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);
110 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
111 static _Noreturn
void croak (char *);
114 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
116 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
119 /* Declare here, including term.h is problematic on some systems. */
120 extern void tputs (const char *, int, int (*)(int));
122 static const int baud_convert
[] =
124 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
125 1800, 2400, 4800, 9600, 19200, 38400
129 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
131 /* Return the current working directory. Returns NULL on errors.
132 Any other returned value must be freed with free. This is used
133 only when get_current_dir_name is not defined on the system. */
135 get_current_dir_name (void)
139 struct stat dotstat
, pwdstat
;
140 /* If PWD is accurate, use it instead of calling getwd. PWD is
141 sometimes a nicer name, and using it may avoid a fatal error if a
142 parent directory is searchable but not readable. */
143 if ((pwd
= getenv ("PWD")) != 0
144 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
145 && stat (pwd
, &pwdstat
) == 0
146 && stat (".", &dotstat
) == 0
147 && dotstat
.st_ino
== pwdstat
.st_ino
148 && dotstat
.st_dev
== pwdstat
.st_dev
150 && strlen (pwd
) < MAXPATHLEN
154 buf
= malloc (strlen (pwd
) + 1);
162 size_t buf_size
= 1024;
163 buf
= malloc (buf_size
);
168 if (getcwd (buf
, buf_size
) == buf
)
172 int tmp_errno
= errno
;
178 buf
= realloc (buf
, buf_size
);
186 /* We need MAXPATHLEN here. */
187 buf
= malloc (MAXPATHLEN
+ 1);
190 if (getwd (buf
) == NULL
)
192 int tmp_errno
= errno
;
204 /* Discard pending input on all input descriptors. */
207 discard_tty_input (void)
210 struct emacs_tty buf
;
215 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
216 while (dos_keyread () != -1)
218 #else /* not MSDOS */
220 struct tty_display_info
*tty
;
221 for (tty
= tty_list
; tty
; tty
= tty
->next
)
223 if (tty
->input
) /* Is the device suspended? */
225 emacs_get_tty (fileno (tty
->input
), &buf
);
226 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
230 #endif /* not MSDOS */
231 #endif /* not WINDOWSNT */
237 /* Arrange for character C to be read as the next input from
239 XXX What if we have multiple ttys?
245 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
248 /* Should perhaps error if in batch mode */
250 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
251 #else /* no TIOCSTI */
252 error ("Cannot stuff terminal input characters in this version of Unix");
253 #endif /* no TIOCSTI */
259 init_baud_rate (int fd
)
269 #else /* not DOS_NT */
274 emacs_ospeed
= cfgetospeed (&sg
);
275 #endif /* not DOS_NT */
278 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
279 ? baud_convert
[emacs_ospeed
] : 9600);
286 /* Set nonzero to make following function work under dbx
287 (at least for bsd). */
288 int wait_debugging EXTERNALLY_VISIBLE
;
293 wait_for_termination_1 (pid_t pid
, int interruptible
)
297 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
298 /* Note that kill returns -1 even if the process is just a zombie now.
299 But inevitably a SIGCHLD interrupt should be generated
300 and child_sig will do waitpid and make the process go away. */
301 /* There is some indication that there is a bug involved with
302 termination of subprocesses, perhaps involving a kernel bug too,
303 but no idea what it is. Just as a hunch we signal SIGCHLD to see
304 if that causes the problem to go away or get worse. */
305 sigsetmask (sigmask (SIGCHLD
));
306 if (0 > kill (pid
, 0))
308 sigsetmask (SIGEMPTYMASK
);
309 kill (getpid (), SIGCHLD
);
315 sigpause (SIGEMPTYMASK
);
316 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
320 #else /* not WINDOWSNT */
321 sigblock (sigmask (SIGCHLD
));
323 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
325 sigunblock (sigmask (SIGCHLD
));
329 sigsuspend (&empty_mask
);
330 #endif /* not WINDOWSNT */
331 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
337 /* Wait for subprocess with process id `pid' to terminate and
338 make sure it will get eliminated (not remain forever as a zombie) */
341 wait_for_termination (pid_t pid
)
343 wait_for_termination_1 (pid
, 0);
346 /* Like the above, but allow keyboard interruption. */
348 interruptible_wait_for_termination (pid_t pid
)
350 wait_for_termination_1 (pid
, 1);
354 * flush any pending output
355 * (may flush input as well; it does not matter the way we use it)
359 flush_pending_output (int channel
)
361 /* FIXME: maybe this function should be removed */
364 /* Set up the terminal at the other end of a pseudo-terminal that
365 we will be controlling an inferior through.
366 It should not echo or do line-editing, since that is done
367 in Emacs. No padding needed for insertion into an Emacs buffer. */
370 child_setup_tty (int out
)
375 emacs_get_tty (out
, &s
);
376 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
377 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
379 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
380 Some versions of GNU Hurd do not have FFDLY? */
382 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
383 /* No output delays */
385 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
386 /* No output delays */
389 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
390 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
392 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
395 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
398 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
400 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
401 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
402 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
403 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
406 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
409 #ifdef SIGNALS_VIA_CHARACTERS
410 /* the QUIT and INTR character are used in process_send_signal
411 so set them here to something useful. */
412 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
413 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
414 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
415 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
416 #endif /* not SIGNALS_VIA_CHARACTERS */
419 /* Also, PTY overloads NUL and BREAK.
420 don't ignore break, but don't signal either, so it looks like NUL. */
421 s
.main
.c_iflag
&= ~IGNBRK
;
422 s
.main
.c_iflag
&= ~BRKINT
;
423 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
424 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
425 would force it to 0377. That looks like duplicated code. */
426 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
429 /* We originally enabled ICANON (and set VEOF to 04), and then had
430 process.c send additional EOF chars to flush the output when faced
431 with long lines, but this leads to weird effects when the
432 subprocess has disabled ICANON and ends up seeing those spurious
433 extra EOFs. So we don't send EOFs any more in
434 process.c:send_process. First we tried to disable ICANON by
435 default, so if a subsprocess sets up ICANON, it's his problem (or
436 the Elisp package that talks to it) to deal with lines that are
437 too long. But this disables some features, such as the ability
438 to send EOF signals. So we re-enabled ICANON but there is no
439 more "send eof to flush" going on (which is wrong and unportable
440 in itself). The correct way to handle too much output is to
441 buffer what could not be written and then write it again when
442 select returns ok for writing. This has it own set of
443 problems. Write is now asynchronous, is that a problem? How much
444 do we buffer, and what do we do when that limit is reached? */
446 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
447 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
448 #if 0 /* These settings only apply to non-ICANON mode. */
449 s
.main
.c_cc
[VMIN
] = 1;
450 s
.main
.c_cc
[VTIME
] = 0;
453 emacs_set_tty (out
, &s
, 0);
454 #endif /* not WINDOWSNT */
456 #endif /* not MSDOS */
459 /* Record a signal code and the handler for it. */
463 void (*handler
) (int);
466 static void save_signal_handlers (struct save_signal
*);
467 static void restore_signal_handlers (struct save_signal
*);
469 /* Suspend the Emacs process; give terminal to its superior. */
474 #if defined (SIGTSTP) && !defined (MSDOS)
477 int pgrp
= EMACS_GETPGRP (0);
478 EMACS_KILLPG (pgrp
, SIGTSTP
);
481 #else /* No SIGTSTP */
482 /* On a system where suspending is not implemented,
483 instead fork a subshell and let it talk directly to the terminal
487 #endif /* no SIGTSTP */
490 /* Fork a subshell. */
495 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
497 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
500 struct save_signal saved_handlers
[5];
502 unsigned char *volatile str_volatile
= 0;
506 saved_handlers
[0].code
= SIGINT
;
507 saved_handlers
[1].code
= SIGQUIT
;
508 saved_handlers
[2].code
= SIGTERM
;
510 saved_handlers
[3].code
= SIGIO
;
511 saved_handlers
[4].code
= 0;
513 saved_handlers
[3].code
= 0;
516 /* Mentioning current_buffer->buffer would mean including buffer.h,
517 which somehow wedges the hp compiler. So instead... */
519 dir
= intern ("default-directory");
520 if (NILP (Fboundp (dir
)))
522 dir
= Fsymbol_value (dir
);
526 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
527 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
529 memcpy (str
, SDATA (dir
), len
);
530 if (str
[len
- 1] != '/') str
[len
++] = '/';
536 save_signal_handlers (saved_handlers
);
537 synch_process_alive
= 1;
541 error ("Can't spawn subshell");
548 #ifdef DOS_NT /* MW, Aug 1993 */
551 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
554 sh
= (char *) egetenv ("SHELL");
558 /* Use our buffer's default directory for the subshell. */
560 if (str
&& chdir ((char *) str
) != 0)
563 ignore_value (write (1, "Can't chdir\n", 12));
568 close_process_descs (); /* Close Emacs's pipes/ptys */
570 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
572 char *epwd
= getenv ("PWD");
573 char old_pwd
[MAXPATHLEN
+1+4];
575 /* If PWD is set, pass it with corrected value. */
578 strcpy (old_pwd
, epwd
);
579 if (str
[len
- 1] == '/')
581 setenv ("PWD", str
, 1);
584 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
586 putenv (old_pwd
); /* restore previous value */
588 #else /* not MSDOS */
590 /* Waits for process completion */
591 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
592 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
594 write (1, "Can't execute subshell", 22);
595 #else /* not WINDOWSNT */
596 execlp (sh
, sh
, (char *) 0);
597 ignore_value (write (1, "Can't execute subshell", 22));
599 #endif /* not WINDOWSNT */
600 #endif /* not MSDOS */
603 /* Do this now if we did not do it before. */
605 save_signal_handlers (saved_handlers
);
606 synch_process_alive
= 1;
610 wait_for_termination (pid
);
612 restore_signal_handlers (saved_handlers
);
613 synch_process_alive
= 0;
617 save_signal_handlers (struct save_signal
*saved_handlers
)
619 while (saved_handlers
->code
)
621 saved_handlers
->handler
622 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
628 restore_signal_handlers (struct save_signal
*saved_handlers
)
630 while (saved_handlers
->code
)
632 signal (saved_handlers
->code
, saved_handlers
->handler
);
638 /* If SIGIO is broken, don't do anything. */
655 unrequest_sigio (void)
662 static int old_fcntl_flags
[MAXDESC
];
668 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
669 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
671 interrupts_deferred
= 0;
678 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
682 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
683 /* XXX Uhm, FASYNC is not used anymore here. */
684 /* XXX Yeah, but you need it for SIGIO, don't you? */
693 sigunblock (sigmask (SIGWINCH
));
695 sigunblock (sigmask (SIGIO
));
697 interrupts_deferred
= 0;
701 unrequest_sigio (void)
706 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
712 sigblock (sigmask (SIGWINCH
));
714 sigblock (sigmask (SIGIO
));
715 interrupts_deferred
= 1;
718 #else /* no FASYNC */
724 if (noninteractive
|| read_socket_hook
)
727 croak ("request_sigio");
731 unrequest_sigio (void)
733 if (noninteractive
|| read_socket_hook
)
736 croak ("unrequest_sigio");
745 /* Getting and setting emacs_tty structures. */
747 /* Set *TC to the parameters associated with the terminal FD.
748 Return zero if all's well, or -1 if we ran into an error we
749 couldn't deal with. */
751 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
753 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
755 /* We have those nifty POSIX tcmumbleattr functions. */
756 memset (&settings
->main
, 0, sizeof (settings
->main
));
757 if (tcgetattr (fd
, &settings
->main
) < 0)
761 /* We have survived the tempest. */
766 /* Set the parameters of the tty on FD according to the contents of
767 *SETTINGS. If FLUSHP is non-zero, we discard input.
768 Return 0 if all went well, and -1 if anything failed. */
771 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
773 /* Set the primary parameters - baud rate, character size, etcetera. */
776 /* We have those nifty POSIX tcmumbleattr functions.
777 William J. Smith <wjs@wiis.wang.com> writes:
778 "POSIX 1003.1 defines tcsetattr to return success if it was
779 able to perform any of the requested actions, even if some
780 of the requested actions could not be performed.
781 We must read settings back to ensure tty setup properly.
782 AIX requires this to keep tty from hanging occasionally." */
783 /* This make sure that we don't loop indefinitely in here. */
784 for (i
= 0 ; i
< 10 ; i
++)
785 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
796 memset (&new, 0, sizeof (new));
797 /* Get the current settings, and see if they're what we asked for. */
798 tcgetattr (fd
, &new);
799 /* We cannot use memcmp on the whole structure here because under
800 * aix386 the termios structure has some reserved field that may
803 if ( new.c_iflag
== settings
->main
.c_iflag
804 && new.c_oflag
== settings
->main
.c_oflag
805 && new.c_cflag
== settings
->main
.c_cflag
806 && new.c_lflag
== settings
->main
.c_lflag
807 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
814 /* We have survived the tempest. */
821 static int old_fcntl_owner
[MAXDESC
];
822 #endif /* F_SETOWN */
824 /* This may also be defined in stdio,
825 but if so, this does no harm,
826 and using the same name avoids wasting the other one's space. */
829 unsigned char _sobuf
[BUFSIZ
+8];
834 /* Initialize the terminal mode on all tty devices that are currently
838 init_all_sys_modes (void)
840 struct tty_display_info
*tty
;
841 for (tty
= tty_list
; tty
; tty
= tty
->next
)
842 init_sys_modes (tty
);
845 /* Initialize the terminal mode on the given tty device. */
848 init_sys_modes (struct tty_display_info
*tty_out
)
850 struct emacs_tty tty
;
851 Lisp_Object terminal
;
853 Vtty_erase_char
= Qnil
;
858 if (!tty_out
->output
)
859 return; /* The tty is suspended. */
861 if (! tty_out
->old_tty
)
862 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
864 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
866 tty
= *tty_out
->old_tty
;
868 #if !defined (DOS_NT)
869 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
871 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
872 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
873 #ifdef INLCR /* I'm just being cautious,
874 since I can't check how widespread INLCR is--rms. */
875 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
878 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
880 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
881 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
883 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
885 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
886 if (tty_out
->flow_control
)
888 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
890 tty
.main
.c_iflag
&= ~IXANY
;
894 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
895 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
897 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
899 if (tty_out
->meta_key
)
901 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
902 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
906 XSETTERMINAL(terminal
, tty_out
->terminal
);
907 if (!NILP (Fcontrolling_tty_p (terminal
)))
909 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
910 /* Set up C-g for both SIGQUIT and SIGINT.
911 We don't know which we will get, but we handle both alike
912 so which one it really gives us does not matter. */
913 tty
.main
.c_cc
[VQUIT
] = quit_char
;
917 /* We normally don't get interrupt or quit signals from tty
918 devices other than our controlling terminal; therefore,
919 we must handle C-g as normal input. Unfortunately, this
920 means that the interrupt and quit feature must be
921 disabled on secondary ttys, or we would not even see the
924 Note that even though emacsclient could have special code
925 to pass SIGINT to Emacs, we should _not_ enable
926 interrupt/quit keys for emacsclient frames. This means
927 that we can't break out of loops in C code from a
928 secondary tty frame, but we can always decide what
929 display the C-g came from, which is more important from a
930 usability point of view. (Consider the case when two
931 people work together using the same Emacs instance.) */
932 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
933 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
935 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
936 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
938 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
943 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
946 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
948 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
949 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
952 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
955 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
956 #endif /* VREPRINT */
958 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
961 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
962 #endif /* VDISCARD */
964 if (tty_out
->flow_control
)
967 tty
.main
.c_cc
[VSTART
] = '\021';
970 tty
.main
.c_cc
[VSTOP
] = '\023';
976 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
979 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
984 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
985 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
986 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
987 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
988 if (tty_out
->flow_control
)
991 tty
.main
.c_cc
[VSTART
] = '\021';
994 tty
.main
.c_cc
[VSTOP
] = '\023';
997 /* Also, PTY overloads NUL and BREAK.
998 don't ignore break, but don't signal either, so it looks like NUL.
999 This really serves a purpose only if running in an XTERM window
1000 or via TELNET or the like, but does no harm elsewhere. */
1001 tty
.main
.c_iflag
&= ~IGNBRK
;
1002 tty
.main
.c_iflag
&= ~BRKINT
;
1004 #endif /* not DOS_NT */
1006 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1007 if (!tty_out
->term_initted
)
1008 internal_terminal_init ();
1009 dos_ttraw (tty_out
);
1012 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1014 /* This code added to insure that, if flow-control is not to be used,
1015 we have an unlocked terminal at the start. */
1018 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1021 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1024 #if !defined (DOS_NT)
1026 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1031 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1032 if (interrupt_input
)
1034 old_fcntl_owner
[fileno (tty_out
->input
)] =
1035 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1036 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1037 init_sigio (fileno (tty_out
->input
));
1039 if (gpm_tty
== tty_out
)
1041 /* Arrange for mouse events to give us SIGIO signals. */
1042 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1043 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1044 init_sigio (gpm_fd
);
1046 #endif /* HAVE_GPM */
1048 #endif /* F_GETOWN */
1049 #endif /* F_SETFL */
1052 /* This symbol is defined on recent USG systems.
1053 Someone says without this call USG won't really buffer the file
1054 even with a call to setbuf. */
1055 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1057 setbuf (tty_out
->output
, (char *) _sobuf
);
1060 if (tty_out
->terminal
->set_terminal_modes_hook
)
1061 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1063 if (!tty_out
->term_initted
)
1065 Lisp_Object tail
, frame
;
1066 FOR_EACH_FRAME (tail
, frame
)
1068 /* XXX This needs to be revised. */
1069 if (FRAME_TERMCAP_P (XFRAME (frame
))
1070 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1071 init_frame_faces (XFRAME (frame
));
1075 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1077 /* We used to call "direct_output_forward_char(0)" here,
1078 but it's not clear why, since it may not do anything anyway. */
1082 Lisp_Object tail
, frame
;
1084 FOR_EACH_FRAME (tail
, frame
)
1086 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1087 || FRAME_MSDOS_P (XFRAME (frame
)))
1088 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1089 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1093 tty_out
->term_initted
= 1;
1096 /* Return nonzero if safe to use tabs in output.
1097 At the time this is called, init_sys_modes has not been done yet. */
1100 tabs_safe_p (int fd
)
1102 struct emacs_tty etty
;
1104 emacs_get_tty (fd
, &etty
);
1107 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1108 #else /* not TABDLY */
1110 #endif /* not TABDLY */
1116 /* Get terminal size from system.
1117 Store number of lines into *HEIGHTP and width into *WIDTHP.
1118 We store 0 if there's no valid information. */
1121 get_tty_size (int fd
, int *widthp
, int *heightp
)
1123 #if defined TIOCGWINSZ
1126 struct winsize size
;
1128 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1129 *widthp
= *heightp
= 0;
1132 *widthp
= size
.ws_col
;
1133 *heightp
= size
.ws_row
;
1136 #elif defined TIOCGSIZE
1138 /* SunOS - style. */
1139 struct ttysize size
;
1141 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1142 *widthp
= *heightp
= 0;
1145 *widthp
= size
.ts_cols
;
1146 *heightp
= size
.ts_lines
;
1149 #elif defined WINDOWSNT
1151 CONSOLE_SCREEN_BUFFER_INFO info
;
1152 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1154 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1155 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1158 *widthp
= *heightp
= 0;
1162 *widthp
= ScreenCols ();
1163 *heightp
= ScreenRows ();
1165 #else /* system doesn't know size */
1173 /* Set the logical window size associated with descriptor FD
1174 to HEIGHT and WIDTH. This is used mainly with ptys. */
1177 set_window_size (int fd
, int height
, int width
)
1182 struct winsize size
;
1183 size
.ws_row
= height
;
1184 size
.ws_col
= width
;
1186 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1187 return 0; /* error */
1194 /* SunOS - style. */
1195 struct ttysize size
;
1196 size
.ts_lines
= height
;
1197 size
.ts_cols
= width
;
1199 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1205 #endif /* not SunOS-style */
1206 #endif /* not BSD-style */
1211 /* Prepare all terminal devices for exiting Emacs. */
1214 reset_all_sys_modes (void)
1216 struct tty_display_info
*tty
;
1217 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1218 reset_sys_modes (tty
);
1221 /* Prepare the terminal for closing it; move the cursor to the
1222 bottom of the frame, turn off interrupt-driven I/O, etc. */
1225 reset_sys_modes (struct tty_display_info
*tty_out
)
1232 if (!tty_out
->term_initted
)
1235 if (!tty_out
->output
)
1236 return; /* The tty is suspended. */
1238 /* Go to and clear the last line of the terminal. */
1240 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1242 /* Code adapted from tty_clear_end_of_line. */
1243 if (tty_out
->TS_clr_line
)
1245 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1248 { /* have to do it the hard way */
1250 tty_turn_off_insert (tty_out
);
1252 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1254 fputc (' ', tty_out
->output
);
1258 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1259 fflush (tty_out
->output
);
1261 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1262 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1265 /* Avoid possible loss of output when changing terminal modes. */
1266 fsync (fileno (tty_out
->output
));
1270 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1271 if (interrupt_input
)
1273 reset_sigio (fileno (tty_out
->input
));
1274 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1275 old_fcntl_owner
[fileno (tty_out
->input
)]);
1277 #endif /* F_SETOWN */
1279 fcntl (fileno (tty_out
->input
), F_SETFL
,
1280 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1282 #endif /* F_SETFL */
1284 if (tty_out
->old_tty
)
1285 while (emacs_set_tty (fileno (tty_out
->input
),
1286 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1289 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1297 /* Set up the proper status flags for use of a pty. */
1302 /* I'm told that TOICREMOTE does not mean control chars
1303 "can't be sent" but rather that they don't have
1304 input-editing or signaling effects.
1305 That should be good, because we have other ways
1306 to do those things in Emacs.
1307 However, telnet mode seems not to work on 4.2.
1308 So TIOCREMOTE is turned off now. */
1310 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1311 will hang. In particular, the "timeout" feature (which
1312 causes a read to return if there is no data available)
1313 does this. Also it is known that telnet mode will hang
1314 in such a way that Emacs must be stopped (perhaps this
1315 is the same problem).
1317 If TIOCREMOTE is turned off, then there is a bug in
1318 hp-ux which sometimes loses data. Apparently the
1319 code which blocks the master process when the internal
1320 buffer fills up does not work. Other than this,
1321 though, everything else seems to work fine.
1323 Since the latter lossage is more benign, we may as well
1324 lose that way. -- cph */
1326 #if defined (UNIX98_PTYS)
1329 ioctl (fd
, FIONBIO
, &on
);
1334 #endif /* HAVE_PTYS */
1337 #include <sys/socket.h>
1339 #endif /* HAVE_SOCKETS */
1342 #ifndef HAVE_H_ERRNO
1345 #endif /* TRY_AGAIN */
1348 init_system_name (void)
1350 #ifndef HAVE_GETHOSTNAME
1353 Vsystem_name
= build_string (uts
.nodename
);
1354 #else /* HAVE_GETHOSTNAME */
1355 unsigned int hostname_size
= 256;
1356 char *hostname
= alloca (hostname_size
);
1358 /* Try to get the host name; if the buffer is too short, try
1359 again. Apparently, the only indication gethostname gives of
1360 whether the buffer was large enough is the presence or absence
1361 of a '\0' in the string. Eech. */
1364 gethostname (hostname
, hostname_size
- 1);
1365 hostname
[hostname_size
- 1] = '\0';
1367 /* Was the buffer large enough for the '\0'? */
1368 if (strlen (hostname
) < hostname_size
- 1)
1371 hostname_size
<<= 1;
1372 hostname
= alloca (hostname_size
);
1375 /* Turn the hostname into the official, fully-qualified hostname.
1376 Don't do this if we're going to dump; this can confuse system
1377 libraries on some machines and make the dumped emacs core dump. */
1380 #endif /* not CANNOT_DUMP */
1381 if (! strchr (hostname
, '.'))
1384 #ifdef HAVE_GETADDRINFO
1385 struct addrinfo
*res
;
1386 struct addrinfo hints
;
1389 memset (&hints
, 0, sizeof (hints
));
1390 hints
.ai_socktype
= SOCK_STREAM
;
1391 hints
.ai_flags
= AI_CANONNAME
;
1393 for (count
= 0;; count
++)
1395 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1396 || ret
!= EAI_AGAIN
)
1401 Fsleep_for (make_number (1), Qnil
);
1406 struct addrinfo
*it
= res
;
1409 char *fqdn
= it
->ai_canonname
;
1410 if (fqdn
&& strchr (fqdn
, '.')
1411 && strcmp (fqdn
, "localhost.localdomain") != 0)
1417 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1418 strcpy (hostname
, it
->ai_canonname
);
1422 #else /* !HAVE_GETADDRINFO */
1424 for (count
= 0;; count
++)
1430 hp
= gethostbyname (hostname
);
1432 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1439 Fsleep_for (make_number (1), Qnil
);
1444 char *fqdn
= (char *) hp
->h_name
;
1446 if (!strchr (fqdn
, '.'))
1448 /* We still don't have a fully qualified domain name.
1449 Try to find one in the list of alternate names */
1450 char **alias
= hp
->h_aliases
;
1452 && (!strchr (*alias
, '.')
1453 || !strcmp (*alias
, "localhost.localdomain")))
1460 #endif /* !HAVE_GETADDRINFO */
1462 #endif /* HAVE_SOCKETS */
1463 Vsystem_name
= build_string (hostname
);
1464 #endif /* HAVE_GETHOSTNAME */
1467 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1468 if (*p
== ' ' || *p
== '\t')
1473 /* POSIX signals support - DJB */
1474 /* Anyone with POSIX signals should have ANSI C declarations */
1476 sigset_t empty_mask
;
1481 sys_signal (int signal_number
, signal_handler_t action
)
1483 struct sigaction new_action
, old_action
;
1484 sigemptyset (&new_action
.sa_mask
);
1485 new_action
.sa_handler
= action
;
1486 new_action
.sa_flags
= 0;
1487 #if defined (SA_RESTART)
1488 /* Emacs mostly works better with restartable system services. If this
1489 flag exists, we probably want to turn it on here.
1490 However, on some systems (only hpux11 at present) this resets the
1491 timeout of `select' which means that `select' never finishes if
1492 it keeps getting signals.
1493 We define BROKEN_SA_RESTART on those systems. */
1494 /* It's not clear why the comment above says "mostly works better". --Stef
1495 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1496 for pending input so we need long-running syscalls to be interrupted
1497 after a signal that sets the interrupt_input_pending flag. */
1498 /* Non-interactive keyboard input goes through stdio, where we always
1499 want restartable system calls. */
1500 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1503 new_action
.sa_flags
= SA_RESTART
;
1505 sigaction (signal_number
, &new_action
, &old_action
);
1506 return (old_action
.sa_handler
);
1509 #endif /* WINDOWSNT */
1512 /* If we're compiling with GCC, we don't need this function, since it
1513 can be written as a macro. */
1515 sys_sigmask (int sig
)
1518 sigemptyset (&mask
);
1519 sigaddset (&mask
, sig
);
1524 /* I'd like to have these guys return pointers to the mask storage in here,
1525 but there'd be trouble if the code was saving multiple masks. I'll be
1526 safe and pass the structure. It normally won't be more than 2 bytes
1530 sys_sigblock (sigset_t new_mask
)
1533 pthread_sigmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1538 sys_sigunblock (sigset_t new_mask
)
1541 pthread_sigmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1546 sys_sigsetmask (sigset_t new_mask
)
1549 pthread_sigmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1554 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1555 static char *my_sys_siglist
[NSIG
];
1559 # define sys_siglist my_sys_siglist
1565 sigemptyset (&empty_mask
);
1567 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1571 sys_siglist
[SIGABRT
] = "Aborted";
1574 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1577 sys_siglist
[SIGALRM
] = "Alarm clock";
1580 sys_siglist
[SIGBUS
] = "Bus error";
1583 sys_siglist
[SIGCLD
] = "Child status changed";
1586 sys_siglist
[SIGCHLD
] = "Child status changed";
1589 sys_siglist
[SIGCONT
] = "Continued";
1592 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1595 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1598 sys_siglist
[SIGEMT
] = "Emulation trap";
1601 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1604 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1607 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1610 sys_siglist
[SIGHUP
] = "Hangup";
1613 sys_siglist
[SIGILL
] = "Illegal instruction";
1616 sys_siglist
[SIGINT
] = "Interrupt";
1619 sys_siglist
[SIGIO
] = "I/O possible";
1622 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1625 sys_siglist
[SIGIOT
] = "IOT trap";
1628 sys_siglist
[SIGKILL
] = "Killed";
1631 sys_siglist
[SIGLOST
] = "Resource lost";
1634 sys_siglist
[SIGLWP
] = "SIGLWP";
1637 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1640 sys_siglist
[SIGWIND
] = "SIGPHONE";
1643 sys_siglist
[SIGPIPE
] = "Broken pipe";
1646 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1649 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1652 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1655 sys_siglist
[SIGPWR
] = "Power-fail restart";
1658 sys_siglist
[SIGQUIT
] = "Quit";
1661 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1664 sys_siglist
[SIGSAK
] = "Secure attention";
1667 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1670 sys_siglist
[SIGSOUND
] = "Sound completed";
1673 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1676 sys_siglist
[SIGSTP
] = "Stopped (user)";
1679 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1682 sys_siglist
[SIGTERM
] = "Terminated";
1685 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1688 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1691 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1694 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1697 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1700 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1703 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1706 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1709 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1712 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1715 sys_siglist
[SIGWINCH
] = "Window size changed";
1718 sys_siglist
[SIGWIND
] = "SIGWIND";
1721 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1724 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1727 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1736 /* Figure out how many bits the system's random number generator uses.
1737 `random' and `lrand48' are assumed to return 31 usable bits.
1738 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1739 so we'll shift it and treat it like the 15-bit USG `rand'. */
1743 # define RAND_BITS 31
1744 # else /* !HAVE_RANDOM */
1745 # ifdef HAVE_LRAND48
1746 # define RAND_BITS 31
1747 # define random lrand48
1748 # else /* !HAVE_LRAND48 */
1749 # define RAND_BITS 15
1750 # if RAND_MAX == 32767
1751 # define random rand
1752 # else /* RAND_MAX != 32767 */
1753 # if RAND_MAX == 2147483647
1754 # define random() (rand () >> 16)
1755 # else /* RAND_MAX != 2147483647 */
1757 # define random rand
1759 # define random() (rand () >> 16)
1761 # endif /* RAND_MAX != 2147483647 */
1762 # endif /* RAND_MAX != 32767 */
1763 # endif /* !HAVE_LRAND48 */
1764 # endif /* !HAVE_RANDOM */
1765 #endif /* !RAND_BITS */
1768 seed_random (void *seed
, ptrdiff_t seed_size
)
1770 #if defined HAVE_RANDOM || ! defined HAV_LRAND48
1771 unsigned int arg
= 0;
1775 unsigned char *argp
= (unsigned char *) &arg
;
1776 unsigned char *seedp
= seed
;
1778 for (i
= 0; i
< seed_size
; i
++)
1779 argp
[i
% sizeof arg
] ^= seedp
[i
];
1783 # ifdef HAVE_LRAND48
1794 EMACS_TIME t
= current_emacs_time ();
1795 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
1796 seed_random (&v
, sizeof v
);
1800 * Return a nonnegative random integer out of whatever we've got.
1801 * It contains enough bits to make a random (signed) Emacs fixnum.
1802 * This suffices even for a 64-bit architecture with a 15-bit rand.
1809 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1810 val
= (random () ^ (val
<< RAND_BITS
)
1811 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1812 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1813 return val
& INTMASK
;
1816 #ifndef HAVE_SNPRINTF
1817 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1819 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1821 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1822 ptrdiff_t nbytes
= size
- 1;
1827 va_start (ap
, format
);
1828 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1832 if (nbytes
== size
- 1)
1834 /* Calculate the length of the string that would have been created
1835 had the buffer been large enough. */
1836 char stackbuf
[4000];
1838 ptrdiff_t bsize
= sizeof stackbuf
;
1839 va_start (ap
, format
);
1840 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1846 if (INT_MAX
< nbytes
)
1860 emacs_open (const char *path
, int oflag
, int mode
)
1862 register int rtnval
;
1864 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1865 && (errno
== EINTR
))
1871 emacs_close (int fd
)
1874 register int rtnval
;
1876 while ((rtnval
= close (fd
)) == -1
1877 && (errno
== EINTR
))
1880 /* If close is interrupted SunOS 4.1 may or may not have closed the
1881 file descriptor. If it did the second close will fail with
1882 errno = EBADF. That means we have succeeded. */
1883 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1889 /* Maximum number of bytes to read or write in a single system call.
1890 This works around a serious bug in Linux kernels before 2.6.16; see
1891 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1892 It's likely to work around similar bugs in other operating systems, so do it
1893 on all platforms. Round INT_MAX down to a page size, with the conservative
1894 assumption that page sizes are at most 2**18 bytes (any kernel with a
1895 page size larger than that shouldn't have the bug). */
1896 #ifndef MAX_RW_COUNT
1897 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1900 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1901 Return the number of bytes read, which might be less than NBYTE.
1902 On error, set errno and return -1. */
1904 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1906 register ssize_t rtnval
;
1908 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1909 passes a size that large to emacs_read. */
1911 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1912 && (errno
== EINTR
))
1917 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1918 or if a partial write occurs. Return the number of bytes written, setting
1919 errno if this is less than NBYTE. */
1921 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1924 ptrdiff_t bytes_written
;
1930 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1937 /* I originally used `QUIT' but that might causes files to
1938 be truncated if you hit C-g in the middle of it. --Stef */
1939 process_pending_signals ();
1949 bytes_written
+= rtnval
;
1952 return (bytes_written
);
1955 static struct allocator
const emacs_norealloc_allocator
=
1956 { xmalloc
, NULL
, xfree
, memory_full
};
1958 /* Get the symbolic link value of FILENAME. Return a pointer to a
1959 NUL-terminated string. If readlink fails, return NULL and set
1960 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1961 Otherwise, allocate memory and return a pointer to that memory. If
1962 memory allocation fails, diagnose and fail without returning. If
1963 successful, store the length of the symbolic link into *LINKLEN. */
1965 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1967 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1968 &emacs_norealloc_allocator
, careadlinkatcwd
);
1973 * All of the following are for USG.
1975 * On USG systems the system calls are INTERRUPTIBLE by signals
1976 * that the user program has elected to catch. Thus the system call
1977 * must be retried in these cases. To handle this without massive
1978 * changes in the source code, we remap the standard system call names
1979 * to names for our own functions in sysdep.c that do the system call
1980 * with retries. Actually, for portability reasons, it is good
1981 * programming practice, as this example shows, to limit all actual
1982 * system calls to a single occurrence in the source. Sure, this
1983 * adds an extra level of function call overhead but it is almost
1984 * always negligible. Fred Fish, Unisoft Systems Inc.
1988 * Warning, this function may not duplicate 4.2 action properly
1989 * under error conditions.
1992 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
1995 /* In 4.1, param.h fails to define this. */
1996 #define MAXPATHLEN 1024
2000 getwd (char *pathname
)
2002 char *npath
, *spath
;
2003 extern char *getcwd (char *, size_t);
2005 BLOCK_INPUT
; /* getcwd uses malloc */
2006 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2012 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2013 up to first slash. Should be harmless on other systems. */
2014 while (*npath
&& *npath
!= '/')
2016 strcpy (pathname
, npath
);
2017 free (spath
); /* getcwd uses malloc */
2022 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2025 * This function will go away as soon as all the stubs fixed. (fnf)
2029 croak (char *badfunc
)
2031 printf ("%s not yet implemented\r\n", badfunc
);
2032 reset_all_sys_modes ();
2038 /* Directory routines for systems that don't have them. */
2040 #ifdef HAVE_DIRENT_H
2044 #if !defined (HAVE_CLOSEDIR)
2047 closedir (DIR *dirp
/* stream from opendir */)
2051 rtnval
= emacs_close (dirp
->dd_fd
);
2056 #endif /* not HAVE_CLOSEDIR */
2057 #endif /* HAVE_DIRENT_H */
2060 /* Return a struct timeval that is roughly equivalent to T.
2061 Use the least timeval not less than T.
2062 Return an extremal value if the result would overflow. */
2064 make_timeval (EMACS_TIME t
)
2067 tv
.tv_sec
= t
.tv_sec
;
2068 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2070 if (t
.tv_nsec
% 1000 != 0)
2072 if (tv
.tv_usec
< 999999)
2074 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2084 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2085 ATIME and MTIME, respectively.
2086 FD must be either negative -- in which case it is ignored --
2087 or a file descriptor that is open on FILE.
2088 If FD is nonnegative, then FILE can be NULL. */
2090 set_file_times (int fd
, const char *filename
,
2091 EMACS_TIME atime
, EMACS_TIME mtime
)
2093 struct timespec timespec
[2];
2094 timespec
[0] = atime
;
2095 timespec
[1] = mtime
;
2096 return fdutimens (fd
, filename
, timespec
);
2099 #ifndef HAVE_STRSIGNAL
2101 strsignal (int code
)
2105 if (0 <= code
&& code
< NSIG
)
2107 /* Cast to suppress warning if the table has const char *. */
2108 signame
= (char *) sys_siglist
[code
];
2113 #endif /* HAVE_STRSIGNAL */
2116 /* For make-serial-process */
2118 serial_open (char *port
)
2122 fd
= emacs_open ((char*) port
,
2135 error ("Could not open %s: %s",
2136 port
, emacs_strerror (errno
));
2139 ioctl (fd
, TIOCEXCL
, (char *) 0);
2145 #if !defined (HAVE_CFMAKERAW)
2146 /* Workaround for targets which are missing cfmakeraw. */
2147 /* Pasted from man page. */
2149 cfmakeraw (struct termios
*termios_p
)
2151 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2152 termios_p
->c_oflag
&= ~OPOST
;
2153 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2154 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2155 termios_p
->c_cflag
|= CS8
;
2157 #endif /* !defined (HAVE_CFMAKERAW */
2159 #if !defined (HAVE_CFSETSPEED)
2160 /* Workaround for targets which are missing cfsetspeed. */
2162 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2164 return (cfsetispeed (termios_p
, vitesse
)
2165 + cfsetospeed (termios_p
, vitesse
));
2169 /* For serial-process-configure */
2171 serial_configure (struct Lisp_Process
*p
,
2172 Lisp_Object contact
)
2174 Lisp_Object childp2
= Qnil
;
2175 Lisp_Object tem
= Qnil
;
2176 struct termios attr
;
2178 char summary
[4] = "???"; /* This usually becomes "8N1". */
2180 childp2
= Fcopy_sequence (p
->childp
);
2182 /* Read port attributes and prepare default configuration. */
2183 err
= tcgetattr (p
->outfd
, &attr
);
2185 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2187 #if defined (CLOCAL)
2188 attr
.c_cflag
|= CLOCAL
;
2191 attr
.c_cflag
|= CREAD
;
2194 /* Configure speed. */
2195 if (!NILP (Fplist_member (contact
, QCspeed
)))
2196 tem
= Fplist_get (contact
, QCspeed
);
2198 tem
= Fplist_get (p
->childp
, QCspeed
);
2200 err
= cfsetspeed (&attr
, XINT (tem
));
2202 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2203 emacs_strerror (errno
));
2204 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2206 /* Configure bytesize. */
2207 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2208 tem
= Fplist_get (contact
, QCbytesize
);
2210 tem
= Fplist_get (p
->childp
, QCbytesize
);
2212 tem
= make_number (8);
2214 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2215 error (":bytesize must be nil (8), 7, or 8");
2216 summary
[0] = XINT (tem
) + '0';
2217 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2218 attr
.c_cflag
&= ~CSIZE
;
2219 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2221 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2222 if (XINT (tem
) != 8)
2223 error ("Bytesize cannot be changed");
2225 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2227 /* Configure parity. */
2228 if (!NILP (Fplist_member (contact
, QCparity
)))
2229 tem
= Fplist_get (contact
, QCparity
);
2231 tem
= Fplist_get (p
->childp
, QCparity
);
2232 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2233 error (":parity must be nil (no parity), `even', or `odd'");
2234 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2235 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2236 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2241 else if (EQ (tem
, Qeven
))
2244 attr
.c_cflag
|= PARENB
;
2245 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2247 else if (EQ (tem
, Qodd
))
2250 attr
.c_cflag
|= (PARENB
| PARODD
);
2251 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2254 /* Don't error on no parity, which should be set by cfmakeraw. */
2256 error ("Parity cannot be configured");
2258 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2260 /* Configure stopbits. */
2261 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2262 tem
= Fplist_get (contact
, QCstopbits
);
2264 tem
= Fplist_get (p
->childp
, QCstopbits
);
2266 tem
= make_number (1);
2268 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2269 error (":stopbits must be nil (1 stopbit), 1, or 2");
2270 summary
[2] = XINT (tem
) + '0';
2271 #if defined (CSTOPB)
2272 attr
.c_cflag
&= ~CSTOPB
;
2273 if (XINT (tem
) == 2)
2274 attr
.c_cflag
|= CSTOPB
;
2276 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2277 if (XINT (tem
) != 1)
2278 error ("Stopbits cannot be configured");
2280 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2282 /* Configure flowcontrol. */
2283 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2284 tem
= Fplist_get (contact
, QCflowcontrol
);
2286 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2287 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2288 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2289 #if defined (CRTSCTS)
2290 attr
.c_cflag
&= ~CRTSCTS
;
2292 #if defined (CNEW_RTSCTS)
2293 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2295 #if defined (IXON) && defined (IXOFF)
2296 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2300 /* Already configured. */
2302 else if (EQ (tem
, Qhw
))
2304 #if defined (CRTSCTS)
2305 attr
.c_cflag
|= CRTSCTS
;
2306 #elif defined (CNEW_RTSCTS)
2307 attr
.c_cflag
|= CNEW_RTSCTS
;
2309 error ("Hardware flowcontrol (RTS/CTS) not supported");
2312 else if (EQ (tem
, Qsw
))
2314 #if defined (IXON) && defined (IXOFF)
2315 attr
.c_iflag
|= (IXON
| IXOFF
);
2317 error ("Software flowcontrol (XON/XOFF) not supported");
2320 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2322 /* Activate configuration. */
2323 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2325 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2327 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2328 pset_childp (p
, childp2
);
2330 #endif /* not DOS_NT */
2332 /* System depended enumeration of and access to system processes a-la ps(1). */
2336 /* Process enumeration and access via /proc. */
2339 list_system_processes (void)
2341 Lisp_Object procdir
, match
, proclist
, next
;
2342 struct gcpro gcpro1
, gcpro2
;
2343 register Lisp_Object tail
;
2345 GCPRO2 (procdir
, match
);
2346 /* For every process on the system, there's a directory in the
2347 "/proc" pseudo-directory whose name is the numeric ID of that
2349 procdir
= build_string ("/proc");
2350 match
= build_string ("[0-9]+");
2351 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2353 /* `proclist' gives process IDs as strings. Destructively convert
2354 each string into a number. */
2355 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2358 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2362 /* directory_files_internal returns the files in reverse order; undo
2364 proclist
= Fnreverse (proclist
);
2368 #elif defined BSD_SYSTEM
2371 list_system_processes (void)
2373 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2374 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2376 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2379 struct kinfo_proc
*procs
;
2382 struct gcpro gcpro1
;
2383 Lisp_Object proclist
= Qnil
;
2385 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2388 procs
= xmalloc (len
);
2389 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2396 len
/= sizeof (struct kinfo_proc
);
2397 for (i
= 0; i
< len
; i
++)
2399 #if defined DARWIN_OS || defined __NetBSD__
2400 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2401 #elif defined __OpenBSD__
2402 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2404 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2414 /* The WINDOWSNT implementation is in w32.c.
2415 The MSDOS implementation is in dosfns.c. */
2416 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2419 list_system_processes (void)
2424 #endif /* !defined (WINDOWSNT) */
2428 time_from_jiffies (unsigned long long tval
, long hz
)
2430 unsigned long long s
= tval
/ hz
;
2431 unsigned long long frac
= tval
% hz
;
2434 if (TYPE_MAXIMUM (time_t) < s
)
2436 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2437 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2438 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2441 /* This is reachable only in the unlikely case that HZ * HZ
2442 exceeds ULLONG_MAX. It calculates an approximation that is
2443 guaranteed to be in range. */
2444 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2445 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2446 ns
= frac
/ hz_per_ns
;
2449 return make_emacs_time (s
, ns
);
2453 ltime_from_jiffies (unsigned long long tval
, long hz
)
2455 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2456 return make_lisp_time (t
);
2463 EMACS_TIME up
= make_emacs_time (0, 0);
2466 fup
= fopen ("/proc/uptime", "r");
2470 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2471 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2473 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2474 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2475 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2478 if (TYPE_MAXIMUM (time_t) < upsec
)
2480 upsec
= TYPE_MAXIMUM (time_t);
2481 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2485 int upfraclen
= upfrac_end
- upfrac_start
;
2486 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2488 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2490 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2492 up
= make_emacs_time (upsec
, upfrac
);
2501 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2502 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2505 procfs_ttyname (int rdev
)
2508 char name
[PATH_MAX
];
2511 fdev
= fopen ("/proc/tty/drivers", "r");
2516 unsigned long minor_beg
, minor_end
;
2517 char minor
[25]; /* 2 32-bit numbers + dash */
2520 while (!feof (fdev
) && !ferror (fdev
))
2522 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2523 && major
== MAJOR (rdev
))
2525 minor_beg
= strtoul (minor
, &endp
, 0);
2527 minor_end
= minor_beg
;
2528 else if (*endp
== '-')
2529 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2533 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2535 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2543 return build_string (name
);
2546 static unsigned long
2547 procfs_get_total_memory (void)
2550 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2553 fmem
= fopen ("/proc/meminfo", "r");
2557 unsigned long entry_value
;
2558 char entry_name
[20]; /* the longest I saw is 13+1 */
2560 while (!feof (fmem
) && !ferror (fmem
))
2562 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2563 && strcmp (entry_name
, "MemTotal:") == 0)
2565 retval
= entry_value
;
2576 system_process_attributes (Lisp_Object pid
)
2578 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2582 long clocks_per_sec
;
2584 char procbuf
[1025], *p
, *q
;
2587 static char const default_cmd
[] = "???";
2588 const char *cmd
= default_cmd
;
2589 int cmdsize
= sizeof default_cmd
- 1;
2590 char *cmdline
= NULL
;
2591 ptrdiff_t cmdline_size
;
2594 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2597 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2598 long priority
, niceness
, rss
;
2599 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2600 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2602 Lisp_Object attrs
= Qnil
;
2603 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2604 struct gcpro gcpro1
, gcpro2
;
2606 CHECK_NUMBER_OR_FLOAT (pid
);
2607 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2608 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2609 if (stat (procfn
, &st
) < 0)
2612 GCPRO2 (attrs
, decoded_cmd
);
2616 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2618 pw
= getpwuid (uid
);
2621 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2624 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2626 gr
= getgrgid (gid
);
2629 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2631 strcpy (fn
, procfn
);
2632 procfn_end
= fn
+ strlen (fn
);
2633 strcpy (procfn_end
, "/stat");
2634 fd
= emacs_open (fn
, O_RDONLY
, 0);
2635 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2637 procbuf
[nread
] = '\0';
2640 p
= strchr (p
, '(');
2643 q
= strrchr (p
+ 1, ')');
2653 /* Command name is encoded in locale-coding-system; decode it. */
2654 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2655 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2656 Vlocale_coding_system
, 0);
2657 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2661 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2663 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2664 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2665 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2666 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2667 &u_time
, &s_time
, &cutime
, &cstime
,
2668 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2673 state_str
[1] = '\0';
2674 tem
= build_string (state_str
);
2675 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2677 /* Stops GCC whining about limited range of data type. */
2682 thcount_eint
= thcount
;
2683 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2684 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2685 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2686 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2687 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2688 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2689 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2690 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2691 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2692 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2693 if (clocks_per_sec
< 0)
2694 clocks_per_sec
= 100;
2695 attrs
= Fcons (Fcons (Qutime
,
2696 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2698 attrs
= Fcons (Fcons (Qstime
,
2699 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2701 attrs
= Fcons (Fcons (Qtime
,
2702 ltime_from_jiffies (s_time
+ u_time
,
2705 attrs
= Fcons (Fcons (Qcutime
,
2706 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2708 attrs
= Fcons (Fcons (Qcstime
,
2709 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2711 attrs
= Fcons (Fcons (Qctime
,
2712 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2714 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2715 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2716 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2717 tnow
= current_emacs_time ();
2718 telapsed
= get_up_time ();
2719 tboot
= sub_emacs_time (tnow
, telapsed
);
2720 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2721 tstart
= add_emacs_time (tboot
, tstart
);
2722 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2723 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2724 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2725 telapsed
= sub_emacs_time (tnow
, tstart
);
2726 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2727 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2728 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2729 / EMACS_TIME_TO_DOUBLE (telapsed
));
2732 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2733 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2736 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2743 strcpy (procfn_end
, "/cmdline");
2744 fd
= emacs_open (fn
, O_RDONLY
, 0);
2748 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2750 if (emacs_read (fd
, &ch
, 1) != 1)
2753 if (c_isspace (c
) || c
== '\\')
2754 cmdline_size
++; /* for later quoting, see below */
2758 cmdline
= xmalloc (cmdline_size
+ 1);
2759 lseek (fd
, 0L, SEEK_SET
);
2761 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2762 cmdline
[nread
++] = '\0';
2765 /* Assigning zero to `nread' makes us skip the following
2766 two loops, assign zero to cmdline_size, and enter the
2767 following `if' clause that handles unknown command
2771 /* We don't want trailing null characters. */
2772 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2774 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2776 /* Escape-quote whitespace and backslashes. */
2777 if (c_isspace (*p
) || *p
== '\\')
2779 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2783 else if (*p
== '\0')
2786 cmdline_size
= nread
;
2790 cmdline_size
= cmdsize
+ 2;
2791 cmdline
= xmalloc (cmdline_size
+ 1);
2792 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2795 /* Command line is encoded in locale-coding-system; decode it. */
2796 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2797 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2798 Vlocale_coding_system
, 0);
2800 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2807 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2809 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2810 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2811 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2812 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2813 #undef _FILE_OFFSET_BITS
2815 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2820 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2821 #define _FILE_OFFSET_BITS 64
2822 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2824 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2827 system_process_attributes (Lisp_Object pid
)
2829 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2834 struct psinfo pinfo
;
2840 Lisp_Object attrs
= Qnil
;
2841 Lisp_Object decoded_cmd
, tem
;
2842 struct gcpro gcpro1
, gcpro2
;
2844 CHECK_NUMBER_OR_FLOAT (pid
);
2845 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2846 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2847 if (stat (procfn
, &st
) < 0)
2850 GCPRO2 (attrs
, decoded_cmd
);
2854 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2856 pw
= getpwuid (uid
);
2859 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2862 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2864 gr
= getgrgid (gid
);
2867 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2869 strcpy (fn
, procfn
);
2870 procfn_end
= fn
+ strlen (fn
);
2871 strcpy (procfn_end
, "/psinfo");
2872 fd
= emacs_open (fn
, O_RDONLY
, 0);
2874 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2876 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2877 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2878 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2882 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2883 state_str
[1] = '\0';
2884 tem
= build_string (state_str
);
2885 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2888 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2889 need to get a string from it. */
2891 /* FIXME: missing: Qtpgid */
2903 Are they available? */
2905 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
2906 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
2907 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
2908 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
2909 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
2911 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
2912 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
2913 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
2915 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2916 range 0 .. 2**15, representing 0.0 .. 1.0. */
2917 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
2918 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
2921 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
2922 strlen (pinfo
.pr_fname
)),
2923 Vlocale_coding_system
, 0);
2924 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2926 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
2927 strlen (pinfo
.pr_psargs
)),
2928 Vlocale_coding_system
, 0);
2929 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2939 #elif defined __FreeBSD__
2942 timeval_to_EMACS_TIME (struct timeval t
)
2944 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
2948 make_lisp_timeval (struct timeval t
)
2950 return make_lisp_time (timeval_to_EMACS_TIME (t
));
2954 system_process_attributes (Lisp_Object pid
)
2957 int pagesize
= getpagesize ();
2964 char args
[MAXPATHLEN
];
2967 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
2968 struct kinfo_proc proc
;
2969 size_t proclen
= sizeof proc
;
2971 struct gcpro gcpro1
, gcpro2
;
2972 Lisp_Object attrs
= Qnil
;
2973 Lisp_Object decoded_comm
;
2975 CHECK_NUMBER_OR_FLOAT (pid
);
2976 CONS_TO_INTEGER (pid
, int, proc_id
);
2979 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
2982 GCPRO2 (attrs
, decoded_comm
);
2984 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
2987 pw
= getpwuid (proc
.ki_uid
);
2990 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2992 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
2995 gr
= getgrgid (proc
.ki_svgid
);
2998 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3000 decoded_comm
= code_convert_string_norecord
3001 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3002 Vlocale_coding_system
, 0);
3004 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3006 char state
[2] = {'\0', '\0'};
3007 switch (proc
.ki_stat
)
3029 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3032 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3033 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3034 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3037 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3040 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3042 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3043 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3044 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3045 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3046 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3048 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3050 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3052 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3053 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3054 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3056 attrs
= Fcons (Fcons (Qcutime
,
3057 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3059 attrs
= Fcons (Fcons (Qcstime
,
3060 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3062 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3063 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3064 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3066 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3068 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3069 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3070 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3071 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3072 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3075 now
= current_emacs_time ();
3076 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3077 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3079 len
= sizeof fscale
;
3080 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3085 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3087 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3088 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3089 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3093 len
= sizeof npages
;
3094 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3096 double pmem
= (proc
.ki_flag
& P_INMEM
3097 ? 100.0 * proc
.ki_rssize
/ npages
3099 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3102 mib
[2] = KERN_PROC_ARGS
;
3104 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3107 for (i
= 0; i
< len
; i
++)
3109 if (! args
[i
] && i
< len
- 1)
3114 (code_convert_string_norecord
3115 (build_unibyte_string (args
),
3116 Vlocale_coding_system
, 0));
3118 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3125 /* The WINDOWSNT implementation is in w32.c.
3126 The MSDOS implementation is in dosfns.c. */
3127 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3130 system_process_attributes (Lisp_Object pid
)
3135 #endif /* !defined (WINDOWSNT) */