1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86,87,88,93,94,95, 1999, 2000
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
31 #include "blockinput.h"
35 /* It is essential to include stdlib.h so that this file picks up
36 the correct definitions of rand, srand, and RAND_MAX.
37 Otherwise random numbers will not work correctly. */
41 /* Nonzero means delete a process right away if it exits (process.c). */
42 static int delete_exited_processes
;
44 #endif /* macintosh */
46 #define min(x,y) ((x) > (y) ? (y) : (x))
50 #define write sys_write
55 #endif /* not WINDOWSNT */
57 /* Does anyone other than VMS need this? */
59 #define sys_fwrite fwrite
68 #endif /* TRY_AGAIN */
71 #include <sys/types.h>
75 /* Get _POSIX_VDISABLE, if it is available. */
85 #if !defined (USG) || defined (BSD_PGRPS)
87 #define setpgrp setpgid
91 /* Get SI_SRPC_DOMAIN, if it is available. */
92 #ifdef HAVE_SYS_SYSTEMINFO_H
93 #include <sys/systeminfo.h>
96 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
100 #include <sys/param.h>
104 extern unsigned start
__asm__ ("start");
126 #include <sys/file.h>
134 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
138 #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG)
139 because the vms compiler doesn't grok `defined' */
147 #endif /* not 4.1 bsd */
150 #include <sys/ioctl.h>
156 #ifdef BROKEN_TIOCGWINSZ
161 #if defined (USG) || defined (DGUX)
162 #include <sys/utsname.h>
163 #ifndef MEMORY_IN_STRING_H
166 #if defined (TIOCGWINSZ) || defined (ISC4_0)
168 #include <sys/sioctl.h>
171 #include <sys/stream.h>
172 #include <sys/ptem.h>
174 #endif /* TIOCGWINSZ or ISC4_0 */
175 #endif /* USG or DGUX */
177 extern int quit_char
;
179 #include "keyboard.h"
182 #include "termhooks.h"
183 #include "termchar.h"
184 #include "termopts.h"
185 #include "dispextern.h"
190 /* In process.h which conflicts with the local copy. */
192 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
193 int _CRTAPI1
_getpid (void);
196 #ifdef NONSYSTEM_DIR_LIBRARY
198 #endif /* NONSYSTEM_DIR_LIBRARY */
200 #include "syssignal.h"
207 #ifndef HAVE_STRUCT_UTIMBUF
208 /* We want to use utime rather than utimes, but we couldn't find the
209 structure declaration. We'll use the traditional one. */
217 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
223 #define LNOFLSH 0100000
226 static int baud_convert
[] =
231 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
232 1800, 2400, 4800, 9600, 19200, 38400
239 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
241 #if defined (HAVE_TERMIOS_H) && defined (LINUX)
249 /* The file descriptor for Emacs's input terminal.
250 Under Unix, this is normally zero except when using X;
251 under VMS, we place the input channel number here. */
254 void croak
P_ ((char *));
261 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
263 SIGMASKTYPE sigprocmask_set
;
266 /* Specify a different file descriptor for further input operations. */
275 /* Discard pending input on descriptor input_fd. */
281 struct emacs_tty buf
;
286 /* Discarding input is not safe when the input could contain
287 replies from the X server. So don't do it. */
288 if (read_socket_hook
)
293 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
294 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
300 ioctl (input_fd
, TIOCFLUSH
, &zero
);
302 #else /* not Apollo */
303 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
304 while (dos_keyread () != -1)
306 #else /* not MSDOS */
307 EMACS_GET_TTY (input_fd
, &buf
);
308 EMACS_SET_TTY (input_fd
, &buf
, 0);
309 #endif /* not MSDOS */
310 #endif /* not Apollo */
312 #endif /* not WINDOWSNT */
317 /* Arrange for character C to be read as the next input from
324 if (read_socket_hook
)
327 /* Should perhaps error if in batch mode */
329 ioctl (input_fd
, TIOCSTI
, &c
);
330 #else /* no TIOCSTI */
331 error ("Cannot stuff terminal input characters in this version of Unix");
332 #endif /* no TIOCSTI */
344 #ifdef INIT_BAUD_RATE
349 #else /* not DOS_NT */
353 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
354 &sg
.class, 12, 0, 0, 0, 0 );
355 emacs_ospeed
= sg
.xmit_baud
;
361 tcgetattr (input_fd
, &sg
);
362 emacs_ospeed
= cfgetospeed (&sg
);
363 #if defined (USE_GETOBAUD) && defined (getobaud)
364 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
365 if (emacs_ospeed
== 0)
366 emacs_ospeed
= getobaud (sg
.c_cflag
);
368 #else /* neither VMS nor TERMIOS */
374 tcgetattr (input_fd
, &sg
);
376 ioctl (input_fd
, TCGETA
, &sg
);
378 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
379 #else /* neither VMS nor TERMIOS nor TERMIO */
382 sg
.sg_ospeed
= B9600
;
383 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
385 emacs_ospeed
= sg
.sg_ospeed
;
386 #endif /* not HAVE_TERMIO */
387 #endif /* not HAVE_TERMIOS */
389 #endif /* not DOS_NT */
390 #endif /* not INIT_BAUD_RATE */
393 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
394 ? baud_convert
[emacs_ospeed
] : 9600);
401 set_exclusive_use (fd
)
405 ioctl (fd
, FIOCLEX
, 0);
407 /* Ok to do nothing if this feature does not exist */
412 wait_without_blocking ()
415 wait3 (0, WNOHANG
| WUNTRACED
, 0);
417 croak ("wait_without_blocking");
419 synch_process_alive
= 0;
422 #endif /* not subprocesses */
424 int wait_debugging
; /* Set nonzero to make following function work under dbx
425 (at least for bsd). */
428 wait_for_termination_signal ()
431 /* Wait for subprocess with process id `pid' to terminate and
432 make sure it will get eliminated (not remain forever as a zombie) */
435 wait_for_termination (pid
)
444 status
= SYS$
FORCEX (&pid
, 0, 0);
447 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
448 /* Note that kill returns -1 even if the process is just a zombie now.
449 But inevitably a SIGCHLD interrupt should be generated
450 and child_sig will do wait3 and make the process go away. */
451 /* There is some indication that there is a bug involved with
452 termination of subprocesses, perhaps involving a kernel bug too,
453 but no idea what it is. Just as a hunch we signal SIGCHLD to see
454 if that causes the problem to go away or get worse. */
455 sigsetmask (sigmask (SIGCHLD
));
456 if (0 > kill (pid
, 0))
458 sigsetmask (SIGEMPTYMASK
);
459 kill (getpid (), SIGCHLD
);
465 sigpause (SIGEMPTYMASK
);
466 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
467 #if defined (UNIPLUS)
468 if (0 > kill (pid
, 0))
471 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
472 #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */
473 sigblock (sigmask (SIGCHLD
));
474 if (0 > kill (pid
, 0))
476 sigunblock (sigmask (SIGCHLD
));
479 sigpause (SIGEMPTYMASK
);
480 #else /* not POSIX_SIGNALS */
481 #ifdef HAVE_SYSV_SIGPAUSE
483 if (0 > kill (pid
, 0))
489 #else /* not HAVE_SYSV_SIGPAUSE */
493 #else /* not WINDOWSNT */
494 if (0 > kill (pid
, 0))
496 /* Using sleep instead of pause avoids timing error.
497 If the inferior dies just before the sleep,
498 we lose just one second. */
500 #endif /* not WINDOWSNT */
501 #endif /* not HAVE_SYSV_SIGPAUSE */
502 #endif /* not POSIX_SIGNALS */
503 #endif /* not UNIPLUS */
504 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
506 #else /* not subprocesses */
509 #else /* not __DJGPP__ > 1 */
511 if (kill (pid
, 0) < 0)
517 if (status
== pid
|| status
== -1)
520 #endif /* not __DJGPP__ > 1*/
521 #endif /* not subprocesses */
528 * flush any pending output
529 * (may flush input as well; it does not matter the way we use it)
533 flush_pending_output (channel
)
537 /* If we try this, we get hit with SIGTTIN, because
538 the child's tty belongs to the child's pgrp. */
541 ioctl (channel
, TCFLSH
, 1);
545 /* 3rd arg should be ignored
546 but some 4.2 kernels actually want the address of an int
547 and nonzero means something different. */
548 ioctl (channel
, TIOCFLUSH
, &zero
);
555 /* Set up the terminal at the other end of a pseudo-terminal that
556 we will be controlling an inferior through.
557 It should not echo or do line-editing, since that is done
558 in Emacs. No padding needed for insertion into an Emacs buffer. */
561 child_setup_tty (out
)
567 EMACS_GET_TTY (out
, &s
);
569 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
570 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
571 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
573 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
574 /* No output delays */
576 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
577 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
579 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
582 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
585 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
587 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
588 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
590 /* Said to be unnecessary: */
591 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
592 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
595 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
596 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
597 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
598 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
601 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
605 /* AIX enhanced edit loses NULs, so disable it */
608 s
.main
.c_iflag
&= ~ASCEDIT
;
610 /* Also, PTY overloads NUL and BREAK.
611 don't ignore break, but don't signal either, so it looks like NUL. */
612 s
.main
.c_iflag
&= ~IGNBRK
;
613 s
.main
.c_iflag
&= ~BRKINT
;
614 /* QUIT and INTR work better as signals, so disable character forms */
615 s
.main
.c_cc
[VINTR
] = 0377;
616 #ifdef SIGNALS_VIA_CHARACTERS
617 /* the QUIT and INTR character are used in process_send_signal
618 so set them here to something useful. */
619 if (s
.main
.c_cc
[VQUIT
] == 0377)
620 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
621 if (s
.main
.c_cc
[VINTR
] == 0377)
622 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
623 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
624 /* QUIT and INTR work better as signals, so disable character forms */
625 s
.main
.c_cc
[VQUIT
] = 0377;
626 s
.main
.c_cc
[VINTR
] = 0377;
627 s
.main
.c_lflag
&= ~ISIG
;
628 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
629 s
.main
.c_cc
[VEOL
] = 0377;
630 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
633 #else /* not HAVE_TERMIO */
635 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
637 s
.main
.sg_flags
|= LPASS8
;
638 s
.main
.sg_erase
= 0377;
639 s
.main
.sg_kill
= 0377;
640 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
642 #endif /* not HAVE_TERMIO */
644 EMACS_SET_TTY (out
, &s
, 0);
653 ioctl (out
, FIOASYNC
, &zero
);
656 #endif /* not DOS_NT */
660 #endif /* subprocesses */
662 /* Record a signal code and the handler for it. */
666 SIGTYPE (*handler
) P_ ((int));
669 static void save_signal_handlers
P_ ((struct save_signal
*));
670 static void restore_signal_handlers
P_ ((struct save_signal
*));
672 /* Suspend the Emacs process; give terminal to its superior. */
678 /* "Foster" parentage allows emacs to return to a subprocess that attached
679 to the current emacs as a cheaper than starting a whole new process. This
680 is set up by KEPTEDITOR.COM. */
681 unsigned long parent_id
, foster_parent_id
;
684 fpid_string
= getenv ("EMACS_PARENT_PID");
685 if (fpid_string
!= NULL
)
687 sscanf (fpid_string
, "%x", &foster_parent_id
);
688 if (foster_parent_id
!= 0)
689 parent_id
= foster_parent_id
;
691 parent_id
= getppid ();
694 parent_id
= getppid ();
696 xfree (fpid_string
); /* On VMS, this was malloc'd */
698 if (parent_id
&& parent_id
!= 0xffffffff)
700 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
701 int status
= LIB$
ATTACH (&parent_id
) & 1;
702 signal (SIGINT
, oldsig
);
711 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
712 d_prompt
.a
= "Emacs: "; /* Just a reminder */
713 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
718 #if defined (SIGTSTP) && !defined (MSDOS)
721 int pgrp
= EMACS_GETPGRP (0);
722 EMACS_KILLPG (pgrp
, SIGTSTP
);
725 #else /* No SIGTSTP */
726 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
727 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
728 kill (getpid (), SIGQUIT
);
730 #else /* No SIGTSTP or USG_JOBCTRL */
732 /* On a system where suspending is not implemented,
733 instead fork a subshell and let it talk directly to the terminal
737 #endif /* no USG_JOBCTRL */
738 #endif /* no SIGTSTP */
742 /* Fork a subshell. */
749 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
751 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
754 struct save_signal saved_handlers
[5];
756 unsigned char *str
= 0;
759 saved_handlers
[0].code
= SIGINT
;
760 saved_handlers
[1].code
= SIGQUIT
;
761 saved_handlers
[2].code
= SIGTERM
;
763 saved_handlers
[3].code
= SIGIO
;
764 saved_handlers
[4].code
= 0;
766 saved_handlers
[3].code
= 0;
769 /* Mentioning current_buffer->buffer would mean including buffer.h,
770 which somehow wedges the hp compiler. So instead... */
772 dir
= intern ("default-directory");
773 if (NILP (Fboundp (dir
)))
775 dir
= Fsymbol_value (dir
);
779 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
780 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
781 len
= XSTRING (dir
)->size
;
782 bcopy (XSTRING (dir
)->data
, str
, len
);
783 if (str
[len
- 1] != '/') str
[len
++] = '/';
790 save_signal_handlers (saved_handlers
);
791 synch_process_alive
= 1;
792 #endif /* __DJGPP__ > 1 */
796 error ("Can't spawn subshell");
803 #ifdef DOS_NT /* MW, Aug 1993 */
806 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
809 sh
= (char *) egetenv ("SHELL");
813 /* Use our buffer's default directory for the subshell. */
815 chdir ((char *) str
);
818 close_process_descs (); /* Close Emacs's pipes/ptys */
821 #ifdef SET_EMACS_PRIORITY
823 extern int emacs_priority
;
825 if (emacs_priority
< 0)
826 nice (-emacs_priority
);
830 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
833 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
835 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
837 #else /* not MSDOS */
839 /* Waits for process completion */
840 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
843 write (1, "Can't execute subshell", 22);
844 #else /* not WINDOWSNT */
846 write (1, "Can't execute subshell", 22);
848 #endif /* not WINDOWSNT */
849 #endif /* not MSDOS */
852 /* Do this now if we did not do it before. */
853 #if !defined (MSDOS) || __DJGPP__ == 1
854 save_signal_handlers (saved_handlers
);
855 synch_process_alive
= 1;
859 wait_for_termination (pid
);
861 restore_signal_handlers (saved_handlers
);
862 synch_process_alive
= 0;
865 #endif /* !macintosh */
868 save_signal_handlers (saved_handlers
)
869 struct save_signal
*saved_handlers
;
871 while (saved_handlers
->code
)
873 saved_handlers
->handler
874 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
880 restore_signal_handlers (saved_handlers
)
881 struct save_signal
*saved_handlers
;
883 while (saved_handlers
->code
)
885 signal (saved_handlers
->code
, saved_handlers
->handler
);
899 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
900 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
902 interrupts_deferred
= 0;
911 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
916 if (read_socket_hook
)
920 sigunblock (sigmask (SIGWINCH
));
922 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
924 interrupts_deferred
= 0;
930 if (read_socket_hook
)
934 sigblock (sigmask (SIGWINCH
));
936 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
937 interrupts_deferred
= 1;
940 #else /* no FASYNC */
941 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
948 if (read_socket_hook
)
951 ioctl (input_fd
, FIOASYNC
, &on
);
952 interrupts_deferred
= 0;
960 if (read_socket_hook
)
963 ioctl (input_fd
, FIOASYNC
, &off
);
964 interrupts_deferred
= 1;
967 #else /* not FASYNC, not STRIDE */
979 if (read_socket_hook
)
983 sigaddset (&st
, SIGIO
);
984 ioctl (input_fd
, FIOASYNC
, &on
);
985 interrupts_deferred
= 0;
986 sigprocmask (SIG_UNBLOCK
, &st
, (sigset_t
*)0);
994 if (read_socket_hook
)
997 ioctl (input_fd
, FIOASYNC
, &off
);
998 interrupts_deferred
= 1;
1001 #else /* ! _CX_UX */
1006 if (read_socket_hook
)
1009 croak ("request_sigio");
1015 if (read_socket_hook
)
1018 croak ("unrequest_sigio");
1024 #endif /* F_SETFL */
1026 /* Saving and restoring the process group of Emacs's terminal. */
1030 /* The process group of which Emacs was a member when it initially
1033 If Emacs was in its own process group (i.e. inherited_pgroup ==
1034 getpid ()), then we know we're running under a shell with job
1035 control (Emacs would never be run as part of a pipeline).
1038 If Emacs was not in its own process group, then we know we're
1039 running under a shell (or a caller) that doesn't know how to
1040 separate itself from Emacs (like sh). Emacs must be in its own
1041 process group in order to receive SIGIO correctly. In this
1042 situation, we put ourselves in our own pgroup, forcibly set the
1043 tty's pgroup to our pgroup, and make sure to restore and reinstate
1044 the tty's pgroup just like any other terminal setting. If
1045 inherited_group was not the tty's pgroup, then we'll get a
1046 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1047 it goes foreground in the future, which is what should happen. */
1048 int inherited_pgroup
;
1050 /* Split off the foreground process group to Emacs alone.
1051 When we are in the foreground, but not started in our own process
1052 group, redirect the TTY to point to our own process group. We need
1053 to be in our own process group to receive SIGIO properly. */
1055 narrow_foreground_group ()
1059 setpgrp (0, inherited_pgroup
);
1060 if (inherited_pgroup
!= me
)
1061 EMACS_SET_TTY_PGRP (input_fd
, &me
);
1065 /* Set the tty to our original foreground group. */
1067 widen_foreground_group ()
1069 if (inherited_pgroup
!= getpid ())
1070 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
1071 setpgrp (0, inherited_pgroup
);
1074 #endif /* BSD_PGRPS */
1076 /* Getting and setting emacs_tty structures. */
1078 /* Set *TC to the parameters associated with the terminal FD.
1079 Return zero if all's well, or -1 if we ran into an error we
1080 couldn't deal with. */
1082 emacs_get_tty (fd
, settings
)
1084 struct emacs_tty
*settings
;
1086 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1088 /* We have those nifty POSIX tcmumbleattr functions. */
1089 bzero (&settings
->main
, sizeof (settings
->main
));
1090 if (tcgetattr (fd
, &settings
->main
) < 0)
1095 /* The SYSV-style interface? */
1096 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1101 /* Vehemently Monstrous System? :-) */
1102 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1103 &settings
->main
.class, 12, 0, 0, 0, 0)
1109 /* I give up - I hope you have the BSD ioctls. */
1110 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1112 #endif /* not DOS_NT */
1117 /* Suivant - Do we have to get struct ltchars data? */
1119 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1123 /* How about a struct tchars and a wordful of lmode bits? */
1125 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1126 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1130 /* We have survived the tempest. */
1135 /* Set the parameters of the tty on FD according to the contents of
1136 *SETTINGS. If FLUSHP is non-zero, we discard input.
1137 Return 0 if all went well, and -1 if anything failed. */
1140 emacs_set_tty (fd
, settings
, flushp
)
1142 struct emacs_tty
*settings
;
1145 /* Set the primary parameters - baud rate, character size, etcetera. */
1148 /* We have those nifty POSIX tcmumbleattr functions.
1149 William J. Smith <wjs@wiis.wang.com> writes:
1150 "POSIX 1003.1 defines tcsetattr to return success if it was
1151 able to perform any of the requested actions, even if some
1152 of the requested actions could not be performed.
1153 We must read settings back to ensure tty setup properly.
1154 AIX requires this to keep tty from hanging occasionally." */
1155 /* This make sure that we don't loop indefinitely in here. */
1156 for (i
= 0 ; i
< 10 ; i
++)
1157 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1168 bzero (&new, sizeof (new));
1169 /* Get the current settings, and see if they're what we asked for. */
1170 tcgetattr (fd
, &new);
1171 /* We cannot use memcmp on the whole structure here because under
1172 * aix386 the termios structure has some reserved field that may
1175 if ( new.c_iflag
== settings
->main
.c_iflag
1176 && new.c_oflag
== settings
->main
.c_oflag
1177 && new.c_cflag
== settings
->main
.c_cflag
1178 && new.c_lflag
== settings
->main
.c_lflag
1179 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1187 /* The SYSV-style interface? */
1188 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1193 /* Vehemently Monstrous System? :-) */
1194 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1195 &settings
->main
.class, 12, 0, 0, 0, 0)
1201 /* I give up - I hope you have the BSD ioctls. */
1202 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1204 #endif /* not DOS_NT */
1210 /* Suivant - Do we have to get struct ltchars data? */
1212 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1216 /* How about a struct tchars and a wordful of lmode bits? */
1218 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1219 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1223 /* We have survived the tempest. */
1228 /* The initial tty mode bits */
1229 struct emacs_tty old_tty
;
1231 /* 1 if we have been through init_sys_modes. */
1234 /* 1 if outer tty status has been recorded. */
1238 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1243 #ifndef F_SETOWN_BUG
1245 int old_fcntl_owner
;
1246 #endif /* F_SETOWN */
1247 #endif /* F_SETOWN_BUG */
1249 /* This may also be defined in stdio,
1250 but if so, this does no harm,
1251 and using the same name avoids wasting the other one's space. */
1254 extern char *_sobuf
;
1256 #if defined (USG) || defined (DGUX)
1257 unsigned char _sobuf
[BUFSIZ
+8];
1259 char _sobuf
[BUFSIZ
];
1264 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1267 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1273 struct emacs_tty tty
;
1276 /* cus-start.el complains if delete-exited-processes is not defined */
1277 #ifndef subprocesses
1278 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
1279 "*Non-nil means delete processes immediately when they exit.\n\
1280 nil means don't delete them until `list-processes' is run.");
1281 delete_exited_processes
= 0;
1283 #endif /* not macintosh */
1287 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1288 extern int (*interrupt_signal
) ();
1292 Vtty_erase_char
= Qnil
;
1299 input_ef
= get_kbd_event_flag ();
1300 /* LIB$GET_EF (&input_ef); */
1301 SYS$
CLREF (input_ef
);
1302 waiting_for_ast
= 0;
1304 timer_ef
= get_timer_event_flag ();
1305 /* LIB$GET_EF (&timer_ef); */
1306 SYS$
CLREF (timer_ef
);
1310 LIB$
GET_EF (&process_ef
);
1311 SYS$
CLREF (process_ef
);
1313 if (input_ef
/ 32 != process_ef
/ 32)
1314 croak ("Input and process event flags in different clusters.");
1316 if (input_ef
/ 32 != timer_ef
/ 32)
1317 croak ("Input and timer event flags in different clusters.");
1319 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1320 ((unsigned) 1 << (process_ef
% 32));
1322 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1323 ((unsigned) 1 << (timer_ef
% 32));
1325 sys_access_reinit ();
1327 #endif /* not VMS */
1330 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1331 narrow_foreground_group ();
1334 #ifdef HAVE_WINDOW_SYSTEM
1335 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1336 needs the initialization code below. */
1337 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1340 EMACS_GET_TTY (input_fd
, &old_tty
);
1346 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1347 XSETINT (Vtty_erase_char
, old_tty
.main
.c_cc
[VERASE
]);
1350 /* This allows meta to be sent on 8th bit. */
1351 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1353 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1354 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1355 #ifdef INLCR /* I'm just being cautious,
1356 since I can't check how widespread INLCR is--rms. */
1357 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1360 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1362 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1363 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1365 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1367 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1370 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1372 tty
.main
.c_iflag
&= ~IXANY
;
1376 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1377 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1379 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1383 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1384 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1387 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1388 /* Set up C-g for both SIGQUIT and SIGINT.
1389 We don't know which we will get, but we handle both alike
1390 so which one it really gives us does not matter. */
1391 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1392 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1393 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1395 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1399 #if defined (mips) || defined (HAVE_TCATTR)
1401 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1404 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1405 #endif /* V_DSUSP */
1406 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1407 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1410 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1413 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1414 #endif /* VREPRINT */
1416 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1417 #endif /* VWERASE */
1419 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1420 #endif /* VDISCARD */
1425 tty
.main
.c_cc
[VSTART
] = '\021';
1428 tty
.main
.c_cc
[VSTOP
] = '\023';
1434 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1437 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1440 #endif /* mips or HAVE_TCATTR */
1442 #ifdef SET_LINE_DISCIPLINE
1443 /* Need to explicitly request TERMIODISC line discipline or
1444 Ultrix's termios does not work correctly. */
1445 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1449 /* AIX enhanced edit loses NULs, so disable it. */
1450 tty
.main
.c_line
= 0;
1451 tty
.main
.c_iflag
&= ~ASCEDIT
;
1453 tty
.main
.c_cc
[VSTRT
] = 255;
1454 tty
.main
.c_cc
[VSTOP
] = 255;
1455 tty
.main
.c_cc
[VSUSP
] = 255;
1456 tty
.main
.c_cc
[VDSUSP
] = 255;
1457 #endif /* IBMR2AIX */
1461 tty
.main
.c_cc
[VSTART
] = '\021';
1464 tty
.main
.c_cc
[VSTOP
] = '\023';
1467 /* Also, PTY overloads NUL and BREAK.
1468 don't ignore break, but don't signal either, so it looks like NUL.
1469 This really serves a purpose only if running in an XTERM window
1470 or via TELNET or the like, but does no harm elsewhere. */
1471 tty
.main
.c_iflag
&= ~IGNBRK
;
1472 tty
.main
.c_iflag
&= ~BRKINT
;
1474 #else /* if not HAVE_TERMIO */
1476 tty
.main
.tt_char
|= TT$M_NOECHO
;
1478 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1480 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1482 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1483 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1484 #else /* not VMS (BSD, that is) */
1486 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1487 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1489 tty
.main
.sg_flags
|= ANYP
;
1490 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1491 #endif /* not DOS_NT */
1492 #endif /* not VMS (BSD, that is) */
1493 #endif /* not HAVE_TERMIO */
1495 /* If going to use CBREAK mode, we must request C-g to interrupt
1496 and turn off start and stop chars, etc. If not going to use
1497 CBREAK mode, do this anyway so as to turn off local flow
1498 control for user coming over network on 4.2; in this case,
1499 only t_stopc and t_startc really matter. */
1502 /* Note: if not using CBREAK mode, it makes no difference how we
1504 tty
.tchars
= new_tchars
;
1505 tty
.tchars
.t_intrc
= quit_char
;
1508 tty
.tchars
.t_startc
= '\021';
1509 tty
.tchars
.t_stopc
= '\023';
1512 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1514 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1515 anything, and leaving it in breaks the meta key. Go figure. */
1516 tty
.lmode
&= ~LLITOUT
;
1523 #endif /* HAVE_TCHARS */
1524 #endif /* not HAVE_TERMIO */
1527 tty
.ltchars
= new_ltchars
;
1528 #endif /* HAVE_LTCHARS */
1529 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1531 internal_terminal_init ();
1535 EMACS_SET_TTY (input_fd
, &tty
, 0);
1537 /* This code added to insure that, if flow-control is not to be used,
1538 we have an unlocked terminal at the start. */
1541 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1545 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1549 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1551 if (!flow_control
) tcflow (input_fd
, TCOON
);
1559 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1560 to be only LF. This is the way that is done. */
1563 if (ioctl (1, HFTGETID
, &tty
) != -1)
1564 write (1, "\033[20l", 5);
1570 /* Appears to do nothing when in PASTHRU mode.
1571 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1572 interrupt_signal, oob_chars, 0, 0, 0, 0);
1574 queue_kbd_input (0);
1579 #ifndef F_SETOWN_BUG
1580 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1582 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1584 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1585 fcntl (input_fd
, F_SETOWN
, getpid ());
1586 init_sigio (input_fd
);
1588 #endif /* F_GETOWN */
1589 #endif /* F_SETOWN_BUG */
1590 #endif /* F_SETFL */
1593 if (interrupt_input
)
1594 init_sigio (input_fd
);
1597 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1601 /* This symbol is defined on recent USG systems.
1602 Someone says without this call USG won't really buffer the file
1603 even with a call to setbuf. */
1604 setvbuf (stdout
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1606 setbuf (stdout
, (char *) _sobuf
);
1608 #ifdef HAVE_WINDOW_SYSTEM
1609 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1610 needs the initialization code below. */
1611 if (EQ (Vwindow_system
, Qnil
)
1613 /* When running in tty mode on NT/Win95, we have a read_socket
1614 hook, but still need the rest of the initialization code below. */
1615 && (! read_socket_hook
)
1619 set_terminal_modes ();
1622 && FRAMEP (Vterminal_frame
)
1623 && FRAME_TERMCAP_P (XFRAME (Vterminal_frame
)))
1624 init_frame_faces (XFRAME (Vterminal_frame
));
1626 if (term_initted
&& no_redraw_on_reenter
)
1628 if (display_completed
)
1629 direct_output_forward_char (0);
1634 if (FRAMEP (Vterminal_frame
))
1635 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1641 /* Return nonzero if safe to use tabs in output.
1642 At the time this is called, init_sys_modes has not been done yet. */
1647 struct emacs_tty tty
;
1649 EMACS_GET_TTY (input_fd
, &tty
);
1650 return EMACS_TTY_TABS_OK (&tty
);
1653 /* Get terminal size from system.
1654 Store number of lines into *HEIGHTP and width into *WIDTHP.
1655 We store 0 if there's no valid information. */
1658 get_frame_size (widthp
, heightp
)
1659 int *widthp
, *heightp
;
1665 struct winsize size
;
1667 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1668 *widthp
= *heightp
= 0;
1671 *widthp
= size
.ws_col
;
1672 *heightp
= size
.ws_row
;
1678 /* SunOS - style. */
1679 struct ttysize size
;
1681 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1682 *widthp
= *heightp
= 0;
1685 *widthp
= size
.ts_cols
;
1686 *heightp
= size
.ts_lines
;
1692 struct sensemode tty
;
1694 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1695 &tty
.class, 12, 0, 0, 0, 0);
1696 *widthp
= tty
.scr_wid
;
1697 *heightp
= tty
.scr_len
;
1701 *widthp
= ScreenCols ();
1702 *heightp
= ScreenRows ();
1703 #else /* system doesn't know size */
1708 #endif /* not VMS */
1709 #endif /* not SunOS-style */
1710 #endif /* not BSD-style */
1713 /* Set the logical window size associated with descriptor FD
1714 to HEIGHT and WIDTH. This is used mainly with ptys. */
1717 set_window_size (fd
, height
, width
)
1718 int fd
, height
, width
;
1723 struct winsize size
;
1724 size
.ws_row
= height
;
1725 size
.ws_col
= width
;
1727 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1728 return 0; /* error */
1735 /* SunOS - style. */
1736 struct ttysize size
;
1737 size
.ts_lines
= height
;
1738 size
.ts_cols
= width
;
1740 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1746 #endif /* not SunOS-style */
1747 #endif /* not BSD-style */
1751 /* Prepare the terminal for exiting Emacs; move the cursor to the
1752 bottom of the frame, turn off interrupt-driven I/O, etc. */
1765 #ifdef HAVE_WINDOW_SYSTEM
1766 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1767 needs the clean-up code below. */
1768 if (!EQ (Vwindow_system
, Qnil
)
1770 /* When running in tty mode on NT/Win95, we have a read_socket
1771 hook, but still need the rest of the clean-up code below. */
1777 sf
= SELECTED_FRAME ();
1778 cursor_to (FRAME_HEIGHT (sf
) - 1, 0);
1779 clear_end_of_line (FRAME_WIDTH (sf
));
1780 /* clear_end_of_line may move the cursor */
1781 cursor_to (FRAME_HEIGHT (sf
) - 1, 0);
1782 #if defined (IBMR2AIX) && defined (AIXHFT)
1784 /* HFT devices normally use ^J as a LF/CR. We forced it to
1785 do the LF only. Now, we need to reset it. */
1788 if (ioctl (1, HFTGETID
, &tty
) != -1)
1789 write (1, "\033[20h", 5);
1793 reset_terminal_modes ();
1797 /* Avoid possible loss of output when changing terminal modes. */
1798 fsync (fileno (stdout
));
1803 #ifndef F_SETOWN_BUG
1804 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1805 if (interrupt_input
)
1808 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1810 #endif /* F_SETOWN */
1811 #endif /* F_SETOWN_BUG */
1813 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1815 #endif /* F_SETFL */
1817 if (interrupt_input
)
1822 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1825 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1829 #ifdef SET_LINE_DISCIPLINE
1830 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1831 A different old line discipline is therefore not restored, yet.
1832 Restore the old line discipline by hand. */
1833 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1841 widen_foreground_group ();
1847 /* Set up the proper status flags for use of a pty. */
1853 /* I'm told that TOICREMOTE does not mean control chars
1854 "can't be sent" but rather that they don't have
1855 input-editing or signaling effects.
1856 That should be good, because we have other ways
1857 to do those things in Emacs.
1858 However, telnet mode seems not to work on 4.2.
1859 So TIOCREMOTE is turned off now. */
1861 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1862 will hang. In particular, the "timeout" feature (which
1863 causes a read to return if there is no data available)
1864 does this. Also it is known that telnet mode will hang
1865 in such a way that Emacs must be stopped (perhaps this
1866 is the same problem).
1868 If TIOCREMOTE is turned off, then there is a bug in
1869 hp-ux which sometimes loses data. Apparently the
1870 code which blocks the master process when the internal
1871 buffer fills up does not work. Other than this,
1872 though, everything else seems to work fine.
1874 Since the latter lossage is more benign, we may as well
1875 lose that way. -- cph */
1877 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1880 ioctl (fd
, FIONBIO
, &on
);
1885 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1886 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1887 /* cause EMACS not to die when it should, i.e., when its own controlling */
1888 /* tty goes away. I've complained to the AIX developers, and they may */
1889 /* change this behavior, but I'm not going to hold my breath. */
1890 signal (SIGHUP
, SIG_IGN
);
1893 #endif /* HAVE_PTYS */
1897 /* Assigning an input channel is done at the start of Emacs execution.
1898 This is called each time Emacs is resumed, also, but does nothing
1899 because input_chain is no longer zero. */
1908 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1914 /* Deassigning the input channel is done before exiting. */
1919 return SYS$
DASSGN (input_fd
);
1924 /* Request reading one character into the keyboard buffer.
1925 This is done as soon as the buffer becomes empty. */
1931 extern kbd_input_ast ();
1933 waiting_for_ast
= 0;
1935 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1936 &input_iosb
, kbd_input_ast
, 1,
1937 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1942 /* Ast routine that is called when keyboard input comes in
1943 in accord with the SYS$QIO above. */
1948 register int c
= -1;
1949 int old_errno
= errno
;
1950 extern EMACS_TIME
*input_available_clear_time
;
1952 if (waiting_for_ast
)
1953 SYS$
SETEF (input_ef
);
1954 waiting_for_ast
= 0;
1957 if (input_count
== 25)
1959 printf ("Ast # %d,", input_count
);
1960 printf (" iosb = %x, %x, %x, %x",
1961 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1964 if (input_iosb
.offset
)
1968 printf (", char = 0%o", c
);
1980 struct input_event e
;
1981 e
.kind
= ascii_keystroke
;
1982 XSETINT (e
.code
, c
);
1983 e
.frame_or_window
= selected_frame
;
1984 kbd_buffer_store_event (&e
);
1986 if (input_available_clear_time
)
1987 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1991 /* Wait until there is something in kbd_buffer. */
1994 wait_for_kbd_input ()
1996 extern int have_process_input
, process_exited
;
1998 /* If already something, avoid doing system calls. */
1999 if (detect_input_pending ())
2003 /* Clear a flag, and tell ast routine above to set it. */
2004 SYS$
CLREF (input_ef
);
2005 waiting_for_ast
= 1;
2006 /* Check for timing error: ast happened while we were doing that. */
2007 if (!detect_input_pending ())
2009 /* No timing error: wait for flag to be set. */
2010 set_waiting_for_input (0);
2011 SYS$
WFLOR (input_ef
, input_eflist
);
2012 clear_waiting_for_input (0);
2013 if (!detect_input_pending ())
2014 /* Check for subprocess input availability */
2016 int dsp
= have_process_input
|| process_exited
;
2018 SYS$
CLREF (process_ef
);
2019 if (have_process_input
)
2020 process_command_input ();
2025 update_mode_lines
++;
2026 prepare_menu_bars ();
2027 redisplay_preserve_echo_area ();
2031 waiting_for_ast
= 0;
2034 /* Get rid of any pending QIO, when we are about to suspend
2035 or when we want to throw away pending input.
2036 We wait for a positive sign that the AST routine has run
2037 and therefore there is no I/O request queued when we return.
2038 SYS$SETAST is used to avoid a timing error. */
2044 printf ("At end_kbd_input.\n");
2048 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2050 SYS$
CANCEL (input_fd
);
2055 /* Clear a flag, and tell ast routine above to set it. */
2056 SYS$
CLREF (input_ef
);
2057 waiting_for_ast
= 1;
2059 SYS$
CANCEL (input_fd
);
2061 SYS$
WAITFR (input_ef
);
2062 waiting_for_ast
= 0;
2065 /* Wait for either input available or time interval expiry. */
2068 input_wait_timeout (timeval
)
2069 int timeval
; /* Time to wait, in seconds */
2072 static int zero
= 0;
2073 static int large
= -10000000;
2075 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2077 /* If already something, avoid doing system calls. */
2078 if (detect_input_pending ())
2082 /* Clear a flag, and tell ast routine above to set it. */
2083 SYS$
CLREF (input_ef
);
2084 waiting_for_ast
= 1;
2085 /* Check for timing error: ast happened while we were doing that. */
2086 if (!detect_input_pending ())
2088 /* No timing error: wait for flag to be set. */
2090 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2091 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2093 waiting_for_ast
= 0;
2096 /* The standard `sleep' routine works some other way
2097 and it stops working if you have ever quit out of it.
2098 This one continues to work. */
2104 static int zero
= 0;
2105 static int large
= -10000000;
2107 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2110 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2111 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2129 croak ("request sigio");
2135 croak ("unrequest sigio");
2140 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2145 #ifndef SYSTEM_MALLOC
2152 /* Some systems that cannot dump also cannot implement these. */
2155 * Return the address of the start of the text segment prior to
2156 * doing an unexec. After unexec the return value is undefined.
2157 * See crt0.c for further explanation and _start.
2161 #if !(defined (__NetBSD__) && defined (__ELF__))
2162 #ifndef HAVE_TEXT_START
2167 return ((char *) TEXT_START
);
2171 return ((char *) csrt
);
2172 #else /* not GOULD */
2173 extern int _start ();
2174 return ((char *) _start
);
2176 #endif /* TEXT_START */
2178 #endif /* not HAVE_TEXT_START */
2182 * Return the address of the start of the data segment prior to
2183 * doing an unexec. After unexec the return value is undefined.
2184 * See crt0.c for further information and definition of data_start.
2186 * Apparently, on BSD systems this is etext at startup. On
2187 * USG systems (swapping) this is highly mmu dependent and
2188 * is also dependent on whether or not the program is running
2189 * with shared text. Generally there is a (possibly large)
2190 * gap between end of text and start of data with shared text.
2192 * On Uniplus+ systems with shared text, data starts at a
2193 * fixed address. Each port (from a given oem) is generally
2194 * different, and the specific value of the start of data can
2195 * be obtained via the UniPlus+ specific "uvar" system call,
2196 * however the method outlined in crt0.c seems to be more portable.
2198 * Probably what will have to happen when a USG unexec is available,
2199 * at least on UniPlus, is temacs will have to be made unshared so
2200 * that text and data are contiguous. Then once loadup is complete,
2201 * unexec will produce a shared executable where the data can be
2202 * at the normal shared text boundary and the startofdata variable
2203 * will be patched by unexec to the correct value.
2211 return ((char *) DATA_START
);
2213 #ifdef ORDINARY_LINK
2215 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2216 * data_start isn't defined. We take the address of environ, which
2217 * is known to live at or near the start of the system crt0.c, and
2218 * we don't sweat the handful of bytes that might lose.
2220 extern char **environ
;
2222 return ((char *) &environ
);
2224 extern int data_start
;
2225 return ((char *) &data_start
);
2226 #endif /* ORDINARY_LINK */
2227 #endif /* DATA_START */
2229 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2232 /* Some systems that cannot dump also cannot implement these. */
2235 * Return the address of the end of the text segment prior to
2236 * doing an unexec. After unexec the return value is undefined.
2243 return ((char *) TEXT_END
);
2246 return ((char *) &etext
);
2251 * Return the address of the end of the data segment prior to
2252 * doing an unexec. After unexec the return value is undefined.
2259 return ((char *) DATA_END
);
2262 return ((char *) &edata
);
2266 #endif /* not CANNOT_DUMP */
2268 /* init_system_name sets up the string for the Lisp function
2269 system-name to return. */
2275 extern Lisp_Object Vsystem_name
;
2280 #include <sys/socket.h>
2282 #endif /* HAVE_SOCKETS */
2283 #endif /* not VMS */
2284 #endif /* not BSD4_1 */
2290 Vsystem_name
= build_string (sysname
);
2294 if ((sp
= egetenv ("SYS$NODE")) == 0)
2295 Vsystem_name
= build_string ("vax-vms");
2296 else if ((end
= index (sp
, ':')) == 0)
2297 Vsystem_name
= build_string (sp
);
2299 Vsystem_name
= make_string (sp
, end
- sp
);
2301 #ifndef HAVE_GETHOSTNAME
2304 Vsystem_name
= build_string (uts
.nodename
);
2305 #else /* HAVE_GETHOSTNAME */
2306 unsigned int hostname_size
= 256;
2307 char *hostname
= (char *) alloca (hostname_size
);
2309 /* Try to get the host name; if the buffer is too short, try
2310 again. Apparently, the only indication gethostname gives of
2311 whether the buffer was large enough is the presence or absence
2312 of a '\0' in the string. Eech. */
2315 gethostname (hostname
, hostname_size
- 1);
2316 hostname
[hostname_size
- 1] = '\0';
2318 /* Was the buffer large enough for the '\0'? */
2319 if (strlen (hostname
) < hostname_size
- 1)
2322 hostname_size
<<= 1;
2323 hostname
= (char *) alloca (hostname_size
);
2326 /* Turn the hostname into the official, fully-qualified hostname.
2327 Don't do this if we're going to dump; this can confuse system
2328 libraries on some machines and make the dumped emacs core dump. */
2331 #endif /* not CANNOT_DUMP */
2332 if (! index (hostname
, '.'))
2336 for (count
= 0;; count
++)
2341 hp
= gethostbyname (hostname
);
2343 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2348 Fsleep_for (make_number (1), Qnil
);
2352 char *fqdn
= (char *) hp
->h_name
;
2355 if (!index (fqdn
, '.'))
2357 /* We still don't have a fully qualified domain name.
2358 Try to find one in the list of alternate names */
2359 char **alias
= hp
->h_aliases
;
2360 while (*alias
&& !index (*alias
, '.'))
2367 /* Convert the host name to lower case. */
2368 /* Using ctype.h here would introduce a possible locale
2369 dependence that is probably wrong for hostnames. */
2373 if (*p
>= 'A' && *p
<= 'Z')
2380 #endif /* HAVE_SOCKETS */
2381 /* We used to try using getdomainname here,
2382 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2383 getdomainname gets the NIS/YP domain which often is not the same
2384 as in Internet domain name. */
2385 #if 0 /* Turned off because sysinfo is not really likely to return the
2386 correct Internet domain. */
2387 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2388 if (! index (hostname
, '.'))
2390 /* The hostname is not fully qualified. Append the domain name. */
2392 int hostlen
= strlen (hostname
);
2393 int domain_size
= 256;
2397 char *domain
= (char *) alloca (domain_size
+ 1);
2398 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2399 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2400 if (sys_domain_size
<= 0)
2402 if (domain_size
< sys_domain_size
)
2404 domain_size
= sys_domain_size
;
2407 strcpy (fqdn
, hostname
);
2408 if (domain
[0] == '.')
2409 strcpy (fqdn
+ hostlen
, domain
);
2410 else if (domain
[0] != 0)
2412 fqdn
[hostlen
] = '.';
2413 strcpy (fqdn
+ hostlen
+ 1, domain
);
2419 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2421 Vsystem_name
= build_string (hostname
);
2422 #endif /* HAVE_GETHOSTNAME */
2427 for (p
= XSTRING (Vsystem_name
)->data
; *p
; p
++)
2428 if (*p
== ' ' || *p
== '\t')
2435 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2437 #include "sysselect.h"
2440 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2441 /* Cause explanatory error message at compile time,
2442 since the select emulation is not good enough for X. */
2443 int *x
= &x_windows_lose_if_no_select_system_call
;
2446 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2447 * Only checks read descriptors.
2449 /* How long to wait between checking fds in select */
2450 #define SELECT_PAUSE 1
2453 /* For longjmp'ing back to read_input_waiting. */
2455 jmp_buf read_alarm_throw
;
2457 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2458 The read_socket_hook function sets this to 1 while it is waiting. */
2460 int read_alarm_should_throw
;
2468 #else /* not BSD4_1 */
2469 signal (SIGALRM
, SIG_IGN
);
2470 #endif /* not BSD4_1 */
2471 if (read_alarm_should_throw
)
2472 longjmp (read_alarm_throw
, 1);
2476 /* Only rfds are checked. */
2478 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2480 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2481 EMACS_TIME
*timeout
;
2487 extern int proc_buffered_char
[];
2488 #ifndef subprocesses
2489 int process_tick
= 0, update_tick
= 0;
2491 extern int process_tick
, update_tick
;
2495 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2496 /* If we're using X, then the native select will work; we only need the
2497 emulation for non-X usage. */
2498 if (!NILP (Vwindow_system
))
2499 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2501 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2502 local_timeout
= &timeoutval
;
2514 /* If we are looking only for the terminal, with no timeout,
2515 just read it and wait -- that's more efficient. */
2516 if (*local_timeout
== 100000 && process_tick
== update_tick
2517 && FD_ISSET (0, &orfds
))
2520 for (fd
= 1; fd
< nfds
; ++fd
)
2521 if (FD_ISSET (fd
, &orfds
))
2523 if (! detect_input_pending ())
2524 read_input_waiting ();
2530 /* Once a second, till the timer expires, check all the flagged read
2531 * descriptors to see if any input is available. If there is some then
2532 * set the corresponding bit in the return copy of rfds.
2536 register int to_check
, fd
;
2540 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2542 if (FD_ISSET (fd
, &orfds
))
2544 int avail
= 0, status
= 0;
2547 avail
= detect_input_pending (); /* Special keyboard handler */
2551 status
= ioctl (fd
, FIONREAD
, &avail
);
2552 #else /* no FIONREAD */
2553 /* Hoping it will return -1 if nothing available
2554 or 0 if all 0 chars requested are read. */
2555 if (proc_buffered_char
[fd
] >= 0)
2559 avail
= read (fd
, &buf
, 1);
2561 proc_buffered_char
[fd
] = buf
;
2563 #endif /* no FIONREAD */
2565 if (status
>= 0 && avail
> 0)
2573 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2576 turn_on_atimers (0);
2577 signal (SIGALRM
, select_alarm
);
2579 alarm (SELECT_PAUSE
);
2581 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2582 while (select_alarmed
== 0 && *local_timeout
!= 0
2583 && process_tick
== update_tick
)
2585 /* If we are interested in terminal input,
2586 wait by reading the terminal.
2587 That makes instant wakeup for terminal input at least. */
2588 if (FD_ISSET (0, &orfds
))
2590 read_input_waiting ();
2591 if (detect_input_pending ())
2597 (*local_timeout
) -= SELECT_PAUSE
;
2599 /* Reset the old alarm if there was one. */
2600 turn_on_atimers (1);
2602 if (*local_timeout
== 0) /* Stop on timer being cleared */
2607 #endif /* not WINDOWSNT */
2609 /* Read keyboard input into the standard buffer,
2610 waiting for at least one character. */
2612 /* Make all keyboard buffers much bigger when using a window system. */
2613 #ifdef HAVE_WINDOW_SYSTEM
2614 #define BUFFER_SIZE_FACTOR 16
2616 #define BUFFER_SIZE_FACTOR 1
2620 read_input_waiting ()
2622 struct input_event e
;
2624 extern int quit_char
;
2626 if (read_socket_hook
)
2628 struct input_event buf
[256];
2630 read_alarm_should_throw
= 0;
2631 if (! setjmp (read_alarm_throw
))
2632 nread
= (*read_socket_hook
) (0, buf
, 256, 1);
2636 /* Scan the chars for C-g and store them in kbd_buffer. */
2637 for (i
= 0; i
< nread
; i
++)
2639 kbd_buffer_store_event (&buf
[i
]);
2640 /* Don't look at input that follows a C-g too closely.
2641 This reduces lossage due to autorepeat on C-g. */
2642 if (buf
[i
].kind
== ascii_keystroke
2643 && buf
[i
].code
== quit_char
)
2650 nread
= read (fileno (stdin
), buf
, 1);
2652 /* Scan the chars for C-g and store them in kbd_buffer. */
2653 e
.kind
= ascii_keystroke
;
2654 e
.frame_or_window
= selected_frame
;
2656 for (i
= 0; i
< nread
; i
++)
2658 /* Convert chars > 0177 to meta events if desired.
2659 We do this under the same conditions that read_avail_input does. */
2660 if (read_socket_hook
== 0)
2662 /* If the user says she has a meta key, then believe her. */
2663 if (meta_key
== 1 && (buf
[i
] & 0x80))
2664 e
.modifiers
= meta_modifier
;
2669 XSETINT (e
.code
, buf
[i
]);
2670 kbd_buffer_store_event (&e
);
2671 /* Don't look at input that follows a C-g too closely.
2672 This reduces lossage due to autorepeat on C-g. */
2673 if (buf
[i
] == quit_char
)
2679 #endif /* not HAVE_SELECT */
2680 #endif /* not VMS */
2681 #endif /* not MSDOS */
2690 lmode
= LINTRUP
| lmode
;
2691 ioctl (fd
, TIOCLSET
, &lmode
);
2699 lmode
= ~LINTRUP
& lmode
;
2700 ioctl (0, TIOCLSET
, &lmode
);
2708 interrupts_deferred
= 0;
2716 interrupts_deferred
= 1;
2719 /* still inside #ifdef BSD4_1 */
2722 int sigheld
; /* Mask of held signals */
2728 sigheld
|= sigbit (signum
);
2736 sigheld
|= sigbit (signum
);
2743 sigheld
&= ~sigbit (signum
);
2748 sigfree () /* Free all held signals */
2751 for (i
= 0; i
< NSIG
; i
++)
2752 if (sigheld
& sigbit (i
))
2760 return 1 << (i
- 1);
2762 #endif /* subprocesses */
2765 /* POSIX signals support - DJB */
2766 /* Anyone with POSIX signals should have ANSI C declarations */
2768 #ifdef POSIX_SIGNALS
2770 sigset_t empty_mask
, full_mask
;
2773 sys_signal (int signal_number
, signal_handler_t action
)
2775 struct sigaction new_action
, old_action
;
2776 sigemptyset (&new_action
.sa_mask
);
2777 new_action
.sa_handler
= action
;
2779 /* Emacs mostly works better with restartable system services. If this
2780 * flag exists, we probably want to turn it on here.
2782 new_action
.sa_flags
= SA_RESTART
;
2784 new_action
.sa_flags
= 0;
2786 sigaction (signal_number
, &new_action
, &old_action
);
2787 return (old_action
.sa_handler
);
2791 /* If we're compiling with GCC, we don't need this function, since it
2792 can be written as a macro. */
2794 sys_sigmask (int sig
)
2797 sigemptyset (&mask
);
2798 sigaddset (&mask
, sig
);
2803 /* I'd like to have these guys return pointers to the mask storage in here,
2804 but there'd be trouble if the code was saving multiple masks. I'll be
2805 safe and pass the structure. It normally won't be more than 2 bytes
2809 sys_sigblock (sigset_t new_mask
)
2812 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2817 sys_sigunblock (sigset_t new_mask
)
2820 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2825 sys_sigsetmask (sigset_t new_mask
)
2828 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2832 #endif /* POSIX_SIGNALS */
2834 #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED
2835 static char *my_sys_siglist
[NSIG
];
2839 # define sys_siglist my_sys_siglist
2845 #ifdef POSIX_SIGNALS
2846 sigemptyset (&empty_mask
);
2847 sigfillset (&full_mask
);
2850 #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED
2854 sys_siglist
[SIGABRT
] = "Aborted";
2857 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2860 sys_siglist
[SIGALRM
] = "Alarm clock";
2863 sys_siglist
[SIGBUS
] = "Bus error";
2866 sys_siglist
[SIGCLD
] = "Child status changed";
2869 sys_siglist
[SIGCHLD
] = "Child status changed";
2872 sys_siglist
[SIGCONT
] = "Continued";
2875 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2878 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2881 sys_siglist
[SIGEMT
] = "Emulation trap";
2884 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2887 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2890 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2893 sys_siglist
[SIGHUP
] = "Hangup";
2896 sys_siglist
[SIGILL
] = "Illegal instruction";
2899 sys_siglist
[SIGINT
] = "Interrupt";
2902 sys_siglist
[SIGIO
] = "I/O possible";
2905 sys_siglist
[SIGIOINT
] = "I/O intervention required";
2908 sys_siglist
[SIGIOT
] = "IOT trap";
2911 sys_siglist
[SIGKILL
] = "Killed";
2914 sys_siglist
[SIGLOST
] = "Resource lost";
2917 sys_siglist
[SIGLWP
] = "SIGLWP";
2920 sys_siglist
[SIGMSG
] = "Monitor mode data available";
2923 sys_siglist
[SIGWIND
] = "SIGPHONE";
2926 sys_siglist
[SIGPIPE
] = "Broken pipe";
2929 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
2932 sys_siglist
[SIGPROF
] = "Profiling timer expired";
2935 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
2938 sys_siglist
[SIGPWR
] = "Power-fail restart";
2941 sys_siglist
[SIGQUIT
] = "Quit";
2944 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
2947 sys_siglist
[SIGSAK
] = "Secure attention";
2950 sys_siglist
[SIGSEGV
] = "Segmentation violation";
2953 sys_siglist
[SIGSOUND
] = "Sound completed";
2956 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
2959 sys_siglist
[SIGSTP
] = "Stopped (user)";
2962 sys_siglist
[SIGSYS
] = "Bad argument to system call";
2965 sys_siglist
[SIGTERM
] = "Terminated";
2968 sys_siglist
[SIGTHAW
] = "SIGTHAW";
2971 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
2974 sys_siglist
[SIGTSTP
] = "Stopped (user)";
2977 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
2980 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
2983 sys_siglist
[SIGURG
] = "Urgent I/O condition";
2986 sys_siglist
[SIGUSR1
] = "User defined signal 1";
2989 sys_siglist
[SIGUSR2
] = "User defined signal 2";
2992 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
2995 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
2998 sys_siglist
[SIGWINCH
] = "Window size changed";
3001 sys_siglist
[SIGWIND
] = "SIGWIND";
3004 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3007 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3010 #endif /* !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED */
3019 /* Figure out how many bits the system's random number generator uses.
3020 `random' and `lrand48' are assumed to return 31 usable bits.
3021 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3022 so we'll shift it and treat it like the 15-bit USG `rand'. */
3026 # define RAND_BITS 31
3027 # else /* !HAVE_RANDOM */
3028 # ifdef HAVE_LRAND48
3029 # define RAND_BITS 31
3030 # define random lrand48
3031 # else /* !HAVE_LRAND48 */
3032 # define RAND_BITS 15
3033 # if RAND_MAX == 32767
3034 # define random rand
3035 # else /* RAND_MAX != 32767 */
3036 # if RAND_MAX == 2147483647
3037 # define random() (rand () >> 16)
3038 # else /* RAND_MAX != 2147483647 */
3040 # define random rand
3042 # define random() (rand () >> 16)
3044 # endif /* RAND_MAX != 2147483647 */
3045 # endif /* RAND_MAX != 32767 */
3046 # endif /* !HAVE_LRAND48 */
3047 # endif /* !HAVE_RANDOM */
3048 #endif /* !RAND_BITS */
3055 srandom ((unsigned int)arg
);
3057 # ifdef HAVE_LRAND48
3060 srand ((unsigned int)arg
);
3066 * Build a full Emacs-sized word out of whatever we've got.
3067 * This suffices even for a 64-bit architecture with a 15-bit rand.
3072 long val
= random ();
3073 #if VALBITS > RAND_BITS
3074 val
= (val
<< RAND_BITS
) ^ random ();
3075 #if VALBITS > 2*RAND_BITS
3076 val
= (val
<< RAND_BITS
) ^ random ();
3077 #if VALBITS > 3*RAND_BITS
3078 val
= (val
<< RAND_BITS
) ^ random ();
3079 #if VALBITS > 4*RAND_BITS
3080 val
= (val
<< RAND_BITS
) ^ random ();
3081 #endif /* need at least 5 */
3082 #endif /* need at least 4 */
3083 #endif /* need at least 3 */
3084 #endif /* need at least 2 */
3085 return val
& ((1L << VALBITS
) - 1);
3088 #ifdef WRONG_NAME_INSQUE
3101 /* If any place else asks for the TERM variable,
3102 allow it to be overridden with the EMACS_TERM variable
3103 before attempting to translate the logical name TERM. As a last
3104 resort, ask for VAX C's special idea of the TERM variable. */
3111 static char buf
[256];
3112 static struct dsc$descriptor_s equiv
3113 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3114 static struct dsc$descriptor_s d_name
3115 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3118 if (!strcmp (name
, "TERM"))
3120 val
= (char *) getenv ("EMACS_TERM");
3125 d_name
.dsc$w_length
= strlen (name
);
3126 d_name
.dsc$a_pointer
= name
;
3127 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3129 char *str
= (char *) xmalloc (eqlen
+ 1);
3130 bcopy (buf
, str
, eqlen
);
3132 /* This is a storage leak, but a pain to fix. With luck,
3133 no one will ever notice. */
3136 return (char *) getenv (name
);
3141 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3142 to force a call on the debugger from within the image. */
3147 LIB$
SIGNAL (SS$_DEBUG
);
3153 #ifdef LINK_CRTL_SHARE
3154 #ifdef SHARABLE_LIB_BUG
3155 /* Variables declared noshare and initialized in sharable libraries
3156 cannot be shared. The VMS linker incorrectly forces you to use a private
3157 version which is uninitialized... If not for this "feature", we
3158 could use the C library definition of sys_nerr and sys_errlist. */
3160 char *sys_errlist
[] =
3164 "no such file or directory",
3166 "interrupted system call",
3168 "no such device or address",
3169 "argument list too long",
3170 "exec format error",
3173 "no more processes",
3174 "not enough memory",
3175 "permission denied",
3177 "block device required",
3178 "mount devices busy",
3180 "cross-device link",
3185 "file table overflow",
3186 "too many open files",
3190 "no space left on device",
3192 "read-only file system",
3198 "vax/vms specific error code nontranslatable error"
3200 #endif /* SHARABLE_LIB_BUG */
3201 #endif /* LINK_CRTL_SHARE */
3204 #ifndef HAVE_STRERROR
3210 extern char *sys_errlist
[];
3211 extern int sys_nerr
;
3213 if (errnum
>= 0 && errnum
< sys_nerr
)
3214 return sys_errlist
[errnum
];
3215 return (char *) "Unknown error";
3217 #endif /* not WINDOWSNT */
3218 #endif /* ! HAVE_STRERROR */
3221 emacs_open (path
, oflag
, mode
)
3225 register int rtnval
;
3228 if (oflag
& O_CREAT
)
3229 return creat (path
, mode
);
3232 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3233 && (errno
== EINTR
));
3242 register int rtnval
;
3244 while ((rtnval
= close (fd
)) == -1
3245 && (errno
== EINTR
))
3248 /* If close is interrupted SunOS 4.1 may or may not have closed the
3249 file descriptor. If it did the second close will fail with
3250 errno = EBADF. That means we have succeeded. */
3251 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3258 emacs_read (fildes
, buf
, nbyte
)
3263 register int rtnval
;
3265 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3266 && (errno
== EINTR
));
3271 emacs_write (fildes
, buf
, nbyte
)
3276 register int rtnval
, bytes_written
;
3282 rtnval
= write (fildes
, buf
, nbyte
);
3289 return (bytes_written
? bytes_written
: -1);
3294 bytes_written
+= rtnval
;
3296 return (bytes_written
);
3301 * All of the following are for USG.
3303 * On USG systems the system calls are INTERRUPTIBLE by signals
3304 * that the user program has elected to catch. Thus the system call
3305 * must be retried in these cases. To handle this without massive
3306 * changes in the source code, we remap the standard system call names
3307 * to names for our own functions in sysdep.c that do the system call
3308 * with retries. Actually, for portability reasons, it is good
3309 * programming practice, as this example shows, to limit all actual
3310 * system calls to a single occurrence in the source. Sure, this
3311 * adds an extra level of function call overhead but it is almost
3312 * always negligible. Fred Fish, Unisoft Systems Inc.
3316 * Warning, this function may not duplicate 4.2 action properly
3317 * under error conditions.
3321 /* In 4.1, param.h fails to define this. */
3322 #define MAXPATHLEN 1024
3331 char *npath
, *spath
;
3332 extern char *getcwd ();
3334 BLOCK_INPUT
; /* getcwd uses malloc */
3335 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3338 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3339 up to first slash. Should be harmless on other systems. */
3340 while (*npath
&& *npath
!= '/')
3342 strcpy (pathname
, npath
);
3343 free (spath
); /* getcwd uses malloc */
3348 #endif /* HAVE_GETWD */
3351 * Emulate rename using unlink/link. Note that this is
3352 * only partially correct. Also, doesn't enforce restriction
3353 * that files be of same type (regular->regular, dir->dir, etc).
3362 if (access (from
, 0) == 0)
3365 if (link (from
, to
) == 0)
3366 if (unlink (from
) == 0)
3378 /* HPUX curses library references perror, but as far as we know
3379 it won't be called. Anyway this definition will do for now. */
3385 #endif /* not HAVE_PERROR */
3391 * Emulate BSD dup2. First close newd if it already exists.
3392 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3393 * until we are, then close the unsuccessful ones.
3400 register int fd
, ret
;
3405 return fcntl (oldd
, F_DUPFD
, newd
);
3412 ret
= dup2 (old
,new);
3418 #endif /* not HAVE_DUP2 */
3421 * Gettimeofday. Simulate as much as possible. Only accurate
3422 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3423 * Only needed when subprocesses are defined.
3428 #ifndef HAVE_GETTIMEOFDAY
3433 gettimeofday (tp
, tzp
)
3435 struct timezone
*tzp
;
3437 extern long time ();
3439 tp
->tv_sec
= time ((long *)0);
3442 tzp
->tz_minuteswest
= -1;
3449 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3452 * This function will go away as soon as all the stubs fixed. (fnf)
3459 printf ("%s not yet implemented\r\n", badfunc
);
3466 /* Directory routines for systems that don't have them. */
3468 #ifdef SYSV_SYSTEM_DIR
3472 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3476 register DIR *dirp
; /* stream from opendir */
3480 rtnval
= emacs_close (dirp
->dd_fd
);
3482 /* Some systems (like Solaris) allocate the buffer and the DIR all
3483 in one block. Why in the world are we freeing this ourselves
3485 #if ! (defined (sun) && defined (USG5_4))
3486 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3488 xfree ((char *) dirp
);
3492 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3493 #endif /* SYSV_SYSTEM_DIR */
3495 #ifdef NONSYSTEM_DIR_LIBRARY
3499 char *filename
; /* name of directory */
3501 register DIR *dirp
; /* -> malloc'ed storage */
3502 register int fd
; /* file descriptor for read */
3503 struct stat sbuf
; /* result of fstat */
3505 fd
= emacs_open (filename
, O_RDONLY
, 0);
3510 if (fstat (fd
, &sbuf
) < 0
3511 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3512 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3516 return 0; /* bad luck today */
3521 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3528 register DIR *dirp
; /* stream from opendir */
3530 emacs_close (dirp
->dd_fd
);
3531 xfree ((char *) dirp
);
3539 ino_t od_ino
; /* inode */
3540 char od_name
[DIRSIZ
]; /* filename */
3542 #endif /* not VMS */
3544 struct direct dir_static
; /* simulated directory contents */
3549 register DIR *dirp
; /* stream from opendir */
3552 register struct olddir
*dp
; /* -> directory data */
3554 register struct dir$_name
*dp
; /* -> directory data */
3555 register struct dir$_version
*dv
; /* -> version data */
3560 if (dirp
->dd_loc
>= dirp
->dd_size
)
3561 dirp
->dd_loc
= dirp
->dd_size
= 0;
3563 if (dirp
->dd_size
== 0 /* refill buffer */
3564 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3568 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3569 dirp
->dd_loc
+= sizeof (struct olddir
);
3571 if (dp
->od_ino
!= 0) /* not deleted entry */
3573 dir_static
.d_ino
= dp
->od_ino
;
3574 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3575 dir_static
.d_name
[DIRSIZ
] = '\0';
3576 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3577 dir_static
.d_reclen
= sizeof (struct direct
)
3579 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3580 return &dir_static
; /* -> simulated structure */
3583 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3584 if (dirp
->dd_loc
== 0)
3585 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3586 : dp
->dir$b_namecount
;
3587 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3588 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3589 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3590 dir_static
.d_reclen
= sizeof (struct direct
)
3592 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3593 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3594 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3595 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3602 /* readdirver is just like readdir except it returns all versions of a file
3603 as separate entries. */
3608 register DIR *dirp
; /* stream from opendir */
3610 register struct dir$_name
*dp
; /* -> directory data */
3611 register struct dir$_version
*dv
; /* -> version data */
3613 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3614 dirp
->dd_loc
= dirp
->dd_size
= 0;
3616 if (dirp
->dd_size
== 0 /* refill buffer */
3617 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3620 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3621 if (dirp
->dd_loc
== 0)
3622 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3623 : dp
->dir$b_namecount
;
3624 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3625 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3626 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3627 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3628 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3629 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3630 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3631 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3637 #endif /* NONSYSTEM_DIR_LIBRARY */
3641 set_file_times (filename
, atime
, mtime
)
3643 EMACS_TIME atime
, mtime
;
3646 struct timeval tv
[2];
3649 return utimes (filename
, tv
);
3650 #else /* not HAVE_UTIMES */
3652 utb
.actime
= EMACS_SECS (atime
);
3653 utb
.modtime
= EMACS_SECS (mtime
);
3654 return utime (filename
, &utb
);
3655 #endif /* not HAVE_UTIMES */
3658 /* mkdir and rmdir functions, for systems which don't have them. */
3662 * Written by Robert Rother, Mariah Corporation, August 1985.
3664 * If you want it, it's yours. All I ask in return is that if you
3665 * figure out how to do this in a Bourne Shell script you send me
3667 * sdcsvax!rmr or rmr@uscd
3669 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3670 * subroutine. 11Mar86; hoptoad!gnu
3672 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3673 * subroutine didn't return EEXIST. It does now.
3679 #ifdef MKDIR_PROTOTYPE
3683 mkdir (dpath
, dmode
)
3688 int cpid
, status
, fd
;
3689 struct stat statbuf
;
3691 if (stat (dpath
, &statbuf
) == 0)
3693 errno
= EEXIST
; /* Stat worked, so it already exists */
3697 /* If stat fails for a reason other than non-existence, return error */
3698 if (errno
!= ENOENT
)
3701 synch_process_alive
= 1;
3702 switch (cpid
= fork ())
3705 case -1: /* Error in fork */
3706 return (-1); /* Errno is set already */
3708 case 0: /* Child process */
3710 * Cheap hack to set mode of new directory. Since this
3711 * child process is going away anyway, we zap its umask.
3712 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3713 * directory. Does anybody care?
3715 status
= umask (0); /* Get current umask */
3716 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3717 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3724 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3725 _exit (-1); /* Can't exec /bin/mkdir */
3727 default: /* Parent process */
3728 wait_for_termination (cpid
);
3731 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3733 errno
= EIO
; /* We don't know why, but */
3734 return -1; /* /bin/mkdir failed */
3739 #endif /* not HAVE_MKDIR */
3746 int cpid
, status
, fd
;
3747 struct stat statbuf
;
3749 if (stat (dpath
, &statbuf
) != 0)
3751 /* Stat just set errno. We don't have to */
3755 synch_process_alive
= 1;
3756 switch (cpid
= fork ())
3759 case -1: /* Error in fork */
3760 return (-1); /* Errno is set already */
3762 case 0: /* Child process */
3763 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3770 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3771 _exit (-1); /* Can't exec /bin/rmdir */
3773 default: /* Parent process */
3774 wait_for_termination (cpid
);
3777 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3779 errno
= EIO
; /* We don't know why, but */
3780 return -1; /* /bin/rmdir failed */
3785 #endif /* !HAVE_RMDIR */
3789 /* Functions for VMS */
3791 #include "vms-pwd.h"
3796 /* Return as a string the VMS error string pertaining to STATUS.
3797 Reuses the same static buffer each time it is called. */
3801 int status
; /* VMS status code */
3805 static char buf
[257];
3807 bufadr
[0] = sizeof buf
- 1;
3808 bufadr
[1] = (int) buf
;
3809 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3810 return "untranslatable VMS error status";
3818 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3819 * not work correctly. (It also doesn't work well in version 2.3.)
3824 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3825 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3829 unsigned short s_buflen
;
3830 unsigned short s_code
;
3832 unsigned short *s_retlenadr
;
3836 #define buflen s.s_buflen
3837 #define code s.s_code
3838 #define bufadr s.s_bufadr
3839 #define retlenadr s.s_retlenadr
3841 #define R_OK 4 /* test for read permission */
3842 #define W_OK 2 /* test for write permission */
3843 #define X_OK 1 /* test for execute (search) permission */
3844 #define F_OK 0 /* test for presence of file */
3847 sys_access (path
, mode
)
3851 static char *user
= NULL
;
3854 /* translate possible directory spec into .DIR file name, so brain-dead
3855 * access can treat the directory like a file. */
3856 if (directory_file_name (path
, dir_fn
))
3860 return access (path
, mode
);
3861 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3867 unsigned short int dummy
;
3869 static int constant
= ACL$C_FILE
;
3870 DESCRIPTOR (path_desc
, path
);
3871 DESCRIPTOR (user_desc
, user
);
3875 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3878 acces
|= CHP$M_READ
;
3880 acces
|= CHP$M_WRITE
;
3881 itemlst
[0].buflen
= sizeof (int);
3882 itemlst
[0].code
= CHP$_FLAGS
;
3883 itemlst
[0].bufadr
= (char *) &flags
;
3884 itemlst
[0].retlenadr
= &dummy
;
3885 itemlst
[1].buflen
= sizeof (int);
3886 itemlst
[1].code
= CHP$_ACCESS
;
3887 itemlst
[1].bufadr
= (char *) &acces
;
3888 itemlst
[1].retlenadr
= &dummy
;
3889 itemlst
[2].end
= CHP$_END
;
3890 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3891 return stat
== SS$_NORMAL
? 0 : -1;
3895 #else /* not VMS4_4 */
3898 #define ACE$M_WRITE 2
3899 #define ACE$C_KEYID 1
3901 static unsigned short memid
, grpid
;
3902 static unsigned int uic
;
3904 /* Called from init_sys_modes, so it happens not very often
3905 but at least each time Emacs is loaded. */
3907 sys_access_reinit ()
3913 sys_access (filename
, type
)
3919 int status
, size
, i
, typecode
, acl_controlled
;
3920 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3921 union prvdef prvmask
;
3923 /* Get UIC and GRP values for protection checking. */
3926 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3929 memid
= uic
& 0xFFFF;
3933 if (type
!= 2) /* not checking write access */
3934 return access (filename
, type
);
3936 /* Check write protection. */
3938 #define CHECKPRIV(bit) (prvmask.bit)
3939 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3941 /* Find privilege bits */
3942 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3944 error ("Unable to find privileges: %s", vmserrstr (status
));
3945 if (CHECKPRIV (PRV$V_BYPASS
))
3946 return 0; /* BYPASS enabled */
3948 fab
.fab$b_fac
= FAB$M_GET
;
3949 fab
.fab$l_fna
= filename
;
3950 fab
.fab$b_fns
= strlen (filename
);
3951 fab
.fab$l_xab
= &xab
;
3952 xab
= cc$rms_xabpro
;
3953 xab
.xab$l_aclbuf
= aclbuf
;
3954 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3955 status
= SYS$
OPEN (&fab
, 0, 0);
3958 SYS$
CLOSE (&fab
, 0, 0);
3959 /* Check system access */
3960 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3962 /* Check ACL entries, if any */
3964 if (xab
.xab$w_acllen
> 0)
3967 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3968 while (*aclptr
&& aclptr
< aclend
)
3970 size
= (*aclptr
& 0xff) / 4;
3971 typecode
= (*aclptr
>> 8) & 0xff;
3972 if (typecode
== ACE$C_KEYID
)
3973 for (i
= size
- 1; i
> 1; i
--)
3974 if (aclptr
[i
] == uic
)
3977 if (aclptr
[1] & ACE$M_WRITE
)
3978 return 0; /* Write access through ACL */
3980 aclptr
= &aclptr
[size
];
3982 if (acl_controlled
) /* ACL specified, prohibits write access */
3985 /* No ACL entries specified, check normal protection */
3986 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3988 if (WRITABLE (XAB$V_GRP
) &&
3989 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3990 return 0; /* Group writable */
3991 if (WRITABLE (XAB$V_OWN
) &&
3992 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3993 return 0; /* Owner writable */
3995 return -1; /* Not writable */
3997 #endif /* not VMS4_4 */
4000 static char vtbuf
[NAM$C_MAXRSS
+1];
4002 /* translate a vms file spec to a unix path */
4004 sys_translate_vms (vfile
)
4015 /* leading device or logical name is a root directory */
4016 if (p
= strchr (vfile
, ':'))
4025 if (*p
== '[' || *p
== '<')
4027 while (*++vfile
!= *p
+ 2)
4031 if (vfile
[-1] == *p
)
4054 static char utbuf
[NAM$C_MAXRSS
+1];
4056 /* translate a unix path to a VMS file spec */
4058 sys_translate_unix (ufile
)
4081 if (index (&ufile
[1], '/'))
4088 if (index (&ufile
[1], '/'))
4095 if (strncmp (ufile
, "./", 2) == 0)
4102 ufile
++; /* skip the dot */
4103 if (index (&ufile
[1], '/'))
4108 else if (strncmp (ufile
, "../", 3) == 0)
4116 ufile
+= 2; /* skip the dots */
4117 if (index (&ufile
[1], '/'))
4142 extern char *getcwd ();
4144 #define MAXPATHLEN 1024
4146 ptr
= xmalloc (MAXPATHLEN
);
4147 val
= getcwd (ptr
, MAXPATHLEN
);
4153 strcpy (pathname
, ptr
);
4162 long item_code
= JPI$_OWNER
;
4163 unsigned long parent_id
;
4166 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4169 vaxc$errno
= status
;
4179 return (getgid () << 16) | getuid ();
4184 sys_read (fildes
, buf
, nbyte
)
4189 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4194 sys_write (fildes
, buf
, nbyte
)
4199 register int nwrote
, rtnval
= 0;
4201 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4207 return rtnval
? rtnval
: -1;
4208 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4209 return rtnval
? rtnval
: -1;
4210 return (rtnval
+ nwrote
);
4215 * VAX/VMS VAX C RTL really loses. It insists that records
4216 * end with a newline (carriage return) character, and if they
4217 * don't it adds one (nice of it isn't it!)
4219 * Thus we do this stupidity below.
4224 sys_write (fildes
, buf
, nbytes
)
4227 unsigned int nbytes
;
4234 fstat (fildes
, &st
);
4240 /* Handle fixed-length files with carriage control. */
4241 if (st
.st_fab_rfm
== FAB$C_FIX
4242 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4244 len
= st
.st_fab_mrs
;
4245 retval
= write (fildes
, p
, min (len
, nbytes
));
4248 retval
++; /* This skips the implied carriage control */
4252 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4253 while (*e
!= '\n' && e
> p
) e
--;
4254 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4255 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4257 retval
= write (fildes
, p
, len
);
4268 /* Create file NEW copying its attributes from file OLD. If
4269 OLD is 0 or does not exist, create based on the value of
4272 /* Protection value the file should ultimately have.
4273 Set by create_copy_attrs, and use by rename_sansversions. */
4274 static unsigned short int fab_final_pro
;
4277 creat_copy_attrs (old
, new)
4280 struct FAB fab
= cc$rms_fab
;
4281 struct XABPRO xabpro
;
4282 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4283 extern int vms_stmlf_recfm
;
4287 fab
.fab$b_fac
= FAB$M_GET
;
4288 fab
.fab$l_fna
= old
;
4289 fab
.fab$b_fns
= strlen (old
);
4290 fab
.fab$l_xab
= (char *) &xabpro
;
4291 xabpro
= cc$rms_xabpro
;
4292 xabpro
.xab$l_aclbuf
= aclbuf
;
4293 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4294 /* Call $OPEN to fill in the fab & xabpro fields. */
4295 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4297 SYS$
CLOSE (&fab
, 0, 0);
4298 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4299 if (xabpro
.xab$w_acllen
> 0)
4301 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4302 /* If the acl buffer was too short, redo open with longer one.
4303 Wouldn't need to do this if there were some system imposed
4304 limit on the size of an ACL, but I can't find any such. */
4306 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4307 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4308 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4309 SYS$
CLOSE (&fab
, 0, 0);
4315 xabpro
.xab$l_aclbuf
= 0;
4320 fab
.fab$l_fna
= new;
4321 fab
.fab$b_fns
= strlen (new);
4325 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4326 fab
.fab$b_rat
= FAB$M_CR
;
4329 /* Set the file protections such that we will be able to manipulate
4330 this file. Once we are done writing and renaming it, we will set
4331 the protections back. */
4333 fab_final_pro
= xabpro
.xab$w_pro
;
4335 SYS$
SETDFPROT (0, &fab_final_pro
);
4336 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4338 /* Create the new file with either default attrs or attrs copied
4340 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4342 SYS$
CLOSE (&fab
, 0, 0);
4343 /* As this is a "replacement" for creat, return a file descriptor
4344 opened for writing. */
4345 return open (new, O_WRONLY
);
4350 #include <varargs.h>
4353 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4358 sys_creat (va_alist
)
4361 va_list list_incrementer
;
4364 int rfd
; /* related file descriptor */
4365 int fd
; /* Our new file descriptor */
4372 extern int vms_stmlf_recfm
;
4375 va_start (list_incrementer
);
4376 name
= va_arg (list_incrementer
, char *);
4377 mode
= va_arg (list_incrementer
, int);
4379 rfd
= va_arg (list_incrementer
, int);
4380 va_end (list_incrementer
);
4383 /* Use information from the related file descriptor to set record
4384 format of the newly created file. */
4385 fstat (rfd
, &st_buf
);
4386 switch (st_buf
.st_fab_rfm
)
4389 strcpy (rfm
, "rfm = fix");
4390 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4391 strcpy (rat
, "rat = ");
4392 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4394 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4395 strcat (rat
, "ftn");
4396 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4397 strcat (rat
, "prn");
4398 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4399 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4400 strcat (rat
, ", blk");
4402 strcat (rat
, "blk");
4403 return creat (name
, 0, rfm
, rat
, mrs
);
4406 strcpy (rfm
, "rfm = vfc");
4407 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4408 strcpy (rat
, "rat = ");
4409 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4411 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4412 strcat (rat
, "ftn");
4413 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4414 strcat (rat
, "prn");
4415 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4416 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4417 strcat (rat
, ", blk");
4419 strcat (rat
, "blk");
4420 return creat (name
, 0, rfm
, rat
, fsz
);
4423 strcpy (rfm
, "rfm = stm");
4427 strcpy (rfm
, "rfm = stmcr");
4431 strcpy (rfm
, "rfm = stmlf");
4435 strcpy (rfm
, "rfm = udf");
4439 strcpy (rfm
, "rfm = var");
4442 strcpy (rat
, "rat = ");
4443 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4445 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4446 strcat (rat
, "ftn");
4447 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4448 strcat (rat
, "prn");
4449 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4450 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4451 strcat (rat
, ", blk");
4453 strcat (rat
, "blk");
4457 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4458 strcpy (rat
, "rat=cr");
4460 /* Until the VAX C RTL fixes the many bugs with modes, always use
4461 mode 0 to get the user's default protection. */
4462 fd
= creat (name
, 0, rfm
, rat
);
4463 if (fd
< 0 && errno
== EEXIST
)
4465 if (unlink (name
) < 0)
4466 report_file_error ("delete", build_string (name
));
4467 fd
= creat (name
, 0, rfm
, rat
);
4473 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4475 sys_fwrite (ptr
, size
, num
, fp
)
4476 register char * ptr
;
4479 register int tot
= num
* size
;
4487 * The VMS C library routine creat actually creates a new version of an
4488 * existing file rather than truncating the old version. There are times
4489 * when this is not the desired behavior, for instance, when writing an
4490 * auto save file (you only want one version), or when you don't have
4491 * write permission in the directory containing the file (but the file
4492 * itself is writable). Hence this routine, which is equivalent to
4493 * "close (creat (fn, 0));" on Unix if fn already exists.
4499 struct FAB xfab
= cc$rms_fab
;
4500 struct RAB xrab
= cc$rms_rab
;
4503 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4504 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4505 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4506 xfab
.fab$l_fna
= fn
;
4507 xfab
.fab$b_fns
= strlen (fn
);
4508 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4510 xrab
.rab$l_fab
= &xfab
;
4512 /* This gibberish opens the file, positions to the first record, and
4513 deletes all records from there until the end of file. */
4514 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4516 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4517 (SYS$
FIND (&xrab
) & 01) == 01 &&
4518 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4529 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4530 SYSPRV or a readable SYSUAF.DAT. */
4536 * Routine to read the VMS User Authorization File and return
4537 * a specific user's record.
4540 static struct UAF retuaf
;
4543 get_uaf_name (uname
)
4550 uaf_fab
= cc$rms_fab
;
4551 uaf_rab
= cc$rms_rab
;
4552 /* initialize fab fields */
4553 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4554 uaf_fab
.fab$b_fns
= 21;
4555 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4556 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4557 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4558 /* initialize rab fields */
4559 uaf_rab
.rab$l_fab
= &uaf_fab
;
4560 /* open the User Authorization File */
4561 status
= SYS$
OPEN (&uaf_fab
);
4565 vaxc$errno
= status
;
4568 status
= SYS$
CONNECT (&uaf_rab
);
4572 vaxc$errno
= status
;
4575 /* read the requested record - index is in uname */
4576 uaf_rab
.rab$l_kbf
= uname
;
4577 uaf_rab
.rab$b_ksz
= strlen (uname
);
4578 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4579 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4580 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4581 status
= SYS$
GET (&uaf_rab
);
4585 vaxc$errno
= status
;
4588 /* close the User Authorization File */
4589 status
= SYS$
DISCONNECT (&uaf_rab
);
4593 vaxc$errno
= status
;
4596 status
= SYS$
CLOSE (&uaf_fab
);
4600 vaxc$errno
= status
;
4614 uaf_fab
= cc$rms_fab
;
4615 uaf_rab
= cc$rms_rab
;
4616 /* initialize fab fields */
4617 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4618 uaf_fab
.fab$b_fns
= 21;
4619 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4620 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4621 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4622 /* initialize rab fields */
4623 uaf_rab
.rab$l_fab
= &uaf_fab
;
4624 /* open the User Authorization File */
4625 status
= SYS$
OPEN (&uaf_fab
);
4629 vaxc$errno
= status
;
4632 status
= SYS$
CONNECT (&uaf_rab
);
4636 vaxc$errno
= status
;
4639 /* read the requested record - index is in uic */
4640 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4641 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4642 uaf_rab
.rab$b_ksz
= sizeof uic
;
4643 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4644 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4645 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4646 status
= SYS$
GET (&uaf_rab
);
4650 vaxc$errno
= status
;
4653 /* close the User Authorization File */
4654 status
= SYS$
DISCONNECT (&uaf_rab
);
4658 vaxc$errno
= status
;
4661 status
= SYS$
CLOSE (&uaf_fab
);
4665 vaxc$errno
= status
;
4671 static struct passwd retpw
;
4679 /* copy these out first because if the username is 32 chars, the next
4680 section will overwrite the first byte of the UIC */
4681 retpw
.pw_uid
= up
->uaf$w_mem
;
4682 retpw
.pw_gid
= up
->uaf$w_grp
;
4684 /* I suppose this is not the best style, to possibly overwrite one
4685 byte beyond the end of the field, but what the heck... */
4686 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4687 while (ptr
[-1] == ' ')
4690 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4692 /* the rest of these are counted ascii strings */
4693 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4694 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4695 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4696 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4697 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4698 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4699 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4700 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4704 #else /* not READ_SYSUAF */
4705 static struct passwd retpw
;
4706 #endif /* not READ_SYSUAF */
4717 unsigned char * full
;
4718 #endif /* READ_SYSUAF */
4723 if ('a' <= *ptr
&& *ptr
<= 'z')
4728 if (!(up
= get_uaf_name (name
)))
4730 return cnv_uaf_pw (up
);
4732 if (strcmp (name
, getenv ("USER")) == 0)
4734 retpw
.pw_uid
= getuid ();
4735 retpw
.pw_gid
= getgid ();
4736 strcpy (retpw
.pw_name
, name
);
4737 if (full
= egetenv ("FULLNAME"))
4738 strcpy (retpw
.pw_gecos
, full
);
4740 *retpw
.pw_gecos
= '\0';
4741 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4742 *retpw
.pw_shell
= '\0';
4747 #endif /* not READ_SYSUAF */
4757 if (!(up
= get_uaf_uic (uid
)))
4759 return cnv_uaf_pw (up
);
4761 if (uid
== sys_getuid ())
4762 return getpwnam (egetenv ("USER"));
4765 #endif /* not READ_SYSUAF */
4768 /* return total address space available to the current process. This is
4769 the sum of the current p0 size, p1 size and free page table entries
4775 unsigned long free_pages
;
4776 unsigned long frep0va
;
4777 unsigned long frep1va
;
4780 item_code
= JPI$_FREPTECNT
;
4781 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4784 vaxc$errno
= status
;
4789 item_code
= JPI$_FREP0VA
;
4790 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4793 vaxc$errno
= status
;
4796 item_code
= JPI$_FREP1VA
;
4797 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4800 vaxc$errno
= status
;
4804 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4808 define_logical_name (varname
, string
)
4812 struct dsc$descriptor_s strdsc
=
4813 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4814 struct dsc$descriptor_s envdsc
=
4815 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4816 struct dsc$descriptor_s lnmdsc
=
4817 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4819 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4823 delete_logical_name (varname
)
4826 struct dsc$descriptor_s envdsc
=
4827 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4828 struct dsc$descriptor_s lnmdsc
=
4829 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4831 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4849 error ("execvp system call not implemented");
4858 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4859 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4860 char from_esn
[NAM$C_MAXRSS
];
4861 char to_esn
[NAM$C_MAXRSS
];
4863 from_fab
.fab$l_fna
= from
;
4864 from_fab
.fab$b_fns
= strlen (from
);
4865 from_fab
.fab$l_nam
= &from_nam
;
4866 from_fab
.fab$l_fop
= FAB$M_NAM
;
4868 from_nam
.nam$l_esa
= from_esn
;
4869 from_nam
.nam$b_ess
= sizeof from_esn
;
4871 to_fab
.fab$l_fna
= to
;
4872 to_fab
.fab$b_fns
= strlen (to
);
4873 to_fab
.fab$l_nam
= &to_nam
;
4874 to_fab
.fab$l_fop
= FAB$M_NAM
;
4876 to_nam
.nam$l_esa
= to_esn
;
4877 to_nam
.nam$b_ess
= sizeof to_esn
;
4879 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4885 if (status
== RMS$_DEV
)
4889 vaxc$errno
= status
;
4894 /* This function renames a file like `rename', but it strips
4895 the version number from the "to" filename, such that the "to" file is
4896 will always be a new version. It also sets the file protection once it is
4897 finished. The protection that we will use is stored in fab_final_pro,
4898 and was set when we did a creat_copy_attrs to create the file that we
4901 We could use the chmod function, but Eunichs uses 3 bits per user category
4902 to describe the protection, and VMS uses 4 (write and delete are separate
4903 bits). To maintain portability, the VMS implementation of `chmod' wires
4904 the W and D bits together. */
4907 static struct fibdef fib
; /* We need this initialized to zero */
4908 char vms_file_written
[NAM$C_MAXRSS
];
4911 rename_sans_version (from
,to
)
4918 struct FAB to_fab
= cc$rms_fab
;
4919 struct NAM to_nam
= cc$rms_nam
;
4920 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4921 struct dsc$descriptor fib_attr
[2]
4922 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4923 char to_esn
[NAM$C_MAXRSS
];
4925 $
DESCRIPTOR (disk
,to_esn
);
4927 to_fab
.fab$l_fna
= to
;
4928 to_fab
.fab$b_fns
= strlen (to
);
4929 to_fab
.fab$l_nam
= &to_nam
;
4930 to_fab
.fab$l_fop
= FAB$M_NAM
;
4932 to_nam
.nam$l_esa
= to_esn
;
4933 to_nam
.nam$b_ess
= sizeof to_esn
;
4935 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4937 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4938 *(to_nam
.nam$l_ver
) = '\0';
4940 stat
= rename (from
, to_esn
);
4944 strcpy (vms_file_written
, to_esn
);
4946 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4947 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4949 /* Now set the file protection to the correct value */
4950 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4952 /* Copy these fields into the fib */
4953 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4954 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4955 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4957 SYS$
CLOSE (&to_fab
, 0, 0);
4959 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4962 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4963 0, 0, 0, &fib_attr
, 0);
4966 stat
= SYS$
DASSGN (chan
);
4969 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4980 unsigned short fid
[3];
4981 char esa
[NAM$C_MAXRSS
];
4984 fab
.fab$l_fop
= FAB$M_OFP
;
4985 fab
.fab$l_fna
= file
;
4986 fab
.fab$b_fns
= strlen (file
);
4987 fab
.fab$l_nam
= &nam
;
4990 nam
.nam$l_esa
= esa
;
4991 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4993 status
= SYS$
PARSE (&fab
);
4994 if ((status
& 1) == 0)
4997 vaxc$errno
= status
;
5000 status
= SYS$
SEARCH (&fab
);
5001 if ((status
& 1) == 0)
5004 vaxc$errno
= status
;
5008 fid
[0] = nam
.nam$w_fid
[0];
5009 fid
[1] = nam
.nam$w_fid
[1];
5010 fid
[2] = nam
.nam$w_fid
[2];
5012 fab
.fab$l_fna
= new;
5013 fab
.fab$b_fns
= strlen (new);
5015 status
= SYS$
PARSE (&fab
);
5016 if ((status
& 1) == 0)
5019 vaxc$errno
= status
;
5023 nam
.nam$w_fid
[0] = fid
[0];
5024 nam
.nam$w_fid
[1] = fid
[1];
5025 nam
.nam$w_fid
[2] = fid
[2];
5027 nam
.nam$l_esa
= nam
.nam$l_name
;
5028 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5030 status
= SYS$
ENTER (&fab
);
5031 if ((status
& 1) == 0)
5034 vaxc$errno
= status
;
5045 printf ("%s not yet implemented\r\n", badfunc
);
5053 /* Arrange to return a range centered on zero. */
5054 return rand () - (1 << 30);
5066 /* Called from init_sys_modes. */
5072 /* If we're not on an HFT we shouldn't do any of this. We determine
5073 if we are on an HFT by trying to get an HFT error code. If this
5074 call fails, we're not on an HFT. */
5076 if (ioctl (0, HFQERROR
, &junk
) < 0)
5078 #else /* not IBMR2AIX */
5079 if (ioctl (0, HFQEIO
, 0) < 0)
5081 #endif /* not IBMR2AIX */
5083 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5084 as the rubout key's ASCII code. Here this is changed. The bug is that
5085 there's no way to determine the old mapping, so in reset_sys_modes
5086 we need to assume that the normal map had been present. Of course, this
5087 code also doesn't help if on a terminal emulator which doesn't understand
5091 struct hfkeymap keymap
;
5093 buf
.hf_bufp
= (char *)&keymap
;
5094 buf
.hf_buflen
= sizeof (keymap
);
5095 keymap
.hf_nkeys
= 2;
5096 keymap
.hfkey
[0].hf_kpos
= 15;
5097 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5099 keymap
.hfkey
[0].hf_keyidh
= '<';
5100 #else /* not IBMR2AIX */
5101 keymap
.hfkey
[0].hf_page
= '<';
5102 #endif /* not IBMR2AIX */
5103 keymap
.hfkey
[0].hf_char
= 127;
5104 keymap
.hfkey
[1].hf_kpos
= 15;
5105 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5107 keymap
.hfkey
[1].hf_keyidh
= '<';
5108 #else /* not IBMR2AIX */
5109 keymap
.hfkey
[1].hf_page
= '<';
5110 #endif /* not IBMR2AIX */
5111 keymap
.hfkey
[1].hf_char
= 127;
5112 hftctl (0, HFSKBD
, &buf
);
5114 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
5116 line_ins_del_ok
= char_ins_del_ok
= 0;
5119 /* Reset the rubout key to backspace. */
5125 struct hfkeymap keymap
;
5129 if (ioctl (0, HFQERROR
, &junk
) < 0)
5131 #else /* not IBMR2AIX */
5132 if (ioctl (0, HFQEIO
, 0) < 0)
5134 #endif /* not IBMR2AIX */
5136 buf
.hf_bufp
= (char *)&keymap
;
5137 buf
.hf_buflen
= sizeof (keymap
);
5138 keymap
.hf_nkeys
= 2;
5139 keymap
.hfkey
[0].hf_kpos
= 15;
5140 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5142 keymap
.hfkey
[0].hf_keyidh
= '<';
5143 #else /* not IBMR2AIX */
5144 keymap
.hfkey
[0].hf_page
= '<';
5145 #endif /* not IBMR2AIX */
5146 keymap
.hfkey
[0].hf_char
= 8;
5147 keymap
.hfkey
[1].hf_kpos
= 15;
5148 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5150 keymap
.hfkey
[1].hf_keyidh
= '<';
5151 #else /* not IBMR2AIX */
5152 keymap
.hfkey
[1].hf_page
= '<';
5153 #endif /* not IBMR2AIX */
5154 keymap
.hfkey
[1].hf_char
= 8;
5155 hftctl (0, HFSKBD
, &buf
);
5162 /* These are included on Sunos 4.1 when we do not use shared libraries.
5163 X11 libraries may refer to these functions but (we hope) do not
5164 actually call them. */
5184 #endif /* USE_DL_STUBS */
5193 register int length
;
5197 long max_str
= 65535;
5199 while (length
> max_str
) {
5200 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5205 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5207 while (length
-- > 0)
5209 #endif /* not VMS */
5212 #endif /* no bzero */
5213 #endif /* BSTRING */
5215 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5218 /* Saying `void' requires a declaration, above, where bcopy is used
5219 and that declaration causes pain for systems where bcopy is a macro. */
5220 bcopy (b1
, b2
, length
)
5223 register int length
;
5226 long max_str
= 65535;
5228 while (length
> max_str
) {
5229 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5235 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5237 while (length
-- > 0)
5239 #endif /* not VMS */
5241 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5246 bcmp (b1
, b2
, length
) /* This could be a macro! */
5249 register int length
;
5252 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5253 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5255 return STR$
COMPARE (&src1
, &src2
);
5257 while (length
-- > 0)
5262 #endif /* not VMS */
5264 #endif /* no bcmp */
5265 #endif /* not BSTRING */
5267 #ifndef HAVE_STRSIGNAL
5274 if (0 <= code
&& code
< NSIG
)
5277 signame
= sys_errlist
[code
];
5279 /* Cast to suppress warning if the table has const char *. */
5280 signame
= (char *) sys_siglist
[code
];
5286 #endif /* HAVE_STRSIGNAL */