1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2012
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
22 #define SYSTIME_INLINE EXTERN_INLINE
31 #endif /* HAVE_PWD_H */
35 #include <allocator.h>
37 #include <careadlinkat.h>
38 #include <ignore-value.h>
42 #include "sysselect.h"
43 #include "blockinput.h"
46 #include <sys/param.h>
47 #include <sys/sysctl.h>
52 #include <sys/resource.h>
58 #define write sys_write
60 #endif /* not WINDOWSNT */
62 #include <sys/types.h>
66 /* Get SI_SRPC_DOMAIN, if it is available. */
67 #ifdef HAVE_SYS_SYSTEMINFO_H
68 #include <sys/systeminfo.h>
71 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
73 #include <sys/param.h>
82 #ifdef HAVE_SYS_UTSNAME_H
83 #include <sys/utsname.h>
85 #endif /* HAVE_SYS_UTSNAME_H */
90 #include "termhooks.h"
93 #include "dispextern.h"
95 #include "cm.h" /* for reset_sys_modes */
99 /* In process.h which conflicts with the local copy. */
101 int _cdecl
_spawnlp (int, const char *, const char *, ...);
102 int _cdecl
_getpid (void);
103 extern char *getwd (char *);
106 #include "syssignal.h"
109 static int emacs_get_tty (int, struct emacs_tty
*);
110 static int emacs_set_tty (int, struct emacs_tty
*, int);
111 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
112 static _Noreturn
void croak (char *);
115 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
117 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
120 /* Declare here, including term.h is problematic on some systems. */
121 extern void tputs (const char *, int, int (*)(int));
123 static const int baud_convert
[] =
125 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
126 1800, 2400, 4800, 9600, 19200, 38400
130 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
132 /* Return the current working directory. Returns NULL on errors.
133 Any other returned value must be freed with free. This is used
134 only when get_current_dir_name is not defined on the system. */
136 get_current_dir_name (void)
140 struct stat dotstat
, pwdstat
;
141 /* If PWD is accurate, use it instead of calling getwd. PWD is
142 sometimes a nicer name, and using it may avoid a fatal error if a
143 parent directory is searchable but not readable. */
144 if ((pwd
= getenv ("PWD")) != 0
145 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
146 && stat (pwd
, &pwdstat
) == 0
147 && stat (".", &dotstat
) == 0
148 && dotstat
.st_ino
== pwdstat
.st_ino
149 && dotstat
.st_dev
== pwdstat
.st_dev
151 && strlen (pwd
) < MAXPATHLEN
155 buf
= malloc (strlen (pwd
) + 1);
163 size_t buf_size
= 1024;
164 buf
= malloc (buf_size
);
169 if (getcwd (buf
, buf_size
) == buf
)
173 int tmp_errno
= errno
;
179 buf
= realloc (buf
, buf_size
);
187 /* We need MAXPATHLEN here. */
188 buf
= malloc (MAXPATHLEN
+ 1);
191 if (getwd (buf
) == NULL
)
193 int tmp_errno
= errno
;
205 /* Discard pending input on all input descriptors. */
208 discard_tty_input (void)
211 struct emacs_tty buf
;
216 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
217 while (dos_keyread () != -1)
219 #else /* not MSDOS */
221 struct tty_display_info
*tty
;
222 for (tty
= tty_list
; tty
; tty
= tty
->next
)
224 if (tty
->input
) /* Is the device suspended? */
226 emacs_get_tty (fileno (tty
->input
), &buf
);
227 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
231 #endif /* not MSDOS */
232 #endif /* not WINDOWSNT */
238 /* Arrange for character C to be read as the next input from
240 XXX What if we have multiple ttys?
246 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
249 /* Should perhaps error if in batch mode */
251 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
252 #else /* no TIOCSTI */
253 error ("Cannot stuff terminal input characters in this version of Unix");
254 #endif /* no TIOCSTI */
260 init_baud_rate (int fd
)
270 #else /* not DOS_NT */
275 emacs_ospeed
= cfgetospeed (&sg
);
276 #endif /* not DOS_NT */
279 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
280 ? baud_convert
[emacs_ospeed
] : 9600);
287 /* Set nonzero to make following function work under dbx
288 (at least for bsd). */
289 int wait_debugging EXTERNALLY_VISIBLE
;
294 wait_for_termination_1 (pid_t pid
, int interruptible
)
298 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
299 /* Note that kill returns -1 even if the process is just a zombie now.
300 But inevitably a SIGCHLD interrupt should be generated
301 and child_sig will do waitpid and make the process go away. */
302 /* There is some indication that there is a bug involved with
303 termination of subprocesses, perhaps involving a kernel bug too,
304 but no idea what it is. Just as a hunch we signal SIGCHLD to see
305 if that causes the problem to go away or get worse. */
306 sigsetmask (sigmask (SIGCHLD
));
307 if (0 > kill (pid
, 0))
309 sigsetmask (SIGEMPTYMASK
);
310 kill (getpid (), SIGCHLD
);
316 sigpause (SIGEMPTYMASK
);
317 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
321 #else /* not WINDOWSNT */
322 sigblock (sigmask (SIGCHLD
));
324 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
326 sigunblock (sigmask (SIGCHLD
));
330 sigsuspend (&empty_mask
);
331 #endif /* not WINDOWSNT */
332 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
338 /* Wait for subprocess with process id `pid' to terminate and
339 make sure it will get eliminated (not remain forever as a zombie) */
342 wait_for_termination (pid_t pid
)
344 wait_for_termination_1 (pid
, 0);
347 /* Like the above, but allow keyboard interruption. */
349 interruptible_wait_for_termination (pid_t pid
)
351 wait_for_termination_1 (pid
, 1);
355 * flush any pending output
356 * (may flush input as well; it does not matter the way we use it)
360 flush_pending_output (int channel
)
362 /* FIXME: maybe this function should be removed */
365 /* Set up the terminal at the other end of a pseudo-terminal that
366 we will be controlling an inferior through.
367 It should not echo or do line-editing, since that is done
368 in Emacs. No padding needed for insertion into an Emacs buffer. */
371 child_setup_tty (int out
)
376 emacs_get_tty (out
, &s
);
377 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
378 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
380 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
381 Some versions of GNU Hurd do not have FFDLY? */
383 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
384 /* No output delays */
386 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
387 /* No output delays */
390 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
391 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
393 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
396 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
399 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
401 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
402 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
403 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
404 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
407 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
410 #ifdef SIGNALS_VIA_CHARACTERS
411 /* the QUIT and INTR character are used in process_send_signal
412 so set them here to something useful. */
413 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
414 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
415 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
416 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
417 #endif /* not SIGNALS_VIA_CHARACTERS */
420 /* Also, PTY overloads NUL and BREAK.
421 don't ignore break, but don't signal either, so it looks like NUL. */
422 s
.main
.c_iflag
&= ~IGNBRK
;
423 s
.main
.c_iflag
&= ~BRKINT
;
424 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
425 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
426 would force it to 0377. That looks like duplicated code. */
427 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
430 /* We originally enabled ICANON (and set VEOF to 04), and then had
431 process.c send additional EOF chars to flush the output when faced
432 with long lines, but this leads to weird effects when the
433 subprocess has disabled ICANON and ends up seeing those spurious
434 extra EOFs. So we don't send EOFs any more in
435 process.c:send_process. First we tried to disable ICANON by
436 default, so if a subsprocess sets up ICANON, it's his problem (or
437 the Elisp package that talks to it) to deal with lines that are
438 too long. But this disables some features, such as the ability
439 to send EOF signals. So we re-enabled ICANON but there is no
440 more "send eof to flush" going on (which is wrong and unportable
441 in itself). The correct way to handle too much output is to
442 buffer what could not be written and then write it again when
443 select returns ok for writing. This has it own set of
444 problems. Write is now asynchronous, is that a problem? How much
445 do we buffer, and what do we do when that limit is reached? */
447 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
448 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
449 #if 0 /* These settings only apply to non-ICANON mode. */
450 s
.main
.c_cc
[VMIN
] = 1;
451 s
.main
.c_cc
[VTIME
] = 0;
454 emacs_set_tty (out
, &s
, 0);
455 #endif /* not WINDOWSNT */
457 #endif /* not MSDOS */
460 /* Record a signal code and the handler for it. */
464 void (*handler
) (int);
467 static void save_signal_handlers (struct save_signal
*);
468 static void restore_signal_handlers (struct save_signal
*);
470 /* Suspend the Emacs process; give terminal to its superior. */
475 #if defined (SIGTSTP) && !defined (MSDOS)
478 int pgrp
= EMACS_GETPGRP (0);
479 EMACS_KILLPG (pgrp
, SIGTSTP
);
482 #else /* No SIGTSTP */
483 /* On a system where suspending is not implemented,
484 instead fork a subshell and let it talk directly to the terminal
488 #endif /* no SIGTSTP */
491 /* Fork a subshell. */
496 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
498 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
501 struct save_signal saved_handlers
[5];
503 unsigned char *volatile str_volatile
= 0;
507 saved_handlers
[0].code
= SIGINT
;
508 saved_handlers
[1].code
= SIGQUIT
;
509 saved_handlers
[2].code
= SIGTERM
;
511 saved_handlers
[3].code
= SIGIO
;
512 saved_handlers
[4].code
= 0;
514 saved_handlers
[3].code
= 0;
517 /* Mentioning current_buffer->buffer would mean including buffer.h,
518 which somehow wedges the hp compiler. So instead... */
520 dir
= intern ("default-directory");
521 if (NILP (Fboundp (dir
)))
523 dir
= Fsymbol_value (dir
);
527 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
528 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
530 memcpy (str
, SDATA (dir
), len
);
531 if (str
[len
- 1] != '/') str
[len
++] = '/';
537 save_signal_handlers (saved_handlers
);
538 synch_process_alive
= 1;
542 error ("Can't spawn subshell");
549 #ifdef DOS_NT /* MW, Aug 1993 */
552 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
555 sh
= (char *) egetenv ("SHELL");
559 /* Use our buffer's default directory for the subshell. */
561 if (str
&& chdir ((char *) str
) != 0)
564 ignore_value (write (1, "Can't chdir\n", 12));
569 close_process_descs (); /* Close Emacs's pipes/ptys */
571 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
573 char *epwd
= getenv ("PWD");
574 char old_pwd
[MAXPATHLEN
+1+4];
576 /* If PWD is set, pass it with corrected value. */
579 strcpy (old_pwd
, epwd
);
580 if (str
[len
- 1] == '/')
582 setenv ("PWD", str
, 1);
585 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
587 putenv (old_pwd
); /* restore previous value */
589 #else /* not MSDOS */
591 /* Waits for process completion */
592 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
593 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
595 write (1, "Can't execute subshell", 22);
596 #else /* not WINDOWSNT */
597 execlp (sh
, sh
, (char *) 0);
598 ignore_value (write (1, "Can't execute subshell", 22));
600 #endif /* not WINDOWSNT */
601 #endif /* not MSDOS */
604 /* Do this now if we did not do it before. */
606 save_signal_handlers (saved_handlers
);
607 synch_process_alive
= 1;
611 wait_for_termination (pid
);
613 restore_signal_handlers (saved_handlers
);
614 synch_process_alive
= 0;
618 save_signal_handlers (struct save_signal
*saved_handlers
)
620 while (saved_handlers
->code
)
622 saved_handlers
->handler
623 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
629 restore_signal_handlers (struct save_signal
*saved_handlers
)
631 while (saved_handlers
->code
)
633 signal (saved_handlers
->code
, saved_handlers
->handler
);
639 /* If SIGIO is broken, don't do anything. */
656 unrequest_sigio (void)
663 static int old_fcntl_flags
[MAXDESC
];
669 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
670 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
672 interrupts_deferred
= 0;
679 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
683 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
684 /* XXX Uhm, FASYNC is not used anymore here. */
685 /* XXX Yeah, but you need it for SIGIO, don't you? */
694 sigunblock (sigmask (SIGWINCH
));
696 sigunblock (sigmask (SIGIO
));
698 interrupts_deferred
= 0;
702 unrequest_sigio (void)
707 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
713 sigblock (sigmask (SIGWINCH
));
715 sigblock (sigmask (SIGIO
));
716 interrupts_deferred
= 1;
719 #else /* no FASYNC */
725 if (noninteractive
|| read_socket_hook
)
728 croak ("request_sigio");
732 unrequest_sigio (void)
734 if (noninteractive
|| read_socket_hook
)
737 croak ("unrequest_sigio");
746 /* Getting and setting emacs_tty structures. */
748 /* Set *TC to the parameters associated with the terminal FD.
749 Return zero if all's well, or -1 if we ran into an error we
750 couldn't deal with. */
752 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
754 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
756 /* We have those nifty POSIX tcmumbleattr functions. */
757 memset (&settings
->main
, 0, sizeof (settings
->main
));
758 if (tcgetattr (fd
, &settings
->main
) < 0)
762 /* We have survived the tempest. */
767 /* Set the parameters of the tty on FD according to the contents of
768 *SETTINGS. If FLUSHP is non-zero, we discard input.
769 Return 0 if all went well, and -1 if anything failed. */
772 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
774 /* Set the primary parameters - baud rate, character size, etcetera. */
777 /* We have those nifty POSIX tcmumbleattr functions.
778 William J. Smith <wjs@wiis.wang.com> writes:
779 "POSIX 1003.1 defines tcsetattr to return success if it was
780 able to perform any of the requested actions, even if some
781 of the requested actions could not be performed.
782 We must read settings back to ensure tty setup properly.
783 AIX requires this to keep tty from hanging occasionally." */
784 /* This make sure that we don't loop indefinitely in here. */
785 for (i
= 0 ; i
< 10 ; i
++)
786 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
797 memset (&new, 0, sizeof (new));
798 /* Get the current settings, and see if they're what we asked for. */
799 tcgetattr (fd
, &new);
800 /* We cannot use memcmp on the whole structure here because under
801 * aix386 the termios structure has some reserved field that may
804 if ( new.c_iflag
== settings
->main
.c_iflag
805 && new.c_oflag
== settings
->main
.c_oflag
806 && new.c_cflag
== settings
->main
.c_cflag
807 && new.c_lflag
== settings
->main
.c_lflag
808 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
815 /* We have survived the tempest. */
822 static int old_fcntl_owner
[MAXDESC
];
823 #endif /* F_SETOWN */
825 /* This may also be defined in stdio,
826 but if so, this does no harm,
827 and using the same name avoids wasting the other one's space. */
830 unsigned char _sobuf
[BUFSIZ
+8];
835 /* Initialize the terminal mode on all tty devices that are currently
839 init_all_sys_modes (void)
841 struct tty_display_info
*tty
;
842 for (tty
= tty_list
; tty
; tty
= tty
->next
)
843 init_sys_modes (tty
);
846 /* Initialize the terminal mode on the given tty device. */
849 init_sys_modes (struct tty_display_info
*tty_out
)
851 struct emacs_tty tty
;
852 Lisp_Object terminal
;
854 Vtty_erase_char
= Qnil
;
859 if (!tty_out
->output
)
860 return; /* The tty is suspended. */
862 if (! tty_out
->old_tty
)
863 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
865 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
867 tty
= *tty_out
->old_tty
;
869 #if !defined (DOS_NT)
870 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
872 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
873 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
874 #ifdef INLCR /* I'm just being cautious,
875 since I can't check how widespread INLCR is--rms. */
876 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
879 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
881 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
882 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
884 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
886 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
887 if (tty_out
->flow_control
)
889 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
891 tty
.main
.c_iflag
&= ~IXANY
;
895 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
896 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
898 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
900 if (tty_out
->meta_key
)
902 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
903 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
907 XSETTERMINAL(terminal
, tty_out
->terminal
);
908 if (!NILP (Fcontrolling_tty_p (terminal
)))
910 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
911 /* Set up C-g for both SIGQUIT and SIGINT.
912 We don't know which we will get, but we handle both alike
913 so which one it really gives us does not matter. */
914 tty
.main
.c_cc
[VQUIT
] = quit_char
;
918 /* We normally don't get interrupt or quit signals from tty
919 devices other than our controlling terminal; therefore,
920 we must handle C-g as normal input. Unfortunately, this
921 means that the interrupt and quit feature must be
922 disabled on secondary ttys, or we would not even see the
925 Note that even though emacsclient could have special code
926 to pass SIGINT to Emacs, we should _not_ enable
927 interrupt/quit keys for emacsclient frames. This means
928 that we can't break out of loops in C code from a
929 secondary tty frame, but we can always decide what
930 display the C-g came from, which is more important from a
931 usability point of view. (Consider the case when two
932 people work together using the same Emacs instance.) */
933 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
934 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
936 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
937 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
939 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
944 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
947 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
949 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
950 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
953 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
956 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
957 #endif /* VREPRINT */
959 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
962 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
963 #endif /* VDISCARD */
965 if (tty_out
->flow_control
)
968 tty
.main
.c_cc
[VSTART
] = '\021';
971 tty
.main
.c_cc
[VSTOP
] = '\023';
977 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
980 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
985 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
986 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
987 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
988 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
989 if (tty_out
->flow_control
)
992 tty
.main
.c_cc
[VSTART
] = '\021';
995 tty
.main
.c_cc
[VSTOP
] = '\023';
998 /* Also, PTY overloads NUL and BREAK.
999 don't ignore break, but don't signal either, so it looks like NUL.
1000 This really serves a purpose only if running in an XTERM window
1001 or via TELNET or the like, but does no harm elsewhere. */
1002 tty
.main
.c_iflag
&= ~IGNBRK
;
1003 tty
.main
.c_iflag
&= ~BRKINT
;
1005 #endif /* not DOS_NT */
1007 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1008 if (!tty_out
->term_initted
)
1009 internal_terminal_init ();
1010 dos_ttraw (tty_out
);
1013 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1015 /* This code added to insure that, if flow-control is not to be used,
1016 we have an unlocked terminal at the start. */
1019 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1022 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1025 #if !defined (DOS_NT)
1027 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1032 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1033 if (interrupt_input
)
1035 old_fcntl_owner
[fileno (tty_out
->input
)] =
1036 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1037 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1038 init_sigio (fileno (tty_out
->input
));
1040 if (gpm_tty
== tty_out
)
1042 /* Arrange for mouse events to give us SIGIO signals. */
1043 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1044 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1045 init_sigio (gpm_fd
);
1047 #endif /* HAVE_GPM */
1049 #endif /* F_GETOWN */
1050 #endif /* F_SETFL */
1053 /* This symbol is defined on recent USG systems.
1054 Someone says without this call USG won't really buffer the file
1055 even with a call to setbuf. */
1056 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1058 setbuf (tty_out
->output
, (char *) _sobuf
);
1061 if (tty_out
->terminal
->set_terminal_modes_hook
)
1062 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1064 if (!tty_out
->term_initted
)
1066 Lisp_Object tail
, frame
;
1067 FOR_EACH_FRAME (tail
, frame
)
1069 /* XXX This needs to be revised. */
1070 if (FRAME_TERMCAP_P (XFRAME (frame
))
1071 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1072 init_frame_faces (XFRAME (frame
));
1076 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1078 /* We used to call "direct_output_forward_char(0)" here,
1079 but it's not clear why, since it may not do anything anyway. */
1083 Lisp_Object tail
, frame
;
1085 FOR_EACH_FRAME (tail
, frame
)
1087 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1088 || FRAME_MSDOS_P (XFRAME (frame
)))
1089 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1090 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1094 tty_out
->term_initted
= 1;
1097 /* Return nonzero if safe to use tabs in output.
1098 At the time this is called, init_sys_modes has not been done yet. */
1101 tabs_safe_p (int fd
)
1103 struct emacs_tty etty
;
1105 emacs_get_tty (fd
, &etty
);
1108 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1109 #else /* not TABDLY */
1111 #endif /* not TABDLY */
1117 /* Get terminal size from system.
1118 Store number of lines into *HEIGHTP and width into *WIDTHP.
1119 We store 0 if there's no valid information. */
1122 get_tty_size (int fd
, int *widthp
, int *heightp
)
1124 #if defined TIOCGWINSZ
1127 struct winsize size
;
1129 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1130 *widthp
= *heightp
= 0;
1133 *widthp
= size
.ws_col
;
1134 *heightp
= size
.ws_row
;
1137 #elif defined TIOCGSIZE
1139 /* SunOS - style. */
1140 struct ttysize size
;
1142 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1143 *widthp
= *heightp
= 0;
1146 *widthp
= size
.ts_cols
;
1147 *heightp
= size
.ts_lines
;
1150 #elif defined WINDOWSNT
1152 CONSOLE_SCREEN_BUFFER_INFO info
;
1153 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1155 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1156 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1159 *widthp
= *heightp
= 0;
1163 *widthp
= ScreenCols ();
1164 *heightp
= ScreenRows ();
1166 #else /* system doesn't know size */
1174 /* Set the logical window size associated with descriptor FD
1175 to HEIGHT and WIDTH. This is used mainly with ptys. */
1178 set_window_size (int fd
, int height
, int width
)
1183 struct winsize size
;
1184 size
.ws_row
= height
;
1185 size
.ws_col
= width
;
1187 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1188 return 0; /* error */
1195 /* SunOS - style. */
1196 struct ttysize size
;
1197 size
.ts_lines
= height
;
1198 size
.ts_cols
= width
;
1200 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1206 #endif /* not SunOS-style */
1207 #endif /* not BSD-style */
1212 /* Prepare all terminal devices for exiting Emacs. */
1215 reset_all_sys_modes (void)
1217 struct tty_display_info
*tty
;
1218 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1219 reset_sys_modes (tty
);
1222 /* Prepare the terminal for closing it; move the cursor to the
1223 bottom of the frame, turn off interrupt-driven I/O, etc. */
1226 reset_sys_modes (struct tty_display_info
*tty_out
)
1233 if (!tty_out
->term_initted
)
1236 if (!tty_out
->output
)
1237 return; /* The tty is suspended. */
1239 /* Go to and clear the last line of the terminal. */
1241 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1243 /* Code adapted from tty_clear_end_of_line. */
1244 if (tty_out
->TS_clr_line
)
1246 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1249 { /* have to do it the hard way */
1251 tty_turn_off_insert (tty_out
);
1253 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1255 fputc (' ', tty_out
->output
);
1259 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1260 fflush (tty_out
->output
);
1262 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1263 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1266 /* Avoid possible loss of output when changing terminal modes. */
1267 fsync (fileno (tty_out
->output
));
1271 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1272 if (interrupt_input
)
1274 reset_sigio (fileno (tty_out
->input
));
1275 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1276 old_fcntl_owner
[fileno (tty_out
->input
)]);
1278 #endif /* F_SETOWN */
1280 fcntl (fileno (tty_out
->input
), F_SETFL
,
1281 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1283 #endif /* F_SETFL */
1285 if (tty_out
->old_tty
)
1286 while (emacs_set_tty (fileno (tty_out
->input
),
1287 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1290 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1298 /* Set up the proper status flags for use of a pty. */
1303 /* I'm told that TOICREMOTE does not mean control chars
1304 "can't be sent" but rather that they don't have
1305 input-editing or signaling effects.
1306 That should be good, because we have other ways
1307 to do those things in Emacs.
1308 However, telnet mode seems not to work on 4.2.
1309 So TIOCREMOTE is turned off now. */
1311 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1312 will hang. In particular, the "timeout" feature (which
1313 causes a read to return if there is no data available)
1314 does this. Also it is known that telnet mode will hang
1315 in such a way that Emacs must be stopped (perhaps this
1316 is the same problem).
1318 If TIOCREMOTE is turned off, then there is a bug in
1319 hp-ux which sometimes loses data. Apparently the
1320 code which blocks the master process when the internal
1321 buffer fills up does not work. Other than this,
1322 though, everything else seems to work fine.
1324 Since the latter lossage is more benign, we may as well
1325 lose that way. -- cph */
1327 #if defined (UNIX98_PTYS)
1330 ioctl (fd
, FIONBIO
, &on
);
1335 #endif /* HAVE_PTYS */
1338 #include <sys/socket.h>
1340 #endif /* HAVE_SOCKETS */
1343 #ifndef HAVE_H_ERRNO
1346 #endif /* TRY_AGAIN */
1349 init_system_name (void)
1351 #ifndef HAVE_GETHOSTNAME
1354 Vsystem_name
= build_string (uts
.nodename
);
1355 #else /* HAVE_GETHOSTNAME */
1356 unsigned int hostname_size
= 256;
1357 char *hostname
= alloca (hostname_size
);
1359 /* Try to get the host name; if the buffer is too short, try
1360 again. Apparently, the only indication gethostname gives of
1361 whether the buffer was large enough is the presence or absence
1362 of a '\0' in the string. Eech. */
1365 gethostname (hostname
, hostname_size
- 1);
1366 hostname
[hostname_size
- 1] = '\0';
1368 /* Was the buffer large enough for the '\0'? */
1369 if (strlen (hostname
) < hostname_size
- 1)
1372 hostname_size
<<= 1;
1373 hostname
= alloca (hostname_size
);
1376 /* Turn the hostname into the official, fully-qualified hostname.
1377 Don't do this if we're going to dump; this can confuse system
1378 libraries on some machines and make the dumped emacs core dump. */
1381 #endif /* not CANNOT_DUMP */
1382 if (! strchr (hostname
, '.'))
1385 #ifdef HAVE_GETADDRINFO
1386 struct addrinfo
*res
;
1387 struct addrinfo hints
;
1390 memset (&hints
, 0, sizeof (hints
));
1391 hints
.ai_socktype
= SOCK_STREAM
;
1392 hints
.ai_flags
= AI_CANONNAME
;
1394 for (count
= 0;; count
++)
1396 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1397 || ret
!= EAI_AGAIN
)
1402 Fsleep_for (make_number (1), Qnil
);
1407 struct addrinfo
*it
= res
;
1410 char *fqdn
= it
->ai_canonname
;
1411 if (fqdn
&& strchr (fqdn
, '.')
1412 && strcmp (fqdn
, "localhost.localdomain") != 0)
1418 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1419 strcpy (hostname
, it
->ai_canonname
);
1423 #else /* !HAVE_GETADDRINFO */
1425 for (count
= 0;; count
++)
1431 hp
= gethostbyname (hostname
);
1433 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1440 Fsleep_for (make_number (1), Qnil
);
1445 char *fqdn
= (char *) hp
->h_name
;
1447 if (!strchr (fqdn
, '.'))
1449 /* We still don't have a fully qualified domain name.
1450 Try to find one in the list of alternate names */
1451 char **alias
= hp
->h_aliases
;
1453 && (!strchr (*alias
, '.')
1454 || !strcmp (*alias
, "localhost.localdomain")))
1461 #endif /* !HAVE_GETADDRINFO */
1463 #endif /* HAVE_SOCKETS */
1464 Vsystem_name
= build_string (hostname
);
1465 #endif /* HAVE_GETHOSTNAME */
1468 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1469 if (*p
== ' ' || *p
== '\t')
1474 /* POSIX signals support - DJB */
1475 /* Anyone with POSIX signals should have ANSI C declarations */
1477 sigset_t empty_mask
;
1482 sys_signal (int signal_number
, signal_handler_t action
)
1484 struct sigaction new_action
, old_action
;
1485 sigemptyset (&new_action
.sa_mask
);
1486 new_action
.sa_handler
= action
;
1487 new_action
.sa_flags
= 0;
1488 #if defined (SA_RESTART)
1489 /* Emacs mostly works better with restartable system services. If this
1490 flag exists, we probably want to turn it on here.
1491 However, on some systems (only hpux11 at present) this resets the
1492 timeout of `select' which means that `select' never finishes if
1493 it keeps getting signals.
1494 We define BROKEN_SA_RESTART on those systems. */
1495 /* It's not clear why the comment above says "mostly works better". --Stef
1496 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1497 for pending input so we need long-running syscalls to be interrupted
1498 after a signal that sets the interrupt_input_pending flag. */
1499 /* Non-interactive keyboard input goes through stdio, where we always
1500 want restartable system calls. */
1501 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1504 new_action
.sa_flags
= SA_RESTART
;
1506 sigaction (signal_number
, &new_action
, &old_action
);
1507 return (old_action
.sa_handler
);
1510 #endif /* WINDOWSNT */
1513 /* If we're compiling with GCC, we don't need this function, since it
1514 can be written as a macro. */
1516 sys_sigmask (int sig
)
1519 sigemptyset (&mask
);
1520 sigaddset (&mask
, sig
);
1525 /* I'd like to have these guys return pointers to the mask storage in here,
1526 but there'd be trouble if the code was saving multiple masks. I'll be
1527 safe and pass the structure. It normally won't be more than 2 bytes
1531 sys_sigblock (sigset_t new_mask
)
1534 pthread_sigmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1539 sys_sigunblock (sigset_t new_mask
)
1542 pthread_sigmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1547 sys_sigsetmask (sigset_t new_mask
)
1550 pthread_sigmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1555 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1556 static char *my_sys_siglist
[NSIG
];
1560 # define sys_siglist my_sys_siglist
1566 sigemptyset (&empty_mask
);
1568 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1572 sys_siglist
[SIGABRT
] = "Aborted";
1575 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1578 sys_siglist
[SIGALRM
] = "Alarm clock";
1581 sys_siglist
[SIGBUS
] = "Bus error";
1584 sys_siglist
[SIGCLD
] = "Child status changed";
1587 sys_siglist
[SIGCHLD
] = "Child status changed";
1590 sys_siglist
[SIGCONT
] = "Continued";
1593 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1596 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1599 sys_siglist
[SIGEMT
] = "Emulation trap";
1602 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1605 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1608 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1611 sys_siglist
[SIGHUP
] = "Hangup";
1614 sys_siglist
[SIGILL
] = "Illegal instruction";
1617 sys_siglist
[SIGINT
] = "Interrupt";
1620 sys_siglist
[SIGIO
] = "I/O possible";
1623 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1626 sys_siglist
[SIGIOT
] = "IOT trap";
1629 sys_siglist
[SIGKILL
] = "Killed";
1632 sys_siglist
[SIGLOST
] = "Resource lost";
1635 sys_siglist
[SIGLWP
] = "SIGLWP";
1638 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1641 sys_siglist
[SIGWIND
] = "SIGPHONE";
1644 sys_siglist
[SIGPIPE
] = "Broken pipe";
1647 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1650 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1653 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1656 sys_siglist
[SIGPWR
] = "Power-fail restart";
1659 sys_siglist
[SIGQUIT
] = "Quit";
1662 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1665 sys_siglist
[SIGSAK
] = "Secure attention";
1668 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1671 sys_siglist
[SIGSOUND
] = "Sound completed";
1674 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1677 sys_siglist
[SIGSTP
] = "Stopped (user)";
1680 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1683 sys_siglist
[SIGTERM
] = "Terminated";
1686 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1689 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1692 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1695 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1698 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1701 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1704 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1707 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1710 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1713 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1716 sys_siglist
[SIGWINCH
] = "Window size changed";
1719 sys_siglist
[SIGWIND
] = "SIGWIND";
1722 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1725 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1728 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1737 /* Figure out how many bits the system's random number generator uses.
1738 `random' and `lrand48' are assumed to return 31 usable bits.
1739 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1740 so we'll shift it and treat it like the 15-bit USG `rand'. */
1744 # define RAND_BITS 31
1745 # else /* !HAVE_RANDOM */
1746 # ifdef HAVE_LRAND48
1747 # define RAND_BITS 31
1748 # define random lrand48
1749 # else /* !HAVE_LRAND48 */
1750 # define RAND_BITS 15
1751 # if RAND_MAX == 32767
1752 # define random rand
1753 # else /* RAND_MAX != 32767 */
1754 # if RAND_MAX == 2147483647
1755 # define random() (rand () >> 16)
1756 # else /* RAND_MAX != 2147483647 */
1758 # define random rand
1760 # define random() (rand () >> 16)
1762 # endif /* RAND_MAX != 2147483647 */
1763 # endif /* RAND_MAX != 32767 */
1764 # endif /* !HAVE_LRAND48 */
1765 # endif /* !HAVE_RANDOM */
1766 #endif /* !RAND_BITS */
1769 seed_random (void *seed
, ptrdiff_t seed_size
)
1771 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1772 unsigned int arg
= 0;
1776 unsigned char *argp
= (unsigned char *) &arg
;
1777 unsigned char *seedp
= seed
;
1779 for (i
= 0; i
< seed_size
; i
++)
1780 argp
[i
% sizeof arg
] ^= seedp
[i
];
1784 # ifdef HAVE_LRAND48
1795 EMACS_TIME t
= current_emacs_time ();
1796 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
1797 seed_random (&v
, sizeof v
);
1801 * Return a nonnegative random integer out of whatever we've got.
1802 * It contains enough bits to make a random (signed) Emacs fixnum.
1803 * This suffices even for a 64-bit architecture with a 15-bit rand.
1810 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1811 val
= (random () ^ (val
<< RAND_BITS
)
1812 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1813 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1814 return val
& INTMASK
;
1817 #ifndef HAVE_SNPRINTF
1818 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1820 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1822 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1823 ptrdiff_t nbytes
= size
- 1;
1828 va_start (ap
, format
);
1829 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1833 if (nbytes
== size
- 1)
1835 /* Calculate the length of the string that would have been created
1836 had the buffer been large enough. */
1837 char stackbuf
[4000];
1839 ptrdiff_t bsize
= sizeof stackbuf
;
1840 va_start (ap
, format
);
1841 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1847 if (INT_MAX
< nbytes
)
1860 /* If a backtrace is available, output the top lines of it to stderr.
1861 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
1862 This function may be called from a signal handler, so it should
1863 not invoke async-unsafe functions like malloc. */
1865 emacs_backtrace (int backtrace_limit
)
1867 enum { BACKTRACE_LIMIT_MAX
= 500 };
1868 void *buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1869 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
1870 int npointers
= backtrace (buffer
, bounded_limit
+ 1);
1872 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
1873 backtrace_symbols_fd (buffer
, bounded_limit
, STDERR_FILENO
);
1874 if (bounded_limit
< npointers
)
1875 ignore_value (write (STDERR_FILENO
, "...\n", 4));
1879 /* Using emacs_abort lets GDB return from a breakpoint here. */
1883 fatal_error_backtrace (SIGABRT
, 10);
1888 emacs_open (const char *path
, int oflag
, int mode
)
1890 register int rtnval
;
1892 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1893 && (errno
== EINTR
))
1899 emacs_close (int fd
)
1902 register int rtnval
;
1904 while ((rtnval
= close (fd
)) == -1
1905 && (errno
== EINTR
))
1908 /* If close is interrupted SunOS 4.1 may or may not have closed the
1909 file descriptor. If it did the second close will fail with
1910 errno = EBADF. That means we have succeeded. */
1911 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1917 /* Maximum number of bytes to read or write in a single system call.
1918 This works around a serious bug in Linux kernels before 2.6.16; see
1919 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1920 It's likely to work around similar bugs in other operating systems, so do it
1921 on all platforms. Round INT_MAX down to a page size, with the conservative
1922 assumption that page sizes are at most 2**18 bytes (any kernel with a
1923 page size larger than that shouldn't have the bug). */
1924 #ifndef MAX_RW_COUNT
1925 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1928 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1929 Return the number of bytes read, which might be less than NBYTE.
1930 On error, set errno and return -1. */
1932 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1934 register ssize_t rtnval
;
1936 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1937 passes a size that large to emacs_read. */
1939 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1940 && (errno
== EINTR
))
1945 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1946 or if a partial write occurs. Return the number of bytes written, setting
1947 errno if this is less than NBYTE. */
1949 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1952 ptrdiff_t bytes_written
;
1958 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1965 /* I originally used `QUIT' but that might causes files to
1966 be truncated if you hit C-g in the middle of it. --Stef */
1967 process_pending_signals ();
1977 bytes_written
+= rtnval
;
1980 return (bytes_written
);
1983 static struct allocator
const emacs_norealloc_allocator
=
1984 { xmalloc
, NULL
, xfree
, memory_full
};
1986 /* Get the symbolic link value of FILENAME. Return a pointer to a
1987 NUL-terminated string. If readlink fails, return NULL and set
1988 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1989 Otherwise, allocate memory and return a pointer to that memory. If
1990 memory allocation fails, diagnose and fail without returning. If
1991 successful, store the length of the symbolic link into *LINKLEN. */
1993 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1995 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1996 &emacs_norealloc_allocator
, careadlinkatcwd
);
2001 * All of the following are for USG.
2003 * On USG systems the system calls are INTERRUPTIBLE by signals
2004 * that the user program has elected to catch. Thus the system call
2005 * must be retried in these cases. To handle this without massive
2006 * changes in the source code, we remap the standard system call names
2007 * to names for our own functions in sysdep.c that do the system call
2008 * with retries. Actually, for portability reasons, it is good
2009 * programming practice, as this example shows, to limit all actual
2010 * system calls to a single occurrence in the source. Sure, this
2011 * adds an extra level of function call overhead but it is almost
2012 * always negligible. Fred Fish, Unisoft Systems Inc.
2016 * Warning, this function may not duplicate 4.2 action properly
2017 * under error conditions.
2020 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
2023 /* In 4.1, param.h fails to define this. */
2024 #define MAXPATHLEN 1024
2028 getwd (char *pathname
)
2030 char *npath
, *spath
;
2031 extern char *getcwd (char *, size_t);
2033 BLOCK_INPUT
; /* getcwd uses malloc */
2034 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2040 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2041 up to first slash. Should be harmless on other systems. */
2042 while (*npath
&& *npath
!= '/')
2044 strcpy (pathname
, npath
);
2045 free (spath
); /* getcwd uses malloc */
2050 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2053 * This function will go away as soon as all the stubs fixed. (fnf)
2057 croak (char *badfunc
)
2059 printf ("%s not yet implemented\r\n", badfunc
);
2060 reset_all_sys_modes ();
2066 /* Directory routines for systems that don't have them. */
2068 #ifdef HAVE_DIRENT_H
2072 #if !defined (HAVE_CLOSEDIR)
2075 closedir (DIR *dirp
/* stream from opendir */)
2079 rtnval
= emacs_close (dirp
->dd_fd
);
2084 #endif /* not HAVE_CLOSEDIR */
2085 #endif /* HAVE_DIRENT_H */
2088 /* Return a struct timeval that is roughly equivalent to T.
2089 Use the least timeval not less than T.
2090 Return an extremal value if the result would overflow. */
2092 make_timeval (EMACS_TIME t
)
2095 tv
.tv_sec
= t
.tv_sec
;
2096 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2098 if (t
.tv_nsec
% 1000 != 0)
2100 if (tv
.tv_usec
< 999999)
2102 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2112 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2113 ATIME and MTIME, respectively.
2114 FD must be either negative -- in which case it is ignored --
2115 or a file descriptor that is open on FILE.
2116 If FD is nonnegative, then FILE can be NULL. */
2118 set_file_times (int fd
, const char *filename
,
2119 EMACS_TIME atime
, EMACS_TIME mtime
)
2121 struct timespec timespec
[2];
2122 timespec
[0] = atime
;
2123 timespec
[1] = mtime
;
2124 return fdutimens (fd
, filename
, timespec
);
2127 #ifndef HAVE_STRSIGNAL
2129 strsignal (int code
)
2133 if (0 <= code
&& code
< NSIG
)
2135 /* Cast to suppress warning if the table has const char *. */
2136 signame
= (char *) sys_siglist
[code
];
2141 #endif /* HAVE_STRSIGNAL */
2144 /* For make-serial-process */
2146 serial_open (char *port
)
2150 fd
= emacs_open ((char*) port
,
2163 error ("Could not open %s: %s",
2164 port
, emacs_strerror (errno
));
2167 ioctl (fd
, TIOCEXCL
, (char *) 0);
2173 #if !defined (HAVE_CFMAKERAW)
2174 /* Workaround for targets which are missing cfmakeraw. */
2175 /* Pasted from man page. */
2177 cfmakeraw (struct termios
*termios_p
)
2179 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2180 termios_p
->c_oflag
&= ~OPOST
;
2181 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2182 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2183 termios_p
->c_cflag
|= CS8
;
2185 #endif /* !defined (HAVE_CFMAKERAW */
2187 #if !defined (HAVE_CFSETSPEED)
2188 /* Workaround for targets which are missing cfsetspeed. */
2190 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2192 return (cfsetispeed (termios_p
, vitesse
)
2193 + cfsetospeed (termios_p
, vitesse
));
2197 /* For serial-process-configure */
2199 serial_configure (struct Lisp_Process
*p
,
2200 Lisp_Object contact
)
2202 Lisp_Object childp2
= Qnil
;
2203 Lisp_Object tem
= Qnil
;
2204 struct termios attr
;
2206 char summary
[4] = "???"; /* This usually becomes "8N1". */
2208 childp2
= Fcopy_sequence (p
->childp
);
2210 /* Read port attributes and prepare default configuration. */
2211 err
= tcgetattr (p
->outfd
, &attr
);
2213 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2215 #if defined (CLOCAL)
2216 attr
.c_cflag
|= CLOCAL
;
2219 attr
.c_cflag
|= CREAD
;
2222 /* Configure speed. */
2223 if (!NILP (Fplist_member (contact
, QCspeed
)))
2224 tem
= Fplist_get (contact
, QCspeed
);
2226 tem
= Fplist_get (p
->childp
, QCspeed
);
2228 err
= cfsetspeed (&attr
, XINT (tem
));
2230 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2231 emacs_strerror (errno
));
2232 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2234 /* Configure bytesize. */
2235 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2236 tem
= Fplist_get (contact
, QCbytesize
);
2238 tem
= Fplist_get (p
->childp
, QCbytesize
);
2240 tem
= make_number (8);
2242 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2243 error (":bytesize must be nil (8), 7, or 8");
2244 summary
[0] = XINT (tem
) + '0';
2245 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2246 attr
.c_cflag
&= ~CSIZE
;
2247 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2249 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2250 if (XINT (tem
) != 8)
2251 error ("Bytesize cannot be changed");
2253 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2255 /* Configure parity. */
2256 if (!NILP (Fplist_member (contact
, QCparity
)))
2257 tem
= Fplist_get (contact
, QCparity
);
2259 tem
= Fplist_get (p
->childp
, QCparity
);
2260 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2261 error (":parity must be nil (no parity), `even', or `odd'");
2262 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2263 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2264 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2269 else if (EQ (tem
, Qeven
))
2272 attr
.c_cflag
|= PARENB
;
2273 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2275 else if (EQ (tem
, Qodd
))
2278 attr
.c_cflag
|= (PARENB
| PARODD
);
2279 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2282 /* Don't error on no parity, which should be set by cfmakeraw. */
2284 error ("Parity cannot be configured");
2286 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2288 /* Configure stopbits. */
2289 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2290 tem
= Fplist_get (contact
, QCstopbits
);
2292 tem
= Fplist_get (p
->childp
, QCstopbits
);
2294 tem
= make_number (1);
2296 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2297 error (":stopbits must be nil (1 stopbit), 1, or 2");
2298 summary
[2] = XINT (tem
) + '0';
2299 #if defined (CSTOPB)
2300 attr
.c_cflag
&= ~CSTOPB
;
2301 if (XINT (tem
) == 2)
2302 attr
.c_cflag
|= CSTOPB
;
2304 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2305 if (XINT (tem
) != 1)
2306 error ("Stopbits cannot be configured");
2308 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2310 /* Configure flowcontrol. */
2311 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2312 tem
= Fplist_get (contact
, QCflowcontrol
);
2314 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2315 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2316 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2317 #if defined (CRTSCTS)
2318 attr
.c_cflag
&= ~CRTSCTS
;
2320 #if defined (CNEW_RTSCTS)
2321 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2323 #if defined (IXON) && defined (IXOFF)
2324 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2328 /* Already configured. */
2330 else if (EQ (tem
, Qhw
))
2332 #if defined (CRTSCTS)
2333 attr
.c_cflag
|= CRTSCTS
;
2334 #elif defined (CNEW_RTSCTS)
2335 attr
.c_cflag
|= CNEW_RTSCTS
;
2337 error ("Hardware flowcontrol (RTS/CTS) not supported");
2340 else if (EQ (tem
, Qsw
))
2342 #if defined (IXON) && defined (IXOFF)
2343 attr
.c_iflag
|= (IXON
| IXOFF
);
2345 error ("Software flowcontrol (XON/XOFF) not supported");
2348 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2350 /* Activate configuration. */
2351 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2353 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2355 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2356 pset_childp (p
, childp2
);
2358 #endif /* not DOS_NT */
2360 /* System depended enumeration of and access to system processes a-la ps(1). */
2364 /* Process enumeration and access via /proc. */
2367 list_system_processes (void)
2369 Lisp_Object procdir
, match
, proclist
, next
;
2370 struct gcpro gcpro1
, gcpro2
;
2371 register Lisp_Object tail
;
2373 GCPRO2 (procdir
, match
);
2374 /* For every process on the system, there's a directory in the
2375 "/proc" pseudo-directory whose name is the numeric ID of that
2377 procdir
= build_string ("/proc");
2378 match
= build_string ("[0-9]+");
2379 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2381 /* `proclist' gives process IDs as strings. Destructively convert
2382 each string into a number. */
2383 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2386 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2390 /* directory_files_internal returns the files in reverse order; undo
2392 proclist
= Fnreverse (proclist
);
2396 #elif defined BSD_SYSTEM
2399 list_system_processes (void)
2401 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2402 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2404 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2407 struct kinfo_proc
*procs
;
2410 struct gcpro gcpro1
;
2411 Lisp_Object proclist
= Qnil
;
2413 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2416 procs
= xmalloc (len
);
2417 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2424 len
/= sizeof (struct kinfo_proc
);
2425 for (i
= 0; i
< len
; i
++)
2427 #if defined DARWIN_OS || defined __NetBSD__
2428 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2429 #elif defined __OpenBSD__
2430 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2432 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2442 /* The WINDOWSNT implementation is in w32.c.
2443 The MSDOS implementation is in dosfns.c. */
2444 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2447 list_system_processes (void)
2452 #endif /* !defined (WINDOWSNT) */
2456 time_from_jiffies (unsigned long long tval
, long hz
)
2458 unsigned long long s
= tval
/ hz
;
2459 unsigned long long frac
= tval
% hz
;
2462 if (TYPE_MAXIMUM (time_t) < s
)
2464 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2465 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2466 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2469 /* This is reachable only in the unlikely case that HZ * HZ
2470 exceeds ULLONG_MAX. It calculates an approximation that is
2471 guaranteed to be in range. */
2472 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2473 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2474 ns
= frac
/ hz_per_ns
;
2477 return make_emacs_time (s
, ns
);
2481 ltime_from_jiffies (unsigned long long tval
, long hz
)
2483 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2484 return make_lisp_time (t
);
2491 EMACS_TIME up
= make_emacs_time (0, 0);
2494 fup
= fopen ("/proc/uptime", "r");
2498 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2499 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2501 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2502 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2503 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2506 if (TYPE_MAXIMUM (time_t) < upsec
)
2508 upsec
= TYPE_MAXIMUM (time_t);
2509 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2513 int upfraclen
= upfrac_end
- upfrac_start
;
2514 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2516 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2518 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2520 up
= make_emacs_time (upsec
, upfrac
);
2529 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2530 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2533 procfs_ttyname (int rdev
)
2536 char name
[PATH_MAX
];
2539 fdev
= fopen ("/proc/tty/drivers", "r");
2544 unsigned long minor_beg
, minor_end
;
2545 char minor
[25]; /* 2 32-bit numbers + dash */
2548 while (!feof (fdev
) && !ferror (fdev
))
2550 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2551 && major
== MAJOR (rdev
))
2553 minor_beg
= strtoul (minor
, &endp
, 0);
2555 minor_end
= minor_beg
;
2556 else if (*endp
== '-')
2557 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2561 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2563 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2571 return build_string (name
);
2574 static unsigned long
2575 procfs_get_total_memory (void)
2578 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2581 fmem
= fopen ("/proc/meminfo", "r");
2585 unsigned long entry_value
;
2586 char entry_name
[20]; /* the longest I saw is 13+1 */
2588 while (!feof (fmem
) && !ferror (fmem
))
2590 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2591 && strcmp (entry_name
, "MemTotal:") == 0)
2593 retval
= entry_value
;
2604 system_process_attributes (Lisp_Object pid
)
2606 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2610 long clocks_per_sec
;
2612 char procbuf
[1025], *p
, *q
;
2615 static char const default_cmd
[] = "???";
2616 const char *cmd
= default_cmd
;
2617 int cmdsize
= sizeof default_cmd
- 1;
2618 char *cmdline
= NULL
;
2619 ptrdiff_t cmdline_size
;
2622 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2625 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2626 long priority
, niceness
, rss
;
2627 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2628 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2630 Lisp_Object attrs
= Qnil
;
2631 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2632 struct gcpro gcpro1
, gcpro2
;
2634 CHECK_NUMBER_OR_FLOAT (pid
);
2635 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2636 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2637 if (stat (procfn
, &st
) < 0)
2640 GCPRO2 (attrs
, decoded_cmd
);
2644 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2646 pw
= getpwuid (uid
);
2649 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2652 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2654 gr
= getgrgid (gid
);
2657 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2659 strcpy (fn
, procfn
);
2660 procfn_end
= fn
+ strlen (fn
);
2661 strcpy (procfn_end
, "/stat");
2662 fd
= emacs_open (fn
, O_RDONLY
, 0);
2663 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2665 procbuf
[nread
] = '\0';
2668 p
= strchr (p
, '(');
2671 q
= strrchr (p
+ 1, ')');
2681 /* Command name is encoded in locale-coding-system; decode it. */
2682 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2683 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2684 Vlocale_coding_system
, 0);
2685 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2689 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2691 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2692 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2693 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2694 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2695 &u_time
, &s_time
, &cutime
, &cstime
,
2696 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2701 state_str
[1] = '\0';
2702 tem
= build_string (state_str
);
2703 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2705 /* Stops GCC whining about limited range of data type. */
2710 thcount_eint
= thcount
;
2711 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2712 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2713 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2714 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2715 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2716 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2717 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2718 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2719 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2720 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2721 if (clocks_per_sec
< 0)
2722 clocks_per_sec
= 100;
2723 attrs
= Fcons (Fcons (Qutime
,
2724 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2726 attrs
= Fcons (Fcons (Qstime
,
2727 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2729 attrs
= Fcons (Fcons (Qtime
,
2730 ltime_from_jiffies (s_time
+ u_time
,
2733 attrs
= Fcons (Fcons (Qcutime
,
2734 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2736 attrs
= Fcons (Fcons (Qcstime
,
2737 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2739 attrs
= Fcons (Fcons (Qctime
,
2740 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2742 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2743 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2744 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2745 tnow
= current_emacs_time ();
2746 telapsed
= get_up_time ();
2747 tboot
= sub_emacs_time (tnow
, telapsed
);
2748 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2749 tstart
= add_emacs_time (tboot
, tstart
);
2750 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2751 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2752 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2753 telapsed
= sub_emacs_time (tnow
, tstart
);
2754 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2755 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2756 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2757 / EMACS_TIME_TO_DOUBLE (telapsed
));
2760 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2761 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2764 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2771 strcpy (procfn_end
, "/cmdline");
2772 fd
= emacs_open (fn
, O_RDONLY
, 0);
2776 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2778 if (emacs_read (fd
, &ch
, 1) != 1)
2781 if (c_isspace (c
) || c
== '\\')
2782 cmdline_size
++; /* for later quoting, see below */
2786 cmdline
= xmalloc (cmdline_size
+ 1);
2787 lseek (fd
, 0L, SEEK_SET
);
2789 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2790 cmdline
[nread
++] = '\0';
2793 /* Assigning zero to `nread' makes us skip the following
2794 two loops, assign zero to cmdline_size, and enter the
2795 following `if' clause that handles unknown command
2799 /* We don't want trailing null characters. */
2800 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2802 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2804 /* Escape-quote whitespace and backslashes. */
2805 if (c_isspace (*p
) || *p
== '\\')
2807 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2811 else if (*p
== '\0')
2814 cmdline_size
= nread
;
2818 cmdline_size
= cmdsize
+ 2;
2819 cmdline
= xmalloc (cmdline_size
+ 1);
2820 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2823 /* Command line is encoded in locale-coding-system; decode it. */
2824 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2825 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2826 Vlocale_coding_system
, 0);
2828 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2835 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2837 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2838 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2839 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2840 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2841 #undef _FILE_OFFSET_BITS
2843 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2848 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2849 #define _FILE_OFFSET_BITS 64
2850 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2852 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2855 system_process_attributes (Lisp_Object pid
)
2857 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2862 struct psinfo pinfo
;
2868 Lisp_Object attrs
= Qnil
;
2869 Lisp_Object decoded_cmd
, tem
;
2870 struct gcpro gcpro1
, gcpro2
;
2872 CHECK_NUMBER_OR_FLOAT (pid
);
2873 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2874 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2875 if (stat (procfn
, &st
) < 0)
2878 GCPRO2 (attrs
, decoded_cmd
);
2882 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2884 pw
= getpwuid (uid
);
2887 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2890 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2892 gr
= getgrgid (gid
);
2895 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2897 strcpy (fn
, procfn
);
2898 procfn_end
= fn
+ strlen (fn
);
2899 strcpy (procfn_end
, "/psinfo");
2900 fd
= emacs_open (fn
, O_RDONLY
, 0);
2902 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2904 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2905 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2906 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2910 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2911 state_str
[1] = '\0';
2912 tem
= build_string (state_str
);
2913 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2916 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2917 need to get a string from it. */
2919 /* FIXME: missing: Qtpgid */
2931 Are they available? */
2933 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
2934 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
2935 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
2936 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
2937 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
2939 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
2940 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
2941 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
2943 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2944 range 0 .. 2**15, representing 0.0 .. 1.0. */
2945 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
2946 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
2949 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
2950 strlen (pinfo
.pr_fname
)),
2951 Vlocale_coding_system
, 0);
2952 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2954 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
2955 strlen (pinfo
.pr_psargs
)),
2956 Vlocale_coding_system
, 0);
2957 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2967 #elif defined __FreeBSD__
2970 timeval_to_EMACS_TIME (struct timeval t
)
2972 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
2976 make_lisp_timeval (struct timeval t
)
2978 return make_lisp_time (timeval_to_EMACS_TIME (t
));
2982 system_process_attributes (Lisp_Object pid
)
2985 int pagesize
= getpagesize ();
2992 char args
[MAXPATHLEN
];
2995 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
2996 struct kinfo_proc proc
;
2997 size_t proclen
= sizeof proc
;
2999 struct gcpro gcpro1
, gcpro2
;
3000 Lisp_Object attrs
= Qnil
;
3001 Lisp_Object decoded_comm
;
3003 CHECK_NUMBER_OR_FLOAT (pid
);
3004 CONS_TO_INTEGER (pid
, int, proc_id
);
3007 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3010 GCPRO2 (attrs
, decoded_comm
);
3012 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3015 pw
= getpwuid (proc
.ki_uid
);
3018 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3020 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3023 gr
= getgrgid (proc
.ki_svgid
);
3026 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3028 decoded_comm
= code_convert_string_norecord
3029 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3030 Vlocale_coding_system
, 0);
3032 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3034 char state
[2] = {'\0', '\0'};
3035 switch (proc
.ki_stat
)
3057 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3060 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3061 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3062 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3065 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3068 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3070 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3071 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3072 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3073 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3074 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3076 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3078 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3080 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3081 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3082 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3084 attrs
= Fcons (Fcons (Qcutime
,
3085 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3087 attrs
= Fcons (Fcons (Qcstime
,
3088 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3090 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3091 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3092 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3094 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3096 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3097 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3098 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3099 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3100 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3103 now
= current_emacs_time ();
3104 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3105 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3107 len
= sizeof fscale
;
3108 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3113 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3115 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3116 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3117 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3121 len
= sizeof npages
;
3122 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3124 double pmem
= (proc
.ki_flag
& P_INMEM
3125 ? 100.0 * proc
.ki_rssize
/ npages
3127 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3130 mib
[2] = KERN_PROC_ARGS
;
3132 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3135 for (i
= 0; i
< len
; i
++)
3137 if (! args
[i
] && i
< len
- 1)
3142 (code_convert_string_norecord
3143 (build_unibyte_string (args
),
3144 Vlocale_coding_system
, 0));
3146 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3153 /* The WINDOWSNT implementation is in w32.c.
3154 The MSDOS implementation is in dosfns.c. */
3155 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3158 system_process_attributes (Lisp_Object pid
)
3163 #endif /* !defined (WINDOWSNT) */