 0; |
3949 | else | |
3950 | status = -1; | |
3951 | } | |
3952 | else | |
3953 | status = -1; | |
986ffb24 | 3954 | SYS$CLOSE (&xfab); |
86a5659e JB |
3955 | return status; |
3956 | } | |
3957 | ||
3958 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
3959 | SYSPRV or a readable SYSUAF.DAT. */ | |
3960 | ||
3961 | #ifdef READ_SYSUAF | |
3962 | /* | |
3963 | * getuaf.c | |
3964 | * | |
3965 | * Routine to read the VMS User Authorization File and return | |
3966 | * a specific user's record. | |
3967 | */ | |
3968 | ||
3969 | static struct UAF retuaf; | |
3970 | ||
3971 | struct UAF * | |
3972 | get_uaf_name (uname) | |
3973 | char * uname; | |
3974 | { | |
3975 | register status; | |
3976 | struct FAB uaf_fab; | |
3977 | struct RAB uaf_rab; | |
3978 | ||
3979 | uaf_fab = cc$rms_fab; | |
3980 | uaf_rab = cc$rms_rab; | |
3981 | /* initialize fab fields */ | |
3982 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
3983 | uaf_fab.fab$b_fns = 21; | |
3984 | uaf_fab.fab$b_fac = FAB$M_GET; | |
3985 | uaf_fab.fab$b_org = FAB$C_IDX; | |
3986 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
3987 | /* initialize rab fields */ | |
3988 | uaf_rab.rab$l_fab = &uaf_fab; | |
3989 | /* open the User Authorization File */ | |
986ffb24 | 3990 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
3991 | if (!(status&1)) |
3992 | { | |
3993 | errno = EVMSERR; | |
3994 | vaxc$errno = status; | |
3995 | return 0; | |
3996 | } | |
986ffb24 | 3997 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
3998 | if (!(status&1)) |
3999 | { | |
4000 | errno = EVMSERR; | |
4001 | vaxc$errno = status; | |
4002 | return 0; | |
4003 | } | |
4004 | /* read the requested record - index is in uname */ | |
4005 | uaf_rab.rab$l_kbf = uname; | |
4006 | uaf_rab.rab$b_ksz = strlen (uname); | |
4007 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4008 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4009 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4010 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4011 | if (!(status&1)) |
4012 | { | |
4013 | errno = EVMSERR; | |
4014 | vaxc$errno = status; | |
4015 | return 0; | |
4016 | } | |
4017 | /* close the User Authorization File */ | |
986ffb24 | 4018 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4019 | if (!(status&1)) |
4020 | { | |
4021 | errno = EVMSERR; | |
4022 | vaxc$errno = status; | |
4023 | return 0; | |
4024 | } | |
986ffb24 | 4025 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4026 | if (!(status&1)) |
4027 | { | |
4028 | errno = EVMSERR; | |
4029 | vaxc$errno = status; | |
4030 | return 0; | |
4031 | } | |
4032 | return &retuaf; | |
4033 | } | |
4034 | ||
4035 | struct UAF * | |
4036 | get_uaf_uic (uic) | |
4037 | unsigned long uic; | |
4038 | { | |
4039 | register status; | |
4040 | struct FAB uaf_fab; | |
4041 | struct RAB uaf_rab; | |
4042 | ||
4043 | uaf_fab = cc$rms_fab; | |
4044 | uaf_rab = cc$rms_rab; | |
4045 | /* initialize fab fields */ | |
4046 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4047 | uaf_fab.fab$b_fns = 21; | |
4048 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4049 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4050 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4051 | /* initialize rab fields */ | |
4052 | uaf_rab.rab$l_fab = &uaf_fab; | |
4053 | /* open the User Authorization File */ | |
986ffb24 | 4054 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4055 | if (!(status&1)) |
4056 | { | |
4057 | errno = EVMSERR; | |
4058 | vaxc$errno = status; | |
4059 | return 0; | |
4060 | } | |
986ffb24 | 4061 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4062 | if (!(status&1)) |
4063 | { | |
4064 | errno = EVMSERR; | |
4065 | vaxc$errno = status; | |
4066 | return 0; | |
4067 | } | |
4068 | /* read the requested record - index is in uic */ | |
4069 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4070 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4071 | uaf_rab.rab$b_ksz = sizeof uic; | |
4072 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4073 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4074 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4075 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4076 | if (!(status&1)) |
4077 | { | |
4078 | errno = EVMSERR; | |
4079 | vaxc$errno = status; | |
4080 | return 0; | |
4081 | } | |
4082 | /* close the User Authorization File */ | |
986ffb24 | 4083 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4084 | if (!(status&1)) |
4085 | { | |
4086 | errno = EVMSERR; | |
4087 | vaxc$errno = status; | |
4088 | return 0; | |
4089 | } | |
986ffb24 | 4090 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4091 | if (!(status&1)) |
4092 | { | |
4093 | errno = EVMSERR; | |
4094 | vaxc$errno = status; | |
4095 | return 0; | |
4096 | } | |
4097 | return &retuaf; | |
4098 | } | |
4099 | ||
4100 | static struct passwd retpw; | |
4101 | ||
4102 | struct passwd * | |
4103 | cnv_uaf_pw (up) | |
4104 | struct UAF * up; | |
4105 | { | |
4106 | char * ptr; | |
4107 | ||
4108 | /* copy these out first because if the username is 32 chars, the next | |
4109 | section will overwrite the first byte of the UIC */ | |
4110 | retpw.pw_uid = up->uaf$w_mem; | |
4111 | retpw.pw_gid = up->uaf$w_grp; | |
4112 | ||
4113 | /* I suppose this is not the best sytle, to possibly overwrite one | |
4114 | byte beyond the end of the field, but what the heck... */ | |
4115 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4116 | while (ptr[-1] == ' ') | |
4117 | ptr--; | |
4118 | *ptr = '\0'; | |
4119 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4120 | ||
4121 | /* the rest of these are counted ascii strings */ | |
4122 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4123 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4124 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4125 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4126 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4127 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4128 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4129 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4130 | ||
4131 | return &retpw; | |
4132 | } | |
4133 | #else /* not READ_SYSUAF */ | |
4134 | static struct passwd retpw; | |
4135 | #endif /* not READ_SYSUAF */ | |
4136 | ||
4137 | struct passwd * | |
4138 | getpwnam (name) | |
4139 | char * name; | |
4140 | { | |
4141 | #ifdef READ_SYSUAF | |
4142 | struct UAF *up; | |
4143 | #else | |
4144 | char * user; | |
4145 | char * dir; | |
4146 | unsigned char * full; | |
4147 | #endif /* READ_SYSUAF */ | |
4148 | char *ptr = name; | |
4149 | ||
4150 | while (*ptr) | |
4151 | { | |
4152 | if ('a' <= *ptr && *ptr <= 'z') | |
4153 | *ptr -= 040; | |
4154 | ptr++; | |
4155 | } | |
4156 | #ifdef READ_SYSUAF | |
4157 | if (!(up = get_uaf_name (name))) | |
4158 | return 0; | |
4159 | return cnv_uaf_pw (up); | |
4160 | #else | |
4161 | if (strcmp (name, getenv ("USER")) == 0) | |
4162 | { | |
4163 | retpw.pw_uid = getuid (); | |
4164 | retpw.pw_gid = getgid (); | |
4165 | strcpy (retpw.pw_name, name); | |
4166 | if (full = egetenv ("FULLNAME")) | |
4167 | strcpy (retpw.pw_gecos, full); | |
4168 | else | |
4169 | *retpw.pw_gecos = '\0'; | |
4170 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4171 | *retpw.pw_shell = '\0'; | |
4172 | return &retpw; | |
4173 | } | |
4174 | else | |
4175 | return 0; | |
4176 | #endif /* not READ_SYSUAF */ | |
4177 | } | |
4178 | ||
4179 | struct passwd * | |
4180 | getpwuid (uid) | |
4181 | unsigned long uid; | |
4182 | { | |
4183 | #ifdef READ_SYSUAF | |
4184 | struct UAF * up; | |
4185 | ||
4186 | if (!(up = get_uaf_uic (uid))) | |
4187 | return 0; | |
4188 | return cnv_uaf_pw (up); | |
4189 | #else | |
4190 | if (uid == sys_getuid ()) | |
4191 | return getpwnam (egetenv ("USER")); | |
4192 | else | |
4193 | return 0; | |
4194 | #endif /* not READ_SYSUAF */ | |
4195 | } | |
4196 | ||
4197 | /* return total address space available to the current process. This is | |
4198 | the sum of the current p0 size, p1 size and free page table entries | |
4199 | available. */ | |
4200 | vlimit () | |
4201 | { | |
4202 | int item_code; | |
4203 | unsigned long free_pages; | |
4204 | unsigned long frep0va; | |
4205 | unsigned long frep1va; | |
4206 | register status; | |
4207 | ||
4208 | item_code = JPI$_FREPTECNT; | |
4209 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4210 | { | |
4211 | errno = EVMSERR; | |
4212 | vaxc$errno = status; | |
4213 | return -1; | |
4214 | } | |
4215 | free_pages *= 512; | |
4216 | ||
4217 | item_code = JPI$_FREP0VA; | |
4218 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4219 | { | |
4220 | errno = EVMSERR; | |
4221 | vaxc$errno = status; | |
4222 | return -1; | |
4223 | } | |
4224 | item_code = JPI$_FREP1VA; | |
4225 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4226 | { | |
4227 | errno = EVMSERR; | |
4228 | vaxc$errno = status; | |
4229 | return -1; | |
4230 | } | |
4231 | ||
4232 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4233 | } | |
4234 | ||
4235 | define_logical_name (varname, string) | |
4236 | char *varname; | |
4237 | char *string; | |
4238 | { | |
4239 | struct dsc$descriptor_s strdsc = | |
4240 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4241 | struct dsc$descriptor_s envdsc = | |
4242 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4243 | struct dsc$descriptor_s lnmdsc = | |
4244 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4245 | ||
4246 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4247 | } | |
4248 | ||
4249 | delete_logical_name (varname) | |
4250 | char *varname; | |
4251 | { | |
4252 | struct dsc$descriptor_s envdsc = | |
4253 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4254 | struct dsc$descriptor_s lnmdsc = | |
4255 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4256 | ||
4257 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4258 | } | |
4259 | ||
4260 | ulimit () | |
4261 | {} | |
4262 | ||
86a5659e JB |
4263 | setpgrp () |
4264 | {} | |
4265 | ||
4266 | execvp () | |
4267 | { | |
4268 | error ("execvp system call not implemented"); | |
4269 | } | |
4270 | ||
4271 | int | |
4272 | rename (from, to) | |
4273 | char *from, *to; | |
4274 | { | |
4275 | int status; | |
4276 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4277 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4278 | char from_esn[NAM$C_MAXRSS]; | |
4279 | char to_esn[NAM$C_MAXRSS]; | |
4280 | ||
4281 | from_fab.fab$l_fna = from; | |
4282 | from_fab.fab$b_fns = strlen (from); | |
4283 | from_fab.fab$l_nam = &from_nam; | |
4284 | from_fab.fab$l_fop = FAB$M_NAM; | |
4285 | ||
4286 | from_nam.nam$l_esa = from_esn; | |
4287 | from_nam.nam$b_ess = sizeof from_esn; | |
4288 | ||
4289 | to_fab.fab$l_fna = to; | |
4290 | to_fab.fab$b_fns = strlen (to); | |
4291 | to_fab.fab$l_nam = &to_nam; | |
4292 | to_fab.fab$l_fop = FAB$M_NAM; | |
4293 | ||
4294 | to_nam.nam$l_esa = to_esn; | |
4295 | to_nam.nam$b_ess = sizeof to_esn; | |
4296 | ||
4297 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4298 | ||
4299 | if (status & 1) | |
4300 | return 0; | |
4301 | else | |
4302 | { | |
4303 | if (status == RMS$_DEV) | |
4304 | errno = EXDEV; | |
4305 | else | |
4306 | errno = EVMSERR; | |
4307 | vaxc$errno = status; | |
4308 | return -1; | |
4309 | } | |
4310 | } | |
4311 | ||
4312 | /* This function renames a file like `rename', but it strips | |
4313 | the version number from the "to" filename, such that the "to" file is | |
4314 | will always be a new version. It also sets the file protection once it is | |
4315 | finished. The protection that we will use is stored in fab_final_pro, | |
4316 | and was set when we did a creat_copy_attrs to create the file that we | |
4317 | are renaming. | |
4318 | ||
4319 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4320 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4321 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4322 | the W and D bits together. */ | |
4323 | ||
4324 | ||
4325 | static struct fibdef fib; /* We need this initialized to zero */ | |
4326 | char vms_file_written[NAM$C_MAXRSS]; | |
4327 | ||
4328 | int | |
4329 | rename_sans_version (from,to) | |
4330 | char *from, *to; | |
4331 | { | |
4332 | short int chan; | |
4333 | int stat; | |
4334 | short int iosb[4]; | |
4335 | int status; | |
4336 | struct FAB to_fab = cc$rms_fab; | |
4337 | struct NAM to_nam = cc$rms_nam; | |
4338 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4339 | struct dsc$descriptor fib_attr[2] | |
4340 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4341 | char to_esn[NAM$C_MAXRSS]; | |
4342 | ||
4343 | $DESCRIPTOR (disk,to_esn); | |
4344 | ||
4345 | to_fab.fab$l_fna = to; | |
4346 | to_fab.fab$b_fns = strlen (to); | |
4347 | to_fab.fab$l_nam = &to_nam; | |
4348 | to_fab.fab$l_fop = FAB$M_NAM; | |
4349 | ||
4350 | to_nam.nam$l_esa = to_esn; | |
4351 | to_nam.nam$b_ess = sizeof to_esn; | |
4352 | ||
4353 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4354 | ||
4355 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4356 | *(to_nam.nam$l_ver) = '\0'; | |
4357 | ||
4358 | stat = rename (from, to_esn); | |
4359 | if (stat < 0) | |
4360 | return stat; | |
4361 | ||
4362 | strcpy (vms_file_written, to_esn); | |
4363 | ||
4364 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4365 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4366 | ||
4367 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4368 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4369 | |
4370 | /* Copy these fields into the fib */ | |
4371 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4372 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4373 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4374 | ||
986ffb24 | 4375 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4376 | |
986ffb24 | 4377 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4378 | if (!stat) |
986ffb24 JB |
4379 | LIB$SIGNAL (stat); |
4380 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4381 | 0, 0, 0, &fib_attr, 0); |
4382 | if (!stat) | |
986ffb24 JB |
4383 | LIB$SIGNAL (stat); |
4384 | stat = SYS$DASSGN (chan); | |
86a5659e | 4385 | if (!stat) |
986ffb24 | 4386 | LIB$SIGNAL (stat); |
0137dbf7 | 4387 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4388 | return 0; |
4389 | } | |
4390 | ||
4391 | link (file, new) | |
4392 | char * file, * new; | |
4393 | { | |
4394 | register status; | |
4395 | struct FAB fab; | |
4396 | struct NAM nam; | |
4397 | unsigned short fid[3]; | |
4398 | char esa[NAM$C_MAXRSS]; | |
4399 | ||
4400 | fab = cc$rms_fab; | |
4401 | fab.fab$l_fop = FAB$M_OFP; | |
4402 | fab.fab$l_fna = file; | |
4403 | fab.fab$b_fns = strlen (file); | |
4404 | fab.fab$l_nam = &nam; | |
4405 | ||
4406 | nam = cc$rms_nam; | |
4407 | nam.nam$l_esa = esa; | |
4408 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4409 | ||
4410 | status = SYS$PARSE (&fab); | |
4411 | if ((status & 1) == 0) | |
4412 | { | |
4413 | errno = EVMSERR; | |
4414 | vaxc$errno = status; | |
4415 | return -1; | |
4416 | } | |
4417 | status = SYS$SEARCH (&fab); | |
4418 | if ((status & 1) == 0) | |
4419 | { | |
4420 | errno = EVMSERR; | |
4421 | vaxc$errno = status; | |
4422 | return -1; | |
4423 | } | |
4424 | ||
4425 | fid[0] = nam.nam$w_fid[0]; | |
4426 | fid[1] = nam.nam$w_fid[1]; | |
4427 | fid[2] = nam.nam$w_fid[2]; | |
4428 | ||
4429 | fab.fab$l_fna = new; | |
4430 | fab.fab$b_fns = strlen (new); | |
4431 | ||
4432 | status = SYS$PARSE (&fab); | |
4433 | if ((status & 1) == 0) | |
4434 | { | |
4435 | errno = EVMSERR; | |
4436 | vaxc$errno = status; | |
4437 | return -1; | |
4438 | } | |
4439 | ||
4440 | nam.nam$w_fid[0] = fid[0]; | |
4441 | nam.nam$w_fid[1] = fid[1]; | |
4442 | nam.nam$w_fid[2] = fid[2]; | |
4443 | ||
4444 | nam.nam$l_esa = nam.nam$l_name; | |
4445 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
4446 | ||
4447 | status = SYS$ENTER (&fab); | |
4448 | if ((status & 1) == 0) | |
4449 | { | |
4450 | errno = EVMSERR; | |
4451 | vaxc$errno = status; | |
4452 | return -1; | |
4453 | } | |
4454 | ||
4455 | return 0; | |
4456 | } | |
4457 | ||
4458 | croak (badfunc) | |
4459 | char *badfunc; | |
4460 | { | |
4461 | printf ("%s not yet implemented\r\n", badfunc); | |
4462 | reset_sys_modes (); | |
4463 | exit (1); | |
4464 | } | |
4465 | ||
4466 | long | |
4467 | random () | |
4468 | { | |
4469 | /* Arrange to return a range centered on zero. */ | |
4470 | return rand () - (1 << 30); | |
4471 | } | |
4472 | ||
4473 | srandom (seed) | |
4474 | { | |
4475 | srand (seed); | |
4476 | } | |
4477 | #endif /* VMS */ | |
4478 | \f | |
4479 | #ifdef AIX | |
4480 | ||
4481 | /* Called from init_sys_modes. */ | |
4482 | hft_init () | |
4483 | { | |
4484 | int junk; | |
4485 | ||
4486 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
4487 | if we are on an HFT by trying to get an HFT error code. If this | |
4488 | call fails, we're not on an HFT. */ | |
4489 | #ifdef IBMR2AIX | |
4490 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4491 | return; | |
4492 | #else /* not IBMR2AIX */ | |
4493 | if (ioctl (0, HFQEIO, 0) < 0) | |
4494 | return; | |
4495 | #endif /* not IBMR2AIX */ | |
4496 | ||
4497 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
4498 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
4499 | there's no way to determine the old mapping, so in reset_sys_modes | |
4500 | we need to assume that the normal map had been present. Of course, this | |
4501 | code also doesn't help if on a terminal emulator which doesn't understand | |
4502 | HFT VTD's. */ | |
4503 | { | |
4504 | struct hfbuf buf; | |
4505 | struct hfkeymap keymap; | |
4506 | ||
4507 | buf.hf_bufp = (char *)&keymap; | |
4508 | buf.hf_buflen = sizeof (keymap); | |
4509 | keymap.hf_nkeys = 2; | |
4510 | keymap.hfkey[0].hf_kpos = 15; | |
4511 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4512 | #ifdef IBMR2AIX | |
4513 | keymap.hfkey[0].hf_keyidh = '<'; | |
4514 | #else /* not IBMR2AIX */ | |
4515 | keymap.hfkey[0].hf_page = '<'; | |
4516 | #endif /* not IBMR2AIX */ | |
4517 | keymap.hfkey[0].hf_char = 127; | |
4518 | keymap.hfkey[1].hf_kpos = 15; | |
4519 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4520 | #ifdef IBMR2AIX | |
4521 | keymap.hfkey[1].hf_keyidh = '<'; | |
4522 | #else /* not IBMR2AIX */ | |
4523 | keymap.hfkey[1].hf_page = '<'; | |
4524 | #endif /* not IBMR2AIX */ | |
4525 | keymap.hfkey[1].hf_char = 127; | |
4526 | hftctl (0, HFSKBD, &buf); | |
4527 | } | |
4528 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
4529 | at times. */ | |
4530 | line_ins_del_ok = char_ins_del_ok = 0; | |
4531 | } | |
4532 | ||
4533 | /* Reset the rubout key to backspace. */ | |
4534 | ||
4535 | hft_reset () | |
4536 | { | |
4537 | struct hfbuf buf; | |
4538 | struct hfkeymap keymap; | |
4539 | int junk; | |
4540 | ||
4541 | #ifdef IBMR2AIX | |
4542 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4543 | return; | |
4544 | #else /* not IBMR2AIX */ | |
4545 | if (ioctl (0, HFQEIO, 0) < 0) | |
4546 | return; | |
4547 | #endif /* not IBMR2AIX */ | |
4548 | ||
4549 | buf.hf_bufp = (char *)&keymap; | |
4550 | buf.hf_buflen = sizeof (keymap); | |
4551 | keymap.hf_nkeys = 2; | |
4552 | keymap.hfkey[0].hf_kpos = 15; | |
4553 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4554 | #ifdef IBMR2AIX | |
4555 | keymap.hfkey[0].hf_keyidh = '<'; | |
4556 | #else /* not IBMR2AIX */ | |
4557 | keymap.hfkey[0].hf_page = '<'; | |
4558 | #endif /* not IBMR2AIX */ | |
4559 | keymap.hfkey[0].hf_char = 8; | |
4560 | keymap.hfkey[1].hf_kpos = 15; | |
4561 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4562 | #ifdef IBMR2AIX | |
4563 | keymap.hfkey[1].hf_keyidh = '<'; | |
4564 | #else /* not IBMR2AIX */ | |
4565 | keymap.hfkey[1].hf_page = '<'; | |
4566 | #endif /* not IBMR2AIX */ | |
4567 | keymap.hfkey[1].hf_char = 8; | |
4568 | hftctl (0, HFSKBD, &buf); | |
4569 | } | |
4570 | ||
4571 | #endif /* AIX */ |