Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
ab422c4d PE |
2 | Copyright (C) 1985-1988, 1993-1995, 1999-2013 Free Software |
3 | 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> |
406af475 | 25 | #include "sysstdio.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 | |
620f13b0 | 33 | #include <c-ctype.h> |
d35af63c | 34 | #include <utimens.h> |
67342916 | 35 | |
86a5659e | 36 | #include "lisp.h" |
819b8f00 | 37 | #include "sysselect.h" |
9ac0d9e0 | 38 | #include "blockinput.h" |
86a5659e | 39 | |
7fd8c501 PE |
40 | #if defined DARWIN_OS || defined __FreeBSD__ |
41 | # include <sys/sysctl.h> | |
7dca65a4 PE |
42 | #endif |
43 | ||
44 | #ifdef __FreeBSD__ | |
368a85a4 PE |
45 | /* Sparc/ARM machine/frame.h has 'struct frame' which conflicts with Emacs's |
46 | 'struct frame', so rename it. */ | |
47 | # define frame freebsd_frame | |
48 | # include <sys/user.h> | |
49 | # undef frame | |
50 | ||
51 | # include <sys/resource.h> | |
52 | # include <math.h> | |
b91b7e4d EW |
53 | #endif |
54 | ||
fe03522b | 55 | #ifdef WINDOWSNT |
e15b6288 JR |
56 | #define read sys_read |
57 | #define write sys_write | |
62aba0d4 FP |
58 | #ifndef STDERR_FILENO |
59 | #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE)) | |
60 | #endif | |
fe03522b | 61 | #include <windows.h> |
fe03522b RS |
62 | #endif /* not WINDOWSNT */ |
63 | ||
86a5659e JB |
64 | #include <sys/types.h> |
65 | #include <sys/stat.h> | |
66 | #include <errno.h> | |
67 | ||
b05af5d3 PE |
68 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
69 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
70 | #include <sys/systeminfo.h> | |
71 | #endif | |
72 | ||
207bdbdb | 73 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
207bdbdb | 74 | #include "msdos.h" |
15614e61 | 75 | #endif |
207bdbdb | 76 | |
7fd8c501 | 77 | #include <sys/param.h> |
bb4bc8e2 | 78 | #include <sys/file.h> |
bb4bc8e2 | 79 | #include <fcntl.h> |
86a5659e | 80 | |
e04a4e0d | 81 | #include "systty.h" |
94c8642a | 82 | #include "syswait.h" |
86a5659e | 83 | |
a7ebc409 | 84 | #ifdef HAVE_SYS_UTSNAME_H |
86a5659e | 85 | #include <sys/utsname.h> |
86a5659e | 86 | #include <memory.h> |
a7ebc409 | 87 | #endif /* HAVE_SYS_UTSNAME_H */ |
86a5659e | 88 | |
e36ec798 | 89 | #include "keyboard.h" |
0137dbf7 | 90 | #include "frame.h" |
86a5659e JB |
91 | #include "window.h" |
92 | #include "termhooks.h" | |
93 | #include "termchar.h" | |
94 | #include "termopts.h" | |
95 | #include "dispextern.h" | |
96 | #include "process.h" | |
0a125897 | 97 | #include "cm.h" /* for reset_sys_modes */ |
86a5659e | 98 | |
fe03522b RS |
99 | #ifdef WINDOWSNT |
100 | #include <direct.h> | |
101 | /* In process.h which conflicts with the local copy. */ | |
102 | #define _P_WAIT 0 | |
43db14bb JB |
103 | int _cdecl _spawnlp (int, const char *, const char *, ...); |
104 | int _cdecl _getpid (void); | |
fe03522b RS |
105 | #endif |
106 | ||
91bac16a JB |
107 | #include "syssignal.h" |
108 | #include "systime.h" | |
86a5659e | 109 | |
653d4f43 PE |
110 | static void emacs_get_tty (int, struct emacs_tty *); |
111 | static int emacs_set_tty (int, struct emacs_tty *, bool); | |
1fa53021 | 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; | |
9239d970 | 137 | char *pwd = getenv ("PWD"); |
f78f1a83 | 138 | struct stat dotstat, pwdstat; |
9239d970 | 139 | /* If PWD is accurate, use it instead of calling getcwd. PWD is |
f78f1a83 EZ |
140 | sometimes a nicer name, and using it may avoid a fatal error if a |
141 | parent directory is searchable but not readable. */ | |
9239d970 | 142 | if (pwd |
f78f1a83 EZ |
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 | } | |
f78f1a83 EZ |
158 | else |
159 | { | |
160 | size_t buf_size = 1024; | |
38182d90 | 161 | buf = malloc (buf_size); |
f78f1a83 EZ |
162 | if (!buf) |
163 | return NULL; | |
164 | for (;;) | |
165 | { | |
166 | if (getcwd (buf, buf_size) == buf) | |
167 | break; | |
168 | if (errno != ERANGE) | |
169 | { | |
170 | int tmp_errno = errno; | |
171 | free (buf); | |
172 | errno = tmp_errno; | |
173 | return NULL; | |
174 | } | |
175 | buf_size *= 2; | |
38182d90 | 176 | buf = realloc (buf, buf_size); |
f78f1a83 EZ |
177 | if (!buf) |
178 | return NULL; | |
179 | } | |
180 | } | |
f78f1a83 EZ |
181 | return buf; |
182 | } | |
183 | #endif | |
184 | ||
64e971c3 | 185 | \f |
9628b887 | 186 | /* Discard pending input on all input descriptors. */ |
91bac16a | 187 | |
08633194 | 188 | void |
971de7fb | 189 | discard_tty_input (void) |
86a5659e | 190 | { |
fe03522b | 191 | #ifndef WINDOWSNT |
91bac16a | 192 | struct emacs_tty buf; |
86a5659e JB |
193 | |
194 | if (noninteractive) | |
195 | return; | |
196 | ||
fe03522b | 197 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 198 | while (dos_keyread () != -1) |
fe03522b | 199 | ; |
207bdbdb | 200 | #else /* not MSDOS */ |
9628b887 | 201 | { |
28d7d09f | 202 | struct tty_display_info *tty; |
9628b887 KL |
203 | for (tty = tty_list; tty; tty = tty->next) |
204 | { | |
0b0d3e0b KL |
205 | if (tty->input) /* Is the device suspended? */ |
206 | { | |
12e610e8 DN |
207 | emacs_get_tty (fileno (tty->input), &buf); |
208 | emacs_set_tty (fileno (tty->input), &buf, 0); | |
0b0d3e0b | 209 | } |
9628b887 KL |
210 | } |
211 | } | |
207bdbdb | 212 | #endif /* not MSDOS */ |
fe03522b | 213 | #endif /* not WINDOWSNT */ |
86a5659e JB |
214 | } |
215 | ||
16c290d8 | 216 | \f |
86a5659e JB |
217 | #ifdef SIGTSTP |
218 | ||
64e971c3 | 219 | /* Arrange for character C to be read as the next input from |
16c290d8 KL |
220 | the terminal. |
221 | XXX What if we have multiple ttys? | |
222 | */ | |
64e971c3 | 223 | |
dfcf069d | 224 | void |
0c2338d8 | 225 | stuff_char (char c) |
86a5659e | 226 | { |
428a555e | 227 | if (! FRAME_TERMCAP_P (SELECTED_FRAME ())) |
23dab951 RS |
228 | return; |
229 | ||
86a5659e JB |
230 | /* Should perhaps error if in batch mode */ |
231 | #ifdef TIOCSTI | |
0b0d3e0b | 232 | ioctl (fileno (CURTTY()->input), TIOCSTI, &c); |
86a5659e | 233 | #else /* no TIOCSTI */ |
71f06467 | 234 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
235 | #endif /* no TIOCSTI */ |
236 | } | |
237 | ||
238 | #endif /* SIGTSTP */ | |
64e971c3 | 239 | \f |
08633194 | 240 | void |
16c290d8 | 241 | init_baud_rate (int fd) |
86a5659e | 242 | { |
4c620157 | 243 | int emacs_ospeed; |
67342916 | 244 | |
86a5659e | 245 | if (noninteractive) |
5bdd7bdd | 246 | emacs_ospeed = 0; |
86a5659e JB |
247 | else |
248 | { | |
fe03522b | 249 | #ifdef DOS_NT |
5bdd7bdd | 250 | emacs_ospeed = 15; |
fe03522b | 251 | #else /* not DOS_NT */ |
e04a4e0d | 252 | struct termios sg; |
91bac16a | 253 | |
71f06467 | 254 | sg.c_cflag = B9600; |
16c290d8 | 255 | tcgetattr (fd, &sg); |
5bdd7bdd | 256 | emacs_ospeed = cfgetospeed (&sg); |
fe03522b | 257 | #endif /* not DOS_NT */ |
86a5659e | 258 | } |
177c0ea7 | 259 | |
5bdd7bdd GM |
260 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
261 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
262 | if (baud_rate == 0) |
263 | baud_rate = 1200; | |
264 | } | |
265 | ||
16c290d8 | 266 | \f |
86a5659e | 267 | |
77defa9a | 268 | #ifndef MSDOS |
86a5659e | 269 | |
bb5f74ee PE |
270 | /* Wait for the subprocess with process id CHILD to terminate or change status. |
271 | CHILD must be a child process that has not been reaped. | |
272 | If STATUS is non-null, store the waitpid-style exit status into *STATUS | |
273 | and tell wait_reading_process_output that it needs to look around. | |
274 | Use waitpid-style OPTIONS when waiting. | |
275 | If INTERRUPTIBLE, this function is interruptible by a signal. | |
276 | ||
277 | Return CHILD if successful, 0 if no status is available; | |
278 | the latter is possible only when options & NOHANG. */ | |
279 | static pid_t | |
280 | get_child_status (pid_t child, int *status, int options, bool interruptible) | |
86a5659e | 281 | { |
bb5f74ee PE |
282 | pid_t pid; |
283 | ||
284 | /* Invoke waitpid only with a known process ID; do not invoke | |
285 | waitpid with a nonpositive argument. Otherwise, Emacs might | |
286 | reap an unwanted process by mistake. For example, invoking | |
287 | waitpid (-1, ...) can mess up glib by reaping glib's subprocesses, | |
288 | so that another thread running glib won't find them. */ | |
908589fd | 289 | eassert (child > 0); |
bb5f74ee PE |
290 | |
291 | while ((pid = waitpid (child, status, options)) < 0) | |
86a5659e | 292 | { |
9cdde1e2 PE |
293 | /* Check that CHILD is a child process that has not been reaped, |
294 | and that STATUS and OPTIONS are valid. Otherwise abort, | |
295 | as continuing after this internal error could cause Emacs to | |
296 | become confused and kill innocent-victim processes. */ | |
297 | if (errno != EINTR) | |
298 | emacs_abort (); | |
ac3ac859 | 299 | |
22bae83f EZ |
300 | /* Note: the MS-Windows emulation of waitpid calls QUIT |
301 | internally. */ | |
1ef14cb4 LMI |
302 | if (interruptible) |
303 | QUIT; | |
86a5659e | 304 | } |
86a5659e | 305 | |
bb5f74ee PE |
306 | /* If successful and status is requested, tell wait_reading_process_output |
307 | that it needs to wake up and look around. */ | |
308 | if (pid && status && input_available_clear_time) | |
43aac990 | 309 | *input_available_clear_time = make_timespec (0, 0); |
e7a6747f | 310 | |
bb5f74ee PE |
311 | return pid; |
312 | } | |
313 | ||
314 | /* Wait for the subprocess with process id CHILD to terminate. | |
315 | CHILD must be a child process that has not been reaped. | |
316 | If STATUS is non-null, store the waitpid-style exit status into *STATUS | |
317 | and tell wait_reading_process_output that it needs to look around. | |
318 | If INTERRUPTIBLE, this function is interruptible by a signal. */ | |
e7a6747f | 319 | void |
bb5f74ee | 320 | wait_for_termination (pid_t child, int *status, bool interruptible) |
e7a6747f | 321 | { |
bb5f74ee | 322 | get_child_status (child, status, 0, interruptible); |
e7a6747f AS |
323 | } |
324 | ||
bb5f74ee PE |
325 | /* Report whether the subprocess with process id CHILD has changed status. |
326 | Termination counts as a change of status. | |
327 | CHILD must be a child process that has not been reaped. | |
328 | If STATUS is non-null, store the waitpid-style exit status into *STATUS | |
329 | and tell wait_reading_process_output that it needs to look around. | |
330 | Use waitpid-style OPTIONS to check status, but do not wait. | |
331 | ||
332 | Return CHILD if successful, 0 if no status is available because | |
333 | the process's state has not changed. */ | |
334 | pid_t | |
335 | child_status_changed (pid_t child, int *status, int options) | |
e7a6747f | 336 | { |
bb5f74ee | 337 | return get_child_status (child, status, WNOHANG | options, 0); |
e7a6747f AS |
338 | } |
339 | ||
64e971c3 | 340 | \f |
86a5659e JB |
341 | /* Set up the terminal at the other end of a pseudo-terminal that |
342 | we will be controlling an inferior through. | |
343 | It should not echo or do line-editing, since that is done | |
344 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
345 | ||
08633194 | 346 | void |
971de7fb | 347 | child_setup_tty (int out) |
86a5659e | 348 | { |
77defa9a | 349 | #ifndef WINDOWSNT |
91bac16a JB |
350 | struct emacs_tty s; |
351 | ||
12e610e8 | 352 | emacs_get_tty (out, &s); |
91bac16a JB |
353 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
354 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 355 | #ifdef NLDLY |
07cfc4e7 GM |
356 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html |
357 | Some versions of GNU Hurd do not have FFDLY? */ | |
358 | #ifdef FFDLY | |
91bac16a JB |
359 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
360 | /* No output delays */ | |
07cfc4e7 GM |
361 | #else |
362 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY); | |
363 | /* No output delays */ | |
364 | #endif | |
9d4e5eea | 365 | #endif |
91bac16a JB |
366 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
367 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
368 | #ifdef IUCLC |
369 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
370 | #endif | |
f7097b2a RS |
371 | #ifdef ISTRIP |
372 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
373 | #endif | |
23e4c8be | 374 | #ifdef OLCUC |
9d4e5eea RS |
375 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
376 | #endif | |
f7097b2a | 377 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 378 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
441f6399 RS |
379 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
380 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 381 | |
86a5659e | 382 | #ifdef HPUX |
91bac16a | 383 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 384 | #endif /* HPUX */ |
91bac16a | 385 | |
dfe598b5 RS |
386 | #ifdef SIGNALS_VIA_CHARACTERS |
387 | /* the QUIT and INTR character are used in process_send_signal | |
388 | so set them here to something useful. */ | |
fa51fa32 | 389 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 390 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 391 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
392 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
393 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
394 | ||
86a5659e | 395 | #ifdef AIX |
86a5659e JB |
396 | /* Also, PTY overloads NUL and BREAK. |
397 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
398 | s.main.c_iflag &= ~IGNBRK; |
399 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
400 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
401 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
402 | would force it to 0377. That looks like duplicated code. */ | |
91bac16a | 403 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
404 | #endif /* AIX */ |
405 | ||
aaa0a19a | 406 | /* We originally enabled ICANON (and set VEOF to 04), and then had |
c80e3b4a | 407 | process.c send additional EOF chars to flush the output when faced |
aaa0a19a | 408 | with long lines, but this leads to weird effects when the |
2b0a91e7 SM |
409 | subprocess has disabled ICANON and ends up seeing those spurious |
410 | extra EOFs. So we don't send EOFs any more in | |
aaa0a19a SM |
411 | process.c:send_process. First we tried to disable ICANON by |
412 | default, so if a subsprocess sets up ICANON, it's his problem (or | |
413 | the Elisp package that talks to it) to deal with lines that are | |
414 | too long. But this disables some features, such as the ability | |
415 | to send EOF signals. So we re-enabled ICANON but there is no | |
416 | more "send eof to flush" going on (which is wrong and unportable | |
417 | in itself). The correct way to handle too much output is to | |
418 | buffer what could not be written and then write it again when | |
419 | select returns ok for writing. This has it own set of | |
420 | problems. Write is now asynchronous, is that a problem? How much | |
421 | do we buffer, and what do we do when that limit is reached? */ | |
9a747ba6 JD |
422 | |
423 | s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */ | |
424 | s.main.c_cc[VEOF] = 'D'&037; /* Control-D */ | |
3d15fe78 | 425 | #if 0 /* These settings only apply to non-ICANON mode. */ |
2b0a91e7 SM |
426 | s.main.c_cc[VMIN] = 1; |
427 | s.main.c_cc[VTIME] = 0; | |
aaa0a19a | 428 | #endif |
2b0a91e7 | 429 | |
12e610e8 | 430 | emacs_set_tty (out, &s, 0); |
77defa9a | 431 | #endif /* not WINDOWSNT */ |
86a5659e | 432 | } |
57507bf8 | 433 | #endif /* not MSDOS */ |
86a5659e | 434 | |
64e971c3 | 435 | \f |
2fe28299 | 436 | /* Record a signal code and the action for it. */ |
86a5659e JB |
437 | struct save_signal |
438 | { | |
439 | int code; | |
2fe28299 | 440 | struct sigaction action; |
86a5659e JB |
441 | }; |
442 | ||
f57e2426 J |
443 | static void save_signal_handlers (struct save_signal *); |
444 | static void restore_signal_handlers (struct save_signal *); | |
35a05cca | 445 | |
86a5659e JB |
446 | /* Suspend the Emacs process; give terminal to its superior. */ |
447 | ||
08633194 | 448 | void |
971de7fb | 449 | sys_suspend (void) |
86a5659e | 450 | { |
d983a10b PE |
451 | #ifndef DOS_NT |
452 | kill (0, SIGTSTP); | |
453 | #else | |
86a5659e JB |
454 | /* On a system where suspending is not implemented, |
455 | instead fork a subshell and let it talk directly to the terminal | |
456 | while we wait. */ | |
a0932daa KH |
457 | sys_subshell (); |
458 | ||
d983a10b | 459 | #endif |
a0932daa KH |
460 | } |
461 | ||
462 | /* Fork a subshell. */ | |
463 | ||
08633194 | 464 | void |
971de7fb | 465 | sys_subshell (void) |
a0932daa | 466 | { |
ad00c243 | 467 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
468 | int st; |
469 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
470 | #endif | |
5fbab051 | 471 | pid_t pid; |
bb5f74ee | 472 | int status; |
86a5659e | 473 | struct save_signal saved_handlers[5]; |
c365c355 PE |
474 | char *str = SSDATA (encode_current_directory ()); |
475 | ||
476 | #ifdef DOS_NT | |
477 | pid = 0; | |
478 | #else | |
479 | { | |
480 | char *volatile str_volatile = str; | |
481 | pid = vfork (); | |
482 | str = str_volatile; | |
483 | } | |
484 | #endif | |
485 | ||
486 | if (pid < 0) | |
487 | error ("Can't spawn subshell"); | |
86a5659e JB |
488 | |
489 | saved_handlers[0].code = SIGINT; | |
490 | saved_handlers[1].code = SIGQUIT; | |
491 | saved_handlers[2].code = SIGTERM; | |
4a4bbad2 | 492 | #ifdef USABLE_SIGIO |
86a5659e JB |
493 | saved_handlers[3].code = SIGIO; |
494 | saved_handlers[4].code = 0; | |
495 | #else | |
496 | saved_handlers[3].code = 0; | |
497 | #endif | |
498 | ||
ad00c243 | 499 | #ifdef DOS_NT |
718ca3cf | 500 | save_signal_handlers (saved_handlers); |
7964ba9e RS |
501 | #endif |
502 | ||
86a5659e JB |
503 | if (pid == 0) |
504 | { | |
8ea90aa3 | 505 | const char *sh = 0; |
86a5659e | 506 | |
ad00c243 | 507 | #ifdef DOS_NT /* MW, Aug 1993 */ |
9239d970 | 508 | getcwd (oldwd, sizeof oldwd); |
7964ba9e | 509 | if (sh == 0) |
83be8524 | 510 | sh = egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ |
207bdbdb | 511 | #endif |
7964ba9e | 512 | if (sh == 0) |
83be8524 | 513 | sh = egetenv ("SHELL"); |
86a5659e JB |
514 | if (sh == 0) |
515 | sh = "sh"; | |
207bdbdb | 516 | |
86a5659e | 517 | /* Use our buffer's default directory for the subshell. */ |
c365c355 | 518 | if (chdir (str) != 0) |
32299e33 PE |
519 | { |
520 | #ifndef DOS_NT | |
c365c355 | 521 | emacs_perror (str); |
4ebbdd67 | 522 | _exit (EXIT_CANCELED); |
32299e33 PE |
523 | #endif |
524 | } | |
efa04277 | 525 | |
fe03522b | 526 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 527 | { |
48178f9a EZ |
528 | char *epwd = getenv ("PWD"); |
529 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
530 | |
531 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 532 | if (epwd) |
c0917202 | 533 | { |
48178f9a | 534 | strcpy (old_pwd, epwd); |
c0917202 EZ |
535 | setenv ("PWD", str, 1); |
536 | } | |
537 | st = system (sh); | |
32299e33 | 538 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
48178f9a | 539 | if (epwd) |
c0917202 EZ |
540 | putenv (old_pwd); /* restore previous value */ |
541 | } | |
207bdbdb | 542 | #else /* not MSDOS */ |
fe03522b | 543 | #ifdef WINDOWSNT |
fe03522b RS |
544 | /* Waits for process completion */ |
545 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
32299e33 | 546 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
fe03522b RS |
547 | if (pid == -1) |
548 | write (1, "Can't execute subshell", 22); | |
fe03522b | 549 | #else /* not WINDOWSNT */ |
e120ea40 | 550 | execlp (sh, sh, (char *) 0); |
4ebbdd67 PE |
551 | emacs_perror (sh); |
552 | _exit (errno == ENOENT ? EXIT_ENOENT : EXIT_CANNOT_INVOKE); | |
fe03522b | 553 | #endif /* not WINDOWSNT */ |
207bdbdb | 554 | #endif /* not MSDOS */ |
86a5659e JB |
555 | } |
556 | ||
718ca3cf | 557 | /* Do this now if we did not do it before. */ |
ed68db4d | 558 | #ifndef MSDOS |
86a5659e | 559 | save_signal_handlers (saved_handlers); |
718ca3cf RS |
560 | #endif |
561 | ||
ad00c243 | 562 | #ifndef DOS_NT |
bb5f74ee | 563 | wait_for_termination (pid, &status, 0); |
7964ba9e | 564 | #endif |
86a5659e | 565 | restore_signal_handlers (saved_handlers); |
86a5659e JB |
566 | } |
567 | ||
35a05cca | 568 | static void |
971de7fb | 569 | save_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
570 | { |
571 | while (saved_handlers->code) | |
572 | { | |
2fe28299 PE |
573 | struct sigaction action; |
574 | emacs_sigaction_init (&action, SIG_IGN); | |
575 | sigaction (saved_handlers->code, &action, &saved_handlers->action); | |
86a5659e JB |
576 | saved_handlers++; |
577 | } | |
578 | } | |
579 | ||
35a05cca | 580 | static void |
971de7fb | 581 | restore_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
582 | { |
583 | while (saved_handlers->code) | |
584 | { | |
2fe28299 | 585 | sigaction (saved_handlers->code, &saved_handlers->action, 0); |
86a5659e JB |
586 | saved_handlers++; |
587 | } | |
588 | } | |
589 | \f | |
4a4bbad2 | 590 | #ifdef USABLE_SIGIO |
d486344e | 591 | static int old_fcntl_flags[FD_SETSIZE]; |
4a4bbad2 | 592 | #endif |
86a5659e | 593 | |
08633194 | 594 | void |
971de7fb | 595 | init_sigio (int fd) |
86a5659e | 596 | { |
4a4bbad2 | 597 | #ifdef USABLE_SIGIO |
819b8f00 KL |
598 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
599 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
23dab951 | 600 | interrupts_deferred = 0; |
4a4bbad2 | 601 | #endif |
86a5659e JB |
602 | } |
603 | ||
604efe86 | 604 | static void |
971de7fb | 605 | reset_sigio (int fd) |
86a5659e | 606 | { |
4a4bbad2 | 607 | #ifdef USABLE_SIGIO |
819b8f00 | 608 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 609 | #endif |
86a5659e JB |
610 | } |
611 | ||
08633194 | 612 | void |
971de7fb | 613 | request_sigio (void) |
86a5659e | 614 | { |
4a4bbad2 | 615 | #ifdef USABLE_SIGIO |
2fe28299 PE |
616 | sigset_t unblocked; |
617 | ||
6bbba5a6 | 618 | if (noninteractive) |
23dab951 RS |
619 | return; |
620 | ||
2fe28299 | 621 | sigemptyset (&unblocked); |
4a4bbad2 | 622 | # ifdef SIGWINCH |
2fe28299 | 623 | sigaddset (&unblocked, SIGWINCH); |
4a4bbad2 | 624 | # endif |
2fe28299 PE |
625 | sigaddset (&unblocked, SIGIO); |
626 | pthread_sigmask (SIG_UNBLOCK, &unblocked, 0); | |
86a5659e JB |
627 | |
628 | interrupts_deferred = 0; | |
4a4bbad2 | 629 | #endif |
86a5659e JB |
630 | } |
631 | ||
08633194 | 632 | void |
0a125897 | 633 | unrequest_sigio (void) |
cf84bb53 | 634 | { |
4a4bbad2 | 635 | #ifdef USABLE_SIGIO |
2fe28299 PE |
636 | sigset_t blocked; |
637 | ||
6bbba5a6 KL |
638 | if (noninteractive) |
639 | return; | |
640 | ||
2fe28299 | 641 | sigemptyset (&blocked); |
4a4bbad2 | 642 | # ifdef SIGWINCH |
2fe28299 | 643 | sigaddset (&blocked, SIGWINCH); |
4a4bbad2 | 644 | # endif |
2fe28299 PE |
645 | sigaddset (&blocked, SIGIO); |
646 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
86a5659e | 647 | interrupts_deferred = 1; |
4a4bbad2 | 648 | #endif |
86a5659e | 649 | } |
177c0ea7 | 650 | |
08633194 | 651 | void |
4a4bbad2 | 652 | ignore_sigio (void) |
86a5659e | 653 | { |
4a4bbad2 PE |
654 | #ifdef USABLE_SIGIO |
655 | signal (SIGIO, SIG_IGN); | |
656 | #endif | |
86a5659e | 657 | } |
feb67dfe | 658 | |
9ae8f997 | 659 | \f |
322aea6d PE |
660 | /* Saving and restoring the process group of Emacs's terminal. */ |
661 | ||
662 | /* The process group of which Emacs was a member when it initially | |
663 | started. | |
664 | ||
665 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
666 | getpid ()), then we know we're running under a shell with job | |
667 | control (Emacs would never be run as part of a pipeline). | |
668 | Everything is fine. | |
669 | ||
670 | If Emacs was not in its own process group, then we know we're | |
671 | running under a shell (or a caller) that doesn't know how to | |
672 | separate itself from Emacs (like sh). Emacs must be in its own | |
673 | process group in order to receive SIGIO correctly. In this | |
674 | situation, we put ourselves in our own pgroup, forcibly set the | |
675 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
676 | the tty's pgroup just like any other terminal setting. If | |
677 | inherited_group was not the tty's pgroup, then we'll get a | |
678 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
679 | it goes foreground in the future, which is what should happen. */ | |
680 | ||
681 | static pid_t inherited_pgroup; | |
682 | ||
683 | void | |
684 | init_foreground_group (void) | |
685 | { | |
dd0333b6 | 686 | pid_t pgrp = getpgrp (); |
322aea6d PE |
687 | inherited_pgroup = getpid () == pgrp ? 0 : pgrp; |
688 | } | |
689 | ||
b8956427 PE |
690 | /* Block and unblock SIGTTOU. */ |
691 | ||
692 | void | |
693 | block_tty_out_signal (void) | |
694 | { | |
695 | #ifdef SIGTTOU | |
696 | sigset_t blocked; | |
697 | sigemptyset (&blocked); | |
698 | sigaddset (&blocked, SIGTTOU); | |
699 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
700 | #endif | |
701 | } | |
702 | ||
703 | void | |
704 | unblock_tty_out_signal (void) | |
705 | { | |
706 | #ifdef SIGTTOU | |
707 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
708 | #endif | |
709 | } | |
710 | ||
322aea6d PE |
711 | /* Safely set a controlling terminal FD's process group to PGID. |
712 | If we are not in the foreground already, POSIX requires tcsetpgrp | |
713 | to deliver a SIGTTOU signal, which would stop us. This is an | |
714 | annoyance, so temporarily ignore the signal. | |
715 | ||
716 | In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so | |
717 | skip all this unless SIGTTOU is defined. */ | |
718 | static void | |
719 | tcsetpgrp_without_stopping (int fd, pid_t pgid) | |
720 | { | |
721 | #ifdef SIGTTOU | |
322aea6d | 722 | block_input (); |
b8956427 | 723 | block_tty_out_signal (); |
322aea6d | 724 | tcsetpgrp (fd, pgid); |
b8956427 | 725 | unblock_tty_out_signal (); |
322aea6d PE |
726 | unblock_input (); |
727 | #endif | |
728 | } | |
729 | ||
730 | /* Split off the foreground process group to Emacs alone. When we are | |
731 | in the foreground, but not started in our own process group, | |
732 | redirect the tty device handle FD to point to our own process | |
733 | group. FD must be the file descriptor of the controlling tty. */ | |
734 | static void | |
735 | narrow_foreground_group (int fd) | |
736 | { | |
737 | if (inherited_pgroup && setpgid (0, 0) == 0) | |
738 | tcsetpgrp_without_stopping (fd, getpid ()); | |
739 | } | |
740 | ||
741 | /* Set the tty to our original foreground group. */ | |
742 | static void | |
743 | widen_foreground_group (int fd) | |
744 | { | |
745 | if (inherited_pgroup && setpgid (0, inherited_pgroup) == 0) | |
746 | tcsetpgrp_without_stopping (fd, inherited_pgroup); | |
747 | } | |
748 | \f | |
68936329 JB |
749 | /* Getting and setting emacs_tty structures. */ |
750 | ||
653d4f43 PE |
751 | /* Set *TC to the parameters associated with the terminal FD, |
752 | or clear it if the parameters are not available. */ | |
753 | static void | |
971de7fb | 754 | emacs_get_tty (int fd, struct emacs_tty *settings) |
68936329 JB |
755 | { |
756 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 757 | #ifndef DOS_NT |
68936329 | 758 | /* We have those nifty POSIX tcmumbleattr functions. */ |
72af86bd | 759 | memset (&settings->main, 0, sizeof (settings->main)); |
653d4f43 | 760 | tcgetattr (fd, &settings->main); |
68936329 | 761 | #endif |
68936329 JB |
762 | } |
763 | ||
764 | ||
765 | /* Set the parameters of the tty on FD according to the contents of | |
653d4f43 PE |
766 | *SETTINGS. If FLUSHP, discard input. |
767 | Return 0 if all went well, and -1 (setting errno) if anything failed. */ | |
394049ec | 768 | |
653d4f43 PE |
769 | static int |
770 | emacs_set_tty (int fd, struct emacs_tty *settings, bool flushp) | |
68936329 JB |
771 | { |
772 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 773 | #ifndef DOS_NT |
e6cc3307 | 774 | int i; |
68936329 JB |
775 | /* We have those nifty POSIX tcmumbleattr functions. |
776 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 777 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
778 | able to perform any of the requested actions, even if some |
779 | of the requested actions could not be performed. | |
780 | We must read settings back to ensure tty setup properly. | |
781 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 782 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 783 | for (i = 0 ; i < 10 ; i++) |
394049ec | 784 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
785 | { |
786 | if (errno == EINTR) | |
787 | continue; | |
788 | else | |
789 | return -1; | |
790 | } | |
791 | else | |
792 | { | |
793 | struct termios new; | |
794 | ||
72af86bd | 795 | memset (&new, 0, sizeof (new)); |
68936329 JB |
796 | /* Get the current settings, and see if they're what we asked for. */ |
797 | tcgetattr (fd, &new); | |
e6cc3307 RS |
798 | /* We cannot use memcmp on the whole structure here because under |
799 | * aix386 the termios structure has some reserved field that may | |
800 | * not be filled in. | |
801 | */ | |
802 | if ( new.c_iflag == settings->main.c_iflag | |
803 | && new.c_oflag == settings->main.c_oflag | |
804 | && new.c_cflag == settings->main.c_cflag | |
805 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 806 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 807 | break; |
e6cc3307 RS |
808 | else |
809 | continue; | |
68936329 | 810 | } |
68936329 | 811 | #endif |
177c0ea7 | 812 | |
68936329 JB |
813 | /* We have survived the tempest. */ |
814 | return 0; | |
815 | } | |
816 | ||
817 | \f | |
86a5659e JB |
818 | |
819 | #ifdef F_SETOWN | |
d486344e | 820 | static int old_fcntl_owner[FD_SETSIZE]; |
86a5659e JB |
821 | #endif /* F_SETOWN */ |
822 | ||
86a5659e JB |
823 | /* This may also be defined in stdio, |
824 | but if so, this does no harm, | |
825 | and using the same name avoids wasting the other one's space. */ | |
826 | ||
9d9a7716 | 827 | #if defined (USG) |
86a5659e JB |
828 | unsigned char _sobuf[BUFSIZ+8]; |
829 | #else | |
830 | char _sobuf[BUFSIZ]; | |
831 | #endif | |
177c0ea7 | 832 | |
da8e1115 KL |
833 | /* Initialize the terminal mode on all tty devices that are currently |
834 | open. */ | |
835 | ||
08633194 | 836 | void |
28d440ab KL |
837 | init_all_sys_modes (void) |
838 | { | |
28d7d09f | 839 | struct tty_display_info *tty; |
16c290d8 | 840 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 841 | init_sys_modes (tty); |
28d440ab KL |
842 | } |
843 | ||
da8e1115 KL |
844 | /* Initialize the terminal mode on the given tty device. */ |
845 | ||
28d440ab | 846 | void |
971de7fb | 847 | init_sys_modes (struct tty_display_info *tty_out) |
86a5659e | 848 | { |
91bac16a | 849 | struct emacs_tty tty; |
e112cc37 | 850 | Lisp_Object terminal; |
91bac16a | 851 | |
4ec5cb58 RS |
852 | Vtty_erase_char = Qnil; |
853 | ||
86a5659e JB |
854 | if (noninteractive) |
855 | return; | |
856 | ||
0b0d3e0b KL |
857 | if (!tty_out->output) |
858 | return; /* The tty is suspended. */ | |
cf84bb53 | 859 | |
322aea6d PE |
860 | narrow_foreground_group (fileno (tty_out->input)); |
861 | ||
2246281f | 862 | if (! tty_out->old_tty) |
38182d90 | 863 | tty_out->old_tty = xmalloc (sizeof *tty_out->old_tty); |
cf84bb53 | 864 | |
12e610e8 | 865 | emacs_get_tty (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 866 | |
2246281f | 867 | tty = *tty_out->old_tty; |
86a5659e | 868 | |
a7ebc409 | 869 | #if !defined (DOS_NT) |
2246281f | 870 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 871 | |
2246281f KL |
872 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
873 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
874 | #ifdef INLCR /* I'm just being cautious, |
875 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 876 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 877 | #endif |
86a5659e | 878 | #ifdef ISTRIP |
2246281f | 879 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 880 | #endif |
2246281f KL |
881 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
882 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 883 | #ifdef IEXTEN |
2246281f | 884 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 885 | #endif |
2246281f KL |
886 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
887 | if (tty_out->flow_control) | |
888 | { | |
889 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 890 | #ifdef IXANY |
2246281f | 891 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 892 | #endif /* IXANY */ |
2246281f KL |
893 | } |
894 | else | |
895 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
896 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
897 | on output */ | |
898 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 899 | #ifdef CS8 |
2246281f KL |
900 | if (tty_out->meta_key) |
901 | { | |
902 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
903 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
904 | } | |
86a5659e | 905 | #endif |
e112cc37 ET |
906 | |
907 | XSETTERMINAL(terminal, tty_out->terminal); | |
908 | if (!NILP (Fcontrolling_tty_p (terminal))) | |
2246281f KL |
909 | { |
910 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
911 | /* Set up C-g for both SIGQUIT and SIGINT. | |
912 | We don't know which we will get, but we handle both alike | |
913 | so which one it really gives us does not matter. */ | |
914 | tty.main.c_cc[VQUIT] = quit_char; | |
915 | } | |
916 | else | |
917 | { | |
918 | /* We normally don't get interrupt or quit signals from tty | |
919 | devices other than our controlling terminal; therefore, | |
920 | we must handle C-g as normal input. Unfortunately, this | |
921 | means that the interrupt and quit feature must be | |
922 | disabled on secondary ttys, or we would not even see the | |
923 | keypress. | |
cf84bb53 | 924 | |
2246281f KL |
925 | Note that even though emacsclient could have special code |
926 | to pass SIGINT to Emacs, we should _not_ enable | |
927 | interrupt/quit keys for emacsclient frames. This means | |
928 | that we can't break out of loops in C code from a | |
929 | secondary tty frame, but we can always decide what | |
930 | display the C-g came from, which is more important from a | |
931 | usability point of view. (Consider the case when two | |
932 | people work together using the same Emacs instance.) */ | |
933 | tty.main.c_cc[VINTR] = CDISABLE; | |
934 | tty.main.c_cc[VQUIT] = CDISABLE; | |
935 | } | |
936 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
937 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 938 | #ifdef VSWTCH |
2246281f | 939 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 940 | of C-z */ |
86a5659e | 941 | #endif /* VSWTCH */ |
cf84bb53 | 942 | |
86a5659e | 943 | #ifdef VSUSP |
a7ebc409 | 944 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */ |
86a5659e JB |
945 | #endif /* VSUSP */ |
946 | #ifdef V_DSUSP | |
a7ebc409 | 947 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */ |
86a5659e | 948 | #endif /* V_DSUSP */ |
e2b40c23 | 949 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 950 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 951 | #endif /* VDSUSP */ |
92c995de | 952 | #ifdef VLNEXT |
2246281f | 953 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
954 | #endif /* VLNEXT */ |
955 | #ifdef VREPRINT | |
2246281f | 956 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
957 | #endif /* VREPRINT */ |
958 | #ifdef VWERASE | |
2246281f | 959 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
960 | #endif /* VWERASE */ |
961 | #ifdef VDISCARD | |
2246281f | 962 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 963 | #endif /* VDISCARD */ |
c179a6d1 | 964 | |
2246281f KL |
965 | if (tty_out->flow_control) |
966 | { | |
421dd92f | 967 | #ifdef VSTART |
2246281f | 968 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
969 | #endif /* VSTART */ |
970 | #ifdef VSTOP | |
2246281f | 971 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 972 | #endif /* VSTOP */ |
2246281f KL |
973 | } |
974 | else | |
975 | { | |
c179a6d1 | 976 | #ifdef VSTART |
2246281f | 977 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
978 | #endif /* VSTART */ |
979 | #ifdef VSTOP | |
2246281f | 980 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 981 | #endif /* VSTOP */ |
2246281f | 982 | } |
c179a6d1 | 983 | |
86a5659e | 984 | #ifdef AIX |
f5272227 KL |
985 | tty.main.c_cc[VSTRT] = CDISABLE; |
986 | tty.main.c_cc[VSTOP] = CDISABLE; | |
987 | tty.main.c_cc[VSUSP] = CDISABLE; | |
988 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
2246281f KL |
989 | if (tty_out->flow_control) |
990 | { | |
ac567c95 | 991 | #ifdef VSTART |
2246281f | 992 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
993 | #endif /* VSTART */ |
994 | #ifdef VSTOP | |
2246281f | 995 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 996 | #endif /* VSTOP */ |
2246281f KL |
997 | } |
998 | /* Also, PTY overloads NUL and BREAK. | |
999 | don't ignore break, but don't signal either, so it looks like NUL. | |
1000 | This really serves a purpose only if running in an XTERM window | |
1001 | or via TELNET or the like, but does no harm elsewhere. */ | |
1002 | tty.main.c_iflag &= ~IGNBRK; | |
1003 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e | 1004 | #endif |
fe03522b | 1005 | #endif /* not DOS_NT */ |
cf84bb53 | 1006 | |
207bdbdb | 1007 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
1008 | if (!tty_out->term_initted) |
1009 | internal_terminal_init (); | |
4e389d32 | 1010 | dos_ttraw (tty_out); |
207bdbdb | 1011 | #endif |
91bac16a | 1012 | |
12e610e8 | 1013 | emacs_set_tty (fileno (tty_out->input), &tty, 0); |
86a5659e | 1014 | |
2246281f KL |
1015 | /* This code added to insure that, if flow-control is not to be used, |
1016 | we have an unlocked terminal at the start. */ | |
91bac16a | 1017 | |
86a5659e | 1018 | #ifdef TCXONC |
0b0d3e0b | 1019 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e | 1020 | #endif |
86a5659e | 1021 | #ifdef TIOCSTART |
0b0d3e0b | 1022 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e | 1023 | #endif |
86a5659e | 1024 | |
a7ebc409 | 1025 | #if !defined (DOS_NT) |
51417996 | 1026 | #ifdef TCOON |
0b0d3e0b | 1027 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 1028 | #endif |
51417996 | 1029 | #endif |
d228f207 | 1030 | |
49cdacda | 1031 | #ifdef F_GETOWN |
2246281f | 1032 | if (interrupt_input) |
86a5659e | 1033 | { |
0b0d3e0b KL |
1034 | old_fcntl_owner[fileno (tty_out->input)] = |
1035 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
1036 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
1037 | init_sigio (fileno (tty_out->input)); | |
7e5a23bd | 1038 | #ifdef HAVE_GPM |
75a8734b | 1039 | if (gpm_tty == tty_out) |
3e748bcb | 1040 | { |
75a8734b | 1041 | /* Arrange for mouse events to give us SIGIO signals. */ |
3e748bcb | 1042 | fcntl (gpm_fd, F_SETOWN, getpid ()); |
57669cf1 | 1043 | fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK); |
3e748bcb NR |
1044 | init_sigio (gpm_fd); |
1045 | } | |
7e5a23bd | 1046 | #endif /* HAVE_GPM */ |
86a5659e JB |
1047 | } |
1048 | #endif /* F_GETOWN */ | |
86a5659e | 1049 | |
86a5659e JB |
1050 | #ifdef _IOFBF |
1051 | /* This symbol is defined on recent USG systems. | |
1052 | Someone says without this call USG won't really buffer the file | |
1053 | even with a call to setbuf. */ | |
0b0d3e0b | 1054 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1055 | #else |
0b0d3e0b | 1056 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 1057 | #endif |
4d553a13 | 1058 | |
69fb5031 JR |
1059 | if (tty_out->terminal->set_terminal_modes_hook) |
1060 | tty_out->terminal->set_terminal_modes_hook (tty_out->terminal); | |
4b311aaf | 1061 | |
9628b887 KL |
1062 | if (!tty_out->term_initted) |
1063 | { | |
1064 | Lisp_Object tail, frame; | |
1065 | FOR_EACH_FRAME (tail, frame) | |
1066 | { | |
daf01701 | 1067 | /* XXX This needs to be revised. */ |
9628b887 KL |
1068 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1069 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1070 | init_frame_faces (XFRAME (frame)); | |
1071 | } | |
1072 | } | |
045942b2 | 1073 | |
9628b887 | 1074 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1075 | { |
855a0da7 SM |
1076 | /* We used to call "direct_output_forward_char(0)" here, |
1077 | but it's not clear why, since it may not do anything anyway. */ | |
86a5659e JB |
1078 | } |
1079 | else | |
1080 | { | |
9628b887 | 1081 | Lisp_Object tail, frame; |
0137dbf7 | 1082 | frame_garbaged = 1; |
9628b887 KL |
1083 | FOR_EACH_FRAME (tail, frame) |
1084 | { | |
7ab98847 EZ |
1085 | if ((FRAME_TERMCAP_P (XFRAME (frame)) |
1086 | || FRAME_MSDOS_P (XFRAME (frame))) | |
9628b887 KL |
1087 | && FRAME_TTY (XFRAME (frame)) == tty_out) |
1088 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1089 | } | |
86a5659e | 1090 | } |
91bac16a | 1091 | |
9628b887 | 1092 | tty_out->term_initted = 1; |
86a5659e JB |
1093 | } |
1094 | ||
653d4f43 | 1095 | /* Return true if safe to use tabs in output. |
86a5659e | 1096 | At the time this is called, init_sys_modes has not been done yet. */ |
177c0ea7 | 1097 | |
653d4f43 | 1098 | bool |
16c290d8 | 1099 | tabs_safe_p (int fd) |
86a5659e | 1100 | { |
6548cf00 | 1101 | struct emacs_tty etty; |
91bac16a | 1102 | |
12e610e8 DN |
1103 | emacs_get_tty (fd, &etty); |
1104 | #ifndef DOS_NT | |
1105 | #ifdef TABDLY | |
1106 | return ((etty.main.c_oflag & TABDLY) != TAB3); | |
1107 | #else /* not TABDLY */ | |
1108 | return 1; | |
1109 | #endif /* not TABDLY */ | |
1110 | #else /* DOS_NT */ | |
1111 | return 0; | |
1112 | #endif /* DOS_NT */ | |
86a5659e | 1113 | } |
73d5358f | 1114 | \f |
86a5659e | 1115 | /* Get terminal size from system. |
73d5358f RS |
1116 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1117 | We store 0 if there's no valid information. */ | |
86a5659e | 1118 | |
08633194 | 1119 | void |
16c290d8 | 1120 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1121 | { |
e16e55d4 | 1122 | #if defined TIOCGWINSZ |
91bac16a JB |
1123 | |
1124 | /* BSD-style. */ | |
86a5659e | 1125 | struct winsize size; |
91bac16a | 1126 | |
16c290d8 | 1127 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1128 | *widthp = *heightp = 0; |
1129 | else | |
1130 | { | |
1131 | *widthp = size.ws_col; | |
1132 | *heightp = size.ws_row; | |
1133 | } | |
1134 | ||
e16e55d4 | 1135 | #elif defined TIOCGSIZE |
91bac16a JB |
1136 | |
1137 | /* SunOS - style. */ | |
177c0ea7 | 1138 | struct ttysize size; |
91bac16a | 1139 | |
16c290d8 | 1140 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1141 | *widthp = *heightp = 0; |
1142 | else | |
1143 | { | |
1144 | *widthp = size.ts_cols; | |
1145 | *heightp = size.ts_lines; | |
1146 | } | |
1147 | ||
e16e55d4 JB |
1148 | #elif defined WINDOWSNT |
1149 | ||
1150 | CONSOLE_SCREEN_BUFFER_INFO info; | |
1151 | if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info)) | |
1152 | { | |
1153 | *widthp = info.srWindow.Right - info.srWindow.Left + 1; | |
1154 | *heightp = info.srWindow.Bottom - info.srWindow.Top + 1; | |
1155 | } | |
1156 | else | |
1157 | *widthp = *heightp = 0; | |
1158 | ||
1159 | #elif defined MSDOS | |
1160 | ||
207bdbdb RS |
1161 | *widthp = ScreenCols (); |
1162 | *heightp = ScreenRows (); | |
e16e55d4 | 1163 | |
86a5659e | 1164 | #else /* system doesn't know size */ |
e16e55d4 | 1165 | |
86a5659e JB |
1166 | *widthp = 0; |
1167 | *heightp = 0; | |
e16e55d4 | 1168 | |
207bdbdb | 1169 | #endif |
86a5659e | 1170 | } |
91bac16a | 1171 | |
73d5358f | 1172 | /* Set the logical window size associated with descriptor FD |
9c05bccf PE |
1173 | to HEIGHT and WIDTH. This is used mainly with ptys. |
1174 | Return a negative value on failure. */ | |
73d5358f RS |
1175 | |
1176 | int | |
971de7fb | 1177 | set_window_size (int fd, int height, int width) |
73d5358f RS |
1178 | { |
1179 | #ifdef TIOCSWINSZ | |
1180 | ||
1181 | /* BSD-style. */ | |
1182 | struct winsize size; | |
1183 | size.ws_row = height; | |
1184 | size.ws_col = width; | |
1185 | ||
9c05bccf | 1186 | return ioctl (fd, TIOCSWINSZ, &size); |
73d5358f RS |
1187 | |
1188 | #else | |
1189 | #ifdef TIOCSSIZE | |
1190 | ||
1191 | /* SunOS - style. */ | |
177c0ea7 | 1192 | struct ttysize size; |
73d5358f RS |
1193 | size.ts_lines = height; |
1194 | size.ts_cols = width; | |
1195 | ||
9c05bccf | 1196 | return ioctl (fd, TIOCGSIZE, &size); |
73d5358f RS |
1197 | #else |
1198 | return -1; | |
1199 | #endif /* not SunOS-style */ | |
1200 | #endif /* not BSD-style */ | |
1201 | } | |
1202 | ||
86a5659e | 1203 | \f |
da8e1115 KL |
1204 | |
1205 | /* Prepare all terminal devices for exiting Emacs. */ | |
1206 | ||
28d440ab KL |
1207 | void |
1208 | reset_all_sys_modes (void) | |
1209 | { | |
28d7d09f | 1210 | struct tty_display_info *tty; |
16c290d8 | 1211 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1212 | reset_sys_modes (tty); |
28d440ab KL |
1213 | } |
1214 | ||
0a125897 | 1215 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1216 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1217 | |
08633194 | 1218 | void |
971de7fb | 1219 | reset_sys_modes (struct tty_display_info *tty_out) |
86a5659e JB |
1220 | { |
1221 | if (noninteractive) | |
1222 | { | |
1223 | fflush (stdout); | |
1224 | return; | |
1225 | } | |
9628b887 | 1226 | if (!tty_out->term_initted) |
86a5659e | 1227 | return; |
da8e1115 | 1228 | |
0b0d3e0b KL |
1229 | if (!tty_out->output) |
1230 | return; /* The tty is suspended. */ | |
cf84bb53 | 1231 | |
da8e1115 KL |
1232 | /* Go to and clear the last line of the terminal. */ |
1233 | ||
0a125897 | 1234 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
cf84bb53 | 1235 | |
da8e1115 KL |
1236 | /* Code adapted from tty_clear_end_of_line. */ |
1237 | if (tty_out->TS_clr_line) | |
1238 | { | |
1239 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1240 | } | |
1241 | else | |
1242 | { /* have to do it the hard way */ | |
1243 | int i; | |
ed8dad6b | 1244 | tty_turn_off_insert (tty_out); |
cf84bb53 | 1245 | |
da8e1115 | 1246 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1247 | { |
1248 | fputc (' ', tty_out->output); | |
1249 | } | |
da8e1115 | 1250 | } |
cf84bb53 | 1251 | |
0a125897 | 1252 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 | 1253 | fflush (tty_out->output); |
cf84bb53 | 1254 | |
69fb5031 JR |
1255 | if (tty_out->terminal->reset_terminal_modes_hook) |
1256 | tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal); | |
2f98e6e3 | 1257 | |
86a5659e | 1258 | /* Avoid possible loss of output when changing terminal modes. */ |
47d7532e PE |
1259 | while (fdatasync (fileno (tty_out->output)) != 0 && errno == EINTR) |
1260 | continue; | |
91bac16a | 1261 | |
49cdacda PE |
1262 | #ifndef DOS_NT |
1263 | #ifdef F_SETOWN | |
86a5659e JB |
1264 | if (interrupt_input) |
1265 | { | |
0b0d3e0b KL |
1266 | reset_sigio (fileno (tty_out->input)); |
1267 | fcntl (fileno (tty_out->input), F_SETOWN, | |
1268 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
1269 | } |
1270 | #endif /* F_SETOWN */ | |
0b0d3e0b | 1271 | fcntl (fileno (tty_out->input), F_SETFL, |
49cdacda | 1272 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NONBLOCK); |
a6b00318 | 1273 | #endif |
91bac16a | 1274 | |
fca177d4 | 1275 | if (tty_out->old_tty) |
12e610e8 | 1276 | while (emacs_set_tty (fileno (tty_out->input), |
fca177d4 | 1277 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 1278 | ; |
86a5659e | 1279 | |
207bdbdb RS |
1280 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1281 | dos_ttcooked (); | |
1282 | #endif | |
1283 | ||
322aea6d | 1284 | widen_foreground_group (fileno (tty_out->input)); |
86a5659e JB |
1285 | } |
1286 | \f | |
1287 | #ifdef HAVE_PTYS | |
1288 | ||
1289 | /* Set up the proper status flags for use of a pty. */ | |
1290 | ||
08633194 | 1291 | void |
971de7fb | 1292 | setup_pty (int fd) |
86a5659e JB |
1293 | { |
1294 | /* I'm told that TOICREMOTE does not mean control chars | |
1295 | "can't be sent" but rather that they don't have | |
1296 | input-editing or signaling effects. | |
1297 | That should be good, because we have other ways | |
1298 | to do those things in Emacs. | |
1299 | However, telnet mode seems not to work on 4.2. | |
1300 | So TIOCREMOTE is turned off now. */ | |
1301 | ||
1302 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1303 | will hang. In particular, the "timeout" feature (which | |
1304 | causes a read to return if there is no data available) | |
1305 | does this. Also it is known that telnet mode will hang | |
1306 | in such a way that Emacs must be stopped (perhaps this | |
1307 | is the same problem). | |
177c0ea7 | 1308 | |
86a5659e JB |
1309 | If TIOCREMOTE is turned off, then there is a bug in |
1310 | hp-ux which sometimes loses data. Apparently the | |
1311 | code which blocks the master process when the internal | |
1312 | buffer fills up does not work. Other than this, | |
1313 | though, everything else seems to work fine. | |
177c0ea7 | 1314 | |
86a5659e JB |
1315 | Since the latter lossage is more benign, we may as well |
1316 | lose that way. -- cph */ | |
1317 | #ifdef FIONBIO | |
5e617bc2 | 1318 | #if defined (UNIX98_PTYS) |
86a5659e JB |
1319 | { |
1320 | int on = 1; | |
1321 | ioctl (fd, FIONBIO, &on); | |
1322 | } | |
1323 | #endif | |
1324 | #endif | |
86a5659e JB |
1325 | } |
1326 | #endif /* HAVE_PTYS */ | |
1327 | \f | |
f8a80313 RS |
1328 | #ifdef HAVE_SOCKETS |
1329 | #include <sys/socket.h> | |
1330 | #include <netdb.h> | |
1331 | #endif /* HAVE_SOCKETS */ | |
f8a80313 | 1332 | |
8581cd64 KH |
1333 | #ifdef TRY_AGAIN |
1334 | #ifndef HAVE_H_ERRNO | |
1335 | extern int h_errno; | |
1336 | #endif | |
1337 | #endif /* TRY_AGAIN */ | |
1338 | ||
c0c86835 | 1339 | void |
971de7fb | 1340 | init_system_name (void) |
86a5659e | 1341 | { |
210b2b4f | 1342 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
1343 | struct utsname uts; |
1344 | uname (&uts); | |
1345 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 1346 | #else /* HAVE_GETHOSTNAME */ |
653d4f43 PE |
1347 | char *hostname_alloc = NULL; |
1348 | char hostname_buf[256]; | |
1349 | ptrdiff_t hostname_size = sizeof hostname_buf; | |
1350 | char *hostname = hostname_buf; | |
c0c86835 KH |
1351 | |
1352 | /* Try to get the host name; if the buffer is too short, try | |
1353 | again. Apparently, the only indication gethostname gives of | |
1354 | whether the buffer was large enough is the presence or absence | |
1355 | of a '\0' in the string. Eech. */ | |
1356 | for (;;) | |
1357 | { | |
1358 | gethostname (hostname, hostname_size - 1); | |
1359 | hostname[hostname_size - 1] = '\0'; | |
1360 | ||
1361 | /* Was the buffer large enough for the '\0'? */ | |
1362 | if (strlen (hostname) < hostname_size - 1) | |
1363 | break; | |
1364 | ||
653d4f43 PE |
1365 | hostname = hostname_alloc = xpalloc (hostname_alloc, &hostname_size, 1, |
1366 | min (PTRDIFF_MAX, SIZE_MAX), 1); | |
c0c86835 | 1367 | } |
67004ffb | 1368 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
1369 | /* Turn the hostname into the official, fully-qualified hostname. |
1370 | Don't do this if we're going to dump; this can confuse system | |
1371 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 1372 | #ifndef CANNOT_DUMP |
c0c86835 | 1373 | if (initialized) |
67004ffb | 1374 | #endif /* not CANNOT_DUMP */ |
8966b757 | 1375 | if (! strchr (hostname, '.')) |
960d894c | 1376 | { |
960d894c | 1377 | int count; |
3d66b985 JD |
1378 | #ifdef HAVE_GETADDRINFO |
1379 | struct addrinfo *res; | |
1380 | struct addrinfo hints; | |
1381 | int ret; | |
1382 | ||
cf84bb53 | 1383 | memset (&hints, 0, sizeof (hints)); |
3d66b985 JD |
1384 | hints.ai_socktype = SOCK_STREAM; |
1385 | hints.ai_flags = AI_CANONNAME; | |
1386 | ||
960d894c KH |
1387 | for (count = 0;; count++) |
1388 | { | |
3d66b985 JD |
1389 | if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0 |
1390 | || ret != EAI_AGAIN) | |
1391 | break; | |
1392 | ||
1393 | if (count >= 5) | |
1394 | break; | |
1395 | Fsleep_for (make_number (1), Qnil); | |
1396 | } | |
1397 | ||
1398 | if (ret == 0) | |
1399 | { | |
1400 | struct addrinfo *it = res; | |
1401 | while (it) | |
1402 | { | |
1403 | char *fqdn = it->ai_canonname; | |
8966b757 | 1404 | if (fqdn && strchr (fqdn, '.') |
3d66b985 JD |
1405 | && strcmp (fqdn, "localhost.localdomain") != 0) |
1406 | break; | |
1407 | it = it->ai_next; | |
1408 | } | |
1409 | if (it) | |
1410 | { | |
653d4f43 PE |
1411 | ptrdiff_t len = strlen (it->ai_canonname); |
1412 | if (hostname_size <= len) | |
1413 | { | |
1414 | hostname_size = len + 1; | |
1415 | hostname = hostname_alloc = xrealloc (hostname_alloc, | |
1416 | hostname_size); | |
1417 | } | |
3d66b985 JD |
1418 | strcpy (hostname, it->ai_canonname); |
1419 | } | |
1420 | freeaddrinfo (res); | |
1421 | } | |
1422 | #else /* !HAVE_GETADDRINFO */ | |
1423 | struct hostent *hp; | |
1424 | for (count = 0;; count++) | |
1425 | { | |
1426 | ||
e24f1d55 | 1427 | #ifdef TRY_AGAIN |
960d894c | 1428 | h_errno = 0; |
e24f1d55 | 1429 | #endif |
960d894c | 1430 | hp = gethostbyname (hostname); |
efa04277 | 1431 | #ifdef TRY_AGAIN |
960d894c KH |
1432 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
1433 | #endif | |
3d66b985 | 1434 | |
960d894c | 1435 | break; |
3d66b985 | 1436 | |
960d894c KH |
1437 | if (count >= 5) |
1438 | break; | |
1439 | Fsleep_for (make_number (1), Qnil); | |
1440 | } | |
3d66b985 | 1441 | |
960d894c KH |
1442 | if (hp) |
1443 | { | |
1444 | char *fqdn = (char *) hp->h_name; | |
960d894c | 1445 | |
8966b757 | 1446 | if (!strchr (fqdn, '.')) |
960d894c KH |
1447 | { |
1448 | /* We still don't have a fully qualified domain name. | |
1449 | Try to find one in the list of alternate names */ | |
1450 | char **alias = hp->h_aliases; | |
923721f4 | 1451 | while (*alias |
8966b757 | 1452 | && (!strchr (*alias, '.') |
923721f4 | 1453 | || !strcmp (*alias, "localhost.localdomain"))) |
960d894c KH |
1454 | alias++; |
1455 | if (*alias) | |
1456 | fqdn = *alias; | |
1457 | } | |
1458 | hostname = fqdn; | |
960d894c | 1459 | } |
3d66b985 | 1460 | #endif /* !HAVE_GETADDRINFO */ |
960d894c | 1461 | } |
67004ffb | 1462 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 1463 | Vsystem_name = build_string (hostname); |
653d4f43 | 1464 | xfree (hostname_alloc); |
67004ffb | 1465 | #endif /* HAVE_GETHOSTNAME */ |
c0c86835 | 1466 | { |
653d4f43 PE |
1467 | char *p; |
1468 | for (p = SSDATA (Vsystem_name); *p; p++) | |
c0c86835 KH |
1469 | if (*p == ' ' || *p == '\t') |
1470 | *p = '-'; | |
1471 | } | |
67004ffb | 1472 | } |
86a5659e | 1473 | \f |
1fa53021 | 1474 | sigset_t empty_mask; |
86a5659e | 1475 | |
4d7e6e51 PE |
1476 | static struct sigaction process_fatal_action; |
1477 | ||
1478 | static int | |
1479 | emacs_sigaction_flags (void) | |
86a5659e | 1480 | { |
4d7e6e51 | 1481 | #ifdef SA_RESTART |
0caaedb1 PE |
1482 | /* SA_RESTART causes interruptible functions with timeouts (e.g., |
1483 | 'select') to reset their timeout on some platforms (e.g., | |
1484 | HP-UX 11), which is not what we want. Also, when Emacs is | |
1485 | interactive, we don't want SA_RESTART because we need to poll | |
275464e7 | 1486 | for pending input so we need long-running syscalls to be interrupted |
4d7e6e51 PE |
1487 | after a signal that sets pending_signals. |
1488 | ||
1489 | Non-interactive keyboard input goes through stdio, where we | |
1490 | always want restartable system calls. */ | |
ef874e3d | 1491 | if (noninteractive) |
4d7e6e51 | 1492 | return SA_RESTART; |
e065a56e | 1493 | #endif |
4d7e6e51 PE |
1494 | return 0; |
1495 | } | |
1496 | ||
1497 | /* Store into *ACTION a signal action suitable for Emacs, with handler | |
1498 | HANDLER. */ | |
1499 | void | |
1500 | emacs_sigaction_init (struct sigaction *action, signal_handler_t handler) | |
1501 | { | |
1502 | sigemptyset (&action->sa_mask); | |
1503 | ||
1504 | /* When handling a signal, block nonfatal system signals that are caught | |
1505 | by Emacs. This makes race conditions less likely. */ | |
1506 | sigaddset (&action->sa_mask, SIGALRM); | |
4d7e6e51 | 1507 | sigaddset (&action->sa_mask, SIGCHLD); |
4d7e6e51 PE |
1508 | #ifdef SIGDANGER |
1509 | sigaddset (&action->sa_mask, SIGDANGER); | |
1510 | #endif | |
d89460ed PE |
1511 | #ifdef PROFILER_CPU_SUPPORT |
1512 | sigaddset (&action->sa_mask, SIGPROF); | |
1513 | #endif | |
4d7e6e51 PE |
1514 | #ifdef SIGWINCH |
1515 | sigaddset (&action->sa_mask, SIGWINCH); | |
1516 | #endif | |
1517 | if (! noninteractive) | |
1518 | { | |
1519 | sigaddset (&action->sa_mask, SIGINT); | |
1520 | sigaddset (&action->sa_mask, SIGQUIT); | |
1521 | #ifdef USABLE_SIGIO | |
1522 | sigaddset (&action->sa_mask, SIGIO); | |
1523 | #endif | |
1524 | } | |
1525 | ||
1526 | if (! IEEE_FLOATING_POINT) | |
1527 | sigaddset (&action->sa_mask, SIGFPE); | |
1528 | ||
1529 | action->sa_handler = handler; | |
1530 | action->sa_flags = emacs_sigaction_flags (); | |
86a5659e JB |
1531 | } |
1532 | ||
20ef56db | 1533 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
0caaedb1 | 1534 | static pthread_t main_thread; |
20ef56db PE |
1535 | #endif |
1536 | ||
4d7e6e51 PE |
1537 | /* SIG has arrived at the current process. Deliver it to the main |
1538 | thread, which should handle it with HANDLER. | |
1539 | ||
1540 | If we are on the main thread, handle the signal SIG with HANDLER. | |
20ef56db PE |
1541 | Otherwise, redirect the signal to the main thread, blocking it from |
1542 | this thread. POSIX says any thread can receive a signal that is | |
1543 | associated with a process, process group, or asynchronous event. | |
1544 | On GNU/Linux that is not true, but for other systems (FreeBSD at | |
1545 | least) it is. */ | |
1546 | void | |
4d7e6e51 | 1547 | deliver_process_signal (int sig, signal_handler_t handler) |
20ef56db PE |
1548 | { |
1549 | /* Preserve errno, to avoid race conditions with signal handlers that | |
1550 | might change errno. Races can occur even in single-threaded hosts. */ | |
1551 | int old_errno = errno; | |
1552 | ||
1553 | bool on_main_thread = true; | |
1554 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1555 | if (! pthread_equal (pthread_self (), main_thread)) | |
1556 | { | |
1557 | sigset_t blocked; | |
1558 | sigemptyset (&blocked); | |
1559 | sigaddset (&blocked, sig); | |
1560 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
1561 | pthread_kill (main_thread, sig); | |
1562 | on_main_thread = false; | |
1563 | } | |
1564 | #endif | |
1565 | if (on_main_thread) | |
1566 | handler (sig); | |
1567 | ||
1568 | errno = old_errno; | |
1569 | } | |
4d7e6e51 PE |
1570 | |
1571 | /* Static location to save a fatal backtrace in a thread. | |
1572 | FIXME: If two subsidiary threads fail simultaneously, the resulting | |
1573 | backtrace may be garbage. */ | |
1574 | enum { BACKTRACE_LIMIT_MAX = 500 }; | |
1575 | static void *thread_backtrace_buffer[BACKTRACE_LIMIT_MAX + 1]; | |
1576 | static int thread_backtrace_npointers; | |
1577 | ||
1578 | /* SIG has arrived at the current thread. | |
1579 | If we are on the main thread, handle the signal SIG with HANDLER. | |
1580 | Otherwise, this is a fatal error in the handling thread. */ | |
1581 | static void | |
1582 | deliver_thread_signal (int sig, signal_handler_t handler) | |
1583 | { | |
1584 | int old_errno = errno; | |
1585 | ||
1586 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1587 | if (! pthread_equal (pthread_self (), main_thread)) | |
1588 | { | |
1589 | thread_backtrace_npointers | |
1590 | = backtrace (thread_backtrace_buffer, BACKTRACE_LIMIT_MAX); | |
1591 | sigaction (sig, &process_fatal_action, 0); | |
1592 | pthread_kill (main_thread, sig); | |
1593 | ||
1594 | /* Avoid further damage while the main thread is exiting. */ | |
1595 | while (1) | |
1596 | sigsuspend (&empty_mask); | |
1597 | } | |
1598 | #endif | |
1599 | ||
1600 | handler (sig); | |
1601 | errno = old_errno; | |
1602 | } | |
86a5659e | 1603 | \f |
aa1ba90e PE |
1604 | #if !HAVE_DECL_SYS_SIGLIST |
1605 | # undef sys_siglist | |
c622b48f PE |
1606 | # ifdef _sys_siglist |
1607 | # define sys_siglist _sys_siglist | |
9bd36682 | 1608 | # elif HAVE_DECL___SYS_SIGLIST |
57f8c490 | 1609 | # define sys_siglist __sys_siglist |
c622b48f PE |
1610 | # else |
1611 | # define sys_siglist my_sys_siglist | |
aa1ba90e | 1612 | static char const *sys_siglist[NSIG]; |
c622b48f PE |
1613 | # endif |
1614 | #endif | |
1615 | ||
1616 | #ifdef _sys_nsig | |
1617 | # define sys_siglist_entries _sys_nsig | |
1618 | #else | |
1619 | # define sys_siglist_entries NSIG | |
ca9c0567 PE |
1620 | #endif |
1621 | ||
4d7e6e51 PE |
1622 | /* Handle bus errors, invalid instruction, etc. */ |
1623 | static void | |
1624 | handle_fatal_signal (int sig) | |
1625 | { | |
9d4dcdc9 | 1626 | terminate_due_to_signal (sig, 40); |
4d7e6e51 PE |
1627 | } |
1628 | ||
1629 | static void | |
1630 | deliver_fatal_signal (int sig) | |
1631 | { | |
1632 | deliver_process_signal (sig, handle_fatal_signal); | |
1633 | } | |
1634 | ||
1635 | static void | |
1636 | deliver_fatal_thread_signal (int sig) | |
1637 | { | |
1638 | deliver_thread_signal (sig, handle_fatal_signal); | |
1639 | } | |
1640 | ||
1641 | static _Noreturn void | |
1642 | handle_arith_signal (int sig) | |
1643 | { | |
1644 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
1645 | xsignal0 (Qarith_error); | |
1646 | } | |
1647 | ||
1648 | static void | |
1649 | deliver_arith_signal (int sig) | |
1650 | { | |
1651 | deliver_thread_signal (sig, handle_arith_signal); | |
1652 | } | |
1653 | ||
b6f960a0 PE |
1654 | #ifdef SIGDANGER |
1655 | ||
1656 | /* Handler for SIGDANGER. */ | |
1657 | static void | |
1658 | handle_danger_signal (int sig) | |
1659 | { | |
1660 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
1661 | ||
1662 | /* It might be unsafe to call do_auto_save now. */ | |
1663 | force_auto_save_soon (); | |
1664 | } | |
1665 | ||
1666 | static void | |
1667 | deliver_danger_signal (int sig) | |
1668 | { | |
1669 | deliver_process_signal (sig, handle_danger_signal); | |
1670 | } | |
1671 | #endif | |
1672 | ||
4d7e6e51 PE |
1673 | /* Treat SIG as a terminating signal, unless it is already ignored and |
1674 | we are in --batch mode. Among other things, this makes nohup work. */ | |
1675 | static void | |
1676 | maybe_fatal_sig (int sig) | |
1677 | { | |
1678 | bool catch_sig = !noninteractive; | |
1679 | if (!catch_sig) | |
1680 | { | |
1681 | struct sigaction old_action; | |
1682 | sigaction (sig, 0, &old_action); | |
1683 | catch_sig = old_action.sa_handler != SIG_IGN; | |
1684 | } | |
1685 | if (catch_sig) | |
1686 | sigaction (sig, &process_fatal_action, 0); | |
1687 | } | |
1688 | ||
ca9c0567 | 1689 | void |
4d7e6e51 | 1690 | init_signals (bool dumping) |
ca9c0567 | 1691 | { |
4d7e6e51 PE |
1692 | struct sigaction thread_fatal_action; |
1693 | struct sigaction action; | |
1694 | ||
ca9c0567 | 1695 | sigemptyset (&empty_mask); |
ca9c0567 | 1696 | |
20ef56db PE |
1697 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
1698 | main_thread = pthread_self (); | |
1699 | #endif | |
1700 | ||
c622b48f | 1701 | #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist |
ca9c0567 PE |
1702 | if (! initialized) |
1703 | { | |
ca9c0567 | 1704 | sys_siglist[SIGABRT] = "Aborted"; |
ca9c0567 PE |
1705 | # ifdef SIGAIO |
1706 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
1707 | # endif | |
ca9c0567 | 1708 | sys_siglist[SIGALRM] = "Alarm clock"; |
ca9c0567 PE |
1709 | # ifdef SIGBUS |
1710 | sys_siglist[SIGBUS] = "Bus error"; | |
1711 | # endif | |
ca9c0567 | 1712 | sys_siglist[SIGCHLD] = "Child status changed"; |
ca9c0567 PE |
1713 | # ifdef SIGCONT |
1714 | sys_siglist[SIGCONT] = "Continued"; | |
1715 | # endif | |
1716 | # ifdef SIGDANGER | |
1717 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
1718 | # endif | |
1719 | # ifdef SIGDGNOTIFY | |
1720 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
1721 | # endif | |
1722 | # ifdef SIGEMT | |
1723 | sys_siglist[SIGEMT] = "Emulation trap"; | |
1724 | # endif | |
ca9c0567 | 1725 | sys_siglist[SIGFPE] = "Arithmetic exception"; |
ca9c0567 PE |
1726 | # ifdef SIGFREEZE |
1727 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
1728 | # endif | |
1729 | # ifdef SIGGRANT | |
1730 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
1731 | # endif | |
ca9c0567 | 1732 | sys_siglist[SIGHUP] = "Hangup"; |
ca9c0567 | 1733 | sys_siglist[SIGILL] = "Illegal instruction"; |
ca9c0567 | 1734 | sys_siglist[SIGINT] = "Interrupt"; |
ca9c0567 PE |
1735 | # ifdef SIGIO |
1736 | sys_siglist[SIGIO] = "I/O possible"; | |
1737 | # endif | |
1738 | # ifdef SIGIOINT | |
1739 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
1740 | # endif | |
1741 | # ifdef SIGIOT | |
1742 | sys_siglist[SIGIOT] = "IOT trap"; | |
1743 | # endif | |
ca9c0567 | 1744 | sys_siglist[SIGKILL] = "Killed"; |
ca9c0567 PE |
1745 | # ifdef SIGLOST |
1746 | sys_siglist[SIGLOST] = "Resource lost"; | |
1747 | # endif | |
1748 | # ifdef SIGLWP | |
1749 | sys_siglist[SIGLWP] = "SIGLWP"; | |
1750 | # endif | |
1751 | # ifdef SIGMSG | |
1752 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
1753 | # endif | |
1754 | # ifdef SIGPHONE | |
1755 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
1756 | # endif | |
ca9c0567 | 1757 | sys_siglist[SIGPIPE] = "Broken pipe"; |
ca9c0567 PE |
1758 | # ifdef SIGPOLL |
1759 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
1760 | # endif | |
1761 | # ifdef SIGPROF | |
1762 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
1763 | # endif | |
1764 | # ifdef SIGPTY | |
1765 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
1766 | # endif | |
1767 | # ifdef SIGPWR | |
1768 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
1769 | # endif | |
ca9c0567 | 1770 | sys_siglist[SIGQUIT] = "Quit"; |
ca9c0567 | 1771 | # ifdef SIGRETRACT |
40ba43b4 | 1772 | sys_siglist[SIGRETRACT] = "Need to relinquish monitor mode"; |
ca9c0567 PE |
1773 | # endif |
1774 | # ifdef SIGSAK | |
1775 | sys_siglist[SIGSAK] = "Secure attention"; | |
1776 | # endif | |
ca9c0567 | 1777 | sys_siglist[SIGSEGV] = "Segmentation violation"; |
ca9c0567 PE |
1778 | # ifdef SIGSOUND |
1779 | sys_siglist[SIGSOUND] = "Sound completed"; | |
1780 | # endif | |
1781 | # ifdef SIGSTOP | |
1782 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
1783 | # endif | |
1784 | # ifdef SIGSTP | |
1785 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
1786 | # endif | |
1787 | # ifdef SIGSYS | |
1788 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
1789 | # endif | |
ca9c0567 | 1790 | sys_siglist[SIGTERM] = "Terminated"; |
ca9c0567 PE |
1791 | # ifdef SIGTHAW |
1792 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
1793 | # endif | |
1794 | # ifdef SIGTRAP | |
1795 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
1796 | # endif | |
1797 | # ifdef SIGTSTP | |
1798 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
1799 | # endif | |
1800 | # ifdef SIGTTIN | |
1801 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
1802 | # endif | |
1803 | # ifdef SIGTTOU | |
1804 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
1805 | # endif | |
1806 | # ifdef SIGURG | |
1807 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
1808 | # endif | |
1809 | # ifdef SIGUSR1 | |
1810 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
1811 | # endif | |
1812 | # ifdef SIGUSR2 | |
1813 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
1814 | # endif | |
1815 | # ifdef SIGVTALRM | |
1816 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
1817 | # endif | |
1818 | # ifdef SIGWAITING | |
1819 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
1820 | # endif | |
1821 | # ifdef SIGWINCH | |
1822 | sys_siglist[SIGWINCH] = "Window size changed"; | |
1823 | # endif | |
1824 | # ifdef SIGWIND | |
1825 | sys_siglist[SIGWIND] = "SIGWIND"; | |
1826 | # endif | |
1827 | # ifdef SIGXCPU | |
1828 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
1829 | # endif | |
1830 | # ifdef SIGXFSZ | |
1831 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
1832 | # endif | |
1833 | } | |
c622b48f | 1834 | #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */ |
4d7e6e51 PE |
1835 | |
1836 | /* Don't alter signal handlers if dumping. On some machines, | |
1837 | changing signal handlers sets static data that would make signals | |
1838 | fail to work right when the dumped Emacs is run. */ | |
1839 | if (dumping) | |
1840 | return; | |
1841 | ||
1842 | sigfillset (&process_fatal_action.sa_mask); | |
1843 | process_fatal_action.sa_handler = deliver_fatal_signal; | |
62a1d661 | 1844 | process_fatal_action.sa_flags = emacs_sigaction_flags (); |
4d7e6e51 PE |
1845 | |
1846 | sigfillset (&thread_fatal_action.sa_mask); | |
1847 | thread_fatal_action.sa_handler = deliver_fatal_thread_signal; | |
1848 | thread_fatal_action.sa_flags = process_fatal_action.sa_flags; | |
1849 | ||
1850 | /* SIGINT may need special treatment on MS-Windows. See | |
1851 | http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html | |
1852 | Please update the doc of kill-emacs, kill-emacs-hook, and | |
1853 | NEWS if you change this. */ | |
1854 | ||
1855 | maybe_fatal_sig (SIGHUP); | |
1856 | maybe_fatal_sig (SIGINT); | |
1857 | maybe_fatal_sig (SIGTERM); | |
1858 | ||
1859 | /* Emacs checks for write errors, so it can safely ignore SIGPIPE. | |
1860 | However, in batch mode leave SIGPIPE alone, as that causes Emacs | |
1861 | to behave more like typical batch applications do. */ | |
1862 | if (! noninteractive) | |
1863 | signal (SIGPIPE, SIG_IGN); | |
1864 | ||
1865 | sigaction (SIGQUIT, &process_fatal_action, 0); | |
1866 | sigaction (SIGILL, &thread_fatal_action, 0); | |
1867 | sigaction (SIGTRAP, &thread_fatal_action, 0); | |
1868 | ||
1869 | /* Typically SIGFPE is thread-specific and is fatal, like SIGILL. | |
1870 | But on a non-IEEE host SIGFPE can come from a trap in the Lisp | |
1871 | interpreter's floating point operations, so treat SIGFPE as an | |
1872 | arith-error if it arises in the main thread. */ | |
1873 | if (IEEE_FLOATING_POINT) | |
1874 | sigaction (SIGFPE, &thread_fatal_action, 0); | |
1875 | else | |
1876 | { | |
1877 | emacs_sigaction_init (&action, deliver_arith_signal); | |
1878 | sigaction (SIGFPE, &action, 0); | |
1879 | } | |
1880 | ||
1881 | #ifdef SIGUSR1 | |
1882 | add_user_signal (SIGUSR1, "sigusr1"); | |
1883 | #endif | |
1884 | #ifdef SIGUSR2 | |
1885 | add_user_signal (SIGUSR2, "sigusr2"); | |
1886 | #endif | |
1887 | sigaction (SIGABRT, &thread_fatal_action, 0); | |
1888 | #ifdef SIGPRE | |
1889 | sigaction (SIGPRE, &thread_fatal_action, 0); | |
1890 | #endif | |
1891 | #ifdef SIGORE | |
1892 | sigaction (SIGORE, &thread_fatal_action, 0); | |
1893 | #endif | |
1894 | #ifdef SIGUME | |
1895 | sigaction (SIGUME, &thread_fatal_action, 0); | |
1896 | #endif | |
1897 | #ifdef SIGDLK | |
1898 | sigaction (SIGDLK, &process_fatal_action, 0); | |
1899 | #endif | |
1900 | #ifdef SIGCPULIM | |
1901 | sigaction (SIGCPULIM, &process_fatal_action, 0); | |
1902 | #endif | |
1903 | #ifdef SIGIOT | |
1904 | sigaction (SIGIOT, &thread_fatal_action, 0); | |
1905 | #endif | |
1906 | #ifdef SIGEMT | |
1907 | sigaction (SIGEMT, &thread_fatal_action, 0); | |
1908 | #endif | |
1909 | #ifdef SIGBUS | |
1910 | sigaction (SIGBUS, &thread_fatal_action, 0); | |
1911 | #endif | |
1912 | sigaction (SIGSEGV, &thread_fatal_action, 0); | |
1913 | #ifdef SIGSYS | |
1914 | sigaction (SIGSYS, &thread_fatal_action, 0); | |
1915 | #endif | |
1916 | sigaction (SIGTERM, &process_fatal_action, 0); | |
1917 | #ifdef SIGPROF | |
d89460ed | 1918 | signal (SIGPROF, SIG_IGN); |
4d7e6e51 PE |
1919 | #endif |
1920 | #ifdef SIGVTALRM | |
1921 | sigaction (SIGVTALRM, &process_fatal_action, 0); | |
1922 | #endif | |
1923 | #ifdef SIGXCPU | |
1924 | sigaction (SIGXCPU, &process_fatal_action, 0); | |
1925 | #endif | |
1926 | #ifdef SIGXFSZ | |
1927 | sigaction (SIGXFSZ, &process_fatal_action, 0); | |
1928 | #endif | |
1929 | ||
1930 | #ifdef SIGDANGER | |
1931 | /* This just means available memory is getting low. */ | |
1932 | emacs_sigaction_init (&action, deliver_danger_signal); | |
1933 | sigaction (SIGDANGER, &action, 0); | |
1934 | #endif | |
1935 | ||
1936 | /* AIX-specific signals. */ | |
1937 | #ifdef SIGGRANT | |
1938 | sigaction (SIGGRANT, &process_fatal_action, 0); | |
1939 | #endif | |
1940 | #ifdef SIGMIGRATE | |
1941 | sigaction (SIGMIGRATE, &process_fatal_action, 0); | |
1942 | #endif | |
1943 | #ifdef SIGMSG | |
1944 | sigaction (SIGMSG, &process_fatal_action, 0); | |
1945 | #endif | |
1946 | #ifdef SIGRETRACT | |
1947 | sigaction (SIGRETRACT, &process_fatal_action, 0); | |
1948 | #endif | |
1949 | #ifdef SIGSAK | |
1950 | sigaction (SIGSAK, &process_fatal_action, 0); | |
1951 | #endif | |
1952 | #ifdef SIGSOUND | |
1953 | sigaction (SIGSOUND, &process_fatal_action, 0); | |
1954 | #endif | |
1955 | #ifdef SIGTALRM | |
1956 | sigaction (SIGTALRM, &thread_fatal_action, 0); | |
1957 | #endif | |
ca9c0567 PE |
1958 | } |
1959 | \f | |
9927a7b1 | 1960 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
1961 | #ifdef random |
1962 | #define HAVE_RANDOM | |
1963 | #endif | |
1964 | #endif | |
1965 | ||
1966 | /* Figure out how many bits the system's random number generator uses. | |
1967 | `random' and `lrand48' are assumed to return 31 usable bits. | |
1968 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
1969 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
1970 | ||
1971 | #ifndef RAND_BITS | |
1972 | # ifdef HAVE_RANDOM | |
1973 | # define RAND_BITS 31 | |
1974 | # else /* !HAVE_RANDOM */ | |
1975 | # ifdef HAVE_LRAND48 | |
1976 | # define RAND_BITS 31 | |
1977 | # define random lrand48 | |
1978 | # else /* !HAVE_LRAND48 */ | |
1979 | # define RAND_BITS 15 | |
1980 | # if RAND_MAX == 32767 | |
1981 | # define random rand | |
1982 | # else /* RAND_MAX != 32767 */ | |
1983 | # if RAND_MAX == 2147483647 | |
1984 | # define random() (rand () >> 16) | |
1985 | # else /* RAND_MAX != 2147483647 */ | |
1986 | # ifdef USG | |
1987 | # define random rand | |
1988 | # else | |
1989 | # define random() (rand () >> 16) | |
2a633456 | 1990 | # endif /* !USG */ |
4bb8c8b7 KH |
1991 | # endif /* RAND_MAX != 2147483647 */ |
1992 | # endif /* RAND_MAX != 32767 */ | |
1993 | # endif /* !HAVE_LRAND48 */ | |
1994 | # endif /* !HAVE_RANDOM */ | |
1995 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 1996 | |
4bb8c8b7 | 1997 | void |
0e23ef9d | 1998 | seed_random (void *seed, ptrdiff_t seed_size) |
86a5659e | 1999 | { |
33634217 | 2000 | #if defined HAVE_RANDOM || ! defined HAVE_LRAND48 |
0e23ef9d PE |
2001 | unsigned int arg = 0; |
2002 | #else | |
2003 | long int arg = 0; | |
2004 | #endif | |
2005 | unsigned char *argp = (unsigned char *) &arg; | |
2006 | unsigned char *seedp = seed; | |
2007 | ptrdiff_t i; | |
2008 | for (i = 0; i < seed_size; i++) | |
2009 | argp[i % sizeof arg] ^= seedp[i]; | |
4bb8c8b7 | 2010 | #ifdef HAVE_RANDOM |
0e23ef9d | 2011 | srandom (arg); |
f8b53a82 | 2012 | #else |
4bb8c8b7 | 2013 | # ifdef HAVE_LRAND48 |
76425a49 | 2014 | srand48 (arg); |
4bb8c8b7 | 2015 | # else |
0e23ef9d | 2016 | srand (arg); |
4bb8c8b7 | 2017 | # endif |
2e46c7c6 | 2018 | #endif |
86a5659e JB |
2019 | } |
2020 | ||
0e23ef9d PE |
2021 | void |
2022 | init_random (void) | |
2023 | { | |
43aac990 PE |
2024 | struct timespec t = current_timespec (); |
2025 | uintmax_t v = getpid () ^ t.tv_sec ^ t.tv_nsec; | |
0e23ef9d PE |
2026 | seed_random (&v, sizeof v); |
2027 | } | |
2028 | ||
4bb8c8b7 | 2029 | /* |
d8ed26bd PE |
2030 | * Return a nonnegative random integer out of whatever we've got. |
2031 | * It contains enough bits to make a random (signed) Emacs fixnum. | |
4bb8c8b7 KH |
2032 | * This suffices even for a 64-bit architecture with a 15-bit rand. |
2033 | */ | |
ede49d71 | 2034 | EMACS_INT |
971de7fb | 2035 | get_random (void) |
4bb8c8b7 | 2036 | { |
ede49d71 PE |
2037 | EMACS_UINT val = 0; |
2038 | int i; | |
d8ed26bd PE |
2039 | for (i = 0; i < (FIXNUM_BITS + RAND_BITS - 1) / RAND_BITS; i++) |
2040 | val = (random () ^ (val << RAND_BITS) | |
2041 | ^ (val >> (BITS_PER_EMACS_INT - RAND_BITS))); | |
2042 | val ^= val >> (BITS_PER_EMACS_INT - FIXNUM_BITS); | |
2043 | return val & INTMASK; | |
4bb8c8b7 | 2044 | } |
7088d1ca | 2045 | |
55e5faa1 PE |
2046 | #ifndef HAVE_SNPRINTF |
2047 | /* Approximate snprintf as best we can on ancient hosts that lack it. */ | |
2048 | int | |
2049 | snprintf (char *buf, size_t bufsize, char const *format, ...) | |
2050 | { | |
2051 | ptrdiff_t size = min (bufsize, PTRDIFF_MAX); | |
2052 | ptrdiff_t nbytes = size - 1; | |
2053 | va_list ap; | |
2054 | ||
2055 | if (size) | |
2056 | { | |
2057 | va_start (ap, format); | |
2058 | nbytes = doprnt (buf, size, format, 0, ap); | |
2059 | va_end (ap); | |
2060 | } | |
2061 | ||
2062 | if (nbytes == size - 1) | |
2063 | { | |
2064 | /* Calculate the length of the string that would have been created | |
2065 | had the buffer been large enough. */ | |
2066 | char stackbuf[4000]; | |
2067 | char *b = stackbuf; | |
2068 | ptrdiff_t bsize = sizeof stackbuf; | |
2069 | va_start (ap, format); | |
2070 | nbytes = evxprintf (&b, &bsize, stackbuf, -1, format, ap); | |
2071 | va_end (ap); | |
2072 | if (b != stackbuf) | |
2073 | xfree (b); | |
2074 | } | |
2075 | ||
2076 | if (INT_MAX < nbytes) | |
2077 | { | |
31bed486 | 2078 | #ifdef EOVERFLOW |
55e5faa1 | 2079 | errno = EOVERFLOW; |
31bed486 EZ |
2080 | #else |
2081 | errno = EDOM; | |
2082 | #endif | |
55e5faa1 PE |
2083 | return -1; |
2084 | } | |
2085 | return nbytes; | |
2086 | } | |
2087 | #endif | |
86a5659e | 2088 | \f |
cf29dd84 PE |
2089 | /* If a backtrace is available, output the top lines of it to stderr. |
2090 | Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines. | |
2091 | This function may be called from a signal handler, so it should | |
2092 | not invoke async-unsafe functions like malloc. */ | |
2093 | void | |
2094 | emacs_backtrace (int backtrace_limit) | |
2095 | { | |
4d7e6e51 | 2096 | void *main_backtrace_buffer[BACKTRACE_LIMIT_MAX + 1]; |
cf29dd84 | 2097 | int bounded_limit = min (backtrace_limit, BACKTRACE_LIMIT_MAX); |
4d7e6e51 PE |
2098 | void *buffer; |
2099 | int npointers; | |
2100 | ||
2101 | if (thread_backtrace_npointers) | |
2102 | { | |
2103 | buffer = thread_backtrace_buffer; | |
2104 | npointers = thread_backtrace_npointers; | |
2105 | } | |
2106 | else | |
2107 | { | |
2108 | buffer = main_backtrace_buffer; | |
2109 | npointers = backtrace (buffer, bounded_limit + 1); | |
2110 | } | |
2111 | ||
cf29dd84 | 2112 | if (npointers) |
4d7e6e51 | 2113 | { |
4ebbdd67 | 2114 | emacs_write (STDERR_FILENO, "\nBacktrace:\n", 12); |
4d7e6e51 PE |
2115 | backtrace_symbols_fd (buffer, npointers, STDERR_FILENO); |
2116 | if (bounded_limit < npointers) | |
4ebbdd67 | 2117 | emacs_write (STDERR_FILENO, "...\n", 4); |
4d7e6e51 | 2118 | } |
cf29dd84 PE |
2119 | } |
2120 | \f | |
1088b922 | 2121 | #ifndef HAVE_NTGUI |
1088b922 PE |
2122 | void |
2123 | emacs_abort (void) | |
2124 | { | |
17fdfc15 | 2125 | terminate_due_to_signal (SIGABRT, 40); |
1088b922 PE |
2126 | } |
2127 | #endif | |
2128 | ||
406af475 | 2129 | /* Open FILE for Emacs use, using open flags OFLAG and mode MODE. |
067428c1 PE |
2130 | Arrange for subprograms to not inherit the file descriptor. |
2131 | Prefer a method that is multithread-safe, if available. | |
406af475 PE |
2132 | Do not fail merely because the open was interrupted by a signal. |
2133 | Allow the user to quit. */ | |
2134 | ||
86a5659e | 2135 | int |
406af475 | 2136 | emacs_open (const char *file, int oflags, int mode) |
86a5659e | 2137 | { |
406af475 | 2138 | int fd; |
067428c1 | 2139 | oflags |= O_CLOEXEC; |
406af475 PE |
2140 | while ((fd = open (file, oflags, mode)) < 0 && errno == EINTR) |
2141 | QUIT; | |
067428c1 PE |
2142 | if (! O_CLOEXEC && 0 <= fd) |
2143 | fcntl (fd, F_SETFD, FD_CLOEXEC); | |
406af475 PE |
2144 | return fd; |
2145 | } | |
68c45bf0 | 2146 | |
406af475 PE |
2147 | /* Open FILE as a stream for Emacs use, with mode MODE. |
2148 | Act like emacs_open with respect to threads, signals, and quits. */ | |
2149 | ||
2150 | FILE * | |
2151 | emacs_fopen (char const *file, char const *mode) | |
2152 | { | |
067428c1 PE |
2153 | int fd, omode, oflags; |
2154 | int bflag = 0; | |
2155 | char const *m = mode; | |
2156 | ||
2157 | switch (*m++) | |
2158 | { | |
2159 | case 'r': omode = O_RDONLY; oflags = 0; break; | |
2160 | case 'w': omode = O_WRONLY; oflags = O_CREAT | O_TRUNC; break; | |
2161 | case 'a': omode = O_WRONLY; oflags = O_CREAT | O_APPEND; break; | |
2162 | default: emacs_abort (); | |
2163 | } | |
2164 | ||
2165 | while (*m) | |
2166 | switch (*m++) | |
2167 | { | |
2168 | case '+': omode = O_RDWR; break; | |
2169 | case 'b': bflag = O_BINARY; break; | |
2170 | case 't': bflag = O_TEXT; break; | |
2171 | default: /* Ignore. */ break; | |
2172 | } | |
2173 | ||
2174 | fd = emacs_open (file, omode | oflags | bflag, 0666); | |
2175 | return fd < 0 ? 0 : fdopen (fd, mode); | |
86a5659e JB |
2176 | } |
2177 | ||
c7ddc792 PE |
2178 | /* Create a pipe for Emacs use. */ |
2179 | ||
2180 | int | |
2181 | emacs_pipe (int fd[2]) | |
2182 | { | |
2183 | int result = pipe2 (fd, O_CLOEXEC); | |
2184 | if (! O_CLOEXEC && result == 0) | |
2185 | { | |
2186 | fcntl (fd[0], F_SETFD, FD_CLOEXEC); | |
2187 | fcntl (fd[1], F_SETFD, FD_CLOEXEC); | |
2188 | } | |
2189 | return result; | |
2190 | } | |
2191 | ||
bacba3c2 PE |
2192 | /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs. |
2193 | For the background behind this mess, please see Austin Group defect 529 | |
2194 | <http://austingroupbugs.net/view.php?id=529>. */ | |
2195 | ||
2196 | #ifndef POSIX_CLOSE_RESTART | |
2197 | # define POSIX_CLOSE_RESTART 1 | |
2198 | static int | |
2199 | posix_close (int fd, int flag) | |
86a5659e | 2200 | { |
bacba3c2 PE |
2201 | /* Only the POSIX_CLOSE_RESTART case is emulated. */ |
2202 | eassert (flag == POSIX_CLOSE_RESTART); | |
2203 | ||
2204 | /* Things are tricky if close (fd) returns -1 with errno == EINTR | |
2205 | on a system that does not define POSIX_CLOSE_RESTART. | |
2206 | ||
2207 | In this case, in some systems (e.g., GNU/Linux, AIX) FD is | |
2208 | closed, and retrying the close could inadvertently close a file | |
2209 | descriptor allocated by some other thread. In other systems | |
2210 | (e.g., HP/UX) FD is not closed. And in still other systems | |
2211 | (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a | |
2212 | multithreaded program there can be no way to tell. | |
2213 | ||
2214 | So, in this case, pretend that the close succeeded. This works | |
2215 | well on systems like GNU/Linux that close FD. Although it may | |
2216 | leak a file descriptor on other systems, the leak is unlikely and | |
2217 | it's better to leak than to close a random victim. */ | |
2218 | return close (fd) == 0 || errno == EINTR ? 0 : -1; | |
2219 | } | |
2220 | #endif | |
86a5659e | 2221 | |
bacba3c2 PE |
2222 | /* Close FD, retrying if interrupted. If successful, return 0; |
2223 | otherwise, return -1 and set errno to a non-EINTR value. Consider | |
2224 | an EINPROGRESS error to be successful, as that's merely a signal | |
2225 | arriving. FD is always closed when this function returns, even | |
2226 | when it returns -1. | |
fe111daf | 2227 | |
7e649856 PE |
2228 | Do not call this function if FD is nonnegative and might already be closed, |
2229 | as that might close an innocent victim opened by some other thread. */ | |
fe111daf | 2230 | |
bacba3c2 PE |
2231 | int |
2232 | emacs_close (int fd) | |
2233 | { | |
2234 | while (1) | |
2235 | { | |
2236 | int r = posix_close (fd, POSIX_CLOSE_RESTART); | |
2237 | if (r == 0) | |
2238 | return r; | |
2239 | if (!POSIX_CLOSE_RESTART || errno != EINTR) | |
2240 | { | |
7e649856 | 2241 | eassert (errno != EBADF || fd < 0); |
bacba3c2 PE |
2242 | return errno == EINPROGRESS ? 0 : r; |
2243 | } | |
2244 | } | |
86a5659e JB |
2245 | } |
2246 | ||
1963a2e0 PE |
2247 | /* Maximum number of bytes to read or write in a single system call. |
2248 | This works around a serious bug in Linux kernels before 2.6.16; see | |
2249 | <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>. | |
2250 | It's likely to work around similar bugs in other operating systems, so do it | |
2251 | on all platforms. Round INT_MAX down to a page size, with the conservative | |
2252 | assumption that page sizes are at most 2**18 bytes (any kernel with a | |
2253 | page size larger than that shouldn't have the bug). */ | |
2254 | #ifndef MAX_RW_COUNT | |
2255 | #define MAX_RW_COUNT (INT_MAX >> 18 << 18) | |
2256 | #endif | |
2257 | ||
273a5f82 PE |
2258 | /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted. |
2259 | Return the number of bytes read, which might be less than NBYTE. | |
2260 | On error, set errno and return -1. */ | |
d311d28c PE |
2261 | ptrdiff_t |
2262 | emacs_read (int fildes, char *buf, ptrdiff_t nbyte) | |
86a5659e | 2263 | { |
8a2cbd72 | 2264 | register ssize_t rtnval; |
177c0ea7 | 2265 | |
71b41406 PE |
2266 | /* There is no need to check against MAX_RW_COUNT, since no caller ever |
2267 | passes a size that large to emacs_read. */ | |
2268 | ||
2269 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
275464e7 SM |
2270 | && (errno == EINTR)) |
2271 | QUIT; | |
86a5659e JB |
2272 | return (rtnval); |
2273 | } | |
2274 | ||
273a5f82 | 2275 | /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted |
4ebbdd67 PE |
2276 | or if a partial write occurs. If interrupted, process pending |
2277 | signals if PROCESS SIGNALS. Return the number of bytes written, setting | |
273a5f82 | 2278 | errno if this is less than NBYTE. */ |
4ebbdd67 PE |
2279 | static ptrdiff_t |
2280 | emacs_full_write (int fildes, char const *buf, ptrdiff_t nbyte, | |
2281 | bool process_signals) | |
86a5659e | 2282 | { |
4ebbdd67 | 2283 | ptrdiff_t bytes_written = 0; |
b95520f5 | 2284 | |
273a5f82 | 2285 | while (nbyte > 0) |
b95520f5 | 2286 | { |
4ebbdd67 | 2287 | ssize_t n = write (fildes, buf, min (nbyte, MAX_RW_COUNT)); |
b95520f5 | 2288 | |
4ebbdd67 | 2289 | if (n < 0) |
b95520f5 BF |
2290 | { |
2291 | if (errno == EINTR) | |
77220eeb | 2292 | { |
77220eeb SM |
2293 | /* I originally used `QUIT' but that might causes files to |
2294 | be truncated if you hit C-g in the middle of it. --Stef */ | |
4ebbdd67 | 2295 | if (process_signals && pending_signals) |
4d7e6e51 | 2296 | process_pending_signals (); |
77220eeb SM |
2297 | continue; |
2298 | } | |
b95520f5 | 2299 | else |
273a5f82 | 2300 | break; |
b95520f5 BF |
2301 | } |
2302 | ||
4ebbdd67 PE |
2303 | buf += n; |
2304 | nbyte -= n; | |
2305 | bytes_written += n; | |
b95520f5 | 2306 | } |
273a5f82 | 2307 | |
4ebbdd67 PE |
2308 | return bytes_written; |
2309 | } | |
2310 | ||
2311 | /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if | |
2312 | interrupted or if a partial write occurs. Return the number of | |
2313 | bytes written, setting errno if this is less than NBYTE. */ | |
2314 | ptrdiff_t | |
2315 | emacs_write (int fildes, char const *buf, ptrdiff_t nbyte) | |
2316 | { | |
2317 | return emacs_full_write (fildes, buf, nbyte, 0); | |
2318 | } | |
2319 | ||
2320 | /* Like emacs_write, but also process pending signals if interrupted. */ | |
2321 | ptrdiff_t | |
2322 | emacs_write_sig (int fildes, char const *buf, ptrdiff_t nbyte) | |
2323 | { | |
2324 | return emacs_full_write (fildes, buf, nbyte, 1); | |
2325 | } | |
2326 | ||
2327 | /* Write a diagnostic to standard error that contains MESSAGE and a | |
2328 | string derived from errno. Preserve errno. Do not buffer stderr. | |
2329 | Do not process pending signals if interrupted. */ | |
2330 | void | |
2331 | emacs_perror (char const *message) | |
2332 | { | |
2333 | int err = errno; | |
2334 | char const *error_string = strerror (err); | |
2335 | char const *command = (initial_argv && initial_argv[0] | |
2336 | ? initial_argv[0] : "emacs"); | |
2337 | /* Write it out all at once, if it's short; this is less likely to | |
2338 | be interleaved with other output. */ | |
2339 | char buf[BUFSIZ]; | |
2340 | int nbytes = snprintf (buf, sizeof buf, "%s: %s: %s\n", | |
2341 | command, message, error_string); | |
2342 | if (0 <= nbytes && nbytes < BUFSIZ) | |
2343 | emacs_write (STDERR_FILENO, buf, nbytes); | |
2344 | else | |
2345 | { | |
2346 | emacs_write (STDERR_FILENO, command, strlen (command)); | |
2347 | emacs_write (STDERR_FILENO, ": ", 2); | |
2348 | emacs_write (STDERR_FILENO, message, strlen (message)); | |
2349 | emacs_write (STDERR_FILENO, ": ", 2); | |
2350 | emacs_write (STDERR_FILENO, error_string, strlen (error_string)); | |
2351 | emacs_write (STDERR_FILENO, "\n", 1); | |
2352 | } | |
2353 | errno = err; | |
86a5659e | 2354 | } |
86a5659e | 2355 | \f |
d35af63c PE |
2356 | /* Return a struct timeval that is roughly equivalent to T. |
2357 | Use the least timeval not less than T. | |
2358 | Return an extremal value if the result would overflow. */ | |
2359 | struct timeval | |
43aac990 | 2360 | make_timeval (struct timespec t) |
d35af63c PE |
2361 | { |
2362 | struct timeval tv; | |
2363 | tv.tv_sec = t.tv_sec; | |
2364 | tv.tv_usec = t.tv_nsec / 1000; | |
2365 | ||
2366 | if (t.tv_nsec % 1000 != 0) | |
2367 | { | |
2368 | if (tv.tv_usec < 999999) | |
2369 | tv.tv_usec++; | |
2370 | else if (tv.tv_sec < TYPE_MAXIMUM (time_t)) | |
2371 | { | |
2372 | tv.tv_sec++; | |
2373 | tv.tv_usec = 0; | |
2374 | } | |
2375 | } | |
2376 | ||
2377 | return tv; | |
2378 | } | |
2379 | ||
2380 | /* Set the access and modification time stamps of FD (a.k.a. FILE) to be | |
2381 | ATIME and MTIME, respectively. | |
2382 | FD must be either negative -- in which case it is ignored -- | |
2383 | or a file descriptor that is open on FILE. | |
2384 | If FD is nonnegative, then FILE can be NULL. */ | |
53ea491a | 2385 | int |
d35af63c | 2386 | set_file_times (int fd, const char *filename, |
43aac990 | 2387 | struct timespec atime, struct timespec mtime) |
d35af63c PE |
2388 | { |
2389 | struct timespec timespec[2]; | |
2390 | timespec[0] = atime; | |
2391 | timespec[1] = mtime; | |
2392 | return fdutimens (fd, filename, timespec); | |
53ea491a KH |
2393 | } |
2394 | \f | |
aa1ba90e PE |
2395 | /* Like strsignal, except async-signal-safe, and this function typically |
2396 | returns a string in the C locale rather than the current locale. */ | |
2397 | char const * | |
2398 | safe_strsignal (int code) | |
68c45bf0 | 2399 | { |
aa1ba90e | 2400 | char const *signame = 0; |
68c45bf0 | 2401 | |
c622b48f | 2402 | if (0 <= code && code < sys_siglist_entries) |
aa1ba90e PE |
2403 | signame = sys_siglist[code]; |
2404 | if (! signame) | |
2405 | signame = "Unknown signal"; | |
c4ea52a6 | 2406 | |
68c45bf0 PE |
2407 | return signame; |
2408 | } | |
d888760c | 2409 | \f |
a7ebc409 | 2410 | #ifndef DOS_NT |
d888760c | 2411 | /* For make-serial-process */ |
cf84bb53 | 2412 | int |
4e604a5d | 2413 | serial_open (Lisp_Object port) |
d888760c | 2414 | { |
4e604a5d | 2415 | int fd = emacs_open (SSDATA (port), O_RDWR | O_NOCTTY | O_NONBLOCK, 0); |
d888760c | 2416 | if (fd < 0) |
4e604a5d | 2417 | report_file_error ("Opening serial port", port); |
d888760c GM |
2418 | #ifdef TIOCEXCL |
2419 | ioctl (fd, TIOCEXCL, (char *) 0); | |
2420 | #endif | |
2421 | ||
2422 | return fd; | |
2423 | } | |
759d3f32 SM |
2424 | |
2425 | #if !defined (HAVE_CFMAKERAW) | |
2426 | /* Workaround for targets which are missing cfmakeraw. */ | |
2427 | /* Pasted from man page. */ | |
cf84bb53 JB |
2428 | static void |
2429 | cfmakeraw (struct termios *termios_p) | |
759d3f32 SM |
2430 | { |
2431 | termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
2432 | termios_p->c_oflag &= ~OPOST; | |
2433 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
2434 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
2435 | termios_p->c_cflag |= CS8; | |
2436 | } | |
2437 | #endif /* !defined (HAVE_CFMAKERAW */ | |
2438 | ||
2439 | #if !defined (HAVE_CFSETSPEED) | |
2440 | /* Workaround for targets which are missing cfsetspeed. */ | |
cf84bb53 JB |
2441 | static int |
2442 | cfsetspeed (struct termios *termios_p, speed_t vitesse) | |
759d3f32 SM |
2443 | { |
2444 | return (cfsetispeed (termios_p, vitesse) | |
2445 | + cfsetospeed (termios_p, vitesse)); | |
2446 | } | |
2447 | #endif | |
2448 | ||
d888760c GM |
2449 | /* For serial-process-configure */ |
2450 | void | |
2451 | serial_configure (struct Lisp_Process *p, | |
cf84bb53 | 2452 | Lisp_Object contact) |
d888760c GM |
2453 | { |
2454 | Lisp_Object childp2 = Qnil; | |
2455 | Lisp_Object tem = Qnil; | |
2456 | struct termios attr; | |
9c05bccf | 2457 | int err; |
d888760c GM |
2458 | char summary[4] = "???"; /* This usually becomes "8N1". */ |
2459 | ||
4d2b044c | 2460 | childp2 = Fcopy_sequence (p->childp); |
d888760c GM |
2461 | |
2462 | /* Read port attributes and prepare default configuration. */ | |
2463 | err = tcgetattr (p->outfd, &attr); | |
2464 | if (err != 0) | |
4e604a5d | 2465 | report_file_error ("Failed tcgetattr", Qnil); |
d888760c GM |
2466 | cfmakeraw (&attr); |
2467 | #if defined (CLOCAL) | |
2468 | attr.c_cflag |= CLOCAL; | |
2469 | #endif | |
2470 | #if defined (CREAD) | |
6d1921be | 2471 | attr.c_cflag |= CREAD; |
d888760c GM |
2472 | #endif |
2473 | ||
2474 | /* Configure speed. */ | |
2475 | if (!NILP (Fplist_member (contact, QCspeed))) | |
2476 | tem = Fplist_get (contact, QCspeed); | |
2477 | else | |
4d2b044c | 2478 | tem = Fplist_get (p->childp, QCspeed); |
d888760c GM |
2479 | CHECK_NUMBER (tem); |
2480 | err = cfsetspeed (&attr, XINT (tem)); | |
2481 | if (err != 0) | |
4e604a5d | 2482 | report_file_error ("Failed cfsetspeed", tem); |
d888760c GM |
2483 | childp2 = Fplist_put (childp2, QCspeed, tem); |
2484 | ||
2485 | /* Configure bytesize. */ | |
2486 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
2487 | tem = Fplist_get (contact, QCbytesize); | |
2488 | else | |
4d2b044c | 2489 | tem = Fplist_get (p->childp, QCbytesize); |
d888760c GM |
2490 | if (NILP (tem)) |
2491 | tem = make_number (8); | |
2492 | CHECK_NUMBER (tem); | |
2493 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
2494 | error (":bytesize must be nil (8), 7, or 8"); | |
cf84bb53 | 2495 | summary[0] = XINT (tem) + '0'; |
d888760c GM |
2496 | #if defined (CSIZE) && defined (CS7) && defined (CS8) |
2497 | attr.c_cflag &= ~CSIZE; | |
2498 | attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8); | |
2499 | #else | |
16bad4dd | 2500 | /* Don't error on bytesize 8, which should be set by cfmakeraw. */ |
d888760c GM |
2501 | if (XINT (tem) != 8) |
2502 | error ("Bytesize cannot be changed"); | |
2503 | #endif | |
2504 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
2505 | ||
2506 | /* Configure parity. */ | |
2507 | if (!NILP (Fplist_member (contact, QCparity))) | |
2508 | tem = Fplist_get (contact, QCparity); | |
2509 | else | |
4d2b044c | 2510 | tem = Fplist_get (p->childp, QCparity); |
d888760c GM |
2511 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) |
2512 | error (":parity must be nil (no parity), `even', or `odd'"); | |
2513 | #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK) | |
2514 | attr.c_cflag &= ~(PARENB | PARODD); | |
2515 | attr.c_iflag &= ~(IGNPAR | INPCK); | |
2516 | if (NILP (tem)) | |
2517 | { | |
2518 | summary[1] = 'N'; | |
2519 | } | |
2520 | else if (EQ (tem, Qeven)) | |
2521 | { | |
2522 | summary[1] = 'E'; | |
2523 | attr.c_cflag |= PARENB; | |
2524 | attr.c_iflag |= (IGNPAR | INPCK); | |
2525 | } | |
2526 | else if (EQ (tem, Qodd)) | |
2527 | { | |
2528 | summary[1] = 'O'; | |
2529 | attr.c_cflag |= (PARENB | PARODD); | |
2530 | attr.c_iflag |= (IGNPAR | INPCK); | |
2531 | } | |
2532 | #else | |
16bad4dd | 2533 | /* Don't error on no parity, which should be set by cfmakeraw. */ |
d888760c GM |
2534 | if (!NILP (tem)) |
2535 | error ("Parity cannot be configured"); | |
2536 | #endif | |
2537 | childp2 = Fplist_put (childp2, QCparity, tem); | |
2538 | ||
2539 | /* Configure stopbits. */ | |
2540 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
2541 | tem = Fplist_get (contact, QCstopbits); | |
2542 | else | |
4d2b044c | 2543 | tem = Fplist_get (p->childp, QCstopbits); |
d888760c GM |
2544 | if (NILP (tem)) |
2545 | tem = make_number (1); | |
2546 | CHECK_NUMBER (tem); | |
2547 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
2548 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
2549 | summary[2] = XINT (tem) + '0'; | |
2550 | #if defined (CSTOPB) | |
2551 | attr.c_cflag &= ~CSTOPB; | |
2552 | if (XINT (tem) == 2) | |
2553 | attr.c_cflag |= CSTOPB; | |
2554 | #else | |
16bad4dd | 2555 | /* Don't error on 1 stopbit, which should be set by cfmakeraw. */ |
d888760c GM |
2556 | if (XINT (tem) != 1) |
2557 | error ("Stopbits cannot be configured"); | |
2558 | #endif | |
2559 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
2560 | ||
2561 | /* Configure flowcontrol. */ | |
2562 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
2563 | tem = Fplist_get (contact, QCflowcontrol); | |
2564 | else | |
4d2b044c | 2565 | tem = Fplist_get (p->childp, QCflowcontrol); |
d888760c GM |
2566 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) |
2567 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
2568 | #if defined (CRTSCTS) | |
2569 | attr.c_cflag &= ~CRTSCTS; | |
2570 | #endif | |
2571 | #if defined (CNEW_RTSCTS) | |
2572 | attr.c_cflag &= ~CNEW_RTSCTS; | |
2573 | #endif | |
2574 | #if defined (IXON) && defined (IXOFF) | |
2575 | attr.c_iflag &= ~(IXON | IXOFF); | |
2576 | #endif | |
2577 | if (NILP (tem)) | |
2578 | { | |
2579 | /* Already configured. */ | |
2580 | } | |
2581 | else if (EQ (tem, Qhw)) | |
2582 | { | |
2583 | #if defined (CRTSCTS) | |
2584 | attr.c_cflag |= CRTSCTS; | |
2585 | #elif defined (CNEW_RTSCTS) | |
2586 | attr.c_cflag |= CNEW_RTSCTS; | |
2587 | #else | |
2588 | error ("Hardware flowcontrol (RTS/CTS) not supported"); | |
2589 | #endif | |
2590 | } | |
2591 | else if (EQ (tem, Qsw)) | |
2592 | { | |
2593 | #if defined (IXON) && defined (IXOFF) | |
2594 | attr.c_iflag |= (IXON | IXOFF); | |
2595 | #else | |
2596 | error ("Software flowcontrol (XON/XOFF) not supported"); | |
2597 | #endif | |
2598 | } | |
2599 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
2600 | ||
2601 | /* Activate configuration. */ | |
2602 | err = tcsetattr (p->outfd, TCSANOW, &attr); | |
2603 | if (err != 0) | |
4e604a5d | 2604 | report_file_error ("Failed tcsetattr", Qnil); |
d888760c GM |
2605 | |
2606 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6a09a33b | 2607 | pset_childp (p, childp2); |
d888760c | 2608 | } |
a7ebc409 | 2609 | #endif /* not DOS_NT */ |
06e111a6 DN |
2610 | \f |
2611 | /* System depended enumeration of and access to system processes a-la ps(1). */ | |
2612 | ||
2613 | #ifdef HAVE_PROCFS | |
2614 | ||
2615 | /* Process enumeration and access via /proc. */ | |
2616 | ||
2617 | Lisp_Object | |
971de7fb | 2618 | list_system_processes (void) |
06e111a6 DN |
2619 | { |
2620 | Lisp_Object procdir, match, proclist, next; | |
2621 | struct gcpro gcpro1, gcpro2; | |
2622 | register Lisp_Object tail; | |
2623 | ||
2624 | GCPRO2 (procdir, match); | |
2625 | /* For every process on the system, there's a directory in the | |
2626 | "/proc" pseudo-directory whose name is the numeric ID of that | |
2627 | process. */ | |
2628 | procdir = build_string ("/proc"); | |
2629 | match = build_string ("[0-9]+"); | |
86ec63ba | 2630 | proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil); |
06e111a6 DN |
2631 | |
2632 | /* `proclist' gives process IDs as strings. Destructively convert | |
2633 | each string into a number. */ | |
2634 | for (tail = proclist; CONSP (tail); tail = next) | |
2635 | { | |
2636 | next = XCDR (tail); | |
2637 | XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil)); | |
2638 | } | |
2639 | UNGCPRO; | |
2640 | ||
2641 | /* directory_files_internal returns the files in reverse order; undo | |
2642 | that. */ | |
2643 | proclist = Fnreverse (proclist); | |
2644 | return proclist; | |
2645 | } | |
2646 | ||
0845a75c | 2647 | #elif defined DARWIN_OS || defined __FreeBSD__ |
725eb027 | 2648 | |
b91b7e4d | 2649 | Lisp_Object |
5790543d | 2650 | list_system_processes (void) |
b91b7e4d | 2651 | { |
0845a75c | 2652 | #ifdef DARWIN_OS |
f01769f9 LL |
2653 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL}; |
2654 | #else | |
b91b7e4d | 2655 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PROC}; |
f01769f9 | 2656 | #endif |
b91b7e4d EW |
2657 | size_t len; |
2658 | struct kinfo_proc *procs; | |
2659 | size_t i; | |
2660 | ||
2661 | struct gcpro gcpro1; | |
2662 | Lisp_Object proclist = Qnil; | |
2663 | ||
2664 | if (sysctl (mib, 3, NULL, &len, NULL, 0) != 0) | |
2665 | return proclist; | |
5790543d | 2666 | |
b91b7e4d EW |
2667 | procs = xmalloc (len); |
2668 | if (sysctl (mib, 3, procs, &len, NULL, 0) != 0) | |
2669 | { | |
2670 | xfree (procs); | |
2671 | return proclist; | |
2672 | } | |
5790543d | 2673 | |
b91b7e4d EW |
2674 | GCPRO1 (proclist); |
2675 | len /= sizeof (struct kinfo_proc); | |
2676 | for (i = 0; i < len; i++) | |
f01769f9 | 2677 | { |
0845a75c | 2678 | #ifdef DARWIN_OS |
f01769f9 LL |
2679 | proclist = Fcons (make_fixnum_or_float (procs[i].kp_proc.p_pid), proclist); |
2680 | #else | |
2681 | proclist = Fcons (make_fixnum_or_float (procs[i].ki_pid), proclist); | |
2682 | #endif | |
2683 | } | |
b91b7e4d | 2684 | UNGCPRO; |
5790543d | 2685 | |
b91b7e4d EW |
2686 | xfree (procs); |
2687 | ||
2688 | return proclist; | |
2689 | } | |
2690 | ||
f8d23104 DN |
2691 | /* The WINDOWSNT implementation is in w32.c. |
2692 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 2693 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
2694 | |
2695 | Lisp_Object | |
cf84bb53 | 2696 | list_system_processes (void) |
06e111a6 DN |
2697 | { |
2698 | return Qnil; | |
2699 | } | |
91c85b70 EZ |
2700 | |
2701 | #endif /* !defined (WINDOWSNT) */ | |
06e111a6 | 2702 | |
29abe551 | 2703 | #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT |
43aac990 | 2704 | static struct timespec |
d35af63c PE |
2705 | time_from_jiffies (unsigned long long tval, long hz) |
2706 | { | |
2707 | unsigned long long s = tval / hz; | |
2708 | unsigned long long frac = tval % hz; | |
2709 | int ns; | |
d35af63c PE |
2710 | |
2711 | if (TYPE_MAXIMUM (time_t) < s) | |
2712 | time_overflow (); | |
43aac990 PE |
2713 | if (LONG_MAX - 1 <= ULLONG_MAX / TIMESPEC_RESOLUTION |
2714 | || frac <= ULLONG_MAX / TIMESPEC_RESOLUTION) | |
2715 | ns = frac * TIMESPEC_RESOLUTION / hz; | |
06e111a6 | 2716 | else |
d35af63c PE |
2717 | { |
2718 | /* This is reachable only in the unlikely case that HZ * HZ | |
2719 | exceeds ULLONG_MAX. It calculates an approximation that is | |
2720 | guaranteed to be in range. */ | |
43aac990 PE |
2721 | long hz_per_ns = (hz / TIMESPEC_RESOLUTION |
2722 | + (hz % TIMESPEC_RESOLUTION != 0)); | |
d35af63c PE |
2723 | ns = frac / hz_per_ns; |
2724 | } | |
2725 | ||
43aac990 | 2726 | return make_timespec (s, ns); |
06e111a6 DN |
2727 | } |
2728 | ||
2729 | static Lisp_Object | |
2730 | ltime_from_jiffies (unsigned long long tval, long hz) | |
2731 | { | |
43aac990 | 2732 | struct timespec t = time_from_jiffies (tval, hz); |
d35af63c | 2733 | return make_lisp_time (t); |
06e111a6 DN |
2734 | } |
2735 | ||
43aac990 | 2736 | static struct timespec |
d35af63c | 2737 | get_up_time (void) |
06e111a6 DN |
2738 | { |
2739 | FILE *fup; | |
43aac990 | 2740 | struct timespec up = make_timespec (0, 0); |
06e111a6 | 2741 | |
4d7e6e51 | 2742 | block_input (); |
406af475 | 2743 | fup = emacs_fopen ("/proc/uptime", "r"); |
06e111a6 DN |
2744 | |
2745 | if (fup) | |
2746 | { | |
d35af63c PE |
2747 | unsigned long long upsec, upfrac, idlesec, idlefrac; |
2748 | int upfrac_start, upfrac_end, idlefrac_start, idlefrac_end; | |
06e111a6 | 2749 | |
d35af63c PE |
2750 | if (fscanf (fup, "%llu.%n%llu%n %llu.%n%llu%n", |
2751 | &upsec, &upfrac_start, &upfrac, &upfrac_end, | |
2752 | &idlesec, &idlefrac_start, &idlefrac, &idlefrac_end) | |
2753 | == 4) | |
06e111a6 | 2754 | { |
d35af63c PE |
2755 | if (TYPE_MAXIMUM (time_t) < upsec) |
2756 | { | |
2757 | upsec = TYPE_MAXIMUM (time_t); | |
43aac990 | 2758 | upfrac = TIMESPEC_RESOLUTION - 1; |
d35af63c PE |
2759 | } |
2760 | else | |
2761 | { | |
2762 | int upfraclen = upfrac_end - upfrac_start; | |
43aac990 | 2763 | for (; upfraclen < LOG10_TIMESPEC_RESOLUTION; upfraclen++) |
d35af63c | 2764 | upfrac *= 10; |
43aac990 | 2765 | for (; LOG10_TIMESPEC_RESOLUTION < upfraclen; upfraclen--) |
d35af63c | 2766 | upfrac /= 10; |
43aac990 | 2767 | upfrac = min (upfrac, TIMESPEC_RESOLUTION - 1); |
d35af63c | 2768 | } |
43aac990 | 2769 | up = make_timespec (upsec, upfrac); |
06e111a6 DN |
2770 | } |
2771 | fclose (fup); | |
2772 | } | |
4d7e6e51 | 2773 | unblock_input (); |
d35af63c PE |
2774 | |
2775 | return up; | |
06e111a6 DN |
2776 | } |
2777 | ||
2778 | #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff) | |
2779 | #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12)) | |
2780 | ||
2781 | static Lisp_Object | |
f4f634e8 | 2782 | procfs_ttyname (int rdev) |
06e111a6 | 2783 | { |
ab9980cd | 2784 | FILE *fdev; |
06e111a6 DN |
2785 | char name[PATH_MAX]; |
2786 | ||
4d7e6e51 | 2787 | block_input (); |
406af475 | 2788 | fdev = emacs_fopen ("/proc/tty/drivers", "r"); |
ab9980cd | 2789 | name[0] = 0; |
06e111a6 DN |
2790 | |
2791 | if (fdev) | |
2792 | { | |
2793 | unsigned major; | |
2794 | unsigned long minor_beg, minor_end; | |
2795 | char minor[25]; /* 2 32-bit numbers + dash */ | |
2796 | char *endp; | |
2797 | ||
ab9980cd | 2798 | for (; !feof (fdev) && !ferror (fdev); name[0] = 0) |
06e111a6 | 2799 | { |
908589fd | 2800 | if (fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor) >= 3 |
06e111a6 DN |
2801 | && major == MAJOR (rdev)) |
2802 | { | |
2803 | minor_beg = strtoul (minor, &endp, 0); | |
2804 | if (*endp == '\0') | |
2805 | minor_end = minor_beg; | |
2806 | else if (*endp == '-') | |
2807 | minor_end = strtoul (endp + 1, &endp, 0); | |
2808 | else | |
2809 | continue; | |
2810 | ||
2811 | if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end) | |
2812 | { | |
10d66ec0 | 2813 | sprintf (name + strlen (name), "%u", MINOR (rdev)); |
06e111a6 DN |
2814 | break; |
2815 | } | |
2816 | } | |
2817 | } | |
2818 | fclose (fdev); | |
2819 | } | |
4d7e6e51 | 2820 | unblock_input (); |
06e111a6 DN |
2821 | return build_string (name); |
2822 | } | |
2823 | ||
9c05bccf | 2824 | static uintmax_t |
06e111a6 DN |
2825 | procfs_get_total_memory (void) |
2826 | { | |
ab9980cd | 2827 | FILE *fmem; |
9c05bccf PE |
2828 | uintmax_t retval = 2 * 1024 * 1024; /* default: 2 GiB */ |
2829 | int c; | |
06e111a6 | 2830 | |
4d7e6e51 | 2831 | block_input (); |
406af475 | 2832 | fmem = emacs_fopen ("/proc/meminfo", "r"); |
06e111a6 DN |
2833 | |
2834 | if (fmem) | |
2835 | { | |
9c05bccf PE |
2836 | uintmax_t entry_value; |
2837 | bool done; | |
2838 | ||
2839 | do | |
2840 | switch (fscanf (fmem, "MemTotal: %"SCNuMAX, &entry_value)) | |
2841 | { | |
2842 | case 1: | |
2843 | retval = entry_value; | |
2844 | done = 1; | |
2845 | break; | |
2846 | ||
2847 | case 0: | |
2848 | while ((c = getc (fmem)) != EOF && c != '\n') | |
2849 | continue; | |
2850 | done = c == EOF; | |
2851 | break; | |
2852 | ||
2853 | default: | |
2854 | done = 1; | |
2855 | break; | |
2856 | } | |
2857 | while (!done); | |
06e111a6 | 2858 | |
06e111a6 DN |
2859 | fclose (fmem); |
2860 | } | |
4d7e6e51 | 2861 | unblock_input (); |
06e111a6 DN |
2862 | return retval; |
2863 | } | |
2864 | ||
2865 | Lisp_Object | |
f4f634e8 | 2866 | system_process_attributes (Lisp_Object pid) |
06e111a6 DN |
2867 | { |
2868 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
2869 | struct stat st; | |
2870 | struct passwd *pw; | |
2871 | struct group *gr; | |
2872 | long clocks_per_sec; | |
2873 | char *procfn_end; | |
2874 | char procbuf[1025], *p, *q; | |
2875 | int fd; | |
2876 | ssize_t nread; | |
e99a530f PE |
2877 | static char const default_cmd[] = "???"; |
2878 | const char *cmd = default_cmd; | |
2879 | int cmdsize = sizeof default_cmd - 1; | |
06e111a6 | 2880 | char *cmdline = NULL; |
e99a530f | 2881 | ptrdiff_t cmdline_size; |
ab9980cd | 2882 | char c; |
d311d28c PE |
2883 | printmax_t proc_id; |
2884 | int ppid, pgrp, sess, tty, tpgid, thcount; | |
2885 | uid_t uid; | |
2886 | gid_t gid; | |
a70072c9 PE |
2887 | unsigned long long u_time, s_time, cutime, cstime, start; |
2888 | long priority, niceness, rss; | |
06e111a6 | 2889 | unsigned long minflt, majflt, cminflt, cmajflt, vsize; |
43aac990 | 2890 | struct timespec tnow, tstart, tboot, telapsed, us_time; |
06e111a6 DN |
2891 | double pcpu, pmem; |
2892 | Lisp_Object attrs = Qnil; | |
ab9980cd PE |
2893 | Lisp_Object cmd_str, decoded_cmd; |
2894 | ptrdiff_t count; | |
06e111a6 | 2895 | struct gcpro gcpro1, gcpro2; |
06e111a6 DN |
2896 | |
2897 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 2898 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 2899 | sprintf (procfn, "/proc/%"pMd, proc_id); |
06e111a6 DN |
2900 | if (stat (procfn, &st) < 0) |
2901 | return attrs; | |
2902 | ||
2903 | GCPRO2 (attrs, decoded_cmd); | |
2904 | ||
2905 | /* euid egid */ | |
2906 | uid = st.st_uid; | |
d311d28c | 2907 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
4d7e6e51 | 2908 | block_input (); |
06e111a6 | 2909 | pw = getpwuid (uid); |
4d7e6e51 | 2910 | unblock_input (); |
06e111a6 DN |
2911 | if (pw) |
2912 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
2913 | ||
2914 | gid = st.st_gid; | |
d311d28c | 2915 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
4d7e6e51 | 2916 | block_input (); |
06e111a6 | 2917 | gr = getgrgid (gid); |
4d7e6e51 | 2918 | unblock_input (); |
06e111a6 DN |
2919 | if (gr) |
2920 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
2921 | ||
ab9980cd | 2922 | count = SPECPDL_INDEX (); |
06e111a6 DN |
2923 | strcpy (fn, procfn); |
2924 | procfn_end = fn + strlen (fn); | |
2925 | strcpy (procfn_end, "/stat"); | |
2926 | fd = emacs_open (fn, O_RDONLY, 0); | |
ab9980cd PE |
2927 | if (fd < 0) |
2928 | nread = 0; | |
2929 | else | |
2930 | { | |
2931 | record_unwind_protect_int (close_file_unwind, fd); | |
2932 | nread = emacs_read (fd, procbuf, sizeof procbuf - 1); | |
2933 | } | |
2934 | if (0 < nread) | |
06e111a6 DN |
2935 | { |
2936 | procbuf[nread] = '\0'; | |
2937 | p = procbuf; | |
2938 | ||
2939 | p = strchr (p, '('); | |
2940 | if (p != NULL) | |
2941 | { | |
2942 | q = strrchr (p + 1, ')'); | |
2943 | /* comm */ | |
2944 | if (q != NULL) | |
2945 | { | |
2946 | cmd = p + 1; | |
2947 | cmdsize = q - cmd; | |
2948 | } | |
2949 | } | |
2950 | else | |
2951 | q = NULL; | |
06e111a6 DN |
2952 | /* Command name is encoded in locale-coding-system; decode it. */ |
2953 | cmd_str = make_unibyte_string (cmd, cmdsize); | |
2954 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
2955 | Vlocale_coding_system, 0); | |
2956 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
2957 | ||
ab9980cd PE |
2958 | /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt |
2959 | utime stime cutime cstime priority nice thcount . start vsize rss */ | |
2960 | if (q | |
2961 | && (sscanf (q + 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu " | |
2962 | "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"), | |
2963 | &c, &ppid, &pgrp, &sess, &tty, &tpgid, | |
2964 | &minflt, &cminflt, &majflt, &cmajflt, | |
2965 | &u_time, &s_time, &cutime, &cstime, | |
2966 | &priority, &niceness, &thcount, &start, &vsize, &rss) | |
2967 | == 20)) | |
06e111a6 | 2968 | { |
ab9980cd PE |
2969 | char state_str[2]; |
2970 | state_str[0] = c; | |
2971 | state_str[1] = '\0'; | |
2972 | attrs = Fcons (Fcons (Qstate, build_string (state_str)), attrs); | |
2973 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid)), attrs); | |
2974 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp)), attrs); | |
2975 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess)), attrs); | |
06e111a6 | 2976 | attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs); |
ab9980cd | 2977 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid)), attrs); |
06e111a6 DN |
2978 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs); |
2979 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs); | |
ab9980cd PE |
2980 | attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), |
2981 | attrs); | |
2982 | attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), | |
2983 | attrs); | |
06e111a6 DN |
2984 | clocks_per_sec = sysconf (_SC_CLK_TCK); |
2985 | if (clocks_per_sec < 0) | |
2986 | clocks_per_sec = 100; | |
2987 | attrs = Fcons (Fcons (Qutime, | |
a70072c9 | 2988 | ltime_from_jiffies (u_time, clocks_per_sec)), |
06e111a6 DN |
2989 | attrs); |
2990 | attrs = Fcons (Fcons (Qstime, | |
a70072c9 | 2991 | ltime_from_jiffies (s_time, clocks_per_sec)), |
06e111a6 | 2992 | attrs); |
ac1e4171 | 2993 | attrs = Fcons (Fcons (Qtime, |
a70072c9 PE |
2994 | ltime_from_jiffies (s_time + u_time, |
2995 | clocks_per_sec)), | |
ac1e4171 | 2996 | attrs); |
06e111a6 DN |
2997 | attrs = Fcons (Fcons (Qcutime, |
2998 | ltime_from_jiffies (cutime, clocks_per_sec)), | |
2999 | attrs); | |
3000 | attrs = Fcons (Fcons (Qcstime, | |
3001 | ltime_from_jiffies (cstime, clocks_per_sec)), | |
ac1e4171 EZ |
3002 | attrs); |
3003 | attrs = Fcons (Fcons (Qctime, | |
ab9980cd PE |
3004 | ltime_from_jiffies (cstime + cutime, |
3005 | clocks_per_sec)), | |
06e111a6 DN |
3006 | attrs); |
3007 | attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs); | |
a70072c9 | 3008 | attrs = Fcons (Fcons (Qnice, make_number (niceness)), attrs); |
ab9980cd PE |
3009 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount)), |
3010 | attrs); | |
43aac990 | 3011 | tnow = current_timespec (); |
d35af63c | 3012 | telapsed = get_up_time (); |
43aac990 | 3013 | tboot = timespec_sub (tnow, telapsed); |
d35af63c | 3014 | tstart = time_from_jiffies (start, clocks_per_sec); |
43aac990 | 3015 | tstart = timespec_add (tboot, tstart); |
d35af63c | 3016 | attrs = Fcons (Fcons (Qstart, make_lisp_time (tstart)), attrs); |
ab9980cd PE |
3017 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize / 1024)), |
3018 | attrs); | |
3019 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4 * rss)), attrs); | |
43aac990 | 3020 | telapsed = timespec_sub (tnow, tstart); |
d35af63c PE |
3021 | attrs = Fcons (Fcons (Qetime, make_lisp_time (telapsed)), attrs); |
3022 | us_time = time_from_jiffies (u_time + s_time, clocks_per_sec); | |
43aac990 | 3023 | pcpu = timespectod (us_time) / timespectod (telapsed); |
06e111a6 DN |
3024 | if (pcpu > 1.0) |
3025 | pcpu = 1.0; | |
3026 | attrs = Fcons (Fcons (Qpcpu, make_float (100 * pcpu)), attrs); | |
3027 | pmem = 4.0 * 100 * rss / procfs_get_total_memory (); | |
3028 | if (pmem > 100) | |
3029 | pmem = 100; | |
3030 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); | |
3031 | } | |
3032 | } | |
ab9980cd | 3033 | unbind_to (count, Qnil); |
06e111a6 DN |
3034 | |
3035 | /* args */ | |
3036 | strcpy (procfn_end, "/cmdline"); | |
3037 | fd = emacs_open (fn, O_RDONLY, 0); | |
3038 | if (fd >= 0) | |
3039 | { | |
ab9980cd PE |
3040 | ptrdiff_t readsize, nread_incr; |
3041 | record_unwind_protect_int (close_file_unwind, fd); | |
3042 | record_unwind_protect_nothing (); | |
3043 | nread = cmdline_size = 0; | |
3044 | ||
3045 | do | |
06e111a6 | 3046 | { |
ab9980cd PE |
3047 | cmdline = xpalloc (cmdline, &cmdline_size, 2, STRING_BYTES_BOUND, 1); |
3048 | set_unwind_protect_ptr (count + 1, xfree, cmdline); | |
3049 | ||
3050 | /* Leave room even if every byte needs escaping below. */ | |
3051 | readsize = (cmdline_size >> 1) - nread; | |
3052 | ||
3053 | nread_incr = emacs_read (fd, cmdline + nread, readsize); | |
3054 | nread += max (0, nread_incr); | |
06e111a6 | 3055 | } |
ab9980cd PE |
3056 | while (nread_incr == readsize); |
3057 | ||
3058 | if (nread) | |
06e111a6 | 3059 | { |
06e111a6 | 3060 | /* We don't want trailing null characters. */ |
ab9980cd PE |
3061 | for (p = cmdline + nread; cmdline < p && !p[-1]; p--) |
3062 | continue; | |
3063 | ||
3064 | /* Escape-quote whitespace and backslashes. */ | |
3065 | q = cmdline + cmdline_size; | |
3066 | while (cmdline < p) | |
06e111a6 | 3067 | { |
ab9980cd PE |
3068 | char c = *--p; |
3069 | *--q = c ? c : ' '; | |
3070 | if (c_isspace (c) || c == '\\') | |
3071 | *--q = '\\'; | |
06e111a6 | 3072 | } |
ab9980cd PE |
3073 | |
3074 | nread = cmdline + cmdline_size - q; | |
06e111a6 | 3075 | } |
ab9980cd PE |
3076 | |
3077 | if (!nread) | |
06e111a6 | 3078 | { |
ab9980cd PE |
3079 | nread = cmdsize + 2; |
3080 | cmdline_size = nread + 1; | |
3081 | q = cmdline = xrealloc (cmdline, cmdline_size); | |
3082 | set_unwind_protect_ptr (count + 1, xfree, cmdline); | |
e99a530f | 3083 | sprintf (cmdline, "[%.*s]", cmdsize, cmd); |
06e111a6 | 3084 | } |
06e111a6 | 3085 | /* Command line is encoded in locale-coding-system; decode it. */ |
ab9980cd | 3086 | cmd_str = make_unibyte_string (q, nread); |
06e111a6 DN |
3087 | decoded_cmd = code_convert_string_norecord (cmd_str, |
3088 | Vlocale_coding_system, 0); | |
ab9980cd | 3089 | unbind_to (count, Qnil); |
06e111a6 DN |
3090 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); |
3091 | } | |
3092 | ||
3093 | UNGCPRO; | |
3094 | return attrs; | |
3095 | } | |
91c85b70 | 3096 | |
f4f634e8 DN |
3097 | #elif defined (SOLARIS2) && defined (HAVE_PROCFS) |
3098 | ||
3099 | /* The <procfs.h> header does not like to be included if _LP64 is defined and | |
3100 | __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */ | |
3101 | #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) | |
3102 | #define PROCFS_FILE_OFFSET_BITS_HACK 1 | |
3103 | #undef _FILE_OFFSET_BITS | |
3104 | #else | |
3105 | #define PROCFS_FILE_OFFSET_BITS_HACK 0 | |
3106 | #endif | |
3107 | ||
3108 | #include <procfs.h> | |
3109 | ||
3110 | #if PROCFS_FILE_OFFSET_BITS_HACK == 1 | |
3111 | #define _FILE_OFFSET_BITS 64 | |
90efadd1 PE |
3112 | #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */ |
3113 | #endif | |
f4f634e8 DN |
3114 | #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */ |
3115 | ||
3116 | Lisp_Object | |
3117 | system_process_attributes (Lisp_Object pid) | |
3118 | { | |
3119 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
3120 | struct stat st; | |
3121 | struct passwd *pw; | |
3122 | struct group *gr; | |
3123 | char *procfn_end; | |
3124 | struct psinfo pinfo; | |
3125 | int fd; | |
3126 | ssize_t nread; | |
d311d28c PE |
3127 | printmax_t proc_id; |
3128 | uid_t uid; | |
3129 | gid_t gid; | |
f4f634e8 | 3130 | Lisp_Object attrs = Qnil; |
ab9980cd | 3131 | Lisp_Object decoded_cmd; |
f4f634e8 | 3132 | struct gcpro gcpro1, gcpro2; |
ab9980cd | 3133 | ptrdiff_t count; |
f4f634e8 DN |
3134 | |
3135 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 3136 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 3137 | sprintf (procfn, "/proc/%"pMd, proc_id); |
f4f634e8 DN |
3138 | if (stat (procfn, &st) < 0) |
3139 | return attrs; | |
3140 | ||
3141 | GCPRO2 (attrs, decoded_cmd); | |
3142 | ||
3143 | /* euid egid */ | |
3144 | uid = st.st_uid; | |
d311d28c | 3145 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
4d7e6e51 | 3146 | block_input (); |
f4f634e8 | 3147 | pw = getpwuid (uid); |
4d7e6e51 | 3148 | unblock_input (); |
f4f634e8 DN |
3149 | if (pw) |
3150 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3151 | ||
3152 | gid = st.st_gid; | |
d311d28c | 3153 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
4d7e6e51 | 3154 | block_input (); |
f4f634e8 | 3155 | gr = getgrgid (gid); |
4d7e6e51 | 3156 | unblock_input (); |
f4f634e8 DN |
3157 | if (gr) |
3158 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3159 | ||
ab9980cd | 3160 | count = SPECPDL_INDEX (); |
f4f634e8 DN |
3161 | strcpy (fn, procfn); |
3162 | procfn_end = fn + strlen (fn); | |
3163 | strcpy (procfn_end, "/psinfo"); | |
3164 | fd = emacs_open (fn, O_RDONLY, 0); | |
ab9980cd PE |
3165 | if (fd < 0) |
3166 | nread = 0; | |
3167 | else | |
f4f634e8 | 3168 | { |
ab9980cd PE |
3169 | record_unwind_protect (close_file_unwind, fd); |
3170 | nread = emacs_read (fd, &pinfo, sizeof pinfo); | |
f4f634e8 DN |
3171 | } |
3172 | ||
ab9980cd PE |
3173 | if (nread == sizeof pinfo) |
3174 | { | |
3175 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs); | |
3176 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs); | |
3177 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (pinfo.pr_sid)), attrs); | |
3178 | ||
3179 | { | |
3180 | char state_str[2]; | |
3181 | state_str[0] = pinfo.pr_lwp.pr_sname; | |
3182 | state_str[1] = '\0'; | |
3183 | attrs = Fcons (Fcons (Qstate, build_string (state_str)), attrs); | |
3184 | } | |
2d2d05d8 | 3185 | |
ab9980cd PE |
3186 | /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t, |
3187 | need to get a string from it. */ | |
3188 | ||
3189 | /* FIXME: missing: Qtpgid */ | |
3190 | ||
3191 | /* FIXME: missing: | |
3192 | Qminflt | |
3193 | Qmajflt | |
3194 | Qcminflt | |
3195 | Qcmajflt | |
3196 | ||
3197 | Qutime | |
3198 | Qcutime | |
3199 | Qstime | |
3200 | Qcstime | |
3201 | Are they available? */ | |
3202 | ||
3203 | attrs = Fcons (Fcons (Qtime, make_lisp_time (pinfo.pr_time)), attrs); | |
3204 | attrs = Fcons (Fcons (Qctime, make_lisp_time (pinfo.pr_ctime)), attrs); | |
3205 | attrs = Fcons (Fcons (Qpri, make_number (pinfo.pr_lwp.pr_pri)), attrs); | |
3206 | attrs = Fcons (Fcons (Qnice, make_number (pinfo.pr_lwp.pr_nice)), attrs); | |
3207 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pinfo.pr_nlwp)), | |
3208 | attrs); | |
3209 | ||
3210 | attrs = Fcons (Fcons (Qstart, make_lisp_time (pinfo.pr_start)), attrs); | |
3211 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (pinfo.pr_size)), | |
3212 | attrs); | |
3213 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (pinfo.pr_rssize)), | |
3214 | attrs); | |
3215 | ||
3216 | /* pr_pctcpu and pr_pctmem are unsigned integers in the | |
3217 | range 0 .. 2**15, representing 0.0 .. 1.0. */ | |
3218 | attrs = Fcons (Fcons (Qpcpu, | |
3219 | make_float (100.0 / 0x8000 * pinfo.pr_pctcpu)), | |
3220 | attrs); | |
3221 | attrs = Fcons (Fcons (Qpmem, | |
3222 | make_float (100.0 / 0x8000 * pinfo.pr_pctmem)), | |
3223 | attrs); | |
3224 | ||
3225 | decoded_cmd = (code_convert_string_norecord | |
309f24d1 | 3226 | (build_unibyte_string (pinfo.pr_fname), |
ab9980cd PE |
3227 | Vlocale_coding_system, 0)); |
3228 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
3229 | decoded_cmd = (code_convert_string_norecord | |
309f24d1 | 3230 | (build_unibyte_string (pinfo.pr_psargs), |
ab9980cd PE |
3231 | Vlocale_coding_system, 0)); |
3232 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
3233 | } | |
3234 | unbind_to (count, Qnil); | |
f4f634e8 DN |
3235 | UNGCPRO; |
3236 | return attrs; | |
3237 | } | |
06e111a6 | 3238 | |
5790543d | 3239 | #elif defined __FreeBSD__ |
b91b7e4d | 3240 | |
43aac990 PE |
3241 | static struct timespec |
3242 | timeval_to_timespec (struct timeval t) | |
d054f3fb | 3243 | { |
43aac990 | 3244 | return make_timespec (t.tv_sec, t.tv_usec * 1000); |
d054f3fb PE |
3245 | } |
3246 | ||
3247 | static Lisp_Object | |
db7b8d06 | 3248 | make_lisp_timeval (struct timeval t) |
d054f3fb | 3249 | { |
43aac990 | 3250 | return make_lisp_time (timeval_to_timespec (t)); |
d054f3fb PE |
3251 | } |
3252 | ||
b91b7e4d EW |
3253 | Lisp_Object |
3254 | system_process_attributes (Lisp_Object pid) | |
3255 | { | |
3256 | int proc_id; | |
5790543d | 3257 | int pagesize = getpagesize (); |
9c05bccf | 3258 | unsigned long npages; |
b91b7e4d EW |
3259 | int fscale; |
3260 | struct passwd *pw; | |
3261 | struct group *gr; | |
3262 | char *ttyname; | |
3263 | size_t len; | |
3264 | char args[MAXPATHLEN]; | |
43aac990 | 3265 | struct timespec t, now; |
5790543d | 3266 | |
b91b7e4d EW |
3267 | int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID}; |
3268 | struct kinfo_proc proc; | |
5790543d | 3269 | size_t proclen = sizeof proc; |
b91b7e4d EW |
3270 | |
3271 | struct gcpro gcpro1, gcpro2; | |
3272 | Lisp_Object attrs = Qnil; | |
3273 | Lisp_Object decoded_comm; | |
5790543d | 3274 | |
b91b7e4d | 3275 | CHECK_NUMBER_OR_FLOAT (pid); |
af52196c | 3276 | CONS_TO_INTEGER (pid, int, proc_id); |
b91b7e4d | 3277 | mib[3] = proc_id; |
5790543d | 3278 | |
b91b7e4d EW |
3279 | if (sysctl (mib, 4, &proc, &proclen, NULL, 0) != 0) |
3280 | return attrs; | |
3281 | ||
3282 | GCPRO2 (attrs, decoded_comm); | |
5790543d PE |
3283 | |
3284 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (proc.ki_uid)), attrs); | |
3285 | ||
4d7e6e51 | 3286 | block_input (); |
b91b7e4d | 3287 | pw = getpwuid (proc.ki_uid); |
4d7e6e51 | 3288 | unblock_input (); |
b91b7e4d EW |
3289 | if (pw) |
3290 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3291 | ||
5790543d | 3292 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (proc.ki_svgid)), attrs); |
b91b7e4d | 3293 | |
4d7e6e51 | 3294 | block_input (); |
b91b7e4d | 3295 | gr = getgrgid (proc.ki_svgid); |
4d7e6e51 | 3296 | unblock_input (); |
b91b7e4d EW |
3297 | if (gr) |
3298 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3299 | ||
309f24d1 DA |
3300 | decoded_comm = (code_convert_string_norecord |
3301 | (build_unibyte_string (proc.ki_comm), | |
3302 | Vlocale_coding_system, 0)); | |
5790543d | 3303 | |
b91b7e4d EW |
3304 | attrs = Fcons (Fcons (Qcomm, decoded_comm), attrs); |
3305 | { | |
3306 | char state[2] = {'\0', '\0'}; | |
3307 | switch (proc.ki_stat) | |
3308 | { | |
3309 | case SRUN: | |
3310 | state[0] = 'R'; | |
3311 | break; | |
3312 | ||
3313 | case SSLEEP: | |
3314 | state[0] = 'S'; | |
3315 | break; | |
5790543d | 3316 | |
b91b7e4d EW |
3317 | case SLOCK: |
3318 | state[0] = 'D'; | |
3319 | break; | |
3320 | ||
3321 | case SZOMB: | |
3322 | state[0] = 'Z'; | |
3323 | break; | |
5790543d | 3324 | |
b91b7e4d EW |
3325 | case SSTOP: |
3326 | state[0] = 'T'; | |
3327 | break; | |
3328 | } | |
3329 | attrs = Fcons (Fcons (Qstate, build_string (state)), attrs); | |
3330 | } | |
5790543d | 3331 | |
b91b7e4d EW |
3332 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (proc.ki_ppid)), attrs); |
3333 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (proc.ki_pgid)), attrs); | |
3334 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (proc.ki_sid)), attrs); | |
3335 | ||
4d7e6e51 | 3336 | block_input (); |
b91b7e4d | 3337 | ttyname = proc.ki_tdev == NODEV ? NULL : devname (proc.ki_tdev, S_IFCHR); |
4d7e6e51 | 3338 | unblock_input (); |
b91b7e4d EW |
3339 | if (ttyname) |
3340 | attrs = Fcons (Fcons (Qtty, build_string (ttyname)), attrs); | |
5790543d | 3341 | |
b91b7e4d EW |
3342 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (proc.ki_tpgid)), attrs); |
3343 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (proc.ki_rusage.ru_minflt)), attrs); | |
3344 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (proc.ki_rusage.ru_majflt)), attrs); | |
3345 | attrs = Fcons (Fcons (Qcminflt, make_number (proc.ki_rusage_ch.ru_minflt)), attrs); | |
3346 | attrs = Fcons (Fcons (Qcmajflt, make_number (proc.ki_rusage_ch.ru_majflt)), attrs); | |
3347 | ||
db7b8d06 PE |
3348 | attrs = Fcons (Fcons (Qutime, make_lisp_timeval (proc.ki_rusage.ru_utime)), |
3349 | attrs); | |
3350 | attrs = Fcons (Fcons (Qstime, make_lisp_timeval (proc.ki_rusage.ru_stime)), | |
3351 | attrs); | |
43aac990 PE |
3352 | t = timespec_add (timeval_to_timespec (proc.ki_rusage.ru_utime), |
3353 | timeval_to_timespec (proc.ki_rusage.ru_stime)); | |
db7b8d06 | 3354 | attrs = Fcons (Fcons (Qtime, make_lisp_time (t)), attrs); |
b91b7e4d | 3355 | |
db7b8d06 PE |
3356 | attrs = Fcons (Fcons (Qcutime, |
3357 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3358 | attrs); | |
3359 | attrs = Fcons (Fcons (Qcstime, | |
3360 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3361 | attrs); | |
43aac990 PE |
3362 | t = timespec_add (timeval_to_timespec (proc.ki_rusage_ch.ru_utime), |
3363 | timeval_to_timespec (proc.ki_rusage_ch.ru_stime)); | |
db7b8d06 | 3364 | attrs = Fcons (Fcons (Qctime, make_lisp_time (t)), attrs); |
b91b7e4d | 3365 | |
5790543d PE |
3366 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (proc.ki_numthreads)), |
3367 | attrs); | |
b91b7e4d EW |
3368 | attrs = Fcons (Fcons (Qpri, make_number (proc.ki_pri.pri_native)), attrs); |
3369 | attrs = Fcons (Fcons (Qnice, make_number (proc.ki_nice)), attrs); | |
db7b8d06 | 3370 | attrs = Fcons (Fcons (Qstart, make_lisp_timeval (proc.ki_start)), attrs); |
b91b7e4d | 3371 | attrs = Fcons (Fcons (Qvsize, make_number (proc.ki_size >> 10)), attrs); |
5790543d PE |
3372 | attrs = Fcons (Fcons (Qrss, make_number (proc.ki_rssize * pagesize >> 10)), |
3373 | attrs); | |
b91b7e4d | 3374 | |
43aac990 PE |
3375 | now = current_timespec (); |
3376 | t = timespec_sub (now, timeval_to_timespec (proc.ki_start)); | |
db7b8d06 | 3377 | attrs = Fcons (Fcons (Qetime, make_lisp_time (t)), attrs); |
b91b7e4d | 3378 | |
5790543d | 3379 | len = sizeof fscale; |
b91b7e4d EW |
3380 | if (sysctlbyname ("kern.fscale", &fscale, &len, NULL, 0) == 0) |
3381 | { | |
5790543d | 3382 | double pcpu; |
b91b7e4d | 3383 | fixpt_t ccpu; |
5790543d | 3384 | len = sizeof ccpu; |
b91b7e4d EW |
3385 | if (sysctlbyname ("kern.ccpu", &ccpu, &len, NULL, 0) == 0) |
3386 | { | |
5790543d PE |
3387 | pcpu = (100.0 * proc.ki_pctcpu / fscale |
3388 | / (1 - exp (proc.ki_swtime * log ((double) ccpu / fscale)))); | |
3389 | attrs = Fcons (Fcons (Qpcpu, make_fixnum_or_float (pcpu)), attrs); | |
b91b7e4d EW |
3390 | } |
3391 | } | |
3392 | ||
5790543d | 3393 | len = sizeof npages; |
b91b7e4d EW |
3394 | if (sysctlbyname ("hw.availpages", &npages, &len, NULL, 0) == 0) |
3395 | { | |
5790543d PE |
3396 | double pmem = (proc.ki_flag & P_INMEM |
3397 | ? 100.0 * proc.ki_rssize / npages | |
3398 | : 0); | |
3399 | attrs = Fcons (Fcons (Qpmem, make_fixnum_or_float (pmem)), attrs); | |
b91b7e4d EW |
3400 | } |
3401 | ||
3402 | mib[2] = KERN_PROC_ARGS; | |
3403 | len = MAXPATHLEN; | |
3404 | if (sysctl (mib, 4, args, &len, NULL, 0) == 0) | |
3405 | { | |
3406 | int i; | |
3407 | for (i = 0; i < len; i++) | |
3408 | { | |
3409 | if (! args[i] && i < len - 1) | |
3410 | args[i] = ' '; | |
3411 | } | |
3412 | ||
5790543d PE |
3413 | decoded_comm = |
3414 | (code_convert_string_norecord | |
d7ea76b4 | 3415 | (build_unibyte_string (args), |
5790543d | 3416 | Vlocale_coding_system, 0)); |
b91b7e4d EW |
3417 | |
3418 | attrs = Fcons (Fcons (Qargs, decoded_comm), attrs); | |
3419 | } | |
5790543d | 3420 | |
b91b7e4d EW |
3421 | UNGCPRO; |
3422 | return attrs; | |
3423 | } | |
3424 | ||
f8d23104 DN |
3425 | /* The WINDOWSNT implementation is in w32.c. |
3426 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 3427 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
3428 | |
3429 | Lisp_Object | |
3430 | system_process_attributes (Lisp_Object pid) | |
3431 | { | |
9dcbe89b | 3432 | return Qnil; |
06e111a6 DN |
3433 | } |
3434 | ||
3435 | #endif /* !defined (WINDOWSNT) */ |