Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
acaf905b | 2 | Copyright (C) 1985-1988, 1993-1995, 1999-2012 |
8cabe764 | 3 | Free Software Foundation, Inc. |
86a5659e JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
86a5659e | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
86a5659e JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
86a5659e | 19 | |
4838e624 | 20 | #include <config.h> |
f162bcc3 PE |
21 | |
22 | #define SYSTIME_INLINE EXTERN_INLINE | |
23 | ||
cf29dd84 | 24 | #include <execinfo.h> |
5890e9f7 | 25 | #include <stdio.h> |
06e111a6 DN |
26 | #ifdef HAVE_PWD_H |
27 | #include <pwd.h> | |
28 | #include <grp.h> | |
29 | #endif /* HAVE_PWD_H */ | |
06e111a6 | 30 | #include <limits.h> |
d3eb3bfa | 31 | #include <unistd.h> |
53934c98 | 32 | |
d1fdcab7 | 33 | #include <allocator.h> |
620f13b0 | 34 | #include <c-ctype.h> |
d1fdcab7 | 35 | #include <careadlinkat.h> |
67342916 | 36 | #include <ignore-value.h> |
d35af63c | 37 | #include <utimens.h> |
67342916 | 38 | |
86a5659e | 39 | #include "lisp.h" |
819b8f00 | 40 | #include "sysselect.h" |
9ac0d9e0 | 41 | #include "blockinput.h" |
86a5659e | 42 | |
7dca65a4 PE |
43 | #ifdef BSD_SYSTEM |
44 | #include <sys/param.h> | |
b91b7e4d | 45 | #include <sys/sysctl.h> |
7dca65a4 PE |
46 | #endif |
47 | ||
48 | #ifdef __FreeBSD__ | |
b91b7e4d | 49 | #include <sys/user.h> |
d054f3fb | 50 | #include <sys/resource.h> |
b91b7e4d EW |
51 | #include <math.h> |
52 | #endif | |
53 | ||
fe03522b | 54 | #ifdef WINDOWSNT |
e15b6288 JR |
55 | #define read sys_read |
56 | #define write sys_write | |
62aba0d4 FP |
57 | #ifndef STDERR_FILENO |
58 | #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE)) | |
59 | #endif | |
fe03522b | 60 | #include <windows.h> |
fe03522b RS |
61 | #endif /* not WINDOWSNT */ |
62 | ||
86a5659e JB |
63 | #include <sys/types.h> |
64 | #include <sys/stat.h> | |
65 | #include <errno.h> | |
66 | ||
b05af5d3 PE |
67 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
68 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
69 | #include <sys/systeminfo.h> | |
70 | #endif | |
71 | ||
207bdbdb | 72 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
207bdbdb RS |
73 | #include "msdos.h" |
74 | #include <sys/param.h> | |
15614e61 | 75 | #endif |
207bdbdb | 76 | |
bb4bc8e2 | 77 | #include <sys/file.h> |
bb4bc8e2 | 78 | #include <fcntl.h> |
86a5659e | 79 | |
e04a4e0d | 80 | #include "systty.h" |
94c8642a | 81 | #include "syswait.h" |
86a5659e | 82 | |
a7ebc409 | 83 | #ifdef HAVE_SYS_UTSNAME_H |
86a5659e | 84 | #include <sys/utsname.h> |
86a5659e | 85 | #include <memory.h> |
a7ebc409 | 86 | #endif /* HAVE_SYS_UTSNAME_H */ |
86a5659e | 87 | |
e36ec798 | 88 | #include "keyboard.h" |
0137dbf7 | 89 | #include "frame.h" |
86a5659e JB |
90 | #include "window.h" |
91 | #include "termhooks.h" | |
92 | #include "termchar.h" | |
93 | #include "termopts.h" | |
94 | #include "dispextern.h" | |
95 | #include "process.h" | |
0a125897 | 96 | #include "cm.h" /* for reset_sys_modes */ |
86a5659e | 97 | |
fe03522b RS |
98 | #ifdef WINDOWSNT |
99 | #include <direct.h> | |
100 | /* In process.h which conflicts with the local copy. */ | |
101 | #define _P_WAIT 0 | |
43db14bb JB |
102 | int _cdecl _spawnlp (int, const char *, const char *, ...); |
103 | int _cdecl _getpid (void); | |
b6682dd9 | 104 | extern char *getwd (char *); |
fe03522b RS |
105 | #endif |
106 | ||
91bac16a JB |
107 | #include "syssignal.h" |
108 | #include "systime.h" | |
86a5659e | 109 | |
1fa53021 PE |
110 | static int emacs_get_tty (int, struct emacs_tty *); |
111 | static int emacs_set_tty (int, struct emacs_tty *, int); | |
112 | ||
5a16b9bc PE |
113 | /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */ |
114 | #ifndef ULLONG_MAX | |
115 | #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int) | |
116 | #endif | |
117 | ||
ff2e8052 DN |
118 | /* Declare here, including term.h is problematic on some systems. */ |
119 | extern void tputs (const char *, int, int (*)(int)); | |
120 | ||
91433552 | 121 | static const int baud_convert[] = |
86a5659e JB |
122 | { |
123 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
124 | 1800, 2400, 4800, 9600, 19200, 38400 | |
125 | }; | |
86a5659e | 126 | |
f78f1a83 | 127 | |
3480d92b | 128 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) |
f78f1a83 | 129 | |
b6682dd9 | 130 | /* Return the current working directory. Returns NULL on errors. |
f78f1a83 EZ |
131 | Any other returned value must be freed with free. This is used |
132 | only when get_current_dir_name is not defined on the system. */ | |
133 | char* | |
cf84bb53 | 134 | get_current_dir_name (void) |
f78f1a83 EZ |
135 | { |
136 | char *buf; | |
137 | char *pwd; | |
138 | struct stat dotstat, pwdstat; | |
139 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
140 | sometimes a nicer name, and using it may avoid a fatal error if a | |
141 | parent directory is searchable but not readable. */ | |
142 | if ((pwd = getenv ("PWD")) != 0 | |
143 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
144 | && stat (pwd, &pwdstat) == 0 | |
145 | && stat (".", &dotstat) == 0 | |
146 | && dotstat.st_ino == pwdstat.st_ino | |
147 | && dotstat.st_dev == pwdstat.st_dev | |
148 | #ifdef MAXPATHLEN | |
149 | && strlen (pwd) < MAXPATHLEN | |
150 | #endif | |
151 | ) | |
152 | { | |
38182d90 | 153 | buf = malloc (strlen (pwd) + 1); |
f78f1a83 EZ |
154 | if (!buf) |
155 | return NULL; | |
156 | strcpy (buf, pwd); | |
157 | } | |
158 | #ifdef HAVE_GETCWD | |
159 | else | |
160 | { | |
161 | size_t buf_size = 1024; | |
38182d90 | 162 | buf = malloc (buf_size); |
f78f1a83 EZ |
163 | if (!buf) |
164 | return NULL; | |
165 | for (;;) | |
166 | { | |
167 | if (getcwd (buf, buf_size) == buf) | |
168 | break; | |
169 | if (errno != ERANGE) | |
170 | { | |
171 | int tmp_errno = errno; | |
172 | free (buf); | |
173 | errno = tmp_errno; | |
174 | return NULL; | |
175 | } | |
176 | buf_size *= 2; | |
38182d90 | 177 | buf = realloc (buf, buf_size); |
f78f1a83 EZ |
178 | if (!buf) |
179 | return NULL; | |
180 | } | |
181 | } | |
182 | #else | |
183 | else | |
184 | { | |
185 | /* We need MAXPATHLEN here. */ | |
38182d90 | 186 | buf = malloc (MAXPATHLEN + 1); |
f78f1a83 EZ |
187 | if (!buf) |
188 | return NULL; | |
189 | if (getwd (buf) == NULL) | |
190 | { | |
191 | int tmp_errno = errno; | |
192 | free (buf); | |
193 | errno = tmp_errno; | |
194 | return NULL; | |
195 | } | |
196 | } | |
197 | #endif | |
198 | return buf; | |
199 | } | |
200 | #endif | |
201 | ||
64e971c3 | 202 | \f |
9628b887 | 203 | /* Discard pending input on all input descriptors. */ |
91bac16a | 204 | |
08633194 | 205 | void |
971de7fb | 206 | discard_tty_input (void) |
86a5659e | 207 | { |
fe03522b | 208 | #ifndef WINDOWSNT |
91bac16a | 209 | struct emacs_tty buf; |
86a5659e JB |
210 | |
211 | if (noninteractive) | |
212 | return; | |
213 | ||
fe03522b | 214 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 215 | while (dos_keyread () != -1) |
fe03522b | 216 | ; |
207bdbdb | 217 | #else /* not MSDOS */ |
9628b887 | 218 | { |
28d7d09f | 219 | struct tty_display_info *tty; |
9628b887 KL |
220 | for (tty = tty_list; tty; tty = tty->next) |
221 | { | |
0b0d3e0b KL |
222 | if (tty->input) /* Is the device suspended? */ |
223 | { | |
12e610e8 DN |
224 | emacs_get_tty (fileno (tty->input), &buf); |
225 | emacs_set_tty (fileno (tty->input), &buf, 0); | |
0b0d3e0b | 226 | } |
9628b887 KL |
227 | } |
228 | } | |
207bdbdb | 229 | #endif /* not MSDOS */ |
fe03522b | 230 | #endif /* not WINDOWSNT */ |
86a5659e JB |
231 | } |
232 | ||
16c290d8 | 233 | \f |
86a5659e JB |
234 | #ifdef SIGTSTP |
235 | ||
64e971c3 | 236 | /* Arrange for character C to be read as the next input from |
16c290d8 KL |
237 | the terminal. |
238 | XXX What if we have multiple ttys? | |
239 | */ | |
64e971c3 | 240 | |
dfcf069d | 241 | void |
0c2338d8 | 242 | stuff_char (char c) |
86a5659e | 243 | { |
428a555e | 244 | if (! FRAME_TERMCAP_P (SELECTED_FRAME ())) |
23dab951 RS |
245 | return; |
246 | ||
86a5659e JB |
247 | /* Should perhaps error if in batch mode */ |
248 | #ifdef TIOCSTI | |
0b0d3e0b | 249 | ioctl (fileno (CURTTY()->input), TIOCSTI, &c); |
86a5659e | 250 | #else /* no TIOCSTI */ |
71f06467 | 251 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
252 | #endif /* no TIOCSTI */ |
253 | } | |
254 | ||
255 | #endif /* SIGTSTP */ | |
64e971c3 | 256 | \f |
08633194 | 257 | void |
16c290d8 | 258 | init_baud_rate (int fd) |
86a5659e | 259 | { |
4c620157 | 260 | int emacs_ospeed; |
67342916 | 261 | |
86a5659e | 262 | if (noninteractive) |
5bdd7bdd | 263 | emacs_ospeed = 0; |
86a5659e JB |
264 | else |
265 | { | |
fe03522b | 266 | #ifdef DOS_NT |
5bdd7bdd | 267 | emacs_ospeed = 15; |
fe03522b | 268 | #else /* not DOS_NT */ |
e04a4e0d | 269 | struct termios sg; |
91bac16a | 270 | |
71f06467 | 271 | sg.c_cflag = B9600; |
16c290d8 | 272 | tcgetattr (fd, &sg); |
5bdd7bdd | 273 | emacs_ospeed = cfgetospeed (&sg); |
fe03522b | 274 | #endif /* not DOS_NT */ |
86a5659e | 275 | } |
177c0ea7 | 276 | |
5bdd7bdd GM |
277 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
278 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
279 | if (baud_rate == 0) |
280 | baud_rate = 1200; | |
281 | } | |
282 | ||
16c290d8 | 283 | \f |
86a5659e | 284 | |
77defa9a | 285 | #ifndef MSDOS |
86a5659e | 286 | |
e7a6747f | 287 | static void |
d311d28c | 288 | wait_for_termination_1 (pid_t pid, int interruptible) |
86a5659e JB |
289 | { |
290 | while (1) | |
291 | { | |
d6dae14b EZ |
292 | #ifdef WINDOWSNT |
293 | wait (0); | |
294 | break; | |
295 | #else /* not WINDOWSNT */ | |
4d7e6e51 PE |
296 | int status; |
297 | int wait_result = waitpid (pid, &status, 0); | |
298 | if (wait_result < 0) | |
9ab714c7 | 299 | { |
4d7e6e51 PE |
300 | if (errno != EINTR) |
301 | break; | |
302 | } | |
303 | else | |
304 | { | |
305 | record_child_status_change (wait_result, status); | |
9ab714c7 RS |
306 | break; |
307 | } | |
ac3ac859 | 308 | |
d6dae14b | 309 | #endif /* not WINDOWSNT */ |
1ef14cb4 LMI |
310 | if (interruptible) |
311 | QUIT; | |
86a5659e JB |
312 | } |
313 | } | |
314 | ||
e7a6747f AS |
315 | /* Wait for subprocess with process id `pid' to terminate and |
316 | make sure it will get eliminated (not remain forever as a zombie) */ | |
317 | ||
318 | void | |
d311d28c | 319 | wait_for_termination (pid_t pid) |
e7a6747f AS |
320 | { |
321 | wait_for_termination_1 (pid, 0); | |
322 | } | |
323 | ||
324 | /* Like the above, but allow keyboard interruption. */ | |
325 | void | |
d311d28c | 326 | interruptible_wait_for_termination (pid_t pid) |
e7a6747f AS |
327 | { |
328 | wait_for_termination_1 (pid, 1); | |
329 | } | |
330 | ||
86a5659e JB |
331 | /* |
332 | * flush any pending output | |
333 | * (may flush input as well; it does not matter the way we use it) | |
334 | */ | |
177c0ea7 | 335 | |
08633194 | 336 | void |
971de7fb | 337 | flush_pending_output (int channel) |
86a5659e | 338 | { |
9de940b5 | 339 | /* FIXME: maybe this function should be removed */ |
86a5659e | 340 | } |
64e971c3 | 341 | \f |
86a5659e JB |
342 | /* Set up the terminal at the other end of a pseudo-terminal that |
343 | we will be controlling an inferior through. | |
344 | It should not echo or do line-editing, since that is done | |
345 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
346 | ||
08633194 | 347 | void |
971de7fb | 348 | child_setup_tty (int out) |
86a5659e | 349 | { |
77defa9a | 350 | #ifndef WINDOWSNT |
91bac16a JB |
351 | struct emacs_tty s; |
352 | ||
12e610e8 | 353 | emacs_get_tty (out, &s); |
91bac16a JB |
354 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
355 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 356 | #ifdef NLDLY |
07cfc4e7 GM |
357 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html |
358 | Some versions of GNU Hurd do not have FFDLY? */ | |
359 | #ifdef FFDLY | |
91bac16a JB |
360 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
361 | /* No output delays */ | |
07cfc4e7 GM |
362 | #else |
363 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY); | |
364 | /* No output delays */ | |
365 | #endif | |
9d4e5eea | 366 | #endif |
91bac16a JB |
367 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
368 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
369 | #ifdef IUCLC |
370 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
371 | #endif | |
f7097b2a RS |
372 | #ifdef ISTRIP |
373 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
374 | #endif | |
23e4c8be | 375 | #ifdef OLCUC |
9d4e5eea RS |
376 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
377 | #endif | |
f7097b2a | 378 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 379 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
441f6399 RS |
380 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
381 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 382 | |
86a5659e | 383 | #ifdef HPUX |
91bac16a | 384 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 385 | #endif /* HPUX */ |
91bac16a | 386 | |
dfe598b5 RS |
387 | #ifdef SIGNALS_VIA_CHARACTERS |
388 | /* the QUIT and INTR character are used in process_send_signal | |
389 | so set them here to something useful. */ | |
fa51fa32 | 390 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 391 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 392 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
393 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
394 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
395 | ||
86a5659e | 396 | #ifdef AIX |
86a5659e JB |
397 | /* Also, PTY overloads NUL and BREAK. |
398 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
399 | s.main.c_iflag &= ~IGNBRK; |
400 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
401 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
402 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
403 | would force it to 0377. That looks like duplicated code. */ | |
91bac16a | 404 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
405 | #endif /* AIX */ |
406 | ||
aaa0a19a | 407 | /* We originally enabled ICANON (and set VEOF to 04), and then had |
c80e3b4a | 408 | process.c send additional EOF chars to flush the output when faced |
aaa0a19a | 409 | with long lines, but this leads to weird effects when the |
2b0a91e7 SM |
410 | subprocess has disabled ICANON and ends up seeing those spurious |
411 | extra EOFs. So we don't send EOFs any more in | |
aaa0a19a SM |
412 | process.c:send_process. First we tried to disable ICANON by |
413 | default, so if a subsprocess sets up ICANON, it's his problem (or | |
414 | the Elisp package that talks to it) to deal with lines that are | |
415 | too long. But this disables some features, such as the ability | |
416 | to send EOF signals. So we re-enabled ICANON but there is no | |
417 | more "send eof to flush" going on (which is wrong and unportable | |
418 | in itself). The correct way to handle too much output is to | |
419 | buffer what could not be written and then write it again when | |
420 | select returns ok for writing. This has it own set of | |
421 | problems. Write is now asynchronous, is that a problem? How much | |
422 | do we buffer, and what do we do when that limit is reached? */ | |
9a747ba6 JD |
423 | |
424 | s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */ | |
425 | s.main.c_cc[VEOF] = 'D'&037; /* Control-D */ | |
3d15fe78 | 426 | #if 0 /* These settings only apply to non-ICANON mode. */ |
2b0a91e7 SM |
427 | s.main.c_cc[VMIN] = 1; |
428 | s.main.c_cc[VTIME] = 0; | |
aaa0a19a | 429 | #endif |
2b0a91e7 | 430 | |
12e610e8 | 431 | emacs_set_tty (out, &s, 0); |
77defa9a | 432 | #endif /* not WINDOWSNT */ |
86a5659e | 433 | } |
57507bf8 | 434 | #endif /* not MSDOS */ |
86a5659e | 435 | |
64e971c3 | 436 | \f |
2fe28299 | 437 | /* Record a signal code and the action for it. */ |
86a5659e JB |
438 | struct save_signal |
439 | { | |
440 | int code; | |
2fe28299 | 441 | struct sigaction action; |
86a5659e JB |
442 | }; |
443 | ||
f57e2426 J |
444 | static void save_signal_handlers (struct save_signal *); |
445 | static void restore_signal_handlers (struct save_signal *); | |
35a05cca | 446 | |
86a5659e JB |
447 | /* Suspend the Emacs process; give terminal to its superior. */ |
448 | ||
08633194 | 449 | void |
971de7fb | 450 | sys_suspend (void) |
86a5659e | 451 | { |
c4ea52a6 | 452 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 453 | |
5a570e37 | 454 | { |
69deda53 | 455 | pid_t pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
456 | EMACS_KILLPG (pgrp, SIGTSTP); |
457 | } | |
86a5659e JB |
458 | |
459 | #else /* No SIGTSTP */ | |
86a5659e JB |
460 | /* On a system where suspending is not implemented, |
461 | instead fork a subshell and let it talk directly to the terminal | |
462 | while we wait. */ | |
a0932daa KH |
463 | sys_subshell (); |
464 | ||
a0932daa | 465 | #endif /* no SIGTSTP */ |
a0932daa KH |
466 | } |
467 | ||
468 | /* Fork a subshell. */ | |
469 | ||
08633194 | 470 | void |
971de7fb | 471 | sys_subshell (void) |
a0932daa | 472 | { |
ad00c243 | 473 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
474 | int st; |
475 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
476 | #endif | |
efa04277 | 477 | int pid; |
86a5659e | 478 | struct save_signal saved_handlers[5]; |
efa04277 | 479 | Lisp_Object dir; |
5e41f65d | 480 | unsigned char *volatile str_volatile = 0; |
7e9123a2 | 481 | unsigned char *str; |
efa04277 | 482 | int len; |
86a5659e JB |
483 | |
484 | saved_handlers[0].code = SIGINT; | |
485 | saved_handlers[1].code = SIGQUIT; | |
486 | saved_handlers[2].code = SIGTERM; | |
4a4bbad2 | 487 | #ifdef USABLE_SIGIO |
86a5659e JB |
488 | saved_handlers[3].code = SIGIO; |
489 | saved_handlers[4].code = 0; | |
490 | #else | |
491 | saved_handlers[3].code = 0; | |
492 | #endif | |
493 | ||
efa04277 RS |
494 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
495 | which somehow wedges the hp compiler. So instead... */ | |
496 | ||
497 | dir = intern ("default-directory"); | |
0e7e7a58 | 498 | if (NILP (Fboundp (dir))) |
efa04277 RS |
499 | goto xyzzy; |
500 | dir = Fsymbol_value (dir); | |
914e81a2 | 501 | if (!STRINGP (dir)) |
efa04277 RS |
502 | goto xyzzy; |
503 | ||
504 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
38182d90 | 505 | str_volatile = str = alloca (SCHARS (dir) + 2); |
d5db4077 | 506 | len = SCHARS (dir); |
72af86bd | 507 | memcpy (str, SDATA (dir), len); |
efa04277 RS |
508 | if (str[len - 1] != '/') str[len++] = '/'; |
509 | str[len] = 0; | |
510 | xyzzy: | |
511 | ||
ad00c243 | 512 | #ifdef DOS_NT |
7964ba9e | 513 | pid = 0; |
718ca3cf RS |
514 | save_signal_handlers (saved_handlers); |
515 | synch_process_alive = 1; | |
177c0ea7 | 516 | #else |
efa04277 | 517 | pid = vfork (); |
86a5659e JB |
518 | if (pid == -1) |
519 | error ("Can't spawn subshell"); | |
7964ba9e RS |
520 | #endif |
521 | ||
86a5659e JB |
522 | if (pid == 0) |
523 | { | |
8ea90aa3 | 524 | const char *sh = 0; |
86a5659e | 525 | |
ad00c243 | 526 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 527 | getwd (oldwd); |
7964ba9e RS |
528 | if (sh == 0) |
529 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 530 | #endif |
7964ba9e RS |
531 | if (sh == 0) |
532 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
533 | if (sh == 0) |
534 | sh = "sh"; | |
207bdbdb | 535 | |
86a5659e | 536 | /* Use our buffer's default directory for the subshell. */ |
5e41f65d | 537 | str = str_volatile; |
32299e33 PE |
538 | if (str && chdir ((char *) str) != 0) |
539 | { | |
540 | #ifndef DOS_NT | |
541 | ignore_value (write (1, "Can't chdir\n", 12)); | |
542 | _exit (1); | |
543 | #endif | |
544 | } | |
efa04277 | 545 | |
86a5659e | 546 | close_process_descs (); /* Close Emacs's pipes/ptys */ |
1593c2fe | 547 | |
fe03522b | 548 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 549 | { |
48178f9a EZ |
550 | char *epwd = getenv ("PWD"); |
551 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
552 | |
553 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 554 | if (epwd) |
c0917202 | 555 | { |
48178f9a | 556 | strcpy (old_pwd, epwd); |
c0917202 EZ |
557 | if (str[len - 1] == '/') |
558 | str[len - 1] = '\0'; | |
559 | setenv ("PWD", str, 1); | |
560 | } | |
561 | st = system (sh); | |
32299e33 | 562 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
48178f9a | 563 | if (epwd) |
c0917202 EZ |
564 | putenv (old_pwd); /* restore previous value */ |
565 | } | |
207bdbdb | 566 | #else /* not MSDOS */ |
fe03522b | 567 | #ifdef WINDOWSNT |
fe03522b RS |
568 | /* Waits for process completion */ |
569 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
32299e33 | 570 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
fe03522b RS |
571 | if (pid == -1) |
572 | write (1, "Can't execute subshell", 22); | |
fe03522b | 573 | #else /* not WINDOWSNT */ |
e120ea40 | 574 | execlp (sh, sh, (char *) 0); |
67342916 | 575 | ignore_value (write (1, "Can't execute subshell", 22)); |
86a5659e | 576 | _exit (1); |
fe03522b | 577 | #endif /* not WINDOWSNT */ |
207bdbdb | 578 | #endif /* not MSDOS */ |
86a5659e JB |
579 | } |
580 | ||
718ca3cf | 581 | /* Do this now if we did not do it before. */ |
ed68db4d | 582 | #ifndef MSDOS |
86a5659e | 583 | save_signal_handlers (saved_handlers); |
ffafc793 | 584 | synch_process_alive = 1; |
718ca3cf RS |
585 | #endif |
586 | ||
ad00c243 | 587 | #ifndef DOS_NT |
86a5659e | 588 | wait_for_termination (pid); |
7964ba9e | 589 | #endif |
86a5659e | 590 | restore_signal_handlers (saved_handlers); |
718ca3cf | 591 | synch_process_alive = 0; |
86a5659e JB |
592 | } |
593 | ||
35a05cca | 594 | static void |
971de7fb | 595 | save_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
596 | { |
597 | while (saved_handlers->code) | |
598 | { | |
2fe28299 PE |
599 | struct sigaction action; |
600 | emacs_sigaction_init (&action, SIG_IGN); | |
601 | sigaction (saved_handlers->code, &action, &saved_handlers->action); | |
86a5659e JB |
602 | saved_handlers++; |
603 | } | |
604 | } | |
605 | ||
35a05cca | 606 | static void |
971de7fb | 607 | restore_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
608 | { |
609 | while (saved_handlers->code) | |
610 | { | |
2fe28299 | 611 | sigaction (saved_handlers->code, &saved_handlers->action, 0); |
86a5659e JB |
612 | saved_handlers++; |
613 | } | |
614 | } | |
615 | \f | |
4a4bbad2 | 616 | #ifdef USABLE_SIGIO |
1fa53021 | 617 | static int old_fcntl_flags[MAXDESC]; |
4a4bbad2 | 618 | #endif |
86a5659e | 619 | |
08633194 | 620 | void |
971de7fb | 621 | init_sigio (int fd) |
86a5659e | 622 | { |
4a4bbad2 | 623 | #ifdef USABLE_SIGIO |
819b8f00 KL |
624 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
625 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
23dab951 | 626 | interrupts_deferred = 0; |
4a4bbad2 | 627 | #endif |
86a5659e JB |
628 | } |
629 | ||
604efe86 | 630 | static void |
971de7fb | 631 | reset_sigio (int fd) |
86a5659e | 632 | { |
4a4bbad2 | 633 | #ifdef USABLE_SIGIO |
819b8f00 | 634 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 635 | #endif |
86a5659e JB |
636 | } |
637 | ||
08633194 | 638 | void |
971de7fb | 639 | request_sigio (void) |
86a5659e | 640 | { |
4a4bbad2 | 641 | #ifdef USABLE_SIGIO |
2fe28299 PE |
642 | sigset_t unblocked; |
643 | ||
6bbba5a6 | 644 | if (noninteractive) |
23dab951 RS |
645 | return; |
646 | ||
2fe28299 | 647 | sigemptyset (&unblocked); |
4a4bbad2 | 648 | # ifdef SIGWINCH |
2fe28299 | 649 | sigaddset (&unblocked, SIGWINCH); |
4a4bbad2 | 650 | # endif |
2fe28299 PE |
651 | sigaddset (&unblocked, SIGIO); |
652 | pthread_sigmask (SIG_UNBLOCK, &unblocked, 0); | |
86a5659e JB |
653 | |
654 | interrupts_deferred = 0; | |
4a4bbad2 | 655 | #endif |
86a5659e JB |
656 | } |
657 | ||
08633194 | 658 | void |
0a125897 | 659 | unrequest_sigio (void) |
cf84bb53 | 660 | { |
4a4bbad2 | 661 | #ifdef USABLE_SIGIO |
2fe28299 PE |
662 | sigset_t blocked; |
663 | ||
6bbba5a6 KL |
664 | if (noninteractive) |
665 | return; | |
666 | ||
2fe28299 | 667 | sigemptyset (&blocked); |
4a4bbad2 | 668 | # ifdef SIGWINCH |
2fe28299 | 669 | sigaddset (&blocked, SIGWINCH); |
4a4bbad2 | 670 | # endif |
2fe28299 PE |
671 | sigaddset (&blocked, SIGIO); |
672 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
86a5659e | 673 | interrupts_deferred = 1; |
4a4bbad2 | 674 | #endif |
86a5659e | 675 | } |
177c0ea7 | 676 | |
08633194 | 677 | void |
4a4bbad2 | 678 | ignore_sigio (void) |
86a5659e | 679 | { |
4a4bbad2 PE |
680 | #ifdef USABLE_SIGIO |
681 | signal (SIGIO, SIG_IGN); | |
682 | #endif | |
86a5659e | 683 | } |
feb67dfe | 684 | |
9ae8f997 | 685 | \f |
68936329 JB |
686 | /* Getting and setting emacs_tty structures. */ |
687 | ||
688 | /* Set *TC to the parameters associated with the terminal FD. | |
689 | Return zero if all's well, or -1 if we ran into an error we | |
690 | couldn't deal with. */ | |
691 | int | |
971de7fb | 692 | emacs_get_tty (int fd, struct emacs_tty *settings) |
68936329 JB |
693 | { |
694 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 695 | #ifndef DOS_NT |
68936329 | 696 | /* We have those nifty POSIX tcmumbleattr functions. */ |
72af86bd | 697 | memset (&settings->main, 0, sizeof (settings->main)); |
68936329 JB |
698 | if (tcgetattr (fd, &settings->main) < 0) |
699 | return -1; | |
68936329 JB |
700 | #endif |
701 | ||
702 | /* We have survived the tempest. */ | |
703 | return 0; | |
704 | } | |
705 | ||
706 | ||
707 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 708 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 709 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 710 | |
68936329 | 711 | int |
971de7fb | 712 | emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) |
68936329 JB |
713 | { |
714 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 715 | #ifndef DOS_NT |
e6cc3307 | 716 | int i; |
68936329 JB |
717 | /* We have those nifty POSIX tcmumbleattr functions. |
718 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 719 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
720 | able to perform any of the requested actions, even if some |
721 | of the requested actions could not be performed. | |
722 | We must read settings back to ensure tty setup properly. | |
723 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 724 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 725 | for (i = 0 ; i < 10 ; i++) |
394049ec | 726 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
727 | { |
728 | if (errno == EINTR) | |
729 | continue; | |
730 | else | |
731 | return -1; | |
732 | } | |
733 | else | |
734 | { | |
735 | struct termios new; | |
736 | ||
72af86bd | 737 | memset (&new, 0, sizeof (new)); |
68936329 JB |
738 | /* Get the current settings, and see if they're what we asked for. */ |
739 | tcgetattr (fd, &new); | |
e6cc3307 RS |
740 | /* We cannot use memcmp on the whole structure here because under |
741 | * aix386 the termios structure has some reserved field that may | |
742 | * not be filled in. | |
743 | */ | |
744 | if ( new.c_iflag == settings->main.c_iflag | |
745 | && new.c_oflag == settings->main.c_oflag | |
746 | && new.c_cflag == settings->main.c_cflag | |
747 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 748 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 749 | break; |
e6cc3307 RS |
750 | else |
751 | continue; | |
68936329 | 752 | } |
68936329 | 753 | #endif |
177c0ea7 | 754 | |
68936329 JB |
755 | /* We have survived the tempest. */ |
756 | return 0; | |
757 | } | |
758 | ||
759 | \f | |
86a5659e JB |
760 | |
761 | #ifdef F_SETOWN | |
1fa53021 | 762 | static int old_fcntl_owner[MAXDESC]; |
86a5659e JB |
763 | #endif /* F_SETOWN */ |
764 | ||
86a5659e JB |
765 | /* This may also be defined in stdio, |
766 | but if so, this does no harm, | |
767 | and using the same name avoids wasting the other one's space. */ | |
768 | ||
9d9a7716 | 769 | #if defined (USG) |
86a5659e JB |
770 | unsigned char _sobuf[BUFSIZ+8]; |
771 | #else | |
772 | char _sobuf[BUFSIZ]; | |
773 | #endif | |
177c0ea7 | 774 | |
da8e1115 KL |
775 | /* Initialize the terminal mode on all tty devices that are currently |
776 | open. */ | |
777 | ||
08633194 | 778 | void |
28d440ab KL |
779 | init_all_sys_modes (void) |
780 | { | |
28d7d09f | 781 | struct tty_display_info *tty; |
16c290d8 | 782 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 783 | init_sys_modes (tty); |
28d440ab KL |
784 | } |
785 | ||
da8e1115 KL |
786 | /* Initialize the terminal mode on the given tty device. */ |
787 | ||
28d440ab | 788 | void |
971de7fb | 789 | init_sys_modes (struct tty_display_info *tty_out) |
86a5659e | 790 | { |
91bac16a | 791 | struct emacs_tty tty; |
e112cc37 | 792 | Lisp_Object terminal; |
91bac16a | 793 | |
4ec5cb58 RS |
794 | Vtty_erase_char = Qnil; |
795 | ||
86a5659e JB |
796 | if (noninteractive) |
797 | return; | |
798 | ||
0b0d3e0b KL |
799 | if (!tty_out->output) |
800 | return; /* The tty is suspended. */ | |
cf84bb53 | 801 | |
2246281f | 802 | if (! tty_out->old_tty) |
38182d90 | 803 | tty_out->old_tty = xmalloc (sizeof *tty_out->old_tty); |
cf84bb53 | 804 | |
12e610e8 | 805 | emacs_get_tty (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 806 | |
2246281f | 807 | tty = *tty_out->old_tty; |
86a5659e | 808 | |
a7ebc409 | 809 | #if !defined (DOS_NT) |
2246281f | 810 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 811 | |
2246281f KL |
812 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
813 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
814 | #ifdef INLCR /* I'm just being cautious, |
815 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 816 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 817 | #endif |
86a5659e | 818 | #ifdef ISTRIP |
2246281f | 819 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 820 | #endif |
2246281f KL |
821 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
822 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 823 | #ifdef IEXTEN |
2246281f | 824 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 825 | #endif |
2246281f KL |
826 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
827 | if (tty_out->flow_control) | |
828 | { | |
829 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 830 | #ifdef IXANY |
2246281f | 831 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 832 | #endif /* IXANY */ |
2246281f KL |
833 | } |
834 | else | |
835 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
836 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
837 | on output */ | |
838 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 839 | #ifdef CS8 |
2246281f KL |
840 | if (tty_out->meta_key) |
841 | { | |
842 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
843 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
844 | } | |
86a5659e | 845 | #endif |
e112cc37 ET |
846 | |
847 | XSETTERMINAL(terminal, tty_out->terminal); | |
848 | if (!NILP (Fcontrolling_tty_p (terminal))) | |
2246281f KL |
849 | { |
850 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
851 | /* Set up C-g for both SIGQUIT and SIGINT. | |
852 | We don't know which we will get, but we handle both alike | |
853 | so which one it really gives us does not matter. */ | |
854 | tty.main.c_cc[VQUIT] = quit_char; | |
855 | } | |
856 | else | |
857 | { | |
858 | /* We normally don't get interrupt or quit signals from tty | |
859 | devices other than our controlling terminal; therefore, | |
860 | we must handle C-g as normal input. Unfortunately, this | |
861 | means that the interrupt and quit feature must be | |
862 | disabled on secondary ttys, or we would not even see the | |
863 | keypress. | |
cf84bb53 | 864 | |
2246281f KL |
865 | Note that even though emacsclient could have special code |
866 | to pass SIGINT to Emacs, we should _not_ enable | |
867 | interrupt/quit keys for emacsclient frames. This means | |
868 | that we can't break out of loops in C code from a | |
869 | secondary tty frame, but we can always decide what | |
870 | display the C-g came from, which is more important from a | |
871 | usability point of view. (Consider the case when two | |
872 | people work together using the same Emacs instance.) */ | |
873 | tty.main.c_cc[VINTR] = CDISABLE; | |
874 | tty.main.c_cc[VQUIT] = CDISABLE; | |
875 | } | |
876 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
877 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 878 | #ifdef VSWTCH |
2246281f | 879 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 880 | of C-z */ |
86a5659e | 881 | #endif /* VSWTCH */ |
cf84bb53 | 882 | |
86a5659e | 883 | #ifdef VSUSP |
a7ebc409 | 884 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */ |
86a5659e JB |
885 | #endif /* VSUSP */ |
886 | #ifdef V_DSUSP | |
a7ebc409 | 887 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */ |
86a5659e | 888 | #endif /* V_DSUSP */ |
e2b40c23 | 889 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 890 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 891 | #endif /* VDSUSP */ |
92c995de | 892 | #ifdef VLNEXT |
2246281f | 893 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
894 | #endif /* VLNEXT */ |
895 | #ifdef VREPRINT | |
2246281f | 896 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
897 | #endif /* VREPRINT */ |
898 | #ifdef VWERASE | |
2246281f | 899 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
900 | #endif /* VWERASE */ |
901 | #ifdef VDISCARD | |
2246281f | 902 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 903 | #endif /* VDISCARD */ |
c179a6d1 | 904 | |
2246281f KL |
905 | if (tty_out->flow_control) |
906 | { | |
421dd92f | 907 | #ifdef VSTART |
2246281f | 908 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
909 | #endif /* VSTART */ |
910 | #ifdef VSTOP | |
2246281f | 911 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 912 | #endif /* VSTOP */ |
2246281f KL |
913 | } |
914 | else | |
915 | { | |
c179a6d1 | 916 | #ifdef VSTART |
2246281f | 917 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
918 | #endif /* VSTART */ |
919 | #ifdef VSTOP | |
2246281f | 920 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 921 | #endif /* VSTOP */ |
2246281f | 922 | } |
c179a6d1 | 923 | |
86a5659e | 924 | #ifdef AIX |
f5272227 KL |
925 | tty.main.c_cc[VSTRT] = CDISABLE; |
926 | tty.main.c_cc[VSTOP] = CDISABLE; | |
927 | tty.main.c_cc[VSUSP] = CDISABLE; | |
928 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
2246281f KL |
929 | if (tty_out->flow_control) |
930 | { | |
ac567c95 | 931 | #ifdef VSTART |
2246281f | 932 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
933 | #endif /* VSTART */ |
934 | #ifdef VSTOP | |
2246281f | 935 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 936 | #endif /* VSTOP */ |
2246281f KL |
937 | } |
938 | /* Also, PTY overloads NUL and BREAK. | |
939 | don't ignore break, but don't signal either, so it looks like NUL. | |
940 | This really serves a purpose only if running in an XTERM window | |
941 | or via TELNET or the like, but does no harm elsewhere. */ | |
942 | tty.main.c_iflag &= ~IGNBRK; | |
943 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e | 944 | #endif |
fe03522b | 945 | #endif /* not DOS_NT */ |
cf84bb53 | 946 | |
207bdbdb | 947 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
948 | if (!tty_out->term_initted) |
949 | internal_terminal_init (); | |
4e389d32 | 950 | dos_ttraw (tty_out); |
207bdbdb | 951 | #endif |
91bac16a | 952 | |
12e610e8 | 953 | emacs_set_tty (fileno (tty_out->input), &tty, 0); |
86a5659e | 954 | |
2246281f KL |
955 | /* This code added to insure that, if flow-control is not to be used, |
956 | we have an unlocked terminal at the start. */ | |
91bac16a | 957 | |
86a5659e | 958 | #ifdef TCXONC |
0b0d3e0b | 959 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e | 960 | #endif |
86a5659e | 961 | #ifdef TIOCSTART |
0b0d3e0b | 962 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e | 963 | #endif |
86a5659e | 964 | |
a7ebc409 | 965 | #if !defined (DOS_NT) |
51417996 | 966 | #ifdef TCOON |
0b0d3e0b | 967 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 968 | #endif |
51417996 | 969 | #endif |
d228f207 | 970 | |
86a5659e | 971 | #ifdef F_SETFL |
eb8c3be9 | 972 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
2246281f | 973 | if (interrupt_input) |
86a5659e | 974 | { |
0b0d3e0b KL |
975 | old_fcntl_owner[fileno (tty_out->input)] = |
976 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
977 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
978 | init_sigio (fileno (tty_out->input)); | |
7e5a23bd | 979 | #ifdef HAVE_GPM |
75a8734b | 980 | if (gpm_tty == tty_out) |
3e748bcb | 981 | { |
75a8734b | 982 | /* Arrange for mouse events to give us SIGIO signals. */ |
3e748bcb | 983 | fcntl (gpm_fd, F_SETOWN, getpid ()); |
57669cf1 | 984 | fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK); |
3e748bcb NR |
985 | init_sigio (gpm_fd); |
986 | } | |
7e5a23bd | 987 | #endif /* HAVE_GPM */ |
86a5659e JB |
988 | } |
989 | #endif /* F_GETOWN */ | |
990 | #endif /* F_SETFL */ | |
991 | ||
86a5659e JB |
992 | #ifdef _IOFBF |
993 | /* This symbol is defined on recent USG systems. | |
994 | Someone says without this call USG won't really buffer the file | |
995 | even with a call to setbuf. */ | |
0b0d3e0b | 996 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 997 | #else |
0b0d3e0b | 998 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 999 | #endif |
4d553a13 | 1000 | |
69fb5031 JR |
1001 | if (tty_out->terminal->set_terminal_modes_hook) |
1002 | tty_out->terminal->set_terminal_modes_hook (tty_out->terminal); | |
4b311aaf | 1003 | |
9628b887 KL |
1004 | if (!tty_out->term_initted) |
1005 | { | |
1006 | Lisp_Object tail, frame; | |
1007 | FOR_EACH_FRAME (tail, frame) | |
1008 | { | |
daf01701 | 1009 | /* XXX This needs to be revised. */ |
9628b887 KL |
1010 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1011 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1012 | init_frame_faces (XFRAME (frame)); | |
1013 | } | |
1014 | } | |
045942b2 | 1015 | |
9628b887 | 1016 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1017 | { |
855a0da7 SM |
1018 | /* We used to call "direct_output_forward_char(0)" here, |
1019 | but it's not clear why, since it may not do anything anyway. */ | |
86a5659e JB |
1020 | } |
1021 | else | |
1022 | { | |
9628b887 | 1023 | Lisp_Object tail, frame; |
0137dbf7 | 1024 | frame_garbaged = 1; |
9628b887 KL |
1025 | FOR_EACH_FRAME (tail, frame) |
1026 | { | |
7ab98847 EZ |
1027 | if ((FRAME_TERMCAP_P (XFRAME (frame)) |
1028 | || FRAME_MSDOS_P (XFRAME (frame))) | |
9628b887 KL |
1029 | && FRAME_TTY (XFRAME (frame)) == tty_out) |
1030 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1031 | } | |
86a5659e | 1032 | } |
91bac16a | 1033 | |
9628b887 | 1034 | tty_out->term_initted = 1; |
86a5659e JB |
1035 | } |
1036 | ||
1037 | /* Return nonzero if safe to use tabs in output. | |
1038 | At the time this is called, init_sys_modes has not been done yet. */ | |
177c0ea7 | 1039 | |
dfcf069d | 1040 | int |
16c290d8 | 1041 | tabs_safe_p (int fd) |
86a5659e | 1042 | { |
6548cf00 | 1043 | struct emacs_tty etty; |
91bac16a | 1044 | |
12e610e8 DN |
1045 | emacs_get_tty (fd, &etty); |
1046 | #ifndef DOS_NT | |
1047 | #ifdef TABDLY | |
1048 | return ((etty.main.c_oflag & TABDLY) != TAB3); | |
1049 | #else /* not TABDLY */ | |
1050 | return 1; | |
1051 | #endif /* not TABDLY */ | |
1052 | #else /* DOS_NT */ | |
1053 | return 0; | |
1054 | #endif /* DOS_NT */ | |
86a5659e | 1055 | } |
73d5358f | 1056 | \f |
86a5659e | 1057 | /* Get terminal size from system. |
73d5358f RS |
1058 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1059 | We store 0 if there's no valid information. */ | |
86a5659e | 1060 | |
08633194 | 1061 | void |
16c290d8 | 1062 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1063 | { |
e16e55d4 | 1064 | #if defined TIOCGWINSZ |
91bac16a JB |
1065 | |
1066 | /* BSD-style. */ | |
86a5659e | 1067 | struct winsize size; |
91bac16a | 1068 | |
16c290d8 | 1069 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1070 | *widthp = *heightp = 0; |
1071 | else | |
1072 | { | |
1073 | *widthp = size.ws_col; | |
1074 | *heightp = size.ws_row; | |
1075 | } | |
1076 | ||
e16e55d4 | 1077 | #elif defined TIOCGSIZE |
91bac16a JB |
1078 | |
1079 | /* SunOS - style. */ | |
177c0ea7 | 1080 | struct ttysize size; |
91bac16a | 1081 | |
16c290d8 | 1082 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1083 | *widthp = *heightp = 0; |
1084 | else | |
1085 | { | |
1086 | *widthp = size.ts_cols; | |
1087 | *heightp = size.ts_lines; | |
1088 | } | |
1089 | ||
e16e55d4 JB |
1090 | #elif defined WINDOWSNT |
1091 | ||
1092 | CONSOLE_SCREEN_BUFFER_INFO info; | |
1093 | if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info)) | |
1094 | { | |
1095 | *widthp = info.srWindow.Right - info.srWindow.Left + 1; | |
1096 | *heightp = info.srWindow.Bottom - info.srWindow.Top + 1; | |
1097 | } | |
1098 | else | |
1099 | *widthp = *heightp = 0; | |
1100 | ||
1101 | #elif defined MSDOS | |
1102 | ||
207bdbdb RS |
1103 | *widthp = ScreenCols (); |
1104 | *heightp = ScreenRows (); | |
e16e55d4 | 1105 | |
86a5659e | 1106 | #else /* system doesn't know size */ |
e16e55d4 | 1107 | |
86a5659e JB |
1108 | *widthp = 0; |
1109 | *heightp = 0; | |
e16e55d4 | 1110 | |
207bdbdb | 1111 | #endif |
86a5659e | 1112 | } |
91bac16a | 1113 | |
73d5358f RS |
1114 | /* Set the logical window size associated with descriptor FD |
1115 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1116 | ||
1117 | int | |
971de7fb | 1118 | set_window_size (int fd, int height, int width) |
73d5358f RS |
1119 | { |
1120 | #ifdef TIOCSWINSZ | |
1121 | ||
1122 | /* BSD-style. */ | |
1123 | struct winsize size; | |
1124 | size.ws_row = height; | |
1125 | size.ws_col = width; | |
1126 | ||
1127 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1128 | return 0; /* error */ | |
1129 | else | |
1130 | return 1; | |
1131 | ||
1132 | #else | |
1133 | #ifdef TIOCSSIZE | |
1134 | ||
1135 | /* SunOS - style. */ | |
177c0ea7 | 1136 | struct ttysize size; |
73d5358f RS |
1137 | size.ts_lines = height; |
1138 | size.ts_cols = width; | |
1139 | ||
1140 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1141 | return 0; | |
1142 | else | |
1143 | return 1; | |
1144 | #else | |
1145 | return -1; | |
1146 | #endif /* not SunOS-style */ | |
1147 | #endif /* not BSD-style */ | |
1148 | } | |
1149 | ||
86a5659e | 1150 | \f |
da8e1115 KL |
1151 | |
1152 | /* Prepare all terminal devices for exiting Emacs. */ | |
1153 | ||
28d440ab KL |
1154 | void |
1155 | reset_all_sys_modes (void) | |
1156 | { | |
28d7d09f | 1157 | struct tty_display_info *tty; |
16c290d8 | 1158 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1159 | reset_sys_modes (tty); |
28d440ab KL |
1160 | } |
1161 | ||
0a125897 | 1162 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1163 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1164 | |
08633194 | 1165 | void |
971de7fb | 1166 | reset_sys_modes (struct tty_display_info *tty_out) |
86a5659e JB |
1167 | { |
1168 | if (noninteractive) | |
1169 | { | |
1170 | fflush (stdout); | |
1171 | return; | |
1172 | } | |
9628b887 | 1173 | if (!tty_out->term_initted) |
86a5659e | 1174 | return; |
da8e1115 | 1175 | |
0b0d3e0b KL |
1176 | if (!tty_out->output) |
1177 | return; /* The tty is suspended. */ | |
cf84bb53 | 1178 | |
da8e1115 KL |
1179 | /* Go to and clear the last line of the terminal. */ |
1180 | ||
0a125897 | 1181 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
cf84bb53 | 1182 | |
da8e1115 KL |
1183 | /* Code adapted from tty_clear_end_of_line. */ |
1184 | if (tty_out->TS_clr_line) | |
1185 | { | |
1186 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1187 | } | |
1188 | else | |
1189 | { /* have to do it the hard way */ | |
1190 | int i; | |
ed8dad6b | 1191 | tty_turn_off_insert (tty_out); |
cf84bb53 | 1192 | |
da8e1115 | 1193 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1194 | { |
1195 | fputc (' ', tty_out->output); | |
1196 | } | |
da8e1115 | 1197 | } |
cf84bb53 | 1198 | |
0a125897 | 1199 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 | 1200 | fflush (tty_out->output); |
cf84bb53 | 1201 | |
69fb5031 JR |
1202 | if (tty_out->terminal->reset_terminal_modes_hook) |
1203 | tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal); | |
2f98e6e3 | 1204 | |
2a633456 | 1205 | #ifdef BSD_SYSTEM |
86a5659e | 1206 | /* Avoid possible loss of output when changing terminal modes. */ |
0b0d3e0b | 1207 | fsync (fileno (tty_out->output)); |
86a5659e | 1208 | #endif |
91bac16a | 1209 | |
86a5659e | 1210 | #ifdef F_SETFL |
eb8c3be9 | 1211 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1212 | if (interrupt_input) |
1213 | { | |
0b0d3e0b KL |
1214 | reset_sigio (fileno (tty_out->input)); |
1215 | fcntl (fileno (tty_out->input), F_SETOWN, | |
1216 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
1217 | } |
1218 | #endif /* F_SETOWN */ | |
a6b00318 | 1219 | #ifdef O_NDELAY |
0b0d3e0b KL |
1220 | fcntl (fileno (tty_out->input), F_SETFL, |
1221 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NDELAY); | |
a6b00318 | 1222 | #endif |
86a5659e | 1223 | #endif /* F_SETFL */ |
91bac16a | 1224 | |
fca177d4 | 1225 | if (tty_out->old_tty) |
12e610e8 | 1226 | while (emacs_set_tty (fileno (tty_out->input), |
fca177d4 | 1227 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 1228 | ; |
86a5659e | 1229 | |
207bdbdb RS |
1230 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1231 | dos_ttcooked (); | |
1232 | #endif | |
1233 | ||
86a5659e JB |
1234 | } |
1235 | \f | |
1236 | #ifdef HAVE_PTYS | |
1237 | ||
1238 | /* Set up the proper status flags for use of a pty. */ | |
1239 | ||
08633194 | 1240 | void |
971de7fb | 1241 | setup_pty (int fd) |
86a5659e JB |
1242 | { |
1243 | /* I'm told that TOICREMOTE does not mean control chars | |
1244 | "can't be sent" but rather that they don't have | |
1245 | input-editing or signaling effects. | |
1246 | That should be good, because we have other ways | |
1247 | to do those things in Emacs. | |
1248 | However, telnet mode seems not to work on 4.2. | |
1249 | So TIOCREMOTE is turned off now. */ | |
1250 | ||
1251 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1252 | will hang. In particular, the "timeout" feature (which | |
1253 | causes a read to return if there is no data available) | |
1254 | does this. Also it is known that telnet mode will hang | |
1255 | in such a way that Emacs must be stopped (perhaps this | |
1256 | is the same problem). | |
177c0ea7 | 1257 | |
86a5659e JB |
1258 | If TIOCREMOTE is turned off, then there is a bug in |
1259 | hp-ux which sometimes loses data. Apparently the | |
1260 | code which blocks the master process when the internal | |
1261 | buffer fills up does not work. Other than this, | |
1262 | though, everything else seems to work fine. | |
177c0ea7 | 1263 | |
86a5659e JB |
1264 | Since the latter lossage is more benign, we may as well |
1265 | lose that way. -- cph */ | |
1266 | #ifdef FIONBIO | |
5e617bc2 | 1267 | #if defined (UNIX98_PTYS) |
86a5659e JB |
1268 | { |
1269 | int on = 1; | |
1270 | ioctl (fd, FIONBIO, &on); | |
1271 | } | |
1272 | #endif | |
1273 | #endif | |
86a5659e JB |
1274 | } |
1275 | #endif /* HAVE_PTYS */ | |
1276 | \f | |
f8a80313 RS |
1277 | #ifdef HAVE_SOCKETS |
1278 | #include <sys/socket.h> | |
1279 | #include <netdb.h> | |
1280 | #endif /* HAVE_SOCKETS */ | |
f8a80313 | 1281 | |
8581cd64 KH |
1282 | #ifdef TRY_AGAIN |
1283 | #ifndef HAVE_H_ERRNO | |
1284 | extern int h_errno; | |
1285 | #endif | |
1286 | #endif /* TRY_AGAIN */ | |
1287 | ||
c0c86835 | 1288 | void |
971de7fb | 1289 | init_system_name (void) |
86a5659e | 1290 | { |
210b2b4f | 1291 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
1292 | struct utsname uts; |
1293 | uname (&uts); | |
1294 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 1295 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 1296 | unsigned int hostname_size = 256; |
38182d90 | 1297 | char *hostname = alloca (hostname_size); |
c0c86835 KH |
1298 | |
1299 | /* Try to get the host name; if the buffer is too short, try | |
1300 | again. Apparently, the only indication gethostname gives of | |
1301 | whether the buffer was large enough is the presence or absence | |
1302 | of a '\0' in the string. Eech. */ | |
1303 | for (;;) | |
1304 | { | |
1305 | gethostname (hostname, hostname_size - 1); | |
1306 | hostname[hostname_size - 1] = '\0'; | |
1307 | ||
1308 | /* Was the buffer large enough for the '\0'? */ | |
1309 | if (strlen (hostname) < hostname_size - 1) | |
1310 | break; | |
1311 | ||
1312 | hostname_size <<= 1; | |
38182d90 | 1313 | hostname = alloca (hostname_size); |
c0c86835 | 1314 | } |
67004ffb | 1315 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
1316 | /* Turn the hostname into the official, fully-qualified hostname. |
1317 | Don't do this if we're going to dump; this can confuse system | |
1318 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 1319 | #ifndef CANNOT_DUMP |
c0c86835 | 1320 | if (initialized) |
67004ffb | 1321 | #endif /* not CANNOT_DUMP */ |
8966b757 | 1322 | if (! strchr (hostname, '.')) |
960d894c | 1323 | { |
960d894c | 1324 | int count; |
3d66b985 JD |
1325 | #ifdef HAVE_GETADDRINFO |
1326 | struct addrinfo *res; | |
1327 | struct addrinfo hints; | |
1328 | int ret; | |
1329 | ||
cf84bb53 | 1330 | memset (&hints, 0, sizeof (hints)); |
3d66b985 JD |
1331 | hints.ai_socktype = SOCK_STREAM; |
1332 | hints.ai_flags = AI_CANONNAME; | |
1333 | ||
960d894c KH |
1334 | for (count = 0;; count++) |
1335 | { | |
3d66b985 JD |
1336 | if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0 |
1337 | || ret != EAI_AGAIN) | |
1338 | break; | |
1339 | ||
1340 | if (count >= 5) | |
1341 | break; | |
1342 | Fsleep_for (make_number (1), Qnil); | |
1343 | } | |
1344 | ||
1345 | if (ret == 0) | |
1346 | { | |
1347 | struct addrinfo *it = res; | |
1348 | while (it) | |
1349 | { | |
1350 | char *fqdn = it->ai_canonname; | |
8966b757 | 1351 | if (fqdn && strchr (fqdn, '.') |
3d66b985 JD |
1352 | && strcmp (fqdn, "localhost.localdomain") != 0) |
1353 | break; | |
1354 | it = it->ai_next; | |
1355 | } | |
1356 | if (it) | |
1357 | { | |
1358 | hostname = alloca (strlen (it->ai_canonname) + 1); | |
1359 | strcpy (hostname, it->ai_canonname); | |
1360 | } | |
1361 | freeaddrinfo (res); | |
1362 | } | |
1363 | #else /* !HAVE_GETADDRINFO */ | |
1364 | struct hostent *hp; | |
1365 | for (count = 0;; count++) | |
1366 | { | |
1367 | ||
e24f1d55 | 1368 | #ifdef TRY_AGAIN |
960d894c | 1369 | h_errno = 0; |
e24f1d55 | 1370 | #endif |
960d894c | 1371 | hp = gethostbyname (hostname); |
efa04277 | 1372 | #ifdef TRY_AGAIN |
960d894c KH |
1373 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
1374 | #endif | |
3d66b985 | 1375 | |
960d894c | 1376 | break; |
3d66b985 | 1377 | |
960d894c KH |
1378 | if (count >= 5) |
1379 | break; | |
1380 | Fsleep_for (make_number (1), Qnil); | |
1381 | } | |
3d66b985 | 1382 | |
960d894c KH |
1383 | if (hp) |
1384 | { | |
1385 | char *fqdn = (char *) hp->h_name; | |
960d894c | 1386 | |
8966b757 | 1387 | if (!strchr (fqdn, '.')) |
960d894c KH |
1388 | { |
1389 | /* We still don't have a fully qualified domain name. | |
1390 | Try to find one in the list of alternate names */ | |
1391 | char **alias = hp->h_aliases; | |
923721f4 | 1392 | while (*alias |
8966b757 | 1393 | && (!strchr (*alias, '.') |
923721f4 | 1394 | || !strcmp (*alias, "localhost.localdomain"))) |
960d894c KH |
1395 | alias++; |
1396 | if (*alias) | |
1397 | fqdn = *alias; | |
1398 | } | |
1399 | hostname = fqdn; | |
960d894c | 1400 | } |
3d66b985 | 1401 | #endif /* !HAVE_GETADDRINFO */ |
960d894c | 1402 | } |
67004ffb | 1403 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 1404 | Vsystem_name = build_string (hostname); |
67004ffb | 1405 | #endif /* HAVE_GETHOSTNAME */ |
c0c86835 KH |
1406 | { |
1407 | unsigned char *p; | |
d5db4077 | 1408 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
1409 | if (*p == ' ' || *p == '\t') |
1410 | *p = '-'; | |
1411 | } | |
67004ffb | 1412 | } |
86a5659e | 1413 | \f |
1fa53021 | 1414 | sigset_t empty_mask; |
86a5659e | 1415 | |
4d7e6e51 PE |
1416 | static struct sigaction process_fatal_action; |
1417 | ||
1418 | static int | |
1419 | emacs_sigaction_flags (void) | |
86a5659e | 1420 | { |
4d7e6e51 | 1421 | #ifdef SA_RESTART |
0caaedb1 PE |
1422 | /* SA_RESTART causes interruptible functions with timeouts (e.g., |
1423 | 'select') to reset their timeout on some platforms (e.g., | |
1424 | HP-UX 11), which is not what we want. Also, when Emacs is | |
1425 | interactive, we don't want SA_RESTART because we need to poll | |
275464e7 | 1426 | for pending input so we need long-running syscalls to be interrupted |
4d7e6e51 PE |
1427 | after a signal that sets pending_signals. |
1428 | ||
1429 | Non-interactive keyboard input goes through stdio, where we | |
1430 | always want restartable system calls. */ | |
ef874e3d | 1431 | if (noninteractive) |
4d7e6e51 | 1432 | return SA_RESTART; |
e065a56e | 1433 | #endif |
4d7e6e51 PE |
1434 | return 0; |
1435 | } | |
1436 | ||
1437 | /* Store into *ACTION a signal action suitable for Emacs, with handler | |
1438 | HANDLER. */ | |
1439 | void | |
1440 | emacs_sigaction_init (struct sigaction *action, signal_handler_t handler) | |
1441 | { | |
1442 | sigemptyset (&action->sa_mask); | |
1443 | ||
1444 | /* When handling a signal, block nonfatal system signals that are caught | |
1445 | by Emacs. This makes race conditions less likely. */ | |
1446 | sigaddset (&action->sa_mask, SIGALRM); | |
1447 | #ifdef SIGCHLD | |
1448 | sigaddset (&action->sa_mask, SIGCHLD); | |
1449 | #endif | |
1450 | #ifdef SIGDANGER | |
1451 | sigaddset (&action->sa_mask, SIGDANGER); | |
1452 | #endif | |
d89460ed PE |
1453 | #ifdef PROFILER_CPU_SUPPORT |
1454 | sigaddset (&action->sa_mask, SIGPROF); | |
1455 | #endif | |
4d7e6e51 PE |
1456 | #ifdef SIGWINCH |
1457 | sigaddset (&action->sa_mask, SIGWINCH); | |
1458 | #endif | |
1459 | if (! noninteractive) | |
1460 | { | |
1461 | sigaddset (&action->sa_mask, SIGINT); | |
1462 | sigaddset (&action->sa_mask, SIGQUIT); | |
1463 | #ifdef USABLE_SIGIO | |
1464 | sigaddset (&action->sa_mask, SIGIO); | |
1465 | #endif | |
1466 | } | |
1467 | ||
1468 | if (! IEEE_FLOATING_POINT) | |
1469 | sigaddset (&action->sa_mask, SIGFPE); | |
1470 | ||
1471 | action->sa_handler = handler; | |
1472 | action->sa_flags = emacs_sigaction_flags (); | |
86a5659e JB |
1473 | } |
1474 | ||
20ef56db | 1475 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
0caaedb1 | 1476 | static pthread_t main_thread; |
20ef56db PE |
1477 | #endif |
1478 | ||
4d7e6e51 PE |
1479 | /* SIG has arrived at the current process. Deliver it to the main |
1480 | thread, which should handle it with HANDLER. | |
1481 | ||
1482 | If we are on the main thread, handle the signal SIG with HANDLER. | |
20ef56db PE |
1483 | Otherwise, redirect the signal to the main thread, blocking it from |
1484 | this thread. POSIX says any thread can receive a signal that is | |
1485 | associated with a process, process group, or asynchronous event. | |
1486 | On GNU/Linux that is not true, but for other systems (FreeBSD at | |
1487 | least) it is. */ | |
1488 | void | |
4d7e6e51 | 1489 | deliver_process_signal (int sig, signal_handler_t handler) |
20ef56db PE |
1490 | { |
1491 | /* Preserve errno, to avoid race conditions with signal handlers that | |
1492 | might change errno. Races can occur even in single-threaded hosts. */ | |
1493 | int old_errno = errno; | |
1494 | ||
1495 | bool on_main_thread = true; | |
1496 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1497 | if (! pthread_equal (pthread_self (), main_thread)) | |
1498 | { | |
1499 | sigset_t blocked; | |
1500 | sigemptyset (&blocked); | |
1501 | sigaddset (&blocked, sig); | |
1502 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
1503 | pthread_kill (main_thread, sig); | |
1504 | on_main_thread = false; | |
1505 | } | |
1506 | #endif | |
1507 | if (on_main_thread) | |
1508 | handler (sig); | |
1509 | ||
1510 | errno = old_errno; | |
1511 | } | |
4d7e6e51 PE |
1512 | |
1513 | /* Static location to save a fatal backtrace in a thread. | |
1514 | FIXME: If two subsidiary threads fail simultaneously, the resulting | |
1515 | backtrace may be garbage. */ | |
1516 | enum { BACKTRACE_LIMIT_MAX = 500 }; | |
1517 | static void *thread_backtrace_buffer[BACKTRACE_LIMIT_MAX + 1]; | |
1518 | static int thread_backtrace_npointers; | |
1519 | ||
1520 | /* SIG has arrived at the current thread. | |
1521 | If we are on the main thread, handle the signal SIG with HANDLER. | |
1522 | Otherwise, this is a fatal error in the handling thread. */ | |
1523 | static void | |
1524 | deliver_thread_signal (int sig, signal_handler_t handler) | |
1525 | { | |
1526 | int old_errno = errno; | |
1527 | ||
1528 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1529 | if (! pthread_equal (pthread_self (), main_thread)) | |
1530 | { | |
1531 | thread_backtrace_npointers | |
1532 | = backtrace (thread_backtrace_buffer, BACKTRACE_LIMIT_MAX); | |
1533 | sigaction (sig, &process_fatal_action, 0); | |
1534 | pthread_kill (main_thread, sig); | |
1535 | ||
1536 | /* Avoid further damage while the main thread is exiting. */ | |
1537 | while (1) | |
1538 | sigsuspend (&empty_mask); | |
1539 | } | |
1540 | #endif | |
1541 | ||
1542 | handler (sig); | |
1543 | errno = old_errno; | |
1544 | } | |
86a5659e | 1545 | \f |
aa1ba90e PE |
1546 | #if !HAVE_DECL_SYS_SIGLIST |
1547 | # undef sys_siglist | |
c622b48f PE |
1548 | # ifdef _sys_siglist |
1549 | # define sys_siglist _sys_siglist | |
1550 | # else | |
1551 | # define sys_siglist my_sys_siglist | |
aa1ba90e | 1552 | static char const *sys_siglist[NSIG]; |
c622b48f PE |
1553 | # endif |
1554 | #endif | |
1555 | ||
1556 | #ifdef _sys_nsig | |
1557 | # define sys_siglist_entries _sys_nsig | |
1558 | #else | |
1559 | # define sys_siglist_entries NSIG | |
ca9c0567 PE |
1560 | #endif |
1561 | ||
4d7e6e51 PE |
1562 | /* Handle bus errors, invalid instruction, etc. */ |
1563 | static void | |
1564 | handle_fatal_signal (int sig) | |
1565 | { | |
9d4dcdc9 | 1566 | terminate_due_to_signal (sig, 40); |
4d7e6e51 PE |
1567 | } |
1568 | ||
1569 | static void | |
1570 | deliver_fatal_signal (int sig) | |
1571 | { | |
1572 | deliver_process_signal (sig, handle_fatal_signal); | |
1573 | } | |
1574 | ||
1575 | static void | |
1576 | deliver_fatal_thread_signal (int sig) | |
1577 | { | |
1578 | deliver_thread_signal (sig, handle_fatal_signal); | |
1579 | } | |
1580 | ||
1581 | static _Noreturn void | |
1582 | handle_arith_signal (int sig) | |
1583 | { | |
1584 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
1585 | xsignal0 (Qarith_error); | |
1586 | } | |
1587 | ||
1588 | static void | |
1589 | deliver_arith_signal (int sig) | |
1590 | { | |
1591 | deliver_thread_signal (sig, handle_arith_signal); | |
1592 | } | |
1593 | ||
1594 | /* Treat SIG as a terminating signal, unless it is already ignored and | |
1595 | we are in --batch mode. Among other things, this makes nohup work. */ | |
1596 | static void | |
1597 | maybe_fatal_sig (int sig) | |
1598 | { | |
1599 | bool catch_sig = !noninteractive; | |
1600 | if (!catch_sig) | |
1601 | { | |
1602 | struct sigaction old_action; | |
1603 | sigaction (sig, 0, &old_action); | |
1604 | catch_sig = old_action.sa_handler != SIG_IGN; | |
1605 | } | |
1606 | if (catch_sig) | |
1607 | sigaction (sig, &process_fatal_action, 0); | |
1608 | } | |
1609 | ||
ca9c0567 | 1610 | void |
4d7e6e51 | 1611 | init_signals (bool dumping) |
ca9c0567 | 1612 | { |
4d7e6e51 PE |
1613 | struct sigaction thread_fatal_action; |
1614 | struct sigaction action; | |
1615 | ||
ca9c0567 | 1616 | sigemptyset (&empty_mask); |
ca9c0567 | 1617 | |
20ef56db PE |
1618 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
1619 | main_thread = pthread_self (); | |
1620 | #endif | |
1621 | ||
c622b48f | 1622 | #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist |
ca9c0567 PE |
1623 | if (! initialized) |
1624 | { | |
ca9c0567 | 1625 | sys_siglist[SIGABRT] = "Aborted"; |
ca9c0567 PE |
1626 | # ifdef SIGAIO |
1627 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
1628 | # endif | |
1629 | # ifdef SIGALRM | |
1630 | sys_siglist[SIGALRM] = "Alarm clock"; | |
1631 | # endif | |
1632 | # ifdef SIGBUS | |
1633 | sys_siglist[SIGBUS] = "Bus error"; | |
1634 | # endif | |
1635 | # ifdef SIGCLD | |
1636 | sys_siglist[SIGCLD] = "Child status changed"; | |
1637 | # endif | |
1638 | # ifdef SIGCHLD | |
1639 | sys_siglist[SIGCHLD] = "Child status changed"; | |
1640 | # endif | |
1641 | # ifdef SIGCONT | |
1642 | sys_siglist[SIGCONT] = "Continued"; | |
1643 | # endif | |
1644 | # ifdef SIGDANGER | |
1645 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
1646 | # endif | |
1647 | # ifdef SIGDGNOTIFY | |
1648 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
1649 | # endif | |
1650 | # ifdef SIGEMT | |
1651 | sys_siglist[SIGEMT] = "Emulation trap"; | |
1652 | # endif | |
ca9c0567 | 1653 | sys_siglist[SIGFPE] = "Arithmetic exception"; |
ca9c0567 PE |
1654 | # ifdef SIGFREEZE |
1655 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
1656 | # endif | |
1657 | # ifdef SIGGRANT | |
1658 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
1659 | # endif | |
1660 | # ifdef SIGHUP | |
1661 | sys_siglist[SIGHUP] = "Hangup"; | |
1662 | # endif | |
ca9c0567 | 1663 | sys_siglist[SIGILL] = "Illegal instruction"; |
ca9c0567 | 1664 | sys_siglist[SIGINT] = "Interrupt"; |
ca9c0567 PE |
1665 | # ifdef SIGIO |
1666 | sys_siglist[SIGIO] = "I/O possible"; | |
1667 | # endif | |
1668 | # ifdef SIGIOINT | |
1669 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
1670 | # endif | |
1671 | # ifdef SIGIOT | |
1672 | sys_siglist[SIGIOT] = "IOT trap"; | |
1673 | # endif | |
1674 | # ifdef SIGKILL | |
1675 | sys_siglist[SIGKILL] = "Killed"; | |
1676 | # endif | |
1677 | # ifdef SIGLOST | |
1678 | sys_siglist[SIGLOST] = "Resource lost"; | |
1679 | # endif | |
1680 | # ifdef SIGLWP | |
1681 | sys_siglist[SIGLWP] = "SIGLWP"; | |
1682 | # endif | |
1683 | # ifdef SIGMSG | |
1684 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
1685 | # endif | |
1686 | # ifdef SIGPHONE | |
1687 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
1688 | # endif | |
1689 | # ifdef SIGPIPE | |
1690 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
1691 | # endif | |
1692 | # ifdef SIGPOLL | |
1693 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
1694 | # endif | |
1695 | # ifdef SIGPROF | |
1696 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
1697 | # endif | |
1698 | # ifdef SIGPTY | |
1699 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
1700 | # endif | |
1701 | # ifdef SIGPWR | |
1702 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
1703 | # endif | |
1704 | # ifdef SIGQUIT | |
1705 | sys_siglist[SIGQUIT] = "Quit"; | |
1706 | # endif | |
1707 | # ifdef SIGRETRACT | |
40ba43b4 | 1708 | sys_siglist[SIGRETRACT] = "Need to relinquish monitor mode"; |
ca9c0567 PE |
1709 | # endif |
1710 | # ifdef SIGSAK | |
1711 | sys_siglist[SIGSAK] = "Secure attention"; | |
1712 | # endif | |
ca9c0567 | 1713 | sys_siglist[SIGSEGV] = "Segmentation violation"; |
ca9c0567 PE |
1714 | # ifdef SIGSOUND |
1715 | sys_siglist[SIGSOUND] = "Sound completed"; | |
1716 | # endif | |
1717 | # ifdef SIGSTOP | |
1718 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
1719 | # endif | |
1720 | # ifdef SIGSTP | |
1721 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
1722 | # endif | |
1723 | # ifdef SIGSYS | |
1724 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
1725 | # endif | |
ca9c0567 | 1726 | sys_siglist[SIGTERM] = "Terminated"; |
ca9c0567 PE |
1727 | # ifdef SIGTHAW |
1728 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
1729 | # endif | |
1730 | # ifdef SIGTRAP | |
1731 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
1732 | # endif | |
1733 | # ifdef SIGTSTP | |
1734 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
1735 | # endif | |
1736 | # ifdef SIGTTIN | |
1737 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
1738 | # endif | |
1739 | # ifdef SIGTTOU | |
1740 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
1741 | # endif | |
1742 | # ifdef SIGURG | |
1743 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
1744 | # endif | |
1745 | # ifdef SIGUSR1 | |
1746 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
1747 | # endif | |
1748 | # ifdef SIGUSR2 | |
1749 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
1750 | # endif | |
1751 | # ifdef SIGVTALRM | |
1752 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
1753 | # endif | |
1754 | # ifdef SIGWAITING | |
1755 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
1756 | # endif | |
1757 | # ifdef SIGWINCH | |
1758 | sys_siglist[SIGWINCH] = "Window size changed"; | |
1759 | # endif | |
1760 | # ifdef SIGWIND | |
1761 | sys_siglist[SIGWIND] = "SIGWIND"; | |
1762 | # endif | |
1763 | # ifdef SIGXCPU | |
1764 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
1765 | # endif | |
1766 | # ifdef SIGXFSZ | |
1767 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
1768 | # endif | |
1769 | } | |
c622b48f | 1770 | #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */ |
4d7e6e51 PE |
1771 | |
1772 | /* Don't alter signal handlers if dumping. On some machines, | |
1773 | changing signal handlers sets static data that would make signals | |
1774 | fail to work right when the dumped Emacs is run. */ | |
1775 | if (dumping) | |
1776 | return; | |
1777 | ||
1778 | sigfillset (&process_fatal_action.sa_mask); | |
1779 | process_fatal_action.sa_handler = deliver_fatal_signal; | |
62a1d661 | 1780 | process_fatal_action.sa_flags = emacs_sigaction_flags (); |
4d7e6e51 PE |
1781 | |
1782 | sigfillset (&thread_fatal_action.sa_mask); | |
1783 | thread_fatal_action.sa_handler = deliver_fatal_thread_signal; | |
1784 | thread_fatal_action.sa_flags = process_fatal_action.sa_flags; | |
1785 | ||
1786 | /* SIGINT may need special treatment on MS-Windows. See | |
1787 | http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html | |
1788 | Please update the doc of kill-emacs, kill-emacs-hook, and | |
1789 | NEWS if you change this. */ | |
1790 | ||
1791 | maybe_fatal_sig (SIGHUP); | |
1792 | maybe_fatal_sig (SIGINT); | |
1793 | maybe_fatal_sig (SIGTERM); | |
1794 | ||
1795 | /* Emacs checks for write errors, so it can safely ignore SIGPIPE. | |
1796 | However, in batch mode leave SIGPIPE alone, as that causes Emacs | |
1797 | to behave more like typical batch applications do. */ | |
1798 | if (! noninteractive) | |
1799 | signal (SIGPIPE, SIG_IGN); | |
1800 | ||
1801 | sigaction (SIGQUIT, &process_fatal_action, 0); | |
1802 | sigaction (SIGILL, &thread_fatal_action, 0); | |
1803 | sigaction (SIGTRAP, &thread_fatal_action, 0); | |
1804 | ||
1805 | /* Typically SIGFPE is thread-specific and is fatal, like SIGILL. | |
1806 | But on a non-IEEE host SIGFPE can come from a trap in the Lisp | |
1807 | interpreter's floating point operations, so treat SIGFPE as an | |
1808 | arith-error if it arises in the main thread. */ | |
1809 | if (IEEE_FLOATING_POINT) | |
1810 | sigaction (SIGFPE, &thread_fatal_action, 0); | |
1811 | else | |
1812 | { | |
1813 | emacs_sigaction_init (&action, deliver_arith_signal); | |
1814 | sigaction (SIGFPE, &action, 0); | |
1815 | } | |
1816 | ||
1817 | #ifdef SIGUSR1 | |
1818 | add_user_signal (SIGUSR1, "sigusr1"); | |
1819 | #endif | |
1820 | #ifdef SIGUSR2 | |
1821 | add_user_signal (SIGUSR2, "sigusr2"); | |
1822 | #endif | |
1823 | sigaction (SIGABRT, &thread_fatal_action, 0); | |
1824 | #ifdef SIGPRE | |
1825 | sigaction (SIGPRE, &thread_fatal_action, 0); | |
1826 | #endif | |
1827 | #ifdef SIGORE | |
1828 | sigaction (SIGORE, &thread_fatal_action, 0); | |
1829 | #endif | |
1830 | #ifdef SIGUME | |
1831 | sigaction (SIGUME, &thread_fatal_action, 0); | |
1832 | #endif | |
1833 | #ifdef SIGDLK | |
1834 | sigaction (SIGDLK, &process_fatal_action, 0); | |
1835 | #endif | |
1836 | #ifdef SIGCPULIM | |
1837 | sigaction (SIGCPULIM, &process_fatal_action, 0); | |
1838 | #endif | |
1839 | #ifdef SIGIOT | |
1840 | sigaction (SIGIOT, &thread_fatal_action, 0); | |
1841 | #endif | |
1842 | #ifdef SIGEMT | |
1843 | sigaction (SIGEMT, &thread_fatal_action, 0); | |
1844 | #endif | |
1845 | #ifdef SIGBUS | |
1846 | sigaction (SIGBUS, &thread_fatal_action, 0); | |
1847 | #endif | |
1848 | sigaction (SIGSEGV, &thread_fatal_action, 0); | |
1849 | #ifdef SIGSYS | |
1850 | sigaction (SIGSYS, &thread_fatal_action, 0); | |
1851 | #endif | |
1852 | sigaction (SIGTERM, &process_fatal_action, 0); | |
1853 | #ifdef SIGPROF | |
d89460ed | 1854 | signal (SIGPROF, SIG_IGN); |
4d7e6e51 PE |
1855 | #endif |
1856 | #ifdef SIGVTALRM | |
1857 | sigaction (SIGVTALRM, &process_fatal_action, 0); | |
1858 | #endif | |
1859 | #ifdef SIGXCPU | |
1860 | sigaction (SIGXCPU, &process_fatal_action, 0); | |
1861 | #endif | |
1862 | #ifdef SIGXFSZ | |
1863 | sigaction (SIGXFSZ, &process_fatal_action, 0); | |
1864 | #endif | |
1865 | ||
1866 | #ifdef SIGDANGER | |
1867 | /* This just means available memory is getting low. */ | |
1868 | emacs_sigaction_init (&action, deliver_danger_signal); | |
1869 | sigaction (SIGDANGER, &action, 0); | |
1870 | #endif | |
1871 | ||
1872 | /* AIX-specific signals. */ | |
1873 | #ifdef SIGGRANT | |
1874 | sigaction (SIGGRANT, &process_fatal_action, 0); | |
1875 | #endif | |
1876 | #ifdef SIGMIGRATE | |
1877 | sigaction (SIGMIGRATE, &process_fatal_action, 0); | |
1878 | #endif | |
1879 | #ifdef SIGMSG | |
1880 | sigaction (SIGMSG, &process_fatal_action, 0); | |
1881 | #endif | |
1882 | #ifdef SIGRETRACT | |
1883 | sigaction (SIGRETRACT, &process_fatal_action, 0); | |
1884 | #endif | |
1885 | #ifdef SIGSAK | |
1886 | sigaction (SIGSAK, &process_fatal_action, 0); | |
1887 | #endif | |
1888 | #ifdef SIGSOUND | |
1889 | sigaction (SIGSOUND, &process_fatal_action, 0); | |
1890 | #endif | |
1891 | #ifdef SIGTALRM | |
1892 | sigaction (SIGTALRM, &thread_fatal_action, 0); | |
1893 | #endif | |
ca9c0567 PE |
1894 | } |
1895 | \f | |
9927a7b1 | 1896 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
1897 | #ifdef random |
1898 | #define HAVE_RANDOM | |
1899 | #endif | |
1900 | #endif | |
1901 | ||
1902 | /* Figure out how many bits the system's random number generator uses. | |
1903 | `random' and `lrand48' are assumed to return 31 usable bits. | |
1904 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
1905 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
1906 | ||
1907 | #ifndef RAND_BITS | |
1908 | # ifdef HAVE_RANDOM | |
1909 | # define RAND_BITS 31 | |
1910 | # else /* !HAVE_RANDOM */ | |
1911 | # ifdef HAVE_LRAND48 | |
1912 | # define RAND_BITS 31 | |
1913 | # define random lrand48 | |
1914 | # else /* !HAVE_LRAND48 */ | |
1915 | # define RAND_BITS 15 | |
1916 | # if RAND_MAX == 32767 | |
1917 | # define random rand | |
1918 | # else /* RAND_MAX != 32767 */ | |
1919 | # if RAND_MAX == 2147483647 | |
1920 | # define random() (rand () >> 16) | |
1921 | # else /* RAND_MAX != 2147483647 */ | |
1922 | # ifdef USG | |
1923 | # define random rand | |
1924 | # else | |
1925 | # define random() (rand () >> 16) | |
2a633456 | 1926 | # endif /* !USG */ |
4bb8c8b7 KH |
1927 | # endif /* RAND_MAX != 2147483647 */ |
1928 | # endif /* RAND_MAX != 32767 */ | |
1929 | # endif /* !HAVE_LRAND48 */ | |
1930 | # endif /* !HAVE_RANDOM */ | |
1931 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 1932 | |
4bb8c8b7 | 1933 | void |
0e23ef9d | 1934 | seed_random (void *seed, ptrdiff_t seed_size) |
86a5659e | 1935 | { |
33634217 | 1936 | #if defined HAVE_RANDOM || ! defined HAVE_LRAND48 |
0e23ef9d PE |
1937 | unsigned int arg = 0; |
1938 | #else | |
1939 | long int arg = 0; | |
1940 | #endif | |
1941 | unsigned char *argp = (unsigned char *) &arg; | |
1942 | unsigned char *seedp = seed; | |
1943 | ptrdiff_t i; | |
1944 | for (i = 0; i < seed_size; i++) | |
1945 | argp[i % sizeof arg] ^= seedp[i]; | |
4bb8c8b7 | 1946 | #ifdef HAVE_RANDOM |
0e23ef9d | 1947 | srandom (arg); |
f8b53a82 | 1948 | #else |
4bb8c8b7 | 1949 | # ifdef HAVE_LRAND48 |
76425a49 | 1950 | srand48 (arg); |
4bb8c8b7 | 1951 | # else |
0e23ef9d | 1952 | srand (arg); |
4bb8c8b7 | 1953 | # endif |
2e46c7c6 | 1954 | #endif |
86a5659e JB |
1955 | } |
1956 | ||
0e23ef9d PE |
1957 | void |
1958 | init_random (void) | |
1959 | { | |
1960 | EMACS_TIME t = current_emacs_time (); | |
1961 | uintmax_t v = getpid () ^ EMACS_SECS (t) ^ EMACS_NSECS (t); | |
1962 | seed_random (&v, sizeof v); | |
1963 | } | |
1964 | ||
4bb8c8b7 | 1965 | /* |
d8ed26bd PE |
1966 | * Return a nonnegative random integer out of whatever we've got. |
1967 | * It contains enough bits to make a random (signed) Emacs fixnum. | |
4bb8c8b7 KH |
1968 | * This suffices even for a 64-bit architecture with a 15-bit rand. |
1969 | */ | |
ede49d71 | 1970 | EMACS_INT |
971de7fb | 1971 | get_random (void) |
4bb8c8b7 | 1972 | { |
ede49d71 PE |
1973 | EMACS_UINT val = 0; |
1974 | int i; | |
d8ed26bd PE |
1975 | for (i = 0; i < (FIXNUM_BITS + RAND_BITS - 1) / RAND_BITS; i++) |
1976 | val = (random () ^ (val << RAND_BITS) | |
1977 | ^ (val >> (BITS_PER_EMACS_INT - RAND_BITS))); | |
1978 | val ^= val >> (BITS_PER_EMACS_INT - FIXNUM_BITS); | |
1979 | return val & INTMASK; | |
4bb8c8b7 | 1980 | } |
7088d1ca | 1981 | |
55e5faa1 PE |
1982 | #ifndef HAVE_SNPRINTF |
1983 | /* Approximate snprintf as best we can on ancient hosts that lack it. */ | |
1984 | int | |
1985 | snprintf (char *buf, size_t bufsize, char const *format, ...) | |
1986 | { | |
1987 | ptrdiff_t size = min (bufsize, PTRDIFF_MAX); | |
1988 | ptrdiff_t nbytes = size - 1; | |
1989 | va_list ap; | |
1990 | ||
1991 | if (size) | |
1992 | { | |
1993 | va_start (ap, format); | |
1994 | nbytes = doprnt (buf, size, format, 0, ap); | |
1995 | va_end (ap); | |
1996 | } | |
1997 | ||
1998 | if (nbytes == size - 1) | |
1999 | { | |
2000 | /* Calculate the length of the string that would have been created | |
2001 | had the buffer been large enough. */ | |
2002 | char stackbuf[4000]; | |
2003 | char *b = stackbuf; | |
2004 | ptrdiff_t bsize = sizeof stackbuf; | |
2005 | va_start (ap, format); | |
2006 | nbytes = evxprintf (&b, &bsize, stackbuf, -1, format, ap); | |
2007 | va_end (ap); | |
2008 | if (b != stackbuf) | |
2009 | xfree (b); | |
2010 | } | |
2011 | ||
2012 | if (INT_MAX < nbytes) | |
2013 | { | |
31bed486 | 2014 | #ifdef EOVERFLOW |
55e5faa1 | 2015 | errno = EOVERFLOW; |
31bed486 EZ |
2016 | #else |
2017 | errno = EDOM; | |
2018 | #endif | |
55e5faa1 PE |
2019 | return -1; |
2020 | } | |
2021 | return nbytes; | |
2022 | } | |
2023 | #endif | |
86a5659e | 2024 | \f |
cf29dd84 PE |
2025 | /* If a backtrace is available, output the top lines of it to stderr. |
2026 | Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines. | |
2027 | This function may be called from a signal handler, so it should | |
2028 | not invoke async-unsafe functions like malloc. */ | |
2029 | void | |
2030 | emacs_backtrace (int backtrace_limit) | |
2031 | { | |
4d7e6e51 | 2032 | void *main_backtrace_buffer[BACKTRACE_LIMIT_MAX + 1]; |
cf29dd84 | 2033 | int bounded_limit = min (backtrace_limit, BACKTRACE_LIMIT_MAX); |
4d7e6e51 PE |
2034 | void *buffer; |
2035 | int npointers; | |
2036 | ||
2037 | if (thread_backtrace_npointers) | |
2038 | { | |
2039 | buffer = thread_backtrace_buffer; | |
2040 | npointers = thread_backtrace_npointers; | |
2041 | } | |
2042 | else | |
2043 | { | |
2044 | buffer = main_backtrace_buffer; | |
2045 | npointers = backtrace (buffer, bounded_limit + 1); | |
2046 | } | |
2047 | ||
cf29dd84 | 2048 | if (npointers) |
4d7e6e51 PE |
2049 | { |
2050 | ignore_value (write (STDERR_FILENO, "\nBacktrace:\n", 12)); | |
2051 | backtrace_symbols_fd (buffer, npointers, STDERR_FILENO); | |
2052 | if (bounded_limit < npointers) | |
2053 | ignore_value (write (STDERR_FILENO, "...\n", 4)); | |
2054 | } | |
cf29dd84 PE |
2055 | } |
2056 | \f | |
1088b922 | 2057 | #ifndef HAVE_NTGUI |
1088b922 PE |
2058 | void |
2059 | emacs_abort (void) | |
2060 | { | |
4d7e6e51 | 2061 | terminate_due_to_signal (SIGABRT, 10); |
1088b922 PE |
2062 | } |
2063 | #endif | |
2064 | ||
86a5659e | 2065 | int |
971de7fb | 2066 | emacs_open (const char *path, int oflag, int mode) |
86a5659e JB |
2067 | { |
2068 | register int rtnval; | |
68c45bf0 | 2069 | |
86a5659e | 2070 | while ((rtnval = open (path, oflag, mode)) == -1 |
275464e7 SM |
2071 | && (errno == EINTR)) |
2072 | QUIT; | |
86a5659e JB |
2073 | return (rtnval); |
2074 | } | |
2075 | ||
dfcf069d | 2076 | int |
971de7fb | 2077 | emacs_close (int fd) |
86a5659e | 2078 | { |
fe111daf | 2079 | int did_retry = 0; |
86a5659e JB |
2080 | register int rtnval; |
2081 | ||
2082 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
2083 | && (errno == EINTR)) |
2084 | did_retry = 1; | |
2085 | ||
2086 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
2087 | file descriptor. If it did the second close will fail with | |
2088 | errno = EBADF. That means we have succeeded. */ | |
2089 | if (rtnval == -1 && did_retry && errno == EBADF) | |
2090 | return 0; | |
2091 | ||
86a5659e JB |
2092 | return rtnval; |
2093 | } | |
2094 | ||
1963a2e0 PE |
2095 | /* Maximum number of bytes to read or write in a single system call. |
2096 | This works around a serious bug in Linux kernels before 2.6.16; see | |
2097 | <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>. | |
2098 | It's likely to work around similar bugs in other operating systems, so do it | |
2099 | on all platforms. Round INT_MAX down to a page size, with the conservative | |
2100 | assumption that page sizes are at most 2**18 bytes (any kernel with a | |
2101 | page size larger than that shouldn't have the bug). */ | |
2102 | #ifndef MAX_RW_COUNT | |
2103 | #define MAX_RW_COUNT (INT_MAX >> 18 << 18) | |
2104 | #endif | |
2105 | ||
273a5f82 PE |
2106 | /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted. |
2107 | Return the number of bytes read, which might be less than NBYTE. | |
2108 | On error, set errno and return -1. */ | |
d311d28c PE |
2109 | ptrdiff_t |
2110 | emacs_read (int fildes, char *buf, ptrdiff_t nbyte) | |
86a5659e | 2111 | { |
8a2cbd72 | 2112 | register ssize_t rtnval; |
177c0ea7 | 2113 | |
71b41406 PE |
2114 | /* There is no need to check against MAX_RW_COUNT, since no caller ever |
2115 | passes a size that large to emacs_read. */ | |
2116 | ||
2117 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
275464e7 SM |
2118 | && (errno == EINTR)) |
2119 | QUIT; | |
86a5659e JB |
2120 | return (rtnval); |
2121 | } | |
2122 | ||
273a5f82 PE |
2123 | /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted |
2124 | or if a partial write occurs. Return the number of bytes written, setting | |
2125 | errno if this is less than NBYTE. */ | |
d311d28c PE |
2126 | ptrdiff_t |
2127 | emacs_write (int fildes, const char *buf, ptrdiff_t nbyte) | |
86a5659e | 2128 | { |
273a5f82 | 2129 | ssize_t rtnval; |
d311d28c | 2130 | ptrdiff_t bytes_written; |
28272684 | 2131 | |
b95520f5 BF |
2132 | bytes_written = 0; |
2133 | ||
273a5f82 | 2134 | while (nbyte > 0) |
b95520f5 | 2135 | { |
1963a2e0 | 2136 | rtnval = write (fildes, buf, min (nbyte, MAX_RW_COUNT)); |
b95520f5 | 2137 | |
273a5f82 | 2138 | if (rtnval < 0) |
b95520f5 BF |
2139 | { |
2140 | if (errno == EINTR) | |
77220eeb | 2141 | { |
77220eeb SM |
2142 | /* I originally used `QUIT' but that might causes files to |
2143 | be truncated if you hit C-g in the middle of it. --Stef */ | |
4d7e6e51 PE |
2144 | if (pending_signals) |
2145 | process_pending_signals (); | |
77220eeb SM |
2146 | continue; |
2147 | } | |
b95520f5 | 2148 | else |
273a5f82 | 2149 | break; |
b95520f5 BF |
2150 | } |
2151 | ||
2152 | buf += rtnval; | |
2153 | nbyte -= rtnval; | |
2154 | bytes_written += rtnval; | |
2155 | } | |
273a5f82 | 2156 | |
b95520f5 | 2157 | return (bytes_written); |
86a5659e | 2158 | } |
d1fdcab7 PE |
2159 | |
2160 | static struct allocator const emacs_norealloc_allocator = | |
2161 | { xmalloc, NULL, xfree, memory_full }; | |
2162 | ||
2163 | /* Get the symbolic link value of FILENAME. Return a pointer to a | |
2164 | NUL-terminated string. If readlink fails, return NULL and set | |
2165 | errno. If the value fits in INITIAL_BUF, return INITIAL_BUF. | |
2166 | Otherwise, allocate memory and return a pointer to that memory. If | |
2167 | memory allocation fails, diagnose and fail without returning. If | |
2168 | successful, store the length of the symbolic link into *LINKLEN. */ | |
2169 | char * | |
2170 | emacs_readlink (char const *filename, char initial_buf[READLINK_BUFSIZE]) | |
2171 | { | |
2172 | return careadlinkat (AT_FDCWD, filename, initial_buf, READLINK_BUFSIZE, | |
2173 | &emacs_norealloc_allocator, careadlinkatcwd); | |
2174 | } | |
86a5659e JB |
2175 | \f |
2176 | #ifdef USG | |
2177 | /* | |
2178 | * All of the following are for USG. | |
2179 | * | |
2180 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2181 | * that the user program has elected to catch. Thus the system call | |
2182 | * must be retried in these cases. To handle this without massive | |
2183 | * changes in the source code, we remap the standard system call names | |
2184 | * to names for our own functions in sysdep.c that do the system call | |
2185 | * with retries. Actually, for portability reasons, it is good | |
2186 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2187 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2188 | * adds an extra level of function call overhead but it is almost |
2189 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2190 | */ | |
2191 | ||
86a5659e JB |
2192 | /* |
2193 | * Warning, this function may not duplicate 4.2 action properly | |
2194 | * under error conditions. | |
2195 | */ | |
2196 | ||
1db4583a | 2197 | #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD) |
15dfd3d9 | 2198 | |
86a5659e JB |
2199 | #ifndef MAXPATHLEN |
2200 | /* In 4.1, param.h fails to define this. */ | |
2201 | #define MAXPATHLEN 1024 | |
2202 | #endif | |
2203 | ||
86a5659e | 2204 | char * |
cf84bb53 | 2205 | getwd (char *pathname) |
86a5659e JB |
2206 | { |
2207 | char *npath, *spath; | |
cf84bb53 | 2208 | extern char *getcwd (char *, size_t); |
86a5659e | 2209 | |
4d7e6e51 | 2210 | block_input (); /* getcwd uses malloc */ |
86a5659e | 2211 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 2212 | if (spath == 0) |
18b6bc73 | 2213 | { |
4d7e6e51 | 2214 | unblock_input (); |
18b6bc73 GM |
2215 | return spath; |
2216 | } | |
86a5659e JB |
2217 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
2218 | up to first slash. Should be harmless on other systems. */ | |
2219 | while (*npath && *npath != '/') | |
2220 | npath++; | |
2221 | strcpy (pathname, npath); | |
2222 | free (spath); /* getcwd uses malloc */ | |
4d7e6e51 | 2223 | unblock_input (); |
86a5659e JB |
2224 | return pathname; |
2225 | } | |
2226 | ||
1db4583a | 2227 | #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */ |
86a5659e JB |
2228 | #endif /* USG */ |
2229 | \f | |
86a5659e JB |
2230 | /* Directory routines for systems that don't have them. */ |
2231 | ||
1c97e857 | 2232 | #ifdef HAVE_DIRENT_H |
86a5659e JB |
2233 | |
2234 | #include <dirent.h> | |
2235 | ||
9d9a7716 | 2236 | #if !defined (HAVE_CLOSEDIR) |
cfdc57af | 2237 | |
86a5659e | 2238 | int |
9d9a7716 | 2239 | closedir (DIR *dirp /* stream from opendir */) |
86a5659e | 2240 | { |
cfdc57af RS |
2241 | int rtnval; |
2242 | ||
68c45bf0 | 2243 | rtnval = emacs_close (dirp->dd_fd); |
98c6f1e3 | 2244 | xfree (dirp); |
cfdc57af RS |
2245 | |
2246 | return rtnval; | |
86a5659e | 2247 | } |
9d9a7716 | 2248 | #endif /* not HAVE_CLOSEDIR */ |
1c97e857 | 2249 | #endif /* HAVE_DIRENT_H */ |
86a5659e | 2250 | |
23524fb9 | 2251 | \f |
d35af63c PE |
2252 | /* Return a struct timeval that is roughly equivalent to T. |
2253 | Use the least timeval not less than T. | |
2254 | Return an extremal value if the result would overflow. */ | |
2255 | struct timeval | |
2256 | make_timeval (EMACS_TIME t) | |
2257 | { | |
2258 | struct timeval tv; | |
2259 | tv.tv_sec = t.tv_sec; | |
2260 | tv.tv_usec = t.tv_nsec / 1000; | |
2261 | ||
2262 | if (t.tv_nsec % 1000 != 0) | |
2263 | { | |
2264 | if (tv.tv_usec < 999999) | |
2265 | tv.tv_usec++; | |
2266 | else if (tv.tv_sec < TYPE_MAXIMUM (time_t)) | |
2267 | { | |
2268 | tv.tv_sec++; | |
2269 | tv.tv_usec = 0; | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | return tv; | |
2274 | } | |
2275 | ||
2276 | /* Set the access and modification time stamps of FD (a.k.a. FILE) to be | |
2277 | ATIME and MTIME, respectively. | |
2278 | FD must be either negative -- in which case it is ignored -- | |
2279 | or a file descriptor that is open on FILE. | |
2280 | If FD is nonnegative, then FILE can be NULL. */ | |
53ea491a | 2281 | int |
d35af63c PE |
2282 | set_file_times (int fd, const char *filename, |
2283 | EMACS_TIME atime, EMACS_TIME mtime) | |
2284 | { | |
2285 | struct timespec timespec[2]; | |
2286 | timespec[0] = atime; | |
2287 | timespec[1] = mtime; | |
2288 | return fdutimens (fd, filename, timespec); | |
53ea491a KH |
2289 | } |
2290 | \f | |
aa1ba90e PE |
2291 | /* Like strsignal, except async-signal-safe, and this function typically |
2292 | returns a string in the C locale rather than the current locale. */ | |
2293 | char const * | |
2294 | safe_strsignal (int code) | |
68c45bf0 | 2295 | { |
aa1ba90e | 2296 | char const *signame = 0; |
68c45bf0 | 2297 | |
c622b48f | 2298 | if (0 <= code && code < sys_siglist_entries) |
aa1ba90e PE |
2299 | signame = sys_siglist[code]; |
2300 | if (! signame) | |
2301 | signame = "Unknown signal"; | |
c4ea52a6 | 2302 | |
68c45bf0 PE |
2303 | return signame; |
2304 | } | |
d888760c | 2305 | \f |
a7ebc409 | 2306 | #ifndef DOS_NT |
d888760c | 2307 | /* For make-serial-process */ |
cf84bb53 JB |
2308 | int |
2309 | serial_open (char *port) | |
d888760c GM |
2310 | { |
2311 | int fd = -1; | |
2312 | ||
2313 | fd = emacs_open ((char*) port, | |
2314 | O_RDWR | |
2315 | #ifdef O_NONBLOCK | |
2316 | | O_NONBLOCK | |
2317 | #else | |
2318 | | O_NDELAY | |
2319 | #endif | |
2320 | #ifdef O_NOCTTY | |
2321 | | O_NOCTTY | |
2322 | #endif | |
2323 | , 0); | |
2324 | if (fd < 0) | |
2325 | { | |
2326 | error ("Could not open %s: %s", | |
2327 | port, emacs_strerror (errno)); | |
2328 | } | |
2329 | #ifdef TIOCEXCL | |
2330 | ioctl (fd, TIOCEXCL, (char *) 0); | |
2331 | #endif | |
2332 | ||
2333 | return fd; | |
2334 | } | |
759d3f32 SM |
2335 | |
2336 | #if !defined (HAVE_CFMAKERAW) | |
2337 | /* Workaround for targets which are missing cfmakeraw. */ | |
2338 | /* Pasted from man page. */ | |
cf84bb53 JB |
2339 | static void |
2340 | cfmakeraw (struct termios *termios_p) | |
759d3f32 SM |
2341 | { |
2342 | termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
2343 | termios_p->c_oflag &= ~OPOST; | |
2344 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
2345 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
2346 | termios_p->c_cflag |= CS8; | |
2347 | } | |
2348 | #endif /* !defined (HAVE_CFMAKERAW */ | |
2349 | ||
2350 | #if !defined (HAVE_CFSETSPEED) | |
2351 | /* Workaround for targets which are missing cfsetspeed. */ | |
cf84bb53 JB |
2352 | static int |
2353 | cfsetspeed (struct termios *termios_p, speed_t vitesse) | |
759d3f32 SM |
2354 | { |
2355 | return (cfsetispeed (termios_p, vitesse) | |
2356 | + cfsetospeed (termios_p, vitesse)); | |
2357 | } | |
2358 | #endif | |
2359 | ||
d888760c GM |
2360 | /* For serial-process-configure */ |
2361 | void | |
2362 | serial_configure (struct Lisp_Process *p, | |
cf84bb53 | 2363 | Lisp_Object contact) |
d888760c GM |
2364 | { |
2365 | Lisp_Object childp2 = Qnil; | |
2366 | Lisp_Object tem = Qnil; | |
2367 | struct termios attr; | |
2368 | int err = -1; | |
2369 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
2370 | ||
4d2b044c | 2371 | childp2 = Fcopy_sequence (p->childp); |
d888760c GM |
2372 | |
2373 | /* Read port attributes and prepare default configuration. */ | |
2374 | err = tcgetattr (p->outfd, &attr); | |
2375 | if (err != 0) | |
2376 | error ("tcgetattr() failed: %s", emacs_strerror (errno)); | |
2377 | cfmakeraw (&attr); | |
2378 | #if defined (CLOCAL) | |
2379 | attr.c_cflag |= CLOCAL; | |
2380 | #endif | |
2381 | #if defined (CREAD) | |
6d1921be | 2382 | attr.c_cflag |= CREAD; |
d888760c GM |
2383 | #endif |
2384 | ||
2385 | /* Configure speed. */ | |
2386 | if (!NILP (Fplist_member (contact, QCspeed))) | |
2387 | tem = Fplist_get (contact, QCspeed); | |
2388 | else | |
4d2b044c | 2389 | tem = Fplist_get (p->childp, QCspeed); |
d888760c GM |
2390 | CHECK_NUMBER (tem); |
2391 | err = cfsetspeed (&attr, XINT (tem)); | |
2392 | if (err != 0) | |
c2982e87 | 2393 | error ("cfsetspeed(%"pI"d) failed: %s", XINT (tem), |
5fdb398c | 2394 | emacs_strerror (errno)); |
d888760c GM |
2395 | childp2 = Fplist_put (childp2, QCspeed, tem); |
2396 | ||
2397 | /* Configure bytesize. */ | |
2398 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
2399 | tem = Fplist_get (contact, QCbytesize); | |
2400 | else | |
4d2b044c | 2401 | tem = Fplist_get (p->childp, QCbytesize); |
d888760c GM |
2402 | if (NILP (tem)) |
2403 | tem = make_number (8); | |
2404 | CHECK_NUMBER (tem); | |
2405 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
2406 | error (":bytesize must be nil (8), 7, or 8"); | |
cf84bb53 | 2407 | summary[0] = XINT (tem) + '0'; |
d888760c GM |
2408 | #if defined (CSIZE) && defined (CS7) && defined (CS8) |
2409 | attr.c_cflag &= ~CSIZE; | |
2410 | attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8); | |
2411 | #else | |
16bad4dd | 2412 | /* Don't error on bytesize 8, which should be set by cfmakeraw. */ |
d888760c GM |
2413 | if (XINT (tem) != 8) |
2414 | error ("Bytesize cannot be changed"); | |
2415 | #endif | |
2416 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
2417 | ||
2418 | /* Configure parity. */ | |
2419 | if (!NILP (Fplist_member (contact, QCparity))) | |
2420 | tem = Fplist_get (contact, QCparity); | |
2421 | else | |
4d2b044c | 2422 | tem = Fplist_get (p->childp, QCparity); |
d888760c GM |
2423 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) |
2424 | error (":parity must be nil (no parity), `even', or `odd'"); | |
2425 | #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK) | |
2426 | attr.c_cflag &= ~(PARENB | PARODD); | |
2427 | attr.c_iflag &= ~(IGNPAR | INPCK); | |
2428 | if (NILP (tem)) | |
2429 | { | |
2430 | summary[1] = 'N'; | |
2431 | } | |
2432 | else if (EQ (tem, Qeven)) | |
2433 | { | |
2434 | summary[1] = 'E'; | |
2435 | attr.c_cflag |= PARENB; | |
2436 | attr.c_iflag |= (IGNPAR | INPCK); | |
2437 | } | |
2438 | else if (EQ (tem, Qodd)) | |
2439 | { | |
2440 | summary[1] = 'O'; | |
2441 | attr.c_cflag |= (PARENB | PARODD); | |
2442 | attr.c_iflag |= (IGNPAR | INPCK); | |
2443 | } | |
2444 | #else | |
16bad4dd | 2445 | /* Don't error on no parity, which should be set by cfmakeraw. */ |
d888760c GM |
2446 | if (!NILP (tem)) |
2447 | error ("Parity cannot be configured"); | |
2448 | #endif | |
2449 | childp2 = Fplist_put (childp2, QCparity, tem); | |
2450 | ||
2451 | /* Configure stopbits. */ | |
2452 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
2453 | tem = Fplist_get (contact, QCstopbits); | |
2454 | else | |
4d2b044c | 2455 | tem = Fplist_get (p->childp, QCstopbits); |
d888760c GM |
2456 | if (NILP (tem)) |
2457 | tem = make_number (1); | |
2458 | CHECK_NUMBER (tem); | |
2459 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
2460 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
2461 | summary[2] = XINT (tem) + '0'; | |
2462 | #if defined (CSTOPB) | |
2463 | attr.c_cflag &= ~CSTOPB; | |
2464 | if (XINT (tem) == 2) | |
2465 | attr.c_cflag |= CSTOPB; | |
2466 | #else | |
16bad4dd | 2467 | /* Don't error on 1 stopbit, which should be set by cfmakeraw. */ |
d888760c GM |
2468 | if (XINT (tem) != 1) |
2469 | error ("Stopbits cannot be configured"); | |
2470 | #endif | |
2471 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
2472 | ||
2473 | /* Configure flowcontrol. */ | |
2474 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
2475 | tem = Fplist_get (contact, QCflowcontrol); | |
2476 | else | |
4d2b044c | 2477 | tem = Fplist_get (p->childp, QCflowcontrol); |
d888760c GM |
2478 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) |
2479 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
2480 | #if defined (CRTSCTS) | |
2481 | attr.c_cflag &= ~CRTSCTS; | |
2482 | #endif | |
2483 | #if defined (CNEW_RTSCTS) | |
2484 | attr.c_cflag &= ~CNEW_RTSCTS; | |
2485 | #endif | |
2486 | #if defined (IXON) && defined (IXOFF) | |
2487 | attr.c_iflag &= ~(IXON | IXOFF); | |
2488 | #endif | |
2489 | if (NILP (tem)) | |
2490 | { | |
2491 | /* Already configured. */ | |
2492 | } | |
2493 | else if (EQ (tem, Qhw)) | |
2494 | { | |
2495 | #if defined (CRTSCTS) | |
2496 | attr.c_cflag |= CRTSCTS; | |
2497 | #elif defined (CNEW_RTSCTS) | |
2498 | attr.c_cflag |= CNEW_RTSCTS; | |
2499 | #else | |
2500 | error ("Hardware flowcontrol (RTS/CTS) not supported"); | |
2501 | #endif | |
2502 | } | |
2503 | else if (EQ (tem, Qsw)) | |
2504 | { | |
2505 | #if defined (IXON) && defined (IXOFF) | |
2506 | attr.c_iflag |= (IXON | IXOFF); | |
2507 | #else | |
2508 | error ("Software flowcontrol (XON/XOFF) not supported"); | |
2509 | #endif | |
2510 | } | |
2511 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
2512 | ||
2513 | /* Activate configuration. */ | |
2514 | err = tcsetattr (p->outfd, TCSANOW, &attr); | |
2515 | if (err != 0) | |
2516 | error ("tcsetattr() failed: %s", emacs_strerror (errno)); | |
2517 | ||
2518 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6a09a33b | 2519 | pset_childp (p, childp2); |
d888760c | 2520 | } |
a7ebc409 | 2521 | #endif /* not DOS_NT */ |
06e111a6 DN |
2522 | \f |
2523 | /* System depended enumeration of and access to system processes a-la ps(1). */ | |
2524 | ||
2525 | #ifdef HAVE_PROCFS | |
2526 | ||
2527 | /* Process enumeration and access via /proc. */ | |
2528 | ||
2529 | Lisp_Object | |
971de7fb | 2530 | list_system_processes (void) |
06e111a6 DN |
2531 | { |
2532 | Lisp_Object procdir, match, proclist, next; | |
2533 | struct gcpro gcpro1, gcpro2; | |
2534 | register Lisp_Object tail; | |
2535 | ||
2536 | GCPRO2 (procdir, match); | |
2537 | /* For every process on the system, there's a directory in the | |
2538 | "/proc" pseudo-directory whose name is the numeric ID of that | |
2539 | process. */ | |
2540 | procdir = build_string ("/proc"); | |
2541 | match = build_string ("[0-9]+"); | |
86ec63ba | 2542 | proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil); |
06e111a6 DN |
2543 | |
2544 | /* `proclist' gives process IDs as strings. Destructively convert | |
2545 | each string into a number. */ | |
2546 | for (tail = proclist; CONSP (tail); tail = next) | |
2547 | { | |
2548 | next = XCDR (tail); | |
2549 | XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil)); | |
2550 | } | |
2551 | UNGCPRO; | |
2552 | ||
2553 | /* directory_files_internal returns the files in reverse order; undo | |
2554 | that. */ | |
2555 | proclist = Fnreverse (proclist); | |
2556 | return proclist; | |
2557 | } | |
2558 | ||
f01769f9 | 2559 | #elif defined BSD_SYSTEM |
b91b7e4d EW |
2560 | |
2561 | Lisp_Object | |
5790543d | 2562 | list_system_processes (void) |
b91b7e4d | 2563 | { |
f3047c75 | 2564 | #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__ |
f01769f9 LL |
2565 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL}; |
2566 | #else | |
b91b7e4d | 2567 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PROC}; |
f01769f9 | 2568 | #endif |
b91b7e4d EW |
2569 | size_t len; |
2570 | struct kinfo_proc *procs; | |
2571 | size_t i; | |
2572 | ||
2573 | struct gcpro gcpro1; | |
2574 | Lisp_Object proclist = Qnil; | |
2575 | ||
2576 | if (sysctl (mib, 3, NULL, &len, NULL, 0) != 0) | |
2577 | return proclist; | |
5790543d | 2578 | |
b91b7e4d EW |
2579 | procs = xmalloc (len); |
2580 | if (sysctl (mib, 3, procs, &len, NULL, 0) != 0) | |
2581 | { | |
2582 | xfree (procs); | |
2583 | return proclist; | |
2584 | } | |
5790543d | 2585 | |
b91b7e4d EW |
2586 | GCPRO1 (proclist); |
2587 | len /= sizeof (struct kinfo_proc); | |
2588 | for (i = 0; i < len; i++) | |
f01769f9 | 2589 | { |
f3047c75 | 2590 | #if defined DARWIN_OS || defined __NetBSD__ |
f01769f9 | 2591 | proclist = Fcons (make_fixnum_or_float (procs[i].kp_proc.p_pid), proclist); |
7dca65a4 PE |
2592 | #elif defined __OpenBSD__ |
2593 | proclist = Fcons (make_fixnum_or_float (procs[i].p_pid), proclist); | |
f01769f9 LL |
2594 | #else |
2595 | proclist = Fcons (make_fixnum_or_float (procs[i].ki_pid), proclist); | |
2596 | #endif | |
2597 | } | |
b91b7e4d | 2598 | UNGCPRO; |
5790543d | 2599 | |
b91b7e4d EW |
2600 | xfree (procs); |
2601 | ||
2602 | return proclist; | |
2603 | } | |
2604 | ||
f8d23104 DN |
2605 | /* The WINDOWSNT implementation is in w32.c. |
2606 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 2607 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
2608 | |
2609 | Lisp_Object | |
cf84bb53 | 2610 | list_system_processes (void) |
06e111a6 DN |
2611 | { |
2612 | return Qnil; | |
2613 | } | |
91c85b70 EZ |
2614 | |
2615 | #endif /* !defined (WINDOWSNT) */ | |
06e111a6 DN |
2616 | |
2617 | #ifdef GNU_LINUX | |
d35af63c PE |
2618 | static EMACS_TIME |
2619 | time_from_jiffies (unsigned long long tval, long hz) | |
2620 | { | |
2621 | unsigned long long s = tval / hz; | |
2622 | unsigned long long frac = tval % hz; | |
2623 | int ns; | |
d35af63c PE |
2624 | |
2625 | if (TYPE_MAXIMUM (time_t) < s) | |
2626 | time_overflow (); | |
2627 | if (LONG_MAX - 1 <= ULLONG_MAX / EMACS_TIME_RESOLUTION | |
2628 | || frac <= ULLONG_MAX / EMACS_TIME_RESOLUTION) | |
2629 | ns = frac * EMACS_TIME_RESOLUTION / hz; | |
06e111a6 | 2630 | else |
d35af63c PE |
2631 | { |
2632 | /* This is reachable only in the unlikely case that HZ * HZ | |
2633 | exceeds ULLONG_MAX. It calculates an approximation that is | |
2634 | guaranteed to be in range. */ | |
2635 | long hz_per_ns = (hz / EMACS_TIME_RESOLUTION | |
2636 | + (hz % EMACS_TIME_RESOLUTION != 0)); | |
2637 | ns = frac / hz_per_ns; | |
2638 | } | |
2639 | ||
e9a9ae03 | 2640 | return make_emacs_time (s, ns); |
06e111a6 DN |
2641 | } |
2642 | ||
2643 | static Lisp_Object | |
2644 | ltime_from_jiffies (unsigned long long tval, long hz) | |
2645 | { | |
d35af63c PE |
2646 | EMACS_TIME t = time_from_jiffies (tval, hz); |
2647 | return make_lisp_time (t); | |
06e111a6 DN |
2648 | } |
2649 | ||
d35af63c PE |
2650 | static EMACS_TIME |
2651 | get_up_time (void) | |
06e111a6 DN |
2652 | { |
2653 | FILE *fup; | |
e9a9ae03 | 2654 | EMACS_TIME up = make_emacs_time (0, 0); |
06e111a6 | 2655 | |
4d7e6e51 | 2656 | block_input (); |
06e111a6 DN |
2657 | fup = fopen ("/proc/uptime", "r"); |
2658 | ||
2659 | if (fup) | |
2660 | { | |
d35af63c PE |
2661 | unsigned long long upsec, upfrac, idlesec, idlefrac; |
2662 | int upfrac_start, upfrac_end, idlefrac_start, idlefrac_end; | |
06e111a6 | 2663 | |
d35af63c PE |
2664 | if (fscanf (fup, "%llu.%n%llu%n %llu.%n%llu%n", |
2665 | &upsec, &upfrac_start, &upfrac, &upfrac_end, | |
2666 | &idlesec, &idlefrac_start, &idlefrac, &idlefrac_end) | |
2667 | == 4) | |
06e111a6 | 2668 | { |
d35af63c PE |
2669 | if (TYPE_MAXIMUM (time_t) < upsec) |
2670 | { | |
2671 | upsec = TYPE_MAXIMUM (time_t); | |
2672 | upfrac = EMACS_TIME_RESOLUTION - 1; | |
2673 | } | |
2674 | else | |
2675 | { | |
2676 | int upfraclen = upfrac_end - upfrac_start; | |
2677 | for (; upfraclen < LOG10_EMACS_TIME_RESOLUTION; upfraclen++) | |
2678 | upfrac *= 10; | |
2679 | for (; LOG10_EMACS_TIME_RESOLUTION < upfraclen; upfraclen--) | |
2680 | upfrac /= 10; | |
2681 | upfrac = min (upfrac, EMACS_TIME_RESOLUTION - 1); | |
2682 | } | |
e9a9ae03 | 2683 | up = make_emacs_time (upsec, upfrac); |
06e111a6 DN |
2684 | } |
2685 | fclose (fup); | |
2686 | } | |
4d7e6e51 | 2687 | unblock_input (); |
d35af63c PE |
2688 | |
2689 | return up; | |
06e111a6 DN |
2690 | } |
2691 | ||
2692 | #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff) | |
2693 | #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12)) | |
2694 | ||
2695 | static Lisp_Object | |
f4f634e8 | 2696 | procfs_ttyname (int rdev) |
06e111a6 DN |
2697 | { |
2698 | FILE *fdev = NULL; | |
2699 | char name[PATH_MAX]; | |
2700 | ||
4d7e6e51 | 2701 | block_input (); |
06e111a6 DN |
2702 | fdev = fopen ("/proc/tty/drivers", "r"); |
2703 | ||
2704 | if (fdev) | |
2705 | { | |
2706 | unsigned major; | |
2707 | unsigned long minor_beg, minor_end; | |
2708 | char minor[25]; /* 2 32-bit numbers + dash */ | |
2709 | char *endp; | |
2710 | ||
2711 | while (!feof (fdev) && !ferror (fdev)) | |
2712 | { | |
2713 | if (3 <= fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor) | |
2714 | && major == MAJOR (rdev)) | |
2715 | { | |
2716 | minor_beg = strtoul (minor, &endp, 0); | |
2717 | if (*endp == '\0') | |
2718 | minor_end = minor_beg; | |
2719 | else if (*endp == '-') | |
2720 | minor_end = strtoul (endp + 1, &endp, 0); | |
2721 | else | |
2722 | continue; | |
2723 | ||
2724 | if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end) | |
2725 | { | |
10d66ec0 | 2726 | sprintf (name + strlen (name), "%u", MINOR (rdev)); |
06e111a6 DN |
2727 | break; |
2728 | } | |
2729 | } | |
2730 | } | |
2731 | fclose (fdev); | |
2732 | } | |
4d7e6e51 | 2733 | unblock_input (); |
06e111a6 DN |
2734 | return build_string (name); |
2735 | } | |
2736 | ||
2737 | static unsigned long | |
2738 | procfs_get_total_memory (void) | |
2739 | { | |
2740 | FILE *fmem = NULL; | |
2741 | unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */ | |
2742 | ||
4d7e6e51 | 2743 | block_input (); |
06e111a6 DN |
2744 | fmem = fopen ("/proc/meminfo", "r"); |
2745 | ||
2746 | if (fmem) | |
2747 | { | |
2748 | unsigned long entry_value; | |
2749 | char entry_name[20]; /* the longest I saw is 13+1 */ | |
2750 | ||
2751 | while (!feof (fmem) && !ferror (fmem)) | |
2752 | { | |
2753 | if (2 <= fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value) | |
2754 | && strcmp (entry_name, "MemTotal:") == 0) | |
2755 | { | |
2756 | retval = entry_value; | |
2757 | break; | |
2758 | } | |
2759 | } | |
2760 | fclose (fmem); | |
2761 | } | |
4d7e6e51 | 2762 | unblock_input (); |
06e111a6 DN |
2763 | return retval; |
2764 | } | |
2765 | ||
2766 | Lisp_Object | |
f4f634e8 | 2767 | system_process_attributes (Lisp_Object pid) |
06e111a6 DN |
2768 | { |
2769 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
2770 | struct stat st; | |
2771 | struct passwd *pw; | |
2772 | struct group *gr; | |
2773 | long clocks_per_sec; | |
2774 | char *procfn_end; | |
2775 | char procbuf[1025], *p, *q; | |
2776 | int fd; | |
2777 | ssize_t nread; | |
e99a530f PE |
2778 | static char const default_cmd[] = "???"; |
2779 | const char *cmd = default_cmd; | |
2780 | int cmdsize = sizeof default_cmd - 1; | |
06e111a6 | 2781 | char *cmdline = NULL; |
e99a530f | 2782 | ptrdiff_t cmdline_size; |
06e111a6 | 2783 | unsigned char c; |
d311d28c PE |
2784 | printmax_t proc_id; |
2785 | int ppid, pgrp, sess, tty, tpgid, thcount; | |
2786 | uid_t uid; | |
2787 | gid_t gid; | |
a70072c9 PE |
2788 | unsigned long long u_time, s_time, cutime, cstime, start; |
2789 | long priority, niceness, rss; | |
06e111a6 | 2790 | unsigned long minflt, majflt, cminflt, cmajflt, vsize; |
d35af63c | 2791 | EMACS_TIME tnow, tstart, tboot, telapsed, us_time; |
06e111a6 DN |
2792 | double pcpu, pmem; |
2793 | Lisp_Object attrs = Qnil; | |
2794 | Lisp_Object cmd_str, decoded_cmd, tem; | |
2795 | struct gcpro gcpro1, gcpro2; | |
06e111a6 DN |
2796 | |
2797 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 2798 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 2799 | sprintf (procfn, "/proc/%"pMd, proc_id); |
06e111a6 DN |
2800 | if (stat (procfn, &st) < 0) |
2801 | return attrs; | |
2802 | ||
2803 | GCPRO2 (attrs, decoded_cmd); | |
2804 | ||
2805 | /* euid egid */ | |
2806 | uid = st.st_uid; | |
d311d28c | 2807 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
4d7e6e51 | 2808 | block_input (); |
06e111a6 | 2809 | pw = getpwuid (uid); |
4d7e6e51 | 2810 | unblock_input (); |
06e111a6 DN |
2811 | if (pw) |
2812 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
2813 | ||
2814 | gid = st.st_gid; | |
d311d28c | 2815 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
4d7e6e51 | 2816 | block_input (); |
06e111a6 | 2817 | gr = getgrgid (gid); |
4d7e6e51 | 2818 | unblock_input (); |
06e111a6 DN |
2819 | if (gr) |
2820 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
2821 | ||
2822 | strcpy (fn, procfn); | |
2823 | procfn_end = fn + strlen (fn); | |
2824 | strcpy (procfn_end, "/stat"); | |
2825 | fd = emacs_open (fn, O_RDONLY, 0); | |
cf84bb53 | 2826 | if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof (procbuf) - 1)) > 0) |
06e111a6 DN |
2827 | { |
2828 | procbuf[nread] = '\0'; | |
2829 | p = procbuf; | |
2830 | ||
2831 | p = strchr (p, '('); | |
2832 | if (p != NULL) | |
2833 | { | |
2834 | q = strrchr (p + 1, ')'); | |
2835 | /* comm */ | |
2836 | if (q != NULL) | |
2837 | { | |
2838 | cmd = p + 1; | |
2839 | cmdsize = q - cmd; | |
2840 | } | |
2841 | } | |
2842 | else | |
2843 | q = NULL; | |
06e111a6 DN |
2844 | /* Command name is encoded in locale-coding-system; decode it. */ |
2845 | cmd_str = make_unibyte_string (cmd, cmdsize); | |
2846 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
2847 | Vlocale_coding_system, 0); | |
2848 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
2849 | ||
2850 | if (q) | |
2851 | { | |
2852 | EMACS_INT ppid_eint, pgrp_eint, sess_eint, tpgid_eint, thcount_eint; | |
2853 | p = q + 2; | |
2854 | /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */ | |
2855 | sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld", | |
2856 | &c, &ppid, &pgrp, &sess, &tty, &tpgid, | |
2857 | &minflt, &cminflt, &majflt, &cmajflt, | |
a70072c9 PE |
2858 | &u_time, &s_time, &cutime, &cstime, |
2859 | &priority, &niceness, &thcount, &start, &vsize, &rss); | |
06e111a6 DN |
2860 | { |
2861 | char state_str[2]; | |
2862 | ||
2863 | state_str[0] = c; | |
2864 | state_str[1] = '\0'; | |
2865 | tem = build_string (state_str); | |
2866 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
2867 | } | |
2868 | /* Stops GCC whining about limited range of data type. */ | |
2869 | ppid_eint = ppid; | |
2870 | pgrp_eint = pgrp; | |
2871 | sess_eint = sess; | |
2872 | tpgid_eint = tpgid; | |
2873 | thcount_eint = thcount; | |
2874 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid_eint)), attrs); | |
2875 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp_eint)), attrs); | |
2876 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess_eint)), attrs); | |
2877 | attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs); | |
2878 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid_eint)), attrs); | |
2879 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs); | |
2880 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs); | |
2881 | attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), attrs); | |
2882 | attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), attrs); | |
2883 | clocks_per_sec = sysconf (_SC_CLK_TCK); | |
2884 | if (clocks_per_sec < 0) | |
2885 | clocks_per_sec = 100; | |
2886 | attrs = Fcons (Fcons (Qutime, | |
a70072c9 | 2887 | ltime_from_jiffies (u_time, clocks_per_sec)), |
06e111a6 DN |
2888 | attrs); |
2889 | attrs = Fcons (Fcons (Qstime, | |
a70072c9 | 2890 | ltime_from_jiffies (s_time, clocks_per_sec)), |
06e111a6 | 2891 | attrs); |
ac1e4171 | 2892 | attrs = Fcons (Fcons (Qtime, |
a70072c9 PE |
2893 | ltime_from_jiffies (s_time + u_time, |
2894 | clocks_per_sec)), | |
ac1e4171 | 2895 | attrs); |
06e111a6 DN |
2896 | attrs = Fcons (Fcons (Qcutime, |
2897 | ltime_from_jiffies (cutime, clocks_per_sec)), | |
2898 | attrs); | |
2899 | attrs = Fcons (Fcons (Qcstime, | |
2900 | ltime_from_jiffies (cstime, clocks_per_sec)), | |
ac1e4171 EZ |
2901 | attrs); |
2902 | attrs = Fcons (Fcons (Qctime, | |
2903 | ltime_from_jiffies (cstime+cutime, clocks_per_sec)), | |
06e111a6 DN |
2904 | attrs); |
2905 | attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs); | |
a70072c9 | 2906 | attrs = Fcons (Fcons (Qnice, make_number (niceness)), attrs); |
06e111a6 | 2907 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs); |
e9a9ae03 | 2908 | tnow = current_emacs_time (); |
d35af63c | 2909 | telapsed = get_up_time (); |
e9a9ae03 | 2910 | tboot = sub_emacs_time (tnow, telapsed); |
d35af63c | 2911 | tstart = time_from_jiffies (start, clocks_per_sec); |
e9a9ae03 | 2912 | tstart = add_emacs_time (tboot, tstart); |
d35af63c | 2913 | attrs = Fcons (Fcons (Qstart, make_lisp_time (tstart)), attrs); |
06e111a6 DN |
2914 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize/1024)), attrs); |
2915 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4*rss)), attrs); | |
e9a9ae03 | 2916 | telapsed = sub_emacs_time (tnow, tstart); |
d35af63c PE |
2917 | attrs = Fcons (Fcons (Qetime, make_lisp_time (telapsed)), attrs); |
2918 | us_time = time_from_jiffies (u_time + s_time, clocks_per_sec); | |
2919 | pcpu = (EMACS_TIME_TO_DOUBLE (us_time) | |
2920 | / EMACS_TIME_TO_DOUBLE (telapsed)); | |
06e111a6 DN |
2921 | if (pcpu > 1.0) |
2922 | pcpu = 1.0; | |
2923 | attrs = Fcons (Fcons (Qpcpu, make_float (100 * pcpu)), attrs); | |
2924 | pmem = 4.0 * 100 * rss / procfs_get_total_memory (); | |
2925 | if (pmem > 100) | |
2926 | pmem = 100; | |
2927 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); | |
2928 | } | |
2929 | } | |
2930 | if (fd >= 0) | |
2931 | emacs_close (fd); | |
2932 | ||
2933 | /* args */ | |
2934 | strcpy (procfn_end, "/cmdline"); | |
2935 | fd = emacs_open (fn, O_RDONLY, 0); | |
2936 | if (fd >= 0) | |
2937 | { | |
fbd02d7b | 2938 | char ch; |
fe6442b1 | 2939 | for (cmdline_size = 0; cmdline_size < STRING_BYTES_BOUND; cmdline_size++) |
06e111a6 | 2940 | { |
fe6442b1 PE |
2941 | if (emacs_read (fd, &ch, 1) != 1) |
2942 | break; | |
fbd02d7b | 2943 | c = ch; |
620f13b0 | 2944 | if (c_isspace (c) || c == '\\') |
06e111a6 DN |
2945 | cmdline_size++; /* for later quoting, see below */ |
2946 | } | |
2947 | if (cmdline_size) | |
2948 | { | |
2949 | cmdline = xmalloc (cmdline_size + 1); | |
2950 | lseek (fd, 0L, SEEK_SET); | |
2951 | cmdline[0] = '\0'; | |
2952 | if ((nread = read (fd, cmdline, cmdline_size)) >= 0) | |
2953 | cmdline[nread++] = '\0'; | |
2954 | else | |
2955 | { | |
2956 | /* Assigning zero to `nread' makes us skip the following | |
2957 | two loops, assign zero to cmdline_size, and enter the | |
2958 | following `if' clause that handles unknown command | |
2959 | lines. */ | |
2960 | nread = 0; | |
2961 | } | |
2962 | /* We don't want trailing null characters. */ | |
fe6442b1 | 2963 | for (p = cmdline + nread; p > cmdline + 1 && !p[-1]; p--) |
06e111a6 DN |
2964 | nread--; |
2965 | for (p = cmdline; p < cmdline + nread; p++) | |
2966 | { | |
2967 | /* Escape-quote whitespace and backslashes. */ | |
620f13b0 | 2968 | if (c_isspace (*p) || *p == '\\') |
06e111a6 DN |
2969 | { |
2970 | memmove (p + 1, p, nread - (p - cmdline)); | |
2971 | nread++; | |
2972 | *p++ = '\\'; | |
2973 | } | |
2974 | else if (*p == '\0') | |
2975 | *p = ' '; | |
2976 | } | |
2977 | cmdline_size = nread; | |
2978 | } | |
2979 | if (!cmdline_size) | |
2980 | { | |
06e111a6 DN |
2981 | cmdline_size = cmdsize + 2; |
2982 | cmdline = xmalloc (cmdline_size + 1); | |
e99a530f | 2983 | sprintf (cmdline, "[%.*s]", cmdsize, cmd); |
06e111a6 DN |
2984 | } |
2985 | emacs_close (fd); | |
2986 | /* Command line is encoded in locale-coding-system; decode it. */ | |
2987 | cmd_str = make_unibyte_string (cmdline, cmdline_size); | |
2988 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
2989 | Vlocale_coding_system, 0); | |
2990 | xfree (cmdline); | |
2991 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
2992 | } | |
2993 | ||
2994 | UNGCPRO; | |
2995 | return attrs; | |
2996 | } | |
91c85b70 | 2997 | |
f4f634e8 DN |
2998 | #elif defined (SOLARIS2) && defined (HAVE_PROCFS) |
2999 | ||
3000 | /* The <procfs.h> header does not like to be included if _LP64 is defined and | |
3001 | __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */ | |
3002 | #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) | |
3003 | #define PROCFS_FILE_OFFSET_BITS_HACK 1 | |
3004 | #undef _FILE_OFFSET_BITS | |
3005 | #else | |
3006 | #define PROCFS_FILE_OFFSET_BITS_HACK 0 | |
3007 | #endif | |
3008 | ||
3009 | #include <procfs.h> | |
3010 | ||
3011 | #if PROCFS_FILE_OFFSET_BITS_HACK == 1 | |
3012 | #define _FILE_OFFSET_BITS 64 | |
90efadd1 PE |
3013 | #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */ |
3014 | #endif | |
f4f634e8 DN |
3015 | #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */ |
3016 | ||
3017 | Lisp_Object | |
3018 | system_process_attributes (Lisp_Object pid) | |
3019 | { | |
3020 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
3021 | struct stat st; | |
3022 | struct passwd *pw; | |
3023 | struct group *gr; | |
3024 | char *procfn_end; | |
3025 | struct psinfo pinfo; | |
3026 | int fd; | |
3027 | ssize_t nread; | |
d311d28c PE |
3028 | printmax_t proc_id; |
3029 | uid_t uid; | |
3030 | gid_t gid; | |
f4f634e8 DN |
3031 | Lisp_Object attrs = Qnil; |
3032 | Lisp_Object decoded_cmd, tem; | |
3033 | struct gcpro gcpro1, gcpro2; | |
f4f634e8 DN |
3034 | |
3035 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 3036 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 3037 | sprintf (procfn, "/proc/%"pMd, proc_id); |
f4f634e8 DN |
3038 | if (stat (procfn, &st) < 0) |
3039 | return attrs; | |
3040 | ||
3041 | GCPRO2 (attrs, decoded_cmd); | |
3042 | ||
3043 | /* euid egid */ | |
3044 | uid = st.st_uid; | |
d311d28c | 3045 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
4d7e6e51 | 3046 | block_input (); |
f4f634e8 | 3047 | pw = getpwuid (uid); |
4d7e6e51 | 3048 | unblock_input (); |
f4f634e8 DN |
3049 | if (pw) |
3050 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3051 | ||
3052 | gid = st.st_gid; | |
d311d28c | 3053 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
4d7e6e51 | 3054 | block_input (); |
f4f634e8 | 3055 | gr = getgrgid (gid); |
4d7e6e51 | 3056 | unblock_input (); |
f4f634e8 DN |
3057 | if (gr) |
3058 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3059 | ||
3060 | strcpy (fn, procfn); | |
3061 | procfn_end = fn + strlen (fn); | |
3062 | strcpy (procfn_end, "/psinfo"); | |
3063 | fd = emacs_open (fn, O_RDONLY, 0); | |
3064 | if (fd >= 0 | |
cf84bb53 | 3065 | && (nread = read (fd, (char*)&pinfo, sizeof (struct psinfo)) > 0)) |
f4f634e8 DN |
3066 | { |
3067 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs); | |
3068 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs); | |
3069 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (pinfo.pr_sid)), attrs); | |
3070 | ||
3071 | { | |
3072 | char state_str[2]; | |
3073 | state_str[0] = pinfo.pr_lwp.pr_sname; | |
3074 | state_str[1] = '\0'; | |
3075 | tem = build_string (state_str); | |
3076 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
3077 | } | |
3078 | ||
3079 | /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t, | |
3080 | need to get a string from it. */ | |
3081 | ||
3082 | /* FIXME: missing: Qtpgid */ | |
3083 | ||
3084 | /* FIXME: missing: | |
3085 | Qminflt | |
3086 | Qmajflt | |
3087 | Qcminflt | |
3088 | Qcmajflt | |
3089 | ||
bfe11752 DN |
3090 | Qutime |
3091 | Qcutime | |
f4f634e8 DN |
3092 | Qstime |
3093 | Qcstime | |
3094 | Are they available? */ | |
3095 | ||
d35af63c PE |
3096 | attrs = Fcons (Fcons (Qtime, make_lisp_time (pinfo.pr_time)), attrs); |
3097 | attrs = Fcons (Fcons (Qctime, make_lisp_time (pinfo.pr_ctime)), attrs); | |
f4f634e8 DN |
3098 | attrs = Fcons (Fcons (Qpri, make_number (pinfo.pr_lwp.pr_pri)), attrs); |
3099 | attrs = Fcons (Fcons (Qnice, make_number (pinfo.pr_lwp.pr_nice)), attrs); | |
3100 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pinfo.pr_nlwp)), attrs); | |
3101 | ||
d35af63c | 3102 | attrs = Fcons (Fcons (Qstart, make_lisp_time (pinfo.pr_start)), attrs); |
f4f634e8 DN |
3103 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (pinfo.pr_size)), attrs); |
3104 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (pinfo.pr_rssize)), attrs); | |
3105 | ||
773d47f6 PE |
3106 | /* pr_pctcpu and pr_pctmem are unsigned integers in the |
3107 | range 0 .. 2**15, representing 0.0 .. 1.0. */ | |
63810350 PE |
3108 | attrs = Fcons (Fcons (Qpcpu, make_float (100.0 / 0x8000 * pinfo.pr_pctcpu)), attrs); |
3109 | attrs = Fcons (Fcons (Qpmem, make_float (100.0 / 0x8000 * pinfo.pr_pctmem)), attrs); | |
f4f634e8 DN |
3110 | |
3111 | decoded_cmd | |
3112 | = code_convert_string_norecord (make_unibyte_string (pinfo.pr_fname, | |
3113 | strlen (pinfo.pr_fname)), | |
3114 | Vlocale_coding_system, 0); | |
3115 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
3116 | decoded_cmd | |
3117 | = code_convert_string_norecord (make_unibyte_string (pinfo.pr_psargs, | |
3118 | strlen (pinfo.pr_psargs)), | |
3119 | Vlocale_coding_system, 0); | |
3120 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
3121 | } | |
3122 | ||
2d2d05d8 DN |
3123 | if (fd >= 0) |
3124 | emacs_close (fd); | |
3125 | ||
f4f634e8 DN |
3126 | UNGCPRO; |
3127 | return attrs; | |
3128 | } | |
06e111a6 | 3129 | |
5790543d | 3130 | #elif defined __FreeBSD__ |
b91b7e4d | 3131 | |
d054f3fb PE |
3132 | static EMACS_TIME |
3133 | timeval_to_EMACS_TIME (struct timeval t) | |
3134 | { | |
e9a9ae03 | 3135 | return make_emacs_time (t.tv_sec, t.tv_usec * 1000); |
d054f3fb PE |
3136 | } |
3137 | ||
3138 | static Lisp_Object | |
db7b8d06 | 3139 | make_lisp_timeval (struct timeval t) |
d054f3fb PE |
3140 | { |
3141 | return make_lisp_time (timeval_to_EMACS_TIME (t)); | |
3142 | } | |
3143 | ||
b91b7e4d EW |
3144 | Lisp_Object |
3145 | system_process_attributes (Lisp_Object pid) | |
3146 | { | |
3147 | int proc_id; | |
5790543d | 3148 | int pagesize = getpagesize (); |
b91b7e4d EW |
3149 | int npages; |
3150 | int fscale; | |
3151 | struct passwd *pw; | |
3152 | struct group *gr; | |
3153 | char *ttyname; | |
3154 | size_t len; | |
3155 | char args[MAXPATHLEN]; | |
3156 | EMACS_TIME t, now; | |
5790543d | 3157 | |
b91b7e4d EW |
3158 | int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID}; |
3159 | struct kinfo_proc proc; | |
5790543d | 3160 | size_t proclen = sizeof proc; |
b91b7e4d EW |
3161 | |
3162 | struct gcpro gcpro1, gcpro2; | |
3163 | Lisp_Object attrs = Qnil; | |
3164 | Lisp_Object decoded_comm; | |
5790543d | 3165 | |
b91b7e4d | 3166 | CHECK_NUMBER_OR_FLOAT (pid); |
af52196c | 3167 | CONS_TO_INTEGER (pid, int, proc_id); |
b91b7e4d | 3168 | mib[3] = proc_id; |
5790543d | 3169 | |
b91b7e4d EW |
3170 | if (sysctl (mib, 4, &proc, &proclen, NULL, 0) != 0) |
3171 | return attrs; | |
3172 | ||
3173 | GCPRO2 (attrs, decoded_comm); | |
5790543d PE |
3174 | |
3175 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (proc.ki_uid)), attrs); | |
3176 | ||
4d7e6e51 | 3177 | block_input (); |
b91b7e4d | 3178 | pw = getpwuid (proc.ki_uid); |
4d7e6e51 | 3179 | unblock_input (); |
b91b7e4d EW |
3180 | if (pw) |
3181 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3182 | ||
5790543d | 3183 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (proc.ki_svgid)), attrs); |
b91b7e4d | 3184 | |
4d7e6e51 | 3185 | block_input (); |
b91b7e4d | 3186 | gr = getgrgid (proc.ki_svgid); |
4d7e6e51 | 3187 | unblock_input (); |
b91b7e4d EW |
3188 | if (gr) |
3189 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3190 | ||
3191 | decoded_comm = code_convert_string_norecord | |
3192 | (make_unibyte_string (proc.ki_comm, strlen (proc.ki_comm)), | |
3193 | Vlocale_coding_system, 0); | |
5790543d | 3194 | |
b91b7e4d EW |
3195 | attrs = Fcons (Fcons (Qcomm, decoded_comm), attrs); |
3196 | { | |
3197 | char state[2] = {'\0', '\0'}; | |
3198 | switch (proc.ki_stat) | |
3199 | { | |
3200 | case SRUN: | |
3201 | state[0] = 'R'; | |
3202 | break; | |
3203 | ||
3204 | case SSLEEP: | |
3205 | state[0] = 'S'; | |
3206 | break; | |
5790543d | 3207 | |
b91b7e4d EW |
3208 | case SLOCK: |
3209 | state[0] = 'D'; | |
3210 | break; | |
3211 | ||
3212 | case SZOMB: | |
3213 | state[0] = 'Z'; | |
3214 | break; | |
5790543d | 3215 | |
b91b7e4d EW |
3216 | case SSTOP: |
3217 | state[0] = 'T'; | |
3218 | break; | |
3219 | } | |
3220 | attrs = Fcons (Fcons (Qstate, build_string (state)), attrs); | |
3221 | } | |
5790543d | 3222 | |
b91b7e4d EW |
3223 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (proc.ki_ppid)), attrs); |
3224 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (proc.ki_pgid)), attrs); | |
3225 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (proc.ki_sid)), attrs); | |
3226 | ||
4d7e6e51 | 3227 | block_input (); |
b91b7e4d | 3228 | ttyname = proc.ki_tdev == NODEV ? NULL : devname (proc.ki_tdev, S_IFCHR); |
4d7e6e51 | 3229 | unblock_input (); |
b91b7e4d EW |
3230 | if (ttyname) |
3231 | attrs = Fcons (Fcons (Qtty, build_string (ttyname)), attrs); | |
5790543d | 3232 | |
b91b7e4d EW |
3233 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (proc.ki_tpgid)), attrs); |
3234 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (proc.ki_rusage.ru_minflt)), attrs); | |
3235 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (proc.ki_rusage.ru_majflt)), attrs); | |
3236 | attrs = Fcons (Fcons (Qcminflt, make_number (proc.ki_rusage_ch.ru_minflt)), attrs); | |
3237 | attrs = Fcons (Fcons (Qcmajflt, make_number (proc.ki_rusage_ch.ru_majflt)), attrs); | |
3238 | ||
db7b8d06 PE |
3239 | attrs = Fcons (Fcons (Qutime, make_lisp_timeval (proc.ki_rusage.ru_utime)), |
3240 | attrs); | |
3241 | attrs = Fcons (Fcons (Qstime, make_lisp_timeval (proc.ki_rusage.ru_stime)), | |
3242 | attrs); | |
e9a9ae03 PE |
3243 | t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage.ru_utime), |
3244 | timeval_to_EMACS_TIME (proc.ki_rusage.ru_stime)); | |
db7b8d06 | 3245 | attrs = Fcons (Fcons (Qtime, make_lisp_time (t)), attrs); |
b91b7e4d | 3246 | |
db7b8d06 PE |
3247 | attrs = Fcons (Fcons (Qcutime, |
3248 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3249 | attrs); | |
3250 | attrs = Fcons (Fcons (Qcstime, | |
3251 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3252 | attrs); | |
e9a9ae03 PE |
3253 | t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_utime), |
3254 | timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_stime)); | |
db7b8d06 | 3255 | attrs = Fcons (Fcons (Qctime, make_lisp_time (t)), attrs); |
b91b7e4d | 3256 | |
5790543d PE |
3257 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (proc.ki_numthreads)), |
3258 | attrs); | |
b91b7e4d EW |
3259 | attrs = Fcons (Fcons (Qpri, make_number (proc.ki_pri.pri_native)), attrs); |
3260 | attrs = Fcons (Fcons (Qnice, make_number (proc.ki_nice)), attrs); | |
db7b8d06 | 3261 | attrs = Fcons (Fcons (Qstart, make_lisp_timeval (proc.ki_start)), attrs); |
b91b7e4d | 3262 | attrs = Fcons (Fcons (Qvsize, make_number (proc.ki_size >> 10)), attrs); |
5790543d PE |
3263 | attrs = Fcons (Fcons (Qrss, make_number (proc.ki_rssize * pagesize >> 10)), |
3264 | attrs); | |
b91b7e4d | 3265 | |
e9a9ae03 PE |
3266 | now = current_emacs_time (); |
3267 | t = sub_emacs_time (now, timeval_to_EMACS_TIME (proc.ki_start)); | |
db7b8d06 | 3268 | attrs = Fcons (Fcons (Qetime, make_lisp_time (t)), attrs); |
b91b7e4d | 3269 | |
5790543d | 3270 | len = sizeof fscale; |
b91b7e4d EW |
3271 | if (sysctlbyname ("kern.fscale", &fscale, &len, NULL, 0) == 0) |
3272 | { | |
5790543d | 3273 | double pcpu; |
b91b7e4d | 3274 | fixpt_t ccpu; |
5790543d | 3275 | len = sizeof ccpu; |
b91b7e4d EW |
3276 | if (sysctlbyname ("kern.ccpu", &ccpu, &len, NULL, 0) == 0) |
3277 | { | |
5790543d PE |
3278 | pcpu = (100.0 * proc.ki_pctcpu / fscale |
3279 | / (1 - exp (proc.ki_swtime * log ((double) ccpu / fscale)))); | |
3280 | attrs = Fcons (Fcons (Qpcpu, make_fixnum_or_float (pcpu)), attrs); | |
b91b7e4d EW |
3281 | } |
3282 | } | |
3283 | ||
5790543d | 3284 | len = sizeof npages; |
b91b7e4d EW |
3285 | if (sysctlbyname ("hw.availpages", &npages, &len, NULL, 0) == 0) |
3286 | { | |
5790543d PE |
3287 | double pmem = (proc.ki_flag & P_INMEM |
3288 | ? 100.0 * proc.ki_rssize / npages | |
3289 | : 0); | |
3290 | attrs = Fcons (Fcons (Qpmem, make_fixnum_or_float (pmem)), attrs); | |
b91b7e4d EW |
3291 | } |
3292 | ||
3293 | mib[2] = KERN_PROC_ARGS; | |
3294 | len = MAXPATHLEN; | |
3295 | if (sysctl (mib, 4, args, &len, NULL, 0) == 0) | |
3296 | { | |
3297 | int i; | |
3298 | for (i = 0; i < len; i++) | |
3299 | { | |
3300 | if (! args[i] && i < len - 1) | |
3301 | args[i] = ' '; | |
3302 | } | |
3303 | ||
5790543d PE |
3304 | decoded_comm = |
3305 | (code_convert_string_norecord | |
d7ea76b4 | 3306 | (build_unibyte_string (args), |
5790543d | 3307 | Vlocale_coding_system, 0)); |
b91b7e4d EW |
3308 | |
3309 | attrs = Fcons (Fcons (Qargs, decoded_comm), attrs); | |
3310 | } | |
5790543d | 3311 | |
b91b7e4d EW |
3312 | UNGCPRO; |
3313 | return attrs; | |
3314 | } | |
3315 | ||
f8d23104 DN |
3316 | /* The WINDOWSNT implementation is in w32.c. |
3317 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 3318 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
3319 | |
3320 | Lisp_Object | |
3321 | system_process_attributes (Lisp_Object pid) | |
3322 | { | |
9dcbe89b | 3323 | return Qnil; |
06e111a6 DN |
3324 | } |
3325 | ||
3326 | #endif /* !defined (WINDOWSNT) */ |