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
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/>. */
32 /* Including stdlib.h isn't necessarily enough to get srandom
33 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
35 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
36 some systems, and an unsigned long on others, like FreeBSD
38 extern void srandom
P_ ((unsigned int));
42 /* The w32 build defines select stuff in w32.h, which is included by
43 sys/select.h (included below). */
45 #include "sysselect.h"
48 #include "blockinput.h"
52 #define write sys_write
57 #endif /* not WINDOWSNT */
59 /* Does anyone other than VMS need this? */
61 #define sys_fwrite fwrite
66 #include <sys/types.h>
71 #if !defined (USG) || defined (BSD_PGRPS)
73 #define setpgrp setpgid
77 /* Get SI_SRPC_DOMAIN, if it is available. */
78 #ifdef HAVE_SYS_SYSTEMINFO_H
79 #include <sys/systeminfo.h>
82 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
86 #include <sys/param.h>
90 extern unsigned start
__asm__ ("start");
112 #include <sys/file.h>
120 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
124 #include <sys/file.h>
132 #include <sys/ioctl.h>
138 #ifdef BROKEN_TIOCGWINSZ
144 #include <sys/utsname.h>
146 #if defined (TIOCGWINSZ)
148 #include <sys/sioctl.h>
151 #include <sys/stream.h>
152 #include <sys/ptem.h>
154 #endif /* TIOCGWINSZ */
157 extern int quit_char
;
159 #include "keyboard.h"
162 #include "termhooks.h"
163 #include "termchar.h"
164 #include "termopts.h"
165 #include "dispextern.h"
167 #include "cm.h" /* for reset_sys_modes */
171 /* In process.h which conflicts with the local copy. */
173 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
174 int _CRTAPI1
_getpid (void);
175 extern char *getwd (char *);
178 #ifdef NONSYSTEM_DIR_LIBRARY
180 #endif /* NONSYSTEM_DIR_LIBRARY */
182 #include "syssignal.h"
189 #ifndef HAVE_STRUCT_UTIMBUF
190 /* We want to use utime rather than utimes, but we couldn't find the
191 structure declaration. We'll use the traditional one. */
199 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
205 #define LNOFLSH 0100000
208 static int baud_convert
[] =
213 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
214 1800, 2400, 4800, 9600, 19200, 38400
221 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
223 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
231 void croak
P_ ((char *)) NO_RETURN
;
234 void hft_init
P_ ((struct tty_display_info
*));
235 void hft_reset
P_ ((struct tty_display_info
*));
238 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
240 SIGMASKTYPE sigprocmask_set
;
243 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
245 /* Return the current working directory. Returns NULL on errors.
246 Any other returned value must be freed with free. This is used
247 only when get_current_dir_name is not defined on the system. */
249 get_current_dir_name ()
253 struct stat dotstat
, pwdstat
;
254 /* If PWD is accurate, use it instead of calling getwd. PWD is
255 sometimes a nicer name, and using it may avoid a fatal error if a
256 parent directory is searchable but not readable. */
257 if ((pwd
= getenv ("PWD")) != 0
258 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
259 && stat (pwd
, &pwdstat
) == 0
260 && stat (".", &dotstat
) == 0
261 && dotstat
.st_ino
== pwdstat
.st_ino
262 && dotstat
.st_dev
== pwdstat
.st_dev
264 && strlen (pwd
) < MAXPATHLEN
268 buf
= (char *) malloc (strlen (pwd
) + 1);
276 size_t buf_size
= 1024;
277 buf
= (char *) malloc (buf_size
);
282 if (getcwd (buf
, buf_size
) == buf
)
286 int tmp_errno
= errno
;
292 buf
= (char *) realloc (buf
, buf_size
);
300 /* We need MAXPATHLEN here. */
301 buf
= (char *) malloc (MAXPATHLEN
+ 1);
304 if (getwd (buf
) == NULL
)
306 int tmp_errno
= errno
;
318 /* Discard pending input on all input descriptors. */
324 struct emacs_tty buf
;
331 SYS$
QIOW (0, fileno (CURTTY()->input
), IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
332 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
335 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
336 while (dos_keyread () != -1)
338 #else /* not MSDOS */
340 struct tty_display_info
*tty
;
341 for (tty
= tty_list
; tty
; tty
= tty
->next
)
343 if (tty
->input
) /* Is the device suspended? */
345 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
346 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
350 #endif /* not MSDOS */
352 #endif /* not WINDOWSNT */
358 /* Arrange for character C to be read as the next input from
360 XXX What if we have multiple ttys?
366 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
369 /* Should perhaps error if in batch mode */
371 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
372 #else /* no TIOCSTI */
373 error ("Cannot stuff terminal input characters in this version of Unix");
374 #endif /* no TIOCSTI */
380 init_baud_rate (int fd
)
388 #else /* not DOS_NT */
392 SYS$
QIOW (0, fd
, IO$_SENSEMODE
, &sg
, 0, 0,
393 &sg
.class, 12, 0, 0, 0, 0 );
394 emacs_ospeed
= sg
.xmit_baud
;
401 emacs_ospeed
= cfgetospeed (&sg
);
402 #else /* neither VMS nor TERMIOS */
410 ioctl (fd
, TCGETA
, &sg
);
412 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
413 #else /* neither VMS nor TERMIOS nor TERMIO */
416 sg
.sg_ospeed
= B9600
;
417 if (ioctl (fd
, TIOCGETP
, &sg
) < 0)
419 emacs_ospeed
= sg
.sg_ospeed
;
420 #endif /* not HAVE_TERMIO */
421 #endif /* not HAVE_TERMIOS */
423 #endif /* not DOS_NT */
426 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
427 ? baud_convert
[emacs_ospeed
] : 9600);
435 set_exclusive_use (fd
)
439 ioctl (fd
, FIOCLEX
, 0);
441 /* Ok to do nothing if this feature does not exist */
446 wait_without_blocking ()
449 wait3 (0, WNOHANG
| WUNTRACED
, 0);
451 croak ("wait_without_blocking");
453 synch_process_alive
= 0;
456 #endif /* not subprocesses */
458 int wait_debugging
; /* Set nonzero to make following function work under dbx
459 (at least for bsd). */
462 wait_for_termination_signal ()
465 /* Wait for subprocess with process id `pid' to terminate and
466 make sure it will get eliminated (not remain forever as a zombie) */
469 wait_for_termination (pid
)
478 status
= SYS$
FORCEX (&pid
, 0, 0);
481 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
482 /* Note that kill returns -1 even if the process is just a zombie now.
483 But inevitably a SIGCHLD interrupt should be generated
484 and child_sig will do wait3 and make the process go away. */
485 /* There is some indication that there is a bug involved with
486 termination of subprocesses, perhaps involving a kernel bug too,
487 but no idea what it is. Just as a hunch we signal SIGCHLD to see
488 if that causes the problem to go away or get worse. */
489 sigsetmask (sigmask (SIGCHLD
));
490 if (0 > kill (pid
, 0))
492 sigsetmask (SIGEMPTYMASK
);
493 kill (getpid (), SIGCHLD
);
499 sigpause (SIGEMPTYMASK
);
500 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
501 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
502 sigblock (sigmask (SIGCHLD
));
504 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
506 sigunblock (sigmask (SIGCHLD
));
510 sigsuspend (&empty_mask
);
511 #else /* not POSIX_SIGNALS */
512 #ifdef HAVE_SYSV_SIGPAUSE
514 if (0 > kill (pid
, 0))
520 #else /* not HAVE_SYSV_SIGPAUSE */
524 #else /* not WINDOWSNT */
525 if (0 > kill (pid
, 0))
527 /* Using sleep instead of pause avoids timing error.
528 If the inferior dies just before the sleep,
529 we lose just one second. */
531 #endif /* not WINDOWSNT */
532 #endif /* not HAVE_SYSV_SIGPAUSE */
533 #endif /* not POSIX_SIGNALS */
534 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
536 #else /* not subprocesses */
539 #else /* not __DJGPP__ > 1 */
541 if (kill (pid
, 0) < 0)
547 if (status
== pid
|| status
== -1)
550 #endif /* not __DJGPP__ > 1*/
551 #endif /* not subprocesses */
558 * flush any pending output
559 * (may flush input as well; it does not matter the way we use it)
563 flush_pending_output (channel
)
567 /* If we try this, we get hit with SIGTTIN, because
568 the child's tty belongs to the child's pgrp. */
571 ioctl (channel
, TCFLSH
, 1);
575 /* 3rd arg should be ignored
576 but some 4.2 kernels actually want the address of an int
577 and nonzero means something different. */
578 ioctl (channel
, TIOCFLUSH
, &zero
);
585 /* Set up the terminal at the other end of a pseudo-terminal that
586 we will be controlling an inferior through.
587 It should not echo or do line-editing, since that is done
588 in Emacs. No padding needed for insertion into an Emacs buffer. */
591 child_setup_tty (out
)
597 EMACS_GET_TTY (out
, &s
);
599 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
600 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
601 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
603 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
604 Some versions of GNU Hurd do not have FFDLY? */
606 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
607 /* No output delays */
609 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
610 /* No output delays */
613 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
614 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
615 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
616 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
617 #ifdef INLCR /* Just being cautious, since I can't check how
618 widespread INLCR is--rms. */
619 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
623 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
626 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
629 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
631 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
632 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
634 /* Said to be unnecessary: */
635 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
636 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
639 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
640 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
641 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
642 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
645 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
648 #ifdef SIGNALS_VIA_CHARACTERS
649 /* the QUIT and INTR character are used in process_send_signal
650 so set them here to something useful. */
651 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
652 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
653 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
654 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
655 #endif /* not SIGNALS_VIA_CHARACTERS */
658 /* AIX enhanced edit loses NULs, so disable it */
661 s
.main
.c_iflag
&= ~ASCEDIT
;
663 /* Also, PTY overloads NUL and BREAK.
664 don't ignore break, but don't signal either, so it looks like NUL. */
665 s
.main
.c_iflag
&= ~IGNBRK
;
666 s
.main
.c_iflag
&= ~BRKINT
;
667 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
668 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
669 would force it to 0377. That looks like duplicated code. */
670 #ifndef SIGNALS_VIA_CHARACTERS
671 /* QUIT and INTR work better as signals, so disable character forms */
672 s
.main
.c_cc
[VQUIT
] = CDISABLE
;
673 s
.main
.c_cc
[VINTR
] = CDISABLE
;
674 s
.main
.c_lflag
&= ~ISIG
;
675 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
676 s
.main
.c_cc
[VEOL
] = CDISABLE
;
677 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
680 #else /* not HAVE_TERMIO */
682 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
684 s
.main
.sg_flags
|= LPASS8
;
685 s
.main
.sg_erase
= 0377;
686 s
.main
.sg_kill
= 0377;
687 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
689 #endif /* not HAVE_TERMIO */
691 EMACS_SET_TTY (out
, &s
, 0);
697 #endif /* not DOS_NT */
701 #endif /* subprocesses */
703 /* Record a signal code and the handler for it. */
707 SIGTYPE (*handler
) P_ ((int));
710 static void save_signal_handlers
P_ ((struct save_signal
*));
711 static void restore_signal_handlers
P_ ((struct save_signal
*));
713 /* Suspend the Emacs process; give terminal to its superior. */
719 /* "Foster" parentage allows emacs to return to a subprocess that attached
720 to the current emacs as a cheaper than starting a whole new process. This
721 is set up by KEPTEDITOR.COM. */
722 unsigned long parent_id
, foster_parent_id
;
725 fpid_string
= getenv ("EMACS_PARENT_PID");
726 if (fpid_string
!= NULL
)
728 sscanf (fpid_string
, "%x", &foster_parent_id
);
729 if (foster_parent_id
!= 0)
730 parent_id
= foster_parent_id
;
732 parent_id
= getppid ();
735 parent_id
= getppid ();
737 xfree (fpid_string
); /* On VMS, this was malloc'd */
739 if (parent_id
&& parent_id
!= 0xffffffff)
741 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
742 int status
= LIB$
ATTACH (&parent_id
) & 1;
743 signal (SIGINT
, oldsig
);
752 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
753 d_prompt
.a
= "Emacs: "; /* Just a reminder */
754 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
759 #if defined (SIGTSTP) && !defined (MSDOS)
762 int pgrp
= EMACS_GETPGRP (0);
763 EMACS_KILLPG (pgrp
, SIGTSTP
);
766 #else /* No SIGTSTP */
767 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
768 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
769 kill (getpid (), SIGQUIT
);
771 #else /* No SIGTSTP or USG_JOBCTRL */
773 /* On a system where suspending is not implemented,
774 instead fork a subshell and let it talk directly to the terminal
778 #endif /* no USG_JOBCTRL */
779 #endif /* no SIGTSTP */
783 /* Fork a subshell. */
789 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
791 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
794 struct save_signal saved_handlers
[5];
796 unsigned char *str
= 0;
799 saved_handlers
[0].code
= SIGINT
;
800 saved_handlers
[1].code
= SIGQUIT
;
801 saved_handlers
[2].code
= SIGTERM
;
803 saved_handlers
[3].code
= SIGIO
;
804 saved_handlers
[4].code
= 0;
806 saved_handlers
[3].code
= 0;
809 /* Mentioning current_buffer->buffer would mean including buffer.h,
810 which somehow wedges the hp compiler. So instead... */
812 dir
= intern ("default-directory");
813 if (NILP (Fboundp (dir
)))
815 dir
= Fsymbol_value (dir
);
819 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
820 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
822 bcopy (SDATA (dir
), str
, len
);
823 if (str
[len
- 1] != '/') str
[len
++] = '/';
830 save_signal_handlers (saved_handlers
);
831 synch_process_alive
= 1;
832 #endif /* __DJGPP__ > 1 */
836 error ("Can't spawn subshell");
843 #ifdef DOS_NT /* MW, Aug 1993 */
846 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
849 sh
= (char *) egetenv ("SHELL");
853 /* Use our buffer's default directory for the subshell. */
855 chdir ((char *) str
);
858 close_process_descs (); /* Close Emacs's pipes/ptys */
861 #ifdef SET_EMACS_PRIORITY
863 extern EMACS_INT emacs_priority
;
865 if (emacs_priority
< 0)
866 nice (-emacs_priority
);
870 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
872 char *epwd
= getenv ("PWD");
873 char old_pwd
[MAXPATHLEN
+1+4];
875 /* If PWD is set, pass it with corrected value. */
878 strcpy (old_pwd
, epwd
);
879 if (str
[len
- 1] == '/')
881 setenv ("PWD", str
, 1);
886 putenv (old_pwd
); /* restore previous value */
888 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
890 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
892 #else /* not MSDOS */
894 /* Waits for process completion */
895 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
898 write (1, "Can't execute subshell", 22);
899 #else /* not WINDOWSNT */
900 execlp (sh
, sh
, (char *) 0);
901 write (1, "Can't execute subshell", 22);
903 #endif /* not WINDOWSNT */
904 #endif /* not MSDOS */
907 /* Do this now if we did not do it before. */
908 #if !defined (MSDOS) || __DJGPP__ == 1
909 save_signal_handlers (saved_handlers
);
910 synch_process_alive
= 1;
914 wait_for_termination (pid
);
916 restore_signal_handlers (saved_handlers
);
917 synch_process_alive
= 0;
922 save_signal_handlers (saved_handlers
)
923 struct save_signal
*saved_handlers
;
925 while (saved_handlers
->code
)
927 saved_handlers
->handler
928 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
934 restore_signal_handlers (saved_handlers
)
935 struct save_signal
*saved_handlers
;
937 while (saved_handlers
->code
)
939 signal (saved_handlers
->code
, saved_handlers
->handler
);
945 /* If SIGIO is broken, don't do anything. */
962 unrequest_sigio (void)
969 int old_fcntl_flags
[MAXDESC
];
976 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
977 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
979 interrupts_deferred
= 0;
987 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
991 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
992 /* XXX Uhm, FASYNC is not used anymore here. */
993 /* XXX Yeah, but you need it for SIGIO, don't you? */
1002 sigunblock (sigmask (SIGWINCH
));
1004 sigunblock (sigmask (SIGIO
));
1006 interrupts_deferred
= 0;
1010 unrequest_sigio (void)
1015 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
1021 sigblock (sigmask (SIGWINCH
));
1023 sigblock (sigmask (SIGIO
));
1024 interrupts_deferred
= 1;
1027 #else /* no FASYNC */
1033 if (noninteractive
|| read_socket_hook
)
1036 croak ("request_sigio");
1042 if (noninteractive
|| read_socket_hook
)
1045 croak ("unrequest_sigio");
1050 #endif /* F_SETFL */
1053 /* Saving and restoring the process group of Emacs's terminal. */
1057 /* The process group of which Emacs was a member when it initially
1060 If Emacs was in its own process group (i.e. inherited_pgroup ==
1061 getpid ()), then we know we're running under a shell with job
1062 control (Emacs would never be run as part of a pipeline).
1065 If Emacs was not in its own process group, then we know we're
1066 running under a shell (or a caller) that doesn't know how to
1067 separate itself from Emacs (like sh). Emacs must be in its own
1068 process group in order to receive SIGIO correctly. In this
1069 situation, we put ourselves in our own pgroup, forcibly set the
1070 tty's pgroup to our pgroup, and make sure to restore and reinstate
1071 the tty's pgroup just like any other terminal setting. If
1072 inherited_group was not the tty's pgroup, then we'll get a
1073 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1074 it goes foreground in the future, which is what should happen.
1076 This variable is initialized in emacs.c. */
1077 int inherited_pgroup
;
1079 /* Split off the foreground process group to Emacs alone. When we are
1080 in the foreground, but not started in our own process group,
1081 redirect the tty device handle FD to point to our own process
1082 group. We need to be in our own process group to receive SIGIO
1085 narrow_foreground_group (int fd
)
1089 setpgrp (0, inherited_pgroup
);
1091 /* XXX inherited_pgroup should not be zero here, but GTK seems to
1093 if (! inherited_pgroup
)
1094 abort (); /* Should not happen. */
1096 if (inherited_pgroup
!= me
)
1097 EMACS_SET_TTY_PGRP (fd
, &me
); /* XXX This only works on the controlling tty. */
1101 /* Set the tty to our original foreground group. */
1103 widen_foreground_group (int fd
)
1105 if (inherited_pgroup
!= getpid ())
1106 EMACS_SET_TTY_PGRP (fd
, &inherited_pgroup
);
1107 setpgrp (0, inherited_pgroup
);
1110 #endif /* BSD_PGRPS */
1112 /* Getting and setting emacs_tty structures. */
1114 /* Set *TC to the parameters associated with the terminal FD.
1115 Return zero if all's well, or -1 if we ran into an error we
1116 couldn't deal with. */
1118 emacs_get_tty (fd
, settings
)
1120 struct emacs_tty
*settings
;
1122 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1124 /* We have those nifty POSIX tcmumbleattr functions. */
1125 bzero (&settings
->main
, sizeof (settings
->main
));
1126 if (tcgetattr (fd
, &settings
->main
) < 0)
1131 /* The SYSV-style interface? */
1132 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1137 /* Vehemently Monstrous System? :-) */
1138 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1139 &settings
->main
.class, 12, 0, 0, 0, 0)
1145 /* I give up - I hope you have the BSD ioctls. */
1146 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1148 #endif /* not DOS_NT */
1153 /* Suivant - Do we have to get struct ltchars data? */
1155 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1159 /* How about a struct tchars and a wordful of lmode bits? */
1161 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1162 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1166 /* We have survived the tempest. */
1171 /* Set the parameters of the tty on FD according to the contents of
1172 *SETTINGS. If FLUSHP is non-zero, we discard input.
1173 Return 0 if all went well, and -1 if anything failed. */
1176 emacs_set_tty (fd
, settings
, flushp
)
1178 struct emacs_tty
*settings
;
1181 /* Set the primary parameters - baud rate, character size, etcetera. */
1184 /* We have those nifty POSIX tcmumbleattr functions.
1185 William J. Smith <wjs@wiis.wang.com> writes:
1186 "POSIX 1003.1 defines tcsetattr to return success if it was
1187 able to perform any of the requested actions, even if some
1188 of the requested actions could not be performed.
1189 We must read settings back to ensure tty setup properly.
1190 AIX requires this to keep tty from hanging occasionally." */
1191 /* This make sure that we don't loop indefinitely in here. */
1192 for (i
= 0 ; i
< 10 ; i
++)
1193 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1204 bzero (&new, sizeof (new));
1205 /* Get the current settings, and see if they're what we asked for. */
1206 tcgetattr (fd
, &new);
1207 /* We cannot use memcmp on the whole structure here because under
1208 * aix386 the termios structure has some reserved field that may
1211 if ( new.c_iflag
== settings
->main
.c_iflag
1212 && new.c_oflag
== settings
->main
.c_oflag
1213 && new.c_cflag
== settings
->main
.c_cflag
1214 && new.c_lflag
== settings
->main
.c_lflag
1215 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1223 /* The SYSV-style interface? */
1224 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1229 /* Vehemently Monstrous System? :-) */
1230 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1231 &settings
->main
.class, 12, 0, 0, 0, 0)
1237 /* I give up - I hope you have the BSD ioctls. */
1238 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1240 #endif /* not DOS_NT */
1246 /* Suivant - Do we have to get struct ltchars data? */
1248 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1252 /* How about a struct tchars and a wordful of lmode bits? */
1254 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1255 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1259 /* We have survived the tempest. */
1266 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1272 int old_fcntl_owner
[MAXDESC
];
1273 #endif /* F_SETOWN */
1275 /* This may also be defined in stdio,
1276 but if so, this does no harm,
1277 and using the same name avoids wasting the other one's space. */
1280 extern char *_sobuf
;
1282 #if defined (USG) || defined (DGUX)
1283 unsigned char _sobuf
[BUFSIZ
+8];
1285 char _sobuf
[BUFSIZ
];
1290 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1293 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1296 /* Initialize the terminal mode on all tty devices that are currently
1300 init_all_sys_modes (void)
1302 struct tty_display_info
*tty
;
1303 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1304 init_sys_modes (tty
);
1307 /* Initialize the terminal mode on the given tty device. */
1310 init_sys_modes (tty_out
)
1311 struct tty_display_info
*tty_out
;
1313 struct emacs_tty tty
;
1317 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1318 extern int (*interrupt_signal
) ();
1322 Vtty_erase_char
= Qnil
;
1327 if (!tty_out
->output
)
1328 return; /* The tty is suspended. */
1332 input_ef
= get_kbd_event_flag ();
1333 /* LIB$GET_EF (&input_ef); */
1334 SYS$
CLREF (input_ef
);
1335 waiting_for_ast
= 0;
1337 timer_ef
= get_timer_event_flag ();
1338 /* LIB$GET_EF (&timer_ef); */
1339 SYS$
CLREF (timer_ef
);
1343 LIB$
GET_EF (&process_ef
);
1344 SYS$
CLREF (process_ef
);
1346 if (input_ef
/ 32 != process_ef
/ 32)
1347 croak ("Input and process event flags in different clusters.");
1349 if (input_ef
/ 32 != timer_ef
/ 32)
1350 croak ("Input and timer event flags in different clusters.");
1352 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1353 ((unsigned) 1 << (process_ef
% 32));
1355 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1356 ((unsigned) 1 << (timer_ef
% 32));
1358 sys_access_reinit ();
1364 /* read_socket_hook is not global anymore. I think doing this
1365 unconditionally will not cause any problems. */
1366 if (! read_socket_hook
&& EQ (Vinitial_window_system
, Qnil
))
1368 narrow_foreground_group (fileno (tty_out
->input
));
1371 if (! tty_out
->old_tty
)
1372 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
1374 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
1376 tty
= *tty_out
->old_tty
;
1378 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1379 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
1381 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1382 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1383 #ifdef INLCR /* I'm just being cautious,
1384 since I can't check how widespread INLCR is--rms. */
1385 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1388 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1390 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1391 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1393 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1395 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1396 if (tty_out
->flow_control
)
1398 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1400 tty
.main
.c_iflag
&= ~IXANY
;
1404 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1405 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1407 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1409 if (tty_out
->meta_key
)
1411 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1412 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1415 if (tty_out
->input
== stdin
)
1417 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1418 /* Set up C-g for both SIGQUIT and SIGINT.
1419 We don't know which we will get, but we handle both alike
1420 so which one it really gives us does not matter. */
1421 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1425 /* We normally don't get interrupt or quit signals from tty
1426 devices other than our controlling terminal; therefore,
1427 we must handle C-g as normal input. Unfortunately, this
1428 means that the interrupt and quit feature must be
1429 disabled on secondary ttys, or we would not even see the
1432 Note that even though emacsclient could have special code
1433 to pass SIGINT to Emacs, we should _not_ enable
1434 interrupt/quit keys for emacsclient frames. This means
1435 that we can't break out of loops in C code from a
1436 secondary tty frame, but we can always decide what
1437 display the C-g came from, which is more important from a
1438 usability point of view. (Consider the case when two
1439 people work together using the same Emacs instance.) */
1440 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
1441 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
1443 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1444 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1446 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1450 #if defined (mips) || defined (HAVE_TCATTR)
1452 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1455 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1456 #endif /* V_DSUSP */
1457 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1458 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1461 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1464 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1465 #endif /* VREPRINT */
1467 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1468 #endif /* VWERASE */
1470 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1471 #endif /* VDISCARD */
1473 if (tty_out
->flow_control
)
1476 tty
.main
.c_cc
[VSTART
] = '\021';
1479 tty
.main
.c_cc
[VSTOP
] = '\023';
1485 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1488 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1491 #endif /* mips or HAVE_TCATTR */
1493 #ifdef SET_LINE_DISCIPLINE
1494 /* Need to explicitly request TERMIODISC line discipline or
1495 Ultrix's termios does not work correctly. */
1496 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1500 /* AIX enhanced edit loses NULs, so disable it. */
1501 tty
.main
.c_line
= 0;
1502 tty
.main
.c_iflag
&= ~ASCEDIT
;
1504 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1505 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1506 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1507 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1508 #endif /* IBMR2AIX */
1509 if (tty_out
->flow_control
)
1512 tty
.main
.c_cc
[VSTART
] = '\021';
1515 tty
.main
.c_cc
[VSTOP
] = '\023';
1518 /* Also, PTY overloads NUL and BREAK.
1519 don't ignore break, but don't signal either, so it looks like NUL.
1520 This really serves a purpose only if running in an XTERM window
1521 or via TELNET or the like, but does no harm elsewhere. */
1522 tty
.main
.c_iflag
&= ~IGNBRK
;
1523 tty
.main
.c_iflag
&= ~BRKINT
;
1525 #else /* if not HAVE_TERMIO */
1527 tty
.main
.tt_char
|= TT$M_NOECHO
;
1529 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1530 if (tty_out
->flow_control
)
1531 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1533 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1534 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1535 #else /* not VMS (BSD, that is) */
1537 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1538 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1540 tty
.main
.sg_flags
|= ANYP
;
1541 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1542 #endif /* not DOS_NT */
1543 #endif /* not VMS (BSD, that is) */
1544 #endif /* not HAVE_TERMIO */
1546 /* If going to use CBREAK mode, we must request C-g to interrupt
1547 and turn off start and stop chars, etc. If not going to use
1548 CBREAK mode, do this anyway so as to turn off local flow
1549 control for user coming over network on 4.2; in this case,
1550 only t_stopc and t_startc really matter. */
1553 /* Note: if not using CBREAK mode, it makes no difference how we
1555 tty
.tchars
= new_tchars
;
1556 tty
.tchars
.t_intrc
= quit_char
;
1557 if (tty_out
->flow_control
)
1559 tty
.tchars
.t_startc
= '\021';
1560 tty
.tchars
.t_stopc
= '\023';
1563 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| tty_out
->old_tty
.lmode
;
1565 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1566 anything, and leaving it in breaks the meta key. Go figure. */
1567 tty
.lmode
&= ~LLITOUT
;
1574 #endif /* HAVE_TCHARS */
1575 #endif /* not HAVE_TERMIO */
1578 tty
.ltchars
= new_ltchars
;
1579 #endif /* HAVE_LTCHARS */
1580 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1581 if (!tty_out
->term_initted
)
1582 internal_terminal_init ();
1586 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1588 /* This code added to insure that, if flow-control is not to be used,
1589 we have an unlocked terminal at the start. */
1592 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1595 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1598 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1600 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1608 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1609 to be only LF. This is the way that is done. */
1612 if (ioctl (1, HFTGETID
, &tty
) != -1)
1613 write (1, "\033[20l", 5);
1619 /* Appears to do nothing when in PASTHRU mode.
1620 SYS$QIOW (0, fileno (tty_out->input), IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1621 interrupt_signal, oob_chars, 0, 0, 0, 0);
1623 queue_kbd_input (0);
1627 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1628 if (interrupt_input
)
1630 old_fcntl_owner
[fileno (tty_out
->input
)] =
1631 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1632 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1633 init_sigio (fileno (tty_out
->input
));
1635 if (gpm_tty
== tty_out
)
1637 /* Arrange for mouse events to give us SIGIO signals. */
1638 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1639 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1640 init_sigio (gpm_fd
);
1642 #endif /* HAVE_GPM */
1644 #endif /* F_GETOWN */
1645 #endif /* F_SETFL */
1648 if (interrupt_input
)
1649 init_sigio (fileno (tty_out
->input
));
1652 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1656 /* This symbol is defined on recent USG systems.
1657 Someone says without this call USG won't really buffer the file
1658 even with a call to setbuf. */
1659 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1661 setbuf (tty_out
->output
, (char *) _sobuf
);
1664 if (tty_out
->terminal
->set_terminal_modes_hook
)
1665 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1667 if (!tty_out
->term_initted
)
1669 Lisp_Object tail
, frame
;
1670 FOR_EACH_FRAME (tail
, frame
)
1672 /* XXX This needs to be revised. */
1673 if (FRAME_TERMCAP_P (XFRAME (frame
))
1674 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1675 init_frame_faces (XFRAME (frame
));
1679 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1681 /* XXX This seems wrong on multi-tty. */
1682 if (display_completed
)
1683 direct_output_forward_char (0);
1687 Lisp_Object tail
, frame
;
1689 FOR_EACH_FRAME (tail
, frame
)
1691 if (FRAME_TERMCAP_P (XFRAME (frame
))
1692 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1693 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1697 tty_out
->term_initted
= 1;
1700 /* Return nonzero if safe to use tabs in output.
1701 At the time this is called, init_sys_modes has not been done yet. */
1704 tabs_safe_p (int fd
)
1706 struct emacs_tty etty
;
1708 EMACS_GET_TTY (fd
, &etty
);
1709 return EMACS_TTY_TABS_OK (&etty
);
1712 /* Get terminal size from system.
1713 Store number of lines into *HEIGHTP and width into *WIDTHP.
1714 We store 0 if there's no valid information. */
1717 get_tty_size (int fd
, int *widthp
, int *heightp
)
1723 struct winsize size
;
1725 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1726 *widthp
= *heightp
= 0;
1729 *widthp
= size
.ws_col
;
1730 *heightp
= size
.ws_row
;
1736 /* SunOS - style. */
1737 struct ttysize size
;
1739 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1740 *widthp
= *heightp
= 0;
1743 *widthp
= size
.ts_cols
;
1744 *heightp
= size
.ts_lines
;
1750 /* Use a fresh channel since the current one may have stale info
1751 (for example, from prior to a suspend); and to avoid a dependency
1752 in the init sequence. */
1754 struct sensemode tty
;
1756 SYS$
ASSIGN (&input_dsc
, &chan
, 0, 0);
1757 SYS$
QIOW (0, chan
, IO$_SENSEMODE
, &tty
, 0, 0,
1758 &tty
.class, 12, 0, 0, 0, 0);
1760 *widthp
= tty
.scr_wid
;
1761 *heightp
= tty
.scr_len
;
1765 *widthp
= ScreenCols ();
1766 *heightp
= ScreenRows ();
1767 #else /* system doesn't know size */
1771 #endif /* not VMS */
1772 #endif /* not SunOS-style */
1773 #endif /* not BSD-style */
1776 /* Set the logical window size associated with descriptor FD
1777 to HEIGHT and WIDTH. This is used mainly with ptys. */
1780 set_window_size (fd
, height
, width
)
1781 int fd
, height
, width
;
1786 struct winsize size
;
1787 size
.ws_row
= height
;
1788 size
.ws_col
= width
;
1790 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1791 return 0; /* error */
1798 /* SunOS - style. */
1799 struct ttysize size
;
1800 size
.ts_lines
= height
;
1801 size
.ts_cols
= width
;
1803 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1809 #endif /* not SunOS-style */
1810 #endif /* not BSD-style */
1815 /* Prepare all terminal devices for exiting Emacs. */
1818 reset_all_sys_modes (void)
1820 struct tty_display_info
*tty
;
1821 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1822 reset_sys_modes (tty
);
1825 /* Prepare the terminal for closing it; move the cursor to the
1826 bottom of the frame, turn off interrupt-driven I/O, etc. */
1829 reset_sys_modes (tty_out
)
1830 struct tty_display_info
*tty_out
;
1837 if (!tty_out
->term_initted
)
1840 if (!tty_out
->output
)
1841 return; /* The tty is suspended. */
1843 /* Go to and clear the last line of the terminal. */
1845 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1847 /* Code adapted from tty_clear_end_of_line. */
1848 if (tty_out
->TS_clr_line
)
1850 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1853 { /* have to do it the hard way */
1855 tty_turn_off_insert (tty_out
);
1857 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1859 fputc (' ', tty_out
->output
);
1863 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1864 fflush (tty_out
->output
);
1866 #if defined (IBMR2AIX) && defined (AIXHFT)
1868 /* HFT devices normally use ^J as a LF/CR. We forced it to
1869 do the LF only. Now, we need to reset it. */
1872 if (ioctl (1, HFTGETID
, &tty
) != -1)
1873 write (1, "\033[20h", 5);
1877 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1878 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1882 /* Avoid possible loss of output when changing terminal modes. */
1883 fsync (fileno (tty_out
->output
));
1888 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1889 if (interrupt_input
)
1891 reset_sigio (fileno (tty_out
->input
));
1892 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1893 old_fcntl_owner
[fileno (tty_out
->input
)]);
1895 #endif /* F_SETOWN */
1897 fcntl (fileno (tty_out
->input
), F_SETFL
,
1898 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1900 #endif /* F_SETFL */
1902 if (interrupt_input
)
1903 reset_sigio (fileno (tty_out
->input
));
1906 if (tty_out
->old_tty
)
1907 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1908 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1911 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1915 #ifdef SET_LINE_DISCIPLINE
1916 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1917 A different old line discipline is therefore not restored, yet.
1918 Restore the old line discipline by hand. */
1919 ioctl (0, TIOCSETD
, &tty_out
->old_tty
.main
.c_line
);
1927 widen_foreground_group (fileno (tty_out
->input
));
1933 /* Set up the proper status flags for use of a pty. */
1939 /* I'm told that TOICREMOTE does not mean control chars
1940 "can't be sent" but rather that they don't have
1941 input-editing or signaling effects.
1942 That should be good, because we have other ways
1943 to do those things in Emacs.
1944 However, telnet mode seems not to work on 4.2.
1945 So TIOCREMOTE is turned off now. */
1947 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1948 will hang. In particular, the "timeout" feature (which
1949 causes a read to return if there is no data available)
1950 does this. Also it is known that telnet mode will hang
1951 in such a way that Emacs must be stopped (perhaps this
1952 is the same problem).
1954 If TIOCREMOTE is turned off, then there is a bug in
1955 hp-ux which sometimes loses data. Apparently the
1956 code which blocks the master process when the internal
1957 buffer fills up does not work. Other than this,
1958 though, everything else seems to work fine.
1960 Since the latter lossage is more benign, we may as well
1961 lose that way. -- cph */
1963 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1966 ioctl (fd
, FIONBIO
, &on
);
1971 #endif /* HAVE_PTYS */
1975 /* Assigning an input channel is done at the start of Emacs execution.
1976 This is called each time Emacs is resumed, also, but does nothing
1977 because input_chain is no longer zero. */
1984 if (fileno (CURTTY ()->input
)) == 0)
1986 status
= SYS$
ASSIGN (&input_dsc
, &fileno (CURTTY ()->input
)), 0, 0);
1992 /* Deassigning the input channel is done before exiting. */
1997 return SYS$
DASSGN (fileno (CURTTY ()->input
)));
2002 /* Request reading one character into the keyboard buffer.
2003 This is done as soon as the buffer becomes empty. */
2009 extern kbd_input_ast ();
2011 waiting_for_ast
= 0;
2013 status
= SYS$
QIO (0, fileno (CURTTY()->input
), IO$_READVBLK
,
2014 &input_iosb
, kbd_input_ast
, 1,
2015 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
2020 /* Ast routine that is called when keyboard input comes in
2021 in accord with the SYS$QIO above. */
2026 register int c
= -1;
2027 int old_errno
= errno
;
2028 extern EMACS_TIME
*input_available_clear_time
;
2030 if (waiting_for_ast
)
2031 SYS$
SETEF (input_ef
);
2032 waiting_for_ast
= 0;
2035 if (input_count
== 25)
2037 printf ("Ast # %d,", input_count
);
2038 printf (" iosb = %x, %x, %x, %x",
2039 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
2042 if (input_iosb
.offset
)
2046 printf (", char = 0%o", c
);
2058 struct input_event e
;
2061 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2062 XSETINT (e
.code
, c
);
2063 e
.frame_or_window
= selected_frame
;
2064 kbd_buffer_store_event (&e
);
2066 if (input_available_clear_time
)
2067 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2071 /* Wait until there is something in kbd_buffer. */
2074 wait_for_kbd_input ()
2076 extern int have_process_input
, process_exited
;
2078 /* If already something, avoid doing system calls. */
2079 if (detect_input_pending ())
2083 /* Clear a flag, and tell ast routine above to set it. */
2084 SYS$
CLREF (input_ef
);
2085 waiting_for_ast
= 1;
2086 /* Check for timing error: ast happened while we were doing that. */
2087 if (!detect_input_pending ())
2089 /* No timing error: wait for flag to be set. */
2090 set_waiting_for_input (0);
2091 SYS$
WFLOR (input_ef
, input_eflist
);
2092 clear_waiting_for_input ();
2093 if (!detect_input_pending ())
2094 /* Check for subprocess input availability */
2096 int dsp
= have_process_input
|| process_exited
;
2098 SYS$
CLREF (process_ef
);
2099 if (have_process_input
)
2100 process_command_input ();
2105 update_mode_lines
++;
2106 prepare_menu_bars ();
2107 redisplay_preserve_echo_area (18);
2111 waiting_for_ast
= 0;
2114 /* Get rid of any pending QIO, when we are about to suspend
2115 or when we want to throw away pending input.
2116 We wait for a positive sign that the AST routine has run
2117 and therefore there is no I/O request queued when we return.
2118 SYS$SETAST is used to avoid a timing error. */
2124 printf ("At end_kbd_input.\n");
2128 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2130 SYS$
CANCEL (fileno (CURTTY()->input
));
2135 /* Clear a flag, and tell ast routine above to set it. */
2136 SYS$
CLREF (input_ef
);
2137 waiting_for_ast
= 1;
2139 SYS$
CANCEL (fileno (CURTTY()->input
));
2141 SYS$
WAITFR (input_ef
);
2142 waiting_for_ast
= 0;
2145 /* Wait for either input available or time interval expiry. */
2148 input_wait_timeout (timeval
)
2149 int timeval
; /* Time to wait, in seconds */
2152 static int zero
= 0;
2153 static int large
= -10000000;
2155 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2157 /* If already something, avoid doing system calls. */
2158 if (detect_input_pending ())
2162 /* Clear a flag, and tell ast routine above to set it. */
2163 SYS$
CLREF (input_ef
);
2164 waiting_for_ast
= 1;
2165 /* Check for timing error: ast happened while we were doing that. */
2166 if (!detect_input_pending ())
2168 /* No timing error: wait for flag to be set. */
2170 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2171 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2173 waiting_for_ast
= 0;
2176 /* The standard `sleep' routine works some other way
2177 and it stops working if you have ever quit out of it.
2178 This one continues to work. */
2184 static int zero
= 0;
2185 static int large
= -10000000;
2187 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2190 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2191 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2212 croak ("request sigio");
2220 croak ("unrequest sigio");
2225 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2230 #ifndef SYSTEM_MALLOC
2237 /* Some systems that cannot dump also cannot implement these. */
2240 * Return the address of the start of the text segment prior to
2241 * doing an unexec. After unexec the return value is undefined.
2242 * See crt0.c for further explanation and _start.
2246 #if !(defined (__NetBSD__) && defined (__ELF__))
2247 #ifndef HAVE_TEXT_START
2252 return ((char *) TEXT_START
);
2254 extern int _start ();
2255 return ((char *) _start
);
2256 #endif /* TEXT_START */
2258 #endif /* not HAVE_TEXT_START */
2262 * Return the address of the start of the data segment prior to
2263 * doing an unexec. After unexec the return value is undefined.
2264 * See crt0.c for further information and definition of data_start.
2266 * Apparently, on BSD systems this is etext at startup. On
2267 * USG systems (swapping) this is highly mmu dependent and
2268 * is also dependent on whether or not the program is running
2269 * with shared text. Generally there is a (possibly large)
2270 * gap between end of text and start of data with shared text.
2272 * On Uniplus+ systems with shared text, data starts at a
2273 * fixed address. Each port (from a given oem) is generally
2274 * different, and the specific value of the start of data can
2275 * be obtained via the UniPlus+ specific "uvar" system call,
2276 * however the method outlined in crt0.c seems to be more portable.
2278 * Probably what will have to happen when a USG unexec is available,
2279 * at least on UniPlus, is temacs will have to be made unshared so
2280 * that text and data are contiguous. Then once loadup is complete,
2281 * unexec will produce a shared executable where the data can be
2282 * at the normal shared text boundary and the startofdata variable
2283 * will be patched by unexec to the correct value.
2287 #ifndef start_of_data
2292 return ((char *) DATA_START
);
2294 #ifdef ORDINARY_LINK
2296 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2297 * data_start isn't defined. We take the address of environ, which
2298 * is known to live at or near the start of the system crt0.c, and
2299 * we don't sweat the handful of bytes that might lose.
2301 extern char **environ
;
2303 return ((char *) &environ
);
2305 extern int data_start
;
2306 return ((char *) &data_start
);
2307 #endif /* ORDINARY_LINK */
2308 #endif /* DATA_START */
2310 #endif /* start_of_data */
2311 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2313 /* init_system_name sets up the string for the Lisp function
2314 system-name to return. */
2320 extern Lisp_Object Vsystem_name
;
2325 #include <sys/socket.h>
2327 #endif /* HAVE_SOCKETS */
2328 #endif /* not VMS */
2329 #endif /* not BSD4_1 */
2332 #ifndef HAVE_H_ERRNO
2335 #endif /* TRY_AGAIN */
2341 Vsystem_name
= build_string (sysname
);
2345 if ((sp
= egetenv ("SYS$NODE")) == 0)
2346 Vsystem_name
= build_string ("vax-vms");
2347 else if ((end
= index (sp
, ':')) == 0)
2348 Vsystem_name
= build_string (sp
);
2350 Vsystem_name
= make_string (sp
, end
- sp
);
2352 #ifndef HAVE_GETHOSTNAME
2355 Vsystem_name
= build_string (uts
.nodename
);
2356 #else /* HAVE_GETHOSTNAME */
2357 unsigned int hostname_size
= 256;
2358 char *hostname
= (char *) alloca (hostname_size
);
2360 /* Try to get the host name; if the buffer is too short, try
2361 again. Apparently, the only indication gethostname gives of
2362 whether the buffer was large enough is the presence or absence
2363 of a '\0' in the string. Eech. */
2366 gethostname (hostname
, hostname_size
- 1);
2367 hostname
[hostname_size
- 1] = '\0';
2369 /* Was the buffer large enough for the '\0'? */
2370 if (strlen (hostname
) < hostname_size
- 1)
2373 hostname_size
<<= 1;
2374 hostname
= (char *) alloca (hostname_size
);
2377 /* Turn the hostname into the official, fully-qualified hostname.
2378 Don't do this if we're going to dump; this can confuse system
2379 libraries on some machines and make the dumped emacs core dump. */
2382 #endif /* not CANNOT_DUMP */
2383 if (! index (hostname
, '.'))
2386 #ifdef HAVE_GETADDRINFO
2387 struct addrinfo
*res
;
2388 struct addrinfo hints
;
2391 memset (&hints
, 0, sizeof(hints
));
2392 hints
.ai_socktype
= SOCK_STREAM
;
2393 hints
.ai_flags
= AI_CANONNAME
;
2395 for (count
= 0;; count
++)
2397 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
2398 || ret
!= EAI_AGAIN
)
2403 Fsleep_for (make_number (1), Qnil
);
2408 struct addrinfo
*it
= res
;
2411 char *fqdn
= it
->ai_canonname
;
2412 if (fqdn
&& index (fqdn
, '.')
2413 && strcmp (fqdn
, "localhost.localdomain") != 0)
2419 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
2420 strcpy (hostname
, it
->ai_canonname
);
2424 #else /* !HAVE_GETADDRINFO */
2426 for (count
= 0;; count
++)
2432 hp
= gethostbyname (hostname
);
2434 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2441 Fsleep_for (make_number (1), Qnil
);
2446 char *fqdn
= (char *) hp
->h_name
;
2451 if (!index (fqdn
, '.'))
2453 /* We still don't have a fully qualified domain name.
2454 Try to find one in the list of alternate names */
2455 char **alias
= hp
->h_aliases
;
2457 && (!index (*alias
, '.')
2458 || !strcmp (*alias
, "localhost.localdomain")))
2465 /* Convert the host name to lower case. */
2466 /* Using ctype.h here would introduce a possible locale
2467 dependence that is probably wrong for hostnames. */
2471 if (*p
>= 'A' && *p
<= 'Z')
2477 #endif /* !HAVE_GETADDRINFO */
2479 #endif /* HAVE_SOCKETS */
2480 /* We used to try using getdomainname here,
2481 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2482 getdomainname gets the NIS/YP domain which often is not the same
2483 as in Internet domain name. */
2484 #if 0 /* Turned off because sysinfo is not really likely to return the
2485 correct Internet domain. */
2486 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2487 if (! index (hostname
, '.'))
2489 /* The hostname is not fully qualified. Append the domain name. */
2491 int hostlen
= strlen (hostname
);
2492 int domain_size
= 256;
2496 char *domain
= (char *) alloca (domain_size
+ 1);
2497 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2498 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2499 if (sys_domain_size
<= 0)
2501 if (domain_size
< sys_domain_size
)
2503 domain_size
= sys_domain_size
;
2506 strcpy (fqdn
, hostname
);
2507 if (domain
[0] == '.')
2508 strcpy (fqdn
+ hostlen
, domain
);
2509 else if (domain
[0] != 0)
2511 fqdn
[hostlen
] = '.';
2512 strcpy (fqdn
+ hostlen
+ 1, domain
);
2518 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2520 Vsystem_name
= build_string (hostname
);
2521 #endif /* HAVE_GETHOSTNAME */
2526 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2527 if (*p
== ' ' || *p
== '\t')
2534 #if !defined (HAVE_SELECT)
2536 #include "sysselect.h"
2539 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2540 /* Cause explanatory error message at compile time,
2541 since the select emulation is not good enough for X. */
2542 int *x
= &x_windows_lose_if_no_select_system_call
;
2545 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2546 * Only checks read descriptors.
2548 /* How long to wait between checking fds in select */
2549 #define SELECT_PAUSE 1
2552 /* For longjmp'ing back to read_input_waiting. */
2554 jmp_buf read_alarm_throw
;
2556 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2557 The read_socket_hook function sets this to 1 while it is waiting. */
2559 int read_alarm_should_throw
;
2567 #else /* not BSD4_1 */
2568 signal (SIGALRM
, SIG_IGN
);
2569 #endif /* not BSD4_1 */
2570 SIGNAL_THREAD_CHECK (SIGALRM
);
2571 if (read_alarm_should_throw
)
2572 longjmp (read_alarm_throw
, 1);
2576 /* Only rfds are checked. */
2578 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2580 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2581 EMACS_TIME
*timeout
;
2583 /* XXX This needs to be updated for multi-tty support. Is there
2584 anybody who needs to emulate select these days? */
2589 extern int proc_buffered_char
[];
2590 #ifndef subprocesses
2591 int process_tick
= 0, update_tick
= 0;
2593 extern int process_tick
, update_tick
;
2597 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2598 /* If we're using X, then the native select will work; we only need the
2599 emulation for non-X usage. */
2600 if (!NILP (Vinitial_window_system
))
2601 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2603 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2604 local_timeout
= &timeoutval
;
2616 /* If we are looking only for the terminal, with no timeout,
2617 just read it and wait -- that's more efficient. */
2618 if (*local_timeout
== 100000 && process_tick
== update_tick
2619 && FD_ISSET (0, &orfds
))
2622 for (fd
= 1; fd
< nfds
; ++fd
)
2623 if (FD_ISSET (fd
, &orfds
))
2625 if (! detect_input_pending ())
2626 read_input_waiting ();
2632 /* Once a second, till the timer expires, check all the flagged read
2633 * descriptors to see if any input is available. If there is some then
2634 * set the corresponding bit in the return copy of rfds.
2638 register int to_check
, fd
;
2642 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2644 if (FD_ISSET (fd
, &orfds
))
2646 int avail
= 0, status
= 0;
2649 avail
= detect_input_pending (); /* Special keyboard handler */
2653 status
= ioctl (fd
, FIONREAD
, &avail
);
2654 #else /* no FIONREAD */
2655 /* Hoping it will return -1 if nothing available
2656 or 0 if all 0 chars requested are read. */
2657 if (proc_buffered_char
[fd
] >= 0)
2661 avail
= read (fd
, &buf
, 1);
2663 proc_buffered_char
[fd
] = buf
;
2665 #endif /* no FIONREAD */
2667 if (status
>= 0 && avail
> 0)
2675 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2678 turn_on_atimers (0);
2679 signal (SIGALRM
, select_alarm
);
2681 alarm (SELECT_PAUSE
);
2683 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2684 while (select_alarmed
== 0 && *local_timeout
!= 0
2685 && process_tick
== update_tick
)
2687 /* If we are interested in terminal input,
2688 wait by reading the terminal.
2689 That makes instant wakeup for terminal input at least. */
2690 if (FD_ISSET (0, &orfds
))
2692 read_input_waiting ();
2693 if (detect_input_pending ())
2699 (*local_timeout
) -= SELECT_PAUSE
;
2701 /* Reset the old alarm if there was one. */
2702 turn_on_atimers (1);
2704 if (*local_timeout
== 0) /* Stop on timer being cleared */
2709 #endif /* not WINDOWSNT */
2711 /* Read keyboard input into the standard buffer,
2712 waiting for at least one character. */
2715 read_input_waiting ()
2717 /* XXX This needs to be updated for multi-tty support. Is there
2718 anybody who needs to emulate select these days? */
2720 extern int quit_char
;
2722 if (read_socket_hook
)
2724 struct input_event hold_quit
;
2726 EVENT_INIT (hold_quit
);
2727 hold_quit
.kind
= NO_EVENT
;
2729 read_alarm_should_throw
= 0;
2730 if (! setjmp (read_alarm_throw
))
2731 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2735 if (hold_quit
.kind
!= NO_EVENT
)
2736 kbd_buffer_store_event (&hold_quit
);
2740 struct input_event e
;
2742 nread
= read (fileno (stdin
), buf
, 1);
2745 /* Scan the chars for C-g and store them in kbd_buffer. */
2746 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2747 e
.frame_or_window
= selected_frame
;
2749 for (i
= 0; i
< nread
; i
++)
2751 /* Convert chars > 0177 to meta events if desired.
2752 We do this under the same conditions that read_avail_input does. */
2753 if (read_socket_hook
== 0)
2755 /* If the user says she has a meta key, then believe her. */
2756 if (meta_key
== 1 && (buf
[i
] & 0x80))
2757 e
.modifiers
= meta_modifier
;
2762 XSETINT (e
.code
, buf
[i
]);
2763 kbd_buffer_store_event (&e
);
2764 /* Don't look at input that follows a C-g too closely.
2765 This reduces lossage due to autorepeat on C-g. */
2766 if (buf
[i
] == quit_char
)
2772 #if !defined (HAVE_SELECT)
2773 #define select sys_select
2776 #endif /* not HAVE_SELECT */
2777 #endif /* not VMS */
2778 #endif /* not MSDOS */
2787 lmode
= LINTRUP
| lmode
;
2788 ioctl (fd
, TIOCLSET
, &lmode
);
2797 lmode
= ~LINTRUP
& lmode
;
2798 ioctl (fd
, TIOCLSET
, &lmode
);
2808 interrupts_deferred
= 0;
2818 interrupts_deferred
= 1;
2821 /* still inside #ifdef BSD4_1 */
2824 int sigheld
; /* Mask of held signals */
2830 sigheld
|= sigbit (signum
);
2838 sigheld
|= sigbit (signum
);
2845 sigheld
&= ~sigbit (signum
);
2850 sigfree () /* Free all held signals */
2853 for (i
= 0; i
< NSIG
; i
++)
2854 if (sigheld
& sigbit (i
))
2862 return 1 << (i
- 1);
2864 #endif /* subprocesses */
2867 /* POSIX signals support - DJB */
2868 /* Anyone with POSIX signals should have ANSI C declarations */
2870 #ifdef POSIX_SIGNALS
2872 sigset_t empty_mask
, full_mask
;
2875 sys_signal (int signal_number
, signal_handler_t action
)
2877 struct sigaction new_action
, old_action
;
2878 sigemptyset (&new_action
.sa_mask
);
2879 new_action
.sa_handler
= action
;
2880 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT)
2881 /* Emacs mostly works better with restartable system services. If this
2882 flag exists, we probably want to turn it on here.
2883 However, on some systems this resets the timeout of `select'
2884 which means that `select' never finishes if it keeps getting signals.
2885 BROKEN_SA_RESTART is defined on those systems. */
2886 /* It's not clear why the comment above says "mostly works better". --Stef
2887 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
2888 for pending input so we need long-running syscalls to be interrupted
2889 after a signal that sets the interrupt_input_pending flag. */
2890 new_action
.sa_flags
= SA_RESTART
;
2892 new_action
.sa_flags
= 0;
2894 sigaction (signal_number
, &new_action
, &old_action
);
2895 return (old_action
.sa_handler
);
2899 /* If we're compiling with GCC, we don't need this function, since it
2900 can be written as a macro. */
2902 sys_sigmask (int sig
)
2905 sigemptyset (&mask
);
2906 sigaddset (&mask
, sig
);
2911 /* I'd like to have these guys return pointers to the mask storage in here,
2912 but there'd be trouble if the code was saving multiple masks. I'll be
2913 safe and pass the structure. It normally won't be more than 2 bytes
2917 sys_sigblock (sigset_t new_mask
)
2920 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2925 sys_sigunblock (sigset_t new_mask
)
2928 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2933 sys_sigsetmask (sigset_t new_mask
)
2936 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2940 #endif /* POSIX_SIGNALS */
2942 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2943 static char *my_sys_siglist
[NSIG
];
2947 # define sys_siglist my_sys_siglist
2953 #ifdef POSIX_SIGNALS
2954 sigemptyset (&empty_mask
);
2955 sigfillset (&full_mask
);
2958 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2962 sys_siglist
[SIGABRT
] = "Aborted";
2965 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2968 sys_siglist
[SIGALRM
] = "Alarm clock";
2971 sys_siglist
[SIGBUS
] = "Bus error";
2974 sys_siglist
[SIGCLD
] = "Child status changed";
2977 sys_siglist
[SIGCHLD
] = "Child status changed";
2980 sys_siglist
[SIGCONT
] = "Continued";
2983 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2986 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2989 sys_siglist
[SIGEMT
] = "Emulation trap";
2992 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2995 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2998 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
3001 sys_siglist
[SIGHUP
] = "Hangup";
3004 sys_siglist
[SIGILL
] = "Illegal instruction";
3007 sys_siglist
[SIGINT
] = "Interrupt";
3010 sys_siglist
[SIGIO
] = "I/O possible";
3013 sys_siglist
[SIGIOINT
] = "I/O intervention required";
3016 sys_siglist
[SIGIOT
] = "IOT trap";
3019 sys_siglist
[SIGKILL
] = "Killed";
3022 sys_siglist
[SIGLOST
] = "Resource lost";
3025 sys_siglist
[SIGLWP
] = "SIGLWP";
3028 sys_siglist
[SIGMSG
] = "Monitor mode data available";
3031 sys_siglist
[SIGWIND
] = "SIGPHONE";
3034 sys_siglist
[SIGPIPE
] = "Broken pipe";
3037 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
3040 sys_siglist
[SIGPROF
] = "Profiling timer expired";
3043 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
3046 sys_siglist
[SIGPWR
] = "Power-fail restart";
3049 sys_siglist
[SIGQUIT
] = "Quit";
3052 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
3055 sys_siglist
[SIGSAK
] = "Secure attention";
3058 sys_siglist
[SIGSEGV
] = "Segmentation violation";
3061 sys_siglist
[SIGSOUND
] = "Sound completed";
3064 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
3067 sys_siglist
[SIGSTP
] = "Stopped (user)";
3070 sys_siglist
[SIGSYS
] = "Bad argument to system call";
3073 sys_siglist
[SIGTERM
] = "Terminated";
3076 sys_siglist
[SIGTHAW
] = "SIGTHAW";
3079 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
3082 sys_siglist
[SIGTSTP
] = "Stopped (user)";
3085 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
3088 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
3091 sys_siglist
[SIGURG
] = "Urgent I/O condition";
3094 sys_siglist
[SIGUSR1
] = "User defined signal 1";
3097 sys_siglist
[SIGUSR2
] = "User defined signal 2";
3100 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
3103 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
3106 sys_siglist
[SIGWINCH
] = "Window size changed";
3109 sys_siglist
[SIGWIND
] = "SIGWIND";
3112 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3115 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3118 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
3127 /* Figure out how many bits the system's random number generator uses.
3128 `random' and `lrand48' are assumed to return 31 usable bits.
3129 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3130 so we'll shift it and treat it like the 15-bit USG `rand'. */
3134 # define RAND_BITS 31
3135 # else /* !HAVE_RANDOM */
3136 # ifdef HAVE_LRAND48
3137 # define RAND_BITS 31
3138 # define random lrand48
3139 # else /* !HAVE_LRAND48 */
3140 # define RAND_BITS 15
3141 # if RAND_MAX == 32767
3142 # define random rand
3143 # else /* RAND_MAX != 32767 */
3144 # if RAND_MAX == 2147483647
3145 # define random() (rand () >> 16)
3146 # else /* RAND_MAX != 2147483647 */
3148 # define random rand
3150 # define random() (rand () >> 16)
3152 # endif /* RAND_MAX != 2147483647 */
3153 # endif /* RAND_MAX != 32767 */
3154 # endif /* !HAVE_LRAND48 */
3155 # endif /* !HAVE_RANDOM */
3156 #endif /* !RAND_BITS */
3163 srandom ((unsigned int)arg
);
3165 # ifdef HAVE_LRAND48
3168 srand ((unsigned int)arg
);
3174 * Build a full Emacs-sized word out of whatever we've got.
3175 * This suffices even for a 64-bit architecture with a 15-bit rand.
3180 long val
= random ();
3181 #if VALBITS > RAND_BITS
3182 val
= (val
<< RAND_BITS
) ^ random ();
3183 #if VALBITS > 2*RAND_BITS
3184 val
= (val
<< RAND_BITS
) ^ random ();
3185 #if VALBITS > 3*RAND_BITS
3186 val
= (val
<< RAND_BITS
) ^ random ();
3187 #if VALBITS > 4*RAND_BITS
3188 val
= (val
<< RAND_BITS
) ^ random ();
3189 #endif /* need at least 5 */
3190 #endif /* need at least 4 */
3191 #endif /* need at least 3 */
3192 #endif /* need at least 2 */
3193 return val
& ((1L << VALBITS
) - 1);
3199 /* If any place else asks for the TERM variable,
3200 allow it to be overridden with the EMACS_TERM variable
3201 before attempting to translate the logical name TERM. As a last
3202 resort, ask for VAX C's special idea of the TERM variable. */
3209 static char buf
[256];
3210 static struct dsc$descriptor_s equiv
3211 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3212 static struct dsc$descriptor_s d_name
3213 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3216 if (!strcmp (name
, "TERM"))
3218 val
= (char *) getenv ("EMACS_TERM");
3223 d_name
.dsc$w_length
= strlen (name
);
3224 d_name
.dsc$a_pointer
= name
;
3225 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3227 char *str
= (char *) xmalloc (eqlen
+ 1);
3228 bcopy (buf
, str
, eqlen
);
3230 /* This is a storage leak, but a pain to fix. With luck,
3231 no one will ever notice. */
3234 return (char *) getenv (name
);
3239 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3240 to force a call on the debugger from within the image. */
3244 reset_all_sys_modes ();
3245 LIB$
SIGNAL (SS$_DEBUG
);
3251 #ifdef LINK_CRTL_SHARE
3252 #ifdef SHARABLE_LIB_BUG
3253 /* Variables declared noshare and initialized in sharable libraries
3254 cannot be shared. The VMS linker incorrectly forces you to use a private
3255 version which is uninitialized... If not for this "feature", we
3256 could use the C library definition of sys_nerr and sys_errlist. */
3258 char *sys_errlist
[] =
3262 "no such file or directory",
3264 "interrupted system call",
3266 "no such device or address",
3267 "argument list too long",
3268 "exec format error",
3271 "no more processes",
3272 "not enough memory",
3273 "permission denied",
3275 "block device required",
3276 "mount devices busy",
3278 "cross-device link",
3283 "file table overflow",
3284 "too many open files",
3288 "no space left on device",
3290 "read-only file system",
3296 "vax/vms specific error code nontranslatable error"
3298 #endif /* SHARABLE_LIB_BUG */
3299 #endif /* LINK_CRTL_SHARE */
3302 #ifndef HAVE_STRERROR
3308 extern char *sys_errlist
[];
3309 extern int sys_nerr
;
3311 if (errnum
>= 0 && errnum
< sys_nerr
)
3312 return sys_errlist
[errnum
];
3313 return (char *) "Unknown error";
3315 #endif /* not WINDOWSNT */
3316 #endif /* ! HAVE_STRERROR */
3319 emacs_open (path
, oflag
, mode
)
3323 register int rtnval
;
3326 if (oflag
& O_CREAT
)
3327 return creat (path
, mode
);
3330 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3331 && (errno
== EINTR
))
3341 register int rtnval
;
3343 #if defined (MAC_OSX) && defined (HAVE_CARBON)
3345 extern int mac_try_close_socket
P_ ((int));
3347 if (mac_try_close_socket (fd
))
3352 while ((rtnval
= close (fd
)) == -1
3353 && (errno
== EINTR
))
3356 /* If close is interrupted SunOS 4.1 may or may not have closed the
3357 file descriptor. If it did the second close will fail with
3358 errno = EBADF. That means we have succeeded. */
3359 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3366 emacs_read (fildes
, buf
, nbyte
)
3371 register int rtnval
;
3373 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3374 && (errno
== EINTR
))
3380 emacs_write (fildes
, buf
, nbyte
)
3385 register int rtnval
, bytes_written
;
3391 rtnval
= write (fildes
, buf
, nbyte
);
3398 /* I originally used `QUIT' but that might causes files to
3399 be truncated if you hit C-g in the middle of it. --Stef */
3400 if (interrupt_input_pending
)
3401 handle_async_input ();
3402 if (pending_atimers
)
3403 do_pending_atimers ();
3408 return (bytes_written
? bytes_written
: -1);
3413 bytes_written
+= rtnval
;
3415 return (bytes_written
);
3420 * All of the following are for USG.
3422 * On USG systems the system calls are INTERRUPTIBLE by signals
3423 * that the user program has elected to catch. Thus the system call
3424 * must be retried in these cases. To handle this without massive
3425 * changes in the source code, we remap the standard system call names
3426 * to names for our own functions in sysdep.c that do the system call
3427 * with retries. Actually, for portability reasons, it is good
3428 * programming practice, as this example shows, to limit all actual
3429 * system calls to a single occurrence in the source. Sure, this
3430 * adds an extra level of function call overhead but it is almost
3431 * always negligible. Fred Fish, Unisoft Systems Inc.
3435 * Warning, this function may not duplicate 4.2 action properly
3436 * under error conditions.
3440 /* In 4.1, param.h fails to define this. */
3441 #define MAXPATHLEN 1024
3450 char *npath
, *spath
;
3451 extern char *getcwd ();
3453 BLOCK_INPUT
; /* getcwd uses malloc */
3454 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3460 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3461 up to first slash. Should be harmless on other systems. */
3462 while (*npath
&& *npath
!= '/')
3464 strcpy (pathname
, npath
);
3465 free (spath
); /* getcwd uses malloc */
3470 #endif /* HAVE_GETWD */
3473 * Emulate rename using unlink/link. Note that this is
3474 * only partially correct. Also, doesn't enforce restriction
3475 * that files be of same type (regular->regular, dir->dir, etc).
3484 if (access (from
, 0) == 0)
3487 if (link (from
, to
) == 0)
3488 if (unlink (from
) == 0)
3500 /* HPUX curses library references perror, but as far as we know
3501 it won't be called. Anyway this definition will do for now. */
3507 #endif /* not HAVE_PERROR */
3513 * Emulate BSD dup2. First close newd if it already exists.
3514 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3515 * until we are, then close the unsuccessful ones.
3522 register int fd
, ret
;
3527 return fcntl (oldd
, F_DUPFD
, newd
);
3534 ret
= dup2 (old
,new);
3540 #endif /* not HAVE_DUP2 */
3543 * Gettimeofday. Simulate as much as possible. Only accurate
3544 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3545 * Only needed when subprocesses are defined.
3550 #ifndef HAVE_GETTIMEOFDAY
3555 gettimeofday (tp
, tzp
)
3557 struct timezone
*tzp
;
3559 extern long time ();
3561 tp
->tv_sec
= time ((long *)0);
3564 tzp
->tz_minuteswest
= -1;
3571 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3574 * This function will go away as soon as all the stubs fixed. (fnf)
3581 printf ("%s not yet implemented\r\n", badfunc
);
3582 reset_all_sys_modes ();
3588 /* Directory routines for systems that don't have them. */
3590 #ifdef SYSV_SYSTEM_DIR
3594 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3598 register DIR *dirp
; /* stream from opendir */
3602 rtnval
= emacs_close (dirp
->dd_fd
);
3604 /* Some systems (like Solaris) allocate the buffer and the DIR all
3605 in one block. Why in the world are we freeing this ourselves
3607 #if ! (defined (sun) && defined (USG5_4))
3608 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3610 xfree ((char *) dirp
);
3614 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3615 #endif /* SYSV_SYSTEM_DIR */
3617 #ifdef NONSYSTEM_DIR_LIBRARY
3621 char *filename
; /* name of directory */
3623 register DIR *dirp
; /* -> malloc'ed storage */
3624 register int fd
; /* file descriptor for read */
3625 struct stat sbuf
; /* result of fstat */
3627 fd
= emacs_open (filename
, O_RDONLY
, 0);
3632 if (fstat (fd
, &sbuf
) < 0
3633 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3634 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3638 return 0; /* bad luck today */
3643 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3650 register DIR *dirp
; /* stream from opendir */
3652 emacs_close (dirp
->dd_fd
);
3653 xfree ((char *) dirp
);
3661 ino_t od_ino
; /* inode */
3662 char od_name
[DIRSIZ
]; /* filename */
3664 #endif /* not VMS */
3666 struct direct dir_static
; /* simulated directory contents */
3671 register DIR *dirp
; /* stream from opendir */
3674 register struct olddir
*dp
; /* -> directory data */
3676 register struct dir$_name
*dp
; /* -> directory data */
3677 register struct dir$_version
*dv
; /* -> version data */
3682 if (dirp
->dd_loc
>= dirp
->dd_size
)
3683 dirp
->dd_loc
= dirp
->dd_size
= 0;
3685 if (dirp
->dd_size
== 0 /* refill buffer */
3686 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3690 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3691 dirp
->dd_loc
+= sizeof (struct olddir
);
3693 if (dp
->od_ino
!= 0) /* not deleted entry */
3695 dir_static
.d_ino
= dp
->od_ino
;
3696 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3697 dir_static
.d_name
[DIRSIZ
] = '\0';
3698 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3699 dir_static
.d_reclen
= sizeof (struct direct
)
3701 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3702 return &dir_static
; /* -> simulated structure */
3705 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3706 if (dirp
->dd_loc
== 0)
3707 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3708 : dp
->dir$b_namecount
;
3709 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3710 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3711 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3712 dir_static
.d_reclen
= sizeof (struct direct
)
3714 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3715 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3716 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3717 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3724 /* readdirver is just like readdir except it returns all versions of a file
3725 as separate entries. */
3730 register DIR *dirp
; /* stream from opendir */
3732 register struct dir$_name
*dp
; /* -> directory data */
3733 register struct dir$_version
*dv
; /* -> version data */
3735 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3736 dirp
->dd_loc
= dirp
->dd_size
= 0;
3738 if (dirp
->dd_size
== 0 /* refill buffer */
3739 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3742 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3743 if (dirp
->dd_loc
== 0)
3744 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3745 : dp
->dir$b_namecount
;
3746 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3747 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3748 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3749 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3750 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3751 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3752 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3753 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3759 #endif /* NONSYSTEM_DIR_LIBRARY */
3763 set_file_times (filename
, atime
, mtime
)
3764 const char *filename
;
3765 EMACS_TIME atime
, mtime
;
3768 struct timeval tv
[2];
3771 return utimes (filename
, tv
);
3772 #else /* not HAVE_UTIMES */
3774 utb
.actime
= EMACS_SECS (atime
);
3775 utb
.modtime
= EMACS_SECS (mtime
);
3776 return utime (filename
, &utb
);
3777 #endif /* not HAVE_UTIMES */
3780 /* mkdir and rmdir functions, for systems which don't have them. */
3784 * Written by Robert Rother, Mariah Corporation, August 1985.
3786 * If you want it, it's yours. All I ask in return is that if you
3787 * figure out how to do this in a Bourne Shell script you send me
3789 * sdcsvax!rmr or rmr@uscd
3791 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3792 * subroutine. 11Mar86; hoptoad!gnu
3794 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3795 * subroutine didn't return EEXIST. It does now.
3801 #ifdef MKDIR_PROTOTYPE
3805 mkdir (dpath
, dmode
)
3810 int cpid
, status
, fd
;
3811 struct stat statbuf
;
3813 if (stat (dpath
, &statbuf
) == 0)
3815 errno
= EEXIST
; /* Stat worked, so it already exists */
3819 /* If stat fails for a reason other than non-existence, return error */
3820 if (errno
!= ENOENT
)
3823 synch_process_alive
= 1;
3824 switch (cpid
= fork ())
3827 case -1: /* Error in fork */
3828 return (-1); /* Errno is set already */
3830 case 0: /* Child process */
3832 * Cheap hack to set mode of new directory. Since this
3833 * child process is going away anyway, we zap its umask.
3834 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3835 * directory. Does anybody care?
3837 status
= umask (0); /* Get current umask */
3838 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3839 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3846 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3847 _exit (-1); /* Can't exec /bin/mkdir */
3849 default: /* Parent process */
3850 wait_for_termination (cpid
);
3853 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3854 || synch_process_termsig
!= 0)
3856 errno
= EIO
; /* We don't know why, but */
3857 return -1; /* /bin/mkdir failed */
3862 #endif /* not HAVE_MKDIR */
3869 int cpid
, status
, fd
;
3870 struct stat statbuf
;
3872 if (stat (dpath
, &statbuf
) != 0)
3874 /* Stat just set errno. We don't have to */
3878 synch_process_alive
= 1;
3879 switch (cpid
= fork ())
3882 case -1: /* Error in fork */
3883 return (-1); /* Errno is set already */
3885 case 0: /* Child process */
3886 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3893 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3894 _exit (-1); /* Can't exec /bin/rmdir */
3896 default: /* Parent process */
3897 wait_for_termination (cpid
);
3900 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3901 || synch_process_termsig
!= 0)
3903 errno
= EIO
; /* We don't know why, but */
3904 return -1; /* /bin/rmdir failed */
3909 #endif /* !HAVE_RMDIR */
3913 /* Functions for VMS */
3919 /* Return as a string the VMS error string pertaining to STATUS.
3920 Reuses the same static buffer each time it is called. */
3924 int status
; /* VMS status code */
3928 static char buf
[257];
3930 bufadr
[0] = sizeof buf
- 1;
3931 bufadr
[1] = (int) buf
;
3932 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3933 return "untranslatable VMS error status";
3941 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3942 * not work correctly. (It also doesn't work well in version 2.3.)
3947 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3948 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3952 unsigned short s_buflen
;
3953 unsigned short s_code
;
3955 unsigned short *s_retlenadr
;
3959 #define buflen s.s_buflen
3960 #define code s.s_code
3961 #define bufadr s.s_bufadr
3962 #define retlenadr s.s_retlenadr
3964 #define R_OK 4 /* test for read permission */
3965 #define W_OK 2 /* test for write permission */
3966 #define X_OK 1 /* test for execute (search) permission */
3967 #define F_OK 0 /* test for presence of file */
3970 sys_access (path
, mode
)
3974 static char *user
= NULL
;
3977 /* translate possible directory spec into .DIR file name, so brain-dead
3978 * access can treat the directory like a file. */
3979 if (directory_file_name (path
, dir_fn
))
3983 return access (path
, mode
);
3984 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3990 unsigned short int dummy
;
3992 static int constant
= ACL$C_FILE
;
3993 DESCRIPTOR (path_desc
, path
);
3994 DESCRIPTOR (user_desc
, user
);
3998 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
4001 acces
|= CHP$M_READ
;
4003 acces
|= CHP$M_WRITE
;
4004 itemlst
[0].buflen
= sizeof (int);
4005 itemlst
[0].code
= CHP$_FLAGS
;
4006 itemlst
[0].bufadr
= (char *) &flags
;
4007 itemlst
[0].retlenadr
= &dummy
;
4008 itemlst
[1].buflen
= sizeof (int);
4009 itemlst
[1].code
= CHP$_ACCESS
;
4010 itemlst
[1].bufadr
= (char *) &acces
;
4011 itemlst
[1].retlenadr
= &dummy
;
4012 itemlst
[2].end
= CHP$_END
;
4013 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
4014 return stat
== SS$_NORMAL
? 0 : -1;
4018 #else /* not VMS4_4 */
4021 #define ACE$M_WRITE 2
4022 #define ACE$C_KEYID 1
4024 static unsigned short memid
, grpid
;
4025 static unsigned int uic
;
4027 /* Called from init_sys_modes, so it happens not very often
4028 but at least each time Emacs is loaded. */
4030 sys_access_reinit ()
4036 sys_access (filename
, type
)
4042 int status
, size
, i
, typecode
, acl_controlled
;
4043 unsigned int *aclptr
, *aclend
, aclbuf
[60];
4044 union prvdef prvmask
;
4046 /* Get UIC and GRP values for protection checking. */
4049 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
4052 memid
= uic
& 0xFFFF;
4056 if (type
!= 2) /* not checking write access */
4057 return access (filename
, type
);
4059 /* Check write protection. */
4061 #define CHECKPRIV(bit) (prvmask.bit)
4062 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
4064 /* Find privilege bits */
4065 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
4067 error ("Unable to find privileges: %s", vmserrstr (status
));
4068 if (CHECKPRIV (PRV$V_BYPASS
))
4069 return 0; /* BYPASS enabled */
4071 fab
.fab$b_fac
= FAB$M_GET
;
4072 fab
.fab$l_fna
= filename
;
4073 fab
.fab$b_fns
= strlen (filename
);
4074 fab
.fab$l_xab
= &xab
;
4075 xab
= cc$rms_xabpro
;
4076 xab
.xab$l_aclbuf
= aclbuf
;
4077 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
4078 status
= SYS$
OPEN (&fab
, 0, 0);
4081 SYS$
CLOSE (&fab
, 0, 0);
4082 /* Check system access */
4083 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
4085 /* Check ACL entries, if any */
4087 if (xab
.xab$w_acllen
> 0)
4090 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
4091 while (*aclptr
&& aclptr
< aclend
)
4093 size
= (*aclptr
& 0xff) / 4;
4094 typecode
= (*aclptr
>> 8) & 0xff;
4095 if (typecode
== ACE$C_KEYID
)
4096 for (i
= size
- 1; i
> 1; i
--)
4097 if (aclptr
[i
] == uic
)
4100 if (aclptr
[1] & ACE$M_WRITE
)
4101 return 0; /* Write access through ACL */
4103 aclptr
= &aclptr
[size
];
4105 if (acl_controlled
) /* ACL specified, prohibits write access */
4108 /* No ACL entries specified, check normal protection */
4109 if (WRITABLE (XAB$V_WLD
)) /* World writable */
4111 if (WRITABLE (XAB$V_GRP
) &&
4112 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
4113 return 0; /* Group writable */
4114 if (WRITABLE (XAB$V_OWN
) &&
4115 (xab
.xab$l_uic
& 0xFFFF) == memid
)
4116 return 0; /* Owner writable */
4118 return -1; /* Not writable */
4120 #endif /* not VMS4_4 */
4123 static char vtbuf
[NAM$C_MAXRSS
+1];
4125 /* translate a vms file spec to a unix path */
4127 sys_translate_vms (vfile
)
4138 /* leading device or logical name is a root directory */
4139 if (p
= strchr (vfile
, ':'))
4148 if (*p
== '[' || *p
== '<')
4150 while (*++vfile
!= *p
+ 2)
4154 if (vfile
[-1] == *p
)
4177 static char utbuf
[NAM$C_MAXRSS
+1];
4179 /* translate a unix path to a VMS file spec */
4181 sys_translate_unix (ufile
)
4204 if (index (&ufile
[1], '/'))
4211 if (index (&ufile
[1], '/'))
4218 if (strncmp (ufile
, "./", 2) == 0)
4225 ufile
++; /* skip the dot */
4226 if (index (&ufile
[1], '/'))
4231 else if (strncmp (ufile
, "../", 3) == 0)
4239 ufile
+= 2; /* skip the dots */
4240 if (index (&ufile
[1], '/'))
4265 extern char *getcwd ();
4267 #define MAXPATHLEN 1024
4269 ptr
= xmalloc (MAXPATHLEN
);
4270 val
= getcwd (ptr
, MAXPATHLEN
);
4276 strcpy (pathname
, ptr
);
4285 long item_code
= JPI$_OWNER
;
4286 unsigned long parent_id
;
4289 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4292 vaxc$errno
= status
;
4302 return (getgid () << 16) | getuid ();
4307 sys_read (fildes
, buf
, nbyte
)
4312 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4317 sys_write (fildes
, buf
, nbyte
)
4322 register int nwrote
, rtnval
= 0;
4324 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4330 return rtnval
? rtnval
: -1;
4331 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4332 return rtnval
? rtnval
: -1;
4333 return (rtnval
+ nwrote
);
4338 * VAX/VMS VAX C RTL really loses. It insists that records
4339 * end with a newline (carriage return) character, and if they
4340 * don't it adds one (nice of it isn't it!)
4342 * Thus we do this stupidity below.
4347 sys_write (fildes
, buf
, nbytes
)
4350 unsigned int nbytes
;
4357 fstat (fildes
, &st
);
4363 /* Handle fixed-length files with carriage control. */
4364 if (st
.st_fab_rfm
== FAB$C_FIX
4365 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4367 len
= st
.st_fab_mrs
;
4368 retval
= write (fildes
, p
, min (len
, nbytes
));
4371 retval
++; /* This skips the implied carriage control */
4375 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4376 while (*e
!= '\n' && e
> p
) e
--;
4377 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4378 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4380 retval
= write (fildes
, p
, len
);
4391 /* Create file NEW copying its attributes from file OLD. If
4392 OLD is 0 or does not exist, create based on the value of
4395 /* Protection value the file should ultimately have.
4396 Set by create_copy_attrs, and use by rename_sansversions. */
4397 static unsigned short int fab_final_pro
;
4400 creat_copy_attrs (old
, new)
4403 struct FAB fab
= cc$rms_fab
;
4404 struct XABPRO xabpro
;
4405 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4406 extern int vms_stmlf_recfm
;
4410 fab
.fab$b_fac
= FAB$M_GET
;
4411 fab
.fab$l_fna
= old
;
4412 fab
.fab$b_fns
= strlen (old
);
4413 fab
.fab$l_xab
= (char *) &xabpro
;
4414 xabpro
= cc$rms_xabpro
;
4415 xabpro
.xab$l_aclbuf
= aclbuf
;
4416 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4417 /* Call $OPEN to fill in the fab & xabpro fields. */
4418 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4420 SYS$
CLOSE (&fab
, 0, 0);
4421 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4422 if (xabpro
.xab$w_acllen
> 0)
4424 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4425 /* If the acl buffer was too short, redo open with longer one.
4426 Wouldn't need to do this if there were some system imposed
4427 limit on the size of an ACL, but I can't find any such. */
4429 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4430 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4431 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4432 SYS$
CLOSE (&fab
, 0, 0);
4438 xabpro
.xab$l_aclbuf
= 0;
4443 fab
.fab$l_fna
= new;
4444 fab
.fab$b_fns
= strlen (new);
4448 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4449 fab
.fab$b_rat
= FAB$M_CR
;
4452 /* Set the file protections such that we will be able to manipulate
4453 this file. Once we are done writing and renaming it, we will set
4454 the protections back. */
4456 fab_final_pro
= xabpro
.xab$w_pro
;
4458 SYS$
SETDFPROT (0, &fab_final_pro
);
4459 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4461 /* Create the new file with either default attrs or attrs copied
4463 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4465 SYS$
CLOSE (&fab
, 0, 0);
4466 /* As this is a "replacement" for creat, return a file descriptor
4467 opened for writing. */
4468 return open (new, O_WRONLY
);
4473 #include <varargs.h>
4476 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4481 sys_creat (va_alist
)
4484 va_list list_incrementer
;
4487 int rfd
; /* related file descriptor */
4488 int fd
; /* Our new file descriptor */
4495 extern int vms_stmlf_recfm
;
4498 va_start (list_incrementer
);
4499 name
= va_arg (list_incrementer
, char *);
4500 mode
= va_arg (list_incrementer
, int);
4502 rfd
= va_arg (list_incrementer
, int);
4503 va_end (list_incrementer
);
4506 /* Use information from the related file descriptor to set record
4507 format of the newly created file. */
4508 fstat (rfd
, &st_buf
);
4509 switch (st_buf
.st_fab_rfm
)
4512 strcpy (rfm
, "rfm = fix");
4513 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4514 strcpy (rat
, "rat = ");
4515 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4517 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4518 strcat (rat
, "ftn");
4519 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4520 strcat (rat
, "prn");
4521 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4522 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4523 strcat (rat
, ", blk");
4525 strcat (rat
, "blk");
4526 return creat (name
, 0, rfm
, rat
, mrs
);
4529 strcpy (rfm
, "rfm = vfc");
4530 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4531 strcpy (rat
, "rat = ");
4532 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4534 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4535 strcat (rat
, "ftn");
4536 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4537 strcat (rat
, "prn");
4538 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4539 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4540 strcat (rat
, ", blk");
4542 strcat (rat
, "blk");
4543 return creat (name
, 0, rfm
, rat
, fsz
);
4546 strcpy (rfm
, "rfm = stm");
4550 strcpy (rfm
, "rfm = stmcr");
4554 strcpy (rfm
, "rfm = stmlf");
4558 strcpy (rfm
, "rfm = udf");
4562 strcpy (rfm
, "rfm = var");
4565 strcpy (rat
, "rat = ");
4566 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4568 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4569 strcat (rat
, "ftn");
4570 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4571 strcat (rat
, "prn");
4572 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4573 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4574 strcat (rat
, ", blk");
4576 strcat (rat
, "blk");
4580 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4581 strcpy (rat
, "rat=cr");
4583 /* Until the VAX C RTL fixes the many bugs with modes, always use
4584 mode 0 to get the user's default protection. */
4585 fd
= creat (name
, 0, rfm
, rat
);
4586 if (fd
< 0 && errno
== EEXIST
)
4588 if (unlink (name
) < 0)
4589 report_file_error ("delete", build_string (name
));
4590 fd
= creat (name
, 0, rfm
, rat
);
4596 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4598 sys_fwrite (ptr
, size
, num
, fp
)
4599 register char * ptr
;
4602 register int tot
= num
* size
;
4610 * The VMS C library routine creat actually creates a new version of an
4611 * existing file rather than truncating the old version. There are times
4612 * when this is not the desired behavior, for instance, when writing an
4613 * auto save file (you only want one version), or when you don't have
4614 * write permission in the directory containing the file (but the file
4615 * itself is writable). Hence this routine, which is equivalent to
4616 * "close (creat (fn, 0));" on Unix if fn already exists.
4622 struct FAB xfab
= cc$rms_fab
;
4623 struct RAB xrab
= cc$rms_rab
;
4626 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4627 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4628 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4629 xfab
.fab$l_fna
= fn
;
4630 xfab
.fab$b_fns
= strlen (fn
);
4631 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4633 xrab
.rab$l_fab
= &xfab
;
4635 /* This gibberish opens the file, positions to the first record, and
4636 deletes all records from there until the end of file. */
4637 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4639 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4640 (SYS$
FIND (&xrab
) & 01) == 01 &&
4641 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4652 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4653 SYSPRV or a readable SYSUAF.DAT. */
4659 * Routine to read the VMS User Authorization File and return
4660 * a specific user's record.
4663 static struct UAF retuaf
;
4666 get_uaf_name (uname
)
4673 uaf_fab
= cc$rms_fab
;
4674 uaf_rab
= cc$rms_rab
;
4675 /* initialize fab fields */
4676 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4677 uaf_fab
.fab$b_fns
= 21;
4678 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4679 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4680 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4681 /* initialize rab fields */
4682 uaf_rab
.rab$l_fab
= &uaf_fab
;
4683 /* open the User Authorization File */
4684 status
= SYS$
OPEN (&uaf_fab
);
4688 vaxc$errno
= status
;
4691 status
= SYS$
CONNECT (&uaf_rab
);
4695 vaxc$errno
= status
;
4698 /* read the requested record - index is in uname */
4699 uaf_rab
.rab$l_kbf
= uname
;
4700 uaf_rab
.rab$b_ksz
= strlen (uname
);
4701 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4702 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4703 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4704 status
= SYS$
GET (&uaf_rab
);
4708 vaxc$errno
= status
;
4711 /* close the User Authorization File */
4712 status
= SYS$
DISCONNECT (&uaf_rab
);
4716 vaxc$errno
= status
;
4719 status
= SYS$
CLOSE (&uaf_fab
);
4723 vaxc$errno
= status
;
4737 uaf_fab
= cc$rms_fab
;
4738 uaf_rab
= cc$rms_rab
;
4739 /* initialize fab fields */
4740 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4741 uaf_fab
.fab$b_fns
= 21;
4742 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4743 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4744 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4745 /* initialize rab fields */
4746 uaf_rab
.rab$l_fab
= &uaf_fab
;
4747 /* open the User Authorization File */
4748 status
= SYS$
OPEN (&uaf_fab
);
4752 vaxc$errno
= status
;
4755 status
= SYS$
CONNECT (&uaf_rab
);
4759 vaxc$errno
= status
;
4762 /* read the requested record - index is in uic */
4763 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4764 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4765 uaf_rab
.rab$b_ksz
= sizeof uic
;
4766 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4767 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4768 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4769 status
= SYS$
GET (&uaf_rab
);
4773 vaxc$errno
= status
;
4776 /* close the User Authorization File */
4777 status
= SYS$
DISCONNECT (&uaf_rab
);
4781 vaxc$errno
= status
;
4784 status
= SYS$
CLOSE (&uaf_fab
);
4788 vaxc$errno
= status
;
4794 static struct passwd retpw
;
4802 /* copy these out first because if the username is 32 chars, the next
4803 section will overwrite the first byte of the UIC */
4804 retpw
.pw_uid
= up
->uaf$w_mem
;
4805 retpw
.pw_gid
= up
->uaf$w_grp
;
4807 /* I suppose this is not the best style, to possibly overwrite one
4808 byte beyond the end of the field, but what the heck... */
4809 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4810 while (ptr
[-1] == ' ')
4813 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4815 /* the rest of these are counted ascii strings */
4816 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4817 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4818 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4819 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4820 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4821 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4822 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4823 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4827 #else /* not READ_SYSUAF */
4828 static struct passwd retpw
;
4829 #endif /* not READ_SYSUAF */
4840 unsigned char * full
;
4841 #endif /* READ_SYSUAF */
4846 if ('a' <= *ptr
&& *ptr
<= 'z')
4851 if (!(up
= get_uaf_name (name
)))
4853 return cnv_uaf_pw (up
);
4855 if (strcmp (name
, getenv ("USER")) == 0)
4857 retpw
.pw_uid
= getuid ();
4858 retpw
.pw_gid
= getgid ();
4859 strcpy (retpw
.pw_name
, name
);
4860 if (full
= egetenv ("FULLNAME"))
4861 strcpy (retpw
.pw_gecos
, full
);
4863 *retpw
.pw_gecos
= '\0';
4864 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4865 *retpw
.pw_shell
= '\0';
4870 #endif /* not READ_SYSUAF */
4880 if (!(up
= get_uaf_uic (uid
)))
4882 return cnv_uaf_pw (up
);
4884 if (uid
== sys_getuid ())
4885 return getpwnam (egetenv ("USER"));
4888 #endif /* not READ_SYSUAF */
4891 /* return total address space available to the current process. This is
4892 the sum of the current p0 size, p1 size and free page table entries
4898 unsigned long free_pages
;
4899 unsigned long frep0va
;
4900 unsigned long frep1va
;
4903 item_code
= JPI$_FREPTECNT
;
4904 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4907 vaxc$errno
= status
;
4912 item_code
= JPI$_FREP0VA
;
4913 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4916 vaxc$errno
= status
;
4919 item_code
= JPI$_FREP1VA
;
4920 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4923 vaxc$errno
= status
;
4927 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4931 define_logical_name (varname
, string
)
4935 struct dsc$descriptor_s strdsc
=
4936 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4937 struct dsc$descriptor_s envdsc
=
4938 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4939 struct dsc$descriptor_s lnmdsc
=
4940 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4942 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4946 delete_logical_name (varname
)
4949 struct dsc$descriptor_s envdsc
=
4950 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4951 struct dsc$descriptor_s lnmdsc
=
4952 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4954 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4972 error ("execvp system call not implemented");
4981 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4982 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4983 char from_esn
[NAM$C_MAXRSS
];
4984 char to_esn
[NAM$C_MAXRSS
];
4986 from_fab
.fab$l_fna
= from
;
4987 from_fab
.fab$b_fns
= strlen (from
);
4988 from_fab
.fab$l_nam
= &from_nam
;
4989 from_fab
.fab$l_fop
= FAB$M_NAM
;
4991 from_nam
.nam$l_esa
= from_esn
;
4992 from_nam
.nam$b_ess
= sizeof from_esn
;
4994 to_fab
.fab$l_fna
= to
;
4995 to_fab
.fab$b_fns
= strlen (to
);
4996 to_fab
.fab$l_nam
= &to_nam
;
4997 to_fab
.fab$l_fop
= FAB$M_NAM
;
4999 to_nam
.nam$l_esa
= to_esn
;
5000 to_nam
.nam$b_ess
= sizeof to_esn
;
5002 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
5008 if (status
== RMS$_DEV
)
5012 vaxc$errno
= status
;
5017 /* This function renames a file like `rename', but it strips
5018 the version number from the "to" filename, such that the "to" file is
5019 will always be a new version. It also sets the file protection once it is
5020 finished. The protection that we will use is stored in fab_final_pro,
5021 and was set when we did a creat_copy_attrs to create the file that we
5024 We could use the chmod function, but Eunichs uses 3 bits per user category
5025 to describe the protection, and VMS uses 4 (write and delete are separate
5026 bits). To maintain portability, the VMS implementation of `chmod' wires
5027 the W and D bits together. */
5030 static struct fibdef fib
; /* We need this initialized to zero */
5031 char vms_file_written
[NAM$C_MAXRSS
];
5034 rename_sans_version (from
,to
)
5041 struct FAB to_fab
= cc$rms_fab
;
5042 struct NAM to_nam
= cc$rms_nam
;
5043 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
5044 struct dsc$descriptor fib_attr
[2]
5045 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
5046 char to_esn
[NAM$C_MAXRSS
];
5048 $
DESCRIPTOR (disk
,to_esn
);
5050 to_fab
.fab$l_fna
= to
;
5051 to_fab
.fab$b_fns
= strlen (to
);
5052 to_fab
.fab$l_nam
= &to_nam
;
5053 to_fab
.fab$l_fop
= FAB$M_NAM
;
5055 to_nam
.nam$l_esa
= to_esn
;
5056 to_nam
.nam$b_ess
= sizeof to_esn
;
5058 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
5060 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
5061 *(to_nam
.nam$l_ver
) = '\0';
5063 stat
= rename (from
, to_esn
);
5067 strcpy (vms_file_written
, to_esn
);
5069 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
5070 to_fab
.fab$b_fns
= strlen (vms_file_written
);
5072 /* Now set the file protection to the correct value */
5073 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
5075 /* Copy these fields into the fib */
5076 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
5077 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
5078 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
5080 SYS$
CLOSE (&to_fab
, 0, 0);
5082 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
5085 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
5086 0, 0, 0, &fib_attr
, 0);
5089 stat
= SYS$
DASSGN (chan
);
5092 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
5103 unsigned short fid
[3];
5104 char esa
[NAM$C_MAXRSS
];
5107 fab
.fab$l_fop
= FAB$M_OFP
;
5108 fab
.fab$l_fna
= file
;
5109 fab
.fab$b_fns
= strlen (file
);
5110 fab
.fab$l_nam
= &nam
;
5113 nam
.nam$l_esa
= esa
;
5114 nam
.nam$b_ess
= NAM$C_MAXRSS
;
5116 status
= SYS$
PARSE (&fab
);
5117 if ((status
& 1) == 0)
5120 vaxc$errno
= status
;
5123 status
= SYS$
SEARCH (&fab
);
5124 if ((status
& 1) == 0)
5127 vaxc$errno
= status
;
5131 fid
[0] = nam
.nam$w_fid
[0];
5132 fid
[1] = nam
.nam$w_fid
[1];
5133 fid
[2] = nam
.nam$w_fid
[2];
5135 fab
.fab$l_fna
= new;
5136 fab
.fab$b_fns
= strlen (new);
5138 status
= SYS$
PARSE (&fab
);
5139 if ((status
& 1) == 0)
5142 vaxc$errno
= status
;
5146 nam
.nam$w_fid
[0] = fid
[0];
5147 nam
.nam$w_fid
[1] = fid
[1];
5148 nam
.nam$w_fid
[2] = fid
[2];
5150 nam
.nam$l_esa
= nam
.nam$l_name
;
5151 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5153 status
= SYS$
ENTER (&fab
);
5154 if ((status
& 1) == 0)
5157 vaxc$errno
= status
;
5168 printf ("%s not yet implemented\r\n", badfunc
);
5169 reset_all_sys_modes ();
5176 /* Arrange to return a range centered on zero. */
5177 return rand () - (1 << 30);
5189 /* Called from init_sys_modes. */
5191 hft_init (struct tty_display_info
*tty_out
)
5195 /* If we're not on an HFT we shouldn't do any of this. We determine
5196 if we are on an HFT by trying to get an HFT error code. If this
5197 call fails, we're not on an HFT. */
5199 if (ioctl (0, HFQERROR
, &junk
) < 0)
5201 #else /* not IBMR2AIX */
5202 if (ioctl (0, HFQEIO
, 0) < 0)
5204 #endif /* not IBMR2AIX */
5206 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5207 as the rubout key's ASCII code. Here this is changed. The bug is that
5208 there's no way to determine the old mapping, so in reset_sys_modes
5209 we need to assume that the normal map had been present. Of course, this
5210 code also doesn't help if on a terminal emulator which doesn't understand
5214 struct hfkeymap keymap
;
5216 buf
.hf_bufp
= (char *)&keymap
;
5217 buf
.hf_buflen
= sizeof (keymap
);
5218 keymap
.hf_nkeys
= 2;
5219 keymap
.hfkey
[0].hf_kpos
= 15;
5220 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5222 keymap
.hfkey
[0].hf_keyidh
= '<';
5223 #else /* not IBMR2AIX */
5224 keymap
.hfkey
[0].hf_page
= '<';
5225 #endif /* not IBMR2AIX */
5226 keymap
.hfkey
[0].hf_char
= 127;
5227 keymap
.hfkey
[1].hf_kpos
= 15;
5228 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5230 keymap
.hfkey
[1].hf_keyidh
= '<';
5231 #else /* not IBMR2AIX */
5232 keymap
.hfkey
[1].hf_page
= '<';
5233 #endif /* not IBMR2AIX */
5234 keymap
.hfkey
[1].hf_char
= 127;
5235 hftctl (0, HFSKBD
, &buf
);
5239 /* Reset the rubout key to backspace. */
5242 hft_reset (struct tty_display_info
*tty_out
)
5245 struct hfkeymap keymap
;
5249 if (ioctl (0, HFQERROR
, &junk
) < 0)
5251 #else /* not IBMR2AIX */
5252 if (ioctl (0, HFQEIO
, 0) < 0)
5254 #endif /* not IBMR2AIX */
5256 buf
.hf_bufp
= (char *)&keymap
;
5257 buf
.hf_buflen
= sizeof (keymap
);
5258 keymap
.hf_nkeys
= 2;
5259 keymap
.hfkey
[0].hf_kpos
= 15;
5260 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5262 keymap
.hfkey
[0].hf_keyidh
= '<';
5263 #else /* not IBMR2AIX */
5264 keymap
.hfkey
[0].hf_page
= '<';
5265 #endif /* not IBMR2AIX */
5266 keymap
.hfkey
[0].hf_char
= 8;
5267 keymap
.hfkey
[1].hf_kpos
= 15;
5268 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5270 keymap
.hfkey
[1].hf_keyidh
= '<';
5271 #else /* not IBMR2AIX */
5272 keymap
.hfkey
[1].hf_page
= '<';
5273 #endif /* not IBMR2AIX */
5274 keymap
.hfkey
[1].hf_char
= 8;
5275 hftctl (0, HFSKBD
, &buf
);
5288 register int length
;
5292 long max_str
= 65535;
5294 while (length
> max_str
) {
5295 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5300 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5302 while (length
-- > 0)
5304 #endif /* not VMS */
5307 #endif /* no bzero */
5308 #endif /* BSTRING */
5310 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5313 /* Saying `void' requires a declaration, above, where bcopy is used
5314 and that declaration causes pain for systems where bcopy is a macro. */
5315 bcopy (b1
, b2
, length
)
5318 register int length
;
5321 long max_str
= 65535;
5323 while (length
> max_str
) {
5324 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5330 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5332 while (length
-- > 0)
5334 #endif /* not VMS */
5336 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5341 bcmp (b1
, b2
, length
) /* This could be a macro! */
5344 register int length
;
5347 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5348 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5350 return STR$
COMPARE (&src1
, &src2
);
5352 while (length
-- > 0)
5357 #endif /* not VMS */
5359 #endif /* no bcmp */
5360 #endif /* not BSTRING */
5362 #ifndef HAVE_STRSIGNAL
5369 if (0 <= code
&& code
< NSIG
)
5372 signame
= sys_errlist
[code
];
5374 /* Cast to suppress warning if the table has const char *. */
5375 signame
= (char *) sys_siglist
[code
];
5381 #endif /* HAVE_STRSIGNAL */
5383 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
5384 (do not change this comment) */