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