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) | |
309 | *input_available_clear_time = make_emacs_time (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 | ||
86a5659e JB |
340 | /* |
341 | * flush any pending output | |
342 | * (may flush input as well; it does not matter the way we use it) | |
343 | */ | |
177c0ea7 | 344 | |
08633194 | 345 | void |
971de7fb | 346 | flush_pending_output (int channel) |
86a5659e | 347 | { |
9de940b5 | 348 | /* FIXME: maybe this function should be removed */ |
86a5659e | 349 | } |
64e971c3 | 350 | \f |
86a5659e JB |
351 | /* Set up the terminal at the other end of a pseudo-terminal that |
352 | we will be controlling an inferior through. | |
353 | It should not echo or do line-editing, since that is done | |
354 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
355 | ||
08633194 | 356 | void |
971de7fb | 357 | child_setup_tty (int out) |
86a5659e | 358 | { |
77defa9a | 359 | #ifndef WINDOWSNT |
91bac16a JB |
360 | struct emacs_tty s; |
361 | ||
12e610e8 | 362 | emacs_get_tty (out, &s); |
91bac16a JB |
363 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
364 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 365 | #ifdef NLDLY |
07cfc4e7 GM |
366 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html |
367 | Some versions of GNU Hurd do not have FFDLY? */ | |
368 | #ifdef FFDLY | |
91bac16a JB |
369 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
370 | /* No output delays */ | |
07cfc4e7 GM |
371 | #else |
372 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY); | |
373 | /* No output delays */ | |
374 | #endif | |
9d4e5eea | 375 | #endif |
91bac16a JB |
376 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
377 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
378 | #ifdef IUCLC |
379 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
380 | #endif | |
f7097b2a RS |
381 | #ifdef ISTRIP |
382 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
383 | #endif | |
23e4c8be | 384 | #ifdef OLCUC |
9d4e5eea RS |
385 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
386 | #endif | |
f7097b2a | 387 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 388 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
441f6399 RS |
389 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
390 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 391 | |
86a5659e | 392 | #ifdef HPUX |
91bac16a | 393 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 394 | #endif /* HPUX */ |
91bac16a | 395 | |
dfe598b5 RS |
396 | #ifdef SIGNALS_VIA_CHARACTERS |
397 | /* the QUIT and INTR character are used in process_send_signal | |
398 | so set them here to something useful. */ | |
fa51fa32 | 399 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 400 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 401 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
402 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
403 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
404 | ||
86a5659e | 405 | #ifdef AIX |
86a5659e JB |
406 | /* Also, PTY overloads NUL and BREAK. |
407 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
408 | s.main.c_iflag &= ~IGNBRK; |
409 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
410 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
411 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
412 | would force it to 0377. That looks like duplicated code. */ | |
91bac16a | 413 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
414 | #endif /* AIX */ |
415 | ||
aaa0a19a | 416 | /* We originally enabled ICANON (and set VEOF to 04), and then had |
c80e3b4a | 417 | process.c send additional EOF chars to flush the output when faced |
aaa0a19a | 418 | with long lines, but this leads to weird effects when the |
2b0a91e7 SM |
419 | subprocess has disabled ICANON and ends up seeing those spurious |
420 | extra EOFs. So we don't send EOFs any more in | |
aaa0a19a SM |
421 | process.c:send_process. First we tried to disable ICANON by |
422 | default, so if a subsprocess sets up ICANON, it's his problem (or | |
423 | the Elisp package that talks to it) to deal with lines that are | |
424 | too long. But this disables some features, such as the ability | |
425 | to send EOF signals. So we re-enabled ICANON but there is no | |
426 | more "send eof to flush" going on (which is wrong and unportable | |
427 | in itself). The correct way to handle too much output is to | |
428 | buffer what could not be written and then write it again when | |
429 | select returns ok for writing. This has it own set of | |
430 | problems. Write is now asynchronous, is that a problem? How much | |
431 | do we buffer, and what do we do when that limit is reached? */ | |
9a747ba6 JD |
432 | |
433 | s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */ | |
434 | s.main.c_cc[VEOF] = 'D'&037; /* Control-D */ | |
3d15fe78 | 435 | #if 0 /* These settings only apply to non-ICANON mode. */ |
2b0a91e7 SM |
436 | s.main.c_cc[VMIN] = 1; |
437 | s.main.c_cc[VTIME] = 0; | |
aaa0a19a | 438 | #endif |
2b0a91e7 | 439 | |
12e610e8 | 440 | emacs_set_tty (out, &s, 0); |
77defa9a | 441 | #endif /* not WINDOWSNT */ |
86a5659e | 442 | } |
57507bf8 | 443 | #endif /* not MSDOS */ |
86a5659e | 444 | |
64e971c3 | 445 | \f |
2fe28299 | 446 | /* Record a signal code and the action for it. */ |
86a5659e JB |
447 | struct save_signal |
448 | { | |
449 | int code; | |
2fe28299 | 450 | struct sigaction action; |
86a5659e JB |
451 | }; |
452 | ||
f57e2426 J |
453 | static void save_signal_handlers (struct save_signal *); |
454 | static void restore_signal_handlers (struct save_signal *); | |
35a05cca | 455 | |
86a5659e JB |
456 | /* Suspend the Emacs process; give terminal to its superior. */ |
457 | ||
08633194 | 458 | void |
971de7fb | 459 | sys_suspend (void) |
86a5659e | 460 | { |
d983a10b PE |
461 | #ifndef DOS_NT |
462 | kill (0, SIGTSTP); | |
463 | #else | |
86a5659e JB |
464 | /* On a system where suspending is not implemented, |
465 | instead fork a subshell and let it talk directly to the terminal | |
466 | while we wait. */ | |
a0932daa KH |
467 | sys_subshell (); |
468 | ||
d983a10b | 469 | #endif |
a0932daa KH |
470 | } |
471 | ||
472 | /* Fork a subshell. */ | |
473 | ||
08633194 | 474 | void |
971de7fb | 475 | sys_subshell (void) |
a0932daa | 476 | { |
ad00c243 | 477 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
478 | int st; |
479 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
480 | #endif | |
5fbab051 | 481 | pid_t pid; |
bb5f74ee | 482 | int status; |
86a5659e | 483 | struct save_signal saved_handlers[5]; |
efa04277 | 484 | Lisp_Object dir; |
5e41f65d | 485 | unsigned char *volatile str_volatile = 0; |
7e9123a2 | 486 | unsigned char *str; |
efa04277 | 487 | int len; |
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 | ||
efa04277 RS |
499 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
500 | which somehow wedges the hp compiler. So instead... */ | |
501 | ||
502 | dir = intern ("default-directory"); | |
0e7e7a58 | 503 | if (NILP (Fboundp (dir))) |
efa04277 RS |
504 | goto xyzzy; |
505 | dir = Fsymbol_value (dir); | |
914e81a2 | 506 | if (!STRINGP (dir)) |
efa04277 RS |
507 | goto xyzzy; |
508 | ||
509 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
38182d90 | 510 | str_volatile = str = alloca (SCHARS (dir) + 2); |
d5db4077 | 511 | len = SCHARS (dir); |
72af86bd | 512 | memcpy (str, SDATA (dir), len); |
efa04277 RS |
513 | if (str[len - 1] != '/') str[len++] = '/'; |
514 | str[len] = 0; | |
515 | xyzzy: | |
516 | ||
ad00c243 | 517 | #ifdef DOS_NT |
7964ba9e | 518 | pid = 0; |
718ca3cf | 519 | save_signal_handlers (saved_handlers); |
177c0ea7 | 520 | #else |
efa04277 | 521 | pid = vfork (); |
86a5659e JB |
522 | if (pid == -1) |
523 | error ("Can't spawn subshell"); | |
7964ba9e RS |
524 | #endif |
525 | ||
86a5659e JB |
526 | if (pid == 0) |
527 | { | |
8ea90aa3 | 528 | const char *sh = 0; |
86a5659e | 529 | |
ad00c243 | 530 | #ifdef DOS_NT /* MW, Aug 1993 */ |
9239d970 | 531 | getcwd (oldwd, sizeof oldwd); |
7964ba9e | 532 | if (sh == 0) |
83be8524 | 533 | sh = egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ |
207bdbdb | 534 | #endif |
7964ba9e | 535 | if (sh == 0) |
83be8524 | 536 | sh = egetenv ("SHELL"); |
86a5659e JB |
537 | if (sh == 0) |
538 | sh = "sh"; | |
207bdbdb | 539 | |
86a5659e | 540 | /* Use our buffer's default directory for the subshell. */ |
5e41f65d | 541 | str = str_volatile; |
32299e33 PE |
542 | if (str && chdir ((char *) str) != 0) |
543 | { | |
544 | #ifndef DOS_NT | |
4ebbdd67 PE |
545 | emacs_perror ((char *) str); |
546 | _exit (EXIT_CANCELED); | |
32299e33 PE |
547 | #endif |
548 | } | |
efa04277 | 549 | |
fe03522b | 550 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 551 | { |
48178f9a EZ |
552 | char *epwd = getenv ("PWD"); |
553 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
554 | |
555 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 556 | if (epwd) |
c0917202 | 557 | { |
48178f9a | 558 | strcpy (old_pwd, epwd); |
c0917202 EZ |
559 | if (str[len - 1] == '/') |
560 | str[len - 1] = '\0'; | |
561 | setenv ("PWD", str, 1); | |
562 | } | |
563 | st = system (sh); | |
32299e33 | 564 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
48178f9a | 565 | if (epwd) |
c0917202 EZ |
566 | putenv (old_pwd); /* restore previous value */ |
567 | } | |
207bdbdb | 568 | #else /* not MSDOS */ |
fe03522b | 569 | #ifdef WINDOWSNT |
fe03522b RS |
570 | /* Waits for process completion */ |
571 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
32299e33 | 572 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
fe03522b RS |
573 | if (pid == -1) |
574 | write (1, "Can't execute subshell", 22); | |
fe03522b | 575 | #else /* not WINDOWSNT */ |
e120ea40 | 576 | execlp (sh, sh, (char *) 0); |
4ebbdd67 PE |
577 | emacs_perror (sh); |
578 | _exit (errno == ENOENT ? EXIT_ENOENT : EXIT_CANNOT_INVOKE); | |
fe03522b | 579 | #endif /* not WINDOWSNT */ |
207bdbdb | 580 | #endif /* not MSDOS */ |
86a5659e JB |
581 | } |
582 | ||
718ca3cf | 583 | /* Do this now if we did not do it before. */ |
ed68db4d | 584 | #ifndef MSDOS |
86a5659e | 585 | save_signal_handlers (saved_handlers); |
718ca3cf RS |
586 | #endif |
587 | ||
ad00c243 | 588 | #ifndef DOS_NT |
bb5f74ee | 589 | wait_for_termination (pid, &status, 0); |
7964ba9e | 590 | #endif |
86a5659e | 591 | restore_signal_handlers (saved_handlers); |
86a5659e JB |
592 | } |
593 | ||
35a05cca | 594 | static void |
971de7fb | 595 | save_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
596 | { |
597 | while (saved_handlers->code) | |
598 | { | |
2fe28299 PE |
599 | struct sigaction action; |
600 | emacs_sigaction_init (&action, SIG_IGN); | |
601 | sigaction (saved_handlers->code, &action, &saved_handlers->action); | |
86a5659e JB |
602 | saved_handlers++; |
603 | } | |
604 | } | |
605 | ||
35a05cca | 606 | static void |
971de7fb | 607 | restore_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
608 | { |
609 | while (saved_handlers->code) | |
610 | { | |
2fe28299 | 611 | sigaction (saved_handlers->code, &saved_handlers->action, 0); |
86a5659e JB |
612 | saved_handlers++; |
613 | } | |
614 | } | |
615 | \f | |
4a4bbad2 | 616 | #ifdef USABLE_SIGIO |
1fa53021 | 617 | static int old_fcntl_flags[MAXDESC]; |
4a4bbad2 | 618 | #endif |
86a5659e | 619 | |
08633194 | 620 | void |
971de7fb | 621 | init_sigio (int fd) |
86a5659e | 622 | { |
4a4bbad2 | 623 | #ifdef USABLE_SIGIO |
819b8f00 KL |
624 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
625 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
23dab951 | 626 | interrupts_deferred = 0; |
4a4bbad2 | 627 | #endif |
86a5659e JB |
628 | } |
629 | ||
604efe86 | 630 | static void |
971de7fb | 631 | reset_sigio (int fd) |
86a5659e | 632 | { |
4a4bbad2 | 633 | #ifdef USABLE_SIGIO |
819b8f00 | 634 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 635 | #endif |
86a5659e JB |
636 | } |
637 | ||
08633194 | 638 | void |
971de7fb | 639 | request_sigio (void) |
86a5659e | 640 | { |
4a4bbad2 | 641 | #ifdef USABLE_SIGIO |
2fe28299 PE |
642 | sigset_t unblocked; |
643 | ||
6bbba5a6 | 644 | if (noninteractive) |
23dab951 RS |
645 | return; |
646 | ||
2fe28299 | 647 | sigemptyset (&unblocked); |
4a4bbad2 | 648 | # ifdef SIGWINCH |
2fe28299 | 649 | sigaddset (&unblocked, SIGWINCH); |
4a4bbad2 | 650 | # endif |
2fe28299 PE |
651 | sigaddset (&unblocked, SIGIO); |
652 | pthread_sigmask (SIG_UNBLOCK, &unblocked, 0); | |
86a5659e JB |
653 | |
654 | interrupts_deferred = 0; | |
4a4bbad2 | 655 | #endif |
86a5659e JB |
656 | } |
657 | ||
08633194 | 658 | void |
0a125897 | 659 | unrequest_sigio (void) |
cf84bb53 | 660 | { |
4a4bbad2 | 661 | #ifdef USABLE_SIGIO |
2fe28299 PE |
662 | sigset_t blocked; |
663 | ||
6bbba5a6 KL |
664 | if (noninteractive) |
665 | return; | |
666 | ||
2fe28299 | 667 | sigemptyset (&blocked); |
4a4bbad2 | 668 | # ifdef SIGWINCH |
2fe28299 | 669 | sigaddset (&blocked, SIGWINCH); |
4a4bbad2 | 670 | # endif |
2fe28299 PE |
671 | sigaddset (&blocked, SIGIO); |
672 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
86a5659e | 673 | interrupts_deferred = 1; |
4a4bbad2 | 674 | #endif |
86a5659e | 675 | } |
177c0ea7 | 676 | |
08633194 | 677 | void |
4a4bbad2 | 678 | ignore_sigio (void) |
86a5659e | 679 | { |
4a4bbad2 PE |
680 | #ifdef USABLE_SIGIO |
681 | signal (SIGIO, SIG_IGN); | |
682 | #endif | |
86a5659e | 683 | } |
feb67dfe | 684 | |
9ae8f997 | 685 | \f |
322aea6d PE |
686 | /* Saving and restoring the process group of Emacs's terminal. */ |
687 | ||
688 | /* The process group of which Emacs was a member when it initially | |
689 | started. | |
690 | ||
691 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
692 | getpid ()), then we know we're running under a shell with job | |
693 | control (Emacs would never be run as part of a pipeline). | |
694 | Everything is fine. | |
695 | ||
696 | If Emacs was not in its own process group, then we know we're | |
697 | running under a shell (or a caller) that doesn't know how to | |
698 | separate itself from Emacs (like sh). Emacs must be in its own | |
699 | process group in order to receive SIGIO correctly. In this | |
700 | situation, we put ourselves in our own pgroup, forcibly set the | |
701 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
702 | the tty's pgroup just like any other terminal setting. If | |
703 | inherited_group was not the tty's pgroup, then we'll get a | |
704 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
705 | it goes foreground in the future, which is what should happen. */ | |
706 | ||
707 | static pid_t inherited_pgroup; | |
708 | ||
709 | void | |
710 | init_foreground_group (void) | |
711 | { | |
dd0333b6 | 712 | pid_t pgrp = getpgrp (); |
322aea6d PE |
713 | inherited_pgroup = getpid () == pgrp ? 0 : pgrp; |
714 | } | |
715 | ||
b8956427 PE |
716 | /* Block and unblock SIGTTOU. */ |
717 | ||
718 | void | |
719 | block_tty_out_signal (void) | |
720 | { | |
721 | #ifdef SIGTTOU | |
722 | sigset_t blocked; | |
723 | sigemptyset (&blocked); | |
724 | sigaddset (&blocked, SIGTTOU); | |
725 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
726 | #endif | |
727 | } | |
728 | ||
729 | void | |
730 | unblock_tty_out_signal (void) | |
731 | { | |
732 | #ifdef SIGTTOU | |
733 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
734 | #endif | |
735 | } | |
736 | ||
322aea6d PE |
737 | /* Safely set a controlling terminal FD's process group to PGID. |
738 | If we are not in the foreground already, POSIX requires tcsetpgrp | |
739 | to deliver a SIGTTOU signal, which would stop us. This is an | |
740 | annoyance, so temporarily ignore the signal. | |
741 | ||
742 | In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so | |
743 | skip all this unless SIGTTOU is defined. */ | |
744 | static void | |
745 | tcsetpgrp_without_stopping (int fd, pid_t pgid) | |
746 | { | |
747 | #ifdef SIGTTOU | |
322aea6d | 748 | block_input (); |
b8956427 | 749 | block_tty_out_signal (); |
322aea6d | 750 | tcsetpgrp (fd, pgid); |
b8956427 | 751 | unblock_tty_out_signal (); |
322aea6d PE |
752 | unblock_input (); |
753 | #endif | |
754 | } | |
755 | ||
756 | /* Split off the foreground process group to Emacs alone. When we are | |
757 | in the foreground, but not started in our own process group, | |
758 | redirect the tty device handle FD to point to our own process | |
759 | group. FD must be the file descriptor of the controlling tty. */ | |
760 | static void | |
761 | narrow_foreground_group (int fd) | |
762 | { | |
763 | if (inherited_pgroup && setpgid (0, 0) == 0) | |
764 | tcsetpgrp_without_stopping (fd, getpid ()); | |
765 | } | |
766 | ||
767 | /* Set the tty to our original foreground group. */ | |
768 | static void | |
769 | widen_foreground_group (int fd) | |
770 | { | |
771 | if (inherited_pgroup && setpgid (0, inherited_pgroup) == 0) | |
772 | tcsetpgrp_without_stopping (fd, inherited_pgroup); | |
773 | } | |
774 | \f | |
68936329 JB |
775 | /* Getting and setting emacs_tty structures. */ |
776 | ||
653d4f43 PE |
777 | /* Set *TC to the parameters associated with the terminal FD, |
778 | or clear it if the parameters are not available. */ | |
779 | static void | |
971de7fb | 780 | emacs_get_tty (int fd, struct emacs_tty *settings) |
68936329 JB |
781 | { |
782 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 783 | #ifndef DOS_NT |
68936329 | 784 | /* We have those nifty POSIX tcmumbleattr functions. */ |
72af86bd | 785 | memset (&settings->main, 0, sizeof (settings->main)); |
653d4f43 | 786 | tcgetattr (fd, &settings->main); |
68936329 | 787 | #endif |
68936329 JB |
788 | } |
789 | ||
790 | ||
791 | /* Set the parameters of the tty on FD according to the contents of | |
653d4f43 PE |
792 | *SETTINGS. If FLUSHP, discard input. |
793 | Return 0 if all went well, and -1 (setting errno) if anything failed. */ | |
394049ec | 794 | |
653d4f43 PE |
795 | static int |
796 | emacs_set_tty (int fd, struct emacs_tty *settings, bool flushp) | |
68936329 JB |
797 | { |
798 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 799 | #ifndef DOS_NT |
e6cc3307 | 800 | int i; |
68936329 JB |
801 | /* We have those nifty POSIX tcmumbleattr functions. |
802 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 803 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
804 | able to perform any of the requested actions, even if some |
805 | of the requested actions could not be performed. | |
806 | We must read settings back to ensure tty setup properly. | |
807 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 808 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 809 | for (i = 0 ; i < 10 ; i++) |
394049ec | 810 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
811 | { |
812 | if (errno == EINTR) | |
813 | continue; | |
814 | else | |
815 | return -1; | |
816 | } | |
817 | else | |
818 | { | |
819 | struct termios new; | |
820 | ||
72af86bd | 821 | memset (&new, 0, sizeof (new)); |
68936329 JB |
822 | /* Get the current settings, and see if they're what we asked for. */ |
823 | tcgetattr (fd, &new); | |
e6cc3307 RS |
824 | /* We cannot use memcmp on the whole structure here because under |
825 | * aix386 the termios structure has some reserved field that may | |
826 | * not be filled in. | |
827 | */ | |
828 | if ( new.c_iflag == settings->main.c_iflag | |
829 | && new.c_oflag == settings->main.c_oflag | |
830 | && new.c_cflag == settings->main.c_cflag | |
831 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 832 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 833 | break; |
e6cc3307 RS |
834 | else |
835 | continue; | |
68936329 | 836 | } |
68936329 | 837 | #endif |
177c0ea7 | 838 | |
68936329 JB |
839 | /* We have survived the tempest. */ |
840 | return 0; | |
841 | } | |
842 | ||
843 | \f | |
86a5659e JB |
844 | |
845 | #ifdef F_SETOWN | |
1fa53021 | 846 | static int old_fcntl_owner[MAXDESC]; |
86a5659e JB |
847 | #endif /* F_SETOWN */ |
848 | ||
86a5659e JB |
849 | /* This may also be defined in stdio, |
850 | but if so, this does no harm, | |
851 | and using the same name avoids wasting the other one's space. */ | |
852 | ||
9d9a7716 | 853 | #if defined (USG) |
86a5659e JB |
854 | unsigned char _sobuf[BUFSIZ+8]; |
855 | #else | |
856 | char _sobuf[BUFSIZ]; | |
857 | #endif | |
177c0ea7 | 858 | |
da8e1115 KL |
859 | /* Initialize the terminal mode on all tty devices that are currently |
860 | open. */ | |
861 | ||
08633194 | 862 | void |
28d440ab KL |
863 | init_all_sys_modes (void) |
864 | { | |
28d7d09f | 865 | struct tty_display_info *tty; |
16c290d8 | 866 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 867 | init_sys_modes (tty); |
28d440ab KL |
868 | } |
869 | ||
da8e1115 KL |
870 | /* Initialize the terminal mode on the given tty device. */ |
871 | ||
28d440ab | 872 | void |
971de7fb | 873 | init_sys_modes (struct tty_display_info *tty_out) |
86a5659e | 874 | { |
91bac16a | 875 | struct emacs_tty tty; |
e112cc37 | 876 | Lisp_Object terminal; |
91bac16a | 877 | |
4ec5cb58 RS |
878 | Vtty_erase_char = Qnil; |
879 | ||
86a5659e JB |
880 | if (noninteractive) |
881 | return; | |
882 | ||
0b0d3e0b KL |
883 | if (!tty_out->output) |
884 | return; /* The tty is suspended. */ | |
cf84bb53 | 885 | |
322aea6d PE |
886 | narrow_foreground_group (fileno (tty_out->input)); |
887 | ||
2246281f | 888 | if (! tty_out->old_tty) |
38182d90 | 889 | tty_out->old_tty = xmalloc (sizeof *tty_out->old_tty); |
cf84bb53 | 890 | |
12e610e8 | 891 | emacs_get_tty (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 892 | |
2246281f | 893 | tty = *tty_out->old_tty; |
86a5659e | 894 | |
a7ebc409 | 895 | #if !defined (DOS_NT) |
2246281f | 896 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 897 | |
2246281f KL |
898 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
899 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
900 | #ifdef INLCR /* I'm just being cautious, |
901 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 902 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 903 | #endif |
86a5659e | 904 | #ifdef ISTRIP |
2246281f | 905 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 906 | #endif |
2246281f KL |
907 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
908 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 909 | #ifdef IEXTEN |
2246281f | 910 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 911 | #endif |
2246281f KL |
912 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
913 | if (tty_out->flow_control) | |
914 | { | |
915 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 916 | #ifdef IXANY |
2246281f | 917 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 918 | #endif /* IXANY */ |
2246281f KL |
919 | } |
920 | else | |
921 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
922 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
923 | on output */ | |
924 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 925 | #ifdef CS8 |
2246281f KL |
926 | if (tty_out->meta_key) |
927 | { | |
928 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
929 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
930 | } | |
86a5659e | 931 | #endif |
e112cc37 ET |
932 | |
933 | XSETTERMINAL(terminal, tty_out->terminal); | |
934 | if (!NILP (Fcontrolling_tty_p (terminal))) | |
2246281f KL |
935 | { |
936 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
937 | /* Set up C-g for both SIGQUIT and SIGINT. | |
938 | We don't know which we will get, but we handle both alike | |
939 | so which one it really gives us does not matter. */ | |
940 | tty.main.c_cc[VQUIT] = quit_char; | |
941 | } | |
942 | else | |
943 | { | |
944 | /* We normally don't get interrupt or quit signals from tty | |
945 | devices other than our controlling terminal; therefore, | |
946 | we must handle C-g as normal input. Unfortunately, this | |
947 | means that the interrupt and quit feature must be | |
948 | disabled on secondary ttys, or we would not even see the | |
949 | keypress. | |
cf84bb53 | 950 | |
2246281f KL |
951 | Note that even though emacsclient could have special code |
952 | to pass SIGINT to Emacs, we should _not_ enable | |
953 | interrupt/quit keys for emacsclient frames. This means | |
954 | that we can't break out of loops in C code from a | |
955 | secondary tty frame, but we can always decide what | |
956 | display the C-g came from, which is more important from a | |
957 | usability point of view. (Consider the case when two | |
958 | people work together using the same Emacs instance.) */ | |
959 | tty.main.c_cc[VINTR] = CDISABLE; | |
960 | tty.main.c_cc[VQUIT] = CDISABLE; | |
961 | } | |
962 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
963 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 964 | #ifdef VSWTCH |
2246281f | 965 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 966 | of C-z */ |
86a5659e | 967 | #endif /* VSWTCH */ |
cf84bb53 | 968 | |
86a5659e | 969 | #ifdef VSUSP |
a7ebc409 | 970 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */ |
86a5659e JB |
971 | #endif /* VSUSP */ |
972 | #ifdef V_DSUSP | |
a7ebc409 | 973 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */ |
86a5659e | 974 | #endif /* V_DSUSP */ |
e2b40c23 | 975 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 976 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 977 | #endif /* VDSUSP */ |
92c995de | 978 | #ifdef VLNEXT |
2246281f | 979 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
980 | #endif /* VLNEXT */ |
981 | #ifdef VREPRINT | |
2246281f | 982 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
983 | #endif /* VREPRINT */ |
984 | #ifdef VWERASE | |
2246281f | 985 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
986 | #endif /* VWERASE */ |
987 | #ifdef VDISCARD | |
2246281f | 988 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 989 | #endif /* VDISCARD */ |
c179a6d1 | 990 | |
2246281f KL |
991 | if (tty_out->flow_control) |
992 | { | |
421dd92f | 993 | #ifdef VSTART |
2246281f | 994 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
995 | #endif /* VSTART */ |
996 | #ifdef VSTOP | |
2246281f | 997 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 998 | #endif /* VSTOP */ |
2246281f KL |
999 | } |
1000 | else | |
1001 | { | |
c179a6d1 | 1002 | #ifdef VSTART |
2246281f | 1003 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
1004 | #endif /* VSTART */ |
1005 | #ifdef VSTOP | |
2246281f | 1006 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 1007 | #endif /* VSTOP */ |
2246281f | 1008 | } |
c179a6d1 | 1009 | |
86a5659e | 1010 | #ifdef AIX |
f5272227 KL |
1011 | tty.main.c_cc[VSTRT] = CDISABLE; |
1012 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1013 | tty.main.c_cc[VSUSP] = CDISABLE; | |
1014 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
2246281f KL |
1015 | if (tty_out->flow_control) |
1016 | { | |
ac567c95 | 1017 | #ifdef VSTART |
2246281f | 1018 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
1019 | #endif /* VSTART */ |
1020 | #ifdef VSTOP | |
2246281f | 1021 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 1022 | #endif /* VSTOP */ |
2246281f KL |
1023 | } |
1024 | /* Also, PTY overloads NUL and BREAK. | |
1025 | don't ignore break, but don't signal either, so it looks like NUL. | |
1026 | This really serves a purpose only if running in an XTERM window | |
1027 | or via TELNET or the like, but does no harm elsewhere. */ | |
1028 | tty.main.c_iflag &= ~IGNBRK; | |
1029 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e | 1030 | #endif |
fe03522b | 1031 | #endif /* not DOS_NT */ |
cf84bb53 | 1032 | |
207bdbdb | 1033 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
1034 | if (!tty_out->term_initted) |
1035 | internal_terminal_init (); | |
4e389d32 | 1036 | dos_ttraw (tty_out); |
207bdbdb | 1037 | #endif |
91bac16a | 1038 | |
12e610e8 | 1039 | emacs_set_tty (fileno (tty_out->input), &tty, 0); |
86a5659e | 1040 | |
2246281f KL |
1041 | /* This code added to insure that, if flow-control is not to be used, |
1042 | we have an unlocked terminal at the start. */ | |
91bac16a | 1043 | |
86a5659e | 1044 | #ifdef TCXONC |
0b0d3e0b | 1045 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e | 1046 | #endif |
86a5659e | 1047 | #ifdef TIOCSTART |
0b0d3e0b | 1048 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e | 1049 | #endif |
86a5659e | 1050 | |
a7ebc409 | 1051 | #if !defined (DOS_NT) |
51417996 | 1052 | #ifdef TCOON |
0b0d3e0b | 1053 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 1054 | #endif |
51417996 | 1055 | #endif |
d228f207 | 1056 | |
49cdacda | 1057 | #ifdef F_GETOWN |
2246281f | 1058 | if (interrupt_input) |
86a5659e | 1059 | { |
0b0d3e0b KL |
1060 | old_fcntl_owner[fileno (tty_out->input)] = |
1061 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
1062 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
1063 | init_sigio (fileno (tty_out->input)); | |
7e5a23bd | 1064 | #ifdef HAVE_GPM |
75a8734b | 1065 | if (gpm_tty == tty_out) |
3e748bcb | 1066 | { |
75a8734b | 1067 | /* Arrange for mouse events to give us SIGIO signals. */ |
3e748bcb | 1068 | fcntl (gpm_fd, F_SETOWN, getpid ()); |
57669cf1 | 1069 | fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK); |
3e748bcb NR |
1070 | init_sigio (gpm_fd); |
1071 | } | |
7e5a23bd | 1072 | #endif /* HAVE_GPM */ |
86a5659e JB |
1073 | } |
1074 | #endif /* F_GETOWN */ | |
86a5659e | 1075 | |
86a5659e JB |
1076 | #ifdef _IOFBF |
1077 | /* This symbol is defined on recent USG systems. | |
1078 | Someone says without this call USG won't really buffer the file | |
1079 | even with a call to setbuf. */ | |
0b0d3e0b | 1080 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1081 | #else |
0b0d3e0b | 1082 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 1083 | #endif |
4d553a13 | 1084 | |
69fb5031 JR |
1085 | if (tty_out->terminal->set_terminal_modes_hook) |
1086 | tty_out->terminal->set_terminal_modes_hook (tty_out->terminal); | |
4b311aaf | 1087 | |
9628b887 KL |
1088 | if (!tty_out->term_initted) |
1089 | { | |
1090 | Lisp_Object tail, frame; | |
1091 | FOR_EACH_FRAME (tail, frame) | |
1092 | { | |
daf01701 | 1093 | /* XXX This needs to be revised. */ |
9628b887 KL |
1094 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1095 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1096 | init_frame_faces (XFRAME (frame)); | |
1097 | } | |
1098 | } | |
045942b2 | 1099 | |
9628b887 | 1100 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1101 | { |
855a0da7 SM |
1102 | /* We used to call "direct_output_forward_char(0)" here, |
1103 | but it's not clear why, since it may not do anything anyway. */ | |
86a5659e JB |
1104 | } |
1105 | else | |
1106 | { | |
9628b887 | 1107 | Lisp_Object tail, frame; |
0137dbf7 | 1108 | frame_garbaged = 1; |
9628b887 KL |
1109 | FOR_EACH_FRAME (tail, frame) |
1110 | { | |
7ab98847 EZ |
1111 | if ((FRAME_TERMCAP_P (XFRAME (frame)) |
1112 | || FRAME_MSDOS_P (XFRAME (frame))) | |
9628b887 KL |
1113 | && FRAME_TTY (XFRAME (frame)) == tty_out) |
1114 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1115 | } | |
86a5659e | 1116 | } |
91bac16a | 1117 | |
9628b887 | 1118 | tty_out->term_initted = 1; |
86a5659e JB |
1119 | } |
1120 | ||
653d4f43 | 1121 | /* Return true if safe to use tabs in output. |
86a5659e | 1122 | At the time this is called, init_sys_modes has not been done yet. */ |
177c0ea7 | 1123 | |
653d4f43 | 1124 | bool |
16c290d8 | 1125 | tabs_safe_p (int fd) |
86a5659e | 1126 | { |
6548cf00 | 1127 | struct emacs_tty etty; |
91bac16a | 1128 | |
12e610e8 DN |
1129 | emacs_get_tty (fd, &etty); |
1130 | #ifndef DOS_NT | |
1131 | #ifdef TABDLY | |
1132 | return ((etty.main.c_oflag & TABDLY) != TAB3); | |
1133 | #else /* not TABDLY */ | |
1134 | return 1; | |
1135 | #endif /* not TABDLY */ | |
1136 | #else /* DOS_NT */ | |
1137 | return 0; | |
1138 | #endif /* DOS_NT */ | |
86a5659e | 1139 | } |
73d5358f | 1140 | \f |
86a5659e | 1141 | /* Get terminal size from system. |
73d5358f RS |
1142 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1143 | We store 0 if there's no valid information. */ | |
86a5659e | 1144 | |
08633194 | 1145 | void |
16c290d8 | 1146 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1147 | { |
e16e55d4 | 1148 | #if defined TIOCGWINSZ |
91bac16a JB |
1149 | |
1150 | /* BSD-style. */ | |
86a5659e | 1151 | struct winsize size; |
91bac16a | 1152 | |
16c290d8 | 1153 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1154 | *widthp = *heightp = 0; |
1155 | else | |
1156 | { | |
1157 | *widthp = size.ws_col; | |
1158 | *heightp = size.ws_row; | |
1159 | } | |
1160 | ||
e16e55d4 | 1161 | #elif defined TIOCGSIZE |
91bac16a JB |
1162 | |
1163 | /* SunOS - style. */ | |
177c0ea7 | 1164 | struct ttysize size; |
91bac16a | 1165 | |
16c290d8 | 1166 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1167 | *widthp = *heightp = 0; |
1168 | else | |
1169 | { | |
1170 | *widthp = size.ts_cols; | |
1171 | *heightp = size.ts_lines; | |
1172 | } | |
1173 | ||
e16e55d4 JB |
1174 | #elif defined WINDOWSNT |
1175 | ||
1176 | CONSOLE_SCREEN_BUFFER_INFO info; | |
1177 | if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info)) | |
1178 | { | |
1179 | *widthp = info.srWindow.Right - info.srWindow.Left + 1; | |
1180 | *heightp = info.srWindow.Bottom - info.srWindow.Top + 1; | |
1181 | } | |
1182 | else | |
1183 | *widthp = *heightp = 0; | |
1184 | ||
1185 | #elif defined MSDOS | |
1186 | ||
207bdbdb RS |
1187 | *widthp = ScreenCols (); |
1188 | *heightp = ScreenRows (); | |
e16e55d4 | 1189 | |
86a5659e | 1190 | #else /* system doesn't know size */ |
e16e55d4 | 1191 | |
86a5659e JB |
1192 | *widthp = 0; |
1193 | *heightp = 0; | |
e16e55d4 | 1194 | |
207bdbdb | 1195 | #endif |
86a5659e | 1196 | } |
91bac16a | 1197 | |
73d5358f RS |
1198 | /* Set the logical window size associated with descriptor FD |
1199 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1200 | ||
1201 | int | |
971de7fb | 1202 | set_window_size (int fd, int height, int width) |
73d5358f RS |
1203 | { |
1204 | #ifdef TIOCSWINSZ | |
1205 | ||
1206 | /* BSD-style. */ | |
1207 | struct winsize size; | |
1208 | size.ws_row = height; | |
1209 | size.ws_col = width; | |
1210 | ||
1211 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1212 | return 0; /* error */ | |
1213 | else | |
1214 | return 1; | |
1215 | ||
1216 | #else | |
1217 | #ifdef TIOCSSIZE | |
1218 | ||
1219 | /* SunOS - style. */ | |
177c0ea7 | 1220 | struct ttysize size; |
73d5358f RS |
1221 | size.ts_lines = height; |
1222 | size.ts_cols = width; | |
1223 | ||
1224 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1225 | return 0; | |
1226 | else | |
1227 | return 1; | |
1228 | #else | |
1229 | return -1; | |
1230 | #endif /* not SunOS-style */ | |
1231 | #endif /* not BSD-style */ | |
1232 | } | |
1233 | ||
86a5659e | 1234 | \f |
da8e1115 KL |
1235 | |
1236 | /* Prepare all terminal devices for exiting Emacs. */ | |
1237 | ||
28d440ab KL |
1238 | void |
1239 | reset_all_sys_modes (void) | |
1240 | { | |
28d7d09f | 1241 | struct tty_display_info *tty; |
16c290d8 | 1242 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1243 | reset_sys_modes (tty); |
28d440ab KL |
1244 | } |
1245 | ||
0a125897 | 1246 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1247 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1248 | |
08633194 | 1249 | void |
971de7fb | 1250 | reset_sys_modes (struct tty_display_info *tty_out) |
86a5659e JB |
1251 | { |
1252 | if (noninteractive) | |
1253 | { | |
1254 | fflush (stdout); | |
1255 | return; | |
1256 | } | |
9628b887 | 1257 | if (!tty_out->term_initted) |
86a5659e | 1258 | return; |
da8e1115 | 1259 | |
0b0d3e0b KL |
1260 | if (!tty_out->output) |
1261 | return; /* The tty is suspended. */ | |
cf84bb53 | 1262 | |
da8e1115 KL |
1263 | /* Go to and clear the last line of the terminal. */ |
1264 | ||
0a125897 | 1265 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
cf84bb53 | 1266 | |
da8e1115 KL |
1267 | /* Code adapted from tty_clear_end_of_line. */ |
1268 | if (tty_out->TS_clr_line) | |
1269 | { | |
1270 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1271 | } | |
1272 | else | |
1273 | { /* have to do it the hard way */ | |
1274 | int i; | |
ed8dad6b | 1275 | tty_turn_off_insert (tty_out); |
cf84bb53 | 1276 | |
da8e1115 | 1277 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1278 | { |
1279 | fputc (' ', tty_out->output); | |
1280 | } | |
da8e1115 | 1281 | } |
cf84bb53 | 1282 | |
0a125897 | 1283 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 | 1284 | fflush (tty_out->output); |
cf84bb53 | 1285 | |
69fb5031 JR |
1286 | if (tty_out->terminal->reset_terminal_modes_hook) |
1287 | tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal); | |
2f98e6e3 | 1288 | |
86a5659e | 1289 | /* Avoid possible loss of output when changing terminal modes. */ |
47d7532e PE |
1290 | while (fdatasync (fileno (tty_out->output)) != 0 && errno == EINTR) |
1291 | continue; | |
91bac16a | 1292 | |
49cdacda PE |
1293 | #ifndef DOS_NT |
1294 | #ifdef F_SETOWN | |
86a5659e JB |
1295 | if (interrupt_input) |
1296 | { | |
0b0d3e0b KL |
1297 | reset_sigio (fileno (tty_out->input)); |
1298 | fcntl (fileno (tty_out->input), F_SETOWN, | |
1299 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
1300 | } |
1301 | #endif /* F_SETOWN */ | |
0b0d3e0b | 1302 | fcntl (fileno (tty_out->input), F_SETFL, |
49cdacda | 1303 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NONBLOCK); |
a6b00318 | 1304 | #endif |
91bac16a | 1305 | |
fca177d4 | 1306 | if (tty_out->old_tty) |
12e610e8 | 1307 | while (emacs_set_tty (fileno (tty_out->input), |
fca177d4 | 1308 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 1309 | ; |
86a5659e | 1310 | |
207bdbdb RS |
1311 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1312 | dos_ttcooked (); | |
1313 | #endif | |
1314 | ||
322aea6d | 1315 | widen_foreground_group (fileno (tty_out->input)); |
86a5659e JB |
1316 | } |
1317 | \f | |
1318 | #ifdef HAVE_PTYS | |
1319 | ||
1320 | /* Set up the proper status flags for use of a pty. */ | |
1321 | ||
08633194 | 1322 | void |
971de7fb | 1323 | setup_pty (int fd) |
86a5659e JB |
1324 | { |
1325 | /* I'm told that TOICREMOTE does not mean control chars | |
1326 | "can't be sent" but rather that they don't have | |
1327 | input-editing or signaling effects. | |
1328 | That should be good, because we have other ways | |
1329 | to do those things in Emacs. | |
1330 | However, telnet mode seems not to work on 4.2. | |
1331 | So TIOCREMOTE is turned off now. */ | |
1332 | ||
1333 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1334 | will hang. In particular, the "timeout" feature (which | |
1335 | causes a read to return if there is no data available) | |
1336 | does this. Also it is known that telnet mode will hang | |
1337 | in such a way that Emacs must be stopped (perhaps this | |
1338 | is the same problem). | |
177c0ea7 | 1339 | |
86a5659e JB |
1340 | If TIOCREMOTE is turned off, then there is a bug in |
1341 | hp-ux which sometimes loses data. Apparently the | |
1342 | code which blocks the master process when the internal | |
1343 | buffer fills up does not work. Other than this, | |
1344 | though, everything else seems to work fine. | |
177c0ea7 | 1345 | |
86a5659e JB |
1346 | Since the latter lossage is more benign, we may as well |
1347 | lose that way. -- cph */ | |
1348 | #ifdef FIONBIO | |
5e617bc2 | 1349 | #if defined (UNIX98_PTYS) |
86a5659e JB |
1350 | { |
1351 | int on = 1; | |
1352 | ioctl (fd, FIONBIO, &on); | |
1353 | } | |
1354 | #endif | |
1355 | #endif | |
86a5659e JB |
1356 | } |
1357 | #endif /* HAVE_PTYS */ | |
1358 | \f | |
f8a80313 RS |
1359 | #ifdef HAVE_SOCKETS |
1360 | #include <sys/socket.h> | |
1361 | #include <netdb.h> | |
1362 | #endif /* HAVE_SOCKETS */ | |
f8a80313 | 1363 | |
8581cd64 KH |
1364 | #ifdef TRY_AGAIN |
1365 | #ifndef HAVE_H_ERRNO | |
1366 | extern int h_errno; | |
1367 | #endif | |
1368 | #endif /* TRY_AGAIN */ | |
1369 | ||
c0c86835 | 1370 | void |
971de7fb | 1371 | init_system_name (void) |
86a5659e | 1372 | { |
210b2b4f | 1373 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
1374 | struct utsname uts; |
1375 | uname (&uts); | |
1376 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 1377 | #else /* HAVE_GETHOSTNAME */ |
653d4f43 PE |
1378 | char *hostname_alloc = NULL; |
1379 | char hostname_buf[256]; | |
1380 | ptrdiff_t hostname_size = sizeof hostname_buf; | |
1381 | char *hostname = hostname_buf; | |
c0c86835 KH |
1382 | |
1383 | /* Try to get the host name; if the buffer is too short, try | |
1384 | again. Apparently, the only indication gethostname gives of | |
1385 | whether the buffer was large enough is the presence or absence | |
1386 | of a '\0' in the string. Eech. */ | |
1387 | for (;;) | |
1388 | { | |
1389 | gethostname (hostname, hostname_size - 1); | |
1390 | hostname[hostname_size - 1] = '\0'; | |
1391 | ||
1392 | /* Was the buffer large enough for the '\0'? */ | |
1393 | if (strlen (hostname) < hostname_size - 1) | |
1394 | break; | |
1395 | ||
653d4f43 PE |
1396 | hostname = hostname_alloc = xpalloc (hostname_alloc, &hostname_size, 1, |
1397 | min (PTRDIFF_MAX, SIZE_MAX), 1); | |
c0c86835 | 1398 | } |
67004ffb | 1399 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
1400 | /* Turn the hostname into the official, fully-qualified hostname. |
1401 | Don't do this if we're going to dump; this can confuse system | |
1402 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 1403 | #ifndef CANNOT_DUMP |
c0c86835 | 1404 | if (initialized) |
67004ffb | 1405 | #endif /* not CANNOT_DUMP */ |
8966b757 | 1406 | if (! strchr (hostname, '.')) |
960d894c | 1407 | { |
960d894c | 1408 | int count; |
3d66b985 JD |
1409 | #ifdef HAVE_GETADDRINFO |
1410 | struct addrinfo *res; | |
1411 | struct addrinfo hints; | |
1412 | int ret; | |
1413 | ||
cf84bb53 | 1414 | memset (&hints, 0, sizeof (hints)); |
3d66b985 JD |
1415 | hints.ai_socktype = SOCK_STREAM; |
1416 | hints.ai_flags = AI_CANONNAME; | |
1417 | ||
960d894c KH |
1418 | for (count = 0;; count++) |
1419 | { | |
3d66b985 JD |
1420 | if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0 |
1421 | || ret != EAI_AGAIN) | |
1422 | break; | |
1423 | ||
1424 | if (count >= 5) | |
1425 | break; | |
1426 | Fsleep_for (make_number (1), Qnil); | |
1427 | } | |
1428 | ||
1429 | if (ret == 0) | |
1430 | { | |
1431 | struct addrinfo *it = res; | |
1432 | while (it) | |
1433 | { | |
1434 | char *fqdn = it->ai_canonname; | |
8966b757 | 1435 | if (fqdn && strchr (fqdn, '.') |
3d66b985 JD |
1436 | && strcmp (fqdn, "localhost.localdomain") != 0) |
1437 | break; | |
1438 | it = it->ai_next; | |
1439 | } | |
1440 | if (it) | |
1441 | { | |
653d4f43 PE |
1442 | ptrdiff_t len = strlen (it->ai_canonname); |
1443 | if (hostname_size <= len) | |
1444 | { | |
1445 | hostname_size = len + 1; | |
1446 | hostname = hostname_alloc = xrealloc (hostname_alloc, | |
1447 | hostname_size); | |
1448 | } | |
3d66b985 JD |
1449 | strcpy (hostname, it->ai_canonname); |
1450 | } | |
1451 | freeaddrinfo (res); | |
1452 | } | |
1453 | #else /* !HAVE_GETADDRINFO */ | |
1454 | struct hostent *hp; | |
1455 | for (count = 0;; count++) | |
1456 | { | |
1457 | ||
e24f1d55 | 1458 | #ifdef TRY_AGAIN |
960d894c | 1459 | h_errno = 0; |
e24f1d55 | 1460 | #endif |
960d894c | 1461 | hp = gethostbyname (hostname); |
efa04277 | 1462 | #ifdef TRY_AGAIN |
960d894c KH |
1463 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
1464 | #endif | |
3d66b985 | 1465 | |
960d894c | 1466 | break; |
3d66b985 | 1467 | |
960d894c KH |
1468 | if (count >= 5) |
1469 | break; | |
1470 | Fsleep_for (make_number (1), Qnil); | |
1471 | } | |
3d66b985 | 1472 | |
960d894c KH |
1473 | if (hp) |
1474 | { | |
1475 | char *fqdn = (char *) hp->h_name; | |
960d894c | 1476 | |
8966b757 | 1477 | if (!strchr (fqdn, '.')) |
960d894c KH |
1478 | { |
1479 | /* We still don't have a fully qualified domain name. | |
1480 | Try to find one in the list of alternate names */ | |
1481 | char **alias = hp->h_aliases; | |
923721f4 | 1482 | while (*alias |
8966b757 | 1483 | && (!strchr (*alias, '.') |
923721f4 | 1484 | || !strcmp (*alias, "localhost.localdomain"))) |
960d894c KH |
1485 | alias++; |
1486 | if (*alias) | |
1487 | fqdn = *alias; | |
1488 | } | |
1489 | hostname = fqdn; | |
960d894c | 1490 | } |
3d66b985 | 1491 | #endif /* !HAVE_GETADDRINFO */ |
960d894c | 1492 | } |
67004ffb | 1493 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 1494 | Vsystem_name = build_string (hostname); |
653d4f43 | 1495 | xfree (hostname_alloc); |
67004ffb | 1496 | #endif /* HAVE_GETHOSTNAME */ |
c0c86835 | 1497 | { |
653d4f43 PE |
1498 | char *p; |
1499 | for (p = SSDATA (Vsystem_name); *p; p++) | |
c0c86835 KH |
1500 | if (*p == ' ' || *p == '\t') |
1501 | *p = '-'; | |
1502 | } | |
67004ffb | 1503 | } |
86a5659e | 1504 | \f |
1fa53021 | 1505 | sigset_t empty_mask; |
86a5659e | 1506 | |
4d7e6e51 PE |
1507 | static struct sigaction process_fatal_action; |
1508 | ||
1509 | static int | |
1510 | emacs_sigaction_flags (void) | |
86a5659e | 1511 | { |
4d7e6e51 | 1512 | #ifdef SA_RESTART |
0caaedb1 PE |
1513 | /* SA_RESTART causes interruptible functions with timeouts (e.g., |
1514 | 'select') to reset their timeout on some platforms (e.g., | |
1515 | HP-UX 11), which is not what we want. Also, when Emacs is | |
1516 | interactive, we don't want SA_RESTART because we need to poll | |
275464e7 | 1517 | for pending input so we need long-running syscalls to be interrupted |
4d7e6e51 PE |
1518 | after a signal that sets pending_signals. |
1519 | ||
1520 | Non-interactive keyboard input goes through stdio, where we | |
1521 | always want restartable system calls. */ | |
ef874e3d | 1522 | if (noninteractive) |
4d7e6e51 | 1523 | return SA_RESTART; |
e065a56e | 1524 | #endif |
4d7e6e51 PE |
1525 | return 0; |
1526 | } | |
1527 | ||
1528 | /* Store into *ACTION a signal action suitable for Emacs, with handler | |
1529 | HANDLER. */ | |
1530 | void | |
1531 | emacs_sigaction_init (struct sigaction *action, signal_handler_t handler) | |
1532 | { | |
1533 | sigemptyset (&action->sa_mask); | |
1534 | ||
1535 | /* When handling a signal, block nonfatal system signals that are caught | |
1536 | by Emacs. This makes race conditions less likely. */ | |
1537 | sigaddset (&action->sa_mask, SIGALRM); | |
4d7e6e51 | 1538 | sigaddset (&action->sa_mask, SIGCHLD); |
4d7e6e51 PE |
1539 | #ifdef SIGDANGER |
1540 | sigaddset (&action->sa_mask, SIGDANGER); | |
1541 | #endif | |
d89460ed PE |
1542 | #ifdef PROFILER_CPU_SUPPORT |
1543 | sigaddset (&action->sa_mask, SIGPROF); | |
1544 | #endif | |
4d7e6e51 PE |
1545 | #ifdef SIGWINCH |
1546 | sigaddset (&action->sa_mask, SIGWINCH); | |
1547 | #endif | |
1548 | if (! noninteractive) | |
1549 | { | |
1550 | sigaddset (&action->sa_mask, SIGINT); | |
1551 | sigaddset (&action->sa_mask, SIGQUIT); | |
1552 | #ifdef USABLE_SIGIO | |
1553 | sigaddset (&action->sa_mask, SIGIO); | |
1554 | #endif | |
1555 | } | |
1556 | ||
1557 | if (! IEEE_FLOATING_POINT) | |
1558 | sigaddset (&action->sa_mask, SIGFPE); | |
1559 | ||
1560 | action->sa_handler = handler; | |
1561 | action->sa_flags = emacs_sigaction_flags (); | |
86a5659e JB |
1562 | } |
1563 | ||
20ef56db | 1564 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
0caaedb1 | 1565 | static pthread_t main_thread; |
20ef56db PE |
1566 | #endif |
1567 | ||
4d7e6e51 PE |
1568 | /* SIG has arrived at the current process. Deliver it to the main |
1569 | thread, which should handle it with HANDLER. | |
1570 | ||
1571 | If we are on the main thread, handle the signal SIG with HANDLER. | |
20ef56db PE |
1572 | Otherwise, redirect the signal to the main thread, blocking it from |
1573 | this thread. POSIX says any thread can receive a signal that is | |
1574 | associated with a process, process group, or asynchronous event. | |
1575 | On GNU/Linux that is not true, but for other systems (FreeBSD at | |
1576 | least) it is. */ | |
1577 | void | |
4d7e6e51 | 1578 | deliver_process_signal (int sig, signal_handler_t handler) |
20ef56db PE |
1579 | { |
1580 | /* Preserve errno, to avoid race conditions with signal handlers that | |
1581 | might change errno. Races can occur even in single-threaded hosts. */ | |
1582 | int old_errno = errno; | |
1583 | ||
1584 | bool on_main_thread = true; | |
1585 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1586 | if (! pthread_equal (pthread_self (), main_thread)) | |
1587 | { | |
1588 | sigset_t blocked; | |
1589 | sigemptyset (&blocked); | |
1590 | sigaddset (&blocked, sig); | |
1591 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
1592 | pthread_kill (main_thread, sig); | |
1593 | on_main_thread = false; | |
1594 | } | |
1595 | #endif | |
1596 | if (on_main_thread) | |
1597 | handler (sig); | |
1598 | ||
1599 | errno = old_errno; | |
1600 | } | |
4d7e6e51 PE |
1601 | |
1602 | /* Static location to save a fatal backtrace in a thread. | |
1603 | FIXME: If two subsidiary threads fail simultaneously, the resulting | |
1604 | backtrace may be garbage. */ | |
1605 | enum { BACKTRACE_LIMIT_MAX = 500 }; | |
1606 | static void *thread_backtrace_buffer[BACKTRACE_LIMIT_MAX + 1]; | |
1607 | static int thread_backtrace_npointers; | |
1608 | ||
1609 | /* SIG has arrived at the current thread. | |
1610 | If we are on the main thread, handle the signal SIG with HANDLER. | |
1611 | Otherwise, this is a fatal error in the handling thread. */ | |
1612 | static void | |
1613 | deliver_thread_signal (int sig, signal_handler_t handler) | |
1614 | { | |
1615 | int old_errno = errno; | |
1616 | ||
1617 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1618 | if (! pthread_equal (pthread_self (), main_thread)) | |
1619 | { | |
1620 | thread_backtrace_npointers | |
1621 | = backtrace (thread_backtrace_buffer, BACKTRACE_LIMIT_MAX); | |
1622 | sigaction (sig, &process_fatal_action, 0); | |
1623 | pthread_kill (main_thread, sig); | |
1624 | ||
1625 | /* Avoid further damage while the main thread is exiting. */ | |
1626 | while (1) | |
1627 | sigsuspend (&empty_mask); | |
1628 | } | |
1629 | #endif | |
1630 | ||
1631 | handler (sig); | |
1632 | errno = old_errno; | |
1633 | } | |
86a5659e | 1634 | \f |
aa1ba90e PE |
1635 | #if !HAVE_DECL_SYS_SIGLIST |
1636 | # undef sys_siglist | |
c622b48f PE |
1637 | # ifdef _sys_siglist |
1638 | # define sys_siglist _sys_siglist | |
9bd36682 | 1639 | # elif HAVE_DECL___SYS_SIGLIST |
57f8c490 | 1640 | # define sys_siglist __sys_siglist |
c622b48f PE |
1641 | # else |
1642 | # define sys_siglist my_sys_siglist | |
aa1ba90e | 1643 | static char const *sys_siglist[NSIG]; |
c622b48f PE |
1644 | # endif |
1645 | #endif | |
1646 | ||
1647 | #ifdef _sys_nsig | |
1648 | # define sys_siglist_entries _sys_nsig | |
1649 | #else | |
1650 | # define sys_siglist_entries NSIG | |
ca9c0567 PE |
1651 | #endif |
1652 | ||
4d7e6e51 PE |
1653 | /* Handle bus errors, invalid instruction, etc. */ |
1654 | static void | |
1655 | handle_fatal_signal (int sig) | |
1656 | { | |
9d4dcdc9 | 1657 | terminate_due_to_signal (sig, 40); |
4d7e6e51 PE |
1658 | } |
1659 | ||
1660 | static void | |
1661 | deliver_fatal_signal (int sig) | |
1662 | { | |
1663 | deliver_process_signal (sig, handle_fatal_signal); | |
1664 | } | |
1665 | ||
1666 | static void | |
1667 | deliver_fatal_thread_signal (int sig) | |
1668 | { | |
1669 | deliver_thread_signal (sig, handle_fatal_signal); | |
1670 | } | |
1671 | ||
1672 | static _Noreturn void | |
1673 | handle_arith_signal (int sig) | |
1674 | { | |
1675 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
1676 | xsignal0 (Qarith_error); | |
1677 | } | |
1678 | ||
1679 | static void | |
1680 | deliver_arith_signal (int sig) | |
1681 | { | |
1682 | deliver_thread_signal (sig, handle_arith_signal); | |
1683 | } | |
1684 | ||
b6f960a0 PE |
1685 | #ifdef SIGDANGER |
1686 | ||
1687 | /* Handler for SIGDANGER. */ | |
1688 | static void | |
1689 | handle_danger_signal (int sig) | |
1690 | { | |
1691 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
1692 | ||
1693 | /* It might be unsafe to call do_auto_save now. */ | |
1694 | force_auto_save_soon (); | |
1695 | } | |
1696 | ||
1697 | static void | |
1698 | deliver_danger_signal (int sig) | |
1699 | { | |
1700 | deliver_process_signal (sig, handle_danger_signal); | |
1701 | } | |
1702 | #endif | |
1703 | ||
4d7e6e51 PE |
1704 | /* Treat SIG as a terminating signal, unless it is already ignored and |
1705 | we are in --batch mode. Among other things, this makes nohup work. */ | |
1706 | static void | |
1707 | maybe_fatal_sig (int sig) | |
1708 | { | |
1709 | bool catch_sig = !noninteractive; | |
1710 | if (!catch_sig) | |
1711 | { | |
1712 | struct sigaction old_action; | |
1713 | sigaction (sig, 0, &old_action); | |
1714 | catch_sig = old_action.sa_handler != SIG_IGN; | |
1715 | } | |
1716 | if (catch_sig) | |
1717 | sigaction (sig, &process_fatal_action, 0); | |
1718 | } | |
1719 | ||
ca9c0567 | 1720 | void |
4d7e6e51 | 1721 | init_signals (bool dumping) |
ca9c0567 | 1722 | { |
4d7e6e51 PE |
1723 | struct sigaction thread_fatal_action; |
1724 | struct sigaction action; | |
1725 | ||
ca9c0567 | 1726 | sigemptyset (&empty_mask); |
ca9c0567 | 1727 | |
20ef56db PE |
1728 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
1729 | main_thread = pthread_self (); | |
1730 | #endif | |
1731 | ||
c622b48f | 1732 | #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist |
ca9c0567 PE |
1733 | if (! initialized) |
1734 | { | |
ca9c0567 | 1735 | sys_siglist[SIGABRT] = "Aborted"; |
ca9c0567 PE |
1736 | # ifdef SIGAIO |
1737 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
1738 | # endif | |
ca9c0567 | 1739 | sys_siglist[SIGALRM] = "Alarm clock"; |
ca9c0567 PE |
1740 | # ifdef SIGBUS |
1741 | sys_siglist[SIGBUS] = "Bus error"; | |
1742 | # endif | |
ca9c0567 | 1743 | sys_siglist[SIGCHLD] = "Child status changed"; |
ca9c0567 PE |
1744 | # ifdef SIGCONT |
1745 | sys_siglist[SIGCONT] = "Continued"; | |
1746 | # endif | |
1747 | # ifdef SIGDANGER | |
1748 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
1749 | # endif | |
1750 | # ifdef SIGDGNOTIFY | |
1751 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
1752 | # endif | |
1753 | # ifdef SIGEMT | |
1754 | sys_siglist[SIGEMT] = "Emulation trap"; | |
1755 | # endif | |
ca9c0567 | 1756 | sys_siglist[SIGFPE] = "Arithmetic exception"; |
ca9c0567 PE |
1757 | # ifdef SIGFREEZE |
1758 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
1759 | # endif | |
1760 | # ifdef SIGGRANT | |
1761 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
1762 | # endif | |
ca9c0567 | 1763 | sys_siglist[SIGHUP] = "Hangup"; |
ca9c0567 | 1764 | sys_siglist[SIGILL] = "Illegal instruction"; |
ca9c0567 | 1765 | sys_siglist[SIGINT] = "Interrupt"; |
ca9c0567 PE |
1766 | # ifdef SIGIO |
1767 | sys_siglist[SIGIO] = "I/O possible"; | |
1768 | # endif | |
1769 | # ifdef SIGIOINT | |
1770 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
1771 | # endif | |
1772 | # ifdef SIGIOT | |
1773 | sys_siglist[SIGIOT] = "IOT trap"; | |
1774 | # endif | |
ca9c0567 | 1775 | sys_siglist[SIGKILL] = "Killed"; |
ca9c0567 PE |
1776 | # ifdef SIGLOST |
1777 | sys_siglist[SIGLOST] = "Resource lost"; | |
1778 | # endif | |
1779 | # ifdef SIGLWP | |
1780 | sys_siglist[SIGLWP] = "SIGLWP"; | |
1781 | # endif | |
1782 | # ifdef SIGMSG | |
1783 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
1784 | # endif | |
1785 | # ifdef SIGPHONE | |
1786 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
1787 | # endif | |
ca9c0567 | 1788 | sys_siglist[SIGPIPE] = "Broken pipe"; |
ca9c0567 PE |
1789 | # ifdef SIGPOLL |
1790 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
1791 | # endif | |
1792 | # ifdef SIGPROF | |
1793 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
1794 | # endif | |
1795 | # ifdef SIGPTY | |
1796 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
1797 | # endif | |
1798 | # ifdef SIGPWR | |
1799 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
1800 | # endif | |
ca9c0567 | 1801 | sys_siglist[SIGQUIT] = "Quit"; |
ca9c0567 | 1802 | # ifdef SIGRETRACT |
40ba43b4 | 1803 | sys_siglist[SIGRETRACT] = "Need to relinquish monitor mode"; |
ca9c0567 PE |
1804 | # endif |
1805 | # ifdef SIGSAK | |
1806 | sys_siglist[SIGSAK] = "Secure attention"; | |
1807 | # endif | |
ca9c0567 | 1808 | sys_siglist[SIGSEGV] = "Segmentation violation"; |
ca9c0567 PE |
1809 | # ifdef SIGSOUND |
1810 | sys_siglist[SIGSOUND] = "Sound completed"; | |
1811 | # endif | |
1812 | # ifdef SIGSTOP | |
1813 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
1814 | # endif | |
1815 | # ifdef SIGSTP | |
1816 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
1817 | # endif | |
1818 | # ifdef SIGSYS | |
1819 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
1820 | # endif | |
ca9c0567 | 1821 | sys_siglist[SIGTERM] = "Terminated"; |
ca9c0567 PE |
1822 | # ifdef SIGTHAW |
1823 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
1824 | # endif | |
1825 | # ifdef SIGTRAP | |
1826 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
1827 | # endif | |
1828 | # ifdef SIGTSTP | |
1829 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
1830 | # endif | |
1831 | # ifdef SIGTTIN | |
1832 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
1833 | # endif | |
1834 | # ifdef SIGTTOU | |
1835 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
1836 | # endif | |
1837 | # ifdef SIGURG | |
1838 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
1839 | # endif | |
1840 | # ifdef SIGUSR1 | |
1841 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
1842 | # endif | |
1843 | # ifdef SIGUSR2 | |
1844 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
1845 | # endif | |
1846 | # ifdef SIGVTALRM | |
1847 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
1848 | # endif | |
1849 | # ifdef SIGWAITING | |
1850 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
1851 | # endif | |
1852 | # ifdef SIGWINCH | |
1853 | sys_siglist[SIGWINCH] = "Window size changed"; | |
1854 | # endif | |
1855 | # ifdef SIGWIND | |
1856 | sys_siglist[SIGWIND] = "SIGWIND"; | |
1857 | # endif | |
1858 | # ifdef SIGXCPU | |
1859 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
1860 | # endif | |
1861 | # ifdef SIGXFSZ | |
1862 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
1863 | # endif | |
1864 | } | |
c622b48f | 1865 | #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */ |
4d7e6e51 PE |
1866 | |
1867 | /* Don't alter signal handlers if dumping. On some machines, | |
1868 | changing signal handlers sets static data that would make signals | |
1869 | fail to work right when the dumped Emacs is run. */ | |
1870 | if (dumping) | |
1871 | return; | |
1872 | ||
1873 | sigfillset (&process_fatal_action.sa_mask); | |
1874 | process_fatal_action.sa_handler = deliver_fatal_signal; | |
62a1d661 | 1875 | process_fatal_action.sa_flags = emacs_sigaction_flags (); |
4d7e6e51 PE |
1876 | |
1877 | sigfillset (&thread_fatal_action.sa_mask); | |
1878 | thread_fatal_action.sa_handler = deliver_fatal_thread_signal; | |
1879 | thread_fatal_action.sa_flags = process_fatal_action.sa_flags; | |
1880 | ||
1881 | /* SIGINT may need special treatment on MS-Windows. See | |
1882 | http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html | |
1883 | Please update the doc of kill-emacs, kill-emacs-hook, and | |
1884 | NEWS if you change this. */ | |
1885 | ||
1886 | maybe_fatal_sig (SIGHUP); | |
1887 | maybe_fatal_sig (SIGINT); | |
1888 | maybe_fatal_sig (SIGTERM); | |
1889 | ||
1890 | /* Emacs checks for write errors, so it can safely ignore SIGPIPE. | |
1891 | However, in batch mode leave SIGPIPE alone, as that causes Emacs | |
1892 | to behave more like typical batch applications do. */ | |
1893 | if (! noninteractive) | |
1894 | signal (SIGPIPE, SIG_IGN); | |
1895 | ||
1896 | sigaction (SIGQUIT, &process_fatal_action, 0); | |
1897 | sigaction (SIGILL, &thread_fatal_action, 0); | |
1898 | sigaction (SIGTRAP, &thread_fatal_action, 0); | |
1899 | ||
1900 | /* Typically SIGFPE is thread-specific and is fatal, like SIGILL. | |
1901 | But on a non-IEEE host SIGFPE can come from a trap in the Lisp | |
1902 | interpreter's floating point operations, so treat SIGFPE as an | |
1903 | arith-error if it arises in the main thread. */ | |
1904 | if (IEEE_FLOATING_POINT) | |
1905 | sigaction (SIGFPE, &thread_fatal_action, 0); | |
1906 | else | |
1907 | { | |
1908 | emacs_sigaction_init (&action, deliver_arith_signal); | |
1909 | sigaction (SIGFPE, &action, 0); | |
1910 | } | |
1911 | ||
1912 | #ifdef SIGUSR1 | |
1913 | add_user_signal (SIGUSR1, "sigusr1"); | |
1914 | #endif | |
1915 | #ifdef SIGUSR2 | |
1916 | add_user_signal (SIGUSR2, "sigusr2"); | |
1917 | #endif | |
1918 | sigaction (SIGABRT, &thread_fatal_action, 0); | |
1919 | #ifdef SIGPRE | |
1920 | sigaction (SIGPRE, &thread_fatal_action, 0); | |
1921 | #endif | |
1922 | #ifdef SIGORE | |
1923 | sigaction (SIGORE, &thread_fatal_action, 0); | |
1924 | #endif | |
1925 | #ifdef SIGUME | |
1926 | sigaction (SIGUME, &thread_fatal_action, 0); | |
1927 | #endif | |
1928 | #ifdef SIGDLK | |
1929 | sigaction (SIGDLK, &process_fatal_action, 0); | |
1930 | #endif | |
1931 | #ifdef SIGCPULIM | |
1932 | sigaction (SIGCPULIM, &process_fatal_action, 0); | |
1933 | #endif | |
1934 | #ifdef SIGIOT | |
1935 | sigaction (SIGIOT, &thread_fatal_action, 0); | |
1936 | #endif | |
1937 | #ifdef SIGEMT | |
1938 | sigaction (SIGEMT, &thread_fatal_action, 0); | |
1939 | #endif | |
1940 | #ifdef SIGBUS | |
1941 | sigaction (SIGBUS, &thread_fatal_action, 0); | |
1942 | #endif | |
1943 | sigaction (SIGSEGV, &thread_fatal_action, 0); | |
1944 | #ifdef SIGSYS | |
1945 | sigaction (SIGSYS, &thread_fatal_action, 0); | |
1946 | #endif | |
1947 | sigaction (SIGTERM, &process_fatal_action, 0); | |
1948 | #ifdef SIGPROF | |
d89460ed | 1949 | signal (SIGPROF, SIG_IGN); |
4d7e6e51 PE |
1950 | #endif |
1951 | #ifdef SIGVTALRM | |
1952 | sigaction (SIGVTALRM, &process_fatal_action, 0); | |
1953 | #endif | |
1954 | #ifdef SIGXCPU | |
1955 | sigaction (SIGXCPU, &process_fatal_action, 0); | |
1956 | #endif | |
1957 | #ifdef SIGXFSZ | |
1958 | sigaction (SIGXFSZ, &process_fatal_action, 0); | |
1959 | #endif | |
1960 | ||
1961 | #ifdef SIGDANGER | |
1962 | /* This just means available memory is getting low. */ | |
1963 | emacs_sigaction_init (&action, deliver_danger_signal); | |
1964 | sigaction (SIGDANGER, &action, 0); | |
1965 | #endif | |
1966 | ||
1967 | /* AIX-specific signals. */ | |
1968 | #ifdef SIGGRANT | |
1969 | sigaction (SIGGRANT, &process_fatal_action, 0); | |
1970 | #endif | |
1971 | #ifdef SIGMIGRATE | |
1972 | sigaction (SIGMIGRATE, &process_fatal_action, 0); | |
1973 | #endif | |
1974 | #ifdef SIGMSG | |
1975 | sigaction (SIGMSG, &process_fatal_action, 0); | |
1976 | #endif | |
1977 | #ifdef SIGRETRACT | |
1978 | sigaction (SIGRETRACT, &process_fatal_action, 0); | |
1979 | #endif | |
1980 | #ifdef SIGSAK | |
1981 | sigaction (SIGSAK, &process_fatal_action, 0); | |
1982 | #endif | |
1983 | #ifdef SIGSOUND | |
1984 | sigaction (SIGSOUND, &process_fatal_action, 0); | |
1985 | #endif | |
1986 | #ifdef SIGTALRM | |
1987 | sigaction (SIGTALRM, &thread_fatal_action, 0); | |
1988 | #endif | |
ca9c0567 PE |
1989 | } |
1990 | \f | |
9927a7b1 | 1991 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
1992 | #ifdef random |
1993 | #define HAVE_RANDOM | |
1994 | #endif | |
1995 | #endif | |
1996 | ||
1997 | /* Figure out how many bits the system's random number generator uses. | |
1998 | `random' and `lrand48' are assumed to return 31 usable bits. | |
1999 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
2000 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
2001 | ||
2002 | #ifndef RAND_BITS | |
2003 | # ifdef HAVE_RANDOM | |
2004 | # define RAND_BITS 31 | |
2005 | # else /* !HAVE_RANDOM */ | |
2006 | # ifdef HAVE_LRAND48 | |
2007 | # define RAND_BITS 31 | |
2008 | # define random lrand48 | |
2009 | # else /* !HAVE_LRAND48 */ | |
2010 | # define RAND_BITS 15 | |
2011 | # if RAND_MAX == 32767 | |
2012 | # define random rand | |
2013 | # else /* RAND_MAX != 32767 */ | |
2014 | # if RAND_MAX == 2147483647 | |
2015 | # define random() (rand () >> 16) | |
2016 | # else /* RAND_MAX != 2147483647 */ | |
2017 | # ifdef USG | |
2018 | # define random rand | |
2019 | # else | |
2020 | # define random() (rand () >> 16) | |
2a633456 | 2021 | # endif /* !USG */ |
4bb8c8b7 KH |
2022 | # endif /* RAND_MAX != 2147483647 */ |
2023 | # endif /* RAND_MAX != 32767 */ | |
2024 | # endif /* !HAVE_LRAND48 */ | |
2025 | # endif /* !HAVE_RANDOM */ | |
2026 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2027 | |
4bb8c8b7 | 2028 | void |
0e23ef9d | 2029 | seed_random (void *seed, ptrdiff_t seed_size) |
86a5659e | 2030 | { |
33634217 | 2031 | #if defined HAVE_RANDOM || ! defined HAVE_LRAND48 |
0e23ef9d PE |
2032 | unsigned int arg = 0; |
2033 | #else | |
2034 | long int arg = 0; | |
2035 | #endif | |
2036 | unsigned char *argp = (unsigned char *) &arg; | |
2037 | unsigned char *seedp = seed; | |
2038 | ptrdiff_t i; | |
2039 | for (i = 0; i < seed_size; i++) | |
2040 | argp[i % sizeof arg] ^= seedp[i]; | |
4bb8c8b7 | 2041 | #ifdef HAVE_RANDOM |
0e23ef9d | 2042 | srandom (arg); |
f8b53a82 | 2043 | #else |
4bb8c8b7 | 2044 | # ifdef HAVE_LRAND48 |
76425a49 | 2045 | srand48 (arg); |
4bb8c8b7 | 2046 | # else |
0e23ef9d | 2047 | srand (arg); |
4bb8c8b7 | 2048 | # endif |
2e46c7c6 | 2049 | #endif |
86a5659e JB |
2050 | } |
2051 | ||
0e23ef9d PE |
2052 | void |
2053 | init_random (void) | |
2054 | { | |
2055 | EMACS_TIME t = current_emacs_time (); | |
2056 | uintmax_t v = getpid () ^ EMACS_SECS (t) ^ EMACS_NSECS (t); | |
2057 | seed_random (&v, sizeof v); | |
2058 | } | |
2059 | ||
4bb8c8b7 | 2060 | /* |
d8ed26bd PE |
2061 | * Return a nonnegative random integer out of whatever we've got. |
2062 | * It contains enough bits to make a random (signed) Emacs fixnum. | |
4bb8c8b7 KH |
2063 | * This suffices even for a 64-bit architecture with a 15-bit rand. |
2064 | */ | |
ede49d71 | 2065 | EMACS_INT |
971de7fb | 2066 | get_random (void) |
4bb8c8b7 | 2067 | { |
ede49d71 PE |
2068 | EMACS_UINT val = 0; |
2069 | int i; | |
d8ed26bd PE |
2070 | for (i = 0; i < (FIXNUM_BITS + RAND_BITS - 1) / RAND_BITS; i++) |
2071 | val = (random () ^ (val << RAND_BITS) | |
2072 | ^ (val >> (BITS_PER_EMACS_INT - RAND_BITS))); | |
2073 | val ^= val >> (BITS_PER_EMACS_INT - FIXNUM_BITS); | |
2074 | return val & INTMASK; | |
4bb8c8b7 | 2075 | } |
7088d1ca | 2076 | |
55e5faa1 PE |
2077 | #ifndef HAVE_SNPRINTF |
2078 | /* Approximate snprintf as best we can on ancient hosts that lack it. */ | |
2079 | int | |
2080 | snprintf (char *buf, size_t bufsize, char const *format, ...) | |
2081 | { | |
2082 | ptrdiff_t size = min (bufsize, PTRDIFF_MAX); | |
2083 | ptrdiff_t nbytes = size - 1; | |
2084 | va_list ap; | |
2085 | ||
2086 | if (size) | |
2087 | { | |
2088 | va_start (ap, format); | |
2089 | nbytes = doprnt (buf, size, format, 0, ap); | |
2090 | va_end (ap); | |
2091 | } | |
2092 | ||
2093 | if (nbytes == size - 1) | |
2094 | { | |
2095 | /* Calculate the length of the string that would have been created | |
2096 | had the buffer been large enough. */ | |
2097 | char stackbuf[4000]; | |
2098 | char *b = stackbuf; | |
2099 | ptrdiff_t bsize = sizeof stackbuf; | |
2100 | va_start (ap, format); | |
2101 | nbytes = evxprintf (&b, &bsize, stackbuf, -1, format, ap); | |
2102 | va_end (ap); | |
2103 | if (b != stackbuf) | |
2104 | xfree (b); | |
2105 | } | |
2106 | ||
2107 | if (INT_MAX < nbytes) | |
2108 | { | |
31bed486 | 2109 | #ifdef EOVERFLOW |
55e5faa1 | 2110 | errno = EOVERFLOW; |
31bed486 EZ |
2111 | #else |
2112 | errno = EDOM; | |
2113 | #endif | |
55e5faa1 PE |
2114 | return -1; |
2115 | } | |
2116 | return nbytes; | |
2117 | } | |
2118 | #endif | |
86a5659e | 2119 | \f |
cf29dd84 PE |
2120 | /* If a backtrace is available, output the top lines of it to stderr. |
2121 | Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines. | |
2122 | This function may be called from a signal handler, so it should | |
2123 | not invoke async-unsafe functions like malloc. */ | |
2124 | void | |
2125 | emacs_backtrace (int backtrace_limit) | |
2126 | { | |
4d7e6e51 | 2127 | void *main_backtrace_buffer[BACKTRACE_LIMIT_MAX + 1]; |
cf29dd84 | 2128 | int bounded_limit = min (backtrace_limit, BACKTRACE_LIMIT_MAX); |
4d7e6e51 PE |
2129 | void *buffer; |
2130 | int npointers; | |
2131 | ||
2132 | if (thread_backtrace_npointers) | |
2133 | { | |
2134 | buffer = thread_backtrace_buffer; | |
2135 | npointers = thread_backtrace_npointers; | |
2136 | } | |
2137 | else | |
2138 | { | |
2139 | buffer = main_backtrace_buffer; | |
2140 | npointers = backtrace (buffer, bounded_limit + 1); | |
2141 | } | |
2142 | ||
cf29dd84 | 2143 | if (npointers) |
4d7e6e51 | 2144 | { |
4ebbdd67 | 2145 | emacs_write (STDERR_FILENO, "\nBacktrace:\n", 12); |
4d7e6e51 PE |
2146 | backtrace_symbols_fd (buffer, npointers, STDERR_FILENO); |
2147 | if (bounded_limit < npointers) | |
4ebbdd67 | 2148 | emacs_write (STDERR_FILENO, "...\n", 4); |
4d7e6e51 | 2149 | } |
cf29dd84 PE |
2150 | } |
2151 | \f | |
1088b922 | 2152 | #ifndef HAVE_NTGUI |
1088b922 PE |
2153 | void |
2154 | emacs_abort (void) | |
2155 | { | |
17fdfc15 | 2156 | terminate_due_to_signal (SIGABRT, 40); |
1088b922 PE |
2157 | } |
2158 | #endif | |
2159 | ||
406af475 | 2160 | /* Open FILE for Emacs use, using open flags OFLAG and mode MODE. |
067428c1 PE |
2161 | Arrange for subprograms to not inherit the file descriptor. |
2162 | Prefer a method that is multithread-safe, if available. | |
406af475 PE |
2163 | Do not fail merely because the open was interrupted by a signal. |
2164 | Allow the user to quit. */ | |
2165 | ||
86a5659e | 2166 | int |
406af475 | 2167 | emacs_open (const char *file, int oflags, int mode) |
86a5659e | 2168 | { |
406af475 | 2169 | int fd; |
067428c1 | 2170 | oflags |= O_CLOEXEC; |
406af475 PE |
2171 | while ((fd = open (file, oflags, mode)) < 0 && errno == EINTR) |
2172 | QUIT; | |
067428c1 PE |
2173 | if (! O_CLOEXEC && 0 <= fd) |
2174 | fcntl (fd, F_SETFD, FD_CLOEXEC); | |
406af475 PE |
2175 | return fd; |
2176 | } | |
68c45bf0 | 2177 | |
406af475 PE |
2178 | /* Open FILE as a stream for Emacs use, with mode MODE. |
2179 | Act like emacs_open with respect to threads, signals, and quits. */ | |
2180 | ||
2181 | FILE * | |
2182 | emacs_fopen (char const *file, char const *mode) | |
2183 | { | |
067428c1 PE |
2184 | int fd, omode, oflags; |
2185 | int bflag = 0; | |
2186 | char const *m = mode; | |
2187 | ||
2188 | switch (*m++) | |
2189 | { | |
2190 | case 'r': omode = O_RDONLY; oflags = 0; break; | |
2191 | case 'w': omode = O_WRONLY; oflags = O_CREAT | O_TRUNC; break; | |
2192 | case 'a': omode = O_WRONLY; oflags = O_CREAT | O_APPEND; break; | |
2193 | default: emacs_abort (); | |
2194 | } | |
2195 | ||
2196 | while (*m) | |
2197 | switch (*m++) | |
2198 | { | |
2199 | case '+': omode = O_RDWR; break; | |
2200 | case 'b': bflag = O_BINARY; break; | |
2201 | case 't': bflag = O_TEXT; break; | |
2202 | default: /* Ignore. */ break; | |
2203 | } | |
2204 | ||
2205 | fd = emacs_open (file, omode | oflags | bflag, 0666); | |
2206 | return fd < 0 ? 0 : fdopen (fd, mode); | |
86a5659e JB |
2207 | } |
2208 | ||
c7ddc792 PE |
2209 | /* Create a pipe for Emacs use. */ |
2210 | ||
2211 | int | |
2212 | emacs_pipe (int fd[2]) | |
2213 | { | |
2214 | int result = pipe2 (fd, O_CLOEXEC); | |
2215 | if (! O_CLOEXEC && result == 0) | |
2216 | { | |
2217 | fcntl (fd[0], F_SETFD, FD_CLOEXEC); | |
2218 | fcntl (fd[1], F_SETFD, FD_CLOEXEC); | |
2219 | } | |
2220 | return result; | |
2221 | } | |
2222 | ||
bacba3c2 PE |
2223 | /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs. |
2224 | For the background behind this mess, please see Austin Group defect 529 | |
2225 | <http://austingroupbugs.net/view.php?id=529>. */ | |
2226 | ||
2227 | #ifndef POSIX_CLOSE_RESTART | |
2228 | # define POSIX_CLOSE_RESTART 1 | |
2229 | static int | |
2230 | posix_close (int fd, int flag) | |
86a5659e | 2231 | { |
bacba3c2 PE |
2232 | /* Only the POSIX_CLOSE_RESTART case is emulated. */ |
2233 | eassert (flag == POSIX_CLOSE_RESTART); | |
2234 | ||
2235 | /* Things are tricky if close (fd) returns -1 with errno == EINTR | |
2236 | on a system that does not define POSIX_CLOSE_RESTART. | |
2237 | ||
2238 | In this case, in some systems (e.g., GNU/Linux, AIX) FD is | |
2239 | closed, and retrying the close could inadvertently close a file | |
2240 | descriptor allocated by some other thread. In other systems | |
2241 | (e.g., HP/UX) FD is not closed. And in still other systems | |
2242 | (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a | |
2243 | multithreaded program there can be no way to tell. | |
2244 | ||
2245 | So, in this case, pretend that the close succeeded. This works | |
2246 | well on systems like GNU/Linux that close FD. Although it may | |
2247 | leak a file descriptor on other systems, the leak is unlikely and | |
2248 | it's better to leak than to close a random victim. */ | |
2249 | return close (fd) == 0 || errno == EINTR ? 0 : -1; | |
2250 | } | |
2251 | #endif | |
86a5659e | 2252 | |
bacba3c2 PE |
2253 | /* Close FD, retrying if interrupted. If successful, return 0; |
2254 | otherwise, return -1 and set errno to a non-EINTR value. Consider | |
2255 | an EINPROGRESS error to be successful, as that's merely a signal | |
2256 | arriving. FD is always closed when this function returns, even | |
2257 | when it returns -1. | |
fe111daf | 2258 | |
7e649856 PE |
2259 | Do not call this function if FD is nonnegative and might already be closed, |
2260 | as that might close an innocent victim opened by some other thread. */ | |
fe111daf | 2261 | |
bacba3c2 PE |
2262 | int |
2263 | emacs_close (int fd) | |
2264 | { | |
2265 | while (1) | |
2266 | { | |
2267 | int r = posix_close (fd, POSIX_CLOSE_RESTART); | |
2268 | if (r == 0) | |
2269 | return r; | |
2270 | if (!POSIX_CLOSE_RESTART || errno != EINTR) | |
2271 | { | |
7e649856 | 2272 | eassert (errno != EBADF || fd < 0); |
bacba3c2 PE |
2273 | return errno == EINPROGRESS ? 0 : r; |
2274 | } | |
2275 | } | |
86a5659e JB |
2276 | } |
2277 | ||
1963a2e0 PE |
2278 | /* Maximum number of bytes to read or write in a single system call. |
2279 | This works around a serious bug in Linux kernels before 2.6.16; see | |
2280 | <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>. | |
2281 | It's likely to work around similar bugs in other operating systems, so do it | |
2282 | on all platforms. Round INT_MAX down to a page size, with the conservative | |
2283 | assumption that page sizes are at most 2**18 bytes (any kernel with a | |
2284 | page size larger than that shouldn't have the bug). */ | |
2285 | #ifndef MAX_RW_COUNT | |
2286 | #define MAX_RW_COUNT (INT_MAX >> 18 << 18) | |
2287 | #endif | |
2288 | ||
273a5f82 PE |
2289 | /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted. |
2290 | Return the number of bytes read, which might be less than NBYTE. | |
2291 | On error, set errno and return -1. */ | |
d311d28c PE |
2292 | ptrdiff_t |
2293 | emacs_read (int fildes, char *buf, ptrdiff_t nbyte) | |
86a5659e | 2294 | { |
8a2cbd72 | 2295 | register ssize_t rtnval; |
177c0ea7 | 2296 | |
71b41406 PE |
2297 | /* There is no need to check against MAX_RW_COUNT, since no caller ever |
2298 | passes a size that large to emacs_read. */ | |
2299 | ||
2300 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
275464e7 SM |
2301 | && (errno == EINTR)) |
2302 | QUIT; | |
86a5659e JB |
2303 | return (rtnval); |
2304 | } | |
2305 | ||
273a5f82 | 2306 | /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted |
4ebbdd67 PE |
2307 | or if a partial write occurs. If interrupted, process pending |
2308 | signals if PROCESS SIGNALS. Return the number of bytes written, setting | |
273a5f82 | 2309 | errno if this is less than NBYTE. */ |
4ebbdd67 PE |
2310 | static ptrdiff_t |
2311 | emacs_full_write (int fildes, char const *buf, ptrdiff_t nbyte, | |
2312 | bool process_signals) | |
86a5659e | 2313 | { |
4ebbdd67 | 2314 | ptrdiff_t bytes_written = 0; |
b95520f5 | 2315 | |
273a5f82 | 2316 | while (nbyte > 0) |
b95520f5 | 2317 | { |
4ebbdd67 | 2318 | ssize_t n = write (fildes, buf, min (nbyte, MAX_RW_COUNT)); |
b95520f5 | 2319 | |
4ebbdd67 | 2320 | if (n < 0) |
b95520f5 BF |
2321 | { |
2322 | if (errno == EINTR) | |
77220eeb | 2323 | { |
77220eeb SM |
2324 | /* I originally used `QUIT' but that might causes files to |
2325 | be truncated if you hit C-g in the middle of it. --Stef */ | |
4ebbdd67 | 2326 | if (process_signals && pending_signals) |
4d7e6e51 | 2327 | process_pending_signals (); |
77220eeb SM |
2328 | continue; |
2329 | } | |
b95520f5 | 2330 | else |
273a5f82 | 2331 | break; |
b95520f5 BF |
2332 | } |
2333 | ||
4ebbdd67 PE |
2334 | buf += n; |
2335 | nbyte -= n; | |
2336 | bytes_written += n; | |
b95520f5 | 2337 | } |
273a5f82 | 2338 | |
4ebbdd67 PE |
2339 | return bytes_written; |
2340 | } | |
2341 | ||
2342 | /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if | |
2343 | interrupted or if a partial write occurs. Return the number of | |
2344 | bytes written, setting errno if this is less than NBYTE. */ | |
2345 | ptrdiff_t | |
2346 | emacs_write (int fildes, char const *buf, ptrdiff_t nbyte) | |
2347 | { | |
2348 | return emacs_full_write (fildes, buf, nbyte, 0); | |
2349 | } | |
2350 | ||
2351 | /* Like emacs_write, but also process pending signals if interrupted. */ | |
2352 | ptrdiff_t | |
2353 | emacs_write_sig (int fildes, char const *buf, ptrdiff_t nbyte) | |
2354 | { | |
2355 | return emacs_full_write (fildes, buf, nbyte, 1); | |
2356 | } | |
2357 | ||
2358 | /* Write a diagnostic to standard error that contains MESSAGE and a | |
2359 | string derived from errno. Preserve errno. Do not buffer stderr. | |
2360 | Do not process pending signals if interrupted. */ | |
2361 | void | |
2362 | emacs_perror (char const *message) | |
2363 | { | |
2364 | int err = errno; | |
2365 | char const *error_string = strerror (err); | |
2366 | char const *command = (initial_argv && initial_argv[0] | |
2367 | ? initial_argv[0] : "emacs"); | |
2368 | /* Write it out all at once, if it's short; this is less likely to | |
2369 | be interleaved with other output. */ | |
2370 | char buf[BUFSIZ]; | |
2371 | int nbytes = snprintf (buf, sizeof buf, "%s: %s: %s\n", | |
2372 | command, message, error_string); | |
2373 | if (0 <= nbytes && nbytes < BUFSIZ) | |
2374 | emacs_write (STDERR_FILENO, buf, nbytes); | |
2375 | else | |
2376 | { | |
2377 | emacs_write (STDERR_FILENO, command, strlen (command)); | |
2378 | emacs_write (STDERR_FILENO, ": ", 2); | |
2379 | emacs_write (STDERR_FILENO, message, strlen (message)); | |
2380 | emacs_write (STDERR_FILENO, ": ", 2); | |
2381 | emacs_write (STDERR_FILENO, error_string, strlen (error_string)); | |
2382 | emacs_write (STDERR_FILENO, "\n", 1); | |
2383 | } | |
2384 | errno = err; | |
86a5659e | 2385 | } |
86a5659e | 2386 | \f |
d35af63c PE |
2387 | /* Return a struct timeval that is roughly equivalent to T. |
2388 | Use the least timeval not less than T. | |
2389 | Return an extremal value if the result would overflow. */ | |
2390 | struct timeval | |
2391 | make_timeval (EMACS_TIME t) | |
2392 | { | |
2393 | struct timeval tv; | |
2394 | tv.tv_sec = t.tv_sec; | |
2395 | tv.tv_usec = t.tv_nsec / 1000; | |
2396 | ||
2397 | if (t.tv_nsec % 1000 != 0) | |
2398 | { | |
2399 | if (tv.tv_usec < 999999) | |
2400 | tv.tv_usec++; | |
2401 | else if (tv.tv_sec < TYPE_MAXIMUM (time_t)) | |
2402 | { | |
2403 | tv.tv_sec++; | |
2404 | tv.tv_usec = 0; | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | return tv; | |
2409 | } | |
2410 | ||
2411 | /* Set the access and modification time stamps of FD (a.k.a. FILE) to be | |
2412 | ATIME and MTIME, respectively. | |
2413 | FD must be either negative -- in which case it is ignored -- | |
2414 | or a file descriptor that is open on FILE. | |
2415 | If FD is nonnegative, then FILE can be NULL. */ | |
53ea491a | 2416 | int |
d35af63c PE |
2417 | set_file_times (int fd, const char *filename, |
2418 | EMACS_TIME atime, EMACS_TIME mtime) | |
2419 | { | |
2420 | struct timespec timespec[2]; | |
2421 | timespec[0] = atime; | |
2422 | timespec[1] = mtime; | |
2423 | return fdutimens (fd, filename, timespec); | |
53ea491a KH |
2424 | } |
2425 | \f | |
aa1ba90e PE |
2426 | /* Like strsignal, except async-signal-safe, and this function typically |
2427 | returns a string in the C locale rather than the current locale. */ | |
2428 | char const * | |
2429 | safe_strsignal (int code) | |
68c45bf0 | 2430 | { |
aa1ba90e | 2431 | char const *signame = 0; |
68c45bf0 | 2432 | |
c622b48f | 2433 | if (0 <= code && code < sys_siglist_entries) |
aa1ba90e PE |
2434 | signame = sys_siglist[code]; |
2435 | if (! signame) | |
2436 | signame = "Unknown signal"; | |
c4ea52a6 | 2437 | |
68c45bf0 PE |
2438 | return signame; |
2439 | } | |
d888760c | 2440 | \f |
a7ebc409 | 2441 | #ifndef DOS_NT |
d888760c | 2442 | /* For make-serial-process */ |
cf84bb53 | 2443 | int |
4e604a5d | 2444 | serial_open (Lisp_Object port) |
d888760c | 2445 | { |
4e604a5d | 2446 | int fd = emacs_open (SSDATA (port), O_RDWR | O_NOCTTY | O_NONBLOCK, 0); |
d888760c | 2447 | if (fd < 0) |
4e604a5d | 2448 | report_file_error ("Opening serial port", port); |
d888760c GM |
2449 | #ifdef TIOCEXCL |
2450 | ioctl (fd, TIOCEXCL, (char *) 0); | |
2451 | #endif | |
2452 | ||
2453 | return fd; | |
2454 | } | |
759d3f32 SM |
2455 | |
2456 | #if !defined (HAVE_CFMAKERAW) | |
2457 | /* Workaround for targets which are missing cfmakeraw. */ | |
2458 | /* Pasted from man page. */ | |
cf84bb53 JB |
2459 | static void |
2460 | cfmakeraw (struct termios *termios_p) | |
759d3f32 SM |
2461 | { |
2462 | termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
2463 | termios_p->c_oflag &= ~OPOST; | |
2464 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
2465 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
2466 | termios_p->c_cflag |= CS8; | |
2467 | } | |
2468 | #endif /* !defined (HAVE_CFMAKERAW */ | |
2469 | ||
2470 | #if !defined (HAVE_CFSETSPEED) | |
2471 | /* Workaround for targets which are missing cfsetspeed. */ | |
cf84bb53 JB |
2472 | static int |
2473 | cfsetspeed (struct termios *termios_p, speed_t vitesse) | |
759d3f32 SM |
2474 | { |
2475 | return (cfsetispeed (termios_p, vitesse) | |
2476 | + cfsetospeed (termios_p, vitesse)); | |
2477 | } | |
2478 | #endif | |
2479 | ||
d888760c GM |
2480 | /* For serial-process-configure */ |
2481 | void | |
2482 | serial_configure (struct Lisp_Process *p, | |
cf84bb53 | 2483 | Lisp_Object contact) |
d888760c GM |
2484 | { |
2485 | Lisp_Object childp2 = Qnil; | |
2486 | Lisp_Object tem = Qnil; | |
2487 | struct termios attr; | |
2488 | int err = -1; | |
2489 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
2490 | ||
4d2b044c | 2491 | childp2 = Fcopy_sequence (p->childp); |
d888760c GM |
2492 | |
2493 | /* Read port attributes and prepare default configuration. */ | |
2494 | err = tcgetattr (p->outfd, &attr); | |
2495 | if (err != 0) | |
4e604a5d | 2496 | report_file_error ("Failed tcgetattr", Qnil); |
d888760c GM |
2497 | cfmakeraw (&attr); |
2498 | #if defined (CLOCAL) | |
2499 | attr.c_cflag |= CLOCAL; | |
2500 | #endif | |
2501 | #if defined (CREAD) | |
6d1921be | 2502 | attr.c_cflag |= CREAD; |
d888760c GM |
2503 | #endif |
2504 | ||
2505 | /* Configure speed. */ | |
2506 | if (!NILP (Fplist_member (contact, QCspeed))) | |
2507 | tem = Fplist_get (contact, QCspeed); | |
2508 | else | |
4d2b044c | 2509 | tem = Fplist_get (p->childp, QCspeed); |
d888760c GM |
2510 | CHECK_NUMBER (tem); |
2511 | err = cfsetspeed (&attr, XINT (tem)); | |
2512 | if (err != 0) | |
4e604a5d | 2513 | report_file_error ("Failed cfsetspeed", tem); |
d888760c GM |
2514 | childp2 = Fplist_put (childp2, QCspeed, tem); |
2515 | ||
2516 | /* Configure bytesize. */ | |
2517 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
2518 | tem = Fplist_get (contact, QCbytesize); | |
2519 | else | |
4d2b044c | 2520 | tem = Fplist_get (p->childp, QCbytesize); |
d888760c GM |
2521 | if (NILP (tem)) |
2522 | tem = make_number (8); | |
2523 | CHECK_NUMBER (tem); | |
2524 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
2525 | error (":bytesize must be nil (8), 7, or 8"); | |
cf84bb53 | 2526 | summary[0] = XINT (tem) + '0'; |
d888760c GM |
2527 | #if defined (CSIZE) && defined (CS7) && defined (CS8) |
2528 | attr.c_cflag &= ~CSIZE; | |
2529 | attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8); | |
2530 | #else | |
16bad4dd | 2531 | /* Don't error on bytesize 8, which should be set by cfmakeraw. */ |
d888760c GM |
2532 | if (XINT (tem) != 8) |
2533 | error ("Bytesize cannot be changed"); | |
2534 | #endif | |
2535 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
2536 | ||
2537 | /* Configure parity. */ | |
2538 | if (!NILP (Fplist_member (contact, QCparity))) | |
2539 | tem = Fplist_get (contact, QCparity); | |
2540 | else | |
4d2b044c | 2541 | tem = Fplist_get (p->childp, QCparity); |
d888760c GM |
2542 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) |
2543 | error (":parity must be nil (no parity), `even', or `odd'"); | |
2544 | #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK) | |
2545 | attr.c_cflag &= ~(PARENB | PARODD); | |
2546 | attr.c_iflag &= ~(IGNPAR | INPCK); | |
2547 | if (NILP (tem)) | |
2548 | { | |
2549 | summary[1] = 'N'; | |
2550 | } | |
2551 | else if (EQ (tem, Qeven)) | |
2552 | { | |
2553 | summary[1] = 'E'; | |
2554 | attr.c_cflag |= PARENB; | |
2555 | attr.c_iflag |= (IGNPAR | INPCK); | |
2556 | } | |
2557 | else if (EQ (tem, Qodd)) | |
2558 | { | |
2559 | summary[1] = 'O'; | |
2560 | attr.c_cflag |= (PARENB | PARODD); | |
2561 | attr.c_iflag |= (IGNPAR | INPCK); | |
2562 | } | |
2563 | #else | |
16bad4dd | 2564 | /* Don't error on no parity, which should be set by cfmakeraw. */ |
d888760c GM |
2565 | if (!NILP (tem)) |
2566 | error ("Parity cannot be configured"); | |
2567 | #endif | |
2568 | childp2 = Fplist_put (childp2, QCparity, tem); | |
2569 | ||
2570 | /* Configure stopbits. */ | |
2571 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
2572 | tem = Fplist_get (contact, QCstopbits); | |
2573 | else | |
4d2b044c | 2574 | tem = Fplist_get (p->childp, QCstopbits); |
d888760c GM |
2575 | if (NILP (tem)) |
2576 | tem = make_number (1); | |
2577 | CHECK_NUMBER (tem); | |
2578 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
2579 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
2580 | summary[2] = XINT (tem) + '0'; | |
2581 | #if defined (CSTOPB) | |
2582 | attr.c_cflag &= ~CSTOPB; | |
2583 | if (XINT (tem) == 2) | |
2584 | attr.c_cflag |= CSTOPB; | |
2585 | #else | |
16bad4dd | 2586 | /* Don't error on 1 stopbit, which should be set by cfmakeraw. */ |
d888760c GM |
2587 | if (XINT (tem) != 1) |
2588 | error ("Stopbits cannot be configured"); | |
2589 | #endif | |
2590 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
2591 | ||
2592 | /* Configure flowcontrol. */ | |
2593 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
2594 | tem = Fplist_get (contact, QCflowcontrol); | |
2595 | else | |
4d2b044c | 2596 | tem = Fplist_get (p->childp, QCflowcontrol); |
d888760c GM |
2597 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) |
2598 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
2599 | #if defined (CRTSCTS) | |
2600 | attr.c_cflag &= ~CRTSCTS; | |
2601 | #endif | |
2602 | #if defined (CNEW_RTSCTS) | |
2603 | attr.c_cflag &= ~CNEW_RTSCTS; | |
2604 | #endif | |
2605 | #if defined (IXON) && defined (IXOFF) | |
2606 | attr.c_iflag &= ~(IXON | IXOFF); | |
2607 | #endif | |
2608 | if (NILP (tem)) | |
2609 | { | |
2610 | /* Already configured. */ | |
2611 | } | |
2612 | else if (EQ (tem, Qhw)) | |
2613 | { | |
2614 | #if defined (CRTSCTS) | |
2615 | attr.c_cflag |= CRTSCTS; | |
2616 | #elif defined (CNEW_RTSCTS) | |
2617 | attr.c_cflag |= CNEW_RTSCTS; | |
2618 | #else | |
2619 | error ("Hardware flowcontrol (RTS/CTS) not supported"); | |
2620 | #endif | |
2621 | } | |
2622 | else if (EQ (tem, Qsw)) | |
2623 | { | |
2624 | #if defined (IXON) && defined (IXOFF) | |
2625 | attr.c_iflag |= (IXON | IXOFF); | |
2626 | #else | |
2627 | error ("Software flowcontrol (XON/XOFF) not supported"); | |
2628 | #endif | |
2629 | } | |
2630 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
2631 | ||
2632 | /* Activate configuration. */ | |
2633 | err = tcsetattr (p->outfd, TCSANOW, &attr); | |
2634 | if (err != 0) | |
4e604a5d | 2635 | report_file_error ("Failed tcsetattr", Qnil); |
d888760c GM |
2636 | |
2637 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6a09a33b | 2638 | pset_childp (p, childp2); |
d888760c | 2639 | } |
a7ebc409 | 2640 | #endif /* not DOS_NT */ |
06e111a6 DN |
2641 | \f |
2642 | /* System depended enumeration of and access to system processes a-la ps(1). */ | |
2643 | ||
2644 | #ifdef HAVE_PROCFS | |
2645 | ||
2646 | /* Process enumeration and access via /proc. */ | |
2647 | ||
2648 | Lisp_Object | |
971de7fb | 2649 | list_system_processes (void) |
06e111a6 DN |
2650 | { |
2651 | Lisp_Object procdir, match, proclist, next; | |
2652 | struct gcpro gcpro1, gcpro2; | |
2653 | register Lisp_Object tail; | |
2654 | ||
2655 | GCPRO2 (procdir, match); | |
2656 | /* For every process on the system, there's a directory in the | |
2657 | "/proc" pseudo-directory whose name is the numeric ID of that | |
2658 | process. */ | |
2659 | procdir = build_string ("/proc"); | |
2660 | match = build_string ("[0-9]+"); | |
86ec63ba | 2661 | proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil); |
06e111a6 DN |
2662 | |
2663 | /* `proclist' gives process IDs as strings. Destructively convert | |
2664 | each string into a number. */ | |
2665 | for (tail = proclist; CONSP (tail); tail = next) | |
2666 | { | |
2667 | next = XCDR (tail); | |
2668 | XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil)); | |
2669 | } | |
2670 | UNGCPRO; | |
2671 | ||
2672 | /* directory_files_internal returns the files in reverse order; undo | |
2673 | that. */ | |
2674 | proclist = Fnreverse (proclist); | |
2675 | return proclist; | |
2676 | } | |
2677 | ||
0845a75c | 2678 | #elif defined DARWIN_OS || defined __FreeBSD__ |
725eb027 | 2679 | |
b91b7e4d | 2680 | Lisp_Object |
5790543d | 2681 | list_system_processes (void) |
b91b7e4d | 2682 | { |
0845a75c | 2683 | #ifdef DARWIN_OS |
f01769f9 LL |
2684 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL}; |
2685 | #else | |
b91b7e4d | 2686 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PROC}; |
f01769f9 | 2687 | #endif |
b91b7e4d EW |
2688 | size_t len; |
2689 | struct kinfo_proc *procs; | |
2690 | size_t i; | |
2691 | ||
2692 | struct gcpro gcpro1; | |
2693 | Lisp_Object proclist = Qnil; | |
2694 | ||
2695 | if (sysctl (mib, 3, NULL, &len, NULL, 0) != 0) | |
2696 | return proclist; | |
5790543d | 2697 | |
b91b7e4d EW |
2698 | procs = xmalloc (len); |
2699 | if (sysctl (mib, 3, procs, &len, NULL, 0) != 0) | |
2700 | { | |
2701 | xfree (procs); | |
2702 | return proclist; | |
2703 | } | |
5790543d | 2704 | |
b91b7e4d EW |
2705 | GCPRO1 (proclist); |
2706 | len /= sizeof (struct kinfo_proc); | |
2707 | for (i = 0; i < len; i++) | |
f01769f9 | 2708 | { |
0845a75c | 2709 | #ifdef DARWIN_OS |
f01769f9 LL |
2710 | proclist = Fcons (make_fixnum_or_float (procs[i].kp_proc.p_pid), proclist); |
2711 | #else | |
2712 | proclist = Fcons (make_fixnum_or_float (procs[i].ki_pid), proclist); | |
2713 | #endif | |
2714 | } | |
b91b7e4d | 2715 | UNGCPRO; |
5790543d | 2716 | |
b91b7e4d EW |
2717 | xfree (procs); |
2718 | ||
2719 | return proclist; | |
2720 | } | |
2721 | ||
f8d23104 DN |
2722 | /* The WINDOWSNT implementation is in w32.c. |
2723 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 2724 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
2725 | |
2726 | Lisp_Object | |
cf84bb53 | 2727 | list_system_processes (void) |
06e111a6 DN |
2728 | { |
2729 | return Qnil; | |
2730 | } | |
91c85b70 EZ |
2731 | |
2732 | #endif /* !defined (WINDOWSNT) */ | |
06e111a6 | 2733 | |
29abe551 | 2734 | #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT |
d35af63c PE |
2735 | static EMACS_TIME |
2736 | time_from_jiffies (unsigned long long tval, long hz) | |
2737 | { | |
2738 | unsigned long long s = tval / hz; | |
2739 | unsigned long long frac = tval % hz; | |
2740 | int ns; | |
d35af63c PE |
2741 | |
2742 | if (TYPE_MAXIMUM (time_t) < s) | |
2743 | time_overflow (); | |
2744 | if (LONG_MAX - 1 <= ULLONG_MAX / EMACS_TIME_RESOLUTION | |
2745 | || frac <= ULLONG_MAX / EMACS_TIME_RESOLUTION) | |
2746 | ns = frac * EMACS_TIME_RESOLUTION / hz; | |
06e111a6 | 2747 | else |
d35af63c PE |
2748 | { |
2749 | /* This is reachable only in the unlikely case that HZ * HZ | |
2750 | exceeds ULLONG_MAX. It calculates an approximation that is | |
2751 | guaranteed to be in range. */ | |
2752 | long hz_per_ns = (hz / EMACS_TIME_RESOLUTION | |
2753 | + (hz % EMACS_TIME_RESOLUTION != 0)); | |
2754 | ns = frac / hz_per_ns; | |
2755 | } | |
2756 | ||
e9a9ae03 | 2757 | return make_emacs_time (s, ns); |
06e111a6 DN |
2758 | } |
2759 | ||
2760 | static Lisp_Object | |
2761 | ltime_from_jiffies (unsigned long long tval, long hz) | |
2762 | { | |
d35af63c PE |
2763 | EMACS_TIME t = time_from_jiffies (tval, hz); |
2764 | return make_lisp_time (t); | |
06e111a6 DN |
2765 | } |
2766 | ||
d35af63c PE |
2767 | static EMACS_TIME |
2768 | get_up_time (void) | |
06e111a6 DN |
2769 | { |
2770 | FILE *fup; | |
e9a9ae03 | 2771 | EMACS_TIME up = make_emacs_time (0, 0); |
06e111a6 | 2772 | |
4d7e6e51 | 2773 | block_input (); |
406af475 | 2774 | fup = emacs_fopen ("/proc/uptime", "r"); |
06e111a6 DN |
2775 | |
2776 | if (fup) | |
2777 | { | |
d35af63c PE |
2778 | unsigned long long upsec, upfrac, idlesec, idlefrac; |
2779 | int upfrac_start, upfrac_end, idlefrac_start, idlefrac_end; | |
06e111a6 | 2780 | |
d35af63c PE |
2781 | if (fscanf (fup, "%llu.%n%llu%n %llu.%n%llu%n", |
2782 | &upsec, &upfrac_start, &upfrac, &upfrac_end, | |
2783 | &idlesec, &idlefrac_start, &idlefrac, &idlefrac_end) | |
2784 | == 4) | |
06e111a6 | 2785 | { |
d35af63c PE |
2786 | if (TYPE_MAXIMUM (time_t) < upsec) |
2787 | { | |
2788 | upsec = TYPE_MAXIMUM (time_t); | |
2789 | upfrac = EMACS_TIME_RESOLUTION - 1; | |
2790 | } | |
2791 | else | |
2792 | { | |
2793 | int upfraclen = upfrac_end - upfrac_start; | |
2794 | for (; upfraclen < LOG10_EMACS_TIME_RESOLUTION; upfraclen++) | |
2795 | upfrac *= 10; | |
2796 | for (; LOG10_EMACS_TIME_RESOLUTION < upfraclen; upfraclen--) | |
2797 | upfrac /= 10; | |
2798 | upfrac = min (upfrac, EMACS_TIME_RESOLUTION - 1); | |
2799 | } | |
e9a9ae03 | 2800 | up = make_emacs_time (upsec, upfrac); |
06e111a6 DN |
2801 | } |
2802 | fclose (fup); | |
2803 | } | |
4d7e6e51 | 2804 | unblock_input (); |
d35af63c PE |
2805 | |
2806 | return up; | |
06e111a6 DN |
2807 | } |
2808 | ||
2809 | #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff) | |
2810 | #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12)) | |
2811 | ||
2812 | static Lisp_Object | |
f4f634e8 | 2813 | procfs_ttyname (int rdev) |
06e111a6 | 2814 | { |
ab9980cd | 2815 | FILE *fdev; |
06e111a6 DN |
2816 | char name[PATH_MAX]; |
2817 | ||
4d7e6e51 | 2818 | block_input (); |
406af475 | 2819 | fdev = emacs_fopen ("/proc/tty/drivers", "r"); |
ab9980cd | 2820 | name[0] = 0; |
06e111a6 DN |
2821 | |
2822 | if (fdev) | |
2823 | { | |
2824 | unsigned major; | |
2825 | unsigned long minor_beg, minor_end; | |
2826 | char minor[25]; /* 2 32-bit numbers + dash */ | |
2827 | char *endp; | |
2828 | ||
ab9980cd | 2829 | for (; !feof (fdev) && !ferror (fdev); name[0] = 0) |
06e111a6 | 2830 | { |
908589fd | 2831 | if (fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor) >= 3 |
06e111a6 DN |
2832 | && major == MAJOR (rdev)) |
2833 | { | |
2834 | minor_beg = strtoul (minor, &endp, 0); | |
2835 | if (*endp == '\0') | |
2836 | minor_end = minor_beg; | |
2837 | else if (*endp == '-') | |
2838 | minor_end = strtoul (endp + 1, &endp, 0); | |
2839 | else | |
2840 | continue; | |
2841 | ||
2842 | if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end) | |
2843 | { | |
10d66ec0 | 2844 | sprintf (name + strlen (name), "%u", MINOR (rdev)); |
06e111a6 DN |
2845 | break; |
2846 | } | |
2847 | } | |
2848 | } | |
2849 | fclose (fdev); | |
2850 | } | |
4d7e6e51 | 2851 | unblock_input (); |
06e111a6 DN |
2852 | return build_string (name); |
2853 | } | |
2854 | ||
2855 | static unsigned long | |
2856 | procfs_get_total_memory (void) | |
2857 | { | |
ab9980cd | 2858 | FILE *fmem; |
06e111a6 DN |
2859 | unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */ |
2860 | ||
4d7e6e51 | 2861 | block_input (); |
406af475 | 2862 | fmem = emacs_fopen ("/proc/meminfo", "r"); |
06e111a6 DN |
2863 | |
2864 | if (fmem) | |
2865 | { | |
2866 | unsigned long entry_value; | |
2867 | char entry_name[20]; /* the longest I saw is 13+1 */ | |
2868 | ||
2869 | while (!feof (fmem) && !ferror (fmem)) | |
2870 | { | |
908589fd | 2871 | if (fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value) >= 2 |
06e111a6 DN |
2872 | && strcmp (entry_name, "MemTotal:") == 0) |
2873 | { | |
2874 | retval = entry_value; | |
2875 | break; | |
2876 | } | |
2877 | } | |
2878 | fclose (fmem); | |
2879 | } | |
4d7e6e51 | 2880 | unblock_input (); |
06e111a6 DN |
2881 | return retval; |
2882 | } | |
2883 | ||
2884 | Lisp_Object | |
f4f634e8 | 2885 | system_process_attributes (Lisp_Object pid) |
06e111a6 DN |
2886 | { |
2887 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
2888 | struct stat st; | |
2889 | struct passwd *pw; | |
2890 | struct group *gr; | |
2891 | long clocks_per_sec; | |
2892 | char *procfn_end; | |
2893 | char procbuf[1025], *p, *q; | |
2894 | int fd; | |
2895 | ssize_t nread; | |
e99a530f PE |
2896 | static char const default_cmd[] = "???"; |
2897 | const char *cmd = default_cmd; | |
2898 | int cmdsize = sizeof default_cmd - 1; | |
06e111a6 | 2899 | char *cmdline = NULL; |
e99a530f | 2900 | ptrdiff_t cmdline_size; |
ab9980cd | 2901 | char c; |
d311d28c PE |
2902 | printmax_t proc_id; |
2903 | int ppid, pgrp, sess, tty, tpgid, thcount; | |
2904 | uid_t uid; | |
2905 | gid_t gid; | |
a70072c9 PE |
2906 | unsigned long long u_time, s_time, cutime, cstime, start; |
2907 | long priority, niceness, rss; | |
06e111a6 | 2908 | unsigned long minflt, majflt, cminflt, cmajflt, vsize; |
d35af63c | 2909 | EMACS_TIME tnow, tstart, tboot, telapsed, us_time; |
06e111a6 DN |
2910 | double pcpu, pmem; |
2911 | Lisp_Object attrs = Qnil; | |
ab9980cd PE |
2912 | Lisp_Object cmd_str, decoded_cmd; |
2913 | ptrdiff_t count; | |
06e111a6 | 2914 | struct gcpro gcpro1, gcpro2; |
06e111a6 DN |
2915 | |
2916 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 2917 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 2918 | sprintf (procfn, "/proc/%"pMd, proc_id); |
06e111a6 DN |
2919 | if (stat (procfn, &st) < 0) |
2920 | return attrs; | |
2921 | ||
2922 | GCPRO2 (attrs, decoded_cmd); | |
2923 | ||
2924 | /* euid egid */ | |
2925 | uid = st.st_uid; | |
d311d28c | 2926 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
4d7e6e51 | 2927 | block_input (); |
06e111a6 | 2928 | pw = getpwuid (uid); |
4d7e6e51 | 2929 | unblock_input (); |
06e111a6 DN |
2930 | if (pw) |
2931 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
2932 | ||
2933 | gid = st.st_gid; | |
d311d28c | 2934 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
4d7e6e51 | 2935 | block_input (); |
06e111a6 | 2936 | gr = getgrgid (gid); |
4d7e6e51 | 2937 | unblock_input (); |
06e111a6 DN |
2938 | if (gr) |
2939 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
2940 | ||
ab9980cd | 2941 | count = SPECPDL_INDEX (); |
06e111a6 DN |
2942 | strcpy (fn, procfn); |
2943 | procfn_end = fn + strlen (fn); | |
2944 | strcpy (procfn_end, "/stat"); | |
2945 | fd = emacs_open (fn, O_RDONLY, 0); | |
ab9980cd PE |
2946 | if (fd < 0) |
2947 | nread = 0; | |
2948 | else | |
2949 | { | |
2950 | record_unwind_protect_int (close_file_unwind, fd); | |
2951 | nread = emacs_read (fd, procbuf, sizeof procbuf - 1); | |
2952 | } | |
2953 | if (0 < nread) | |
06e111a6 DN |
2954 | { |
2955 | procbuf[nread] = '\0'; | |
2956 | p = procbuf; | |
2957 | ||
2958 | p = strchr (p, '('); | |
2959 | if (p != NULL) | |
2960 | { | |
2961 | q = strrchr (p + 1, ')'); | |
2962 | /* comm */ | |
2963 | if (q != NULL) | |
2964 | { | |
2965 | cmd = p + 1; | |
2966 | cmdsize = q - cmd; | |
2967 | } | |
2968 | } | |
2969 | else | |
2970 | q = NULL; | |
06e111a6 DN |
2971 | /* Command name is encoded in locale-coding-system; decode it. */ |
2972 | cmd_str = make_unibyte_string (cmd, cmdsize); | |
2973 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
2974 | Vlocale_coding_system, 0); | |
2975 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
2976 | ||
ab9980cd PE |
2977 | /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt |
2978 | utime stime cutime cstime priority nice thcount . start vsize rss */ | |
2979 | if (q | |
2980 | && (sscanf (q + 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu " | |
2981 | "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"), | |
2982 | &c, &ppid, &pgrp, &sess, &tty, &tpgid, | |
2983 | &minflt, &cminflt, &majflt, &cmajflt, | |
2984 | &u_time, &s_time, &cutime, &cstime, | |
2985 | &priority, &niceness, &thcount, &start, &vsize, &rss) | |
2986 | == 20)) | |
06e111a6 | 2987 | { |
ab9980cd PE |
2988 | char state_str[2]; |
2989 | state_str[0] = c; | |
2990 | state_str[1] = '\0'; | |
2991 | attrs = Fcons (Fcons (Qstate, build_string (state_str)), attrs); | |
2992 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid)), attrs); | |
2993 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp)), attrs); | |
2994 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess)), attrs); | |
06e111a6 | 2995 | attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs); |
ab9980cd | 2996 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid)), attrs); |
06e111a6 DN |
2997 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs); |
2998 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs); | |
ab9980cd PE |
2999 | attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), |
3000 | attrs); | |
3001 | attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), | |
3002 | attrs); | |
06e111a6 DN |
3003 | clocks_per_sec = sysconf (_SC_CLK_TCK); |
3004 | if (clocks_per_sec < 0) | |
3005 | clocks_per_sec = 100; | |
3006 | attrs = Fcons (Fcons (Qutime, | |
a70072c9 | 3007 | ltime_from_jiffies (u_time, clocks_per_sec)), |
06e111a6 DN |
3008 | attrs); |
3009 | attrs = Fcons (Fcons (Qstime, | |
a70072c9 | 3010 | ltime_from_jiffies (s_time, clocks_per_sec)), |
06e111a6 | 3011 | attrs); |
ac1e4171 | 3012 | attrs = Fcons (Fcons (Qtime, |
a70072c9 PE |
3013 | ltime_from_jiffies (s_time + u_time, |
3014 | clocks_per_sec)), | |
ac1e4171 | 3015 | attrs); |
06e111a6 DN |
3016 | attrs = Fcons (Fcons (Qcutime, |
3017 | ltime_from_jiffies (cutime, clocks_per_sec)), | |
3018 | attrs); | |
3019 | attrs = Fcons (Fcons (Qcstime, | |
3020 | ltime_from_jiffies (cstime, clocks_per_sec)), | |
ac1e4171 EZ |
3021 | attrs); |
3022 | attrs = Fcons (Fcons (Qctime, | |
ab9980cd PE |
3023 | ltime_from_jiffies (cstime + cutime, |
3024 | clocks_per_sec)), | |
06e111a6 DN |
3025 | attrs); |
3026 | attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs); | |
a70072c9 | 3027 | attrs = Fcons (Fcons (Qnice, make_number (niceness)), attrs); |
ab9980cd PE |
3028 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount)), |
3029 | attrs); | |
e9a9ae03 | 3030 | tnow = current_emacs_time (); |
d35af63c | 3031 | telapsed = get_up_time (); |
e9a9ae03 | 3032 | tboot = sub_emacs_time (tnow, telapsed); |
d35af63c | 3033 | tstart = time_from_jiffies (start, clocks_per_sec); |
e9a9ae03 | 3034 | tstart = add_emacs_time (tboot, tstart); |
d35af63c | 3035 | attrs = Fcons (Fcons (Qstart, make_lisp_time (tstart)), attrs); |
ab9980cd PE |
3036 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize / 1024)), |
3037 | attrs); | |
3038 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4 * rss)), attrs); | |
e9a9ae03 | 3039 | telapsed = sub_emacs_time (tnow, tstart); |
d35af63c PE |
3040 | attrs = Fcons (Fcons (Qetime, make_lisp_time (telapsed)), attrs); |
3041 | us_time = time_from_jiffies (u_time + s_time, clocks_per_sec); | |
3042 | pcpu = (EMACS_TIME_TO_DOUBLE (us_time) | |
3043 | / EMACS_TIME_TO_DOUBLE (telapsed)); | |
06e111a6 DN |
3044 | if (pcpu > 1.0) |
3045 | pcpu = 1.0; | |
3046 | attrs = Fcons (Fcons (Qpcpu, make_float (100 * pcpu)), attrs); | |
3047 | pmem = 4.0 * 100 * rss / procfs_get_total_memory (); | |
3048 | if (pmem > 100) | |
3049 | pmem = 100; | |
3050 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); | |
3051 | } | |
3052 | } | |
ab9980cd | 3053 | unbind_to (count, Qnil); |
06e111a6 DN |
3054 | |
3055 | /* args */ | |
3056 | strcpy (procfn_end, "/cmdline"); | |
3057 | fd = emacs_open (fn, O_RDONLY, 0); | |
3058 | if (fd >= 0) | |
3059 | { | |
ab9980cd PE |
3060 | ptrdiff_t readsize, nread_incr; |
3061 | record_unwind_protect_int (close_file_unwind, fd); | |
3062 | record_unwind_protect_nothing (); | |
3063 | nread = cmdline_size = 0; | |
3064 | ||
3065 | do | |
06e111a6 | 3066 | { |
ab9980cd PE |
3067 | cmdline = xpalloc (cmdline, &cmdline_size, 2, STRING_BYTES_BOUND, 1); |
3068 | set_unwind_protect_ptr (count + 1, xfree, cmdline); | |
3069 | ||
3070 | /* Leave room even if every byte needs escaping below. */ | |
3071 | readsize = (cmdline_size >> 1) - nread; | |
3072 | ||
3073 | nread_incr = emacs_read (fd, cmdline + nread, readsize); | |
3074 | nread += max (0, nread_incr); | |
06e111a6 | 3075 | } |
ab9980cd PE |
3076 | while (nread_incr == readsize); |
3077 | ||
3078 | if (nread) | |
06e111a6 | 3079 | { |
06e111a6 | 3080 | /* We don't want trailing null characters. */ |
ab9980cd PE |
3081 | for (p = cmdline + nread; cmdline < p && !p[-1]; p--) |
3082 | continue; | |
3083 | ||
3084 | /* Escape-quote whitespace and backslashes. */ | |
3085 | q = cmdline + cmdline_size; | |
3086 | while (cmdline < p) | |
06e111a6 | 3087 | { |
ab9980cd PE |
3088 | char c = *--p; |
3089 | *--q = c ? c : ' '; | |
3090 | if (c_isspace (c) || c == '\\') | |
3091 | *--q = '\\'; | |
06e111a6 | 3092 | } |
ab9980cd PE |
3093 | |
3094 | nread = cmdline + cmdline_size - q; | |
06e111a6 | 3095 | } |
ab9980cd PE |
3096 | |
3097 | if (!nread) | |
06e111a6 | 3098 | { |
ab9980cd PE |
3099 | nread = cmdsize + 2; |
3100 | cmdline_size = nread + 1; | |
3101 | q = cmdline = xrealloc (cmdline, cmdline_size); | |
3102 | set_unwind_protect_ptr (count + 1, xfree, cmdline); | |
e99a530f | 3103 | sprintf (cmdline, "[%.*s]", cmdsize, cmd); |
06e111a6 | 3104 | } |
06e111a6 | 3105 | /* Command line is encoded in locale-coding-system; decode it. */ |
ab9980cd | 3106 | cmd_str = make_unibyte_string (q, nread); |
06e111a6 DN |
3107 | decoded_cmd = code_convert_string_norecord (cmd_str, |
3108 | Vlocale_coding_system, 0); | |
ab9980cd | 3109 | unbind_to (count, Qnil); |
06e111a6 DN |
3110 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); |
3111 | } | |
3112 | ||
3113 | UNGCPRO; | |
3114 | return attrs; | |
3115 | } | |
91c85b70 | 3116 | |
f4f634e8 DN |
3117 | #elif defined (SOLARIS2) && defined (HAVE_PROCFS) |
3118 | ||
3119 | /* The <procfs.h> header does not like to be included if _LP64 is defined and | |
3120 | __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */ | |
3121 | #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) | |
3122 | #define PROCFS_FILE_OFFSET_BITS_HACK 1 | |
3123 | #undef _FILE_OFFSET_BITS | |
3124 | #else | |
3125 | #define PROCFS_FILE_OFFSET_BITS_HACK 0 | |
3126 | #endif | |
3127 | ||
3128 | #include <procfs.h> | |
3129 | ||
3130 | #if PROCFS_FILE_OFFSET_BITS_HACK == 1 | |
3131 | #define _FILE_OFFSET_BITS 64 | |
90efadd1 PE |
3132 | #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */ |
3133 | #endif | |
f4f634e8 DN |
3134 | #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */ |
3135 | ||
3136 | Lisp_Object | |
3137 | system_process_attributes (Lisp_Object pid) | |
3138 | { | |
3139 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
3140 | struct stat st; | |
3141 | struct passwd *pw; | |
3142 | struct group *gr; | |
3143 | char *procfn_end; | |
3144 | struct psinfo pinfo; | |
3145 | int fd; | |
3146 | ssize_t nread; | |
d311d28c PE |
3147 | printmax_t proc_id; |
3148 | uid_t uid; | |
3149 | gid_t gid; | |
f4f634e8 | 3150 | Lisp_Object attrs = Qnil; |
ab9980cd | 3151 | Lisp_Object decoded_cmd; |
f4f634e8 | 3152 | struct gcpro gcpro1, gcpro2; |
ab9980cd | 3153 | ptrdiff_t count; |
f4f634e8 DN |
3154 | |
3155 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 3156 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 3157 | sprintf (procfn, "/proc/%"pMd, proc_id); |
f4f634e8 DN |
3158 | if (stat (procfn, &st) < 0) |
3159 | return attrs; | |
3160 | ||
3161 | GCPRO2 (attrs, decoded_cmd); | |
3162 | ||
3163 | /* euid egid */ | |
3164 | uid = st.st_uid; | |
d311d28c | 3165 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
4d7e6e51 | 3166 | block_input (); |
f4f634e8 | 3167 | pw = getpwuid (uid); |
4d7e6e51 | 3168 | unblock_input (); |
f4f634e8 DN |
3169 | if (pw) |
3170 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3171 | ||
3172 | gid = st.st_gid; | |
d311d28c | 3173 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
4d7e6e51 | 3174 | block_input (); |
f4f634e8 | 3175 | gr = getgrgid (gid); |
4d7e6e51 | 3176 | unblock_input (); |
f4f634e8 DN |
3177 | if (gr) |
3178 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3179 | ||
ab9980cd | 3180 | count = SPECPDL_INDEX (); |
f4f634e8 DN |
3181 | strcpy (fn, procfn); |
3182 | procfn_end = fn + strlen (fn); | |
3183 | strcpy (procfn_end, "/psinfo"); | |
3184 | fd = emacs_open (fn, O_RDONLY, 0); | |
ab9980cd PE |
3185 | if (fd < 0) |
3186 | nread = 0; | |
3187 | else | |
f4f634e8 | 3188 | { |
ab9980cd PE |
3189 | record_unwind_protect (close_file_unwind, fd); |
3190 | nread = emacs_read (fd, &pinfo, sizeof pinfo); | |
f4f634e8 DN |
3191 | } |
3192 | ||
ab9980cd PE |
3193 | if (nread == sizeof pinfo) |
3194 | { | |
3195 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs); | |
3196 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs); | |
3197 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (pinfo.pr_sid)), attrs); | |
3198 | ||
3199 | { | |
3200 | char state_str[2]; | |
3201 | state_str[0] = pinfo.pr_lwp.pr_sname; | |
3202 | state_str[1] = '\0'; | |
3203 | attrs = Fcons (Fcons (Qstate, build_string (state_str)), attrs); | |
3204 | } | |
2d2d05d8 | 3205 | |
ab9980cd PE |
3206 | /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t, |
3207 | need to get a string from it. */ | |
3208 | ||
3209 | /* FIXME: missing: Qtpgid */ | |
3210 | ||
3211 | /* FIXME: missing: | |
3212 | Qminflt | |
3213 | Qmajflt | |
3214 | Qcminflt | |
3215 | Qcmajflt | |
3216 | ||
3217 | Qutime | |
3218 | Qcutime | |
3219 | Qstime | |
3220 | Qcstime | |
3221 | Are they available? */ | |
3222 | ||
3223 | attrs = Fcons (Fcons (Qtime, make_lisp_time (pinfo.pr_time)), attrs); | |
3224 | attrs = Fcons (Fcons (Qctime, make_lisp_time (pinfo.pr_ctime)), attrs); | |
3225 | attrs = Fcons (Fcons (Qpri, make_number (pinfo.pr_lwp.pr_pri)), attrs); | |
3226 | attrs = Fcons (Fcons (Qnice, make_number (pinfo.pr_lwp.pr_nice)), attrs); | |
3227 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pinfo.pr_nlwp)), | |
3228 | attrs); | |
3229 | ||
3230 | attrs = Fcons (Fcons (Qstart, make_lisp_time (pinfo.pr_start)), attrs); | |
3231 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (pinfo.pr_size)), | |
3232 | attrs); | |
3233 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (pinfo.pr_rssize)), | |
3234 | attrs); | |
3235 | ||
3236 | /* pr_pctcpu and pr_pctmem are unsigned integers in the | |
3237 | range 0 .. 2**15, representing 0.0 .. 1.0. */ | |
3238 | attrs = Fcons (Fcons (Qpcpu, | |
3239 | make_float (100.0 / 0x8000 * pinfo.pr_pctcpu)), | |
3240 | attrs); | |
3241 | attrs = Fcons (Fcons (Qpmem, | |
3242 | make_float (100.0 / 0x8000 * pinfo.pr_pctmem)), | |
3243 | attrs); | |
3244 | ||
3245 | decoded_cmd = (code_convert_string_norecord | |
3246 | (make_unibyte_string (pinfo.pr_fname, | |
3247 | strlen (pinfo.pr_fname)), | |
3248 | Vlocale_coding_system, 0)); | |
3249 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
3250 | decoded_cmd = (code_convert_string_norecord | |
3251 | (make_unibyte_string (pinfo.pr_psargs, | |
3252 | strlen (pinfo.pr_psargs)), | |
3253 | Vlocale_coding_system, 0)); | |
3254 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
3255 | } | |
3256 | unbind_to (count, Qnil); | |
f4f634e8 DN |
3257 | UNGCPRO; |
3258 | return attrs; | |
3259 | } | |
06e111a6 | 3260 | |
5790543d | 3261 | #elif defined __FreeBSD__ |
b91b7e4d | 3262 | |
d054f3fb PE |
3263 | static EMACS_TIME |
3264 | timeval_to_EMACS_TIME (struct timeval t) | |
3265 | { | |
e9a9ae03 | 3266 | return make_emacs_time (t.tv_sec, t.tv_usec * 1000); |
d054f3fb PE |
3267 | } |
3268 | ||
3269 | static Lisp_Object | |
db7b8d06 | 3270 | make_lisp_timeval (struct timeval t) |
d054f3fb PE |
3271 | { |
3272 | return make_lisp_time (timeval_to_EMACS_TIME (t)); | |
3273 | } | |
3274 | ||
b91b7e4d EW |
3275 | Lisp_Object |
3276 | system_process_attributes (Lisp_Object pid) | |
3277 | { | |
3278 | int proc_id; | |
5790543d | 3279 | int pagesize = getpagesize (); |
b91b7e4d EW |
3280 | int npages; |
3281 | int fscale; | |
3282 | struct passwd *pw; | |
3283 | struct group *gr; | |
3284 | char *ttyname; | |
3285 | size_t len; | |
3286 | char args[MAXPATHLEN]; | |
3287 | EMACS_TIME t, now; | |
5790543d | 3288 | |
b91b7e4d EW |
3289 | int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID}; |
3290 | struct kinfo_proc proc; | |
5790543d | 3291 | size_t proclen = sizeof proc; |
b91b7e4d EW |
3292 | |
3293 | struct gcpro gcpro1, gcpro2; | |
3294 | Lisp_Object attrs = Qnil; | |
3295 | Lisp_Object decoded_comm; | |
5790543d | 3296 | |
b91b7e4d | 3297 | CHECK_NUMBER_OR_FLOAT (pid); |
af52196c | 3298 | CONS_TO_INTEGER (pid, int, proc_id); |
b91b7e4d | 3299 | mib[3] = proc_id; |
5790543d | 3300 | |
b91b7e4d EW |
3301 | if (sysctl (mib, 4, &proc, &proclen, NULL, 0) != 0) |
3302 | return attrs; | |
3303 | ||
3304 | GCPRO2 (attrs, decoded_comm); | |
5790543d PE |
3305 | |
3306 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (proc.ki_uid)), attrs); | |
3307 | ||
4d7e6e51 | 3308 | block_input (); |
b91b7e4d | 3309 | pw = getpwuid (proc.ki_uid); |
4d7e6e51 | 3310 | unblock_input (); |
b91b7e4d EW |
3311 | if (pw) |
3312 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3313 | ||
5790543d | 3314 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (proc.ki_svgid)), attrs); |
b91b7e4d | 3315 | |
4d7e6e51 | 3316 | block_input (); |
b91b7e4d | 3317 | gr = getgrgid (proc.ki_svgid); |
4d7e6e51 | 3318 | unblock_input (); |
b91b7e4d EW |
3319 | if (gr) |
3320 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3321 | ||
3322 | decoded_comm = code_convert_string_norecord | |
3323 | (make_unibyte_string (proc.ki_comm, strlen (proc.ki_comm)), | |
3324 | Vlocale_coding_system, 0); | |
5790543d | 3325 | |
b91b7e4d EW |
3326 | attrs = Fcons (Fcons (Qcomm, decoded_comm), attrs); |
3327 | { | |
3328 | char state[2] = {'\0', '\0'}; | |
3329 | switch (proc.ki_stat) | |
3330 | { | |
3331 | case SRUN: | |
3332 | state[0] = 'R'; | |
3333 | break; | |
3334 | ||
3335 | case SSLEEP: | |
3336 | state[0] = 'S'; | |
3337 | break; | |
5790543d | 3338 | |
b91b7e4d EW |
3339 | case SLOCK: |
3340 | state[0] = 'D'; | |
3341 | break; | |
3342 | ||
3343 | case SZOMB: | |
3344 | state[0] = 'Z'; | |
3345 | break; | |
5790543d | 3346 | |
b91b7e4d EW |
3347 | case SSTOP: |
3348 | state[0] = 'T'; | |
3349 | break; | |
3350 | } | |
3351 | attrs = Fcons (Fcons (Qstate, build_string (state)), attrs); | |
3352 | } | |
5790543d | 3353 | |
b91b7e4d EW |
3354 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (proc.ki_ppid)), attrs); |
3355 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (proc.ki_pgid)), attrs); | |
3356 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (proc.ki_sid)), attrs); | |
3357 | ||
4d7e6e51 | 3358 | block_input (); |
b91b7e4d | 3359 | ttyname = proc.ki_tdev == NODEV ? NULL : devname (proc.ki_tdev, S_IFCHR); |
4d7e6e51 | 3360 | unblock_input (); |
b91b7e4d EW |
3361 | if (ttyname) |
3362 | attrs = Fcons (Fcons (Qtty, build_string (ttyname)), attrs); | |
5790543d | 3363 | |
b91b7e4d EW |
3364 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (proc.ki_tpgid)), attrs); |
3365 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (proc.ki_rusage.ru_minflt)), attrs); | |
3366 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (proc.ki_rusage.ru_majflt)), attrs); | |
3367 | attrs = Fcons (Fcons (Qcminflt, make_number (proc.ki_rusage_ch.ru_minflt)), attrs); | |
3368 | attrs = Fcons (Fcons (Qcmajflt, make_number (proc.ki_rusage_ch.ru_majflt)), attrs); | |
3369 | ||
db7b8d06 PE |
3370 | attrs = Fcons (Fcons (Qutime, make_lisp_timeval (proc.ki_rusage.ru_utime)), |
3371 | attrs); | |
3372 | attrs = Fcons (Fcons (Qstime, make_lisp_timeval (proc.ki_rusage.ru_stime)), | |
3373 | attrs); | |
e9a9ae03 PE |
3374 | t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage.ru_utime), |
3375 | timeval_to_EMACS_TIME (proc.ki_rusage.ru_stime)); | |
db7b8d06 | 3376 | attrs = Fcons (Fcons (Qtime, make_lisp_time (t)), attrs); |
b91b7e4d | 3377 | |
db7b8d06 PE |
3378 | attrs = Fcons (Fcons (Qcutime, |
3379 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3380 | attrs); | |
3381 | attrs = Fcons (Fcons (Qcstime, | |
3382 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3383 | attrs); | |
e9a9ae03 PE |
3384 | t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_utime), |
3385 | timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_stime)); | |
db7b8d06 | 3386 | attrs = Fcons (Fcons (Qctime, make_lisp_time (t)), attrs); |
b91b7e4d | 3387 | |
5790543d PE |
3388 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (proc.ki_numthreads)), |
3389 | attrs); | |
b91b7e4d EW |
3390 | attrs = Fcons (Fcons (Qpri, make_number (proc.ki_pri.pri_native)), attrs); |
3391 | attrs = Fcons (Fcons (Qnice, make_number (proc.ki_nice)), attrs); | |
db7b8d06 | 3392 | attrs = Fcons (Fcons (Qstart, make_lisp_timeval (proc.ki_start)), attrs); |
b91b7e4d | 3393 | attrs = Fcons (Fcons (Qvsize, make_number (proc.ki_size >> 10)), attrs); |
5790543d PE |
3394 | attrs = Fcons (Fcons (Qrss, make_number (proc.ki_rssize * pagesize >> 10)), |
3395 | attrs); | |
b91b7e4d | 3396 | |
e9a9ae03 PE |
3397 | now = current_emacs_time (); |
3398 | t = sub_emacs_time (now, timeval_to_EMACS_TIME (proc.ki_start)); | |
db7b8d06 | 3399 | attrs = Fcons (Fcons (Qetime, make_lisp_time (t)), attrs); |
b91b7e4d | 3400 | |
5790543d | 3401 | len = sizeof fscale; |
b91b7e4d EW |
3402 | if (sysctlbyname ("kern.fscale", &fscale, &len, NULL, 0) == 0) |
3403 | { | |
5790543d | 3404 | double pcpu; |
b91b7e4d | 3405 | fixpt_t ccpu; |
5790543d | 3406 | len = sizeof ccpu; |
b91b7e4d EW |
3407 | if (sysctlbyname ("kern.ccpu", &ccpu, &len, NULL, 0) == 0) |
3408 | { | |
5790543d PE |
3409 | pcpu = (100.0 * proc.ki_pctcpu / fscale |
3410 | / (1 - exp (proc.ki_swtime * log ((double) ccpu / fscale)))); | |
3411 | attrs = Fcons (Fcons (Qpcpu, make_fixnum_or_float (pcpu)), attrs); | |
b91b7e4d EW |
3412 | } |
3413 | } | |
3414 | ||
5790543d | 3415 | len = sizeof npages; |
b91b7e4d EW |
3416 | if (sysctlbyname ("hw.availpages", &npages, &len, NULL, 0) == 0) |
3417 | { | |
5790543d PE |
3418 | double pmem = (proc.ki_flag & P_INMEM |
3419 | ? 100.0 * proc.ki_rssize / npages | |
3420 | : 0); | |
3421 | attrs = Fcons (Fcons (Qpmem, make_fixnum_or_float (pmem)), attrs); | |
b91b7e4d EW |
3422 | } |
3423 | ||
3424 | mib[2] = KERN_PROC_ARGS; | |
3425 | len = MAXPATHLEN; | |
3426 | if (sysctl (mib, 4, args, &len, NULL, 0) == 0) | |
3427 | { | |
3428 | int i; | |
3429 | for (i = 0; i < len; i++) | |
3430 | { | |
3431 | if (! args[i] && i < len - 1) | |
3432 | args[i] = ' '; | |
3433 | } | |
3434 | ||
5790543d PE |
3435 | decoded_comm = |
3436 | (code_convert_string_norecord | |
d7ea76b4 | 3437 | (build_unibyte_string (args), |
5790543d | 3438 | Vlocale_coding_system, 0)); |
b91b7e4d EW |
3439 | |
3440 | attrs = Fcons (Fcons (Qargs, decoded_comm), attrs); | |
3441 | } | |
5790543d | 3442 | |
b91b7e4d EW |
3443 | UNGCPRO; |
3444 | return attrs; | |
3445 | } | |
3446 | ||
f8d23104 DN |
3447 | /* The WINDOWSNT implementation is in w32.c. |
3448 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 3449 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
3450 | |
3451 | Lisp_Object | |
3452 | system_process_attributes (Lisp_Object pid) | |
3453 | { | |
9dcbe89b | 3454 | return Qnil; |
06e111a6 DN |
3455 | } |
3456 | ||
3457 | #endif /* !defined (WINDOWSNT) */ |