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 * Emulate rename using unlink/link. Note that this is
2005 * only partially correct. Also, doesn't enforce restriction
2006 * that files be of same type (regular->regular, dir->dir, etc).
2012 rename (const char *from
, const char *to
)
2014 if (access (from
, 0) == 0)
2017 if (link (from
, to
) == 0)
2018 if (unlink (from
) == 0)
2027 #if defined (HPUX) && !defined (HAVE_PERROR)
2029 /* HPUX curses library references perror, but as far as we know
2030 it won't be called. Anyway this definition will do for now. */
2036 #endif /* HPUX and not HAVE_PERROR */
2039 * This function will go away as soon as all the stubs fixed. (fnf)
2043 croak (char *badfunc
)
2045 printf ("%s not yet implemented\r\n", badfunc
);
2046 reset_all_sys_modes ();
2052 /* Directory routines for systems that don't have them. */
2054 #ifdef HAVE_DIRENT_H
2058 #if !defined (HAVE_CLOSEDIR)
2061 closedir (DIR *dirp
/* stream from opendir */)
2065 rtnval
= emacs_close (dirp
->dd_fd
);
2066 xfree ((char *) dirp
);
2070 #endif /* not HAVE_CLOSEDIR */
2071 #endif /* HAVE_DIRENT_H */
2074 /* Return a struct timeval that is roughly equivalent to T.
2075 Use the least timeval not less than T.
2076 Return an extremal value if the result would overflow. */
2078 make_timeval (EMACS_TIME t
)
2081 tv
.tv_sec
= t
.tv_sec
;
2082 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2084 if (t
.tv_nsec
% 1000 != 0)
2086 if (tv
.tv_usec
< 999999)
2088 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2098 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2099 ATIME and MTIME, respectively.
2100 FD must be either negative -- in which case it is ignored --
2101 or a file descriptor that is open on FILE.
2102 If FD is nonnegative, then FILE can be NULL. */
2104 set_file_times (int fd
, const char *filename
,
2105 EMACS_TIME atime
, EMACS_TIME mtime
)
2107 struct timespec timespec
[2];
2108 timespec
[0] = atime
;
2109 timespec
[1] = mtime
;
2110 return fdutimens (fd
, filename
, timespec
);
2113 /* mkdir and rmdir functions, for systems which don't have them. */
2117 * Written by Robert Rother, Mariah Corporation, August 1985.
2119 * If you want it, it's yours. All I ask in return is that if you
2120 * figure out how to do this in a Bourne Shell script you send me
2122 * sdcsvax!rmr or rmr@uscd
2124 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2125 * subroutine. 11Mar86; hoptoad!gnu
2127 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2128 * subroutine didn't return EEXIST. It does now.
2135 mkdir (char *dpath
, int dmode
)
2139 struct stat statbuf
;
2141 if (stat (dpath
, &statbuf
) == 0)
2143 errno
= EEXIST
; /* Stat worked, so it already exists */
2147 /* If stat fails for a reason other than non-existence, return error */
2148 if (errno
!= ENOENT
)
2151 synch_process_alive
= 1;
2152 switch (cpid
= fork ())
2155 case -1: /* Error in fork */
2156 return (-1); /* Errno is set already */
2158 case 0: /* Child process */
2160 * Cheap hack to set mode of new directory. Since this
2161 * child process is going away anyway, we zap its umask.
2162 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2163 * directory. Does anybody care?
2165 status
= umask (0); /* Get current umask */
2166 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2167 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2174 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2175 _exit (-1); /* Can't exec /bin/mkdir */
2177 default: /* Parent process */
2178 wait_for_termination (cpid
);
2181 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2182 || synch_process_termsig
!= 0)
2184 errno
= EIO
; /* We don't know why, but */
2185 return -1; /* /bin/mkdir failed */
2190 #endif /* not HAVE_MKDIR */
2196 int cpid
, status
, fd
;
2197 struct stat statbuf
;
2199 if (stat (dpath
, &statbuf
) != 0)
2201 /* Stat just set errno. We don't have to */
2205 synch_process_alive
= 1;
2206 switch (cpid
= fork ())
2209 case -1: /* Error in fork */
2210 return (-1); /* Errno is set already */
2212 case 0: /* Child process */
2213 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2220 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2221 _exit (-1); /* Can't exec /bin/rmdir */
2223 default: /* Parent process */
2224 wait_for_termination (cpid
);
2227 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2228 || synch_process_termsig
!= 0)
2230 errno
= EIO
; /* We don't know why, but */
2231 return -1; /* /bin/rmdir failed */
2236 #endif /* !HAVE_RMDIR */
2239 #ifndef HAVE_STRSIGNAL
2241 strsignal (int code
)
2245 if (0 <= code
&& code
< NSIG
)
2247 /* Cast to suppress warning if the table has const char *. */
2248 signame
= (char *) sys_siglist
[code
];
2253 #endif /* HAVE_STRSIGNAL */
2256 /* For make-serial-process */
2258 serial_open (char *port
)
2262 fd
= emacs_open ((char*) port
,
2275 error ("Could not open %s: %s",
2276 port
, emacs_strerror (errno
));
2279 ioctl (fd
, TIOCEXCL
, (char *) 0);
2285 #if !defined (HAVE_CFMAKERAW)
2286 /* Workaround for targets which are missing cfmakeraw. */
2287 /* Pasted from man page. */
2289 cfmakeraw (struct termios
*termios_p
)
2291 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2292 termios_p
->c_oflag
&= ~OPOST
;
2293 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2294 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2295 termios_p
->c_cflag
|= CS8
;
2297 #endif /* !defined (HAVE_CFMAKERAW */
2299 #if !defined (HAVE_CFSETSPEED)
2300 /* Workaround for targets which are missing cfsetspeed. */
2302 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2304 return (cfsetispeed (termios_p
, vitesse
)
2305 + cfsetospeed (termios_p
, vitesse
));
2309 /* For serial-process-configure */
2311 serial_configure (struct Lisp_Process
*p
,
2312 Lisp_Object contact
)
2314 Lisp_Object childp2
= Qnil
;
2315 Lisp_Object tem
= Qnil
;
2316 struct termios attr
;
2318 char summary
[4] = "???"; /* This usually becomes "8N1". */
2320 childp2
= Fcopy_sequence (p
->childp
);
2322 /* Read port attributes and prepare default configuration. */
2323 err
= tcgetattr (p
->outfd
, &attr
);
2325 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2327 #if defined (CLOCAL)
2328 attr
.c_cflag
|= CLOCAL
;
2331 attr
.c_cflag
|= CREAD
;
2334 /* Configure speed. */
2335 if (!NILP (Fplist_member (contact
, QCspeed
)))
2336 tem
= Fplist_get (contact
, QCspeed
);
2338 tem
= Fplist_get (p
->childp
, QCspeed
);
2340 err
= cfsetspeed (&attr
, XINT (tem
));
2342 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2343 emacs_strerror (errno
));
2344 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2346 /* Configure bytesize. */
2347 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2348 tem
= Fplist_get (contact
, QCbytesize
);
2350 tem
= Fplist_get (p
->childp
, QCbytesize
);
2352 tem
= make_number (8);
2354 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2355 error (":bytesize must be nil (8), 7, or 8");
2356 summary
[0] = XINT (tem
) + '0';
2357 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2358 attr
.c_cflag
&= ~CSIZE
;
2359 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2361 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2362 if (XINT (tem
) != 8)
2363 error ("Bytesize cannot be changed");
2365 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2367 /* Configure parity. */
2368 if (!NILP (Fplist_member (contact
, QCparity
)))
2369 tem
= Fplist_get (contact
, QCparity
);
2371 tem
= Fplist_get (p
->childp
, QCparity
);
2372 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2373 error (":parity must be nil (no parity), `even', or `odd'");
2374 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2375 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2376 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2381 else if (EQ (tem
, Qeven
))
2384 attr
.c_cflag
|= PARENB
;
2385 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2387 else if (EQ (tem
, Qodd
))
2390 attr
.c_cflag
|= (PARENB
| PARODD
);
2391 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2394 /* Don't error on no parity, which should be set by cfmakeraw. */
2396 error ("Parity cannot be configured");
2398 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2400 /* Configure stopbits. */
2401 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2402 tem
= Fplist_get (contact
, QCstopbits
);
2404 tem
= Fplist_get (p
->childp
, QCstopbits
);
2406 tem
= make_number (1);
2408 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2409 error (":stopbits must be nil (1 stopbit), 1, or 2");
2410 summary
[2] = XINT (tem
) + '0';
2411 #if defined (CSTOPB)
2412 attr
.c_cflag
&= ~CSTOPB
;
2413 if (XINT (tem
) == 2)
2414 attr
.c_cflag
|= CSTOPB
;
2416 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2417 if (XINT (tem
) != 1)
2418 error ("Stopbits cannot be configured");
2420 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2422 /* Configure flowcontrol. */
2423 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2424 tem
= Fplist_get (contact
, QCflowcontrol
);
2426 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2427 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2428 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2429 #if defined (CRTSCTS)
2430 attr
.c_cflag
&= ~CRTSCTS
;
2432 #if defined (CNEW_RTSCTS)
2433 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2435 #if defined (IXON) && defined (IXOFF)
2436 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2440 /* Already configured. */
2442 else if (EQ (tem
, Qhw
))
2444 #if defined (CRTSCTS)
2445 attr
.c_cflag
|= CRTSCTS
;
2446 #elif defined (CNEW_RTSCTS)
2447 attr
.c_cflag
|= CNEW_RTSCTS
;
2449 error ("Hardware flowcontrol (RTS/CTS) not supported");
2452 else if (EQ (tem
, Qsw
))
2454 #if defined (IXON) && defined (IXOFF)
2455 attr
.c_iflag
|= (IXON
| IXOFF
);
2457 error ("Software flowcontrol (XON/XOFF) not supported");
2460 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2462 /* Activate configuration. */
2463 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2465 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2467 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2468 p
->childp
= childp2
;
2471 #endif /* not DOS_NT */
2473 /* System depended enumeration of and access to system processes a-la ps(1). */
2477 /* Process enumeration and access via /proc. */
2480 list_system_processes (void)
2482 Lisp_Object procdir
, match
, proclist
, next
;
2483 struct gcpro gcpro1
, gcpro2
;
2484 register Lisp_Object tail
;
2486 GCPRO2 (procdir
, match
);
2487 /* For every process on the system, there's a directory in the
2488 "/proc" pseudo-directory whose name is the numeric ID of that
2490 procdir
= build_string ("/proc");
2491 match
= build_string ("[0-9]+");
2492 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2494 /* `proclist' gives process IDs as strings. Destructively convert
2495 each string into a number. */
2496 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2499 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2503 /* directory_files_internal returns the files in reverse order; undo
2505 proclist
= Fnreverse (proclist
);
2509 #elif defined BSD_SYSTEM
2512 list_system_processes (void)
2514 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2515 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2517 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2520 struct kinfo_proc
*procs
;
2523 struct gcpro gcpro1
;
2524 Lisp_Object proclist
= Qnil
;
2526 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2529 procs
= xmalloc (len
);
2530 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2537 len
/= sizeof (struct kinfo_proc
);
2538 for (i
= 0; i
< len
; i
++)
2540 #if defined DARWIN_OS || defined __NetBSD__
2541 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2542 #elif defined __OpenBSD__
2543 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2545 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2555 /* The WINDOWSNT implementation is in w32.c.
2556 The MSDOS implementation is in dosfns.c. */
2557 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2560 list_system_processes (void)
2565 #endif /* !defined (WINDOWSNT) */
2569 time_from_jiffies (unsigned long long tval
, long hz
)
2571 unsigned long long s
= tval
/ hz
;
2572 unsigned long long frac
= tval
% hz
;
2575 if (TYPE_MAXIMUM (time_t) < s
)
2577 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2578 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2579 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2582 /* This is reachable only in the unlikely case that HZ * HZ
2583 exceeds ULLONG_MAX. It calculates an approximation that is
2584 guaranteed to be in range. */
2585 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2586 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2587 ns
= frac
/ hz_per_ns
;
2590 return make_emacs_time (s
, ns
);
2594 ltime_from_jiffies (unsigned long long tval
, long hz
)
2596 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2597 return make_lisp_time (t
);
2604 EMACS_TIME up
= make_emacs_time (0, 0);
2607 fup
= fopen ("/proc/uptime", "r");
2611 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2612 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2614 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2615 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2616 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2619 if (TYPE_MAXIMUM (time_t) < upsec
)
2621 upsec
= TYPE_MAXIMUM (time_t);
2622 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2626 int upfraclen
= upfrac_end
- upfrac_start
;
2627 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2629 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2631 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2633 up
= make_emacs_time (upsec
, upfrac
);
2642 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2643 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2646 procfs_ttyname (int rdev
)
2649 char name
[PATH_MAX
];
2652 fdev
= fopen ("/proc/tty/drivers", "r");
2657 unsigned long minor_beg
, minor_end
;
2658 char minor
[25]; /* 2 32-bit numbers + dash */
2661 while (!feof (fdev
) && !ferror (fdev
))
2663 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2664 && major
== MAJOR (rdev
))
2666 minor_beg
= strtoul (minor
, &endp
, 0);
2668 minor_end
= minor_beg
;
2669 else if (*endp
== '-')
2670 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2674 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2676 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2684 return build_string (name
);
2687 static unsigned long
2688 procfs_get_total_memory (void)
2691 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2694 fmem
= fopen ("/proc/meminfo", "r");
2698 unsigned long entry_value
;
2699 char entry_name
[20]; /* the longest I saw is 13+1 */
2701 while (!feof (fmem
) && !ferror (fmem
))
2703 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2704 && strcmp (entry_name
, "MemTotal:") == 0)
2706 retval
= entry_value
;
2717 system_process_attributes (Lisp_Object pid
)
2719 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2723 long clocks_per_sec
;
2725 char procbuf
[1025], *p
, *q
;
2728 static char const default_cmd
[] = "???";
2729 const char *cmd
= default_cmd
;
2730 int cmdsize
= sizeof default_cmd
- 1;
2731 char *cmdline
= NULL
;
2732 ptrdiff_t cmdline_size
;
2735 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2738 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2739 long priority
, niceness
, rss
;
2740 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2741 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2743 Lisp_Object attrs
= Qnil
;
2744 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2745 struct gcpro gcpro1
, gcpro2
;
2747 CHECK_NUMBER_OR_FLOAT (pid
);
2748 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2749 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2750 if (stat (procfn
, &st
) < 0)
2753 GCPRO2 (attrs
, decoded_cmd
);
2757 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2759 pw
= getpwuid (uid
);
2762 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2765 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2767 gr
= getgrgid (gid
);
2770 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2772 strcpy (fn
, procfn
);
2773 procfn_end
= fn
+ strlen (fn
);
2774 strcpy (procfn_end
, "/stat");
2775 fd
= emacs_open (fn
, O_RDONLY
, 0);
2776 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2778 procbuf
[nread
] = '\0';
2781 p
= strchr (p
, '(');
2784 q
= strrchr (p
+ 1, ')');
2794 /* Command name is encoded in locale-coding-system; decode it. */
2795 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2796 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2797 Vlocale_coding_system
, 0);
2798 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2802 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2804 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2805 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2806 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2807 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2808 &u_time
, &s_time
, &cutime
, &cstime
,
2809 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2814 state_str
[1] = '\0';
2815 tem
= build_string (state_str
);
2816 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2818 /* Stops GCC whining about limited range of data type. */
2823 thcount_eint
= thcount
;
2824 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2825 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2826 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2827 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2828 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2829 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2830 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2831 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2832 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2833 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2834 if (clocks_per_sec
< 0)
2835 clocks_per_sec
= 100;
2836 attrs
= Fcons (Fcons (Qutime
,
2837 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2839 attrs
= Fcons (Fcons (Qstime
,
2840 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2842 attrs
= Fcons (Fcons (Qtime
,
2843 ltime_from_jiffies (s_time
+ u_time
,
2846 attrs
= Fcons (Fcons (Qcutime
,
2847 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2849 attrs
= Fcons (Fcons (Qcstime
,
2850 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2852 attrs
= Fcons (Fcons (Qctime
,
2853 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2855 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2856 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2857 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2858 tnow
= current_emacs_time ();
2859 telapsed
= get_up_time ();
2860 tboot
= sub_emacs_time (tnow
, telapsed
);
2861 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2862 tstart
= add_emacs_time (tboot
, tstart
);
2863 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2864 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2865 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2866 telapsed
= sub_emacs_time (tnow
, tstart
);
2867 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2868 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2869 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2870 / EMACS_TIME_TO_DOUBLE (telapsed
));
2873 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2874 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2877 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2884 strcpy (procfn_end
, "/cmdline");
2885 fd
= emacs_open (fn
, O_RDONLY
, 0);
2889 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2891 if (emacs_read (fd
, &ch
, 1) != 1)
2894 if (isspace (c
) || c
== '\\')
2895 cmdline_size
++; /* for later quoting, see below */
2899 cmdline
= xmalloc (cmdline_size
+ 1);
2900 lseek (fd
, 0L, SEEK_SET
);
2902 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2903 cmdline
[nread
++] = '\0';
2906 /* Assigning zero to `nread' makes us skip the following
2907 two loops, assign zero to cmdline_size, and enter the
2908 following `if' clause that handles unknown command
2912 /* We don't want trailing null characters. */
2913 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2915 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2917 /* Escape-quote whitespace and backslashes. */
2918 if (isspace (*p
) || *p
== '\\')
2920 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2924 else if (*p
== '\0')
2927 cmdline_size
= nread
;
2931 cmdline_size
= cmdsize
+ 2;
2932 cmdline
= xmalloc (cmdline_size
+ 1);
2933 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2936 /* Command line is encoded in locale-coding-system; decode it. */
2937 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2938 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2939 Vlocale_coding_system
, 0);
2941 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2948 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2950 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2951 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2952 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2953 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2954 #undef _FILE_OFFSET_BITS
2956 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2961 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2962 #define _FILE_OFFSET_BITS 64
2963 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2965 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2968 system_process_attributes (Lisp_Object pid
)
2970 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2975 struct psinfo pinfo
;
2981 Lisp_Object attrs
= Qnil
;
2982 Lisp_Object decoded_cmd
, tem
;
2983 struct gcpro gcpro1
, gcpro2
;
2985 CHECK_NUMBER_OR_FLOAT (pid
);
2986 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2987 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2988 if (stat (procfn
, &st
) < 0)
2991 GCPRO2 (attrs
, decoded_cmd
);
2995 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2997 pw
= getpwuid (uid
);
3000 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3003 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3005 gr
= getgrgid (gid
);
3008 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3010 strcpy (fn
, procfn
);
3011 procfn_end
= fn
+ strlen (fn
);
3012 strcpy (procfn_end
, "/psinfo");
3013 fd
= emacs_open (fn
, O_RDONLY
, 0);
3015 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3017 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3018 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3019 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3023 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3024 state_str
[1] = '\0';
3025 tem
= build_string (state_str
);
3026 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3029 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3030 need to get a string from it. */
3032 /* FIXME: missing: Qtpgid */
3044 Are they available? */
3046 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3047 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3048 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3049 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3050 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3052 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3053 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3054 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3056 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3057 range 0 .. 2**15, representing 0.0 .. 1.0. */
3058 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3059 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3062 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3063 strlen (pinfo
.pr_fname
)),
3064 Vlocale_coding_system
, 0);
3065 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3067 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3068 strlen (pinfo
.pr_psargs
)),
3069 Vlocale_coding_system
, 0);
3070 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3080 #elif defined __FreeBSD__
3083 timeval_to_EMACS_TIME (struct timeval t
)
3085 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3089 make_lisp_timeval (struct timeval t
)
3091 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3095 system_process_attributes (Lisp_Object pid
)
3098 int pagesize
= getpagesize ();
3105 char args
[MAXPATHLEN
];
3108 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3109 struct kinfo_proc proc
;
3110 size_t proclen
= sizeof proc
;
3112 struct gcpro gcpro1
, gcpro2
;
3113 Lisp_Object attrs
= Qnil
;
3114 Lisp_Object decoded_comm
;
3116 CHECK_NUMBER_OR_FLOAT (pid
);
3117 CONS_TO_INTEGER (pid
, int, proc_id
);
3120 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3123 GCPRO2 (attrs
, decoded_comm
);
3125 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3128 pw
= getpwuid (proc
.ki_uid
);
3131 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3133 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3136 gr
= getgrgid (proc
.ki_svgid
);
3139 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3141 decoded_comm
= code_convert_string_norecord
3142 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3143 Vlocale_coding_system
, 0);
3145 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3147 char state
[2] = {'\0', '\0'};
3148 switch (proc
.ki_stat
)
3170 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3173 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3174 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3175 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3178 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3181 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3183 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3184 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3185 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3186 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3187 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3189 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3191 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3193 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3194 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3195 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3197 attrs
= Fcons (Fcons (Qcutime
,
3198 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3200 attrs
= Fcons (Fcons (Qcstime
,
3201 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3203 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3204 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3205 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3207 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3209 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3210 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3211 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3212 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3213 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3216 now
= current_emacs_time ();
3217 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3218 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3220 len
= sizeof fscale
;
3221 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3226 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3228 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3229 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3230 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3234 len
= sizeof npages
;
3235 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3237 double pmem
= (proc
.ki_flag
& P_INMEM
3238 ? 100.0 * proc
.ki_rssize
/ npages
3240 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3243 mib
[2] = KERN_PROC_ARGS
;
3245 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3248 for (i
= 0; i
< len
; i
++)
3250 if (! args
[i
] && i
< len
- 1)
3255 (code_convert_string_norecord
3256 (make_unibyte_string (args
, strlen (args
)),
3257 Vlocale_coding_system
, 0));
3259 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3266 /* The WINDOWSNT implementation is in w32.c.
3267 The MSDOS implementation is in dosfns.c. */
3268 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3271 system_process_attributes (Lisp_Object pid
)
3276 #endif /* !defined (WINDOWSNT) */