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/>. */
28 #endif /* HAVE_PWD_H */
32 #include <allocator.h>
33 #include <careadlinkat.h>
34 #include <ignore-value.h>
38 #include "sysselect.h"
39 #include "blockinput.h"
42 #include <sys/param.h>
43 #include <sys/sysctl.h>
48 #include <sys/resource.h>
54 #define write sys_write
56 #endif /* not WINDOWSNT */
58 #include <sys/types.h>
62 /* Get SI_SRPC_DOMAIN, if it is available. */
63 #ifdef HAVE_SYS_SYSTEMINFO_H
64 #include <sys/systeminfo.h>
67 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
69 #include <sys/param.h>
78 #ifdef HAVE_SYS_UTSNAME_H
79 #include <sys/utsname.h>
81 #endif /* HAVE_SYS_UTSNAME_H */
86 #include "termhooks.h"
89 #include "dispextern.h"
91 #include "cm.h" /* for reset_sys_modes */
95 /* In process.h which conflicts with the local copy. */
97 int _cdecl
_spawnlp (int, const char *, const char *, ...);
98 int _cdecl
_getpid (void);
99 extern char *getwd (char *);
102 #include "syssignal.h"
105 static int emacs_get_tty (int, struct emacs_tty
*);
106 static int emacs_set_tty (int, struct emacs_tty
*, int);
107 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
108 static _Noreturn
void croak (char *);
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 wait3 and make the process go away. */
298 /* There is some indication that there is a bug involved with
299 termination of subprocesses, perhaps involving a kernel bug too,
300 but no idea what it is. Just as a hunch we signal SIGCHLD to see
301 if that causes the problem to go away or get worse. */
302 sigsetmask (sigmask (SIGCHLD
));
303 if (0 > kill (pid
, 0))
305 sigsetmask (SIGEMPTYMASK
);
306 kill (getpid (), SIGCHLD
);
312 sigpause (SIGEMPTYMASK
);
313 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
317 #else /* not WINDOWSNT */
318 sigblock (sigmask (SIGCHLD
));
320 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
322 sigunblock (sigmask (SIGCHLD
));
326 sigsuspend (&empty_mask
);
327 #endif /* not WINDOWSNT */
328 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
334 /* Wait for subprocess with process id `pid' to terminate and
335 make sure it will get eliminated (not remain forever as a zombie) */
338 wait_for_termination (pid_t pid
)
340 wait_for_termination_1 (pid
, 0);
343 /* Like the above, but allow keyboard interruption. */
345 interruptible_wait_for_termination (pid_t pid
)
347 wait_for_termination_1 (pid
, 1);
351 * flush any pending output
352 * (may flush input as well; it does not matter the way we use it)
356 flush_pending_output (int channel
)
358 /* FIXME: maybe this function should be removed */
361 /* Set up the terminal at the other end of a pseudo-terminal that
362 we will be controlling an inferior through.
363 It should not echo or do line-editing, since that is done
364 in Emacs. No padding needed for insertion into an Emacs buffer. */
367 child_setup_tty (int out
)
372 emacs_get_tty (out
, &s
);
373 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
374 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
376 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
377 Some versions of GNU Hurd do not have FFDLY? */
379 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
380 /* No output delays */
382 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
383 /* No output delays */
386 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
387 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
389 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
392 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
395 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
397 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
398 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
399 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
400 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
403 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
406 #ifdef SIGNALS_VIA_CHARACTERS
407 /* the QUIT and INTR character are used in process_send_signal
408 so set them here to something useful. */
409 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
410 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
411 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
412 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
413 #endif /* not SIGNALS_VIA_CHARACTERS */
416 /* Also, PTY overloads NUL and BREAK.
417 don't ignore break, but don't signal either, so it looks like NUL. */
418 s
.main
.c_iflag
&= ~IGNBRK
;
419 s
.main
.c_iflag
&= ~BRKINT
;
420 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
421 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
422 would force it to 0377. That looks like duplicated code. */
423 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
426 /* We originally enabled ICANON (and set VEOF to 04), and then had
427 process.c send additional EOF chars to flush the output when faced
428 with long lines, but this leads to weird effects when the
429 subprocess has disabled ICANON and ends up seeing those spurious
430 extra EOFs. So we don't send EOFs any more in
431 process.c:send_process. First we tried to disable ICANON by
432 default, so if a subsprocess sets up ICANON, it's his problem (or
433 the Elisp package that talks to it) to deal with lines that are
434 too long. But this disables some features, such as the ability
435 to send EOF signals. So we re-enabled ICANON but there is no
436 more "send eof to flush" going on (which is wrong and unportable
437 in itself). The correct way to handle too much output is to
438 buffer what could not be written and then write it again when
439 select returns ok for writing. This has it own set of
440 problems. Write is now asynchronous, is that a problem? How much
441 do we buffer, and what do we do when that limit is reached? */
443 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
444 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
445 #if 0 /* These settings only apply to non-ICANON mode. */
446 s
.main
.c_cc
[VMIN
] = 1;
447 s
.main
.c_cc
[VTIME
] = 0;
450 emacs_set_tty (out
, &s
, 0);
451 #endif /* not WINDOWSNT */
453 #endif /* not MSDOS */
456 /* Record a signal code and the handler for it. */
460 void (*handler
) (int);
463 static void save_signal_handlers (struct save_signal
*);
464 static void restore_signal_handlers (struct save_signal
*);
466 /* Suspend the Emacs process; give terminal to its superior. */
471 #if defined (SIGTSTP) && !defined (MSDOS)
474 int pgrp
= EMACS_GETPGRP (0);
475 EMACS_KILLPG (pgrp
, SIGTSTP
);
478 #else /* No SIGTSTP */
479 /* On a system where suspending is not implemented,
480 instead fork a subshell and let it talk directly to the terminal
484 #endif /* no SIGTSTP */
487 /* Fork a subshell. */
492 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
494 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
497 struct save_signal saved_handlers
[5];
499 unsigned char *volatile str_volatile
= 0;
503 saved_handlers
[0].code
= SIGINT
;
504 saved_handlers
[1].code
= SIGQUIT
;
505 saved_handlers
[2].code
= SIGTERM
;
507 saved_handlers
[3].code
= SIGIO
;
508 saved_handlers
[4].code
= 0;
510 saved_handlers
[3].code
= 0;
513 /* Mentioning current_buffer->buffer would mean including buffer.h,
514 which somehow wedges the hp compiler. So instead... */
516 dir
= intern ("default-directory");
517 if (NILP (Fboundp (dir
)))
519 dir
= Fsymbol_value (dir
);
523 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
524 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
526 memcpy (str
, SDATA (dir
), len
);
527 if (str
[len
- 1] != '/') str
[len
++] = '/';
533 save_signal_handlers (saved_handlers
);
534 synch_process_alive
= 1;
538 error ("Can't spawn subshell");
545 #ifdef DOS_NT /* MW, Aug 1993 */
548 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
551 sh
= (char *) egetenv ("SHELL");
555 /* Use our buffer's default directory for the subshell. */
557 if (str
&& chdir ((char *) str
) != 0)
560 ignore_value (write (1, "Can't chdir\n", 12));
565 close_process_descs (); /* Close Emacs's pipes/ptys */
567 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
569 char *epwd
= getenv ("PWD");
570 char old_pwd
[MAXPATHLEN
+1+4];
572 /* If PWD is set, pass it with corrected value. */
575 strcpy (old_pwd
, epwd
);
576 if (str
[len
- 1] == '/')
578 setenv ("PWD", str
, 1);
581 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
583 putenv (old_pwd
); /* restore previous value */
585 #else /* not MSDOS */
587 /* Waits for process completion */
588 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
589 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
591 write (1, "Can't execute subshell", 22);
592 #else /* not WINDOWSNT */
593 execlp (sh
, sh
, (char *) 0);
594 ignore_value (write (1, "Can't execute subshell", 22));
596 #endif /* not WINDOWSNT */
597 #endif /* not MSDOS */
600 /* Do this now if we did not do it before. */
602 save_signal_handlers (saved_handlers
);
603 synch_process_alive
= 1;
607 wait_for_termination (pid
);
609 restore_signal_handlers (saved_handlers
);
610 synch_process_alive
= 0;
614 save_signal_handlers (struct save_signal
*saved_handlers
)
616 while (saved_handlers
->code
)
618 saved_handlers
->handler
619 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
625 restore_signal_handlers (struct save_signal
*saved_handlers
)
627 while (saved_handlers
->code
)
629 signal (saved_handlers
->code
, saved_handlers
->handler
);
635 /* If SIGIO is broken, don't do anything. */
652 unrequest_sigio (void)
659 static int old_fcntl_flags
[MAXDESC
];
665 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
666 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
668 interrupts_deferred
= 0;
675 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
679 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
680 /* XXX Uhm, FASYNC is not used anymore here. */
681 /* XXX Yeah, but you need it for SIGIO, don't you? */
690 sigunblock (sigmask (SIGWINCH
));
692 sigunblock (sigmask (SIGIO
));
694 interrupts_deferred
= 0;
698 unrequest_sigio (void)
703 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
709 sigblock (sigmask (SIGWINCH
));
711 sigblock (sigmask (SIGIO
));
712 interrupts_deferred
= 1;
715 #else /* no FASYNC */
721 if (noninteractive
|| read_socket_hook
)
724 croak ("request_sigio");
728 unrequest_sigio (void)
730 if (noninteractive
|| read_socket_hook
)
733 croak ("unrequest_sigio");
742 /* Getting and setting emacs_tty structures. */
744 /* Set *TC to the parameters associated with the terminal FD.
745 Return zero if all's well, or -1 if we ran into an error we
746 couldn't deal with. */
748 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
750 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
752 /* We have those nifty POSIX tcmumbleattr functions. */
753 memset (&settings
->main
, 0, sizeof (settings
->main
));
754 if (tcgetattr (fd
, &settings
->main
) < 0)
758 /* We have survived the tempest. */
763 /* Set the parameters of the tty on FD according to the contents of
764 *SETTINGS. If FLUSHP is non-zero, we discard input.
765 Return 0 if all went well, and -1 if anything failed. */
768 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
770 /* Set the primary parameters - baud rate, character size, etcetera. */
773 /* We have those nifty POSIX tcmumbleattr functions.
774 William J. Smith <wjs@wiis.wang.com> writes:
775 "POSIX 1003.1 defines tcsetattr to return success if it was
776 able to perform any of the requested actions, even if some
777 of the requested actions could not be performed.
778 We must read settings back to ensure tty setup properly.
779 AIX requires this to keep tty from hanging occasionally." */
780 /* This make sure that we don't loop indefinitely in here. */
781 for (i
= 0 ; i
< 10 ; i
++)
782 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
793 memset (&new, 0, sizeof (new));
794 /* Get the current settings, and see if they're what we asked for. */
795 tcgetattr (fd
, &new);
796 /* We cannot use memcmp on the whole structure here because under
797 * aix386 the termios structure has some reserved field that may
800 if ( new.c_iflag
== settings
->main
.c_iflag
801 && new.c_oflag
== settings
->main
.c_oflag
802 && new.c_cflag
== settings
->main
.c_cflag
803 && new.c_lflag
== settings
->main
.c_lflag
804 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
811 /* We have survived the tempest. */
818 static int old_fcntl_owner
[MAXDESC
];
819 #endif /* F_SETOWN */
821 /* This may also be defined in stdio,
822 but if so, this does no harm,
823 and using the same name avoids wasting the other one's space. */
826 unsigned char _sobuf
[BUFSIZ
+8];
831 /* Initialize the terminal mode on all tty devices that are currently
835 init_all_sys_modes (void)
837 struct tty_display_info
*tty
;
838 for (tty
= tty_list
; tty
; tty
= tty
->next
)
839 init_sys_modes (tty
);
842 /* Initialize the terminal mode on the given tty device. */
845 init_sys_modes (struct tty_display_info
*tty_out
)
847 struct emacs_tty tty
;
848 Lisp_Object terminal
;
850 Vtty_erase_char
= Qnil
;
855 if (!tty_out
->output
)
856 return; /* The tty is suspended. */
858 if (! tty_out
->old_tty
)
859 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
861 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
863 tty
= *tty_out
->old_tty
;
865 #if !defined (DOS_NT)
866 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
868 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
869 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
870 #ifdef INLCR /* I'm just being cautious,
871 since I can't check how widespread INLCR is--rms. */
872 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
875 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
877 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
878 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
880 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
882 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
883 if (tty_out
->flow_control
)
885 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
887 tty
.main
.c_iflag
&= ~IXANY
;
891 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
892 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
894 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
896 if (tty_out
->meta_key
)
898 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
899 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
903 XSETTERMINAL(terminal
, tty_out
->terminal
);
904 if (!NILP (Fcontrolling_tty_p (terminal
)))
906 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
907 /* Set up C-g for both SIGQUIT and SIGINT.
908 We don't know which we will get, but we handle both alike
909 so which one it really gives us does not matter. */
910 tty
.main
.c_cc
[VQUIT
] = quit_char
;
914 /* We normally don't get interrupt or quit signals from tty
915 devices other than our controlling terminal; therefore,
916 we must handle C-g as normal input. Unfortunately, this
917 means that the interrupt and quit feature must be
918 disabled on secondary ttys, or we would not even see the
921 Note that even though emacsclient could have special code
922 to pass SIGINT to Emacs, we should _not_ enable
923 interrupt/quit keys for emacsclient frames. This means
924 that we can't break out of loops in C code from a
925 secondary tty frame, but we can always decide what
926 display the C-g came from, which is more important from a
927 usability point of view. (Consider the case when two
928 people work together using the same Emacs instance.) */
929 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
930 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
932 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
933 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
935 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
940 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
943 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
945 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
946 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
949 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
952 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
953 #endif /* VREPRINT */
955 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
958 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
959 #endif /* VDISCARD */
961 if (tty_out
->flow_control
)
964 tty
.main
.c_cc
[VSTART
] = '\021';
967 tty
.main
.c_cc
[VSTOP
] = '\023';
973 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
976 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
981 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
982 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
983 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
984 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
985 if (tty_out
->flow_control
)
988 tty
.main
.c_cc
[VSTART
] = '\021';
991 tty
.main
.c_cc
[VSTOP
] = '\023';
994 /* Also, PTY overloads NUL and BREAK.
995 don't ignore break, but don't signal either, so it looks like NUL.
996 This really serves a purpose only if running in an XTERM window
997 or via TELNET or the like, but does no harm elsewhere. */
998 tty
.main
.c_iflag
&= ~IGNBRK
;
999 tty
.main
.c_iflag
&= ~BRKINT
;
1001 #endif /* not DOS_NT */
1003 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1004 if (!tty_out
->term_initted
)
1005 internal_terminal_init ();
1006 dos_ttraw (tty_out
);
1009 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1011 /* This code added to insure that, if flow-control is not to be used,
1012 we have an unlocked terminal at the start. */
1015 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1018 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1021 #if !defined (DOS_NT)
1023 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1028 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1029 if (interrupt_input
)
1031 old_fcntl_owner
[fileno (tty_out
->input
)] =
1032 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1033 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1034 init_sigio (fileno (tty_out
->input
));
1036 if (gpm_tty
== tty_out
)
1038 /* Arrange for mouse events to give us SIGIO signals. */
1039 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1040 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1041 init_sigio (gpm_fd
);
1043 #endif /* HAVE_GPM */
1045 #endif /* F_GETOWN */
1046 #endif /* F_SETFL */
1049 /* This symbol is defined on recent USG systems.
1050 Someone says without this call USG won't really buffer the file
1051 even with a call to setbuf. */
1052 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1054 setbuf (tty_out
->output
, (char *) _sobuf
);
1057 if (tty_out
->terminal
->set_terminal_modes_hook
)
1058 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1060 if (!tty_out
->term_initted
)
1062 Lisp_Object tail
, frame
;
1063 FOR_EACH_FRAME (tail
, frame
)
1065 /* XXX This needs to be revised. */
1066 if (FRAME_TERMCAP_P (XFRAME (frame
))
1067 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1068 init_frame_faces (XFRAME (frame
));
1072 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1074 /* We used to call "direct_output_forward_char(0)" here,
1075 but it's not clear why, since it may not do anything anyway. */
1079 Lisp_Object tail
, frame
;
1081 FOR_EACH_FRAME (tail
, frame
)
1083 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1084 || FRAME_MSDOS_P (XFRAME (frame
)))
1085 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1086 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1090 tty_out
->term_initted
= 1;
1093 /* Return nonzero if safe to use tabs in output.
1094 At the time this is called, init_sys_modes has not been done yet. */
1097 tabs_safe_p (int fd
)
1099 struct emacs_tty etty
;
1101 emacs_get_tty (fd
, &etty
);
1104 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1105 #else /* not TABDLY */
1107 #endif /* not TABDLY */
1113 /* Get terminal size from system.
1114 Store number of lines into *HEIGHTP and width into *WIDTHP.
1115 We store 0 if there's no valid information. */
1118 get_tty_size (int fd
, int *widthp
, int *heightp
)
1120 #if defined TIOCGWINSZ
1123 struct winsize size
;
1125 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1126 *widthp
= *heightp
= 0;
1129 *widthp
= size
.ws_col
;
1130 *heightp
= size
.ws_row
;
1133 #elif defined TIOCGSIZE
1135 /* SunOS - style. */
1136 struct ttysize size
;
1138 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1139 *widthp
= *heightp
= 0;
1142 *widthp
= size
.ts_cols
;
1143 *heightp
= size
.ts_lines
;
1146 #elif defined WINDOWSNT
1148 CONSOLE_SCREEN_BUFFER_INFO info
;
1149 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1151 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1152 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1155 *widthp
= *heightp
= 0;
1159 *widthp
= ScreenCols ();
1160 *heightp
= ScreenRows ();
1162 #else /* system doesn't know size */
1170 /* Set the logical window size associated with descriptor FD
1171 to HEIGHT and WIDTH. This is used mainly with ptys. */
1174 set_window_size (int fd
, int height
, int width
)
1179 struct winsize size
;
1180 size
.ws_row
= height
;
1181 size
.ws_col
= width
;
1183 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1184 return 0; /* error */
1191 /* SunOS - style. */
1192 struct ttysize size
;
1193 size
.ts_lines
= height
;
1194 size
.ts_cols
= width
;
1196 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1202 #endif /* not SunOS-style */
1203 #endif /* not BSD-style */
1208 /* Prepare all terminal devices for exiting Emacs. */
1211 reset_all_sys_modes (void)
1213 struct tty_display_info
*tty
;
1214 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1215 reset_sys_modes (tty
);
1218 /* Prepare the terminal for closing it; move the cursor to the
1219 bottom of the frame, turn off interrupt-driven I/O, etc. */
1222 reset_sys_modes (struct tty_display_info
*tty_out
)
1229 if (!tty_out
->term_initted
)
1232 if (!tty_out
->output
)
1233 return; /* The tty is suspended. */
1235 /* Go to and clear the last line of the terminal. */
1237 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1239 /* Code adapted from tty_clear_end_of_line. */
1240 if (tty_out
->TS_clr_line
)
1242 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1245 { /* have to do it the hard way */
1247 tty_turn_off_insert (tty_out
);
1249 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1251 fputc (' ', tty_out
->output
);
1255 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1256 fflush (tty_out
->output
);
1258 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1259 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1262 /* Avoid possible loss of output when changing terminal modes. */
1263 fsync (fileno (tty_out
->output
));
1267 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1268 if (interrupt_input
)
1270 reset_sigio (fileno (tty_out
->input
));
1271 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1272 old_fcntl_owner
[fileno (tty_out
->input
)]);
1274 #endif /* F_SETOWN */
1276 fcntl (fileno (tty_out
->input
), F_SETFL
,
1277 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1279 #endif /* F_SETFL */
1281 if (tty_out
->old_tty
)
1282 while (emacs_set_tty (fileno (tty_out
->input
),
1283 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1286 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1294 /* Set up the proper status flags for use of a pty. */
1299 /* I'm told that TOICREMOTE does not mean control chars
1300 "can't be sent" but rather that they don't have
1301 input-editing or signaling effects.
1302 That should be good, because we have other ways
1303 to do those things in Emacs.
1304 However, telnet mode seems not to work on 4.2.
1305 So TIOCREMOTE is turned off now. */
1307 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1308 will hang. In particular, the "timeout" feature (which
1309 causes a read to return if there is no data available)
1310 does this. Also it is known that telnet mode will hang
1311 in such a way that Emacs must be stopped (perhaps this
1312 is the same problem).
1314 If TIOCREMOTE is turned off, then there is a bug in
1315 hp-ux which sometimes loses data. Apparently the
1316 code which blocks the master process when the internal
1317 buffer fills up does not work. Other than this,
1318 though, everything else seems to work fine.
1320 Since the latter lossage is more benign, we may as well
1321 lose that way. -- cph */
1323 #if defined (UNIX98_PTYS)
1326 ioctl (fd
, FIONBIO
, &on
);
1331 #endif /* HAVE_PTYS */
1334 #include <sys/socket.h>
1336 #endif /* HAVE_SOCKETS */
1339 #ifndef HAVE_H_ERRNO
1342 #endif /* TRY_AGAIN */
1345 init_system_name (void)
1347 #ifndef HAVE_GETHOSTNAME
1350 Vsystem_name
= build_string (uts
.nodename
);
1351 #else /* HAVE_GETHOSTNAME */
1352 unsigned int hostname_size
= 256;
1353 char *hostname
= alloca (hostname_size
);
1355 /* Try to get the host name; if the buffer is too short, try
1356 again. Apparently, the only indication gethostname gives of
1357 whether the buffer was large enough is the presence or absence
1358 of a '\0' in the string. Eech. */
1361 gethostname (hostname
, hostname_size
- 1);
1362 hostname
[hostname_size
- 1] = '\0';
1364 /* Was the buffer large enough for the '\0'? */
1365 if (strlen (hostname
) < hostname_size
- 1)
1368 hostname_size
<<= 1;
1369 hostname
= alloca (hostname_size
);
1372 /* Turn the hostname into the official, fully-qualified hostname.
1373 Don't do this if we're going to dump; this can confuse system
1374 libraries on some machines and make the dumped emacs core dump. */
1377 #endif /* not CANNOT_DUMP */
1378 if (! strchr (hostname
, '.'))
1381 #ifdef HAVE_GETADDRINFO
1382 struct addrinfo
*res
;
1383 struct addrinfo hints
;
1386 memset (&hints
, 0, sizeof (hints
));
1387 hints
.ai_socktype
= SOCK_STREAM
;
1388 hints
.ai_flags
= AI_CANONNAME
;
1390 for (count
= 0;; count
++)
1392 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1393 || ret
!= EAI_AGAIN
)
1398 Fsleep_for (make_number (1), Qnil
);
1403 struct addrinfo
*it
= res
;
1406 char *fqdn
= it
->ai_canonname
;
1407 if (fqdn
&& strchr (fqdn
, '.')
1408 && strcmp (fqdn
, "localhost.localdomain") != 0)
1414 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1415 strcpy (hostname
, it
->ai_canonname
);
1419 #else /* !HAVE_GETADDRINFO */
1421 for (count
= 0;; count
++)
1427 hp
= gethostbyname (hostname
);
1429 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1436 Fsleep_for (make_number (1), Qnil
);
1441 char *fqdn
= (char *) hp
->h_name
;
1443 if (!strchr (fqdn
, '.'))
1445 /* We still don't have a fully qualified domain name.
1446 Try to find one in the list of alternate names */
1447 char **alias
= hp
->h_aliases
;
1449 && (!strchr (*alias
, '.')
1450 || !strcmp (*alias
, "localhost.localdomain")))
1457 #endif /* !HAVE_GETADDRINFO */
1459 #endif /* HAVE_SOCKETS */
1460 Vsystem_name
= build_string (hostname
);
1461 #endif /* HAVE_GETHOSTNAME */
1464 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1465 if (*p
== ' ' || *p
== '\t')
1470 /* POSIX signals support - DJB */
1471 /* Anyone with POSIX signals should have ANSI C declarations */
1473 sigset_t empty_mask
;
1478 sys_signal (int signal_number
, signal_handler_t action
)
1480 struct sigaction new_action
, old_action
;
1481 sigemptyset (&new_action
.sa_mask
);
1482 new_action
.sa_handler
= action
;
1483 new_action
.sa_flags
= 0;
1484 #if defined (SA_RESTART)
1485 /* Emacs mostly works better with restartable system services. If this
1486 flag exists, we probably want to turn it on here.
1487 However, on some systems (only hpux11 at present) this resets the
1488 timeout of `select' which means that `select' never finishes if
1489 it keeps getting signals.
1490 We define BROKEN_SA_RESTART on those systems. */
1491 /* It's not clear why the comment above says "mostly works better". --Stef
1492 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1493 for pending input so we need long-running syscalls to be interrupted
1494 after a signal that sets the interrupt_input_pending flag. */
1495 /* Non-interactive keyboard input goes through stdio, where we always
1496 want restartable system calls. */
1497 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1500 new_action
.sa_flags
= SA_RESTART
;
1502 sigaction (signal_number
, &new_action
, &old_action
);
1503 return (old_action
.sa_handler
);
1506 #endif /* WINDOWSNT */
1509 /* If we're compiling with GCC, we don't need this function, since it
1510 can be written as a macro. */
1512 sys_sigmask (int sig
)
1515 sigemptyset (&mask
);
1516 sigaddset (&mask
, sig
);
1521 /* I'd like to have these guys return pointers to the mask storage in here,
1522 but there'd be trouble if the code was saving multiple masks. I'll be
1523 safe and pass the structure. It normally won't be more than 2 bytes
1527 sys_sigblock (sigset_t new_mask
)
1530 pthread_sigmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1535 sys_sigunblock (sigset_t new_mask
)
1538 pthread_sigmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1543 sys_sigsetmask (sigset_t new_mask
)
1546 pthread_sigmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1551 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1552 static char *my_sys_siglist
[NSIG
];
1556 # define sys_siglist my_sys_siglist
1562 sigemptyset (&empty_mask
);
1564 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1568 sys_siglist
[SIGABRT
] = "Aborted";
1571 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1574 sys_siglist
[SIGALRM
] = "Alarm clock";
1577 sys_siglist
[SIGBUS
] = "Bus error";
1580 sys_siglist
[SIGCLD
] = "Child status changed";
1583 sys_siglist
[SIGCHLD
] = "Child status changed";
1586 sys_siglist
[SIGCONT
] = "Continued";
1589 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1592 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1595 sys_siglist
[SIGEMT
] = "Emulation trap";
1598 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1601 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1604 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1607 sys_siglist
[SIGHUP
] = "Hangup";
1610 sys_siglist
[SIGILL
] = "Illegal instruction";
1613 sys_siglist
[SIGINT
] = "Interrupt";
1616 sys_siglist
[SIGIO
] = "I/O possible";
1619 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1622 sys_siglist
[SIGIOT
] = "IOT trap";
1625 sys_siglist
[SIGKILL
] = "Killed";
1628 sys_siglist
[SIGLOST
] = "Resource lost";
1631 sys_siglist
[SIGLWP
] = "SIGLWP";
1634 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1637 sys_siglist
[SIGWIND
] = "SIGPHONE";
1640 sys_siglist
[SIGPIPE
] = "Broken pipe";
1643 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1646 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1649 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1652 sys_siglist
[SIGPWR
] = "Power-fail restart";
1655 sys_siglist
[SIGQUIT
] = "Quit";
1658 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1661 sys_siglist
[SIGSAK
] = "Secure attention";
1664 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1667 sys_siglist
[SIGSOUND
] = "Sound completed";
1670 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1673 sys_siglist
[SIGSTP
] = "Stopped (user)";
1676 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1679 sys_siglist
[SIGTERM
] = "Terminated";
1682 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1685 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1688 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1691 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1694 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1697 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1700 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1703 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1706 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1709 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1712 sys_siglist
[SIGWINCH
] = "Window size changed";
1715 sys_siglist
[SIGWIND
] = "SIGWIND";
1718 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1721 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1724 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1733 /* Figure out how many bits the system's random number generator uses.
1734 `random' and `lrand48' are assumed to return 31 usable bits.
1735 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1736 so we'll shift it and treat it like the 15-bit USG `rand'. */
1740 # define RAND_BITS 31
1741 # else /* !HAVE_RANDOM */
1742 # ifdef HAVE_LRAND48
1743 # define RAND_BITS 31
1744 # define random lrand48
1745 # else /* !HAVE_LRAND48 */
1746 # define RAND_BITS 15
1747 # if RAND_MAX == 32767
1748 # define random rand
1749 # else /* RAND_MAX != 32767 */
1750 # if RAND_MAX == 2147483647
1751 # define random() (rand () >> 16)
1752 # else /* RAND_MAX != 2147483647 */
1754 # define random rand
1756 # define random() (rand () >> 16)
1758 # endif /* RAND_MAX != 2147483647 */
1759 # endif /* RAND_MAX != 32767 */
1760 # endif /* !HAVE_LRAND48 */
1761 # endif /* !HAVE_RANDOM */
1762 #endif /* !RAND_BITS */
1765 seed_random (long int arg
)
1768 srandom ((unsigned int)arg
);
1770 # ifdef HAVE_LRAND48
1773 srand ((unsigned int)arg
);
1779 * Return a nonnegative random integer out of whatever we've got.
1780 * It contains enough bits to make a random (signed) Emacs fixnum.
1781 * This suffices even for a 64-bit architecture with a 15-bit rand.
1788 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1789 val
= (random () ^ (val
<< RAND_BITS
)
1790 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1791 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1792 return val
& INTMASK
;
1795 #ifndef HAVE_SNPRINTF
1796 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1798 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1800 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1801 ptrdiff_t nbytes
= size
- 1;
1806 va_start (ap
, format
);
1807 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1811 if (nbytes
== size
- 1)
1813 /* Calculate the length of the string that would have been created
1814 had the buffer been large enough. */
1815 char stackbuf
[4000];
1817 ptrdiff_t bsize
= sizeof stackbuf
;
1818 va_start (ap
, format
);
1819 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1825 if (INT_MAX
< nbytes
)
1839 emacs_open (const char *path
, int oflag
, int mode
)
1841 register int rtnval
;
1843 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1844 && (errno
== EINTR
))
1850 emacs_close (int fd
)
1853 register int rtnval
;
1855 while ((rtnval
= close (fd
)) == -1
1856 && (errno
== EINTR
))
1859 /* If close is interrupted SunOS 4.1 may or may not have closed the
1860 file descriptor. If it did the second close will fail with
1861 errno = EBADF. That means we have succeeded. */
1862 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1868 /* Maximum number of bytes to read or write in a single system call.
1869 This works around a serious bug in Linux kernels before 2.6.16; see
1870 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1871 It's likely to work around similar bugs in other operating systems, so do it
1872 on all platforms. Round INT_MAX down to a page size, with the conservative
1873 assumption that page sizes are at most 2**18 bytes (any kernel with a
1874 page size larger than that shouldn't have the bug). */
1875 #ifndef MAX_RW_COUNT
1876 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1879 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1880 Return the number of bytes read, which might be less than NBYTE.
1881 On error, set errno and return -1. */
1883 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1885 register ssize_t rtnval
;
1887 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1888 passes a size that large to emacs_read. */
1890 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1891 && (errno
== EINTR
))
1896 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1897 or if a partial write occurs. Return the number of bytes written, setting
1898 errno if this is less than NBYTE. */
1900 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1903 ptrdiff_t bytes_written
;
1909 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1916 /* I originally used `QUIT' but that might causes files to
1917 be truncated if you hit C-g in the middle of it. --Stef */
1918 process_pending_signals ();
1928 bytes_written
+= rtnval
;
1931 return (bytes_written
);
1934 static struct allocator
const emacs_norealloc_allocator
=
1935 { xmalloc
, NULL
, xfree
, memory_full
};
1937 /* Get the symbolic link value of FILENAME. Return a pointer to a
1938 NUL-terminated string. If readlink fails, return NULL and set
1939 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1940 Otherwise, allocate memory and return a pointer to that memory. If
1941 memory allocation fails, diagnose and fail without returning. If
1942 successful, store the length of the symbolic link into *LINKLEN. */
1944 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1946 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1947 &emacs_norealloc_allocator
, careadlinkatcwd
);
1952 * All of the following are for USG.
1954 * On USG systems the system calls are INTERRUPTIBLE by signals
1955 * that the user program has elected to catch. Thus the system call
1956 * must be retried in these cases. To handle this without massive
1957 * changes in the source code, we remap the standard system call names
1958 * to names for our own functions in sysdep.c that do the system call
1959 * with retries. Actually, for portability reasons, it is good
1960 * programming practice, as this example shows, to limit all actual
1961 * system calls to a single occurrence in the source. Sure, this
1962 * adds an extra level of function call overhead but it is almost
1963 * always negligible. Fred Fish, Unisoft Systems Inc.
1967 * Warning, this function may not duplicate 4.2 action properly
1968 * under error conditions.
1974 /* In 4.1, param.h fails to define this. */
1975 #define MAXPATHLEN 1024
1979 getwd (char *pathname
)
1981 char *npath
, *spath
;
1982 extern char *getcwd (char *, size_t);
1984 BLOCK_INPUT
; /* getcwd uses malloc */
1985 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1991 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1992 up to first slash. Should be harmless on other systems. */
1993 while (*npath
&& *npath
!= '/')
1995 strcpy (pathname
, npath
);
1996 free (spath
); /* getcwd uses malloc */
2001 #endif /* HAVE_GETWD */
2004 * This function will go away as soon as all the stubs fixed. (fnf)
2008 croak (char *badfunc
)
2010 printf ("%s not yet implemented\r\n", badfunc
);
2011 reset_all_sys_modes ();
2017 /* Directory routines for systems that don't have them. */
2019 #ifdef HAVE_DIRENT_H
2023 #if !defined (HAVE_CLOSEDIR)
2026 closedir (DIR *dirp
/* stream from opendir */)
2030 rtnval
= emacs_close (dirp
->dd_fd
);
2031 xfree ((char *) dirp
);
2035 #endif /* not HAVE_CLOSEDIR */
2036 #endif /* HAVE_DIRENT_H */
2039 /* Return a struct timeval that is roughly equivalent to T.
2040 Use the least timeval not less than T.
2041 Return an extremal value if the result would overflow. */
2043 make_timeval (EMACS_TIME t
)
2046 tv
.tv_sec
= t
.tv_sec
;
2047 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2049 if (t
.tv_nsec
% 1000 != 0)
2051 if (tv
.tv_usec
< 999999)
2053 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2063 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2064 ATIME and MTIME, respectively.
2065 FD must be either negative -- in which case it is ignored --
2066 or a file descriptor that is open on FILE.
2067 If FD is nonnegative, then FILE can be NULL. */
2069 set_file_times (int fd
, const char *filename
,
2070 EMACS_TIME atime
, EMACS_TIME mtime
)
2072 struct timespec timespec
[2];
2073 timespec
[0] = atime
;
2074 timespec
[1] = mtime
;
2075 return fdutimens (fd
, filename
, timespec
);
2078 /* mkdir and rmdir functions, for systems which don't have them. */
2082 * Written by Robert Rother, Mariah Corporation, August 1985.
2084 * If you want it, it's yours. All I ask in return is that if you
2085 * figure out how to do this in a Bourne Shell script you send me
2087 * sdcsvax!rmr or rmr@uscd
2089 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2090 * subroutine. 11Mar86; hoptoad!gnu
2092 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2093 * subroutine didn't return EEXIST. It does now.
2100 mkdir (char *dpath
, int dmode
)
2104 struct stat statbuf
;
2106 if (stat (dpath
, &statbuf
) == 0)
2108 errno
= EEXIST
; /* Stat worked, so it already exists */
2112 /* If stat fails for a reason other than non-existence, return error */
2113 if (errno
!= ENOENT
)
2116 synch_process_alive
= 1;
2117 switch (cpid
= fork ())
2120 case -1: /* Error in fork */
2121 return (-1); /* Errno is set already */
2123 case 0: /* Child process */
2125 * Cheap hack to set mode of new directory. Since this
2126 * child process is going away anyway, we zap its umask.
2127 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2128 * directory. Does anybody care?
2130 status
= umask (0); /* Get current umask */
2131 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2132 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2139 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2140 _exit (-1); /* Can't exec /bin/mkdir */
2142 default: /* Parent process */
2143 wait_for_termination (cpid
);
2146 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2147 || synch_process_termsig
!= 0)
2149 errno
= EIO
; /* We don't know why, but */
2150 return -1; /* /bin/mkdir failed */
2155 #endif /* not HAVE_MKDIR */
2161 int cpid
, status
, fd
;
2162 struct stat statbuf
;
2164 if (stat (dpath
, &statbuf
) != 0)
2166 /* Stat just set errno. We don't have to */
2170 synch_process_alive
= 1;
2171 switch (cpid
= fork ())
2174 case -1: /* Error in fork */
2175 return (-1); /* Errno is set already */
2177 case 0: /* Child process */
2178 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2185 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2186 _exit (-1); /* Can't exec /bin/rmdir */
2188 default: /* Parent process */
2189 wait_for_termination (cpid
);
2192 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2193 || synch_process_termsig
!= 0)
2195 errno
= EIO
; /* We don't know why, but */
2196 return -1; /* /bin/rmdir failed */
2201 #endif /* !HAVE_RMDIR */
2204 #ifndef HAVE_STRSIGNAL
2206 strsignal (int code
)
2210 if (0 <= code
&& code
< NSIG
)
2212 /* Cast to suppress warning if the table has const char *. */
2213 signame
= (char *) sys_siglist
[code
];
2218 #endif /* HAVE_STRSIGNAL */
2221 /* For make-serial-process */
2223 serial_open (char *port
)
2227 fd
= emacs_open ((char*) port
,
2240 error ("Could not open %s: %s",
2241 port
, emacs_strerror (errno
));
2244 ioctl (fd
, TIOCEXCL
, (char *) 0);
2250 #if !defined (HAVE_CFMAKERAW)
2251 /* Workaround for targets which are missing cfmakeraw. */
2252 /* Pasted from man page. */
2254 cfmakeraw (struct termios
*termios_p
)
2256 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2257 termios_p
->c_oflag
&= ~OPOST
;
2258 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2259 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2260 termios_p
->c_cflag
|= CS8
;
2262 #endif /* !defined (HAVE_CFMAKERAW */
2264 #if !defined (HAVE_CFSETSPEED)
2265 /* Workaround for targets which are missing cfsetspeed. */
2267 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2269 return (cfsetispeed (termios_p
, vitesse
)
2270 + cfsetospeed (termios_p
, vitesse
));
2274 /* For serial-process-configure */
2276 serial_configure (struct Lisp_Process
*p
,
2277 Lisp_Object contact
)
2279 Lisp_Object childp2
= Qnil
;
2280 Lisp_Object tem
= Qnil
;
2281 struct termios attr
;
2283 char summary
[4] = "???"; /* This usually becomes "8N1". */
2285 childp2
= Fcopy_sequence (p
->childp
);
2287 /* Read port attributes and prepare default configuration. */
2288 err
= tcgetattr (p
->outfd
, &attr
);
2290 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2292 #if defined (CLOCAL)
2293 attr
.c_cflag
|= CLOCAL
;
2296 attr
.c_cflag
|= CREAD
;
2299 /* Configure speed. */
2300 if (!NILP (Fplist_member (contact
, QCspeed
)))
2301 tem
= Fplist_get (contact
, QCspeed
);
2303 tem
= Fplist_get (p
->childp
, QCspeed
);
2305 err
= cfsetspeed (&attr
, XINT (tem
));
2307 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2308 emacs_strerror (errno
));
2309 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2311 /* Configure bytesize. */
2312 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2313 tem
= Fplist_get (contact
, QCbytesize
);
2315 tem
= Fplist_get (p
->childp
, QCbytesize
);
2317 tem
= make_number (8);
2319 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2320 error (":bytesize must be nil (8), 7, or 8");
2321 summary
[0] = XINT (tem
) + '0';
2322 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2323 attr
.c_cflag
&= ~CSIZE
;
2324 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2326 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2327 if (XINT (tem
) != 8)
2328 error ("Bytesize cannot be changed");
2330 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2332 /* Configure parity. */
2333 if (!NILP (Fplist_member (contact
, QCparity
)))
2334 tem
= Fplist_get (contact
, QCparity
);
2336 tem
= Fplist_get (p
->childp
, QCparity
);
2337 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2338 error (":parity must be nil (no parity), `even', or `odd'");
2339 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2340 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2341 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2346 else if (EQ (tem
, Qeven
))
2349 attr
.c_cflag
|= PARENB
;
2350 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2352 else if (EQ (tem
, Qodd
))
2355 attr
.c_cflag
|= (PARENB
| PARODD
);
2356 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2359 /* Don't error on no parity, which should be set by cfmakeraw. */
2361 error ("Parity cannot be configured");
2363 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2365 /* Configure stopbits. */
2366 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2367 tem
= Fplist_get (contact
, QCstopbits
);
2369 tem
= Fplist_get (p
->childp
, QCstopbits
);
2371 tem
= make_number (1);
2373 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2374 error (":stopbits must be nil (1 stopbit), 1, or 2");
2375 summary
[2] = XINT (tem
) + '0';
2376 #if defined (CSTOPB)
2377 attr
.c_cflag
&= ~CSTOPB
;
2378 if (XINT (tem
) == 2)
2379 attr
.c_cflag
|= CSTOPB
;
2381 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2382 if (XINT (tem
) != 1)
2383 error ("Stopbits cannot be configured");
2385 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2387 /* Configure flowcontrol. */
2388 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2389 tem
= Fplist_get (contact
, QCflowcontrol
);
2391 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2392 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2393 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2394 #if defined (CRTSCTS)
2395 attr
.c_cflag
&= ~CRTSCTS
;
2397 #if defined (CNEW_RTSCTS)
2398 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2400 #if defined (IXON) && defined (IXOFF)
2401 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2405 /* Already configured. */
2407 else if (EQ (tem
, Qhw
))
2409 #if defined (CRTSCTS)
2410 attr
.c_cflag
|= CRTSCTS
;
2411 #elif defined (CNEW_RTSCTS)
2412 attr
.c_cflag
|= CNEW_RTSCTS
;
2414 error ("Hardware flowcontrol (RTS/CTS) not supported");
2417 else if (EQ (tem
, Qsw
))
2419 #if defined (IXON) && defined (IXOFF)
2420 attr
.c_iflag
|= (IXON
| IXOFF
);
2422 error ("Software flowcontrol (XON/XOFF) not supported");
2425 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2427 /* Activate configuration. */
2428 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2430 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2432 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2433 p
->childp
= childp2
;
2436 #endif /* not DOS_NT */
2438 /* System depended enumeration of and access to system processes a-la ps(1). */
2442 /* Process enumeration and access via /proc. */
2445 list_system_processes (void)
2447 Lisp_Object procdir
, match
, proclist
, next
;
2448 struct gcpro gcpro1
, gcpro2
;
2449 register Lisp_Object tail
;
2451 GCPRO2 (procdir
, match
);
2452 /* For every process on the system, there's a directory in the
2453 "/proc" pseudo-directory whose name is the numeric ID of that
2455 procdir
= build_string ("/proc");
2456 match
= build_string ("[0-9]+");
2457 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2459 /* `proclist' gives process IDs as strings. Destructively convert
2460 each string into a number. */
2461 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2464 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2468 /* directory_files_internal returns the files in reverse order; undo
2470 proclist
= Fnreverse (proclist
);
2474 #elif defined BSD_SYSTEM
2477 list_system_processes (void)
2479 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2480 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2482 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2485 struct kinfo_proc
*procs
;
2488 struct gcpro gcpro1
;
2489 Lisp_Object proclist
= Qnil
;
2491 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2494 procs
= xmalloc (len
);
2495 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2502 len
/= sizeof (struct kinfo_proc
);
2503 for (i
= 0; i
< len
; i
++)
2505 #if defined DARWIN_OS || defined __NetBSD__
2506 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2507 #elif defined __OpenBSD__
2508 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2510 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2520 /* The WINDOWSNT implementation is in w32.c.
2521 The MSDOS implementation is in dosfns.c. */
2522 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2525 list_system_processes (void)
2530 #endif /* !defined (WINDOWSNT) */
2534 time_from_jiffies (unsigned long long tval
, long hz
)
2536 unsigned long long s
= tval
/ hz
;
2537 unsigned long long frac
= tval
% hz
;
2540 if (TYPE_MAXIMUM (time_t) < s
)
2542 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2543 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2544 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2547 /* This is reachable only in the unlikely case that HZ * HZ
2548 exceeds ULLONG_MAX. It calculates an approximation that is
2549 guaranteed to be in range. */
2550 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2551 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2552 ns
= frac
/ hz_per_ns
;
2555 return make_emacs_time (s
, ns
);
2559 ltime_from_jiffies (unsigned long long tval
, long hz
)
2561 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2562 return make_lisp_time (t
);
2569 EMACS_TIME up
= make_emacs_time (0, 0);
2572 fup
= fopen ("/proc/uptime", "r");
2576 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2577 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2579 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2580 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2581 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2584 if (TYPE_MAXIMUM (time_t) < upsec
)
2586 upsec
= TYPE_MAXIMUM (time_t);
2587 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2591 int upfraclen
= upfrac_end
- upfrac_start
;
2592 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2594 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2596 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2598 up
= make_emacs_time (upsec
, upfrac
);
2607 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2608 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2611 procfs_ttyname (int rdev
)
2614 char name
[PATH_MAX
];
2617 fdev
= fopen ("/proc/tty/drivers", "r");
2622 unsigned long minor_beg
, minor_end
;
2623 char minor
[25]; /* 2 32-bit numbers + dash */
2626 while (!feof (fdev
) && !ferror (fdev
))
2628 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2629 && major
== MAJOR (rdev
))
2631 minor_beg
= strtoul (minor
, &endp
, 0);
2633 minor_end
= minor_beg
;
2634 else if (*endp
== '-')
2635 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2639 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2641 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2649 return build_string (name
);
2652 static unsigned long
2653 procfs_get_total_memory (void)
2656 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2659 fmem
= fopen ("/proc/meminfo", "r");
2663 unsigned long entry_value
;
2664 char entry_name
[20]; /* the longest I saw is 13+1 */
2666 while (!feof (fmem
) && !ferror (fmem
))
2668 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2669 && strcmp (entry_name
, "MemTotal:") == 0)
2671 retval
= entry_value
;
2682 system_process_attributes (Lisp_Object pid
)
2684 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2688 long clocks_per_sec
;
2690 char procbuf
[1025], *p
, *q
;
2693 static char const default_cmd
[] = "???";
2694 const char *cmd
= default_cmd
;
2695 int cmdsize
= sizeof default_cmd
- 1;
2696 char *cmdline
= NULL
;
2697 ptrdiff_t cmdline_size
;
2700 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2703 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2704 long priority
, niceness
, rss
;
2705 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2706 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2708 Lisp_Object attrs
= Qnil
;
2709 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2710 struct gcpro gcpro1
, gcpro2
;
2712 CHECK_NUMBER_OR_FLOAT (pid
);
2713 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2714 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2715 if (stat (procfn
, &st
) < 0)
2718 GCPRO2 (attrs
, decoded_cmd
);
2722 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2724 pw
= getpwuid (uid
);
2727 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2730 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2732 gr
= getgrgid (gid
);
2735 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2737 strcpy (fn
, procfn
);
2738 procfn_end
= fn
+ strlen (fn
);
2739 strcpy (procfn_end
, "/stat");
2740 fd
= emacs_open (fn
, O_RDONLY
, 0);
2741 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2743 procbuf
[nread
] = '\0';
2746 p
= strchr (p
, '(');
2749 q
= strrchr (p
+ 1, ')');
2759 /* Command name is encoded in locale-coding-system; decode it. */
2760 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2761 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2762 Vlocale_coding_system
, 0);
2763 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2767 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2769 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2770 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2771 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2772 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2773 &u_time
, &s_time
, &cutime
, &cstime
,
2774 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2779 state_str
[1] = '\0';
2780 tem
= build_string (state_str
);
2781 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2783 /* Stops GCC whining about limited range of data type. */
2788 thcount_eint
= thcount
;
2789 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2790 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2791 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2792 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2793 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2794 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2795 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2796 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2797 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2798 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2799 if (clocks_per_sec
< 0)
2800 clocks_per_sec
= 100;
2801 attrs
= Fcons (Fcons (Qutime
,
2802 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2804 attrs
= Fcons (Fcons (Qstime
,
2805 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2807 attrs
= Fcons (Fcons (Qtime
,
2808 ltime_from_jiffies (s_time
+ u_time
,
2811 attrs
= Fcons (Fcons (Qcutime
,
2812 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2814 attrs
= Fcons (Fcons (Qcstime
,
2815 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2817 attrs
= Fcons (Fcons (Qctime
,
2818 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2820 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2821 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2822 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2823 tnow
= current_emacs_time ();
2824 telapsed
= get_up_time ();
2825 tboot
= sub_emacs_time (tnow
, telapsed
);
2826 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2827 tstart
= add_emacs_time (tboot
, tstart
);
2828 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2829 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2830 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2831 telapsed
= sub_emacs_time (tnow
, tstart
);
2832 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2833 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2834 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2835 / EMACS_TIME_TO_DOUBLE (telapsed
));
2838 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2839 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2842 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2849 strcpy (procfn_end
, "/cmdline");
2850 fd
= emacs_open (fn
, O_RDONLY
, 0);
2854 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2856 if (emacs_read (fd
, &ch
, 1) != 1)
2859 if (isspace (c
) || c
== '\\')
2860 cmdline_size
++; /* for later quoting, see below */
2864 cmdline
= xmalloc (cmdline_size
+ 1);
2865 lseek (fd
, 0L, SEEK_SET
);
2867 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2868 cmdline
[nread
++] = '\0';
2871 /* Assigning zero to `nread' makes us skip the following
2872 two loops, assign zero to cmdline_size, and enter the
2873 following `if' clause that handles unknown command
2877 /* We don't want trailing null characters. */
2878 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2880 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2882 /* Escape-quote whitespace and backslashes. */
2883 if (isspace (*p
) || *p
== '\\')
2885 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2889 else if (*p
== '\0')
2892 cmdline_size
= nread
;
2896 cmdline_size
= cmdsize
+ 2;
2897 cmdline
= xmalloc (cmdline_size
+ 1);
2898 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2901 /* Command line is encoded in locale-coding-system; decode it. */
2902 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2903 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2904 Vlocale_coding_system
, 0);
2906 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2913 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2915 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2916 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2917 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2918 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2919 #undef _FILE_OFFSET_BITS
2921 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2926 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2927 #define _FILE_OFFSET_BITS 64
2928 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2930 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2933 system_process_attributes (Lisp_Object pid
)
2935 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2940 struct psinfo pinfo
;
2946 Lisp_Object attrs
= Qnil
;
2947 Lisp_Object decoded_cmd
, tem
;
2948 struct gcpro gcpro1
, gcpro2
;
2950 CHECK_NUMBER_OR_FLOAT (pid
);
2951 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2952 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2953 if (stat (procfn
, &st
) < 0)
2956 GCPRO2 (attrs
, decoded_cmd
);
2960 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2962 pw
= getpwuid (uid
);
2965 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2968 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2970 gr
= getgrgid (gid
);
2973 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2975 strcpy (fn
, procfn
);
2976 procfn_end
= fn
+ strlen (fn
);
2977 strcpy (procfn_end
, "/psinfo");
2978 fd
= emacs_open (fn
, O_RDONLY
, 0);
2980 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2982 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2983 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2984 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2988 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2989 state_str
[1] = '\0';
2990 tem
= build_string (state_str
);
2991 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2994 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2995 need to get a string from it. */
2997 /* FIXME: missing: Qtpgid */
3009 Are they available? */
3011 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3012 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3013 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3014 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3015 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3017 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3018 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3019 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3021 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3022 range 0 .. 2**15, representing 0.0 .. 1.0. */
3023 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3024 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3027 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3028 strlen (pinfo
.pr_fname
)),
3029 Vlocale_coding_system
, 0);
3030 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3032 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3033 strlen (pinfo
.pr_psargs
)),
3034 Vlocale_coding_system
, 0);
3035 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3045 #elif defined __FreeBSD__
3048 timeval_to_EMACS_TIME (struct timeval t
)
3050 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3054 make_lisp_timeval (struct timeval t
)
3056 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3060 system_process_attributes (Lisp_Object pid
)
3063 int pagesize
= getpagesize ();
3070 char args
[MAXPATHLEN
];
3073 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3074 struct kinfo_proc proc
;
3075 size_t proclen
= sizeof proc
;
3077 struct gcpro gcpro1
, gcpro2
;
3078 Lisp_Object attrs
= Qnil
;
3079 Lisp_Object decoded_comm
;
3081 CHECK_NUMBER_OR_FLOAT (pid
);
3082 CONS_TO_INTEGER (pid
, int, proc_id
);
3085 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3088 GCPRO2 (attrs
, decoded_comm
);
3090 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3093 pw
= getpwuid (proc
.ki_uid
);
3096 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3098 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3101 gr
= getgrgid (proc
.ki_svgid
);
3104 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3106 decoded_comm
= code_convert_string_norecord
3107 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3108 Vlocale_coding_system
, 0);
3110 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3112 char state
[2] = {'\0', '\0'};
3113 switch (proc
.ki_stat
)
3135 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3138 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3139 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3140 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3143 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3146 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3148 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3149 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3150 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3151 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3152 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3154 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3156 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3158 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3159 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3160 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3162 attrs
= Fcons (Fcons (Qcutime
,
3163 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3165 attrs
= Fcons (Fcons (Qcstime
,
3166 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3168 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3169 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3170 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3172 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3174 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3175 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3176 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3177 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3178 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3181 now
= current_emacs_time ();
3182 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3183 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3185 len
= sizeof fscale
;
3186 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3191 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3193 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3194 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3195 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3199 len
= sizeof npages
;
3200 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3202 double pmem
= (proc
.ki_flag
& P_INMEM
3203 ? 100.0 * proc
.ki_rssize
/ npages
3205 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3208 mib
[2] = KERN_PROC_ARGS
;
3210 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3213 for (i
= 0; i
< len
; i
++)
3215 if (! args
[i
] && i
< len
- 1)
3220 (code_convert_string_norecord
3221 (make_unibyte_string (args
, strlen (args
)),
3222 Vlocale_coding_system
, 0));
3224 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3231 /* The WINDOWSNT implementation is in w32.c.
3232 The MSDOS implementation is in dosfns.c. */
3233 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3236 system_process_attributes (Lisp_Object pid
)
3241 #endif /* !defined (WINDOWSNT) */