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 | ||
107 | /* Get DGUX definition for FASYNC - DJB */ | |
108 | #ifdef DGUX | |
109 | #include <sys/file.h> | |
110 | #endif /* DGUX */ | |
111 | ||
112 | #include <sys/ioctl.h> | |
e04a4e0d | 113 | #include "systty.h" |
86a5659e JB |
114 | |
115 | #ifdef BSD | |
116 | #ifdef BSD4_1 | |
117 | #include <wait.h> | |
118 | #else /* not 4.1 */ | |
119 | #include <sys/wait.h> | |
120 | #endif /* not 4.1 */ | |
121 | #endif /* BSD */ | |
122 | ||
86a5659e JB |
123 | #ifdef BROKEN_TIOCGWINSZ |
124 | #undef TIOCGWINSZ | |
125 | #endif | |
126 | ||
86a5659e JB |
127 | #ifdef USG |
128 | #include <sys/utsname.h> | |
129 | #include <string.h> | |
130 | #ifndef MEMORY_IN_STRING_H | |
131 | #include <memory.h> | |
132 | #endif | |
133 | #ifdef TIOCGWINSZ | |
134 | #ifdef NEED_SIOCTL | |
135 | #include <sys/sioctl.h> | |
136 | #endif | |
137 | #ifdef NEED_PTEM_H | |
138 | #include <sys/stream.h> | |
139 | #include <sys/ptem.h> | |
140 | #endif | |
141 | #endif /* TIOCGWINSZ */ | |
86a5659e JB |
142 | #endif /* USG */ |
143 | ||
86a5659e JB |
144 | extern int quit_char; |
145 | ||
0137dbf7 | 146 | #include "frame.h" |
86a5659e JB |
147 | #include "window.h" |
148 | #include "termhooks.h" | |
149 | #include "termchar.h" | |
150 | #include "termopts.h" | |
151 | #include "dispextern.h" | |
152 | #include "process.h" | |
153 | ||
154 | #ifdef NONSYSTEM_DIR_LIBRARY | |
155 | #include "ndir.h" | |
156 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
157 | ||
91bac16a JB |
158 | #include "syssignal.h" |
159 | #include "systime.h" | |
86a5659e JB |
160 | |
161 | static int baud_convert[] = | |
162 | #ifdef BAUD_CONVERT | |
163 | BAUD_CONVERT; | |
164 | #else | |
165 | { | |
166 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
167 | 1800, 2400, 4800, 9600, 19200, 38400 | |
168 | }; | |
169 | #endif | |
170 | ||
171 | extern short ospeed; | |
172 | ||
91bac16a JB |
173 | /* The file descriptor for Emacs's input terminal. |
174 | Under Unix, this is always left zero; | |
175 | under VMS, we place the input channel number here. | |
176 | This allows us to write more code that works for both VMS and Unix. */ | |
177 | static int input_fd; | |
178 | ||
86a5659e JB |
179 | discard_tty_input () |
180 | { | |
91bac16a | 181 | struct emacs_tty buf; |
86a5659e JB |
182 | |
183 | if (noninteractive) | |
184 | return; | |
185 | ||
186 | /* Discarding input is not safe when the input could contain | |
187 | replies from the X server. So don't do it. */ | |
188 | if (read_socket_hook) | |
189 | return; | |
190 | ||
191 | #ifdef VMS | |
192 | end_kbd_input (); | |
91bac16a JB |
193 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
194 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
195 | queue_kbd_input (); |
196 | #else /* not VMS */ | |
197 | #ifdef APOLLO | |
198 | { | |
199 | int zero = 0; | |
200 | ioctl (0, TIOCFLUSH, &zero); | |
201 | } | |
202 | #else /* not Apollo */ | |
91bac16a JB |
203 | EMACS_GET_TTY (input_fd, &buf); |
204 | EMACS_SET_TTY (input_fd, &buf, 0); | |
86a5659e JB |
205 | #endif /* not Apollo */ |
206 | #endif /* not VMS */ | |
207 | } | |
208 | ||
209 | #ifdef SIGTSTP | |
210 | ||
211 | stuff_char (c) | |
212 | char c; | |
213 | { | |
214 | /* Should perhaps error if in batch mode */ | |
215 | #ifdef TIOCSTI | |
216 | ioctl (0, TIOCSTI, &c); | |
217 | #else /* no TIOCSTI */ | |
218 | error ("Cannot stuff terminal input characters in this version of Unix."); | |
219 | #endif /* no TIOCSTI */ | |
220 | } | |
221 | ||
222 | #endif /* SIGTSTP */ | |
223 | ||
224 | init_baud_rate () | |
225 | { | |
86a5659e JB |
226 | if (noninteractive) |
227 | ospeed = 0; | |
228 | else | |
229 | { | |
230 | #ifdef VMS | |
91bac16a JB |
231 | struct sensemode sg; |
232 | ||
233 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 234 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
235 | ospeed = sg.xmit_baud; |
236 | #else /* not VMS */ | |
e04a4e0d JB |
237 | #ifdef HAVE_TERMIOS |
238 | struct termios sg; | |
91bac16a JB |
239 | |
240 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | B9600; | |
241 | tcgetattr (0, &sg); | |
242 | ospeed = sg.c_cflag & CBAUD; | |
e04a4e0d JB |
243 | #else /* neither VMS nor TERMIOS */ |
244 | #ifdef HAVE_TERMIO | |
245 | struct termio sg; | |
91bac16a JB |
246 | |
247 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | B9600; | |
e04a4e0d | 248 | #ifdef HAVE_TCATTR |
86a5659e | 249 | tcgetattr (0, &sg); |
e04a4e0d | 250 | #else |
6c65530f | 251 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 252 | #endif |
91bac16a | 253 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 254 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
255 | struct sgttyb sg; |
256 | ||
257 | sg.sg_ospeed = B9600; | |
258 | ioctl (0, TIOCGETP, &sg); | |
259 | ospeed = sg.sg_ospeed; | |
91bac16a | 260 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 261 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 262 | #endif /* not VMS */ |
86a5659e JB |
263 | } |
264 | ||
265 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
266 | ? baud_convert[ospeed] : 9600); | |
267 | if (baud_rate == 0) | |
268 | baud_rate = 1200; | |
269 | } | |
270 | ||
271 | /*ARGSUSED*/ | |
272 | set_exclusive_use (fd) | |
273 | int fd; | |
274 | { | |
275 | #ifdef FIOCLEX | |
276 | ioctl (fd, FIOCLEX, 0); | |
277 | #endif | |
278 | /* Ok to do nothing if this feature does not exist */ | |
279 | } | |
280 | ||
281 | #ifndef subprocesses | |
282 | ||
283 | wait_without_blocking () | |
284 | { | |
285 | #ifdef BSD | |
286 | wait3 (0, WNOHANG | WUNTRACED, 0); | |
287 | #else | |
288 | croak ("wait_without_blocking"); | |
289 | #endif | |
290 | synch_process_alive = 0; | |
291 | } | |
292 | ||
293 | #endif /* not subprocesses */ | |
294 | ||
295 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
296 | (at least for bsd). */ | |
297 | ||
298 | SIGTYPE | |
299 | wait_for_termination_signal () | |
300 | {} | |
301 | ||
302 | /* Wait for subprocess with process id `pid' to terminate and | |
303 | make sure it will get eliminated (not remain forever as a zombie) */ | |
304 | ||
305 | wait_for_termination (pid) | |
306 | int pid; | |
307 | { | |
308 | while (1) | |
309 | { | |
310 | #ifdef subprocesses | |
311 | #ifdef VMS | |
312 | int status; | |
313 | ||
986ffb24 | 314 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
315 | break; |
316 | #else /* not VMS */ | |
280073d7 | 317 | #if (defined (BSD) && !defined (LINUX)) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
318 | /* Note that kill returns -1 even if the process is just a zombie now. |
319 | But inevitably a SIGCHLD interrupt should be generated | |
320 | and child_sig will do wait3 and make the process go away. */ | |
321 | /* There is some indication that there is a bug involved with | |
322 | termination of subprocesses, perhaps involving a kernel bug too, | |
323 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
324 | if that causes the problem to go away or get worse. */ | |
325 | sigsetmask (sigmask (SIGCHLD)); | |
326 | if (0 > kill (pid, 0)) | |
327 | { | |
328 | sigsetmask (SIGEMPTYMASK); | |
329 | kill (getpid (), SIGCHLD); | |
330 | break; | |
331 | } | |
332 | if (wait_debugging) | |
333 | sleep (1); | |
334 | else | |
335 | sigpause (SIGEMPTYMASK); | |
280073d7 | 336 | #else /* not BSD, not LINUX, and not HPUX version >= 6 */ |
5f3461a5 | 337 | #if defined (UNIPLUS) || defined (LINUX) |
4c8975ad RS |
338 | if (0 > kill (pid, 0)) |
339 | break; | |
340 | wait (0); | |
5f3461a5 | 341 | #else /* neither BSD nor UNIPLUS nor LINUX: random sysV */ |
4c8975ad RS |
342 | #ifdef HAVE_SYSV_SIGPAUSE |
343 | sighold (SIGCHLD); | |
344 | if (0 > kill (pid, 0)) | |
345 | { | |
346 | sigrelse (SIGCHLD); | |
347 | break; | |
348 | } | |
349 | sigpause (SIGCHLD); | |
350 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
351 | if (0 > kill (pid, 0)) | |
86a5659e | 352 | break; |
4c8975ad RS |
353 | /* Using sleep instead of pause avoids timing error. |
354 | If the inferior dies just before the sleep, | |
355 | we lose just one second. */ | |
356 | sleep (1); | |
357 | #endif /* not HAVE_SYSV_SIGPAUSE */ | |
358 | #endif /* not UNIPLUS */ | |
359 | #endif /* not BSD, and not HPUX version >= 6 */ | |
86a5659e JB |
360 | #endif /* not VMS */ |
361 | #else /* not subprocesses */ | |
362 | #ifndef BSD4_1 | |
363 | if (kill (pid, 0) < 0) | |
364 | break; | |
365 | wait (0); | |
366 | #else /* BSD4_1 */ | |
367 | int status; | |
368 | status = wait (0); | |
369 | if (status == pid || status == -1) | |
370 | break; | |
371 | #endif /* BSD4_1 */ | |
372 | #endif /* not subprocesses */ | |
373 | } | |
374 | } | |
375 | ||
376 | #ifdef subprocesses | |
377 | ||
378 | /* | |
379 | * flush any pending output | |
380 | * (may flush input as well; it does not matter the way we use it) | |
381 | */ | |
382 | ||
383 | flush_pending_output (channel) | |
384 | int channel; | |
385 | { | |
386 | #ifdef HAVE_TERMIOS | |
387 | /* If we try this, we get hit with SIGTTIN, because | |
388 | the child's tty belongs to the child's pgrp. */ | |
389 | #else | |
390 | #ifdef TCFLSH | |
391 | ioctl (channel, TCFLSH, 1); | |
392 | #else | |
393 | #ifdef TIOCFLUSH | |
394 | int zero = 0; | |
395 | /* 3rd arg should be ignored | |
396 | but some 4.2 kernels actually want the address of an int | |
397 | and nonzero means something different. */ | |
398 | ioctl (channel, TIOCFLUSH, &zero); | |
399 | #endif | |
400 | #endif | |
401 | #endif | |
402 | } | |
403 | ||
404 | #ifndef VMS | |
405 | /* Set up the terminal at the other end of a pseudo-terminal that | |
406 | we will be controlling an inferior through. | |
407 | It should not echo or do line-editing, since that is done | |
408 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
409 | ||
410 | child_setup_tty (out) | |
411 | int out; | |
412 | { | |
91bac16a JB |
413 | struct emacs_tty s; |
414 | ||
415 | EMACS_GET_TTY (out, &s); | |
86a5659e | 416 | |
31be8d24 | 417 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
418 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
419 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
420 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); | |
421 | /* No output delays */ | |
422 | s.main.c_lflag &= ~ECHO; /* Disable echo */ | |
423 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
424 | s.main.c_iflag &= ~IUCLC; /* Disable map of upper case to lower on | |
425 | input */ | |
426 | s.main.c_oflag &= ~OLCUC; /* Disable map of lower case to upper on | |
427 | output */ | |
428 | #if 0 | |
429 | /* Said to be unnecesary: */ | |
430 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ | |
431 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
432 | #endif | |
433 | ||
434 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
435 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
436 | s.main.c_cc[VERASE] = 0377; /* disable erase processing */ | |
437 | s.main.c_cc[VKILL] = 0377; /* disable kill processing */ | |
438 | ||
86a5659e | 439 | #ifdef HPUX |
91bac16a | 440 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 441 | #endif /* HPUX */ |
91bac16a | 442 | |
86a5659e JB |
443 | #ifdef AIX |
444 | /* AIX enhanced edit loses NULs, so disable it */ | |
445 | #ifndef IBMR2AIX | |
91bac16a JB |
446 | s.main.c_line = 0; |
447 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
448 | #endif |
449 | /* Also, PTY overloads NUL and BREAK. | |
450 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
451 | s.main.c_iflag &= ~IGNBRK; |
452 | s.main.c_iflag &= ~BRKINT; | |
453 | /* QUIT and INTR work better as signals, so disable character forms */ | |
454 | s.main.c_cc[VQUIT] = 0377; | |
455 | s.main.c_cc[VINTR] = 0377; | |
456 | s.main.c_cc[VEOL] = 0377; | |
457 | s.main.c_lflag &= ~ISIG; | |
458 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ | |
86a5659e JB |
459 | #endif /* AIX */ |
460 | ||
461 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
462 | |
463 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
464 | | CBREAK | TANDEM); | |
465 | s.main.sg_erase = 0377; | |
466 | s.main.sg_kill = 0377; | |
467 | ||
86a5659e JB |
468 | #endif /* not HAVE_TERMIO */ |
469 | ||
91bac16a | 470 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
471 | |
472 | #ifdef BSD4_1 | |
473 | if (interrupt_input) | |
474 | reset_sigio (); | |
475 | #endif /* BSD4_1 */ | |
476 | #ifdef RTU | |
477 | { | |
478 | int zero = 0; | |
479 | ioctl (out, FIOASYNC, &zero); | |
480 | } | |
481 | #endif /* RTU */ | |
482 | } | |
483 | #endif /* not VMS */ | |
484 | ||
485 | #endif /* subprocesses */ | |
486 | ||
487 | /*ARGSUSED*/ | |
488 | setpgrp_of_tty (pid) | |
489 | int pid; | |
490 | { | |
ffd56f97 | 491 | EMACS_SET_TTY_PGRP (input_fd, &pid); |
86a5659e JB |
492 | } |
493 | ||
494 | /* Record a signal code and the handler for it. */ | |
495 | struct save_signal | |
496 | { | |
497 | int code; | |
498 | SIGTYPE (*handler) (); | |
499 | }; | |
500 | ||
501 | /* Suspend the Emacs process; give terminal to its superior. */ | |
502 | ||
503 | sys_suspend () | |
504 | { | |
505 | #ifdef VMS | |
88191e36 RS |
506 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
507 | to the current emacs as a cheaper than starting a whole new process. This | |
508 | is set up by KEPTEDITOR.COM. */ | |
509 | unsigned long parent_id, foster_parent_id; | |
510 | char *fpid_string; | |
511 | ||
512 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
513 | if (fpid_string != NULL) | |
514 | { | |
515 | sscanf (fpid_string, "%x", &foster_parent_id); | |
516 | if (foster_parent_id != 0) | |
517 | parent_id = foster_parent_id; | |
518 | else | |
519 | parent_id = getppid (); | |
520 | } | |
521 | else | |
522 | parent_id = getppid (); | |
523 | ||
9ac0d9e0 | 524 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 525 | |
86a5659e JB |
526 | if (parent_id && parent_id != 0xffffffff) |
527 | { | |
528 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
529 | int status = LIB$ATTACH (&parent_id) & 1; | |
530 | signal (SIGINT, oldsig); | |
531 | return status; | |
532 | } | |
533 | else | |
534 | { | |
535 | struct { | |
536 | int l; | |
537 | char *a; | |
538 | } d_prompt; | |
539 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
540 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 541 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
542 | return 1; |
543 | } | |
544 | return -1; | |
545 | #else | |
546 | #ifdef SIGTSTP | |
547 | ||
91bac16a | 548 | EMACS_KILLPG (getpgrp (0), SIGTSTP); |
86a5659e JB |
549 | |
550 | #else /* No SIGTSTP */ | |
551 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
552 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
553 | kill (getpid (), SIGQUIT); | |
554 | ||
555 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
556 | ||
557 | /* On a system where suspending is not implemented, | |
558 | instead fork a subshell and let it talk directly to the terminal | |
559 | while we wait. */ | |
560 | int pid = fork (); | |
561 | struct save_signal saved_handlers[5]; | |
562 | ||
563 | saved_handlers[0].code = SIGINT; | |
564 | saved_handlers[1].code = SIGQUIT; | |
565 | saved_handlers[2].code = SIGTERM; | |
566 | #ifdef SIGIO | |
567 | saved_handlers[3].code = SIGIO; | |
568 | saved_handlers[4].code = 0; | |
569 | #else | |
570 | saved_handlers[3].code = 0; | |
571 | #endif | |
572 | ||
573 | if (pid == -1) | |
574 | error ("Can't spawn subshell"); | |
575 | if (pid == 0) | |
576 | { | |
577 | char *sh; | |
578 | ||
579 | sh = (char *) egetenv ("SHELL"); | |
580 | if (sh == 0) | |
581 | sh = "sh"; | |
582 | /* Use our buffer's default directory for the subshell. */ | |
583 | { | |
584 | Lisp_Object dir; | |
585 | unsigned char *str; | |
586 | int len; | |
587 | ||
588 | /* mentioning current_buffer->buffer would mean including buffer.h, | |
589 | which somehow wedges the hp compiler. So instead... */ | |
590 | ||
591 | dir = intern ("default-directory"); | |
592 | /* Can't use NULL */ | |
593 | if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil)) | |
594 | goto xyzzy; | |
595 | dir = Fsymbol_value (dir); | |
596 | if (XTYPE (dir) != Lisp_String) | |
597 | goto xyzzy; | |
598 | ||
599 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
600 | len = XSTRING (dir)->size; | |
601 | bcopy (XSTRING (dir)->data, str, len); | |
602 | if (str[len - 1] != '/') str[len++] = '/'; | |
603 | str[len] = 0; | |
604 | chdir (str); | |
605 | } | |
606 | xyzzy: | |
607 | #ifdef subprocesses | |
608 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
609 | #endif | |
1593c2fe JB |
610 | |
611 | #ifdef PRIO_PROCESS | |
612 | { | |
613 | extern int emacs_priority; | |
614 | ||
615 | if (emacs_priority) | |
616 | nice (-emacs_priority); | |
617 | } | |
618 | #endif | |
619 | ||
86a5659e JB |
620 | execlp (sh, sh, 0); |
621 | write (1, "Can't execute subshell", 22); | |
622 | _exit (1); | |
623 | } | |
624 | ||
625 | save_signal_handlers (saved_handlers); | |
ffafc793 | 626 | synch_process_alive = 1; |
86a5659e JB |
627 | wait_for_termination (pid); |
628 | restore_signal_handlers (saved_handlers); | |
629 | ||
630 | #endif /* no USG_JOBCTRL */ | |
631 | #endif /* no SIGTSTP */ | |
632 | #endif /* not VMS */ | |
633 | } | |
634 | ||
635 | save_signal_handlers (saved_handlers) | |
636 | struct save_signal *saved_handlers; | |
637 | { | |
638 | while (saved_handlers->code) | |
639 | { | |
508b171c JA |
640 | saved_handlers->handler |
641 | = (SIGTYPE (*) ()) signal (saved_handlers->code, SIG_IGN); | |
86a5659e JB |
642 | saved_handlers++; |
643 | } | |
644 | } | |
645 | ||
646 | restore_signal_handlers (saved_handlers) | |
647 | struct save_signal *saved_handlers; | |
648 | { | |
649 | while (saved_handlers->code) | |
650 | { | |
651 | signal (saved_handlers->code, saved_handlers->handler); | |
652 | saved_handlers++; | |
653 | } | |
654 | } | |
655 | \f | |
656 | #ifdef F_SETFL | |
657 | ||
658 | int old_fcntl_flags; | |
659 | ||
660 | init_sigio () | |
661 | { | |
662 | #ifdef FASYNC | |
663 | old_fcntl_flags = fcntl (0, F_GETFL, 0) & ~FASYNC; | |
664 | #endif | |
665 | request_sigio (); | |
666 | } | |
667 | ||
668 | reset_sigio () | |
669 | { | |
670 | unrequest_sigio (); | |
671 | } | |
672 | ||
673 | #ifdef FASYNC /* F_SETFL does not imply existance of FASYNC */ | |
674 | ||
675 | request_sigio () | |
676 | { | |
677 | #ifdef SIGWINCH | |
e065a56e | 678 | sigunblock (sigmask (SIGWINCH)); |
86a5659e JB |
679 | #endif |
680 | fcntl (0, F_SETFL, old_fcntl_flags | FASYNC); | |
681 | ||
682 | interrupts_deferred = 0; | |
683 | } | |
684 | ||
685 | unrequest_sigio () | |
686 | { | |
687 | #ifdef SIGWINCH | |
e065a56e | 688 | sigblock (sigmask (SIGWINCH)); |
86a5659e JB |
689 | #endif |
690 | fcntl (0, F_SETFL, old_fcntl_flags); | |
691 | interrupts_deferred = 1; | |
692 | } | |
693 | ||
694 | #else /* no FASYNC */ | |
695 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
696 | ||
697 | request_sigio () | |
698 | { | |
699 | int on = 1; | |
700 | ioctl (0, FIOASYNC, &on); | |
701 | interrupts_deferred = 0; | |
702 | } | |
703 | ||
704 | unrequest_sigio () | |
705 | { | |
706 | int off = 0; | |
707 | ||
708 | ioctl (0, FIOASYNC, &off); | |
709 | interrupts_deferred = 1; | |
710 | } | |
711 | ||
712 | #else /* not FASYNC, not STRIDE */ | |
713 | ||
714 | request_sigio () | |
715 | { | |
716 | croak ("request_sigio"); | |
717 | } | |
718 | ||
719 | unrequest_sigio () | |
720 | { | |
721 | croak ("unrequest_sigio"); | |
722 | } | |
723 | ||
724 | #endif /* STRIDE */ | |
725 | #endif /* FASYNC */ | |
726 | #endif /* F_SETFL */ | |
727 | \f | |
68936329 JB |
728 | /* Getting and setting emacs_tty structures. */ |
729 | ||
730 | /* Set *TC to the parameters associated with the terminal FD. | |
731 | Return zero if all's well, or -1 if we ran into an error we | |
732 | couldn't deal with. */ | |
733 | int | |
734 | emacs_get_tty (fd, settings) | |
735 | int fd; | |
736 | struct emacs_tty *settings; | |
737 | { | |
738 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
739 | #ifdef HAVE_TCATTR | |
740 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
741 | if (tcgetattr (fd, &settings->main) < 0) | |
742 | return -1; | |
743 | ||
744 | #else | |
745 | #ifdef HAVE_TERMIO | |
746 | /* The SYSV-style interface? */ | |
747 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
748 | return -1; | |
749 | ||
750 | #else | |
751 | #ifdef VMS | |
752 | /* Vehemently Monstrous System? :-) */ | |
753 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
754 | &settings->main.class, 12, 0, 0, 0, 0) | |
755 | & 1)) | |
756 | return -1; | |
757 | ||
758 | #else | |
759 | /* I give up - I hope you have the BSD ioctls. */ | |
760 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
761 | return -1; | |
762 | ||
763 | #endif | |
764 | #endif | |
765 | #endif | |
766 | ||
767 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 768 | #ifdef HAVE_LTCHARS |
68936329 JB |
769 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
770 | return -1; | |
771 | #endif | |
772 | ||
773 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 774 | #ifdef HAVE_TCHARS |
68936329 JB |
775 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
776 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
777 | return -1; | |
778 | #endif | |
779 | ||
780 | /* We have survived the tempest. */ | |
781 | return 0; | |
782 | } | |
783 | ||
784 | ||
785 | /* Set the parameters of the tty on FD according to the contents of | |
786 | *SETTINGS. If WAITP is non-zero, we wait for all queued output to | |
787 | be written before making the change; otherwise, we forget any | |
788 | queued input and make the change immediately. | |
789 | Return 0 if all went well, and -1 if anything failed. */ | |
790 | int | |
791 | emacs_set_tty (fd, settings, waitp) | |
792 | int fd; | |
793 | struct emacs_tty *settings; | |
794 | int waitp; | |
795 | { | |
796 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
797 | #ifdef HAVE_TCATTR | |
798 | /* We have those nifty POSIX tcmumbleattr functions. | |
799 | William J. Smith <wjs@wiis.wang.com> writes: | |
800 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
801 | able to perform any of the requested actions, even if some | |
802 | of the requested actions could not be performed. | |
803 | We must read settings back to ensure tty setup properly. | |
804 | AIX requires this to keep tty from hanging occasionally." */ | |
805 | for (;;) | |
806 | if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) | |
807 | { | |
808 | if (errno == EINTR) | |
809 | continue; | |
810 | else | |
811 | return -1; | |
812 | } | |
813 | else | |
814 | { | |
815 | struct termios new; | |
816 | ||
817 | /* Get the current settings, and see if they're what we asked for. */ | |
818 | tcgetattr (fd, &new); | |
819 | if (memcmp (&new, &settings->main, sizeof (new))) | |
820 | continue; | |
821 | else | |
822 | break; | |
823 | } | |
824 | ||
825 | #else | |
826 | #ifdef HAVE_TERMIO | |
827 | /* The SYSV-style interface? */ | |
828 | if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0) | |
829 | return -1; | |
830 | ||
831 | #else | |
832 | #ifdef VMS | |
833 | /* Vehemently Monstrous System? :-) */ | |
834 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
835 | &settings->main.class, 12, 0, 0, 0, 0) | |
836 | & 1)) | |
837 | return -1; | |
838 | ||
839 | #else | |
840 | /* I give up - I hope you have the BSD ioctls. */ | |
841 | if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
842 | return -1; | |
843 | ||
844 | #endif | |
845 | #endif | |
846 | #endif | |
847 | ||
848 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 849 | #ifdef HAVE_LTCHARS |
68936329 JB |
850 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
851 | return -1; | |
852 | #endif | |
853 | ||
854 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 855 | #ifdef HAVE_TCHARS |
68936329 JB |
856 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
857 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
858 | return -1; | |
859 | #endif | |
860 | ||
861 | /* We have survived the tempest. */ | |
862 | return 0; | |
863 | } | |
864 | ||
865 | \f | |
91bac16a JB |
866 | /* The initial tty mode bits */ |
867 | struct emacs_tty old_tty; | |
86a5659e JB |
868 | |
869 | int term_initted; /* 1 if outer tty status has been recorded */ | |
870 | ||
91bac16a JB |
871 | #ifdef BSD4_1 |
872 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
873 | sigio. */ | |
874 | int lmode; | |
875 | #endif | |
876 | ||
86a5659e JB |
877 | #ifdef F_SETOWN |
878 | int old_fcntl_owner; | |
879 | #endif /* F_SETOWN */ | |
880 | ||
86a5659e JB |
881 | /* This may also be defined in stdio, |
882 | but if so, this does no harm, | |
883 | and using the same name avoids wasting the other one's space. */ | |
884 | ||
885 | #if defined (USG) || defined (DGUX) | |
886 | unsigned char _sobuf[BUFSIZ+8]; | |
887 | #else | |
888 | char _sobuf[BUFSIZ]; | |
889 | #endif | |
890 | ||
50b8cf60 | 891 | #ifdef HAVE_LTCHARS |
86a5659e JB |
892 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
893 | #endif | |
50b8cf60 | 894 | #ifdef HAVE_TCHARS |
86a5659e JB |
895 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
896 | #endif | |
897 | ||
898 | init_sys_modes () | |
899 | { | |
91bac16a JB |
900 | struct emacs_tty tty; |
901 | ||
86a5659e JB |
902 | #ifdef VMS |
903 | #if 0 | |
904 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
905 | extern int (*interrupt_signal) (); | |
906 | #endif | |
907 | #endif | |
908 | ||
909 | if (noninteractive) | |
910 | return; | |
911 | ||
912 | #ifdef VMS | |
913 | if (!input_ef) | |
914 | input_ef = get_kbd_event_flag (); | |
915 | /* LIB$GET_EF (&input_ef); */ | |
916 | SYS$CLREF (input_ef); | |
917 | waiting_for_ast = 0; | |
918 | if (!timer_ef) | |
919 | timer_ef = get_timer_event_flag (); | |
920 | /* LIB$GET_EF (&timer_ef); */ | |
921 | SYS$CLREF (timer_ef); | |
210b2b4f | 922 | #if 0 |
86a5659e JB |
923 | if (!process_ef) |
924 | { | |
925 | LIB$GET_EF (&process_ef); | |
926 | SYS$CLREF (process_ef); | |
927 | } | |
928 | if (input_ef / 32 != process_ef / 32) | |
929 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 930 | #endif |
86a5659e | 931 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
932 | croak ("Input and timer event flags in different clusters."); |
933 | #if 0 | |
86a5659e JB |
934 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
935 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 936 | #endif |
86a5659e JB |
937 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
938 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
939 | #ifndef VMS4_4 |
940 | sys_access_reinit (); | |
941 | #endif | |
86a5659e | 942 | #endif /* not VMS */ |
91bac16a JB |
943 | |
944 | EMACS_GET_TTY (input_fd, &old_tty); | |
945 | ||
86a5659e JB |
946 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
947 | { | |
91bac16a | 948 | tty = old_tty; |
86a5659e | 949 | |
31be8d24 | 950 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
951 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
952 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
86a5659e | 953 | #ifdef ISTRIP |
91bac16a | 954 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 955 | #endif |
91bac16a JB |
956 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
957 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 RS |
958 | #ifdef IEXTEN |
959 | tty.main.c_iflag &= ~IEXTEN; /* Disable other editing characters. */ | |
960 | #endif | |
91bac16a | 961 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
962 | if (flow_control) |
963 | { | |
91bac16a | 964 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 965 | #ifdef IXANY |
91bac16a | 966 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
967 | #endif /* IXANY */ |
968 | } | |
969 | else | |
91bac16a JB |
970 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
971 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
972 | on output */ | |
973 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
974 | #ifdef CS8 |
975 | if (meta_key) | |
976 | { | |
91bac16a JB |
977 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
978 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
979 | } |
980 | #endif | |
91bac16a | 981 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
982 | /* Set up C-g for both SIGQUIT and SIGINT. |
983 | We don't know which we will get, but we handle both alike | |
984 | so which one it really gives us does not matter. */ | |
91bac16a JB |
985 | tty.main.c_cc[VQUIT] = quit_char; |
986 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
987 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 988 | #ifdef VSWTCH |
e2b40c23 | 989 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 990 | of C-z */ |
86a5659e JB |
991 | #endif /* VSWTCH */ |
992 | #if defined (mips) || defined (HAVE_TCATTR) | |
86a5659e | 993 | #ifdef VSUSP |
e2b40c23 | 994 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
995 | #endif /* VSUSP */ |
996 | #ifdef V_DSUSP | |
e2b40c23 | 997 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 998 | #endif /* V_DSUSP */ |
e2b40c23 RS |
999 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1000 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1001 | #endif /* VDSUSP */ | |
86a5659e JB |
1002 | #endif /* mips or HAVE_TCATTR */ |
1003 | #ifdef AIX | |
1004 | #ifndef IBMR2AIX | |
1005 | /* AIX enhanced edit loses NULs, so disable it */ | |
91bac16a JB |
1006 | tty.main.c_line = 0; |
1007 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1008 | #else |
91bac16a JB |
1009 | tty.main.c_cc[VSTRT] = 255; |
1010 | tty.main.c_cc[VSTOP] = 255; | |
1011 | tty.main.c_cc[VSUSP] = 255; | |
1012 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e JB |
1013 | #endif /* IBMR2AIX */ |
1014 | /* Also, PTY overloads NUL and BREAK. | |
1015 | don't ignore break, but don't signal either, so it looks like NUL. | |
1016 | This really serves a purpose only if running in an XTERM window | |
1017 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1018 | tty.main.c_iflag &= ~IGNBRK; |
1019 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1020 | #endif |
1021 | #else /* if not HAVE_TERMIO */ | |
1022 | #ifdef VMS | |
91bac16a | 1023 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1024 | if (meta_key) |
986ffb24 | 1025 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1026 | if (flow_control) |
91bac16a | 1027 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1028 | else |
91bac16a JB |
1029 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1030 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1031 | #else /* not VMS (BSD, that is) */ |
91bac16a | 1032 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1033 | if (meta_key) |
91bac16a JB |
1034 | tty.main.sg_flags |= ANYP; |
1035 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
86a5659e JB |
1036 | #endif /* not VMS (BSD, that is) */ |
1037 | #endif /* not HAVE_TERMIO */ | |
1038 | ||
91bac16a JB |
1039 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1040 | and turn off start and stop chars, etc. If not going to use | |
1041 | CBREAK mode, do this anyway so as to turn off local flow | |
1042 | control for user coming over network on 4.2; in this case, | |
1043 | only t_stopc and t_startc really matter. */ | |
1044 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1045 | #ifdef HAVE_TCHARS |
91bac16a JB |
1046 | /* Note: if not using CBREAK mode, it makes no difference how we |
1047 | set this */ | |
1048 | tty.tchars = new_tchars; | |
1049 | tty.tchars.t_intrc = quit_char; | |
1050 | if (flow_control) | |
1051 | { | |
1052 | tty.tchars.t_startc = '\021'; | |
1053 | tty.tchars.t_stopc = '\023'; | |
1054 | } | |
1055 | ||
1056 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ | |
1057 | #ifndef LPASS8 | |
1058 | #define LPASS8 0 | |
86a5659e | 1059 | #endif |
91bac16a JB |
1060 | |
1061 | #ifdef BSD4_1 | |
1062 | #define LNOFLSH 0100000 | |
1063 | #endif | |
1064 | ||
1065 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; | |
1066 | ||
1067 | #ifdef BSD4_1 | |
1068 | lmode = tty.lmode; | |
1069 | #endif | |
1070 | ||
50b8cf60 | 1071 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1072 | #endif /* not HAVE_TERMIO */ |
1073 | ||
50b8cf60 | 1074 | #ifdef HAVE_LTCHARS |
91bac16a | 1075 | tty.ltchars = new_ltchars; |
50b8cf60 | 1076 | #endif /* HAVE_LTCHARS */ |
91bac16a JB |
1077 | |
1078 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1079 | |
1080 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1081 | we have an unlocked terminal at the start. */ |
91bac16a | 1082 | |
86a5659e JB |
1083 | #ifdef TCXONC |
1084 | if (!flow_control) ioctl (0, TCXONC, 1); | |
1085 | #endif | |
1086 | #ifndef APOLLO | |
1087 | #ifdef TIOCSTART | |
1088 | if (!flow_control) ioctl (0, TIOCSTART, 0); | |
1089 | #endif | |
1090 | #endif | |
1091 | ||
1092 | #ifdef AIX | |
1093 | hft_init (); | |
1094 | #ifdef IBMR2AIX | |
1095 | { | |
1096 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1097 | to be only LF. This is the way that is done. */ | |
1098 | struct termio tty; | |
1099 | ||
1100 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1101 | write (1, "\033[20l", 5); | |
1102 | } | |
1103 | #endif | |
1104 | #endif | |
1105 | ||
86a5659e JB |
1106 | #ifdef VMS |
1107 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1108 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1109 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1110 | */ | |
1111 | queue_kbd_input (0); | |
1112 | #endif /* VMS */ | |
1113 | } | |
1114 | ||
1115 | #ifdef F_SETFL | |
1116 | #ifdef F_GETOWN /* F_SETFL does not imply existance of F_GETOWN */ | |
1117 | if (interrupt_input) | |
1118 | { | |
1119 | old_fcntl_owner = fcntl (0, F_GETOWN, 0); | |
1120 | fcntl (0, F_SETOWN, getpid ()); | |
1121 | init_sigio (); | |
1122 | } | |
1123 | #endif /* F_GETOWN */ | |
1124 | #endif /* F_SETFL */ | |
1125 | ||
1126 | #ifdef BSD4_1 | |
1127 | if (interrupt_input) | |
1128 | init_sigio (); | |
1129 | #endif | |
1130 | ||
1131 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1132 | #undef _IOFBF | |
1133 | #endif | |
1134 | #ifdef _IOFBF | |
1135 | /* This symbol is defined on recent USG systems. | |
1136 | Someone says without this call USG won't really buffer the file | |
1137 | even with a call to setbuf. */ | |
1138 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1139 | #else | |
1140 | setbuf (stdout, _sobuf); | |
1141 | #endif | |
1142 | set_terminal_modes (); | |
1143 | if (term_initted && no_redraw_on_reenter) | |
1144 | { | |
1145 | if (display_completed) | |
1146 | direct_output_forward_char (0); | |
1147 | } | |
1148 | else | |
1149 | { | |
0137dbf7 JB |
1150 | frame_garbaged = 1; |
1151 | #ifdef MULTI_FRAME | |
1152 | if (FRAMEP (Vterminal_frame)) | |
1153 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e JB |
1154 | #endif |
1155 | } | |
91bac16a | 1156 | |
86a5659e JB |
1157 | term_initted = 1; |
1158 | } | |
1159 | ||
1160 | /* Return nonzero if safe to use tabs in output. | |
1161 | At the time this is called, init_sys_modes has not been done yet. */ | |
1162 | ||
1163 | tabs_safe_p () | |
1164 | { | |
91bac16a JB |
1165 | struct emacs_tty tty; |
1166 | ||
1167 | EMACS_GET_TTY (input_fd, &tty); | |
1168 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e JB |
1169 | } |
1170 | ||
1171 | /* Get terminal size from system. | |
1172 | Store number of lines into *heightp and width into *widthp. | |
1173 | If zero or a negative number is stored, the value is not valid. */ | |
1174 | ||
0137dbf7 | 1175 | get_frame_size (widthp, heightp) |
86a5659e JB |
1176 | int *widthp, *heightp; |
1177 | { | |
86a5659e | 1178 | |
86a5659e | 1179 | #ifdef TIOCGWINSZ |
91bac16a JB |
1180 | |
1181 | /* BSD-style. */ | |
86a5659e | 1182 | struct winsize size; |
91bac16a JB |
1183 | |
1184 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1185 | *widthp = *heightp = 0; | |
1186 | else | |
1187 | { | |
1188 | *widthp = size.ws_col; | |
1189 | *heightp = size.ws_row; | |
1190 | } | |
1191 | ||
1192 | #else | |
1193 | #ifdef TIOCGSIZE | |
1194 | ||
1195 | /* SunOS - style. */ | |
1196 | struct ttysize size; | |
1197 | ||
1198 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1199 | *widthp = *heightp = 0; | |
1200 | else | |
1201 | { | |
1202 | *widthp = size.ts_cols; | |
1203 | *heightp = size.ts_lines; | |
1204 | } | |
1205 | ||
1206 | #else | |
86a5659e | 1207 | #ifdef VMS |
91bac16a JB |
1208 | |
1209 | struct sensemode tty; | |
1210 | ||
1211 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1212 | &tty.class, 12, 0, 0, 0, 0); |
1213 | *widthp = tty.scr_wid; | |
1214 | *heightp = tty.scr_len; | |
91bac16a | 1215 | |
86a5659e | 1216 | #else /* system doesn't know size */ |
91bac16a | 1217 | |
86a5659e JB |
1218 | *widthp = 0; |
1219 | *heightp = 0; | |
91bac16a JB |
1220 | |
1221 | #endif /* not VMS */ | |
1222 | #endif /* not SunOS-style */ | |
1223 | #endif /* not BSD-style */ | |
86a5659e | 1224 | } |
91bac16a | 1225 | |
86a5659e | 1226 | \f |
91bac16a | 1227 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1228 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
86a5659e JB |
1229 | reset_sys_modes () |
1230 | { | |
1231 | if (noninteractive) | |
1232 | { | |
1233 | fflush (stdout); | |
1234 | return; | |
1235 | } | |
1236 | if (!term_initted) | |
1237 | return; | |
1238 | if (read_socket_hook || !EQ (Vwindow_system, Qnil)) | |
1239 | return; | |
0137dbf7 JB |
1240 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1241 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1242 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1243 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
86a5659e JB |
1244 | #ifdef IBMR2AIX |
1245 | { | |
1246 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1247 | do the LF only. Now, we need to reset it. */ | |
1248 | struct termio tty; | |
1249 | ||
1250 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1251 | write (1, "\033[20h", 5); | |
1252 | } | |
1253 | #endif | |
1254 | ||
1255 | reset_terminal_modes (); | |
1256 | fflush (stdout); | |
1257 | #ifdef BSD | |
1258 | #ifndef BSD4_1 | |
1259 | /* Avoid possible loss of output when changing terminal modes. */ | |
1260 | fsync (fileno (stdout)); | |
1261 | #endif | |
1262 | #endif | |
91bac16a | 1263 | |
86a5659e JB |
1264 | #ifdef F_SETFL |
1265 | #ifdef F_SETOWN /* F_SETFL does not imply existance of F_SETOWN */ | |
1266 | if (interrupt_input) | |
1267 | { | |
1268 | reset_sigio (); | |
1269 | fcntl (0, F_SETOWN, old_fcntl_owner); | |
1270 | } | |
1271 | #endif /* F_SETOWN */ | |
1272 | #endif /* F_SETFL */ | |
1273 | #ifdef BSD4_1 | |
1274 | if (interrupt_input) | |
1275 | reset_sigio (); | |
1276 | #endif /* BSD4_1 */ | |
91bac16a | 1277 | |
1334b321 | 1278 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) |
91bac16a | 1279 | ; |
86a5659e JB |
1280 | |
1281 | #ifdef AIX | |
1282 | hft_reset (); | |
1283 | #endif | |
1284 | } | |
1285 | \f | |
1286 | #ifdef HAVE_PTYS | |
1287 | ||
1288 | /* Set up the proper status flags for use of a pty. */ | |
1289 | ||
1290 | setup_pty (fd) | |
1291 | int fd; | |
1292 | { | |
1293 | /* I'm told that TOICREMOTE does not mean control chars | |
1294 | "can't be sent" but rather that they don't have | |
1295 | input-editing or signaling effects. | |
1296 | That should be good, because we have other ways | |
1297 | to do those things in Emacs. | |
1298 | However, telnet mode seems not to work on 4.2. | |
1299 | So TIOCREMOTE is turned off now. */ | |
1300 | ||
1301 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1302 | will hang. In particular, the "timeout" feature (which | |
1303 | causes a read to return if there is no data available) | |
1304 | does this. Also it is known that telnet mode will hang | |
1305 | in such a way that Emacs must be stopped (perhaps this | |
1306 | is the same problem). | |
1307 | ||
1308 | If TIOCREMOTE is turned off, then there is a bug in | |
1309 | hp-ux which sometimes loses data. Apparently the | |
1310 | code which blocks the master process when the internal | |
1311 | buffer fills up does not work. Other than this, | |
1312 | though, everything else seems to work fine. | |
1313 | ||
1314 | Since the latter lossage is more benign, we may as well | |
1315 | lose that way. -- cph */ | |
1316 | #ifdef FIONBIO | |
1317 | #ifdef SYSV_PTYS | |
1318 | { | |
1319 | int on = 1; | |
1320 | ioctl (fd, FIONBIO, &on); | |
1321 | } | |
1322 | #endif | |
1323 | #endif | |
1324 | #ifdef IBMRTAIX | |
1325 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1326 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1327 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1328 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1329 | /* change this behavior, but I'm not going to hold my breath. */ | |
1330 | signal (SIGHUP, SIG_IGN); | |
1331 | #endif | |
1332 | } | |
1333 | #endif /* HAVE_PTYS */ | |
1334 | \f | |
1335 | #ifdef VMS | |
1336 | ||
1337 | /* Assigning an input channel is done at the start of Emacs execution. | |
1338 | This is called each time Emacs is resumed, also, but does nothing | |
1339 | because input_chain is no longer zero. */ | |
1340 | ||
1341 | init_vms_input () | |
1342 | { | |
1343 | int status; | |
1344 | ||
91bac16a | 1345 | if (input_fd == 0) |
86a5659e | 1346 | { |
91bac16a | 1347 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1348 | if (! (status & 1)) |
1349 | LIB$STOP (status); | |
1350 | } | |
1351 | } | |
1352 | ||
1353 | /* Deassigning the input channel is done before exiting. */ | |
1354 | ||
1355 | stop_vms_input () | |
1356 | { | |
91bac16a | 1357 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1358 | } |
1359 | ||
1360 | short input_buffer; | |
1361 | ||
1362 | /* Request reading one character into the keyboard buffer. | |
1363 | This is done as soon as the buffer becomes empty. */ | |
1364 | ||
1365 | queue_kbd_input () | |
1366 | { | |
1367 | int status; | |
210b2b4f JB |
1368 | extern kbd_input_ast (); |
1369 | ||
86a5659e JB |
1370 | waiting_for_ast = 0; |
1371 | stop_input = 0; | |
91bac16a | 1372 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1373 | &input_iosb, kbd_input_ast, 1, |
1374 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1375 | } | |
1376 | ||
1377 | int input_count; | |
1378 | ||
1379 | /* Ast routine that is called when keyboard input comes in | |
1380 | in accord with the SYS$QIO above. */ | |
1381 | ||
1382 | kbd_input_ast () | |
1383 | { | |
1384 | register int c = -1; | |
1385 | int old_errno = errno; | |
ffd56f97 | 1386 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1387 | |
1388 | if (waiting_for_ast) | |
1389 | SYS$SETEF (input_ef); | |
1390 | waiting_for_ast = 0; | |
1391 | input_count++; | |
1392 | #ifdef ASTDEBUG | |
1393 | if (input_count == 25) | |
1394 | exit (1); | |
1395 | printf ("Ast # %d,", input_count); | |
1396 | printf (" iosb = %x, %x, %x, %x", | |
1397 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1398 | input_iosb.term); | |
1399 | #endif | |
1400 | if (input_iosb.offset) | |
1401 | { | |
1402 | c = input_buffer; | |
1403 | #ifdef ASTDEBUG | |
1404 | printf (", char = 0%o", c); | |
1405 | #endif | |
1406 | } | |
1407 | #ifdef ASTDEBUG | |
1408 | printf ("\n"); | |
1409 | fflush (stdout); | |
1410 | sleep (1); | |
1411 | #endif | |
1412 | if (! stop_input) | |
1413 | queue_kbd_input (); | |
1414 | if (c >= 0) | |
1415 | { | |
1416 | struct input_event e; | |
1417 | e.kind = ascii_keystroke; | |
210b2b4f JB |
1418 | XSET (e.code, Lisp_Int, c); |
1419 | #ifdef MULTI_FRAME | |
1420 | XSET(e.frame_or_window, Lisp_Frame, selected_frame); | |
1421 | #else | |
1422 | e.frame_or_window = Qnil; | |
1423 | #endif | |
86a5659e JB |
1424 | kbd_buffer_store_event (&e); |
1425 | } | |
ffd56f97 JB |
1426 | if (input_available_clear_time) |
1427 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1428 | errno = old_errno; |
1429 | } | |
1430 | ||
1431 | /* Wait until there is something in kbd_buffer. */ | |
1432 | ||
1433 | wait_for_kbd_input () | |
1434 | { | |
1435 | extern int have_process_input, process_exited; | |
1436 | ||
1437 | /* If already something, avoid doing system calls. */ | |
1438 | if (detect_input_pending ()) | |
1439 | { | |
1440 | return; | |
1441 | } | |
1442 | /* Clear a flag, and tell ast routine above to set it. */ | |
1443 | SYS$CLREF (input_ef); | |
1444 | waiting_for_ast = 1; | |
1445 | /* Check for timing error: ast happened while we were doing that. */ | |
1446 | if (!detect_input_pending ()) | |
1447 | { | |
1448 | /* No timing error: wait for flag to be set. */ | |
1449 | set_waiting_for_input (0); | |
1450 | SYS$WFLOR (input_ef, input_eflist); | |
1451 | clear_waiting_for_input (0); | |
1452 | if (!detect_input_pending ()) | |
1453 | /* Check for subprocess input availability */ | |
1454 | { | |
1455 | int dsp = have_process_input || process_exited; | |
1456 | ||
1457 | SYS$CLREF (process_ef); | |
1458 | if (have_process_input) | |
1459 | process_command_input (); | |
1460 | if (process_exited) | |
1461 | process_exit (); | |
1462 | if (dsp) | |
1463 | { | |
1464 | update_mode_lines++; | |
1465 | redisplay_preserve_echo_area (); | |
1466 | } | |
1467 | } | |
1468 | } | |
1469 | waiting_for_ast = 0; | |
1470 | } | |
1471 | ||
1472 | /* Get rid of any pending QIO, when we are about to suspend | |
1473 | or when we want to throw away pending input. | |
1474 | We wait for a positive sign that the AST routine has run | |
1475 | and therefore there is no I/O request queued when we return. | |
1476 | SYS$SETAST is used to avoid a timing error. */ | |
1477 | ||
1478 | end_kbd_input () | |
1479 | { | |
1480 | #ifdef ASTDEBUG | |
1481 | printf ("At end_kbd_input.\n"); | |
1482 | fflush (stdout); | |
1483 | sleep (1); | |
1484 | #endif | |
1485 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
1486 | { | |
91bac16a | 1487 | SYS$CANCEL (input_fd); |
86a5659e JB |
1488 | return; |
1489 | } | |
1490 | ||
1491 | SYS$SETAST (0); | |
1492 | /* Clear a flag, and tell ast routine above to set it. */ | |
1493 | SYS$CLREF (input_ef); | |
1494 | waiting_for_ast = 1; | |
1495 | stop_input = 1; | |
91bac16a | 1496 | SYS$CANCEL (input_fd); |
86a5659e JB |
1497 | SYS$SETAST (1); |
1498 | SYS$WAITFR (input_ef); | |
1499 | waiting_for_ast = 0; | |
1500 | } | |
1501 | ||
1502 | /* Wait for either input available or time interval expiry. */ | |
1503 | ||
1504 | input_wait_timeout (timeval) | |
1505 | int timeval; /* Time to wait, in seconds */ | |
1506 | { | |
1507 | int time [2]; | |
1508 | static int zero = 0; | |
1509 | static int large = -10000000; | |
1510 | ||
1511 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1512 | ||
1513 | /* If already something, avoid doing system calls. */ | |
1514 | if (detect_input_pending ()) | |
1515 | { | |
1516 | return; | |
1517 | } | |
1518 | /* Clear a flag, and tell ast routine above to set it. */ | |
1519 | SYS$CLREF (input_ef); | |
1520 | waiting_for_ast = 1; | |
1521 | /* Check for timing error: ast happened while we were doing that. */ | |
1522 | if (!detect_input_pending ()) | |
1523 | { | |
1524 | /* No timing error: wait for flag to be set. */ | |
1525 | SYS$CANTIM (1, 0); | |
1526 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1527 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
1528 | } | |
1529 | waiting_for_ast = 0; | |
1530 | } | |
1531 | ||
1532 | /* The standard `sleep' routine works some other way | |
1533 | and it stops working if you have ever quit out of it. | |
1534 | This one continues to work. */ | |
1535 | ||
1536 | sys_sleep (timeval) | |
1537 | int timeval; | |
1538 | { | |
1539 | int time [2]; | |
1540 | static int zero = 0; | |
1541 | static int large = -10000000; | |
1542 | ||
1543 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1544 | ||
1545 | SYS$CANTIM (1, 0); | |
1546 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1547 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
1548 | } | |
1549 | ||
1550 | init_sigio () | |
1551 | { | |
1552 | request_sigio (); | |
1553 | } | |
1554 | ||
1555 | reset_sigio () | |
1556 | { | |
1557 | unrequest_sigio (); | |
1558 | } | |
1559 | ||
1560 | request_sigio () | |
1561 | { | |
1562 | croak ("request sigio"); | |
1563 | } | |
1564 | ||
1565 | unrequest_sigio () | |
1566 | { | |
1567 | croak ("unrequest sigio"); | |
1568 | } | |
1569 | ||
1570 | #endif /* VMS */ | |
1571 | \f | |
1572 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
1573 | #ifndef CANNOT_DUMP | |
1574 | #define NEED_STARTS | |
1575 | #endif | |
1576 | ||
1577 | #ifndef SYSTEM_MALLOC | |
1578 | #ifndef NEED_STARTS | |
1579 | #define NEED_STARTS | |
1580 | #endif | |
1581 | #endif | |
1582 | ||
1583 | #ifdef NEED_STARTS | |
1584 | /* Some systems that cannot dump also cannot implement these. */ | |
1585 | ||
1586 | /* | |
1587 | * Return the address of the start of the text segment prior to | |
1588 | * doing an unexec. After unexec the return value is undefined. | |
1589 | * See crt0.c for further explanation and _start. | |
1590 | * | |
1591 | */ | |
1592 | ||
1593 | #ifndef CANNOT_UNEXEC | |
1594 | char * | |
1595 | start_of_text () | |
1596 | { | |
1597 | #ifdef TEXT_START | |
1598 | return ((char *) TEXT_START); | |
1599 | #else | |
1600 | #ifdef GOULD | |
1601 | extern csrt (); | |
1602 | return ((char *) csrt); | |
1603 | #else /* not GOULD */ | |
1604 | extern int _start (); | |
1605 | return ((char *) _start); | |
1606 | #endif /* GOULD */ | |
1607 | #endif /* TEXT_START */ | |
1608 | } | |
1609 | #endif /* not CANNOT_UNEXEC */ | |
1610 | ||
1611 | /* | |
1612 | * Return the address of the start of the data segment prior to | |
1613 | * doing an unexec. After unexec the return value is undefined. | |
1614 | * See crt0.c for further information and definition of data_start. | |
1615 | * | |
1616 | * Apparently, on BSD systems this is etext at startup. On | |
1617 | * USG systems (swapping) this is highly mmu dependent and | |
1618 | * is also dependent on whether or not the program is running | |
1619 | * with shared text. Generally there is a (possibly large) | |
1620 | * gap between end of text and start of data with shared text. | |
1621 | * | |
1622 | * On Uniplus+ systems with shared text, data starts at a | |
1623 | * fixed address. Each port (from a given oem) is generally | |
1624 | * different, and the specific value of the start of data can | |
1625 | * be obtained via the UniPlus+ specific "uvar" system call, | |
1626 | * however the method outlined in crt0.c seems to be more portable. | |
1627 | * | |
1628 | * Probably what will have to happen when a USG unexec is available, | |
1629 | * at least on UniPlus, is temacs will have to be made unshared so | |
1630 | * that text and data are contiguous. Then once loadup is complete, | |
1631 | * unexec will produce a shared executable where the data can be | |
1632 | * at the normal shared text boundry and the startofdata variable | |
1633 | * will be patched by unexec to the correct value. | |
1634 | * | |
1635 | */ | |
1636 | ||
1637 | char * | |
1638 | start_of_data () | |
1639 | { | |
1640 | #ifdef DATA_START | |
1641 | return ((char *) DATA_START); | |
6c65530f JB |
1642 | #else |
1643 | #ifdef ORDINARY_LINK | |
1644 | /* | |
1645 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
1646 | * data_start isn't defined. We take the address of environ, which | |
1647 | * is known to live at or near the start of the system crt0.c, and | |
1648 | * we don't sweat the handful of bytes that might lose. | |
1649 | */ | |
1650 | extern char **environ; | |
1651 | ||
1652 | return((char *) &environ); | |
86a5659e JB |
1653 | #else |
1654 | extern int data_start; | |
1655 | return ((char *) &data_start); | |
6c65530f JB |
1656 | #endif /* ORDINARY_LINK */ |
1657 | #endif /* DATA_START */ | |
86a5659e JB |
1658 | } |
1659 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
1660 | ||
1661 | #ifndef CANNOT_DUMP | |
1662 | /* Some systems that cannot dump also cannot implement these. */ | |
1663 | ||
1664 | /* | |
1665 | * Return the address of the end of the text segment prior to | |
1666 | * doing an unexec. After unexec the return value is undefined. | |
1667 | */ | |
1668 | ||
1669 | char * | |
1670 | end_of_text () | |
1671 | { | |
1672 | #ifdef TEXT_END | |
1673 | return ((char *) TEXT_END); | |
1674 | #else | |
1675 | extern int etext; | |
1676 | return ((char *) &etext); | |
1677 | #endif | |
1678 | } | |
1679 | ||
1680 | /* | |
1681 | * Return the address of the end of the data segment prior to | |
1682 | * doing an unexec. After unexec the return value is undefined. | |
1683 | */ | |
1684 | ||
1685 | char * | |
1686 | end_of_data () | |
1687 | { | |
1688 | #ifdef DATA_END | |
1689 | return ((char *) DATA_END); | |
1690 | #else | |
1691 | extern int edata; | |
1692 | return ((char *) &edata); | |
1693 | #endif | |
1694 | } | |
1695 | ||
1696 | #endif /* not CANNOT_DUMP */ | |
1697 | \f | |
1698 | /* Get_system_name returns as its value | |
1699 | a string for the Lisp function system-name to return. */ | |
1700 | ||
1701 | #ifdef BSD4_1 | |
1702 | #include <whoami.h> | |
1703 | #endif | |
1704 | ||
e36ba278 RS |
1705 | /* Can't have this within the function since `static' is #defined to |
1706 | nothing for some USG systems. */ | |
86a5659e | 1707 | #ifdef USG |
e36ba278 RS |
1708 | #ifdef HAVE_GETHOSTNAME |
1709 | static char get_system_name_name[256]; | |
1710 | #else /* not HAVE_GETHOSTNAME */ | |
86a5659e | 1711 | static struct utsname get_system_name_name; |
e36ba278 RS |
1712 | #endif /* not HAVE_GETHOSTNAME */ |
1713 | #endif /* USG */ | |
86a5659e | 1714 | |
f8a80313 RS |
1715 | #ifndef BSD4_1 |
1716 | #ifndef USG | |
1717 | #ifndef VMS | |
1718 | #ifdef HAVE_SOCKETS | |
1719 | #include <sys/socket.h> | |
1720 | #include <netdb.h> | |
1721 | #endif /* HAVE_SOCKETS */ | |
1722 | #endif /* not VMS */ | |
1723 | #endif /* not USG */ | |
1724 | #endif /* not BSD4_1 */ | |
1725 | ||
86a5659e JB |
1726 | char * |
1727 | get_system_name () | |
1728 | { | |
1729 | #ifdef USG | |
e36ba278 RS |
1730 | #ifdef HAVE_GETHOSTNAME |
1731 | gethostname (get_system_name_name, sizeof (get_system_name_name)); | |
1732 | return get_system_name_name; | |
1733 | #else /* not HAVE_GETHOSTNAME */ | |
86a5659e JB |
1734 | uname (&get_system_name_name); |
1735 | return (get_system_name_name.nodename); | |
e36ba278 | 1736 | #endif /* not HAVE_GETHOSTNAME */ |
86a5659e JB |
1737 | #else /* Not USG */ |
1738 | #ifdef BSD4_1 | |
1739 | return sysname; | |
1740 | #else /* not USG, not 4.1 */ | |
1741 | static char system_name_saved[32]; | |
1742 | #ifdef VMS | |
1743 | char *sp; | |
1744 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
1745 | sp = "vax-vms"; | |
1746 | else | |
1747 | { | |
1748 | char *end; | |
1749 | ||
1750 | if ((end = index (sp, ':')) != 0) | |
1751 | *end = '\0'; | |
1752 | } | |
1753 | strcpy (system_name_saved, sp); | |
1754 | #else /* not VMS */ | |
1755 | gethostname (system_name_saved, sizeof (system_name_saved)); | |
f8a80313 RS |
1756 | #ifdef HAVE_SOCKETS |
1757 | /* Turn the hostname into the official, fully-qualified hostname. | |
1758 | Don't do this if we're going to dump; this can confuse system | |
1759 | libraries on some machines and make the dumped emacs core dump. */ | |
1760 | #ifndef CANNOT_DUMP | |
1761 | if (initialized) | |
1762 | #endif /* not CANNOT_DUMP */ | |
1763 | { | |
1764 | struct hostent *hp; | |
1765 | hp = gethostbyname (system_name_saved); | |
1766 | if (hp && strlen (hp->h_name) < sizeof(system_name_saved)) | |
1767 | strcpy (system_name_saved, hp->h_name); | |
1768 | } | |
1769 | #endif /* HAVE_SOCKETS */ | |
86a5659e JB |
1770 | #endif /* not VMS */ |
1771 | return system_name_saved; | |
1772 | #endif /* not USG, not 4.1 */ | |
1773 | #endif /* not USG */ | |
1774 | } | |
210b2b4f JB |
1775 | |
1776 | #ifdef VMS | |
1777 | #ifndef HAVE_GETHOSTNAME | |
1778 | void gethostname(buf, len) | |
1779 | char *buf; | |
1780 | int len; | |
1781 | { | |
1782 | char *s; | |
1783 | s = getenv ("SYS$NODE"); | |
1784 | if (s == NULL) | |
1785 | buf[0] = '\0'; | |
1786 | else { | |
1787 | strncpy (buf, s, len - 2); | |
1788 | buf[len - 1] = '\0'; | |
1789 | } /* else */ | |
1790 | } /* static void gethostname */ | |
1791 | #endif /* ! HAVE_GETHOSTNAME */ | |
1792 | #endif /* VMS */ | |
1793 | ||
86a5659e JB |
1794 | \f |
1795 | #ifndef VMS | |
1796 | #ifndef HAVE_SELECT | |
1797 | ||
1798 | #ifdef HAVE_X_WINDOWS | |
1799 | /* Cause explanatory error message at compile time, | |
1800 | since the select emulation is not good enough for X. */ | |
1801 | int *x = &x_windows_lose_if_no_select_system_call; | |
1802 | #endif | |
1803 | ||
1804 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
1805 | * Only checks read descriptors. | |
1806 | */ | |
1807 | /* How long to wait between checking fds in select */ | |
1808 | #define SELECT_PAUSE 1 | |
1809 | int select_alarmed; | |
1810 | ||
1811 | /* For longjmp'ing back to read_input_waiting. */ | |
1812 | ||
1813 | jmp_buf read_alarm_throw; | |
1814 | ||
1815 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
1816 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
1817 | ||
1818 | int read_alarm_should_throw; | |
1819 | ||
1820 | SIGTYPE | |
1821 | select_alarm () | |
1822 | { | |
1823 | select_alarmed = 1; | |
1824 | #ifdef BSD4_1 | |
1825 | sigrelse (SIGALRM); | |
1826 | #else /* not BSD4_1 */ | |
1827 | signal (SIGALRM, SIG_IGN); | |
1828 | #endif /* not BSD4_1 */ | |
1829 | if (read_alarm_should_throw) | |
1830 | longjmp (read_alarm_throw, 1); | |
1831 | } | |
1832 | ||
1833 | /* Only rfds are checked. */ | |
1834 | int | |
1835 | select (nfds, rfds, wfds, efds, timeout) | |
1836 | int nfds; | |
1837 | int *rfds, *wfds, *efds, *timeout; | |
1838 | { | |
1839 | int ravail = 0, orfds = 0, old_alarm; | |
1840 | int timeoutval = timeout ? *timeout : 100000; | |
1841 | int *local_timeout = &timeoutval; | |
1842 | extern int proc_buffered_char[]; | |
1843 | #ifndef subprocesses | |
1844 | int process_tick = 0, update_tick = 0; | |
1845 | #else | |
1846 | extern int process_tick, update_tick; | |
1847 | #endif | |
1848 | SIGTYPE (*old_trap) (); | |
1849 | unsigned char buf; | |
1850 | ||
1851 | if (rfds) | |
1852 | { | |
1853 | orfds = *rfds; | |
1854 | *rfds = 0; | |
1855 | } | |
1856 | if (wfds) | |
1857 | *wfds = 0; | |
1858 | if (efds) | |
1859 | *efds = 0; | |
1860 | ||
1861 | /* If we are looking only for the terminal, with no timeout, | |
1862 | just read it and wait -- that's more efficient. */ | |
1863 | if (orfds == 1 && *local_timeout == 100000 && process_tick == update_tick) | |
1864 | { | |
1865 | if (! detect_input_pending ()) | |
1866 | read_input_waiting (); | |
1867 | *rfds = 1; | |
1868 | return 1; | |
1869 | } | |
1870 | ||
1871 | /* Once a second, till the timer expires, check all the flagged read | |
1872 | * descriptors to see if any input is available. If there is some then | |
1873 | * set the corresponding bit in the return copy of rfds. | |
1874 | */ | |
1875 | while (1) | |
1876 | { | |
1877 | register int to_check, bit, fd; | |
1878 | ||
1879 | if (rfds) | |
1880 | { | |
1881 | for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++) | |
1882 | { | |
1883 | if (orfds & bit) | |
1884 | { | |
1885 | int avail = 0, status = 0; | |
1886 | ||
1887 | if (bit == 1) | |
1888 | avail = detect_input_pending (); /* Special keyboard handler */ | |
1889 | else | |
1890 | { | |
1891 | #ifdef FIONREAD | |
1892 | status = ioctl (fd, FIONREAD, &avail); | |
1893 | #else /* no FIONREAD */ | |
1894 | /* Hoping it will return -1 if nothing available | |
1895 | or 0 if all 0 chars requested are read. */ | |
1896 | if (proc_buffered_char[fd] >= 0) | |
1897 | avail = 1; | |
1898 | else | |
1899 | { | |
1900 | avail = read (fd, &buf, 1); | |
1901 | if (avail > 0) | |
1902 | proc_buffered_char[fd] = buf; | |
1903 | } | |
1904 | #endif /* no FIONREAD */ | |
1905 | } | |
1906 | if (status >= 0 && avail > 0) | |
1907 | { | |
1908 | (*rfds) |= bit; | |
1909 | ravail++; | |
1910 | } | |
1911 | } | |
1912 | } | |
1913 | } | |
1914 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
1915 | break; | |
1916 | old_alarm = alarm (0); | |
34567704 | 1917 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
1918 | select_alarmed = 0; |
1919 | alarm (SELECT_PAUSE); | |
1920 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
1921 | while (select_alarmed == 0 && *local_timeout != 0 | |
1922 | && process_tick == update_tick) | |
1923 | { | |
1924 | /* If we are interested in terminal input, | |
1925 | wait by reading the terminal. | |
1926 | That makes instant wakeup for terminal input at least. */ | |
1927 | if (orfds & 1) | |
1928 | { | |
1929 | read_input_waiting (); | |
1930 | if (detect_input_pending ()) | |
1931 | select_alarmed = 1; | |
1932 | } | |
1933 | else | |
1934 | pause (); | |
1935 | } | |
1936 | (*local_timeout) -= SELECT_PAUSE; | |
1937 | /* Reset the old alarm if there was one */ | |
1938 | alarm (0); | |
1939 | signal (SIGALRM, old_trap); | |
1940 | if (old_alarm != 0) | |
1941 | { | |
1942 | /* Reset or forge an interrupt for the original handler. */ | |
1943 | old_alarm -= SELECT_PAUSE; | |
1944 | if (old_alarm <= 0) | |
1945 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
1946 | else | |
1947 | alarm (old_alarm); | |
1948 | } | |
1949 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
1950 | break; | |
1951 | } | |
1952 | return ravail; | |
1953 | } | |
1954 | ||
1955 | /* Read keyboard input into the standard buffer, | |
1956 | waiting for at least one character. */ | |
1957 | ||
1958 | /* Make all keyboard buffers much bigger when using X windows. */ | |
1959 | #ifdef HAVE_X_WINDOWS | |
1960 | #define BUFFER_SIZE_FACTOR 16 | |
1961 | #else | |
1962 | #define BUFFER_SIZE_FACTOR 1 | |
1963 | #endif | |
1964 | ||
1965 | read_input_waiting () | |
1966 | { | |
1967 | char buf[256 * BUFFER_SIZE_FACTOR]; | |
1968 | struct input_event e; | |
34567704 JB |
1969 | int nread, i; |
1970 | extern int quit_char; | |
86a5659e JB |
1971 | |
1972 | if (read_socket_hook) | |
1973 | { | |
1974 | read_alarm_should_throw = 0; | |
1975 | if (! setjmp (read_alarm_throw)) | |
1976 | nread = (*read_socket_hook) (0, buf, 256 * BUFFER_SIZE_FACTOR, 1, 0); | |
1977 | else | |
1978 | nread = -1; | |
1979 | } | |
1980 | else | |
1981 | nread = read (fileno (stdin), buf, 1); | |
1982 | ||
1983 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
1984 | e.kind = ascii_keystroke; | |
6c65530f | 1985 | e.frame_or_window = selected_frame; |
57ef1664 | 1986 | e.modifiers = 0; |
86a5659e JB |
1987 | for (i = 0; i < nread; i++) |
1988 | { | |
1989 | XSET (e.code, Lisp_Int, buf[i]); | |
1990 | kbd_buffer_store_event (&e); | |
1991 | /* Don't look at input that follows a C-g too closely. | |
1992 | This reduces lossage due to autorepeat on C-g. */ | |
34567704 | 1993 | if (buf[i] == quit_char) |
86a5659e JB |
1994 | break; |
1995 | } | |
1996 | } | |
1997 | ||
1998 | #endif /* not HAVE_SELECT */ | |
1999 | #endif /* not VMS */ | |
2000 | \f | |
2001 | #ifdef BSD4_1 | |
86a5659e JB |
2002 | /* |
2003 | * Partially emulate 4.2 open call. | |
2004 | * open is defined as this in 4.1. | |
2005 | * | |
2006 | * - added by Michael Bloom @ Citicorp/TTI | |
2007 | * | |
2008 | */ | |
2009 | ||
2010 | int | |
2011 | sys_open (path, oflag, mode) | |
2012 | char *path; | |
2013 | int oflag, mode; | |
2014 | { | |
2015 | if (oflag & O_CREAT) | |
2016 | return creat (path, mode); | |
2017 | else | |
2018 | return open (path, oflag); | |
2019 | } | |
2020 | ||
2021 | init_sigio () | |
2022 | { | |
2023 | if (noninteractive) | |
2024 | return; | |
2025 | lmode = LINTRUP | lmode; | |
2026 | ioctl (0, TIOCLSET, &lmode); | |
2027 | } | |
2028 | ||
2029 | reset_sigio () | |
2030 | { | |
2031 | if (noninteractive) | |
2032 | return; | |
2033 | lmode = ~LINTRUP & lmode; | |
2034 | ioctl (0, TIOCLSET, &lmode); | |
2035 | } | |
2036 | ||
2037 | request_sigio () | |
2038 | { | |
2039 | sigrelse (SIGTINT); | |
2040 | ||
2041 | interrupts_deferred = 0; | |
2042 | } | |
2043 | ||
2044 | unrequest_sigio () | |
2045 | { | |
2046 | sighold (SIGTINT); | |
2047 | ||
2048 | interrupts_deferred = 1; | |
2049 | } | |
2050 | ||
2051 | /* still inside #ifdef BSD4_1 */ | |
2052 | #ifdef subprocesses | |
2053 | ||
2054 | int sigheld; /* Mask of held signals */ | |
2055 | ||
2056 | sigholdx (signum) | |
2057 | int signum; | |
2058 | { | |
2059 | sigheld |= sigbit (signum); | |
2060 | sighold (signum); | |
2061 | } | |
2062 | ||
2063 | sigisheld (signum) | |
2064 | int signum; | |
2065 | { | |
2066 | sigheld |= sigbit (signum); | |
2067 | } | |
2068 | ||
2069 | sigunhold (signum) | |
2070 | int signum; | |
2071 | { | |
2072 | sigheld &= ~sigbit (signum); | |
2073 | sigrelse (signum); | |
2074 | } | |
2075 | ||
2076 | sigfree () /* Free all held signals */ | |
2077 | { | |
2078 | int i; | |
2079 | for (i = 0; i < NSIG; i++) | |
2080 | if (sigheld & sigbit (i)) | |
2081 | sigrelse (i); | |
2082 | sigheld = 0; | |
2083 | } | |
2084 | ||
2085 | sigbit (i) | |
2086 | { | |
2087 | return 1 << (i - 1); | |
2088 | } | |
2089 | #endif /* subprocesses */ | |
2090 | #endif /* BSD4_1 */ | |
2091 | \f | |
2092 | /* POSIX signals support - DJB */ | |
2093 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2094 | ||
2095 | #ifdef POSIX_SIGNALS | |
2096 | ||
2097 | sigset_t old_mask, empty_mask, full_mask, temp_mask; | |
2098 | static struct sigaction new_action, old_action; | |
2099 | ||
2100 | init_signals () | |
2101 | { | |
00eaaa32 JB |
2102 | sigemptyset (&empty_mask); |
2103 | sigfillset (&full_mask); | |
86a5659e JB |
2104 | } |
2105 | ||
86a5659e JB |
2106 | signal_handler_t |
2107 | sys_signal (int signal_number, signal_handler_t action) | |
2108 | { | |
2109 | #ifdef DGUX | |
2110 | /* This gets us restartable system calls for efficiency. | |
2111 | The "else" code will works as well. */ | |
2112 | return (berk_signal (signal_number, action)); | |
2113 | #else | |
2114 | sigemptyset (&new_action.sa_mask); | |
2115 | new_action.sa_handler = action; | |
4a785b6e | 2116 | new_action.sa_flags = 0; |
d32b2f3c | 2117 | sigaction (signal_number, &new_action, &old_action); |
86a5659e JB |
2118 | return (old_action.sa_handler); |
2119 | #endif /* DGUX */ | |
2120 | } | |
2121 | ||
e065a56e JB |
2122 | #ifndef __GNUC__ |
2123 | /* If we're compiling with GCC, we don't need this function, since it | |
2124 | can be written as a macro. */ | |
2125 | sigset_t | |
2126 | sys_sigmask (int sig) | |
2127 | { | |
2128 | sigset_t mask; | |
2129 | sigemptyset (&mask); | |
2130 | sigaddset (&mask, sig); | |
2131 | return mask; | |
2132 | } | |
2133 | #endif | |
2134 | ||
86a5659e JB |
2135 | int |
2136 | sys_sigpause (sigset_t new_mask) | |
2137 | { | |
2138 | /* pause emulating berk sigpause... */ | |
2139 | sigsuspend (&new_mask); | |
2140 | return (EINTR); | |
2141 | } | |
2142 | ||
2143 | /* I'd like to have these guys return pointers to the mask storage in here, | |
2144 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2145 | safe and pass the structure. It normally won't be more than 2 bytes | |
2146 | anyhow. - DJB */ | |
2147 | ||
2148 | sigset_t | |
2149 | sys_sigblock (sigset_t new_mask) | |
2150 | { | |
2151 | sigset_t old_mask; | |
2152 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2153 | return (old_mask); | |
2154 | } | |
2155 | ||
2156 | sigset_t | |
2157 | sys_sigunblock (sigset_t new_mask) | |
2158 | { | |
2159 | sigset_t old_mask; | |
2160 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2161 | return (old_mask); | |
2162 | } | |
2163 | ||
2164 | sigset_t | |
2165 | sys_sigsetmask (sigset_t new_mask) | |
2166 | { | |
2167 | sigset_t old_mask; | |
2168 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2169 | return (old_mask); | |
2170 | } | |
2171 | ||
2172 | #endif /* POSIX_SIGNALS */ | |
2173 | \f | |
2174 | #ifndef BSTRING | |
2175 | ||
2176 | void | |
2177 | bzero (b, length) | |
2178 | register char *b; | |
2179 | register int length; | |
2180 | { | |
2181 | #ifdef VMS | |
2182 | short zero = 0; | |
2183 | long max_str = 65535; | |
2184 | ||
2185 | while (length > max_str) { | |
2186 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2187 | length -= max_str; | |
2188 | b += max_str; | |
2189 | } | |
2190 | max_str = length; | |
2191 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2192 | #else | |
2193 | while (length-- > 0) | |
2194 | *b++ = 0; | |
2195 | #endif /* not VMS */ | |
2196 | } | |
2197 | ||
2198 | /* Saying `void' requires a declaration, above, where bcopy is used | |
2199 | and that declaration causes pain for systems where bcopy is a macro. */ | |
2200 | bcopy (b1, b2, length) | |
2201 | register char *b1; | |
2202 | register char *b2; | |
2203 | register int length; | |
2204 | { | |
2205 | #ifdef VMS | |
2206 | long max_str = 65535; | |
2207 | ||
2208 | while (length > max_str) { | |
2209 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
2210 | length -= max_str; | |
2211 | b1 += max_str; | |
2212 | b2 += max_str; | |
2213 | } | |
2214 | max_str = length; | |
2215 | (void) LIB$MOVC3 (&length, b1, b2); | |
2216 | #else | |
2217 | while (length-- > 0) | |
2218 | *b2++ = *b1++; | |
2219 | #endif /* not VMS */ | |
2220 | } | |
2221 | ||
2222 | int | |
2223 | bcmp (b1, b2, length) /* This could be a macro! */ | |
2224 | register char *b1; | |
2225 | register char *b2; | |
2226 | register int length; | |
2227 | { | |
2228 | #ifdef VMS | |
2229 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
2230 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
2231 | ||
2232 | return STR$COMPARE (&src1, &src2); | |
2233 | #else | |
2234 | while (length-- > 0) | |
2235 | if (*b1++ != *b2++) | |
2236 | return 1; | |
2237 | ||
2238 | return 0; | |
2239 | #endif /* not VMS */ | |
2240 | } | |
2241 | #endif /* not BSTRING */ | |
2242 | \f | |
9927a7b1 | 2243 | #ifndef HAVE_RANDOM |
86a5659e JB |
2244 | #ifdef USG |
2245 | /* | |
2246 | * The BSD random returns numbers in the range of | |
2247 | * 0 to 2e31 - 1. The USG rand returns numbers in the | |
2248 | * range of 0 to 2e15 - 1. This is probably not significant | |
2249 | * in this usage. | |
2250 | */ | |
2251 | ||
2252 | long | |
2253 | random () | |
2254 | { | |
2255 | /* Arrange to return a range centered on zero. */ | |
2256 | return (rand () << 15) + rand () - (1 << 29); | |
2257 | } | |
2258 | ||
2259 | srandom (arg) | |
2260 | int arg; | |
2261 | { | |
2262 | srand (arg); | |
2263 | } | |
2264 | ||
2265 | #endif /* USG */ | |
2266 | ||
2267 | #ifdef BSD4_1 | |
2268 | long random () | |
2269 | { | |
2270 | /* Arrange to return a range centered on zero. */ | |
2271 | return (rand () << 15) + rand () - (1 << 29); | |
2272 | } | |
2273 | ||
2274 | srandom (arg) | |
2275 | int arg; | |
2276 | { | |
2277 | srand (arg); | |
2278 | } | |
2279 | #endif /* BSD4_1 */ | |
9927a7b1 | 2280 | #endif |
86a5659e JB |
2281 | \f |
2282 | #ifdef WRONG_NAME_INSQUE | |
2283 | ||
2284 | insque (q,p) | |
2285 | caddr_t q,p; | |
2286 | { | |
2287 | _insque (q,p); | |
2288 | } | |
2289 | ||
2290 | #endif | |
2291 | \f | |
2292 | #ifdef VMS | |
2293 | ||
2294 | #ifdef getenv | |
2295 | /* If any place else asks for the TERM variable, | |
2296 | allow it to be overridden with the EMACS_TERM variable | |
2297 | before attempting to translate the logical name TERM. As a last | |
2298 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2299 | #undef getenv | |
2300 | char * | |
2301 | sys_getenv (name) | |
2302 | char *name; | |
2303 | { | |
2304 | register char *val; | |
2305 | static char buf[256]; | |
2306 | static struct dsc$descriptor_s equiv | |
2307 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2308 | static struct dsc$descriptor_s d_name | |
2309 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2310 | short eqlen; | |
2311 | ||
2312 | if (!strcmp (name, "TERM")) | |
2313 | { | |
2314 | val = (char *) getenv ("EMACS_TERM"); | |
2315 | if (val) | |
2316 | return val; | |
2317 | } | |
2318 | ||
2319 | d_name.dsc$w_length = strlen (name); | |
2320 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2321 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2322 | { |
2323 | char *str = (char *) xmalloc (eqlen + 1); | |
2324 | bcopy (buf, str, eqlen); | |
2325 | str[eqlen] = '\0'; | |
2326 | /* This is a storage leak, but a pain to fix. With luck, | |
2327 | no one will ever notice. */ | |
2328 | return str; | |
2329 | } | |
2330 | return (char *) getenv (name); | |
2331 | } | |
2332 | #endif /* getenv */ | |
2333 | ||
2334 | #ifdef abort | |
2335 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2336 | to force a call on the debugger from within the image. */ | |
2337 | #undef abort | |
2338 | sys_abort () | |
2339 | { | |
2340 | reset_sys_modes (); | |
2341 | LIB$SIGNAL (SS$_DEBUG); | |
2342 | } | |
2343 | #endif /* abort */ | |
2344 | #endif /* VMS */ | |
2345 | \f | |
2346 | #ifdef VMS | |
2347 | #ifdef LINK_CRTL_SHARE | |
2348 | #ifdef SHAREABLE_LIB_BUG | |
2349 | /* Variables declared noshare and initialized in shareable libraries | |
2350 | cannot be shared. The VMS linker incorrectly forces you to use a private | |
2351 | version which is uninitialized... If not for this "feature", we | |
2352 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2353 | int sys_nerr = 35; | |
2354 | char *sys_errlist[] = | |
2355 | { | |
2356 | "error 0", | |
2357 | "not owner", | |
2358 | "no such file or directory", | |
2359 | "no such process", | |
2360 | "interrupted system call", | |
2361 | "i/o error", | |
2362 | "no such device or address", | |
2363 | "argument list too long", | |
2364 | "exec format error", | |
2365 | "bad file number", | |
2366 | "no child process", | |
2367 | "no more processes", | |
2368 | "not enough memory", | |
2369 | "permission denied", | |
2370 | "bad address", | |
2371 | "block device required", | |
2372 | "mount devices busy", | |
2373 | "file exists", | |
2374 | "cross-device link", | |
2375 | "no such device", | |
2376 | "not a directory", | |
2377 | "is a directory", | |
2378 | "invalid argument", | |
2379 | "file table overflow", | |
2380 | "too many open files", | |
2381 | "not a typewriter", | |
2382 | "text file busy", | |
2383 | "file too big", | |
2384 | "no space left on device", | |
2385 | "illegal seek", | |
2386 | "read-only file system", | |
2387 | "too many links", | |
2388 | "broken pipe", | |
2389 | "math argument", | |
2390 | "result too large", | |
2391 | "I/O stream empty", | |
2392 | "vax/vms specific error code nontranslatable error" | |
2393 | }; | |
2394 | #endif /* SHAREABLE_LIB_BUG */ | |
2395 | #endif /* LINK_CRTL_SHARE */ | |
2396 | #endif /* VMS */ | |
2397 | \f | |
2398 | #ifdef INTERRUPTIBLE_OPEN | |
2399 | ||
2400 | int | |
2401 | /* VARARGS 2 */ | |
2402 | sys_open (path, oflag, mode) | |
2403 | char *path; | |
2404 | int oflag, mode; | |
2405 | { | |
2406 | register int rtnval; | |
2407 | ||
2408 | while ((rtnval = open (path, oflag, mode)) == -1 | |
2409 | && (errno == EINTR)); | |
2410 | return (rtnval); | |
2411 | } | |
2412 | ||
2413 | #endif /* INTERRUPTIBLE_OPEN */ | |
2414 | ||
2415 | #ifdef INTERRUPTIBLE_CLOSE | |
2416 | ||
2417 | sys_close (fd) | |
2418 | int fd; | |
2419 | { | |
2420 | register int rtnval; | |
2421 | ||
2422 | while ((rtnval = close (fd)) == -1 | |
2423 | && (errno == EINTR)); | |
2424 | return rtnval; | |
2425 | } | |
2426 | ||
2427 | #endif /* INTERRUPTIBLE_CLOSE */ | |
2428 | ||
2429 | #ifdef INTERRUPTIBLE_IO | |
2430 | ||
2431 | int | |
2432 | sys_read (fildes, buf, nbyte) | |
2433 | int fildes; | |
2434 | char *buf; | |
2435 | unsigned int nbyte; | |
2436 | { | |
2437 | register int rtnval; | |
2438 | ||
2439 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
2440 | && (errno == EINTR)); | |
2441 | return (rtnval); | |
2442 | } | |
2443 | ||
2444 | int | |
2445 | sys_write (fildes, buf, nbyte) | |
2446 | int fildes; | |
2447 | char *buf; | |
2448 | unsigned int nbyte; | |
2449 | { | |
2450 | register int rtnval; | |
2451 | ||
2452 | while ((rtnval = write (fildes, buf, nbyte)) == -1 | |
2453 | && (errno == EINTR)); | |
2454 | return (rtnval); | |
2455 | } | |
2456 | ||
2457 | #endif /* INTERRUPTIBLE_IO */ | |
2458 | \f | |
2459 | #ifdef USG | |
2460 | /* | |
2461 | * All of the following are for USG. | |
2462 | * | |
2463 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2464 | * that the user program has elected to catch. Thus the system call | |
2465 | * must be retried in these cases. To handle this without massive | |
2466 | * changes in the source code, we remap the standard system call names | |
2467 | * to names for our own functions in sysdep.c that do the system call | |
2468 | * with retries. Actually, for portability reasons, it is good | |
2469 | * programming practice, as this example shows, to limit all actual | |
2470 | * system calls to a single occurance in the source. Sure, this | |
2471 | * adds an extra level of function call overhead but it is almost | |
2472 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2473 | */ | |
2474 | ||
00eaaa32 | 2475 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
2476 | char *sys_siglist[NSIG + 1] = |
2477 | { | |
2478 | #ifdef AIX | |
2479 | /* AIX has changed the signals a bit */ | |
2480 | "bogus signal", /* 0 */ | |
2481 | "hangup", /* 1 SIGHUP */ | |
2482 | "interrupt", /* 2 SIGINT */ | |
2483 | "quit", /* 3 SIGQUIT */ | |
2484 | "illegal instruction", /* 4 SIGILL */ | |
2485 | "trace trap", /* 5 SIGTRAP */ | |
2486 | "IOT instruction", /* 6 SIGIOT */ | |
2487 | "crash likely", /* 7 SIGDANGER */ | |
2488 | "floating point exception", /* 8 SIGFPE */ | |
2489 | "kill", /* 9 SIGKILL */ | |
2490 | "bus error", /* 10 SIGBUS */ | |
2491 | "segmentation violation", /* 11 SIGSEGV */ | |
2492 | "bad argument to system call", /* 12 SIGSYS */ | |
2493 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2494 | "alarm clock", /* 14 SIGALRM */ | |
2495 | "software termination signum", /* 15 SIGTERM */ | |
2496 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2497 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2498 | "death of a child", /* 18 SIGCLD */ | |
2499 | "power-fail restart", /* 19 SIGPWR */ | |
2500 | "bogus signal", /* 20 */ | |
2501 | "bogus signal", /* 21 */ | |
2502 | "bogus signal", /* 22 */ | |
2503 | "bogus signal", /* 23 */ | |
2504 | "bogus signal", /* 24 */ | |
2505 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
2506 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
2507 | "I/O intervention required", /* 27 SIGIOINT */ | |
2508 | "HFT grant", /* 28 SIGGRANT */ | |
2509 | "HFT retract", /* 29 SIGRETRACT */ | |
2510 | "HFT sound done", /* 30 SIGSOUND */ | |
2511 | "HFT input ready", /* 31 SIGMSG */ | |
2512 | #else /* not AIX */ | |
2513 | "bogus signal", /* 0 */ | |
2514 | "hangup", /* 1 SIGHUP */ | |
2515 | "interrupt", /* 2 SIGINT */ | |
2516 | "quit", /* 3 SIGQUIT */ | |
2517 | "illegal instruction", /* 4 SIGILL */ | |
2518 | "trace trap", /* 5 SIGTRAP */ | |
2519 | "IOT instruction", /* 6 SIGIOT */ | |
2520 | "EMT instruction", /* 7 SIGEMT */ | |
2521 | "floating point exception", /* 8 SIGFPE */ | |
2522 | "kill", /* 9 SIGKILL */ | |
2523 | "bus error", /* 10 SIGBUS */ | |
2524 | "segmentation violation", /* 11 SIGSEGV */ | |
2525 | "bad argument to system call", /* 12 SIGSYS */ | |
2526 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2527 | "alarm clock", /* 14 SIGALRM */ | |
2528 | "software termination signum", /* 15 SIGTERM */ | |
2529 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2530 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2531 | "death of a child", /* 18 SIGCLD */ | |
2532 | "power-fail restart", /* 19 SIGPWR */ | |
2533 | #endif /* not AIX */ | |
2534 | 0 | |
2535 | }; | |
70080de1 | 2536 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
2537 | |
2538 | /* | |
2539 | * Warning, this function may not duplicate 4.2 action properly | |
2540 | * under error conditions. | |
2541 | */ | |
2542 | ||
2543 | #ifndef MAXPATHLEN | |
2544 | /* In 4.1, param.h fails to define this. */ | |
2545 | #define MAXPATHLEN 1024 | |
2546 | #endif | |
2547 | ||
2548 | #ifndef HAVE_GETWD | |
2549 | ||
2550 | char * | |
2551 | getwd (pathname) | |
2552 | char *pathname; | |
2553 | { | |
2554 | char *npath, *spath; | |
2555 | extern char *getcwd (); | |
2556 | ||
9ac0d9e0 | 2557 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e JB |
2558 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
2559 | /* On Altos 3068, getcwd can return @hostname/dir, so discard | |
2560 | up to first slash. Should be harmless on other systems. */ | |
2561 | while (*npath && *npath != '/') | |
2562 | npath++; | |
2563 | strcpy (pathname, npath); | |
2564 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2565 | UNBLOCK_INPUT; |
86a5659e JB |
2566 | return pathname; |
2567 | } | |
2568 | ||
2569 | #endif /* HAVE_GETWD */ | |
2570 | ||
2571 | /* | |
2572 | * Emulate rename using unlink/link. Note that this is | |
2573 | * only partially correct. Also, doesn't enforce restriction | |
2574 | * that files be of same type (regular->regular, dir->dir, etc). | |
2575 | */ | |
2576 | ||
4746118a JB |
2577 | #ifndef HAVE_RENAME |
2578 | ||
86a5659e JB |
2579 | rename (from, to) |
2580 | char *from; | |
2581 | char *to; | |
2582 | { | |
2583 | if (access (from, 0) == 0) | |
2584 | { | |
2585 | unlink (to); | |
2586 | if (link (from, to) == 0) | |
2587 | if (unlink (from) == 0) | |
2588 | return (0); | |
2589 | } | |
2590 | return (-1); | |
2591 | } | |
2592 | ||
4746118a JB |
2593 | #endif |
2594 | ||
86a5659e JB |
2595 | #ifndef HAVE_VFORK |
2596 | ||
2597 | /* | |
2598 | * Substitute fork for vfork on USG flavors. | |
2599 | */ | |
2600 | ||
2601 | vfork () | |
2602 | { | |
2603 | return (fork ()); | |
2604 | } | |
2605 | ||
2606 | #endif /* not HAVE_VFORK */ | |
2607 | ||
2608 | #ifdef MISSING_UTIMES | |
2609 | ||
2610 | /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */ | |
2611 | ||
2612 | utimes () | |
2613 | { | |
2614 | } | |
2615 | #endif | |
2616 | ||
2617 | #ifdef IRIS_UTIME | |
2618 | ||
2619 | /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the | |
2620 | utimbuf structure defined anywhere but in the man page. */ | |
2621 | ||
2622 | struct utimbuf | |
2623 | { | |
2624 | long actime; | |
2625 | long modtime; | |
2626 | }; | |
2627 | ||
2628 | utimes (name, tvp) | |
2629 | char *name; | |
2630 | struct timeval tvp[]; | |
2631 | { | |
2632 | struct utimbuf utb; | |
2633 | utb.actime = tvp[0].tv_sec; | |
2634 | utb.modtime = tvp[1].tv_sec; | |
2635 | utime (name, &utb); | |
2636 | } | |
2637 | #endif /* IRIS_UTIME */ | |
2638 | ||
2639 | ||
2640 | #ifdef HPUX | |
2641 | #ifndef HAVE_PERROR | |
2642 | ||
2643 | /* HPUX curses library references perror, but as far as we know | |
2644 | it won't be called. Anyway this definition will do for now. */ | |
2645 | ||
2646 | perror () | |
2647 | { | |
2648 | } | |
2649 | ||
2650 | #endif /* not HAVE_PERROR */ | |
2651 | #endif /* HPUX */ | |
2652 | ||
2653 | #ifndef HAVE_DUP2 | |
2654 | ||
2655 | /* | |
2656 | * Emulate BSD dup2. First close newd if it already exists. | |
2657 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
2658 | * until we are, then close the unsuccessful ones. | |
2659 | */ | |
2660 | ||
2661 | dup2 (oldd, newd) | |
2662 | int oldd; | |
2663 | int newd; | |
2664 | { | |
2665 | register int fd, ret; | |
2666 | ||
2667 | sys_close (newd); | |
2668 | ||
2669 | #ifdef F_DUPFD | |
2670 | fd = fcntl (oldd, F_DUPFD, newd); | |
2671 | if (fd != newd) | |
2672 | error ("can't dup2 (%i,%i) : %s", oldd, newd, sys_errlist[errno]); | |
2673 | #else | |
2674 | fd = dup (old); | |
2675 | if (fd == -1) | |
2676 | return -1; | |
2677 | if (fd == new) | |
2678 | return new; | |
2679 | ret = dup2 (old,new); | |
2680 | sys_close (fd); | |
2681 | return ret; | |
2682 | #endif | |
2683 | } | |
2684 | ||
2685 | #endif /* not HAVE_DUP2 */ | |
2686 | ||
2687 | /* | |
2688 | * Gettimeofday. Simulate as much as possible. Only accurate | |
2689 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
2690 | * Only needed when subprocesses are defined. | |
2691 | */ | |
2692 | ||
2693 | #ifdef subprocesses | |
2694 | #ifndef VMS | |
2695 | #ifndef HAVE_GETTIMEOFDAY | |
2696 | #ifdef HAVE_TIMEVAL | |
2697 | ||
2698 | /* ARGSUSED */ | |
2699 | gettimeofday (tp, tzp) | |
2700 | struct timeval *tp; | |
2701 | struct timezone *tzp; | |
2702 | { | |
2703 | extern long time (); | |
2704 | ||
2705 | tp->tv_sec = time ((long *)0); | |
2706 | tp->tv_usec = 0; | |
4ca7594f RS |
2707 | if (tzp != 0) |
2708 | tzp->tz_minuteswest = -1; | |
86a5659e JB |
2709 | } |
2710 | ||
2711 | #endif | |
2712 | #endif | |
2713 | #endif | |
2714 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
2715 | ||
2716 | /* | |
2717 | * This function will go away as soon as all the stubs fixed. (fnf) | |
2718 | */ | |
2719 | ||
2720 | croak (badfunc) | |
2721 | char *badfunc; | |
2722 | { | |
2723 | printf ("%s not yet implemented\r\n", badfunc); | |
2724 | reset_sys_modes (); | |
2725 | exit (1); | |
2726 | } | |
2727 | ||
2728 | #endif /* USG */ | |
2729 | \f | |
2730 | #ifdef DGUX | |
2731 | ||
2732 | char *sys_siglist[NSIG + 1] = | |
2733 | { | |
2734 | "null signal", /* 0 SIGNULL */ | |
2735 | "hangup", /* 1 SIGHUP */ | |
2736 | "interrupt", /* 2 SIGINT */ | |
2737 | "quit", /* 3 SIGQUIT */ | |
2738 | "illegal instruction", /* 4 SIGILL */ | |
2739 | "trace trap", /* 5 SIGTRAP */ | |
2740 | "abort termination", /* 6 SIGABRT */ | |
2741 | "SIGEMT", /* 7 SIGEMT */ | |
2742 | "floating point exception", /* 8 SIGFPE */ | |
2743 | "kill", /* 9 SIGKILL */ | |
2744 | "bus error", /* 10 SIGBUS */ | |
2745 | "segmentation violation", /* 11 SIGSEGV */ | |
2746 | "bad argument to system call", /* 12 SIGSYS */ | |
2747 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
2748 | "alarm clock", /* 14 SIGALRM */ | |
2749 | "software termination signal", /* 15 SIGTERM */ | |
2750 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2751 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2752 | "child stopped or terminated", /* 18 SIGCLD */ | |
2753 | "power-fail restart", /* 19 SIGPWR */ | |
2754 | "window size changed", /* 20 SIGWINCH */ | |
2755 | "undefined", /* 21 */ | |
2756 | "pollable event occured", /* 22 SIGPOLL */ | |
2757 | "sendable stop signal not from tty", /* 23 SIGSTOP */ | |
2758 | "stop signal from tty", /* 24 SIGSTP */ | |
2759 | "continue a stopped process", /* 25 SIGCONT */ | |
2760 | "attempted background tty read", /* 26 SIGTTIN */ | |
2761 | "attempted background tty write", /* 27 SIGTTOU */ | |
2762 | "undefined", /* 28 */ | |
2763 | "undefined", /* 29 */ | |
2764 | "undefined", /* 30 */ | |
2765 | "undefined", /* 31 */ | |
2766 | "undefined", /* 32 */ | |
2767 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
2768 | "I/O is possible", /* 34 SIGIO */ | |
2769 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
2770 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
2771 | "virtual time alarm", /* 37 SIGVTALRM */ | |
2772 | "profiling time alarm", /* 38 SIGPROF */ | |
2773 | "undefined", /* 39 */ | |
2774 | "file record locks revoked", /* 40 SIGLOST */ | |
2775 | "undefined", /* 41 */ | |
2776 | "undefined", /* 42 */ | |
2777 | "undefined", /* 43 */ | |
2778 | "undefined", /* 44 */ | |
2779 | "undefined", /* 45 */ | |
2780 | "undefined", /* 46 */ | |
2781 | "undefined", /* 47 */ | |
2782 | "undefined", /* 48 */ | |
2783 | "undefined", /* 49 */ | |
2784 | "undefined", /* 50 */ | |
2785 | "undefined", /* 51 */ | |
2786 | "undefined", /* 52 */ | |
2787 | "undefined", /* 53 */ | |
2788 | "undefined", /* 54 */ | |
2789 | "undefined", /* 55 */ | |
2790 | "undefined", /* 56 */ | |
2791 | "undefined", /* 57 */ | |
2792 | "undefined", /* 58 */ | |
2793 | "undefined", /* 59 */ | |
2794 | "undefined", /* 60 */ | |
2795 | "undefined", /* 61 */ | |
2796 | "undefined", /* 62 */ | |
2797 | "undefined", /* 63 */ | |
2798 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
2799 | 0 | |
2800 | }; | |
2801 | ||
2802 | #endif /* DGUX */ | |
2803 | \f | |
2804 | /* Directory routines for systems that don't have them. */ | |
2805 | ||
2806 | #ifdef SYSV_SYSTEM_DIR | |
2807 | ||
2808 | #include <dirent.h> | |
2809 | ||
2810 | #ifndef AIX | |
2811 | int | |
2812 | closedir (dirp) | |
2813 | register DIR *dirp; /* stream from opendir */ | |
2814 | { | |
2815 | sys_close (dirp->dd_fd); | |
9ac0d9e0 JB |
2816 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ |
2817 | xfree ((char *) dirp); | |
86a5659e JB |
2818 | } |
2819 | #endif /* not AIX */ | |
2820 | #endif /* SYSV_SYSTEM_DIR */ | |
2821 | ||
2822 | #ifdef NONSYSTEM_DIR_LIBRARY | |
2823 | ||
2824 | DIR * | |
2825 | opendir (filename) | |
2826 | char *filename; /* name of directory */ | |
2827 | { | |
2828 | register DIR *dirp; /* -> malloc'ed storage */ | |
2829 | register int fd; /* file descriptor for read */ | |
2830 | struct stat sbuf; /* result of fstat */ | |
2831 | ||
2832 | fd = sys_open (filename, 0); | |
2833 | if (fd < 0) | |
2834 | return 0; | |
2835 | ||
9ac0d9e0 | 2836 | BLOCK_INPUT; |
86a5659e JB |
2837 | if (fstat (fd, &sbuf) < 0 |
2838 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
2839 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
2840 | { | |
2841 | sys_close (fd); | |
9ac0d9e0 | 2842 | UNBLOCK_INPUT; |
86a5659e JB |
2843 | return 0; /* bad luck today */ |
2844 | } | |
9ac0d9e0 | 2845 | UNBLOCK_INPUT; |
86a5659e JB |
2846 | |
2847 | dirp->dd_fd = fd; | |
2848 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
2849 | ||
2850 | return dirp; | |
2851 | } | |
2852 | ||
2853 | void | |
2854 | closedir (dirp) | |
2855 | register DIR *dirp; /* stream from opendir */ | |
2856 | { | |
2857 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 2858 | xfree ((char *) dirp); |
86a5659e JB |
2859 | } |
2860 | ||
2861 | ||
2862 | #ifndef VMS | |
2863 | #define DIRSIZ 14 | |
2864 | struct olddir | |
2865 | { | |
2866 | ino_t od_ino; /* inode */ | |
2867 | char od_name[DIRSIZ]; /* filename */ | |
2868 | }; | |
2869 | #endif /* not VMS */ | |
2870 | ||
2871 | struct direct dir_static; /* simulated directory contents */ | |
2872 | ||
2873 | /* ARGUSED */ | |
2874 | struct direct * | |
2875 | readdir (dirp) | |
2876 | register DIR *dirp; /* stream from opendir */ | |
2877 | { | |
2878 | #ifndef VMS | |
2879 | register struct olddir *dp; /* -> directory data */ | |
2880 | #else /* VMS */ | |
2881 | register struct dir$_name *dp; /* -> directory data */ | |
2882 | register struct dir$_version *dv; /* -> version data */ | |
2883 | #endif /* VMS */ | |
2884 | ||
2885 | for (; ;) | |
2886 | { | |
2887 | if (dirp->dd_loc >= dirp->dd_size) | |
2888 | dirp->dd_loc = dirp->dd_size = 0; | |
2889 | ||
2890 | if (dirp->dd_size == 0 /* refill buffer */ | |
2891 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
2892 | return 0; | |
2893 | ||
2894 | #ifndef VMS | |
2895 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
2896 | dirp->dd_loc += sizeof (struct olddir); | |
2897 | ||
2898 | if (dp->od_ino != 0) /* not deleted entry */ | |
2899 | { | |
2900 | dir_static.d_ino = dp->od_ino; | |
2901 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
2902 | dir_static.d_name[DIRSIZ] = '\0'; | |
2903 | dir_static.d_namlen = strlen (dir_static.d_name); | |
2904 | dir_static.d_reclen = sizeof (struct direct) | |
2905 | - MAXNAMLEN + 3 | |
2906 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
2907 | return &dir_static; /* -> simulated structure */ | |
2908 | } | |
2909 | #else /* VMS */ | |
2910 | dp = (struct dir$_name *) dirp->dd_buf; | |
2911 | if (dirp->dd_loc == 0) | |
2912 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
2913 | : dp->dir$b_namecount; | |
2914 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
2915 | dir_static.d_ino = dv->dir$w_fid_num; | |
2916 | dir_static.d_namlen = dp->dir$b_namecount; | |
2917 | dir_static.d_reclen = sizeof (struct direct) | |
2918 | - MAXNAMLEN + 3 | |
2919 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
2920 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
2921 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
2922 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
2923 | return &dir_static; | |
2924 | #endif /* VMS */ | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | #ifdef VMS | |
2929 | /* readdirver is just like readdir except it returns all versions of a file | |
2930 | as separate entries. */ | |
2931 | ||
2932 | /* ARGUSED */ | |
2933 | struct direct * | |
2934 | readdirver (dirp) | |
2935 | register DIR *dirp; /* stream from opendir */ | |
2936 | { | |
2937 | register struct dir$_name *dp; /* -> directory data */ | |
2938 | register struct dir$_version *dv; /* -> version data */ | |
2939 | ||
2940 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
2941 | dirp->dd_loc = dirp->dd_size = 0; | |
2942 | ||
2943 | if (dirp->dd_size == 0 /* refill buffer */ | |
2944 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
2945 | return 0; | |
2946 | ||
2947 | dp = (struct dir$_name *) dirp->dd_buf; | |
2948 | if (dirp->dd_loc == 0) | |
2949 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
2950 | : dp->dir$b_namecount; | |
2951 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
2952 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
2953 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
2954 | dir_static.d_namlen = strlen (dir_static.d_name); | |
2955 | dir_static.d_ino = dv->dir$w_fid_num; | |
2956 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
2957 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
2958 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
2959 | return &dir_static; | |
2960 | } | |
2961 | ||
2962 | #endif /* VMS */ | |
2963 | ||
2964 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
2965 | \f | |
2966 | /* Functions for VMS */ | |
2967 | #ifdef VMS | |
91bac16a | 2968 | #include "vms-pwd.h" |
86a5659e JB |
2969 | #include <acldef.h> |
2970 | #include <chpdef.h> | |
2971 | #include <jpidef.h> | |
2972 | ||
2973 | /* Return as a string the VMS error string pertaining to STATUS. | |
2974 | Reuses the same static buffer each time it is called. */ | |
2975 | ||
2976 | char * | |
2977 | vmserrstr (status) | |
2978 | int status; /* VMS status code */ | |
2979 | { | |
2980 | int bufadr[2]; | |
2981 | short len; | |
2982 | static char buf[257]; | |
2983 | ||
2984 | bufadr[0] = sizeof buf - 1; | |
2985 | bufadr[1] = (int) buf; | |
2986 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
2987 | return "untranslatable VMS error status"; | |
2988 | buf[len] = '\0'; | |
2989 | return buf; | |
2990 | } | |
2991 | ||
2992 | #ifdef access | |
2993 | #undef access | |
2994 | ||
2995 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
2996 | * not work correctly. (It also doesn't work well in version 2.3.) | |
2997 | */ | |
2998 | ||
2999 | #ifdef VMS4_4 | |
3000 | ||
3001 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3002 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3003 | ||
3004 | typedef union { | |
3005 | struct { | |
3006 | unsigned short s_buflen; | |
3007 | unsigned short s_code; | |
3008 | char *s_bufadr; | |
3009 | unsigned short *s_retlenadr; | |
3010 | } s; | |
3011 | int end; | |
3012 | } item; | |
3013 | #define buflen s.s_buflen | |
3014 | #define code s.s_code | |
3015 | #define bufadr s.s_bufadr | |
3016 | #define retlenadr s.s_retlenadr | |
3017 | ||
3018 | #define R_OK 4 /* test for read permission */ | |
3019 | #define W_OK 2 /* test for write permission */ | |
3020 | #define X_OK 1 /* test for execute (search) permission */ | |
3021 | #define F_OK 0 /* test for presence of file */ | |
3022 | ||
3023 | int | |
3024 | sys_access (path, mode) | |
3025 | char *path; | |
3026 | int mode; | |
3027 | { | |
3028 | static char *user = NULL; | |
3029 | char dir_fn[512]; | |
3030 | ||
3031 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3032 | * access can treat the directory like a file. */ | |
3033 | if (directory_file_name (path, dir_fn)) | |
3034 | path = dir_fn; | |
3035 | ||
3036 | if (mode == F_OK) | |
3037 | return access (path, mode); | |
3038 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3039 | return -1; | |
3040 | { | |
3041 | int stat; | |
3042 | int flags; | |
3043 | int acces; | |
3044 | unsigned short int dummy; | |
3045 | item itemlst[3]; | |
3046 | static int constant = ACL$C_FILE; | |
3047 | DESCRIPTOR (path_desc, path); | |
3048 | DESCRIPTOR (user_desc, user); | |
3049 | ||
3050 | flags = 0; | |
3051 | acces = 0; | |
3052 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3053 | return stat; | |
3054 | if (mode & R_OK) | |
3055 | acces |= CHP$M_READ; | |
3056 | if (mode & W_OK) | |
3057 | acces |= CHP$M_WRITE; | |
3058 | itemlst[0].buflen = sizeof (int); | |
3059 | itemlst[0].code = CHP$_FLAGS; | |
3060 | itemlst[0].bufadr = (char *) &flags; | |
3061 | itemlst[0].retlenadr = &dummy; | |
3062 | itemlst[1].buflen = sizeof (int); | |
3063 | itemlst[1].code = CHP$_ACCESS; | |
3064 | itemlst[1].bufadr = (char *) &acces; | |
3065 | itemlst[1].retlenadr = &dummy; | |
3066 | itemlst[2].end = CHP$_END; | |
3067 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3068 | return stat == SS$_NORMAL ? 0 : -1; | |
3069 | } | |
3070 | } | |
3071 | ||
3072 | #else /* not VMS4_4 */ | |
3073 | ||
3074 | #include <prvdef.h> | |
3075 | #define ACE$M_WRITE 2 | |
3076 | #define ACE$C_KEYID 1 | |
3077 | ||
3078 | static unsigned short memid, grpid; | |
3079 | static unsigned int uic; | |
3080 | ||
3081 | /* Called from init_sys_modes, so it happens not very often | |
3082 | but at least each time Emacs is loaded. */ | |
3083 | sys_access_reinit () | |
3084 | { | |
3085 | uic = 0; | |
3086 | } | |
3087 | ||
3088 | int | |
3089 | sys_access (filename, type) | |
3090 | char * filename; | |
3091 | int type; | |
3092 | { | |
3093 | struct FAB fab; | |
3094 | struct XABPRO xab; | |
3095 | int status, size, i, typecode, acl_controlled; | |
3096 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3097 | union prvdef prvmask; | |
3098 | ||
3099 | /* Get UIC and GRP values for protection checking. */ | |
3100 | if (uic == 0) | |
3101 | { | |
3102 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3103 | if (! (status & 1)) | |
3104 | return -1; | |
3105 | memid = uic & 0xFFFF; | |
3106 | grpid = uic >> 16; | |
3107 | } | |
3108 | ||
3109 | if (type != 2) /* not checking write access */ | |
3110 | return access (filename, type); | |
3111 | ||
3112 | /* Check write protection. */ | |
3113 | ||
3114 | #define CHECKPRIV(bit) (prvmask.bit) | |
3115 | #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) | |
3116 | ||
3117 | /* Find privilege bits */ | |
986ffb24 | 3118 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3119 | if (! (status & 1)) |
3120 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3121 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3122 | return 0; /* BYPASS enabled */ | |
3123 | fab = cc$rms_fab; | |
3124 | fab.fab$b_fac = FAB$M_GET; | |
3125 | fab.fab$l_fna = filename; | |
3126 | fab.fab$b_fns = strlen (filename); | |
3127 | fab.fab$l_xab = &xab; | |
3128 | xab = cc$rms_xabpro; | |
3129 | xab.xab$l_aclbuf = aclbuf; | |
3130 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3131 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3132 | if (! (status & 1)) |
3133 | return -1; | |
986ffb24 | 3134 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3135 | /* Check system access */ |
3136 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS)) | |
3137 | return 0; | |
3138 | /* Check ACL entries, if any */ | |
3139 | acl_controlled = 0; | |
3140 | if (xab.xab$w_acllen > 0) | |
3141 | { | |
3142 | aclptr = aclbuf; | |
3143 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3144 | while (*aclptr && aclptr < aclend) | |
3145 | { | |
3146 | size = (*aclptr & 0xff) / 4; | |
3147 | typecode = (*aclptr >> 8) & 0xff; | |
3148 | if (typecode == ACE$C_KEYID) | |
3149 | for (i = size - 1; i > 1; i--) | |
3150 | if (aclptr[i] == uic) | |
3151 | { | |
3152 | acl_controlled = 1; | |
3153 | if (aclptr[1] & ACE$M_WRITE) | |
3154 | return 0; /* Write access through ACL */ | |
3155 | } | |
3156 | aclptr = &aclptr[size]; | |
3157 | } | |
3158 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3159 | return -1; | |
3160 | } | |
3161 | /* No ACL entries specified, check normal protection */ | |
3162 | if (WRITEABLE (XAB$V_WLD)) /* World writeable */ | |
3163 | return 0; | |
3164 | if (WRITEABLE (XAB$V_GRP) && | |
3165 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) | |
3166 | return 0; /* Group writeable */ | |
3167 | if (WRITEABLE (XAB$V_OWN) && | |
3168 | (xab.xab$l_uic & 0xFFFF) == memid) | |
3169 | return 0; /* Owner writeable */ | |
3170 | ||
3171 | return -1; /* Not writeable */ | |
3172 | } | |
3173 | #endif /* not VMS4_4 */ | |
3174 | #endif /* access */ | |
3175 | ||
3176 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3177 | ||
3178 | /* translate a vms file spec to a unix path */ | |
3179 | char * | |
3180 | sys_translate_vms (vfile) | |
3181 | char * vfile; | |
3182 | { | |
3183 | char * p; | |
3184 | char * targ; | |
3185 | ||
3186 | if (!vfile) | |
3187 | return 0; | |
3188 | ||
3189 | targ = vtbuf; | |
3190 | ||
3191 | /* leading device or logical name is a root directory */ | |
3192 | if (p = strchr (vfile, ':')) | |
3193 | { | |
3194 | *targ++ = '/'; | |
3195 | while (vfile < p) | |
3196 | *targ++ = *vfile++; | |
3197 | vfile++; | |
3198 | *targ++ = '/'; | |
3199 | } | |
3200 | p = vfile; | |
3201 | if (*p == '[' || *p == '<') | |
3202 | { | |
3203 | while (*++vfile != *p + 2) | |
3204 | switch (*vfile) | |
3205 | { | |
3206 | case '.': | |
3207 | if (vfile[-1] == *p) | |
3208 | *targ++ = '.'; | |
3209 | *targ++ = '/'; | |
3210 | break; | |
3211 | ||
3212 | case '-': | |
3213 | *targ++ = '.'; | |
3214 | *targ++ = '.'; | |
3215 | break; | |
3216 | ||
3217 | default: | |
3218 | *targ++ = *vfile; | |
3219 | break; | |
3220 | } | |
3221 | vfile++; | |
3222 | *targ++ = '/'; | |
3223 | } | |
3224 | while (*vfile) | |
3225 | *targ++ = *vfile++; | |
3226 | ||
3227 | return vtbuf; | |
3228 | } | |
3229 | ||
3230 | static char utbuf[NAM$C_MAXRSS+1]; | |
3231 | ||
3232 | /* translate a unix path to a VMS file spec */ | |
3233 | char * | |
3234 | sys_translate_unix (ufile) | |
3235 | char * ufile; | |
3236 | { | |
3237 | int slash_seen = 0; | |
3238 | char *p; | |
3239 | char * targ; | |
3240 | ||
3241 | if (!ufile) | |
3242 | return 0; | |
3243 | ||
3244 | targ = utbuf; | |
3245 | ||
3246 | if (*ufile == '/') | |
3247 | { | |
3248 | ufile++; | |
3249 | } | |
3250 | ||
3251 | while (*ufile) | |
3252 | { | |
3253 | switch (*ufile) | |
3254 | { | |
3255 | case '/': | |
3256 | if (slash_seen) | |
3257 | if (index (&ufile[1], '/')) | |
3258 | *targ++ = '.'; | |
3259 | else | |
3260 | *targ++ = ']'; | |
3261 | else | |
3262 | { | |
3263 | *targ++ = ':'; | |
3264 | if (index (&ufile[1], '/')) | |
3265 | *targ++ = '['; | |
3266 | slash_seen = 1; | |
3267 | } | |
3268 | break; | |
3269 | ||
3270 | case '.': | |
3271 | if (strncmp (ufile, "./", 2) == 0) | |
3272 | { | |
3273 | if (!slash_seen) | |
3274 | { | |
3275 | *targ++ = '['; | |
3276 | slash_seen = 1; | |
3277 | } | |
3278 | ufile++; /* skip the dot */ | |
3279 | if (index (&ufile[1], '/')) | |
3280 | *targ++ = '.'; | |
3281 | else | |
3282 | *targ++ = ']'; | |
3283 | } | |
3284 | else if (strncmp (ufile, "../", 3) == 0) | |
3285 | { | |
3286 | if (!slash_seen) | |
3287 | { | |
3288 | *targ++ = '['; | |
3289 | slash_seen = 1; | |
3290 | } | |
3291 | *targ++ = '-'; | |
3292 | ufile += 2; /* skip the dots */ | |
3293 | if (index (&ufile[1], '/')) | |
3294 | *targ++ = '.'; | |
3295 | else | |
3296 | *targ++ = ']'; | |
3297 | } | |
3298 | else | |
3299 | *targ++ = *ufile; | |
3300 | break; | |
3301 | ||
3302 | default: | |
3303 | *targ++ = *ufile; | |
3304 | break; | |
3305 | } | |
3306 | ufile++; | |
3307 | } | |
3308 | *targ = '\0'; | |
3309 | ||
3310 | return utbuf; | |
3311 | } | |
3312 | ||
3313 | char * | |
3314 | getwd (pathname) | |
3315 | char *pathname; | |
3316 | { | |
3317 | char *ptr; | |
210b2b4f | 3318 | extern char *getcwd (); |
86a5659e | 3319 | |
210b2b4f JB |
3320 | #define MAXPATHLEN 1024 |
3321 | ||
9ac0d9e0 | 3322 | ptr = xmalloc (MAXPATHLEN); |
210b2b4f JB |
3323 | getcwd (ptr, MAXPATHLEN); |
3324 | strcpy (pathname, ptr); | |
9ac0d9e0 | 3325 | xfree (ptr); |
210b2b4f JB |
3326 | |
3327 | return pathname; | |
86a5659e JB |
3328 | } |
3329 | ||
3330 | getppid () | |
3331 | { | |
3332 | long item_code = JPI$_OWNER; | |
3333 | unsigned long parent_id; | |
3334 | int status; | |
3335 | ||
3336 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
3337 | { | |
3338 | errno = EVMSERR; | |
3339 | vaxc$errno = status; | |
3340 | return -1; | |
3341 | } | |
3342 | return parent_id; | |
3343 | } | |
3344 | ||
3345 | #undef getuid | |
3346 | unsigned | |
3347 | sys_getuid () | |
3348 | { | |
3349 | return (getgid () << 16) | getuid (); | |
3350 | } | |
3351 | ||
3352 | int | |
3353 | sys_read (fildes, buf, nbyte) | |
3354 | int fildes; | |
3355 | char *buf; | |
3356 | unsigned int nbyte; | |
3357 | { | |
3358 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
3359 | } | |
3360 | ||
3361 | #if 0 | |
3362 | int | |
3363 | sys_write (fildes, buf, nbyte) | |
3364 | int fildes; | |
3365 | char *buf; | |
3366 | unsigned int nbyte; | |
3367 | { | |
3368 | register int nwrote, rtnval = 0; | |
3369 | ||
3370 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
3371 | nbyte -= nwrote; | |
3372 | buf += nwrote; | |
3373 | rtnval += nwrote; | |
3374 | } | |
3375 | if (nwrote < 0) | |
3376 | return rtnval ? rtnval : -1; | |
3377 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
3378 | return rtnval ? rtnval : -1; | |
3379 | return (rtnval + nwrote); | |
3380 | } | |
3381 | #endif /* 0 */ | |
3382 | ||
3383 | /* | |
3384 | * VAX/VMS VAX C RTL really loses. It insists that records | |
3385 | * end with a newline (carriage return) character, and if they | |
3386 | * don't it adds one (nice of it isn't it!) | |
3387 | * | |
3388 | * Thus we do this stupidity below. | |
3389 | */ | |
3390 | ||
3391 | int | |
3392 | sys_write (fildes, buf, nbytes) | |
3393 | int fildes; | |
3394 | char *buf; | |
3395 | unsigned int nbytes; | |
3396 | { | |
3397 | register char *p; | |
3398 | register char *e; | |
23b0668c JB |
3399 | int sum = 0; |
3400 | struct stat st; | |
3401 | ||
3402 | fstat (fildes, &st); | |
86a5659e | 3403 | p = buf; |
86a5659e JB |
3404 | while (nbytes > 0) |
3405 | { | |
23b0668c JB |
3406 | int len, retval; |
3407 | ||
3408 | /* Handle fixed-length files with carriage control. */ | |
3409 | if (st.st_fab_rfm == FAB$C_FIX | |
3410 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
3411 | { | |
3412 | len = st.st_fab_mrs; | |
3413 | retval = write (fildes, p, min (len, nbytes)); | |
3414 | if (retval != len) | |
3415 | return -1; | |
3416 | retval++; /* This skips the implied carriage control */ | |
3417 | } | |
3418 | else | |
3419 | { | |
3420 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3421 | while (*e != '\n' && e > p) e--; | |
3422 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
3423 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3424 | len = e + 1 - p; | |
3425 | retval = write (fildes, p, len); | |
3426 | if (retval != len) | |
3427 | return -1; | |
3428 | } | |
3429 | p += retval; | |
3430 | sum += retval; | |
86a5659e JB |
3431 | nbytes -= retval; |
3432 | } | |
3433 | return sum; | |
3434 | } | |
3435 | ||
3436 | /* Create file NEW copying its attributes from file OLD. If | |
3437 | OLD is 0 or does not exist, create based on the value of | |
3438 | vms_stmlf_recfm. */ | |
3439 | ||
3440 | /* Protection value the file should ultimately have. | |
3441 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
3442 | static unsigned short int fab_final_pro; | |
3443 | ||
3444 | int | |
3445 | creat_copy_attrs (old, new) | |
3446 | char *old, *new; | |
3447 | { | |
3448 | struct FAB fab = cc$rms_fab; | |
3449 | struct XABPRO xabpro; | |
3450 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
3451 | extern int vms_stmlf_recfm; | |
3452 | ||
3453 | if (old) | |
3454 | { | |
3455 | fab.fab$b_fac = FAB$M_GET; | |
3456 | fab.fab$l_fna = old; | |
3457 | fab.fab$b_fns = strlen (old); | |
3458 | fab.fab$l_xab = (char *) &xabpro; | |
3459 | xabpro = cc$rms_xabpro; | |
3460 | xabpro.xab$l_aclbuf = aclbuf; | |
3461 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
3462 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 3463 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 3464 | { |
986ffb24 | 3465 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3466 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
3467 | if (xabpro.xab$w_acllen > 0) | |
3468 | { | |
3469 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
3470 | /* If the acl buffer was too short, redo open with longer one. | |
3471 | Wouldn't need to do this if there were some system imposed | |
3472 | limit on the size of an ACL, but I can't find any such. */ | |
3473 | { | |
3474 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
3475 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
3476 | if (SYS$OPEN (&fab, 0, 0) & 1) |
3477 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
3478 | else |
3479 | old = 0; | |
3480 | } | |
3481 | } | |
3482 | else | |
3483 | xabpro.xab$l_aclbuf = 0; | |
3484 | } | |
3485 | else | |
3486 | old = 0; | |
3487 | } | |
3488 | fab.fab$l_fna = new; | |
3489 | fab.fab$b_fns = strlen (new); | |
3490 | if (!old) | |
3491 | { | |
3492 | fab.fab$l_xab = 0; | |
3493 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
3494 | fab.fab$b_rat = FAB$M_CR; | |
3495 | } | |
3496 | ||
3497 | /* Set the file protections such that we will be able to manipulate | |
3498 | this file. Once we are done writing and renaming it, we will set | |
3499 | the protections back. */ | |
3500 | if (old) | |
3501 | fab_final_pro = xabpro.xab$w_pro; | |
3502 | else | |
986ffb24 | 3503 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
3504 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
3505 | ||
3506 | /* Create the new file with either default attrs or attrs copied | |
3507 | from old file. */ | |
3508 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
3509 | return -1; | |
986ffb24 | 3510 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3511 | /* As this is a "replacement" for creat, return a file descriptor |
3512 | opened for writing. */ | |
3513 | return open (new, O_WRONLY); | |
3514 | } | |
3515 | ||
3516 | #ifdef creat | |
3517 | #undef creat | |
3518 | #include <varargs.h> | |
3519 | #ifdef __GNUC__ | |
3520 | #ifndef va_count | |
3521 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
3522 | #endif | |
3523 | #endif | |
3524 | ||
3525 | sys_creat (va_alist) | |
3526 | va_dcl | |
3527 | { | |
3528 | va_list list_incrementor; | |
3529 | char *name; | |
3530 | int mode; | |
3531 | int rfd; /* related file descriptor */ | |
3532 | int fd; /* Our new file descriptor */ | |
3533 | int count; | |
3534 | struct stat st_buf; | |
3535 | char rfm[12]; | |
3536 | char rat[15]; | |
3537 | char mrs[13]; | |
3538 | char fsz[13]; | |
3539 | extern int vms_stmlf_recfm; | |
3540 | ||
3541 | va_count (count); | |
3542 | va_start (list_incrementor); | |
3543 | name = va_arg (list_incrementor, char *); | |
3544 | mode = va_arg (list_incrementor, int); | |
3545 | if (count > 2) | |
3546 | rfd = va_arg (list_incrementor, int); | |
3547 | va_end (list_incrementor); | |
3548 | if (count > 2) | |
3549 | { | |
3550 | /* Use information from the related file descriptor to set record | |
3551 | format of the newly created file. */ | |
3552 | fstat (rfd, &st_buf); | |
3553 | switch (st_buf.st_fab_rfm) | |
3554 | { | |
3555 | case FAB$C_FIX: | |
3556 | strcpy (rfm, "rfm = fix"); | |
3557 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
3558 | strcpy (rat, "rat = "); | |
3559 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3560 | strcat (rat, "cr"); | |
3561 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3562 | strcat (rat, "ftn"); | |
3563 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3564 | strcat (rat, "prn"); | |
3565 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3566 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3567 | strcat (rat, ", blk"); | |
3568 | else | |
3569 | strcat (rat, "blk"); | |
3570 | return creat (name, 0, rfm, rat, mrs); | |
3571 | ||
3572 | case FAB$C_VFC: | |
3573 | strcpy (rfm, "rfm = vfc"); | |
3574 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
3575 | strcpy (rat, "rat = "); | |
3576 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3577 | strcat (rat, "cr"); | |
3578 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3579 | strcat (rat, "ftn"); | |
3580 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3581 | strcat (rat, "prn"); | |
3582 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3583 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3584 | strcat (rat, ", blk"); | |
3585 | else | |
3586 | strcat (rat, "blk"); | |
3587 | return creat (name, 0, rfm, rat, fsz); | |
3588 | ||
3589 | case FAB$C_STM: | |
3590 | strcpy (rfm, "rfm = stm"); | |
3591 | break; | |
3592 | ||
3593 | case FAB$C_STMCR: | |
3594 | strcpy (rfm, "rfm = stmcr"); | |
3595 | break; | |
3596 | ||
3597 | case FAB$C_STMLF: | |
3598 | strcpy (rfm, "rfm = stmlf"); | |
3599 | break; | |
3600 | ||
3601 | case FAB$C_UDF: | |
3602 | strcpy (rfm, "rfm = udf"); | |
3603 | break; | |
3604 | ||
3605 | case FAB$C_VAR: | |
3606 | strcpy (rfm, "rfm = var"); | |
3607 | break; | |
3608 | } | |
3609 | strcpy (rat, "rat = "); | |
3610 | if (st_buf.st_fab_rat & FAB$M_CR) | |
3611 | strcat (rat, "cr"); | |
3612 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
3613 | strcat (rat, "ftn"); | |
3614 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
3615 | strcat (rat, "prn"); | |
3616 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
3617 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
3618 | strcat (rat, ", blk"); | |
3619 | else | |
3620 | strcat (rat, "blk"); | |
3621 | } | |
3622 | else | |
3623 | { | |
3624 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
3625 | strcpy (rat, "rat=cr"); | |
3626 | } | |
3627 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
3628 | mode 0 to get the user's default protection. */ | |
3629 | fd = creat (name, 0, rfm, rat); | |
3630 | if (fd < 0 && errno == EEXIST) | |
3631 | { | |
3632 | if (unlink (name) < 0) | |
3633 | report_file_error ("delete", build_string (name)); | |
3634 | fd = creat (name, 0, rfm, rat); | |
3635 | } | |
3636 | return fd; | |
3637 | } | |
3638 | #endif /* creat */ | |
3639 | ||
3640 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
3641 | sys_fwrite (ptr, size, num, fp) | |
3642 | register char * ptr; | |
3643 | FILE * fp; | |
3644 | { | |
3645 | register int tot = num * size; | |
3646 | ||
3647 | while (tot--) | |
3648 | fputc (*ptr++, fp); | |
3649 | } | |
3650 | ||
3651 | /* | |
3652 | * The VMS C library routine creat actually creates a new version of an | |
3653 | * existing file rather than truncating the old version. There are times | |
3654 | * when this is not the desired behavior, for instance, when writing an | |
3655 | * auto save file (you only want one version), or when you don't have | |
3656 | * write permission in the directory containing the file (but the file | |
3657 | * itself is writable). Hence this routine, which is equivalent to | |
3658 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
3659 | */ | |
3660 | int | |
3661 | vms_truncate (fn) | |
3662 | char *fn; | |
3663 | { | |
3664 | struct FAB xfab = cc$rms_fab; | |
3665 | struct RAB xrab = cc$rms_rab; | |
3666 | int status; | |
3667 | ||
3668 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
3669 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
3670 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
3671 | xfab.fab$l_fna = fn; | |
3672 | xfab.fab$b_fns = strlen (fn); | |
3673 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
3674 | xfab.fab$b_dns = 2; | |
3675 | xrab.rab$l_fab = &xfab; | |
3676 | ||
3677 | /* This gibberish opens the file, positions to the first record, and | |
3678 | deletes all records from there until the end of file. */ | |
986ffb24 | 3679 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 3680 | { |
986ffb24 JB |
3681 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
3682 | (SYS$FIND (&xrab) & 01) == 01 && | |
3683 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
3684 | status = 0; |
3685 | else | |
3686 | status = -1; | |
3687 | } | |
3688 | else | |
3689 | status = -1; | |
986ffb24 | 3690 | SYS$CLOSE (&xfab); |
86a5659e JB |
3691 | return status; |
3692 | } | |
3693 | ||
3694 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
3695 | SYSPRV or a readable SYSUAF.DAT. */ | |
3696 | ||
3697 | #ifdef READ_SYSUAF | |
3698 | /* | |
3699 | * getuaf.c | |
3700 | * | |
3701 | * Routine to read the VMS User Authorization File and return | |
3702 | * a specific user's record. | |
3703 | */ | |
3704 | ||
3705 | static struct UAF retuaf; | |
3706 | ||
3707 | struct UAF * | |
3708 | get_uaf_name (uname) | |
3709 | char * uname; | |
3710 | { | |
3711 | register status; | |
3712 | struct FAB uaf_fab; | |
3713 | struct RAB uaf_rab; | |
3714 | ||
3715 | uaf_fab = cc$rms_fab; | |
3716 | uaf_rab = cc$rms_rab; | |
3717 | /* initialize fab fields */ | |
3718 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
3719 | uaf_fab.fab$b_fns = 21; | |
3720 | uaf_fab.fab$b_fac = FAB$M_GET; | |
3721 | uaf_fab.fab$b_org = FAB$C_IDX; | |
3722 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
3723 | /* initialize rab fields */ | |
3724 | uaf_rab.rab$l_fab = &uaf_fab; | |
3725 | /* open the User Authorization File */ | |
986ffb24 | 3726 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
3727 | if (!(status&1)) |
3728 | { | |
3729 | errno = EVMSERR; | |
3730 | vaxc$errno = status; | |
3731 | return 0; | |
3732 | } | |
986ffb24 | 3733 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
3734 | if (!(status&1)) |
3735 | { | |
3736 | errno = EVMSERR; | |
3737 | vaxc$errno = status; | |
3738 | return 0; | |
3739 | } | |
3740 | /* read the requested record - index is in uname */ | |
3741 | uaf_rab.rab$l_kbf = uname; | |
3742 | uaf_rab.rab$b_ksz = strlen (uname); | |
3743 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
3744 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
3745 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 3746 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
3747 | if (!(status&1)) |
3748 | { | |
3749 | errno = EVMSERR; | |
3750 | vaxc$errno = status; | |
3751 | return 0; | |
3752 | } | |
3753 | /* close the User Authorization File */ | |
986ffb24 | 3754 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
3755 | if (!(status&1)) |
3756 | { | |
3757 | errno = EVMSERR; | |
3758 | vaxc$errno = status; | |
3759 | return 0; | |
3760 | } | |
986ffb24 | 3761 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
3762 | if (!(status&1)) |
3763 | { | |
3764 | errno = EVMSERR; | |
3765 | vaxc$errno = status; | |
3766 | return 0; | |
3767 | } | |
3768 | return &retuaf; | |
3769 | } | |
3770 | ||
3771 | struct UAF * | |
3772 | get_uaf_uic (uic) | |
3773 | unsigned long uic; | |
3774 | { | |
3775 | register status; | |
3776 | struct FAB uaf_fab; | |
3777 | struct RAB uaf_rab; | |
3778 | ||
3779 | uaf_fab = cc$rms_fab; | |
3780 | uaf_rab = cc$rms_rab; | |
3781 | /* initialize fab fields */ | |
3782 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
3783 | uaf_fab.fab$b_fns = 21; | |
3784 | uaf_fab.fab$b_fac = FAB$M_GET; | |
3785 | uaf_fab.fab$b_org = FAB$C_IDX; | |
3786 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
3787 | /* initialize rab fields */ | |
3788 | uaf_rab.rab$l_fab = &uaf_fab; | |
3789 | /* open the User Authorization File */ | |
986ffb24 | 3790 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
3791 | if (!(status&1)) |
3792 | { | |
3793 | errno = EVMSERR; | |
3794 | vaxc$errno = status; | |
3795 | return 0; | |
3796 | } | |
986ffb24 | 3797 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
3798 | if (!(status&1)) |
3799 | { | |
3800 | errno = EVMSERR; | |
3801 | vaxc$errno = status; | |
3802 | return 0; | |
3803 | } | |
3804 | /* read the requested record - index is in uic */ | |
3805 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
3806 | uaf_rab.rab$l_kbf = (char *) &uic; | |
3807 | uaf_rab.rab$b_ksz = sizeof uic; | |
3808 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
3809 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
3810 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 3811 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
3812 | if (!(status&1)) |
3813 | { | |
3814 | errno = EVMSERR; | |
3815 | vaxc$errno = status; | |
3816 | return 0; | |
3817 | } | |
3818 | /* close the User Authorization File */ | |
986ffb24 | 3819 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
3820 | if (!(status&1)) |
3821 | { | |
3822 | errno = EVMSERR; | |
3823 | vaxc$errno = status; | |
3824 | return 0; | |
3825 | } | |
986ffb24 | 3826 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
3827 | if (!(status&1)) |
3828 | { | |
3829 | errno = EVMSERR; | |
3830 | vaxc$errno = status; | |
3831 | return 0; | |
3832 | } | |
3833 | return &retuaf; | |
3834 | } | |
3835 | ||
3836 | static struct passwd retpw; | |
3837 | ||
3838 | struct passwd * | |
3839 | cnv_uaf_pw (up) | |
3840 | struct UAF * up; | |
3841 | { | |
3842 | char * ptr; | |
3843 | ||
3844 | /* copy these out first because if the username is 32 chars, the next | |
3845 | section will overwrite the first byte of the UIC */ | |
3846 | retpw.pw_uid = up->uaf$w_mem; | |
3847 | retpw.pw_gid = up->uaf$w_grp; | |
3848 | ||
3849 | /* I suppose this is not the best sytle, to possibly overwrite one | |
3850 | byte beyond the end of the field, but what the heck... */ | |
3851 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
3852 | while (ptr[-1] == ' ') | |
3853 | ptr--; | |
3854 | *ptr = '\0'; | |
3855 | strcpy (retpw.pw_name, up->uaf$t_username); | |
3856 | ||
3857 | /* the rest of these are counted ascii strings */ | |
3858 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
3859 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
3860 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
3861 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
3862 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
3863 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
3864 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
3865 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
3866 | ||
3867 | return &retpw; | |
3868 | } | |
3869 | #else /* not READ_SYSUAF */ | |
3870 | static struct passwd retpw; | |
3871 | #endif /* not READ_SYSUAF */ | |
3872 | ||
3873 | struct passwd * | |
3874 | getpwnam (name) | |
3875 | char * name; | |
3876 | { | |
3877 | #ifdef READ_SYSUAF | |
3878 | struct UAF *up; | |
3879 | #else | |
3880 | char * user; | |
3881 | char * dir; | |
3882 | unsigned char * full; | |
3883 | #endif /* READ_SYSUAF */ | |
3884 | char *ptr = name; | |
3885 | ||
3886 | while (*ptr) | |
3887 | { | |
3888 | if ('a' <= *ptr && *ptr <= 'z') | |
3889 | *ptr -= 040; | |
3890 | ptr++; | |
3891 | } | |
3892 | #ifdef READ_SYSUAF | |
3893 | if (!(up = get_uaf_name (name))) | |
3894 | return 0; | |
3895 | return cnv_uaf_pw (up); | |
3896 | #else | |
3897 | if (strcmp (name, getenv ("USER")) == 0) | |
3898 | { | |
3899 | retpw.pw_uid = getuid (); | |
3900 | retpw.pw_gid = getgid (); | |
3901 | strcpy (retpw.pw_name, name); | |
3902 | if (full = egetenv ("FULLNAME")) | |
3903 | strcpy (retpw.pw_gecos, full); | |
3904 | else | |
3905 | *retpw.pw_gecos = '\0'; | |
3906 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
3907 | *retpw.pw_shell = '\0'; | |
3908 | return &retpw; | |
3909 | } | |
3910 | else | |
3911 | return 0; | |
3912 | #endif /* not READ_SYSUAF */ | |
3913 | } | |
3914 | ||
3915 | struct passwd * | |
3916 | getpwuid (uid) | |
3917 | unsigned long uid; | |
3918 | { | |
3919 | #ifdef READ_SYSUAF | |
3920 | struct UAF * up; | |
3921 | ||
3922 | if (!(up = get_uaf_uic (uid))) | |
3923 | return 0; | |
3924 | return cnv_uaf_pw (up); | |
3925 | #else | |
3926 | if (uid == sys_getuid ()) | |
3927 | return getpwnam (egetenv ("USER")); | |
3928 | else | |
3929 | return 0; | |
3930 | #endif /* not READ_SYSUAF */ | |
3931 | } | |
3932 | ||
3933 | /* return total address space available to the current process. This is | |
3934 | the sum of the current p0 size, p1 size and free page table entries | |
3935 | available. */ | |
3936 | vlimit () | |
3937 | { | |
3938 | int item_code; | |
3939 | unsigned long free_pages; | |
3940 | unsigned long frep0va; | |
3941 | unsigned long frep1va; | |
3942 | register status; | |
3943 | ||
3944 | item_code = JPI$_FREPTECNT; | |
3945 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
3946 | { | |
3947 | errno = EVMSERR; | |
3948 | vaxc$errno = status; | |
3949 | return -1; | |
3950 | } | |
3951 | free_pages *= 512; | |
3952 | ||
3953 | item_code = JPI$_FREP0VA; | |
3954 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
3955 | { | |
3956 | errno = EVMSERR; | |
3957 | vaxc$errno = status; | |
3958 | return -1; | |
3959 | } | |
3960 | item_code = JPI$_FREP1VA; | |
3961 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
3962 | { | |
3963 | errno = EVMSERR; | |
3964 | vaxc$errno = status; | |
3965 | return -1; | |
3966 | } | |
3967 | ||
3968 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
3969 | } | |
3970 | ||
3971 | define_logical_name (varname, string) | |
3972 | char *varname; | |
3973 | char *string; | |
3974 | { | |
3975 | struct dsc$descriptor_s strdsc = | |
3976 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
3977 | struct dsc$descriptor_s envdsc = | |
3978 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
3979 | struct dsc$descriptor_s lnmdsc = | |
3980 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
3981 | ||
3982 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
3983 | } | |
3984 | ||
3985 | delete_logical_name (varname) | |
3986 | char *varname; | |
3987 | { | |
3988 | struct dsc$descriptor_s envdsc = | |
3989 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
3990 | struct dsc$descriptor_s lnmdsc = | |
3991 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
3992 | ||
3993 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
3994 | } | |
3995 | ||
3996 | ulimit () | |
3997 | {} | |
3998 | ||
86a5659e JB |
3999 | setpgrp () |
4000 | {} | |
4001 | ||
4002 | execvp () | |
4003 | { | |
4004 | error ("execvp system call not implemented"); | |
4005 | } | |
4006 | ||
4007 | int | |
4008 | rename (from, to) | |
4009 | char *from, *to; | |
4010 | { | |
4011 | int status; | |
4012 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4013 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4014 | char from_esn[NAM$C_MAXRSS]; | |
4015 | char to_esn[NAM$C_MAXRSS]; | |
4016 | ||
4017 | from_fab.fab$l_fna = from; | |
4018 | from_fab.fab$b_fns = strlen (from); | |
4019 | from_fab.fab$l_nam = &from_nam; | |
4020 | from_fab.fab$l_fop = FAB$M_NAM; | |
4021 | ||
4022 | from_nam.nam$l_esa = from_esn; | |
4023 | from_nam.nam$b_ess = sizeof from_esn; | |
4024 | ||
4025 | to_fab.fab$l_fna = to; | |
4026 | to_fab.fab$b_fns = strlen (to); | |
4027 | to_fab.fab$l_nam = &to_nam; | |
4028 | to_fab.fab$l_fop = FAB$M_NAM; | |
4029 | ||
4030 | to_nam.nam$l_esa = to_esn; | |
4031 | to_nam.nam$b_ess = sizeof to_esn; | |
4032 | ||
4033 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4034 | ||
4035 | if (status & 1) | |
4036 | return 0; | |
4037 | else | |
4038 | { | |
4039 | if (status == RMS$_DEV) | |
4040 | errno = EXDEV; | |
4041 | else | |
4042 | errno = EVMSERR; | |
4043 | vaxc$errno = status; | |
4044 | return -1; | |
4045 | } | |
4046 | } | |
4047 | ||
4048 | /* This function renames a file like `rename', but it strips | |
4049 | the version number from the "to" filename, such that the "to" file is | |
4050 | will always be a new version. It also sets the file protection once it is | |
4051 | finished. The protection that we will use is stored in fab_final_pro, | |
4052 | and was set when we did a creat_copy_attrs to create the file that we | |
4053 | are renaming. | |
4054 | ||
4055 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
4056 | to describe the protection, and VMS uses 4 (write and delete are seperate | |
4057 | bits). To maintain portability, the VMS implementation of `chmod' wires | |
4058 | the W and D bits together. */ | |
4059 | ||
4060 | ||
4061 | static struct fibdef fib; /* We need this initialized to zero */ | |
4062 | char vms_file_written[NAM$C_MAXRSS]; | |
4063 | ||
4064 | int | |
4065 | rename_sans_version (from,to) | |
4066 | char *from, *to; | |
4067 | { | |
4068 | short int chan; | |
4069 | int stat; | |
4070 | short int iosb[4]; | |
4071 | int status; | |
4072 | struct FAB to_fab = cc$rms_fab; | |
4073 | struct NAM to_nam = cc$rms_nam; | |
4074 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4075 | struct dsc$descriptor fib_attr[2] | |
4076 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4077 | char to_esn[NAM$C_MAXRSS]; | |
4078 | ||
4079 | $DESCRIPTOR (disk,to_esn); | |
4080 | ||
4081 | to_fab.fab$l_fna = to; | |
4082 | to_fab.fab$b_fns = strlen (to); | |
4083 | to_fab.fab$l_nam = &to_nam; | |
4084 | to_fab.fab$l_fop = FAB$M_NAM; | |
4085 | ||
4086 | to_nam.nam$l_esa = to_esn; | |
4087 | to_nam.nam$b_ess = sizeof to_esn; | |
4088 | ||
4089 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4090 | ||
4091 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4092 | *(to_nam.nam$l_ver) = '\0'; | |
4093 | ||
4094 | stat = rename (from, to_esn); | |
4095 | if (stat < 0) | |
4096 | return stat; | |
4097 | ||
4098 | strcpy (vms_file_written, to_esn); | |
4099 | ||
4100 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4101 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4102 | ||
4103 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4104 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4105 | |
4106 | /* Copy these fields into the fib */ | |
4107 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4108 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4109 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4110 | ||
986ffb24 | 4111 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4112 | |
986ffb24 | 4113 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4114 | if (!stat) |
986ffb24 JB |
4115 | LIB$SIGNAL (stat); |
4116 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4117 | 0, 0, 0, &fib_attr, 0); |
4118 | if (!stat) | |
986ffb24 JB |
4119 | LIB$SIGNAL (stat); |
4120 | stat = SYS$DASSGN (chan); | |
86a5659e | 4121 | if (!stat) |
986ffb24 | 4122 | LIB$SIGNAL (stat); |
0137dbf7 | 4123 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4124 | return 0; |
4125 | } | |
4126 | ||
4127 | link (file, new) | |
4128 | char * file, * new; | |
4129 | { | |
4130 | register status; | |
4131 | struct FAB fab; | |
4132 | struct NAM nam; | |
4133 | unsigned short fid[3]; | |
4134 | char esa[NAM$C_MAXRSS]; | |
4135 | ||
4136 | fab = cc$rms_fab; | |
4137 | fab.fab$l_fop = FAB$M_OFP; | |
4138 | fab.fab$l_fna = file; | |
4139 | fab.fab$b_fns = strlen (file); | |
4140 | fab.fab$l_nam = &nam; | |
4141 | ||
4142 | nam = cc$rms_nam; | |
4143 | nam.nam$l_esa = esa; | |
4144 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4145 | ||
4146 | status = SYS$PARSE (&fab); | |
4147 | if ((status & 1) == 0) | |
4148 | { | |
4149 | errno = EVMSERR; | |
4150 | vaxc$errno = status; | |
4151 | return -1; | |
4152 | } | |
4153 | status = SYS$SEARCH (&fab); | |
4154 | if ((status & 1) == 0) | |
4155 | { | |
4156 | errno = EVMSERR; | |
4157 | vaxc$errno = status; | |
4158 | return -1; | |
4159 | } | |
4160 | ||
4161 | fid[0] = nam.nam$w_fid[0]; | |
4162 | fid[1] = nam.nam$w_fid[1]; | |
4163 | fid[2] = nam.nam$w_fid[2]; | |
4164 | ||
4165 | fab.fab$l_fna = new; | |
4166 | fab.fab$b_fns = strlen (new); | |
4167 | ||
4168 | status = SYS$PARSE (&fab); | |
4169 | if ((status & 1) == 0) | |
4170 | { | |
4171 | errno = EVMSERR; | |
4172 | vaxc$errno = status; | |
4173 | return -1; | |
4174 | } | |
4175 | ||
4176 | nam.nam$w_fid[0] = fid[0]; | |
4177 | nam.nam$w_fid[1] = fid[1]; | |
4178 | nam.nam$w_fid[2] = fid[2]; | |
4179 | ||
4180 | nam.nam$l_esa = nam.nam$l_name; | |
4181 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
4182 | ||
4183 | status = SYS$ENTER (&fab); | |
4184 | if ((status & 1) == 0) | |
4185 | { | |
4186 | errno = EVMSERR; | |
4187 | vaxc$errno = status; | |
4188 | return -1; | |
4189 | } | |
4190 | ||
4191 | return 0; | |
4192 | } | |
4193 | ||
4194 | croak (badfunc) | |
4195 | char *badfunc; | |
4196 | { | |
4197 | printf ("%s not yet implemented\r\n", badfunc); | |
4198 | reset_sys_modes (); | |
4199 | exit (1); | |
4200 | } | |
4201 | ||
4202 | long | |
4203 | random () | |
4204 | { | |
4205 | /* Arrange to return a range centered on zero. */ | |
4206 | return rand () - (1 << 30); | |
4207 | } | |
4208 | ||
4209 | srandom (seed) | |
4210 | { | |
4211 | srand (seed); | |
4212 | } | |
4213 | #endif /* VMS */ | |
4214 | \f | |
4215 | #ifdef AIX | |
4216 | ||
4217 | /* Called from init_sys_modes. */ | |
4218 | hft_init () | |
4219 | { | |
4220 | int junk; | |
4221 | ||
4222 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
4223 | if we are on an HFT by trying to get an HFT error code. If this | |
4224 | call fails, we're not on an HFT. */ | |
4225 | #ifdef IBMR2AIX | |
4226 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4227 | return; | |
4228 | #else /* not IBMR2AIX */ | |
4229 | if (ioctl (0, HFQEIO, 0) < 0) | |
4230 | return; | |
4231 | #endif /* not IBMR2AIX */ | |
4232 | ||
4233 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
4234 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
4235 | there's no way to determine the old mapping, so in reset_sys_modes | |
4236 | we need to assume that the normal map had been present. Of course, this | |
4237 | code also doesn't help if on a terminal emulator which doesn't understand | |
4238 | HFT VTD's. */ | |
4239 | { | |
4240 | struct hfbuf buf; | |
4241 | struct hfkeymap keymap; | |
4242 | ||
4243 | buf.hf_bufp = (char *)&keymap; | |
4244 | buf.hf_buflen = sizeof (keymap); | |
4245 | keymap.hf_nkeys = 2; | |
4246 | keymap.hfkey[0].hf_kpos = 15; | |
4247 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4248 | #ifdef IBMR2AIX | |
4249 | keymap.hfkey[0].hf_keyidh = '<'; | |
4250 | #else /* not IBMR2AIX */ | |
4251 | keymap.hfkey[0].hf_page = '<'; | |
4252 | #endif /* not IBMR2AIX */ | |
4253 | keymap.hfkey[0].hf_char = 127; | |
4254 | keymap.hfkey[1].hf_kpos = 15; | |
4255 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4256 | #ifdef IBMR2AIX | |
4257 | keymap.hfkey[1].hf_keyidh = '<'; | |
4258 | #else /* not IBMR2AIX */ | |
4259 | keymap.hfkey[1].hf_page = '<'; | |
4260 | #endif /* not IBMR2AIX */ | |
4261 | keymap.hfkey[1].hf_char = 127; | |
4262 | hftctl (0, HFSKBD, &buf); | |
4263 | } | |
4264 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
4265 | at times. */ | |
4266 | line_ins_del_ok = char_ins_del_ok = 0; | |
4267 | } | |
4268 | ||
4269 | /* Reset the rubout key to backspace. */ | |
4270 | ||
4271 | hft_reset () | |
4272 | { | |
4273 | struct hfbuf buf; | |
4274 | struct hfkeymap keymap; | |
4275 | int junk; | |
4276 | ||
4277 | #ifdef IBMR2AIX | |
4278 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4279 | return; | |
4280 | #else /* not IBMR2AIX */ | |
4281 | if (ioctl (0, HFQEIO, 0) < 0) | |
4282 | return; | |
4283 | #endif /* not IBMR2AIX */ | |
4284 | ||
4285 | buf.hf_bufp = (char *)&keymap; | |
4286 | buf.hf_buflen = sizeof (keymap); | |
4287 | keymap.hf_nkeys = 2; | |
4288 | keymap.hfkey[0].hf_kpos = 15; | |
4289 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4290 | #ifdef IBMR2AIX | |
4291 | keymap.hfkey[0].hf_keyidh = '<'; | |
4292 | #else /* not IBMR2AIX */ | |
4293 | keymap.hfkey[0].hf_page = '<'; | |
4294 | #endif /* not IBMR2AIX */ | |
4295 | keymap.hfkey[0].hf_char = 8; | |
4296 | keymap.hfkey[1].hf_kpos = 15; | |
4297 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4298 | #ifdef IBMR2AIX | |
4299 | keymap.hfkey[1].hf_keyidh = '<'; | |
4300 | #else /* not IBMR2AIX */ | |
4301 | keymap.hfkey[1].hf_page = '<'; | |
4302 | #endif /* not IBMR2AIX */ | |
4303 | keymap.hfkey[1].hf_char = 8; | |
4304 | hftctl (0, HFSKBD, &buf); | |
4305 | } | |
4306 | ||
4307 | #endif /* AIX */ |