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Simple wrapper for make_unibyte_string, adjust font_open_by_name.
[bpt/emacs.git] / src / sysdep.c
CommitLineData
86a5659e 1/* Interfaces to system-dependent kernel and library entries.
acaf905b 2 Copyright (C) 1985-1988, 1993-1995, 1999-2012
8cabe764 3 Free Software Foundation, Inc.
86a5659e
JB		 4
5This file is part of GNU Emacs.
6
9ec0b715 7GNU Emacs is free software: you can redistribute it and/or modify
86a5659e 8it under the terms of the GNU General Public License as published by
9ec0b715
GM		 9the Free Software Foundation, either version 3 of the License, or
10(at your option) any later version.
86a5659e
JB		 11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
9ec0b715 18along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
86a5659e 19
4838e624 20#include <config.h>
2c55aacf 21#include <ctype.h>
86a5659e 22#include <signal.h>
5890e9f7 23#include <stdio.h>
86a5659e 24#include <setjmp.h>
06e111a6
DN		 25#ifdef HAVE_PWD_H
26#include <pwd.h>
27#include <grp.h>
28#endif /* HAVE_PWD_H */
06e111a6 29#include <limits.h>
d3eb3bfa 30#include <unistd.h>
53934c98 31
d1fdcab7
PE		 32#include <allocator.h>
33#include <careadlinkat.h>
67342916 34#include <ignore-value.h>
d35af63c 35#include <utimens.h>
67342916 36
86a5659e 37#include "lisp.h"
819b8f00 38#include "sysselect.h"
9ac0d9e0 39#include "blockinput.h"
86a5659e 40
7dca65a4
PE		 41#ifdef BSD_SYSTEM
42#include <sys/param.h>
b91b7e4d 43#include <sys/sysctl.h>
7dca65a4
PE		 44#endif
45
46#ifdef __FreeBSD__
b91b7e4d 47#include <sys/user.h>
d054f3fb 48#include <sys/resource.h>
b91b7e4d
EW		 49#include <math.h>
50#endif
51
fe03522b 52#ifdef WINDOWSNT
e15b6288
JR		 53#define read sys_read
54#define write sys_write
fe03522b 55#include <windows.h>
fe03522b
RS		 56#endif /* not WINDOWSNT */
57
86a5659e
JB		 58#include <sys/types.h>
59#include <sys/stat.h>
60#include <errno.h>
61
b05af5d3
PE		 62/* Get SI_SRPC_DOMAIN, if it is available. */
63#ifdef HAVE_SYS_SYSTEMINFO_H
64#include <sys/systeminfo.h>
65#endif
66
207bdbdb 67#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
207bdbdb
RS		 68#include "msdos.h"
69#include <sys/param.h>
15614e61 70#endif
207bdbdb 71
bb4bc8e2 72#include <sys/file.h>
bb4bc8e2 73#include <fcntl.h>
86a5659e 74
e04a4e0d 75#include "systty.h"
94c8642a 76#include "syswait.h"
86a5659e 77
a7ebc409 78#ifdef HAVE_SYS_UTSNAME_H
86a5659e 79#include <sys/utsname.h>
86a5659e 80#include <memory.h>
a7ebc409 81#endif /* HAVE_SYS_UTSNAME_H */
86a5659e 82
e36ec798 83#include "keyboard.h"
0137dbf7 84#include "frame.h"
86a5659e
JB		 85#include "window.h"
86#include "termhooks.h"
87#include "termchar.h"
88#include "termopts.h"
89#include "dispextern.h"
90#include "process.h"
0a125897 91#include "cm.h" /* for reset_sys_modes */
86a5659e 92
fe03522b
RS		 93#ifdef WINDOWSNT
94#include <direct.h>
95/* In process.h which conflicts with the local copy. */
96#define _P_WAIT 0
43db14bb
JB		 97int _cdecl _spawnlp (int, const char *, const char *, ...);
98int _cdecl _getpid (void);
b6682dd9 99extern char *getwd (char *);
fe03522b
RS		 100#endif
101
91bac16a
JB		 102#include "syssignal.h"
103#include "systime.h"
86a5659e 104
1fa53021
PE		 105static int emacs_get_tty (int, struct emacs_tty *);
106static int emacs_set_tty (int, struct emacs_tty *, int);
5d4cb038 107#if defined TIOCNOTTY || defined USG5 || defined CYGWIN
845ca893 108static _Noreturn void croak (char *);
5d4cb038 109#endif
1fa53021 110
5a16b9bc
PE		 111/* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
112#ifndef ULLONG_MAX
113#define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
114#endif
115
ff2e8052
DN		 116/* Declare here, including term.h is problematic on some systems. */
117extern void tputs (const char *, int, int (*)(int));
118
91433552 119static const int baud_convert[] =
86a5659e
JB		 120 {
121 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
122 1800, 2400, 4800, 9600, 19200, 38400
123 };
86a5659e 124
f78f1a83 125
3480d92b 126#if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
f78f1a83 127
b6682dd9 128/* Return the current working directory. Returns NULL on errors.
f78f1a83
EZ		 129 Any other returned value must be freed with free. This is used
130 only when get_current_dir_name is not defined on the system. */
131char*
cf84bb53 132get_current_dir_name (void)
f78f1a83
EZ		 133{
134 char *buf;
135 char *pwd;
136 struct stat dotstat, pwdstat;
137 /* If PWD is accurate, use it instead of calling getwd. PWD is
138 sometimes a nicer name, and using it may avoid a fatal error if a
139 parent directory is searchable but not readable. */
140 if ((pwd = getenv ("PWD")) != 0
141 && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1])))
142 && stat (pwd, &pwdstat) == 0
143 && stat (".", &dotstat) == 0
144 && dotstat.st_ino == pwdstat.st_ino
145 && dotstat.st_dev == pwdstat.st_dev
146#ifdef MAXPATHLEN
147 && strlen (pwd) < MAXPATHLEN
148#endif
149 )
150 {
38182d90 151 buf = malloc (strlen (pwd) + 1);
f78f1a83
EZ		 152 if (!buf)
153 return NULL;
154 strcpy (buf, pwd);
155 }
156#ifdef HAVE_GETCWD
157 else
158 {
159 size_t buf_size = 1024;
38182d90 160 buf = malloc (buf_size);
f78f1a83
EZ		 161 if (!buf)
162 return NULL;
163 for (;;)
164 {
165 if (getcwd (buf, buf_size) == buf)
166 break;
167 if (errno != ERANGE)
168 {
169 int tmp_errno = errno;
170 free (buf);
171 errno = tmp_errno;
172 return NULL;
173 }
174 buf_size *= 2;
38182d90 175 buf = realloc (buf, buf_size);
f78f1a83
EZ		 176 if (!buf)
177 return NULL;
178 }
179 }
180#else
181 else
182 {
183 /* We need MAXPATHLEN here. */
38182d90 184 buf = malloc (MAXPATHLEN + 1);
f78f1a83
EZ		 185 if (!buf)
186 return NULL;
187 if (getwd (buf) == NULL)
188 {
189 int tmp_errno = errno;
190 free (buf);
191 errno = tmp_errno;
192 return NULL;
193 }
194 }
195#endif
196 return buf;
197}
198#endif
199
64e971c3 200\f
9628b887 201/* Discard pending input on all input descriptors. */
91bac16a 202
08633194 203void
971de7fb 204discard_tty_input (void)
86a5659e 205{
fe03522b 206#ifndef WINDOWSNT
91bac16a 207 struct emacs_tty buf;
86a5659e
JB		 208
209 if (noninteractive)
210 return;
211
fe03522b 212#ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
207bdbdb 213 while (dos_keyread () != -1)
fe03522b 214 ;
207bdbdb 215#else /* not MSDOS */
9628b887 216 {
28d7d09f 217 struct tty_display_info *tty;
9628b887
KL		 218 for (tty = tty_list; tty; tty = tty->next)
219 {
0b0d3e0b
KL		 220 if (tty->input) /* Is the device suspended? */
221 {
12e610e8
DN		 222 emacs_get_tty (fileno (tty->input), &buf);
223 emacs_set_tty (fileno (tty->input), &buf, 0);
0b0d3e0b 224 }
9628b887
KL		 225 }
226 }
207bdbdb 227#endif /* not MSDOS */
fe03522b 228#endif /* not WINDOWSNT */
86a5659e
JB		 229}
230
16c290d8 231\f
86a5659e
JB		 232#ifdef SIGTSTP
233
64e971c3 234/* Arrange for character C to be read as the next input from
16c290d8
KL		 235 the terminal.
236 XXX What if we have multiple ttys?
237*/
64e971c3 238
dfcf069d 239void
0c2338d8 240stuff_char (char c)
86a5659e 241{
428a555e 242 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
23dab951
RS		 243 return;
244
86a5659e
JB		 245/* Should perhaps error if in batch mode */
246#ifdef TIOCSTI
0b0d3e0b 247 ioctl (fileno (CURTTY()->input), TIOCSTI, &c);
86a5659e 248#else /* no TIOCSTI */
71f06467 249 error ("Cannot stuff terminal input characters in this version of Unix");
86a5659e
JB		 250#endif /* no TIOCSTI */
251}
252
253#endif /* SIGTSTP */
64e971c3 254\f
08633194 255void
16c290d8 256init_baud_rate (int fd)
86a5659e 257{
4c620157 258 int emacs_ospeed;
67342916 259
86a5659e 260 if (noninteractive)
5bdd7bdd 261 emacs_ospeed = 0;
86a5659e
JB		 262 else
263 {
fe03522b 264#ifdef DOS_NT
5bdd7bdd 265 emacs_ospeed = 15;
fe03522b 266#else /* not DOS_NT */
e04a4e0d 267 struct termios sg;
91bac16a 268
71f06467 269 sg.c_cflag = B9600;
16c290d8 270 tcgetattr (fd, &sg);
5bdd7bdd 271 emacs_ospeed = cfgetospeed (&sg);
fe03522b 272#endif /* not DOS_NT */
86a5659e 273 }
177c0ea7 274
5bdd7bdd
GM		 275 baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0]
276 ? baud_convert[emacs_ospeed] : 9600);
86a5659e
JB		 277 if (baud_rate == 0)
278 baud_rate = 1200;
279}
280
16c290d8 281\f
86a5659e 282
1fa53021
PE		 283/* Set nonzero to make following function work under dbx
284 (at least for bsd). */
285int wait_debugging EXTERNALLY_VISIBLE;
86a5659e 286
77defa9a 287#ifndef MSDOS
86a5659e 288
e7a6747f 289static void
d311d28c 290wait_for_termination_1 (pid_t pid, int interruptible)
86a5659e
JB		 291{
292 while (1)
293 {
5e617bc2 294#if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
4c8975ad
RS		 295 /* Note that kill returns -1 even if the process is just a zombie now.
296 But inevitably a SIGCHLD interrupt should be generated
297 and child_sig will do wait3 and make the process go away. */
298 /* There is some indication that there is a bug involved with
299 termination of subprocesses, perhaps involving a kernel bug too,
300 but no idea what it is. Just as a hunch we signal SIGCHLD to see
301 if that causes the problem to go away or get worse. */
302 sigsetmask (sigmask (SIGCHLD));
303 if (0 > kill (pid, 0))
fe03522b 304 {
4c8975ad
RS		 305 sigsetmask (SIGEMPTYMASK);
306 kill (getpid (), SIGCHLD);
307 break;
308 }
309 if (wait_debugging)
310 sleep (1);
311 else
312 sigpause (SIGEMPTYMASK);
2a633456 313#else /* not BSD_SYSTEM, and not HPUX version >= 6 */
d6dae14b
EZ		 314#ifdef WINDOWSNT
315 wait (0);
316 break;
317#else /* not WINDOWSNT */
9ab714c7 318 sigblock (sigmask (SIGCHLD));
59957f85
GM		 319 errno = 0;
320 if (kill (pid, 0) == -1 && errno == ESRCH)
9ab714c7
RS		 321 {
322 sigunblock (sigmask (SIGCHLD));
323 break;
324 }
ac3ac859 325
0fdcb867 326 sigsuspend (&empty_mask);
d6dae14b 327#endif /* not WINDOWSNT */
2a633456 328#endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
1ef14cb4
LMI		 329 if (interruptible)
330 QUIT;
86a5659e
JB		 331 }
332}
333
e7a6747f
AS		 334/* Wait for subprocess with process id `pid' to terminate and
335 make sure it will get eliminated (not remain forever as a zombie) */
336
337void
d311d28c 338wait_for_termination (pid_t pid)
e7a6747f
AS		 339{
340 wait_for_termination_1 (pid, 0);
341}
342
343/* Like the above, but allow keyboard interruption. */
344void
d311d28c 345interruptible_wait_for_termination (pid_t pid)
e7a6747f
AS		 346{
347 wait_for_termination_1 (pid, 1);
348}
349
86a5659e
JB		 350/*
351 * flush any pending output
352 * (may flush input as well; it does not matter the way we use it)
353 */
177c0ea7 354
08633194 355void
971de7fb 356flush_pending_output (int channel)
86a5659e 357{
9de940b5 358 /* FIXME: maybe this function should be removed */
86a5659e 359}
64e971c3 360\f
86a5659e
JB		 361/* Set up the terminal at the other end of a pseudo-terminal that
362 we will be controlling an inferior through.
363 It should not echo or do line-editing, since that is done
364 in Emacs. No padding needed for insertion into an Emacs buffer. */
365
08633194 366void
971de7fb 367child_setup_tty (int out)
86a5659e 368{
77defa9a 369#ifndef WINDOWSNT
91bac16a
JB		 370 struct emacs_tty s;
371
12e610e8 372 emacs_get_tty (out, &s);
91bac16a
JB		 373 s.main.c_oflag |= OPOST; /* Enable output postprocessing */
374 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
9d4e5eea 375#ifdef NLDLY
07cfc4e7
GM		 376 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
377 Some versions of GNU Hurd do not have FFDLY? */
378#ifdef FFDLY
91bac16a
JB		 379 s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY);
380 /* No output delays */
07cfc4e7
GM		 381#else
382 s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY);
383 /* No output delays */
384#endif
9d4e5eea 385#endif
91bac16a
JB		 386 s.main.c_lflag &= ~ECHO; /* Disable echo */
387 s.main.c_lflag |= ISIG; /* Enable signals */
9d4e5eea
RS		 388#ifdef IUCLC
389 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */
390#endif
f7097b2a
RS		 391#ifdef ISTRIP
392 s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
393#endif
23e4c8be 394#ifdef OLCUC
9d4e5eea
RS		 395 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */
396#endif
f7097b2a 397 s.main.c_oflag &= ~TAB3; /* Disable tab expansion */
1bf96fb5 398 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
441f6399
RS		 399 s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */
400 s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */
91bac16a 401
86a5659e 402#ifdef HPUX
91bac16a 403 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
86a5659e 404#endif /* HPUX */
91bac16a 405
dfe598b5
RS		 406#ifdef SIGNALS_VIA_CHARACTERS
407 /* the QUIT and INTR character are used in process_send_signal
408 so set them here to something useful. */
fa51fa32 409 if (s.main.c_cc[VQUIT] == CDISABLE)
dfe598b5 410 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */
fa51fa32 411 if (s.main.c_cc[VINTR] == CDISABLE)
dfe598b5
RS		 412 s.main.c_cc[VINTR] = 'C'&037; /* Control-C */
413#endif /* not SIGNALS_VIA_CHARACTERS */
414
86a5659e 415#ifdef AIX
86a5659e
JB		 416 /* Also, PTY overloads NUL and BREAK.
417 don't ignore break, but don't signal either, so it looks like NUL. */
91bac16a
JB		 418 s.main.c_iflag &= ~IGNBRK;
419 s.main.c_iflag &= ~BRKINT;
dfe598b5
RS		 420 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
421 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
422 would force it to 0377. That looks like duplicated code. */
91bac16a 423 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
86a5659e
JB		 424#endif /* AIX */
425
aaa0a19a 426 /* We originally enabled ICANON (and set VEOF to 04), and then had
c80e3b4a 427 process.c send additional EOF chars to flush the output when faced
aaa0a19a 428 with long lines, but this leads to weird effects when the
2b0a91e7
SM		 429 subprocess has disabled ICANON and ends up seeing those spurious
430 extra EOFs. So we don't send EOFs any more in
aaa0a19a
SM		 431 process.c:send_process. First we tried to disable ICANON by
432 default, so if a subsprocess sets up ICANON, it's his problem (or
433 the Elisp package that talks to it) to deal with lines that are
434 too long. But this disables some features, such as the ability
435 to send EOF signals. So we re-enabled ICANON but there is no
436 more "send eof to flush" going on (which is wrong and unportable
437 in itself). The correct way to handle too much output is to
438 buffer what could not be written and then write it again when
439 select returns ok for writing. This has it own set of
440 problems. Write is now asynchronous, is that a problem? How much
441 do we buffer, and what do we do when that limit is reached? */
9a747ba6
JD		 442
443 s.main.c_lflag |= ICANON; /* Enable line editing and eof processing */
444 s.main.c_cc[VEOF] = 'D'&037; /* Control-D */
3d15fe78 445#if 0 /* These settings only apply to non-ICANON mode. */
2b0a91e7
SM		 446 s.main.c_cc[VMIN] = 1;
447 s.main.c_cc[VTIME] = 0;
aaa0a19a 448#endif
2b0a91e7 449
12e610e8 450 emacs_set_tty (out, &s, 0);
77defa9a 451#endif /* not WINDOWSNT */
86a5659e 452}
57507bf8 453#endif /* not MSDOS */
86a5659e 454
64e971c3 455\f
86a5659e
JB		 456/* Record a signal code and the handler for it. */
457struct save_signal
458{
459 int code;
9af30bdf 460 void (*handler) (int);
86a5659e
JB		 461};
462
f57e2426
J		 463static void save_signal_handlers (struct save_signal *);
464static void restore_signal_handlers (struct save_signal *);
35a05cca 465
86a5659e
JB		 466/* Suspend the Emacs process; give terminal to its superior. */
467
08633194 468void
971de7fb 469sys_suspend (void)
86a5659e 470{
c4ea52a6 471#if defined (SIGTSTP) && !defined (MSDOS)
86a5659e 472
5a570e37 473 {
e89a2cd5 474 int pgrp = EMACS_GETPGRP (0);
5a570e37
JB		 475 EMACS_KILLPG (pgrp, SIGTSTP);
476 }
86a5659e
JB		 477
478#else /* No SIGTSTP */
86a5659e
JB		 479/* On a system where suspending is not implemented,
480 instead fork a subshell and let it talk directly to the terminal
481 while we wait. */
a0932daa
KH		 482 sys_subshell ();
483
a0932daa 484#endif /* no SIGTSTP */
a0932daa
KH		 485}
486
487/* Fork a subshell. */
488
08633194 489void
971de7fb 490sys_subshell (void)
a0932daa 491{
ad00c243 492#ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
a0932daa
KH		 493 int st;
494 char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */
495#endif
efa04277 496 int pid;
86a5659e 497 struct save_signal saved_handlers[5];
efa04277 498 Lisp_Object dir;
5e41f65d 499 unsigned char *volatile str_volatile = 0;
7e9123a2 500 unsigned char *str;
efa04277 501 int len;
86a5659e
JB		 502
503 saved_handlers[0].code = SIGINT;
504 saved_handlers[1].code = SIGQUIT;
505 saved_handlers[2].code = SIGTERM;
506#ifdef SIGIO
507 saved_handlers[3].code = SIGIO;
508 saved_handlers[4].code = 0;
509#else
510 saved_handlers[3].code = 0;
511#endif
512
efa04277
RS		 513 /* Mentioning current_buffer->buffer would mean including buffer.h,
514 which somehow wedges the hp compiler. So instead... */
515
516 dir = intern ("default-directory");
0e7e7a58 517 if (NILP (Fboundp (dir)))
efa04277
RS		 518 goto xyzzy;
519 dir = Fsymbol_value (dir);
914e81a2 520 if (!STRINGP (dir))
efa04277
RS		 521 goto xyzzy;
522
523 dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil);
38182d90 524 str_volatile = str = alloca (SCHARS (dir) + 2);
d5db4077 525 len = SCHARS (dir);
72af86bd 526 memcpy (str, SDATA (dir), len);
efa04277
RS		 527 if (str[len - 1] != '/') str[len++] = '/';
528 str[len] = 0;
529 xyzzy:
530
ad00c243 531#ifdef DOS_NT
7964ba9e 532 pid = 0;
718ca3cf
RS		 533 save_signal_handlers (saved_handlers);
534 synch_process_alive = 1;
177c0ea7 535#else
efa04277 536 pid = vfork ();
86a5659e
JB		 537 if (pid == -1)
538 error ("Can't spawn subshell");
7964ba9e
RS		 539#endif
540
86a5659e
JB		 541 if (pid == 0)
542 {
8ea90aa3 543 const char *sh = 0;
86a5659e 544
ad00c243 545#ifdef DOS_NT /* MW, Aug 1993 */
207bdbdb 546 getwd (oldwd);
7964ba9e
RS		 547 if (sh == 0)
548 sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
207bdbdb 549#endif
7964ba9e
RS		 550 if (sh == 0)
551 sh = (char *) egetenv ("SHELL");
86a5659e
JB		 552 if (sh == 0)
553 sh = "sh";
207bdbdb 554
86a5659e 555 /* Use our buffer's default directory for the subshell. */
5e41f65d 556 str = str_volatile;
32299e33
PE		 557 if (str && chdir ((char *) str) != 0)
558 {
559#ifndef DOS_NT
560 ignore_value (write (1, "Can't chdir\n", 12));
561 _exit (1);
562#endif
563 }
efa04277 564
86a5659e 565 close_process_descs (); /* Close Emacs's pipes/ptys */
1593c2fe 566
fe03522b 567#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
c0917202 568 {
48178f9a
EZ		 569 char *epwd = getenv ("PWD");
570 char old_pwd[MAXPATHLEN+1+4];
c0917202
EZ		 571
572 /* If PWD is set, pass it with corrected value. */
48178f9a 573 if (epwd)
c0917202 574 {
48178f9a 575 strcpy (old_pwd, epwd);
c0917202
EZ		 576 if (str[len - 1] == '/')
577 str[len - 1] = '\0';
578 setenv ("PWD", str, 1);
579 }
580 st = system (sh);
32299e33 581 chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */
48178f9a 582 if (epwd)
c0917202
EZ		 583 putenv (old_pwd); /* restore previous value */
584 }
207bdbdb 585#else /* not MSDOS */
fe03522b 586#ifdef WINDOWSNT
fe03522b
RS		 587 /* Waits for process completion */
588 pid = _spawnlp (_P_WAIT, sh, sh, NULL);
32299e33 589 chdir (oldwd); /* FIXME: Do the right thing on chdir failure. */
fe03522b
RS		 590 if (pid == -1)
591 write (1, "Can't execute subshell", 22);
fe03522b 592#else /* not WINDOWSNT */
e120ea40 593 execlp (sh, sh, (char *) 0);
67342916 594 ignore_value (write (1, "Can't execute subshell", 22));
86a5659e 595 _exit (1);
fe03522b 596#endif /* not WINDOWSNT */
207bdbdb 597#endif /* not MSDOS */
86a5659e
JB		 598 }
599
718ca3cf 600 /* Do this now if we did not do it before. */
ed68db4d 601#ifndef MSDOS
86a5659e 602 save_signal_handlers (saved_handlers);
ffafc793 603 synch_process_alive = 1;
718ca3cf
RS		 604#endif
605
ad00c243 606#ifndef DOS_NT
86a5659e 607 wait_for_termination (pid);
7964ba9e 608#endif
86a5659e 609 restore_signal_handlers (saved_handlers);
718ca3cf 610 synch_process_alive = 0;
86a5659e
JB		 611}
612
35a05cca 613static void
971de7fb 614save_signal_handlers (struct save_signal *saved_handlers)
86a5659e
JB		 615{
616 while (saved_handlers->code)
617 {
508b171c 618 saved_handlers->handler
9af30bdf 619 = (void (*) (int)) signal (saved_handlers->code, SIG_IGN);
86a5659e
JB		 620 saved_handlers++;
621 }
622}
623
35a05cca 624static void
971de7fb 625restore_signal_handlers (struct save_signal *saved_handlers)
86a5659e
JB		 626{
627 while (saved_handlers->code)
628 {
629 signal (saved_handlers->code, saved_handlers->handler);
630 saved_handlers++;
631 }
632}
633\f
4d553a13
KL		 634#ifndef SIGIO
635/* If SIGIO is broken, don't do anything. */
636void
637init_sigio (int fd)
638{
639}
640
604efe86 641static void
4d553a13
KL		 642reset_sigio (int fd)
643{
644}
645
646void
647request_sigio (void)
648{
649}
650
651void
652unrequest_sigio (void)
653{
654}
655
656#else
86a5659e
JB		 657#ifdef F_SETFL
658
1fa53021 659static int old_fcntl_flags[MAXDESC];
86a5659e 660
08633194 661void
971de7fb 662init_sigio (int fd)
86a5659e
JB		 663{
664#ifdef FASYNC
819b8f00
KL		 665 old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC;
666 fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC);
86a5659e 667#endif
23dab951 668 interrupts_deferred = 0;
86a5659e
JB		 669}
670
604efe86 671static void
971de7fb 672reset_sigio (int fd)
86a5659e 673{
4d553a13 674#ifdef FASYNC
819b8f00 675 fcntl (fd, F_SETFL, old_fcntl_flags[fd]);
4d553a13 676#endif
86a5659e
JB		 677}
678
eb8c3be9 679#ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
428a555e 680/* XXX Uhm, FASYNC is not used anymore here. */
6d8cf830 681/* XXX Yeah, but you need it for SIGIO, don't you? */
86a5659e 682
08633194 683void
971de7fb 684request_sigio (void)
86a5659e 685{
6bbba5a6 686 if (noninteractive)
23dab951
RS		 687 return;
688
86a5659e 689#ifdef SIGWINCH
e065a56e 690 sigunblock (sigmask (SIGWINCH));
86a5659e 691#endif
0a125897 692 sigunblock (sigmask (SIGIO));
86a5659e
JB		 693
694 interrupts_deferred = 0;
695}
696
08633194 697void
0a125897 698unrequest_sigio (void)
cf84bb53 699{
6bbba5a6
KL		 700 if (noninteractive)
701 return;
702
703#if 0 /* XXX What's wrong with blocking SIGIO under X? */
704 if (x_display_list)
23dab951 705 return;
428a555e 706#endif
6bbba5a6 707
86a5659e 708#ifdef SIGWINCH
e065a56e 709 sigblock (sigmask (SIGWINCH));
86a5659e 710#endif
0a125897 711 sigblock (sigmask (SIGIO));
86a5659e
JB		 712 interrupts_deferred = 1;
713}
714
715#else /* no FASYNC */
feb67dfe 716#ifndef MSDOS
25ab68af 717
08633194 718void
cf84bb53 719request_sigio (void)
86a5659e 720{
6e5b2385 721 if (noninteractive || read_socket_hook)
23dab951
RS		 722 return;
723
86a5659e
JB		 724 croak ("request_sigio");
725}
177c0ea7 726
08633194 727void
cf84bb53 728unrequest_sigio (void)
86a5659e 729{
6e5b2385 730 if (noninteractive || read_socket_hook)
23dab951
RS		 731 return;
732
86a5659e
JB		 733 croak ("unrequest_sigio");
734}
feb67dfe
EZ		 735
736#endif /* MSDOS */
86a5659e
JB		 737#endif /* FASYNC */
738#endif /* F_SETFL */
4d553a13 739#endif /* SIGIO */
9ae8f997 740
9ae8f997 741\f
68936329
JB		 742/* Getting and setting emacs_tty structures. */
743
744/* Set *TC to the parameters associated with the terminal FD.
745 Return zero if all's well, or -1 if we ran into an error we
746 couldn't deal with. */
747int
971de7fb 748emacs_get_tty (int fd, struct emacs_tty *settings)
68936329
JB		 749{
750 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
a7ebc409 751#ifndef DOS_NT
68936329 752 /* We have those nifty POSIX tcmumbleattr functions. */
72af86bd 753 memset (&settings->main, 0, sizeof (settings->main));
68936329
JB		 754 if (tcgetattr (fd, &settings->main) < 0)
755 return -1;
68936329
JB		 756#endif
757
758 /* We have survived the tempest. */
759 return 0;
760}
761
762
763/* Set the parameters of the tty on FD according to the contents of
394049ec 764 *SETTINGS. If FLUSHP is non-zero, we discard input.
68936329 765 Return 0 if all went well, and -1 if anything failed. */
394049ec 766
68936329 767int
971de7fb 768emacs_set_tty (int fd, struct emacs_tty *settings, int flushp)
68936329
JB		 769{
770 /* Set the primary parameters - baud rate, character size, etcetera. */
a7ebc409 771#ifndef DOS_NT
e6cc3307 772 int i;
68936329
JB		 773 /* We have those nifty POSIX tcmumbleattr functions.
774 William J. Smith <wjs@wiis.wang.com> writes:
c4ea52a6 775 "POSIX 1003.1 defines tcsetattr to return success if it was
68936329
JB		 776 able to perform any of the requested actions, even if some
777 of the requested actions could not be performed.
778 We must read settings back to ensure tty setup properly.
779 AIX requires this to keep tty from hanging occasionally." */
eb8c3be9 780 /* This make sure that we don't loop indefinitely in here. */
e6cc3307 781 for (i = 0 ; i < 10 ; i++)
394049ec 782 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0)
68936329
JB		 783 {
784 if (errno == EINTR)
785 continue;
786 else
787 return -1;
788 }
789 else
790 {
791 struct termios new;
792
72af86bd 793 memset (&new, 0, sizeof (new));
68936329
JB		 794 /* Get the current settings, and see if they're what we asked for. */
795 tcgetattr (fd, &new);
e6cc3307
RS		 796 /* We cannot use memcmp on the whole structure here because under
797 * aix386 the termios structure has some reserved field that may
798 * not be filled in.
799 */
800 if ( new.c_iflag == settings->main.c_iflag
801 && new.c_oflag == settings->main.c_oflag
802 && new.c_cflag == settings->main.c_cflag
803 && new.c_lflag == settings->main.c_lflag
c4ea52a6 804 && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0)
68936329 805 break;
e6cc3307
RS		 806 else
807 continue;
68936329 808 }
68936329 809#endif
177c0ea7 810
68936329
JB		 811 /* We have survived the tempest. */
812 return 0;
813}
814
815\f
86a5659e
JB		 816
817#ifdef F_SETOWN
1fa53021 818static int old_fcntl_owner[MAXDESC];
86a5659e
JB		 819#endif /* F_SETOWN */
820
86a5659e
JB		 821/* This may also be defined in stdio,
822 but if so, this does no harm,
823 and using the same name avoids wasting the other one's space. */
824
9d9a7716 825#if defined (USG)
86a5659e
JB		 826unsigned char _sobuf[BUFSIZ+8];
827#else
828char _sobuf[BUFSIZ];
829#endif
177c0ea7 830
da8e1115
KL		 831/* Initialize the terminal mode on all tty devices that are currently
832 open. */
833
08633194 834void
28d440ab
KL		 835init_all_sys_modes (void)
836{
28d7d09f 837 struct tty_display_info *tty;
16c290d8 838 for (tty = tty_list; tty; tty = tty->next)
28d440ab 839 init_sys_modes (tty);
28d440ab
KL		 840}
841
da8e1115
KL		 842/* Initialize the terminal mode on the given tty device. */
843
28d440ab 844void
971de7fb 845init_sys_modes (struct tty_display_info *tty_out)
86a5659e 846{
91bac16a 847 struct emacs_tty tty;
e112cc37 848 Lisp_Object terminal;
91bac16a 849
4ec5cb58
RS		 850 Vtty_erase_char = Qnil;
851
86a5659e
JB		 852 if (noninteractive)
853 return;
854
0b0d3e0b
KL		 855 if (!tty_out->output)
856 return; /* The tty is suspended. */
cf84bb53 857
2246281f 858 if (! tty_out->old_tty)
38182d90 859 tty_out->old_tty = xmalloc (sizeof *tty_out->old_tty);
cf84bb53 860
12e610e8 861 emacs_get_tty (fileno (tty_out->input), tty_out->old_tty);
23dab951 862
2246281f 863 tty = *tty_out->old_tty;
86a5659e 864
a7ebc409 865#if !defined (DOS_NT)
2246281f 866 XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]);
4ec5cb58 867
2246281f
KL		 868 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */
869 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */
7f371164
RS		 870#ifdef INLCR /* I'm just being cautious,
871 since I can't check how widespread INLCR is--rms. */
2246281f 872 tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */
7f371164 873#endif
86a5659e 874#ifdef ISTRIP
2246281f 875 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
86a5659e 876#endif
2246281f
KL		 877 tty.main.c_lflag &= ~ECHO; /* Disable echo */
878 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */
e2b40c23 879#ifdef IEXTEN
2246281f 880 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */
e2b40c23 881#endif
2246281f
KL		 882 tty.main.c_lflag |= ISIG; /* Enable signals */
883 if (tty_out->flow_control)
884 {
885 tty.main.c_iflag |= IXON; /* Enable start/stop output control */
86a5659e 886#ifdef IXANY
2246281f 887 tty.main.c_iflag &= ~IXANY;
86a5659e 888#endif /* IXANY */
2246281f
KL		 889 }
890 else
891 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */
892 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL
893 on output */
894 tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */
86a5659e 895#ifdef CS8
2246281f
KL		 896 if (tty_out->meta_key)
897 {
898 tty.main.c_cflag |= CS8; /* allow 8th bit on input */
899 tty.main.c_cflag &= ~PARENB;/* Don't check parity */
900 }
86a5659e 901#endif
e112cc37
ET		 902
903 XSETTERMINAL(terminal, tty_out->terminal);
904 if (!NILP (Fcontrolling_tty_p (terminal)))
2246281f
KL		 905 {
906 tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */
907 /* Set up C-g for both SIGQUIT and SIGINT.
908 We don't know which we will get, but we handle both alike
909 so which one it really gives us does not matter. */
910 tty.main.c_cc[VQUIT] = quit_char;
911 }
912 else
913 {
914 /* We normally don't get interrupt or quit signals from tty
915 devices other than our controlling terminal; therefore,
916 we must handle C-g as normal input. Unfortunately, this
917 means that the interrupt and quit feature must be
918 disabled on secondary ttys, or we would not even see the
919 keypress.
cf84bb53 920
2246281f
KL		 921 Note that even though emacsclient could have special code
922 to pass SIGINT to Emacs, we should _not_ enable
923 interrupt/quit keys for emacsclient frames. This means
924 that we can't break out of loops in C code from a
925 secondary tty frame, but we can always decide what
926 display the C-g came from, which is more important from a
927 usability point of view. (Consider the case when two
928 people work together using the same Emacs instance.) */
929 tty.main.c_cc[VINTR] = CDISABLE;
930 tty.main.c_cc[VQUIT] = CDISABLE;
931 }
932 tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */
933 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */
86a5659e 934#ifdef VSWTCH
2246281f 935 tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use
91bac16a 936 of C-z */
86a5659e 937#endif /* VSWTCH */
cf84bb53 938
86a5659e 939#ifdef VSUSP
a7ebc409 940 tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off handling of C-z. */
86a5659e
JB		 941#endif /* VSUSP */
942#ifdef V_DSUSP
a7ebc409 943 tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y. */
86a5659e 944#endif /* V_DSUSP */
e2b40c23 945#ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
2246281f 946 tty.main.c_cc[VDSUSP] = CDISABLE;
e2b40c23 947#endif /* VDSUSP */
92c995de 948#ifdef VLNEXT
2246281f 949 tty.main.c_cc[VLNEXT] = CDISABLE;
92c995de
RS		 950#endif /* VLNEXT */
951#ifdef VREPRINT
2246281f 952 tty.main.c_cc[VREPRINT] = CDISABLE;
92c995de
RS		 953#endif /* VREPRINT */
954#ifdef VWERASE
2246281f 955 tty.main.c_cc[VWERASE] = CDISABLE;
92c995de
RS		 956#endif /* VWERASE */
957#ifdef VDISCARD
2246281f 958 tty.main.c_cc[VDISCARD] = CDISABLE;
92c995de 959#endif /* VDISCARD */
c179a6d1 960
2246281f
KL		 961 if (tty_out->flow_control)
962 {
421dd92f 963#ifdef VSTART
2246281f 964 tty.main.c_cc[VSTART] = '\021';
421dd92f
RS		 965#endif /* VSTART */
966#ifdef VSTOP
2246281f 967 tty.main.c_cc[VSTOP] = '\023';
421dd92f 968#endif /* VSTOP */
2246281f
KL		 969 }
970 else
971 {
c179a6d1 972#ifdef VSTART
2246281f 973 tty.main.c_cc[VSTART] = CDISABLE;
c179a6d1
RS		 974#endif /* VSTART */
975#ifdef VSTOP
2246281f 976 tty.main.c_cc[VSTOP] = CDISABLE;
c179a6d1 977#endif /* VSTOP */
2246281f 978 }
c179a6d1 979
86a5659e 980#ifdef AIX
f5272227
KL		 981 tty.main.c_cc[VSTRT] = CDISABLE;
982 tty.main.c_cc[VSTOP] = CDISABLE;
983 tty.main.c_cc[VSUSP] = CDISABLE;
984 tty.main.c_cc[VDSUSP] = CDISABLE;
2246281f
KL		 985 if (tty_out->flow_control)
986 {
ac567c95 987#ifdef VSTART
2246281f 988 tty.main.c_cc[VSTART] = '\021';
ac567c95
RS		 989#endif /* VSTART */
990#ifdef VSTOP
2246281f 991 tty.main.c_cc[VSTOP] = '\023';
ac567c95 992#endif /* VSTOP */
2246281f
KL		 993 }
994 /* Also, PTY overloads NUL and BREAK.
995 don't ignore break, but don't signal either, so it looks like NUL.
996 This really serves a purpose only if running in an XTERM window
997 or via TELNET or the like, but does no harm elsewhere. */
998 tty.main.c_iflag &= ~IGNBRK;
999 tty.main.c_iflag &= ~BRKINT;
86a5659e 1000#endif
fe03522b 1001#endif /* not DOS_NT */
cf84bb53 1002
207bdbdb 1003#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
2246281f
KL		 1004 if (!tty_out->term_initted)
1005 internal_terminal_init ();
4e389d32 1006 dos_ttraw (tty_out);
207bdbdb 1007#endif
91bac16a 1008
12e610e8 1009 emacs_set_tty (fileno (tty_out->input), &tty, 0);
86a5659e 1010
2246281f
KL		 1011 /* This code added to insure that, if flow-control is not to be used,
1012 we have an unlocked terminal at the start. */
91bac16a 1013
86a5659e 1014#ifdef TCXONC
0b0d3e0b 1015 if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1);
86a5659e 1016#endif
86a5659e 1017#ifdef TIOCSTART
0b0d3e0b 1018 if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0);
86a5659e 1019#endif
86a5659e 1020
a7ebc409 1021#if !defined (DOS_NT)
51417996 1022#ifdef TCOON
0b0d3e0b 1023 if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON);
d228f207 1024#endif
51417996 1025#endif
d228f207 1026
86a5659e 1027#ifdef F_SETFL
eb8c3be9 1028#ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
2246281f 1029 if (interrupt_input)
86a5659e 1030 {
0b0d3e0b
KL		 1031 old_fcntl_owner[fileno (tty_out->input)] =
1032 fcntl (fileno (tty_out->input), F_GETOWN, 0);
1033 fcntl (fileno (tty_out->input), F_SETOWN, getpid ());
1034 init_sigio (fileno (tty_out->input));
7e5a23bd 1035#ifdef HAVE_GPM
75a8734b 1036 if (gpm_tty == tty_out)
3e748bcb 1037 {
75a8734b 1038 /* Arrange for mouse events to give us SIGIO signals. */
3e748bcb 1039 fcntl (gpm_fd, F_SETOWN, getpid ());
57669cf1 1040 fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK);
3e748bcb
NR		 1041 init_sigio (gpm_fd);
1042 }
7e5a23bd 1043#endif /* HAVE_GPM */
86a5659e
JB		 1044 }
1045#endif /* F_GETOWN */
1046#endif /* F_SETFL */
1047
86a5659e
JB		 1048#ifdef _IOFBF
1049 /* This symbol is defined on recent USG systems.
1050 Someone says without this call USG won't really buffer the file
1051 even with a call to setbuf. */
0b0d3e0b 1052 setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf);
86a5659e 1053#else
0b0d3e0b 1054 setbuf (tty_out->output, (char *) _sobuf);
86a5659e 1055#endif
4d553a13 1056
69fb5031
JR		 1057 if (tty_out->terminal->set_terminal_modes_hook)
1058 tty_out->terminal->set_terminal_modes_hook (tty_out->terminal);
4b311aaf 1059
9628b887
KL		 1060 if (!tty_out->term_initted)
1061 {
1062 Lisp_Object tail, frame;
1063 FOR_EACH_FRAME (tail, frame)
1064 {
daf01701 1065 /* XXX This needs to be revised. */
9628b887
KL		 1066 if (FRAME_TERMCAP_P (XFRAME (frame))
1067 && FRAME_TTY (XFRAME (frame)) == tty_out)
1068 init_frame_faces (XFRAME (frame));
1069 }
1070 }
045942b2 1071
9628b887 1072 if (tty_out->term_initted && no_redraw_on_reenter)
86a5659e 1073 {
855a0da7
SM		 1074 /* We used to call "direct_output_forward_char(0)" here,
1075 but it's not clear why, since it may not do anything anyway. */
86a5659e
JB		 1076 }
1077 else
1078 {
9628b887 1079 Lisp_Object tail, frame;
0137dbf7 1080 frame_garbaged = 1;
9628b887
KL		 1081 FOR_EACH_FRAME (tail, frame)
1082 {
7ab98847
EZ		 1083 if ((FRAME_TERMCAP_P (XFRAME (frame))
1084 || FRAME_MSDOS_P (XFRAME (frame)))
9628b887
KL		 1085 && FRAME_TTY (XFRAME (frame)) == tty_out)
1086 FRAME_GARBAGED_P (XFRAME (frame)) = 1;
1087 }
86a5659e 1088 }
91bac16a 1089
9628b887 1090 tty_out->term_initted = 1;
86a5659e
JB		 1091}
1092
1093/* Return nonzero if safe to use tabs in output.
1094 At the time this is called, init_sys_modes has not been done yet. */
177c0ea7 1095
dfcf069d 1096int
16c290d8 1097tabs_safe_p (int fd)
86a5659e 1098{
6548cf00 1099 struct emacs_tty etty;
91bac16a 1100
12e610e8
DN		 1101 emacs_get_tty (fd, &etty);
1102#ifndef DOS_NT
1103#ifdef TABDLY
1104 return ((etty.main.c_oflag & TABDLY) != TAB3);
1105#else /* not TABDLY */
1106 return 1;
1107#endif /* not TABDLY */
1108#else /* DOS_NT */
1109 return 0;
1110#endif /* DOS_NT */
86a5659e 1111}
73d5358f 1112\f
86a5659e 1113/* Get terminal size from system.
73d5358f
RS		 1114 Store number of lines into *HEIGHTP and width into *WIDTHP.
1115 We store 0 if there's no valid information. */
86a5659e 1116
08633194 1117void
16c290d8 1118get_tty_size (int fd, int *widthp, int *heightp)
86a5659e 1119{
e16e55d4 1120#if defined TIOCGWINSZ
91bac16a
JB		 1121
1122 /* BSD-style. */
86a5659e 1123 struct winsize size;
91bac16a 1124
16c290d8 1125 if (ioctl (fd, TIOCGWINSZ, &size) == -1)
91bac16a
JB		 1126 *widthp = *heightp = 0;
1127 else
1128 {
1129 *widthp = size.ws_col;
1130 *heightp = size.ws_row;
1131 }
1132
e16e55d4 1133#elif defined TIOCGSIZE
91bac16a
JB		 1134
1135 /* SunOS - style. */
177c0ea7 1136 struct ttysize size;
91bac16a 1137
16c290d8 1138 if (ioctl (fd, TIOCGSIZE, &size) == -1)
91bac16a
JB		 1139 *widthp = *heightp = 0;
1140 else
1141 {
1142 *widthp = size.ts_cols;
1143 *heightp = size.ts_lines;
1144 }
1145
e16e55d4
JB		 1146#elif defined WINDOWSNT
1147
1148 CONSOLE_SCREEN_BUFFER_INFO info;
1149 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info))
1150 {
1151 *widthp = info.srWindow.Right - info.srWindow.Left + 1;
1152 *heightp = info.srWindow.Bottom - info.srWindow.Top + 1;
1153 }
1154 else
1155 *widthp = *heightp = 0;
1156
1157#elif defined MSDOS
1158
207bdbdb
RS		 1159 *widthp = ScreenCols ();
1160 *heightp = ScreenRows ();
e16e55d4 1161
86a5659e 1162#else /* system doesn't know size */
e16e55d4 1163
86a5659e
JB		 1164 *widthp = 0;
1165 *heightp = 0;
e16e55d4 1166
207bdbdb 1167#endif
86a5659e 1168}
91bac16a 1169
73d5358f
RS		 1170/* Set the logical window size associated with descriptor FD
1171 to HEIGHT and WIDTH. This is used mainly with ptys. */
1172
1173int
971de7fb 1174set_window_size (int fd, int height, int width)
73d5358f
RS		 1175{
1176#ifdef TIOCSWINSZ
1177
1178 /* BSD-style. */
1179 struct winsize size;
1180 size.ws_row = height;
1181 size.ws_col = width;
1182
1183 if (ioctl (fd, TIOCSWINSZ, &size) == -1)
1184 return 0; /* error */
1185 else
1186 return 1;
1187
1188#else
1189#ifdef TIOCSSIZE
1190
1191 /* SunOS - style. */
177c0ea7 1192 struct ttysize size;
73d5358f
RS		 1193 size.ts_lines = height;
1194 size.ts_cols = width;
1195
1196 if (ioctl (fd, TIOCGSIZE, &size) == -1)
1197 return 0;
1198 else
1199 return 1;
1200#else
1201 return -1;
1202#endif /* not SunOS-style */
1203#endif /* not BSD-style */
1204}
1205
86a5659e 1206\f
da8e1115
KL		 1207
1208/* Prepare all terminal devices for exiting Emacs. */
1209
28d440ab
KL		 1210void
1211reset_all_sys_modes (void)
1212{
28d7d09f 1213 struct tty_display_info *tty;
16c290d8 1214 for (tty = tty_list; tty; tty = tty->next)
28d440ab 1215 reset_sys_modes (tty);
28d440ab
KL		 1216}
1217
0a125897 1218/* Prepare the terminal for closing it; move the cursor to the
0137dbf7 1219 bottom of the frame, turn off interrupt-driven I/O, etc. */
da8e1115 1220
08633194 1221void
971de7fb 1222reset_sys_modes (struct tty_display_info *tty_out)
86a5659e
JB		 1223{
1224 if (noninteractive)
1225 {
1226 fflush (stdout);
1227 return;
1228 }
9628b887 1229 if (!tty_out->term_initted)
86a5659e 1230 return;
da8e1115 1231
0b0d3e0b
KL		 1232 if (!tty_out->output)
1233 return; /* The tty is suspended. */
cf84bb53 1234
da8e1115
KL		 1235 /* Go to and clear the last line of the terminal. */
1236
0a125897 1237 cmgoto (tty_out, FrameRows (tty_out) - 1, 0);
cf84bb53 1238
da8e1115
KL		 1239 /* Code adapted from tty_clear_end_of_line. */
1240 if (tty_out->TS_clr_line)
1241 {
1242 emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc);
1243 }
1244 else
1245 { /* have to do it the hard way */
1246 int i;
ed8dad6b 1247 tty_turn_off_insert (tty_out);
cf84bb53 1248
da8e1115 1249 for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++)
0b0d3e0b
KL		 1250 {
1251 fputc (' ', tty_out->output);
1252 }
da8e1115 1253 }
cf84bb53 1254
0a125897 1255 cmgoto (tty_out, FrameRows (tty_out) - 1, 0);
819b8f00 1256 fflush (tty_out->output);
cf84bb53 1257
69fb5031
JR		 1258 if (tty_out->terminal->reset_terminal_modes_hook)
1259 tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal);
2f98e6e3 1260
2a633456 1261#ifdef BSD_SYSTEM
86a5659e 1262 /* Avoid possible loss of output when changing terminal modes. */
0b0d3e0b 1263 fsync (fileno (tty_out->output));
86a5659e 1264#endif
91bac16a 1265
86a5659e 1266#ifdef F_SETFL
eb8c3be9 1267#ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
86a5659e
JB		 1268 if (interrupt_input)
1269 {
0b0d3e0b
KL		 1270 reset_sigio (fileno (tty_out->input));
1271 fcntl (fileno (tty_out->input), F_SETOWN,
1272 old_fcntl_owner[fileno (tty_out->input)]);
86a5659e
JB		 1273 }
1274#endif /* F_SETOWN */
a6b00318 1275#ifdef O_NDELAY
0b0d3e0b
KL		 1276 fcntl (fileno (tty_out->input), F_SETFL,
1277 fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NDELAY);
a6b00318 1278#endif
86a5659e 1279#endif /* F_SETFL */
91bac16a 1280
fca177d4 1281 if (tty_out->old_tty)
12e610e8 1282 while (emacs_set_tty (fileno (tty_out->input),
fca177d4 1283 tty_out->old_tty, 0) < 0 && errno == EINTR)
7e32a4fb 1284 ;
86a5659e 1285
207bdbdb
RS		 1286#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1287 dos_ttcooked ();
1288#endif
1289
86a5659e
JB		 1290}
1291\f
1292#ifdef HAVE_PTYS
1293
1294/* Set up the proper status flags for use of a pty. */
1295
08633194 1296void
971de7fb 1297setup_pty (int fd)
86a5659e
JB		 1298{
1299 /* I'm told that TOICREMOTE does not mean control chars
1300 "can't be sent" but rather that they don't have
1301 input-editing or signaling effects.
1302 That should be good, because we have other ways
1303 to do those things in Emacs.
1304 However, telnet mode seems not to work on 4.2.
1305 So TIOCREMOTE is turned off now. */
1306
1307 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1308 will hang. In particular, the "timeout" feature (which
1309 causes a read to return if there is no data available)
1310 does this. Also it is known that telnet mode will hang
1311 in such a way that Emacs must be stopped (perhaps this
1312 is the same problem).
177c0ea7 1313
86a5659e
JB		 1314 If TIOCREMOTE is turned off, then there is a bug in
1315 hp-ux which sometimes loses data. Apparently the
1316 code which blocks the master process when the internal
1317 buffer fills up does not work. Other than this,
1318 though, everything else seems to work fine.
177c0ea7 1319
86a5659e
JB		 1320 Since the latter lossage is more benign, we may as well
1321 lose that way. -- cph */
1322#ifdef FIONBIO
5e617bc2 1323#if defined (UNIX98_PTYS)
86a5659e
JB		 1324 {
1325 int on = 1;
1326 ioctl (fd, FIONBIO, &on);
1327 }
1328#endif
1329#endif
86a5659e
JB		 1330}
1331#endif /* HAVE_PTYS */
1332\f
f8a80313
RS		 1333#ifdef HAVE_SOCKETS
1334#include <sys/socket.h>
1335#include <netdb.h>
1336#endif /* HAVE_SOCKETS */
f8a80313 1337
8581cd64
KH		 1338#ifdef TRY_AGAIN
1339#ifndef HAVE_H_ERRNO
1340extern int h_errno;
1341#endif
1342#endif /* TRY_AGAIN */
1343
c0c86835 1344void
971de7fb 1345init_system_name (void)
86a5659e 1346{
210b2b4f 1347#ifndef HAVE_GETHOSTNAME
c0c86835
KH		 1348 struct utsname uts;
1349 uname (&uts);
1350 Vsystem_name = build_string (uts.nodename);
67004ffb 1351#else /* HAVE_GETHOSTNAME */
cc6e7269 1352 unsigned int hostname_size = 256;
38182d90 1353 char *hostname = alloca (hostname_size);
c0c86835
KH		 1354
1355 /* Try to get the host name; if the buffer is too short, try
1356 again. Apparently, the only indication gethostname gives of
1357 whether the buffer was large enough is the presence or absence
1358 of a '\0' in the string. Eech. */
1359 for (;;)
1360 {
1361 gethostname (hostname, hostname_size - 1);
1362 hostname[hostname_size - 1] = '\0';
1363
1364 /* Was the buffer large enough for the '\0'? */
1365 if (strlen (hostname) < hostname_size - 1)
1366 break;
1367
1368 hostname_size <<= 1;
38182d90 1369 hostname = alloca (hostname_size);
c0c86835 1370 }
67004ffb 1371#ifdef HAVE_SOCKETS
c0c86835
KH		 1372 /* Turn the hostname into the official, fully-qualified hostname.
1373 Don't do this if we're going to dump; this can confuse system
1374 libraries on some machines and make the dumped emacs core dump. */
67004ffb 1375#ifndef CANNOT_DUMP
c0c86835 1376 if (initialized)
67004ffb 1377#endif /* not CANNOT_DUMP */
8966b757 1378 if (! strchr (hostname, '.'))
960d894c 1379 {
960d894c 1380 int count;
3d66b985
JD		 1381#ifdef HAVE_GETADDRINFO
1382 struct addrinfo *res;
1383 struct addrinfo hints;
1384 int ret;
1385
cf84bb53 1386 memset (&hints, 0, sizeof (hints));
3d66b985
JD		 1387 hints.ai_socktype = SOCK_STREAM;
1388 hints.ai_flags = AI_CANONNAME;
1389
960d894c
KH		 1390 for (count = 0;; count++)
1391 {
3d66b985
JD		 1392 if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0
1393 || ret != EAI_AGAIN)
1394 break;
1395
1396 if (count >= 5)
1397 break;
1398 Fsleep_for (make_number (1), Qnil);
1399 }
1400
1401 if (ret == 0)
1402 {
1403 struct addrinfo *it = res;
1404 while (it)
1405 {
1406 char *fqdn = it->ai_canonname;
8966b757 1407 if (fqdn && strchr (fqdn, '.')
3d66b985
JD		 1408 && strcmp (fqdn, "localhost.localdomain") != 0)
1409 break;
1410 it = it->ai_next;
1411 }
1412 if (it)
1413 {
1414 hostname = alloca (strlen (it->ai_canonname) + 1);
1415 strcpy (hostname, it->ai_canonname);
1416 }
1417 freeaddrinfo (res);
1418 }
1419#else /* !HAVE_GETADDRINFO */
1420 struct hostent *hp;
1421 for (count = 0;; count++)
1422 {
1423
e24f1d55 1424#ifdef TRY_AGAIN
960d894c 1425 h_errno = 0;
e24f1d55 1426#endif
960d894c 1427 hp = gethostbyname (hostname);
efa04277 1428#ifdef TRY_AGAIN
960d894c
KH		 1429 if (! (hp == 0 && h_errno == TRY_AGAIN))
1430#endif
3d66b985 1431
960d894c 1432 break;
3d66b985 1433
960d894c
KH		 1434 if (count >= 5)
1435 break;
1436 Fsleep_for (make_number (1), Qnil);
1437 }
3d66b985 1438
960d894c
KH		 1439 if (hp)
1440 {
1441 char *fqdn = (char *) hp->h_name;
960d894c 1442
8966b757 1443 if (!strchr (fqdn, '.'))
960d894c
KH		 1444 {
1445 /* We still don't have a fully qualified domain name.
1446 Try to find one in the list of alternate names */
1447 char **alias = hp->h_aliases;
923721f4 1448 while (*alias
8966b757 1449 && (!strchr (*alias, '.')
923721f4 1450 || !strcmp (*alias, "localhost.localdomain")))
960d894c
KH		 1451 alias++;
1452 if (*alias)
1453 fqdn = *alias;
1454 }
1455 hostname = fqdn;
960d894c 1456 }
3d66b985 1457#endif /* !HAVE_GETADDRINFO */
960d894c 1458 }
67004ffb 1459#endif /* HAVE_SOCKETS */
c0c86835 1460 Vsystem_name = build_string (hostname);
67004ffb 1461#endif /* HAVE_GETHOSTNAME */
c0c86835
KH		 1462 {
1463 unsigned char *p;
d5db4077 1464 for (p = SDATA (Vsystem_name); *p; p++)
c0c86835
KH		 1465 if (*p == ' ' || *p == '\t')
1466 *p = '-';
1467 }
67004ffb 1468}
86a5659e 1469\f
86a5659e
JB		 1470/* POSIX signals support - DJB */
1471/* Anyone with POSIX signals should have ANSI C declarations */
1472
1fa53021 1473sigset_t empty_mask;
86a5659e 1474
d6dae14b
EZ		 1475#ifndef WINDOWSNT
1476
86a5659e
JB		 1477signal_handler_t
1478sys_signal (int signal_number, signal_handler_t action)
1479{
c639b0e3 1480 struct sigaction new_action, old_action;
86a5659e 1481 sigemptyset (&new_action.sa_mask);
e5c99298 1482 new_action.sa_handler = action;
ef874e3d
AS		 1483 new_action.sa_flags = 0;
1484#if defined (SA_RESTART)
25ab68af 1485 /* Emacs mostly works better with restartable system services. If this
55fafcf0 1486 flag exists, we probably want to turn it on here.
41f9404e
GM		 1487 However, on some systems (only hpux11 at present) this resets the
1488 timeout of `select' which means that `select' never finishes if
1489 it keeps getting signals.
1490 We define BROKEN_SA_RESTART on those systems. */
275464e7
SM		 1491 /* It's not clear why the comment above says "mostly works better". --Stef
1492 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1493 for pending input so we need long-running syscalls to be interrupted
1494 after a signal that sets the interrupt_input_pending flag. */
766f52ec
AS		 1495 /* Non-interactive keyboard input goes through stdio, where we always
1496 want restartable system calls. */
5e617bc2 1497# if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
ef874e3d
AS		 1498 if (noninteractive)
1499# endif
1500 new_action.sa_flags = SA_RESTART;
25ab68af 1501#endif
d32b2f3c 1502 sigaction (signal_number, &new_action, &old_action);
e5c99298 1503 return (old_action.sa_handler);
86a5659e
JB		 1504}
1505
d6dae14b
EZ		 1506#endif /* WINDOWSNT */
1507
e065a56e
JB		 1508#ifndef __GNUC__
1509/* If we're compiling with GCC, we don't need this function, since it
1510 can be written as a macro. */
1511sigset_t
1512sys_sigmask (int sig)
1513{
1514 sigset_t mask;
1515 sigemptyset (&mask);
1516 sigaddset (&mask, sig);
1517 return mask;
1518}
1519#endif
1520
86a5659e
JB		 1521/* I'd like to have these guys return pointers to the mask storage in here,
1522 but there'd be trouble if the code was saving multiple masks. I'll be
1523 safe and pass the structure. It normally won't be more than 2 bytes
1524 anyhow. - DJB */
1525
1526sigset_t
1527sys_sigblock (sigset_t new_mask)
1528{
1529 sigset_t old_mask;
123403e4 1530 pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
86a5659e
JB		 1531 return (old_mask);
1532}
1533
1534sigset_t
1535sys_sigunblock (sigset_t new_mask)
1536{
1537 sigset_t old_mask;
123403e4 1538 pthread_sigmask (SIG_UNBLOCK, &new_mask, &old_mask);
86a5659e
JB		 1539 return (old_mask);
1540}
1541
1542sigset_t
1543sys_sigsetmask (sigset_t new_mask)
1544{
1545 sigset_t old_mask;
123403e4 1546 pthread_sigmask (SIG_SETMASK, &new_mask, &old_mask);
86a5659e
JB		 1547 return (old_mask);
1548}
1549
86a5659e 1550\f
b80263be 1551#if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
ca9c0567
PE		 1552static char *my_sys_siglist[NSIG];
1553# ifdef sys_siglist
1554# undef sys_siglist
1555# endif
1556# define sys_siglist my_sys_siglist
1557#endif
1558
1559void
971de7fb 1560init_signals (void)
ca9c0567 1561{
ca9c0567 1562 sigemptyset (&empty_mask);
ca9c0567 1563
b80263be 1564#if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
ca9c0567
PE		 1565 if (! initialized)
1566 {
1567# ifdef SIGABRT
1568 sys_siglist[SIGABRT] = "Aborted";
1569# endif
1570# ifdef SIGAIO
1571 sys_siglist[SIGAIO] = "LAN I/O interrupt";
1572# endif
1573# ifdef SIGALRM
1574 sys_siglist[SIGALRM] = "Alarm clock";
1575# endif
1576# ifdef SIGBUS
1577 sys_siglist[SIGBUS] = "Bus error";
1578# endif
1579# ifdef SIGCLD
1580 sys_siglist[SIGCLD] = "Child status changed";
1581# endif
1582# ifdef SIGCHLD
1583 sys_siglist[SIGCHLD] = "Child status changed";
1584# endif
1585# ifdef SIGCONT
1586 sys_siglist[SIGCONT] = "Continued";
1587# endif
1588# ifdef SIGDANGER
1589 sys_siglist[SIGDANGER] = "Swap space dangerously low";
1590# endif
1591# ifdef SIGDGNOTIFY
1592 sys_siglist[SIGDGNOTIFY] = "Notification message in queue";
1593# endif
1594# ifdef SIGEMT
1595 sys_siglist[SIGEMT] = "Emulation trap";
1596# endif
1597# ifdef SIGFPE
1598 sys_siglist[SIGFPE] = "Arithmetic exception";
1599# endif
1600# ifdef SIGFREEZE
1601 sys_siglist[SIGFREEZE] = "SIGFREEZE";
1602# endif
1603# ifdef SIGGRANT
1604 sys_siglist[SIGGRANT] = "Monitor mode granted";
1605# endif
1606# ifdef SIGHUP
1607 sys_siglist[SIGHUP] = "Hangup";
1608# endif
1609# ifdef SIGILL
1610 sys_siglist[SIGILL] = "Illegal instruction";
1611# endif
1612# ifdef SIGINT
1613 sys_siglist[SIGINT] = "Interrupt";
1614# endif
1615# ifdef SIGIO
1616 sys_siglist[SIGIO] = "I/O possible";
1617# endif
1618# ifdef SIGIOINT
1619 sys_siglist[SIGIOINT] = "I/O intervention required";
1620# endif
1621# ifdef SIGIOT
1622 sys_siglist[SIGIOT] = "IOT trap";
1623# endif
1624# ifdef SIGKILL
1625 sys_siglist[SIGKILL] = "Killed";
1626# endif
1627# ifdef SIGLOST
1628 sys_siglist[SIGLOST] = "Resource lost";
1629# endif
1630# ifdef SIGLWP
1631 sys_siglist[SIGLWP] = "SIGLWP";
1632# endif
1633# ifdef SIGMSG
1634 sys_siglist[SIGMSG] = "Monitor mode data available";
1635# endif
1636# ifdef SIGPHONE
1637 sys_siglist[SIGWIND] = "SIGPHONE";
1638# endif
1639# ifdef SIGPIPE
1640 sys_siglist[SIGPIPE] = "Broken pipe";
1641# endif
1642# ifdef SIGPOLL
1643 sys_siglist[SIGPOLL] = "Pollable event occurred";
1644# endif
1645# ifdef SIGPROF
1646 sys_siglist[SIGPROF] = "Profiling timer expired";
1647# endif
1648# ifdef SIGPTY
1649 sys_siglist[SIGPTY] = "PTY I/O interrupt";
1650# endif
1651# ifdef SIGPWR
1652 sys_siglist[SIGPWR] = "Power-fail restart";
1653# endif
1654# ifdef SIGQUIT
1655 sys_siglist[SIGQUIT] = "Quit";
1656# endif
1657# ifdef SIGRETRACT
40ba43b4 1658 sys_siglist[SIGRETRACT] = "Need to relinquish monitor mode";
ca9c0567
PE		 1659# endif
1660# ifdef SIGSAK
1661 sys_siglist[SIGSAK] = "Secure attention";
1662# endif
1663# ifdef SIGSEGV
1664 sys_siglist[SIGSEGV] = "Segmentation violation";
1665# endif
1666# ifdef SIGSOUND
1667 sys_siglist[SIGSOUND] = "Sound completed";
1668# endif
1669# ifdef SIGSTOP
1670 sys_siglist[SIGSTOP] = "Stopped (signal)";
1671# endif
1672# ifdef SIGSTP
1673 sys_siglist[SIGSTP] = "Stopped (user)";
1674# endif
1675# ifdef SIGSYS
1676 sys_siglist[SIGSYS] = "Bad argument to system call";
1677# endif
1678# ifdef SIGTERM
1679 sys_siglist[SIGTERM] = "Terminated";
1680# endif
1681# ifdef SIGTHAW
1682 sys_siglist[SIGTHAW] = "SIGTHAW";
1683# endif
1684# ifdef SIGTRAP
1685 sys_siglist[SIGTRAP] = "Trace/breakpoint trap";
1686# endif
1687# ifdef SIGTSTP
1688 sys_siglist[SIGTSTP] = "Stopped (user)";
1689# endif
1690# ifdef SIGTTIN
1691 sys_siglist[SIGTTIN] = "Stopped (tty input)";
1692# endif
1693# ifdef SIGTTOU
1694 sys_siglist[SIGTTOU] = "Stopped (tty output)";
1695# endif
1696# ifdef SIGURG
1697 sys_siglist[SIGURG] = "Urgent I/O condition";
1698# endif
1699# ifdef SIGUSR1
1700 sys_siglist[SIGUSR1] = "User defined signal 1";
1701# endif
1702# ifdef SIGUSR2
1703 sys_siglist[SIGUSR2] = "User defined signal 2";
1704# endif
1705# ifdef SIGVTALRM
1706 sys_siglist[SIGVTALRM] = "Virtual timer expired";
1707# endif
1708# ifdef SIGWAITING
1709 sys_siglist[SIGWAITING] = "Process's LWPs are blocked";
1710# endif
1711# ifdef SIGWINCH
1712 sys_siglist[SIGWINCH] = "Window size changed";
1713# endif
1714# ifdef SIGWIND
1715 sys_siglist[SIGWIND] = "SIGWIND";
1716# endif
1717# ifdef SIGXCPU
1718 sys_siglist[SIGXCPU] = "CPU time limit exceeded";
1719# endif
1720# ifdef SIGXFSZ
1721 sys_siglist[SIGXFSZ] = "File size limit exceeded";
1722# endif
1723 }
b80263be 1724#endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
ca9c0567
PE		 1725}
1726\f
9927a7b1 1727#ifndef HAVE_RANDOM
4bb8c8b7
KH		 1728#ifdef random
1729#define HAVE_RANDOM
1730#endif
1731#endif
1732
1733/* Figure out how many bits the system's random number generator uses.
1734 `random' and `lrand48' are assumed to return 31 usable bits.
1735 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1736 so we'll shift it and treat it like the 15-bit USG `rand'. */
1737
1738#ifndef RAND_BITS
1739# ifdef HAVE_RANDOM
1740# define RAND_BITS 31
1741# else /* !HAVE_RANDOM */
1742# ifdef HAVE_LRAND48
1743# define RAND_BITS 31
1744# define random lrand48
1745# else /* !HAVE_LRAND48 */
1746# define RAND_BITS 15
1747# if RAND_MAX == 32767
1748# define random rand
1749# else /* RAND_MAX != 32767 */
1750# if RAND_MAX == 2147483647
1751# define random() (rand () >> 16)
1752# else /* RAND_MAX != 2147483647 */
1753# ifdef USG
1754# define random rand
1755# else
1756# define random() (rand () >> 16)
2a633456 1757# endif /* !USG */
4bb8c8b7
KH		 1758# endif /* RAND_MAX != 2147483647 */
1759# endif /* RAND_MAX != 32767 */
1760# endif /* !HAVE_LRAND48 */
1761# endif /* !HAVE_RANDOM */
1762#endif /* !RAND_BITS */
2e46c7c6 1763
4bb8c8b7 1764void
971de7fb 1765seed_random (long int arg)
86a5659e 1766{
4bb8c8b7
KH		 1767#ifdef HAVE_RANDOM
1768 srandom ((unsigned int)arg);
f8b53a82 1769#else
4bb8c8b7 1770# ifdef HAVE_LRAND48
76425a49 1771 srand48 (arg);
4bb8c8b7
KH		 1772# else
1773 srand ((unsigned int)arg);
1774# endif
2e46c7c6 1775#endif
86a5659e
JB		 1776}
1777
4bb8c8b7 1778/*
d8ed26bd
PE		 1779 * Return a nonnegative random integer out of whatever we've got.
1780 * It contains enough bits to make a random (signed) Emacs fixnum.
4bb8c8b7
KH		 1781 * This suffices even for a 64-bit architecture with a 15-bit rand.
1782 */
ede49d71 1783EMACS_INT
971de7fb 1784get_random (void)
4bb8c8b7 1785{
ede49d71
PE		 1786 EMACS_UINT val = 0;
1787 int i;
d8ed26bd
PE		 1788 for (i = 0; i < (FIXNUM_BITS + RAND_BITS - 1) / RAND_BITS; i++)
1789 val = (random () ^ (val << RAND_BITS)
1790 ^ (val >> (BITS_PER_EMACS_INT - RAND_BITS)));
1791 val ^= val >> (BITS_PER_EMACS_INT - FIXNUM_BITS);
1792 return val & INTMASK;
4bb8c8b7 1793}
7088d1ca 1794
55e5faa1
PE		 1795#ifndef HAVE_SNPRINTF
1796/* Approximate snprintf as best we can on ancient hosts that lack it. */
1797int
1798snprintf (char *buf, size_t bufsize, char const *format, ...)
1799{
1800 ptrdiff_t size = min (bufsize, PTRDIFF_MAX);
1801 ptrdiff_t nbytes = size - 1;
1802 va_list ap;
1803
1804 if (size)
1805 {
1806 va_start (ap, format);
1807 nbytes = doprnt (buf, size, format, 0, ap);
1808 va_end (ap);
1809 }
1810
1811 if (nbytes == size - 1)
1812 {
1813 /* Calculate the length of the string that would have been created
1814 had the buffer been large enough. */
1815 char stackbuf[4000];
1816 char *b = stackbuf;
1817 ptrdiff_t bsize = sizeof stackbuf;
1818 va_start (ap, format);
1819 nbytes = evxprintf (&b, &bsize, stackbuf, -1, format, ap);
1820 va_end (ap);
1821 if (b != stackbuf)
1822 xfree (b);
1823 }
1824
1825 if (INT_MAX < nbytes)
1826 {
31bed486 1827#ifdef EOVERFLOW
55e5faa1 1828 errno = EOVERFLOW;
31bed486
EZ		 1829#else
1830 errno = EDOM;
1831#endif
55e5faa1
PE		 1832 return -1;
1833 }
1834 return nbytes;
1835}
1836#endif
86a5659e 1837\f
86a5659e 1838int
971de7fb 1839emacs_open (const char *path, int oflag, int mode)
86a5659e
JB		 1840{
1841 register int rtnval;
68c45bf0 1842
86a5659e 1843 while ((rtnval = open (path, oflag, mode)) == -1
275464e7
SM		 1844 && (errno == EINTR))
1845 QUIT;
86a5659e
JB		 1846 return (rtnval);
1847}
1848
dfcf069d 1849int
971de7fb 1850emacs_close (int fd)
86a5659e 1851{
fe111daf 1852 int did_retry = 0;
86a5659e
JB		 1853 register int rtnval;
1854
1855 while ((rtnval = close (fd)) == -1
fe111daf
KH		 1856 && (errno == EINTR))
1857 did_retry = 1;
1858
1859 /* If close is interrupted SunOS 4.1 may or may not have closed the
1860 file descriptor. If it did the second close will fail with
1861 errno = EBADF. That means we have succeeded. */
1862 if (rtnval == -1 && did_retry && errno == EBADF)
1863 return 0;
1864
86a5659e
JB		 1865 return rtnval;
1866}
1867
1963a2e0
PE		 1868/* Maximum number of bytes to read or write in a single system call.
1869 This works around a serious bug in Linux kernels before 2.6.16; see
1870 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1871 It's likely to work around similar bugs in other operating systems, so do it
1872 on all platforms. Round INT_MAX down to a page size, with the conservative
1873 assumption that page sizes are at most 2**18 bytes (any kernel with a
1874 page size larger than that shouldn't have the bug). */
1875#ifndef MAX_RW_COUNT
1876#define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1877#endif
1878
273a5f82
PE		 1879/* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1880 Return the number of bytes read, which might be less than NBYTE.
1881 On error, set errno and return -1. */
d311d28c
PE		 1882ptrdiff_t
1883emacs_read (int fildes, char *buf, ptrdiff_t nbyte)
86a5659e 1884{
8a2cbd72 1885 register ssize_t rtnval;
177c0ea7 1886
71b41406
PE		 1887 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1888 passes a size that large to emacs_read. */
1889
1890 while ((rtnval = read (fildes, buf, nbyte)) == -1
275464e7
SM		 1891 && (errno == EINTR))
1892 QUIT;
86a5659e
JB		 1893 return (rtnval);
1894}
1895
273a5f82
PE		 1896/* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1897 or if a partial write occurs. Return the number of bytes written, setting
1898 errno if this is less than NBYTE. */
d311d28c
PE		 1899ptrdiff_t
1900emacs_write (int fildes, const char *buf, ptrdiff_t nbyte)
86a5659e 1901{
273a5f82 1902 ssize_t rtnval;
d311d28c 1903 ptrdiff_t bytes_written;
28272684 1904
b95520f5
BF		 1905 bytes_written = 0;
1906
273a5f82 1907 while (nbyte > 0)
b95520f5 1908 {
1963a2e0 1909 rtnval = write (fildes, buf, min (nbyte, MAX_RW_COUNT));
b95520f5 1910
273a5f82 1911 if (rtnval < 0)
b95520f5
BF		 1912 {
1913 if (errno == EINTR)
77220eeb
SM		 1914 {
1915#ifdef SYNC_INPUT
1916 /* I originally used `QUIT' but that might causes files to
1917 be truncated if you hit C-g in the middle of it. --Stef */
55310b94 1918 process_pending_signals ();
77220eeb
SM		 1919#endif
1920 continue;
1921 }
b95520f5 1922 else
273a5f82 1923 break;
b95520f5
BF		 1924 }
1925
1926 buf += rtnval;
1927 nbyte -= rtnval;
1928 bytes_written += rtnval;
1929 }
273a5f82 1930
b95520f5 1931 return (bytes_written);
86a5659e 1932}
d1fdcab7
PE		 1933
1934static struct allocator const emacs_norealloc_allocator =
1935 { xmalloc, NULL, xfree, memory_full };
1936
1937/* Get the symbolic link value of FILENAME. Return a pointer to a
1938 NUL-terminated string. If readlink fails, return NULL and set
1939 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1940 Otherwise, allocate memory and return a pointer to that memory. If
1941 memory allocation fails, diagnose and fail without returning. If
1942 successful, store the length of the symbolic link into *LINKLEN. */
1943char *
1944emacs_readlink (char const *filename, char initial_buf[READLINK_BUFSIZE])
1945{
1946 return careadlinkat (AT_FDCWD, filename, initial_buf, READLINK_BUFSIZE,
1947 &emacs_norealloc_allocator, careadlinkatcwd);
1948}
86a5659e
JB		 1949\f
1950#ifdef USG
1951/*
1952 * All of the following are for USG.
1953 *
1954 * On USG systems the system calls are INTERRUPTIBLE by signals
1955 * that the user program has elected to catch. Thus the system call
1956 * must be retried in these cases. To handle this without massive
1957 * changes in the source code, we remap the standard system call names
1958 * to names for our own functions in sysdep.c that do the system call
1959 * with retries. Actually, for portability reasons, it is good
1960 * programming practice, as this example shows, to limit all actual
eb8c3be9 1961 * system calls to a single occurrence in the source. Sure, this
86a5659e
JB		 1962 * adds an extra level of function call overhead but it is almost
1963 * always negligible. Fred Fish, Unisoft Systems Inc.
1964 */
1965
86a5659e
JB		 1966/*
1967 * Warning, this function may not duplicate 4.2 action properly
1968 * under error conditions.
1969 */
1970
15dfd3d9
PE		 1971#ifndef HAVE_GETWD
1972
86a5659e
JB		 1973#ifndef MAXPATHLEN
1974/* In 4.1, param.h fails to define this. */
1975#define MAXPATHLEN 1024
1976#endif
1977
86a5659e 1978char *
cf84bb53 1979getwd (char *pathname)
86a5659e
JB		 1980{
1981 char *npath, *spath;
cf84bb53 1982 extern char *getcwd (char *, size_t);
86a5659e 1983
9ac0d9e0 1984 BLOCK_INPUT; /* getcwd uses malloc */
86a5659e 1985 spath = npath = getcwd ((char *) 0, MAXPATHLEN);
f4a7e5bd 1986 if (spath == 0)
18b6bc73
GM		 1987 {
1988 UNBLOCK_INPUT;
1989 return spath;
1990 }
86a5659e
JB		 1991 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1992 up to first slash. Should be harmless on other systems. */
1993 while (*npath && *npath != '/')
1994 npath++;
1995 strcpy (pathname, npath);
1996 free (spath); /* getcwd uses malloc */
9ac0d9e0 1997 UNBLOCK_INPUT;
86a5659e
JB		 1998 return pathname;
1999}
2000
2001#endif /* HAVE_GETWD */
2002
86a5659e
JB		 2003/*
2004 * This function will go away as soon as all the stubs fixed. (fnf)
2005 */
2006
dfcf069d 2007void
971de7fb 2008croak (char *badfunc)
86a5659e
JB		 2009{
2010 printf ("%s not yet implemented\r\n", badfunc);
28d440ab 2011 reset_all_sys_modes ();
86a5659e
JB		 2012 exit (1);
2013}
2014
2015#endif /* USG */
2016\f
86a5659e
JB		 2017/* Directory routines for systems that don't have them. */
2018
1c97e857 2019#ifdef HAVE_DIRENT_H
86a5659e
JB		 2020
2021#include <dirent.h>
2022
9d9a7716 2023#if !defined (HAVE_CLOSEDIR)
cfdc57af 2024
86a5659e 2025int
9d9a7716 2026closedir (DIR *dirp /* stream from opendir */)
86a5659e 2027{
cfdc57af
RS		 2028 int rtnval;
2029
68c45bf0 2030 rtnval = emacs_close (dirp->dd_fd);
9ac0d9e0 2031 xfree ((char *) dirp);
cfdc57af
RS		 2032
2033 return rtnval;
86a5659e 2034}
9d9a7716 2035#endif /* not HAVE_CLOSEDIR */
1c97e857 2036#endif /* HAVE_DIRENT_H */
86a5659e 2037
23524fb9 2038\f
d35af63c
PE		 2039/* Return a struct timeval that is roughly equivalent to T.
2040 Use the least timeval not less than T.
2041 Return an extremal value if the result would overflow. */
2042struct timeval
2043make_timeval (EMACS_TIME t)
2044{
2045 struct timeval tv;
2046 tv.tv_sec = t.tv_sec;
2047 tv.tv_usec = t.tv_nsec / 1000;
2048
2049 if (t.tv_nsec % 1000 != 0)
2050 {
2051 if (tv.tv_usec < 999999)
2052 tv.tv_usec++;
2053 else if (tv.tv_sec < TYPE_MAXIMUM (time_t))
2054 {
2055 tv.tv_sec++;
2056 tv.tv_usec = 0;
2057 }
2058 }
2059
2060 return tv;
2061}
2062
2063/* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2064 ATIME and MTIME, respectively.
2065 FD must be either negative -- in which case it is ignored --
2066 or a file descriptor that is open on FILE.
2067 If FD is nonnegative, then FILE can be NULL. */
53ea491a 2068int
d35af63c
PE		 2069set_file_times (int fd, const char *filename,
2070 EMACS_TIME atime, EMACS_TIME mtime)
2071{
2072 struct timespec timespec[2];
2073 timespec[0] = atime;
2074 timespec[1] = mtime;
2075 return fdutimens (fd, filename, timespec);
53ea491a
KH		 2076}
2077\f
68c45bf0
PE		 2078#ifndef HAVE_STRSIGNAL
2079char *
cf84bb53 2080strsignal (int code)
68c45bf0
PE		 2081{
2082 char *signame = 0;
2083
2084 if (0 <= code && code < NSIG)
2085 {
68c45bf0
PE		 2086 /* Cast to suppress warning if the table has const char *. */
2087 signame = (char *) sys_siglist[code];
68c45bf0 2088 }
c4ea52a6 2089
68c45bf0
PE		 2090 return signame;
2091}
2092#endif /* HAVE_STRSIGNAL */
d888760c 2093\f
a7ebc409 2094#ifndef DOS_NT
d888760c 2095/* For make-serial-process */
cf84bb53
JB		 2096int
2097serial_open (char *port)
d888760c
GM		 2098{
2099 int fd = -1;
2100
2101 fd = emacs_open ((char*) port,
2102 O_RDWR
2103#ifdef O_NONBLOCK
2104 | O_NONBLOCK
2105#else
2106 | O_NDELAY
2107#endif
2108#ifdef O_NOCTTY
2109 | O_NOCTTY
2110#endif
2111 , 0);
2112 if (fd < 0)
2113 {
2114 error ("Could not open %s: %s",
2115 port, emacs_strerror (errno));
2116 }
2117#ifdef TIOCEXCL
2118 ioctl (fd, TIOCEXCL, (char *) 0);
2119#endif
2120
2121 return fd;
2122}
759d3f32
SM		 2123
2124#if !defined (HAVE_CFMAKERAW)
2125/* Workaround for targets which are missing cfmakeraw. */
2126/* Pasted from man page. */
cf84bb53
JB		 2127static void
2128cfmakeraw (struct termios *termios_p)
759d3f32
SM		 2129{
2130 termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
2131 termios_p->c_oflag &= ~OPOST;
2132 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
2133 termios_p->c_cflag &= ~(CSIZE|PARENB);
2134 termios_p->c_cflag |= CS8;
2135}
2136#endif /* !defined (HAVE_CFMAKERAW */
2137
2138#if !defined (HAVE_CFSETSPEED)
2139/* Workaround for targets which are missing cfsetspeed. */
cf84bb53
JB		 2140static int
2141cfsetspeed (struct termios *termios_p, speed_t vitesse)
759d3f32
SM		 2142{
2143 return (cfsetispeed (termios_p, vitesse)
2144 + cfsetospeed (termios_p, vitesse));
2145}
2146#endif
2147
d888760c
GM		 2148/* For serial-process-configure */
2149void
2150serial_configure (struct Lisp_Process *p,
cf84bb53 2151 Lisp_Object contact)
d888760c
GM		 2152{
2153 Lisp_Object childp2 = Qnil;
2154 Lisp_Object tem = Qnil;
2155 struct termios attr;
2156 int err = -1;
2157 char summary[4] = "???"; /* This usually becomes "8N1". */
2158
2159 childp2 = Fcopy_sequence (p->childp);
2160
2161 /* Read port attributes and prepare default configuration. */
2162 err = tcgetattr (p->outfd, &attr);
2163 if (err != 0)
2164 error ("tcgetattr() failed: %s", emacs_strerror (errno));
2165 cfmakeraw (&attr);
2166#if defined (CLOCAL)
2167 attr.c_cflag |= CLOCAL;
2168#endif
2169#if defined (CREAD)
6d1921be 2170 attr.c_cflag |= CREAD;
d888760c
GM		 2171#endif
2172
2173 /* Configure speed. */
2174 if (!NILP (Fplist_member (contact, QCspeed)))
2175 tem = Fplist_get (contact, QCspeed);
2176 else
2177 tem = Fplist_get (p->childp, QCspeed);
2178 CHECK_NUMBER (tem);
2179 err = cfsetspeed (&attr, XINT (tem));
2180 if (err != 0)
c2982e87 2181 error ("cfsetspeed(%"pI"d) failed: %s", XINT (tem),
5fdb398c 2182 emacs_strerror (errno));
d888760c
GM		 2183 childp2 = Fplist_put (childp2, QCspeed, tem);
2184
2185 /* Configure bytesize. */
2186 if (!NILP (Fplist_member (contact, QCbytesize)))
2187 tem = Fplist_get (contact, QCbytesize);
2188 else
2189 tem = Fplist_get (p->childp, QCbytesize);
2190 if (NILP (tem))
2191 tem = make_number (8);
2192 CHECK_NUMBER (tem);
2193 if (XINT (tem) != 7 && XINT (tem) != 8)
2194 error (":bytesize must be nil (8), 7, or 8");
cf84bb53 2195 summary[0] = XINT (tem) + '0';
d888760c
GM		 2196#if defined (CSIZE) && defined (CS7) && defined (CS8)
2197 attr.c_cflag &= ~CSIZE;
2198 attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8);
2199#else
16bad4dd 2200 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
d888760c
GM		 2201 if (XINT (tem) != 8)
2202 error ("Bytesize cannot be changed");
2203#endif
2204 childp2 = Fplist_put (childp2, QCbytesize, tem);
2205
2206 /* Configure parity. */
2207 if (!NILP (Fplist_member (contact, QCparity)))
2208 tem = Fplist_get (contact, QCparity);
2209 else
2210 tem = Fplist_get (p->childp, QCparity);
2211 if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd))
2212 error (":parity must be nil (no parity), `even', or `odd'");
2213#if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2214 attr.c_cflag &= ~(PARENB | PARODD);
2215 attr.c_iflag &= ~(IGNPAR | INPCK);
2216 if (NILP (tem))
2217 {
2218 summary[1] = 'N';
2219 }
2220 else if (EQ (tem, Qeven))
2221 {
2222 summary[1] = 'E';
2223 attr.c_cflag |= PARENB;
2224 attr.c_iflag |= (IGNPAR | INPCK);
2225 }
2226 else if (EQ (tem, Qodd))
2227 {
2228 summary[1] = 'O';
2229 attr.c_cflag |= (PARENB | PARODD);
2230 attr.c_iflag |= (IGNPAR | INPCK);
2231 }
2232#else
16bad4dd 2233 /* Don't error on no parity, which should be set by cfmakeraw. */
d888760c
GM		 2234 if (!NILP (tem))
2235 error ("Parity cannot be configured");
2236#endif
2237 childp2 = Fplist_put (childp2, QCparity, tem);
2238
2239 /* Configure stopbits. */
2240 if (!NILP (Fplist_member (contact, QCstopbits)))
2241 tem = Fplist_get (contact, QCstopbits);
2242 else
2243 tem = Fplist_get (p->childp, QCstopbits);
2244 if (NILP (tem))
2245 tem = make_number (1);
2246 CHECK_NUMBER (tem);
2247 if (XINT (tem) != 1 && XINT (tem) != 2)
2248 error (":stopbits must be nil (1 stopbit), 1, or 2");
2249 summary[2] = XINT (tem) + '0';
2250#if defined (CSTOPB)
2251 attr.c_cflag &= ~CSTOPB;
2252 if (XINT (tem) == 2)
2253 attr.c_cflag |= CSTOPB;
2254#else
16bad4dd 2255 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
d888760c
GM		 2256 if (XINT (tem) != 1)
2257 error ("Stopbits cannot be configured");
2258#endif
2259 childp2 = Fplist_put (childp2, QCstopbits, tem);
2260
2261 /* Configure flowcontrol. */
2262 if (!NILP (Fplist_member (contact, QCflowcontrol)))
2263 tem = Fplist_get (contact, QCflowcontrol);
2264 else
2265 tem = Fplist_get (p->childp, QCflowcontrol);
2266 if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw))
2267 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2268#if defined (CRTSCTS)
2269 attr.c_cflag &= ~CRTSCTS;
2270#endif
2271#if defined (CNEW_RTSCTS)
2272 attr.c_cflag &= ~CNEW_RTSCTS;
2273#endif
2274#if defined (IXON) && defined (IXOFF)
2275 attr.c_iflag &= ~(IXON | IXOFF);
2276#endif
2277 if (NILP (tem))
2278 {
2279 /* Already configured. */
2280 }
2281 else if (EQ (tem, Qhw))
2282 {
2283#if defined (CRTSCTS)
2284 attr.c_cflag |= CRTSCTS;
2285#elif defined (CNEW_RTSCTS)
2286 attr.c_cflag |= CNEW_RTSCTS;
2287#else
2288 error ("Hardware flowcontrol (RTS/CTS) not supported");
2289#endif
2290 }
2291 else if (EQ (tem, Qsw))
2292 {
2293#if defined (IXON) && defined (IXOFF)
2294 attr.c_iflag |= (IXON | IXOFF);
2295#else
2296 error ("Software flowcontrol (XON/XOFF) not supported");
2297#endif
2298 }
2299 childp2 = Fplist_put (childp2, QCflowcontrol, tem);
2300
2301 /* Activate configuration. */
2302 err = tcsetattr (p->outfd, TCSANOW, &attr);
2303 if (err != 0)
2304 error ("tcsetattr() failed: %s", emacs_strerror (errno));
2305
2306 childp2 = Fplist_put (childp2, QCsummary, build_string (summary));
2307 p->childp = childp2;
2308
2309}
a7ebc409 2310#endif /* not DOS_NT */
06e111a6
DN		 2311\f
2312/* System depended enumeration of and access to system processes a-la ps(1). */
2313
2314#ifdef HAVE_PROCFS
2315
2316/* Process enumeration and access via /proc. */
2317
2318Lisp_Object
971de7fb 2319list_system_processes (void)
06e111a6
DN		 2320{
2321 Lisp_Object procdir, match, proclist, next;
2322 struct gcpro gcpro1, gcpro2;
2323 register Lisp_Object tail;
2324
2325 GCPRO2 (procdir, match);
2326 /* For every process on the system, there's a directory in the
2327 "/proc" pseudo-directory whose name is the numeric ID of that
2328 process. */
2329 procdir = build_string ("/proc");
2330 match = build_string ("[0-9]+");
2331 proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil);
2332
2333 /* `proclist' gives process IDs as strings. Destructively convert
2334 each string into a number. */
2335 for (tail = proclist; CONSP (tail); tail = next)
2336 {
2337 next = XCDR (tail);
2338 XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil));
2339 }
2340 UNGCPRO;
2341
2342 /* directory_files_internal returns the files in reverse order; undo
2343 that. */
2344 proclist = Fnreverse (proclist);
2345 return proclist;
2346}
2347
f01769f9 2348#elif defined BSD_SYSTEM
b91b7e4d
EW		 2349
2350Lisp_Object
5790543d 2351list_system_processes (void)
b91b7e4d 2352{
f3047c75 2353#if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
f01769f9
LL		 2354 int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL};
2355#else
b91b7e4d 2356 int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PROC};
f01769f9 2357#endif
b91b7e4d
EW		 2358 size_t len;
2359 struct kinfo_proc *procs;
2360 size_t i;
2361
2362 struct gcpro gcpro1;
2363 Lisp_Object proclist = Qnil;
2364
2365 if (sysctl (mib, 3, NULL, &len, NULL, 0) != 0)
2366 return proclist;
5790543d 2367
b91b7e4d
EW		 2368 procs = xmalloc (len);
2369 if (sysctl (mib, 3, procs, &len, NULL, 0) != 0)
2370 {
2371 xfree (procs);
2372 return proclist;
2373 }
5790543d 2374
b91b7e4d
EW		 2375 GCPRO1 (proclist);
2376 len /= sizeof (struct kinfo_proc);
2377 for (i = 0; i < len; i++)
f01769f9 2378 {
f3047c75 2379#if defined DARWIN_OS || defined __NetBSD__
f01769f9 2380 proclist = Fcons (make_fixnum_or_float (procs[i].kp_proc.p_pid), proclist);
7dca65a4
PE		 2381#elif defined __OpenBSD__
2382 proclist = Fcons (make_fixnum_or_float (procs[i].p_pid), proclist);
f01769f9
LL		 2383#else
2384 proclist = Fcons (make_fixnum_or_float (procs[i].ki_pid), proclist);
2385#endif
2386 }
b91b7e4d 2387 UNGCPRO;
5790543d 2388
b91b7e4d
EW		 2389 xfree (procs);
2390
2391 return proclist;
2392}
2393
f8d23104
DN		 2394/* The WINDOWSNT implementation is in w32.c.
2395 The MSDOS implementation is in dosfns.c. */
c4605e09 2396#elif !defined (WINDOWSNT) && !defined (MSDOS)
06e111a6
DN		 2397
2398Lisp_Object
cf84bb53 2399list_system_processes (void)
06e111a6
DN		 2400{
2401 return Qnil;
2402}
91c85b70
EZ		 2403
2404#endif /* !defined (WINDOWSNT) */
06e111a6
DN		 2405
2406#ifdef GNU_LINUX
d35af63c
PE		 2407static EMACS_TIME
2408time_from_jiffies (unsigned long long tval, long hz)
2409{
2410 unsigned long long s = tval / hz;
2411 unsigned long long frac = tval % hz;
2412 int ns;
d35af63c
PE		 2413
2414 if (TYPE_MAXIMUM (time_t) < s)
2415 time_overflow ();
2416 if (LONG_MAX - 1 <= ULLONG_MAX / EMACS_TIME_RESOLUTION
2417 || frac <= ULLONG_MAX / EMACS_TIME_RESOLUTION)
2418 ns = frac * EMACS_TIME_RESOLUTION / hz;
06e111a6 2419 else
d35af63c
PE		 2420 {
2421 /* This is reachable only in the unlikely case that HZ * HZ
2422 exceeds ULLONG_MAX. It calculates an approximation that is
2423 guaranteed to be in range. */
2424 long hz_per_ns = (hz / EMACS_TIME_RESOLUTION
2425 + (hz % EMACS_TIME_RESOLUTION != 0));
2426 ns = frac / hz_per_ns;
2427 }
2428
e9a9ae03 2429 return make_emacs_time (s, ns);
06e111a6
DN		 2430}
2431
2432static Lisp_Object
2433ltime_from_jiffies (unsigned long long tval, long hz)
2434{
d35af63c
PE		 2435 EMACS_TIME t = time_from_jiffies (tval, hz);
2436 return make_lisp_time (t);
06e111a6
DN		 2437}
2438
d35af63c
PE		 2439static EMACS_TIME
2440get_up_time (void)
06e111a6
DN		 2441{
2442 FILE *fup;
e9a9ae03 2443 EMACS_TIME up = make_emacs_time (0, 0);
06e111a6
DN		 2444
2445 BLOCK_INPUT;
2446 fup = fopen ("/proc/uptime", "r");
2447
2448 if (fup)
2449 {
d35af63c
PE		 2450 unsigned long long upsec, upfrac, idlesec, idlefrac;
2451 int upfrac_start, upfrac_end, idlefrac_start, idlefrac_end;
06e111a6 2452
d35af63c
PE		 2453 if (fscanf (fup, "%llu.%n%llu%n %llu.%n%llu%n",
2454 &upsec, &upfrac_start, &upfrac, &upfrac_end,
2455 &idlesec, &idlefrac_start, &idlefrac, &idlefrac_end)
2456 == 4)
06e111a6 2457 {
d35af63c
PE		 2458 if (TYPE_MAXIMUM (time_t) < upsec)
2459 {
2460 upsec = TYPE_MAXIMUM (time_t);
2461 upfrac = EMACS_TIME_RESOLUTION - 1;
2462 }
2463 else
2464 {
2465 int upfraclen = upfrac_end - upfrac_start;
2466 for (; upfraclen < LOG10_EMACS_TIME_RESOLUTION; upfraclen++)
2467 upfrac *= 10;
2468 for (; LOG10_EMACS_TIME_RESOLUTION < upfraclen; upfraclen--)
2469 upfrac /= 10;
2470 upfrac = min (upfrac, EMACS_TIME_RESOLUTION - 1);
2471 }
e9a9ae03 2472 up = make_emacs_time (upsec, upfrac);
06e111a6
DN		 2473 }
2474 fclose (fup);
2475 }
2476 UNBLOCK_INPUT;
d35af63c
PE		 2477
2478 return up;
06e111a6
DN		 2479}
2480
2481#define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2482#define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2483
2484static Lisp_Object
f4f634e8 2485procfs_ttyname (int rdev)
06e111a6
DN		 2486{
2487 FILE *fdev = NULL;
2488 char name[PATH_MAX];
2489
2490 BLOCK_INPUT;
2491 fdev = fopen ("/proc/tty/drivers", "r");
2492
2493 if (fdev)
2494 {
2495 unsigned major;
2496 unsigned long minor_beg, minor_end;
2497 char minor[25]; /* 2 32-bit numbers + dash */
2498 char *endp;
2499
2500 while (!feof (fdev) && !ferror (fdev))
2501 {
2502 if (3 <= fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor)
2503 && major == MAJOR (rdev))
2504 {
2505 minor_beg = strtoul (minor, &endp, 0);
2506 if (*endp == '\0')
2507 minor_end = minor_beg;
2508 else if (*endp == '-')
2509 minor_end = strtoul (endp + 1, &endp, 0);
2510 else
2511 continue;
2512
2513 if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end)
2514 {
10d66ec0 2515 sprintf (name + strlen (name), "%u", MINOR (rdev));
06e111a6
DN		 2516 break;
2517 }
2518 }
2519 }
2520 fclose (fdev);
2521 }
2522 UNBLOCK_INPUT;
2523 return build_string (name);
2524}
2525
2526static unsigned long
2527procfs_get_total_memory (void)
2528{
2529 FILE *fmem = NULL;
2530 unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */
2531
2532 BLOCK_INPUT;
2533 fmem = fopen ("/proc/meminfo", "r");
2534
2535 if (fmem)
2536 {
2537 unsigned long entry_value;
2538 char entry_name[20]; /* the longest I saw is 13+1 */
2539
2540 while (!feof (fmem) && !ferror (fmem))
2541 {
2542 if (2 <= fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value)
2543 && strcmp (entry_name, "MemTotal:") == 0)
2544 {
2545 retval = entry_value;
2546 break;
2547 }
2548 }
2549 fclose (fmem);
2550 }
2551 UNBLOCK_INPUT;
2552 return retval;
2553}
2554
2555Lisp_Object
f4f634e8 2556system_process_attributes (Lisp_Object pid)
06e111a6
DN		 2557{
2558 char procfn[PATH_MAX], fn[PATH_MAX];
2559 struct stat st;
2560 struct passwd *pw;
2561 struct group *gr;
2562 long clocks_per_sec;
2563 char *procfn_end;
2564 char procbuf[1025], *p, *q;
2565 int fd;
2566 ssize_t nread;
e99a530f
PE		 2567 static char const default_cmd[] = "???";
2568 const char *cmd = default_cmd;
2569 int cmdsize = sizeof default_cmd - 1;
06e111a6 2570 char *cmdline = NULL;
e99a530f 2571 ptrdiff_t cmdline_size;
06e111a6 2572 unsigned char c;
d311d28c
PE		 2573 printmax_t proc_id;
2574 int ppid, pgrp, sess, tty, tpgid, thcount;
2575 uid_t uid;
2576 gid_t gid;
a70072c9
PE		 2577 unsigned long long u_time, s_time, cutime, cstime, start;
2578 long priority, niceness, rss;
06e111a6 2579 unsigned long minflt, majflt, cminflt, cmajflt, vsize;
d35af63c 2580 EMACS_TIME tnow, tstart, tboot, telapsed, us_time;
06e111a6
DN		 2581 double pcpu, pmem;
2582 Lisp_Object attrs = Qnil;
2583 Lisp_Object cmd_str, decoded_cmd, tem;
2584 struct gcpro gcpro1, gcpro2;
06e111a6
DN		 2585
2586 CHECK_NUMBER_OR_FLOAT (pid);
225a2cff 2587 CONS_TO_INTEGER (pid, pid_t, proc_id);
d311d28c 2588 sprintf (procfn, "/proc/%"pMd, proc_id);
06e111a6
DN		 2589 if (stat (procfn, &st) < 0)
2590 return attrs;
2591
2592 GCPRO2 (attrs, decoded_cmd);
2593
2594 /* euid egid */
2595 uid = st.st_uid;
d311d28c 2596 attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs);
06e111a6
DN		 2597 BLOCK_INPUT;
2598 pw = getpwuid (uid);
2599 UNBLOCK_INPUT;
2600 if (pw)
2601 attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs);
2602
2603 gid = st.st_gid;
d311d28c 2604 attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs);
06e111a6
DN		 2605 BLOCK_INPUT;
2606 gr = getgrgid (gid);
2607 UNBLOCK_INPUT;
2608 if (gr)
2609 attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs);
2610
2611 strcpy (fn, procfn);
2612 procfn_end = fn + strlen (fn);
2613 strcpy (procfn_end, "/stat");
2614 fd = emacs_open (fn, O_RDONLY, 0);
cf84bb53 2615 if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof (procbuf) - 1)) > 0)
06e111a6
DN		 2616 {
2617 procbuf[nread] = '\0';
2618 p = procbuf;
2619
2620 p = strchr (p, '(');
2621 if (p != NULL)
2622 {
2623 q = strrchr (p + 1, ')');
2624 /* comm */
2625 if (q != NULL)
2626 {
2627 cmd = p + 1;
2628 cmdsize = q - cmd;
2629 }
2630 }
2631 else
2632 q = NULL;
06e111a6
DN		 2633 /* Command name is encoded in locale-coding-system; decode it. */
2634 cmd_str = make_unibyte_string (cmd, cmdsize);
2635 decoded_cmd = code_convert_string_norecord (cmd_str,
2636 Vlocale_coding_system, 0);
2637 attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs);
2638
2639 if (q)
2640 {
2641 EMACS_INT ppid_eint, pgrp_eint, sess_eint, tpgid_eint, thcount_eint;
2642 p = q + 2;
2643 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2644 sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2645 &c, &ppid, &pgrp, &sess, &tty, &tpgid,
2646 &minflt, &cminflt, &majflt, &cmajflt,
a70072c9
PE		 2647 &u_time, &s_time, &cutime, &cstime,
2648 &priority, &niceness, &thcount, &start, &vsize, &rss);
06e111a6
DN		 2649 {
2650 char state_str[2];
2651
2652 state_str[0] = c;
2653 state_str[1] = '\0';
2654 tem = build_string (state_str);
2655 attrs = Fcons (Fcons (Qstate, tem), attrs);
2656 }
2657 /* Stops GCC whining about limited range of data type. */
2658 ppid_eint = ppid;
2659 pgrp_eint = pgrp;
2660 sess_eint = sess;
2661 tpgid_eint = tpgid;
2662 thcount_eint = thcount;
2663 attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid_eint)), attrs);
2664 attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp_eint)), attrs);
2665 attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess_eint)), attrs);
2666 attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs);
2667 attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid_eint)), attrs);
2668 attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs);
2669 attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs);
2670 attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), attrs);
2671 attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), attrs);
2672 clocks_per_sec = sysconf (_SC_CLK_TCK);
2673 if (clocks_per_sec < 0)
2674 clocks_per_sec = 100;
2675 attrs = Fcons (Fcons (Qutime,
a70072c9 2676 ltime_from_jiffies (u_time, clocks_per_sec)),
06e111a6
DN		 2677 attrs);
2678 attrs = Fcons (Fcons (Qstime,
a70072c9 2679 ltime_from_jiffies (s_time, clocks_per_sec)),
06e111a6 2680 attrs);
ac1e4171 2681 attrs = Fcons (Fcons (Qtime,
a70072c9
PE		 2682 ltime_from_jiffies (s_time + u_time,
2683 clocks_per_sec)),
ac1e4171 2684 attrs);
06e111a6
DN		 2685 attrs = Fcons (Fcons (Qcutime,
2686 ltime_from_jiffies (cutime, clocks_per_sec)),
2687 attrs);
2688 attrs = Fcons (Fcons (Qcstime,
2689 ltime_from_jiffies (cstime, clocks_per_sec)),
ac1e4171
EZ		 2690 attrs);
2691 attrs = Fcons (Fcons (Qctime,
2692 ltime_from_jiffies (cstime+cutime, clocks_per_sec)),
06e111a6
DN		 2693 attrs);
2694 attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs);
a70072c9 2695 attrs = Fcons (Fcons (Qnice, make_number (niceness)), attrs);
06e111a6 2696 attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs);
e9a9ae03 2697 tnow = current_emacs_time ();
d35af63c 2698 telapsed = get_up_time ();
e9a9ae03 2699 tboot = sub_emacs_time (tnow, telapsed);
d35af63c 2700 tstart = time_from_jiffies (start, clocks_per_sec);
e9a9ae03 2701 tstart = add_emacs_time (tboot, tstart);
d35af63c 2702 attrs = Fcons (Fcons (Qstart, make_lisp_time (tstart)), attrs);
06e111a6
DN		 2703 attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize/1024)), attrs);
2704 attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4*rss)), attrs);
e9a9ae03 2705 telapsed = sub_emacs_time (tnow, tstart);
d35af63c
PE		 2706 attrs = Fcons (Fcons (Qetime, make_lisp_time (telapsed)), attrs);
2707 us_time = time_from_jiffies (u_time + s_time, clocks_per_sec);
2708 pcpu = (EMACS_TIME_TO_DOUBLE (us_time)
2709 / EMACS_TIME_TO_DOUBLE (telapsed));
06e111a6
DN		 2710 if (pcpu > 1.0)
2711 pcpu = 1.0;
2712 attrs = Fcons (Fcons (Qpcpu, make_float (100 * pcpu)), attrs);
2713 pmem = 4.0 * 100 * rss / procfs_get_total_memory ();
2714 if (pmem > 100)
2715 pmem = 100;
2716 attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs);
2717 }
2718 }
2719 if (fd >= 0)
2720 emacs_close (fd);
2721
2722 /* args */
2723 strcpy (procfn_end, "/cmdline");
2724 fd = emacs_open (fn, O_RDONLY, 0);
2725 if (fd >= 0)
2726 {
fbd02d7b 2727 char ch;
fe6442b1 2728 for (cmdline_size = 0; cmdline_size < STRING_BYTES_BOUND; cmdline_size++)
06e111a6 2729 {
fe6442b1
PE		 2730 if (emacs_read (fd, &ch, 1) != 1)
2731 break;
fbd02d7b 2732 c = ch;
06e111a6
DN		 2733 if (isspace (c) || c == '\\')
2734 cmdline_size++; /* for later quoting, see below */
2735 }
2736 if (cmdline_size)
2737 {
2738 cmdline = xmalloc (cmdline_size + 1);
2739 lseek (fd, 0L, SEEK_SET);
2740 cmdline[0] = '\0';
2741 if ((nread = read (fd, cmdline, cmdline_size)) >= 0)
2742 cmdline[nread++] = '\0';
2743 else
2744 {
2745 /* Assigning zero to `nread' makes us skip the following
2746 two loops, assign zero to cmdline_size, and enter the
2747 following `if' clause that handles unknown command
2748 lines. */
2749 nread = 0;
2750 }
2751 /* We don't want trailing null characters. */
fe6442b1 2752 for (p = cmdline + nread; p > cmdline + 1 && !p[-1]; p--)
06e111a6
DN		 2753 nread--;
2754 for (p = cmdline; p < cmdline + nread; p++)
2755 {
2756 /* Escape-quote whitespace and backslashes. */
2757 if (isspace (*p) || *p == '\\')
2758 {
2759 memmove (p + 1, p, nread - (p - cmdline));
2760 nread++;
2761 *p++ = '\\';
2762 }
2763 else if (*p == '\0')
2764 *p = ' ';
2765 }
2766 cmdline_size = nread;
2767 }
2768 if (!cmdline_size)
2769 {
06e111a6
DN		 2770 cmdline_size = cmdsize + 2;
2771 cmdline = xmalloc (cmdline_size + 1);
e99a530f 2772 sprintf (cmdline, "[%.*s]", cmdsize, cmd);
06e111a6
DN		 2773 }
2774 emacs_close (fd);
2775 /* Command line is encoded in locale-coding-system; decode it. */
2776 cmd_str = make_unibyte_string (cmdline, cmdline_size);
2777 decoded_cmd = code_convert_string_norecord (cmd_str,
2778 Vlocale_coding_system, 0);
2779 xfree (cmdline);
2780 attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs);
2781 }
2782
2783 UNGCPRO;
2784 return attrs;
2785}
91c85b70 2786
f4f634e8
DN		 2787#elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2788
2789/* The <procfs.h> header does not like to be included if _LP64 is defined and
2790 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2791#if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2792#define PROCFS_FILE_OFFSET_BITS_HACK 1
2793#undef _FILE_OFFSET_BITS
2794#else
2795#define PROCFS_FILE_OFFSET_BITS_HACK 0
2796#endif
2797
2798#include <procfs.h>
2799
2800#if PROCFS_FILE_OFFSET_BITS_HACK == 1
2801#define _FILE_OFFSET_BITS 64
90efadd1
PE		 2802#ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2803#endif
f4f634e8
DN		 2804#endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2805
2806Lisp_Object
2807system_process_attributes (Lisp_Object pid)
2808{
2809 char procfn[PATH_MAX], fn[PATH_MAX];
2810 struct stat st;
2811 struct passwd *pw;
2812 struct group *gr;
2813 char *procfn_end;
2814 struct psinfo pinfo;
2815 int fd;
2816 ssize_t nread;
d311d28c
PE		 2817 printmax_t proc_id;
2818 uid_t uid;
2819 gid_t gid;
f4f634e8
DN		 2820 Lisp_Object attrs = Qnil;
2821 Lisp_Object decoded_cmd, tem;
2822 struct gcpro gcpro1, gcpro2;
f4f634e8
DN		 2823
2824 CHECK_NUMBER_OR_FLOAT (pid);
225a2cff 2825 CONS_TO_INTEGER (pid, pid_t, proc_id);
d311d28c 2826 sprintf (procfn, "/proc/%"pMd, proc_id);
f4f634e8
DN		 2827 if (stat (procfn, &st) < 0)
2828 return attrs;
2829
2830 GCPRO2 (attrs, decoded_cmd);
2831
2832 /* euid egid */
2833 uid = st.st_uid;
d311d28c 2834 attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs);
f4f634e8
DN		 2835 BLOCK_INPUT;
2836 pw = getpwuid (uid);
2837 UNBLOCK_INPUT;
2838 if (pw)
2839 attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs);
2840
2841 gid = st.st_gid;
d311d28c 2842 attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs);
f4f634e8
DN		 2843 BLOCK_INPUT;
2844 gr = getgrgid (gid);
2845 UNBLOCK_INPUT;
2846 if (gr)
2847 attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs);
2848
2849 strcpy (fn, procfn);
2850 procfn_end = fn + strlen (fn);
2851 strcpy (procfn_end, "/psinfo");
2852 fd = emacs_open (fn, O_RDONLY, 0);
2853 if (fd >= 0
cf84bb53 2854 && (nread = read (fd, (char*)&pinfo, sizeof (struct psinfo)) > 0))
f4f634e8
DN		 2855 {
2856 attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pinfo.pr_ppid)), attrs);
2857 attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pinfo.pr_pgid)), attrs);
2858 attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (pinfo.pr_sid)), attrs);
2859
2860 {
2861 char state_str[2];
2862 state_str[0] = pinfo.pr_lwp.pr_sname;
2863 state_str[1] = '\0';
2864 tem = build_string (state_str);
2865 attrs = Fcons (Fcons (Qstate, tem), attrs);
2866 }
2867
2868 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2869 need to get a string from it. */
2870
2871 /* FIXME: missing: Qtpgid */
2872
2873 /* FIXME: missing:
2874 Qminflt
2875 Qmajflt
2876 Qcminflt
2877 Qcmajflt
2878
bfe11752
DN		 2879 Qutime
2880 Qcutime
f4f634e8
DN		 2881 Qstime
2882 Qcstime
2883 Are they available? */
2884
d35af63c
PE		 2885 attrs = Fcons (Fcons (Qtime, make_lisp_time (pinfo.pr_time)), attrs);
2886 attrs = Fcons (Fcons (Qctime, make_lisp_time (pinfo.pr_ctime)), attrs);
f4f634e8
DN		 2887 attrs = Fcons (Fcons (Qpri, make_number (pinfo.pr_lwp.pr_pri)), attrs);
2888 attrs = Fcons (Fcons (Qnice, make_number (pinfo.pr_lwp.pr_nice)), attrs);
2889 attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pinfo.pr_nlwp)), attrs);
2890
d35af63c 2891 attrs = Fcons (Fcons (Qstart, make_lisp_time (pinfo.pr_start)), attrs);
f4f634e8
DN		 2892 attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (pinfo.pr_size)), attrs);
2893 attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (pinfo.pr_rssize)), attrs);
2894
773d47f6
PE		 2895 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2896 range 0 .. 2**15, representing 0.0 .. 1.0. */
63810350
PE		 2897 attrs = Fcons (Fcons (Qpcpu, make_float (100.0 / 0x8000 * pinfo.pr_pctcpu)), attrs);
2898 attrs = Fcons (Fcons (Qpmem, make_float (100.0 / 0x8000 * pinfo.pr_pctmem)), attrs);
f4f634e8
DN		 2899
2900 decoded_cmd
2901 = code_convert_string_norecord (make_unibyte_string (pinfo.pr_fname,
2902 strlen (pinfo.pr_fname)),
2903 Vlocale_coding_system, 0);
2904 attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs);
2905 decoded_cmd
2906 = code_convert_string_norecord (make_unibyte_string (pinfo.pr_psargs,
2907 strlen (pinfo.pr_psargs)),
2908 Vlocale_coding_system, 0);
2909 attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs);
2910 }
2911
2d2d05d8
DN		 2912 if (fd >= 0)
2913 emacs_close (fd);
2914
f4f634e8
DN		 2915 UNGCPRO;
2916 return attrs;
2917}
06e111a6 2918
5790543d 2919#elif defined __FreeBSD__
b91b7e4d 2920
d054f3fb
PE		 2921static EMACS_TIME
2922timeval_to_EMACS_TIME (struct timeval t)
2923{
e9a9ae03 2924 return make_emacs_time (t.tv_sec, t.tv_usec * 1000);
d054f3fb
PE		 2925}
2926
2927static Lisp_Object
db7b8d06 2928make_lisp_timeval (struct timeval t)
d054f3fb
PE		 2929{
2930 return make_lisp_time (timeval_to_EMACS_TIME (t));
2931}
2932
b91b7e4d
EW		 2933Lisp_Object
2934system_process_attributes (Lisp_Object pid)
2935{
2936 int proc_id;
5790543d 2937 int pagesize = getpagesize ();
b91b7e4d
EW		 2938 int npages;
2939 int fscale;
2940 struct passwd *pw;
2941 struct group *gr;
2942 char *ttyname;
2943 size_t len;
2944 char args[MAXPATHLEN];
2945 EMACS_TIME t, now;
5790543d 2946
b91b7e4d
EW		 2947 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID};
2948 struct kinfo_proc proc;
5790543d 2949 size_t proclen = sizeof proc;
b91b7e4d
EW		 2950
2951 struct gcpro gcpro1, gcpro2;
2952 Lisp_Object attrs = Qnil;
2953 Lisp_Object decoded_comm;
5790543d 2954
b91b7e4d 2955 CHECK_NUMBER_OR_FLOAT (pid);
af52196c 2956 CONS_TO_INTEGER (pid, int, proc_id);
b91b7e4d 2957 mib[3] = proc_id;
5790543d 2958
b91b7e4d
EW		 2959 if (sysctl (mib, 4, &proc, &proclen, NULL, 0) != 0)
2960 return attrs;
2961
2962 GCPRO2 (attrs, decoded_comm);
5790543d
PE		 2963
2964 attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (proc.ki_uid)), attrs);
2965
b91b7e4d
EW		 2966 BLOCK_INPUT;
2967 pw = getpwuid (proc.ki_uid);
2968 UNBLOCK_INPUT;
2969 if (pw)
2970 attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs);
2971
5790543d 2972 attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (proc.ki_svgid)), attrs);
b91b7e4d
EW		 2973
2974 BLOCK_INPUT;
2975 gr = getgrgid (proc.ki_svgid);
2976 UNBLOCK_INPUT;
2977 if (gr)
2978 attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs);
2979
2980 decoded_comm = code_convert_string_norecord
2981 (make_unibyte_string (proc.ki_comm, strlen (proc.ki_comm)),
2982 Vlocale_coding_system, 0);
5790543d 2983
b91b7e4d
EW		 2984 attrs = Fcons (Fcons (Qcomm, decoded_comm), attrs);
2985 {
2986 char state[2] = {'\0', '\0'};
2987 switch (proc.ki_stat)
2988 {
2989 case SRUN:
2990 state[0] = 'R';
2991 break;
2992
2993 case SSLEEP:
2994 state[0] = 'S';
2995 break;
5790543d 2996
b91b7e4d
EW		 2997 case SLOCK:
2998 state[0] = 'D';
2999 break;
3000
3001 case SZOMB:
3002 state[0] = 'Z';
3003 break;
5790543d 3004
b91b7e4d
EW		 3005 case SSTOP:
3006 state[0] = 'T';
3007 break;
3008 }
3009 attrs = Fcons (Fcons (Qstate, build_string (state)), attrs);
3010 }
5790543d 3011
b91b7e4d
EW		 3012 attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (proc.ki_ppid)), attrs);
3013 attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (proc.ki_pgid)), attrs);
3014 attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (proc.ki_sid)), attrs);
3015
3016 BLOCK_INPUT;
3017 ttyname = proc.ki_tdev == NODEV ? NULL : devname (proc.ki_tdev, S_IFCHR);
3018 UNBLOCK_INPUT;
3019 if (ttyname)
3020 attrs = Fcons (Fcons (Qtty, build_string (ttyname)), attrs);
5790543d 3021
b91b7e4d
EW		 3022 attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (proc.ki_tpgid)), attrs);
3023 attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (proc.ki_rusage.ru_minflt)), attrs);
3024 attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (proc.ki_rusage.ru_majflt)), attrs);
3025 attrs = Fcons (Fcons (Qcminflt, make_number (proc.ki_rusage_ch.ru_minflt)), attrs);
3026 attrs = Fcons (Fcons (Qcmajflt, make_number (proc.ki_rusage_ch.ru_majflt)), attrs);
3027
db7b8d06
PE		 3028 attrs = Fcons (Fcons (Qutime, make_lisp_timeval (proc.ki_rusage.ru_utime)),
3029 attrs);
3030 attrs = Fcons (Fcons (Qstime, make_lisp_timeval (proc.ki_rusage.ru_stime)),
3031 attrs);
e9a9ae03
PE		 3032 t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage.ru_utime),
3033 timeval_to_EMACS_TIME (proc.ki_rusage.ru_stime));
db7b8d06 3034 attrs = Fcons (Fcons (Qtime, make_lisp_time (t)), attrs);
b91b7e4d 3035
db7b8d06
PE		 3036 attrs = Fcons (Fcons (Qcutime,
3037 make_lisp_timeval (proc.ki_rusage_ch.ru_utime)),
3038 attrs);
3039 attrs = Fcons (Fcons (Qcstime,
3040 make_lisp_timeval (proc.ki_rusage_ch.ru_utime)),
3041 attrs);
e9a9ae03
PE		 3042 t = add_emacs_time (timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_utime),
3043 timeval_to_EMACS_TIME (proc.ki_rusage_ch.ru_stime));
db7b8d06 3044 attrs = Fcons (Fcons (Qctime, make_lisp_time (t)), attrs);
b91b7e4d 3045
5790543d
PE		 3046 attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (proc.ki_numthreads)),
3047 attrs);
b91b7e4d
EW		 3048 attrs = Fcons (Fcons (Qpri, make_number (proc.ki_pri.pri_native)), attrs);
3049 attrs = Fcons (Fcons (Qnice, make_number (proc.ki_nice)), attrs);
db7b8d06 3050 attrs = Fcons (Fcons (Qstart, make_lisp_timeval (proc.ki_start)), attrs);
b91b7e4d 3051 attrs = Fcons (Fcons (Qvsize, make_number (proc.ki_size >> 10)), attrs);
5790543d
PE		 3052 attrs = Fcons (Fcons (Qrss, make_number (proc.ki_rssize * pagesize >> 10)),
3053 attrs);
b91b7e4d 3054
e9a9ae03
PE		 3055 now = current_emacs_time ();
3056 t = sub_emacs_time (now, timeval_to_EMACS_TIME (proc.ki_start));
db7b8d06 3057 attrs = Fcons (Fcons (Qetime, make_lisp_time (t)), attrs);
b91b7e4d 3058
5790543d 3059 len = sizeof fscale;
b91b7e4d
EW		 3060 if (sysctlbyname ("kern.fscale", &fscale, &len, NULL, 0) == 0)
3061 {
5790543d 3062 double pcpu;
b91b7e4d 3063 fixpt_t ccpu;
5790543d 3064 len = sizeof ccpu;
b91b7e4d
EW		 3065 if (sysctlbyname ("kern.ccpu", &ccpu, &len, NULL, 0) == 0)
3066 {
5790543d
PE		 3067 pcpu = (100.0 * proc.ki_pctcpu / fscale
3068 / (1 - exp (proc.ki_swtime * log ((double) ccpu / fscale))));
3069 attrs = Fcons (Fcons (Qpcpu, make_fixnum_or_float (pcpu)), attrs);
b91b7e4d
EW		 3070 }
3071 }
3072
5790543d 3073 len = sizeof npages;
b91b7e4d
EW		 3074 if (sysctlbyname ("hw.availpages", &npages, &len, NULL, 0) == 0)
3075 {
5790543d
PE		 3076 double pmem = (proc.ki_flag & P_INMEM
3077 ? 100.0 * proc.ki_rssize / npages
3078 : 0);
3079 attrs = Fcons (Fcons (Qpmem, make_fixnum_or_float (pmem)), attrs);
b91b7e4d
EW		 3080 }
3081
3082 mib[2] = KERN_PROC_ARGS;
3083 len = MAXPATHLEN;
3084 if (sysctl (mib, 4, args, &len, NULL, 0) == 0)
3085 {
3086 int i;
3087 for (i = 0; i < len; i++)
3088 {
3089 if (! args[i] && i < len - 1)
3090 args[i] = ' ';
3091 }
3092
5790543d
PE		 3093 decoded_comm =
3094 (code_convert_string_norecord
d7ea76b4 3095 (build_unibyte_string (args),
5790543d 3096 Vlocale_coding_system, 0));
b91b7e4d
EW		 3097
3098 attrs = Fcons (Fcons (Qargs, decoded_comm), attrs);
3099 }
5790543d 3100
b91b7e4d
EW		 3101 UNGCPRO;
3102 return attrs;
3103}
3104
f8d23104
DN		 3105/* The WINDOWSNT implementation is in w32.c.
3106 The MSDOS implementation is in dosfns.c. */
c4605e09 3107#elif !defined (WINDOWSNT) && !defined (MSDOS)
06e111a6
DN		 3108
3109Lisp_Object
3110system_process_attributes (Lisp_Object pid)
3111{
9dcbe89b 3112 return Qnil;
06e111a6
DN		 3113}
3114
3115#endif /* !defined (WINDOWSNT) */
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