1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2011
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>
37 #include "sysselect.h"
38 #include "blockinput.h"
42 #define write sys_write
47 #endif /* not WINDOWSNT */
49 #include <sys/types.h>
56 #define setpgrp setpgid
60 /* Get SI_SRPC_DOMAIN, if it is available. */
61 #ifdef HAVE_SYS_SYSTEMINFO_H
62 #include <sys/systeminfo.h>
65 #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"
109 #ifndef HAVE_STRUCT_UTIMBUF
110 /* We want to use utime rather than utimes, but we couldn't find the
111 structure declaration. We'll use the traditional one. */
119 static int emacs_get_tty (int, struct emacs_tty
*);
120 static int emacs_set_tty (int, struct emacs_tty
*, int);
121 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
122 static void croak (char *) NO_RETURN
;
125 /* Declare here, including term.h is problematic on some systems. */
126 extern void tputs (const char *, int, int (*)(int));
128 static const int baud_convert
[] =
130 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
131 1800, 2400, 4800, 9600, 19200, 38400
135 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
137 /* Return the current working directory. Returns NULL on errors.
138 Any other returned value must be freed with free. This is used
139 only when get_current_dir_name is not defined on the system. */
141 get_current_dir_name (void)
145 struct stat dotstat
, pwdstat
;
146 /* If PWD is accurate, use it instead of calling getwd. PWD is
147 sometimes a nicer name, and using it may avoid a fatal error if a
148 parent directory is searchable but not readable. */
149 if ((pwd
= getenv ("PWD")) != 0
150 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
151 && stat (pwd
, &pwdstat
) == 0
152 && stat (".", &dotstat
) == 0
153 && dotstat
.st_ino
== pwdstat
.st_ino
154 && dotstat
.st_dev
== pwdstat
.st_dev
156 && strlen (pwd
) < MAXPATHLEN
160 buf
= (char *) malloc (strlen (pwd
) + 1);
168 size_t buf_size
= 1024;
169 buf
= (char *) malloc (buf_size
);
174 if (getcwd (buf
, buf_size
) == buf
)
178 int tmp_errno
= errno
;
184 buf
= (char *) realloc (buf
, buf_size
);
192 /* We need MAXPATHLEN here. */
193 buf
= (char *) malloc (MAXPATHLEN
+ 1);
196 if (getwd (buf
) == NULL
)
198 int tmp_errno
= errno
;
210 /* Discard pending input on all input descriptors. */
213 discard_tty_input (void)
216 struct emacs_tty buf
;
221 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
222 while (dos_keyread () != -1)
224 #else /* not MSDOS */
226 struct tty_display_info
*tty
;
227 for (tty
= tty_list
; tty
; tty
= tty
->next
)
229 if (tty
->input
) /* Is the device suspended? */
231 emacs_get_tty (fileno (tty
->input
), &buf
);
232 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
236 #endif /* not MSDOS */
237 #endif /* not WINDOWSNT */
243 /* Arrange for character C to be read as the next input from
245 XXX What if we have multiple ttys?
251 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
254 /* Should perhaps error if in batch mode */
256 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
257 #else /* no TIOCSTI */
258 error ("Cannot stuff terminal input characters in this version of Unix");
259 #endif /* no TIOCSTI */
265 init_baud_rate (int fd
)
275 #else /* not DOS_NT */
280 emacs_ospeed
= cfgetospeed (&sg
);
281 #endif /* not DOS_NT */
284 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
285 ? baud_convert
[emacs_ospeed
] : 9600);
292 /* Set nonzero to make following function work under dbx
293 (at least for bsd). */
294 int wait_debugging EXTERNALLY_VISIBLE
;
299 wait_for_termination_1 (int pid
, int interruptible
)
303 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined(__GNU__)
304 /* Note that kill returns -1 even if the process is just a zombie now.
305 But inevitably a SIGCHLD interrupt should be generated
306 and child_sig will do wait3 and make the process go away. */
307 /* There is some indication that there is a bug involved with
308 termination of subprocesses, perhaps involving a kernel bug too,
309 but no idea what it is. Just as a hunch we signal SIGCHLD to see
310 if that causes the problem to go away or get worse. */
311 sigsetmask (sigmask (SIGCHLD
));
312 if (0 > kill (pid
, 0))
314 sigsetmask (SIGEMPTYMASK
);
315 kill (getpid (), SIGCHLD
);
321 sigpause (SIGEMPTYMASK
);
322 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
326 #else /* not WINDOWSNT */
327 sigblock (sigmask (SIGCHLD
));
329 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
331 sigunblock (sigmask (SIGCHLD
));
335 sigsuspend (&empty_mask
);
336 #endif /* not WINDOWSNT */
337 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
343 /* Wait for subprocess with process id `pid' to terminate and
344 make sure it will get eliminated (not remain forever as a zombie) */
347 wait_for_termination (int pid
)
349 wait_for_termination_1 (pid
, 0);
352 /* Like the above, but allow keyboard interruption. */
354 interruptible_wait_for_termination (int pid
)
356 wait_for_termination_1 (pid
, 1);
360 * flush any pending output
361 * (may flush input as well; it does not matter the way we use it)
365 flush_pending_output (int channel
)
367 /* FIXME: maybe this function should be removed */
370 /* Set up the terminal at the other end of a pseudo-terminal that
371 we will be controlling an inferior through.
372 It should not echo or do line-editing, since that is done
373 in Emacs. No padding needed for insertion into an Emacs buffer. */
376 child_setup_tty (int out
)
381 emacs_get_tty (out
, &s
);
382 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
383 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
385 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
386 Some versions of GNU Hurd do not have FFDLY? */
388 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
389 /* No output delays */
391 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
392 /* No output delays */
395 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
396 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
398 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
401 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
404 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
406 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
407 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
408 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
409 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
412 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
415 #ifdef SIGNALS_VIA_CHARACTERS
416 /* the QUIT and INTR character are used in process_send_signal
417 so set them here to something useful. */
418 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
419 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
420 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
421 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
422 #endif /* not SIGNALS_VIA_CHARACTERS */
425 /* Also, PTY overloads NUL and BREAK.
426 don't ignore break, but don't signal either, so it looks like NUL. */
427 s
.main
.c_iflag
&= ~IGNBRK
;
428 s
.main
.c_iflag
&= ~BRKINT
;
429 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
430 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
431 would force it to 0377. That looks like duplicated code. */
432 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
435 /* We originally enabled ICANON (and set VEOF to 04), and then had
436 proces.c send additional EOF chars to flush the output when faced
437 with long lines, but this leads to weird effects when the
438 subprocess has disabled ICANON and ends up seeing those spurious
439 extra EOFs. So we don't send EOFs any more in
440 process.c:send_process. First we tried to disable ICANON by
441 default, so if a subsprocess sets up ICANON, it's his problem (or
442 the Elisp package that talks to it) to deal with lines that are
443 too long. But this disables some features, such as the ability
444 to send EOF signals. So we re-enabled ICANON but there is no
445 more "send eof to flush" going on (which is wrong and unportable
446 in itself). The correct way to handle too much output is to
447 buffer what could not be written and then write it again when
448 select returns ok for writing. This has it own set of
449 problems. Write is now asynchronous, is that a problem? How much
450 do we buffer, and what do we do when that limit is reached? */
452 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
453 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
454 #if 0 /* These settings only apply to non-ICANON mode. */
455 s
.main
.c_cc
[VMIN
] = 1;
456 s
.main
.c_cc
[VTIME
] = 0;
459 emacs_set_tty (out
, &s
, 0);
460 #endif /* not WINDOWSNT */
462 #endif /* not MSDOS */
465 /* Record a signal code and the handler for it. */
469 void (*handler
) (int);
472 static void save_signal_handlers (struct save_signal
*);
473 static void restore_signal_handlers (struct save_signal
*);
475 /* Suspend the Emacs process; give terminal to its superior. */
480 #if defined (SIGTSTP) && !defined (MSDOS)
483 int pgrp
= EMACS_GETPGRP (0);
484 EMACS_KILLPG (pgrp
, SIGTSTP
);
487 #else /* No SIGTSTP */
488 /* On a system where suspending is not implemented,
489 instead fork a subshell and let it talk directly to the terminal
493 #endif /* no SIGTSTP */
496 /* Fork a subshell. */
501 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
503 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
506 struct save_signal saved_handlers
[5];
508 unsigned char *volatile str_volatile
= 0;
512 saved_handlers
[0].code
= SIGINT
;
513 saved_handlers
[1].code
= SIGQUIT
;
514 saved_handlers
[2].code
= SIGTERM
;
516 saved_handlers
[3].code
= SIGIO
;
517 saved_handlers
[4].code
= 0;
519 saved_handlers
[3].code
= 0;
522 /* Mentioning current_buffer->buffer would mean including buffer.h,
523 which somehow wedges the hp compiler. So instead... */
525 dir
= intern ("default-directory");
526 if (NILP (Fboundp (dir
)))
528 dir
= Fsymbol_value (dir
);
532 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
533 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
535 memcpy (str
, SDATA (dir
), len
);
536 if (str
[len
- 1] != '/') str
[len
++] = '/';
542 save_signal_handlers (saved_handlers
);
543 synch_process_alive
= 1;
547 error ("Can't spawn subshell");
554 #ifdef DOS_NT /* MW, Aug 1993 */
557 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
560 sh
= (char *) egetenv ("SHELL");
564 /* Use our buffer's default directory for the subshell. */
566 if (str
&& chdir ((char *) str
) != 0)
569 ignore_value (write (1, "Can't chdir\n", 12));
574 close_process_descs (); /* Close Emacs's pipes/ptys */
576 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
578 char *epwd
= getenv ("PWD");
579 char old_pwd
[MAXPATHLEN
+1+4];
581 /* If PWD is set, pass it with corrected value. */
584 strcpy (old_pwd
, epwd
);
585 if (str
[len
- 1] == '/')
587 setenv ("PWD", str
, 1);
590 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
592 putenv (old_pwd
); /* restore previous value */
594 #else /* not MSDOS */
596 /* Waits for process completion */
597 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
598 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
600 write (1, "Can't execute subshell", 22);
601 #else /* not WINDOWSNT */
602 execlp (sh
, sh
, (char *) 0);
603 ignore_value (write (1, "Can't execute subshell", 22));
605 #endif /* not WINDOWSNT */
606 #endif /* not MSDOS */
609 /* Do this now if we did not do it before. */
611 save_signal_handlers (saved_handlers
);
612 synch_process_alive
= 1;
616 wait_for_termination (pid
);
618 restore_signal_handlers (saved_handlers
);
619 synch_process_alive
= 0;
623 save_signal_handlers (struct save_signal
*saved_handlers
)
625 while (saved_handlers
->code
)
627 saved_handlers
->handler
628 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
634 restore_signal_handlers (struct save_signal
*saved_handlers
)
636 while (saved_handlers
->code
)
638 signal (saved_handlers
->code
, saved_handlers
->handler
);
644 /* If SIGIO is broken, don't do anything. */
661 unrequest_sigio (void)
668 static int old_fcntl_flags
[MAXDESC
];
674 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
675 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
677 interrupts_deferred
= 0;
684 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
688 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
689 /* XXX Uhm, FASYNC is not used anymore here. */
690 /* XXX Yeah, but you need it for SIGIO, don't you? */
699 sigunblock (sigmask (SIGWINCH
));
701 sigunblock (sigmask (SIGIO
));
703 interrupts_deferred
= 0;
707 unrequest_sigio (void)
712 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
718 sigblock (sigmask (SIGWINCH
));
720 sigblock (sigmask (SIGIO
));
721 interrupts_deferred
= 1;
724 #else /* no FASYNC */
730 if (noninteractive
|| read_socket_hook
)
733 croak ("request_sigio");
737 unrequest_sigio (void)
739 if (noninteractive
|| read_socket_hook
)
742 croak ("unrequest_sigio");
751 /* Getting and setting emacs_tty structures. */
753 /* Set *TC to the parameters associated with the terminal FD.
754 Return zero if all's well, or -1 if we ran into an error we
755 couldn't deal with. */
757 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
759 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
761 /* We have those nifty POSIX tcmumbleattr functions. */
762 memset (&settings
->main
, 0, sizeof (settings
->main
));
763 if (tcgetattr (fd
, &settings
->main
) < 0)
767 /* We have survived the tempest. */
772 /* Set the parameters of the tty on FD according to the contents of
773 *SETTINGS. If FLUSHP is non-zero, we discard input.
774 Return 0 if all went well, and -1 if anything failed. */
777 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
779 /* Set the primary parameters - baud rate, character size, etcetera. */
782 /* We have those nifty POSIX tcmumbleattr functions.
783 William J. Smith <wjs@wiis.wang.com> writes:
784 "POSIX 1003.1 defines tcsetattr to return success if it was
785 able to perform any of the requested actions, even if some
786 of the requested actions could not be performed.
787 We must read settings back to ensure tty setup properly.
788 AIX requires this to keep tty from hanging occasionally." */
789 /* This make sure that we don't loop indefinitely in here. */
790 for (i
= 0 ; i
< 10 ; i
++)
791 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
802 memset (&new, 0, sizeof (new));
803 /* Get the current settings, and see if they're what we asked for. */
804 tcgetattr (fd
, &new);
805 /* We cannot use memcmp on the whole structure here because under
806 * aix386 the termios structure has some reserved field that may
809 if ( new.c_iflag
== settings
->main
.c_iflag
810 && new.c_oflag
== settings
->main
.c_oflag
811 && new.c_cflag
== settings
->main
.c_cflag
812 && new.c_lflag
== settings
->main
.c_lflag
813 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
820 /* We have survived the tempest. */
827 static int old_fcntl_owner
[MAXDESC
];
828 #endif /* F_SETOWN */
830 /* This may also be defined in stdio,
831 but if so, this does no harm,
832 and using the same name avoids wasting the other one's space. */
835 unsigned char _sobuf
[BUFSIZ
+8];
840 /* Initialize the terminal mode on all tty devices that are currently
844 init_all_sys_modes (void)
846 struct tty_display_info
*tty
;
847 for (tty
= tty_list
; tty
; tty
= tty
->next
)
848 init_sys_modes (tty
);
851 /* Initialize the terminal mode on the given tty device. */
854 init_sys_modes (struct tty_display_info
*tty_out
)
856 struct emacs_tty tty
;
858 Vtty_erase_char
= Qnil
;
863 if (!tty_out
->output
)
864 return; /* The tty is suspended. */
866 if (! tty_out
->old_tty
)
867 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
869 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
871 tty
= *tty_out
->old_tty
;
873 #if !defined (DOS_NT)
874 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
876 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
877 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
878 #ifdef INLCR /* I'm just being cautious,
879 since I can't check how widespread INLCR is--rms. */
880 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
883 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
885 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
886 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
888 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
890 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
891 if (tty_out
->flow_control
)
893 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
895 tty
.main
.c_iflag
&= ~IXANY
;
899 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
900 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
902 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
904 if (tty_out
->meta_key
)
906 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
907 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
910 if (tty_out
->input
== stdin
)
912 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
913 /* Set up C-g for both SIGQUIT and SIGINT.
914 We don't know which we will get, but we handle both alike
915 so which one it really gives us does not matter. */
916 tty
.main
.c_cc
[VQUIT
] = quit_char
;
920 /* We normally don't get interrupt or quit signals from tty
921 devices other than our controlling terminal; therefore,
922 we must handle C-g as normal input. Unfortunately, this
923 means that the interrupt and quit feature must be
924 disabled on secondary ttys, or we would not even see the
927 Note that even though emacsclient could have special code
928 to pass SIGINT to Emacs, we should _not_ enable
929 interrupt/quit keys for emacsclient frames. This means
930 that we can't break out of loops in C code from a
931 secondary tty frame, but we can always decide what
932 display the C-g came from, which is more important from a
933 usability point of view. (Consider the case when two
934 people work together using the same Emacs instance.) */
935 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
936 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
938 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
939 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
941 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
946 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
949 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
951 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
952 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
955 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
958 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
959 #endif /* VREPRINT */
961 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
964 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
965 #endif /* VDISCARD */
967 if (tty_out
->flow_control
)
970 tty
.main
.c_cc
[VSTART
] = '\021';
973 tty
.main
.c_cc
[VSTOP
] = '\023';
979 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
982 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
987 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
988 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
989 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
990 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
991 if (tty_out
->flow_control
)
994 tty
.main
.c_cc
[VSTART
] = '\021';
997 tty
.main
.c_cc
[VSTOP
] = '\023';
1000 /* Also, PTY overloads NUL and BREAK.
1001 don't ignore break, but don't signal either, so it looks like NUL.
1002 This really serves a purpose only if running in an XTERM window
1003 or via TELNET or the like, but does no harm elsewhere. */
1004 tty
.main
.c_iflag
&= ~IGNBRK
;
1005 tty
.main
.c_iflag
&= ~BRKINT
;
1007 #endif /* not DOS_NT */
1009 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1010 if (!tty_out
->term_initted
)
1011 internal_terminal_init ();
1012 dos_ttraw (tty_out
);
1015 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1017 /* This code added to insure that, if flow-control is not to be used,
1018 we have an unlocked terminal at the start. */
1021 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1024 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1027 #if !defined (DOS_NT)
1029 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1034 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1035 if (interrupt_input
)
1037 old_fcntl_owner
[fileno (tty_out
->input
)] =
1038 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1039 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1040 init_sigio (fileno (tty_out
->input
));
1042 if (gpm_tty
== tty_out
)
1044 /* Arrange for mouse events to give us SIGIO signals. */
1045 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1046 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1047 init_sigio (gpm_fd
);
1049 #endif /* HAVE_GPM */
1051 #endif /* F_GETOWN */
1052 #endif /* F_SETFL */
1055 /* This symbol is defined on recent USG systems.
1056 Someone says without this call USG won't really buffer the file
1057 even with a call to setbuf. */
1058 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1060 setbuf (tty_out
->output
, (char *) _sobuf
);
1063 if (tty_out
->terminal
->set_terminal_modes_hook
)
1064 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1066 if (!tty_out
->term_initted
)
1068 Lisp_Object tail
, frame
;
1069 FOR_EACH_FRAME (tail
, frame
)
1071 /* XXX This needs to be revised. */
1072 if (FRAME_TERMCAP_P (XFRAME (frame
))
1073 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1074 init_frame_faces (XFRAME (frame
));
1078 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1080 /* We used to call "direct_output_forward_char(0)" here,
1081 but it's not clear why, since it may not do anything anyway. */
1085 Lisp_Object tail
, frame
;
1087 FOR_EACH_FRAME (tail
, frame
)
1089 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1090 || FRAME_MSDOS_P (XFRAME (frame
)))
1091 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1092 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1096 tty_out
->term_initted
= 1;
1099 /* Return nonzero if safe to use tabs in output.
1100 At the time this is called, init_sys_modes has not been done yet. */
1103 tabs_safe_p (int fd
)
1105 struct emacs_tty etty
;
1107 emacs_get_tty (fd
, &etty
);
1110 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1111 #else /* not TABDLY */
1113 #endif /* not TABDLY */
1119 /* Get terminal size from system.
1120 Store number of lines into *HEIGHTP and width into *WIDTHP.
1121 We store 0 if there's no valid information. */
1124 get_tty_size (int fd
, int *widthp
, int *heightp
)
1126 #if defined TIOCGWINSZ
1129 struct winsize size
;
1131 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1132 *widthp
= *heightp
= 0;
1135 *widthp
= size
.ws_col
;
1136 *heightp
= size
.ws_row
;
1139 #elif defined TIOCGSIZE
1141 /* SunOS - style. */
1142 struct ttysize size
;
1144 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1145 *widthp
= *heightp
= 0;
1148 *widthp
= size
.ts_cols
;
1149 *heightp
= size
.ts_lines
;
1152 #elif defined WINDOWSNT
1154 CONSOLE_SCREEN_BUFFER_INFO info
;
1155 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1157 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1158 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1161 *widthp
= *heightp
= 0;
1165 *widthp
= ScreenCols ();
1166 *heightp
= ScreenRows ();
1168 #else /* system doesn't know size */
1176 /* Set the logical window size associated with descriptor FD
1177 to HEIGHT and WIDTH. This is used mainly with ptys. */
1180 set_window_size (int fd
, int height
, int width
)
1185 struct winsize size
;
1186 size
.ws_row
= height
;
1187 size
.ws_col
= width
;
1189 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1190 return 0; /* error */
1197 /* SunOS - style. */
1198 struct ttysize size
;
1199 size
.ts_lines
= height
;
1200 size
.ts_cols
= width
;
1202 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1208 #endif /* not SunOS-style */
1209 #endif /* not BSD-style */
1214 /* Prepare all terminal devices for exiting Emacs. */
1217 reset_all_sys_modes (void)
1219 struct tty_display_info
*tty
;
1220 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1221 reset_sys_modes (tty
);
1224 /* Prepare the terminal for closing it; move the cursor to the
1225 bottom of the frame, turn off interrupt-driven I/O, etc. */
1228 reset_sys_modes (struct tty_display_info
*tty_out
)
1235 if (!tty_out
->term_initted
)
1238 if (!tty_out
->output
)
1239 return; /* The tty is suspended. */
1241 /* Go to and clear the last line of the terminal. */
1243 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1245 /* Code adapted from tty_clear_end_of_line. */
1246 if (tty_out
->TS_clr_line
)
1248 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1251 { /* have to do it the hard way */
1253 tty_turn_off_insert (tty_out
);
1255 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1257 fputc (' ', tty_out
->output
);
1261 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1262 fflush (tty_out
->output
);
1264 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1265 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1268 /* Avoid possible loss of output when changing terminal modes. */
1269 fsync (fileno (tty_out
->output
));
1273 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1274 if (interrupt_input
)
1276 reset_sigio (fileno (tty_out
->input
));
1277 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1278 old_fcntl_owner
[fileno (tty_out
->input
)]);
1280 #endif /* F_SETOWN */
1282 fcntl (fileno (tty_out
->input
), F_SETFL
,
1283 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1285 #endif /* F_SETFL */
1287 if (tty_out
->old_tty
)
1288 while (emacs_set_tty (fileno (tty_out
->input
),
1289 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1292 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1300 /* Set up the proper status flags for use of a pty. */
1305 /* I'm told that TOICREMOTE does not mean control chars
1306 "can't be sent" but rather that they don't have
1307 input-editing or signaling effects.
1308 That should be good, because we have other ways
1309 to do those things in Emacs.
1310 However, telnet mode seems not to work on 4.2.
1311 So TIOCREMOTE is turned off now. */
1313 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1314 will hang. In particular, the "timeout" feature (which
1315 causes a read to return if there is no data available)
1316 does this. Also it is known that telnet mode will hang
1317 in such a way that Emacs must be stopped (perhaps this
1318 is the same problem).
1320 If TIOCREMOTE is turned off, then there is a bug in
1321 hp-ux which sometimes loses data. Apparently the
1322 code which blocks the master process when the internal
1323 buffer fills up does not work. Other than this,
1324 though, everything else seems to work fine.
1326 Since the latter lossage is more benign, we may as well
1327 lose that way. -- cph */
1329 #if defined(UNIX98_PTYS)
1332 ioctl (fd
, FIONBIO
, &on
);
1337 #endif /* HAVE_PTYS */
1340 #include <sys/socket.h>
1342 #endif /* HAVE_SOCKETS */
1345 #ifndef HAVE_H_ERRNO
1348 #endif /* TRY_AGAIN */
1351 init_system_name (void)
1353 #ifndef HAVE_GETHOSTNAME
1356 Vsystem_name
= build_string (uts
.nodename
);
1357 #else /* HAVE_GETHOSTNAME */
1358 unsigned int hostname_size
= 256;
1359 char *hostname
= (char *) alloca (hostname_size
);
1361 /* Try to get the host name; if the buffer is too short, try
1362 again. Apparently, the only indication gethostname gives of
1363 whether the buffer was large enough is the presence or absence
1364 of a '\0' in the string. Eech. */
1367 gethostname (hostname
, hostname_size
- 1);
1368 hostname
[hostname_size
- 1] = '\0';
1370 /* Was the buffer large enough for the '\0'? */
1371 if (strlen (hostname
) < hostname_size
- 1)
1374 hostname_size
<<= 1;
1375 hostname
= (char *) alloca (hostname_size
);
1378 /* Turn the hostname into the official, fully-qualified hostname.
1379 Don't do this if we're going to dump; this can confuse system
1380 libraries on some machines and make the dumped emacs core dump. */
1383 #endif /* not CANNOT_DUMP */
1384 if (! strchr (hostname
, '.'))
1387 #ifdef HAVE_GETADDRINFO
1388 struct addrinfo
*res
;
1389 struct addrinfo hints
;
1392 memset (&hints
, 0, sizeof (hints
));
1393 hints
.ai_socktype
= SOCK_STREAM
;
1394 hints
.ai_flags
= AI_CANONNAME
;
1396 for (count
= 0;; count
++)
1398 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1399 || ret
!= EAI_AGAIN
)
1404 Fsleep_for (make_number (1), Qnil
);
1409 struct addrinfo
*it
= res
;
1412 char *fqdn
= it
->ai_canonname
;
1413 if (fqdn
&& strchr (fqdn
, '.')
1414 && strcmp (fqdn
, "localhost.localdomain") != 0)
1420 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1421 strcpy (hostname
, it
->ai_canonname
);
1425 #else /* !HAVE_GETADDRINFO */
1427 for (count
= 0;; count
++)
1433 hp
= gethostbyname (hostname
);
1435 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1442 Fsleep_for (make_number (1), Qnil
);
1447 char *fqdn
= (char *) hp
->h_name
;
1449 if (!strchr (fqdn
, '.'))
1451 /* We still don't have a fully qualified domain name.
1452 Try to find one in the list of alternate names */
1453 char **alias
= hp
->h_aliases
;
1455 && (!strchr (*alias
, '.')
1456 || !strcmp (*alias
, "localhost.localdomain")))
1463 #endif /* !HAVE_GETADDRINFO */
1465 #endif /* HAVE_SOCKETS */
1466 Vsystem_name
= build_string (hostname
);
1467 #endif /* HAVE_GETHOSTNAME */
1470 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1471 if (*p
== ' ' || *p
== '\t')
1476 /* POSIX signals support - DJB */
1477 /* Anyone with POSIX signals should have ANSI C declarations */
1479 sigset_t empty_mask
;
1484 sys_signal (int signal_number
, signal_handler_t action
)
1486 struct sigaction new_action
, old_action
;
1487 sigemptyset (&new_action
.sa_mask
);
1488 new_action
.sa_handler
= action
;
1489 new_action
.sa_flags
= 0;
1490 #if defined (SA_RESTART)
1491 /* Emacs mostly works better with restartable system services. If this
1492 flag exists, we probably want to turn it on here.
1493 However, on some systems this resets the timeout of `select'
1494 which means that `select' never finishes if it keeps getting signals.
1495 BROKEN_SA_RESTART is defined on those systems. */
1496 /* It's not clear why the comment above says "mostly works better". --Stef
1497 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1498 for pending input so we need long-running syscalls to be interrupted
1499 after a signal that sets the interrupt_input_pending flag. */
1500 /* Non-interactive keyboard input goes through stdio, where we always
1501 want restartable system calls. */
1502 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1505 new_action
.sa_flags
= SA_RESTART
;
1507 sigaction (signal_number
, &new_action
, &old_action
);
1508 return (old_action
.sa_handler
);
1511 #endif /* WINDOWSNT */
1514 /* If we're compiling with GCC, we don't need this function, since it
1515 can be written as a macro. */
1517 sys_sigmask (int sig
)
1520 sigemptyset (&mask
);
1521 sigaddset (&mask
, sig
);
1526 /* I'd like to have these guys return pointers to the mask storage in here,
1527 but there'd be trouble if the code was saving multiple masks. I'll be
1528 safe and pass the structure. It normally won't be more than 2 bytes
1532 sys_sigblock (sigset_t new_mask
)
1535 pthread_sigmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1540 sys_sigunblock (sigset_t new_mask
)
1543 pthread_sigmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1548 sys_sigsetmask (sigset_t new_mask
)
1551 pthread_sigmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1556 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1557 static char *my_sys_siglist
[NSIG
];
1561 # define sys_siglist my_sys_siglist
1567 sigemptyset (&empty_mask
);
1569 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1573 sys_siglist
[SIGABRT
] = "Aborted";
1576 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1579 sys_siglist
[SIGALRM
] = "Alarm clock";
1582 sys_siglist
[SIGBUS
] = "Bus error";
1585 sys_siglist
[SIGCLD
] = "Child status changed";
1588 sys_siglist
[SIGCHLD
] = "Child status changed";
1591 sys_siglist
[SIGCONT
] = "Continued";
1594 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1597 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1600 sys_siglist
[SIGEMT
] = "Emulation trap";
1603 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1606 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1609 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1612 sys_siglist
[SIGHUP
] = "Hangup";
1615 sys_siglist
[SIGILL
] = "Illegal instruction";
1618 sys_siglist
[SIGINT
] = "Interrupt";
1621 sys_siglist
[SIGIO
] = "I/O possible";
1624 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1627 sys_siglist
[SIGIOT
] = "IOT trap";
1630 sys_siglist
[SIGKILL
] = "Killed";
1633 sys_siglist
[SIGLOST
] = "Resource lost";
1636 sys_siglist
[SIGLWP
] = "SIGLWP";
1639 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1642 sys_siglist
[SIGWIND
] = "SIGPHONE";
1645 sys_siglist
[SIGPIPE
] = "Broken pipe";
1648 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1651 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1654 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1657 sys_siglist
[SIGPWR
] = "Power-fail restart";
1660 sys_siglist
[SIGQUIT
] = "Quit";
1663 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1666 sys_siglist
[SIGSAK
] = "Secure attention";
1669 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1672 sys_siglist
[SIGSOUND
] = "Sound completed";
1675 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1678 sys_siglist
[SIGSTP
] = "Stopped (user)";
1681 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1684 sys_siglist
[SIGTERM
] = "Terminated";
1687 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1690 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1693 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1696 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1699 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1702 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1705 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1708 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1711 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1714 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1717 sys_siglist
[SIGWINCH
] = "Window size changed";
1720 sys_siglist
[SIGWIND
] = "SIGWIND";
1723 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1726 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1729 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1738 /* Figure out how many bits the system's random number generator uses.
1739 `random' and `lrand48' are assumed to return 31 usable bits.
1740 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1741 so we'll shift it and treat it like the 15-bit USG `rand'. */
1745 # define RAND_BITS 31
1746 # else /* !HAVE_RANDOM */
1747 # ifdef HAVE_LRAND48
1748 # define RAND_BITS 31
1749 # define random lrand48
1750 # else /* !HAVE_LRAND48 */
1751 # define RAND_BITS 15
1752 # if RAND_MAX == 32767
1753 # define random rand
1754 # else /* RAND_MAX != 32767 */
1755 # if RAND_MAX == 2147483647
1756 # define random() (rand () >> 16)
1757 # else /* RAND_MAX != 2147483647 */
1759 # define random rand
1761 # define random() (rand () >> 16)
1763 # endif /* RAND_MAX != 2147483647 */
1764 # endif /* RAND_MAX != 32767 */
1765 # endif /* !HAVE_LRAND48 */
1766 # endif /* !HAVE_RANDOM */
1767 #endif /* !RAND_BITS */
1770 seed_random (long int arg
)
1773 srandom ((unsigned int)arg
);
1775 # ifdef HAVE_LRAND48
1778 srand ((unsigned int)arg
);
1784 * Return a nonnegative random integer out of whatever we've got.
1785 * It contains enough bits to make a random (signed) Emacs fixnum.
1786 * This suffices even for a 64-bit architecture with a 15-bit rand.
1793 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1794 val
= (random () ^ (val
<< RAND_BITS
)
1795 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1796 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1797 return val
& INTMASK
;
1800 #ifndef HAVE_STRERROR
1803 strerror (int errnum
)
1805 extern char *sys_errlist
[];
1806 extern int sys_nerr
;
1808 if (errnum
>= 0 && errnum
< sys_nerr
)
1809 return sys_errlist
[errnum
];
1810 return (char *) "Unknown error";
1812 #endif /* not WINDOWSNT */
1813 #endif /* ! HAVE_STRERROR */
1816 emacs_open (const char *path
, int oflag
, int mode
)
1818 register int rtnval
;
1820 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1821 && (errno
== EINTR
))
1827 emacs_close (int fd
)
1830 register int rtnval
;
1832 while ((rtnval
= close (fd
)) == -1
1833 && (errno
== EINTR
))
1836 /* If close is interrupted SunOS 4.1 may or may not have closed the
1837 file descriptor. If it did the second close will fail with
1838 errno = EBADF. That means we have succeeded. */
1839 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1845 /* Maximum number of bytes to read or write in a single system call.
1846 This works around a serious bug in Linux kernels before 2.6.16; see
1847 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1848 It's likely to work around similar bugs in other operating systems, so do it
1849 on all platforms. Round INT_MAX down to a page size, with the conservative
1850 assumption that page sizes are at most 2**18 bytes (any kernel with a
1851 page size larger than that shouldn't have the bug). */
1852 #ifndef MAX_RW_COUNT
1853 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1856 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1857 Return the number of bytes read, which might be less than NBYTE.
1858 On error, set errno and return -1. */
1860 emacs_read (int fildes
, char *buf
, EMACS_INT nbyte
)
1862 register ssize_t rtnval
;
1864 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1865 passes a size that large to emacs_read. */
1867 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1868 && (errno
== EINTR
))
1873 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1874 or if a partial write occurs. Return the number of bytes written, setting
1875 errno if this is less than NBYTE. */
1877 emacs_write (int fildes
, const char *buf
, EMACS_INT nbyte
)
1880 EMACS_INT bytes_written
;
1886 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1893 /* I originally used `QUIT' but that might causes files to
1894 be truncated if you hit C-g in the middle of it. --Stef */
1895 process_pending_signals ();
1905 bytes_written
+= rtnval
;
1908 return (bytes_written
);
1911 static struct allocator
const emacs_norealloc_allocator
=
1912 { xmalloc
, NULL
, xfree
, memory_full
};
1914 /* Get the symbolic link value of FILENAME. Return a pointer to a
1915 NUL-terminated string. If readlink fails, return NULL and set
1916 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1917 Otherwise, allocate memory and return a pointer to that memory. If
1918 memory allocation fails, diagnose and fail without returning. If
1919 successful, store the length of the symbolic link into *LINKLEN. */
1921 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1923 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1924 &emacs_norealloc_allocator
, careadlinkatcwd
);
1929 * All of the following are for USG.
1931 * On USG systems the system calls are INTERRUPTIBLE by signals
1932 * that the user program has elected to catch. Thus the system call
1933 * must be retried in these cases. To handle this without massive
1934 * changes in the source code, we remap the standard system call names
1935 * to names for our own functions in sysdep.c that do the system call
1936 * with retries. Actually, for portability reasons, it is good
1937 * programming practice, as this example shows, to limit all actual
1938 * system calls to a single occurrence in the source. Sure, this
1939 * adds an extra level of function call overhead but it is almost
1940 * always negligible. Fred Fish, Unisoft Systems Inc.
1944 * Warning, this function may not duplicate 4.2 action properly
1945 * under error conditions.
1951 /* In 4.1, param.h fails to define this. */
1952 #define MAXPATHLEN 1024
1956 getwd (char *pathname
)
1958 char *npath
, *spath
;
1959 extern char *getcwd (char *, size_t);
1961 BLOCK_INPUT
; /* getcwd uses malloc */
1962 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1968 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1969 up to first slash. Should be harmless on other systems. */
1970 while (*npath
&& *npath
!= '/')
1972 strcpy (pathname
, npath
);
1973 free (spath
); /* getcwd uses malloc */
1978 #endif /* HAVE_GETWD */
1981 * Emulate rename using unlink/link. Note that this is
1982 * only partially correct. Also, doesn't enforce restriction
1983 * that files be of same type (regular->regular, dir->dir, etc).
1989 rename (const char *from
, const char *to
)
1991 if (access (from
, 0) == 0)
1994 if (link (from
, to
) == 0)
1995 if (unlink (from
) == 0)
2004 #if defined(HPUX) && !defined(HAVE_PERROR)
2006 /* HPUX curses library references perror, but as far as we know
2007 it won't be called. Anyway this definition will do for now. */
2013 #endif /* HPUX and not HAVE_PERROR */
2016 * Gettimeofday. Simulate as much as possible. Only accurate
2017 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2018 * Only needed when subprocesses are defined.
2021 #ifndef HAVE_GETTIMEOFDAY
2025 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2027 extern long time (long);
2029 tp
->tv_sec
= time ((long *)0);
2032 tzp
->tz_minuteswest
= -1;
2037 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2040 * This function will go away as soon as all the stubs fixed. (fnf)
2044 croak (char *badfunc
)
2046 printf ("%s not yet implemented\r\n", badfunc
);
2047 reset_all_sys_modes ();
2053 /* Directory routines for systems that don't have them. */
2055 #ifdef HAVE_DIRENT_H
2059 #if !defined (HAVE_CLOSEDIR)
2062 closedir (DIR *dirp
/* stream from opendir */)
2066 rtnval
= emacs_close (dirp
->dd_fd
);
2067 xfree ((char *) dirp
);
2071 #endif /* not HAVE_CLOSEDIR */
2072 #endif /* HAVE_DIRENT_H */
2076 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2079 struct timeval tv
[2];
2082 return utimes (filename
, tv
);
2083 #else /* not HAVE_UTIMES */
2085 utb
.actime
= EMACS_SECS (atime
);
2086 utb
.modtime
= EMACS_SECS (mtime
);
2087 return utime (filename
, &utb
);
2088 #endif /* not HAVE_UTIMES */
2091 /* mkdir and rmdir functions, for systems which don't have them. */
2095 * Written by Robert Rother, Mariah Corporation, August 1985.
2097 * If you want it, it's yours. All I ask in return is that if you
2098 * figure out how to do this in a Bourne Shell script you send me
2100 * sdcsvax!rmr or rmr@uscd
2102 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2103 * subroutine. 11Mar86; hoptoad!gnu
2105 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2106 * subroutine didn't return EEXIST. It does now.
2113 mkdir (char *dpath
, int dmode
)
2115 int cpid
, status
, fd
;
2116 struct stat statbuf
;
2118 if (stat (dpath
, &statbuf
) == 0)
2120 errno
= EEXIST
; /* Stat worked, so it already exists */
2124 /* If stat fails for a reason other than non-existence, return error */
2125 if (errno
!= ENOENT
)
2128 synch_process_alive
= 1;
2129 switch (cpid
= fork ())
2132 case -1: /* Error in fork */
2133 return (-1); /* Errno is set already */
2135 case 0: /* Child process */
2137 * Cheap hack to set mode of new directory. Since this
2138 * child process is going away anyway, we zap its umask.
2139 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2140 * directory. Does anybody care?
2142 status
= umask (0); /* Get current umask */
2143 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2144 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2151 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2152 _exit (-1); /* Can't exec /bin/mkdir */
2154 default: /* Parent process */
2155 wait_for_termination (cpid
);
2158 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2159 || synch_process_termsig
!= 0)
2161 errno
= EIO
; /* We don't know why, but */
2162 return -1; /* /bin/mkdir failed */
2167 #endif /* not HAVE_MKDIR */
2173 int cpid
, status
, fd
;
2174 struct stat statbuf
;
2176 if (stat (dpath
, &statbuf
) != 0)
2178 /* Stat just set errno. We don't have to */
2182 synch_process_alive
= 1;
2183 switch (cpid
= fork ())
2186 case -1: /* Error in fork */
2187 return (-1); /* Errno is set already */
2189 case 0: /* Child process */
2190 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2197 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2198 _exit (-1); /* Can't exec /bin/rmdir */
2200 default: /* Parent process */
2201 wait_for_termination (cpid
);
2204 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2205 || synch_process_termsig
!= 0)
2207 errno
= EIO
; /* We don't know why, but */
2208 return -1; /* /bin/rmdir failed */
2213 #endif /* !HAVE_RMDIR */
2216 #ifndef HAVE_STRSIGNAL
2218 strsignal (int code
)
2222 if (0 <= code
&& code
< NSIG
)
2224 /* Cast to suppress warning if the table has const char *. */
2225 signame
= (char *) sys_siglist
[code
];
2230 #endif /* HAVE_STRSIGNAL */
2233 /* For make-serial-process */
2235 serial_open (char *port
)
2239 fd
= emacs_open ((char*) port
,
2252 error ("Could not open %s: %s",
2253 port
, emacs_strerror (errno
));
2256 ioctl (fd
, TIOCEXCL
, (char *) 0);
2262 #if !defined (HAVE_CFMAKERAW)
2263 /* Workaround for targets which are missing cfmakeraw. */
2264 /* Pasted from man page. */
2266 cfmakeraw (struct termios
*termios_p
)
2268 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2269 termios_p
->c_oflag
&= ~OPOST
;
2270 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2271 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2272 termios_p
->c_cflag
|= CS8
;
2274 #endif /* !defined (HAVE_CFMAKERAW */
2276 #if !defined (HAVE_CFSETSPEED)
2277 /* Workaround for targets which are missing cfsetspeed. */
2279 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2281 return (cfsetispeed (termios_p
, vitesse
)
2282 + cfsetospeed (termios_p
, vitesse
));
2286 /* For serial-process-configure */
2288 serial_configure (struct Lisp_Process
*p
,
2289 Lisp_Object contact
)
2291 Lisp_Object childp2
= Qnil
;
2292 Lisp_Object tem
= Qnil
;
2293 struct termios attr
;
2295 char summary
[4] = "???"; /* This usually becomes "8N1". */
2297 childp2
= Fcopy_sequence (p
->childp
);
2299 /* Read port attributes and prepare default configuration. */
2300 err
= tcgetattr (p
->outfd
, &attr
);
2302 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2304 #if defined (CLOCAL)
2305 attr
.c_cflag
|= CLOCAL
;
2308 attr
.c_cflag
|= CREAD
;
2311 /* Configure speed. */
2312 if (!NILP (Fplist_member (contact
, QCspeed
)))
2313 tem
= Fplist_get (contact
, QCspeed
);
2315 tem
= Fplist_get (p
->childp
, QCspeed
);
2317 err
= cfsetspeed (&attr
, XINT (tem
));
2319 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2320 emacs_strerror (errno
));
2321 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2323 /* Configure bytesize. */
2324 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2325 tem
= Fplist_get (contact
, QCbytesize
);
2327 tem
= Fplist_get (p
->childp
, QCbytesize
);
2329 tem
= make_number (8);
2331 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2332 error (":bytesize must be nil (8), 7, or 8");
2333 summary
[0] = XINT (tem
) + '0';
2334 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2335 attr
.c_cflag
&= ~CSIZE
;
2336 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2338 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2339 if (XINT (tem
) != 8)
2340 error ("Bytesize cannot be changed");
2342 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2344 /* Configure parity. */
2345 if (!NILP (Fplist_member (contact
, QCparity
)))
2346 tem
= Fplist_get (contact
, QCparity
);
2348 tem
= Fplist_get (p
->childp
, QCparity
);
2349 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2350 error (":parity must be nil (no parity), `even', or `odd'");
2351 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2352 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2353 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2358 else if (EQ (tem
, Qeven
))
2361 attr
.c_cflag
|= PARENB
;
2362 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2364 else if (EQ (tem
, Qodd
))
2367 attr
.c_cflag
|= (PARENB
| PARODD
);
2368 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2371 /* Don't error on no parity, which should be set by cfmakeraw. */
2373 error ("Parity cannot be configured");
2375 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2377 /* Configure stopbits. */
2378 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2379 tem
= Fplist_get (contact
, QCstopbits
);
2381 tem
= Fplist_get (p
->childp
, QCstopbits
);
2383 tem
= make_number (1);
2385 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2386 error (":stopbits must be nil (1 stopbit), 1, or 2");
2387 summary
[2] = XINT (tem
) + '0';
2388 #if defined (CSTOPB)
2389 attr
.c_cflag
&= ~CSTOPB
;
2390 if (XINT (tem
) == 2)
2391 attr
.c_cflag
|= CSTOPB
;
2393 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2394 if (XINT (tem
) != 1)
2395 error ("Stopbits cannot be configured");
2397 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2399 /* Configure flowcontrol. */
2400 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2401 tem
= Fplist_get (contact
, QCflowcontrol
);
2403 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2404 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2405 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2406 #if defined (CRTSCTS)
2407 attr
.c_cflag
&= ~CRTSCTS
;
2409 #if defined (CNEW_RTSCTS)
2410 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2412 #if defined (IXON) && defined (IXOFF)
2413 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2417 /* Already configured. */
2419 else if (EQ (tem
, Qhw
))
2421 #if defined (CRTSCTS)
2422 attr
.c_cflag
|= CRTSCTS
;
2423 #elif defined (CNEW_RTSCTS)
2424 attr
.c_cflag
|= CNEW_RTSCTS
;
2426 error ("Hardware flowcontrol (RTS/CTS) not supported");
2429 else if (EQ (tem
, Qsw
))
2431 #if defined (IXON) && defined (IXOFF)
2432 attr
.c_iflag
|= (IXON
| IXOFF
);
2434 error ("Software flowcontrol (XON/XOFF) not supported");
2437 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2439 /* Activate configuration. */
2440 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2442 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2444 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2445 p
->childp
= childp2
;
2448 #endif /* not DOS_NT */
2450 /* System depended enumeration of and access to system processes a-la ps(1). */
2454 /* Process enumeration and access via /proc. */
2457 list_system_processes (void)
2459 Lisp_Object procdir
, match
, proclist
, next
;
2460 struct gcpro gcpro1
, gcpro2
;
2461 register Lisp_Object tail
;
2463 GCPRO2 (procdir
, match
);
2464 /* For every process on the system, there's a directory in the
2465 "/proc" pseudo-directory whose name is the numeric ID of that
2467 procdir
= build_string ("/proc");
2468 match
= build_string ("[0-9]+");
2469 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2471 /* `proclist' gives process IDs as strings. Destructively convert
2472 each string into a number. */
2473 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2476 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2480 /* directory_files_internal returns the files in reverse order; undo
2482 proclist
= Fnreverse (proclist
);
2486 /* The WINDOWSNT implementation is in w32.c.
2487 The MSDOS implementation is in dosfns.c. */
2488 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2491 list_system_processes (void)
2496 #endif /* !defined (WINDOWSNT) */
2500 time_from_jiffies (unsigned long long tval
, long hz
,
2501 time_t *sec
, unsigned *usec
)
2503 unsigned long long ullsec
;
2507 tval
-= ullsec
* hz
;
2508 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2510 *usec
= tval
* 1000000 / hz
;
2512 *usec
= tval
/ (hz
/ 1000000);
2516 ltime_from_jiffies (unsigned long long tval
, long hz
)
2521 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2523 return list3 (make_number ((sec
>> 16) & 0xffff),
2524 make_number (sec
& 0xffff),
2525 make_number (usec
));
2529 get_up_time (time_t *sec
, unsigned *usec
)
2536 fup
= fopen ("/proc/uptime", "r");
2540 double uptime
, idletime
;
2542 /* The numbers in /proc/uptime use C-locale decimal point, but
2543 we already set ourselves to the C locale (see `fixup_locale'
2545 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2548 *usec
= (uptime
- *sec
) * 1000000;
2555 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2556 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2559 procfs_ttyname (int rdev
)
2562 char name
[PATH_MAX
];
2565 fdev
= fopen ("/proc/tty/drivers", "r");
2570 unsigned long minor_beg
, minor_end
;
2571 char minor
[25]; /* 2 32-bit numbers + dash */
2574 while (!feof (fdev
) && !ferror (fdev
))
2576 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2577 && major
== MAJOR (rdev
))
2579 minor_beg
= strtoul (minor
, &endp
, 0);
2581 minor_end
= minor_beg
;
2582 else if (*endp
== '-')
2583 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2587 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2589 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2597 return build_string (name
);
2600 static unsigned long
2601 procfs_get_total_memory (void)
2604 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2607 fmem
= fopen ("/proc/meminfo", "r");
2611 unsigned long entry_value
;
2612 char entry_name
[20]; /* the longest I saw is 13+1 */
2614 while (!feof (fmem
) && !ferror (fmem
))
2616 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2617 && strcmp (entry_name
, "MemTotal:") == 0)
2619 retval
= entry_value
;
2630 system_process_attributes (Lisp_Object pid
)
2632 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2636 long clocks_per_sec
;
2638 char procbuf
[1025], *p
, *q
;
2641 const char *cmd
= NULL
;
2642 char *cmdline
= NULL
;
2643 size_t cmdsize
= 0, cmdline_size
;
2645 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2646 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2647 long priority
, niceness
, rss
;
2648 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2651 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2653 Lisp_Object attrs
= Qnil
;
2654 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2655 struct gcpro gcpro1
, gcpro2
;
2656 EMACS_INT uid_eint
, gid_eint
;
2658 CHECK_NUMBER_OR_FLOAT (pid
);
2659 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2660 sprintf (procfn
, "/proc/%u", proc_id
);
2661 if (stat (procfn
, &st
) < 0)
2664 GCPRO2 (attrs
, decoded_cmd
);
2668 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2670 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2672 pw
= getpwuid (uid
);
2675 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2679 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2681 gr
= getgrgid (gid
);
2684 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2686 strcpy (fn
, procfn
);
2687 procfn_end
= fn
+ strlen (fn
);
2688 strcpy (procfn_end
, "/stat");
2689 fd
= emacs_open (fn
, O_RDONLY
, 0);
2690 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2692 procbuf
[nread
] = '\0';
2695 p
= strchr (p
, '(');
2698 q
= strrchr (p
+ 1, ')');
2713 /* Command name is encoded in locale-coding-system; decode it. */
2714 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2715 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2716 Vlocale_coding_system
, 0);
2717 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2721 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2723 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2724 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2725 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2726 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2727 &u_time
, &s_time
, &cutime
, &cstime
,
2728 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2733 state_str
[1] = '\0';
2734 tem
= build_string (state_str
);
2735 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2737 /* Stops GCC whining about limited range of data type. */
2742 thcount_eint
= thcount
;
2743 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2744 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2745 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2746 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2747 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2748 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2749 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2750 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2751 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2752 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2753 if (clocks_per_sec
< 0)
2754 clocks_per_sec
= 100;
2755 attrs
= Fcons (Fcons (Qutime
,
2756 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2758 attrs
= Fcons (Fcons (Qstime
,
2759 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2761 attrs
= Fcons (Fcons (Qtime
,
2762 ltime_from_jiffies (s_time
+ u_time
,
2765 attrs
= Fcons (Fcons (Qcutime
,
2766 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2768 attrs
= Fcons (Fcons (Qcstime
,
2769 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2771 attrs
= Fcons (Fcons (Qctime
,
2772 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2774 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2775 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2776 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2777 EMACS_GET_TIME (tnow
);
2778 get_up_time (&sec
, &usec
);
2779 EMACS_SET_SECS (telapsed
, sec
);
2780 EMACS_SET_USECS (telapsed
, usec
);
2781 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2782 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2783 EMACS_SET_SECS (tstart
, sec
);
2784 EMACS_SET_USECS (tstart
, usec
);
2785 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2786 attrs
= Fcons (Fcons (Qstart
,
2788 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2790 (EMACS_SECS (tstart
) & 0xffff),
2792 (EMACS_USECS (tstart
)))),
2794 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2795 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2796 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2797 attrs
= Fcons (Fcons (Qetime
,
2799 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2801 (EMACS_SECS (telapsed
) & 0xffff),
2803 (EMACS_USECS (telapsed
)))),
2805 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2806 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2809 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2810 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2813 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2820 strcpy (procfn_end
, "/cmdline");
2821 fd
= emacs_open (fn
, O_RDONLY
, 0);
2825 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
2828 if (isspace (c
) || c
== '\\')
2829 cmdline_size
++; /* for later quoting, see below */
2833 cmdline
= xmalloc (cmdline_size
+ 1);
2834 lseek (fd
, 0L, SEEK_SET
);
2836 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2837 cmdline
[nread
++] = '\0';
2840 /* Assigning zero to `nread' makes us skip the following
2841 two loops, assign zero to cmdline_size, and enter the
2842 following `if' clause that handles unknown command
2846 /* We don't want trailing null characters. */
2847 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2849 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2851 /* Escape-quote whitespace and backslashes. */
2852 if (isspace (*p
) || *p
== '\\')
2854 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2858 else if (*p
== '\0')
2861 cmdline_size
= nread
;
2868 cmdsize
= strlen (cmd
);
2869 cmdline_size
= cmdsize
+ 2;
2870 cmdline
= xmalloc (cmdline_size
+ 1);
2871 strcpy (cmdline
, "[");
2872 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2875 /* Command line is encoded in locale-coding-system; decode it. */
2876 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2877 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2878 Vlocale_coding_system
, 0);
2880 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2887 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2889 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2890 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2891 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2892 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2893 #undef _FILE_OFFSET_BITS
2895 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2900 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2901 #define _FILE_OFFSET_BITS 64
2902 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2904 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2907 system_process_attributes (Lisp_Object pid
)
2909 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2914 struct psinfo pinfo
;
2917 int proc_id
, uid
, gid
;
2918 Lisp_Object attrs
= Qnil
;
2919 Lisp_Object decoded_cmd
, tem
;
2920 struct gcpro gcpro1
, gcpro2
;
2921 EMACS_INT uid_eint
, gid_eint
;
2923 CHECK_NUMBER_OR_FLOAT (pid
);
2924 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2925 sprintf (procfn
, "/proc/%u", proc_id
);
2926 if (stat (procfn
, &st
) < 0)
2929 GCPRO2 (attrs
, decoded_cmd
);
2933 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2935 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2937 pw
= getpwuid (uid
);
2940 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2944 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2946 gr
= getgrgid (gid
);
2949 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2951 strcpy (fn
, procfn
);
2952 procfn_end
= fn
+ strlen (fn
);
2953 strcpy (procfn_end
, "/psinfo");
2954 fd
= emacs_open (fn
, O_RDONLY
, 0);
2956 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2958 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2959 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2960 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2964 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2965 state_str
[1] = '\0';
2966 tem
= build_string (state_str
);
2967 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2970 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2971 need to get a string from it. */
2973 /* FIXME: missing: Qtpgid */
2985 Are they available? */
2987 attrs
= Fcons (Fcons (Qtime
,
2988 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
2989 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
2990 make_number (pinfo
.pr_time
.tv_nsec
))),
2993 attrs
= Fcons (Fcons (Qctime
,
2994 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
2995 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
2996 make_number (pinfo
.pr_ctime
.tv_nsec
))),
2999 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3000 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3001 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3003 attrs
= Fcons (Fcons (Qstart
,
3004 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3005 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3006 make_number (pinfo
.pr_start
.tv_nsec
))),
3008 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3009 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3011 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3012 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3013 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3016 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3017 strlen (pinfo
.pr_fname
)),
3018 Vlocale_coding_system
, 0);
3019 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3021 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3022 strlen (pinfo
.pr_psargs
)),
3023 Vlocale_coding_system
, 0);
3024 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3034 /* The WINDOWSNT implementation is in w32.c.
3035 The MSDOS implementation is in dosfns.c. */
3036 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3039 system_process_attributes (Lisp_Object pid
)
3044 #endif /* !defined (WINDOWSNT) */