Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
bb4bc8e2 | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94 Free Software Foundation, Inc. |
86a5659e JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7088d1ca | 8 | the Free Software Foundation; either version 2, or (at your option) |
86a5659e JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
22 | #include <setjmp.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
86a5659e | 25 | #include "lisp.h" |
9ac0d9e0 | 26 | #include "blockinput.h" |
86a5659e JB |
27 | #undef NULL |
28 | ||
29 | #define min(x,y) ((x) > (y) ? (y) : (x)) | |
30 | ||
31 | /* In this file, open, read and write refer to the system calls, | |
32 | not our sugared interfaces sys_open, sys_read and sys_write. | |
33 | Contrariwise, for systems where we use the system calls directly, | |
34 | define sys_read, etc. here as aliases for them. */ | |
35 | #ifndef read | |
36 | #define sys_read read | |
37 | #define sys_write write | |
38 | #endif /* `read' is not a macro */ | |
39 | ||
40 | #undef read | |
41 | #undef write | |
42 | ||
43 | #ifndef close | |
44 | #define sys_close close | |
45 | #else | |
46 | #undef close | |
47 | #endif | |
48 | ||
49 | #ifndef open | |
50 | #define sys_open open | |
51 | #else /* `open' is a macro */ | |
52 | #undef open | |
53 | #endif /* `open' is a macro */ | |
54 | ||
986ffb24 JB |
55 | /* Does anyone other than VMS need this? */ |
56 | #ifndef fwrite | |
57 | #define sys_fwrite fwrite | |
58 | #else | |
59 | #undef fwrite | |
60 | #endif | |
61 | ||
86a5659e JB |
62 | #include <stdio.h> |
63 | #include <sys/types.h> | |
64 | #include <sys/stat.h> | |
65 | #include <errno.h> | |
66 | ||
207bdbdb RS |
67 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
68 | #include <dos.h> | |
69 | #include "dosfns.h" | |
70 | #include "msdos.h" | |
71 | #include <sys/param.h> | |
72 | #endif | |
73 | ||
86a5659e | 74 | extern int errno; |
86a5659e | 75 | |
bb4bc8e2 RM |
76 | #ifdef VMS |
77 | #include <rms.h> | |
78 | #include <ttdef.h> | |
79 | #include <tt2def.h> | |
80 | #include <iodef.h> | |
81 | #include <ssdef.h> | |
82 | #include <descrip.h> | |
83 | #include <fibdef.h> | |
84 | #include <atrdef.h> | |
85 | #include <ctype.h> | |
86 | #include <string.h> | |
87 | #ifdef __GNUC__ | |
88 | #include <sys/file.h> | |
89 | #else | |
90 | #include <file.h> | |
91 | #endif | |
92 | #undef F_SETFL | |
93 | #ifndef RAB$C_BID | |
94 | #include <rab.h> | |
95 | #endif | |
96 | #define MAXIOSIZE ( 32 * PAGESIZE ) /* Don't I/O more than 32 blocks at a time */ | |
97 | #endif /* VMS */ | |
98 | ||
99 | #ifndef BSD4_1 | |
100 | #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG) | |
101 | because the vms compiler doesn't grok `defined' */ | |
102 | #include <fcntl.h> | |
103 | #endif | |
104 | #ifdef USG | |
105 | #ifndef USG5 | |
106 | #include <fcntl.h> | |
107 | #endif | |
108 | #endif | |
109 | #endif /* not 4.1 bsd */ | |
86a5659e | 110 | |
411c533f JB |
111 | #ifdef BROKEN_FASYNC |
112 | /* On some systems (DGUX comes to mind real fast) FASYNC causes | |
113 | background writes to the terminal to stop all processes in the | |
114 | process group when invoked under the csh (and probably any shell | |
115 | with job control). This stops Emacs dead in its tracks when coming | |
116 | up under X11. */ | |
117 | #undef FASYNC | |
118 | #endif | |
86a5659e | 119 | |
207bdbdb | 120 | #ifndef MSDOS |
86a5659e | 121 | #include <sys/ioctl.h> |
207bdbdb | 122 | #endif |
e04a4e0d | 123 | #include "systty.h" |
94c8642a | 124 | #include "syswait.h" |
86a5659e | 125 | |
86a5659e JB |
126 | #ifdef BROKEN_TIOCGWINSZ |
127 | #undef TIOCGWINSZ | |
8dca3179 | 128 | #undef TIOCSWINSZ |
86a5659e JB |
129 | #endif |
130 | ||
86a5659e JB |
131 | #ifdef USG |
132 | #include <sys/utsname.h> | |
133 | #include <string.h> | |
134 | #ifndef MEMORY_IN_STRING_H | |
135 | #include <memory.h> | |
136 | #endif | |
81444907 | 137 | #if defined (TIOCGWINSZ) || defined (ISC4_0) |
86a5659e JB |
138 | #ifdef NEED_SIOCTL |
139 | #include <sys/sioctl.h> | |
140 | #endif | |
141 | #ifdef NEED_PTEM_H | |
142 | #include <sys/stream.h> | |
143 | #include <sys/ptem.h> | |
144 | #endif | |
81444907 | 145 | #endif /* TIOCGWINSZ or ISC4_0 */ |
86a5659e JB |
146 | #endif /* USG */ |
147 | ||
86a5659e JB |
148 | extern int quit_char; |
149 | ||
0137dbf7 | 150 | #include "frame.h" |
86a5659e JB |
151 | #include "window.h" |
152 | #include "termhooks.h" | |
153 | #include "termchar.h" | |
154 | #include "termopts.h" | |
155 | #include "dispextern.h" | |
156 | #include "process.h" | |
157 | ||
158 | #ifdef NONSYSTEM_DIR_LIBRARY | |
159 | #include "ndir.h" | |
160 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
161 | ||
91bac16a JB |
162 | #include "syssignal.h" |
163 | #include "systime.h" | |
86a5659e | 164 | |
a00d5589 RS |
165 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
166 | #ifndef LPASS8 | |
167 | #define LPASS8 0 | |
168 | #endif | |
169 | ||
170 | #ifdef BSD4_1 | |
171 | #define LNOFLSH 0100000 | |
172 | #endif | |
173 | ||
86a5659e JB |
174 | static int baud_convert[] = |
175 | #ifdef BAUD_CONVERT | |
176 | BAUD_CONVERT; | |
177 | #else | |
178 | { | |
179 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
180 | 1800, 2400, 4800, 9600, 19200, 38400 | |
181 | }; | |
182 | #endif | |
183 | ||
184 | extern short ospeed; | |
185 | ||
91bac16a | 186 | /* The file descriptor for Emacs's input terminal. |
64e971c3 | 187 | Under Unix, this is normaly zero except when using X; |
91bac16a JB |
188 | under VMS, we place the input channel number here. |
189 | This allows us to write more code that works for both VMS and Unix. */ | |
190 | static int input_fd; | |
64e971c3 RS |
191 | \f |
192 | /* Specify a different file descriptor for further input operations. */ | |
193 | ||
194 | void | |
195 | change_input_fd (fd) | |
196 | int fd; | |
197 | { | |
198 | input_fd = fd; | |
199 | } | |
200 | ||
201 | /* Discard pending input on descriptor input_fd. */ | |
91bac16a | 202 | |
86a5659e JB |
203 | discard_tty_input () |
204 | { | |
91bac16a | 205 | struct emacs_tty buf; |
86a5659e JB |
206 | |
207 | if (noninteractive) | |
208 | return; | |
209 | ||
210 | /* Discarding input is not safe when the input could contain | |
211 | replies from the X server. So don't do it. */ | |
212 | if (read_socket_hook) | |
213 | return; | |
214 | ||
215 | #ifdef VMS | |
216 | end_kbd_input (); | |
91bac16a JB |
217 | SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, |
218 | &buf.main, 0, 0, terminator_mask, 0, 0); | |
86a5659e JB |
219 | queue_kbd_input (); |
220 | #else /* not VMS */ | |
221 | #ifdef APOLLO | |
222 | { | |
223 | int zero = 0; | |
64e971c3 | 224 | ioctl (input_fd, TIOCFLUSH, &zero); |
86a5659e JB |
225 | } |
226 | #else /* not Apollo */ | |
207bdbdb RS |
227 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
228 | while (dos_keyread () != -1) | |
229 | ; | |
230 | #else /* not MSDOS */ | |
91bac16a JB |
231 | EMACS_GET_TTY (input_fd, &buf); |
232 | EMACS_SET_TTY (input_fd, &buf, 0); | |
207bdbdb | 233 | #endif /* not MSDOS */ |
86a5659e JB |
234 | #endif /* not Apollo */ |
235 | #endif /* not VMS */ | |
236 | } | |
237 | ||
238 | #ifdef SIGTSTP | |
239 | ||
64e971c3 RS |
240 | /* Arrange for character C to be read as the next input from |
241 | the terminal. */ | |
242 | ||
86a5659e JB |
243 | stuff_char (c) |
244 | char c; | |
245 | { | |
246 | /* Should perhaps error if in batch mode */ | |
247 | #ifdef TIOCSTI | |
64e971c3 | 248 | ioctl (input_fd, TIOCSTI, &c); |
86a5659e | 249 | #else /* no TIOCSTI */ |
71f06467 | 250 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
251 | #endif /* no TIOCSTI */ |
252 | } | |
253 | ||
254 | #endif /* SIGTSTP */ | |
64e971c3 | 255 | \f |
86a5659e JB |
256 | init_baud_rate () |
257 | { | |
86a5659e JB |
258 | if (noninteractive) |
259 | ospeed = 0; | |
260 | else | |
261 | { | |
207bdbdb RS |
262 | #ifdef MSDOS |
263 | ospeed = 15; | |
264 | #else | |
86a5659e | 265 | #ifdef VMS |
91bac16a JB |
266 | struct sensemode sg; |
267 | ||
268 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, | |
86a5659e | 269 | &sg.class, 12, 0, 0, 0, 0 ); |
91bac16a JB |
270 | ospeed = sg.xmit_baud; |
271 | #else /* not VMS */ | |
e04a4e0d JB |
272 | #ifdef HAVE_TERMIOS |
273 | struct termios sg; | |
91bac16a | 274 | |
71f06467 | 275 | sg.c_cflag = B9600; |
64e971c3 | 276 | tcgetattr (input_fd, &sg); |
d7272cff | 277 | ospeed = cfgetospeed (&sg); |
e04a4e0d JB |
278 | #else /* neither VMS nor TERMIOS */ |
279 | #ifdef HAVE_TERMIO | |
280 | struct termio sg; | |
91bac16a | 281 | |
71f06467 | 282 | sg.c_cflag = B9600; |
e04a4e0d | 283 | #ifdef HAVE_TCATTR |
64e971c3 | 284 | tcgetattr (input_fd, &sg); |
e04a4e0d | 285 | #else |
6c65530f | 286 | ioctl (input_fd, TCGETA, &sg); |
e04a4e0d | 287 | #endif |
91bac16a | 288 | ospeed = sg.c_cflag & CBAUD; |
e04a4e0d | 289 | #else /* neither VMS nor TERMIOS nor TERMIO */ |
91bac16a JB |
290 | struct sgttyb sg; |
291 | ||
292 | sg.sg_ospeed = B9600; | |
64e971c3 | 293 | if (ioctl (input_fd, TIOCGETP, &sg) < 0) |
d7272cff | 294 | abort (); |
91bac16a | 295 | ospeed = sg.sg_ospeed; |
91bac16a | 296 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 297 | #endif /* not HAVE_TERMIOS */ |
86a5659e | 298 | #endif /* not VMS */ |
207bdbdb | 299 | #endif /* not MSDOS */ |
86a5659e JB |
300 | } |
301 | ||
302 | baud_rate = (ospeed < sizeof baud_convert / sizeof baud_convert[0] | |
303 | ? baud_convert[ospeed] : 9600); | |
304 | if (baud_rate == 0) | |
305 | baud_rate = 1200; | |
306 | } | |
307 | ||
308 | /*ARGSUSED*/ | |
309 | set_exclusive_use (fd) | |
310 | int fd; | |
311 | { | |
312 | #ifdef FIOCLEX | |
313 | ioctl (fd, FIOCLEX, 0); | |
314 | #endif | |
315 | /* Ok to do nothing if this feature does not exist */ | |
316 | } | |
64e971c3 | 317 | \f |
86a5659e JB |
318 | #ifndef subprocesses |
319 | ||
320 | wait_without_blocking () | |
321 | { | |
322 | #ifdef BSD | |
323 | wait3 (0, WNOHANG | WUNTRACED, 0); | |
324 | #else | |
325 | croak ("wait_without_blocking"); | |
326 | #endif | |
327 | synch_process_alive = 0; | |
328 | } | |
329 | ||
330 | #endif /* not subprocesses */ | |
331 | ||
332 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
333 | (at least for bsd). */ | |
334 | ||
335 | SIGTYPE | |
336 | wait_for_termination_signal () | |
337 | {} | |
338 | ||
339 | /* Wait for subprocess with process id `pid' to terminate and | |
340 | make sure it will get eliminated (not remain forever as a zombie) */ | |
341 | ||
342 | wait_for_termination (pid) | |
343 | int pid; | |
344 | { | |
345 | while (1) | |
346 | { | |
347 | #ifdef subprocesses | |
348 | #ifdef VMS | |
349 | int status; | |
350 | ||
986ffb24 | 351 | status = SYS$FORCEX (&pid, 0, 0); |
86a5659e JB |
352 | break; |
353 | #else /* not VMS */ | |
05695621 | 354 | #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5)) |
4c8975ad RS |
355 | /* Note that kill returns -1 even if the process is just a zombie now. |
356 | But inevitably a SIGCHLD interrupt should be generated | |
357 | and child_sig will do wait3 and make the process go away. */ | |
358 | /* There is some indication that there is a bug involved with | |
359 | termination of subprocesses, perhaps involving a kernel bug too, | |
360 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
361 | if that causes the problem to go away or get worse. */ | |
362 | sigsetmask (sigmask (SIGCHLD)); | |
363 | if (0 > kill (pid, 0)) | |
364 | { | |
365 | sigsetmask (SIGEMPTYMASK); | |
366 | kill (getpid (), SIGCHLD); | |
367 | break; | |
368 | } | |
369 | if (wait_debugging) | |
370 | sleep (1); | |
371 | else | |
372 | sigpause (SIGEMPTYMASK); | |
05695621 RS |
373 | #else /* not BSD, and not HPUX version >= 6 */ |
374 | #if defined (UNIPLUS) | |
4c8975ad RS |
375 | if (0 > kill (pid, 0)) |
376 | break; | |
377 | wait (0); | |
05695621 | 378 | #else /* neither BSD nor UNIPLUS: random sysV */ |
9ab714c7 RS |
379 | #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */ |
380 | sigblock (sigmask (SIGCHLD)); | |
381 | if (0 > kill (pid, 0)) | |
382 | { | |
383 | sigunblock (sigmask (SIGCHLD)); | |
384 | break; | |
385 | } | |
92c995de | 386 | sigpause (SIGEMPTYMASK); |
9ab714c7 | 387 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
388 | #ifdef HAVE_SYSV_SIGPAUSE |
389 | sighold (SIGCHLD); | |
390 | if (0 > kill (pid, 0)) | |
391 | { | |
392 | sigrelse (SIGCHLD); | |
393 | break; | |
394 | } | |
395 | sigpause (SIGCHLD); | |
396 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
397 | if (0 > kill (pid, 0)) | |
86a5659e | 398 | break; |
4c8975ad RS |
399 | /* Using sleep instead of pause avoids timing error. |
400 | If the inferior dies just before the sleep, | |
401 | we lose just one second. */ | |
402 | sleep (1); | |
403 | #endif /* not HAVE_SYSV_SIGPAUSE */ | |
9ab714c7 | 404 | #endif /* not POSIX_SIGNALS */ |
4c8975ad RS |
405 | #endif /* not UNIPLUS */ |
406 | #endif /* not BSD, and not HPUX version >= 6 */ | |
86a5659e JB |
407 | #endif /* not VMS */ |
408 | #else /* not subprocesses */ | |
409 | #ifndef BSD4_1 | |
410 | if (kill (pid, 0) < 0) | |
411 | break; | |
412 | wait (0); | |
413 | #else /* BSD4_1 */ | |
414 | int status; | |
415 | status = wait (0); | |
416 | if (status == pid || status == -1) | |
417 | break; | |
418 | #endif /* BSD4_1 */ | |
419 | #endif /* not subprocesses */ | |
420 | } | |
421 | } | |
422 | ||
423 | #ifdef subprocesses | |
424 | ||
425 | /* | |
426 | * flush any pending output | |
427 | * (may flush input as well; it does not matter the way we use it) | |
428 | */ | |
429 | ||
430 | flush_pending_output (channel) | |
431 | int channel; | |
432 | { | |
433 | #ifdef HAVE_TERMIOS | |
434 | /* If we try this, we get hit with SIGTTIN, because | |
435 | the child's tty belongs to the child's pgrp. */ | |
436 | #else | |
437 | #ifdef TCFLSH | |
438 | ioctl (channel, TCFLSH, 1); | |
439 | #else | |
440 | #ifdef TIOCFLUSH | |
441 | int zero = 0; | |
442 | /* 3rd arg should be ignored | |
443 | but some 4.2 kernels actually want the address of an int | |
444 | and nonzero means something different. */ | |
445 | ioctl (channel, TIOCFLUSH, &zero); | |
446 | #endif | |
447 | #endif | |
448 | #endif | |
449 | } | |
64e971c3 | 450 | \f |
86a5659e JB |
451 | #ifndef VMS |
452 | /* Set up the terminal at the other end of a pseudo-terminal that | |
453 | we will be controlling an inferior through. | |
454 | It should not echo or do line-editing, since that is done | |
455 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
456 | ||
457 | child_setup_tty (out) | |
458 | int out; | |
459 | { | |
207bdbdb | 460 | #ifndef MSDOS |
91bac16a JB |
461 | struct emacs_tty s; |
462 | ||
463 | EMACS_GET_TTY (out, &s); | |
86a5659e | 464 | |
31be8d24 | 465 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
466 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
467 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 468 | #ifdef NLDLY |
91bac16a JB |
469 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
470 | /* No output delays */ | |
9d4e5eea | 471 | #endif |
91bac16a JB |
472 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
473 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
474 | #ifdef IUCLC |
475 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
476 | #endif | |
23e4c8be | 477 | #ifdef OLCUC |
9d4e5eea RS |
478 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
479 | #endif | |
1bf96fb5 | 480 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a | 481 | #if 0 |
eb8c3be9 | 482 | /* Said to be unnecessary: */ |
91bac16a JB |
483 | s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ |
484 | s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ | |
485 | #endif | |
486 | ||
487 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ | |
488 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
489 | s.main.c_cc[VERASE] = 0377; /* disable erase processing */ | |
490 | s.main.c_cc[VKILL] = 0377; /* disable kill processing */ | |
491 | ||
86a5659e | 492 | #ifdef HPUX |
91bac16a | 493 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 494 | #endif /* HPUX */ |
91bac16a | 495 | |
86a5659e JB |
496 | #ifdef AIX |
497 | /* AIX enhanced edit loses NULs, so disable it */ | |
498 | #ifndef IBMR2AIX | |
91bac16a JB |
499 | s.main.c_line = 0; |
500 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
501 | #endif |
502 | /* Also, PTY overloads NUL and BREAK. | |
503 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
504 | s.main.c_iflag &= ~IGNBRK; |
505 | s.main.c_iflag &= ~BRKINT; | |
506 | /* QUIT and INTR work better as signals, so disable character forms */ | |
91bac16a | 507 | s.main.c_cc[VINTR] = 0377; |
e6cc3307 RS |
508 | #ifdef SIGNALS_VIA_CHARACTERS |
509 | /* the QUIT and INTR character are used in process_send_signal | |
510 | so set them here to something useful. */ | |
511 | if (s.main.c_cc[VQUIT] == 0377) | |
512 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ | |
513 | if (s.main.c_cc[VINTR] == 0377) | |
514 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ | |
515 | #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ | |
516 | /* QUIT and INTR work better as signals, so disable character forms */ | |
517 | s.main.c_cc[VQUIT] = 0377; | |
518 | s.main.c_cc[VINTR] = 0377; | |
91bac16a | 519 | s.main.c_lflag &= ~ISIG; |
e6cc3307 RS |
520 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
521 | s.main.c_cc[VEOL] = 0377; | |
91bac16a | 522 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
523 | #endif /* AIX */ |
524 | ||
525 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
526 | |
527 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
528 | | CBREAK | TANDEM); | |
a00d5589 | 529 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
530 | s.main.sg_erase = 0377; |
531 | s.main.sg_kill = 0377; | |
1bf96fb5 | 532 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 533 | |
86a5659e JB |
534 | #endif /* not HAVE_TERMIO */ |
535 | ||
91bac16a | 536 | EMACS_SET_TTY (out, &s, 0); |
86a5659e JB |
537 | |
538 | #ifdef BSD4_1 | |
539 | if (interrupt_input) | |
540 | reset_sigio (); | |
541 | #endif /* BSD4_1 */ | |
542 | #ifdef RTU | |
543 | { | |
544 | int zero = 0; | |
545 | ioctl (out, FIOASYNC, &zero); | |
546 | } | |
547 | #endif /* RTU */ | |
207bdbdb | 548 | #endif /* not MSDOS */ |
86a5659e JB |
549 | } |
550 | #endif /* not VMS */ | |
551 | ||
552 | #endif /* subprocesses */ | |
553 | ||
554 | /*ARGSUSED*/ | |
555 | setpgrp_of_tty (pid) | |
556 | int pid; | |
557 | { | |
ffd56f97 | 558 | EMACS_SET_TTY_PGRP (input_fd, &pid); |
86a5659e | 559 | } |
64e971c3 | 560 | \f |
86a5659e JB |
561 | /* Record a signal code and the handler for it. */ |
562 | struct save_signal | |
563 | { | |
564 | int code; | |
565 | SIGTYPE (*handler) (); | |
566 | }; | |
567 | ||
568 | /* Suspend the Emacs process; give terminal to its superior. */ | |
569 | ||
570 | sys_suspend () | |
571 | { | |
572 | #ifdef VMS | |
88191e36 RS |
573 | /* "Foster" parentage allows emacs to return to a subprocess that attached |
574 | to the current emacs as a cheaper than starting a whole new process. This | |
575 | is set up by KEPTEDITOR.COM. */ | |
576 | unsigned long parent_id, foster_parent_id; | |
577 | char *fpid_string; | |
578 | ||
579 | fpid_string = getenv ("EMACS_PARENT_PID"); | |
580 | if (fpid_string != NULL) | |
581 | { | |
582 | sscanf (fpid_string, "%x", &foster_parent_id); | |
583 | if (foster_parent_id != 0) | |
584 | parent_id = foster_parent_id; | |
585 | else | |
586 | parent_id = getppid (); | |
587 | } | |
588 | else | |
589 | parent_id = getppid (); | |
590 | ||
9ac0d9e0 | 591 | xfree (fpid_string); /* On VMS, this was malloc'd */ |
86a5659e | 592 | |
86a5659e JB |
593 | if (parent_id && parent_id != 0xffffffff) |
594 | { | |
595 | SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); | |
596 | int status = LIB$ATTACH (&parent_id) & 1; | |
597 | signal (SIGINT, oldsig); | |
598 | return status; | |
599 | } | |
600 | else | |
601 | { | |
602 | struct { | |
603 | int l; | |
604 | char *a; | |
605 | } d_prompt; | |
606 | d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ | |
607 | d_prompt.a = "Emacs: "; /* Just a reminder */ | |
986ffb24 | 608 | LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); |
86a5659e JB |
609 | return 1; |
610 | } | |
611 | return -1; | |
612 | #else | |
207bdbdb | 613 | #if defined(SIGTSTP) && !defined(MSDOS) |
86a5659e | 614 | |
5a570e37 | 615 | { |
e89a2cd5 | 616 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
617 | EMACS_KILLPG (pgrp, SIGTSTP); |
618 | } | |
86a5659e JB |
619 | |
620 | #else /* No SIGTSTP */ | |
621 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
622 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
623 | kill (getpid (), SIGQUIT); | |
624 | ||
625 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
626 | ||
627 | /* On a system where suspending is not implemented, | |
628 | instead fork a subshell and let it talk directly to the terminal | |
629 | while we wait. */ | |
a0932daa KH |
630 | sys_subshell (); |
631 | ||
632 | #endif /* no USG_JOBCTRL */ | |
633 | #endif /* no SIGTSTP */ | |
634 | #endif /* not VMS */ | |
635 | } | |
636 | ||
637 | /* Fork a subshell. */ | |
638 | ||
639 | sys_subshell () | |
640 | { | |
641 | #ifndef VMS | |
642 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ | |
643 | int st; | |
644 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
645 | #endif | |
86a5659e JB |
646 | int pid = fork (); |
647 | struct save_signal saved_handlers[5]; | |
648 | ||
649 | saved_handlers[0].code = SIGINT; | |
650 | saved_handlers[1].code = SIGQUIT; | |
651 | saved_handlers[2].code = SIGTERM; | |
652 | #ifdef SIGIO | |
653 | saved_handlers[3].code = SIGIO; | |
654 | saved_handlers[4].code = 0; | |
655 | #else | |
656 | saved_handlers[3].code = 0; | |
657 | #endif | |
658 | ||
659 | if (pid == -1) | |
660 | error ("Can't spawn subshell"); | |
661 | if (pid == 0) | |
662 | { | |
663 | char *sh; | |
664 | ||
207bdbdb RS |
665 | #ifdef MSDOS /* MW, Aug 1993 */ |
666 | getwd (oldwd); | |
667 | #endif | |
86a5659e JB |
668 | sh = (char *) egetenv ("SHELL"); |
669 | if (sh == 0) | |
670 | sh = "sh"; | |
207bdbdb | 671 | |
86a5659e JB |
672 | /* Use our buffer's default directory for the subshell. */ |
673 | { | |
674 | Lisp_Object dir; | |
675 | unsigned char *str; | |
676 | int len; | |
677 | ||
678 | /* mentioning current_buffer->buffer would mean including buffer.h, | |
679 | which somehow wedges the hp compiler. So instead... */ | |
680 | ||
681 | dir = intern ("default-directory"); | |
207bdbdb | 682 | /* Can't use NILP */ |
86a5659e JB |
683 | if (XFASTINT (Fboundp (dir)) == XFASTINT (Qnil)) |
684 | goto xyzzy; | |
685 | dir = Fsymbol_value (dir); | |
686 | if (XTYPE (dir) != Lisp_String) | |
687 | goto xyzzy; | |
688 | ||
689 | str = (unsigned char *) alloca (XSTRING (dir)->size + 2); | |
690 | len = XSTRING (dir)->size; | |
691 | bcopy (XSTRING (dir)->data, str, len); | |
692 | if (str[len - 1] != '/') str[len++] = '/'; | |
693 | str[len] = 0; | |
694 | chdir (str); | |
695 | } | |
696 | xyzzy: | |
697 | #ifdef subprocesses | |
698 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
699 | #endif | |
1593c2fe | 700 | |
6f8b4d01 | 701 | #ifdef SET_EMACS_PRIORITY |
1593c2fe JB |
702 | { |
703 | extern int emacs_priority; | |
704 | ||
6f8b4d01 | 705 | if (emacs_priority < 0) |
1593c2fe JB |
706 | nice (-emacs_priority); |
707 | } | |
708 | #endif | |
709 | ||
207bdbdb RS |
710 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
711 | st = system (sh); | |
712 | chdir (oldwd); | |
713 | if (st) | |
714 | report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); | |
715 | #else /* not MSDOS */ | |
86a5659e JB |
716 | execlp (sh, sh, 0); |
717 | write (1, "Can't execute subshell", 22); | |
718 | _exit (1); | |
207bdbdb | 719 | #endif /* not MSDOS */ |
86a5659e JB |
720 | } |
721 | ||
722 | save_signal_handlers (saved_handlers); | |
ffafc793 | 723 | synch_process_alive = 1; |
86a5659e JB |
724 | wait_for_termination (pid); |
725 | restore_signal_handlers (saved_handlers); | |
a0932daa | 726 | #endif /* !VMS */ |
86a5659e JB |
727 | } |
728 | ||
729 | save_signal_handlers (saved_handlers) | |
730 | struct save_signal *saved_handlers; | |
731 | { | |
732 | while (saved_handlers->code) | |
733 | { | |
508b171c JA |
734 | saved_handlers->handler |
735 | = (SIGTYPE (*) ()) signal (saved_handlers->code, SIG_IGN); | |
86a5659e JB |
736 | saved_handlers++; |
737 | } | |
738 | } | |
739 | ||
740 | restore_signal_handlers (saved_handlers) | |
741 | struct save_signal *saved_handlers; | |
742 | { | |
743 | while (saved_handlers->code) | |
744 | { | |
745 | signal (saved_handlers->code, saved_handlers->handler); | |
746 | saved_handlers++; | |
747 | } | |
748 | } | |
749 | \f | |
750 | #ifdef F_SETFL | |
751 | ||
752 | int old_fcntl_flags; | |
753 | ||
754 | init_sigio () | |
755 | { | |
756 | #ifdef FASYNC | |
64e971c3 | 757 | old_fcntl_flags = fcntl (input_fd, F_GETFL, 0) & ~FASYNC; |
86a5659e JB |
758 | #endif |
759 | request_sigio (); | |
760 | } | |
761 | ||
762 | reset_sigio () | |
763 | { | |
764 | unrequest_sigio (); | |
765 | } | |
766 | ||
eb8c3be9 | 767 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
86a5659e JB |
768 | |
769 | request_sigio () | |
770 | { | |
771 | #ifdef SIGWINCH | |
e065a56e | 772 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 773 | #endif |
64e971c3 | 774 | fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); |
86a5659e JB |
775 | |
776 | interrupts_deferred = 0; | |
777 | } | |
778 | ||
779 | unrequest_sigio () | |
780 | { | |
781 | #ifdef SIGWINCH | |
e065a56e | 782 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 783 | #endif |
64e971c3 | 784 | fcntl (input_fd, F_SETFL, old_fcntl_flags); |
86a5659e JB |
785 | interrupts_deferred = 1; |
786 | } | |
787 | ||
788 | #else /* no FASYNC */ | |
789 | #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ | |
790 | ||
791 | request_sigio () | |
792 | { | |
793 | int on = 1; | |
64e971c3 | 794 | ioctl (input_fd, FIOASYNC, &on); |
86a5659e JB |
795 | interrupts_deferred = 0; |
796 | } | |
797 | ||
798 | unrequest_sigio () | |
799 | { | |
800 | int off = 0; | |
801 | ||
64e971c3 | 802 | ioctl (input_fd, FIOASYNC, &off); |
86a5659e JB |
803 | interrupts_deferred = 1; |
804 | } | |
805 | ||
806 | #else /* not FASYNC, not STRIDE */ | |
807 | ||
25ab68af RS |
808 | #ifdef _CX_UX |
809 | ||
810 | #include <termios.h> | |
811 | ||
812 | request_sigio () | |
813 | { | |
814 | int on = 1; | |
815 | sigset_t st; | |
816 | ||
817 | sigemptyset(&st); | |
818 | sigaddset(&st, SIGIO); | |
819 | ioctl (input_fd, FIOASYNC, &on); | |
820 | interrupts_deferred = 0; | |
821 | sigprocmask(SIG_UNBLOCK, &st, (sigset_t *)0); | |
822 | } | |
823 | ||
824 | unrequest_sigio () | |
825 | { | |
826 | int off = 0; | |
827 | ||
828 | ioctl (input_fd, FIOASYNC, &off); | |
829 | interrupts_deferred = 1; | |
830 | } | |
831 | ||
832 | #else /* ! _CX_UX */ | |
833 | ||
86a5659e JB |
834 | request_sigio () |
835 | { | |
836 | croak ("request_sigio"); | |
837 | } | |
838 | ||
839 | unrequest_sigio () | |
840 | { | |
841 | croak ("unrequest_sigio"); | |
842 | } | |
843 | ||
25ab68af | 844 | #endif /* _CX_UX */ |
86a5659e JB |
845 | #endif /* STRIDE */ |
846 | #endif /* FASYNC */ | |
847 | #endif /* F_SETFL */ | |
848 | \f | |
9ae8f997 JB |
849 | /* Saving and restoring the process group of Emacs's terminal. */ |
850 | ||
0ba73609 | 851 | #ifdef BSD_PGRPS |
9ae8f997 JB |
852 | |
853 | /* The process group of which Emacs was a member when it initially | |
854 | started. | |
855 | ||
856 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
857 | getpid ()), then we know we're running under a shell with job | |
858 | control (Emacs would never be run as part of a pipeline). | |
859 | Everything is fine. | |
860 | ||
861 | If Emacs was not in its own process group, then we know we're | |
862 | running under a shell (or a caller) that doesn't know how to | |
863 | separate itself from Emacs (like sh). Emacs must be in its own | |
864 | process group in order to receive SIGIO correctly. In this | |
865 | situation, we put ourselves in our own pgroup, forcibly set the | |
866 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
867 | the tty's pgroup just like any other terminal setting. If | |
868 | inherited_group was not the tty's pgroup, then we'll get a | |
869 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
870 | it goes foreground in the future, which is what should happen. */ | |
871 | int inherited_pgroup; | |
872 | ||
873 | /* Split off the foreground process group to Emacs alone. | |
874 | When we are in the foreground, but not started in our own process | |
875 | group, redirect the TTY to point to our own process group. We need | |
876 | to be in our own process group to receive SIGIO properly. */ | |
877 | narrow_foreground_group () | |
878 | { | |
879 | int me = getpid (); | |
880 | ||
881 | setpgrp (0, inherited_pgroup); | |
882 | if (inherited_pgroup != me) | |
64e971c3 | 883 | EMACS_SET_TTY_PGRP (input_fd, &me); |
9ae8f997 JB |
884 | setpgrp (0, me); |
885 | } | |
886 | ||
887 | /* Set the tty to our original foreground group. */ | |
888 | widen_foreground_group () | |
889 | { | |
890 | if (inherited_pgroup != getpid ()) | |
64e971c3 | 891 | EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); |
9ae8f997 JB |
892 | setpgrp (0, inherited_pgroup); |
893 | } | |
894 | ||
0ba73609 | 895 | #endif /* BSD_PGRPS */ |
9ae8f997 | 896 | \f |
68936329 JB |
897 | /* Getting and setting emacs_tty structures. */ |
898 | ||
899 | /* Set *TC to the parameters associated with the terminal FD. | |
900 | Return zero if all's well, or -1 if we ran into an error we | |
901 | couldn't deal with. */ | |
902 | int | |
903 | emacs_get_tty (fd, settings) | |
904 | int fd; | |
905 | struct emacs_tty *settings; | |
906 | { | |
907 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
908 | #ifdef HAVE_TCATTR | |
909 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
910 | if (tcgetattr (fd, &settings->main) < 0) | |
911 | return -1; | |
912 | ||
913 | #else | |
914 | #ifdef HAVE_TERMIO | |
915 | /* The SYSV-style interface? */ | |
916 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
917 | return -1; | |
918 | ||
919 | #else | |
920 | #ifdef VMS | |
921 | /* Vehemently Monstrous System? :-) */ | |
922 | if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, | |
923 | &settings->main.class, 12, 0, 0, 0, 0) | |
924 | & 1)) | |
925 | return -1; | |
926 | ||
927 | #else | |
207bdbdb | 928 | #ifndef MSDOS |
68936329 JB |
929 | /* I give up - I hope you have the BSD ioctls. */ |
930 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
931 | return -1; | |
207bdbdb | 932 | #endif /* not MSDOS */ |
68936329 JB |
933 | #endif |
934 | #endif | |
935 | #endif | |
936 | ||
937 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 938 | #ifdef HAVE_LTCHARS |
68936329 JB |
939 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
940 | return -1; | |
941 | #endif | |
942 | ||
943 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 944 | #ifdef HAVE_TCHARS |
68936329 JB |
945 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
946 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
947 | return -1; | |
948 | #endif | |
949 | ||
950 | /* We have survived the tempest. */ | |
951 | return 0; | |
952 | } | |
953 | ||
954 | ||
955 | /* Set the parameters of the tty on FD according to the contents of | |
956 | *SETTINGS. If WAITP is non-zero, we wait for all queued output to | |
957 | be written before making the change; otherwise, we forget any | |
958 | queued input and make the change immediately. | |
959 | Return 0 if all went well, and -1 if anything failed. */ | |
960 | int | |
961 | emacs_set_tty (fd, settings, waitp) | |
962 | int fd; | |
963 | struct emacs_tty *settings; | |
964 | int waitp; | |
965 | { | |
966 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
967 | #ifdef HAVE_TCATTR | |
e6cc3307 | 968 | int i; |
68936329 JB |
969 | /* We have those nifty POSIX tcmumbleattr functions. |
970 | William J. Smith <wjs@wiis.wang.com> writes: | |
971 | "POSIX 1003.1 defines tcsetattr() to return success if it was | |
972 | able to perform any of the requested actions, even if some | |
973 | of the requested actions could not be performed. | |
974 | We must read settings back to ensure tty setup properly. | |
975 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 976 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 977 | for (i = 0 ; i < 10 ; i++) |
68936329 JB |
978 | if (tcsetattr (fd, waitp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
979 | { | |
980 | if (errno == EINTR) | |
981 | continue; | |
982 | else | |
983 | return -1; | |
984 | } | |
985 | else | |
986 | { | |
987 | struct termios new; | |
988 | ||
989 | /* Get the current settings, and see if they're what we asked for. */ | |
990 | tcgetattr (fd, &new); | |
e6cc3307 RS |
991 | /* We cannot use memcmp on the whole structure here because under |
992 | * aix386 the termios structure has some reserved field that may | |
993 | * not be filled in. | |
994 | */ | |
995 | if ( new.c_iflag == settings->main.c_iflag | |
996 | && new.c_oflag == settings->main.c_oflag | |
997 | && new.c_cflag == settings->main.c_cflag | |
998 | && new.c_lflag == settings->main.c_lflag | |
999 | && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0) | |
68936329 | 1000 | break; |
e6cc3307 RS |
1001 | else |
1002 | continue; | |
68936329 JB |
1003 | } |
1004 | ||
1005 | #else | |
1006 | #ifdef HAVE_TERMIO | |
1007 | /* The SYSV-style interface? */ | |
1008 | if (ioctl (fd, waitp ? TCSETAW : TCSETAF, &settings->main) < 0) | |
1009 | return -1; | |
1010 | ||
1011 | #else | |
1012 | #ifdef VMS | |
1013 | /* Vehemently Monstrous System? :-) */ | |
1014 | if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, | |
1015 | &settings->main.class, 12, 0, 0, 0, 0) | |
1016 | & 1)) | |
1017 | return -1; | |
1018 | ||
1019 | #else | |
207bdbdb | 1020 | #ifndef MSDOS |
68936329 JB |
1021 | /* I give up - I hope you have the BSD ioctls. */ |
1022 | if (ioctl (fd, (waitp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) | |
1023 | return -1; | |
207bdbdb | 1024 | #endif /* not MSDOS */ |
68936329 JB |
1025 | |
1026 | #endif | |
1027 | #endif | |
1028 | #endif | |
1029 | ||
1030 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1031 | #ifdef HAVE_LTCHARS |
68936329 JB |
1032 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1033 | return -1; | |
1034 | #endif | |
1035 | ||
1036 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1037 | #ifdef HAVE_TCHARS |
68936329 JB |
1038 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1039 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1040 | return -1; | |
1041 | #endif | |
1042 | ||
1043 | /* We have survived the tempest. */ | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | \f | |
91bac16a JB |
1048 | /* The initial tty mode bits */ |
1049 | struct emacs_tty old_tty; | |
86a5659e JB |
1050 | |
1051 | int term_initted; /* 1 if outer tty status has been recorded */ | |
1052 | ||
91bac16a JB |
1053 | #ifdef BSD4_1 |
1054 | /* BSD 4.1 needs to keep track of the lmode bits in order to start | |
1055 | sigio. */ | |
1056 | int lmode; | |
1057 | #endif | |
1058 | ||
46f2fdac | 1059 | #ifndef F_SETOWN_BUG |
86a5659e JB |
1060 | #ifdef F_SETOWN |
1061 | int old_fcntl_owner; | |
1062 | #endif /* F_SETOWN */ | |
46f2fdac | 1063 | #endif /* F_SETOWN_BUG */ |
86a5659e | 1064 | |
86a5659e JB |
1065 | /* This may also be defined in stdio, |
1066 | but if so, this does no harm, | |
1067 | and using the same name avoids wasting the other one's space. */ | |
1068 | ||
1069 | #if defined (USG) || defined (DGUX) | |
1070 | unsigned char _sobuf[BUFSIZ+8]; | |
1071 | #else | |
1072 | char _sobuf[BUFSIZ]; | |
1073 | #endif | |
1074 | ||
50b8cf60 | 1075 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1076 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1077 | #endif | |
50b8cf60 | 1078 | #ifdef HAVE_TCHARS |
86a5659e JB |
1079 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
1080 | #endif | |
1081 | ||
1082 | init_sys_modes () | |
1083 | { | |
91bac16a JB |
1084 | struct emacs_tty tty; |
1085 | ||
86a5659e JB |
1086 | #ifdef VMS |
1087 | #if 0 | |
1088 | static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ | |
1089 | extern int (*interrupt_signal) (); | |
1090 | #endif | |
1091 | #endif | |
1092 | ||
1093 | if (noninteractive) | |
1094 | return; | |
1095 | ||
1096 | #ifdef VMS | |
1097 | if (!input_ef) | |
1098 | input_ef = get_kbd_event_flag (); | |
1099 | /* LIB$GET_EF (&input_ef); */ | |
1100 | SYS$CLREF (input_ef); | |
1101 | waiting_for_ast = 0; | |
1102 | if (!timer_ef) | |
1103 | timer_ef = get_timer_event_flag (); | |
1104 | /* LIB$GET_EF (&timer_ef); */ | |
1105 | SYS$CLREF (timer_ef); | |
210b2b4f | 1106 | #if 0 |
86a5659e JB |
1107 | if (!process_ef) |
1108 | { | |
1109 | LIB$GET_EF (&process_ef); | |
1110 | SYS$CLREF (process_ef); | |
1111 | } | |
1112 | if (input_ef / 32 != process_ef / 32) | |
1113 | croak ("Input and process event flags in different clusters."); | |
210b2b4f | 1114 | #endif |
86a5659e | 1115 | if (input_ef / 32 != timer_ef / 32) |
210b2b4f JB |
1116 | croak ("Input and timer event flags in different clusters."); |
1117 | #if 0 | |
86a5659e JB |
1118 | input_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1119 | ((unsigned) 1 << (process_ef % 32)); | |
210b2b4f | 1120 | #endif |
86a5659e JB |
1121 | timer_eflist = ((unsigned) 1 << (input_ef % 32)) | |
1122 | ((unsigned) 1 << (timer_ef % 32)); | |
86a5659e JB |
1123 | #ifndef VMS4_4 |
1124 | sys_access_reinit (); | |
1125 | #endif | |
86a5659e | 1126 | #endif /* not VMS */ |
91bac16a | 1127 | |
0ba73609 | 1128 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1129 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1130 | narrow_foreground_group (); | |
1131 | #endif | |
1132 | ||
91bac16a JB |
1133 | EMACS_GET_TTY (input_fd, &old_tty); |
1134 | ||
86a5659e JB |
1135 | if (!read_socket_hook && EQ (Vwindow_system, Qnil)) |
1136 | { | |
91bac16a | 1137 | tty = old_tty; |
86a5659e | 1138 | |
31be8d24 | 1139 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
1140 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1141 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
86a5659e | 1142 | #ifdef ISTRIP |
91bac16a | 1143 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1144 | #endif |
91bac16a JB |
1145 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1146 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1147 | #ifdef IEXTEN |
b26bc18b | 1148 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1149 | #endif |
91bac16a | 1150 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
86a5659e JB |
1151 | if (flow_control) |
1152 | { | |
91bac16a | 1153 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ |
86a5659e | 1154 | #ifdef IXANY |
91bac16a | 1155 | tty.main.c_iflag &= ~IXANY; |
86a5659e JB |
1156 | #endif /* IXANY */ |
1157 | } | |
1158 | else | |
91bac16a JB |
1159 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ |
1160 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1161 | on output */ | |
1162 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e JB |
1163 | #ifdef CS8 |
1164 | if (meta_key) | |
1165 | { | |
91bac16a JB |
1166 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ |
1167 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
86a5659e JB |
1168 | } |
1169 | #endif | |
91bac16a | 1170 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ |
86a5659e JB |
1171 | /* Set up C-g for both SIGQUIT and SIGINT. |
1172 | We don't know which we will get, but we handle both alike | |
1173 | so which one it really gives us does not matter. */ | |
91bac16a JB |
1174 | tty.main.c_cc[VQUIT] = quit_char; |
1175 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1176 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1177 | #ifdef VSWTCH |
e2b40c23 | 1178 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1179 | of C-z */ |
86a5659e JB |
1180 | #endif /* VSWTCH */ |
1181 | #if defined (mips) || defined (HAVE_TCATTR) | |
86a5659e | 1182 | #ifdef VSUSP |
e2b40c23 | 1183 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1184 | #endif /* VSUSP */ |
1185 | #ifdef V_DSUSP | |
e2b40c23 | 1186 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1187 | #endif /* V_DSUSP */ |
e2b40c23 RS |
1188 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
1189 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
1190 | #endif /* VDSUSP */ | |
92c995de RS |
1191 | #ifdef VLNEXT |
1192 | tty.main.c_cc[VLNEXT] = CDISABLE; | |
1193 | #endif /* VLNEXT */ | |
1194 | #ifdef VREPRINT | |
1195 | tty.main.c_cc[VREPRINT] = CDISABLE; | |
1196 | #endif /* VREPRINT */ | |
1197 | #ifdef VWERASE | |
1198 | tty.main.c_cc[VWERASE] = CDISABLE; | |
1199 | #endif /* VWERASE */ | |
1200 | #ifdef VDISCARD | |
1201 | tty.main.c_cc[VDISCARD] = CDISABLE; | |
1202 | #endif /* VDISCARD */ | |
86a5659e JB |
1203 | #endif /* mips or HAVE_TCATTR */ |
1204 | #ifdef AIX | |
1205 | #ifndef IBMR2AIX | |
1206 | /* AIX enhanced edit loses NULs, so disable it */ | |
91bac16a JB |
1207 | tty.main.c_line = 0; |
1208 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1209 | #else |
91bac16a JB |
1210 | tty.main.c_cc[VSTRT] = 255; |
1211 | tty.main.c_cc[VSTOP] = 255; | |
1212 | tty.main.c_cc[VSUSP] = 255; | |
1213 | tty.main.c_cc[VDSUSP] = 255; | |
86a5659e JB |
1214 | #endif /* IBMR2AIX */ |
1215 | /* Also, PTY overloads NUL and BREAK. | |
1216 | don't ignore break, but don't signal either, so it looks like NUL. | |
1217 | This really serves a purpose only if running in an XTERM window | |
1218 | or via TELNET or the like, but does no harm elsewhere. */ | |
91bac16a JB |
1219 | tty.main.c_iflag &= ~IGNBRK; |
1220 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1221 | #endif |
1222 | #else /* if not HAVE_TERMIO */ | |
1223 | #ifdef VMS | |
91bac16a | 1224 | tty.main.tt_char |= TT$M_NOECHO; |
86a5659e | 1225 | if (meta_key) |
986ffb24 | 1226 | tty.main.tt_char |= TT$M_EIGHTBIT; |
86a5659e | 1227 | if (flow_control) |
91bac16a | 1228 | tty.main.tt_char |= TT$M_TTSYNC; |
86a5659e | 1229 | else |
91bac16a JB |
1230 | tty.main.tt_char &= ~TT$M_TTSYNC; |
1231 | tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; | |
86a5659e | 1232 | #else /* not VMS (BSD, that is) */ |
207bdbdb | 1233 | #ifndef MSDOS |
91bac16a | 1234 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); |
86a5659e | 1235 | if (meta_key) |
91bac16a JB |
1236 | tty.main.sg_flags |= ANYP; |
1237 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
207bdbdb | 1238 | #endif |
86a5659e JB |
1239 | #endif /* not VMS (BSD, that is) */ |
1240 | #endif /* not HAVE_TERMIO */ | |
1241 | ||
91bac16a JB |
1242 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1243 | and turn off start and stop chars, etc. If not going to use | |
1244 | CBREAK mode, do this anyway so as to turn off local flow | |
1245 | control for user coming over network on 4.2; in this case, | |
1246 | only t_stopc and t_startc really matter. */ | |
1247 | #ifndef HAVE_TERMIO | |
50b8cf60 | 1248 | #ifdef HAVE_TCHARS |
91bac16a JB |
1249 | /* Note: if not using CBREAK mode, it makes no difference how we |
1250 | set this */ | |
1251 | tty.tchars = new_tchars; | |
1252 | tty.tchars.t_intrc = quit_char; | |
1253 | if (flow_control) | |
1254 | { | |
1255 | tty.tchars.t_startc = '\021'; | |
1256 | tty.tchars.t_stopc = '\023'; | |
1257 | } | |
1258 | ||
91bac16a | 1259 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; |
37fd7901 JB |
1260 | #ifdef ultrix |
1261 | /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt | |
1262 | anything, and leaving it in breaks the meta key. Go figure. */ | |
1263 | tty.lmode &= ~LLITOUT; | |
1264 | #endif | |
91bac16a JB |
1265 | |
1266 | #ifdef BSD4_1 | |
1267 | lmode = tty.lmode; | |
1268 | #endif | |
1269 | ||
50b8cf60 | 1270 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1271 | #endif /* not HAVE_TERMIO */ |
1272 | ||
50b8cf60 | 1273 | #ifdef HAVE_LTCHARS |
91bac16a | 1274 | tty.ltchars = new_ltchars; |
50b8cf60 | 1275 | #endif /* HAVE_LTCHARS */ |
207bdbdb RS |
1276 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
1277 | internal_terminal_init (); | |
1278 | dos_ttraw (); | |
1279 | #endif | |
91bac16a JB |
1280 | |
1281 | EMACS_SET_TTY (input_fd, &tty, 0); | |
86a5659e JB |
1282 | |
1283 | /* This code added to insure that, if flow-control is not to be used, | |
0137dbf7 | 1284 | we have an unlocked terminal at the start. */ |
91bac16a | 1285 | |
86a5659e | 1286 | #ifdef TCXONC |
64e971c3 | 1287 | if (!flow_control) ioctl (input_fd, TCXONC, 1); |
86a5659e JB |
1288 | #endif |
1289 | #ifndef APOLLO | |
1290 | #ifdef TIOCSTART | |
64e971c3 | 1291 | if (!flow_control) ioctl (input_fd, TIOCSTART, 0); |
86a5659e JB |
1292 | #endif |
1293 | #endif | |
1294 | ||
1295 | #ifdef AIX | |
1296 | hft_init (); | |
1297 | #ifdef IBMR2AIX | |
1298 | { | |
1299 | /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it | |
1300 | to be only LF. This is the way that is done. */ | |
1301 | struct termio tty; | |
1302 | ||
1303 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1304 | write (1, "\033[20l", 5); | |
1305 | } | |
1306 | #endif | |
1307 | #endif | |
1308 | ||
86a5659e JB |
1309 | #ifdef VMS |
1310 | /* Appears to do nothing when in PASTHRU mode. | |
91bac16a | 1311 | SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, |
86a5659e JB |
1312 | interrupt_signal, oob_chars, 0, 0, 0, 0); |
1313 | */ | |
1314 | queue_kbd_input (0); | |
1315 | #endif /* VMS */ | |
1316 | } | |
1317 | ||
1318 | #ifdef F_SETFL | |
46f2fdac | 1319 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1320 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
86a5659e JB |
1321 | if (interrupt_input) |
1322 | { | |
64e971c3 RS |
1323 | old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); |
1324 | fcntl (input_fd, F_SETOWN, getpid ()); | |
86a5659e JB |
1325 | init_sigio (); |
1326 | } | |
1327 | #endif /* F_GETOWN */ | |
46f2fdac | 1328 | #endif /* F_SETOWN_BUG */ |
86a5659e JB |
1329 | #endif /* F_SETFL */ |
1330 | ||
1331 | #ifdef BSD4_1 | |
1332 | if (interrupt_input) | |
1333 | init_sigio (); | |
1334 | #endif | |
1335 | ||
1336 | #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ | |
1337 | #undef _IOFBF | |
1338 | #endif | |
1339 | #ifdef _IOFBF | |
1340 | /* This symbol is defined on recent USG systems. | |
1341 | Someone says without this call USG won't really buffer the file | |
1342 | even with a call to setbuf. */ | |
1343 | setvbuf (stdout, _sobuf, _IOFBF, sizeof _sobuf); | |
1344 | #else | |
1345 | setbuf (stdout, _sobuf); | |
1346 | #endif | |
4b311aaf RS |
1347 | if (! read_socket_hook && EQ (Vwindow_system, Qnil)) |
1348 | set_terminal_modes (); | |
1349 | ||
86a5659e JB |
1350 | if (term_initted && no_redraw_on_reenter) |
1351 | { | |
1352 | if (display_completed) | |
1353 | direct_output_forward_char (0); | |
1354 | } | |
1355 | else | |
1356 | { | |
0137dbf7 JB |
1357 | frame_garbaged = 1; |
1358 | #ifdef MULTI_FRAME | |
1359 | if (FRAMEP (Vterminal_frame)) | |
1360 | FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; | |
86a5659e JB |
1361 | #endif |
1362 | } | |
91bac16a | 1363 | |
86a5659e JB |
1364 | term_initted = 1; |
1365 | } | |
1366 | ||
1367 | /* Return nonzero if safe to use tabs in output. | |
1368 | At the time this is called, init_sys_modes has not been done yet. */ | |
1369 | ||
1370 | tabs_safe_p () | |
1371 | { | |
91bac16a JB |
1372 | struct emacs_tty tty; |
1373 | ||
1374 | EMACS_GET_TTY (input_fd, &tty); | |
1375 | return EMACS_TTY_TABS_OK (&tty); | |
86a5659e | 1376 | } |
73d5358f | 1377 | \f |
86a5659e | 1378 | /* Get terminal size from system. |
73d5358f RS |
1379 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1380 | We store 0 if there's no valid information. */ | |
86a5659e | 1381 | |
0137dbf7 | 1382 | get_frame_size (widthp, heightp) |
86a5659e JB |
1383 | int *widthp, *heightp; |
1384 | { | |
86a5659e | 1385 | |
86a5659e | 1386 | #ifdef TIOCGWINSZ |
91bac16a JB |
1387 | |
1388 | /* BSD-style. */ | |
86a5659e | 1389 | struct winsize size; |
91bac16a JB |
1390 | |
1391 | if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) | |
1392 | *widthp = *heightp = 0; | |
1393 | else | |
1394 | { | |
1395 | *widthp = size.ws_col; | |
1396 | *heightp = size.ws_row; | |
1397 | } | |
1398 | ||
1399 | #else | |
1400 | #ifdef TIOCGSIZE | |
1401 | ||
1402 | /* SunOS - style. */ | |
1403 | struct ttysize size; | |
1404 | ||
1405 | if (ioctl (input_fd, TIOCGSIZE, &size) == -1) | |
1406 | *widthp = *heightp = 0; | |
1407 | else | |
1408 | { | |
1409 | *widthp = size.ts_cols; | |
1410 | *heightp = size.ts_lines; | |
1411 | } | |
1412 | ||
1413 | #else | |
86a5659e | 1414 | #ifdef VMS |
91bac16a JB |
1415 | |
1416 | struct sensemode tty; | |
1417 | ||
1418 | SYS$QIOW (0, input_fd, IO$_SENSEMODE, &tty, 0, 0, | |
86a5659e JB |
1419 | &tty.class, 12, 0, 0, 0, 0); |
1420 | *widthp = tty.scr_wid; | |
1421 | *heightp = tty.scr_len; | |
91bac16a | 1422 | |
207bdbdb RS |
1423 | #else |
1424 | #ifdef MSDOS | |
1425 | *widthp = ScreenCols (); | |
1426 | *heightp = ScreenRows (); | |
86a5659e JB |
1427 | #else /* system doesn't know size */ |
1428 | *widthp = 0; | |
1429 | *heightp = 0; | |
207bdbdb | 1430 | #endif |
91bac16a JB |
1431 | |
1432 | #endif /* not VMS */ | |
1433 | #endif /* not SunOS-style */ | |
1434 | #endif /* not BSD-style */ | |
86a5659e | 1435 | } |
91bac16a | 1436 | |
73d5358f RS |
1437 | /* Set the logical window size associated with descriptor FD |
1438 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1439 | ||
1440 | int | |
1441 | set_window_size (fd, height, width) | |
1442 | int fd, height, width; | |
1443 | { | |
1444 | #ifdef TIOCSWINSZ | |
1445 | ||
1446 | /* BSD-style. */ | |
1447 | struct winsize size; | |
1448 | size.ws_row = height; | |
1449 | size.ws_col = width; | |
1450 | ||
1451 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1452 | return 0; /* error */ | |
1453 | else | |
1454 | return 1; | |
1455 | ||
1456 | #else | |
1457 | #ifdef TIOCSSIZE | |
1458 | ||
1459 | /* SunOS - style. */ | |
1460 | struct ttysize size; | |
1461 | size.ts_lines = height; | |
1462 | size.ts_cols = width; | |
1463 | ||
1464 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1465 | return 0; | |
1466 | else | |
1467 | return 1; | |
1468 | #else | |
1469 | return -1; | |
1470 | #endif /* not SunOS-style */ | |
1471 | #endif /* not BSD-style */ | |
1472 | } | |
1473 | ||
86a5659e | 1474 | \f |
91bac16a | 1475 | /* Prepare the terminal for exiting Emacs; move the cursor to the |
0137dbf7 | 1476 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
86a5659e JB |
1477 | reset_sys_modes () |
1478 | { | |
1479 | if (noninteractive) | |
1480 | { | |
1481 | fflush (stdout); | |
1482 | return; | |
1483 | } | |
1484 | if (!term_initted) | |
1485 | return; | |
1486 | if (read_socket_hook || !EQ (Vwindow_system, Qnil)) | |
1487 | return; | |
0137dbf7 JB |
1488 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
1489 | clear_end_of_line (FRAME_WIDTH (selected_frame)); | |
86a5659e | 1490 | /* clear_end_of_line may move the cursor */ |
0137dbf7 | 1491 | cursor_to (FRAME_HEIGHT (selected_frame) - 1, 0); |
86a5659e JB |
1492 | #ifdef IBMR2AIX |
1493 | { | |
1494 | /* HFT devices normally use ^J as a LF/CR. We forced it to | |
1495 | do the LF only. Now, we need to reset it. */ | |
1496 | struct termio tty; | |
1497 | ||
1498 | if (ioctl (1, HFTGETID, &tty) != -1) | |
1499 | write (1, "\033[20h", 5); | |
1500 | } | |
1501 | #endif | |
1502 | ||
1503 | reset_terminal_modes (); | |
1504 | fflush (stdout); | |
1505 | #ifdef BSD | |
1506 | #ifndef BSD4_1 | |
1507 | /* Avoid possible loss of output when changing terminal modes. */ | |
1508 | fsync (fileno (stdout)); | |
1509 | #endif | |
1510 | #endif | |
91bac16a | 1511 | |
86a5659e | 1512 | #ifdef F_SETFL |
46f2fdac | 1513 | #ifndef F_SETOWN_BUG |
eb8c3be9 | 1514 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1515 | if (interrupt_input) |
1516 | { | |
1517 | reset_sigio (); | |
64e971c3 | 1518 | fcntl (input_fd, F_SETOWN, old_fcntl_owner); |
86a5659e JB |
1519 | } |
1520 | #endif /* F_SETOWN */ | |
46f2fdac | 1521 | #endif /* F_SETOWN_BUG */ |
a6b00318 KH |
1522 | #ifdef O_NDELAY |
1523 | fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); | |
1524 | #endif | |
86a5659e JB |
1525 | #endif /* F_SETFL */ |
1526 | #ifdef BSD4_1 | |
1527 | if (interrupt_input) | |
1528 | reset_sigio (); | |
1529 | #endif /* BSD4_1 */ | |
91bac16a | 1530 | |
1334b321 | 1531 | while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) |
91bac16a | 1532 | ; |
86a5659e | 1533 | |
207bdbdb RS |
1534 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1535 | dos_ttcooked (); | |
1536 | #endif | |
1537 | ||
86a5659e JB |
1538 | #ifdef AIX |
1539 | hft_reset (); | |
1540 | #endif | |
9ae8f997 | 1541 | |
0ba73609 | 1542 | #ifdef BSD_PGRPS |
9ae8f997 JB |
1543 | widen_foreground_group (); |
1544 | #endif | |
86a5659e JB |
1545 | } |
1546 | \f | |
1547 | #ifdef HAVE_PTYS | |
1548 | ||
1549 | /* Set up the proper status flags for use of a pty. */ | |
1550 | ||
1551 | setup_pty (fd) | |
1552 | int fd; | |
1553 | { | |
1554 | /* I'm told that TOICREMOTE does not mean control chars | |
1555 | "can't be sent" but rather that they don't have | |
1556 | input-editing or signaling effects. | |
1557 | That should be good, because we have other ways | |
1558 | to do those things in Emacs. | |
1559 | However, telnet mode seems not to work on 4.2. | |
1560 | So TIOCREMOTE is turned off now. */ | |
1561 | ||
1562 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1563 | will hang. In particular, the "timeout" feature (which | |
1564 | causes a read to return if there is no data available) | |
1565 | does this. Also it is known that telnet mode will hang | |
1566 | in such a way that Emacs must be stopped (perhaps this | |
1567 | is the same problem). | |
1568 | ||
1569 | If TIOCREMOTE is turned off, then there is a bug in | |
1570 | hp-ux which sometimes loses data. Apparently the | |
1571 | code which blocks the master process when the internal | |
1572 | buffer fills up does not work. Other than this, | |
1573 | though, everything else seems to work fine. | |
1574 | ||
1575 | Since the latter lossage is more benign, we may as well | |
1576 | lose that way. -- cph */ | |
1577 | #ifdef FIONBIO | |
1578 | #ifdef SYSV_PTYS | |
1579 | { | |
1580 | int on = 1; | |
1581 | ioctl (fd, FIONBIO, &on); | |
1582 | } | |
1583 | #endif | |
1584 | #endif | |
1585 | #ifdef IBMRTAIX | |
1586 | /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ | |
1587 | /* ignore SIGHUP once we've started a child on a pty. Note that this may */ | |
1588 | /* cause EMACS not to die when it should, i.e., when its own controlling */ | |
1589 | /* tty goes away. I've complained to the AIX developers, and they may */ | |
1590 | /* change this behavior, but I'm not going to hold my breath. */ | |
1591 | signal (SIGHUP, SIG_IGN); | |
1592 | #endif | |
1593 | } | |
1594 | #endif /* HAVE_PTYS */ | |
1595 | \f | |
1596 | #ifdef VMS | |
1597 | ||
1598 | /* Assigning an input channel is done at the start of Emacs execution. | |
1599 | This is called each time Emacs is resumed, also, but does nothing | |
1600 | because input_chain is no longer zero. */ | |
1601 | ||
1602 | init_vms_input () | |
1603 | { | |
1604 | int status; | |
1605 | ||
91bac16a | 1606 | if (input_fd == 0) |
86a5659e | 1607 | { |
91bac16a | 1608 | status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); |
86a5659e JB |
1609 | if (! (status & 1)) |
1610 | LIB$STOP (status); | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | /* Deassigning the input channel is done before exiting. */ | |
1615 | ||
1616 | stop_vms_input () | |
1617 | { | |
91bac16a | 1618 | return SYS$DASSGN (input_fd); |
86a5659e JB |
1619 | } |
1620 | ||
1621 | short input_buffer; | |
1622 | ||
1623 | /* Request reading one character into the keyboard buffer. | |
1624 | This is done as soon as the buffer becomes empty. */ | |
1625 | ||
1626 | queue_kbd_input () | |
1627 | { | |
1628 | int status; | |
210b2b4f JB |
1629 | extern kbd_input_ast (); |
1630 | ||
86a5659e JB |
1631 | waiting_for_ast = 0; |
1632 | stop_input = 0; | |
91bac16a | 1633 | status = SYS$QIO (0, input_fd, IO$_READVBLK, |
86a5659e JB |
1634 | &input_iosb, kbd_input_ast, 1, |
1635 | &input_buffer, 1, 0, terminator_mask, 0, 0); | |
1636 | } | |
1637 | ||
1638 | int input_count; | |
1639 | ||
1640 | /* Ast routine that is called when keyboard input comes in | |
1641 | in accord with the SYS$QIO above. */ | |
1642 | ||
1643 | kbd_input_ast () | |
1644 | { | |
1645 | register int c = -1; | |
1646 | int old_errno = errno; | |
ffd56f97 | 1647 | extern EMACS_TIME *input_available_clear_time; |
86a5659e JB |
1648 | |
1649 | if (waiting_for_ast) | |
1650 | SYS$SETEF (input_ef); | |
1651 | waiting_for_ast = 0; | |
1652 | input_count++; | |
1653 | #ifdef ASTDEBUG | |
1654 | if (input_count == 25) | |
1655 | exit (1); | |
1656 | printf ("Ast # %d,", input_count); | |
1657 | printf (" iosb = %x, %x, %x, %x", | |
1658 | input_iosb.offset, input_iosb.status, input_iosb.termlen, | |
1659 | input_iosb.term); | |
1660 | #endif | |
1661 | if (input_iosb.offset) | |
1662 | { | |
1663 | c = input_buffer; | |
1664 | #ifdef ASTDEBUG | |
1665 | printf (", char = 0%o", c); | |
1666 | #endif | |
1667 | } | |
1668 | #ifdef ASTDEBUG | |
1669 | printf ("\n"); | |
1670 | fflush (stdout); | |
1671 | sleep (1); | |
1672 | #endif | |
1673 | if (! stop_input) | |
1674 | queue_kbd_input (); | |
1675 | if (c >= 0) | |
1676 | { | |
1677 | struct input_event e; | |
1678 | e.kind = ascii_keystroke; | |
210b2b4f JB |
1679 | XSET (e.code, Lisp_Int, c); |
1680 | #ifdef MULTI_FRAME | |
1681 | XSET(e.frame_or_window, Lisp_Frame, selected_frame); | |
1682 | #else | |
1683 | e.frame_or_window = Qnil; | |
1684 | #endif | |
86a5659e JB |
1685 | kbd_buffer_store_event (&e); |
1686 | } | |
ffd56f97 JB |
1687 | if (input_available_clear_time) |
1688 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
86a5659e JB |
1689 | errno = old_errno; |
1690 | } | |
1691 | ||
1692 | /* Wait until there is something in kbd_buffer. */ | |
1693 | ||
1694 | wait_for_kbd_input () | |
1695 | { | |
1696 | extern int have_process_input, process_exited; | |
1697 | ||
1698 | /* If already something, avoid doing system calls. */ | |
1699 | if (detect_input_pending ()) | |
1700 | { | |
1701 | return; | |
1702 | } | |
1703 | /* Clear a flag, and tell ast routine above to set it. */ | |
1704 | SYS$CLREF (input_ef); | |
1705 | waiting_for_ast = 1; | |
1706 | /* Check for timing error: ast happened while we were doing that. */ | |
1707 | if (!detect_input_pending ()) | |
1708 | { | |
1709 | /* No timing error: wait for flag to be set. */ | |
1710 | set_waiting_for_input (0); | |
1711 | SYS$WFLOR (input_ef, input_eflist); | |
1712 | clear_waiting_for_input (0); | |
1713 | if (!detect_input_pending ()) | |
1714 | /* Check for subprocess input availability */ | |
1715 | { | |
1716 | int dsp = have_process_input || process_exited; | |
1717 | ||
1718 | SYS$CLREF (process_ef); | |
1719 | if (have_process_input) | |
1720 | process_command_input (); | |
1721 | if (process_exited) | |
1722 | process_exit (); | |
1723 | if (dsp) | |
1724 | { | |
1725 | update_mode_lines++; | |
56b18525 | 1726 | prepare_menu_bars (); |
86a5659e JB |
1727 | redisplay_preserve_echo_area (); |
1728 | } | |
1729 | } | |
1730 | } | |
1731 | waiting_for_ast = 0; | |
1732 | } | |
1733 | ||
1734 | /* Get rid of any pending QIO, when we are about to suspend | |
1735 | or when we want to throw away pending input. | |
1736 | We wait for a positive sign that the AST routine has run | |
1737 | and therefore there is no I/O request queued when we return. | |
1738 | SYS$SETAST is used to avoid a timing error. */ | |
1739 | ||
1740 | end_kbd_input () | |
1741 | { | |
1742 | #ifdef ASTDEBUG | |
1743 | printf ("At end_kbd_input.\n"); | |
1744 | fflush (stdout); | |
1745 | sleep (1); | |
1746 | #endif | |
1747 | if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ | |
1748 | { | |
91bac16a | 1749 | SYS$CANCEL (input_fd); |
86a5659e JB |
1750 | return; |
1751 | } | |
1752 | ||
1753 | SYS$SETAST (0); | |
1754 | /* Clear a flag, and tell ast routine above to set it. */ | |
1755 | SYS$CLREF (input_ef); | |
1756 | waiting_for_ast = 1; | |
1757 | stop_input = 1; | |
91bac16a | 1758 | SYS$CANCEL (input_fd); |
86a5659e JB |
1759 | SYS$SETAST (1); |
1760 | SYS$WAITFR (input_ef); | |
1761 | waiting_for_ast = 0; | |
1762 | } | |
1763 | ||
1764 | /* Wait for either input available or time interval expiry. */ | |
1765 | ||
1766 | input_wait_timeout (timeval) | |
1767 | int timeval; /* Time to wait, in seconds */ | |
1768 | { | |
1769 | int time [2]; | |
1770 | static int zero = 0; | |
1771 | static int large = -10000000; | |
1772 | ||
1773 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1774 | ||
1775 | /* If already something, avoid doing system calls. */ | |
1776 | if (detect_input_pending ()) | |
1777 | { | |
1778 | return; | |
1779 | } | |
1780 | /* Clear a flag, and tell ast routine above to set it. */ | |
1781 | SYS$CLREF (input_ef); | |
1782 | waiting_for_ast = 1; | |
1783 | /* Check for timing error: ast happened while we were doing that. */ | |
1784 | if (!detect_input_pending ()) | |
1785 | { | |
1786 | /* No timing error: wait for flag to be set. */ | |
1787 | SYS$CANTIM (1, 0); | |
1788 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1789 | SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ | |
1790 | } | |
1791 | waiting_for_ast = 0; | |
1792 | } | |
1793 | ||
1794 | /* The standard `sleep' routine works some other way | |
1795 | and it stops working if you have ever quit out of it. | |
1796 | This one continues to work. */ | |
1797 | ||
1798 | sys_sleep (timeval) | |
1799 | int timeval; | |
1800 | { | |
1801 | int time [2]; | |
1802 | static int zero = 0; | |
1803 | static int large = -10000000; | |
1804 | ||
1805 | LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ | |
1806 | ||
1807 | SYS$CANTIM (1, 0); | |
1808 | if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ | |
1809 | SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ | |
1810 | } | |
1811 | ||
1812 | init_sigio () | |
1813 | { | |
1814 | request_sigio (); | |
1815 | } | |
1816 | ||
1817 | reset_sigio () | |
1818 | { | |
1819 | unrequest_sigio (); | |
1820 | } | |
1821 | ||
1822 | request_sigio () | |
1823 | { | |
1824 | croak ("request sigio"); | |
1825 | } | |
1826 | ||
1827 | unrequest_sigio () | |
1828 | { | |
1829 | croak ("unrequest sigio"); | |
1830 | } | |
1831 | ||
1832 | #endif /* VMS */ | |
1833 | \f | |
1834 | /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ | |
1835 | #ifndef CANNOT_DUMP | |
1836 | #define NEED_STARTS | |
1837 | #endif | |
1838 | ||
1839 | #ifndef SYSTEM_MALLOC | |
1840 | #ifndef NEED_STARTS | |
1841 | #define NEED_STARTS | |
1842 | #endif | |
1843 | #endif | |
1844 | ||
1845 | #ifdef NEED_STARTS | |
1846 | /* Some systems that cannot dump also cannot implement these. */ | |
1847 | ||
1848 | /* | |
1849 | * Return the address of the start of the text segment prior to | |
1850 | * doing an unexec. After unexec the return value is undefined. | |
1851 | * See crt0.c for further explanation and _start. | |
1852 | * | |
1853 | */ | |
1854 | ||
76cfb239 | 1855 | #if !defined (CANNOT_UNEXEC) && !defined (HAVE_TEXT_START) |
86a5659e JB |
1856 | char * |
1857 | start_of_text () | |
1858 | { | |
1859 | #ifdef TEXT_START | |
1860 | return ((char *) TEXT_START); | |
1861 | #else | |
1862 | #ifdef GOULD | |
1863 | extern csrt (); | |
1864 | return ((char *) csrt); | |
1865 | #else /* not GOULD */ | |
1866 | extern int _start (); | |
1867 | return ((char *) _start); | |
1868 | #endif /* GOULD */ | |
1869 | #endif /* TEXT_START */ | |
1870 | } | |
76cfb239 | 1871 | #endif /* not CANNOT_UNEXEC and not HAVE_TEXT_START */ |
86a5659e JB |
1872 | |
1873 | /* | |
1874 | * Return the address of the start of the data segment prior to | |
1875 | * doing an unexec. After unexec the return value is undefined. | |
1876 | * See crt0.c for further information and definition of data_start. | |
1877 | * | |
1878 | * Apparently, on BSD systems this is etext at startup. On | |
1879 | * USG systems (swapping) this is highly mmu dependent and | |
1880 | * is also dependent on whether or not the program is running | |
1881 | * with shared text. Generally there is a (possibly large) | |
1882 | * gap between end of text and start of data with shared text. | |
1883 | * | |
1884 | * On Uniplus+ systems with shared text, data starts at a | |
1885 | * fixed address. Each port (from a given oem) is generally | |
1886 | * different, and the specific value of the start of data can | |
1887 | * be obtained via the UniPlus+ specific "uvar" system call, | |
1888 | * however the method outlined in crt0.c seems to be more portable. | |
1889 | * | |
1890 | * Probably what will have to happen when a USG unexec is available, | |
1891 | * at least on UniPlus, is temacs will have to be made unshared so | |
1892 | * that text and data are contiguous. Then once loadup is complete, | |
1893 | * unexec will produce a shared executable where the data can be | |
1894 | * at the normal shared text boundry and the startofdata variable | |
1895 | * will be patched by unexec to the correct value. | |
1896 | * | |
1897 | */ | |
1898 | ||
1899 | char * | |
1900 | start_of_data () | |
1901 | { | |
1902 | #ifdef DATA_START | |
1903 | return ((char *) DATA_START); | |
6c65530f JB |
1904 | #else |
1905 | #ifdef ORDINARY_LINK | |
1906 | /* | |
1907 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
1908 | * data_start isn't defined. We take the address of environ, which | |
1909 | * is known to live at or near the start of the system crt0.c, and | |
1910 | * we don't sweat the handful of bytes that might lose. | |
1911 | */ | |
1912 | extern char **environ; | |
1913 | ||
1914 | return((char *) &environ); | |
86a5659e JB |
1915 | #else |
1916 | extern int data_start; | |
1917 | return ((char *) &data_start); | |
6c65530f JB |
1918 | #endif /* ORDINARY_LINK */ |
1919 | #endif /* DATA_START */ | |
86a5659e JB |
1920 | } |
1921 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ | |
1922 | ||
1923 | #ifndef CANNOT_DUMP | |
1924 | /* Some systems that cannot dump also cannot implement these. */ | |
1925 | ||
1926 | /* | |
1927 | * Return the address of the end of the text segment prior to | |
1928 | * doing an unexec. After unexec the return value is undefined. | |
1929 | */ | |
1930 | ||
1931 | char * | |
1932 | end_of_text () | |
1933 | { | |
1934 | #ifdef TEXT_END | |
1935 | return ((char *) TEXT_END); | |
1936 | #else | |
1937 | extern int etext; | |
1938 | return ((char *) &etext); | |
1939 | #endif | |
1940 | } | |
1941 | ||
1942 | /* | |
1943 | * Return the address of the end of the data segment prior to | |
1944 | * doing an unexec. After unexec the return value is undefined. | |
1945 | */ | |
1946 | ||
1947 | char * | |
1948 | end_of_data () | |
1949 | { | |
1950 | #ifdef DATA_END | |
1951 | return ((char *) DATA_END); | |
1952 | #else | |
1953 | extern int edata; | |
1954 | return ((char *) &edata); | |
1955 | #endif | |
1956 | } | |
1957 | ||
1958 | #endif /* not CANNOT_DUMP */ | |
1959 | \f | |
67004ffb | 1960 | /* get_system_name returns as its value |
86a5659e JB |
1961 | a string for the Lisp function system-name to return. */ |
1962 | ||
1963 | #ifdef BSD4_1 | |
1964 | #include <whoami.h> | |
1965 | #endif | |
1966 | ||
e36ba278 RS |
1967 | /* Can't have this within the function since `static' is #defined to |
1968 | nothing for some USG systems. */ | |
67004ffb KH |
1969 | static char *get_system_name_cache; |
1970 | static int get_system_name_predump_p; | |
86a5659e | 1971 | |
f8a80313 | 1972 | #ifndef BSD4_1 |
f8a80313 RS |
1973 | #ifndef VMS |
1974 | #ifdef HAVE_SOCKETS | |
1975 | #include <sys/socket.h> | |
1976 | #include <netdb.h> | |
1977 | #endif /* HAVE_SOCKETS */ | |
1978 | #endif /* not VMS */ | |
f8a80313 RS |
1979 | #endif /* not BSD4_1 */ |
1980 | ||
86a5659e JB |
1981 | char * |
1982 | get_system_name () | |
1983 | { | |
86a5659e JB |
1984 | #ifdef BSD4_1 |
1985 | return sysname; | |
67004ffb KH |
1986 | #else |
1987 | #ifndef CANNOT_DUMP | |
1988 | /* If the cached value is from before the dump, and we've dumped | |
1989 | since then, then the cached value is no good. */ | |
1990 | if (get_system_name_predump_p && initialized && get_system_name_cache) | |
86a5659e | 1991 | { |
67004ffb KH |
1992 | xfree (get_system_name_cache); |
1993 | get_system_name_cache = 0; | |
86a5659e | 1994 | } |
67004ffb KH |
1995 | #endif |
1996 | if (!get_system_name_cache) | |
f8a80313 | 1997 | { |
67004ffb KH |
1998 | /* No cached value, so get the name from the system. */ |
1999 | #ifdef VMS | |
2000 | char *sp; | |
2001 | if ((sp = egetenv ("SYS$NODE")) == 0) | |
2002 | sp = "vax-vms"; | |
2003 | else | |
4f8804a1 | 2004 | { |
67004ffb | 2005 | char *end; |
210b2b4f | 2006 | |
67004ffb KH |
2007 | if ((end = index (sp, ':')) != 0) |
2008 | *end = '\0'; | |
2009 | } | |
2010 | get_system_name_cache = (char *) xmalloc (strlen (sp) + 1); | |
2011 | strcpy (get_system_name_cache, sp); | |
2012 | #else | |
210b2b4f | 2013 | #ifndef HAVE_GETHOSTNAME |
67004ffb KH |
2014 | struct utsname uts; |
2015 | uname (&uts); | |
2016 | get_system_name_cache = (char *) xmalloc (strlen (uts.nodename) + 1); | |
2017 | strcpy (get_system_name_cache, uts.nodename); | |
2018 | #else /* HAVE_GETHOSTNAME */ | |
2019 | { | |
2020 | int hostname_size = 256; | |
2021 | char *hostname = (char *) xmalloc (hostname_size); | |
2022 | ||
2023 | /* Try to get the host name; if the buffer is too short, try | |
2024 | again. Apparently, the only indication gethostname gives of | |
2025 | whether the buffer was large enough is the presence or absence | |
2026 | of a '\0' in the string. Eech. */ | |
2027 | for (;;) | |
2028 | { | |
2029 | gethostname (hostname, hostname_size - 1); | |
2030 | hostname[hostname_size - 1] = '\0'; | |
2031 | ||
2032 | /* Was the buffer large enough for the '\0'? */ | |
2033 | if (strlen (hostname) < hostname_size - 1) | |
2034 | break; | |
2035 | ||
2036 | hostname_size <<= 1; | |
2037 | hostname = (char *) xrealloc (hostname, hostname_size); | |
2038 | } | |
2039 | get_system_name_cache = hostname; | |
2040 | #ifdef HAVE_SOCKETS | |
2041 | /* Turn the hostname into the official, fully-qualified hostname. | |
2042 | Don't do this if we're going to dump; this can confuse system | |
2043 | libraries on some machines and make the dumped emacs core dump. */ | |
2044 | #ifndef CANNOT_DUMP | |
2045 | if (initialized) | |
2046 | #endif /* not CANNOT_DUMP */ | |
2047 | { | |
2048 | struct hostent *hp = gethostbyname (hostname); | |
2049 | if (hp) | |
2050 | { | |
2051 | char *fqdn = hp->h_name; | |
ab1649fe RS |
2052 | char *p; |
2053 | ||
67004ffb KH |
2054 | if (!index (fqdn, '.')) |
2055 | { | |
2056 | /* We still don't have a fully qualified domain name. | |
2057 | Try to find one in the list of alternate names */ | |
2058 | char **alias = hp->h_aliases; | |
2059 | while (*alias && !index (*alias, '.')) | |
2060 | alias++; | |
2061 | if (*alias) | |
2062 | fqdn = *alias; | |
2063 | } | |
2064 | hostname = (char *) xrealloc (hostname, strlen (fqdn) + 1); | |
2065 | strcpy (hostname, fqdn); | |
ab1649fe RS |
2066 | #if 0 |
2067 | /* Convert the host name to lower case. */ | |
2068 | /* Using ctype.h here would introduce a possible locale | |
2069 | dependence that is probably wrong for hostnames. */ | |
2070 | p = hostname | |
2071 | while (*p) | |
2072 | { | |
2073 | if (*p >= 'A' && *p <= 'Z') | |
2074 | *p += 'a' - 'A'; | |
2075 | p++; | |
2076 | } | |
2077 | #endif | |
67004ffb KH |
2078 | } |
2079 | } | |
2080 | #endif /* HAVE_SOCKETS */ | |
2081 | get_system_name_cache = hostname; | |
2082 | } | |
2083 | #endif /* HAVE_GETHOSTNAME */ | |
210b2b4f | 2084 | #endif /* VMS */ |
67004ffb KH |
2085 | #ifndef CANNOT_DUMP |
2086 | get_system_name_predump_p = !initialized; | |
2087 | #endif | |
2088 | } | |
2089 | return (get_system_name_cache); | |
2090 | #endif /* BSD4_1 */ | |
2091 | } | |
86a5659e JB |
2092 | \f |
2093 | #ifndef VMS | |
2094 | #ifndef HAVE_SELECT | |
2095 | ||
2096 | #ifdef HAVE_X_WINDOWS | |
2097 | /* Cause explanatory error message at compile time, | |
2098 | since the select emulation is not good enough for X. */ | |
2099 | int *x = &x_windows_lose_if_no_select_system_call; | |
2100 | #endif | |
2101 | ||
2102 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
2103 | * Only checks read descriptors. | |
2104 | */ | |
2105 | /* How long to wait between checking fds in select */ | |
2106 | #define SELECT_PAUSE 1 | |
2107 | int select_alarmed; | |
2108 | ||
2109 | /* For longjmp'ing back to read_input_waiting. */ | |
2110 | ||
2111 | jmp_buf read_alarm_throw; | |
2112 | ||
2113 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
2114 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
2115 | ||
2116 | int read_alarm_should_throw; | |
2117 | ||
2118 | SIGTYPE | |
2119 | select_alarm () | |
2120 | { | |
2121 | select_alarmed = 1; | |
2122 | #ifdef BSD4_1 | |
2123 | sigrelse (SIGALRM); | |
2124 | #else /* not BSD4_1 */ | |
2125 | signal (SIGALRM, SIG_IGN); | |
2126 | #endif /* not BSD4_1 */ | |
2127 | if (read_alarm_should_throw) | |
2128 | longjmp (read_alarm_throw, 1); | |
2129 | } | |
2130 | ||
2131 | /* Only rfds are checked. */ | |
2132 | int | |
2133 | select (nfds, rfds, wfds, efds, timeout) | |
2134 | int nfds; | |
2135 | int *rfds, *wfds, *efds, *timeout; | |
2136 | { | |
2137 | int ravail = 0, orfds = 0, old_alarm; | |
2138 | int timeoutval = timeout ? *timeout : 100000; | |
2139 | int *local_timeout = &timeoutval; | |
2140 | extern int proc_buffered_char[]; | |
2141 | #ifndef subprocesses | |
2142 | int process_tick = 0, update_tick = 0; | |
2143 | #else | |
2144 | extern int process_tick, update_tick; | |
2145 | #endif | |
2146 | SIGTYPE (*old_trap) (); | |
2147 | unsigned char buf; | |
2148 | ||
2149 | if (rfds) | |
2150 | { | |
2151 | orfds = *rfds; | |
2152 | *rfds = 0; | |
2153 | } | |
2154 | if (wfds) | |
2155 | *wfds = 0; | |
2156 | if (efds) | |
2157 | *efds = 0; | |
2158 | ||
2159 | /* If we are looking only for the terminal, with no timeout, | |
2160 | just read it and wait -- that's more efficient. */ | |
2161 | if (orfds == 1 && *local_timeout == 100000 && process_tick == update_tick) | |
2162 | { | |
2163 | if (! detect_input_pending ()) | |
2164 | read_input_waiting (); | |
2165 | *rfds = 1; | |
2166 | return 1; | |
2167 | } | |
2168 | ||
2169 | /* Once a second, till the timer expires, check all the flagged read | |
2170 | * descriptors to see if any input is available. If there is some then | |
2171 | * set the corresponding bit in the return copy of rfds. | |
2172 | */ | |
2173 | while (1) | |
2174 | { | |
2175 | register int to_check, bit, fd; | |
2176 | ||
2177 | if (rfds) | |
2178 | { | |
2179 | for (to_check = nfds, bit = 1, fd = 0; --to_check >= 0; bit <<= 1, fd++) | |
2180 | { | |
2181 | if (orfds & bit) | |
2182 | { | |
2183 | int avail = 0, status = 0; | |
2184 | ||
2185 | if (bit == 1) | |
2186 | avail = detect_input_pending (); /* Special keyboard handler */ | |
2187 | else | |
2188 | { | |
2189 | #ifdef FIONREAD | |
2190 | status = ioctl (fd, FIONREAD, &avail); | |
2191 | #else /* no FIONREAD */ | |
207bdbdb RS |
2192 | #ifdef MSDOS |
2193 | abort (); /* I don't think we need it. */ | |
2194 | #else /* not MSDOS */ | |
86a5659e JB |
2195 | /* Hoping it will return -1 if nothing available |
2196 | or 0 if all 0 chars requested are read. */ | |
2197 | if (proc_buffered_char[fd] >= 0) | |
2198 | avail = 1; | |
2199 | else | |
2200 | { | |
2201 | avail = read (fd, &buf, 1); | |
2202 | if (avail > 0) | |
2203 | proc_buffered_char[fd] = buf; | |
2204 | } | |
207bdbdb | 2205 | #endif /* not MSDOS */ |
86a5659e JB |
2206 | #endif /* no FIONREAD */ |
2207 | } | |
2208 | if (status >= 0 && avail > 0) | |
2209 | { | |
2210 | (*rfds) |= bit; | |
2211 | ravail++; | |
2212 | } | |
2213 | } | |
2214 | } | |
2215 | } | |
2216 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2217 | break; | |
2218 | old_alarm = alarm (0); | |
34567704 | 2219 | old_trap = signal (SIGALRM, select_alarm); |
86a5659e JB |
2220 | select_alarmed = 0; |
2221 | alarm (SELECT_PAUSE); | |
2222 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ | |
2223 | while (select_alarmed == 0 && *local_timeout != 0 | |
2224 | && process_tick == update_tick) | |
2225 | { | |
207bdbdb RS |
2226 | #ifdef MSDOS |
2227 | sleep_or_kbd_hit (SELECT_PAUSE, (orfds & 1) != 0); | |
2228 | select_alarm (); | |
2229 | #else /* not MSDOS */ | |
86a5659e JB |
2230 | /* If we are interested in terminal input, |
2231 | wait by reading the terminal. | |
2232 | That makes instant wakeup for terminal input at least. */ | |
2233 | if (orfds & 1) | |
2234 | { | |
2235 | read_input_waiting (); | |
2236 | if (detect_input_pending ()) | |
2237 | select_alarmed = 1; | |
2238 | } | |
2239 | else | |
2240 | pause (); | |
207bdbdb | 2241 | #endif /* not MSDOS */ |
86a5659e JB |
2242 | } |
2243 | (*local_timeout) -= SELECT_PAUSE; | |
2244 | /* Reset the old alarm if there was one */ | |
2245 | alarm (0); | |
2246 | signal (SIGALRM, old_trap); | |
2247 | if (old_alarm != 0) | |
2248 | { | |
2249 | /* Reset or forge an interrupt for the original handler. */ | |
2250 | old_alarm -= SELECT_PAUSE; | |
2251 | if (old_alarm <= 0) | |
2252 | kill (getpid (), SIGALRM); /* Fake an alarm with the orig' handler */ | |
2253 | else | |
2254 | alarm (old_alarm); | |
2255 | } | |
2256 | if (*local_timeout == 0) /* Stop on timer being cleared */ | |
2257 | break; | |
2258 | } | |
2259 | return ravail; | |
2260 | } | |
2261 | ||
2262 | /* Read keyboard input into the standard buffer, | |
2263 | waiting for at least one character. */ | |
2264 | ||
2265 | /* Make all keyboard buffers much bigger when using X windows. */ | |
2266 | #ifdef HAVE_X_WINDOWS | |
2267 | #define BUFFER_SIZE_FACTOR 16 | |
2268 | #else | |
2269 | #define BUFFER_SIZE_FACTOR 1 | |
2270 | #endif | |
2271 | ||
2272 | read_input_waiting () | |
2273 | { | |
86a5659e | 2274 | struct input_event e; |
34567704 JB |
2275 | int nread, i; |
2276 | extern int quit_char; | |
86a5659e JB |
2277 | |
2278 | if (read_socket_hook) | |
2279 | { | |
f4a7e5bd RS |
2280 | struct input_event buf[256]; |
2281 | ||
86a5659e JB |
2282 | read_alarm_should_throw = 0; |
2283 | if (! setjmp (read_alarm_throw)) | |
f4a7e5bd | 2284 | nread = (*read_socket_hook) (0, buf, 256, 1, 0); |
86a5659e JB |
2285 | else |
2286 | nread = -1; | |
f4a7e5bd RS |
2287 | |
2288 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2289 | for (i = 0; i < nread; i++) | |
2290 | { | |
2291 | kbd_buffer_store_event (&buf[i]); | |
2292 | /* Don't look at input that follows a C-g too closely. | |
2293 | This reduces lossage due to autorepeat on C-g. */ | |
2294 | if (buf[i].kind == ascii_keystroke | |
2295 | && XINT(buf[i].code) == quit_char) | |
2296 | break; | |
2297 | } | |
86a5659e JB |
2298 | } |
2299 | else | |
86a5659e | 2300 | { |
f4a7e5bd RS |
2301 | char buf[3]; |
2302 | nread = read (fileno (stdin), buf, 1); | |
2303 | ||
2304 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
2305 | e.kind = ascii_keystroke; | |
2306 | e.frame_or_window = selected_frame; | |
2307 | e.modifiers = 0; | |
2308 | for (i = 0; i < nread; i++) | |
a00d5589 | 2309 | { |
f4a7e5bd RS |
2310 | /* Convert chars > 0177 to meta events if desired. |
2311 | We do this under the same conditions that read_avail_input does. */ | |
2312 | if (read_socket_hook == 0) | |
2313 | { | |
2314 | /* If the user says she has a meta key, then believe her. */ | |
2315 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2316 | e.modifiers = meta_modifier; | |
2317 | if (meta_key != 2) | |
2318 | buf[i] &= ~0x80; | |
2319 | } | |
b95520f5 | 2320 | |
f4a7e5bd RS |
2321 | XSET (e.code, Lisp_Int, buf[i]); |
2322 | kbd_buffer_store_event (&e); | |
2323 | /* Don't look at input that follows a C-g too closely. | |
2324 | This reduces lossage due to autorepeat on C-g. */ | |
2325 | if (buf[i] == quit_char) | |
2326 | break; | |
2327 | } | |
86a5659e JB |
2328 | } |
2329 | } | |
2330 | ||
2331 | #endif /* not HAVE_SELECT */ | |
2332 | #endif /* not VMS */ | |
2333 | \f | |
2334 | #ifdef BSD4_1 | |
86a5659e JB |
2335 | /* |
2336 | * Partially emulate 4.2 open call. | |
2337 | * open is defined as this in 4.1. | |
2338 | * | |
2339 | * - added by Michael Bloom @ Citicorp/TTI | |
2340 | * | |
2341 | */ | |
2342 | ||
2343 | int | |
2344 | sys_open (path, oflag, mode) | |
2345 | char *path; | |
2346 | int oflag, mode; | |
2347 | { | |
2348 | if (oflag & O_CREAT) | |
2349 | return creat (path, mode); | |
2350 | else | |
2351 | return open (path, oflag); | |
2352 | } | |
2353 | ||
2354 | init_sigio () | |
2355 | { | |
2356 | if (noninteractive) | |
2357 | return; | |
2358 | lmode = LINTRUP | lmode; | |
2359 | ioctl (0, TIOCLSET, &lmode); | |
2360 | } | |
2361 | ||
2362 | reset_sigio () | |
2363 | { | |
2364 | if (noninteractive) | |
2365 | return; | |
2366 | lmode = ~LINTRUP & lmode; | |
2367 | ioctl (0, TIOCLSET, &lmode); | |
2368 | } | |
2369 | ||
2370 | request_sigio () | |
2371 | { | |
2372 | sigrelse (SIGTINT); | |
2373 | ||
2374 | interrupts_deferred = 0; | |
2375 | } | |
2376 | ||
2377 | unrequest_sigio () | |
2378 | { | |
2379 | sighold (SIGTINT); | |
2380 | ||
2381 | interrupts_deferred = 1; | |
2382 | } | |
2383 | ||
2384 | /* still inside #ifdef BSD4_1 */ | |
2385 | #ifdef subprocesses | |
2386 | ||
2387 | int sigheld; /* Mask of held signals */ | |
2388 | ||
2389 | sigholdx (signum) | |
2390 | int signum; | |
2391 | { | |
2392 | sigheld |= sigbit (signum); | |
2393 | sighold (signum); | |
2394 | } | |
2395 | ||
2396 | sigisheld (signum) | |
2397 | int signum; | |
2398 | { | |
2399 | sigheld |= sigbit (signum); | |
2400 | } | |
2401 | ||
2402 | sigunhold (signum) | |
2403 | int signum; | |
2404 | { | |
2405 | sigheld &= ~sigbit (signum); | |
2406 | sigrelse (signum); | |
2407 | } | |
2408 | ||
2409 | sigfree () /* Free all held signals */ | |
2410 | { | |
2411 | int i; | |
2412 | for (i = 0; i < NSIG; i++) | |
2413 | if (sigheld & sigbit (i)) | |
2414 | sigrelse (i); | |
2415 | sigheld = 0; | |
2416 | } | |
2417 | ||
2418 | sigbit (i) | |
2419 | { | |
2420 | return 1 << (i - 1); | |
2421 | } | |
2422 | #endif /* subprocesses */ | |
2423 | #endif /* BSD4_1 */ | |
2424 | \f | |
2425 | /* POSIX signals support - DJB */ | |
2426 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2427 | ||
2428 | #ifdef POSIX_SIGNALS | |
2429 | ||
2430 | sigset_t old_mask, empty_mask, full_mask, temp_mask; | |
2431 | static struct sigaction new_action, old_action; | |
2432 | ||
2433 | init_signals () | |
2434 | { | |
00eaaa32 JB |
2435 | sigemptyset (&empty_mask); |
2436 | sigfillset (&full_mask); | |
86a5659e JB |
2437 | } |
2438 | ||
86a5659e JB |
2439 | signal_handler_t |
2440 | sys_signal (int signal_number, signal_handler_t action) | |
2441 | { | |
2442 | #ifdef DGUX | |
2443 | /* This gets us restartable system calls for efficiency. | |
2444 | The "else" code will works as well. */ | |
2445 | return (berk_signal (signal_number, action)); | |
2446 | #else | |
2447 | sigemptyset (&new_action.sa_mask); | |
2448 | new_action.sa_handler = action; | |
25ab68af RS |
2449 | #ifdef SA_RESTART |
2450 | /* Emacs mostly works better with restartable system services. If this | |
2451 | * flag exists, we probably want to turn it on here. | |
2452 | */ | |
2453 | new_action.sa_flags = SA_RESTART; | |
2454 | #else | |
4a785b6e | 2455 | new_action.sa_flags = 0; |
25ab68af | 2456 | #endif |
d32b2f3c | 2457 | sigaction (signal_number, &new_action, &old_action); |
86a5659e JB |
2458 | return (old_action.sa_handler); |
2459 | #endif /* DGUX */ | |
2460 | } | |
2461 | ||
e065a56e JB |
2462 | #ifndef __GNUC__ |
2463 | /* If we're compiling with GCC, we don't need this function, since it | |
2464 | can be written as a macro. */ | |
2465 | sigset_t | |
2466 | sys_sigmask (int sig) | |
2467 | { | |
2468 | sigset_t mask; | |
2469 | sigemptyset (&mask); | |
2470 | sigaddset (&mask, sig); | |
2471 | return mask; | |
2472 | } | |
2473 | #endif | |
2474 | ||
86a5659e JB |
2475 | int |
2476 | sys_sigpause (sigset_t new_mask) | |
2477 | { | |
2478 | /* pause emulating berk sigpause... */ | |
2479 | sigsuspend (&new_mask); | |
2480 | return (EINTR); | |
2481 | } | |
2482 | ||
2483 | /* I'd like to have these guys return pointers to the mask storage in here, | |
2484 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2485 | safe and pass the structure. It normally won't be more than 2 bytes | |
2486 | anyhow. - DJB */ | |
2487 | ||
2488 | sigset_t | |
2489 | sys_sigblock (sigset_t new_mask) | |
2490 | { | |
2491 | sigset_t old_mask; | |
2492 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2493 | return (old_mask); | |
2494 | } | |
2495 | ||
2496 | sigset_t | |
2497 | sys_sigunblock (sigset_t new_mask) | |
2498 | { | |
2499 | sigset_t old_mask; | |
2500 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2501 | return (old_mask); | |
2502 | } | |
2503 | ||
2504 | sigset_t | |
2505 | sys_sigsetmask (sigset_t new_mask) | |
2506 | { | |
2507 | sigset_t old_mask; | |
2508 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2509 | return (old_mask); | |
2510 | } | |
2511 | ||
2512 | #endif /* POSIX_SIGNALS */ | |
2513 | \f | |
2514 | #ifndef BSTRING | |
2515 | ||
739f36e2 RS |
2516 | #ifndef bzero |
2517 | ||
86a5659e JB |
2518 | void |
2519 | bzero (b, length) | |
2520 | register char *b; | |
2521 | register int length; | |
2522 | { | |
2523 | #ifdef VMS | |
2524 | short zero = 0; | |
2525 | long max_str = 65535; | |
2526 | ||
2527 | while (length > max_str) { | |
2528 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2529 | length -= max_str; | |
2530 | b += max_str; | |
2531 | } | |
2532 | max_str = length; | |
2533 | (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); | |
2534 | #else | |
2535 | while (length-- > 0) | |
2536 | *b++ = 0; | |
2537 | #endif /* not VMS */ | |
2538 | } | |
2539 | ||
739f36e2 RS |
2540 | #endif /* no bzero */ |
2541 | ||
2542 | #ifndef bcopy | |
86a5659e JB |
2543 | /* Saying `void' requires a declaration, above, where bcopy is used |
2544 | and that declaration causes pain for systems where bcopy is a macro. */ | |
2545 | bcopy (b1, b2, length) | |
2546 | register char *b1; | |
2547 | register char *b2; | |
2548 | register int length; | |
2549 | { | |
2550 | #ifdef VMS | |
2551 | long max_str = 65535; | |
2552 | ||
2553 | while (length > max_str) { | |
2554 | (void) LIB$MOVC3 (&max_str, b1, b2); | |
2555 | length -= max_str; | |
2556 | b1 += max_str; | |
2557 | b2 += max_str; | |
2558 | } | |
2559 | max_str = length; | |
2560 | (void) LIB$MOVC3 (&length, b1, b2); | |
2561 | #else | |
2562 | while (length-- > 0) | |
2563 | *b2++ = *b1++; | |
2564 | #endif /* not VMS */ | |
2565 | } | |
739f36e2 | 2566 | #endif /* no bcopy */ |
86a5659e | 2567 | |
739f36e2 | 2568 | #ifndef bcmp |
86a5659e JB |
2569 | int |
2570 | bcmp (b1, b2, length) /* This could be a macro! */ | |
2571 | register char *b1; | |
2572 | register char *b2; | |
2573 | register int length; | |
2574 | { | |
2575 | #ifdef VMS | |
2576 | struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; | |
2577 | struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; | |
2578 | ||
2579 | return STR$COMPARE (&src1, &src2); | |
2580 | #else | |
2581 | while (length-- > 0) | |
2582 | if (*b1++ != *b2++) | |
2583 | return 1; | |
2584 | ||
2585 | return 0; | |
2586 | #endif /* not VMS */ | |
2587 | } | |
739f36e2 RS |
2588 | #endif /* no bcmp */ |
2589 | ||
86a5659e JB |
2590 | #endif /* not BSTRING */ |
2591 | \f | |
9927a7b1 | 2592 | #ifndef HAVE_RANDOM |
86a5659e JB |
2593 | #ifdef USG |
2594 | /* | |
2595 | * The BSD random returns numbers in the range of | |
2596 | * 0 to 2e31 - 1. The USG rand returns numbers in the | |
2597 | * range of 0 to 2e15 - 1. This is probably not significant | |
2598 | * in this usage. | |
2599 | */ | |
2600 | ||
2601 | long | |
2602 | random () | |
2603 | { | |
2604 | /* Arrange to return a range centered on zero. */ | |
2605 | return (rand () << 15) + rand () - (1 << 29); | |
2606 | } | |
2607 | ||
2608 | srandom (arg) | |
2609 | int arg; | |
2610 | { | |
2611 | srand (arg); | |
2612 | } | |
2613 | ||
2614 | #endif /* USG */ | |
2615 | ||
2616 | #ifdef BSD4_1 | |
2617 | long random () | |
2618 | { | |
2619 | /* Arrange to return a range centered on zero. */ | |
2620 | return (rand () << 15) + rand () - (1 << 29); | |
2621 | } | |
2622 | ||
2623 | srandom (arg) | |
2624 | int arg; | |
2625 | { | |
2626 | srand (arg); | |
2627 | } | |
2628 | #endif /* BSD4_1 */ | |
9927a7b1 | 2629 | #endif |
86a5659e JB |
2630 | \f |
2631 | #ifdef WRONG_NAME_INSQUE | |
2632 | ||
2633 | insque (q,p) | |
2634 | caddr_t q,p; | |
2635 | { | |
2636 | _insque (q,p); | |
2637 | } | |
2638 | ||
2639 | #endif | |
2640 | \f | |
2641 | #ifdef VMS | |
2642 | ||
2643 | #ifdef getenv | |
2644 | /* If any place else asks for the TERM variable, | |
2645 | allow it to be overridden with the EMACS_TERM variable | |
2646 | before attempting to translate the logical name TERM. As a last | |
2647 | resort, ask for VAX C's special idea of the TERM variable. */ | |
2648 | #undef getenv | |
2649 | char * | |
2650 | sys_getenv (name) | |
2651 | char *name; | |
2652 | { | |
2653 | register char *val; | |
2654 | static char buf[256]; | |
2655 | static struct dsc$descriptor_s equiv | |
2656 | = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; | |
2657 | static struct dsc$descriptor_s d_name | |
2658 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
2659 | short eqlen; | |
2660 | ||
2661 | if (!strcmp (name, "TERM")) | |
2662 | { | |
2663 | val = (char *) getenv ("EMACS_TERM"); | |
2664 | if (val) | |
2665 | return val; | |
2666 | } | |
2667 | ||
2668 | d_name.dsc$w_length = strlen (name); | |
2669 | d_name.dsc$a_pointer = name; | |
986ffb24 | 2670 | if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) |
86a5659e JB |
2671 | { |
2672 | char *str = (char *) xmalloc (eqlen + 1); | |
2673 | bcopy (buf, str, eqlen); | |
2674 | str[eqlen] = '\0'; | |
2675 | /* This is a storage leak, but a pain to fix. With luck, | |
2676 | no one will ever notice. */ | |
2677 | return str; | |
2678 | } | |
2679 | return (char *) getenv (name); | |
2680 | } | |
2681 | #endif /* getenv */ | |
2682 | ||
2683 | #ifdef abort | |
2684 | /* Since VMS doesn't believe in core dumps, the only way to debug this beast is | |
2685 | to force a call on the debugger from within the image. */ | |
2686 | #undef abort | |
2687 | sys_abort () | |
2688 | { | |
2689 | reset_sys_modes (); | |
2690 | LIB$SIGNAL (SS$_DEBUG); | |
2691 | } | |
2692 | #endif /* abort */ | |
2693 | #endif /* VMS */ | |
2694 | \f | |
2695 | #ifdef VMS | |
2696 | #ifdef LINK_CRTL_SHARE | |
2697 | #ifdef SHAREABLE_LIB_BUG | |
eb8c3be9 | 2698 | /* Variables declared noshare and initialized in sharable libraries |
86a5659e JB |
2699 | cannot be shared. The VMS linker incorrectly forces you to use a private |
2700 | version which is uninitialized... If not for this "feature", we | |
2701 | could use the C library definition of sys_nerr and sys_errlist. */ | |
2702 | int sys_nerr = 35; | |
2703 | char *sys_errlist[] = | |
2704 | { | |
2705 | "error 0", | |
2706 | "not owner", | |
2707 | "no such file or directory", | |
2708 | "no such process", | |
2709 | "interrupted system call", | |
2710 | "i/o error", | |
2711 | "no such device or address", | |
2712 | "argument list too long", | |
2713 | "exec format error", | |
2714 | "bad file number", | |
2715 | "no child process", | |
2716 | "no more processes", | |
2717 | "not enough memory", | |
2718 | "permission denied", | |
2719 | "bad address", | |
2720 | "block device required", | |
2721 | "mount devices busy", | |
2722 | "file exists", | |
2723 | "cross-device link", | |
2724 | "no such device", | |
2725 | "not a directory", | |
2726 | "is a directory", | |
2727 | "invalid argument", | |
2728 | "file table overflow", | |
2729 | "too many open files", | |
2730 | "not a typewriter", | |
2731 | "text file busy", | |
2732 | "file too big", | |
2733 | "no space left on device", | |
2734 | "illegal seek", | |
2735 | "read-only file system", | |
2736 | "too many links", | |
2737 | "broken pipe", | |
2738 | "math argument", | |
2739 | "result too large", | |
2740 | "I/O stream empty", | |
2741 | "vax/vms specific error code nontranslatable error" | |
2742 | }; | |
2743 | #endif /* SHAREABLE_LIB_BUG */ | |
2744 | #endif /* LINK_CRTL_SHARE */ | |
2745 | #endif /* VMS */ | |
7088d1ca RM |
2746 | |
2747 | #ifndef HAVE_STRERROR | |
2748 | char * | |
2749 | strerror (errnum) | |
2750 | int errnum; | |
2751 | { | |
2752 | extern char *sys_errlist[]; | |
2753 | extern int sys_nerr; | |
2754 | ||
2755 | if (errnum >= 0 && errnum < sys_nerr) | |
2756 | return sys_errlist[errnum]; | |
2757 | return (char *) "Unknown error"; | |
2758 | } | |
2759 | ||
2760 | #endif /* ! HAVE_STRERROR */ | |
86a5659e JB |
2761 | \f |
2762 | #ifdef INTERRUPTIBLE_OPEN | |
2763 | ||
2764 | int | |
2765 | /* VARARGS 2 */ | |
2766 | sys_open (path, oflag, mode) | |
2767 | char *path; | |
2768 | int oflag, mode; | |
2769 | { | |
2770 | register int rtnval; | |
2771 | ||
2772 | while ((rtnval = open (path, oflag, mode)) == -1 | |
2773 | && (errno == EINTR)); | |
2774 | return (rtnval); | |
2775 | } | |
2776 | ||
2777 | #endif /* INTERRUPTIBLE_OPEN */ | |
2778 | ||
2779 | #ifdef INTERRUPTIBLE_CLOSE | |
2780 | ||
2781 | sys_close (fd) | |
2782 | int fd; | |
2783 | { | |
2784 | register int rtnval; | |
2785 | ||
2786 | while ((rtnval = close (fd)) == -1 | |
2787 | && (errno == EINTR)); | |
2788 | return rtnval; | |
2789 | } | |
2790 | ||
2791 | #endif /* INTERRUPTIBLE_CLOSE */ | |
2792 | ||
2793 | #ifdef INTERRUPTIBLE_IO | |
2794 | ||
2795 | int | |
2796 | sys_read (fildes, buf, nbyte) | |
2797 | int fildes; | |
2798 | char *buf; | |
2799 | unsigned int nbyte; | |
2800 | { | |
2801 | register int rtnval; | |
2802 | ||
2803 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
2804 | && (errno == EINTR)); | |
2805 | return (rtnval); | |
2806 | } | |
2807 | ||
2808 | int | |
2809 | sys_write (fildes, buf, nbyte) | |
2810 | int fildes; | |
2811 | char *buf; | |
2812 | unsigned int nbyte; | |
2813 | { | |
b95520f5 | 2814 | register int rtnval, bytes_written; |
86a5659e | 2815 | |
b95520f5 BF |
2816 | bytes_written = 0; |
2817 | ||
2818 | while (nbyte > 0) | |
2819 | { | |
2820 | rtnval = write (fildes, buf, nbyte); | |
2821 | ||
2822 | if (rtnval == -1) | |
2823 | { | |
2824 | if (errno == EINTR) | |
2825 | continue; | |
2826 | else | |
aa670904 | 2827 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
2828 | } |
2829 | ||
2830 | buf += rtnval; | |
2831 | nbyte -= rtnval; | |
2832 | bytes_written += rtnval; | |
2833 | } | |
2834 | return (bytes_written); | |
86a5659e JB |
2835 | } |
2836 | ||
2837 | #endif /* INTERRUPTIBLE_IO */ | |
2838 | \f | |
0e18d8ef RS |
2839 | #ifndef HAVE_VFORK |
2840 | ||
2841 | /* | |
2842 | * Substitute fork for vfork on USG flavors. | |
2843 | */ | |
2844 | ||
2845 | vfork () | |
2846 | { | |
2847 | return (fork ()); | |
2848 | } | |
2849 | ||
2850 | #endif /* not HAVE_VFORK */ | |
2851 | \f | |
86a5659e JB |
2852 | #ifdef USG |
2853 | /* | |
2854 | * All of the following are for USG. | |
2855 | * | |
2856 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2857 | * that the user program has elected to catch. Thus the system call | |
2858 | * must be retried in these cases. To handle this without massive | |
2859 | * changes in the source code, we remap the standard system call names | |
2860 | * to names for our own functions in sysdep.c that do the system call | |
2861 | * with retries. Actually, for portability reasons, it is good | |
2862 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2863 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2864 | * adds an extra level of function call overhead but it is almost |
2865 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2866 | */ | |
2867 | ||
00eaaa32 | 2868 | #ifndef HAVE_SYS_SIGLIST |
86a5659e JB |
2869 | char *sys_siglist[NSIG + 1] = |
2870 | { | |
2871 | #ifdef AIX | |
2872 | /* AIX has changed the signals a bit */ | |
2873 | "bogus signal", /* 0 */ | |
2874 | "hangup", /* 1 SIGHUP */ | |
2875 | "interrupt", /* 2 SIGINT */ | |
2876 | "quit", /* 3 SIGQUIT */ | |
2877 | "illegal instruction", /* 4 SIGILL */ | |
2878 | "trace trap", /* 5 SIGTRAP */ | |
2879 | "IOT instruction", /* 6 SIGIOT */ | |
2880 | "crash likely", /* 7 SIGDANGER */ | |
2881 | "floating point exception", /* 8 SIGFPE */ | |
2882 | "kill", /* 9 SIGKILL */ | |
2883 | "bus error", /* 10 SIGBUS */ | |
2884 | "segmentation violation", /* 11 SIGSEGV */ | |
2885 | "bad argument to system call", /* 12 SIGSYS */ | |
2886 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2887 | "alarm clock", /* 14 SIGALRM */ | |
2888 | "software termination signum", /* 15 SIGTERM */ | |
2889 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2890 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2891 | "death of a child", /* 18 SIGCLD */ | |
2892 | "power-fail restart", /* 19 SIGPWR */ | |
2893 | "bogus signal", /* 20 */ | |
2894 | "bogus signal", /* 21 */ | |
2895 | "bogus signal", /* 22 */ | |
2896 | "bogus signal", /* 23 */ | |
2897 | "bogus signal", /* 24 */ | |
2898 | "LAN I/O interrupt", /* 25 SIGAIO */ | |
2899 | "PTY I/O interrupt", /* 26 SIGPTY */ | |
2900 | "I/O intervention required", /* 27 SIGIOINT */ | |
2901 | "HFT grant", /* 28 SIGGRANT */ | |
2902 | "HFT retract", /* 29 SIGRETRACT */ | |
2903 | "HFT sound done", /* 30 SIGSOUND */ | |
2904 | "HFT input ready", /* 31 SIGMSG */ | |
2905 | #else /* not AIX */ | |
2906 | "bogus signal", /* 0 */ | |
2907 | "hangup", /* 1 SIGHUP */ | |
2908 | "interrupt", /* 2 SIGINT */ | |
2909 | "quit", /* 3 SIGQUIT */ | |
2910 | "illegal instruction", /* 4 SIGILL */ | |
2911 | "trace trap", /* 5 SIGTRAP */ | |
2912 | "IOT instruction", /* 6 SIGIOT */ | |
2913 | "EMT instruction", /* 7 SIGEMT */ | |
2914 | "floating point exception", /* 8 SIGFPE */ | |
2915 | "kill", /* 9 SIGKILL */ | |
2916 | "bus error", /* 10 SIGBUS */ | |
2917 | "segmentation violation", /* 11 SIGSEGV */ | |
2918 | "bad argument to system call", /* 12 SIGSYS */ | |
2919 | "write on a pipe with no one to read it", /* 13 SIGPIPE */ | |
2920 | "alarm clock", /* 14 SIGALRM */ | |
2921 | "software termination signum", /* 15 SIGTERM */ | |
2922 | "user defined signal 1", /* 16 SIGUSR1 */ | |
2923 | "user defined signal 2", /* 17 SIGUSR2 */ | |
2924 | "death of a child", /* 18 SIGCLD */ | |
2925 | "power-fail restart", /* 19 SIGPWR */ | |
0f0ea229 RS |
2926 | #ifdef sun |
2927 | "window size change", /* 20 SIGWINCH */ | |
2928 | "urgent socket condition", /* 21 SIGURG */ | |
2929 | "pollable event occured", /* 22 SIGPOLL */ | |
2930 | "stop (cannot be caught or ignored)", /* 23 SIGSTOP */ | |
2931 | "user stop requested from tty", /* 24 SIGTSTP */ | |
2932 | "stopped process has been continued", /* 25 SIGCONT */ | |
2933 | "background tty read attempted", /* 26 SIGTTIN */ | |
2934 | "background tty write attempted", /* 27 SIGTTOU */ | |
2935 | "virtual timer expired", /* 28 SIGVTALRM */ | |
2936 | "profiling timer expired", /* 29 SIGPROF */ | |
2937 | "exceeded cpu limit", /* 30 SIGXCPU */ | |
2938 | "exceeded file size limit", /* 31 SIGXFSZ */ | |
2939 | "process's lwps are blocked", /* 32 SIGWAITING */ | |
2940 | "special signal used by thread library", /* 33 SIGLWP */ | |
2da0df4d | 2941 | #ifdef SIGFREEZE |
0f0ea229 | 2942 | "Special Signal Used By CPR", /* 34 SIGFREEZE */ |
2da0df4d RS |
2943 | #endif |
2944 | #ifdef SIGTHAW | |
0f0ea229 | 2945 | "Special Signal Used By CPR", /* 35 SIGTHAW */ |
2da0df4d | 2946 | #endif |
0f0ea229 | 2947 | #endif /* sun */ |
86a5659e JB |
2948 | #endif /* not AIX */ |
2949 | 0 | |
2950 | }; | |
70080de1 | 2951 | #endif /* HAVE_SYS_SIGLIST */ |
86a5659e JB |
2952 | |
2953 | /* | |
2954 | * Warning, this function may not duplicate 4.2 action properly | |
2955 | * under error conditions. | |
2956 | */ | |
2957 | ||
2958 | #ifndef MAXPATHLEN | |
2959 | /* In 4.1, param.h fails to define this. */ | |
2960 | #define MAXPATHLEN 1024 | |
2961 | #endif | |
2962 | ||
2963 | #ifndef HAVE_GETWD | |
2964 | ||
2965 | char * | |
2966 | getwd (pathname) | |
2967 | char *pathname; | |
2968 | { | |
2969 | char *npath, *spath; | |
2970 | extern char *getcwd (); | |
2971 | ||
9ac0d9e0 | 2972 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 2973 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd RS |
2974 | if (spath == 0) |
2975 | return spath; | |
86a5659e JB |
2976 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
2977 | up to first slash. Should be harmless on other systems. */ | |
2978 | while (*npath && *npath != '/') | |
2979 | npath++; | |
2980 | strcpy (pathname, npath); | |
2981 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2982 | UNBLOCK_INPUT; |
86a5659e JB |
2983 | return pathname; |
2984 | } | |
2985 | ||
2986 | #endif /* HAVE_GETWD */ | |
2987 | ||
2988 | /* | |
2989 | * Emulate rename using unlink/link. Note that this is | |
2990 | * only partially correct. Also, doesn't enforce restriction | |
2991 | * that files be of same type (regular->regular, dir->dir, etc). | |
2992 | */ | |
2993 | ||
4746118a JB |
2994 | #ifndef HAVE_RENAME |
2995 | ||
86a5659e | 2996 | rename (from, to) |
19c7afdf JB |
2997 | const char *from; |
2998 | const char *to; | |
86a5659e JB |
2999 | { |
3000 | if (access (from, 0) == 0) | |
3001 | { | |
3002 | unlink (to); | |
3003 | if (link (from, to) == 0) | |
3004 | if (unlink (from) == 0) | |
3005 | return (0); | |
3006 | } | |
3007 | return (-1); | |
3008 | } | |
3009 | ||
4746118a JB |
3010 | #endif |
3011 | ||
86a5659e JB |
3012 | #ifdef MISSING_UTIMES |
3013 | ||
3014 | /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */ | |
3015 | ||
3016 | utimes () | |
3017 | { | |
3018 | } | |
3019 | #endif | |
3020 | ||
3021 | #ifdef IRIS_UTIME | |
3022 | ||
3023 | /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the | |
3024 | utimbuf structure defined anywhere but in the man page. */ | |
3025 | ||
3026 | struct utimbuf | |
3027 | { | |
3028 | long actime; | |
3029 | long modtime; | |
3030 | }; | |
3031 | ||
3032 | utimes (name, tvp) | |
3033 | char *name; | |
3034 | struct timeval tvp[]; | |
3035 | { | |
3036 | struct utimbuf utb; | |
3037 | utb.actime = tvp[0].tv_sec; | |
3038 | utb.modtime = tvp[1].tv_sec; | |
3039 | utime (name, &utb); | |
3040 | } | |
3041 | #endif /* IRIS_UTIME */ | |
3042 | ||
3043 | ||
3044 | #ifdef HPUX | |
3045 | #ifndef HAVE_PERROR | |
3046 | ||
3047 | /* HPUX curses library references perror, but as far as we know | |
3048 | it won't be called. Anyway this definition will do for now. */ | |
3049 | ||
3050 | perror () | |
3051 | { | |
3052 | } | |
3053 | ||
3054 | #endif /* not HAVE_PERROR */ | |
3055 | #endif /* HPUX */ | |
3056 | ||
3057 | #ifndef HAVE_DUP2 | |
3058 | ||
3059 | /* | |
3060 | * Emulate BSD dup2. First close newd if it already exists. | |
3061 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
3062 | * until we are, then close the unsuccessful ones. | |
3063 | */ | |
3064 | ||
3065 | dup2 (oldd, newd) | |
3066 | int oldd; | |
3067 | int newd; | |
3068 | { | |
3069 | register int fd, ret; | |
3070 | ||
3071 | sys_close (newd); | |
3072 | ||
3073 | #ifdef F_DUPFD | |
3074 | fd = fcntl (oldd, F_DUPFD, newd); | |
3075 | if (fd != newd) | |
7088d1ca | 3076 | error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno)); |
86a5659e JB |
3077 | #else |
3078 | fd = dup (old); | |
3079 | if (fd == -1) | |
3080 | return -1; | |
3081 | if (fd == new) | |
3082 | return new; | |
3083 | ret = dup2 (old,new); | |
3084 | sys_close (fd); | |
3085 | return ret; | |
3086 | #endif | |
3087 | } | |
3088 | ||
3089 | #endif /* not HAVE_DUP2 */ | |
3090 | ||
3091 | /* | |
3092 | * Gettimeofday. Simulate as much as possible. Only accurate | |
3093 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
3094 | * Only needed when subprocesses are defined. | |
3095 | */ | |
3096 | ||
3097 | #ifdef subprocesses | |
3098 | #ifndef VMS | |
3099 | #ifndef HAVE_GETTIMEOFDAY | |
3100 | #ifdef HAVE_TIMEVAL | |
3101 | ||
3102 | /* ARGSUSED */ | |
3103 | gettimeofday (tp, tzp) | |
3104 | struct timeval *tp; | |
3105 | struct timezone *tzp; | |
3106 | { | |
3107 | extern long time (); | |
3108 | ||
3109 | tp->tv_sec = time ((long *)0); | |
3110 | tp->tv_usec = 0; | |
4ca7594f RS |
3111 | if (tzp != 0) |
3112 | tzp->tz_minuteswest = -1; | |
86a5659e JB |
3113 | } |
3114 | ||
3115 | #endif | |
3116 | #endif | |
3117 | #endif | |
3118 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ | |
3119 | ||
3120 | /* | |
3121 | * This function will go away as soon as all the stubs fixed. (fnf) | |
3122 | */ | |
3123 | ||
3124 | croak (badfunc) | |
3125 | char *badfunc; | |
3126 | { | |
3127 | printf ("%s not yet implemented\r\n", badfunc); | |
3128 | reset_sys_modes (); | |
3129 | exit (1); | |
3130 | } | |
3131 | ||
3132 | #endif /* USG */ | |
3133 | \f | |
3134 | #ifdef DGUX | |
3135 | ||
3136 | char *sys_siglist[NSIG + 1] = | |
3137 | { | |
3138 | "null signal", /* 0 SIGNULL */ | |
3139 | "hangup", /* 1 SIGHUP */ | |
3140 | "interrupt", /* 2 SIGINT */ | |
3141 | "quit", /* 3 SIGQUIT */ | |
3142 | "illegal instruction", /* 4 SIGILL */ | |
3143 | "trace trap", /* 5 SIGTRAP */ | |
3144 | "abort termination", /* 6 SIGABRT */ | |
3145 | "SIGEMT", /* 7 SIGEMT */ | |
3146 | "floating point exception", /* 8 SIGFPE */ | |
3147 | "kill", /* 9 SIGKILL */ | |
3148 | "bus error", /* 10 SIGBUS */ | |
3149 | "segmentation violation", /* 11 SIGSEGV */ | |
3150 | "bad argument to system call", /* 12 SIGSYS */ | |
3151 | "write on a pipe with no reader", /* 13 SIGPIPE */ | |
3152 | "alarm clock", /* 14 SIGALRM */ | |
3153 | "software termination signal", /* 15 SIGTERM */ | |
3154 | "user defined signal 1", /* 16 SIGUSR1 */ | |
3155 | "user defined signal 2", /* 17 SIGUSR2 */ | |
3156 | "child stopped or terminated", /* 18 SIGCLD */ | |
3157 | "power-fail restart", /* 19 SIGPWR */ | |
3158 | "window size changed", /* 20 SIGWINCH */ | |
3159 | "undefined", /* 21 */ | |
eb8c3be9 | 3160 | "pollable event occurred", /* 22 SIGPOLL */ |
86a5659e JB |
3161 | "sendable stop signal not from tty", /* 23 SIGSTOP */ |
3162 | "stop signal from tty", /* 24 SIGSTP */ | |
3163 | "continue a stopped process", /* 25 SIGCONT */ | |
3164 | "attempted background tty read", /* 26 SIGTTIN */ | |
3165 | "attempted background tty write", /* 27 SIGTTOU */ | |
3166 | "undefined", /* 28 */ | |
3167 | "undefined", /* 29 */ | |
3168 | "undefined", /* 30 */ | |
3169 | "undefined", /* 31 */ | |
3170 | "undefined", /* 32 */ | |
3171 | "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */ | |
3172 | "I/O is possible", /* 34 SIGIO */ | |
3173 | "exceeded cpu time limit", /* 35 SIGXCPU */ | |
3174 | "exceeded file size limit", /* 36 SIGXFSZ */ | |
3175 | "virtual time alarm", /* 37 SIGVTALRM */ | |
3176 | "profiling time alarm", /* 38 SIGPROF */ | |
3177 | "undefined", /* 39 */ | |
3178 | "file record locks revoked", /* 40 SIGLOST */ | |
3179 | "undefined", /* 41 */ | |
3180 | "undefined", /* 42 */ | |
3181 | "undefined", /* 43 */ | |
3182 | "undefined", /* 44 */ | |
3183 | "undefined", /* 45 */ | |
3184 | "undefined", /* 46 */ | |
3185 | "undefined", /* 47 */ | |
3186 | "undefined", /* 48 */ | |
3187 | "undefined", /* 49 */ | |
3188 | "undefined", /* 50 */ | |
3189 | "undefined", /* 51 */ | |
3190 | "undefined", /* 52 */ | |
3191 | "undefined", /* 53 */ | |
3192 | "undefined", /* 54 */ | |
3193 | "undefined", /* 55 */ | |
3194 | "undefined", /* 56 */ | |
3195 | "undefined", /* 57 */ | |
3196 | "undefined", /* 58 */ | |
3197 | "undefined", /* 59 */ | |
3198 | "undefined", /* 60 */ | |
3199 | "undefined", /* 61 */ | |
3200 | "undefined", /* 62 */ | |
3201 | "undefined", /* 63 */ | |
3202 | "notification message in mess. queue", /* 64 SIGDGNOTIFY */ | |
3203 | 0 | |
3204 | }; | |
3205 | ||
3206 | #endif /* DGUX */ | |
3207 | \f | |
3208 | /* Directory routines for systems that don't have them. */ | |
3209 | ||
3210 | #ifdef SYSV_SYSTEM_DIR | |
3211 | ||
3212 | #include <dirent.h> | |
3213 | ||
1db6401c | 3214 | #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR) |
cfdc57af | 3215 | |
86a5659e JB |
3216 | int |
3217 | closedir (dirp) | |
3218 | register DIR *dirp; /* stream from opendir */ | |
3219 | { | |
cfdc57af RS |
3220 | int rtnval; |
3221 | ||
3222 | rtnval = sys_close (dirp->dd_fd); | |
1b929d25 | 3223 | |
65aa44ac JB |
3224 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
3225 | in one block. Why in the world are we freeing this ourselves | |
3226 | anyway? */ | |
3227 | #if ! (defined (sun) && defined (USG5_4)) | |
3228 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ | |
3229 | #endif | |
9ac0d9e0 | 3230 | xfree ((char *) dirp); |
cfdc57af RS |
3231 | |
3232 | return rtnval; | |
86a5659e | 3233 | } |
1db6401c | 3234 | #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ |
86a5659e JB |
3235 | #endif /* SYSV_SYSTEM_DIR */ |
3236 | ||
3237 | #ifdef NONSYSTEM_DIR_LIBRARY | |
3238 | ||
3239 | DIR * | |
3240 | opendir (filename) | |
3241 | char *filename; /* name of directory */ | |
3242 | { | |
3243 | register DIR *dirp; /* -> malloc'ed storage */ | |
3244 | register int fd; /* file descriptor for read */ | |
3245 | struct stat sbuf; /* result of fstat */ | |
3246 | ||
3247 | fd = sys_open (filename, 0); | |
3248 | if (fd < 0) | |
3249 | return 0; | |
3250 | ||
9ac0d9e0 | 3251 | BLOCK_INPUT; |
86a5659e JB |
3252 | if (fstat (fd, &sbuf) < 0 |
3253 | || (sbuf.st_mode & S_IFMT) != S_IFDIR | |
3254 | || (dirp = (DIR *) malloc (sizeof (DIR))) == 0) | |
3255 | { | |
3256 | sys_close (fd); | |
9ac0d9e0 | 3257 | UNBLOCK_INPUT; |
86a5659e JB |
3258 | return 0; /* bad luck today */ |
3259 | } | |
9ac0d9e0 | 3260 | UNBLOCK_INPUT; |
86a5659e JB |
3261 | |
3262 | dirp->dd_fd = fd; | |
3263 | dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ | |
3264 | ||
3265 | return dirp; | |
3266 | } | |
3267 | ||
3268 | void | |
3269 | closedir (dirp) | |
3270 | register DIR *dirp; /* stream from opendir */ | |
3271 | { | |
3272 | sys_close (dirp->dd_fd); | |
9ac0d9e0 | 3273 | xfree ((char *) dirp); |
86a5659e JB |
3274 | } |
3275 | ||
3276 | ||
3277 | #ifndef VMS | |
3278 | #define DIRSIZ 14 | |
3279 | struct olddir | |
3280 | { | |
3281 | ino_t od_ino; /* inode */ | |
3282 | char od_name[DIRSIZ]; /* filename */ | |
3283 | }; | |
3284 | #endif /* not VMS */ | |
3285 | ||
3286 | struct direct dir_static; /* simulated directory contents */ | |
3287 | ||
3288 | /* ARGUSED */ | |
3289 | struct direct * | |
3290 | readdir (dirp) | |
3291 | register DIR *dirp; /* stream from opendir */ | |
3292 | { | |
3293 | #ifndef VMS | |
3294 | register struct olddir *dp; /* -> directory data */ | |
3295 | #else /* VMS */ | |
3296 | register struct dir$_name *dp; /* -> directory data */ | |
3297 | register struct dir$_version *dv; /* -> version data */ | |
3298 | #endif /* VMS */ | |
3299 | ||
3300 | for (; ;) | |
3301 | { | |
3302 | if (dirp->dd_loc >= dirp->dd_size) | |
3303 | dirp->dd_loc = dirp->dd_size = 0; | |
3304 | ||
3305 | if (dirp->dd_size == 0 /* refill buffer */ | |
3306 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3307 | return 0; | |
3308 | ||
3309 | #ifndef VMS | |
3310 | dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; | |
3311 | dirp->dd_loc += sizeof (struct olddir); | |
3312 | ||
3313 | if (dp->od_ino != 0) /* not deleted entry */ | |
3314 | { | |
3315 | dir_static.d_ino = dp->od_ino; | |
3316 | strncpy (dir_static.d_name, dp->od_name, DIRSIZ); | |
3317 | dir_static.d_name[DIRSIZ] = '\0'; | |
3318 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3319 | dir_static.d_reclen = sizeof (struct direct) | |
3320 | - MAXNAMLEN + 3 | |
3321 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3322 | return &dir_static; /* -> simulated structure */ | |
3323 | } | |
3324 | #else /* VMS */ | |
3325 | dp = (struct dir$_name *) dirp->dd_buf; | |
3326 | if (dirp->dd_loc == 0) | |
3327 | dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 | |
3328 | : dp->dir$b_namecount; | |
3329 | dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; | |
3330 | dir_static.d_ino = dv->dir$w_fid_num; | |
3331 | dir_static.d_namlen = dp->dir$b_namecount; | |
3332 | dir_static.d_reclen = sizeof (struct direct) | |
3333 | - MAXNAMLEN + 3 | |
3334 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3335 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3336 | dir_static.d_name[dir_static.d_namlen] = '\0'; | |
3337 | dirp->dd_loc = dirp->dd_size; /* only one record at a time */ | |
3338 | return &dir_static; | |
3339 | #endif /* VMS */ | |
3340 | } | |
3341 | } | |
3342 | ||
3343 | #ifdef VMS | |
3344 | /* readdirver is just like readdir except it returns all versions of a file | |
3345 | as separate entries. */ | |
3346 | ||
3347 | /* ARGUSED */ | |
3348 | struct direct * | |
3349 | readdirver (dirp) | |
3350 | register DIR *dirp; /* stream from opendir */ | |
3351 | { | |
3352 | register struct dir$_name *dp; /* -> directory data */ | |
3353 | register struct dir$_version *dv; /* -> version data */ | |
3354 | ||
3355 | if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) | |
3356 | dirp->dd_loc = dirp->dd_size = 0; | |
3357 | ||
3358 | if (dirp->dd_size == 0 /* refill buffer */ | |
3359 | && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) | |
3360 | return 0; | |
3361 | ||
3362 | dp = (struct dir$_name *) dirp->dd_buf; | |
3363 | if (dirp->dd_loc == 0) | |
3364 | dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 | |
3365 | : dp->dir$b_namecount; | |
3366 | dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; | |
3367 | strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); | |
3368 | sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); | |
3369 | dir_static.d_namlen = strlen (dir_static.d_name); | |
3370 | dir_static.d_ino = dv->dir$w_fid_num; | |
3371 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 | |
3372 | + dir_static.d_namlen - dir_static.d_namlen % 4; | |
3373 | dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); | |
3374 | return &dir_static; | |
3375 | } | |
3376 | ||
3377 | #endif /* VMS */ | |
3378 | ||
3379 | #endif /* NONSYSTEM_DIR_LIBRARY */ | |
23524fb9 JB |
3380 | |
3381 | \f | |
3382 | /* mkdir and rmdir functions, for systems which don't have them. */ | |
3383 | ||
3384 | #ifndef HAVE_MKDIR | |
3385 | /* | |
3386 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
3387 | * | |
3388 | * If you want it, it's yours. All I ask in return is that if you | |
3389 | * figure out how to do this in a Bourne Shell script you send me | |
3390 | * a copy. | |
3391 | * sdcsvax!rmr or rmr@uscd | |
3392 | * | |
3393 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
3394 | * subroutine. 11Mar86; hoptoad!gnu | |
3395 | * | |
3396 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
3397 | * subroutine didn't return EEXIST. It does now. | |
3398 | */ | |
3399 | ||
3400 | /* | |
3401 | * Make a directory. | |
3402 | */ | |
f3892946 RS |
3403 | #ifdef MKDIR_PROTOTYPE |
3404 | MKDIR_PROTOTYPE | |
3405 | #else | |
23524fb9 JB |
3406 | int |
3407 | mkdir (dpath, dmode) | |
3408 | char *dpath; | |
3409 | int dmode; | |
f3892946 | 3410 | #endif |
23524fb9 | 3411 | { |
039f26a4 | 3412 | int cpid, status, fd; |
23524fb9 JB |
3413 | struct stat statbuf; |
3414 | ||
3415 | if (stat (dpath, &statbuf) == 0) | |
3416 | { | |
3417 | errno = EEXIST; /* Stat worked, so it already exists */ | |
3418 | return -1; | |
3419 | } | |
3420 | ||
3421 | /* If stat fails for a reason other than non-existence, return error */ | |
3422 | if (errno != ENOENT) | |
3423 | return -1; | |
3424 | ||
039f26a4 | 3425 | synch_process_alive = 1; |
23524fb9 JB |
3426 | switch (cpid = fork ()) |
3427 | { | |
3428 | ||
039f26a4 | 3429 | case -1: /* Error in fork */ |
23524fb9 JB |
3430 | return (-1); /* Errno is set already */ |
3431 | ||
3432 | case 0: /* Child process */ | |
3433 | /* | |
3434 | * Cheap hack to set mode of new directory. Since this | |
3435 | * child process is going away anyway, we zap its umask. | |
3436 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
3437 | * directory. Does anybody care? | |
3438 | */ | |
3439 | status = umask (0); /* Get current umask */ | |
3440 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
039f26a4 RS |
3441 | fd = sys_open("/dev/null", 2); |
3442 | if (fd >= 0) | |
3443 | { | |
3444 | dup2 (fd, 0); | |
3445 | dup2 (fd, 1); | |
3446 | dup2 (fd, 2); | |
3447 | } | |
23524fb9 JB |
3448 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
3449 | _exit (-1); /* Can't exec /bin/mkdir */ | |
3450 | ||
3451 | default: /* Parent process */ | |
039f26a4 | 3452 | wait_for_termination (cpid); |
23524fb9 JB |
3453 | } |
3454 | ||
039f26a4 | 3455 | if (synch_process_death != 0 || synch_process_retcode != 0) |
23524fb9 JB |
3456 | { |
3457 | errno = EIO; /* We don't know why, but */ | |
3458 | return -1; /* /bin/mkdir failed */ | |
3459 | } | |
3460 | ||
3461 | return 0; | |
3462 | } | |
3463 | #endif /* not HAVE_MKDIR */ | |
3464 | ||
3465 | #ifndef HAVE_RMDIR | |
3466 | int | |
3467 | rmdir (dpath) | |
3468 | char *dpath; | |
3469 | { | |
039f26a4 | 3470 | int cpid, status, fd; |
23524fb9 JB |
3471 | struct stat statbuf; |
3472 | ||
3473 | if (stat (dpath, &statbuf) != 0) | |
3474 | { | |
3475 | /* Stat just set errno. We don't have to */ | |
3476 | return -1; | |
3477 | } | |
3478 | ||
039f26a4 | 3479 | synch_process_alive = 1; |
23524fb9 JB |
3480 | switch (cpid = fork ()) |
3481 | { | |
3482 | ||
039f26a4 | 3483 | case -1: /* Error in fork */ |
23524fb9 JB |
3484 | return (-1); /* Errno is set already */ |
3485 | ||
3486 | case 0: /* Child process */ | |
039f26a4 RS |
3487 | fd = sys_open("/dev/null", 2); |
3488 | if (fd >= 0) | |
3489 | { | |
3490 | dup2 (fd, 0); | |
3491 | dup2 (fd, 1); | |
3492 | dup2 (fd, 2); | |
3493 | } | |
039f26a4 | 3494 | wait_for_termination (cpid); |
207bdbdb RS |
3495 | if (synch_process_death != 0 || synch_process_retcode != 0) |
3496 | return -1; /* /bin/rmdir failed */ | |
3497 | default: /* Parent process */ | |
3498 | while (cpid != wait (&status)); /* Wait for kid to finish */ | |
23524fb9 JB |
3499 | } |
3500 | ||
207bdbdb | 3501 | if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0) |
23524fb9 JB |
3502 | { |
3503 | errno = EIO; /* We don't know why, but */ | |
207bdbdb | 3504 | return -1; /* /bin/mkdir failed */ |
23524fb9 JB |
3505 | } |
3506 | ||
3507 | return 0; | |
3508 | } | |
3509 | #endif /* !HAVE_RMDIR */ | |
3510 | ||
3511 | ||
86a5659e JB |
3512 | \f |
3513 | /* Functions for VMS */ | |
3514 | #ifdef VMS | |
91bac16a | 3515 | #include "vms-pwd.h" |
86a5659e JB |
3516 | #include <acldef.h> |
3517 | #include <chpdef.h> | |
3518 | #include <jpidef.h> | |
3519 | ||
3520 | /* Return as a string the VMS error string pertaining to STATUS. | |
3521 | Reuses the same static buffer each time it is called. */ | |
3522 | ||
3523 | char * | |
3524 | vmserrstr (status) | |
3525 | int status; /* VMS status code */ | |
3526 | { | |
3527 | int bufadr[2]; | |
3528 | short len; | |
3529 | static char buf[257]; | |
3530 | ||
3531 | bufadr[0] = sizeof buf - 1; | |
3532 | bufadr[1] = (int) buf; | |
3533 | if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) | |
3534 | return "untranslatable VMS error status"; | |
3535 | buf[len] = '\0'; | |
3536 | return buf; | |
3537 | } | |
3538 | ||
3539 | #ifdef access | |
3540 | #undef access | |
3541 | ||
3542 | /* The following is necessary because 'access' emulation by VMS C (2.0) does | |
3543 | * not work correctly. (It also doesn't work well in version 2.3.) | |
3544 | */ | |
3545 | ||
3546 | #ifdef VMS4_4 | |
3547 | ||
3548 | #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ | |
3549 | { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } | |
3550 | ||
3551 | typedef union { | |
3552 | struct { | |
3553 | unsigned short s_buflen; | |
3554 | unsigned short s_code; | |
3555 | char *s_bufadr; | |
3556 | unsigned short *s_retlenadr; | |
3557 | } s; | |
3558 | int end; | |
3559 | } item; | |
3560 | #define buflen s.s_buflen | |
3561 | #define code s.s_code | |
3562 | #define bufadr s.s_bufadr | |
3563 | #define retlenadr s.s_retlenadr | |
3564 | ||
3565 | #define R_OK 4 /* test for read permission */ | |
3566 | #define W_OK 2 /* test for write permission */ | |
3567 | #define X_OK 1 /* test for execute (search) permission */ | |
3568 | #define F_OK 0 /* test for presence of file */ | |
3569 | ||
3570 | int | |
3571 | sys_access (path, mode) | |
3572 | char *path; | |
3573 | int mode; | |
3574 | { | |
3575 | static char *user = NULL; | |
3576 | char dir_fn[512]; | |
3577 | ||
3578 | /* translate possible directory spec into .DIR file name, so brain-dead | |
3579 | * access can treat the directory like a file. */ | |
3580 | if (directory_file_name (path, dir_fn)) | |
3581 | path = dir_fn; | |
3582 | ||
3583 | if (mode == F_OK) | |
3584 | return access (path, mode); | |
3585 | if (user == NULL && (user = (char *) getenv ("USER")) == NULL) | |
3586 | return -1; | |
3587 | { | |
3588 | int stat; | |
3589 | int flags; | |
3590 | int acces; | |
3591 | unsigned short int dummy; | |
3592 | item itemlst[3]; | |
3593 | static int constant = ACL$C_FILE; | |
3594 | DESCRIPTOR (path_desc, path); | |
3595 | DESCRIPTOR (user_desc, user); | |
3596 | ||
3597 | flags = 0; | |
3598 | acces = 0; | |
3599 | if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) | |
3600 | return stat; | |
3601 | if (mode & R_OK) | |
3602 | acces |= CHP$M_READ; | |
3603 | if (mode & W_OK) | |
3604 | acces |= CHP$M_WRITE; | |
3605 | itemlst[0].buflen = sizeof (int); | |
3606 | itemlst[0].code = CHP$_FLAGS; | |
3607 | itemlst[0].bufadr = (char *) &flags; | |
3608 | itemlst[0].retlenadr = &dummy; | |
3609 | itemlst[1].buflen = sizeof (int); | |
3610 | itemlst[1].code = CHP$_ACCESS; | |
3611 | itemlst[1].bufadr = (char *) &acces; | |
3612 | itemlst[1].retlenadr = &dummy; | |
3613 | itemlst[2].end = CHP$_END; | |
3614 | stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); | |
3615 | return stat == SS$_NORMAL ? 0 : -1; | |
3616 | } | |
3617 | } | |
3618 | ||
3619 | #else /* not VMS4_4 */ | |
3620 | ||
3621 | #include <prvdef.h> | |
3622 | #define ACE$M_WRITE 2 | |
3623 | #define ACE$C_KEYID 1 | |
3624 | ||
3625 | static unsigned short memid, grpid; | |
3626 | static unsigned int uic; | |
3627 | ||
3628 | /* Called from init_sys_modes, so it happens not very often | |
3629 | but at least each time Emacs is loaded. */ | |
3630 | sys_access_reinit () | |
3631 | { | |
3632 | uic = 0; | |
3633 | } | |
3634 | ||
3635 | int | |
3636 | sys_access (filename, type) | |
3637 | char * filename; | |
3638 | int type; | |
3639 | { | |
3640 | struct FAB fab; | |
3641 | struct XABPRO xab; | |
3642 | int status, size, i, typecode, acl_controlled; | |
3643 | unsigned int *aclptr, *aclend, aclbuf[60]; | |
3644 | union prvdef prvmask; | |
3645 | ||
3646 | /* Get UIC and GRP values for protection checking. */ | |
3647 | if (uic == 0) | |
3648 | { | |
3649 | status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); | |
3650 | if (! (status & 1)) | |
3651 | return -1; | |
3652 | memid = uic & 0xFFFF; | |
3653 | grpid = uic >> 16; | |
3654 | } | |
3655 | ||
3656 | if (type != 2) /* not checking write access */ | |
3657 | return access (filename, type); | |
3658 | ||
3659 | /* Check write protection. */ | |
3660 | ||
3661 | #define CHECKPRIV(bit) (prvmask.bit) | |
3662 | #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) | |
3663 | ||
3664 | /* Find privilege bits */ | |
986ffb24 | 3665 | status = SYS$SETPRV (0, 0, 0, prvmask); |
86a5659e JB |
3666 | if (! (status & 1)) |
3667 | error ("Unable to find privileges: %s", vmserrstr (status)); | |
3668 | if (CHECKPRIV (PRV$V_BYPASS)) | |
3669 | return 0; /* BYPASS enabled */ | |
3670 | fab = cc$rms_fab; | |
3671 | fab.fab$b_fac = FAB$M_GET; | |
3672 | fab.fab$l_fna = filename; | |
3673 | fab.fab$b_fns = strlen (filename); | |
3674 | fab.fab$l_xab = &xab; | |
3675 | xab = cc$rms_xabpro; | |
3676 | xab.xab$l_aclbuf = aclbuf; | |
3677 | xab.xab$w_aclsiz = sizeof (aclbuf); | |
986ffb24 | 3678 | status = SYS$OPEN (&fab, 0, 0); |
86a5659e JB |
3679 | if (! (status & 1)) |
3680 | return -1; | |
986ffb24 | 3681 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
3682 | /* Check system access */ |
3683 | if (CHECKPRIV (PRV$V_SYSPRV) && WRITEABLE (XAB$V_SYS)) | |
3684 | return 0; | |
3685 | /* Check ACL entries, if any */ | |
3686 | acl_controlled = 0; | |
3687 | if (xab.xab$w_acllen > 0) | |
3688 | { | |
3689 | aclptr = aclbuf; | |
3690 | aclend = &aclbuf[xab.xab$w_acllen / 4]; | |
3691 | while (*aclptr && aclptr < aclend) | |
3692 | { | |
3693 | size = (*aclptr & 0xff) / 4; | |
3694 | typecode = (*aclptr >> 8) & 0xff; | |
3695 | if (typecode == ACE$C_KEYID) | |
3696 | for (i = size - 1; i > 1; i--) | |
3697 | if (aclptr[i] == uic) | |
3698 | { | |
3699 | acl_controlled = 1; | |
3700 | if (aclptr[1] & ACE$M_WRITE) | |
3701 | return 0; /* Write access through ACL */ | |
3702 | } | |
3703 | aclptr = &aclptr[size]; | |
3704 | } | |
3705 | if (acl_controlled) /* ACL specified, prohibits write access */ | |
3706 | return -1; | |
3707 | } | |
3708 | /* No ACL entries specified, check normal protection */ | |
3709 | if (WRITEABLE (XAB$V_WLD)) /* World writeable */ | |
3710 | return 0; | |
3711 | if (WRITEABLE (XAB$V_GRP) && | |
3712 | (unsigned short) (xab.xab$l_uic >> 16) == grpid) | |
3713 | return 0; /* Group writeable */ | |
3714 | if (WRITEABLE (XAB$V_OWN) && | |
3715 | (xab.xab$l_uic & 0xFFFF) == memid) | |
3716 | return 0; /* Owner writeable */ | |
3717 | ||
3718 | return -1; /* Not writeable */ | |
3719 | } | |
3720 | #endif /* not VMS4_4 */ | |
3721 | #endif /* access */ | |
3722 | ||
3723 | static char vtbuf[NAM$C_MAXRSS+1]; | |
3724 | ||
3725 | /* translate a vms file spec to a unix path */ | |
3726 | char * | |
3727 | sys_translate_vms (vfile) | |
3728 | char * vfile; | |
3729 | { | |
3730 | char * p; | |
3731 | char * targ; | |
3732 | ||
3733 | if (!vfile) | |
3734 | return 0; | |
3735 | ||
3736 | targ = vtbuf; | |
3737 | ||
3738 | /* leading device or logical name is a root directory */ | |
3739 | if (p = strchr (vfile, ':')) | |
3740 | { | |
3741 | *targ++ = '/'; | |
3742 | while (vfile < p) | |
3743 | *targ++ = *vfile++; | |
3744 | vfile++; | |
3745 | *targ++ = '/'; | |
3746 | } | |
3747 | p = vfile; | |
3748 | if (*p == '[' || *p == '<') | |
3749 | { | |
3750 | while (*++vfile != *p + 2) | |
3751 | switch (*vfile) | |
3752 | { | |
3753 | case '.': | |
3754 | if (vfile[-1] == *p) | |
3755 | *targ++ = '.'; | |
3756 | *targ++ = '/'; | |
3757 | break; | |
3758 | ||
3759 | case '-': | |
3760 | *targ++ = '.'; | |
3761 | *targ++ = '.'; | |
3762 | break; | |
3763 | ||
3764 | default: | |
3765 | *targ++ = *vfile; | |
3766 | break; | |
3767 | } | |
3768 | vfile++; | |
3769 | *targ++ = '/'; | |
3770 | } | |
3771 | while (*vfile) | |
3772 | *targ++ = *vfile++; | |
3773 | ||
3774 | return vtbuf; | |
3775 | } | |
3776 | ||
3777 | static char utbuf[NAM$C_MAXRSS+1]; | |
3778 | ||
3779 | /* translate a unix path to a VMS file spec */ | |
3780 | char * | |
3781 | sys_translate_unix (ufile) | |
3782 | char * ufile; | |
3783 | { | |
3784 | int slash_seen = 0; | |
3785 | char *p; | |
3786 | char * targ; | |
3787 | ||
3788 | if (!ufile) | |
3789 | return 0; | |
3790 | ||
3791 | targ = utbuf; | |
3792 | ||
3793 | if (*ufile == '/') | |
3794 | { | |
3795 | ufile++; | |
3796 | } | |
3797 | ||
3798 | while (*ufile) | |
3799 | { | |
3800 | switch (*ufile) | |
3801 | { | |
3802 | case '/': | |
3803 | if (slash_seen) | |
3804 | if (index (&ufile[1], '/')) | |
3805 | *targ++ = '.'; | |
3806 | else | |
3807 | *targ++ = ']'; | |
3808 | else | |
3809 | { | |
3810 | *targ++ = ':'; | |
3811 | if (index (&ufile[1], '/')) | |
3812 | *targ++ = '['; | |
3813 | slash_seen = 1; | |
3814 | } | |
3815 | break; | |
3816 | ||
3817 | case '.': | |
3818 | if (strncmp (ufile, "./", 2) == 0) | |
3819 | { | |
3820 | if (!slash_seen) | |
3821 | { | |
3822 | *targ++ = '['; | |
3823 | slash_seen = 1; | |
3824 | } | |
3825 | ufile++; /* skip the dot */ | |
3826 | if (index (&ufile[1], '/')) | |
3827 | *targ++ = '.'; | |
3828 | else | |
3829 | *targ++ = ']'; | |
3830 | } | |
3831 | else if (strncmp (ufile, "../", 3) == 0) | |
3832 | { | |
3833 | if (!slash_seen) | |
3834 | { | |
3835 | *targ++ = '['; | |
3836 | slash_seen = 1; | |
3837 | } | |
3838 | *targ++ = '-'; | |
3839 | ufile += 2; /* skip the dots */ | |
3840 | if (index (&ufile[1], '/')) | |
3841 | *targ++ = '.'; | |
3842 | else | |
3843 | *targ++ = ']'; | |
3844 | } | |
3845 | else | |
3846 | *targ++ = *ufile; | |
3847 | break; | |
3848 | ||
3849 | default: | |
3850 | *targ++ = *ufile; | |
3851 | break; | |
3852 | } | |
3853 | ufile++; | |
3854 | } | |
3855 | *targ = '\0'; | |
3856 | ||
3857 | return utbuf; | |
3858 | } | |
3859 | ||
3860 | char * | |
3861 | getwd (pathname) | |
3862 | char *pathname; | |
3863 | { | |
f4a7e5bd | 3864 | char *ptr, *val; |
210b2b4f | 3865 | extern char *getcwd (); |
86a5659e | 3866 | |
210b2b4f JB |
3867 | #define MAXPATHLEN 1024 |
3868 | ||
9ac0d9e0 | 3869 | ptr = xmalloc (MAXPATHLEN); |
f4a7e5bd RS |
3870 | val = getcwd (ptr, MAXPATHLEN); |
3871 | if (val == 0) | |
3872 | { | |
3873 | xfree (ptr); | |
3874 | return val; | |
3875 | } | |
210b2b4f | 3876 | strcpy (pathname, ptr); |
9ac0d9e0 | 3877 | xfree (ptr); |
210b2b4f JB |
3878 | |
3879 | return pathname; | |
86a5659e JB |
3880 | } |
3881 | ||
3882 | getppid () | |
3883 | { | |
3884 | long item_code = JPI$_OWNER; | |
3885 | unsigned long parent_id; | |
3886 | int status; | |
3887 | ||
3888 | if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) | |
3889 | { | |
3890 | errno = EVMSERR; | |
3891 | vaxc$errno = status; | |
3892 | return -1; | |
3893 | } | |
3894 | return parent_id; | |
3895 | } | |
3896 | ||
3897 | #undef getuid | |
3898 | unsigned | |
3899 | sys_getuid () | |
3900 | { | |
3901 | return (getgid () << 16) | getuid (); | |
3902 | } | |
3903 | ||
3904 | int | |
3905 | sys_read (fildes, buf, nbyte) | |
3906 | int fildes; | |
3907 | char *buf; | |
3908 | unsigned int nbyte; | |
3909 | { | |
3910 | return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); | |
3911 | } | |
3912 | ||
3913 | #if 0 | |
3914 | int | |
3915 | sys_write (fildes, buf, nbyte) | |
3916 | int fildes; | |
3917 | char *buf; | |
3918 | unsigned int nbyte; | |
3919 | { | |
3920 | register int nwrote, rtnval = 0; | |
3921 | ||
3922 | while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { | |
3923 | nbyte -= nwrote; | |
3924 | buf += nwrote; | |
3925 | rtnval += nwrote; | |
3926 | } | |
3927 | if (nwrote < 0) | |
3928 | return rtnval ? rtnval : -1; | |
3929 | if ((nwrote = write (fildes, buf, nbyte)) < 0) | |
3930 | return rtnval ? rtnval : -1; | |
3931 | return (rtnval + nwrote); | |
3932 | } | |
3933 | #endif /* 0 */ | |
3934 | ||
3935 | /* | |
3936 | * VAX/VMS VAX C RTL really loses. It insists that records | |
3937 | * end with a newline (carriage return) character, and if they | |
3938 | * don't it adds one (nice of it isn't it!) | |
3939 | * | |
3940 | * Thus we do this stupidity below. | |
3941 | */ | |
3942 | ||
3943 | int | |
3944 | sys_write (fildes, buf, nbytes) | |
3945 | int fildes; | |
3946 | char *buf; | |
3947 | unsigned int nbytes; | |
3948 | { | |
3949 | register char *p; | |
3950 | register char *e; | |
23b0668c JB |
3951 | int sum = 0; |
3952 | struct stat st; | |
3953 | ||
3954 | fstat (fildes, &st); | |
86a5659e | 3955 | p = buf; |
86a5659e JB |
3956 | while (nbytes > 0) |
3957 | { | |
23b0668c JB |
3958 | int len, retval; |
3959 | ||
3960 | /* Handle fixed-length files with carriage control. */ | |
3961 | if (st.st_fab_rfm == FAB$C_FIX | |
3962 | && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) | |
3963 | { | |
3964 | len = st.st_fab_mrs; | |
3965 | retval = write (fildes, p, min (len, nbytes)); | |
3966 | if (retval != len) | |
3967 | return -1; | |
3968 | retval++; /* This skips the implied carriage control */ | |
3969 | } | |
3970 | else | |
3971 | { | |
3972 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3973 | while (*e != '\n' && e > p) e--; | |
3974 | if (p == e) /* Ok.. so here we add a newline... sigh. */ | |
3975 | e = p + min (MAXIOSIZE, nbytes) - 1; | |
3976 | len = e + 1 - p; | |
3977 | retval = write (fildes, p, len); | |
3978 | if (retval != len) | |
3979 | return -1; | |
3980 | } | |
3981 | p += retval; | |
3982 | sum += retval; | |
86a5659e JB |
3983 | nbytes -= retval; |
3984 | } | |
3985 | return sum; | |
3986 | } | |
3987 | ||
3988 | /* Create file NEW copying its attributes from file OLD. If | |
3989 | OLD is 0 or does not exist, create based on the value of | |
3990 | vms_stmlf_recfm. */ | |
3991 | ||
3992 | /* Protection value the file should ultimately have. | |
3993 | Set by create_copy_attrs, and use by rename_sansversions. */ | |
3994 | static unsigned short int fab_final_pro; | |
3995 | ||
3996 | int | |
3997 | creat_copy_attrs (old, new) | |
3998 | char *old, *new; | |
3999 | { | |
4000 | struct FAB fab = cc$rms_fab; | |
4001 | struct XABPRO xabpro; | |
4002 | char aclbuf[256]; /* Choice of size is arbitrary. See below. */ | |
4003 | extern int vms_stmlf_recfm; | |
4004 | ||
4005 | if (old) | |
4006 | { | |
4007 | fab.fab$b_fac = FAB$M_GET; | |
4008 | fab.fab$l_fna = old; | |
4009 | fab.fab$b_fns = strlen (old); | |
4010 | fab.fab$l_xab = (char *) &xabpro; | |
4011 | xabpro = cc$rms_xabpro; | |
4012 | xabpro.xab$l_aclbuf = aclbuf; | |
4013 | xabpro.xab$w_aclsiz = sizeof aclbuf; | |
4014 | /* Call $OPEN to fill in the fab & xabpro fields. */ | |
986ffb24 | 4015 | if (SYS$OPEN (&fab, 0, 0) & 1) |
86a5659e | 4016 | { |
986ffb24 | 4017 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4018 | fab.fab$l_alq = 0; /* zero the allocation quantity */ |
4019 | if (xabpro.xab$w_acllen > 0) | |
4020 | { | |
4021 | if (xabpro.xab$w_acllen > sizeof aclbuf) | |
4022 | /* If the acl buffer was too short, redo open with longer one. | |
4023 | Wouldn't need to do this if there were some system imposed | |
4024 | limit on the size of an ACL, but I can't find any such. */ | |
4025 | { | |
4026 | xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); | |
4027 | xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; | |
986ffb24 JB |
4028 | if (SYS$OPEN (&fab, 0, 0) & 1) |
4029 | SYS$CLOSE (&fab, 0, 0); | |
86a5659e JB |
4030 | else |
4031 | old = 0; | |
4032 | } | |
4033 | } | |
4034 | else | |
4035 | xabpro.xab$l_aclbuf = 0; | |
4036 | } | |
4037 | else | |
4038 | old = 0; | |
4039 | } | |
4040 | fab.fab$l_fna = new; | |
4041 | fab.fab$b_fns = strlen (new); | |
4042 | if (!old) | |
4043 | { | |
4044 | fab.fab$l_xab = 0; | |
4045 | fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; | |
4046 | fab.fab$b_rat = FAB$M_CR; | |
4047 | } | |
4048 | ||
4049 | /* Set the file protections such that we will be able to manipulate | |
4050 | this file. Once we are done writing and renaming it, we will set | |
4051 | the protections back. */ | |
4052 | if (old) | |
4053 | fab_final_pro = xabpro.xab$w_pro; | |
4054 | else | |
986ffb24 | 4055 | SYS$SETDFPROT (0, &fab_final_pro); |
86a5659e JB |
4056 | xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ |
4057 | ||
4058 | /* Create the new file with either default attrs or attrs copied | |
4059 | from old file. */ | |
4060 | if (!(SYS$CREATE (&fab, 0, 0) & 1)) | |
4061 | return -1; | |
986ffb24 | 4062 | SYS$CLOSE (&fab, 0, 0); |
86a5659e JB |
4063 | /* As this is a "replacement" for creat, return a file descriptor |
4064 | opened for writing. */ | |
4065 | return open (new, O_WRONLY); | |
4066 | } | |
4067 | ||
4068 | #ifdef creat | |
4069 | #undef creat | |
4070 | #include <varargs.h> | |
4071 | #ifdef __GNUC__ | |
4072 | #ifndef va_count | |
4073 | #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) | |
4074 | #endif | |
4075 | #endif | |
4076 | ||
4077 | sys_creat (va_alist) | |
4078 | va_dcl | |
4079 | { | |
eb8c3be9 | 4080 | va_list list_incrementer; |
86a5659e JB |
4081 | char *name; |
4082 | int mode; | |
4083 | int rfd; /* related file descriptor */ | |
4084 | int fd; /* Our new file descriptor */ | |
4085 | int count; | |
4086 | struct stat st_buf; | |
4087 | char rfm[12]; | |
4088 | char rat[15]; | |
4089 | char mrs[13]; | |
4090 | char fsz[13]; | |
4091 | extern int vms_stmlf_recfm; | |
4092 | ||
4093 | va_count (count); | |
eb8c3be9 JB |
4094 | va_start (list_incrementer); |
4095 | name = va_arg (list_incrementer, char *); | |
4096 | mode = va_arg (list_incrementer, int); | |
86a5659e | 4097 | if (count > 2) |
eb8c3be9 JB |
4098 | rfd = va_arg (list_incrementer, int); |
4099 | va_end (list_incrementer); | |
86a5659e JB |
4100 | if (count > 2) |
4101 | { | |
4102 | /* Use information from the related file descriptor to set record | |
4103 | format of the newly created file. */ | |
4104 | fstat (rfd, &st_buf); | |
4105 | switch (st_buf.st_fab_rfm) | |
4106 | { | |
4107 | case FAB$C_FIX: | |
4108 | strcpy (rfm, "rfm = fix"); | |
4109 | sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); | |
4110 | strcpy (rat, "rat = "); | |
4111 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4112 | strcat (rat, "cr"); | |
4113 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4114 | strcat (rat, "ftn"); | |
4115 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4116 | strcat (rat, "prn"); | |
4117 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4118 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4119 | strcat (rat, ", blk"); | |
4120 | else | |
4121 | strcat (rat, "blk"); | |
4122 | return creat (name, 0, rfm, rat, mrs); | |
4123 | ||
4124 | case FAB$C_VFC: | |
4125 | strcpy (rfm, "rfm = vfc"); | |
4126 | sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); | |
4127 | strcpy (rat, "rat = "); | |
4128 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4129 | strcat (rat, "cr"); | |
4130 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4131 | strcat (rat, "ftn"); | |
4132 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4133 | strcat (rat, "prn"); | |
4134 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4135 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4136 | strcat (rat, ", blk"); | |
4137 | else | |
4138 | strcat (rat, "blk"); | |
4139 | return creat (name, 0, rfm, rat, fsz); | |
4140 | ||
4141 | case FAB$C_STM: | |
4142 | strcpy (rfm, "rfm = stm"); | |
4143 | break; | |
4144 | ||
4145 | case FAB$C_STMCR: | |
4146 | strcpy (rfm, "rfm = stmcr"); | |
4147 | break; | |
4148 | ||
4149 | case FAB$C_STMLF: | |
4150 | strcpy (rfm, "rfm = stmlf"); | |
4151 | break; | |
4152 | ||
4153 | case FAB$C_UDF: | |
4154 | strcpy (rfm, "rfm = udf"); | |
4155 | break; | |
4156 | ||
4157 | case FAB$C_VAR: | |
4158 | strcpy (rfm, "rfm = var"); | |
4159 | break; | |
4160 | } | |
4161 | strcpy (rat, "rat = "); | |
4162 | if (st_buf.st_fab_rat & FAB$M_CR) | |
4163 | strcat (rat, "cr"); | |
4164 | else if (st_buf.st_fab_rat & FAB$M_FTN) | |
4165 | strcat (rat, "ftn"); | |
4166 | else if (st_buf.st_fab_rat & FAB$M_PRN) | |
4167 | strcat (rat, "prn"); | |
4168 | if (st_buf.st_fab_rat & FAB$M_BLK) | |
4169 | if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) | |
4170 | strcat (rat, ", blk"); | |
4171 | else | |
4172 | strcat (rat, "blk"); | |
4173 | } | |
4174 | else | |
4175 | { | |
4176 | strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); | |
4177 | strcpy (rat, "rat=cr"); | |
4178 | } | |
4179 | /* Until the VAX C RTL fixes the many bugs with modes, always use | |
4180 | mode 0 to get the user's default protection. */ | |
4181 | fd = creat (name, 0, rfm, rat); | |
4182 | if (fd < 0 && errno == EEXIST) | |
4183 | { | |
4184 | if (unlink (name) < 0) | |
4185 | report_file_error ("delete", build_string (name)); | |
4186 | fd = creat (name, 0, rfm, rat); | |
4187 | } | |
4188 | return fd; | |
4189 | } | |
4190 | #endif /* creat */ | |
4191 | ||
4192 | /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ | |
4193 | sys_fwrite (ptr, size, num, fp) | |
4194 | register char * ptr; | |
4195 | FILE * fp; | |
4196 | { | |
4197 | register int tot = num * size; | |
4198 | ||
4199 | while (tot--) | |
4200 | fputc (*ptr++, fp); | |
4201 | } | |
4202 | ||
4203 | /* | |
4204 | * The VMS C library routine creat actually creates a new version of an | |
4205 | * existing file rather than truncating the old version. There are times | |
4206 | * when this is not the desired behavior, for instance, when writing an | |
4207 | * auto save file (you only want one version), or when you don't have | |
4208 | * write permission in the directory containing the file (but the file | |
4209 | * itself is writable). Hence this routine, which is equivalent to | |
4210 | * "close (creat (fn, 0));" on Unix if fn already exists. | |
4211 | */ | |
4212 | int | |
4213 | vms_truncate (fn) | |
4214 | char *fn; | |
4215 | { | |
4216 | struct FAB xfab = cc$rms_fab; | |
4217 | struct RAB xrab = cc$rms_rab; | |
4218 | int status; | |
4219 | ||
4220 | xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ | |
4221 | xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ | |
4222 | xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ | |
4223 | xfab.fab$l_fna = fn; | |
4224 | xfab.fab$b_fns = strlen (fn); | |
4225 | xfab.fab$l_dna = ";0"; /* default to latest version of the file */ | |
4226 | xfab.fab$b_dns = 2; | |
4227 | xrab.rab$l_fab = &xfab; | |
4228 | ||
4229 | /* This gibberish opens the file, positions to the first record, and | |
4230 | deletes all records from there until the end of file. */ | |
986ffb24 | 4231 | if ((SYS$OPEN (&xfab) & 01) == 01) |
86a5659e | 4232 | { |
986ffb24 JB |
4233 | if ((SYS$CONNECT (&xrab) & 01) == 01 && |
4234 | (SYS$FIND (&xrab) & 01) == 01 && | |
4235 | (SYS$TRUNCATE (&xrab) & 01) == 01) | |
86a5659e JB |
4236 | status = 0; |
4237 | else | |
4238 | status = -1; | |
4239 | } | |
4240 | else | |
4241 | status = -1; | |
986ffb24 | 4242 | SYS$CLOSE (&xfab); |
86a5659e JB |
4243 | return status; |
4244 | } | |
4245 | ||
4246 | /* Define this symbol to actually read SYSUAF.DAT. This requires either | |
4247 | SYSPRV or a readable SYSUAF.DAT. */ | |
4248 | ||
4249 | #ifdef READ_SYSUAF | |
4250 | /* | |
4251 | * getuaf.c | |
4252 | * | |
4253 | * Routine to read the VMS User Authorization File and return | |
4254 | * a specific user's record. | |
4255 | */ | |
4256 | ||
4257 | static struct UAF retuaf; | |
4258 | ||
4259 | struct UAF * | |
4260 | get_uaf_name (uname) | |
4261 | char * uname; | |
4262 | { | |
4263 | register status; | |
4264 | struct FAB uaf_fab; | |
4265 | struct RAB uaf_rab; | |
4266 | ||
4267 | uaf_fab = cc$rms_fab; | |
4268 | uaf_rab = cc$rms_rab; | |
4269 | /* initialize fab fields */ | |
4270 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4271 | uaf_fab.fab$b_fns = 21; | |
4272 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4273 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4274 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4275 | /* initialize rab fields */ | |
4276 | uaf_rab.rab$l_fab = &uaf_fab; | |
4277 | /* open the User Authorization File */ | |
986ffb24 | 4278 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4279 | if (!(status&1)) |
4280 | { | |
4281 | errno = EVMSERR; | |
4282 | vaxc$errno = status; | |
4283 | return 0; | |
4284 | } | |
986ffb24 | 4285 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4286 | if (!(status&1)) |
4287 | { | |
4288 | errno = EVMSERR; | |
4289 | vaxc$errno = status; | |
4290 | return 0; | |
4291 | } | |
4292 | /* read the requested record - index is in uname */ | |
4293 | uaf_rab.rab$l_kbf = uname; | |
4294 | uaf_rab.rab$b_ksz = strlen (uname); | |
4295 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4296 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4297 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4298 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4299 | if (!(status&1)) |
4300 | { | |
4301 | errno = EVMSERR; | |
4302 | vaxc$errno = status; | |
4303 | return 0; | |
4304 | } | |
4305 | /* close the User Authorization File */ | |
986ffb24 | 4306 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4307 | if (!(status&1)) |
4308 | { | |
4309 | errno = EVMSERR; | |
4310 | vaxc$errno = status; | |
4311 | return 0; | |
4312 | } | |
986ffb24 | 4313 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4314 | if (!(status&1)) |
4315 | { | |
4316 | errno = EVMSERR; | |
4317 | vaxc$errno = status; | |
4318 | return 0; | |
4319 | } | |
4320 | return &retuaf; | |
4321 | } | |
4322 | ||
4323 | struct UAF * | |
4324 | get_uaf_uic (uic) | |
4325 | unsigned long uic; | |
4326 | { | |
4327 | register status; | |
4328 | struct FAB uaf_fab; | |
4329 | struct RAB uaf_rab; | |
4330 | ||
4331 | uaf_fab = cc$rms_fab; | |
4332 | uaf_rab = cc$rms_rab; | |
4333 | /* initialize fab fields */ | |
4334 | uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; | |
4335 | uaf_fab.fab$b_fns = 21; | |
4336 | uaf_fab.fab$b_fac = FAB$M_GET; | |
4337 | uaf_fab.fab$b_org = FAB$C_IDX; | |
4338 | uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; | |
4339 | /* initialize rab fields */ | |
4340 | uaf_rab.rab$l_fab = &uaf_fab; | |
4341 | /* open the User Authorization File */ | |
986ffb24 | 4342 | status = SYS$OPEN (&uaf_fab); |
86a5659e JB |
4343 | if (!(status&1)) |
4344 | { | |
4345 | errno = EVMSERR; | |
4346 | vaxc$errno = status; | |
4347 | return 0; | |
4348 | } | |
986ffb24 | 4349 | status = SYS$CONNECT (&uaf_rab); |
86a5659e JB |
4350 | if (!(status&1)) |
4351 | { | |
4352 | errno = EVMSERR; | |
4353 | vaxc$errno = status; | |
4354 | return 0; | |
4355 | } | |
4356 | /* read the requested record - index is in uic */ | |
4357 | uaf_rab.rab$b_krf = 1; /* 1st alternate key */ | |
4358 | uaf_rab.rab$l_kbf = (char *) &uic; | |
4359 | uaf_rab.rab$b_ksz = sizeof uic; | |
4360 | uaf_rab.rab$b_rac = RAB$C_KEY; | |
4361 | uaf_rab.rab$l_ubf = (char *)&retuaf; | |
4362 | uaf_rab.rab$w_usz = sizeof retuaf; | |
986ffb24 | 4363 | status = SYS$GET (&uaf_rab); |
86a5659e JB |
4364 | if (!(status&1)) |
4365 | { | |
4366 | errno = EVMSERR; | |
4367 | vaxc$errno = status; | |
4368 | return 0; | |
4369 | } | |
4370 | /* close the User Authorization File */ | |
986ffb24 | 4371 | status = SYS$DISCONNECT (&uaf_rab); |
86a5659e JB |
4372 | if (!(status&1)) |
4373 | { | |
4374 | errno = EVMSERR; | |
4375 | vaxc$errno = status; | |
4376 | return 0; | |
4377 | } | |
986ffb24 | 4378 | status = SYS$CLOSE (&uaf_fab); |
86a5659e JB |
4379 | if (!(status&1)) |
4380 | { | |
4381 | errno = EVMSERR; | |
4382 | vaxc$errno = status; | |
4383 | return 0; | |
4384 | } | |
4385 | return &retuaf; | |
4386 | } | |
4387 | ||
4388 | static struct passwd retpw; | |
4389 | ||
4390 | struct passwd * | |
4391 | cnv_uaf_pw (up) | |
4392 | struct UAF * up; | |
4393 | { | |
4394 | char * ptr; | |
4395 | ||
4396 | /* copy these out first because if the username is 32 chars, the next | |
4397 | section will overwrite the first byte of the UIC */ | |
4398 | retpw.pw_uid = up->uaf$w_mem; | |
4399 | retpw.pw_gid = up->uaf$w_grp; | |
4400 | ||
4401 | /* I suppose this is not the best sytle, to possibly overwrite one | |
4402 | byte beyond the end of the field, but what the heck... */ | |
4403 | ptr = &up->uaf$t_username[UAF$S_USERNAME]; | |
4404 | while (ptr[-1] == ' ') | |
4405 | ptr--; | |
4406 | *ptr = '\0'; | |
4407 | strcpy (retpw.pw_name, up->uaf$t_username); | |
4408 | ||
4409 | /* the rest of these are counted ascii strings */ | |
4410 | strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); | |
4411 | retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; | |
4412 | strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); | |
4413 | retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; | |
4414 | strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); | |
4415 | retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; | |
4416 | strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); | |
4417 | retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; | |
4418 | ||
4419 | return &retpw; | |
4420 | } | |
4421 | #else /* not READ_SYSUAF */ | |
4422 | static struct passwd retpw; | |
4423 | #endif /* not READ_SYSUAF */ | |
4424 | ||
4425 | struct passwd * | |
4426 | getpwnam (name) | |
4427 | char * name; | |
4428 | { | |
4429 | #ifdef READ_SYSUAF | |
4430 | struct UAF *up; | |
4431 | #else | |
4432 | char * user; | |
4433 | char * dir; | |
4434 | unsigned char * full; | |
4435 | #endif /* READ_SYSUAF */ | |
4436 | char *ptr = name; | |
4437 | ||
4438 | while (*ptr) | |
4439 | { | |
4440 | if ('a' <= *ptr && *ptr <= 'z') | |
4441 | *ptr -= 040; | |
4442 | ptr++; | |
4443 | } | |
4444 | #ifdef READ_SYSUAF | |
4445 | if (!(up = get_uaf_name (name))) | |
4446 | return 0; | |
4447 | return cnv_uaf_pw (up); | |
4448 | #else | |
4449 | if (strcmp (name, getenv ("USER")) == 0) | |
4450 | { | |
4451 | retpw.pw_uid = getuid (); | |
4452 | retpw.pw_gid = getgid (); | |
4453 | strcpy (retpw.pw_name, name); | |
4454 | if (full = egetenv ("FULLNAME")) | |
4455 | strcpy (retpw.pw_gecos, full); | |
4456 | else | |
4457 | *retpw.pw_gecos = '\0'; | |
4458 | strcpy (retpw.pw_dir, egetenv ("HOME")); | |
4459 | *retpw.pw_shell = '\0'; | |
4460 | return &retpw; | |
4461 | } | |
4462 | else | |
4463 | return 0; | |
4464 | #endif /* not READ_SYSUAF */ | |
4465 | } | |
4466 | ||
4467 | struct passwd * | |
4468 | getpwuid (uid) | |
4469 | unsigned long uid; | |
4470 | { | |
4471 | #ifdef READ_SYSUAF | |
4472 | struct UAF * up; | |
4473 | ||
4474 | if (!(up = get_uaf_uic (uid))) | |
4475 | return 0; | |
4476 | return cnv_uaf_pw (up); | |
4477 | #else | |
4478 | if (uid == sys_getuid ()) | |
4479 | return getpwnam (egetenv ("USER")); | |
4480 | else | |
4481 | return 0; | |
4482 | #endif /* not READ_SYSUAF */ | |
4483 | } | |
4484 | ||
4485 | /* return total address space available to the current process. This is | |
4486 | the sum of the current p0 size, p1 size and free page table entries | |
4487 | available. */ | |
4488 | vlimit () | |
4489 | { | |
4490 | int item_code; | |
4491 | unsigned long free_pages; | |
4492 | unsigned long frep0va; | |
4493 | unsigned long frep1va; | |
4494 | register status; | |
4495 | ||
4496 | item_code = JPI$_FREPTECNT; | |
4497 | if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) | |
4498 | { | |
4499 | errno = EVMSERR; | |
4500 | vaxc$errno = status; | |
4501 | return -1; | |
4502 | } | |
4503 | free_pages *= 512; | |
4504 | ||
4505 | item_code = JPI$_FREP0VA; | |
4506 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) | |
4507 | { | |
4508 | errno = EVMSERR; | |
4509 | vaxc$errno = status; | |
4510 | return -1; | |
4511 | } | |
4512 | item_code = JPI$_FREP1VA; | |
4513 | if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) | |
4514 | { | |
4515 | errno = EVMSERR; | |
4516 | vaxc$errno = status; | |
4517 | return -1; | |
4518 | } | |
4519 | ||
4520 | return free_pages + frep0va + (0x7fffffff - frep1va); | |
4521 | } | |
4522 | ||
4523 | define_logical_name (varname, string) | |
4524 | char *varname; | |
4525 | char *string; | |
4526 | { | |
4527 | struct dsc$descriptor_s strdsc = | |
4528 | {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; | |
4529 | struct dsc$descriptor_s envdsc = | |
4530 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4531 | struct dsc$descriptor_s lnmdsc = | |
4532 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4533 | ||
4534 | return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); | |
4535 | } | |
4536 | ||
4537 | delete_logical_name (varname) | |
4538 | char *varname; | |
4539 | { | |
4540 | struct dsc$descriptor_s envdsc = | |
4541 | {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; | |
4542 | struct dsc$descriptor_s lnmdsc = | |
4543 | {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; | |
4544 | ||
4545 | return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); | |
4546 | } | |
4547 | ||
4548 | ulimit () | |
4549 | {} | |
4550 | ||
86a5659e JB |
4551 | setpgrp () |
4552 | {} | |
4553 | ||
4554 | execvp () | |
4555 | { | |
4556 | error ("execvp system call not implemented"); | |
4557 | } | |
4558 | ||
4559 | int | |
4560 | rename (from, to) | |
4561 | char *from, *to; | |
4562 | { | |
4563 | int status; | |
4564 | struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; | |
4565 | struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; | |
4566 | char from_esn[NAM$C_MAXRSS]; | |
4567 | char to_esn[NAM$C_MAXRSS]; | |
4568 | ||
4569 | from_fab.fab$l_fna = from; | |
4570 | from_fab.fab$b_fns = strlen (from); | |
4571 | from_fab.fab$l_nam = &from_nam; | |
4572 | from_fab.fab$l_fop = FAB$M_NAM; | |
4573 | ||
4574 | from_nam.nam$l_esa = from_esn; | |
4575 | from_nam.nam$b_ess = sizeof from_esn; | |
4576 | ||
4577 | to_fab.fab$l_fna = to; | |
4578 | to_fab.fab$b_fns = strlen (to); | |
4579 | to_fab.fab$l_nam = &to_nam; | |
4580 | to_fab.fab$l_fop = FAB$M_NAM; | |
4581 | ||
4582 | to_nam.nam$l_esa = to_esn; | |
4583 | to_nam.nam$b_ess = sizeof to_esn; | |
4584 | ||
4585 | status = SYS$RENAME (&from_fab, 0, 0, &to_fab); | |
4586 | ||
4587 | if (status & 1) | |
4588 | return 0; | |
4589 | else | |
4590 | { | |
4591 | if (status == RMS$_DEV) | |
4592 | errno = EXDEV; | |
4593 | else | |
4594 | errno = EVMSERR; | |
4595 | vaxc$errno = status; | |
4596 | return -1; | |
4597 | } | |
4598 | } | |
4599 | ||
4600 | /* This function renames a file like `rename', but it strips | |
4601 | the version number from the "to" filename, such that the "to" file is | |
4602 | will always be a new version. It also sets the file protection once it is | |
4603 | finished. The protection that we will use is stored in fab_final_pro, | |
4604 | and was set when we did a creat_copy_attrs to create the file that we | |
4605 | are renaming. | |
4606 | ||
4607 | We could use the chmod function, but Eunichs uses 3 bits per user category | |
eb8c3be9 | 4608 | to describe the protection, and VMS uses 4 (write and delete are separate |
86a5659e JB |
4609 | bits). To maintain portability, the VMS implementation of `chmod' wires |
4610 | the W and D bits together. */ | |
4611 | ||
4612 | ||
4613 | static struct fibdef fib; /* We need this initialized to zero */ | |
4614 | char vms_file_written[NAM$C_MAXRSS]; | |
4615 | ||
4616 | int | |
4617 | rename_sans_version (from,to) | |
4618 | char *from, *to; | |
4619 | { | |
4620 | short int chan; | |
4621 | int stat; | |
4622 | short int iosb[4]; | |
4623 | int status; | |
4624 | struct FAB to_fab = cc$rms_fab; | |
4625 | struct NAM to_nam = cc$rms_nam; | |
4626 | struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; | |
4627 | struct dsc$descriptor fib_attr[2] | |
4628 | = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; | |
4629 | char to_esn[NAM$C_MAXRSS]; | |
4630 | ||
4631 | $DESCRIPTOR (disk,to_esn); | |
4632 | ||
4633 | to_fab.fab$l_fna = to; | |
4634 | to_fab.fab$b_fns = strlen (to); | |
4635 | to_fab.fab$l_nam = &to_nam; | |
4636 | to_fab.fab$l_fop = FAB$M_NAM; | |
4637 | ||
4638 | to_nam.nam$l_esa = to_esn; | |
4639 | to_nam.nam$b_ess = sizeof to_esn; | |
4640 | ||
4641 | status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ | |
4642 | ||
4643 | if (to_nam.nam$l_fnb && NAM$M_EXP_VER) | |
4644 | *(to_nam.nam$l_ver) = '\0'; | |
4645 | ||
4646 | stat = rename (from, to_esn); | |
4647 | if (stat < 0) | |
4648 | return stat; | |
4649 | ||
4650 | strcpy (vms_file_written, to_esn); | |
4651 | ||
4652 | to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ | |
4653 | to_fab.fab$b_fns = strlen (vms_file_written); | |
4654 | ||
4655 | /* Now set the file protection to the correct value */ | |
986ffb24 | 4656 | SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ |
86a5659e JB |
4657 | |
4658 | /* Copy these fields into the fib */ | |
4659 | fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; | |
4660 | fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; | |
4661 | fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; | |
4662 | ||
986ffb24 | 4663 | SYS$CLOSE (&to_fab, 0, 0); |
86a5659e | 4664 | |
986ffb24 | 4665 | stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ |
86a5659e | 4666 | if (!stat) |
986ffb24 JB |
4667 | LIB$SIGNAL (stat); |
4668 | stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, | |
86a5659e JB |
4669 | 0, 0, 0, &fib_attr, 0); |
4670 | if (!stat) | |
986ffb24 JB |
4671 | LIB$SIGNAL (stat); |
4672 | stat = SYS$DASSGN (chan); | |
86a5659e | 4673 | if (!stat) |
986ffb24 | 4674 | LIB$SIGNAL (stat); |
0137dbf7 | 4675 | strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ |
86a5659e JB |
4676 | return 0; |
4677 | } | |
4678 | ||
4679 | link (file, new) | |
4680 | char * file, * new; | |
4681 | { | |
4682 | register status; | |
4683 | struct FAB fab; | |
4684 | struct NAM nam; | |
4685 | unsigned short fid[3]; | |
4686 | char esa[NAM$C_MAXRSS]; | |
4687 | ||
4688 | fab = cc$rms_fab; | |
4689 | fab.fab$l_fop = FAB$M_OFP; | |
4690 | fab.fab$l_fna = file; | |
4691 | fab.fab$b_fns = strlen (file); | |
4692 | fab.fab$l_nam = &nam; | |
4693 | ||
4694 | nam = cc$rms_nam; | |
4695 | nam.nam$l_esa = esa; | |
4696 | nam.nam$b_ess = NAM$C_MAXRSS; | |
4697 | ||
4698 | status = SYS$PARSE (&fab); | |
4699 | if ((status & 1) == 0) | |
4700 | { | |
4701 | errno = EVMSERR; | |
4702 | vaxc$errno = status; | |
4703 | return -1; | |
4704 | } | |
4705 | status = SYS$SEARCH (&fab); | |
4706 | if ((status & 1) == 0) | |
4707 | { | |
4708 | errno = EVMSERR; | |
4709 | vaxc$errno = status; | |
4710 | return -1; | |
4711 | } | |
4712 | ||
4713 | fid[0] = nam.nam$w_fid[0]; | |
4714 | fid[1] = nam.nam$w_fid[1]; | |
4715 | fid[2] = nam.nam$w_fid[2]; | |
4716 | ||
4717 | fab.fab$l_fna = new; | |
4718 | fab.fab$b_fns = strlen (new); | |
4719 | ||
4720 | status = SYS$PARSE (&fab); | |
4721 | if ((status & 1) == 0) | |
4722 | { | |
4723 | errno = EVMSERR; | |
4724 | vaxc$errno = status; | |
4725 | return -1; | |
4726 | } | |
4727 | ||
4728 | nam.nam$w_fid[0] = fid[0]; | |
4729 | nam.nam$w_fid[1] = fid[1]; | |
4730 | nam.nam$w_fid[2] = fid[2]; | |
4731 | ||
4732 | nam.nam$l_esa = nam.nam$l_name; | |
4733 | nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; | |
4734 | ||
4735 | status = SYS$ENTER (&fab); | |
4736 | if ((status & 1) == 0) | |
4737 | { | |
4738 | errno = EVMSERR; | |
4739 | vaxc$errno = status; | |
4740 | return -1; | |
4741 | } | |
4742 | ||
4743 | return 0; | |
4744 | } | |
4745 | ||
4746 | croak (badfunc) | |
4747 | char *badfunc; | |
4748 | { | |
4749 | printf ("%s not yet implemented\r\n", badfunc); | |
4750 | reset_sys_modes (); | |
4751 | exit (1); | |
4752 | } | |
4753 | ||
4754 | long | |
4755 | random () | |
4756 | { | |
4757 | /* Arrange to return a range centered on zero. */ | |
4758 | return rand () - (1 << 30); | |
4759 | } | |
4760 | ||
4761 | srandom (seed) | |
4762 | { | |
4763 | srand (seed); | |
4764 | } | |
4765 | #endif /* VMS */ | |
4766 | \f | |
4767 | #ifdef AIX | |
4768 | ||
4769 | /* Called from init_sys_modes. */ | |
4770 | hft_init () | |
4771 | { | |
4772 | int junk; | |
4773 | ||
4774 | /* If we're not on an HFT we shouldn't do any of this. We determine | |
4775 | if we are on an HFT by trying to get an HFT error code. If this | |
4776 | call fails, we're not on an HFT. */ | |
4777 | #ifdef IBMR2AIX | |
4778 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4779 | return; | |
4780 | #else /* not IBMR2AIX */ | |
4781 | if (ioctl (0, HFQEIO, 0) < 0) | |
4782 | return; | |
4783 | #endif /* not IBMR2AIX */ | |
4784 | ||
4785 | /* On AIX the default hft keyboard mapping uses backspace rather than delete | |
4786 | as the rubout key's ASCII code. Here this is changed. The bug is that | |
4787 | there's no way to determine the old mapping, so in reset_sys_modes | |
4788 | we need to assume that the normal map had been present. Of course, this | |
4789 | code also doesn't help if on a terminal emulator which doesn't understand | |
4790 | HFT VTD's. */ | |
4791 | { | |
4792 | struct hfbuf buf; | |
4793 | struct hfkeymap keymap; | |
4794 | ||
4795 | buf.hf_bufp = (char *)&keymap; | |
4796 | buf.hf_buflen = sizeof (keymap); | |
4797 | keymap.hf_nkeys = 2; | |
4798 | keymap.hfkey[0].hf_kpos = 15; | |
4799 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4800 | #ifdef IBMR2AIX | |
4801 | keymap.hfkey[0].hf_keyidh = '<'; | |
4802 | #else /* not IBMR2AIX */ | |
4803 | keymap.hfkey[0].hf_page = '<'; | |
4804 | #endif /* not IBMR2AIX */ | |
4805 | keymap.hfkey[0].hf_char = 127; | |
4806 | keymap.hfkey[1].hf_kpos = 15; | |
4807 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4808 | #ifdef IBMR2AIX | |
4809 | keymap.hfkey[1].hf_keyidh = '<'; | |
4810 | #else /* not IBMR2AIX */ | |
4811 | keymap.hfkey[1].hf_page = '<'; | |
4812 | #endif /* not IBMR2AIX */ | |
4813 | keymap.hfkey[1].hf_char = 127; | |
4814 | hftctl (0, HFSKBD, &buf); | |
4815 | } | |
4816 | /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly | |
4817 | at times. */ | |
4818 | line_ins_del_ok = char_ins_del_ok = 0; | |
4819 | } | |
4820 | ||
4821 | /* Reset the rubout key to backspace. */ | |
4822 | ||
4823 | hft_reset () | |
4824 | { | |
4825 | struct hfbuf buf; | |
4826 | struct hfkeymap keymap; | |
4827 | int junk; | |
4828 | ||
4829 | #ifdef IBMR2AIX | |
4830 | if (ioctl (0, HFQERROR, &junk) < 0) | |
4831 | return; | |
4832 | #else /* not IBMR2AIX */ | |
4833 | if (ioctl (0, HFQEIO, 0) < 0) | |
4834 | return; | |
4835 | #endif /* not IBMR2AIX */ | |
4836 | ||
4837 | buf.hf_bufp = (char *)&keymap; | |
4838 | buf.hf_buflen = sizeof (keymap); | |
4839 | keymap.hf_nkeys = 2; | |
4840 | keymap.hfkey[0].hf_kpos = 15; | |
4841 | keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; | |
4842 | #ifdef IBMR2AIX | |
4843 | keymap.hfkey[0].hf_keyidh = '<'; | |
4844 | #else /* not IBMR2AIX */ | |
4845 | keymap.hfkey[0].hf_page = '<'; | |
4846 | #endif /* not IBMR2AIX */ | |
4847 | keymap.hfkey[0].hf_char = 8; | |
4848 | keymap.hfkey[1].hf_kpos = 15; | |
4849 | keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; | |
4850 | #ifdef IBMR2AIX | |
4851 | keymap.hfkey[1].hf_keyidh = '<'; | |
4852 | #else /* not IBMR2AIX */ | |
4853 | keymap.hfkey[1].hf_page = '<'; | |
4854 | #endif /* not IBMR2AIX */ | |
4855 | keymap.hfkey[1].hf_char = 8; | |
4856 | hftctl (0, HFSKBD, &buf); | |
4857 | } | |
4858 | ||
4859 | #endif /* AIX */ |