Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
275464e7 | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
114f9c96 | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
8cabe764 | 4 | Free Software Foundation, Inc. |
86a5659e JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
86a5659e | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
86a5659e JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
86a5659e | 20 | |
4838e624 | 21 | #include <config.h> |
2c55aacf | 22 | #include <ctype.h> |
86a5659e | 23 | #include <signal.h> |
5890e9f7 | 24 | #include <stdio.h> |
86a5659e | 25 | #include <setjmp.h> |
06e111a6 DN |
26 | #ifdef HAVE_PWD_H |
27 | #include <pwd.h> | |
28 | #include <grp.h> | |
29 | #endif /* HAVE_PWD_H */ | |
30 | #ifdef HAVE_LIMITS_H | |
31 | #include <limits.h> | |
32 | #endif /* HAVE_LIMITS_H */ | |
d3eb3bfa DL |
33 | #ifdef HAVE_UNISTD_H |
34 | #include <unistd.h> | |
35 | #endif | |
53934c98 | 36 | |
86a5659e | 37 | #include "lisp.h" |
819b8f00 | 38 | #include "sysselect.h" |
9ac0d9e0 | 39 | #include "blockinput.h" |
86a5659e | 40 | |
fe03522b | 41 | #ifdef WINDOWSNT |
e15b6288 JR |
42 | #define read sys_read |
43 | #define write sys_write | |
fe03522b | 44 | #include <windows.h> |
e36ec798 AI |
45 | #ifndef NULL |
46 | #define NULL 0 | |
47 | #endif | |
fe03522b RS |
48 | #endif /* not WINDOWSNT */ |
49 | ||
86a5659e JB |
50 | #include <sys/types.h> |
51 | #include <sys/stat.h> | |
52 | #include <errno.h> | |
53 | ||
f95c3f91 | 54 | #ifdef HAVE_SETPGID |
58eb6cf0 | 55 | #if !defined (USG) |
c8875a65 | 56 | #undef setpgrp |
f95c3f91 GM |
57 | #define setpgrp setpgid |
58 | #endif | |
2b7e8799 | 59 | #endif |
f95c3f91 | 60 | |
b05af5d3 PE |
61 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
62 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
63 | #include <sys/systeminfo.h> | |
64 | #endif | |
65 | ||
207bdbdb RS |
66 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
67 | #include <dos.h> | |
68 | #include "dosfns.h" | |
69 | #include "msdos.h" | |
70 | #include <sys/param.h> | |
15614e61 | 71 | #endif |
207bdbdb | 72 | |
bb4bc8e2 | 73 | #include <sys/file.h> |
7ce1c4de | 74 | |
612221ab | 75 | #ifdef HAVE_FCNTL_H |
bb4bc8e2 RM |
76 | #include <fcntl.h> |
77 | #endif | |
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 */ |
8646d999 J |
96 | #ifdef HAVE_TERM_H |
97 | /* Include this last. If it is ncurses header file, it adds a lot of | |
98 | defines that interfere with stuff in other headers. Someone responsible | |
99 | for ncurses messed up bigtime. See bug#6812. */ | |
100 | #include <term.h> | |
101 | #endif | |
86a5659e | 102 | |
fe03522b RS |
103 | #ifdef WINDOWSNT |
104 | #include <direct.h> | |
105 | /* In process.h which conflicts with the local copy. */ | |
106 | #define _P_WAIT 0 | |
43db14bb JB |
107 | int _cdecl _spawnlp (int, const char *, const char *, ...); |
108 | int _cdecl _getpid (void); | |
b6682dd9 | 109 | extern char *getwd (char *); |
fe03522b RS |
110 | #endif |
111 | ||
91bac16a JB |
112 | #include "syssignal.h" |
113 | #include "systime.h" | |
d79998bc KH |
114 | #ifdef HAVE_UTIME_H |
115 | #include <utime.h> | |
116 | #endif | |
117 | ||
118 | #ifndef HAVE_UTIMES | |
119 | #ifndef HAVE_STRUCT_UTIMBUF | |
120 | /* We want to use utime rather than utimes, but we couldn't find the | |
121 | structure declaration. We'll use the traditional one. */ | |
122 | struct utimbuf { | |
123 | long actime; | |
124 | long modtime; | |
125 | }; | |
126 | #endif | |
127 | #endif | |
86a5659e | 128 | |
a00d5589 RS |
129 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
130 | #ifndef LPASS8 | |
131 | #define LPASS8 0 | |
132 | #endif | |
133 | ||
91433552 | 134 | static const int baud_convert[] = |
86a5659e JB |
135 | { |
136 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
137 | 1800, 2400, 4800, 9600, 19200, 38400 | |
138 | }; | |
86a5659e | 139 | |
5bdd7bdd GM |
140 | int emacs_ospeed; |
141 | ||
f57e2426 | 142 | void croak (char *) NO_RETURN; |
b9c4113e | 143 | |
89723395 GM |
144 | /* Temporary used by `sigblock' when defined in terms of signprocmask. */ |
145 | ||
146 | SIGMASKTYPE sigprocmask_set; | |
147 | ||
f78f1a83 | 148 | |
3480d92b | 149 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) |
f78f1a83 | 150 | |
b6682dd9 | 151 | /* Return the current working directory. Returns NULL on errors. |
f78f1a83 EZ |
152 | Any other returned value must be freed with free. This is used |
153 | only when get_current_dir_name is not defined on the system. */ | |
154 | char* | |
cf84bb53 | 155 | get_current_dir_name (void) |
f78f1a83 EZ |
156 | { |
157 | char *buf; | |
158 | char *pwd; | |
159 | struct stat dotstat, pwdstat; | |
160 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
161 | sometimes a nicer name, and using it may avoid a fatal error if a | |
162 | parent directory is searchable but not readable. */ | |
163 | if ((pwd = getenv ("PWD")) != 0 | |
164 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
165 | && stat (pwd, &pwdstat) == 0 | |
166 | && stat (".", &dotstat) == 0 | |
167 | && dotstat.st_ino == pwdstat.st_ino | |
168 | && dotstat.st_dev == pwdstat.st_dev | |
169 | #ifdef MAXPATHLEN | |
170 | && strlen (pwd) < MAXPATHLEN | |
171 | #endif | |
172 | ) | |
173 | { | |
174 | buf = (char *) malloc (strlen (pwd) + 1); | |
175 | if (!buf) | |
176 | return NULL; | |
177 | strcpy (buf, pwd); | |
178 | } | |
179 | #ifdef HAVE_GETCWD | |
180 | else | |
181 | { | |
182 | size_t buf_size = 1024; | |
b6682dd9 | 183 | buf = (char *) malloc (buf_size); |
f78f1a83 EZ |
184 | if (!buf) |
185 | return NULL; | |
186 | for (;;) | |
187 | { | |
188 | if (getcwd (buf, buf_size) == buf) | |
189 | break; | |
190 | if (errno != ERANGE) | |
191 | { | |
192 | int tmp_errno = errno; | |
193 | free (buf); | |
194 | errno = tmp_errno; | |
195 | return NULL; | |
196 | } | |
197 | buf_size *= 2; | |
198 | buf = (char *) realloc (buf, buf_size); | |
199 | if (!buf) | |
200 | return NULL; | |
201 | } | |
202 | } | |
203 | #else | |
204 | else | |
205 | { | |
206 | /* We need MAXPATHLEN here. */ | |
207 | buf = (char *) malloc (MAXPATHLEN + 1); | |
208 | if (!buf) | |
209 | return NULL; | |
210 | if (getwd (buf) == NULL) | |
211 | { | |
212 | int tmp_errno = errno; | |
213 | free (buf); | |
214 | errno = tmp_errno; | |
215 | return NULL; | |
216 | } | |
217 | } | |
218 | #endif | |
219 | return buf; | |
220 | } | |
221 | #endif | |
222 | ||
64e971c3 | 223 | \f |
9628b887 | 224 | /* Discard pending input on all input descriptors. */ |
91bac16a | 225 | |
08633194 | 226 | void |
971de7fb | 227 | discard_tty_input (void) |
86a5659e | 228 | { |
fe03522b | 229 | #ifndef WINDOWSNT |
91bac16a | 230 | struct emacs_tty buf; |
86a5659e JB |
231 | |
232 | if (noninteractive) | |
233 | return; | |
234 | ||
fe03522b | 235 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 236 | while (dos_keyread () != -1) |
fe03522b | 237 | ; |
207bdbdb | 238 | #else /* not MSDOS */ |
9628b887 | 239 | { |
28d7d09f | 240 | struct tty_display_info *tty; |
9628b887 KL |
241 | for (tty = tty_list; tty; tty = tty->next) |
242 | { | |
0b0d3e0b KL |
243 | if (tty->input) /* Is the device suspended? */ |
244 | { | |
245 | EMACS_GET_TTY (fileno (tty->input), &buf); | |
246 | EMACS_SET_TTY (fileno (tty->input), &buf, 0); | |
247 | } | |
9628b887 KL |
248 | } |
249 | } | |
207bdbdb | 250 | #endif /* not MSDOS */ |
fe03522b | 251 | #endif /* not WINDOWSNT */ |
86a5659e JB |
252 | } |
253 | ||
16c290d8 | 254 | \f |
86a5659e JB |
255 | #ifdef SIGTSTP |
256 | ||
64e971c3 | 257 | /* Arrange for character C to be read as the next input from |
16c290d8 KL |
258 | the terminal. |
259 | XXX What if we have multiple ttys? | |
260 | */ | |
64e971c3 | 261 | |
dfcf069d | 262 | void |
0c2338d8 | 263 | stuff_char (char c) |
86a5659e | 264 | { |
428a555e | 265 | if (! FRAME_TERMCAP_P (SELECTED_FRAME ())) |
23dab951 RS |
266 | return; |
267 | ||
86a5659e JB |
268 | /* Should perhaps error if in batch mode */ |
269 | #ifdef TIOCSTI | |
0b0d3e0b | 270 | ioctl (fileno (CURTTY()->input), TIOCSTI, &c); |
86a5659e | 271 | #else /* no TIOCSTI */ |
71f06467 | 272 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
273 | #endif /* no TIOCSTI */ |
274 | } | |
275 | ||
276 | #endif /* SIGTSTP */ | |
64e971c3 | 277 | \f |
08633194 | 278 | void |
16c290d8 | 279 | init_baud_rate (int fd) |
86a5659e | 280 | { |
86a5659e | 281 | if (noninteractive) |
5bdd7bdd | 282 | emacs_ospeed = 0; |
86a5659e JB |
283 | else |
284 | { | |
fe03522b | 285 | #ifdef DOS_NT |
5bdd7bdd | 286 | emacs_ospeed = 15; |
fe03522b | 287 | #else /* not DOS_NT */ |
e04a4e0d | 288 | struct termios sg; |
91bac16a | 289 | |
71f06467 | 290 | sg.c_cflag = B9600; |
16c290d8 | 291 | tcgetattr (fd, &sg); |
5bdd7bdd | 292 | emacs_ospeed = cfgetospeed (&sg); |
fe03522b | 293 | #endif /* not DOS_NT */ |
86a5659e | 294 | } |
177c0ea7 | 295 | |
5bdd7bdd GM |
296 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
297 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
298 | if (baud_rate == 0) |
299 | baud_rate = 1200; | |
300 | } | |
301 | ||
16c290d8 | 302 | \f |
86a5659e | 303 | /*ARGSUSED*/ |
dfcf069d | 304 | void |
971de7fb | 305 | set_exclusive_use (int fd) |
86a5659e JB |
306 | { |
307 | #ifdef FIOCLEX | |
308 | ioctl (fd, FIOCLEX, 0); | |
309 | #endif | |
310 | /* Ok to do nothing if this feature does not exist */ | |
311 | } | |
64e971c3 | 312 | \f |
86a5659e JB |
313 | |
314 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 315 | (at least for bsd). */ |
86a5659e JB |
316 | |
317 | SIGTYPE | |
971de7fb | 318 | wait_for_termination_signal (void) |
86a5659e JB |
319 | {} |
320 | ||
77defa9a | 321 | #ifndef MSDOS |
86a5659e JB |
322 | /* Wait for subprocess with process id `pid' to terminate and |
323 | make sure it will get eliminated (not remain forever as a zombie) */ | |
324 | ||
08633194 | 325 | void |
971de7fb | 326 | wait_for_termination (int pid) |
86a5659e JB |
327 | { |
328 | while (1) | |
329 | { | |
f2a77c3a | 330 | #if defined (BSD_SYSTEM) || defined (HPUX) |
4c8975ad RS |
331 | /* Note that kill returns -1 even if the process is just a zombie now. |
332 | But inevitably a SIGCHLD interrupt should be generated | |
333 | and child_sig will do wait3 and make the process go away. */ | |
334 | /* There is some indication that there is a bug involved with | |
335 | termination of subprocesses, perhaps involving a kernel bug too, | |
336 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
337 | if that causes the problem to go away or get worse. */ | |
338 | sigsetmask (sigmask (SIGCHLD)); | |
339 | if (0 > kill (pid, 0)) | |
fe03522b | 340 | { |
4c8975ad RS |
341 | sigsetmask (SIGEMPTYMASK); |
342 | kill (getpid (), SIGCHLD); | |
343 | break; | |
344 | } | |
345 | if (wait_debugging) | |
346 | sleep (1); | |
347 | else | |
348 | sigpause (SIGEMPTYMASK); | |
2a633456 | 349 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
d6dae14b EZ |
350 | #ifdef WINDOWSNT |
351 | wait (0); | |
352 | break; | |
353 | #else /* not WINDOWSNT */ | |
9ab714c7 | 354 | sigblock (sigmask (SIGCHLD)); |
59957f85 GM |
355 | errno = 0; |
356 | if (kill (pid, 0) == -1 && errno == ESRCH) | |
9ab714c7 RS |
357 | { |
358 | sigunblock (sigmask (SIGCHLD)); | |
359 | break; | |
360 | } | |
ac3ac859 | 361 | |
0fdcb867 | 362 | sigsuspend (&empty_mask); |
d6dae14b | 363 | #endif /* not WINDOWSNT */ |
2a633456 | 364 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e JB |
365 | } |
366 | } | |
367 | ||
86a5659e JB |
368 | /* |
369 | * flush any pending output | |
370 | * (may flush input as well; it does not matter the way we use it) | |
371 | */ | |
177c0ea7 | 372 | |
08633194 | 373 | void |
971de7fb | 374 | flush_pending_output (int channel) |
86a5659e | 375 | { |
a7ebc409 | 376 | #ifndef DOS_NT |
86a5659e JB |
377 | /* If we try this, we get hit with SIGTTIN, because |
378 | the child's tty belongs to the child's pgrp. */ | |
379 | #else | |
380 | #ifdef TCFLSH | |
381 | ioctl (channel, TCFLSH, 1); | |
382 | #else | |
383 | #ifdef TIOCFLUSH | |
384 | int zero = 0; | |
385 | /* 3rd arg should be ignored | |
386 | but some 4.2 kernels actually want the address of an int | |
387 | and nonzero means something different. */ | |
388 | ioctl (channel, TIOCFLUSH, &zero); | |
389 | #endif | |
390 | #endif | |
391 | #endif | |
392 | } | |
64e971c3 | 393 | \f |
86a5659e JB |
394 | /* Set up the terminal at the other end of a pseudo-terminal that |
395 | we will be controlling an inferior through. | |
396 | It should not echo or do line-editing, since that is done | |
397 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
398 | ||
08633194 | 399 | void |
971de7fb | 400 | child_setup_tty (int out) |
86a5659e | 401 | { |
77defa9a | 402 | #ifndef WINDOWSNT |
91bac16a JB |
403 | struct emacs_tty s; |
404 | ||
405 | EMACS_GET_TTY (out, &s); | |
91bac16a JB |
406 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
407 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 408 | #ifdef NLDLY |
07cfc4e7 GM |
409 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html |
410 | Some versions of GNU Hurd do not have FFDLY? */ | |
411 | #ifdef FFDLY | |
91bac16a JB |
412 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
413 | /* No output delays */ | |
07cfc4e7 GM |
414 | #else |
415 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY); | |
416 | /* No output delays */ | |
417 | #endif | |
9d4e5eea | 418 | #endif |
91bac16a JB |
419 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
420 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
421 | #ifdef IUCLC |
422 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
423 | #endif | |
f7097b2a RS |
424 | #ifdef ISTRIP |
425 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
426 | #endif | |
23e4c8be | 427 | #ifdef OLCUC |
9d4e5eea RS |
428 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
429 | #endif | |
f7097b2a | 430 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 431 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
441f6399 RS |
432 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
433 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 434 | |
86a5659e | 435 | #ifdef HPUX |
91bac16a | 436 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 437 | #endif /* HPUX */ |
91bac16a | 438 | |
dfe598b5 RS |
439 | #ifdef SIGNALS_VIA_CHARACTERS |
440 | /* the QUIT and INTR character are used in process_send_signal | |
441 | so set them here to something useful. */ | |
fa51fa32 | 442 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 443 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 444 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
445 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
446 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
447 | ||
86a5659e | 448 | #ifdef AIX |
86a5659e JB |
449 | /* Also, PTY overloads NUL and BREAK. |
450 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
451 | s.main.c_iflag &= ~IGNBRK; |
452 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
453 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
454 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
455 | would force it to 0377. That looks like duplicated code. */ | |
91bac16a | 456 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
457 | #endif /* AIX */ |
458 | ||
aaa0a19a SM |
459 | /* We originally enabled ICANON (and set VEOF to 04), and then had |
460 | proces.c send additional EOF chars to flush the output when faced | |
461 | with long lines, but this leads to weird effects when the | |
2b0a91e7 SM |
462 | subprocess has disabled ICANON and ends up seeing those spurious |
463 | extra EOFs. So we don't send EOFs any more in | |
aaa0a19a SM |
464 | process.c:send_process. First we tried to disable ICANON by |
465 | default, so if a subsprocess sets up ICANON, it's his problem (or | |
466 | the Elisp package that talks to it) to deal with lines that are | |
467 | too long. But this disables some features, such as the ability | |
468 | to send EOF signals. So we re-enabled ICANON but there is no | |
469 | more "send eof to flush" going on (which is wrong and unportable | |
470 | in itself). The correct way to handle too much output is to | |
471 | buffer what could not be written and then write it again when | |
472 | select returns ok for writing. This has it own set of | |
473 | problems. Write is now asynchronous, is that a problem? How much | |
474 | do we buffer, and what do we do when that limit is reached? */ | |
9a747ba6 JD |
475 | |
476 | s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */ | |
477 | s.main.c_cc[VEOF] = 'D'&037; /* Control-D */ | |
3d15fe78 | 478 | #if 0 /* These settings only apply to non-ICANON mode. */ |
2b0a91e7 SM |
479 | s.main.c_cc[VMIN] = 1; |
480 | s.main.c_cc[VTIME] = 0; | |
aaa0a19a | 481 | #endif |
2b0a91e7 | 482 | |
91bac16a | 483 | EMACS_SET_TTY (out, &s, 0); |
77defa9a | 484 | #endif /* not WINDOWSNT */ |
86a5659e | 485 | } |
77defa9a | 486 | #endif /* MSDOS */ |
86a5659e | 487 | |
64e971c3 | 488 | \f |
86a5659e JB |
489 | /* Record a signal code and the handler for it. */ |
490 | struct save_signal | |
491 | { | |
492 | int code; | |
f57e2426 | 493 | SIGTYPE (*handler) (int); |
86a5659e JB |
494 | }; |
495 | ||
f57e2426 J |
496 | static void save_signal_handlers (struct save_signal *); |
497 | static void restore_signal_handlers (struct save_signal *); | |
35a05cca | 498 | |
86a5659e JB |
499 | /* Suspend the Emacs process; give terminal to its superior. */ |
500 | ||
08633194 | 501 | void |
971de7fb | 502 | sys_suspend (void) |
86a5659e | 503 | { |
c4ea52a6 | 504 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 505 | |
5a570e37 | 506 | { |
e89a2cd5 | 507 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
508 | EMACS_KILLPG (pgrp, SIGTSTP); |
509 | } | |
86a5659e JB |
510 | |
511 | #else /* No SIGTSTP */ | |
86a5659e JB |
512 | /* On a system where suspending is not implemented, |
513 | instead fork a subshell and let it talk directly to the terminal | |
514 | while we wait. */ | |
a0932daa KH |
515 | sys_subshell (); |
516 | ||
a0932daa | 517 | #endif /* no SIGTSTP */ |
a0932daa KH |
518 | } |
519 | ||
520 | /* Fork a subshell. */ | |
521 | ||
08633194 | 522 | void |
971de7fb | 523 | sys_subshell (void) |
a0932daa | 524 | { |
ad00c243 | 525 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
526 | int st; |
527 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
528 | #endif | |
efa04277 | 529 | int pid; |
86a5659e | 530 | struct save_signal saved_handlers[5]; |
efa04277 RS |
531 | Lisp_Object dir; |
532 | unsigned char *str = 0; | |
533 | int len; | |
86a5659e JB |
534 | |
535 | saved_handlers[0].code = SIGINT; | |
536 | saved_handlers[1].code = SIGQUIT; | |
537 | saved_handlers[2].code = SIGTERM; | |
538 | #ifdef SIGIO | |
539 | saved_handlers[3].code = SIGIO; | |
540 | saved_handlers[4].code = 0; | |
541 | #else | |
542 | saved_handlers[3].code = 0; | |
543 | #endif | |
544 | ||
efa04277 RS |
545 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
546 | which somehow wedges the hp compiler. So instead... */ | |
547 | ||
548 | dir = intern ("default-directory"); | |
0e7e7a58 | 549 | if (NILP (Fboundp (dir))) |
efa04277 RS |
550 | goto xyzzy; |
551 | dir = Fsymbol_value (dir); | |
914e81a2 | 552 | if (!STRINGP (dir)) |
efa04277 RS |
553 | goto xyzzy; |
554 | ||
555 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
d5db4077 KR |
556 | str = (unsigned char *) alloca (SCHARS (dir) + 2); |
557 | len = SCHARS (dir); | |
72af86bd | 558 | memcpy (str, SDATA (dir), len); |
efa04277 RS |
559 | if (str[len - 1] != '/') str[len++] = '/'; |
560 | str[len] = 0; | |
561 | xyzzy: | |
562 | ||
ad00c243 | 563 | #ifdef DOS_NT |
7964ba9e | 564 | pid = 0; |
718ca3cf RS |
565 | save_signal_handlers (saved_handlers); |
566 | synch_process_alive = 1; | |
177c0ea7 | 567 | #else |
efa04277 | 568 | pid = vfork (); |
86a5659e JB |
569 | if (pid == -1) |
570 | error ("Can't spawn subshell"); | |
7964ba9e RS |
571 | #endif |
572 | ||
86a5659e JB |
573 | if (pid == 0) |
574 | { | |
8ea90aa3 | 575 | const char *sh = 0; |
86a5659e | 576 | |
ad00c243 | 577 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 578 | getwd (oldwd); |
7964ba9e RS |
579 | if (sh == 0) |
580 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 581 | #endif |
7964ba9e RS |
582 | if (sh == 0) |
583 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
584 | if (sh == 0) |
585 | sh = "sh"; | |
207bdbdb | 586 | |
86a5659e | 587 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 588 | if (str) |
074c438c | 589 | chdir ((char *) str); |
efa04277 | 590 | |
86a5659e | 591 | close_process_descs (); /* Close Emacs's pipes/ptys */ |
1593c2fe | 592 | |
6f8b4d01 | 593 | #ifdef SET_EMACS_PRIORITY |
1593c2fe | 594 | { |
31ade731 | 595 | extern EMACS_INT emacs_priority; |
1593c2fe | 596 | |
6f8b4d01 | 597 | if (emacs_priority < 0) |
1593c2fe JB |
598 | nice (-emacs_priority); |
599 | } | |
600 | #endif | |
601 | ||
fe03522b | 602 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 603 | { |
48178f9a EZ |
604 | char *epwd = getenv ("PWD"); |
605 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
606 | |
607 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 608 | if (epwd) |
c0917202 | 609 | { |
48178f9a | 610 | strcpy (old_pwd, epwd); |
c0917202 EZ |
611 | if (str[len - 1] == '/') |
612 | str[len - 1] = '\0'; | |
613 | setenv ("PWD", str, 1); | |
614 | } | |
615 | st = system (sh); | |
616 | chdir (oldwd); | |
48178f9a | 617 | if (epwd) |
c0917202 EZ |
618 | putenv (old_pwd); /* restore previous value */ |
619 | } | |
207bdbdb | 620 | #else /* not MSDOS */ |
fe03522b | 621 | #ifdef WINDOWSNT |
fe03522b RS |
622 | /* Waits for process completion */ |
623 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 624 | chdir (oldwd); |
fe03522b RS |
625 | if (pid == -1) |
626 | write (1, "Can't execute subshell", 22); | |
fe03522b | 627 | #else /* not WINDOWSNT */ |
e120ea40 | 628 | execlp (sh, sh, (char *) 0); |
86a5659e JB |
629 | write (1, "Can't execute subshell", 22); |
630 | _exit (1); | |
fe03522b | 631 | #endif /* not WINDOWSNT */ |
207bdbdb | 632 | #endif /* not MSDOS */ |
86a5659e JB |
633 | } |
634 | ||
718ca3cf | 635 | /* Do this now if we did not do it before. */ |
ed68db4d | 636 | #ifndef MSDOS |
86a5659e | 637 | save_signal_handlers (saved_handlers); |
ffafc793 | 638 | synch_process_alive = 1; |
718ca3cf RS |
639 | #endif |
640 | ||
ad00c243 | 641 | #ifndef DOS_NT |
86a5659e | 642 | wait_for_termination (pid); |
7964ba9e | 643 | #endif |
86a5659e | 644 | restore_signal_handlers (saved_handlers); |
718ca3cf | 645 | synch_process_alive = 0; |
86a5659e JB |
646 | } |
647 | ||
35a05cca | 648 | static void |
971de7fb | 649 | save_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
650 | { |
651 | while (saved_handlers->code) | |
652 | { | |
508b171c | 653 | saved_handlers->handler |
f57e2426 | 654 | = (SIGTYPE (*) (int)) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
655 | saved_handlers++; |
656 | } | |
657 | } | |
658 | ||
35a05cca | 659 | static void |
971de7fb | 660 | restore_signal_handlers (struct save_signal *saved_handlers) |
86a5659e JB |
661 | { |
662 | while (saved_handlers->code) | |
663 | { | |
664 | signal (saved_handlers->code, saved_handlers->handler); | |
665 | saved_handlers++; | |
666 | } | |
667 | } | |
668 | \f | |
4d553a13 KL |
669 | #ifndef SIGIO |
670 | /* If SIGIO is broken, don't do anything. */ | |
671 | void | |
672 | init_sigio (int fd) | |
673 | { | |
674 | } | |
675 | ||
676 | void | |
677 | reset_sigio (int fd) | |
678 | { | |
679 | } | |
680 | ||
681 | void | |
682 | request_sigio (void) | |
683 | { | |
684 | } | |
685 | ||
686 | void | |
687 | unrequest_sigio (void) | |
688 | { | |
689 | } | |
690 | ||
691 | #else | |
86a5659e JB |
692 | #ifdef F_SETFL |
693 | ||
819b8f00 | 694 | int old_fcntl_flags[MAXDESC]; |
86a5659e | 695 | |
08633194 | 696 | void |
971de7fb | 697 | init_sigio (int fd) |
86a5659e JB |
698 | { |
699 | #ifdef FASYNC | |
819b8f00 KL |
700 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
701 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
86a5659e | 702 | #endif |
23dab951 | 703 | interrupts_deferred = 0; |
86a5659e JB |
704 | } |
705 | ||
590034f9 | 706 | void |
971de7fb | 707 | reset_sigio (int fd) |
86a5659e | 708 | { |
4d553a13 | 709 | #ifdef FASYNC |
819b8f00 | 710 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 711 | #endif |
86a5659e JB |
712 | } |
713 | ||
eb8c3be9 | 714 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
428a555e | 715 | /* XXX Uhm, FASYNC is not used anymore here. */ |
6d8cf830 | 716 | /* XXX Yeah, but you need it for SIGIO, don't you? */ |
86a5659e | 717 | |
08633194 | 718 | void |
971de7fb | 719 | request_sigio (void) |
86a5659e | 720 | { |
6bbba5a6 | 721 | if (noninteractive) |
23dab951 RS |
722 | return; |
723 | ||
86a5659e | 724 | #ifdef SIGWINCH |
e065a56e | 725 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 726 | #endif |
0a125897 | 727 | sigunblock (sigmask (SIGIO)); |
86a5659e JB |
728 | |
729 | interrupts_deferred = 0; | |
730 | } | |
731 | ||
08633194 | 732 | void |
0a125897 | 733 | unrequest_sigio (void) |
cf84bb53 | 734 | { |
6bbba5a6 KL |
735 | if (noninteractive) |
736 | return; | |
737 | ||
738 | #if 0 /* XXX What's wrong with blocking SIGIO under X? */ | |
739 | if (x_display_list) | |
23dab951 | 740 | return; |
428a555e | 741 | #endif |
6bbba5a6 | 742 | |
86a5659e | 743 | #ifdef SIGWINCH |
e065a56e | 744 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 745 | #endif |
0a125897 | 746 | sigblock (sigmask (SIGIO)); |
86a5659e JB |
747 | interrupts_deferred = 1; |
748 | } | |
749 | ||
750 | #else /* no FASYNC */ | |
feb67dfe | 751 | #ifndef MSDOS |
25ab68af | 752 | |
08633194 | 753 | void |
cf84bb53 | 754 | request_sigio (void) |
86a5659e | 755 | { |
6e5b2385 | 756 | if (noninteractive || read_socket_hook) |
23dab951 RS |
757 | return; |
758 | ||
86a5659e JB |
759 | croak ("request_sigio"); |
760 | } | |
177c0ea7 | 761 | |
08633194 | 762 | void |
cf84bb53 | 763 | unrequest_sigio (void) |
86a5659e | 764 | { |
6e5b2385 | 765 | if (noninteractive || read_socket_hook) |
23dab951 RS |
766 | return; |
767 | ||
86a5659e JB |
768 | croak ("unrequest_sigio"); |
769 | } | |
feb67dfe EZ |
770 | |
771 | #endif /* MSDOS */ | |
86a5659e JB |
772 | #endif /* FASYNC */ |
773 | #endif /* F_SETFL */ | |
4d553a13 | 774 | #endif /* SIGIO */ |
9ae8f997 | 775 | |
9ae8f997 | 776 | \f |
68936329 JB |
777 | /* Getting and setting emacs_tty structures. */ |
778 | ||
779 | /* Set *TC to the parameters associated with the terminal FD. | |
780 | Return zero if all's well, or -1 if we ran into an error we | |
781 | couldn't deal with. */ | |
782 | int | |
971de7fb | 783 | emacs_get_tty (int fd, struct emacs_tty *settings) |
68936329 JB |
784 | { |
785 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 786 | #ifndef DOS_NT |
68936329 | 787 | /* We have those nifty POSIX tcmumbleattr functions. */ |
72af86bd | 788 | memset (&settings->main, 0, sizeof (settings->main)); |
68936329 JB |
789 | if (tcgetattr (fd, &settings->main) < 0) |
790 | return -1; | |
68936329 JB |
791 | #endif |
792 | ||
793 | /* We have survived the tempest. */ | |
794 | return 0; | |
795 | } | |
796 | ||
797 | ||
798 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 799 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 800 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 801 | |
68936329 | 802 | int |
971de7fb | 803 | emacs_set_tty (int fd, struct emacs_tty *settings, int flushp) |
68936329 JB |
804 | { |
805 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
a7ebc409 | 806 | #ifndef DOS_NT |
e6cc3307 | 807 | int i; |
68936329 JB |
808 | /* We have those nifty POSIX tcmumbleattr functions. |
809 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 810 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
811 | able to perform any of the requested actions, even if some |
812 | of the requested actions could not be performed. | |
813 | We must read settings back to ensure tty setup properly. | |
814 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 815 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 816 | for (i = 0 ; i < 10 ; i++) |
394049ec | 817 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
818 | { |
819 | if (errno == EINTR) | |
820 | continue; | |
821 | else | |
822 | return -1; | |
823 | } | |
824 | else | |
825 | { | |
826 | struct termios new; | |
827 | ||
72af86bd | 828 | memset (&new, 0, sizeof (new)); |
68936329 JB |
829 | /* Get the current settings, and see if they're what we asked for. */ |
830 | tcgetattr (fd, &new); | |
e6cc3307 RS |
831 | /* We cannot use memcmp on the whole structure here because under |
832 | * aix386 the termios structure has some reserved field that may | |
833 | * not be filled in. | |
834 | */ | |
835 | if ( new.c_iflag == settings->main.c_iflag | |
836 | && new.c_oflag == settings->main.c_oflag | |
837 | && new.c_cflag == settings->main.c_cflag | |
838 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 839 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 840 | break; |
e6cc3307 RS |
841 | else |
842 | continue; | |
68936329 | 843 | } |
68936329 | 844 | #endif |
177c0ea7 | 845 | |
68936329 JB |
846 | /* We have survived the tempest. */ |
847 | return 0; | |
848 | } | |
849 | ||
850 | \f | |
86a5659e JB |
851 | |
852 | #ifdef F_SETOWN | |
819b8f00 | 853 | int old_fcntl_owner[MAXDESC]; |
86a5659e JB |
854 | #endif /* F_SETOWN */ |
855 | ||
86a5659e JB |
856 | /* This may also be defined in stdio, |
857 | but if so, this does no harm, | |
858 | and using the same name avoids wasting the other one's space. */ | |
859 | ||
9d9a7716 | 860 | #if defined (USG) |
86a5659e JB |
861 | unsigned char _sobuf[BUFSIZ+8]; |
862 | #else | |
863 | char _sobuf[BUFSIZ]; | |
864 | #endif | |
177c0ea7 | 865 | |
da8e1115 KL |
866 | /* Initialize the terminal mode on all tty devices that are currently |
867 | open. */ | |
868 | ||
08633194 | 869 | void |
28d440ab KL |
870 | init_all_sys_modes (void) |
871 | { | |
28d7d09f | 872 | struct tty_display_info *tty; |
16c290d8 | 873 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 874 | init_sys_modes (tty); |
28d440ab KL |
875 | } |
876 | ||
da8e1115 KL |
877 | /* Initialize the terminal mode on the given tty device. */ |
878 | ||
28d440ab | 879 | void |
971de7fb | 880 | init_sys_modes (struct tty_display_info *tty_out) |
86a5659e | 881 | { |
91bac16a JB |
882 | struct emacs_tty tty; |
883 | ||
4ec5cb58 RS |
884 | Vtty_erase_char = Qnil; |
885 | ||
86a5659e JB |
886 | if (noninteractive) |
887 | return; | |
888 | ||
0b0d3e0b KL |
889 | if (!tty_out->output) |
890 | return; /* The tty is suspended. */ | |
cf84bb53 | 891 | |
2246281f KL |
892 | if (! tty_out->old_tty) |
893 | tty_out->old_tty = (struct emacs_tty *) xmalloc (sizeof (struct emacs_tty)); | |
cf84bb53 | 894 | |
0b0d3e0b | 895 | EMACS_GET_TTY (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 896 | |
2246281f | 897 | tty = *tty_out->old_tty; |
86a5659e | 898 | |
a7ebc409 | 899 | #if !defined (DOS_NT) |
2246281f | 900 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 901 | |
2246281f KL |
902 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
903 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
904 | #ifdef INLCR /* I'm just being cautious, |
905 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 906 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 907 | #endif |
86a5659e | 908 | #ifdef ISTRIP |
2246281f | 909 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 910 | #endif |
2246281f KL |
911 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
912 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 913 | #ifdef IEXTEN |
2246281f | 914 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 915 | #endif |
2246281f KL |
916 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
917 | if (tty_out->flow_control) | |
918 | { | |
919 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 920 | #ifdef IXANY |
2246281f | 921 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 922 | #endif /* IXANY */ |
2246281f KL |
923 | } |
924 | else | |
925 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
926 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
927 | on output */ | |
928 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 929 | #ifdef CS8 |
2246281f KL |
930 | if (tty_out->meta_key) |
931 | { | |
932 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
933 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
934 | } | |
86a5659e | 935 | #endif |
2246281f KL |
936 | if (tty_out->input == stdin) |
937 | { | |
938 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
939 | /* Set up C-g for both SIGQUIT and SIGINT. | |
940 | We don't know which we will get, but we handle both alike | |
941 | so which one it really gives us does not matter. */ | |
942 | tty.main.c_cc[VQUIT] = quit_char; | |
943 | } | |
944 | else | |
945 | { | |
946 | /* We normally don't get interrupt or quit signals from tty | |
947 | devices other than our controlling terminal; therefore, | |
948 | we must handle C-g as normal input. Unfortunately, this | |
949 | means that the interrupt and quit feature must be | |
950 | disabled on secondary ttys, or we would not even see the | |
951 | keypress. | |
cf84bb53 | 952 | |
2246281f KL |
953 | Note that even though emacsclient could have special code |
954 | to pass SIGINT to Emacs, we should _not_ enable | |
955 | interrupt/quit keys for emacsclient frames. This means | |
956 | that we can't break out of loops in C code from a | |
957 | secondary tty frame, but we can always decide what | |
958 | display the C-g came from, which is more important from a | |
959 | usability point of view. (Consider the case when two | |
960 | people work together using the same Emacs instance.) */ | |
961 | tty.main.c_cc[VINTR] = CDISABLE; | |
962 | tty.main.c_cc[VQUIT] = CDISABLE; | |
963 | } | |
964 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
965 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 966 | #ifdef VSWTCH |
2246281f | 967 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 968 | of C-z */ |
86a5659e | 969 | #endif /* VSWTCH */ |
cf84bb53 | 970 | |
86a5659e | 971 | #ifdef VSUSP |
a7ebc409 | 972 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */ |
86a5659e JB |
973 | #endif /* VSUSP */ |
974 | #ifdef V_DSUSP | |
a7ebc409 | 975 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */ |
86a5659e | 976 | #endif /* V_DSUSP */ |
e2b40c23 | 977 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 978 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 979 | #endif /* VDSUSP */ |
92c995de | 980 | #ifdef VLNEXT |
2246281f | 981 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
982 | #endif /* VLNEXT */ |
983 | #ifdef VREPRINT | |
2246281f | 984 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
985 | #endif /* VREPRINT */ |
986 | #ifdef VWERASE | |
2246281f | 987 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
988 | #endif /* VWERASE */ |
989 | #ifdef VDISCARD | |
2246281f | 990 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 991 | #endif /* VDISCARD */ |
c179a6d1 | 992 | |
2246281f KL |
993 | if (tty_out->flow_control) |
994 | { | |
421dd92f | 995 | #ifdef VSTART |
2246281f | 996 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
997 | #endif /* VSTART */ |
998 | #ifdef VSTOP | |
2246281f | 999 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1000 | #endif /* VSTOP */ |
2246281f KL |
1001 | } |
1002 | else | |
1003 | { | |
c179a6d1 | 1004 | #ifdef VSTART |
2246281f | 1005 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
1006 | #endif /* VSTART */ |
1007 | #ifdef VSTOP | |
2246281f | 1008 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 1009 | #endif /* VSTOP */ |
2246281f | 1010 | } |
c179a6d1 | 1011 | |
86a5659e | 1012 | #ifdef AIX |
f5272227 KL |
1013 | tty.main.c_cc[VSTRT] = CDISABLE; |
1014 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1015 | tty.main.c_cc[VSUSP] = CDISABLE; | |
1016 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
2246281f KL |
1017 | if (tty_out->flow_control) |
1018 | { | |
ac567c95 | 1019 | #ifdef VSTART |
2246281f | 1020 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
1021 | #endif /* VSTART */ |
1022 | #ifdef VSTOP | |
2246281f | 1023 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 1024 | #endif /* VSTOP */ |
2246281f KL |
1025 | } |
1026 | /* Also, PTY overloads NUL and BREAK. | |
1027 | don't ignore break, but don't signal either, so it looks like NUL. | |
1028 | This really serves a purpose only if running in an XTERM window | |
1029 | or via TELNET or the like, but does no harm elsewhere. */ | |
1030 | tty.main.c_iflag &= ~IGNBRK; | |
1031 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e | 1032 | #endif |
fe03522b | 1033 | #endif /* not DOS_NT */ |
cf84bb53 | 1034 | |
207bdbdb | 1035 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
1036 | if (!tty_out->term_initted) |
1037 | internal_terminal_init (); | |
4e389d32 | 1038 | dos_ttraw (tty_out); |
207bdbdb | 1039 | #endif |
91bac16a | 1040 | |
0b0d3e0b | 1041 | EMACS_SET_TTY (fileno (tty_out->input), &tty, 0); |
86a5659e | 1042 | |
2246281f KL |
1043 | /* This code added to insure that, if flow-control is not to be used, |
1044 | we have an unlocked terminal at the start. */ | |
91bac16a | 1045 | |
86a5659e | 1046 | #ifdef TCXONC |
0b0d3e0b | 1047 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e | 1048 | #endif |
86a5659e | 1049 | #ifdef TIOCSTART |
0b0d3e0b | 1050 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e | 1051 | #endif |
86a5659e | 1052 | |
a7ebc409 | 1053 | #if !defined (DOS_NT) |
51417996 | 1054 | #ifdef TCOON |
0b0d3e0b | 1055 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 1056 | #endif |
51417996 | 1057 | #endif |
d228f207 | 1058 | |
86a5659e | 1059 | #ifdef F_SETFL |
eb8c3be9 | 1060 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
2246281f | 1061 | if (interrupt_input) |
86a5659e | 1062 | { |
0b0d3e0b KL |
1063 | old_fcntl_owner[fileno (tty_out->input)] = |
1064 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
1065 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
1066 | init_sigio (fileno (tty_out->input)); | |
7e5a23bd | 1067 | #ifdef HAVE_GPM |
75a8734b | 1068 | if (gpm_tty == tty_out) |
3e748bcb | 1069 | { |
75a8734b | 1070 | /* Arrange for mouse events to give us SIGIO signals. */ |
3e748bcb | 1071 | fcntl (gpm_fd, F_SETOWN, getpid ()); |
57669cf1 | 1072 | fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK); |
3e748bcb NR |
1073 | init_sigio (gpm_fd); |
1074 | } | |
7e5a23bd | 1075 | #endif /* HAVE_GPM */ |
86a5659e JB |
1076 | } |
1077 | #endif /* F_GETOWN */ | |
1078 | #endif /* F_SETFL */ | |
1079 | ||
86a5659e JB |
1080 | #ifdef _IOFBF |
1081 | /* This symbol is defined on recent USG systems. | |
1082 | Someone says without this call USG won't really buffer the file | |
1083 | even with a call to setbuf. */ | |
0b0d3e0b | 1084 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1085 | #else |
0b0d3e0b | 1086 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 1087 | #endif |
4d553a13 | 1088 | |
69fb5031 JR |
1089 | if (tty_out->terminal->set_terminal_modes_hook) |
1090 | tty_out->terminal->set_terminal_modes_hook (tty_out->terminal); | |
4b311aaf | 1091 | |
9628b887 KL |
1092 | if (!tty_out->term_initted) |
1093 | { | |
1094 | Lisp_Object tail, frame; | |
1095 | FOR_EACH_FRAME (tail, frame) | |
1096 | { | |
daf01701 | 1097 | /* XXX This needs to be revised. */ |
9628b887 KL |
1098 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1099 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1100 | init_frame_faces (XFRAME (frame)); | |
1101 | } | |
1102 | } | |
045942b2 | 1103 | |
9628b887 | 1104 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1105 | { |
855a0da7 SM |
1106 | /* We used to call "direct_output_forward_char(0)" here, |
1107 | but it's not clear why, since it may not do anything anyway. */ | |
86a5659e JB |
1108 | } |
1109 | else | |
1110 | { | |
9628b887 | 1111 | Lisp_Object tail, frame; |
0137dbf7 | 1112 | frame_garbaged = 1; |
9628b887 KL |
1113 | FOR_EACH_FRAME (tail, frame) |
1114 | { | |
7ab98847 EZ |
1115 | if ((FRAME_TERMCAP_P (XFRAME (frame)) |
1116 | || FRAME_MSDOS_P (XFRAME (frame))) | |
9628b887 KL |
1117 | && FRAME_TTY (XFRAME (frame)) == tty_out) |
1118 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1119 | } | |
86a5659e | 1120 | } |
91bac16a | 1121 | |
9628b887 | 1122 | tty_out->term_initted = 1; |
86a5659e JB |
1123 | } |
1124 | ||
1125 | /* Return nonzero if safe to use tabs in output. | |
1126 | At the time this is called, init_sys_modes has not been done yet. */ | |
177c0ea7 | 1127 | |
dfcf069d | 1128 | int |
16c290d8 | 1129 | tabs_safe_p (int fd) |
86a5659e | 1130 | { |
6548cf00 | 1131 | struct emacs_tty etty; |
91bac16a | 1132 | |
16c290d8 | 1133 | EMACS_GET_TTY (fd, &etty); |
6548cf00 | 1134 | return EMACS_TTY_TABS_OK (&etty); |
86a5659e | 1135 | } |
73d5358f | 1136 | \f |
86a5659e | 1137 | /* Get terminal size from system. |
73d5358f RS |
1138 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1139 | We store 0 if there's no valid information. */ | |
86a5659e | 1140 | |
08633194 | 1141 | void |
16c290d8 | 1142 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1143 | { |
86a5659e | 1144 | |
86a5659e | 1145 | #ifdef TIOCGWINSZ |
91bac16a JB |
1146 | |
1147 | /* BSD-style. */ | |
86a5659e | 1148 | struct winsize size; |
91bac16a | 1149 | |
16c290d8 | 1150 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1151 | *widthp = *heightp = 0; |
1152 | else | |
1153 | { | |
1154 | *widthp = size.ws_col; | |
1155 | *heightp = size.ws_row; | |
1156 | } | |
1157 | ||
1158 | #else | |
1159 | #ifdef TIOCGSIZE | |
1160 | ||
1161 | /* SunOS - style. */ | |
177c0ea7 | 1162 | struct ttysize size; |
91bac16a | 1163 | |
16c290d8 | 1164 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1165 | *widthp = *heightp = 0; |
1166 | else | |
1167 | { | |
1168 | *widthp = size.ts_cols; | |
1169 | *heightp = size.ts_lines; | |
1170 | } | |
1171 | ||
207bdbdb RS |
1172 | #else |
1173 | #ifdef MSDOS | |
1174 | *widthp = ScreenCols (); | |
1175 | *heightp = ScreenRows (); | |
86a5659e JB |
1176 | #else /* system doesn't know size */ |
1177 | *widthp = 0; | |
1178 | *heightp = 0; | |
207bdbdb | 1179 | #endif |
91bac16a JB |
1180 | #endif /* not SunOS-style */ |
1181 | #endif /* not BSD-style */ | |
86a5659e | 1182 | } |
91bac16a | 1183 | |
73d5358f RS |
1184 | /* Set the logical window size associated with descriptor FD |
1185 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1186 | ||
1187 | int | |
971de7fb | 1188 | set_window_size (int fd, int height, int width) |
73d5358f RS |
1189 | { |
1190 | #ifdef TIOCSWINSZ | |
1191 | ||
1192 | /* BSD-style. */ | |
1193 | struct winsize size; | |
1194 | size.ws_row = height; | |
1195 | size.ws_col = width; | |
1196 | ||
1197 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1198 | return 0; /* error */ | |
1199 | else | |
1200 | return 1; | |
1201 | ||
1202 | #else | |
1203 | #ifdef TIOCSSIZE | |
1204 | ||
1205 | /* SunOS - style. */ | |
177c0ea7 | 1206 | struct ttysize size; |
73d5358f RS |
1207 | size.ts_lines = height; |
1208 | size.ts_cols = width; | |
1209 | ||
1210 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1211 | return 0; | |
1212 | else | |
1213 | return 1; | |
1214 | #else | |
1215 | return -1; | |
1216 | #endif /* not SunOS-style */ | |
1217 | #endif /* not BSD-style */ | |
1218 | } | |
1219 | ||
86a5659e | 1220 | \f |
da8e1115 KL |
1221 | |
1222 | /* Prepare all terminal devices for exiting Emacs. */ | |
1223 | ||
28d440ab KL |
1224 | void |
1225 | reset_all_sys_modes (void) | |
1226 | { | |
28d7d09f | 1227 | struct tty_display_info *tty; |
16c290d8 | 1228 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1229 | reset_sys_modes (tty); |
28d440ab KL |
1230 | } |
1231 | ||
0a125897 | 1232 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1233 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1234 | |
08633194 | 1235 | void |
971de7fb | 1236 | reset_sys_modes (struct tty_display_info *tty_out) |
86a5659e JB |
1237 | { |
1238 | if (noninteractive) | |
1239 | { | |
1240 | fflush (stdout); | |
1241 | return; | |
1242 | } | |
9628b887 | 1243 | if (!tty_out->term_initted) |
86a5659e | 1244 | return; |
da8e1115 | 1245 | |
0b0d3e0b KL |
1246 | if (!tty_out->output) |
1247 | return; /* The tty is suspended. */ | |
cf84bb53 | 1248 | |
da8e1115 KL |
1249 | /* Go to and clear the last line of the terminal. */ |
1250 | ||
0a125897 | 1251 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
cf84bb53 | 1252 | |
da8e1115 KL |
1253 | /* Code adapted from tty_clear_end_of_line. */ |
1254 | if (tty_out->TS_clr_line) | |
1255 | { | |
1256 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1257 | } | |
1258 | else | |
1259 | { /* have to do it the hard way */ | |
1260 | int i; | |
ed8dad6b | 1261 | tty_turn_off_insert (tty_out); |
cf84bb53 | 1262 | |
da8e1115 | 1263 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1264 | { |
1265 | fputc (' ', tty_out->output); | |
1266 | } | |
da8e1115 | 1267 | } |
cf84bb53 | 1268 | |
0a125897 | 1269 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 | 1270 | fflush (tty_out->output); |
cf84bb53 | 1271 | |
69fb5031 JR |
1272 | if (tty_out->terminal->reset_terminal_modes_hook) |
1273 | tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal); | |
2f98e6e3 | 1274 | |
2a633456 | 1275 | #ifdef BSD_SYSTEM |
86a5659e | 1276 | /* Avoid possible loss of output when changing terminal modes. */ |
0b0d3e0b | 1277 | fsync (fileno (tty_out->output)); |
86a5659e | 1278 | #endif |
91bac16a | 1279 | |
86a5659e | 1280 | #ifdef F_SETFL |
eb8c3be9 | 1281 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1282 | if (interrupt_input) |
1283 | { | |
0b0d3e0b KL |
1284 | reset_sigio (fileno (tty_out->input)); |
1285 | fcntl (fileno (tty_out->input), F_SETOWN, | |
1286 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
1287 | } |
1288 | #endif /* F_SETOWN */ | |
a6b00318 | 1289 | #ifdef O_NDELAY |
0b0d3e0b KL |
1290 | fcntl (fileno (tty_out->input), F_SETFL, |
1291 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NDELAY); | |
a6b00318 | 1292 | #endif |
86a5659e | 1293 | #endif /* F_SETFL */ |
91bac16a | 1294 | |
fca177d4 | 1295 | if (tty_out->old_tty) |
0b0d3e0b | 1296 | while (EMACS_SET_TTY (fileno (tty_out->input), |
fca177d4 | 1297 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 1298 | ; |
86a5659e | 1299 | |
207bdbdb RS |
1300 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1301 | dos_ttcooked (); | |
1302 | #endif | |
1303 | ||
86a5659e JB |
1304 | } |
1305 | \f | |
1306 | #ifdef HAVE_PTYS | |
1307 | ||
1308 | /* Set up the proper status flags for use of a pty. */ | |
1309 | ||
08633194 | 1310 | void |
971de7fb | 1311 | setup_pty (int fd) |
86a5659e JB |
1312 | { |
1313 | /* I'm told that TOICREMOTE does not mean control chars | |
1314 | "can't be sent" but rather that they don't have | |
1315 | input-editing or signaling effects. | |
1316 | That should be good, because we have other ways | |
1317 | to do those things in Emacs. | |
1318 | However, telnet mode seems not to work on 4.2. | |
1319 | So TIOCREMOTE is turned off now. */ | |
1320 | ||
1321 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1322 | will hang. In particular, the "timeout" feature (which | |
1323 | causes a read to return if there is no data available) | |
1324 | does this. Also it is known that telnet mode will hang | |
1325 | in such a way that Emacs must be stopped (perhaps this | |
1326 | is the same problem). | |
177c0ea7 | 1327 | |
86a5659e JB |
1328 | If TIOCREMOTE is turned off, then there is a bug in |
1329 | hp-ux which sometimes loses data. Apparently the | |
1330 | code which blocks the master process when the internal | |
1331 | buffer fills up does not work. Other than this, | |
1332 | though, everything else seems to work fine. | |
177c0ea7 | 1333 | |
86a5659e JB |
1334 | Since the latter lossage is more benign, we may as well |
1335 | lose that way. -- cph */ | |
1336 | #ifdef FIONBIO | |
bdee2ef3 | 1337 | #if defined(UNIX98_PTYS) |
86a5659e JB |
1338 | { |
1339 | int on = 1; | |
1340 | ioctl (fd, FIONBIO, &on); | |
1341 | } | |
1342 | #endif | |
1343 | #endif | |
86a5659e JB |
1344 | } |
1345 | #endif /* HAVE_PTYS */ | |
1346 | \f | |
c0c86835 KH |
1347 | /* init_system_name sets up the string for the Lisp function |
1348 | system-name to return. */ | |
86a5659e | 1349 | |
c0c86835 | 1350 | extern Lisp_Object Vsystem_name; |
86a5659e | 1351 | |
f8a80313 RS |
1352 | #ifdef HAVE_SOCKETS |
1353 | #include <sys/socket.h> | |
1354 | #include <netdb.h> | |
1355 | #endif /* HAVE_SOCKETS */ | |
f8a80313 | 1356 | |
8581cd64 KH |
1357 | #ifdef TRY_AGAIN |
1358 | #ifndef HAVE_H_ERRNO | |
1359 | extern int h_errno; | |
1360 | #endif | |
1361 | #endif /* TRY_AGAIN */ | |
1362 | ||
c0c86835 | 1363 | void |
971de7fb | 1364 | init_system_name (void) |
86a5659e | 1365 | { |
210b2b4f | 1366 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
1367 | struct utsname uts; |
1368 | uname (&uts); | |
1369 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 1370 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 1371 | unsigned int hostname_size = 256; |
c0c86835 KH |
1372 | char *hostname = (char *) alloca (hostname_size); |
1373 | ||
1374 | /* Try to get the host name; if the buffer is too short, try | |
1375 | again. Apparently, the only indication gethostname gives of | |
1376 | whether the buffer was large enough is the presence or absence | |
1377 | of a '\0' in the string. Eech. */ | |
1378 | for (;;) | |
1379 | { | |
1380 | gethostname (hostname, hostname_size - 1); | |
1381 | hostname[hostname_size - 1] = '\0'; | |
1382 | ||
1383 | /* Was the buffer large enough for the '\0'? */ | |
1384 | if (strlen (hostname) < hostname_size - 1) | |
1385 | break; | |
1386 | ||
1387 | hostname_size <<= 1; | |
1388 | hostname = (char *) alloca (hostname_size); | |
1389 | } | |
67004ffb | 1390 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
1391 | /* Turn the hostname into the official, fully-qualified hostname. |
1392 | Don't do this if we're going to dump; this can confuse system | |
1393 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 1394 | #ifndef CANNOT_DUMP |
c0c86835 | 1395 | if (initialized) |
67004ffb | 1396 | #endif /* not CANNOT_DUMP */ |
8966b757 | 1397 | if (! strchr (hostname, '.')) |
960d894c | 1398 | { |
960d894c | 1399 | int count; |
3d66b985 JD |
1400 | #ifdef HAVE_GETADDRINFO |
1401 | struct addrinfo *res; | |
1402 | struct addrinfo hints; | |
1403 | int ret; | |
1404 | ||
cf84bb53 | 1405 | memset (&hints, 0, sizeof (hints)); |
3d66b985 JD |
1406 | hints.ai_socktype = SOCK_STREAM; |
1407 | hints.ai_flags = AI_CANONNAME; | |
1408 | ||
960d894c KH |
1409 | for (count = 0;; count++) |
1410 | { | |
3d66b985 JD |
1411 | if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0 |
1412 | || ret != EAI_AGAIN) | |
1413 | break; | |
1414 | ||
1415 | if (count >= 5) | |
1416 | break; | |
1417 | Fsleep_for (make_number (1), Qnil); | |
1418 | } | |
1419 | ||
1420 | if (ret == 0) | |
1421 | { | |
1422 | struct addrinfo *it = res; | |
1423 | while (it) | |
1424 | { | |
1425 | char *fqdn = it->ai_canonname; | |
8966b757 | 1426 | if (fqdn && strchr (fqdn, '.') |
3d66b985 JD |
1427 | && strcmp (fqdn, "localhost.localdomain") != 0) |
1428 | break; | |
1429 | it = it->ai_next; | |
1430 | } | |
1431 | if (it) | |
1432 | { | |
1433 | hostname = alloca (strlen (it->ai_canonname) + 1); | |
1434 | strcpy (hostname, it->ai_canonname); | |
1435 | } | |
1436 | freeaddrinfo (res); | |
1437 | } | |
1438 | #else /* !HAVE_GETADDRINFO */ | |
1439 | struct hostent *hp; | |
1440 | for (count = 0;; count++) | |
1441 | { | |
1442 | ||
e24f1d55 | 1443 | #ifdef TRY_AGAIN |
960d894c | 1444 | h_errno = 0; |
e24f1d55 | 1445 | #endif |
960d894c | 1446 | hp = gethostbyname (hostname); |
efa04277 | 1447 | #ifdef TRY_AGAIN |
960d894c KH |
1448 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
1449 | #endif | |
3d66b985 | 1450 | |
960d894c | 1451 | break; |
3d66b985 | 1452 | |
960d894c KH |
1453 | if (count >= 5) |
1454 | break; | |
1455 | Fsleep_for (make_number (1), Qnil); | |
1456 | } | |
3d66b985 | 1457 | |
960d894c KH |
1458 | if (hp) |
1459 | { | |
1460 | char *fqdn = (char *) hp->h_name; | |
960d894c | 1461 | |
8966b757 | 1462 | if (!strchr (fqdn, '.')) |
960d894c KH |
1463 | { |
1464 | /* We still don't have a fully qualified domain name. | |
1465 | Try to find one in the list of alternate names */ | |
1466 | char **alias = hp->h_aliases; | |
923721f4 | 1467 | while (*alias |
8966b757 | 1468 | && (!strchr (*alias, '.') |
923721f4 | 1469 | || !strcmp (*alias, "localhost.localdomain"))) |
960d894c KH |
1470 | alias++; |
1471 | if (*alias) | |
1472 | fqdn = *alias; | |
1473 | } | |
1474 | hostname = fqdn; | |
960d894c | 1475 | } |
3d66b985 | 1476 | #endif /* !HAVE_GETADDRINFO */ |
960d894c | 1477 | } |
67004ffb | 1478 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 1479 | Vsystem_name = build_string (hostname); |
67004ffb | 1480 | #endif /* HAVE_GETHOSTNAME */ |
c0c86835 KH |
1481 | { |
1482 | unsigned char *p; | |
d5db4077 | 1483 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
1484 | if (*p == ' ' || *p == '\t') |
1485 | *p = '-'; | |
1486 | } | |
67004ffb | 1487 | } |
86a5659e | 1488 | \f |
7964ba9e | 1489 | #ifndef MSDOS |
4624371d | 1490 | #if !defined (HAVE_SELECT) |
86a5659e | 1491 | |
86d1f23a KH |
1492 | #include "sysselect.h" |
1493 | #undef select | |
1494 | ||
1495 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
1496 | /* Cause explanatory error message at compile time, |
1497 | since the select emulation is not good enough for X. */ | |
1498 | int *x = &x_windows_lose_if_no_select_system_call; | |
1499 | #endif | |
1500 | ||
1501 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
1502 | * Only checks read descriptors. | |
1503 | */ | |
1504 | /* How long to wait between checking fds in select */ | |
1505 | #define SELECT_PAUSE 1 | |
1506 | int select_alarmed; | |
1507 | ||
1508 | /* For longjmp'ing back to read_input_waiting. */ | |
1509 | ||
1510 | jmp_buf read_alarm_throw; | |
1511 | ||
1512 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
1513 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
1514 | ||
1515 | int read_alarm_should_throw; | |
1516 | ||
cf84bb53 JB |
1517 | void |
1518 | select_alarm (int ignore) | |
86a5659e JB |
1519 | { |
1520 | select_alarmed = 1; | |
86a5659e | 1521 | signal (SIGALRM, SIG_IGN); |
333f1b6f | 1522 | SIGNAL_THREAD_CHECK (SIGALRM); |
86a5659e JB |
1523 | if (read_alarm_should_throw) |
1524 | longjmp (read_alarm_throw, 1); | |
1525 | } | |
1526 | ||
9d9f1812 | 1527 | #ifndef WINDOWSNT |
86a5659e JB |
1528 | /* Only rfds are checked. */ |
1529 | int | |
cf84bb53 JB |
1530 | sys_select (int nfds, |
1531 | SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, | |
1532 | EMACS_TIME *timeout) | |
86a5659e | 1533 | { |
2246281f | 1534 | /* XXX This needs to be updated for multi-tty support. Is there |
cf84bb53 | 1535 | anybody who needs to emulate select these days? */ |
2246281f | 1536 | int ravail = 0; |
86d1f23a KH |
1537 | SELECT_TYPE orfds; |
1538 | int timeoutval; | |
1539 | int *local_timeout; | |
86a5659e | 1540 | extern int proc_buffered_char[]; |
86a5659e | 1541 | extern int process_tick, update_tick; |
86a5659e JB |
1542 | unsigned char buf; |
1543 | ||
86d1f23a KH |
1544 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
1545 | /* If we're using X, then the native select will work; we only need the | |
1546 | emulation for non-X usage. */ | |
2246281f | 1547 | if (!NILP (Vinitial_window_system)) |
86d1f23a KH |
1548 | return select (nfds, rfds, wfds, efds, timeout); |
1549 | #endif | |
1550 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
1551 | local_timeout = &timeoutval; | |
1552 | FD_ZERO (&orfds); | |
86a5659e JB |
1553 | if (rfds) |
1554 | { | |
1555 | orfds = *rfds; | |
86d1f23a | 1556 | FD_ZERO (rfds); |
86a5659e JB |
1557 | } |
1558 | if (wfds) | |
86d1f23a | 1559 | FD_ZERO (wfds); |
86a5659e | 1560 | if (efds) |
86d1f23a | 1561 | FD_ZERO (efds); |
86a5659e JB |
1562 | |
1563 | /* If we are looking only for the terminal, with no timeout, | |
1564 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
1565 | if (*local_timeout == 100000 && process_tick == update_tick |
1566 | && FD_ISSET (0, &orfds)) | |
86a5659e | 1567 | { |
86d1f23a KH |
1568 | int fd; |
1569 | for (fd = 1; fd < nfds; ++fd) | |
1570 | if (FD_ISSET (fd, &orfds)) | |
1571 | goto hardway; | |
86a5659e JB |
1572 | if (! detect_input_pending ()) |
1573 | read_input_waiting (); | |
86d1f23a | 1574 | FD_SET (0, rfds); |
86a5659e JB |
1575 | return 1; |
1576 | } | |
1577 | ||
86d1f23a | 1578 | hardway: |
86a5659e JB |
1579 | /* Once a second, till the timer expires, check all the flagged read |
1580 | * descriptors to see if any input is available. If there is some then | |
1581 | * set the corresponding bit in the return copy of rfds. | |
177c0ea7 | 1582 | */ |
86a5659e JB |
1583 | while (1) |
1584 | { | |
86d1f23a | 1585 | register int to_check, fd; |
86a5659e JB |
1586 | |
1587 | if (rfds) | |
1588 | { | |
86d1f23a | 1589 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 1590 | { |
86d1f23a | 1591 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
1592 | { |
1593 | int avail = 0, status = 0; | |
1594 | ||
86d1f23a | 1595 | if (fd == 0) |
86a5659e JB |
1596 | avail = detect_input_pending (); /* Special keyboard handler */ |
1597 | else | |
1598 | { | |
1599 | #ifdef FIONREAD | |
1600 | status = ioctl (fd, FIONREAD, &avail); | |
1601 | #else /* no FIONREAD */ | |
1602 | /* Hoping it will return -1 if nothing available | |
1603 | or 0 if all 0 chars requested are read. */ | |
1604 | if (proc_buffered_char[fd] >= 0) | |
1605 | avail = 1; | |
1606 | else | |
1607 | { | |
1608 | avail = read (fd, &buf, 1); | |
1609 | if (avail > 0) | |
1610 | proc_buffered_char[fd] = buf; | |
1611 | } | |
1612 | #endif /* no FIONREAD */ | |
1613 | } | |
1614 | if (status >= 0 && avail > 0) | |
1615 | { | |
86d1f23a | 1616 | FD_SET (fd, rfds); |
86a5659e JB |
1617 | ravail++; |
1618 | } | |
1619 | } | |
1620 | } | |
1621 | } | |
1622 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
1623 | break; | |
ffdcc91d GM |
1624 | |
1625 | turn_on_atimers (0); | |
1626 | signal (SIGALRM, select_alarm); | |
86a5659e JB |
1627 | select_alarmed = 0; |
1628 | alarm (SELECT_PAUSE); | |
177c0ea7 | 1629 | |
86a5659e JB |
1630 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
1631 | while (select_alarmed == 0 && *local_timeout != 0 | |
1632 | && process_tick == update_tick) | |
1633 | { | |
1634 | /* If we are interested in terminal input, | |
1635 | wait by reading the terminal. | |
1636 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 1637 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
1638 | { |
1639 | read_input_waiting (); | |
1640 | if (detect_input_pending ()) | |
1641 | select_alarmed = 1; | |
1642 | } | |
1643 | else | |
1644 | pause (); | |
1645 | } | |
1646 | (*local_timeout) -= SELECT_PAUSE; | |
177c0ea7 | 1647 | |
ffdcc91d GM |
1648 | /* Reset the old alarm if there was one. */ |
1649 | turn_on_atimers (1); | |
177c0ea7 | 1650 | |
86a5659e JB |
1651 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
1652 | break; | |
1653 | } | |
1654 | return ravail; | |
1655 | } | |
30790a37 | 1656 | #endif /* not WINDOWSNT */ |
86a5659e JB |
1657 | |
1658 | /* Read keyboard input into the standard buffer, | |
1659 | waiting for at least one character. */ | |
1660 | ||
dfcf069d | 1661 | void |
cf84bb53 | 1662 | read_input_waiting (void) |
86a5659e | 1663 | { |
2246281f KL |
1664 | /* XXX This needs to be updated for multi-tty support. Is there |
1665 | anybody who needs to emulate select these days? */ | |
34567704 | 1666 | int nread, i; |
86a5659e JB |
1667 | |
1668 | if (read_socket_hook) | |
1669 | { | |
9f893fc6 KS |
1670 | struct input_event hold_quit; |
1671 | ||
1672 | EVENT_INIT (hold_quit); | |
1673 | hold_quit.kind = NO_EVENT; | |
1674 | ||
86a5659e JB |
1675 | read_alarm_should_throw = 0; |
1676 | if (! setjmp (read_alarm_throw)) | |
9f893fc6 | 1677 | nread = (*read_socket_hook) (0, 1, &hold_quit); |
86a5659e JB |
1678 | else |
1679 | nread = -1; | |
f4a7e5bd | 1680 | |
9f893fc6 KS |
1681 | if (hold_quit.kind != NO_EVENT) |
1682 | kbd_buffer_store_event (&hold_quit); | |
86a5659e JB |
1683 | } |
1684 | else | |
86a5659e | 1685 | { |
50acda85 | 1686 | struct input_event e; |
f4a7e5bd RS |
1687 | char buf[3]; |
1688 | nread = read (fileno (stdin), buf, 1); | |
50acda85 | 1689 | EVENT_INIT (e); |
f4a7e5bd RS |
1690 | |
1691 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
e43bd4f5 | 1692 | e.kind = ASCII_KEYSTROKE_EVENT; |
2d064114 | 1693 | e.frame_or_window = selected_frame; |
f4a7e5bd RS |
1694 | e.modifiers = 0; |
1695 | for (i = 0; i < nread; i++) | |
a00d5589 | 1696 | { |
f4a7e5bd RS |
1697 | /* Convert chars > 0177 to meta events if desired. |
1698 | We do this under the same conditions that read_avail_input does. */ | |
1699 | if (read_socket_hook == 0) | |
1700 | { | |
1701 | /* If the user says she has a meta key, then believe her. */ | |
1702 | if (meta_key == 1 && (buf[i] & 0x80)) | |
1703 | e.modifiers = meta_modifier; | |
1704 | if (meta_key != 2) | |
1705 | buf[i] &= ~0x80; | |
1706 | } | |
b95520f5 | 1707 | |
c81d47b4 | 1708 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
1709 | kbd_buffer_store_event (&e); |
1710 | /* Don't look at input that follows a C-g too closely. | |
1711 | This reduces lossage due to autorepeat on C-g. */ | |
1712 | if (buf[i] == quit_char) | |
1713 | break; | |
1714 | } | |
86a5659e JB |
1715 | } |
1716 | } | |
1717 | ||
4624371d | 1718 | #if !defined (HAVE_SELECT) |
819b8f00 KL |
1719 | #define select sys_select |
1720 | #endif | |
1721 | ||
86a5659e | 1722 | #endif /* not HAVE_SELECT */ |
7964ba9e | 1723 | #endif /* not MSDOS */ |
86a5659e | 1724 | \f |
86a5659e JB |
1725 | /* POSIX signals support - DJB */ |
1726 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
1727 | ||
c639b0e3 | 1728 | sigset_t empty_mask, full_mask; |
86a5659e | 1729 | |
d6dae14b EZ |
1730 | #ifndef WINDOWSNT |
1731 | ||
86a5659e JB |
1732 | signal_handler_t |
1733 | sys_signal (int signal_number, signal_handler_t action) | |
1734 | { | |
c639b0e3 | 1735 | struct sigaction new_action, old_action; |
86a5659e | 1736 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 1737 | new_action.sa_handler = action; |
ef874e3d AS |
1738 | new_action.sa_flags = 0; |
1739 | #if defined (SA_RESTART) | |
25ab68af | 1740 | /* Emacs mostly works better with restartable system services. If this |
55fafcf0 RS |
1741 | flag exists, we probably want to turn it on here. |
1742 | However, on some systems this resets the timeout of `select' | |
1743 | which means that `select' never finishes if it keeps getting signals. | |
1744 | BROKEN_SA_RESTART is defined on those systems. */ | |
275464e7 SM |
1745 | /* It's not clear why the comment above says "mostly works better". --Stef |
1746 | When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll | |
1747 | for pending input so we need long-running syscalls to be interrupted | |
1748 | after a signal that sets the interrupt_input_pending flag. */ | |
766f52ec AS |
1749 | /* Non-interactive keyboard input goes through stdio, where we always |
1750 | want restartable system calls. */ | |
ef874e3d AS |
1751 | # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT) |
1752 | if (noninteractive) | |
1753 | # endif | |
1754 | new_action.sa_flags = SA_RESTART; | |
25ab68af | 1755 | #endif |
d32b2f3c | 1756 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 1757 | return (old_action.sa_handler); |
86a5659e JB |
1758 | } |
1759 | ||
d6dae14b EZ |
1760 | #endif /* WINDOWSNT */ |
1761 | ||
e065a56e JB |
1762 | #ifndef __GNUC__ |
1763 | /* If we're compiling with GCC, we don't need this function, since it | |
1764 | can be written as a macro. */ | |
1765 | sigset_t | |
1766 | sys_sigmask (int sig) | |
1767 | { | |
1768 | sigset_t mask; | |
1769 | sigemptyset (&mask); | |
1770 | sigaddset (&mask, sig); | |
1771 | return mask; | |
1772 | } | |
1773 | #endif | |
1774 | ||
86a5659e JB |
1775 | /* I'd like to have these guys return pointers to the mask storage in here, |
1776 | but there'd be trouble if the code was saving multiple masks. I'll be | |
1777 | safe and pass the structure. It normally won't be more than 2 bytes | |
1778 | anyhow. - DJB */ | |
1779 | ||
1780 | sigset_t | |
1781 | sys_sigblock (sigset_t new_mask) | |
1782 | { | |
1783 | sigset_t old_mask; | |
1784 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
1785 | return (old_mask); | |
1786 | } | |
1787 | ||
1788 | sigset_t | |
1789 | sys_sigunblock (sigset_t new_mask) | |
1790 | { | |
1791 | sigset_t old_mask; | |
1792 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
1793 | return (old_mask); | |
1794 | } | |
1795 | ||
1796 | sigset_t | |
1797 | sys_sigsetmask (sigset_t new_mask) | |
1798 | { | |
1799 | sigset_t old_mask; | |
1800 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
1801 | return (old_mask); | |
1802 | } | |
1803 | ||
86a5659e | 1804 | \f |
b80263be | 1805 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
1806 | static char *my_sys_siglist[NSIG]; |
1807 | # ifdef sys_siglist | |
1808 | # undef sys_siglist | |
1809 | # endif | |
1810 | # define sys_siglist my_sys_siglist | |
1811 | #endif | |
1812 | ||
1813 | void | |
971de7fb | 1814 | init_signals (void) |
ca9c0567 | 1815 | { |
ca9c0567 PE |
1816 | sigemptyset (&empty_mask); |
1817 | sigfillset (&full_mask); | |
ca9c0567 | 1818 | |
b80263be | 1819 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
1820 | if (! initialized) |
1821 | { | |
1822 | # ifdef SIGABRT | |
1823 | sys_siglist[SIGABRT] = "Aborted"; | |
1824 | # endif | |
1825 | # ifdef SIGAIO | |
1826 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
1827 | # endif | |
1828 | # ifdef SIGALRM | |
1829 | sys_siglist[SIGALRM] = "Alarm clock"; | |
1830 | # endif | |
1831 | # ifdef SIGBUS | |
1832 | sys_siglist[SIGBUS] = "Bus error"; | |
1833 | # endif | |
1834 | # ifdef SIGCLD | |
1835 | sys_siglist[SIGCLD] = "Child status changed"; | |
1836 | # endif | |
1837 | # ifdef SIGCHLD | |
1838 | sys_siglist[SIGCHLD] = "Child status changed"; | |
1839 | # endif | |
1840 | # ifdef SIGCONT | |
1841 | sys_siglist[SIGCONT] = "Continued"; | |
1842 | # endif | |
1843 | # ifdef SIGDANGER | |
1844 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
1845 | # endif | |
1846 | # ifdef SIGDGNOTIFY | |
1847 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
1848 | # endif | |
1849 | # ifdef SIGEMT | |
1850 | sys_siglist[SIGEMT] = "Emulation trap"; | |
1851 | # endif | |
1852 | # ifdef SIGFPE | |
1853 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
1854 | # endif | |
1855 | # ifdef SIGFREEZE | |
1856 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
1857 | # endif | |
1858 | # ifdef SIGGRANT | |
1859 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
1860 | # endif | |
1861 | # ifdef SIGHUP | |
1862 | sys_siglist[SIGHUP] = "Hangup"; | |
1863 | # endif | |
1864 | # ifdef SIGILL | |
1865 | sys_siglist[SIGILL] = "Illegal instruction"; | |
1866 | # endif | |
1867 | # ifdef SIGINT | |
1868 | sys_siglist[SIGINT] = "Interrupt"; | |
1869 | # endif | |
1870 | # ifdef SIGIO | |
1871 | sys_siglist[SIGIO] = "I/O possible"; | |
1872 | # endif | |
1873 | # ifdef SIGIOINT | |
1874 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
1875 | # endif | |
1876 | # ifdef SIGIOT | |
1877 | sys_siglist[SIGIOT] = "IOT trap"; | |
1878 | # endif | |
1879 | # ifdef SIGKILL | |
1880 | sys_siglist[SIGKILL] = "Killed"; | |
1881 | # endif | |
1882 | # ifdef SIGLOST | |
1883 | sys_siglist[SIGLOST] = "Resource lost"; | |
1884 | # endif | |
1885 | # ifdef SIGLWP | |
1886 | sys_siglist[SIGLWP] = "SIGLWP"; | |
1887 | # endif | |
1888 | # ifdef SIGMSG | |
1889 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
1890 | # endif | |
1891 | # ifdef SIGPHONE | |
1892 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
1893 | # endif | |
1894 | # ifdef SIGPIPE | |
1895 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
1896 | # endif | |
1897 | # ifdef SIGPOLL | |
1898 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
1899 | # endif | |
1900 | # ifdef SIGPROF | |
1901 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
1902 | # endif | |
1903 | # ifdef SIGPTY | |
1904 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
1905 | # endif | |
1906 | # ifdef SIGPWR | |
1907 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
1908 | # endif | |
1909 | # ifdef SIGQUIT | |
1910 | sys_siglist[SIGQUIT] = "Quit"; | |
1911 | # endif | |
1912 | # ifdef SIGRETRACT | |
1913 | sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; | |
1914 | # endif | |
1915 | # ifdef SIGSAK | |
1916 | sys_siglist[SIGSAK] = "Secure attention"; | |
1917 | # endif | |
1918 | # ifdef SIGSEGV | |
1919 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
1920 | # endif | |
1921 | # ifdef SIGSOUND | |
1922 | sys_siglist[SIGSOUND] = "Sound completed"; | |
1923 | # endif | |
1924 | # ifdef SIGSTOP | |
1925 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
1926 | # endif | |
1927 | # ifdef SIGSTP | |
1928 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
1929 | # endif | |
1930 | # ifdef SIGSYS | |
1931 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
1932 | # endif | |
1933 | # ifdef SIGTERM | |
1934 | sys_siglist[SIGTERM] = "Terminated"; | |
1935 | # endif | |
1936 | # ifdef SIGTHAW | |
1937 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
1938 | # endif | |
1939 | # ifdef SIGTRAP | |
1940 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
1941 | # endif | |
1942 | # ifdef SIGTSTP | |
1943 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
1944 | # endif | |
1945 | # ifdef SIGTTIN | |
1946 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
1947 | # endif | |
1948 | # ifdef SIGTTOU | |
1949 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
1950 | # endif | |
1951 | # ifdef SIGURG | |
1952 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
1953 | # endif | |
1954 | # ifdef SIGUSR1 | |
1955 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
1956 | # endif | |
1957 | # ifdef SIGUSR2 | |
1958 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
1959 | # endif | |
1960 | # ifdef SIGVTALRM | |
1961 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
1962 | # endif | |
1963 | # ifdef SIGWAITING | |
1964 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
1965 | # endif | |
1966 | # ifdef SIGWINCH | |
1967 | sys_siglist[SIGWINCH] = "Window size changed"; | |
1968 | # endif | |
1969 | # ifdef SIGWIND | |
1970 | sys_siglist[SIGWIND] = "SIGWIND"; | |
1971 | # endif | |
1972 | # ifdef SIGXCPU | |
1973 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
1974 | # endif | |
1975 | # ifdef SIGXFSZ | |
1976 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
1977 | # endif | |
1978 | } | |
b80263be | 1979 | #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */ |
ca9c0567 PE |
1980 | } |
1981 | \f | |
9927a7b1 | 1982 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
1983 | #ifdef random |
1984 | #define HAVE_RANDOM | |
1985 | #endif | |
1986 | #endif | |
1987 | ||
1988 | /* Figure out how many bits the system's random number generator uses. | |
1989 | `random' and `lrand48' are assumed to return 31 usable bits. | |
1990 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
1991 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
1992 | ||
1993 | #ifndef RAND_BITS | |
1994 | # ifdef HAVE_RANDOM | |
1995 | # define RAND_BITS 31 | |
1996 | # else /* !HAVE_RANDOM */ | |
1997 | # ifdef HAVE_LRAND48 | |
1998 | # define RAND_BITS 31 | |
1999 | # define random lrand48 | |
2000 | # else /* !HAVE_LRAND48 */ | |
2001 | # define RAND_BITS 15 | |
2002 | # if RAND_MAX == 32767 | |
2003 | # define random rand | |
2004 | # else /* RAND_MAX != 32767 */ | |
2005 | # if RAND_MAX == 2147483647 | |
2006 | # define random() (rand () >> 16) | |
2007 | # else /* RAND_MAX != 2147483647 */ | |
2008 | # ifdef USG | |
2009 | # define random rand | |
2010 | # else | |
2011 | # define random() (rand () >> 16) | |
2a633456 | 2012 | # endif /* !USG */ |
4bb8c8b7 KH |
2013 | # endif /* RAND_MAX != 2147483647 */ |
2014 | # endif /* RAND_MAX != 32767 */ | |
2015 | # endif /* !HAVE_LRAND48 */ | |
2016 | # endif /* !HAVE_RANDOM */ | |
2017 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2018 | |
4bb8c8b7 | 2019 | void |
971de7fb | 2020 | seed_random (long int arg) |
86a5659e | 2021 | { |
4bb8c8b7 KH |
2022 | #ifdef HAVE_RANDOM |
2023 | srandom ((unsigned int)arg); | |
f8b53a82 | 2024 | #else |
4bb8c8b7 | 2025 | # ifdef HAVE_LRAND48 |
76425a49 | 2026 | srand48 (arg); |
4bb8c8b7 KH |
2027 | # else |
2028 | srand ((unsigned int)arg); | |
2029 | # endif | |
2e46c7c6 | 2030 | #endif |
86a5659e JB |
2031 | } |
2032 | ||
4bb8c8b7 KH |
2033 | /* |
2034 | * Build a full Emacs-sized word out of whatever we've got. | |
2035 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
2036 | */ | |
2037 | long | |
971de7fb | 2038 | get_random (void) |
4bb8c8b7 KH |
2039 | { |
2040 | long val = random (); | |
2041 | #if VALBITS > RAND_BITS | |
2042 | val = (val << RAND_BITS) ^ random (); | |
2043 | #if VALBITS > 2*RAND_BITS | |
2044 | val = (val << RAND_BITS) ^ random (); | |
2045 | #if VALBITS > 3*RAND_BITS | |
2046 | val = (val << RAND_BITS) ^ random (); | |
2047 | #if VALBITS > 4*RAND_BITS | |
2048 | val = (val << RAND_BITS) ^ random (); | |
2049 | #endif /* need at least 5 */ | |
2050 | #endif /* need at least 4 */ | |
2051 | #endif /* need at least 3 */ | |
2052 | #endif /* need at least 2 */ | |
2053 | return val & ((1L << VALBITS) - 1); | |
2054 | } | |
7088d1ca RM |
2055 | |
2056 | #ifndef HAVE_STRERROR | |
fe03522b | 2057 | #ifndef WINDOWSNT |
7088d1ca RM |
2058 | char * |
2059 | strerror (errnum) | |
2060 | int errnum; | |
2061 | { | |
2062 | extern char *sys_errlist[]; | |
2063 | extern int sys_nerr; | |
2064 | ||
2065 | if (errnum >= 0 && errnum < sys_nerr) | |
2066 | return sys_errlist[errnum]; | |
2067 | return (char *) "Unknown error"; | |
2068 | } | |
fe03522b | 2069 | #endif /* not WINDOWSNT */ |
7088d1ca | 2070 | #endif /* ! HAVE_STRERROR */ |
86a5659e | 2071 | \f |
86a5659e | 2072 | int |
971de7fb | 2073 | emacs_open (const char *path, int oflag, int mode) |
86a5659e JB |
2074 | { |
2075 | register int rtnval; | |
68c45bf0 | 2076 | |
86a5659e | 2077 | while ((rtnval = open (path, oflag, mode)) == -1 |
275464e7 SM |
2078 | && (errno == EINTR)) |
2079 | QUIT; | |
86a5659e JB |
2080 | return (rtnval); |
2081 | } | |
2082 | ||
dfcf069d | 2083 | int |
971de7fb | 2084 | emacs_close (int fd) |
86a5659e | 2085 | { |
fe111daf | 2086 | int did_retry = 0; |
86a5659e JB |
2087 | register int rtnval; |
2088 | ||
2089 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
2090 | && (errno == EINTR)) |
2091 | did_retry = 1; | |
2092 | ||
2093 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
2094 | file descriptor. If it did the second close will fail with | |
2095 | errno = EBADF. That means we have succeeded. */ | |
2096 | if (rtnval == -1 && did_retry && errno == EBADF) | |
2097 | return 0; | |
2098 | ||
86a5659e JB |
2099 | return rtnval; |
2100 | } | |
2101 | ||
86a5659e | 2102 | int |
971de7fb | 2103 | emacs_read (int fildes, char *buf, unsigned int nbyte) |
86a5659e JB |
2104 | { |
2105 | register int rtnval; | |
177c0ea7 | 2106 | |
86a5659e | 2107 | while ((rtnval = read (fildes, buf, nbyte)) == -1 |
275464e7 SM |
2108 | && (errno == EINTR)) |
2109 | QUIT; | |
86a5659e JB |
2110 | return (rtnval); |
2111 | } | |
2112 | ||
2113 | int | |
971de7fb | 2114 | emacs_write (int fildes, const char *buf, unsigned int nbyte) |
86a5659e | 2115 | { |
b95520f5 | 2116 | register int rtnval, bytes_written; |
86a5659e | 2117 | |
b95520f5 BF |
2118 | bytes_written = 0; |
2119 | ||
2120 | while (nbyte > 0) | |
2121 | { | |
2122 | rtnval = write (fildes, buf, nbyte); | |
2123 | ||
2124 | if (rtnval == -1) | |
2125 | { | |
2126 | if (errno == EINTR) | |
77220eeb SM |
2127 | { |
2128 | #ifdef SYNC_INPUT | |
2129 | /* I originally used `QUIT' but that might causes files to | |
2130 | be truncated if you hit C-g in the middle of it. --Stef */ | |
55310b94 | 2131 | process_pending_signals (); |
77220eeb SM |
2132 | #endif |
2133 | continue; | |
2134 | } | |
b95520f5 | 2135 | else |
aa670904 | 2136 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
2137 | } |
2138 | ||
2139 | buf += rtnval; | |
2140 | nbyte -= rtnval; | |
2141 | bytes_written += rtnval; | |
2142 | } | |
2143 | return (bytes_written); | |
86a5659e | 2144 | } |
86a5659e JB |
2145 | \f |
2146 | #ifdef USG | |
2147 | /* | |
2148 | * All of the following are for USG. | |
2149 | * | |
2150 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2151 | * that the user program has elected to catch. Thus the system call | |
2152 | * must be retried in these cases. To handle this without massive | |
2153 | * changes in the source code, we remap the standard system call names | |
2154 | * to names for our own functions in sysdep.c that do the system call | |
2155 | * with retries. Actually, for portability reasons, it is good | |
2156 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2157 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2158 | * adds an extra level of function call overhead but it is almost |
2159 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2160 | */ | |
2161 | ||
86a5659e JB |
2162 | /* |
2163 | * Warning, this function may not duplicate 4.2 action properly | |
2164 | * under error conditions. | |
2165 | */ | |
2166 | ||
2167 | #ifndef MAXPATHLEN | |
2168 | /* In 4.1, param.h fails to define this. */ | |
2169 | #define MAXPATHLEN 1024 | |
2170 | #endif | |
2171 | ||
2172 | #ifndef HAVE_GETWD | |
2173 | ||
2174 | char * | |
cf84bb53 | 2175 | getwd (char *pathname) |
86a5659e JB |
2176 | { |
2177 | char *npath, *spath; | |
cf84bb53 | 2178 | extern char *getcwd (char *, size_t); |
86a5659e | 2179 | |
9ac0d9e0 | 2180 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 2181 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 2182 | if (spath == 0) |
18b6bc73 GM |
2183 | { |
2184 | UNBLOCK_INPUT; | |
2185 | return spath; | |
2186 | } | |
86a5659e JB |
2187 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
2188 | up to first slash. Should be harmless on other systems. */ | |
2189 | while (*npath && *npath != '/') | |
2190 | npath++; | |
2191 | strcpy (pathname, npath); | |
2192 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2193 | UNBLOCK_INPUT; |
86a5659e JB |
2194 | return pathname; |
2195 | } | |
2196 | ||
2197 | #endif /* HAVE_GETWD */ | |
2198 | ||
2199 | /* | |
2200 | * Emulate rename using unlink/link. Note that this is | |
2201 | * only partially correct. Also, doesn't enforce restriction | |
2202 | * that files be of same type (regular->regular, dir->dir, etc). | |
2203 | */ | |
2204 | ||
4746118a JB |
2205 | #ifndef HAVE_RENAME |
2206 | ||
cf84bb53 JB |
2207 | int |
2208 | rename (const char *from, const char *to) | |
86a5659e JB |
2209 | { |
2210 | if (access (from, 0) == 0) | |
2211 | { | |
2212 | unlink (to); | |
2213 | if (link (from, to) == 0) | |
2214 | if (unlink (from) == 0) | |
2215 | return (0); | |
2216 | } | |
2217 | return (-1); | |
2218 | } | |
2219 | ||
4746118a JB |
2220 | #endif |
2221 | ||
86a5659e | 2222 | |
69ab3201 | 2223 | #if defined(HPUX) && !defined(HAVE_PERROR) |
86a5659e JB |
2224 | |
2225 | /* HPUX curses library references perror, but as far as we know | |
2226 | it won't be called. Anyway this definition will do for now. */ | |
2227 | ||
cf84bb53 JB |
2228 | void |
2229 | perror (void) | |
86a5659e JB |
2230 | { |
2231 | } | |
69ab3201 | 2232 | #endif /* HPUX and not HAVE_PERROR */ |
86a5659e JB |
2233 | |
2234 | #ifndef HAVE_DUP2 | |
2235 | ||
2236 | /* | |
2237 | * Emulate BSD dup2. First close newd if it already exists. | |
2238 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
2239 | * until we are, then close the unsuccessful ones. | |
2240 | */ | |
2241 | ||
cf84bb53 JB |
2242 | int |
2243 | dup2 (int oldd, int newd) | |
86a5659e JB |
2244 | { |
2245 | register int fd, ret; | |
177c0ea7 | 2246 | |
68c45bf0 | 2247 | emacs_close (newd); |
86a5659e JB |
2248 | |
2249 | #ifdef F_DUPFD | |
68c45bf0 | 2250 | return fcntl (oldd, F_DUPFD, newd); |
86a5659e JB |
2251 | #else |
2252 | fd = dup (old); | |
2253 | if (fd == -1) | |
2254 | return -1; | |
2255 | if (fd == new) | |
2256 | return new; | |
2257 | ret = dup2 (old,new); | |
68c45bf0 | 2258 | emacs_close (fd); |
86a5659e JB |
2259 | return ret; |
2260 | #endif | |
2261 | } | |
2262 | ||
2263 | #endif /* not HAVE_DUP2 */ | |
2264 | ||
2265 | /* | |
2266 | * Gettimeofday. Simulate as much as possible. Only accurate | |
2267 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
2268 | * Only needed when subprocesses are defined. | |
2269 | */ | |
2270 | ||
86a5659e JB |
2271 | #ifndef HAVE_GETTIMEOFDAY |
2272 | #ifdef HAVE_TIMEVAL | |
177c0ea7 | 2273 | |
86a5659e | 2274 | /* ARGSUSED */ |
dfcf069d | 2275 | int |
cf84bb53 | 2276 | gettimeofday (struct timeval *tp, struct timezone *tzp) |
86a5659e | 2277 | { |
cf84bb53 | 2278 | extern long time (long); |
86a5659e | 2279 | |
177c0ea7 | 2280 | tp->tv_sec = time ((long *)0); |
86a5659e | 2281 | tp->tv_usec = 0; |
4ca7594f RS |
2282 | if (tzp != 0) |
2283 | tzp->tz_minuteswest = -1; | |
dfcf069d | 2284 | return 0; |
86a5659e | 2285 | } |
177c0ea7 | 2286 | |
86a5659e | 2287 | #endif |
77defa9a | 2288 | #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */ |
177c0ea7 | 2289 | |
86a5659e JB |
2290 | /* |
2291 | * This function will go away as soon as all the stubs fixed. (fnf) | |
2292 | */ | |
2293 | ||
dfcf069d | 2294 | void |
971de7fb | 2295 | croak (char *badfunc) |
86a5659e JB |
2296 | { |
2297 | printf ("%s not yet implemented\r\n", badfunc); | |
28d440ab | 2298 | reset_all_sys_modes (); |
86a5659e JB |
2299 | exit (1); |
2300 | } | |
2301 | ||
2302 | #endif /* USG */ | |
2303 | \f | |
86a5659e JB |
2304 | /* Directory routines for systems that don't have them. */ |
2305 | ||
1c97e857 | 2306 | #ifdef HAVE_DIRENT_H |
86a5659e JB |
2307 | |
2308 | #include <dirent.h> | |
2309 | ||
9d9a7716 | 2310 | #if !defined (HAVE_CLOSEDIR) |
cfdc57af | 2311 | |
86a5659e | 2312 | int |
9d9a7716 | 2313 | closedir (DIR *dirp /* stream from opendir */) |
86a5659e | 2314 | { |
cfdc57af RS |
2315 | int rtnval; |
2316 | ||
68c45bf0 | 2317 | rtnval = emacs_close (dirp->dd_fd); |
9ac0d9e0 | 2318 | xfree ((char *) dirp); |
cfdc57af RS |
2319 | |
2320 | return rtnval; | |
86a5659e | 2321 | } |
9d9a7716 | 2322 | #endif /* not HAVE_CLOSEDIR */ |
1c97e857 | 2323 | #endif /* HAVE_DIRENT_H */ |
86a5659e | 2324 | |
23524fb9 | 2325 | \f |
53ea491a | 2326 | int |
e5447b22 | 2327 | set_file_times (const char *filename, EMACS_TIME atime, EMACS_TIME mtime) |
53ea491a KH |
2328 | { |
2329 | #ifdef HAVE_UTIMES | |
2330 | struct timeval tv[2]; | |
2331 | tv[0] = atime; | |
2332 | tv[1] = mtime; | |
8334eb21 RS |
2333 | return utimes (filename, tv); |
2334 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
2335 | struct utimbuf utb; |
2336 | utb.actime = EMACS_SECS (atime); | |
2337 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
2338 | return utime (filename, &utb); |
2339 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
2340 | } |
2341 | \f | |
23524fb9 JB |
2342 | /* mkdir and rmdir functions, for systems which don't have them. */ |
2343 | ||
2344 | #ifndef HAVE_MKDIR | |
2345 | /* | |
2346 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
2347 | * | |
2348 | * If you want it, it's yours. All I ask in return is that if you | |
2349 | * figure out how to do this in a Bourne Shell script you send me | |
2350 | * a copy. | |
2351 | * sdcsvax!rmr or rmr@uscd | |
2352 | * | |
2353 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
db9cd97a | 2354 | * subroutine. 11Mar86; hoptoad!gnu |
23524fb9 JB |
2355 | * |
2356 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
2357 | * subroutine didn't return EEXIST. It does now. | |
2358 | */ | |
2359 | ||
2360 | /* | |
2361 | * Make a directory. | |
2362 | */ | |
2363 | int | |
cf84bb53 | 2364 | mkdir (char *dpath, int dmode) |
23524fb9 | 2365 | { |
039f26a4 | 2366 | int cpid, status, fd; |
23524fb9 JB |
2367 | struct stat statbuf; |
2368 | ||
2369 | if (stat (dpath, &statbuf) == 0) | |
2370 | { | |
2371 | errno = EEXIST; /* Stat worked, so it already exists */ | |
2372 | return -1; | |
2373 | } | |
2374 | ||
2375 | /* If stat fails for a reason other than non-existence, return error */ | |
2376 | if (errno != ENOENT) | |
2377 | return -1; | |
2378 | ||
039f26a4 | 2379 | synch_process_alive = 1; |
23524fb9 JB |
2380 | switch (cpid = fork ()) |
2381 | { | |
2382 | ||
039f26a4 | 2383 | case -1: /* Error in fork */ |
23524fb9 JB |
2384 | return (-1); /* Errno is set already */ |
2385 | ||
2386 | case 0: /* Child process */ | |
2387 | /* | |
2388 | * Cheap hack to set mode of new directory. Since this | |
2389 | * child process is going away anyway, we zap its umask. | |
2390 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
2391 | * directory. Does anybody care? | |
2392 | */ | |
2393 | status = umask (0); /* Get current umask */ | |
2394 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
68c45bf0 | 2395 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
2396 | if (fd >= 0) |
2397 | { | |
2398 | dup2 (fd, 0); | |
2399 | dup2 (fd, 1); | |
2400 | dup2 (fd, 2); | |
2401 | } | |
23524fb9 JB |
2402 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
2403 | _exit (-1); /* Can't exec /bin/mkdir */ | |
2404 | ||
2405 | default: /* Parent process */ | |
039f26a4 | 2406 | wait_for_termination (cpid); |
23524fb9 JB |
2407 | } |
2408 | ||
6b0824c9 JD |
2409 | if (synch_process_death != 0 || synch_process_retcode != 0 |
2410 | || synch_process_termsig != 0) | |
23524fb9 JB |
2411 | { |
2412 | errno = EIO; /* We don't know why, but */ | |
2413 | return -1; /* /bin/mkdir failed */ | |
2414 | } | |
2415 | ||
2416 | return 0; | |
2417 | } | |
2418 | #endif /* not HAVE_MKDIR */ | |
2419 | ||
2420 | #ifndef HAVE_RMDIR | |
2421 | int | |
cf84bb53 | 2422 | rmdir (char *dpath) |
23524fb9 | 2423 | { |
039f26a4 | 2424 | int cpid, status, fd; |
23524fb9 JB |
2425 | struct stat statbuf; |
2426 | ||
2427 | if (stat (dpath, &statbuf) != 0) | |
2428 | { | |
2429 | /* Stat just set errno. We don't have to */ | |
2430 | return -1; | |
2431 | } | |
2432 | ||
039f26a4 | 2433 | synch_process_alive = 1; |
23524fb9 JB |
2434 | switch (cpid = fork ()) |
2435 | { | |
2436 | ||
039f26a4 | 2437 | case -1: /* Error in fork */ |
23524fb9 JB |
2438 | return (-1); /* Errno is set already */ |
2439 | ||
2440 | case 0: /* Child process */ | |
68c45bf0 | 2441 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
2442 | if (fd >= 0) |
2443 | { | |
2444 | dup2 (fd, 0); | |
2445 | dup2 (fd, 1); | |
2446 | dup2 (fd, 2); | |
2447 | } | |
f560db78 RS |
2448 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
2449 | _exit (-1); /* Can't exec /bin/rmdir */ | |
2450 | ||
207bdbdb | 2451 | default: /* Parent process */ |
f560db78 | 2452 | wait_for_termination (cpid); |
23524fb9 JB |
2453 | } |
2454 | ||
6b0824c9 JD |
2455 | if (synch_process_death != 0 || synch_process_retcode != 0 |
2456 | || synch_process_termsig != 0) | |
23524fb9 JB |
2457 | { |
2458 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 2459 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
2460 | } |
2461 | ||
2462 | return 0; | |
2463 | } | |
2464 | #endif /* !HAVE_RMDIR */ | |
2465 | ||
86a5659e | 2466 | \f |
72af86bd AS |
2467 | #ifndef HAVE_MEMSET |
2468 | void * | |
2469 | memset (void *b, int n, size_t length) | |
2470 | { | |
2471 | unsigned char *p = b; | |
2472 | while (length-- > 0) | |
2473 | *p++ = n; | |
2474 | return b; | |
2475 | } | |
2476 | #endif /* !HAVE_MEMSET */ | |
2477 | ||
2478 | #ifndef HAVE_MEMCPY | |
2479 | void * | |
2480 | memcpy (void *b1, void *b2, size_t length) | |
2481 | { | |
2482 | unsigned char *p1 = b1, *p2 = b2; | |
2483 | while (length-- > 0) | |
2484 | *p1++ = *p2++; | |
2485 | return b1; | |
2486 | } | |
2487 | #endif /* !HAVE_MEMCPY */ | |
2488 | ||
2489 | #ifndef HAVE_MEMMOVE | |
2490 | void * | |
2491 | memmove (void *b1, void *b2, size_t length) | |
2492 | { | |
2493 | unsigned char *p1 = b1, *p2 = b2; | |
2494 | if (p1 < p2 || p1 >= p2 + length) | |
2495 | while (length-- > 0) | |
2496 | *p1++ = *p2++; | |
2497 | else | |
2498 | { | |
2499 | p1 += length; | |
2500 | p2 += length; | |
2501 | while (length-- > 0) | |
2502 | *--p1 = *--p2; | |
2503 | } | |
2504 | return b1; | |
2505 | } | |
2506 | #endif /* !HAVE_MEMCPY */ | |
2507 | ||
2508 | #ifndef HAVE_MEMCMP | |
2509 | int | |
2510 | memcmp (void *b1, void *b2, size_t length) | |
2511 | { | |
2512 | unsigned char *p1 = b1, *p2 = b2; | |
2513 | while (length-- > 0) | |
2514 | if (*p1++ != *p2++) | |
2515 | return p1[-1] < p2[-1] ? -1 : 1; | |
2516 | return 0; | |
2517 | } | |
2518 | #endif /* !HAVE_MEMCMP */ | |
2519 | \f | |
68c45bf0 PE |
2520 | #ifndef HAVE_STRSIGNAL |
2521 | char * | |
cf84bb53 | 2522 | strsignal (int code) |
68c45bf0 PE |
2523 | { |
2524 | char *signame = 0; | |
2525 | ||
2526 | if (0 <= code && code < NSIG) | |
2527 | { | |
68c45bf0 PE |
2528 | /* Cast to suppress warning if the table has const char *. */ |
2529 | signame = (char *) sys_siglist[code]; | |
68c45bf0 | 2530 | } |
c4ea52a6 | 2531 | |
68c45bf0 PE |
2532 | return signame; |
2533 | } | |
2534 | #endif /* HAVE_STRSIGNAL */ | |
d888760c | 2535 | \f |
a7ebc409 | 2536 | #ifndef DOS_NT |
d888760c | 2537 | /* For make-serial-process */ |
cf84bb53 JB |
2538 | int |
2539 | serial_open (char *port) | |
d888760c GM |
2540 | { |
2541 | int fd = -1; | |
2542 | ||
2543 | fd = emacs_open ((char*) port, | |
2544 | O_RDWR | |
2545 | #ifdef O_NONBLOCK | |
2546 | | O_NONBLOCK | |
2547 | #else | |
2548 | | O_NDELAY | |
2549 | #endif | |
2550 | #ifdef O_NOCTTY | |
2551 | | O_NOCTTY | |
2552 | #endif | |
2553 | , 0); | |
2554 | if (fd < 0) | |
2555 | { | |
2556 | error ("Could not open %s: %s", | |
2557 | port, emacs_strerror (errno)); | |
2558 | } | |
2559 | #ifdef TIOCEXCL | |
2560 | ioctl (fd, TIOCEXCL, (char *) 0); | |
2561 | #endif | |
2562 | ||
2563 | return fd; | |
2564 | } | |
759d3f32 SM |
2565 | |
2566 | #if !defined (HAVE_CFMAKERAW) | |
2567 | /* Workaround for targets which are missing cfmakeraw. */ | |
2568 | /* Pasted from man page. */ | |
cf84bb53 JB |
2569 | static void |
2570 | cfmakeraw (struct termios *termios_p) | |
759d3f32 SM |
2571 | { |
2572 | termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
2573 | termios_p->c_oflag &= ~OPOST; | |
2574 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
2575 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
2576 | termios_p->c_cflag |= CS8; | |
2577 | } | |
2578 | #endif /* !defined (HAVE_CFMAKERAW */ | |
2579 | ||
2580 | #if !defined (HAVE_CFSETSPEED) | |
2581 | /* Workaround for targets which are missing cfsetspeed. */ | |
cf84bb53 JB |
2582 | static int |
2583 | cfsetspeed (struct termios *termios_p, speed_t vitesse) | |
759d3f32 SM |
2584 | { |
2585 | return (cfsetispeed (termios_p, vitesse) | |
2586 | + cfsetospeed (termios_p, vitesse)); | |
2587 | } | |
2588 | #endif | |
2589 | ||
d888760c GM |
2590 | /* For serial-process-configure */ |
2591 | void | |
2592 | serial_configure (struct Lisp_Process *p, | |
cf84bb53 | 2593 | Lisp_Object contact) |
d888760c GM |
2594 | { |
2595 | Lisp_Object childp2 = Qnil; | |
2596 | Lisp_Object tem = Qnil; | |
2597 | struct termios attr; | |
2598 | int err = -1; | |
2599 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
2600 | ||
2601 | childp2 = Fcopy_sequence (p->childp); | |
2602 | ||
2603 | /* Read port attributes and prepare default configuration. */ | |
2604 | err = tcgetattr (p->outfd, &attr); | |
2605 | if (err != 0) | |
2606 | error ("tcgetattr() failed: %s", emacs_strerror (errno)); | |
2607 | cfmakeraw (&attr); | |
2608 | #if defined (CLOCAL) | |
2609 | attr.c_cflag |= CLOCAL; | |
2610 | #endif | |
2611 | #if defined (CREAD) | |
6d1921be | 2612 | attr.c_cflag |= CREAD; |
d888760c GM |
2613 | #endif |
2614 | ||
2615 | /* Configure speed. */ | |
2616 | if (!NILP (Fplist_member (contact, QCspeed))) | |
2617 | tem = Fplist_get (contact, QCspeed); | |
2618 | else | |
2619 | tem = Fplist_get (p->childp, QCspeed); | |
2620 | CHECK_NUMBER (tem); | |
2621 | err = cfsetspeed (&attr, XINT (tem)); | |
2622 | if (err != 0) | |
2623 | error ("cfsetspeed(%d) failed: %s", XINT (tem), emacs_strerror (errno)); | |
2624 | childp2 = Fplist_put (childp2, QCspeed, tem); | |
2625 | ||
2626 | /* Configure bytesize. */ | |
2627 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
2628 | tem = Fplist_get (contact, QCbytesize); | |
2629 | else | |
2630 | tem = Fplist_get (p->childp, QCbytesize); | |
2631 | if (NILP (tem)) | |
2632 | tem = make_number (8); | |
2633 | CHECK_NUMBER (tem); | |
2634 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
2635 | error (":bytesize must be nil (8), 7, or 8"); | |
cf84bb53 | 2636 | summary[0] = XINT (tem) + '0'; |
d888760c GM |
2637 | #if defined (CSIZE) && defined (CS7) && defined (CS8) |
2638 | attr.c_cflag &= ~CSIZE; | |
2639 | attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8); | |
2640 | #else | |
16bad4dd | 2641 | /* Don't error on bytesize 8, which should be set by cfmakeraw. */ |
d888760c GM |
2642 | if (XINT (tem) != 8) |
2643 | error ("Bytesize cannot be changed"); | |
2644 | #endif | |
2645 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
2646 | ||
2647 | /* Configure parity. */ | |
2648 | if (!NILP (Fplist_member (contact, QCparity))) | |
2649 | tem = Fplist_get (contact, QCparity); | |
2650 | else | |
2651 | tem = Fplist_get (p->childp, QCparity); | |
2652 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) | |
2653 | error (":parity must be nil (no parity), `even', or `odd'"); | |
2654 | #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK) | |
2655 | attr.c_cflag &= ~(PARENB | PARODD); | |
2656 | attr.c_iflag &= ~(IGNPAR | INPCK); | |
2657 | if (NILP (tem)) | |
2658 | { | |
2659 | summary[1] = 'N'; | |
2660 | } | |
2661 | else if (EQ (tem, Qeven)) | |
2662 | { | |
2663 | summary[1] = 'E'; | |
2664 | attr.c_cflag |= PARENB; | |
2665 | attr.c_iflag |= (IGNPAR | INPCK); | |
2666 | } | |
2667 | else if (EQ (tem, Qodd)) | |
2668 | { | |
2669 | summary[1] = 'O'; | |
2670 | attr.c_cflag |= (PARENB | PARODD); | |
2671 | attr.c_iflag |= (IGNPAR | INPCK); | |
2672 | } | |
2673 | #else | |
16bad4dd | 2674 | /* Don't error on no parity, which should be set by cfmakeraw. */ |
d888760c GM |
2675 | if (!NILP (tem)) |
2676 | error ("Parity cannot be configured"); | |
2677 | #endif | |
2678 | childp2 = Fplist_put (childp2, QCparity, tem); | |
2679 | ||
2680 | /* Configure stopbits. */ | |
2681 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
2682 | tem = Fplist_get (contact, QCstopbits); | |
2683 | else | |
2684 | tem = Fplist_get (p->childp, QCstopbits); | |
2685 | if (NILP (tem)) | |
2686 | tem = make_number (1); | |
2687 | CHECK_NUMBER (tem); | |
2688 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
2689 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
2690 | summary[2] = XINT (tem) + '0'; | |
2691 | #if defined (CSTOPB) | |
2692 | attr.c_cflag &= ~CSTOPB; | |
2693 | if (XINT (tem) == 2) | |
2694 | attr.c_cflag |= CSTOPB; | |
2695 | #else | |
16bad4dd | 2696 | /* Don't error on 1 stopbit, which should be set by cfmakeraw. */ |
d888760c GM |
2697 | if (XINT (tem) != 1) |
2698 | error ("Stopbits cannot be configured"); | |
2699 | #endif | |
2700 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
2701 | ||
2702 | /* Configure flowcontrol. */ | |
2703 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
2704 | tem = Fplist_get (contact, QCflowcontrol); | |
2705 | else | |
2706 | tem = Fplist_get (p->childp, QCflowcontrol); | |
2707 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) | |
2708 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
2709 | #if defined (CRTSCTS) | |
2710 | attr.c_cflag &= ~CRTSCTS; | |
2711 | #endif | |
2712 | #if defined (CNEW_RTSCTS) | |
2713 | attr.c_cflag &= ~CNEW_RTSCTS; | |
2714 | #endif | |
2715 | #if defined (IXON) && defined (IXOFF) | |
2716 | attr.c_iflag &= ~(IXON | IXOFF); | |
2717 | #endif | |
2718 | if (NILP (tem)) | |
2719 | { | |
2720 | /* Already configured. */ | |
2721 | } | |
2722 | else if (EQ (tem, Qhw)) | |
2723 | { | |
2724 | #if defined (CRTSCTS) | |
2725 | attr.c_cflag |= CRTSCTS; | |
2726 | #elif defined (CNEW_RTSCTS) | |
2727 | attr.c_cflag |= CNEW_RTSCTS; | |
2728 | #else | |
2729 | error ("Hardware flowcontrol (RTS/CTS) not supported"); | |
2730 | #endif | |
2731 | } | |
2732 | else if (EQ (tem, Qsw)) | |
2733 | { | |
2734 | #if defined (IXON) && defined (IXOFF) | |
2735 | attr.c_iflag |= (IXON | IXOFF); | |
2736 | #else | |
2737 | error ("Software flowcontrol (XON/XOFF) not supported"); | |
2738 | #endif | |
2739 | } | |
2740 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
2741 | ||
2742 | /* Activate configuration. */ | |
2743 | err = tcsetattr (p->outfd, TCSANOW, &attr); | |
2744 | if (err != 0) | |
2745 | error ("tcsetattr() failed: %s", emacs_strerror (errno)); | |
2746 | ||
2747 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
2748 | p->childp = childp2; | |
2749 | ||
2750 | } | |
a7ebc409 | 2751 | #endif /* not DOS_NT */ |
06e111a6 DN |
2752 | \f |
2753 | /* System depended enumeration of and access to system processes a-la ps(1). */ | |
2754 | ||
2755 | #ifdef HAVE_PROCFS | |
2756 | ||
2757 | /* Process enumeration and access via /proc. */ | |
2758 | ||
2759 | Lisp_Object | |
971de7fb | 2760 | list_system_processes (void) |
06e111a6 DN |
2761 | { |
2762 | Lisp_Object procdir, match, proclist, next; | |
2763 | struct gcpro gcpro1, gcpro2; | |
2764 | register Lisp_Object tail; | |
2765 | ||
2766 | GCPRO2 (procdir, match); | |
2767 | /* For every process on the system, there's a directory in the | |
2768 | "/proc" pseudo-directory whose name is the numeric ID of that | |
2769 | process. */ | |
2770 | procdir = build_string ("/proc"); | |
2771 | match = build_string ("[0-9]+"); | |
2772 | proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil); | |
2773 | ||
2774 | /* `proclist' gives process IDs as strings. Destructively convert | |
2775 | each string into a number. */ | |
2776 | for (tail = proclist; CONSP (tail); tail = next) | |
2777 | { | |
2778 | next = XCDR (tail); | |
2779 | XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil)); | |
2780 | } | |
2781 | UNGCPRO; | |
2782 | ||
2783 | /* directory_files_internal returns the files in reverse order; undo | |
2784 | that. */ | |
2785 | proclist = Fnreverse (proclist); | |
2786 | return proclist; | |
2787 | } | |
2788 | ||
f8d23104 DN |
2789 | /* The WINDOWSNT implementation is in w32.c. |
2790 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 2791 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
2792 | |
2793 | Lisp_Object | |
cf84bb53 | 2794 | list_system_processes (void) |
06e111a6 DN |
2795 | { |
2796 | return Qnil; | |
2797 | } | |
91c85b70 EZ |
2798 | |
2799 | #endif /* !defined (WINDOWSNT) */ | |
06e111a6 DN |
2800 | |
2801 | #ifdef GNU_LINUX | |
2802 | static void | |
2803 | time_from_jiffies (unsigned long long tval, long hz, | |
2804 | time_t *sec, unsigned *usec) | |
2805 | { | |
2806 | unsigned long long ullsec; | |
2807 | ||
2808 | *sec = tval / hz; | |
2809 | ullsec = *sec; | |
2810 | tval -= ullsec * hz; | |
2811 | /* Careful: if HZ > 1 million, then integer division by it yields zero. */ | |
2812 | if (hz <= 1000000) | |
2813 | *usec = tval * 1000000 / hz; | |
2814 | else | |
2815 | *usec = tval / (hz / 1000000); | |
2816 | } | |
2817 | ||
2818 | static Lisp_Object | |
2819 | ltime_from_jiffies (unsigned long long tval, long hz) | |
2820 | { | |
2821 | time_t sec; | |
2822 | unsigned usec; | |
2823 | ||
2824 | time_from_jiffies (tval, hz, &sec, &usec); | |
2825 | ||
2826 | return list3 (make_number ((sec >> 16) & 0xffff), | |
2827 | make_number (sec & 0xffff), | |
2828 | make_number (usec)); | |
2829 | } | |
2830 | ||
2831 | static void | |
2832 | get_up_time (time_t *sec, unsigned *usec) | |
2833 | { | |
2834 | FILE *fup; | |
2835 | ||
2836 | *sec = *usec = 0; | |
2837 | ||
2838 | BLOCK_INPUT; | |
2839 | fup = fopen ("/proc/uptime", "r"); | |
2840 | ||
2841 | if (fup) | |
2842 | { | |
2843 | double uptime, idletime; | |
2844 | ||
2845 | /* The numbers in /proc/uptime use C-locale decimal point, but | |
2846 | we already set ourselves to the C locale (see `fixup_locale' | |
2847 | in emacs.c). */ | |
2848 | if (2 <= fscanf (fup, "%lf %lf", &uptime, &idletime)) | |
2849 | { | |
2850 | *sec = uptime; | |
2851 | *usec = (uptime - *sec) * 1000000; | |
2852 | } | |
2853 | fclose (fup); | |
2854 | } | |
2855 | UNBLOCK_INPUT; | |
2856 | } | |
2857 | ||
2858 | #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff) | |
2859 | #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12)) | |
2860 | ||
2861 | static Lisp_Object | |
f4f634e8 | 2862 | procfs_ttyname (int rdev) |
06e111a6 DN |
2863 | { |
2864 | FILE *fdev = NULL; | |
2865 | char name[PATH_MAX]; | |
2866 | ||
2867 | BLOCK_INPUT; | |
2868 | fdev = fopen ("/proc/tty/drivers", "r"); | |
2869 | ||
2870 | if (fdev) | |
2871 | { | |
2872 | unsigned major; | |
2873 | unsigned long minor_beg, minor_end; | |
2874 | char minor[25]; /* 2 32-bit numbers + dash */ | |
2875 | char *endp; | |
2876 | ||
2877 | while (!feof (fdev) && !ferror (fdev)) | |
2878 | { | |
2879 | if (3 <= fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor) | |
2880 | && major == MAJOR (rdev)) | |
2881 | { | |
2882 | minor_beg = strtoul (minor, &endp, 0); | |
2883 | if (*endp == '\0') | |
2884 | minor_end = minor_beg; | |
2885 | else if (*endp == '-') | |
2886 | minor_end = strtoul (endp + 1, &endp, 0); | |
2887 | else | |
2888 | continue; | |
2889 | ||
2890 | if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end) | |
2891 | { | |
10d66ec0 | 2892 | sprintf (name + strlen (name), "%u", MINOR (rdev)); |
06e111a6 DN |
2893 | break; |
2894 | } | |
2895 | } | |
2896 | } | |
2897 | fclose (fdev); | |
2898 | } | |
2899 | UNBLOCK_INPUT; | |
2900 | return build_string (name); | |
2901 | } | |
2902 | ||
2903 | static unsigned long | |
2904 | procfs_get_total_memory (void) | |
2905 | { | |
2906 | FILE *fmem = NULL; | |
2907 | unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */ | |
2908 | ||
2909 | BLOCK_INPUT; | |
2910 | fmem = fopen ("/proc/meminfo", "r"); | |
2911 | ||
2912 | if (fmem) | |
2913 | { | |
2914 | unsigned long entry_value; | |
2915 | char entry_name[20]; /* the longest I saw is 13+1 */ | |
2916 | ||
2917 | while (!feof (fmem) && !ferror (fmem)) | |
2918 | { | |
2919 | if (2 <= fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value) | |
2920 | && strcmp (entry_name, "MemTotal:") == 0) | |
2921 | { | |
2922 | retval = entry_value; | |
2923 | break; | |
2924 | } | |
2925 | } | |
2926 | fclose (fmem); | |
2927 | } | |
2928 | UNBLOCK_INPUT; | |
2929 | return retval; | |
2930 | } | |
2931 | ||
2932 | Lisp_Object | |
f4f634e8 | 2933 | system_process_attributes (Lisp_Object pid) |
06e111a6 DN |
2934 | { |
2935 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
2936 | struct stat st; | |
2937 | struct passwd *pw; | |
2938 | struct group *gr; | |
2939 | long clocks_per_sec; | |
2940 | char *procfn_end; | |
2941 | char procbuf[1025], *p, *q; | |
2942 | int fd; | |
2943 | ssize_t nread; | |
2944 | const char *cmd = NULL; | |
2945 | char *cmdline = NULL; | |
2946 | size_t cmdsize = 0, cmdline_size; | |
2947 | unsigned char c; | |
2948 | int proc_id, ppid, uid, gid, pgrp, sess, tty, tpgid, thcount; | |
2949 | unsigned long long utime, stime, cutime, cstime, start; | |
2950 | long priority, nice, rss; | |
2951 | unsigned long minflt, majflt, cminflt, cmajflt, vsize; | |
2952 | time_t sec; | |
2953 | unsigned usec; | |
2b0a91e7 | 2954 | EMACS_TIME tnow, tstart, tboot, telapsed; |
06e111a6 DN |
2955 | double pcpu, pmem; |
2956 | Lisp_Object attrs = Qnil; | |
2957 | Lisp_Object cmd_str, decoded_cmd, tem; | |
2958 | struct gcpro gcpro1, gcpro2; | |
2959 | EMACS_INT uid_eint, gid_eint; | |
2960 | ||
2961 | CHECK_NUMBER_OR_FLOAT (pid); | |
2962 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); | |
10d66ec0 | 2963 | sprintf (procfn, "/proc/%u", proc_id); |
06e111a6 DN |
2964 | if (stat (procfn, &st) < 0) |
2965 | return attrs; | |
2966 | ||
2967 | GCPRO2 (attrs, decoded_cmd); | |
2968 | ||
2969 | /* euid egid */ | |
2970 | uid = st.st_uid; | |
2971 | /* Use of EMACS_INT stops GCC whining about limited range of data type. */ | |
2972 | uid_eint = uid; | |
2973 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid_eint)), attrs); | |
2974 | BLOCK_INPUT; | |
2975 | pw = getpwuid (uid); | |
2976 | UNBLOCK_INPUT; | |
2977 | if (pw) | |
2978 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
2979 | ||
2980 | gid = st.st_gid; | |
2981 | gid_eint = gid; | |
2982 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid_eint)), attrs); | |
2983 | BLOCK_INPUT; | |
2984 | gr = getgrgid (gid); | |
2985 | UNBLOCK_INPUT; | |
2986 | if (gr) | |
2987 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
2988 | ||
2989 | strcpy (fn, procfn); | |
2990 | procfn_end = fn + strlen (fn); | |
2991 | strcpy (procfn_end, "/stat"); | |
2992 | fd = emacs_open (fn, O_RDONLY, 0); | |
cf84bb53 | 2993 | if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof (procbuf) - 1)) > 0) |
06e111a6 DN |
2994 | { |
2995 | procbuf[nread] = '\0'; | |
2996 | p = procbuf; | |
2997 | ||
2998 | p = strchr (p, '('); | |
2999 | if (p != NULL) | |
3000 | { | |
3001 | q = strrchr (p + 1, ')'); | |
3002 | /* comm */ | |
3003 | if (q != NULL) | |
3004 | { | |
3005 | cmd = p + 1; | |
3006 | cmdsize = q - cmd; | |
3007 | } | |
3008 | } | |
3009 | else | |
3010 | q = NULL; | |
3011 | if (cmd == NULL) | |
3012 | { | |
3013 | cmd = "???"; | |
3014 | cmdsize = 3; | |
3015 | } | |
3016 | /* Command name is encoded in locale-coding-system; decode it. */ | |
3017 | cmd_str = make_unibyte_string (cmd, cmdsize); | |
3018 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
3019 | Vlocale_coding_system, 0); | |
3020 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
3021 | ||
3022 | if (q) | |
3023 | { | |
3024 | EMACS_INT ppid_eint, pgrp_eint, sess_eint, tpgid_eint, thcount_eint; | |
3025 | p = q + 2; | |
3026 | /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */ | |
3027 | sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld", | |
3028 | &c, &ppid, &pgrp, &sess, &tty, &tpgid, | |
3029 | &minflt, &cminflt, &majflt, &cmajflt, | |
3030 | &utime, &stime, &cutime, &cstime, | |
3031 | &priority, &nice, &thcount, &start, &vsize, &rss); | |
3032 | { | |
3033 | char state_str[2]; | |
3034 | ||
3035 | state_str[0] = c; | |
3036 | state_str[1] = '\0'; | |
3037 | tem = build_string (state_str); | |
3038 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
3039 | } | |
3040 | /* Stops GCC whining about limited range of data type. */ | |
3041 | ppid_eint = ppid; | |
3042 | pgrp_eint = pgrp; | |
3043 | sess_eint = sess; | |
3044 | tpgid_eint = tpgid; | |
3045 | thcount_eint = thcount; | |
3046 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid_eint)), attrs); | |
3047 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp_eint)), attrs); | |
3048 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess_eint)), attrs); | |
3049 | attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs); | |
3050 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid_eint)), attrs); | |
3051 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs); | |
3052 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs); | |
3053 | attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), attrs); | |
3054 | attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), attrs); | |
3055 | clocks_per_sec = sysconf (_SC_CLK_TCK); | |
3056 | if (clocks_per_sec < 0) | |
3057 | clocks_per_sec = 100; | |
3058 | attrs = Fcons (Fcons (Qutime, | |
3059 | ltime_from_jiffies (utime, clocks_per_sec)), | |
3060 | attrs); | |
3061 | attrs = Fcons (Fcons (Qstime, | |
3062 | ltime_from_jiffies (stime, clocks_per_sec)), | |
3063 | attrs); | |
ac1e4171 EZ |
3064 | attrs = Fcons (Fcons (Qtime, |
3065 | ltime_from_jiffies (stime+utime, clocks_per_sec)), | |
3066 | attrs); | |
06e111a6 DN |
3067 | attrs = Fcons (Fcons (Qcutime, |
3068 | ltime_from_jiffies (cutime, clocks_per_sec)), | |
3069 | attrs); | |
3070 | attrs = Fcons (Fcons (Qcstime, | |
3071 | ltime_from_jiffies (cstime, clocks_per_sec)), | |
ac1e4171 EZ |
3072 | attrs); |
3073 | attrs = Fcons (Fcons (Qctime, | |
3074 | ltime_from_jiffies (cstime+cutime, clocks_per_sec)), | |
06e111a6 DN |
3075 | attrs); |
3076 | attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs); | |
3077 | attrs = Fcons (Fcons (Qnice, make_number (nice)), attrs); | |
3078 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs); | |
3079 | EMACS_GET_TIME (tnow); | |
3080 | get_up_time (&sec, &usec); | |
3081 | EMACS_SET_SECS (telapsed, sec); | |
3082 | EMACS_SET_USECS (telapsed, usec); | |
3083 | EMACS_SUB_TIME (tboot, tnow, telapsed); | |
3084 | time_from_jiffies (start, clocks_per_sec, &sec, &usec); | |
3085 | EMACS_SET_SECS (tstart, sec); | |
3086 | EMACS_SET_USECS (tstart, usec); | |
3087 | EMACS_ADD_TIME (tstart, tboot, tstart); | |
3088 | attrs = Fcons (Fcons (Qstart, | |
3089 | list3 (make_number | |
3090 | ((EMACS_SECS (tstart) >> 16) & 0xffff), | |
3091 | make_number | |
3092 | (EMACS_SECS (tstart) & 0xffff), | |
3093 | make_number | |
3094 | (EMACS_USECS (tstart)))), | |
3095 | attrs); | |
3096 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize/1024)), attrs); | |
3097 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4*rss)), attrs); | |
3098 | EMACS_SUB_TIME (telapsed, tnow, tstart); | |
3099 | attrs = Fcons (Fcons (Qetime, | |
3100 | list3 (make_number | |
3101 | ((EMACS_SECS (telapsed) >> 16) & 0xffff), | |
3102 | make_number | |
3103 | (EMACS_SECS (telapsed) & 0xffff), | |
3104 | make_number | |
3105 | (EMACS_USECS (telapsed)))), | |
3106 | attrs); | |
3107 | time_from_jiffies (utime + stime, clocks_per_sec, &sec, &usec); | |
3108 | pcpu = (sec + usec / 1000000.0) / (EMACS_SECS (telapsed) + EMACS_USECS (telapsed) / 1000000.0); | |
3109 | if (pcpu > 1.0) | |
3110 | pcpu = 1.0; | |
3111 | attrs = Fcons (Fcons (Qpcpu, make_float (100 * pcpu)), attrs); | |
3112 | pmem = 4.0 * 100 * rss / procfs_get_total_memory (); | |
3113 | if (pmem > 100) | |
3114 | pmem = 100; | |
3115 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); | |
3116 | } | |
3117 | } | |
3118 | if (fd >= 0) | |
3119 | emacs_close (fd); | |
3120 | ||
3121 | /* args */ | |
3122 | strcpy (procfn_end, "/cmdline"); | |
3123 | fd = emacs_open (fn, O_RDONLY, 0); | |
3124 | if (fd >= 0) | |
3125 | { | |
3126 | for (cmdline_size = 0; emacs_read (fd, &c, 1) == 1; cmdline_size++) | |
3127 | { | |
3128 | if (isspace (c) || c == '\\') | |
3129 | cmdline_size++; /* for later quoting, see below */ | |
3130 | } | |
3131 | if (cmdline_size) | |
3132 | { | |
3133 | cmdline = xmalloc (cmdline_size + 1); | |
3134 | lseek (fd, 0L, SEEK_SET); | |
3135 | cmdline[0] = '\0'; | |
3136 | if ((nread = read (fd, cmdline, cmdline_size)) >= 0) | |
3137 | cmdline[nread++] = '\0'; | |
3138 | else | |
3139 | { | |
3140 | /* Assigning zero to `nread' makes us skip the following | |
3141 | two loops, assign zero to cmdline_size, and enter the | |
3142 | following `if' clause that handles unknown command | |
3143 | lines. */ | |
3144 | nread = 0; | |
3145 | } | |
3146 | /* We don't want trailing null characters. */ | |
3147 | for (p = cmdline + nread - 1; p > cmdline && !*p; p--) | |
3148 | nread--; | |
3149 | for (p = cmdline; p < cmdline + nread; p++) | |
3150 | { | |
3151 | /* Escape-quote whitespace and backslashes. */ | |
3152 | if (isspace (*p) || *p == '\\') | |
3153 | { | |
3154 | memmove (p + 1, p, nread - (p - cmdline)); | |
3155 | nread++; | |
3156 | *p++ = '\\'; | |
3157 | } | |
3158 | else if (*p == '\0') | |
3159 | *p = ' '; | |
3160 | } | |
3161 | cmdline_size = nread; | |
3162 | } | |
3163 | if (!cmdline_size) | |
3164 | { | |
3165 | if (!cmd) | |
3166 | cmd = "???"; | |
3167 | if (!cmdsize) | |
3168 | cmdsize = strlen (cmd); | |
3169 | cmdline_size = cmdsize + 2; | |
3170 | cmdline = xmalloc (cmdline_size + 1); | |
3171 | strcpy (cmdline, "["); | |
3172 | strcat (strncat (cmdline, cmd, cmdsize), "]"); | |
3173 | } | |
3174 | emacs_close (fd); | |
3175 | /* Command line is encoded in locale-coding-system; decode it. */ | |
3176 | cmd_str = make_unibyte_string (cmdline, cmdline_size); | |
3177 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
3178 | Vlocale_coding_system, 0); | |
3179 | xfree (cmdline); | |
3180 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
3181 | } | |
3182 | ||
3183 | UNGCPRO; | |
3184 | return attrs; | |
3185 | } | |
91c85b70 | 3186 | |
f4f634e8 DN |
3187 | #elif defined (SOLARIS2) && defined (HAVE_PROCFS) |
3188 | ||
3189 | /* The <procfs.h> header does not like to be included if _LP64 is defined and | |
3190 | __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */ | |
3191 | #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) | |
3192 | #define PROCFS_FILE_OFFSET_BITS_HACK 1 | |
3193 | #undef _FILE_OFFSET_BITS | |
3194 | #else | |
3195 | #define PROCFS_FILE_OFFSET_BITS_HACK 0 | |
3196 | #endif | |
3197 | ||
3198 | #include <procfs.h> | |
3199 | ||
3200 | #if PROCFS_FILE_OFFSET_BITS_HACK == 1 | |
3201 | #define _FILE_OFFSET_BITS 64 | |
3202 | #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */ | |
3203 | ||
3204 | Lisp_Object | |
3205 | system_process_attributes (Lisp_Object pid) | |
3206 | { | |
3207 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
3208 | struct stat st; | |
3209 | struct passwd *pw; | |
3210 | struct group *gr; | |
3211 | char *procfn_end; | |
3212 | struct psinfo pinfo; | |
3213 | int fd; | |
3214 | ssize_t nread; | |
3215 | int proc_id, uid, gid; | |
3216 | Lisp_Object attrs = Qnil; | |
3217 | Lisp_Object decoded_cmd, tem; | |
3218 | struct gcpro gcpro1, gcpro2; | |
3219 | EMACS_INT uid_eint, gid_eint; | |
3220 | ||
3221 | CHECK_NUMBER_OR_FLOAT (pid); | |
3222 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); | |
3223 | sprintf (procfn, "/proc/%u", proc_id); | |
3224 | if (stat (procfn, &st) < 0) | |
3225 | return attrs; | |
3226 | ||
3227 | GCPRO2 (attrs, decoded_cmd); | |
3228 | ||
3229 | /* euid egid */ | |
3230 | uid = st.st_uid; | |
3231 | /* Use of EMACS_INT stops GCC whining about limited range of data type. */ | |
3232 | uid_eint = uid; | |
3233 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid_eint)), attrs); | |
3234 | BLOCK_INPUT; | |
3235 | pw = getpwuid (uid); | |
3236 | UNBLOCK_INPUT; | |
3237 | if (pw) | |
3238 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
3239 | ||
3240 | gid = st.st_gid; | |
3241 | gid_eint = gid; | |
3242 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid_eint)), attrs); | |
3243 | BLOCK_INPUT; | |
3244 | gr = getgrgid (gid); | |
3245 | UNBLOCK_INPUT; | |
3246 | if (gr) | |
3247 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
3248 | ||
3249 | strcpy (fn, procfn); | |
3250 | procfn_end = fn + strlen (fn); | |
3251 | strcpy (procfn_end, "/psinfo"); | |
3252 | fd = emacs_open (fn, O_RDONLY, 0); | |
3253 | if (fd >= 0 | |
cf84bb53 | 3254 | && (nread = read (fd, (char*)&pinfo, sizeof (struct psinfo)) > 0)) |
f4f634e8 DN |
3255 | { |
3256 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs); | |
3257 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs); | |
3258 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (pinfo.pr_sid)), attrs); | |
3259 | ||
3260 | { | |
3261 | char state_str[2]; | |
3262 | state_str[0] = pinfo.pr_lwp.pr_sname; | |
3263 | state_str[1] = '\0'; | |
3264 | tem = build_string (state_str); | |
3265 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
3266 | } | |
3267 | ||
3268 | /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t, | |
3269 | need to get a string from it. */ | |
3270 | ||
3271 | /* FIXME: missing: Qtpgid */ | |
3272 | ||
3273 | /* FIXME: missing: | |
3274 | Qminflt | |
3275 | Qmajflt | |
3276 | Qcminflt | |
3277 | Qcmajflt | |
3278 | ||
bfe11752 DN |
3279 | Qutime |
3280 | Qcutime | |
f4f634e8 DN |
3281 | Qstime |
3282 | Qcstime | |
3283 | Are they available? */ | |
3284 | ||
bfe11752 | 3285 | attrs = Fcons (Fcons (Qtime, |
f4f634e8 DN |
3286 | list3 (make_number (pinfo.pr_time.tv_sec >> 16), |
3287 | make_number (pinfo.pr_time.tv_sec & 0xffff), | |
3288 | make_number (pinfo.pr_time.tv_nsec))), | |
3289 | attrs); | |
3290 | ||
bfe11752 | 3291 | attrs = Fcons (Fcons (Qctime, |
f4f634e8 DN |
3292 | list3 (make_number (pinfo.pr_ctime.tv_sec >> 16), |
3293 | make_number (pinfo.pr_ctime.tv_sec & 0xffff), | |
3294 | make_number (pinfo.pr_ctime.tv_nsec))), | |
3295 | attrs); | |
3296 | ||
3297 | attrs = Fcons (Fcons (Qpri, make_number (pinfo.pr_lwp.pr_pri)), attrs); | |
3298 | attrs = Fcons (Fcons (Qnice, make_number (pinfo.pr_lwp.pr_nice)), attrs); | |
3299 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pinfo.pr_nlwp)), attrs); | |
3300 | ||
3301 | attrs = Fcons (Fcons (Qstart, | |
3302 | list3 (make_number (pinfo.pr_start.tv_sec >> 16), | |
3303 | make_number (pinfo.pr_start.tv_sec & 0xffff), | |
3304 | make_number (pinfo.pr_start.tv_nsec))), | |
3305 | attrs); | |
3306 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (pinfo.pr_size)), attrs); | |
3307 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (pinfo.pr_rssize)), attrs); | |
3308 | ||
3309 | /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */ | |
3310 | attrs = Fcons (Fcons (Qpcpu, (pinfo.pr_pctcpu * 100.0) / (double)0x8000), attrs); | |
3311 | attrs = Fcons (Fcons (Qpmem, (pinfo.pr_pctmem * 100.0) / (double)0x8000), attrs); | |
3312 | ||
3313 | decoded_cmd | |
3314 | = code_convert_string_norecord (make_unibyte_string (pinfo.pr_fname, | |
3315 | strlen (pinfo.pr_fname)), | |
3316 | Vlocale_coding_system, 0); | |
3317 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
3318 | decoded_cmd | |
3319 | = code_convert_string_norecord (make_unibyte_string (pinfo.pr_psargs, | |
3320 | strlen (pinfo.pr_psargs)), | |
3321 | Vlocale_coding_system, 0); | |
3322 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
3323 | } | |
3324 | ||
2d2d05d8 DN |
3325 | if (fd >= 0) |
3326 | emacs_close (fd); | |
3327 | ||
f4f634e8 DN |
3328 | UNGCPRO; |
3329 | return attrs; | |
3330 | } | |
06e111a6 | 3331 | |
f8d23104 DN |
3332 | /* The WINDOWSNT implementation is in w32.c. |
3333 | The MSDOS implementation is in dosfns.c. */ | |
c4605e09 | 3334 | #elif !defined (WINDOWSNT) && !defined (MSDOS) |
06e111a6 DN |
3335 | |
3336 | Lisp_Object | |
3337 | system_process_attributes (Lisp_Object pid) | |
3338 | { | |
9dcbe89b | 3339 | return Qnil; |
06e111a6 DN |
3340 | } |
3341 | ||
3342 | #endif /* !defined (WINDOWSNT) */ | |
3343 | ||
c4ea52a6 | 3344 | |
ab5796a9 MB |
3345 | /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf |
3346 | (do not change this comment) */ |