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
30 #endif /* HAVE_PWD_H */
34 #include <allocator.h>
36 #include <careadlinkat.h>
37 #include <ignore-value.h>
41 #include "sysselect.h"
42 #include "blockinput.h"
45 #include <sys/param.h>
46 #include <sys/sysctl.h>
51 #include <sys/resource.h>
57 #define write sys_write
59 #endif /* not WINDOWSNT */
61 #include <sys/types.h>
65 /* Get SI_SRPC_DOMAIN, if it is available. */
66 #ifdef HAVE_SYS_SYSTEMINFO_H
67 #include <sys/systeminfo.h>
70 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
72 #include <sys/param.h>
81 #ifdef HAVE_SYS_UTSNAME_H
82 #include <sys/utsname.h>
84 #endif /* HAVE_SYS_UTSNAME_H */
89 #include "termhooks.h"
92 #include "dispextern.h"
94 #include "cm.h" /* for reset_sys_modes */
98 /* In process.h which conflicts with the local copy. */
100 int _cdecl
_spawnlp (int, const char *, const char *, ...);
101 int _cdecl
_getpid (void);
102 extern char *getwd (char *);
105 #include "syssignal.h"
108 static int emacs_get_tty (int, struct emacs_tty
*);
109 static int emacs_set_tty (int, struct emacs_tty
*, int);
111 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
113 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
116 /* Declare here, including term.h is problematic on some systems. */
117 extern void tputs (const char *, int, int (*)(int));
119 static const int baud_convert
[] =
121 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
122 1800, 2400, 4800, 9600, 19200, 38400
126 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
128 /* Return the current working directory. Returns NULL on errors.
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. */
132 get_current_dir_name (void)
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
147 && strlen (pwd
) < MAXPATHLEN
151 buf
= malloc (strlen (pwd
) + 1);
159 size_t buf_size
= 1024;
160 buf
= malloc (buf_size
);
165 if (getcwd (buf
, buf_size
) == buf
)
169 int tmp_errno
= errno
;
175 buf
= realloc (buf
, buf_size
);
183 /* We need MAXPATHLEN here. */
184 buf
= malloc (MAXPATHLEN
+ 1);
187 if (getwd (buf
) == NULL
)
189 int tmp_errno
= errno
;
201 /* Discard pending input on all input descriptors. */
204 discard_tty_input (void)
207 struct emacs_tty buf
;
212 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
213 while (dos_keyread () != -1)
215 #else /* not MSDOS */
217 struct tty_display_info
*tty
;
218 for (tty
= tty_list
; tty
; tty
= tty
->next
)
220 if (tty
->input
) /* Is the device suspended? */
222 emacs_get_tty (fileno (tty
->input
), &buf
);
223 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
227 #endif /* not MSDOS */
228 #endif /* not WINDOWSNT */
234 /* Arrange for character C to be read as the next input from
236 XXX What if we have multiple ttys?
242 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
245 /* Should perhaps error if in batch mode */
247 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
248 #else /* no TIOCSTI */
249 error ("Cannot stuff terminal input characters in this version of Unix");
250 #endif /* no TIOCSTI */
256 init_baud_rate (int fd
)
266 #else /* not DOS_NT */
271 emacs_ospeed
= cfgetospeed (&sg
);
272 #endif /* not DOS_NT */
275 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
276 ? baud_convert
[emacs_ospeed
] : 9600);
283 /* Set nonzero to make following function work under dbx
284 (at least for bsd). */
285 int wait_debugging EXTERNALLY_VISIBLE
;
290 wait_for_termination_1 (pid_t pid
, int interruptible
)
294 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
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 waitpid 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 sigset_t sigchild_mask
;
303 sigemptyset (&sigchild_mask
);
304 sigaddset (&sigchild_mask
, SIGCHLD
);
305 pthread_sigmask (SIG_SETMASK
, &sigchild_mask
, 0);
307 if (0 > kill (pid
, 0))
309 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
310 kill (getpid (), SIGCHLD
);
316 sigsuspend (&empty_mask
);
317 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
321 #else /* not WINDOWSNT */
323 sigemptyset (&blocked
);
324 sigaddset (&blocked
, SIGCHLD
);
325 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
327 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
329 pthread_sigmask (SIG_UNBLOCK
, &blocked
, 0);
333 sigsuspend (&empty_mask
);
334 #endif /* not WINDOWSNT */
335 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
341 /* Wait for subprocess with process id `pid' to terminate and
342 make sure it will get eliminated (not remain forever as a zombie) */
345 wait_for_termination (pid_t pid
)
347 wait_for_termination_1 (pid
, 0);
350 /* Like the above, but allow keyboard interruption. */
352 interruptible_wait_for_termination (pid_t pid
)
354 wait_for_termination_1 (pid
, 1);
358 * flush any pending output
359 * (may flush input as well; it does not matter the way we use it)
363 flush_pending_output (int channel
)
365 /* FIXME: maybe this function should be removed */
368 /* Set up the terminal at the other end of a pseudo-terminal that
369 we will be controlling an inferior through.
370 It should not echo or do line-editing, since that is done
371 in Emacs. No padding needed for insertion into an Emacs buffer. */
374 child_setup_tty (int out
)
379 emacs_get_tty (out
, &s
);
380 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
381 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
383 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
384 Some versions of GNU Hurd do not have FFDLY? */
386 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
387 /* No output delays */
389 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
390 /* No output delays */
393 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
394 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
396 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
399 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
402 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
404 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
405 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
406 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
407 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
410 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
413 #ifdef SIGNALS_VIA_CHARACTERS
414 /* the QUIT and INTR character are used in process_send_signal
415 so set them here to something useful. */
416 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
417 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
418 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
419 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
420 #endif /* not SIGNALS_VIA_CHARACTERS */
423 /* Also, PTY overloads NUL and BREAK.
424 don't ignore break, but don't signal either, so it looks like NUL. */
425 s
.main
.c_iflag
&= ~IGNBRK
;
426 s
.main
.c_iflag
&= ~BRKINT
;
427 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
428 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
429 would force it to 0377. That looks like duplicated code. */
430 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
433 /* We originally enabled ICANON (and set VEOF to 04), and then had
434 process.c send additional EOF chars to flush the output when faced
435 with long lines, but this leads to weird effects when the
436 subprocess has disabled ICANON and ends up seeing those spurious
437 extra EOFs. So we don't send EOFs any more in
438 process.c:send_process. First we tried to disable ICANON by
439 default, so if a subsprocess sets up ICANON, it's his problem (or
440 the Elisp package that talks to it) to deal with lines that are
441 too long. But this disables some features, such as the ability
442 to send EOF signals. So we re-enabled ICANON but there is no
443 more "send eof to flush" going on (which is wrong and unportable
444 in itself). The correct way to handle too much output is to
445 buffer what could not be written and then write it again when
446 select returns ok for writing. This has it own set of
447 problems. Write is now asynchronous, is that a problem? How much
448 do we buffer, and what do we do when that limit is reached? */
450 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
451 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
452 #if 0 /* These settings only apply to non-ICANON mode. */
453 s
.main
.c_cc
[VMIN
] = 1;
454 s
.main
.c_cc
[VTIME
] = 0;
457 emacs_set_tty (out
, &s
, 0);
458 #endif /* not WINDOWSNT */
460 #endif /* not MSDOS */
463 /* Record a signal code and the action for it. */
467 struct sigaction action
;
470 static void save_signal_handlers (struct save_signal
*);
471 static void restore_signal_handlers (struct save_signal
*);
473 /* Suspend the Emacs process; give terminal to its superior. */
478 #if defined (SIGTSTP) && !defined (MSDOS)
481 int pgrp
= EMACS_GETPGRP (0);
482 EMACS_KILLPG (pgrp
, SIGTSTP
);
485 #else /* No SIGTSTP */
486 /* On a system where suspending is not implemented,
487 instead fork a subshell and let it talk directly to the terminal
491 #endif /* no SIGTSTP */
494 /* Fork a subshell. */
499 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
501 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
504 struct save_signal saved_handlers
[5];
506 unsigned char *volatile str_volatile
= 0;
510 saved_handlers
[0].code
= SIGINT
;
511 saved_handlers
[1].code
= SIGQUIT
;
512 saved_handlers
[2].code
= SIGTERM
;
514 saved_handlers
[3].code
= SIGIO
;
515 saved_handlers
[4].code
= 0;
517 saved_handlers
[3].code
= 0;
520 /* Mentioning current_buffer->buffer would mean including buffer.h,
521 which somehow wedges the hp compiler. So instead... */
523 dir
= intern ("default-directory");
524 if (NILP (Fboundp (dir
)))
526 dir
= Fsymbol_value (dir
);
530 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
531 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
533 memcpy (str
, SDATA (dir
), len
);
534 if (str
[len
- 1] != '/') str
[len
++] = '/';
540 save_signal_handlers (saved_handlers
);
541 synch_process_alive
= 1;
545 error ("Can't spawn subshell");
552 #ifdef DOS_NT /* MW, Aug 1993 */
555 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
558 sh
= (char *) egetenv ("SHELL");
562 /* Use our buffer's default directory for the subshell. */
564 if (str
&& chdir ((char *) str
) != 0)
567 ignore_value (write (1, "Can't chdir\n", 12));
572 close_process_descs (); /* Close Emacs's pipes/ptys */
574 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
576 char *epwd
= getenv ("PWD");
577 char old_pwd
[MAXPATHLEN
+1+4];
579 /* If PWD is set, pass it with corrected value. */
582 strcpy (old_pwd
, epwd
);
583 if (str
[len
- 1] == '/')
585 setenv ("PWD", str
, 1);
588 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
590 putenv (old_pwd
); /* restore previous value */
592 #else /* not MSDOS */
594 /* Waits for process completion */
595 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
596 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
598 write (1, "Can't execute subshell", 22);
599 #else /* not WINDOWSNT */
600 execlp (sh
, sh
, (char *) 0);
601 ignore_value (write (1, "Can't execute subshell", 22));
603 #endif /* not WINDOWSNT */
604 #endif /* not MSDOS */
607 /* Do this now if we did not do it before. */
609 save_signal_handlers (saved_handlers
);
610 synch_process_alive
= 1;
614 wait_for_termination (pid
);
616 restore_signal_handlers (saved_handlers
);
617 synch_process_alive
= 0;
621 save_signal_handlers (struct save_signal
*saved_handlers
)
623 while (saved_handlers
->code
)
625 struct sigaction action
;
626 emacs_sigaction_init (&action
, SIG_IGN
);
627 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
633 restore_signal_handlers (struct save_signal
*saved_handlers
)
635 while (saved_handlers
->code
)
637 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
643 static int old_fcntl_flags
[MAXDESC
];
650 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
651 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
652 interrupts_deferred
= 0;
660 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
673 sigemptyset (&unblocked
);
675 sigaddset (&unblocked
, SIGWINCH
);
677 sigaddset (&unblocked
, SIGIO
);
678 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
680 interrupts_deferred
= 0;
685 unrequest_sigio (void)
693 sigemptyset (&blocked
);
695 sigaddset (&blocked
, SIGWINCH
);
697 sigaddset (&blocked
, SIGIO
);
698 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
699 interrupts_deferred
= 1;
707 signal (SIGIO
, SIG_IGN
);
712 /* Getting and setting emacs_tty structures. */
714 /* Set *TC to the parameters associated with the terminal FD.
715 Return zero if all's well, or -1 if we ran into an error we
716 couldn't deal with. */
718 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
720 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
722 /* We have those nifty POSIX tcmumbleattr functions. */
723 memset (&settings
->main
, 0, sizeof (settings
->main
));
724 if (tcgetattr (fd
, &settings
->main
) < 0)
728 /* We have survived the tempest. */
733 /* Set the parameters of the tty on FD according to the contents of
734 *SETTINGS. If FLUSHP is non-zero, we discard input.
735 Return 0 if all went well, and -1 if anything failed. */
738 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
740 /* Set the primary parameters - baud rate, character size, etcetera. */
743 /* We have those nifty POSIX tcmumbleattr functions.
744 William J. Smith <wjs@wiis.wang.com> writes:
745 "POSIX 1003.1 defines tcsetattr to return success if it was
746 able to perform any of the requested actions, even if some
747 of the requested actions could not be performed.
748 We must read settings back to ensure tty setup properly.
749 AIX requires this to keep tty from hanging occasionally." */
750 /* This make sure that we don't loop indefinitely in here. */
751 for (i
= 0 ; i
< 10 ; i
++)
752 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
763 memset (&new, 0, sizeof (new));
764 /* Get the current settings, and see if they're what we asked for. */
765 tcgetattr (fd
, &new);
766 /* We cannot use memcmp on the whole structure here because under
767 * aix386 the termios structure has some reserved field that may
770 if ( new.c_iflag
== settings
->main
.c_iflag
771 && new.c_oflag
== settings
->main
.c_oflag
772 && new.c_cflag
== settings
->main
.c_cflag
773 && new.c_lflag
== settings
->main
.c_lflag
774 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
781 /* We have survived the tempest. */
788 static int old_fcntl_owner
[MAXDESC
];
789 #endif /* F_SETOWN */
791 /* This may also be defined in stdio,
792 but if so, this does no harm,
793 and using the same name avoids wasting the other one's space. */
796 unsigned char _sobuf
[BUFSIZ
+8];
801 /* Initialize the terminal mode on all tty devices that are currently
805 init_all_sys_modes (void)
807 struct tty_display_info
*tty
;
808 for (tty
= tty_list
; tty
; tty
= tty
->next
)
809 init_sys_modes (tty
);
812 /* Initialize the terminal mode on the given tty device. */
815 init_sys_modes (struct tty_display_info
*tty_out
)
817 struct emacs_tty tty
;
818 Lisp_Object terminal
;
820 Vtty_erase_char
= Qnil
;
825 if (!tty_out
->output
)
826 return; /* The tty is suspended. */
828 if (! tty_out
->old_tty
)
829 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
831 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
833 tty
= *tty_out
->old_tty
;
835 #if !defined (DOS_NT)
836 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
838 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
839 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
840 #ifdef INLCR /* I'm just being cautious,
841 since I can't check how widespread INLCR is--rms. */
842 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
845 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
847 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
848 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
850 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
852 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
853 if (tty_out
->flow_control
)
855 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
857 tty
.main
.c_iflag
&= ~IXANY
;
861 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
862 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
864 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
866 if (tty_out
->meta_key
)
868 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
869 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
873 XSETTERMINAL(terminal
, tty_out
->terminal
);
874 if (!NILP (Fcontrolling_tty_p (terminal
)))
876 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
877 /* Set up C-g for both SIGQUIT and SIGINT.
878 We don't know which we will get, but we handle both alike
879 so which one it really gives us does not matter. */
880 tty
.main
.c_cc
[VQUIT
] = quit_char
;
884 /* We normally don't get interrupt or quit signals from tty
885 devices other than our controlling terminal; therefore,
886 we must handle C-g as normal input. Unfortunately, this
887 means that the interrupt and quit feature must be
888 disabled on secondary ttys, or we would not even see the
891 Note that even though emacsclient could have special code
892 to pass SIGINT to Emacs, we should _not_ enable
893 interrupt/quit keys for emacsclient frames. This means
894 that we can't break out of loops in C code from a
895 secondary tty frame, but we can always decide what
896 display the C-g came from, which is more important from a
897 usability point of view. (Consider the case when two
898 people work together using the same Emacs instance.) */
899 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
900 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
902 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
903 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
905 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
910 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
913 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
915 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
916 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
919 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
922 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
923 #endif /* VREPRINT */
925 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
928 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
929 #endif /* VDISCARD */
931 if (tty_out
->flow_control
)
934 tty
.main
.c_cc
[VSTART
] = '\021';
937 tty
.main
.c_cc
[VSTOP
] = '\023';
943 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
946 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
951 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
952 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
953 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
954 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
955 if (tty_out
->flow_control
)
958 tty
.main
.c_cc
[VSTART
] = '\021';
961 tty
.main
.c_cc
[VSTOP
] = '\023';
964 /* Also, PTY overloads NUL and BREAK.
965 don't ignore break, but don't signal either, so it looks like NUL.
966 This really serves a purpose only if running in an XTERM window
967 or via TELNET or the like, but does no harm elsewhere. */
968 tty
.main
.c_iflag
&= ~IGNBRK
;
969 tty
.main
.c_iflag
&= ~BRKINT
;
971 #endif /* not DOS_NT */
973 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
974 if (!tty_out
->term_initted
)
975 internal_terminal_init ();
979 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
981 /* This code added to insure that, if flow-control is not to be used,
982 we have an unlocked terminal at the start. */
985 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
988 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
991 #if !defined (DOS_NT)
993 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
998 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1001 old_fcntl_owner
[fileno (tty_out
->input
)] =
1002 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1003 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1004 init_sigio (fileno (tty_out
->input
));
1006 if (gpm_tty
== tty_out
)
1008 /* Arrange for mouse events to give us SIGIO signals. */
1009 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1010 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1011 init_sigio (gpm_fd
);
1013 #endif /* HAVE_GPM */
1015 #endif /* F_GETOWN */
1016 #endif /* F_SETFL */
1019 /* This symbol is defined on recent USG systems.
1020 Someone says without this call USG won't really buffer the file
1021 even with a call to setbuf. */
1022 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1024 setbuf (tty_out
->output
, (char *) _sobuf
);
1027 if (tty_out
->terminal
->set_terminal_modes_hook
)
1028 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1030 if (!tty_out
->term_initted
)
1032 Lisp_Object tail
, frame
;
1033 FOR_EACH_FRAME (tail
, frame
)
1035 /* XXX This needs to be revised. */
1036 if (FRAME_TERMCAP_P (XFRAME (frame
))
1037 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1038 init_frame_faces (XFRAME (frame
));
1042 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1044 /* We used to call "direct_output_forward_char(0)" here,
1045 but it's not clear why, since it may not do anything anyway. */
1049 Lisp_Object tail
, frame
;
1051 FOR_EACH_FRAME (tail
, frame
)
1053 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1054 || FRAME_MSDOS_P (XFRAME (frame
)))
1055 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1056 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1060 tty_out
->term_initted
= 1;
1063 /* Return nonzero if safe to use tabs in output.
1064 At the time this is called, init_sys_modes has not been done yet. */
1067 tabs_safe_p (int fd
)
1069 struct emacs_tty etty
;
1071 emacs_get_tty (fd
, &etty
);
1074 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1075 #else /* not TABDLY */
1077 #endif /* not TABDLY */
1083 /* Get terminal size from system.
1084 Store number of lines into *HEIGHTP and width into *WIDTHP.
1085 We store 0 if there's no valid information. */
1088 get_tty_size (int fd
, int *widthp
, int *heightp
)
1090 #if defined TIOCGWINSZ
1093 struct winsize size
;
1095 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1096 *widthp
= *heightp
= 0;
1099 *widthp
= size
.ws_col
;
1100 *heightp
= size
.ws_row
;
1103 #elif defined TIOCGSIZE
1105 /* SunOS - style. */
1106 struct ttysize size
;
1108 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1109 *widthp
= *heightp
= 0;
1112 *widthp
= size
.ts_cols
;
1113 *heightp
= size
.ts_lines
;
1116 #elif defined WINDOWSNT
1118 CONSOLE_SCREEN_BUFFER_INFO info
;
1119 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1121 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1122 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1125 *widthp
= *heightp
= 0;
1129 *widthp
= ScreenCols ();
1130 *heightp
= ScreenRows ();
1132 #else /* system doesn't know size */
1140 /* Set the logical window size associated with descriptor FD
1141 to HEIGHT and WIDTH. This is used mainly with ptys. */
1144 set_window_size (int fd
, int height
, int width
)
1149 struct winsize size
;
1150 size
.ws_row
= height
;
1151 size
.ws_col
= width
;
1153 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1154 return 0; /* error */
1161 /* SunOS - style. */
1162 struct ttysize size
;
1163 size
.ts_lines
= height
;
1164 size
.ts_cols
= width
;
1166 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1172 #endif /* not SunOS-style */
1173 #endif /* not BSD-style */
1178 /* Prepare all terminal devices for exiting Emacs. */
1181 reset_all_sys_modes (void)
1183 struct tty_display_info
*tty
;
1184 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1185 reset_sys_modes (tty
);
1188 /* Prepare the terminal for closing it; move the cursor to the
1189 bottom of the frame, turn off interrupt-driven I/O, etc. */
1192 reset_sys_modes (struct tty_display_info
*tty_out
)
1199 if (!tty_out
->term_initted
)
1202 if (!tty_out
->output
)
1203 return; /* The tty is suspended. */
1205 /* Go to and clear the last line of the terminal. */
1207 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1209 /* Code adapted from tty_clear_end_of_line. */
1210 if (tty_out
->TS_clr_line
)
1212 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1215 { /* have to do it the hard way */
1217 tty_turn_off_insert (tty_out
);
1219 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1221 fputc (' ', tty_out
->output
);
1225 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1226 fflush (tty_out
->output
);
1228 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1229 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1232 /* Avoid possible loss of output when changing terminal modes. */
1233 fsync (fileno (tty_out
->output
));
1237 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1238 if (interrupt_input
)
1240 reset_sigio (fileno (tty_out
->input
));
1241 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1242 old_fcntl_owner
[fileno (tty_out
->input
)]);
1244 #endif /* F_SETOWN */
1246 fcntl (fileno (tty_out
->input
), F_SETFL
,
1247 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1249 #endif /* F_SETFL */
1251 if (tty_out
->old_tty
)
1252 while (emacs_set_tty (fileno (tty_out
->input
),
1253 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1256 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1264 /* Set up the proper status flags for use of a pty. */
1269 /* I'm told that TOICREMOTE does not mean control chars
1270 "can't be sent" but rather that they don't have
1271 input-editing or signaling effects.
1272 That should be good, because we have other ways
1273 to do those things in Emacs.
1274 However, telnet mode seems not to work on 4.2.
1275 So TIOCREMOTE is turned off now. */
1277 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1278 will hang. In particular, the "timeout" feature (which
1279 causes a read to return if there is no data available)
1280 does this. Also it is known that telnet mode will hang
1281 in such a way that Emacs must be stopped (perhaps this
1282 is the same problem).
1284 If TIOCREMOTE is turned off, then there is a bug in
1285 hp-ux which sometimes loses data. Apparently the
1286 code which blocks the master process when the internal
1287 buffer fills up does not work. Other than this,
1288 though, everything else seems to work fine.
1290 Since the latter lossage is more benign, we may as well
1291 lose that way. -- cph */
1293 #if defined (UNIX98_PTYS)
1296 ioctl (fd
, FIONBIO
, &on
);
1301 #endif /* HAVE_PTYS */
1304 #include <sys/socket.h>
1306 #endif /* HAVE_SOCKETS */
1309 #ifndef HAVE_H_ERRNO
1312 #endif /* TRY_AGAIN */
1315 init_system_name (void)
1317 #ifndef HAVE_GETHOSTNAME
1320 Vsystem_name
= build_string (uts
.nodename
);
1321 #else /* HAVE_GETHOSTNAME */
1322 unsigned int hostname_size
= 256;
1323 char *hostname
= alloca (hostname_size
);
1325 /* Try to get the host name; if the buffer is too short, try
1326 again. Apparently, the only indication gethostname gives of
1327 whether the buffer was large enough is the presence or absence
1328 of a '\0' in the string. Eech. */
1331 gethostname (hostname
, hostname_size
- 1);
1332 hostname
[hostname_size
- 1] = '\0';
1334 /* Was the buffer large enough for the '\0'? */
1335 if (strlen (hostname
) < hostname_size
- 1)
1338 hostname_size
<<= 1;
1339 hostname
= alloca (hostname_size
);
1342 /* Turn the hostname into the official, fully-qualified hostname.
1343 Don't do this if we're going to dump; this can confuse system
1344 libraries on some machines and make the dumped emacs core dump. */
1347 #endif /* not CANNOT_DUMP */
1348 if (! strchr (hostname
, '.'))
1351 #ifdef HAVE_GETADDRINFO
1352 struct addrinfo
*res
;
1353 struct addrinfo hints
;
1356 memset (&hints
, 0, sizeof (hints
));
1357 hints
.ai_socktype
= SOCK_STREAM
;
1358 hints
.ai_flags
= AI_CANONNAME
;
1360 for (count
= 0;; count
++)
1362 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1363 || ret
!= EAI_AGAIN
)
1368 Fsleep_for (make_number (1), Qnil
);
1373 struct addrinfo
*it
= res
;
1376 char *fqdn
= it
->ai_canonname
;
1377 if (fqdn
&& strchr (fqdn
, '.')
1378 && strcmp (fqdn
, "localhost.localdomain") != 0)
1384 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1385 strcpy (hostname
, it
->ai_canonname
);
1389 #else /* !HAVE_GETADDRINFO */
1391 for (count
= 0;; count
++)
1397 hp
= gethostbyname (hostname
);
1399 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1406 Fsleep_for (make_number (1), Qnil
);
1411 char *fqdn
= (char *) hp
->h_name
;
1413 if (!strchr (fqdn
, '.'))
1415 /* We still don't have a fully qualified domain name.
1416 Try to find one in the list of alternate names */
1417 char **alias
= hp
->h_aliases
;
1419 && (!strchr (*alias
, '.')
1420 || !strcmp (*alias
, "localhost.localdomain")))
1427 #endif /* !HAVE_GETADDRINFO */
1429 #endif /* HAVE_SOCKETS */
1430 Vsystem_name
= build_string (hostname
);
1431 #endif /* HAVE_GETHOSTNAME */
1434 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1435 if (*p
== ' ' || *p
== '\t')
1440 sigset_t empty_mask
;
1442 /* Store into *ACTION a signal action suitable for Emacs, with handler
1445 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1447 sigemptyset (&action
->sa_mask
);
1448 action
->sa_handler
= handler
;
1449 action
->sa_flags
= 0;
1450 #if defined (SA_RESTART)
1451 /* Emacs mostly works better with restartable system services. If this
1452 flag exists, we probably want to turn it on here.
1453 However, on some systems (only hpux11 at present) this resets the
1454 timeout of `select' which means that `select' never finishes if
1455 it keeps getting signals.
1456 We define BROKEN_SA_RESTART on those systems. */
1457 /* It's not clear why the comment above says "mostly works better". --Stef
1458 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1459 for pending input so we need long-running syscalls to be interrupted
1460 after a signal that sets the interrupt_input_pending flag. */
1461 /* Non-interactive keyboard input goes through stdio, where we always
1462 want restartable system calls. */
1463 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1466 action
->sa_flags
= SA_RESTART
;
1470 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1471 pthread_t main_thread
;
1474 /* If we are on the main thread, handle the signal SIG with HANDLER.
1475 Otherwise, redirect the signal to the main thread, blocking it from
1476 this thread. POSIX says any thread can receive a signal that is
1477 associated with a process, process group, or asynchronous event.
1478 On GNU/Linux that is not true, but for other systems (FreeBSD at
1481 handle_on_main_thread (int sig
, signal_handler_t handler
)
1483 /* Preserve errno, to avoid race conditions with signal handlers that
1484 might change errno. Races can occur even in single-threaded hosts. */
1485 int old_errno
= errno
;
1487 bool on_main_thread
= true;
1488 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1489 if (! pthread_equal (pthread_self (), main_thread
))
1492 sigemptyset (&blocked
);
1493 sigaddset (&blocked
, sig
);
1494 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1495 pthread_kill (main_thread
, sig
);
1496 on_main_thread
= false;
1505 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1506 static char *my_sys_siglist
[NSIG
];
1510 # define sys_siglist my_sys_siglist
1516 sigemptyset (&empty_mask
);
1518 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1519 main_thread
= pthread_self ();
1522 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1526 sys_siglist
[SIGABRT
] = "Aborted";
1529 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1532 sys_siglist
[SIGALRM
] = "Alarm clock";
1535 sys_siglist
[SIGBUS
] = "Bus error";
1538 sys_siglist
[SIGCLD
] = "Child status changed";
1541 sys_siglist
[SIGCHLD
] = "Child status changed";
1544 sys_siglist
[SIGCONT
] = "Continued";
1547 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1550 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1553 sys_siglist
[SIGEMT
] = "Emulation trap";
1556 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1559 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1562 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1565 sys_siglist
[SIGHUP
] = "Hangup";
1568 sys_siglist
[SIGILL
] = "Illegal instruction";
1571 sys_siglist
[SIGINT
] = "Interrupt";
1574 sys_siglist
[SIGIO
] = "I/O possible";
1577 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1580 sys_siglist
[SIGIOT
] = "IOT trap";
1583 sys_siglist
[SIGKILL
] = "Killed";
1586 sys_siglist
[SIGLOST
] = "Resource lost";
1589 sys_siglist
[SIGLWP
] = "SIGLWP";
1592 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1595 sys_siglist
[SIGWIND
] = "SIGPHONE";
1598 sys_siglist
[SIGPIPE
] = "Broken pipe";
1601 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1604 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1607 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1610 sys_siglist
[SIGPWR
] = "Power-fail restart";
1613 sys_siglist
[SIGQUIT
] = "Quit";
1616 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1619 sys_siglist
[SIGSAK
] = "Secure attention";
1622 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1625 sys_siglist
[SIGSOUND
] = "Sound completed";
1628 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1631 sys_siglist
[SIGSTP
] = "Stopped (user)";
1634 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1637 sys_siglist
[SIGTERM
] = "Terminated";
1640 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1643 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1646 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1649 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1652 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1655 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1658 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1661 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1664 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1667 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1670 sys_siglist
[SIGWINCH
] = "Window size changed";
1673 sys_siglist
[SIGWIND
] = "SIGWIND";
1676 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1679 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1682 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1691 /* Figure out how many bits the system's random number generator uses.
1692 `random' and `lrand48' are assumed to return 31 usable bits.
1693 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1694 so we'll shift it and treat it like the 15-bit USG `rand'. */
1698 # define RAND_BITS 31
1699 # else /* !HAVE_RANDOM */
1700 # ifdef HAVE_LRAND48
1701 # define RAND_BITS 31
1702 # define random lrand48
1703 # else /* !HAVE_LRAND48 */
1704 # define RAND_BITS 15
1705 # if RAND_MAX == 32767
1706 # define random rand
1707 # else /* RAND_MAX != 32767 */
1708 # if RAND_MAX == 2147483647
1709 # define random() (rand () >> 16)
1710 # else /* RAND_MAX != 2147483647 */
1712 # define random rand
1714 # define random() (rand () >> 16)
1716 # endif /* RAND_MAX != 2147483647 */
1717 # endif /* RAND_MAX != 32767 */
1718 # endif /* !HAVE_LRAND48 */
1719 # endif /* !HAVE_RANDOM */
1720 #endif /* !RAND_BITS */
1723 seed_random (void *seed
, ptrdiff_t seed_size
)
1725 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1726 unsigned int arg
= 0;
1730 unsigned char *argp
= (unsigned char *) &arg
;
1731 unsigned char *seedp
= seed
;
1733 for (i
= 0; i
< seed_size
; i
++)
1734 argp
[i
% sizeof arg
] ^= seedp
[i
];
1738 # ifdef HAVE_LRAND48
1749 EMACS_TIME t
= current_emacs_time ();
1750 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
1751 seed_random (&v
, sizeof v
);
1755 * Return a nonnegative random integer out of whatever we've got.
1756 * It contains enough bits to make a random (signed) Emacs fixnum.
1757 * This suffices even for a 64-bit architecture with a 15-bit rand.
1764 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1765 val
= (random () ^ (val
<< RAND_BITS
)
1766 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1767 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1768 return val
& INTMASK
;
1771 #ifndef HAVE_SNPRINTF
1772 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1774 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1776 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1777 ptrdiff_t nbytes
= size
- 1;
1782 va_start (ap
, format
);
1783 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1787 if (nbytes
== size
- 1)
1789 /* Calculate the length of the string that would have been created
1790 had the buffer been large enough. */
1791 char stackbuf
[4000];
1793 ptrdiff_t bsize
= sizeof stackbuf
;
1794 va_start (ap
, format
);
1795 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1801 if (INT_MAX
< nbytes
)
1814 /* If a backtrace is available, output the top lines of it to stderr.
1815 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
1816 This function may be called from a signal handler, so it should
1817 not invoke async-unsafe functions like malloc. */
1819 emacs_backtrace (int backtrace_limit
)
1821 enum { BACKTRACE_LIMIT_MAX
= 500 };
1822 void *buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1823 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
1824 int npointers
= backtrace (buffer
, bounded_limit
+ 1);
1826 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
1827 backtrace_symbols_fd (buffer
, bounded_limit
, STDERR_FILENO
);
1828 if (bounded_limit
< npointers
)
1829 ignore_value (write (STDERR_FILENO
, "...\n", 4));
1833 /* Using emacs_abort lets GDB return from a breakpoint here. */
1837 fatal_error_backtrace (SIGABRT
, 10);
1842 emacs_open (const char *path
, int oflag
, int mode
)
1844 register int rtnval
;
1846 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1847 && (errno
== EINTR
))
1853 emacs_close (int fd
)
1856 register int rtnval
;
1858 while ((rtnval
= close (fd
)) == -1
1859 && (errno
== EINTR
))
1862 /* If close is interrupted SunOS 4.1 may or may not have closed the
1863 file descriptor. If it did the second close will fail with
1864 errno = EBADF. That means we have succeeded. */
1865 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1871 /* Maximum number of bytes to read or write in a single system call.
1872 This works around a serious bug in Linux kernels before 2.6.16; see
1873 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1874 It's likely to work around similar bugs in other operating systems, so do it
1875 on all platforms. Round INT_MAX down to a page size, with the conservative
1876 assumption that page sizes are at most 2**18 bytes (any kernel with a
1877 page size larger than that shouldn't have the bug). */
1878 #ifndef MAX_RW_COUNT
1879 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1882 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1883 Return the number of bytes read, which might be less than NBYTE.
1884 On error, set errno and return -1. */
1886 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1888 register ssize_t rtnval
;
1890 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1891 passes a size that large to emacs_read. */
1893 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1894 && (errno
== EINTR
))
1899 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1900 or if a partial write occurs. Return the number of bytes written, setting
1901 errno if this is less than NBYTE. */
1903 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1906 ptrdiff_t bytes_written
;
1912 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1919 /* I originally used `QUIT' but that might causes files to
1920 be truncated if you hit C-g in the middle of it. --Stef */
1921 process_pending_signals ();
1931 bytes_written
+= rtnval
;
1934 return (bytes_written
);
1937 static struct allocator
const emacs_norealloc_allocator
=
1938 { xmalloc
, NULL
, xfree
, memory_full
};
1940 /* Get the symbolic link value of FILENAME. Return a pointer to a
1941 NUL-terminated string. If readlink fails, return NULL and set
1942 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1943 Otherwise, allocate memory and return a pointer to that memory. If
1944 memory allocation fails, diagnose and fail without returning. If
1945 successful, store the length of the symbolic link into *LINKLEN. */
1947 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1949 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1950 &emacs_norealloc_allocator
, careadlinkatcwd
);
1955 * All of the following are for USG.
1957 * On USG systems the system calls are INTERRUPTIBLE by signals
1958 * that the user program has elected to catch. Thus the system call
1959 * must be retried in these cases. To handle this without massive
1960 * changes in the source code, we remap the standard system call names
1961 * to names for our own functions in sysdep.c that do the system call
1962 * with retries. Actually, for portability reasons, it is good
1963 * programming practice, as this example shows, to limit all actual
1964 * system calls to a single occurrence in the source. Sure, this
1965 * adds an extra level of function call overhead but it is almost
1966 * always negligible. Fred Fish, Unisoft Systems Inc.
1970 * Warning, this function may not duplicate 4.2 action properly
1971 * under error conditions.
1974 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
1977 /* In 4.1, param.h fails to define this. */
1978 #define MAXPATHLEN 1024
1982 getwd (char *pathname
)
1984 char *npath
, *spath
;
1985 extern char *getcwd (char *, size_t);
1987 BLOCK_INPUT
; /* getcwd uses malloc */
1988 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1994 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1995 up to first slash. Should be harmless on other systems. */
1996 while (*npath
&& *npath
!= '/')
1998 strcpy (pathname
, npath
);
1999 free (spath
); /* getcwd uses malloc */
2004 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2007 /* Directory routines for systems that don't have them. */
2009 #ifdef HAVE_DIRENT_H
2013 #if !defined (HAVE_CLOSEDIR)
2016 closedir (DIR *dirp
/* stream from opendir */)
2020 rtnval
= emacs_close (dirp
->dd_fd
);
2025 #endif /* not HAVE_CLOSEDIR */
2026 #endif /* HAVE_DIRENT_H */
2029 /* Return a struct timeval that is roughly equivalent to T.
2030 Use the least timeval not less than T.
2031 Return an extremal value if the result would overflow. */
2033 make_timeval (EMACS_TIME t
)
2036 tv
.tv_sec
= t
.tv_sec
;
2037 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2039 if (t
.tv_nsec
% 1000 != 0)
2041 if (tv
.tv_usec
< 999999)
2043 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2053 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2054 ATIME and MTIME, respectively.
2055 FD must be either negative -- in which case it is ignored --
2056 or a file descriptor that is open on FILE.
2057 If FD is nonnegative, then FILE can be NULL. */
2059 set_file_times (int fd
, const char *filename
,
2060 EMACS_TIME atime
, EMACS_TIME mtime
)
2062 struct timespec timespec
[2];
2063 timespec
[0] = atime
;
2064 timespec
[1] = mtime
;
2065 return fdutimens (fd
, filename
, timespec
);
2068 #ifndef HAVE_STRSIGNAL
2070 strsignal (int code
)
2074 if (0 <= code
&& code
< NSIG
)
2076 /* Cast to suppress warning if the table has const char *. */
2077 signame
= (char *) sys_siglist
[code
];
2082 #endif /* HAVE_STRSIGNAL */
2085 /* For make-serial-process */
2087 serial_open (char *port
)
2091 fd
= emacs_open ((char*) port
,
2104 error ("Could not open %s: %s",
2105 port
, emacs_strerror (errno
));
2108 ioctl (fd
, TIOCEXCL
, (char *) 0);
2114 #if !defined (HAVE_CFMAKERAW)
2115 /* Workaround for targets which are missing cfmakeraw. */
2116 /* Pasted from man page. */
2118 cfmakeraw (struct termios
*termios_p
)
2120 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2121 termios_p
->c_oflag
&= ~OPOST
;
2122 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2123 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2124 termios_p
->c_cflag
|= CS8
;
2126 #endif /* !defined (HAVE_CFMAKERAW */
2128 #if !defined (HAVE_CFSETSPEED)
2129 /* Workaround for targets which are missing cfsetspeed. */
2131 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2133 return (cfsetispeed (termios_p
, vitesse
)
2134 + cfsetospeed (termios_p
, vitesse
));
2138 /* For serial-process-configure */
2140 serial_configure (struct Lisp_Process
*p
,
2141 Lisp_Object contact
)
2143 Lisp_Object childp2
= Qnil
;
2144 Lisp_Object tem
= Qnil
;
2145 struct termios attr
;
2147 char summary
[4] = "???"; /* This usually becomes "8N1". */
2149 childp2
= Fcopy_sequence (p
->childp
);
2151 /* Read port attributes and prepare default configuration. */
2152 err
= tcgetattr (p
->outfd
, &attr
);
2154 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2156 #if defined (CLOCAL)
2157 attr
.c_cflag
|= CLOCAL
;
2160 attr
.c_cflag
|= CREAD
;
2163 /* Configure speed. */
2164 if (!NILP (Fplist_member (contact
, QCspeed
)))
2165 tem
= Fplist_get (contact
, QCspeed
);
2167 tem
= Fplist_get (p
->childp
, QCspeed
);
2169 err
= cfsetspeed (&attr
, XINT (tem
));
2171 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2172 emacs_strerror (errno
));
2173 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2175 /* Configure bytesize. */
2176 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2177 tem
= Fplist_get (contact
, QCbytesize
);
2179 tem
= Fplist_get (p
->childp
, QCbytesize
);
2181 tem
= make_number (8);
2183 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2184 error (":bytesize must be nil (8), 7, or 8");
2185 summary
[0] = XINT (tem
) + '0';
2186 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2187 attr
.c_cflag
&= ~CSIZE
;
2188 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2190 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2191 if (XINT (tem
) != 8)
2192 error ("Bytesize cannot be changed");
2194 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2196 /* Configure parity. */
2197 if (!NILP (Fplist_member (contact
, QCparity
)))
2198 tem
= Fplist_get (contact
, QCparity
);
2200 tem
= Fplist_get (p
->childp
, QCparity
);
2201 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2202 error (":parity must be nil (no parity), `even', or `odd'");
2203 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2204 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2205 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2210 else if (EQ (tem
, Qeven
))
2213 attr
.c_cflag
|= PARENB
;
2214 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2216 else if (EQ (tem
, Qodd
))
2219 attr
.c_cflag
|= (PARENB
| PARODD
);
2220 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2223 /* Don't error on no parity, which should be set by cfmakeraw. */
2225 error ("Parity cannot be configured");
2227 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2229 /* Configure stopbits. */
2230 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2231 tem
= Fplist_get (contact
, QCstopbits
);
2233 tem
= Fplist_get (p
->childp
, QCstopbits
);
2235 tem
= make_number (1);
2237 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2238 error (":stopbits must be nil (1 stopbit), 1, or 2");
2239 summary
[2] = XINT (tem
) + '0';
2240 #if defined (CSTOPB)
2241 attr
.c_cflag
&= ~CSTOPB
;
2242 if (XINT (tem
) == 2)
2243 attr
.c_cflag
|= CSTOPB
;
2245 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2246 if (XINT (tem
) != 1)
2247 error ("Stopbits cannot be configured");
2249 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2251 /* Configure flowcontrol. */
2252 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2253 tem
= Fplist_get (contact
, QCflowcontrol
);
2255 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2256 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2257 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2258 #if defined (CRTSCTS)
2259 attr
.c_cflag
&= ~CRTSCTS
;
2261 #if defined (CNEW_RTSCTS)
2262 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2264 #if defined (IXON) && defined (IXOFF)
2265 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2269 /* Already configured. */
2271 else if (EQ (tem
, Qhw
))
2273 #if defined (CRTSCTS)
2274 attr
.c_cflag
|= CRTSCTS
;
2275 #elif defined (CNEW_RTSCTS)
2276 attr
.c_cflag
|= CNEW_RTSCTS
;
2278 error ("Hardware flowcontrol (RTS/CTS) not supported");
2281 else if (EQ (tem
, Qsw
))
2283 #if defined (IXON) && defined (IXOFF)
2284 attr
.c_iflag
|= (IXON
| IXOFF
);
2286 error ("Software flowcontrol (XON/XOFF) not supported");
2289 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2291 /* Activate configuration. */
2292 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2294 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2296 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2297 pset_childp (p
, childp2
);
2299 #endif /* not DOS_NT */
2301 /* System depended enumeration of and access to system processes a-la ps(1). */
2305 /* Process enumeration and access via /proc. */
2308 list_system_processes (void)
2310 Lisp_Object procdir
, match
, proclist
, next
;
2311 struct gcpro gcpro1
, gcpro2
;
2312 register Lisp_Object tail
;
2314 GCPRO2 (procdir
, match
);
2315 /* For every process on the system, there's a directory in the
2316 "/proc" pseudo-directory whose name is the numeric ID of that
2318 procdir
= build_string ("/proc");
2319 match
= build_string ("[0-9]+");
2320 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2322 /* `proclist' gives process IDs as strings. Destructively convert
2323 each string into a number. */
2324 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2327 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2331 /* directory_files_internal returns the files in reverse order; undo
2333 proclist
= Fnreverse (proclist
);
2337 #elif defined BSD_SYSTEM
2340 list_system_processes (void)
2342 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2343 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2345 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2348 struct kinfo_proc
*procs
;
2351 struct gcpro gcpro1
;
2352 Lisp_Object proclist
= Qnil
;
2354 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2357 procs
= xmalloc (len
);
2358 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2365 len
/= sizeof (struct kinfo_proc
);
2366 for (i
= 0; i
< len
; i
++)
2368 #if defined DARWIN_OS || defined __NetBSD__
2369 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2370 #elif defined __OpenBSD__
2371 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2373 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2383 /* The WINDOWSNT implementation is in w32.c.
2384 The MSDOS implementation is in dosfns.c. */
2385 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2388 list_system_processes (void)
2393 #endif /* !defined (WINDOWSNT) */
2397 time_from_jiffies (unsigned long long tval
, long hz
)
2399 unsigned long long s
= tval
/ hz
;
2400 unsigned long long frac
= tval
% hz
;
2403 if (TYPE_MAXIMUM (time_t) < s
)
2405 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2406 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2407 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2410 /* This is reachable only in the unlikely case that HZ * HZ
2411 exceeds ULLONG_MAX. It calculates an approximation that is
2412 guaranteed to be in range. */
2413 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2414 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2415 ns
= frac
/ hz_per_ns
;
2418 return make_emacs_time (s
, ns
);
2422 ltime_from_jiffies (unsigned long long tval
, long hz
)
2424 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2425 return make_lisp_time (t
);
2432 EMACS_TIME up
= make_emacs_time (0, 0);
2435 fup
= fopen ("/proc/uptime", "r");
2439 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2440 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2442 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2443 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2444 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2447 if (TYPE_MAXIMUM (time_t) < upsec
)
2449 upsec
= TYPE_MAXIMUM (time_t);
2450 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2454 int upfraclen
= upfrac_end
- upfrac_start
;
2455 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2457 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2459 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2461 up
= make_emacs_time (upsec
, upfrac
);
2470 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2471 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2474 procfs_ttyname (int rdev
)
2477 char name
[PATH_MAX
];
2480 fdev
= fopen ("/proc/tty/drivers", "r");
2485 unsigned long minor_beg
, minor_end
;
2486 char minor
[25]; /* 2 32-bit numbers + dash */
2489 while (!feof (fdev
) && !ferror (fdev
))
2491 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2492 && major
== MAJOR (rdev
))
2494 minor_beg
= strtoul (minor
, &endp
, 0);
2496 minor_end
= minor_beg
;
2497 else if (*endp
== '-')
2498 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2502 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2504 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2512 return build_string (name
);
2515 static unsigned long
2516 procfs_get_total_memory (void)
2519 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2522 fmem
= fopen ("/proc/meminfo", "r");
2526 unsigned long entry_value
;
2527 char entry_name
[20]; /* the longest I saw is 13+1 */
2529 while (!feof (fmem
) && !ferror (fmem
))
2531 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2532 && strcmp (entry_name
, "MemTotal:") == 0)
2534 retval
= entry_value
;
2545 system_process_attributes (Lisp_Object pid
)
2547 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2551 long clocks_per_sec
;
2553 char procbuf
[1025], *p
, *q
;
2556 static char const default_cmd
[] = "???";
2557 const char *cmd
= default_cmd
;
2558 int cmdsize
= sizeof default_cmd
- 1;
2559 char *cmdline
= NULL
;
2560 ptrdiff_t cmdline_size
;
2563 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2566 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2567 long priority
, niceness
, rss
;
2568 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2569 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2571 Lisp_Object attrs
= Qnil
;
2572 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2573 struct gcpro gcpro1
, gcpro2
;
2575 CHECK_NUMBER_OR_FLOAT (pid
);
2576 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2577 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2578 if (stat (procfn
, &st
) < 0)
2581 GCPRO2 (attrs
, decoded_cmd
);
2585 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2587 pw
= getpwuid (uid
);
2590 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2593 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2595 gr
= getgrgid (gid
);
2598 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2600 strcpy (fn
, procfn
);
2601 procfn_end
= fn
+ strlen (fn
);
2602 strcpy (procfn_end
, "/stat");
2603 fd
= emacs_open (fn
, O_RDONLY
, 0);
2604 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2606 procbuf
[nread
] = '\0';
2609 p
= strchr (p
, '(');
2612 q
= strrchr (p
+ 1, ')');
2622 /* Command name is encoded in locale-coding-system; decode it. */
2623 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2624 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2625 Vlocale_coding_system
, 0);
2626 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2630 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2632 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2633 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2634 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2635 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2636 &u_time
, &s_time
, &cutime
, &cstime
,
2637 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2642 state_str
[1] = '\0';
2643 tem
= build_string (state_str
);
2644 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2646 /* Stops GCC whining about limited range of data type. */
2651 thcount_eint
= thcount
;
2652 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2653 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2654 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2655 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2656 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2657 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2658 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2659 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2660 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2661 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2662 if (clocks_per_sec
< 0)
2663 clocks_per_sec
= 100;
2664 attrs
= Fcons (Fcons (Qutime
,
2665 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2667 attrs
= Fcons (Fcons (Qstime
,
2668 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2670 attrs
= Fcons (Fcons (Qtime
,
2671 ltime_from_jiffies (s_time
+ u_time
,
2674 attrs
= Fcons (Fcons (Qcutime
,
2675 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2677 attrs
= Fcons (Fcons (Qcstime
,
2678 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2680 attrs
= Fcons (Fcons (Qctime
,
2681 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2683 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2684 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2685 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2686 tnow
= current_emacs_time ();
2687 telapsed
= get_up_time ();
2688 tboot
= sub_emacs_time (tnow
, telapsed
);
2689 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2690 tstart
= add_emacs_time (tboot
, tstart
);
2691 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2692 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2693 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2694 telapsed
= sub_emacs_time (tnow
, tstart
);
2695 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2696 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2697 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2698 / EMACS_TIME_TO_DOUBLE (telapsed
));
2701 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2702 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2705 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2712 strcpy (procfn_end
, "/cmdline");
2713 fd
= emacs_open (fn
, O_RDONLY
, 0);
2717 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2719 if (emacs_read (fd
, &ch
, 1) != 1)
2722 if (c_isspace (c
) || c
== '\\')
2723 cmdline_size
++; /* for later quoting, see below */
2727 cmdline
= xmalloc (cmdline_size
+ 1);
2728 lseek (fd
, 0L, SEEK_SET
);
2730 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2731 cmdline
[nread
++] = '\0';
2734 /* Assigning zero to `nread' makes us skip the following
2735 two loops, assign zero to cmdline_size, and enter the
2736 following `if' clause that handles unknown command
2740 /* We don't want trailing null characters. */
2741 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2743 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2745 /* Escape-quote whitespace and backslashes. */
2746 if (c_isspace (*p
) || *p
== '\\')
2748 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2752 else if (*p
== '\0')
2755 cmdline_size
= nread
;
2759 cmdline_size
= cmdsize
+ 2;
2760 cmdline
= xmalloc (cmdline_size
+ 1);
2761 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2764 /* Command line is encoded in locale-coding-system; decode it. */
2765 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2766 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2767 Vlocale_coding_system
, 0);
2769 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2776 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2778 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2779 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2780 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2781 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2782 #undef _FILE_OFFSET_BITS
2784 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2789 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2790 #define _FILE_OFFSET_BITS 64
2791 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2793 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2796 system_process_attributes (Lisp_Object pid
)
2798 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2803 struct psinfo pinfo
;
2809 Lisp_Object attrs
= Qnil
;
2810 Lisp_Object decoded_cmd
, tem
;
2811 struct gcpro gcpro1
, gcpro2
;
2813 CHECK_NUMBER_OR_FLOAT (pid
);
2814 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2815 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2816 if (stat (procfn
, &st
) < 0)
2819 GCPRO2 (attrs
, decoded_cmd
);
2823 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2825 pw
= getpwuid (uid
);
2828 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2831 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2833 gr
= getgrgid (gid
);
2836 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2838 strcpy (fn
, procfn
);
2839 procfn_end
= fn
+ strlen (fn
);
2840 strcpy (procfn_end
, "/psinfo");
2841 fd
= emacs_open (fn
, O_RDONLY
, 0);
2843 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2845 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2846 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2847 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2851 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2852 state_str
[1] = '\0';
2853 tem
= build_string (state_str
);
2854 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2857 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2858 need to get a string from it. */
2860 /* FIXME: missing: Qtpgid */
2872 Are they available? */
2874 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
2875 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
2876 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
2877 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
2878 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
2880 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
2881 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
2882 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
2884 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2885 range 0 .. 2**15, representing 0.0 .. 1.0. */
2886 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
2887 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
2890 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
2891 strlen (pinfo
.pr_fname
)),
2892 Vlocale_coding_system
, 0);
2893 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2895 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
2896 strlen (pinfo
.pr_psargs
)),
2897 Vlocale_coding_system
, 0);
2898 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2908 #elif defined __FreeBSD__
2911 timeval_to_EMACS_TIME (struct timeval t
)
2913 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
2917 make_lisp_timeval (struct timeval t
)
2919 return make_lisp_time (timeval_to_EMACS_TIME (t
));
2923 system_process_attributes (Lisp_Object pid
)
2926 int pagesize
= getpagesize ();
2933 char args
[MAXPATHLEN
];
2936 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
2937 struct kinfo_proc proc
;
2938 size_t proclen
= sizeof proc
;
2940 struct gcpro gcpro1
, gcpro2
;
2941 Lisp_Object attrs
= Qnil
;
2942 Lisp_Object decoded_comm
;
2944 CHECK_NUMBER_OR_FLOAT (pid
);
2945 CONS_TO_INTEGER (pid
, int, proc_id
);
2948 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
2951 GCPRO2 (attrs
, decoded_comm
);
2953 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
2956 pw
= getpwuid (proc
.ki_uid
);
2959 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2961 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
2964 gr
= getgrgid (proc
.ki_svgid
);
2967 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2969 decoded_comm
= code_convert_string_norecord
2970 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
2971 Vlocale_coding_system
, 0);
2973 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
2975 char state
[2] = {'\0', '\0'};
2976 switch (proc
.ki_stat
)
2998 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3001 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3002 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3003 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3006 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3009 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3011 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3012 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3013 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3014 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3015 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3017 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3019 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3021 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3022 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3023 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3025 attrs
= Fcons (Fcons (Qcutime
,
3026 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3028 attrs
= Fcons (Fcons (Qcstime
,
3029 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3031 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3032 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3033 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3035 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3037 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3038 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3039 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3040 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3041 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3044 now
= current_emacs_time ();
3045 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3046 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3048 len
= sizeof fscale
;
3049 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3054 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3056 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3057 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3058 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3062 len
= sizeof npages
;
3063 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3065 double pmem
= (proc
.ki_flag
& P_INMEM
3066 ? 100.0 * proc
.ki_rssize
/ npages
3068 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3071 mib
[2] = KERN_PROC_ARGS
;
3073 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3076 for (i
= 0; i
< len
; i
++)
3078 if (! args
[i
] && i
< len
- 1)
3083 (code_convert_string_norecord
3084 (build_unibyte_string (args
),
3085 Vlocale_coding_system
, 0));
3087 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3094 /* The WINDOWSNT implementation is in w32.c.
3095 The MSDOS implementation is in dosfns.c. */
3096 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3099 system_process_attributes (Lisp_Object pid
)
3104 #endif /* !defined (WINDOWSNT) */