Commit | Line | Data |
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86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
acaf905b | 2 | Copyright (C) 1985-1988, 1993-1995, 1999-2012 |
8cabe764 | 3 | Free Software Foundation, Inc. |
86a5659e JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
86a5659e | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
86a5659e JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
86a5659e | 19 | |
4838e624 | 20 | #include <config.h> |
f162bcc3 PE |
21 | |
22 | #define SYSTIME_INLINE EXTERN_INLINE | |
23 | ||
cf29dd84 | 24 | #include <execinfo.h> |
86a5659e | 25 | #include <signal.h> |
5890e9f7 | 26 | #include <stdio.h> |
86a5659e | 27 | #include <setjmp.h> |
06e111a6 DN |
28 | #ifdef HAVE_PWD_H |
29 | #include <pwd.h> | |
30 | #include <grp.h> | |
31 | #endif /* HAVE_PWD_H */ | |
06e111a6 | 32 | #include <limits.h> |
d3eb3bfa | 33 | #include <unistd.h> |
53934c98 | 34 | |
d1fdcab7 | 35 | #include <allocator.h> |
620f13b0 | 36 | #include <c-ctype.h> |
d1fdcab7 | 37 | #include <careadlinkat.h> |
67342916 | 38 | #include <ignore-value.h> |
d35af63c | 39 | #include <utimens.h> |
67342916 | 40 | |
86a5659e | 41 | #include "lisp.h" |
819b8f00 | 42 | #include "sysselect.h" |
9ac0d9e0 | 43 | #include "blockinput.h" |
86a5659e | 44 | |
7dca65a4 PE |
45 | #ifdef BSD_SYSTEM |
46 | #include <sys/param.h> | |
b91b7e4d | 47 | #include <sys/sysctl.h> |
7dca65a4 PE |
48 | #endif |
49 | ||
50 | #ifdef __FreeBSD__ | |
b91b7e4d | 51 | #include <sys/user.h> |
d054f3fb | 52 | #include <sys/resource.h> |
b91b7e4d EW |
53 | #include <math.h> |
54 | #endif | |
55 | ||
fe03522b | 56 | #ifdef WINDOWSNT |
e15b6288 JR |
57 | #define read sys_read |
58 | #define write sys_write | |
fe03522b | 59 | #include <windows.h> |
fe03522b RS |
60 | #endif /* not WINDOWSNT */ |
61 | ||
86a5659e JB |
62 | #include <sys/types.h> |
63 | #include <sys/stat.h> | |
64 | #include <errno.h> | |
65 | ||
b05af5d3 PE |
66 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
67 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
68 | #include <sys/systeminfo.h> | |
69 | #endif | |
70 | ||
207bdbdb | 71 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
207bdbdb RS |
72 | #include "msdos.h" |
73 | #include <sys/param.h> | |
15614e61 | 74 | #endif |
207bdbdb | 75 | |
bb4bc8e2 | 76 | #include <sys/file.h> |
bb4bc8e2 | 77 | #include <fcntl.h> |
86a5659e | 78 | |
e04a4e0d | 79 | #include "systty.h" |
94c8642a | 80 | #include "syswait.h" |
86a5659e | 81 | |
a7ebc409 | 82 | #ifdef HAVE_SYS_UTSNAME_H |
86a5659e | 83 | #include <sys/utsname.h> |
86a5659e | 84 | #include <memory.h> |
a7ebc409 | 85 | #endif /* HAVE_SYS_UTSNAME_H */ |
86a5659e | 86 | |
e36ec798 | 87 | #include "keyboard.h" |
0137dbf7 | 88 | #include "frame.h" |
86a5659e JB |
89 | #include "window.h" |
90 | #include "termhooks.h" | |
91 | #include "termchar.h" | |
92 | #include "termopts.h" | |
93 | #include "dispextern.h" | |
94 | #include "process.h" | |
0a125897 | 95 | #include "cm.h" /* for reset_sys_modes */ |
86a5659e | 96 | |
fe03522b RS |
97 | #ifdef WINDOWSNT |
98 | #include <direct.h> | |
99 | /* In process.h which conflicts with the local copy. */ | |
100 | #define _P_WAIT 0 | |
43db14bb JB |
101 | int _cdecl _spawnlp (int, const char *, const char *, ...); |
102 | int _cdecl _getpid (void); | |
b6682dd9 | 103 | extern char *getwd (char *); |
fe03522b RS |
104 | #endif |
105 | ||
91bac16a JB |
106 | #include "syssignal.h" |
107 | #include "systime.h" | |
86a5659e | 108 | |
1fa53021 PE |
109 | static int emacs_get_tty (int, struct emacs_tty *); |
110 | static int emacs_set_tty (int, struct emacs_tty *, int); | |
5d4cb038 | 111 | #if defined TIOCNOTTY || defined USG5 || defined CYGWIN |
845ca893 | 112 | static _Noreturn void croak (char *); |
5d4cb038 | 113 | #endif |
1fa53021 | 114 | |
5a16b9bc PE |
115 | /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */ |
116 | #ifndef ULLONG_MAX | |
117 | #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int) | |
118 | #endif | |
119 | ||
ff2e8052 DN |
120 | /* Declare here, including term.h is problematic on some systems. */ |
121 | extern void tputs (const char *, int, int (*)(int)); | |
122 | ||
91433552 | 123 | static const int baud_convert[] = |
86a5659e JB |
124 | { |
125 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
126 | 1800, 2400, 4800, 9600, 19200, 38400 | |
127 | }; | |
86a5659e | 128 | |
f78f1a83 | 129 | |
3480d92b | 130 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) |
f78f1a83 | 131 | |
b6682dd9 | 132 | /* Return the current working directory. Returns NULL on errors. |
f78f1a83 EZ |
133 | Any other returned value must be freed with free. This is used |
134 | only when get_current_dir_name is not defined on the system. */ | |
135 | char* | |
cf84bb53 | 136 | get_current_dir_name (void) |
f78f1a83 EZ |
137 | { |
138 | char *buf; | |
139 | char *pwd; | |
140 | struct stat dotstat, pwdstat; | |
141 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
142 | sometimes a nicer name, and using it may avoid a fatal error if a | |
143 | parent directory is searchable but not readable. */ | |
144 | if ((pwd = getenv ("PWD")) != 0 | |
145 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
146 | && stat (pwd, &pwdstat) == 0 | |
147 | && stat (".", &dotstat) == 0 | |
148 | && dotstat.st_ino == pwdstat.st_ino | |
149 | && dotstat.st_dev == pwdstat.st_dev | |
150 | #ifdef MAXPATHLEN | |
151 | && strlen (pwd) < MAXPATHLEN | |
152 | #endif | |
153 | ) | |
154 | { | |
38182d90 | 155 | buf = malloc (strlen (pwd) + 1); |
f78f1a83 EZ |
156 | if (!buf) |
157 | return NULL; | |
158 | strcpy (buf, pwd); | |
159 | } | |
160 | #ifdef HAVE_GETCWD | |
161 | else | |
162 | { | |
163 | size_t buf_size = 1024; | |
38182d90 | 164 | buf = malloc (buf_size); |
f78f1a83 EZ |
165 | if (!buf) |
166 | return NULL; | |
167 | for (;;) | |
168 | { | |
169 | if (getcwd (buf, buf_size) == buf) | |
170 | break; | |
171 | if (errno != ERANGE) | |
172 | { | |
173 | int tmp_errno = errno; | |
174 | free (buf); | |
175 | errno = tmp_errno; | |
176 | return NULL; | |
177 | } | |
178 | buf_size *= 2; | |
38182d90 | 179 | buf = realloc (buf, buf_size); |
f78f1a83 EZ |
180 | if (!buf) |
181 | return NULL; | |
182 | } | |
183 | } | |
184 | #else | |
185 | else | |
186 | { | |
187 | /* We need MAXPATHLEN here. */ | |
38182d90 | 188 | buf = malloc (MAXPATHLEN + 1); |
f78f1a83 EZ |
189 | if (!buf) |
190 | return NULL; | |
191 | if (getwd (buf) == NULL) | |
192 | { | |
193 | int tmp_errno = errno; | |
194 | free (buf); | |
195 | errno = tmp_errno; | |
196 | return NULL; | |
197 | } | |
198 | } | |
199 | #endif | |
200 | return buf; | |
201 | } | |
202 | #endif | |
203 | ||
64e971c3 | 204 | \f |
9628b887 | 205 | /* Discard pending input on all input descriptors. */ |
91bac16a | 206 | |
08633194 | 207 | void |
971de7fb | 208 | discard_tty_input (void) |
86a5659e | 209 | { |
fe03522b | 210 | #ifndef WINDOWSNT |
91bac16a | 211 | struct emacs_tty buf; |
86a5659e JB |
212 | |
213 | if (noninteractive) | |
214 | return; | |
215 | ||
fe03522b | 216 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 217 | while (dos_keyread () != -1) |
fe03522b | 218 | ; |
207bdbdb | 219 | #else /* not MSDOS */ |
9628b887 | 220 | { |
28d7d09f | 221 | struct tty_display_info *tty; |
9628b887 KL |
222 | for (tty = tty_list; tty; tty = tty->next) |
223 | { | |
0b0d3e0b KL |
224 | if (tty->input) /* Is the device suspended? */ |
225 | { | |
12e610e8 DN |
226 | emacs_get_tty (fileno (tty->input), &buf); |
227 | emacs_set_tty (fileno (tty->input), &buf, 0); | |
0b0d3e0b | 228 | } |
9628b887 KL |
229 | } |
230 | } | |
207bdbdb | 231 | #endif /* not MSDOS */ |
fe03522b | 232 | #endif /* not WINDOWSNT */ |
86a5659e JB |
233 | } |
234 | ||
16c290d8 | 235 | \f |
86a5659e JB |
236 | #ifdef SIGTSTP |
237 | ||
64e971c3 | 238 | /* Arrange for character C to be read as the next input from |
16c290d8 KL |
239 | the terminal. |
240 | XXX What if we have multiple ttys? | |
241 | */ | |
64e971c3 | 242 | |
dfcf069d | 243 | void |
0c2338d8 | 244 | stuff_char (char c) |
86a5659e | 245 | { |
428a555e | 246 | if (! FRAME_TERMCAP_P (SELECTED_FRAME ())) |
23dab951 RS |
247 | return; |
248 | ||
86a5659e JB |
249 | /* Should perhaps error if in batch mode */ |
250 | #ifdef TIOCSTI | |
0b0d3e0b | 251 | ioctl (fileno (CURTTY()->input), TIOCSTI, &c); |
86a5659e | 252 | #else /* no TIOCSTI */ |
71f06467 | 253 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
254 | #endif /* no TIOCSTI */ |
255 | } | |
256 | ||
257 | #endif /* SIGTSTP */ | |
64e971c3 | 258 | \f |
08633194 | 259 | void |
16c290d8 | 260 | init_baud_rate (int fd) |
86a5659e | 261 | { |
4c620157 | 262 | int emacs_ospeed; |
67342916 | 263 | |
86a5659e | 264 | if (noninteractive) |
5bdd7bdd | 265 | emacs_ospeed = 0; |
86a5659e JB |
266 | else |
267 | { | |
fe03522b | 268 | #ifdef DOS_NT |
5bdd7bdd | 269 | emacs_ospeed = 15; |
fe03522b | 270 | #else /* not DOS_NT */ |
e04a4e0d | 271 | struct termios sg; |
91bac16a | 272 | |
71f06467 | 273 | sg.c_cflag = B9600; |
16c290d8 | 274 | tcgetattr (fd, &sg); |
5bdd7bdd | 275 | emacs_ospeed = cfgetospeed (&sg); |
fe03522b | 276 | #endif /* not DOS_NT */ |
86a5659e | 277 | } |
177c0ea7 | 278 | |
5bdd7bdd GM |
279 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
280 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
281 | if (baud_rate == 0) |
282 | baud_rate = 1200; | |
283 | } | |
284 | ||
16c290d8 | 285 | \f |
86a5659e | 286 | |
1fa53021 PE |
287 | /* Set nonzero to make following function work under dbx |
288 | (at least for bsd). */ | |
289 | int wait_debugging EXTERNALLY_VISIBLE; | |
86a5659e | 290 | |
77defa9a | 291 | #ifndef MSDOS |
86a5659e | 292 | |
e7a6747f | 293 | static void |
d311d28c | 294 | wait_for_termination_1 (pid_t pid, int interruptible) |
86a5659e JB |
295 | { |
296 | while (1) | |
297 | { | |
5e617bc2 | 298 | #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__) |
4c8975ad RS |
299 | /* Note that kill returns -1 even if the process is just a zombie now. |
300 | But inevitably a SIGCHLD interrupt should be generated | |
13294f95 | 301 | and child_sig will do waitpid and make the process go away. */ |
4c8975ad RS |
302 | /* There is some indication that there is a bug involved with |
303 | termination of subprocesses, perhaps involving a kernel bug too, | |
304 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
305 | if that causes the problem to go away or get worse. */ | |
306 | sigsetmask (sigmask (SIGCHLD)); | |
307 | if (0 > kill (pid, 0)) | |
fe03522b | 308 | { |
4c8975ad RS |
309 | sigsetmask (SIGEMPTYMASK); |
310 | kill (getpid (), SIGCHLD); | |
311 | break; | |
312 | } | |
313 | if (wait_debugging) | |
314 | sleep (1); | |
315 | else | |
316 | sigpause (SIGEMPTYMASK); | |
2a633456 | 317 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
d6dae14b EZ |
318 | #ifdef WINDOWSNT |
319 | wait (0); | |
320 | break; | |
321 | #else /* not WINDOWSNT */ | |
9ab714c7 | 322 | sigblock (sigmask (SIGCHLD)); |
59957f85 GM |
323 | errno = 0; |
324 | if (kill (pid, 0) == -1 && errno == ESRCH) | |
9ab714c7 RS |
325 | { |
326 | sigunblock (sigmask (SIGCHLD)); | |
327 | break; | |
328 | } | |
ac3ac859 | 329 | |
0fdcb867 | 330 | sigsuspend (&empty_mask); |
d6dae14b | 331 | #endif /* not WINDOWSNT */ |
2a633456 | 332 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
1ef14cb4 LMI |
333 | if (interruptible) |
334 | QUIT; | |
86a5659e JB |
335 | } |
336 | } | |
337 | ||
e7a6747f AS |
338 | /* Wait for subprocess with process id `pid' to terminate and |
339 | make sure it will get eliminated (not remain forever as a zombie) */ | |
340 | ||
341 | void | |
d311d28c | 342 | wait_for_termination (pid_t pid) |
e7a6747f AS |
343 | { |
344 | wait_for_termination_1 (pid, 0); | |
345 | } | |
346 | ||
347 | /* Like the above, but allow keyboard interruption. */ | |
348 | void | |
d311d28c | 349 | interruptible_wait_for_termination (pid_t pid) |
e7a6747f AS |
350 | { |
351 | wait_for_termination_1 (pid, 1); | |
352 | } | |
353 | ||
86a5659e JB |
354 | /* |
355 | * flush any pending output | |
356 | * (may flush input as well; it does not matter the way we use it) | |
357 | */ | |
177c0ea7 | 358 | |
08633194 | 359 | void |
971de7fb | 360 | flush_pending_output (int channel) |
86a5659e | 361 | { |
9de940b5 | 362 | /* FIXME: maybe this function should be removed */ |
86a5659e | 363 | } |
64e971c3 | 364 | \f |
86a5659e JB |
365 | /* Set up the terminal at the other end of a pseudo-terminal that |
366 | we will be controlling an inferior through. | |
367 | It should not echo or do line-editing, since that is done | |
368 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
369 | ||
08633194 | 370 | void |
971de7fb | 371 | child_setup_tty (int out) |
86a5659e | 372 | { |
77defa9a | 373 | #ifndef WINDOWSNT |
91bac16a JB |
374 | struct emacs_tty s; |
375 | ||
12e610e8 | 376 | emacs_get_tty (out, &s); |
91bac16a JB |
377 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
378 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 379 | #ifdef NLDLY |
07cfc4e7 GM |
380 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html |
381 | Some versions of GNU Hurd do not have FFDLY? */ | |
382 | #ifdef FFDLY | |
91bac16a JB |
383 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
384 | /* No output delays */ | |
07cfc4e7 GM |
385 | #else |
386 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY); | |
387 | /* No output delays */ | |
388 | #endif | |
9d4e5eea | 389 | #endif |
91bac16a JB |
390 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
391 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
392 | #ifdef IUCLC |
393 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
394 | #endif | |
f7097b2a RS |
395 | #ifdef ISTRIP |
396 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
397 | #endif | |
23e4c8be | 398 | #ifdef OLCUC |
9d4e5eea RS |
399 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
400 | #endif | |
f7097b2a | 401 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 402 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
441f6399 RS |
403 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
404 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 405 | |
86a5659e | 406 | #ifdef HPUX |
91bac16a | 407 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 408 | #endif /* HPUX */ |
91bac16a | 409 | |
dfe598b5 RS |
410 | #ifdef SIGNALS_VIA_CHARACTERS |
411 | /* the QUIT and INTR character are used in process_send_signal | |
412 | so set them here to something useful. */ | |
fa51fa32 | 413 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 414 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 415 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
416 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
417 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
418 | ||
86a5659e | 419 | #ifdef AIX |
86a5659e JB |
420 | /* Also, PTY overloads NUL and BREAK. |
421 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
422 | s.main.c_iflag &= ~IGNBRK; |
423 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
424 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
425 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
426 | would force it to 0377. That looks like duplicated code. */ | |
91bac16a | 427 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
428 | #endif /* AIX */ |
429 | ||
aaa0a19a | 430 | /* We originally enabled ICANON (and set VEOF to 04), and then had |
c80e3b4a | 431 | process.c send additional EOF chars to flush the output when faced |
aaa0a19a | 432 | with long lines, but this leads to weird effects when the |
2b0a91e7 SM |
433 | subprocess has disabled ICANON and ends up seeing those spurious |
434 | extra EOFs. So we don't send EOFs any more in | |
aaa0a19a SM |
435 | process.c:send_process. First we tried to disable ICANON by |
436 | default, so if a subsprocess sets up ICANON, it's his problem (or | |
437 | the Elisp package that talks to it) to deal with lines that are | |
438 | too long. But this disables some features, such as the ability | |
439 | to send EOF signals. So we re-enabled ICANON but there is no | |
440 | more "send eof to flush" going on (which is wrong and unportable | |
441 | in itself). The correct way to handle too much output is to | |
442 | buffer what could not be written and then write it again when | |
443 | select returns ok for writing. This has it own set of | |
444 | problems. Write is now asynchronous, is that a problem? How much | |
445 | do we buffer, and what do we do when that limit is reached? */ | |
9a747ba6 JD |
446 | |
447 | s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */ | |
448 | s.main.c_cc[VEOF] = 'D'&037; /* Control-D */ | |
3d15fe78 | 449 | #if 0 /* These settings only apply to non-ICANON mode. */ |
2b0a91e7 SM |
450 | s.main.c_cc[VMIN] = 1; |
451 | s.main.c_cc[VTIME] = 0; | |
aaa0a19a | 452 | #endif |
2b0a91e7 | 453 | |
12e610e8 | 454 | emacs_set_tty (out, &s, 0); |
77defa9a | 455 | #endif /* not WINDOWSNT */ |
86a5659e | 456 | } |
57507bf8 | 457 | #endif /* not MSDOS */ |
86a5659e | 458 | |
64e971c3 | 459 | \f |
86a5659e JB |
460 | /* Record a signal code and the handler for it. */ |
461 | struct save_signal | |
462 | { | |
463 | int code; | |
9af30bdf | 464 | void (*handler) (int); |
86a5659e JB |
465 | }; |
466 | ||
f57e2426 J |
467 | static void save_signal_handlers (struct save_signal *); |
468 | static void restore_signal_handlers (struct save_signal *); | |
35a05cca | 469 | |
86a5659e JB |
470 | /* Suspend the Emacs process; give terminal to its superior. */ |
471 | ||
08633194 | 472 | void |
971de7fb | 473 | sys_suspend (void) |
86a5659e | 474 | { |
c4ea52a6 | 475 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 476 | |
5a570e37 | 477 | { |
e89a2cd5 | 478 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
479 | EMACS_KILLPG (pgrp, SIGTSTP); |
480 | } | |
86a5659e JB |
481 | |
482 | #else /* No SIGTSTP */ | |
86a5659e JB |
483 | /* On a system where suspending is not implemented, |
484 | instead fork a subshell and let it talk directly to the terminal | |
485 | while we wait. */ | |
a0932daa KH |
486 | sys_subshell (); |
487 | ||
a0932daa | 488 | #endif /* no SIGTSTP */ |
a0932daa KH |
489 | } |
490 | ||
491 | /* Fork a subshell. */ | |
492 | ||
08633194 | 493 | void |
971de7fb | 494 | sys_subshell (void) |
a0932daa | 495 | { |
ad00c243 | 496 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
497 | int st; |
498 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
499 | #endif | |
efa04277 | 500 | int pid; |
86a5659e | 501 | struct save_signal saved_handlers[5]; |
efa04277 | 502 | Lisp_Object dir; |
5e41f65d | 503 | unsigned char *volatile str_volatile = 0; |
7e9123a2 | 504 | unsigned char *str; |
efa04277 | 505 | int len; |
86a5659e JB |
506 | |
507 | saved_handlers[0].code = SIGINT; | |
508 | saved_handlers[1].code = SIGQUIT; | |
509 | saved_handlers[2].code = SIGTERM; | |
510 | #ifdef SIGIO | |
511 | saved_handlers[3].code = SIGIO; | |
512 | saved_handlers[4].code = 0; | |
513 | #else | |
514 | saved_handlers[3].code = 0; | |
515 | #endif | |
516 | ||
efa04277 RS |
517 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
518 | which somehow wedges the hp compiler. So instead... */ | |
519 | ||
520 | dir = intern ("default-directory"); | |
0e7e7a58 | 521 | if (NILP (Fboundp (dir))) |
efa04277 RS |
522 | goto xyzzy; |
523 | dir = Fsymbol_value (dir); | |
914e81a2 | 524 | if (!STRINGP (dir)) |
efa04277 RS |
525 | goto xyzzy; |
526 | ||
527 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
38182d90 | 528 | str_volatile = str = alloca (SCHARS (dir) + 2); |
d5db4077 | 529 | len = SCHARS (dir); |
72af86bd | 530 | memcpy (str, SDATA (dir), len); |
efa04277 RS |
531 | if (str[len - 1] != '/') str[len++] = '/'; |
532 | str[len] = 0; | |
533 | xyzzy: | |
534 | ||
ad00c243 | 535 | #ifdef DOS_NT |
7964ba9e | 536 | pid = 0; |
718ca3cf RS |
537 | save_signal_handlers (saved_handlers); |
538 | synch_process_alive = 1; | |
177c0ea7 | 539 | #else |
efa04277 | 540 | pid = vfork (); |
86a5659e JB |
541 | if (pid == -1) |
542 | error ("Can't spawn subshell"); | |
7964ba9e RS |
543 | #endif |
544 | ||
86a5659e JB |
545 | if (pid == 0) |
546 | { | |
8ea90aa3 | 547 | const char *sh = 0; |
86a5659e | 548 | |
ad00c243 | 549 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 550 | getwd (oldwd); |
7964ba9e RS |
551 | if (sh == 0) |
552 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 553 | #endif |
7964ba9e RS |
554 | if (sh == 0) |
555 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
556 | if (sh == 0) |
557 | sh = "sh"; | |
207bdbdb | 558 | |
86a5659e | 559 | /* Use our buffer's default directory for the subshell. */ |
5e41f65d | 560 | str = str_volatile; |
32299e33 PE |
561 | if (str && chdir ((char *) str) != 0) |
562 | { | |
563 | #ifndef DOS_NT | |
564 | ignore_value (write (1, "Can't chdir\n", 12)); | |
565 | _exit (1); | |
566 | #endif | |
567 | } | |
efa04277 | 568 | |
86a5659e | 569 | close_process_descs (); /* Close Emacs's pipes/ptys */ |
1593c2fe | 570 | |
fe03522b | 571 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 572 | { |
48178f9a EZ |
573 | char *epwd = getenv ("PWD"); |
574 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
575 | |
576 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 577 | if (epwd) |
c0917202 | 578 | { |
48178f9a | 579 | strcpy (old_pwd, epwd); |
c0917202 EZ |
580 | if (str[len - 1] == '/') |
581 | str[len - 1] = '\0'; | |
582 | setenv ("PWD", str, 1); | |
583 | } | |
584 | st = system (sh); | |
32299e33 | 585 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
48178f9a | 586 | if (epwd) |
c0917202 EZ |
587 | putenv (old_pwd); /* restore previous value */ |
588 | } | |
207bdbdb | 589 | #else /* not MSDOS */ |
fe03522b | 590 | #ifdef WINDOWSNT |
fe03522b RS |
591 | /* Waits for process completion */ |
592 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
32299e33 | 593 | chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */ |
fe03522b RS |
594 | if (pid == -1) |
595 | write (1, "Can't execute subshell", 22); | |
fe03522b | 596 | #else /* not WINDOWSNT */ |
e120ea40 | 597 | execlp (sh, sh, (char *) 0); |
67342916 | 598 | ignore_value (write (1, "Can't execute subshell", 22)); |
86a5659e | 599 | _exit (1); |
fe03522b | 600 | #endif /* not WINDOWSNT */ |
207bdbdb | 601 | #endif /* not MSDOS */ |
86a5659e JB |
602 | } |
603 | ||
718ca3cf | 604 | /* Do this now if we did not do it before. */ |
ed68db4d | 605 | #ifndef MSDOS |
86a5659e | 606 | save_signal_handlers (saved_handlers); |
ffafc793 | 607 | synch_process_alive = 1; |
718ca3cf RS |
608 | #endif |
609 | ||
ad00c243 | 610 | #ifndef DOS_NT |
86a5659e | 611 | wait_for_termination (pid); |
7964ba9e | 612 | #endif |
86a5659e | 613 | restore_signal_handlers (saved_handlers); |
718ca3cf | 614 | synch_process_alive = 0; |
86a5659e JB |
615 | } |
616 | ||
35a05cca | 617 | static void |
971de7fb | 618 | save_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
619 | { |
620 | while (saved_handlers->code) | |
621 | { | |
508b171c | 622 | saved_handlers->handler |
9af30bdf | 623 | = (void (*) (int)) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
624 | saved_handlers++; |
625 | } | |
626 | } | |
627 | ||
35a05cca | 628 | static void |
971de7fb | 629 | restore_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
630 | { |
631 | while (saved_handlers->code) | |
632 | { | |
633 | signal (saved_handlers->code, saved_handlers->handler); | |
634 | saved_handlers++; | |
635 | } | |
636 | } | |
637 | \f | |
4d553a13 KL |
638 | #ifndef SIGIO |
639 | /* If SIGIO is broken, don't do anything. */ | |
640 | void | |
641 | init_sigio (int fd) | |
642 | { | |
643 | } | |
644 | ||
604efe86 | 645 | static void |
4d553a13 KL |
646 | reset_sigio (int fd) |
647 | { | |
648 | } | |
649 | ||
650 | void | |
651 | request_sigio (void) | |
652 | { | |
653 | } | |
654 | ||
655 | void | |
656 | unrequest_sigio (void) | |
657 | { | |
658 | } | |
659 | ||
660 | #else | |
86a5659e JB |
661 | #ifdef F_SETFL |
662 | ||
1fa53021 | 663 | static int old_fcntl_flags[MAXDESC]; |
86a5659e | 664 | |
08633194 | 665 | void |
971de7fb | 666 | init_sigio (int fd) |
86a5659e JB |
667 | { |
668 | #ifdef FASYNC | |
819b8f00 KL |
669 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
670 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
86a5659e | 671 | #endif |
23dab951 | 672 | interrupts_deferred = 0; |
86a5659e JB |
673 | } |
674 | ||
604efe86 | 675 | static void |
971de7fb | 676 | reset_sigio (int fd) |
86a5659e | 677 | { |
4d553a13 | 678 | #ifdef FASYNC |
819b8f00 | 679 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 680 | #endif |
86a5659e JB |
681 | } |
682 | ||
eb8c3be9 | 683 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
428a555e | 684 | /* XXX Uhm, FASYNC is not used anymore here. */ |
6d8cf830 | 685 | /* XXX Yeah, but you need it for SIGIO, don't you? */ |
86a5659e | 686 | |
08633194 | 687 | void |
971de7fb | 688 | request_sigio (void) |
86a5659e | 689 | { |
6bbba5a6 | 690 | if (noninteractive) |
23dab951 RS |
691 | return; |
692 | ||
86a5659e | 693 | #ifdef SIGWINCH |
e065a56e | 694 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 695 | #endif |
0a125897 | 696 | sigunblock (sigmask (SIGIO)); |
86a5659e JB |
697 | |
698 | interrupts_deferred = 0; | |
699 | } | |
700 | ||
08633194 | 701 | void |
0a125897 | 702 | unrequest_sigio (void) |
cf84bb53 | 703 | { |
6bbba5a6 KL |
704 | if (noninteractive) |
705 | return; | |
706 | ||
707 | #if 0 /* XXX What's wrong with blocking SIGIO under X? */ | |
708 | if (x_display_list) | |
23dab951 | 709 | return; |
428a555e | 710 | #endif |
6bbba5a6 | 711 | |
86a5659e | 712 | #ifdef SIGWINCH |
e065a56e | 713 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 714 | #endif |
0a125897 | 715 | sigblock (sigmask (SIGIO)); |
86a5659e JB |
716 | interrupts_deferred = 1; |
717 | } | |
718 | ||
719 | #else /* no FASYNC */ | |
feb67dfe | 720 | #ifndef MSDOS |
25ab68af | 721 | |
08633194 | 722 | void |
cf84bb53 | 723 | request_sigio (void) |
86a5659e | 724 | { |
6e5b2385 | 725 | if (noninteractive || read_socket_hook) |
23dab951 RS |
726 | return; |
727 | ||
86a5659e JB |
728 | croak ("request_sigio"); |
729 | } | |
177c0ea7 | 730 | |
08633194 | 731 | void |
cf84bb53 | 732 | unrequest_sigio (void) |
86a5659e | 733 | { |
6e5b2385 | 734 | if (noninteractive || read_socket_hook) |
23dab951 RS |
735 | return; |
736 | ||
86a5659e JB |
737 | croak ("unrequest_sigio"); |
738 | } | |
feb67dfe EZ |
739 | |
740 | #endif /* MSDOS */ | |
86a5659e JB |
741 | #endif /* FASYNC */ |
742 | #endif /* F_SETFL */ | |
4d553a13 | 743 | #endif /* SIGIO */ |
9ae8f997 | 744 | |
9ae8f997 | 745 | \f |
68936329 JB |
746 | /* Getting and setting emacs_tty structures. */ |
747 | ||
748 | /* Set *TC to the parameters associated with the terminal FD. | |
749 | Return zero if all's well, or -1 if we ran into an error we | |
750 | couldn't deal with. */ | |
751 | int | |
971de7fb | 752 | emacs_get_tty (int fd, struct emacs_tty *settings) |
68936329 JB |
753 | { |
754 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 755 | #ifndef DOS_NT |
68936329 | 756 | /* We have those nifty POSIX tcmumbleattr functions. */ |
72af86bd | 757 | memset (&settings->main, 0, sizeof (settings->main)); |
68936329 JB |
758 | if (tcgetattr (fd, &settings->main) < 0) |
759 | return -1; | |
68936329 JB |
760 | #endif |
761 | ||
762 | /* We have survived the tempest. */ | |
763 | return 0; | |
764 | } | |
765 | ||
766 | ||
767 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 768 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 769 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 770 | |
68936329 | 771 | int |
971de7fb | 772 | emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) |
68936329 JB |
773 | { |
774 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 775 | #ifndef DOS_NT |
e6cc3307 | 776 | int i; |
68936329 JB |
777 | /* We have those nifty POSIX tcmumbleattr functions. |
778 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 779 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
780 | able to perform any of the requested actions, even if some |
781 | of the requested actions could not be performed. | |
782 | We must read settings back to ensure tty setup properly. | |
783 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 784 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 785 | for (i = 0 ; i < 10 ; i++) |
394049ec | 786 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
787 | { |
788 | if (errno == EINTR) | |
789 | continue; | |
790 | else | |
791 | return -1; | |
792 | } | |
793 | else | |
794 | { | |
795 | struct termios new; | |
796 | ||
72af86bd | 797 | memset (&new, 0, sizeof (new)); |
68936329 JB |
798 | /* Get the current settings, and see if they're what we asked for. */ |
799 | tcgetattr (fd, &new); | |
e6cc3307 RS |
800 | /* We cannot use memcmp on the whole structure here because under |
801 | * aix386 the termios structure has some reserved field that may | |
802 | * not be filled in. | |
803 | */ | |
804 | if ( new.c_iflag == settings->main.c_iflag | |
805 | && new.c_oflag == settings->main.c_oflag | |
806 | && new.c_cflag == settings->main.c_cflag | |
807 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 808 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 809 | break; |
e6cc3307 RS |
810 | else |
811 | continue; | |
68936329 | 812 | } |
68936329 | 813 | #endif |
177c0ea7 | 814 | |
68936329 JB |
815 | /* We have survived the tempest. */ |
816 | return 0; | |
817 | } | |
818 | ||
819 | \f | |
86a5659e JB |
820 | |
821 | #ifdef F_SETOWN | |
1fa53021 | 822 | static int old_fcntl_owner[MAXDESC]; |
86a5659e JB |
823 | #endif /* F_SETOWN */ |
824 | ||
86a5659e JB |
825 | /* This may also be defined in stdio, |
826 | but if so, this does no harm, | |
827 | and using the same name avoids wasting the other one's space. */ | |
828 | ||
9d9a7716 | 829 | #if defined (USG) |
86a5659e JB |
830 | unsigned char _sobuf[BUFSIZ+8]; |
831 | #else | |
832 | char _sobuf[BUFSIZ]; | |
833 | #endif | |
177c0ea7 | 834 | |
da8e1115 KL |
835 | /* Initialize the terminal mode on all tty devices that are currently |
836 | open. */ | |
837 | ||
08633194 | 838 | void |
28d440ab KL |
839 | init_all_sys_modes (void) |
840 | { | |
28d7d09f | 841 | struct tty_display_info *tty; |
16c290d8 | 842 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 843 | init_sys_modes (tty); |
28d440ab KL |
844 | } |
845 | ||
da8e1115 KL |
846 | /* Initialize the terminal mode on the given tty device. */ |
847 | ||
28d440ab | 848 | void |
971de7fb | 849 | init_sys_modes (struct tty_display_info *tty_out) |
86a5659e | 850 | { |
91bac16a | 851 | struct emacs_tty tty; |
e112cc37 | 852 | Lisp_Object terminal; |
91bac16a | 853 | |
4ec5cb58 RS |
854 | Vtty_erase_char = Qnil; |
855 | ||
86a5659e JB |
856 | if (noninteractive) |
857 | return; | |
858 | ||
0b0d3e0b KL |
859 | if (!tty_out->output) |
860 | return; /* The tty is suspended. */ | |
cf84bb53 | 861 | |
2246281f | 862 | if (! tty_out->old_tty) |
38182d90 | 863 | tty_out->old_tty = xmalloc (sizeof *tty_out->old_tty); |
cf84bb53 | 864 | |
12e610e8 | 865 | emacs_get_tty (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 866 | |
2246281f | 867 | tty = *tty_out->old_tty; |
86a5659e | 868 | |
a7ebc409 | 869 | #if !defined (DOS_NT) |
2246281f | 870 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 871 | |
2246281f KL |
872 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
873 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
874 | #ifdef INLCR /* I'm just being cautious, |
875 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 876 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 877 | #endif |
86a5659e | 878 | #ifdef ISTRIP |
2246281f | 879 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 880 | #endif |
2246281f KL |
881 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
882 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 883 | #ifdef IEXTEN |
2246281f | 884 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 885 | #endif |
2246281f KL |
886 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
887 | if (tty_out->flow_control) | |
888 | { | |
889 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 890 | #ifdef IXANY |
2246281f | 891 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 892 | #endif /* IXANY */ |
2246281f KL |
893 | } |
894 | else | |
895 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
896 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
897 | on output */ | |
898 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 899 | #ifdef CS8 |
2246281f KL |
900 | if (tty_out->meta_key) |
901 | { | |
902 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
903 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
904 | } | |
86a5659e | 905 | #endif |
e112cc37 ET |
906 | |
907 | XSETTERMINAL(terminal, tty_out->terminal); | |
908 | if (!NILP (Fcontrolling_tty_p (terminal))) | |
2246281f KL |
909 | { |
910 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
911 | /* Set up C-g for both SIGQUIT and SIGINT. | |
912 | We don't know which we will get, but we handle both alike | |
913 | so which one it really gives us does not matter. */ | |
914 | tty.main.c_cc[VQUIT] = quit_char; | |
915 | } | |
916 | else | |
917 | { | |
918 | /* We normally don't get interrupt or quit signals from tty | |
919 | devices other than our controlling terminal; therefore, | |
920 | we must handle C-g as normal input. Unfortunately, this | |
921 | means that the interrupt and quit feature must be | |
922 | disabled on secondary ttys, or we would not even see the | |
923 | keypress. | |
cf84bb53 | 924 | |
2246281f KL |
925 | Note that even though emacsclient could have special code |
926 | to pass SIGINT to Emacs, we should _not_ enable | |
927 | interrupt/quit keys for emacsclient frames. This means | |
928 | that we can't break out of loops in C code from a | |
929 | secondary tty frame, but we can always decide what | |
930 | display the C-g came from, which is more important from a | |
931 | usability point of view. (Consider the case when two | |
932 | people work together using the same Emacs instance.) */ | |
933 | tty.main.c_cc[VINTR] = CDISABLE; | |
934 | tty.main.c_cc[VQUIT] = CDISABLE; | |
935 | } | |
936 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
937 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 938 | #ifdef VSWTCH |
2246281f | 939 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 940 | of C-z */ |
86a5659e | 941 | #endif /* VSWTCH */ |
cf84bb53 | 942 | |
86a5659e | 943 | #ifdef VSUSP |
a7ebc409 | 944 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */ |
86a5659e JB |
945 | #endif /* VSUSP */ |
946 | #ifdef V_DSUSP | |
a7ebc409 | 947 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */ |
86a5659e | 948 | #endif /* V_DSUSP */ |
e2b40c23 | 949 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 950 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 951 | #endif /* VDSUSP */ |
92c995de | 952 | #ifdef VLNEXT |
2246281f | 953 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
954 | #endif /* VLNEXT */ |
955 | #ifdef VREPRINT | |
2246281f | 956 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
957 | #endif /* VREPRINT */ |
958 | #ifdef VWERASE | |
2246281f | 959 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
960 | #endif /* VWERASE */ |
961 | #ifdef VDISCARD | |
2246281f | 962 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 963 | #endif /* VDISCARD */ |
c179a6d1 | 964 | |
2246281f KL |
965 | if (tty_out->flow_control) |
966 | { | |
421dd92f | 967 | #ifdef VSTART |
2246281f | 968 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
969 | #endif /* VSTART */ |
970 | #ifdef VSTOP | |
2246281f | 971 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 972 | #endif /* VSTOP */ |
2246281f KL |
973 | } |
974 | else | |
975 | { | |
c179a6d1 | 976 | #ifdef VSTART |
2246281f | 977 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
978 | #endif /* VSTART */ |
979 | #ifdef VSTOP | |
2246281f | 980 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 981 | #endif /* VSTOP */ |
2246281f | 982 | } |
c179a6d1 | 983 | |
86a5659e | 984 | #ifdef AIX |
f5272227 KL |
985 | tty.main.c_cc[VSTRT] = CDISABLE; |
986 | tty.main.c_cc[VSTOP] = CDISABLE; | |
987 | tty.main.c_cc[VSUSP] = CDISABLE; | |
988 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
2246281f KL |
989 | if (tty_out->flow_control) |
990 | { | |
ac567c95 | 991 | #ifdef VSTART |
2246281f | 992 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
993 | #endif /* VSTART */ |
994 | #ifdef VSTOP | |
2246281f | 995 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 996 | #endif /* VSTOP */ |
2246281f KL |
997 | } |
998 | /* Also, PTY overloads NUL and BREAK. | |
999 | don't ignore break, but don't signal either, so it looks like NUL. | |
1000 | This really serves a purpose only if running in an XTERM window | |
1001 | or via TELNET or the like, but does no harm elsewhere. */ | |
1002 | tty.main.c_iflag &= ~IGNBRK; | |
1003 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e | 1004 | #endif |
fe03522b | 1005 | #endif /* not DOS_NT */ |
cf84bb53 | 1006 | |
207bdbdb | 1007 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
1008 | if (!tty_out->term_initted) |
1009 | internal_terminal_init (); | |
4e389d32 | 1010 | dos_ttraw (tty_out); |
207bdbdb | 1011 | #endif |
91bac16a | 1012 | |
12e610e8 | 1013 | emacs_set_tty (fileno (tty_out->input), &tty, 0); |
86a5659e | 1014 | |
2246281f KL |
1015 | /* This code added to insure that, if flow-control is not to be used, |
1016 | we have an unlocked terminal at the start. */ | |
91bac16a | 1017 | |
86a5659e | 1018 | #ifdef TCXONC |
0b0d3e0b | 1019 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e | 1020 | #endif |
86a5659e | 1021 | #ifdef TIOCSTART |
0b0d3e0b | 1022 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e | 1023 | #endif |
86a5659e | 1024 | |
a7ebc409 | 1025 | #if !defined (DOS_NT) |
51417996 | 1026 | #ifdef TCOON |
0b0d3e0b | 1027 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 1028 | #endif |
51417996 | 1029 | #endif |
d228f207 | 1030 | |
86a5659e | 1031 | #ifdef F_SETFL |
eb8c3be9 | 1032 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
2246281f | 1033 | if (interrupt_input) |
86a5659e | 1034 | { |
0b0d3e0b KL |
1035 | old_fcntl_owner[fileno (tty_out->input)] = |
1036 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
1037 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
1038 | init_sigio (fileno (tty_out->input)); | |
7e5a23bd | 1039 | #ifdef HAVE_GPM |
75a8734b | 1040 | if (gpm_tty == tty_out) |
3e748bcb | 1041 | { |
75a8734b | 1042 | /* Arrange for mouse events to give us SIGIO signals. */ |
3e748bcb | 1043 | fcntl (gpm_fd, F_SETOWN, getpid ()); |
57669cf1 | 1044 | fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK); |
3e748bcb NR |
1045 | init_sigio (gpm_fd); |
1046 | } | |
7e5a23bd | 1047 | #endif /* HAVE_GPM */ |
86a5659e JB |
1048 | } |
1049 | #endif /* F_GETOWN */ | |
1050 | #endif /* F_SETFL */ | |
1051 | ||
86a5659e JB |
1052 | #ifdef _IOFBF |
1053 | /* This symbol is defined on recent USG systems. | |
1054 | Someone says without this call USG won't really buffer the file | |
1055 | even with a call to setbuf. */ | |
0b0d3e0b | 1056 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1057 | #else |
0b0d3e0b | 1058 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 1059 | #endif |
4d553a13 | 1060 | |
69fb5031 JR |
1061 | if (tty_out->terminal->set_terminal_modes_hook) |
1062 | tty_out->terminal->set_terminal_modes_hook (tty_out->terminal); | |
4b311aaf | 1063 | |
9628b887 KL |
1064 | if (!tty_out->term_initted) |
1065 | { | |
1066 | Lisp_Object tail, frame; | |
1067 | FOR_EACH_FRAME (tail, frame) | |
1068 | { | |
daf01701 | 1069 | /* XXX This needs to be revised. */ |
9628b887 KL |
1070 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1071 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1072 | init_frame_faces (XFRAME (frame)); | |
1073 | } | |
1074 | } | |
045942b2 | 1075 | |
9628b887 | 1076 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1077 | { |
855a0da7 SM |
1078 | /* We used to call "direct_output_forward_char(0)" here, |
1079 | but it's not clear why, since it may not do anything anyway. */ | |
86a5659e JB |
1080 | } |
1081 | else | |
1082 | { | |
9628b887 | 1083 | Lisp_Object tail, frame; |
0137dbf7 | 1084 | frame_garbaged = 1; |
9628b887 KL |
1085 | FOR_EACH_FRAME (tail, frame) |
1086 | { | |
7ab98847 EZ |
1087 | if ((FRAME_TERMCAP_P (XFRAME (frame)) |
1088 | || FRAME_MSDOS_P (XFRAME (frame))) | |
9628b887 KL |
1089 | && FRAME_TTY (XFRAME (frame)) == tty_out) |
1090 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1091 | } | |
86a5659e | 1092 | } |
91bac16a | 1093 | |
9628b887 | 1094 | tty_out->term_initted = 1; |
86a5659e JB |
1095 | } |
1096 | ||
1097 | /* Return nonzero if safe to use tabs in output. | |
1098 | At the time this is called, init_sys_modes has not been done yet. */ | |
177c0ea7 | 1099 | |
dfcf069d | 1100 | int |
16c290d8 | 1101 | tabs_safe_p (int fd) |
86a5659e | 1102 | { |
6548cf00 | 1103 | struct emacs_tty etty; |
91bac16a | 1104 | |
12e610e8 DN |
1105 | emacs_get_tty (fd, &etty); |
1106 | #ifndef DOS_NT | |
1107 | #ifdef TABDLY | |
1108 | return ((etty.main.c_oflag & TABDLY) != TAB3); | |
1109 | #else /* not TABDLY */ | |
1110 | return 1; | |
1111 | #endif /* not TABDLY */ | |
1112 | #else /* DOS_NT */ | |
1113 | return 0; | |
1114 | #endif /* DOS_NT */ | |
86a5659e | 1115 | } |
73d5358f | 1116 | \f |
86a5659e | 1117 | /* Get terminal size from system. |
73d5358f RS |
1118 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1119 | We store 0 if there's no valid information. */ | |
86a5659e | 1120 | |
08633194 | 1121 | void |
16c290d8 | 1122 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1123 | { |
e16e55d4 | 1124 | #if defined TIOCGWINSZ |
91bac16a JB |
1125 | |
1126 | /* BSD-style. */ | |
86a5659e | 1127 | struct winsize size; |
91bac16a | 1128 | |
16c290d8 | 1129 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1130 | *widthp = *heightp = 0; |
1131 | else | |
1132 | { | |
1133 | *widthp = size.ws_col; | |
1134 | *heightp = size.ws_row; | |
1135 | } | |
1136 | ||
e16e55d4 | 1137 | #elif defined TIOCGSIZE |
91bac16a JB |
1138 | |
1139 | /* SunOS - style. */ | |
177c0ea7 | 1140 | struct ttysize size; |
91bac16a | 1141 | |
16c290d8 | 1142 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1143 | *widthp = *heightp = 0; |
1144 | else | |
1145 | { | |
1146 | *widthp = size.ts_cols; | |
1147 | *heightp = size.ts_lines; | |
1148 | } | |
1149 | ||
e16e55d4 JB |
1150 | #elif defined WINDOWSNT |
1151 | ||
1152 | CONSOLE_SCREEN_BUFFER_INFO info; | |
1153 | if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info)) | |
1154 | { | |
1155 | *widthp = info.srWindow.Right - info.srWindow.Left + 1; | |
1156 | *heightp = info.srWindow.Bottom - info.srWindow.Top + 1; | |
1157 | } | |
1158 | else | |
1159 | *widthp = *heightp = 0; | |
1160 | ||
1161 | #elif defined MSDOS | |
1162 | ||
207bdbdb RS |
1163 | *widthp = ScreenCols (); |
1164 | *heightp = ScreenRows (); | |
e16e55d4 | 1165 | |
86a5659e | 1166 | #else /* system doesn't know size */ |
e16e55d4 | 1167 | |
86a5659e JB |
1168 | *widthp = 0; |
1169 | *heightp = 0; | |
e16e55d4 | 1170 | |
207bdbdb | 1171 | #endif |
86a5659e | 1172 | } |
91bac16a | 1173 | |
73d5358f RS |
1174 | /* Set the logical window size associated with descriptor FD |
1175 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1176 | ||
1177 | int | |
971de7fb | 1178 | set_window_size (int fd, int height, int width) |
73d5358f RS |
1179 | { |
1180 | #ifdef TIOCSWINSZ | |
1181 | ||
1182 | /* BSD-style. */ | |
1183 | struct winsize size; | |
1184 | size.ws_row = height; | |
1185 | size.ws_col = width; | |
1186 | ||
1187 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1188 | return 0; /* error */ | |
1189 | else | |
1190 | return 1; | |
1191 | ||
1192 | #else | |
1193 | #ifdef TIOCSSIZE | |
1194 | ||
1195 | /* SunOS - style. */ | |
177c0ea7 | 1196 | struct ttysize size; |
73d5358f RS |
1197 | size.ts_lines = height; |
1198 | size.ts_cols = width; | |
1199 | ||
1200 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1201 | return 0; | |
1202 | else | |
1203 | return 1; | |
1204 | #else | |
1205 | return -1; | |
1206 | #endif /* not SunOS-style */ | |
1207 | #endif /* not BSD-style */ | |
1208 | } | |
1209 | ||
86a5659e | 1210 | \f |
da8e1115 KL |
1211 | |
1212 | /* Prepare all terminal devices for exiting Emacs. */ | |
1213 | ||
28d440ab KL |
1214 | void |
1215 | reset_all_sys_modes (void) | |
1216 | { | |
28d7d09f | 1217 | struct tty_display_info *tty; |
16c290d8 | 1218 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1219 | reset_sys_modes (tty); |
28d440ab KL |
1220 | } |
1221 | ||
0a125897 | 1222 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1223 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1224 | |
08633194 | 1225 | void |
971de7fb | 1226 | reset_sys_modes (struct tty_display_info *tty_out) |
86a5659e JB |
1227 | { |
1228 | if (noninteractive) | |
1229 | { | |
1230 | fflush (stdout); | |
1231 | return; | |
1232 | } | |
9628b887 | 1233 | if (!tty_out->term_initted) |
86a5659e | 1234 | return; |
da8e1115 | 1235 | |
0b0d3e0b KL |
1236 | if (!tty_out->output) |
1237 | return; /* The tty is suspended. */ | |
cf84bb53 | 1238 | |
da8e1115 KL |
1239 | /* Go to and clear the last line of the terminal. */ |
1240 | ||
0a125897 | 1241 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
cf84bb53 | 1242 | |
da8e1115 KL |
1243 | /* Code adapted from tty_clear_end_of_line. */ |
1244 | if (tty_out->TS_clr_line) | |
1245 | { | |
1246 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1247 | } | |
1248 | else | |
1249 | { /* have to do it the hard way */ | |
1250 | int i; | |
ed8dad6b | 1251 | tty_turn_off_insert (tty_out); |
cf84bb53 | 1252 | |
da8e1115 | 1253 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1254 | { |
1255 | fputc (' ', tty_out->output); | |
1256 | } | |
da8e1115 | 1257 | } |
cf84bb53 | 1258 | |
0a125897 | 1259 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 | 1260 | fflush (tty_out->output); |
cf84bb53 | 1261 | |
69fb5031 JR |
1262 | if (tty_out->terminal->reset_terminal_modes_hook) |
1263 | tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal); | |
2f98e6e3 | 1264 | |
2a633456 | 1265 | #ifdef BSD_SYSTEM |
86a5659e | 1266 | /* Avoid possible loss of output when changing terminal modes. */ |
0b0d3e0b | 1267 | fsync (fileno (tty_out->output)); |
86a5659e | 1268 | #endif |
91bac16a | 1269 | |
86a5659e | 1270 | #ifdef F_SETFL |
eb8c3be9 | 1271 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1272 | if (interrupt_input) |
1273 | { | |
0b0d3e0b KL |
1274 | reset_sigio (fileno (tty_out->input)); |
1275 | fcntl (fileno (tty_out->input), F_SETOWN, | |
1276 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
1277 | } |
1278 | #endif /* F_SETOWN */ | |
a6b00318 | 1279 | #ifdef O_NDELAY |
0b0d3e0b KL |
1280 | fcntl (fileno (tty_out->input), F_SETFL, |
1281 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NDELAY); | |
a6b00318 | 1282 | #endif |
86a5659e | 1283 | #endif /* F_SETFL */ |
91bac16a | 1284 | |
fca177d4 | 1285 | if (tty_out->old_tty) |
12e610e8 | 1286 | while (emacs_set_tty (fileno (tty_out->input), |
fca177d4 | 1287 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 1288 | ; |
86a5659e | 1289 | |
207bdbdb RS |
1290 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1291 | dos_ttcooked (); | |
1292 | #endif | |
1293 | ||
86a5659e JB |
1294 | } |
1295 | \f | |
1296 | #ifdef HAVE_PTYS | |
1297 | ||
1298 | /* Set up the proper status flags for use of a pty. */ | |
1299 | ||
08633194 | 1300 | void |
971de7fb | 1301 | setup_pty (int fd) |
86a5659e JB |
1302 | { |
1303 | /* I'm told that TOICREMOTE does not mean control chars | |
1304 | "can't be sent" but rather that they don't have | |
1305 | input-editing or signaling effects. | |
1306 | That should be good, because we have other ways | |
1307 | to do those things in Emacs. | |
1308 | However, telnet mode seems not to work on 4.2. | |
1309 | So TIOCREMOTE is turned off now. */ | |
1310 | ||
1311 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1312 | will hang. In particular, the "timeout" feature (which | |
1313 | causes a read to return if there is no data available) | |
1314 | does this. Also it is known that telnet mode will hang | |
1315 | in such a way that Emacs must be stopped (perhaps this | |
1316 | is the same problem). | |
177c0ea7 | 1317 | |
86a5659e JB |
1318 | If TIOCREMOTE is turned off, then there is a bug in |
1319 | hp-ux which sometimes loses data. Apparently the | |
1320 | code which blocks the master process when the internal | |
1321 | buffer fills up does not work. Other than this, | |
1322 | though, everything else seems to work fine. | |
177c0ea7 | 1323 | |
86a5659e JB |
1324 | Since the latter lossage is more benign, we may as well |
1325 | lose that way. -- cph */ | |
1326 | #ifdef FIONBIO | |
5e617bc2 | 1327 | #if defined (UNIX98_PTYS) |
86a5659e JB |
1328 | { |
1329 | int on = 1; | |
1330 | ioctl (fd, FIONBIO, &on); | |
1331 | } | |
1332 | #endif | |
1333 | #endif | |
86a5659e JB |
1334 | } |
1335 | #endif /* HAVE_PTYS */ | |
1336 | \f | |
f8a80313 RS |
1337 | #ifdef HAVE_SOCKETS |
1338 | #include <sys/socket.h> | |
1339 | #include <netdb.h> | |
1340 | #endif /* HAVE_SOCKETS */ | |
f8a80313 | 1341 | |
8581cd64 KH |
1342 | #ifdef TRY_AGAIN |
1343 | #ifndef HAVE_H_ERRNO | |
1344 | extern int h_errno; | |
1345 | #endif | |
1346 | #endif /* TRY_AGAIN */ | |
1347 | ||
c0c86835 | 1348 | void |
971de7fb | 1349 | init_system_name (void) |
86a5659e | 1350 | { |
210b2b4f | 1351 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
1352 | struct utsname uts; |
1353 | uname (&uts); | |
1354 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 1355 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 1356 | unsigned int hostname_size = 256; |
38182d90 | 1357 | char *hostname = alloca (hostname_size); |
c0c86835 KH |
1358 | |
1359 | /* Try to get the host name; if the buffer is too short, try | |
1360 | again. Apparently, the only indication gethostname gives of | |
1361 | whether the buffer was large enough is the presence or absence | |
1362 | of a '\0' in the string. Eech. */ | |
1363 | for (;;) | |
1364 | { | |
1365 | gethostname (hostname, hostname_size - 1); | |
1366 | hostname[hostname_size - 1] = '\0'; | |
1367 | ||
1368 | /* Was the buffer large enough for the '\0'? */ | |
1369 | if (strlen (hostname) < hostname_size - 1) | |
1370 | break; | |
1371 | ||
1372 | hostname_size <<= 1; | |
38182d90 | 1373 | hostname = alloca (hostname_size); |
c0c86835 | 1374 | } |
67004ffb | 1375 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
1376 | /* Turn the hostname into the official, fully-qualified hostname. |
1377 | Don't do this if we're going to dump; this can confuse system | |
1378 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 1379 | #ifndef CANNOT_DUMP |
c0c86835 | 1380 | if (initialized) |
67004ffb | 1381 | #endif /* not CANNOT_DUMP */ |
8966b757 | 1382 | if (! strchr (hostname, '.')) |
960d894c | 1383 | { |
960d894c | 1384 | int count; |
3d66b985 JD |
1385 | #ifdef HAVE_GETADDRINFO |
1386 | struct addrinfo *res; | |
1387 | struct addrinfo hints; | |
1388 | int ret; | |
1389 | ||
cf84bb53 | 1390 | memset (&hints, 0, sizeof (hints)); |
3d66b985 JD |
1391 | hints.ai_socktype = SOCK_STREAM; |
1392 | hints.ai_flags = AI_CANONNAME; | |
1393 | ||
960d894c KH |
1394 | for (count = 0;; count++) |
1395 | { | |
3d66b985 JD |
1396 | if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0 |
1397 | || ret != EAI_AGAIN) | |
1398 | break; | |
1399 | ||
1400 | if (count >= 5) | |
1401 | break; | |
1402 | Fsleep_for (make_number (1), Qnil); | |
1403 | } | |
1404 | ||
1405 | if (ret == 0) | |
1406 | { | |
1407 | struct addrinfo *it = res; | |
1408 | while (it) | |
1409 | { | |
1410 | char *fqdn = it->ai_canonname; | |
8966b757 | 1411 | if (fqdn && strchr (fqdn, '.') |
3d66b985 JD |
1412 | && strcmp (fqdn, "localhost.localdomain") != 0) |
1413 | break; | |
1414 | it = it->ai_next; | |
1415 | } | |
1416 | if (it) | |
1417 | { | |
1418 | hostname = alloca (strlen (it->ai_canonname) + 1); | |
1419 | strcpy (hostname, it->ai_canonname); | |
1420 | } | |
1421 | freeaddrinfo (res); | |
1422 | } | |
1423 | #else /* !HAVE_GETADDRINFO */ | |
1424 | struct hostent *hp; | |
1425 | for (count = 0;; count++) | |
1426 | { | |
1427 | ||
e24f1d55 | 1428 | #ifdef TRY_AGAIN |
960d894c | 1429 | h_errno = 0; |
e24f1d55 | 1430 | #endif |
960d894c | 1431 | hp = gethostbyname (hostname); |
efa04277 | 1432 | #ifdef TRY_AGAIN |
960d894c KH |
1433 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
1434 | #endif | |
3d66b985 | 1435 | |
960d894c | 1436 | break; |
3d66b985 | 1437 | |
960d894c KH |
1438 | if (count >= 5) |
1439 | break; | |
1440 | Fsleep_for (make_number (1), Qnil); | |
1441 | } | |
3d66b985 | 1442 | |
960d894c KH |
1443 | if (hp) |
1444 | { | |
1445 | char *fqdn = (char *) hp->h_name; | |
960d894c | 1446 | |
8966b757 | 1447 | if (!strchr (fqdn, '.')) |
960d894c KH |
1448 | { |
1449 | /* We still don't have a fully qualified domain name. | |
1450 | Try to find one in the list of alternate names */ | |
1451 | char **alias = hp->h_aliases; | |
923721f4 | 1452 | while (*alias |
8966b757 | 1453 | && (!strchr (*alias, '.') |
923721f4 | 1454 | || !strcmp (*alias, "localhost.localdomain"))) |
960d894c KH |
1455 | alias++; |
1456 | if (*alias) | |
1457 | fqdn = *alias; | |
1458 | } | |
1459 | hostname = fqdn; | |
960d894c | 1460 | } |
3d66b985 | 1461 | #endif /* !HAVE_GETADDRINFO */ |
960d894c | 1462 | } |
67004ffb | 1463 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 1464 | Vsystem_name = build_string (hostname); |
67004ffb | 1465 | #endif /* HAVE_GETHOSTNAME */ |
c0c86835 KH |
1466 | { |
1467 | unsigned char *p; | |
d5db4077 | 1468 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
1469 | if (*p == ' ' || *p == '\t') |
1470 | *p = '-'; | |
1471 | } | |
67004ffb | 1472 | } |
86a5659e | 1473 | \f |
86a5659e JB |
1474 | /* POSIX signals support - DJB */ |
1475 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
1476 | ||
1fa53021 | 1477 | sigset_t empty_mask; |
86a5659e | 1478 | |
d6dae14b EZ |
1479 | #ifndef WINDOWSNT |
1480 | ||
86a5659e JB |
1481 | signal_handler_t |
1482 | sys_signal (int signal_number, signal_handler_t action) | |
1483 | { | |
c639b0e3 | 1484 | struct sigaction new_action, old_action; |
86a5659e | 1485 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 1486 | new_action.sa_handler = action; |
ef874e3d AS |
1487 | new_action.sa_flags = 0; |
1488 | #if defined (SA_RESTART) | |
25ab68af | 1489 | /* Emacs mostly works better with restartable system services. If this |
55fafcf0 | 1490 | flag exists, we probably want to turn it on here. |
41f9404e GM |
1491 | However, on some systems (only hpux11 at present) this resets the |
1492 | timeout of `select' which means that `select' never finishes if | |
1493 | it keeps getting signals. | |
1494 | We define BROKEN_SA_RESTART on those systems. */ | |
275464e7 SM |
1495 | /* It's not clear why the comment above says "mostly works better". --Stef |
1496 | When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll | |
1497 | for pending input so we need long-running syscalls to be interrupted | |
1498 | after a signal that sets the interrupt_input_pending flag. */ | |
766f52ec AS |
1499 | /* Non-interactive keyboard input goes through stdio, where we always |
1500 | want restartable system calls. */ | |
5e617bc2 | 1501 | # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT) |
ef874e3d AS |
1502 | if (noninteractive) |
1503 | # endif | |
1504 | new_action.sa_flags = SA_RESTART; | |
25ab68af | 1505 | #endif |
d32b2f3c | 1506 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 1507 | return (old_action.sa_handler); |
86a5659e JB |
1508 | } |
1509 | ||
d6dae14b EZ |
1510 | #endif /* WINDOWSNT */ |
1511 | ||
e065a56e JB |
1512 | #ifndef __GNUC__ |
1513 | /* If we're compiling with GCC, we don't need this function, since it | |
1514 | can be written as a macro. */ | |
1515 | sigset_t | |
1516 | sys_sigmask (int sig) | |
1517 | { | |
1518 | sigset_t mask; | |
1519 | sigemptyset (&mask); | |
1520 | sigaddset (&mask, sig); | |
1521 | return mask; | |
1522 | } | |
1523 | #endif | |
1524 | ||
86a5659e JB |
1525 | /* I'd like to have these guys return pointers to the mask storage in here, |
1526 | but there'd be trouble if the code was saving multiple masks. I'll be | |
1527 | safe and pass the structure. It normally won't be more than 2 bytes | |
1528 | anyhow. - DJB */ | |
1529 | ||
1530 | sigset_t | |
1531 | sys_sigblock (sigset_t new_mask) | |
1532 | { | |
1533 | sigset_t old_mask; | |
123403e4 | 1534 | pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask); |
86a5659e JB |
1535 | return (old_mask); |
1536 | } | |
1537 | ||
1538 | sigset_t | |
1539 | sys_sigunblock (sigset_t new_mask) | |
1540 | { | |
1541 | sigset_t old_mask; | |
123403e4 | 1542 | pthread_sigmask (SIG_UNBLOCK, &new_mask, &old_mask); |
86a5659e JB |
1543 | return (old_mask); |
1544 | } | |
1545 | ||
1546 | sigset_t | |
1547 | sys_sigsetmask (sigset_t new_mask) | |
1548 | { | |
1549 | sigset_t old_mask; | |
123403e4 | 1550 | pthread_sigmask (SIG_SETMASK, &new_mask, &old_mask); |
86a5659e JB |
1551 | return (old_mask); |
1552 | } | |
1553 | ||
20ef56db PE |
1554 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
1555 | pthread_t main_thread; | |
1556 | #endif | |
1557 | ||
1558 | /* If we are on the main thread, handle the signal SIG with HANDLER. | |
1559 | Otherwise, redirect the signal to the main thread, blocking it from | |
1560 | this thread. POSIX says any thread can receive a signal that is | |
1561 | associated with a process, process group, or asynchronous event. | |
1562 | On GNU/Linux that is not true, but for other systems (FreeBSD at | |
1563 | least) it is. */ | |
1564 | void | |
1565 | handle_on_main_thread (int sig, signal_handler_t handler) | |
1566 | { | |
1567 | /* Preserve errno, to avoid race conditions with signal handlers that | |
1568 | might change errno. Races can occur even in single-threaded hosts. */ | |
1569 | int old_errno = errno; | |
1570 | ||
1571 | bool on_main_thread = true; | |
1572 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD | |
1573 | if (! pthread_equal (pthread_self (), main_thread)) | |
1574 | { | |
1575 | sigset_t blocked; | |
1576 | sigemptyset (&blocked); | |
1577 | sigaddset (&blocked, sig); | |
1578 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
1579 | pthread_kill (main_thread, sig); | |
1580 | on_main_thread = false; | |
1581 | } | |
1582 | #endif | |
1583 | if (on_main_thread) | |
1584 | handler (sig); | |
1585 | ||
1586 | errno = old_errno; | |
1587 | } | |
86a5659e | 1588 | \f |
b80263be | 1589 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
1590 | static char *my_sys_siglist[NSIG]; |
1591 | # ifdef sys_siglist | |
1592 | # undef sys_siglist | |
1593 | # endif | |
1594 | # define sys_siglist my_sys_siglist | |
1595 | #endif | |
1596 | ||
1597 | void | |
971de7fb | 1598 | init_signals (void) |
ca9c0567 | 1599 | { |
ca9c0567 | 1600 | sigemptyset (&empty_mask); |
ca9c0567 | 1601 | |
20ef56db PE |
1602 | #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD |
1603 | main_thread = pthread_self (); | |
1604 | #endif | |
1605 | ||
b80263be | 1606 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
1607 | if (! initialized) |
1608 | { | |
1609 | # ifdef SIGABRT | |
1610 | sys_siglist[SIGABRT] = "Aborted"; | |
1611 | # endif | |
1612 | # ifdef SIGAIO | |
1613 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
1614 | # endif | |
1615 | # ifdef SIGALRM | |
1616 | sys_siglist[SIGALRM] = "Alarm clock"; | |
1617 | # endif | |
1618 | # ifdef SIGBUS | |
1619 | sys_siglist[SIGBUS] = "Bus error"; | |
1620 | # endif | |
1621 | # ifdef SIGCLD | |
1622 | sys_siglist[SIGCLD] = "Child status changed"; | |
1623 | # endif | |
1624 | # ifdef SIGCHLD | |
1625 | sys_siglist[SIGCHLD] = "Child status changed"; | |
1626 | # endif | |
1627 | # ifdef SIGCONT | |
1628 | sys_siglist[SIGCONT] = "Continued"; | |
1629 | # endif | |
1630 | # ifdef SIGDANGER | |
1631 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
1632 | # endif | |
1633 | # ifdef SIGDGNOTIFY | |
1634 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
1635 | # endif | |
1636 | # ifdef SIGEMT | |
1637 | sys_siglist[SIGEMT] = "Emulation trap"; | |
1638 | # endif | |
1639 | # ifdef SIGFPE | |
1640 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
1641 | # endif | |
1642 | # ifdef SIGFREEZE | |
1643 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
1644 | # endif | |
1645 | # ifdef SIGGRANT | |
1646 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
1647 | # endif | |
1648 | # ifdef SIGHUP | |
1649 | sys_siglist[SIGHUP] = "Hangup"; | |
1650 | # endif | |
1651 | # ifdef SIGILL | |
1652 | sys_siglist[SIGILL] = "Illegal instruction"; | |
1653 | # endif | |
1654 | # ifdef SIGINT | |
1655 | sys_siglist[SIGINT] = "Interrupt"; | |
1656 | # endif | |
1657 | # ifdef SIGIO | |
1658 | sys_siglist[SIGIO] = "I/O possible"; | |
1659 | # endif | |
1660 | # ifdef SIGIOINT | |
1661 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
1662 | # endif | |
1663 | # ifdef SIGIOT | |
1664 | sys_siglist[SIGIOT] = "IOT trap"; | |
1665 | # endif | |
1666 | # ifdef SIGKILL | |
1667 | sys_siglist[SIGKILL] = "Killed"; | |
1668 | # endif | |
1669 | # ifdef SIGLOST | |
1670 | sys_siglist[SIGLOST] = "Resource lost"; | |
1671 | # endif | |
1672 | # ifdef SIGLWP | |
1673 | sys_siglist[SIGLWP] = "SIGLWP"; | |
1674 | # endif | |
1675 | # ifdef SIGMSG | |
1676 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
1677 | # endif | |
1678 | # ifdef SIGPHONE | |
1679 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
1680 | # endif | |
1681 | # ifdef SIGPIPE | |
1682 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
1683 | # endif | |
1684 | # ifdef SIGPOLL | |
1685 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
1686 | # endif | |
1687 | # ifdef SIGPROF | |
1688 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
1689 | # endif | |
1690 | # ifdef SIGPTY | |
1691 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
1692 | # endif | |
1693 | # ifdef SIGPWR | |
1694 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
1695 | # endif | |
1696 | # ifdef SIGQUIT | |
1697 | sys_siglist[SIGQUIT] = "Quit"; | |
1698 | # endif | |
1699 | # ifdef SIGRETRACT | |
40ba43b4 | 1700 | sys_siglist[SIGRETRACT] = "Need to relinquish monitor mode"; |
ca9c0567 PE |
1701 | # endif |
1702 | # ifdef SIGSAK | |
1703 | sys_siglist[SIGSAK] = "Secure attention"; | |
1704 | # endif | |
1705 | # ifdef SIGSEGV | |
1706 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
1707 | # endif | |
1708 | # ifdef SIGSOUND | |
1709 | sys_siglist[SIGSOUND] = "Sound completed"; | |
1710 | # endif | |
1711 | # ifdef SIGSTOP | |
1712 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
1713 | # endif | |
1714 | # ifdef SIGSTP | |
1715 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
1716 | # endif | |
1717 | # ifdef SIGSYS | |
1718 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
1719 | # endif | |
1720 | # ifdef SIGTERM | |
1721 | sys_siglist[SIGTERM] = "Terminated"; | |
1722 | # endif | |
1723 | # ifdef SIGTHAW | |
1724 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
1725 | # endif | |
1726 | # ifdef SIGTRAP | |
1727 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
1728 | # endif | |
1729 | # ifdef SIGTSTP | |
1730 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
1731 | # endif | |
1732 | # ifdef SIGTTIN | |
1733 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
1734 | # endif | |
1735 | # ifdef SIGTTOU | |
1736 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
1737 | # endif | |
1738 | # ifdef SIGURG | |
1739 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
1740 | # endif | |
1741 | # ifdef SIGUSR1 | |
1742 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
1743 | # endif | |
1744 | # ifdef SIGUSR2 | |
1745 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
1746 | # endif | |
1747 | # ifdef SIGVTALRM | |
1748 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
1749 | # endif | |
1750 | # ifdef SIGWAITING | |
1751 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
1752 | # endif | |
1753 | # ifdef SIGWINCH | |
1754 | sys_siglist[SIGWINCH] = "Window size changed"; | |
1755 | # endif | |
1756 | # ifdef SIGWIND | |
1757 | sys_siglist[SIGWIND] = "SIGWIND"; | |
1758 | # endif | |
1759 | # ifdef SIGXCPU | |
1760 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
1761 | # endif | |
1762 | # ifdef SIGXFSZ | |
1763 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
1764 | # endif | |
1765 | } | |
b80263be | 1766 | #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */ |
ca9c0567 PE |
1767 | } |
1768 | \f | |
9927a7b1 | 1769 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
1770 | #ifdef random |
1771 | #define HAVE_RANDOM | |
1772 | #endif | |
1773 | #endif | |
1774 | ||
1775 | /* Figure out how many bits the system's random number generator uses. | |
1776 | `random' and `lrand48' are assumed to return 31 usable bits. | |
1777 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
1778 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
1779 | ||
1780 | #ifndef RAND_BITS | |
1781 | # ifdef HAVE_RANDOM | |
1782 | # define RAND_BITS 31 | |
1783 | # else /* !HAVE_RANDOM */ | |
1784 | # ifdef HAVE_LRAND48 | |
1785 | # define RAND_BITS 31 | |
1786 | # define random lrand48 | |
1787 | # else /* !HAVE_LRAND48 */ | |
1788 | # define RAND_BITS 15 | |
1789 | # if RAND_MAX == 32767 | |
1790 | # define random rand | |
1791 | # else /* RAND_MAX != 32767 */ | |
1792 | # if RAND_MAX == 2147483647 | |
1793 | # define random() (rand () >> 16) | |
1794 | # else /* RAND_MAX != 2147483647 */ | |
1795 | # ifdef USG | |
1796 | # define random rand | |
1797 | # else | |
1798 | # define random() (rand () >> 16) | |
2a633456 | 1799 | # endif /* !USG */ |
4bb8c8b7 KH |
1800 | # endif /* RAND_MAX != 2147483647 */ |
1801 | # endif /* RAND_MAX != 32767 */ | |
1802 | # endif /* !HAVE_LRAND48 */ | |
1803 | # endif /* !HAVE_RANDOM */ | |
1804 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 1805 | |
4bb8c8b7 | 1806 | void |
0e23ef9d | 1807 | seed_random (void *seed, ptrdiff_t seed_size) |
86a5659e | 1808 | { |
33634217 | 1809 | #if defined HAVE_RANDOM || ! defined HAVE_LRAND48 |
0e23ef9d PE |
1810 | unsigned int arg = 0; |
1811 | #else | |
1812 | long int arg = 0; | |
1813 | #endif | |
1814 | unsigned char *argp = (unsigned char *) &arg; | |
1815 | unsigned char *seedp = seed; | |
1816 | ptrdiff_t i; | |
1817 | for (i = 0; i < seed_size; i++) | |
1818 | argp[i % sizeof arg] ^= seedp[i]; | |
4bb8c8b7 | 1819 | #ifdef HAVE_RANDOM |
0e23ef9d | 1820 | srandom (arg); |
f8b53a82 | 1821 | #else |
4bb8c8b7 | 1822 | # ifdef HAVE_LRAND48 |
76425a49 | 1823 | srand48 (arg); |
4bb8c8b7 | 1824 | # else |
0e23ef9d | 1825 | srand (arg); |
4bb8c8b7 | 1826 | # endif |
2e46c7c6 | 1827 | #endif |
86a5659e JB |
1828 | } |
1829 | ||
0e23ef9d PE |
1830 | void |
1831 | init_random (void) | |
1832 | { | |
1833 | EMACS_TIME t = current_emacs_time (); | |
1834 | uintmax_t v = getpid () ^ EMACS_SECS (t) ^ EMACS_NSECS (t); | |
1835 | seed_random (&v, sizeof v); | |
1836 | } | |
1837 | ||
4bb8c8b7 | 1838 | /* |
d8ed26bd PE |
1839 | * Return a nonnegative random integer out of whatever we've got. |
1840 | * It contains enough bits to make a random (signed) Emacs fixnum. | |
4bb8c8b7 KH |
1841 | * This suffices even for a 64-bit architecture with a 15-bit rand. |
1842 | */ | |
ede49d71 | 1843 | EMACS_INT |
971de7fb | 1844 | get_random (void) |
4bb8c8b7 | 1845 | { |
ede49d71 PE |
1846 | EMACS_UINT val = 0; |
1847 | int i; | |
d8ed26bd PE |
1848 | for (i = 0; i < (FIXNUM_BITS + RAND_BITS - 1) / RAND_BITS; i++) |
1849 | val = (random () ^ (val << RAND_BITS) | |
1850 | ^ (val >> (BITS_PER_EMACS_INT - RAND_BITS))); | |
1851 | val ^= val >> (BITS_PER_EMACS_INT - FIXNUM_BITS); | |
1852 | return val & INTMASK; | |
4bb8c8b7 | 1853 | } |
7088d1ca | 1854 | |
55e5faa1 PE |
1855 | #ifndef HAVE_SNPRINTF |
1856 | /* Approximate snprintf as best we can on ancient hosts that lack it. */ | |
1857 | int | |
1858 | snprintf (char *buf, size_t bufsize, char const *format, ...) | |
1859 | { | |
1860 | ptrdiff_t size = min (bufsize, PTRDIFF_MAX); | |
1861 | ptrdiff_t nbytes = size - 1; | |
1862 | va_list ap; | |
1863 | ||
1864 | if (size) | |
1865 | { | |
1866 | va_start (ap, format); | |
1867 | nbytes = doprnt (buf, size, format, 0, ap); | |
1868 | va_end (ap); | |
1869 | } | |
1870 | ||
1871 | if (nbytes == size - 1) | |
1872 | { | |
1873 | /* Calculate the length of the string that would have been created | |
1874 | had the buffer been large enough. */ | |
1875 | char stackbuf[4000]; | |
1876 | char *b = stackbuf; | |
1877 | ptrdiff_t bsize = sizeof stackbuf; | |
1878 | va_start (ap, format); | |
1879 | nbytes = evxprintf (&b, &bsize, stackbuf, -1, format, ap); | |
1880 | va_end (ap); | |
1881 | if (b != stackbuf) | |
1882 | xfree (b); | |
1883 | } | |
1884 | ||
1885 | if (INT_MAX < nbytes) | |
1886 | { | |
31bed486 | 1887 | #ifdef EOVERFLOW |
55e5faa1 | 1888 | errno = EOVERFLOW; |
31bed486 EZ |
1889 | #else |
1890 | errno = EDOM; | |
1891 | #endif | |
55e5faa1 PE |
1892 | return -1; |
1893 | } | |
1894 | return nbytes; | |
1895 | } | |
1896 | #endif | |
86a5659e | 1897 | \f |
cf29dd84 PE |
1898 | /* If a backtrace is available, output the top lines of it to stderr. |
1899 | Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines. | |
1900 | This function may be called from a signal handler, so it should | |
1901 | not invoke async-unsafe functions like malloc. */ | |
1902 | void | |
1903 | emacs_backtrace (int backtrace_limit) | |
1904 | { | |
1905 | enum { BACKTRACE_LIMIT_MAX = 500 }; | |
1906 | void *buffer[BACKTRACE_LIMIT_MAX + 1]; | |
1907 | int bounded_limit = min (backtrace_limit, BACKTRACE_LIMIT_MAX); | |
1908 | int npointers = backtrace (buffer, bounded_limit + 1); | |
1909 | if (npointers) | |
1910 | ignore_value (write (STDERR_FILENO, "\nBacktrace:\n", 12)); | |
1911 | backtrace_symbols_fd (buffer, bounded_limit, STDERR_FILENO); | |
1912 | if (bounded_limit < npointers) | |
1913 | ignore_value (write (STDERR_FILENO, "...\n", 4)); | |
1914 | } | |
1915 | \f | |
1088b922 PE |
1916 | #ifndef HAVE_NTGUI |
1917 | /* Using emacs_abort lets GDB return from a breakpoint here. */ | |
1918 | void | |
1919 | emacs_abort (void) | |
1920 | { | |
cf29dd84 | 1921 | fatal_error_backtrace (SIGABRT, 10); |
1088b922 PE |
1922 | } |
1923 | #endif | |
1924 | ||
86a5659e | 1925 | int |
971de7fb | 1926 | emacs_open (const char *path, int oflag, int mode) |
86a5659e JB |
1927 | { |
1928 | register int rtnval; | |
68c45bf0 | 1929 | |
86a5659e | 1930 | while ((rtnval = open (path, oflag, mode)) == -1 |
275464e7 SM |
1931 | && (errno == EINTR)) |
1932 | QUIT; | |
86a5659e JB |
1933 | return (rtnval); |
1934 | } | |
1935 | ||
dfcf069d | 1936 | int |
971de7fb | 1937 | emacs_close (int fd) |
86a5659e | 1938 | { |
fe111daf | 1939 | int did_retry = 0; |
86a5659e JB |
1940 | register int rtnval; |
1941 | ||
1942 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
1943 | && (errno == EINTR)) |
1944 | did_retry = 1; | |
1945 | ||
1946 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
1947 | file descriptor. If it did the second close will fail with | |
1948 | errno = EBADF. That means we have succeeded. */ | |
1949 | if (rtnval == -1 && did_retry && errno == EBADF) | |
1950 | return 0; | |
1951 | ||
86a5659e JB |
1952 | return rtnval; |
1953 | } | |
1954 | ||
1963a2e0 PE |
1955 | /* Maximum number of bytes to read or write in a single system call. |
1956 | This works around a serious bug in Linux kernels before 2.6.16; see | |
1957 | <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>. | |
1958 | It's likely to work around similar bugs in other operating systems, so do it | |
1959 | on all platforms. Round INT_MAX down to a page size, with the conservative | |
1960 | assumption that page sizes are at most 2**18 bytes (any kernel with a | |
1961 | page size larger than that shouldn't have the bug). */ | |
1962 | #ifndef MAX_RW_COUNT | |
1963 | #define MAX_RW_COUNT (INT_MAX >> 18 << 18) | |
1964 | #endif | |
1965 | ||
273a5f82 PE |
1966 | /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted. |
1967 | Return the number of bytes read, which might be less than NBYTE. | |
1968 | On error, set errno and return -1. */ | |
d311d28c PE |
1969 | ptrdiff_t |
1970 | emacs_read (int fildes, char *buf, ptrdiff_t nbyte) | |
86a5659e | 1971 | { |
8a2cbd72 | 1972 | register ssize_t rtnval; |
177c0ea7 | 1973 | |
71b41406 PE |
1974 | /* There is no need to check against MAX_RW_COUNT, since no caller ever |
1975 | passes a size that large to emacs_read. */ | |
1976 | ||
1977 | while ((rtnval = read (fildes, buf, nbyte)) == -1 | |
275464e7 SM |
1978 | && (errno == EINTR)) |
1979 | QUIT; | |
86a5659e JB |
1980 | return (rtnval); |
1981 | } | |
1982 | ||
273a5f82 PE |
1983 | /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted |
1984 | or if a partial write occurs. Return the number of bytes written, setting | |
1985 | errno if this is less than NBYTE. */ | |
d311d28c PE |
1986 | ptrdiff_t |
1987 | emacs_write (int fildes, const char *buf, ptrdiff_t nbyte) | |
86a5659e | 1988 | { |
273a5f82 | 1989 | ssize_t rtnval; |
d311d28c | 1990 | ptrdiff_t bytes_written; |
28272684 | 1991 | |
b95520f5 BF |
1992 | bytes_written = 0; |
1993 | ||
273a5f82 | 1994 | while (nbyte > 0) |
b95520f5 | 1995 | { |
1963a2e0 | 1996 | rtnval = write (fildes, buf, min (nbyte, MAX_RW_COUNT)); |
b95520f5 | 1997 | |
273a5f82 | 1998 | if (rtnval < 0) |
b95520f5 BF |
1999 | { |
2000 | if (errno == EINTR) | |
77220eeb SM |
2001 | { |
2002 | #ifdef SYNC_INPUT | |
2003 | /* I originally used `QUIT' but that might causes files to | |
2004 | be truncated if you hit C-g in the middle of it. --Stef */ | |
55310b94 | 2005 | process_pending_signals (); |
77220eeb SM |
2006 | #endif |
2007 | continue; | |
2008 | } | |
b95520f5 | 2009 | else |
273a5f82 | 2010 | break; |
b95520f5 BF |
2011 | } |
2012 | ||
2013 | buf += rtnval; | |
2014 | nbyte -= rtnval; | |
2015 | bytes_written += rtnval; | |
2016 | } | |
273a5f82 | 2017 | |
b95520f5 | 2018 | return (bytes_written); |
86a5659e | 2019 | } |
d1fdcab7 PE |
2020 | |
2021 | static struct allocator const emacs_norealloc_allocator = | |
2022 | { xmalloc, NULL, xfree, memory_full }; | |
2023 | ||
2024 | /* Get the symbolic link value of FILENAME. Return a pointer to a | |
2025 | NUL-terminated string. If readlink fails, return NULL and set | |
2026 | errno. If the value fits in INITIAL_BUF, return INITIAL_BUF. | |
2027 | Otherwise, allocate memory and return a pointer to that memory. If | |
2028 | memory allocation fails, diagnose and fail without returning. If | |
2029 | successful, store the length of the symbolic link into *LINKLEN. */ | |
2030 | char * | |
2031 | emacs_readlink (char const *filename, char initial_buf[READLINK_BUFSIZE]) | |
2032 | { | |
2033 | return careadlinkat (AT_FDCWD, filename, initial_buf, READLINK_BUFSIZE, | |
2034 | &emacs_norealloc_allocator, careadlinkatcwd); | |
2035 | } | |
86a5659e JB |
2036 | \f |
2037 | #ifdef USG | |
2038 | /* | |
2039 | * All of the following are for USG. | |
2040 | * | |
2041 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2042 | * that the user program has elected to catch. Thus the system call | |
2043 | * must be retried in these cases. To handle this without massive | |
2044 | * changes in the source code, we remap the standard system call names | |
2045 | * to names for our own functions in sysdep.c that do the system call | |
2046 | * with retries. Actually, for portability reasons, it is good | |
2047 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2048 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2049 | * adds an extra level of function call overhead but it is almost |
2050 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2051 | */ | |
2052 | ||
86a5659e JB |
2053 | /* |
2054 | * Warning, this function may not duplicate 4.2 action properly | |
2055 | * under error conditions. | |
2056 | */ | |
2057 | ||
1db4583a | 2058 | #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD) |
15dfd3d9 | 2059 | |
86a5659e JB |
2060 | #ifndef MAXPATHLEN |
2061 | /* In 4.1, param.h fails to define this. */ | |
2062 | #define MAXPATHLEN 1024 | |
2063 | #endif | |
2064 | ||
86a5659e | 2065 | char * |
cf84bb53 | 2066 | getwd (char *pathname) |
86a5659e JB |
2067 | { |
2068 | char *npath, *spath; | |
cf84bb53 | 2069 | extern char *getcwd (char *, size_t); |
86a5659e | 2070 | |
9ac0d9e0 | 2071 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 2072 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 2073 | if (spath == 0) |
18b6bc73 GM |
2074 | { |
2075 | UNBLOCK_INPUT; | |
2076 | return spath; | |
2077 | } | |
86a5659e JB |
2078 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
2079 | up to first slash. Should be harmless on other systems. */ | |
2080 | while (*npath && *npath != '/') | |
2081 | npath++; | |
2082 | strcpy (pathname, npath); | |
2083 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2084 | UNBLOCK_INPUT; |
86a5659e JB |
2085 | return pathname; |
2086 | } | |
2087 | ||
1db4583a | 2088 | #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */ |
86a5659e | 2089 | |
86a5659e JB |
2090 | /* |
2091 | * This function will go away as soon as all the stubs fixed. (fnf) | |
2092 | */ | |
2093 | ||
dfcf069d | 2094 | void |
971de7fb | 2095 | croak (char *badfunc) |
86a5659e JB |
2096 | { |
2097 | printf ("%s not yet implemented\r\n", badfunc); | |
28d440ab | 2098 | reset_all_sys_modes (); |
86a5659e JB |
2099 | exit (1); |
2100 | } | |
2101 | ||
2102 | #endif /* USG */ | |
2103 | \f | |
86a5659e JB |
2104 | /* Directory routines for systems that don't have them. */ |
2105 | ||
1c97e857 | 2106 | #ifdef HAVE_DIRENT_H |
86a5659e JB |
2107 | |
2108 | #include <dirent.h> | |
2109 | ||
9d9a7716 | 2110 | #if !defined (HAVE_CLOSEDIR) |
cfdc57af | 2111 | |
86a5659e | 2112 | int |
9d9a7716 | 2113 | closedir (DIR *dirp /* stream from opendir */) |
86a5659e | 2114 | { |
cfdc57af RS |
2115 | int rtnval; |
2116 | ||
68c45bf0 | 2117 | rtnval = emacs_close (dirp->dd_fd); |
98c6f1e3 | 2118 | xfree (dirp); |
cfdc57af RS |
2119 | |
2120 | return rtnval; | |
86a5659e | 2121 | } |
9d9a7716 | 2122 | #endif /* not HAVE_CLOSEDIR */ |
1c97e857 | 2123 | #endif /* HAVE_DIRENT_H */ |
86a5659e | 2124 | |
23524fb9 | 2125 | \f |
d35af63c PE |
2126 | /* Return a struct timeval that is roughly equivalent to T. |
2127 | Use the least timeval not less than T. | |
2128 | Return an extremal value if the result would overflow. */ | |
2129 | struct timeval | |
2130 | make_timeval (EMACS_TIME t) | |
2131 | { | |
2132 | struct timeval tv; | |
2133 | tv.tv_sec = t.tv_sec; | |
2134 | tv.tv_usec = t.tv_nsec / 1000; | |
2135 | ||
2136 | if (t.tv_nsec % 1000 != 0) | |
2137 | { | |
2138 | if (tv.tv_usec < 999999) | |
2139 | tv.tv_usec++; | |
2140 | else if (tv.tv_sec < TYPE_MAXIMUM (time_t)) | |
2141 | { | |
2142 | tv.tv_sec++; | |
2143 | tv.tv_usec = 0; | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | return tv; | |
2148 | } | |
2149 | ||
2150 | /* Set the access and modification time stamps of FD (a.k.a. FILE) to be | |
2151 | ATIME and MTIME, respectively. | |
2152 | FD must be either negative -- in which case it is ignored -- | |
2153 | or a file descriptor that is open on FILE. | |
2154 | If FD is nonnegative, then FILE can be NULL. */ | |
53ea491a | 2155 | int |
d35af63c PE |
2156 | set_file_times (int fd, const char *filename, |
2157 | EMACS_TIME atime, EMACS_TIME mtime) | |
2158 | { | |
2159 | struct timespec timespec[2]; | |
2160 | timespec[0] = atime; | |
2161 | timespec[1] = mtime; | |
2162 | return fdutimens (fd, filename, timespec); | |
53ea491a KH |
2163 | } |
2164 | \f | |
68c45bf0 PE |
2165 | #ifndef HAVE_STRSIGNAL |
2166 | char * | |
cf84bb53 | 2167 | strsignal (int code) |
68c45bf0 PE |
2168 | { |
2169 | char *signame = 0; | |
2170 | ||
2171 | if (0 <= code && code < NSIG) | |
2172 | { | |
68c45bf0 PE |
2173 | /* Cast to suppress warning if the table has const char *. */ |
2174 | signame = (char *) sys_siglist[code]; | |
68c45bf0 | 2175 | } |
c4ea52a6 | 2176 | |
68c45bf0 PE |
2177 | return signame; |
2178 | } | |
2179 | #endif /* HAVE_STRSIGNAL */ | |
d888760c | 2180 | \f |
a7ebc409 | 2181 | #ifndef DOS_NT |
d888760c | 2182 | /* For make-serial-process */ |
cf84bb53 JB |
2183 | int |
2184 | serial_open (char *port) | |
d888760c GM |
2185 | { |
2186 | int fd = -1; | |
2187 | ||
2188 | fd = emacs_open ((char*) port, | |
2189 | O_RDWR | |
2190 | #ifdef O_NONBLOCK | |
2191 | | O_NONBLOCK | |
2192 | #else | |
2193 | | O_NDELAY | |
2194 | #endif | |
2195 | #ifdef O_NOCTTY | |
2196 | | O_NOCTTY | |
2197 | #endif | |
2198 | , 0); | |
2199 | if (fd < 0) | |
2200 | { | |
2201 | error ("Could not open %s: %s", | |
2202 | port, emacs_strerror (errno)); | |
2203 | } | |
2204 | #ifdef TIOCEXCL | |
2205 | ioctl (fd, TIOCEXCL, (char *) 0); | |
2206 | #endif | |
2207 | ||
2208 | return fd; | |
2209 | } | |
759d3f32 SM |
2210 | |
2211 | #if !defined (HAVE_CFMAKERAW) | |
2212 | /* Workaround for targets which are missing cfmakeraw. */ | |
2213 | /* Pasted from man page. */ | |
cf84bb53 JB |
2214 | static void |
2215 | cfmakeraw (struct termios *termios_p) | |
759d3f32 SM |
2216 | { |
2217 | termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
2218 | termios_p->c_oflag &= ~OPOST; | |
2219 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
2220 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
2221 | termios_p->c_cflag |= CS8; | |
2222 | } | |
2223 | #endif /* !defined (HAVE_CFMAKERAW */ | |
2224 | ||
2225 | #if !defined (HAVE_CFSETSPEED) | |
2226 | /* Workaround for targets which are missing cfsetspeed. */ | |
cf84bb53 JB |
2227 | static int |
2228 | cfsetspeed (struct termios *termios_p, speed_t vitesse) | |
759d3f32 SM |
2229 | { |
2230 | return (cfsetispeed (termios_p, vitesse) | |
2231 | + cfsetospeed (termios_p, vitesse)); | |
2232 | } | |
2233 | #endif | |
2234 | ||
d888760c GM |
2235 | /* For serial-process-configure */ |
2236 | void | |
2237 | serial_configure (struct Lisp_Process *p, | |
cf84bb53 | 2238 | Lisp_Object contact) |
d888760c GM |
2239 | { |
2240 | Lisp_Object childp2 = Qnil; | |
2241 | Lisp_Object tem = Qnil; | |
2242 | struct termios attr; | |
2243 | int err = -1; | |
2244 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
2245 | ||
4d2b044c | 2246 | childp2 = Fcopy_sequence (p->childp); |
d888760c GM |
2247 | |
2248 | /* Read port attributes and prepare default configuration. */ | |
2249 | err = tcgetattr (p->outfd, &attr); | |
2250 | if (err != 0) | |
2251 | error ("tcgetattr() failed: %s", emacs_strerror (errno)); | |
2252 | cfmakeraw (&attr); | |
2253 | #if defined (CLOCAL) | |
2254 | attr.c_cflag |= CLOCAL; | |
2255 | #endif | |
2256 | #if defined (CREAD) | |
6d1921be | 2257 | attr.c_cflag |= CREAD; |
d888760c GM |
2258 | #endif |
2259 | ||
2260 | /* Configure speed. */ | |
2261 | if (!NILP (Fplist_member (contact, QCspeed))) | |
2262 | tem = Fplist_get (contact, QCspeed); | |
2263 | else | |
4d2b044c | 2264 | tem = Fplist_get (p->childp, QCspeed); |
d888760c GM |
2265 | CHECK_NUMBER (tem); |
2266 | err = cfsetspeed (&attr, XINT (tem)); | |
2267 | if (err != 0) | |
c2982e87 | 2268 | error ("cfsetspeed(%"pI"d) failed: %s", XINT (tem), |
5fdb398c | 2269 | emacs_strerror (errno)); |
d888760c GM |
2270 | childp2 = Fplist_put (childp2, QCspeed, tem); |
2271 | ||
2272 | /* Configure bytesize. */ | |
2273 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
2274 | tem = Fplist_get (contact, QCbytesize); | |
2275 | else | |
4d2b044c | 2276 | tem = Fplist_get (p->childp, QCbytesize); |
d888760c GM |
2277 | if (NILP (tem)) |
2278 | tem = make_number (8); | |
2279 | CHECK_NUMBER (tem); | |
2280 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
2281 | error (":bytesize must be nil (8), 7, or 8"); | |
cf84bb53 | 2282 | summary[0] = XINT (tem) + '0'; |
d888760c GM |
2283 | #if defined (CSIZE) && defined (CS7) && defined (CS8) |
2284 | attr.c_cflag &= ~CSIZE; | |
2285 | attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8); | |
2286 | #else | |
16bad4dd | 2287 | /* Don't error on bytesize 8, which should be set by cfmakeraw. */ |
d888760c GM |
2288 | if (XINT (tem) != 8) |
2289 | error ("Bytesize cannot be changed"); | |
2290 | #endif | |
2291 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
2292 | ||
2293 | /* Configure parity. */ | |
2294 | if (!NILP (Fplist_member (contact, QCparity))) | |
2295 | tem = Fplist_get (contact, QCparity); | |
2296 | else | |
4d2b044c | 2297 | tem = Fplist_get (p->childp, QCparity); |
d888760c GM |
2298 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) |
2299 | error (":parity must be nil (no parity), `even', or `odd'"); | |
2300 | #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK) | |
2301 | attr.c_cflag &= ~(PARENB | PARODD); | |
2302 | attr.c_iflag &= ~(IGNPAR | INPCK); | |
2303 | if (NILP (tem)) | |
2304 | { | |
2305 | summary[1] = 'N'; | |
2306 | } | |
2307 | else if (EQ (tem, Qeven)) | |
2308 | { | |
2309 | summary[1] = 'E'; | |
2310 | attr.c_cflag |= PARENB; | |
2311 | attr.c_iflag |= (IGNPAR | INPCK); | |
2312 | } | |
2313 | else if (EQ (tem, Qodd)) | |
2314 | { | |
2315 | summary[1] = 'O'; | |
2316 | attr.c_cflag |= (PARENB | PARODD); | |
2317 | attr.c_iflag |= (IGNPAR | INPCK); | |
2318 | } | |
2319 | #else | |
16bad4dd | 2320 | /* Don't error on no parity, which should be set by cfmakeraw. */ |
d888760c GM |
2321 | if (!NILP (tem)) |
2322 | error ("Parity cannot be configured"); | |
2323 | #endif | |
2324 | childp2 = Fplist_put (childp2, QCparity, tem); | |
2325 | ||
2326 | /* Configure stopbits. */ | |
2327 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
2328 | tem = Fplist_get (contact, QCstopbits); | |
2329 | else | |
4d2b044c | 2330 | tem = Fplist_get (p->childp, QCstopbits); |
d888760c GM |
2331 | if (NILP (tem)) |
2332 | tem = make_number (1); | |
2333 | CHECK_NUMBER (tem); | |
2334 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
2335 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
2336 | summary[2] = XINT (tem) + '0'; | |
2337 | #if defined (CSTOPB) | |
2338 | attr.c_cflag &= ~CSTOPB; | |
2339 | if (XINT (tem) == 2) | |
2340 | attr.c_cflag |= CSTOPB; | |
2341 | #else | |
16bad4dd | 2342 | /* Don't error on 1 stopbit, which should be set by cfmakeraw. */ |
d888760c GM |
2343 | if (XINT (tem) != 1) |
2344 | error ("Stopbits cannot be configured"); | |
2345 | #endif | |
2346 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
2347 | ||
2348 | /* Configure flowcontrol. */ | |
2349 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
2350 | tem = Fplist_get (contact, QCflowcontrol); | |
2351 | else | |
4d2b044c | 2352 | tem = Fplist_get (p->childp, QCflowcontrol); |
d888760c GM |
2353 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) |
2354 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
2355 | #if defined (CRTSCTS) | |
2356 | attr.c_cflag &= ~CRTSCTS; | |
2357 | #endif | |
2358 | #if defined (CNEW_RTSCTS) | |
2359 | attr.c_cflag &= ~CNEW_RTSCTS; | |
2360 | #endif | |
2361 | #if defined (IXON) && defined (IXOFF) | |
2362 | attr.c_iflag &= ~(IXON | IXOFF); | |
2363 | #endif | |
2364 | if (NILP (tem)) | |
2365 | { | |
2366 | /* Already configured. */ | |
2367 | } | |
2368 | else if (EQ (tem, Qhw)) | |
2369 | { | |
2370 | #if defined (CRTSCTS) | |
2371 | attr.c_cflag |= CRTSCTS; | |
2372 | #elif defined (CNEW_RTSCTS) | |
2373 | attr.c_cflag |= CNEW_RTSCTS; | |
2374 | #else | |
2375 | error ("Hardware flowcontrol (RTS/CTS) not supported"); | |
2376 | #endif | |
2377 | } | |
2378 | else if (EQ (tem, Qsw)) | |
2379 | { | |
2380 | #if defined (IXON) && defined (IXOFF) | |
2381 | attr.c_iflag |= (IXON | IXOFF); | |
2382 | #else | |
2383 | error ("Software flowcontrol (XON/XOFF) not supported"); | |
2384 | #endif | |
2385 | } | |
2386 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
2387 | ||
2388 | /* Activate configuration. */ | |
2389 | err = tcsetattr (p->outfd, TCSANOW, &attr); | |
2390 | if (err != 0) | |
2391 | error ("tcsetattr() failed: %s", emacs_strerror (errno)); | |
2392 | ||
2393 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6a09a33b | 2394 | pset_childp (p, childp2); |
d888760c | 2395 | } |
a7ebc409 | 2396 | #endif /* not DOS_NT */ |
06e111a6 DN |
2397 | \f |
2398 | /* System depended enumeration of and access to system processes a-la ps(1). */ | |
2399 | ||
2400 | #ifdef HAVE_PROCFS | |
2401 | ||
2402 | /* Process enumeration and access via /proc. */ | |
2403 | ||
2404 | Lisp_Object | |
971de7fb | 2405 | list_system_processes (void) |
06e111a6 DN |
2406 | { |
2407 | Lisp_Object procdir, match, proclist, next; | |
2408 | struct gcpro gcpro1, gcpro2; | |
2409 | register Lisp_Object tail; | |
2410 | ||
2411 | GCPRO2 (procdir, match); | |
2412 | /* For every process on the system, there's a directory in the | |
2413 | "/proc" pseudo-directory whose name is the numeric ID of that | |
2414 | process. */ | |
2415 | procdir = build_string ("/proc"); | |
2416 | match = build_string ("[0-9]+"); | |
2417 | proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil); | |
2418 | ||
2419 | /* `proclist' gives process IDs as strings. Destructively convert | |
2420 | each string into a number. */ | |
2421 | for (tail = proclist; CONSP (tail); tail = next) | |
2422 | { | |
2423 | next = XCDR (tail); | |
2424 | XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil)); | |
2425 | } | |
2426 | UNGCPRO; | |
2427 | ||
2428 | /* directory_files_internal returns the files in reverse order; undo | |
2429 | that. */ | |
2430 | proclist = Fnreverse (proclist); | |
2431 | return proclist; | |
2432 | } | |
2433 | ||
f01769f9 | 2434 | #elif defined BSD_SYSTEM |
b91b7e4d EW |
2435 | |
2436 | Lisp_Object | |
5790543d | 2437 | list_system_processes (void) |
b91b7e4d | 2438 | { |
f3047c75 | 2439 | #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__ |
f01769f9 LL |
2440 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL}; |
2441 | #else | |
b91b7e4d | 2442 | int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PROC}; |
f01769f9 | 2443 | #endif |
b91b7e4d EW |
2444 | size_t len; |
2445 | struct kinfo_proc *procs; | |
2446 | size_t i; | |
2447 | ||
2448 | struct gcpro gcpro1; | |
2449 | Lisp_Object proclist = Qnil; | |
2450 | ||
2451 | if (sysctl (mib, 3, NULL, &len, NULL, 0) != 0) | |
2452 | return proclist; | |
5790543d | 2453 | |
b91b7e4d EW |
2454 | procs = xmalloc (len); |
2455 | if (sysctl (mib, 3, procs, &len, NULL, 0) != 0) | |
2456 | { | |
2457 | xfree (procs); | |
2458 | return proclist; | |
2459 | } | |
5790543d | 2460 | |
b91b7e4d EW |
2461 | GCPRO1 (proclist); |
2462 | len /= sizeof (struct kinfo_proc); | |
2463 | for (i = 0; i < len; i++) | |
f01769f9 | 2464 | { |
f3047c75 | 2465 | #if defined DARWIN_OS || defined __NetBSD__ |
f01769f9 | 2466 | proclist = Fcons (make_fixnum_or_float (procs[i].kp_proc.p_pid), proclist); |
7dca65a4 PE |
2467 | #elif defined __OpenBSD__ |
2468 | proclist = Fcons (make_fixnum_or_float (procs[i].p_pid), proclist); | |
f01769f9 LL |
2469 | #else |
2470 | proclist = Fcons (make_fixnum_or_float (procs[i].ki_pid), proclist); | |
2471 | #endif | |
2472 | } | |
b91b7e4d | 2473 | UNGCPRO; |
5790543d | 2474 | |
b91b7e4d EW |
2475 | xfree (procs); |
2476 | ||
2477 | return proclist; | |
2478 | } | |
2479 | ||
f8d23104 DN |
2480 | /* The WINDOWSNT implementation is in w32.c. |
2481 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 2482 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
2483 | |
2484 | Lisp_Object | |
cf84bb53 | 2485 | list_system_processes (void) |
06e111a6 DN |
2486 | { |
2487 | return Qnil; | |
2488 | } | |
91c85b70 EZ |
2489 | |
2490 | #endif /* !defined (WINDOWSNT) */ | |
06e111a6 DN |
2491 | |
2492 | #ifdef GNU_LINUX | |
d35af63c PE |
2493 | static EMACS_TIME |
2494 | time_from_jiffies (unsigned long long tval, long hz) | |
2495 | { | |
2496 | unsigned long long s = tval / hz; | |
2497 | unsigned long long frac = tval % hz; | |
2498 | int ns; | |
d35af63c PE |
2499 | |
2500 | if (TYPE_MAXIMUM (time_t) < s) | |
2501 | time_overflow (); | |
2502 | if (LONG_MAX - 1 <= ULLONG_MAX / EMACS_TIME_RESOLUTION | |
2503 | || frac <= ULLONG_MAX / EMACS_TIME_RESOLUTION) | |
2504 | ns = frac * EMACS_TIME_RESOLUTION / hz; | |
06e111a6 | 2505 | else |
d35af63c PE |
2506 | { |
2507 | /* This is reachable only in the unlikely case that HZ * HZ | |
2508 | exceeds ULLONG_MAX. It calculates an approximation that is | |
2509 | guaranteed to be in range. */ | |
2510 | long hz_per_ns = (hz / EMACS_TIME_RESOLUTION | |
2511 | + (hz % EMACS_TIME_RESOLUTION != 0)); | |
2512 | ns = frac / hz_per_ns; | |
2513 | } | |
2514 | ||
e9a9ae03 | 2515 | return make_emacs_time (s, ns); |
06e111a6 DN |
2516 | } |
2517 | ||
2518 | static Lisp_Object | |
2519 | ltime_from_jiffies (unsigned long long tval, long hz) | |
2520 | { | |
d35af63c PE |
2521 | EMACS_TIME t = time_from_jiffies (tval, hz); |
2522 | return make_lisp_time (t); | |
06e111a6 DN |
2523 | } |
2524 | ||
d35af63c PE |
2525 | static EMACS_TIME |
2526 | get_up_time (void) | |
06e111a6 DN |
2527 | { |
2528 | FILE *fup; | |
e9a9ae03 | 2529 | EMACS_TIME up = make_emacs_time (0, 0); |
06e111a6 DN |
2530 | |
2531 | BLOCK_INPUT; | |
2532 | fup = fopen ("/proc/uptime", "r"); | |
2533 | ||
2534 | if (fup) | |
2535 | { | |
d35af63c PE |
2536 | unsigned long long upsec, upfrac, idlesec, idlefrac; |
2537 | int upfrac_start, upfrac_end, idlefrac_start, idlefrac_end; | |
06e111a6 | 2538 | |
d35af63c PE |
2539 | if (fscanf (fup, "%llu.%n%llu%n %llu.%n%llu%n", |
2540 | &upsec, &upfrac_start, &upfrac, &upfrac_end, | |
2541 | &idlesec, &idlefrac_start, &idlefrac, &idlefrac_end) | |
2542 | == 4) | |
06e111a6 | 2543 | { |
d35af63c PE |
2544 | if (TYPE_MAXIMUM (time_t) < upsec) |
2545 | { | |
2546 | upsec = TYPE_MAXIMUM (time_t); | |
2547 | upfrac = EMACS_TIME_RESOLUTION - 1; | |
2548 | } | |
2549 | else | |
2550 | { | |
2551 | int upfraclen = upfrac_end - upfrac_start; | |
2552 | for (; upfraclen < LOG10_EMACS_TIME_RESOLUTION; upfraclen++) | |
2553 | upfrac *= 10; | |
2554 | for (; LOG10_EMACS_TIME_RESOLUTION < upfraclen; upfraclen--) | |
2555 | upfrac /= 10; | |
2556 | upfrac = min (upfrac, EMACS_TIME_RESOLUTION - 1); | |
2557 | } | |
e9a9ae03 | 2558 | up = make_emacs_time (upsec, upfrac); |
06e111a6 DN |
2559 | } |
2560 | fclose (fup); | |
2561 | } | |
2562 | UNBLOCK_INPUT; | |
d35af63c PE |
2563 | |
2564 | return up; | |
06e111a6 DN |
2565 | } |
2566 | ||
2567 | #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff) | |
2568 | #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12)) | |
2569 | ||
2570 | static Lisp_Object | |
f4f634e8 | 2571 | procfs_ttyname (int rdev) |
06e111a6 DN |
2572 | { |
2573 | FILE *fdev = NULL; | |
2574 | char name[PATH_MAX]; | |
2575 | ||
2576 | BLOCK_INPUT; | |
2577 | fdev = fopen ("/proc/tty/drivers", "r"); | |
2578 | ||
2579 | if (fdev) | |
2580 | { | |
2581 | unsigned major; | |
2582 | unsigned long minor_beg, minor_end; | |
2583 | char minor[25]; /* 2 32-bit numbers + dash */ | |
2584 | char *endp; | |
2585 | ||
2586 | while (!feof (fdev) && !ferror (fdev)) | |
2587 | { | |
2588 | if (3 <= fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor) | |
2589 | && major == MAJOR (rdev)) | |
2590 | { | |
2591 | minor_beg = strtoul (minor, &endp, 0); | |
2592 | if (*endp == '\0') | |
2593 | minor_end = minor_beg; | |
2594 | else if (*endp == '-') | |
2595 | minor_end = strtoul (endp + 1, &endp, 0); | |
2596 | else | |
2597 | continue; | |
2598 | ||
2599 | if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end) | |
2600 | { | |
10d66ec0 | 2601 | sprintf (name + strlen (name), "%u", MINOR (rdev)); |
06e111a6 DN |
2602 | break; |
2603 | } | |
2604 | } | |
2605 | } | |
2606 | fclose (fdev); | |
2607 | } | |
2608 | UNBLOCK_INPUT; | |
2609 | return build_string (name); | |
2610 | } | |
2611 | ||
2612 | static unsigned long | |
2613 | procfs_get_total_memory (void) | |
2614 | { | |
2615 | FILE *fmem = NULL; | |
2616 | unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */ | |
2617 | ||
2618 | BLOCK_INPUT; | |
2619 | fmem = fopen ("/proc/meminfo", "r"); | |
2620 | ||
2621 | if (fmem) | |
2622 | { | |
2623 | unsigned long entry_value; | |
2624 | char entry_name[20]; /* the longest I saw is 13+1 */ | |
2625 | ||
2626 | while (!feof (fmem) && !ferror (fmem)) | |
2627 | { | |
2628 | if (2 <= fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value) | |
2629 | && strcmp (entry_name, "MemTotal:") == 0) | |
2630 | { | |
2631 | retval = entry_value; | |
2632 | break; | |
2633 | } | |
2634 | } | |
2635 | fclose (fmem); | |
2636 | } | |
2637 | UNBLOCK_INPUT; | |
2638 | return retval; | |
2639 | } | |
2640 | ||
2641 | Lisp_Object | |
f4f634e8 | 2642 | system_process_attributes (Lisp_Object pid) |
06e111a6 DN |
2643 | { |
2644 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
2645 | struct stat st; | |
2646 | struct passwd *pw; | |
2647 | struct group *gr; | |
2648 | long clocks_per_sec; | |
2649 | char *procfn_end; | |
2650 | char procbuf[1025], *p, *q; | |
2651 | int fd; | |
2652 | ssize_t nread; | |
e99a530f PE |
2653 | static char const default_cmd[] = "???"; |
2654 | const char *cmd = default_cmd; | |
2655 | int cmdsize = sizeof default_cmd - 1; | |
06e111a6 | 2656 | char *cmdline = NULL; |
e99a530f | 2657 | ptrdiff_t cmdline_size; |
06e111a6 | 2658 | unsigned char c; |
d311d28c PE |
2659 | printmax_t proc_id; |
2660 | int ppid, pgrp, sess, tty, tpgid, thcount; | |
2661 | uid_t uid; | |
2662 | gid_t gid; | |
a70072c9 PE |
2663 | unsigned long long u_time, s_time, cutime, cstime, start; |
2664 | long priority, niceness, rss; | |
06e111a6 | 2665 | unsigned long minflt, majflt, cminflt, cmajflt, vsize; |
d35af63c | 2666 | EMACS_TIME tnow, tstart, tboot, telapsed, us_time; |
06e111a6 DN |
2667 | double pcpu, pmem; |
2668 | Lisp_Object attrs = Qnil; | |
2669 | Lisp_Object cmd_str, decoded_cmd, tem; | |
2670 | struct gcpro gcpro1, gcpro2; | |
06e111a6 DN |
2671 | |
2672 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 2673 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 2674 | sprintf (procfn, "/proc/%"pMd, proc_id); |
06e111a6 DN |
2675 | if (stat (procfn, &st) < 0) |
2676 | return attrs; | |
2677 | ||
2678 | GCPRO2 (attrs, decoded_cmd); | |
2679 | ||
2680 | /* euid egid */ | |
2681 | uid = st.st_uid; | |
d311d28c | 2682 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
06e111a6 DN |
2683 | BLOCK_INPUT; |
2684 | pw = getpwuid (uid); | |
2685 | UNBLOCK_INPUT; | |
2686 | if (pw) | |
2687 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
2688 | ||
2689 | gid = st.st_gid; | |
d311d28c | 2690 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
06e111a6 DN |
2691 | BLOCK_INPUT; |
2692 | gr = getgrgid (gid); | |
2693 | UNBLOCK_INPUT; | |
2694 | if (gr) | |
2695 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
2696 | ||
2697 | strcpy (fn, procfn); | |
2698 | procfn_end = fn + strlen (fn); | |
2699 | strcpy (procfn_end, "/stat"); | |
2700 | fd = emacs_open (fn, O_RDONLY, 0); | |
cf84bb53 | 2701 | if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof (procbuf) - 1)) > 0) |
06e111a6 DN |
2702 | { |
2703 | procbuf[nread] = '\0'; | |
2704 | p = procbuf; | |
2705 | ||
2706 | p = strchr (p, '('); | |
2707 | if (p != NULL) | |
2708 | { | |
2709 | q = strrchr (p + 1, ')'); | |
2710 | /* comm */ | |
2711 | if (q != NULL) | |
2712 | { | |
2713 | cmd = p + 1; | |
2714 | cmdsize = q - cmd; | |
2715 | } | |
2716 | } | |
2717 | else | |
2718 | q = NULL; | |
06e111a6 DN |
2719 | /* Command name is encoded in locale-coding-system; decode it. */ |
2720 | cmd_str = make_unibyte_string (cmd, cmdsize); | |
2721 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
2722 | Vlocale_coding_system, 0); | |
2723 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
2724 | ||
2725 | if (q) | |
2726 | { | |
2727 | EMACS_INT ppid_eint, pgrp_eint, sess_eint, tpgid_eint, thcount_eint; | |
2728 | p = q + 2; | |
2729 | /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */ | |
2730 | sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld", | |
2731 | &c, &ppid, &pgrp, &sess, &tty, &tpgid, | |
2732 | &minflt, &cminflt, &majflt, &cmajflt, | |
a70072c9 PE |
2733 | &u_time, &s_time, &cutime, &cstime, |
2734 | &priority, &niceness, &thcount, &start, &vsize, &rss); | |
06e111a6 DN |
2735 | { |
2736 | char state_str[2]; | |
2737 | ||
2738 | state_str[0] = c; | |
2739 | state_str[1] = '\0'; | |
2740 | tem = build_string (state_str); | |
2741 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
2742 | } | |
2743 | /* Stops GCC whining about limited range of data type. */ | |
2744 | ppid_eint = ppid; | |
2745 | pgrp_eint = pgrp; | |
2746 | sess_eint = sess; | |
2747 | tpgid_eint = tpgid; | |
2748 | thcount_eint = thcount; | |
2749 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid_eint)), attrs); | |
2750 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp_eint)), attrs); | |
2751 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess_eint)), attrs); | |
2752 | attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs); | |
2753 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid_eint)), attrs); | |
2754 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs); | |
2755 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs); | |
2756 | attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), attrs); | |
2757 | attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), attrs); | |
2758 | clocks_per_sec = sysconf (_SC_CLK_TCK); | |
2759 | if (clocks_per_sec < 0) | |
2760 | clocks_per_sec = 100; | |
2761 | attrs = Fcons (Fcons (Qutime, | |
a70072c9 | 2762 | ltime_from_jiffies (u_time, clocks_per_sec)), |
06e111a6 DN |
2763 | attrs); |
2764 | attrs = Fcons (Fcons (Qstime, | |
a70072c9 | 2765 | ltime_from_jiffies (s_time, clocks_per_sec)), |
06e111a6 | 2766 | attrs); |
ac1e4171 | 2767 | attrs = Fcons (Fcons (Qtime, |
a70072c9 PE |
2768 | ltime_from_jiffies (s_time + u_time, |
2769 | clocks_per_sec)), | |
ac1e4171 | 2770 | attrs); |
06e111a6 DN |
2771 | attrs = Fcons (Fcons (Qcutime, |
2772 | ltime_from_jiffies (cutime, clocks_per_sec)), | |
2773 | attrs); | |
2774 | attrs = Fcons (Fcons (Qcstime, | |
2775 | ltime_from_jiffies (cstime, clocks_per_sec)), | |
ac1e4171 EZ |
2776 | attrs); |
2777 | attrs = Fcons (Fcons (Qctime, | |
2778 | ltime_from_jiffies (cstime+cutime, clocks_per_sec)), | |
06e111a6 DN |
2779 | attrs); |
2780 | attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs); | |
a70072c9 | 2781 | attrs = Fcons (Fcons (Qnice, make_number (niceness)), attrs); |
06e111a6 | 2782 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs); |
e9a9ae03 | 2783 | tnow = current_emacs_time (); |
d35af63c | 2784 | telapsed = get_up_time (); |
e9a9ae03 | 2785 | tboot = sub_emacs_time (tnow, telapsed); |
d35af63c | 2786 | tstart = time_from_jiffies (start, clocks_per_sec); |
e9a9ae03 | 2787 | tstart = add_emacs_time (tboot, tstart); |
d35af63c | 2788 | attrs = Fcons (Fcons (Qstart, make_lisp_time (tstart)), attrs); |
06e111a6 DN |
2789 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize/1024)), attrs); |
2790 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4*rss)), attrs); | |
e9a9ae03 | 2791 | telapsed = sub_emacs_time (tnow, tstart); |
d35af63c PE |
2792 | attrs = Fcons (Fcons (Qetime, make_lisp_time (telapsed)), attrs); |
2793 | us_time = time_from_jiffies (u_time + s_time, clocks_per_sec); | |
2794 | pcpu = (EMACS_TIME_TO_DOUBLE (us_time) | |
2795 | / EMACS_TIME_TO_DOUBLE (telapsed)); | |
06e111a6 DN |
2796 | if (pcpu > 1.0) |
2797 | pcpu = 1.0; | |
2798 | attrs = Fcons (Fcons (Qpcpu, make_float (100 * pcpu)), attrs); | |
2799 | pmem = 4.0 * 100 * rss / procfs_get_total_memory (); | |
2800 | if (pmem > 100) | |
2801 | pmem = 100; | |
2802 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); | |
2803 | } | |
2804 | } | |
2805 | if (fd >= 0) | |
2806 | emacs_close (fd); | |
2807 | ||
2808 | /* args */ | |
2809 | strcpy (procfn_end, "/cmdline"); | |
2810 | fd = emacs_open (fn, O_RDONLY, 0); | |
2811 | if (fd >= 0) | |
2812 | { | |
fbd02d7b | 2813 | char ch; |
fe6442b1 | 2814 | for (cmdline_size = 0; cmdline_size < STRING_BYTES_BOUND; cmdline_size++) |
06e111a6 | 2815 | { |
fe6442b1 PE |
2816 | if (emacs_read (fd, &ch, 1) != 1) |
2817 | break; | |
fbd02d7b | 2818 | c = ch; |
620f13b0 | 2819 | if (c_isspace (c) || c == '\\') |
06e111a6 DN |
2820 | cmdline_size++; /* for later quoting, see below */ |
2821 | } | |
2822 | if (cmdline_size) | |
2823 | { | |
2824 | cmdline = xmalloc (cmdline_size + 1); | |
2825 | lseek (fd, 0L, SEEK_SET); | |
2826 | cmdline[0] = '\0'; | |
2827 | if ((nread = read (fd, cmdline, cmdline_size)) >= 0) | |
2828 | cmdline[nread++] = '\0'; | |
2829 | else | |
2830 | { | |
2831 | /* Assigning zero to `nread' makes us skip the following | |
2832 | two loops, assign zero to cmdline_size, and enter the | |
2833 | following `if' clause that handles unknown command | |
2834 | lines. */ | |
2835 | nread = 0; | |
2836 | } | |
2837 | /* We don't want trailing null characters. */ | |
fe6442b1 | 2838 | for (p = cmdline + nread; p > cmdline + 1 && !p[-1]; p--) |
06e111a6 DN |
2839 | nread--; |
2840 | for (p = cmdline; p < cmdline + nread; p++) | |
2841 | { | |
2842 | /* Escape-quote whitespace and backslashes. */ | |
620f13b0 | 2843 | if (c_isspace (*p) || *p == '\\') |
06e111a6 DN |
2844 | { |
2845 | memmove (p + 1, p, nread - (p - cmdline)); | |
2846 | nread++; | |
2847 | *p++ = '\\'; | |
2848 | } | |
2849 | else if (*p == '\0') | |
2850 | *p = ' '; | |
2851 | } | |
2852 | cmdline_size = nread; | |
2853 | } | |
2854 | if (!cmdline_size) | |
2855 | { | |
06e111a6 DN |
2856 | cmdline_size = cmdsize + 2; |
2857 | cmdline = xmalloc (cmdline_size + 1); | |
e99a530f | 2858 | sprintf (cmdline, "[%.*s]", cmdsize, cmd); |
06e111a6 DN |
2859 | } |
2860 | emacs_close (fd); | |
2861 | /* Command line is encoded in locale-coding-system; decode it. */ | |
2862 | cmd_str = make_unibyte_string (cmdline, cmdline_size); | |
2863 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
2864 | Vlocale_coding_system, 0); | |
2865 | xfree (cmdline); | |
2866 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
2867 | } | |
2868 | ||
2869 | UNGCPRO; | |
2870 | return attrs; | |
2871 | } | |
91c85b70 | 2872 | |
f4f634e8 DN |
2873 | #elif defined (SOLARIS2) && defined (HAVE_PROCFS) |
2874 | ||
2875 | /* The <procfs.h> header does not like to be included if _LP64 is defined and | |
2876 | __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */ | |
2877 | #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) | |
2878 | #define PROCFS_FILE_OFFSET_BITS_HACK 1 | |
2879 | #undef _FILE_OFFSET_BITS | |
2880 | #else | |
2881 | #define PROCFS_FILE_OFFSET_BITS_HACK 0 | |
2882 | #endif | |
2883 | ||
2884 | #include <procfs.h> | |
2885 | ||
2886 | #if PROCFS_FILE_OFFSET_BITS_HACK == 1 | |
2887 | #define _FILE_OFFSET_BITS 64 | |
90efadd1 PE |
2888 | #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */ |
2889 | #endif | |
f4f634e8 DN |
2890 | #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */ |
2891 | ||
2892 | Lisp_Object | |
2893 | system_process_attributes (Lisp_Object pid) | |
2894 | { | |
2895 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
2896 | struct stat st; | |
2897 | struct passwd *pw; | |
2898 | struct group *gr; | |
2899 | char *procfn_end; | |
2900 | struct psinfo pinfo; | |
2901 | int fd; | |
2902 | ssize_t nread; | |
d311d28c PE |
2903 | printmax_t proc_id; |
2904 | uid_t uid; | |
2905 | gid_t gid; | |
f4f634e8 DN |
2906 | Lisp_Object attrs = Qnil; |
2907 | Lisp_Object decoded_cmd, tem; | |
2908 | struct gcpro gcpro1, gcpro2; | |
f4f634e8 DN |
2909 | |
2910 | CHECK_NUMBER_OR_FLOAT (pid); | |
225a2cff | 2911 | CONS_TO_INTEGER (pid, pid_t, proc_id); |
d311d28c | 2912 | sprintf (procfn, "/proc/%"pMd, proc_id); |
f4f634e8 DN |
2913 | if (stat (procfn, &st) < 0) |
2914 | return attrs; | |
2915 | ||
2916 | GCPRO2 (attrs, decoded_cmd); | |
2917 | ||
2918 | /* euid egid */ | |
2919 | uid = st.st_uid; | |
d311d28c | 2920 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
f4f634e8 DN |
2921 | BLOCK_INPUT; |
2922 | pw = getpwuid (uid); | |
2923 | UNBLOCK_INPUT; | |
2924 | if (pw) | |
2925 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
2926 | ||
2927 | gid = st.st_gid; | |
d311d28c | 2928 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
f4f634e8 DN |
2929 | BLOCK_INPUT; |
2930 | gr = getgrgid (gid); | |
2931 | UNBLOCK_INPUT; | |
2932 | if (gr) | |
2933 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
2934 | ||
2935 | strcpy (fn, procfn); | |
2936 | procfn_end = fn + strlen (fn); | |
2937 | strcpy (procfn_end, "/psinfo"); | |
2938 | fd = emacs_open (fn, O_RDONLY, 0); | |
2939 | if (fd >= 0 | |
cf84bb53 | 2940 | && (nread = read (fd, (char*)&pinfo, sizeof (struct psinfo)) > 0)) |
f4f634e8 DN |
2941 | { |
2942 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs); | |
2943 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs); | |
2944 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (pinfo.pr_sid)), attrs); | |
2945 | ||
2946 | { | |
2947 | char state_str[2]; | |
2948 | state_str[0] = pinfo.pr_lwp.pr_sname; | |
2949 | state_str[1] = '\0'; | |
2950 | tem = build_string (state_str); | |
2951 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
2952 | } | |
2953 | ||
2954 | /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t, | |
2955 | need to get a string from it. */ | |
2956 | ||
2957 | /* FIXME: missing: Qtpgid */ | |
2958 | ||
2959 | /* FIXME: missing: | |
2960 | Qminflt | |
2961 | Qmajflt | |
2962 | Qcminflt | |
2963 | Qcmajflt | |
2964 | ||
bfe11752 DN |
2965 | Qutime |
2966 | Qcutime | |
f4f634e8 DN |
2967 | Qstime |
2968 | Qcstime | |
2969 | Are they available? */ | |
2970 | ||
d35af63c PE |
2971 | attrs = Fcons (Fcons (Qtime, make_lisp_time (pinfo.pr_time)), attrs); |
2972 | attrs = Fcons (Fcons (Qctime, make_lisp_time (pinfo.pr_ctime)), attrs); | |
f4f634e8 DN |
2973 | attrs = Fcons (Fcons (Qpri, make_number (pinfo.pr_lwp.pr_pri)), attrs); |
2974 | attrs = Fcons (Fcons (Qnice, make_number (pinfo.pr_lwp.pr_nice)), attrs); | |
2975 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pinfo.pr_nlwp)), attrs); | |
2976 | ||
d35af63c | 2977 | attrs = Fcons (Fcons (Qstart, make_lisp_time (pinfo.pr_start)), attrs); |
f4f634e8 DN |
2978 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (pinfo.pr_size)), attrs); |
2979 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (pinfo.pr_rssize)), attrs); | |
2980 | ||
773d47f6 PE |
2981 | /* pr_pctcpu and pr_pctmem are unsigned integers in the |
2982 | range 0 .. 2**15, representing 0.0 .. 1.0. */ | |
63810350 PE |
2983 | attrs = Fcons (Fcons (Qpcpu, make_float (100.0 / 0x8000 * pinfo.pr_pctcpu)), attrs); |
2984 | attrs = Fcons (Fcons (Qpmem, make_float (100.0 / 0x8000 * pinfo.pr_pctmem)), attrs); | |
f4f634e8 DN |
2985 | |
2986 | decoded_cmd | |
2987 | = code_convert_string_norecord (make_unibyte_string (pinfo.pr_fname, | |
2988 | strlen (pinfo.pr_fname)), | |
2989 | Vlocale_coding_system, 0); | |
2990 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
2991 | decoded_cmd | |
2992 | = code_convert_string_norecord (make_unibyte_string (pinfo.pr_psargs, | |
2993 | strlen (pinfo.pr_psargs)), | |
2994 | Vlocale_coding_system, 0); | |
2995 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
2996 | } | |
2997 | ||
2d2d05d8 DN |
2998 | if (fd >= 0) |
2999 | emacs_close (fd); | |
3000 | ||
f4f634e8 DN |
3001 | UNGCPRO; |
3002 | return attrs; | |
3003 | } | |
06e111a6 | 3004 | |
5790543d | 3005 | #elif defined __FreeBSD__ |
b91b7e4d | 3006 | |
d054f3fb PE |
3007 | static EMACS_TIME |
3008 | timeval_to_EMACS_TIME (struct timeval t) | |
3009 | { | |
e9a9ae03 | 3010 | return make_emacs_time (t.tv_sec, t.tv_usec * 1000); |
d054f3fb PE |
3011 | } |
3012 | ||
3013 | static Lisp_Object | |
db7b8d06 | 3014 | make_lisp_timeval (struct timeval t) |
d054f3fb PE |
3015 | { |
3016 | return make_lisp_time (timeval_to_EMACS_TIME (t)); | |
3017 | } | |
3018 | ||
b91b7e4d EW |
3019 | Lisp_Object |
3020 | system_process_attributes (Lisp_Object pid) | |
3021 | { | |
3022 | int proc_id; | |
5790543d | 3023 | int pagesize = getpagesize (); |
b91b7e4d EW |
3024 | int npages; |
3025 | int fscale; | |
3026 | struct passwd *pw; | |
3027 | struct group *gr; | |
3028 | char *ttyname; | |
3029 | size_t len; | |
3030 | char args[MAXPATHLEN]; | |
3031 | EMACS_TIME t, now; | |
5790543d | 3032 | |
b91b7e4d EW |
3033 | int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID}; |
3034 | struct kinfo_proc proc; | |
5790543d | 3035 | size_t proclen = sizeof proc; |
b91b7e4d EW |
3036 | |
3037 | struct gcpro gcpro1, gcpro2; | |
3038 | Lisp_Object attrs = Qnil; | |
3039 | Lisp_Object decoded_comm; | |
5790543d | 3040 | |
b91b7e4d | 3041 | CHECK_NUMBER_OR_FLOAT (pid); |
af52196c | 3042 | CONS_TO_INTEGER (pid, int, proc_id); |
b91b7e4d | 3043 | mib[3] = proc_id; |
5790543d | 3044 | |
b91b7e4d EW |
3045 | if (sysctl (mib, 4, &proc, &proclen, NULL, 0) != 0) |
3046 | return attrs; | |
3047 | ||
3048 | GCPRO2 (attrs, decoded_comm); | |
5790543d PE |
3049 | |
3050 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (proc.ki_uid)), attrs); | |
3051 | ||
b91b7e4d EW |
3052 | BLOCK_INPUT; |
3053 | pw = getpwuid (proc.ki_uid); | |
3054 | UNBLOCK_INPUT; | |
3055 | if (pw) | |
3056 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3057 | ||
5790543d | 3058 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (proc.ki_svgid)), attrs); |
b91b7e4d EW |
3059 | |
3060 | BLOCK_INPUT; | |
3061 | gr = getgrgid (proc.ki_svgid); | |
3062 | UNBLOCK_INPUT; | |
3063 | if (gr) | |
3064 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3065 | ||
3066 | decoded_comm = code_convert_string_norecord | |
3067 | (make_unibyte_string (proc.ki_comm, strlen (proc.ki_comm)), | |
3068 | Vlocale_coding_system, 0); | |
5790543d | 3069 | |
b91b7e4d EW |
3070 | attrs = Fcons (Fcons (Qcomm, decoded_comm), attrs); |
3071 | { | |
3072 | char state[2] = {'\0', '\0'}; | |
3073 | switch (proc.ki_stat) | |
3074 | { | |
3075 | case SRUN: | |
3076 | state[0] = 'R'; | |
3077 | break; | |
3078 | ||
3079 | case SSLEEP: | |
3080 | state[0] = 'S'; | |
3081 | break; | |
5790543d | 3082 | |
b91b7e4d EW |
3083 | case SLOCK: |
3084 | state[0] = 'D'; | |
3085 | break; | |
3086 | ||
3087 | case SZOMB: | |
3088 | state[0] = 'Z'; | |
3089 | break; | |
5790543d | 3090 | |
b91b7e4d EW |
3091 | case SSTOP: |
3092 | state[0] = 'T'; | |
3093 | break; | |
3094 | } | |
3095 | attrs = Fcons (Fcons (Qstate, build_string (state)), attrs); | |
3096 | } | |
5790543d | 3097 | |
b91b7e4d EW |
3098 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (proc.ki_ppid)), attrs); |
3099 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (proc.ki_pgid)), attrs); | |
3100 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (proc.ki_sid)), attrs); | |
3101 | ||
3102 | BLOCK_INPUT; | |
3103 | ttyname = proc.ki_tdev == NODEV ? NULL : devname (proc.ki_tdev, S_IFCHR); | |
3104 | UNBLOCK_INPUT; | |
3105 | if (ttyname) | |
3106 | attrs = Fcons (Fcons (Qtty, build_string (ttyname)), attrs); | |
5790543d | 3107 | |
b91b7e4d EW |
3108 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (proc.ki_tpgid)), attrs); |
3109 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (proc.ki_rusage.ru_minflt)), attrs); | |
3110 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (proc.ki_rusage.ru_majflt)), attrs); | |
3111 | attrs = Fcons (Fcons (Qcminflt, make_number (proc.ki_rusage_ch.ru_minflt)), attrs); | |
3112 | attrs = Fcons (Fcons (Qcmajflt, make_number (proc.ki_rusage_ch.ru_majflt)), attrs); | |
3113 | ||
db7b8d06 PE |
3114 | attrs = Fcons (Fcons (Qutime, make_lisp_timeval (proc.ki_rusage.ru_utime)), |
3115 | attrs); | |
3116 | attrs = Fcons (Fcons (Qstime, make_lisp_timeval (proc.ki_rusage.ru_stime)), | |
3117 | attrs); | |
e9a9ae03 PE |
3118 | t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage.ru_utime), |
3119 | timeval_to_EMACS_TIME (proc.ki_rusage.ru_stime)); | |
db7b8d06 | 3120 | attrs = Fcons (Fcons (Qtime, make_lisp_time (t)), attrs); |
b91b7e4d | 3121 | |
db7b8d06 PE |
3122 | attrs = Fcons (Fcons (Qcutime, |
3123 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3124 | attrs); | |
3125 | attrs = Fcons (Fcons (Qcstime, | |
3126 | make_lisp_timeval (proc.ki_rusage_ch.ru_utime)), | |
3127 | attrs); | |
e9a9ae03 PE |
3128 | t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_utime), |
3129 | timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_stime)); | |
db7b8d06 | 3130 | attrs = Fcons (Fcons (Qctime, make_lisp_time (t)), attrs); |
b91b7e4d | 3131 | |
5790543d PE |
3132 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (proc.ki_numthreads)), |
3133 | attrs); | |
b91b7e4d EW |
3134 | attrs = Fcons (Fcons (Qpri, make_number (proc.ki_pri.pri_native)), attrs); |
3135 | attrs = Fcons (Fcons (Qnice, make_number (proc.ki_nice)), attrs); | |
db7b8d06 | 3136 | attrs = Fcons (Fcons (Qstart, make_lisp_timeval (proc.ki_start)), attrs); |
b91b7e4d | 3137 | attrs = Fcons (Fcons (Qvsize, make_number (proc.ki_size >> 10)), attrs); |
5790543d PE |
3138 | attrs = Fcons (Fcons (Qrss, make_number (proc.ki_rssize * pagesize >> 10)), |
3139 | attrs); | |
b91b7e4d | 3140 | |
e9a9ae03 PE |
3141 | now = current_emacs_time (); |
3142 | t = sub_emacs_time (now, timeval_to_EMACS_TIME (proc.ki_start)); | |
db7b8d06 | 3143 | attrs = Fcons (Fcons (Qetime, make_lisp_time (t)), attrs); |
b91b7e4d | 3144 | |
5790543d | 3145 | len = sizeof fscale; |
b91b7e4d EW |
3146 | if (sysctlbyname ("kern.fscale", &fscale, &len, NULL, 0) == 0) |
3147 | { | |
5790543d | 3148 | double pcpu; |
b91b7e4d | 3149 | fixpt_t ccpu; |
5790543d | 3150 | len = sizeof ccpu; |
b91b7e4d EW |
3151 | if (sysctlbyname ("kern.ccpu", &ccpu, &len, NULL, 0) == 0) |
3152 | { | |
5790543d PE |
3153 | pcpu = (100.0 * proc.ki_pctcpu / fscale |
3154 | / (1 - exp (proc.ki_swtime * log ((double) ccpu / fscale)))); | |
3155 | attrs = Fcons (Fcons (Qpcpu, make_fixnum_or_float (pcpu)), attrs); | |
b91b7e4d EW |
3156 | } |
3157 | } | |
3158 | ||
5790543d | 3159 | len = sizeof npages; |
b91b7e4d EW |
3160 | if (sysctlbyname ("hw.availpages", &npages, &len, NULL, 0) == 0) |
3161 | { | |
5790543d PE |
3162 | double pmem = (proc.ki_flag & P_INMEM |
3163 | ? 100.0 * proc.ki_rssize / npages | |
3164 | : 0); | |
3165 | attrs = Fcons (Fcons (Qpmem, make_fixnum_or_float (pmem)), attrs); | |
b91b7e4d EW |
3166 | } |
3167 | ||
3168 | mib[2] = KERN_PROC_ARGS; | |
3169 | len = MAXPATHLEN; | |
3170 | if (sysctl (mib, 4, args, &len, NULL, 0) == 0) | |
3171 | { | |
3172 | int i; | |
3173 | for (i = 0; i < len; i++) | |
3174 | { | |
3175 | if (! args[i] && i < len - 1) | |
3176 | args[i] = ' '; | |
3177 | } | |
3178 | ||
5790543d PE |
3179 | decoded_comm = |
3180 | (code_convert_string_norecord | |
d7ea76b4 | 3181 | (build_unibyte_string (args), |
5790543d | 3182 | Vlocale_coding_system, 0)); |
b91b7e4d EW |
3183 | |
3184 | attrs = Fcons (Fcons (Qargs, decoded_comm), attrs); | |
3185 | } | |
5790543d | 3186 | |
b91b7e4d EW |
3187 | UNGCPRO; |
3188 | return attrs; | |
3189 | } | |
3190 | ||
f8d23104 DN |
3191 | /* The WINDOWSNT implementation is in w32.c. |
3192 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 3193 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
3194 | |
3195 | Lisp_Object | |
3196 | system_process_attributes (Lisp_Object pid) | |
3197 | { | |
9dcbe89b | 3198 | return Qnil; |
06e111a6 DN |
3199 | } |
3200 | ||
3201 | #endif /* !defined (WINDOWSNT) */ |