1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
29 #endif /* HAVE_PWD_H */
32 #endif /* HAVE_LIMITS_H */
36 #include "sysselect.h"
37 #include "blockinput.h"
41 #define write sys_write
46 #endif /* not WINDOWSNT */
48 #include <sys/types.h>
55 #define setpgrp setpgid
59 /* Get SI_SRPC_DOMAIN, if it is available. */
60 #ifdef HAVE_SYS_SYSTEMINFO_H
61 #include <sys/systeminfo.h>
64 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
68 #include <sys/param.h>
77 #ifdef HAVE_SYS_UTSNAME_H
78 #include <sys/utsname.h>
80 #endif /* HAVE_SYS_UTSNAME_H */
85 #include "termhooks.h"
88 #include "dispextern.h"
90 #include "cm.h" /* for reset_sys_modes */
94 /* In process.h which conflicts with the local copy. */
96 int _cdecl
_spawnlp (int, const char *, const char *, ...);
97 int _cdecl
_getpid (void);
98 extern char *getwd (char *);
101 #include "syssignal.h"
108 #ifndef HAVE_STRUCT_UTIMBUF
109 /* We want to use utime rather than utimes, but we couldn't find the
110 structure declaration. We'll use the traditional one. */
118 /* Declare here, including term.h is problematic on some systems. */
119 extern void tputs (const char *, int, int (*)(int));
121 static const int baud_convert
[] =
123 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
124 1800, 2400, 4800, 9600, 19200, 38400
127 void croak (char *) NO_RETURN
;
129 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
131 SIGMASKTYPE sigprocmask_set
;
134 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
136 /* Return the current working directory. Returns NULL on errors.
137 Any other returned value must be freed with free. This is used
138 only when get_current_dir_name is not defined on the system. */
140 get_current_dir_name (void)
144 struct stat dotstat
, pwdstat
;
145 /* If PWD is accurate, use it instead of calling getwd. PWD is
146 sometimes a nicer name, and using it may avoid a fatal error if a
147 parent directory is searchable but not readable. */
148 if ((pwd
= getenv ("PWD")) != 0
149 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
150 && stat (pwd
, &pwdstat
) == 0
151 && stat (".", &dotstat
) == 0
152 && dotstat
.st_ino
== pwdstat
.st_ino
153 && dotstat
.st_dev
== pwdstat
.st_dev
155 && strlen (pwd
) < MAXPATHLEN
159 buf
= (char *) malloc (strlen (pwd
) + 1);
167 size_t buf_size
= 1024;
168 buf
= (char *) malloc (buf_size
);
173 if (getcwd (buf
, buf_size
) == buf
)
177 int tmp_errno
= errno
;
183 buf
= (char *) realloc (buf
, buf_size
);
191 /* We need MAXPATHLEN here. */
192 buf
= (char *) malloc (MAXPATHLEN
+ 1);
195 if (getwd (buf
) == NULL
)
197 int tmp_errno
= errno
;
209 /* Discard pending input on all input descriptors. */
212 discard_tty_input (void)
215 struct emacs_tty buf
;
220 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
221 while (dos_keyread () != -1)
223 #else /* not MSDOS */
225 struct tty_display_info
*tty
;
226 for (tty
= tty_list
; tty
; tty
= tty
->next
)
228 if (tty
->input
) /* Is the device suspended? */
230 emacs_get_tty (fileno (tty
->input
), &buf
);
231 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
235 #endif /* not MSDOS */
236 #endif /* not WINDOWSNT */
242 /* Arrange for character C to be read as the next input from
244 XXX What if we have multiple ttys?
250 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
253 /* Should perhaps error if in batch mode */
255 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
256 #else /* no TIOCSTI */
257 error ("Cannot stuff terminal input characters in this version of Unix");
258 #endif /* no TIOCSTI */
264 init_baud_rate (int fd
)
274 #else /* not DOS_NT */
279 emacs_ospeed
= cfgetospeed (&sg
);
280 #endif /* not DOS_NT */
283 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
284 ? baud_convert
[emacs_ospeed
] : 9600);
291 int wait_debugging
; /* Set nonzero to make following function work under dbx
292 (at least for bsd). */
295 wait_for_termination_signal (void)
299 /* Wait for subprocess with process id `pid' to terminate and
300 make sure it will get eliminated (not remain forever as a zombie) */
303 wait_for_termination (int pid
)
307 #if defined (BSD_SYSTEM) || defined (HPUX)
308 /* Note that kill returns -1 even if the process is just a zombie now.
309 But inevitably a SIGCHLD interrupt should be generated
310 and child_sig will do wait3 and make the process go away. */
311 /* There is some indication that there is a bug involved with
312 termination of subprocesses, perhaps involving a kernel bug too,
313 but no idea what it is. Just as a hunch we signal SIGCHLD to see
314 if that causes the problem to go away or get worse. */
315 sigsetmask (sigmask (SIGCHLD
));
316 if (0 > kill (pid
, 0))
318 sigsetmask (SIGEMPTYMASK
);
319 kill (getpid (), SIGCHLD
);
325 sigpause (SIGEMPTYMASK
);
326 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
330 #else /* not WINDOWSNT */
331 sigblock (sigmask (SIGCHLD
));
333 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
335 sigunblock (sigmask (SIGCHLD
));
339 sigsuspend (&empty_mask
);
340 #endif /* not WINDOWSNT */
341 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
346 * flush any pending output
347 * (may flush input as well; it does not matter the way we use it)
351 flush_pending_output (int channel
)
353 /* FIXME: maybe this function should be removed */
356 /* Set up the terminal at the other end of a pseudo-terminal that
357 we will be controlling an inferior through.
358 It should not echo or do line-editing, since that is done
359 in Emacs. No padding needed for insertion into an Emacs buffer. */
362 child_setup_tty (int out
)
367 emacs_get_tty (out
, &s
);
368 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
369 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
371 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
372 Some versions of GNU Hurd do not have FFDLY? */
374 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
375 /* No output delays */
377 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
378 /* No output delays */
381 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
382 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
384 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
387 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
390 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
392 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
393 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
394 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
395 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
398 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
401 #ifdef SIGNALS_VIA_CHARACTERS
402 /* the QUIT and INTR character are used in process_send_signal
403 so set them here to something useful. */
404 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
405 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
406 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
407 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
408 #endif /* not SIGNALS_VIA_CHARACTERS */
411 /* Also, PTY overloads NUL and BREAK.
412 don't ignore break, but don't signal either, so it looks like NUL. */
413 s
.main
.c_iflag
&= ~IGNBRK
;
414 s
.main
.c_iflag
&= ~BRKINT
;
415 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
416 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
417 would force it to 0377. That looks like duplicated code. */
418 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
421 /* We originally enabled ICANON (and set VEOF to 04), and then had
422 proces.c send additional EOF chars to flush the output when faced
423 with long lines, but this leads to weird effects when the
424 subprocess has disabled ICANON and ends up seeing those spurious
425 extra EOFs. So we don't send EOFs any more in
426 process.c:send_process. First we tried to disable ICANON by
427 default, so if a subsprocess sets up ICANON, it's his problem (or
428 the Elisp package that talks to it) to deal with lines that are
429 too long. But this disables some features, such as the ability
430 to send EOF signals. So we re-enabled ICANON but there is no
431 more "send eof to flush" going on (which is wrong and unportable
432 in itself). The correct way to handle too much output is to
433 buffer what could not be written and then write it again when
434 select returns ok for writing. This has it own set of
435 problems. Write is now asynchronous, is that a problem? How much
436 do we buffer, and what do we do when that limit is reached? */
438 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
439 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
440 #if 0 /* These settings only apply to non-ICANON mode. */
441 s
.main
.c_cc
[VMIN
] = 1;
442 s
.main
.c_cc
[VTIME
] = 0;
445 emacs_set_tty (out
, &s
, 0);
446 #endif /* not WINDOWSNT */
448 #endif /* not MSDOS */
451 /* Record a signal code and the handler for it. */
455 SIGTYPE (*handler
) (int);
458 static void save_signal_handlers (struct save_signal
*);
459 static void restore_signal_handlers (struct save_signal
*);
461 /* Suspend the Emacs process; give terminal to its superior. */
466 #if defined (SIGTSTP) && !defined (MSDOS)
469 int pgrp
= EMACS_GETPGRP (0);
470 EMACS_KILLPG (pgrp
, SIGTSTP
);
473 #else /* No SIGTSTP */
474 /* On a system where suspending is not implemented,
475 instead fork a subshell and let it talk directly to the terminal
479 #endif /* no SIGTSTP */
482 /* Fork a subshell. */
487 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
489 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
492 struct save_signal saved_handlers
[5];
494 unsigned char *str
= 0;
497 saved_handlers
[0].code
= SIGINT
;
498 saved_handlers
[1].code
= SIGQUIT
;
499 saved_handlers
[2].code
= SIGTERM
;
501 saved_handlers
[3].code
= SIGIO
;
502 saved_handlers
[4].code
= 0;
504 saved_handlers
[3].code
= 0;
507 /* Mentioning current_buffer->buffer would mean including buffer.h,
508 which somehow wedges the hp compiler. So instead... */
510 dir
= intern ("default-directory");
511 if (NILP (Fboundp (dir
)))
513 dir
= Fsymbol_value (dir
);
517 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
518 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
520 memcpy (str
, SDATA (dir
), len
);
521 if (str
[len
- 1] != '/') str
[len
++] = '/';
527 save_signal_handlers (saved_handlers
);
528 synch_process_alive
= 1;
532 error ("Can't spawn subshell");
539 #ifdef DOS_NT /* MW, Aug 1993 */
542 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
545 sh
= (char *) egetenv ("SHELL");
549 /* Use our buffer's default directory for the subshell. */
551 chdir ((char *) str
);
553 close_process_descs (); /* Close Emacs's pipes/ptys */
555 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
557 char *epwd
= getenv ("PWD");
558 char old_pwd
[MAXPATHLEN
+1+4];
560 /* If PWD is set, pass it with corrected value. */
563 strcpy (old_pwd
, epwd
);
564 if (str
[len
- 1] == '/')
566 setenv ("PWD", str
, 1);
571 putenv (old_pwd
); /* restore previous value */
573 #else /* not MSDOS */
575 /* Waits for process completion */
576 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
579 write (1, "Can't execute subshell", 22);
580 #else /* not WINDOWSNT */
581 execlp (sh
, sh
, (char *) 0);
582 write (1, "Can't execute subshell", 22);
584 #endif /* not WINDOWSNT */
585 #endif /* not MSDOS */
588 /* Do this now if we did not do it before. */
590 save_signal_handlers (saved_handlers
);
591 synch_process_alive
= 1;
595 wait_for_termination (pid
);
597 restore_signal_handlers (saved_handlers
);
598 synch_process_alive
= 0;
602 save_signal_handlers (struct save_signal
*saved_handlers
)
604 while (saved_handlers
->code
)
606 saved_handlers
->handler
607 = (SIGTYPE (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
613 restore_signal_handlers (struct save_signal
*saved_handlers
)
615 while (saved_handlers
->code
)
617 signal (saved_handlers
->code
, saved_handlers
->handler
);
623 /* If SIGIO is broken, don't do anything. */
640 unrequest_sigio (void)
647 int old_fcntl_flags
[MAXDESC
];
653 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
654 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
656 interrupts_deferred
= 0;
663 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
667 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
668 /* XXX Uhm, FASYNC is not used anymore here. */
669 /* XXX Yeah, but you need it for SIGIO, don't you? */
678 sigunblock (sigmask (SIGWINCH
));
680 sigunblock (sigmask (SIGIO
));
682 interrupts_deferred
= 0;
686 unrequest_sigio (void)
691 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
697 sigblock (sigmask (SIGWINCH
));
699 sigblock (sigmask (SIGIO
));
700 interrupts_deferred
= 1;
703 #else /* no FASYNC */
709 if (noninteractive
|| read_socket_hook
)
712 croak ("request_sigio");
716 unrequest_sigio (void)
718 if (noninteractive
|| read_socket_hook
)
721 croak ("unrequest_sigio");
730 /* Getting and setting emacs_tty structures. */
732 /* Set *TC to the parameters associated with the terminal FD.
733 Return zero if all's well, or -1 if we ran into an error we
734 couldn't deal with. */
736 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
738 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
740 /* We have those nifty POSIX tcmumbleattr functions. */
741 memset (&settings
->main
, 0, sizeof (settings
->main
));
742 if (tcgetattr (fd
, &settings
->main
) < 0)
746 /* We have survived the tempest. */
751 /* Set the parameters of the tty on FD according to the contents of
752 *SETTINGS. If FLUSHP is non-zero, we discard input.
753 Return 0 if all went well, and -1 if anything failed. */
756 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
758 /* Set the primary parameters - baud rate, character size, etcetera. */
761 /* We have those nifty POSIX tcmumbleattr functions.
762 William J. Smith <wjs@wiis.wang.com> writes:
763 "POSIX 1003.1 defines tcsetattr to return success if it was
764 able to perform any of the requested actions, even if some
765 of the requested actions could not be performed.
766 We must read settings back to ensure tty setup properly.
767 AIX requires this to keep tty from hanging occasionally." */
768 /* This make sure that we don't loop indefinitely in here. */
769 for (i
= 0 ; i
< 10 ; i
++)
770 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
781 memset (&new, 0, sizeof (new));
782 /* Get the current settings, and see if they're what we asked for. */
783 tcgetattr (fd
, &new);
784 /* We cannot use memcmp on the whole structure here because under
785 * aix386 the termios structure has some reserved field that may
788 if ( new.c_iflag
== settings
->main
.c_iflag
789 && new.c_oflag
== settings
->main
.c_oflag
790 && new.c_cflag
== settings
->main
.c_cflag
791 && new.c_lflag
== settings
->main
.c_lflag
792 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
799 /* We have survived the tempest. */
806 int old_fcntl_owner
[MAXDESC
];
807 #endif /* F_SETOWN */
809 /* This may also be defined in stdio,
810 but if so, this does no harm,
811 and using the same name avoids wasting the other one's space. */
814 unsigned char _sobuf
[BUFSIZ
+8];
819 /* Initialize the terminal mode on all tty devices that are currently
823 init_all_sys_modes (void)
825 struct tty_display_info
*tty
;
826 for (tty
= tty_list
; tty
; tty
= tty
->next
)
827 init_sys_modes (tty
);
830 /* Initialize the terminal mode on the given tty device. */
833 init_sys_modes (struct tty_display_info
*tty_out
)
835 struct emacs_tty tty
;
837 Vtty_erase_char
= Qnil
;
842 if (!tty_out
->output
)
843 return; /* The tty is suspended. */
845 if (! tty_out
->old_tty
)
846 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
848 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
850 tty
= *tty_out
->old_tty
;
852 #if !defined (DOS_NT)
853 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
855 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
856 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
857 #ifdef INLCR /* I'm just being cautious,
858 since I can't check how widespread INLCR is--rms. */
859 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
862 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
864 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
865 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
867 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
869 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
870 if (tty_out
->flow_control
)
872 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
874 tty
.main
.c_iflag
&= ~IXANY
;
878 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
879 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
881 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
883 if (tty_out
->meta_key
)
885 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
886 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
889 if (tty_out
->input
== stdin
)
891 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
892 /* Set up C-g for both SIGQUIT and SIGINT.
893 We don't know which we will get, but we handle both alike
894 so which one it really gives us does not matter. */
895 tty
.main
.c_cc
[VQUIT
] = quit_char
;
899 /* We normally don't get interrupt or quit signals from tty
900 devices other than our controlling terminal; therefore,
901 we must handle C-g as normal input. Unfortunately, this
902 means that the interrupt and quit feature must be
903 disabled on secondary ttys, or we would not even see the
906 Note that even though emacsclient could have special code
907 to pass SIGINT to Emacs, we should _not_ enable
908 interrupt/quit keys for emacsclient frames. This means
909 that we can't break out of loops in C code from a
910 secondary tty frame, but we can always decide what
911 display the C-g came from, which is more important from a
912 usability point of view. (Consider the case when two
913 people work together using the same Emacs instance.) */
914 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
915 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
917 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
918 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
920 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
925 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
928 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
930 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
931 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
934 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
937 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
938 #endif /* VREPRINT */
940 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
943 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
944 #endif /* VDISCARD */
946 if (tty_out
->flow_control
)
949 tty
.main
.c_cc
[VSTART
] = '\021';
952 tty
.main
.c_cc
[VSTOP
] = '\023';
958 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
961 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
966 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
967 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
968 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
969 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
970 if (tty_out
->flow_control
)
973 tty
.main
.c_cc
[VSTART
] = '\021';
976 tty
.main
.c_cc
[VSTOP
] = '\023';
979 /* Also, PTY overloads NUL and BREAK.
980 don't ignore break, but don't signal either, so it looks like NUL.
981 This really serves a purpose only if running in an XTERM window
982 or via TELNET or the like, but does no harm elsewhere. */
983 tty
.main
.c_iflag
&= ~IGNBRK
;
984 tty
.main
.c_iflag
&= ~BRKINT
;
986 #endif /* not DOS_NT */
988 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
989 if (!tty_out
->term_initted
)
990 internal_terminal_init ();
994 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
996 /* This code added to insure that, if flow-control is not to be used,
997 we have an unlocked terminal at the start. */
1000 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1003 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1006 #if !defined (DOS_NT)
1008 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1013 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1014 if (interrupt_input
)
1016 old_fcntl_owner
[fileno (tty_out
->input
)] =
1017 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1018 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1019 init_sigio (fileno (tty_out
->input
));
1021 if (gpm_tty
== tty_out
)
1023 /* Arrange for mouse events to give us SIGIO signals. */
1024 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1025 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1026 init_sigio (gpm_fd
);
1028 #endif /* HAVE_GPM */
1030 #endif /* F_GETOWN */
1031 #endif /* F_SETFL */
1034 /* This symbol is defined on recent USG systems.
1035 Someone says without this call USG won't really buffer the file
1036 even with a call to setbuf. */
1037 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1039 setbuf (tty_out
->output
, (char *) _sobuf
);
1042 if (tty_out
->terminal
->set_terminal_modes_hook
)
1043 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1045 if (!tty_out
->term_initted
)
1047 Lisp_Object tail
, frame
;
1048 FOR_EACH_FRAME (tail
, frame
)
1050 /* XXX This needs to be revised. */
1051 if (FRAME_TERMCAP_P (XFRAME (frame
))
1052 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1053 init_frame_faces (XFRAME (frame
));
1057 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1059 /* We used to call "direct_output_forward_char(0)" here,
1060 but it's not clear why, since it may not do anything anyway. */
1064 Lisp_Object tail
, frame
;
1066 FOR_EACH_FRAME (tail
, frame
)
1068 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1069 || FRAME_MSDOS_P (XFRAME (frame
)))
1070 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1071 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1075 tty_out
->term_initted
= 1;
1078 /* Return nonzero if safe to use tabs in output.
1079 At the time this is called, init_sys_modes has not been done yet. */
1082 tabs_safe_p (int fd
)
1084 struct emacs_tty etty
;
1086 emacs_get_tty (fd
, &etty
);
1089 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1090 #else /* not TABDLY */
1092 #endif /* not TABDLY */
1098 /* Get terminal size from system.
1099 Store number of lines into *HEIGHTP and width into *WIDTHP.
1100 We store 0 if there's no valid information. */
1103 get_tty_size (int fd
, int *widthp
, int *heightp
)
1109 struct winsize size
;
1111 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1112 *widthp
= *heightp
= 0;
1115 *widthp
= size
.ws_col
;
1116 *heightp
= size
.ws_row
;
1122 /* SunOS - style. */
1123 struct ttysize size
;
1125 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1126 *widthp
= *heightp
= 0;
1129 *widthp
= size
.ts_cols
;
1130 *heightp
= size
.ts_lines
;
1135 *widthp
= ScreenCols ();
1136 *heightp
= ScreenRows ();
1137 #else /* system doesn't know size */
1141 #endif /* not SunOS-style */
1142 #endif /* not BSD-style */
1145 /* Set the logical window size associated with descriptor FD
1146 to HEIGHT and WIDTH. This is used mainly with ptys. */
1149 set_window_size (int fd
, int height
, int width
)
1154 struct winsize size
;
1155 size
.ws_row
= height
;
1156 size
.ws_col
= width
;
1158 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1159 return 0; /* error */
1166 /* SunOS - style. */
1167 struct ttysize size
;
1168 size
.ts_lines
= height
;
1169 size
.ts_cols
= width
;
1171 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1177 #endif /* not SunOS-style */
1178 #endif /* not BSD-style */
1183 /* Prepare all terminal devices for exiting Emacs. */
1186 reset_all_sys_modes (void)
1188 struct tty_display_info
*tty
;
1189 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1190 reset_sys_modes (tty
);
1193 /* Prepare the terminal for closing it; move the cursor to the
1194 bottom of the frame, turn off interrupt-driven I/O, etc. */
1197 reset_sys_modes (struct tty_display_info
*tty_out
)
1204 if (!tty_out
->term_initted
)
1207 if (!tty_out
->output
)
1208 return; /* The tty is suspended. */
1210 /* Go to and clear the last line of the terminal. */
1212 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1214 /* Code adapted from tty_clear_end_of_line. */
1215 if (tty_out
->TS_clr_line
)
1217 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1220 { /* have to do it the hard way */
1222 tty_turn_off_insert (tty_out
);
1224 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1226 fputc (' ', tty_out
->output
);
1230 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1231 fflush (tty_out
->output
);
1233 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1234 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1237 /* Avoid possible loss of output when changing terminal modes. */
1238 fsync (fileno (tty_out
->output
));
1242 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1243 if (interrupt_input
)
1245 reset_sigio (fileno (tty_out
->input
));
1246 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1247 old_fcntl_owner
[fileno (tty_out
->input
)]);
1249 #endif /* F_SETOWN */
1251 fcntl (fileno (tty_out
->input
), F_SETFL
,
1252 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1254 #endif /* F_SETFL */
1256 if (tty_out
->old_tty
)
1257 while (emacs_set_tty (fileno (tty_out
->input
),
1258 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1261 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1269 /* Set up the proper status flags for use of a pty. */
1274 /* I'm told that TOICREMOTE does not mean control chars
1275 "can't be sent" but rather that they don't have
1276 input-editing or signaling effects.
1277 That should be good, because we have other ways
1278 to do those things in Emacs.
1279 However, telnet mode seems not to work on 4.2.
1280 So TIOCREMOTE is turned off now. */
1282 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1283 will hang. In particular, the "timeout" feature (which
1284 causes a read to return if there is no data available)
1285 does this. Also it is known that telnet mode will hang
1286 in such a way that Emacs must be stopped (perhaps this
1287 is the same problem).
1289 If TIOCREMOTE is turned off, then there is a bug in
1290 hp-ux which sometimes loses data. Apparently the
1291 code which blocks the master process when the internal
1292 buffer fills up does not work. Other than this,
1293 though, everything else seems to work fine.
1295 Since the latter lossage is more benign, we may as well
1296 lose that way. -- cph */
1298 #if defined(UNIX98_PTYS)
1301 ioctl (fd
, FIONBIO
, &on
);
1306 #endif /* HAVE_PTYS */
1309 #include <sys/socket.h>
1311 #endif /* HAVE_SOCKETS */
1314 #ifndef HAVE_H_ERRNO
1317 #endif /* TRY_AGAIN */
1320 init_system_name (void)
1322 #ifndef HAVE_GETHOSTNAME
1325 Vsystem_name
= build_string (uts
.nodename
);
1326 #else /* HAVE_GETHOSTNAME */
1327 unsigned int hostname_size
= 256;
1328 char *hostname
= (char *) alloca (hostname_size
);
1330 /* Try to get the host name; if the buffer is too short, try
1331 again. Apparently, the only indication gethostname gives of
1332 whether the buffer was large enough is the presence or absence
1333 of a '\0' in the string. Eech. */
1336 gethostname (hostname
, hostname_size
- 1);
1337 hostname
[hostname_size
- 1] = '\0';
1339 /* Was the buffer large enough for the '\0'? */
1340 if (strlen (hostname
) < hostname_size
- 1)
1343 hostname_size
<<= 1;
1344 hostname
= (char *) alloca (hostname_size
);
1347 /* Turn the hostname into the official, fully-qualified hostname.
1348 Don't do this if we're going to dump; this can confuse system
1349 libraries on some machines and make the dumped emacs core dump. */
1352 #endif /* not CANNOT_DUMP */
1353 if (! strchr (hostname
, '.'))
1356 #ifdef HAVE_GETADDRINFO
1357 struct addrinfo
*res
;
1358 struct addrinfo hints
;
1361 memset (&hints
, 0, sizeof (hints
));
1362 hints
.ai_socktype
= SOCK_STREAM
;
1363 hints
.ai_flags
= AI_CANONNAME
;
1365 for (count
= 0;; count
++)
1367 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1368 || ret
!= EAI_AGAIN
)
1373 Fsleep_for (make_number (1), Qnil
);
1378 struct addrinfo
*it
= res
;
1381 char *fqdn
= it
->ai_canonname
;
1382 if (fqdn
&& strchr (fqdn
, '.')
1383 && strcmp (fqdn
, "localhost.localdomain") != 0)
1389 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1390 strcpy (hostname
, it
->ai_canonname
);
1394 #else /* !HAVE_GETADDRINFO */
1396 for (count
= 0;; count
++)
1402 hp
= gethostbyname (hostname
);
1404 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1411 Fsleep_for (make_number (1), Qnil
);
1416 char *fqdn
= (char *) hp
->h_name
;
1418 if (!strchr (fqdn
, '.'))
1420 /* We still don't have a fully qualified domain name.
1421 Try to find one in the list of alternate names */
1422 char **alias
= hp
->h_aliases
;
1424 && (!strchr (*alias
, '.')
1425 || !strcmp (*alias
, "localhost.localdomain")))
1432 #endif /* !HAVE_GETADDRINFO */
1434 #endif /* HAVE_SOCKETS */
1435 Vsystem_name
= build_string (hostname
);
1436 #endif /* HAVE_GETHOSTNAME */
1439 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1440 if (*p
== ' ' || *p
== '\t')
1445 /* POSIX signals support - DJB */
1446 /* Anyone with POSIX signals should have ANSI C declarations */
1448 sigset_t empty_mask
, full_mask
;
1453 sys_signal (int signal_number
, signal_handler_t action
)
1455 struct sigaction new_action
, old_action
;
1456 sigemptyset (&new_action
.sa_mask
);
1457 new_action
.sa_handler
= action
;
1458 new_action
.sa_flags
= 0;
1459 #if defined (SA_RESTART)
1460 /* Emacs mostly works better with restartable system services. If this
1461 flag exists, we probably want to turn it on here.
1462 However, on some systems this resets the timeout of `select'
1463 which means that `select' never finishes if it keeps getting signals.
1464 BROKEN_SA_RESTART is defined on those systems. */
1465 /* It's not clear why the comment above says "mostly works better". --Stef
1466 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1467 for pending input so we need long-running syscalls to be interrupted
1468 after a signal that sets the interrupt_input_pending flag. */
1469 /* Non-interactive keyboard input goes through stdio, where we always
1470 want restartable system calls. */
1471 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1474 new_action
.sa_flags
= SA_RESTART
;
1476 sigaction (signal_number
, &new_action
, &old_action
);
1477 return (old_action
.sa_handler
);
1480 #endif /* WINDOWSNT */
1483 /* If we're compiling with GCC, we don't need this function, since it
1484 can be written as a macro. */
1486 sys_sigmask (int sig
)
1489 sigemptyset (&mask
);
1490 sigaddset (&mask
, sig
);
1495 /* I'd like to have these guys return pointers to the mask storage in here,
1496 but there'd be trouble if the code was saving multiple masks. I'll be
1497 safe and pass the structure. It normally won't be more than 2 bytes
1501 sys_sigblock (sigset_t new_mask
)
1504 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1509 sys_sigunblock (sigset_t new_mask
)
1512 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1517 sys_sigsetmask (sigset_t new_mask
)
1520 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1525 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1526 static char *my_sys_siglist
[NSIG
];
1530 # define sys_siglist my_sys_siglist
1536 sigemptyset (&empty_mask
);
1537 sigfillset (&full_mask
);
1539 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1543 sys_siglist
[SIGABRT
] = "Aborted";
1546 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1549 sys_siglist
[SIGALRM
] = "Alarm clock";
1552 sys_siglist
[SIGBUS
] = "Bus error";
1555 sys_siglist
[SIGCLD
] = "Child status changed";
1558 sys_siglist
[SIGCHLD
] = "Child status changed";
1561 sys_siglist
[SIGCONT
] = "Continued";
1564 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1567 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1570 sys_siglist
[SIGEMT
] = "Emulation trap";
1573 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1576 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1579 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1582 sys_siglist
[SIGHUP
] = "Hangup";
1585 sys_siglist
[SIGILL
] = "Illegal instruction";
1588 sys_siglist
[SIGINT
] = "Interrupt";
1591 sys_siglist
[SIGIO
] = "I/O possible";
1594 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1597 sys_siglist
[SIGIOT
] = "IOT trap";
1600 sys_siglist
[SIGKILL
] = "Killed";
1603 sys_siglist
[SIGLOST
] = "Resource lost";
1606 sys_siglist
[SIGLWP
] = "SIGLWP";
1609 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1612 sys_siglist
[SIGWIND
] = "SIGPHONE";
1615 sys_siglist
[SIGPIPE
] = "Broken pipe";
1618 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1621 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1624 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1627 sys_siglist
[SIGPWR
] = "Power-fail restart";
1630 sys_siglist
[SIGQUIT
] = "Quit";
1633 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1636 sys_siglist
[SIGSAK
] = "Secure attention";
1639 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1642 sys_siglist
[SIGSOUND
] = "Sound completed";
1645 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1648 sys_siglist
[SIGSTP
] = "Stopped (user)";
1651 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1654 sys_siglist
[SIGTERM
] = "Terminated";
1657 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1660 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1663 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1666 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1669 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1672 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1675 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1678 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1681 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1684 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1687 sys_siglist
[SIGWINCH
] = "Window size changed";
1690 sys_siglist
[SIGWIND
] = "SIGWIND";
1693 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1696 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1699 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1708 /* Figure out how many bits the system's random number generator uses.
1709 `random' and `lrand48' are assumed to return 31 usable bits.
1710 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1711 so we'll shift it and treat it like the 15-bit USG `rand'. */
1715 # define RAND_BITS 31
1716 # else /* !HAVE_RANDOM */
1717 # ifdef HAVE_LRAND48
1718 # define RAND_BITS 31
1719 # define random lrand48
1720 # else /* !HAVE_LRAND48 */
1721 # define RAND_BITS 15
1722 # if RAND_MAX == 32767
1723 # define random rand
1724 # else /* RAND_MAX != 32767 */
1725 # if RAND_MAX == 2147483647
1726 # define random() (rand () >> 16)
1727 # else /* RAND_MAX != 2147483647 */
1729 # define random rand
1731 # define random() (rand () >> 16)
1733 # endif /* RAND_MAX != 2147483647 */
1734 # endif /* RAND_MAX != 32767 */
1735 # endif /* !HAVE_LRAND48 */
1736 # endif /* !HAVE_RANDOM */
1737 #endif /* !RAND_BITS */
1740 seed_random (long int arg
)
1743 srandom ((unsigned int)arg
);
1745 # ifdef HAVE_LRAND48
1748 srand ((unsigned int)arg
);
1754 * Build a full Emacs-sized word out of whatever we've got.
1755 * This suffices even for a 64-bit architecture with a 15-bit rand.
1760 long val
= random ();
1761 #if VALBITS > RAND_BITS
1762 val
= (val
<< RAND_BITS
) ^ random ();
1763 #if VALBITS > 2*RAND_BITS
1764 val
= (val
<< RAND_BITS
) ^ random ();
1765 #if VALBITS > 3*RAND_BITS
1766 val
= (val
<< RAND_BITS
) ^ random ();
1767 #if VALBITS > 4*RAND_BITS
1768 val
= (val
<< RAND_BITS
) ^ random ();
1769 #endif /* need at least 5 */
1770 #endif /* need at least 4 */
1771 #endif /* need at least 3 */
1772 #endif /* need at least 2 */
1773 return val
& ((1L << VALBITS
) - 1);
1776 #ifndef HAVE_STRERROR
1782 extern char *sys_errlist
[];
1783 extern int sys_nerr
;
1785 if (errnum
>= 0 && errnum
< sys_nerr
)
1786 return sys_errlist
[errnum
];
1787 return (char *) "Unknown error";
1789 #endif /* not WINDOWSNT */
1790 #endif /* ! HAVE_STRERROR */
1793 emacs_open (const char *path
, int oflag
, int mode
)
1795 register int rtnval
;
1797 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1798 && (errno
== EINTR
))
1804 emacs_close (int fd
)
1807 register int rtnval
;
1809 while ((rtnval
= close (fd
)) == -1
1810 && (errno
== EINTR
))
1813 /* If close is interrupted SunOS 4.1 may or may not have closed the
1814 file descriptor. If it did the second close will fail with
1815 errno = EBADF. That means we have succeeded. */
1816 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1823 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
1825 register int rtnval
;
1827 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1828 && (errno
== EINTR
))
1834 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
1836 register int rtnval
, bytes_written
;
1842 rtnval
= write (fildes
, buf
, nbyte
);
1849 /* I originally used `QUIT' but that might causes files to
1850 be truncated if you hit C-g in the middle of it. --Stef */
1851 process_pending_signals ();
1856 return (bytes_written
? bytes_written
: -1);
1861 bytes_written
+= rtnval
;
1863 return (bytes_written
);
1868 * All of the following are for USG.
1870 * On USG systems the system calls are INTERRUPTIBLE by signals
1871 * that the user program has elected to catch. Thus the system call
1872 * must be retried in these cases. To handle this without massive
1873 * changes in the source code, we remap the standard system call names
1874 * to names for our own functions in sysdep.c that do the system call
1875 * with retries. Actually, for portability reasons, it is good
1876 * programming practice, as this example shows, to limit all actual
1877 * system calls to a single occurrence in the source. Sure, this
1878 * adds an extra level of function call overhead but it is almost
1879 * always negligible. Fred Fish, Unisoft Systems Inc.
1883 * Warning, this function may not duplicate 4.2 action properly
1884 * under error conditions.
1888 /* In 4.1, param.h fails to define this. */
1889 #define MAXPATHLEN 1024
1895 getwd (char *pathname
)
1897 char *npath
, *spath
;
1898 extern char *getcwd (char *, size_t);
1900 BLOCK_INPUT
; /* getcwd uses malloc */
1901 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1907 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1908 up to first slash. Should be harmless on other systems. */
1909 while (*npath
&& *npath
!= '/')
1911 strcpy (pathname
, npath
);
1912 free (spath
); /* getcwd uses malloc */
1917 #endif /* HAVE_GETWD */
1920 * Emulate rename using unlink/link. Note that this is
1921 * only partially correct. Also, doesn't enforce restriction
1922 * that files be of same type (regular->regular, dir->dir, etc).
1928 rename (const char *from
, const char *to
)
1930 if (access (from
, 0) == 0)
1933 if (link (from
, to
) == 0)
1934 if (unlink (from
) == 0)
1943 #if defined(HPUX) && !defined(HAVE_PERROR)
1945 /* HPUX curses library references perror, but as far as we know
1946 it won't be called. Anyway this definition will do for now. */
1952 #endif /* HPUX and not HAVE_PERROR */
1957 * Emulate BSD dup2. First close newd if it already exists.
1958 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1959 * until we are, then close the unsuccessful ones.
1963 dup2 (int oldd
, int newd
)
1965 register int fd
, ret
;
1970 return fcntl (oldd
, F_DUPFD
, newd
);
1977 ret
= dup2 (old
,new);
1983 #endif /* not HAVE_DUP2 */
1986 * Gettimeofday. Simulate as much as possible. Only accurate
1987 * to nearest second. Emacs doesn't use tzp so ignore it for now.
1988 * Only needed when subprocesses are defined.
1991 #ifndef HAVE_GETTIMEOFDAY
1995 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
1997 extern long time (long);
1999 tp
->tv_sec
= time ((long *)0);
2002 tzp
->tz_minuteswest
= -1;
2007 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2010 * This function will go away as soon as all the stubs fixed. (fnf)
2014 croak (char *badfunc
)
2016 printf ("%s not yet implemented\r\n", badfunc
);
2017 reset_all_sys_modes ();
2023 /* Directory routines for systems that don't have them. */
2025 #ifdef HAVE_DIRENT_H
2029 #if !defined (HAVE_CLOSEDIR)
2032 closedir (DIR *dirp
/* stream from opendir */)
2036 rtnval
= emacs_close (dirp
->dd_fd
);
2037 xfree ((char *) dirp
);
2041 #endif /* not HAVE_CLOSEDIR */
2042 #endif /* HAVE_DIRENT_H */
2046 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2049 struct timeval tv
[2];
2052 return utimes (filename
, tv
);
2053 #else /* not HAVE_UTIMES */
2055 utb
.actime
= EMACS_SECS (atime
);
2056 utb
.modtime
= EMACS_SECS (mtime
);
2057 return utime (filename
, &utb
);
2058 #endif /* not HAVE_UTIMES */
2061 /* mkdir and rmdir functions, for systems which don't have them. */
2065 * Written by Robert Rother, Mariah Corporation, August 1985.
2067 * If you want it, it's yours. All I ask in return is that if you
2068 * figure out how to do this in a Bourne Shell script you send me
2070 * sdcsvax!rmr or rmr@uscd
2072 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2073 * subroutine. 11Mar86; hoptoad!gnu
2075 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2076 * subroutine didn't return EEXIST. It does now.
2083 mkdir (char *dpath
, int dmode
)
2085 int cpid
, status
, fd
;
2086 struct stat statbuf
;
2088 if (stat (dpath
, &statbuf
) == 0)
2090 errno
= EEXIST
; /* Stat worked, so it already exists */
2094 /* If stat fails for a reason other than non-existence, return error */
2095 if (errno
!= ENOENT
)
2098 synch_process_alive
= 1;
2099 switch (cpid
= fork ())
2102 case -1: /* Error in fork */
2103 return (-1); /* Errno is set already */
2105 case 0: /* Child process */
2107 * Cheap hack to set mode of new directory. Since this
2108 * child process is going away anyway, we zap its umask.
2109 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2110 * directory. Does anybody care?
2112 status
= umask (0); /* Get current umask */
2113 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2114 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2121 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2122 _exit (-1); /* Can't exec /bin/mkdir */
2124 default: /* Parent process */
2125 wait_for_termination (cpid
);
2128 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2129 || synch_process_termsig
!= 0)
2131 errno
= EIO
; /* We don't know why, but */
2132 return -1; /* /bin/mkdir failed */
2137 #endif /* not HAVE_MKDIR */
2143 int cpid
, status
, fd
;
2144 struct stat statbuf
;
2146 if (stat (dpath
, &statbuf
) != 0)
2148 /* Stat just set errno. We don't have to */
2152 synch_process_alive
= 1;
2153 switch (cpid
= fork ())
2156 case -1: /* Error in fork */
2157 return (-1); /* Errno is set already */
2159 case 0: /* Child process */
2160 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2167 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2168 _exit (-1); /* Can't exec /bin/rmdir */
2170 default: /* Parent process */
2171 wait_for_termination (cpid
);
2174 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2175 || synch_process_termsig
!= 0)
2177 errno
= EIO
; /* We don't know why, but */
2178 return -1; /* /bin/rmdir failed */
2183 #endif /* !HAVE_RMDIR */
2188 memset (void *b
, int n
, size_t length
)
2190 unsigned char *p
= b
;
2191 while (length
-- > 0)
2195 #endif /* !HAVE_MEMSET */
2199 memcpy (void *b1
, void *b2
, size_t length
)
2201 unsigned char *p1
= b1
, *p2
= b2
;
2202 while (length
-- > 0)
2206 #endif /* !HAVE_MEMCPY */
2208 #ifndef HAVE_MEMMOVE
2210 memmove (void *b1
, void *b2
, size_t length
)
2212 unsigned char *p1
= b1
, *p2
= b2
;
2213 if (p1
< p2
|| p1
>= p2
+ length
)
2214 while (length
-- > 0)
2220 while (length
-- > 0)
2225 #endif /* !HAVE_MEMCPY */
2229 memcmp (void *b1
, void *b2
, size_t length
)
2231 unsigned char *p1
= b1
, *p2
= b2
;
2232 while (length
-- > 0)
2234 return p1
[-1] < p2
[-1] ? -1 : 1;
2237 #endif /* !HAVE_MEMCMP */
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(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2343 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2345 /* Configure bytesize. */
2346 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2347 tem
= Fplist_get (contact
, QCbytesize
);
2349 tem
= Fplist_get (p
->childp
, QCbytesize
);
2351 tem
= make_number (8);
2353 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2354 error (":bytesize must be nil (8), 7, or 8");
2355 summary
[0] = XINT (tem
) + '0';
2356 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2357 attr
.c_cflag
&= ~CSIZE
;
2358 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2360 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2361 if (XINT (tem
) != 8)
2362 error ("Bytesize cannot be changed");
2364 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2366 /* Configure parity. */
2367 if (!NILP (Fplist_member (contact
, QCparity
)))
2368 tem
= Fplist_get (contact
, QCparity
);
2370 tem
= Fplist_get (p
->childp
, QCparity
);
2371 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2372 error (":parity must be nil (no parity), `even', or `odd'");
2373 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2374 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2375 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2380 else if (EQ (tem
, Qeven
))
2383 attr
.c_cflag
|= PARENB
;
2384 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2386 else if (EQ (tem
, Qodd
))
2389 attr
.c_cflag
|= (PARENB
| PARODD
);
2390 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2393 /* Don't error on no parity, which should be set by cfmakeraw. */
2395 error ("Parity cannot be configured");
2397 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2399 /* Configure stopbits. */
2400 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2401 tem
= Fplist_get (contact
, QCstopbits
);
2403 tem
= Fplist_get (p
->childp
, QCstopbits
);
2405 tem
= make_number (1);
2407 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2408 error (":stopbits must be nil (1 stopbit), 1, or 2");
2409 summary
[2] = XINT (tem
) + '0';
2410 #if defined (CSTOPB)
2411 attr
.c_cflag
&= ~CSTOPB
;
2412 if (XINT (tem
) == 2)
2413 attr
.c_cflag
|= CSTOPB
;
2415 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2416 if (XINT (tem
) != 1)
2417 error ("Stopbits cannot be configured");
2419 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2421 /* Configure flowcontrol. */
2422 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2423 tem
= Fplist_get (contact
, QCflowcontrol
);
2425 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2426 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2427 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2428 #if defined (CRTSCTS)
2429 attr
.c_cflag
&= ~CRTSCTS
;
2431 #if defined (CNEW_RTSCTS)
2432 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2434 #if defined (IXON) && defined (IXOFF)
2435 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2439 /* Already configured. */
2441 else if (EQ (tem
, Qhw
))
2443 #if defined (CRTSCTS)
2444 attr
.c_cflag
|= CRTSCTS
;
2445 #elif defined (CNEW_RTSCTS)
2446 attr
.c_cflag
|= CNEW_RTSCTS
;
2448 error ("Hardware flowcontrol (RTS/CTS) not supported");
2451 else if (EQ (tem
, Qsw
))
2453 #if defined (IXON) && defined (IXOFF)
2454 attr
.c_iflag
|= (IXON
| IXOFF
);
2456 error ("Software flowcontrol (XON/XOFF) not supported");
2459 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2461 /* Activate configuration. */
2462 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2464 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2466 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2467 p
->childp
= childp2
;
2470 #endif /* not DOS_NT */
2472 /* System depended enumeration of and access to system processes a-la ps(1). */
2476 /* Process enumeration and access via /proc. */
2479 list_system_processes (void)
2481 Lisp_Object procdir
, match
, proclist
, next
;
2482 struct gcpro gcpro1
, gcpro2
;
2483 register Lisp_Object tail
;
2485 GCPRO2 (procdir
, match
);
2486 /* For every process on the system, there's a directory in the
2487 "/proc" pseudo-directory whose name is the numeric ID of that
2489 procdir
= build_string ("/proc");
2490 match
= build_string ("[0-9]+");
2491 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2493 /* `proclist' gives process IDs as strings. Destructively convert
2494 each string into a number. */
2495 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2498 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2502 /* directory_files_internal returns the files in reverse order; undo
2504 proclist
= Fnreverse (proclist
);
2508 /* The WINDOWSNT implementation is in w32.c.
2509 The MSDOS implementation is in dosfns.c. */
2510 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2513 list_system_processes (void)
2518 #endif /* !defined (WINDOWSNT) */
2522 time_from_jiffies (unsigned long long tval
, long hz
,
2523 time_t *sec
, unsigned *usec
)
2525 unsigned long long ullsec
;
2529 tval
-= ullsec
* hz
;
2530 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2532 *usec
= tval
* 1000000 / hz
;
2534 *usec
= tval
/ (hz
/ 1000000);
2538 ltime_from_jiffies (unsigned long long tval
, long hz
)
2543 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2545 return list3 (make_number ((sec
>> 16) & 0xffff),
2546 make_number (sec
& 0xffff),
2547 make_number (usec
));
2551 get_up_time (time_t *sec
, unsigned *usec
)
2558 fup
= fopen ("/proc/uptime", "r");
2562 double uptime
, idletime
;
2564 /* The numbers in /proc/uptime use C-locale decimal point, but
2565 we already set ourselves to the C locale (see `fixup_locale'
2567 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2570 *usec
= (uptime
- *sec
) * 1000000;
2577 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2578 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2581 procfs_ttyname (int rdev
)
2584 char name
[PATH_MAX
];
2587 fdev
= fopen ("/proc/tty/drivers", "r");
2592 unsigned long minor_beg
, minor_end
;
2593 char minor
[25]; /* 2 32-bit numbers + dash */
2596 while (!feof (fdev
) && !ferror (fdev
))
2598 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2599 && major
== MAJOR (rdev
))
2601 minor_beg
= strtoul (minor
, &endp
, 0);
2603 minor_end
= minor_beg
;
2604 else if (*endp
== '-')
2605 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2609 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2611 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2619 return build_string (name
);
2622 static unsigned long
2623 procfs_get_total_memory (void)
2626 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2629 fmem
= fopen ("/proc/meminfo", "r");
2633 unsigned long entry_value
;
2634 char entry_name
[20]; /* the longest I saw is 13+1 */
2636 while (!feof (fmem
) && !ferror (fmem
))
2638 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2639 && strcmp (entry_name
, "MemTotal:") == 0)
2641 retval
= entry_value
;
2652 system_process_attributes (Lisp_Object pid
)
2654 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2658 long clocks_per_sec
;
2660 char procbuf
[1025], *p
, *q
;
2663 const char *cmd
= NULL
;
2664 char *cmdline
= NULL
;
2665 size_t cmdsize
= 0, cmdline_size
;
2667 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2668 unsigned long long utime
, stime
, cutime
, cstime
, start
;
2669 long priority
, nice
, rss
;
2670 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2673 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2675 Lisp_Object attrs
= Qnil
;
2676 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2677 struct gcpro gcpro1
, gcpro2
;
2678 EMACS_INT uid_eint
, gid_eint
;
2680 CHECK_NUMBER_OR_FLOAT (pid
);
2681 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2682 sprintf (procfn
, "/proc/%u", proc_id
);
2683 if (stat (procfn
, &st
) < 0)
2686 GCPRO2 (attrs
, decoded_cmd
);
2690 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2692 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2694 pw
= getpwuid (uid
);
2697 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2701 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2703 gr
= getgrgid (gid
);
2706 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2708 strcpy (fn
, procfn
);
2709 procfn_end
= fn
+ strlen (fn
);
2710 strcpy (procfn_end
, "/stat");
2711 fd
= emacs_open (fn
, O_RDONLY
, 0);
2712 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2714 procbuf
[nread
] = '\0';
2717 p
= strchr (p
, '(');
2720 q
= strrchr (p
+ 1, ')');
2735 /* Command name is encoded in locale-coding-system; decode it. */
2736 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2737 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2738 Vlocale_coding_system
, 0);
2739 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2743 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2745 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2746 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2747 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2748 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2749 &utime
, &stime
, &cutime
, &cstime
,
2750 &priority
, &nice
, &thcount
, &start
, &vsize
, &rss
);
2755 state_str
[1] = '\0';
2756 tem
= build_string (state_str
);
2757 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2759 /* Stops GCC whining about limited range of data type. */
2764 thcount_eint
= thcount
;
2765 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2766 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2767 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2768 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2769 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2770 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2771 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2772 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2773 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2774 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2775 if (clocks_per_sec
< 0)
2776 clocks_per_sec
= 100;
2777 attrs
= Fcons (Fcons (Qutime
,
2778 ltime_from_jiffies (utime
, clocks_per_sec
)),
2780 attrs
= Fcons (Fcons (Qstime
,
2781 ltime_from_jiffies (stime
, clocks_per_sec
)),
2783 attrs
= Fcons (Fcons (Qtime
,
2784 ltime_from_jiffies (stime
+utime
, clocks_per_sec
)),
2786 attrs
= Fcons (Fcons (Qcutime
,
2787 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2789 attrs
= Fcons (Fcons (Qcstime
,
2790 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2792 attrs
= Fcons (Fcons (Qctime
,
2793 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2795 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2796 attrs
= Fcons (Fcons (Qnice
, make_number (nice
)), attrs
);
2797 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2798 EMACS_GET_TIME (tnow
);
2799 get_up_time (&sec
, &usec
);
2800 EMACS_SET_SECS (telapsed
, sec
);
2801 EMACS_SET_USECS (telapsed
, usec
);
2802 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2803 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2804 EMACS_SET_SECS (tstart
, sec
);
2805 EMACS_SET_USECS (tstart
, usec
);
2806 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2807 attrs
= Fcons (Fcons (Qstart
,
2809 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2811 (EMACS_SECS (tstart
) & 0xffff),
2813 (EMACS_USECS (tstart
)))),
2815 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2816 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2817 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2818 attrs
= Fcons (Fcons (Qetime
,
2820 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2822 (EMACS_SECS (telapsed
) & 0xffff),
2824 (EMACS_USECS (telapsed
)))),
2826 time_from_jiffies (utime
+ stime
, clocks_per_sec
, &sec
, &usec
);
2827 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2830 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2831 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2834 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2841 strcpy (procfn_end
, "/cmdline");
2842 fd
= emacs_open (fn
, O_RDONLY
, 0);
2845 for (cmdline_size
= 0; emacs_read (fd
, &c
, 1) == 1; cmdline_size
++)
2847 if (isspace (c
) || c
== '\\')
2848 cmdline_size
++; /* for later quoting, see below */
2852 cmdline
= xmalloc (cmdline_size
+ 1);
2853 lseek (fd
, 0L, SEEK_SET
);
2855 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2856 cmdline
[nread
++] = '\0';
2859 /* Assigning zero to `nread' makes us skip the following
2860 two loops, assign zero to cmdline_size, and enter the
2861 following `if' clause that handles unknown command
2865 /* We don't want trailing null characters. */
2866 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2868 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2870 /* Escape-quote whitespace and backslashes. */
2871 if (isspace (*p
) || *p
== '\\')
2873 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2877 else if (*p
== '\0')
2880 cmdline_size
= nread
;
2887 cmdsize
= strlen (cmd
);
2888 cmdline_size
= cmdsize
+ 2;
2889 cmdline
= xmalloc (cmdline_size
+ 1);
2890 strcpy (cmdline
, "[");
2891 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2894 /* Command line is encoded in locale-coding-system; decode it. */
2895 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2896 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2897 Vlocale_coding_system
, 0);
2899 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2906 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2908 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2909 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2910 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2911 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2912 #undef _FILE_OFFSET_BITS
2914 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2919 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2920 #define _FILE_OFFSET_BITS 64
2921 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2924 system_process_attributes (Lisp_Object pid
)
2926 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2931 struct psinfo pinfo
;
2934 int proc_id
, uid
, gid
;
2935 Lisp_Object attrs
= Qnil
;
2936 Lisp_Object decoded_cmd
, tem
;
2937 struct gcpro gcpro1
, gcpro2
;
2938 EMACS_INT uid_eint
, gid_eint
;
2940 CHECK_NUMBER_OR_FLOAT (pid
);
2941 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2942 sprintf (procfn
, "/proc/%u", proc_id
);
2943 if (stat (procfn
, &st
) < 0)
2946 GCPRO2 (attrs
, decoded_cmd
);
2950 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2952 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2954 pw
= getpwuid (uid
);
2957 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2961 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2963 gr
= getgrgid (gid
);
2966 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2968 strcpy (fn
, procfn
);
2969 procfn_end
= fn
+ strlen (fn
);
2970 strcpy (procfn_end
, "/psinfo");
2971 fd
= emacs_open (fn
, O_RDONLY
, 0);
2973 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2975 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2976 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2977 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2981 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2982 state_str
[1] = '\0';
2983 tem
= build_string (state_str
);
2984 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2987 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2988 need to get a string from it. */
2990 /* FIXME: missing: Qtpgid */
3002 Are they available? */
3004 attrs
= Fcons (Fcons (Qtime
,
3005 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3006 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3007 make_number (pinfo
.pr_time
.tv_nsec
))),
3010 attrs
= Fcons (Fcons (Qctime
,
3011 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3012 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3013 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3016 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3017 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3018 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3020 attrs
= Fcons (Fcons (Qstart
,
3021 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3022 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3023 make_number (pinfo
.pr_start
.tv_nsec
))),
3025 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3026 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3028 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3029 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3030 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3033 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3034 strlen (pinfo
.pr_fname
)),
3035 Vlocale_coding_system
, 0);
3036 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3038 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3039 strlen (pinfo
.pr_psargs
)),
3040 Vlocale_coding_system
, 0);
3041 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3051 /* The WINDOWSNT implementation is in w32.c.
3052 The MSDOS implementation is in dosfns.c. */
3053 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3056 system_process_attributes (Lisp_Object pid
)
3061 #endif /* !defined (WINDOWSNT) */