1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86,87,88,93,94,95, 1999, 2000, 2001
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. */
32 /* Including stdlib.h isn't necessarily enough to get srandom
33 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
35 #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets
36 random prototyped as returning `int'. It looks to me as
37 though the best way to DTRT is to prefer the rand48 functions
38 (per libc.info). -- fx */
39 extern long int random
P_ ((void));
41 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
42 some systems, and an unsigned long on others, like FreeBSD
44 extern void srandom
P_ ((unsigned int));
48 #include "blockinput.h"
52 /* It is essential to include stdlib.h so that this file picks up
53 the correct definitions of rand, srand, and RAND_MAX.
54 Otherwise random numbers will not work correctly. */
58 /* Nonzero means delete a process right away if it exits (process.c). */
59 static int delete_exited_processes
;
65 #define write sys_write
70 #endif /* not WINDOWSNT */
72 /* Does anyone other than VMS need this? */
74 #define sys_fwrite fwrite
80 #include <sys/types.h>
84 /* Get _POSIX_VDISABLE, if it is available. */
94 #if !defined (USG) || defined (BSD_PGRPS)
96 #define setpgrp setpgid
100 /* Get SI_SRPC_DOMAIN, if it is available. */
101 #ifdef HAVE_SYS_SYSTEMINFO_H
102 #include <sys/systeminfo.h>
105 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
109 #include <sys/param.h>
113 extern unsigned start
__asm__ ("start");
135 #include <sys/file.h>
143 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
147 #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG)
148 because the vms compiler doesn't grok `defined' */
156 #endif /* not 4.1 bsd */
159 #include <sys/ioctl.h>
165 #ifdef BROKEN_TIOCGWINSZ
170 #if defined (USG) || defined (DGUX)
171 #include <sys/utsname.h>
172 #ifndef MEMORY_IN_STRING_H
175 #if defined (TIOCGWINSZ) || defined (ISC4_0)
177 #include <sys/sioctl.h>
180 #include <sys/stream.h>
181 #include <sys/ptem.h>
183 #endif /* TIOCGWINSZ or ISC4_0 */
184 #endif /* USG or DGUX */
186 extern int quit_char
;
188 #include "keyboard.h"
191 #include "termhooks.h"
192 #include "termchar.h"
193 #include "termopts.h"
194 #include "dispextern.h"
199 /* In process.h which conflicts with the local copy. */
201 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
202 int _CRTAPI1
_getpid (void);
205 #ifdef NONSYSTEM_DIR_LIBRARY
207 #endif /* NONSYSTEM_DIR_LIBRARY */
209 #include "syssignal.h"
216 #ifndef HAVE_STRUCT_UTIMBUF
217 /* We want to use utime rather than utimes, but we couldn't find the
218 structure declaration. We'll use the traditional one. */
226 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
232 #define LNOFLSH 0100000
235 static int baud_convert
[] =
240 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
241 1800, 2400, 4800, 9600, 19200, 38400
248 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
250 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
258 /* The file descriptor for Emacs's input terminal.
259 Under Unix, this is normally zero except when using X;
260 under VMS, we place the input channel number here. */
263 void croak
P_ ((char *));
270 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
272 SIGMASKTYPE sigprocmask_set
;
275 /* Specify a different file descriptor for further input operations. */
284 /* Discard pending input on descriptor input_fd. */
290 struct emacs_tty buf
;
295 /* Discarding input is not safe when the input could contain
296 replies from the X server. So don't do it. */
297 if (read_socket_hook
)
302 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
303 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
309 ioctl (input_fd
, TIOCFLUSH
, &zero
);
311 #else /* not Apollo */
312 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
313 while (dos_keyread () != -1)
315 #else /* not MSDOS */
316 EMACS_GET_TTY (input_fd
, &buf
);
317 EMACS_SET_TTY (input_fd
, &buf
, 0);
318 #endif /* not MSDOS */
319 #endif /* not Apollo */
321 #endif /* not WINDOWSNT */
326 /* Arrange for character C to be read as the next input from
333 if (read_socket_hook
)
336 /* Should perhaps error if in batch mode */
338 ioctl (input_fd
, TIOCSTI
, &c
);
339 #else /* no TIOCSTI */
340 error ("Cannot stuff terminal input characters in this version of Unix");
341 #endif /* no TIOCSTI */
353 #ifdef INIT_BAUD_RATE
358 #else /* not DOS_NT */
362 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
363 &sg
.class, 12, 0, 0, 0, 0 );
364 emacs_ospeed
= sg
.xmit_baud
;
370 tcgetattr (input_fd
, &sg
);
371 emacs_ospeed
= cfgetospeed (&sg
);
372 #if defined (USE_GETOBAUD) && defined (getobaud)
373 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
374 if (emacs_ospeed
== 0)
375 emacs_ospeed
= getobaud (sg
.c_cflag
);
377 #else /* neither VMS nor TERMIOS */
383 tcgetattr (input_fd
, &sg
);
385 ioctl (input_fd
, TCGETA
, &sg
);
387 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
388 #else /* neither VMS nor TERMIOS nor TERMIO */
391 sg
.sg_ospeed
= B9600
;
392 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
394 emacs_ospeed
= sg
.sg_ospeed
;
395 #endif /* not HAVE_TERMIO */
396 #endif /* not HAVE_TERMIOS */
398 #endif /* not DOS_NT */
399 #endif /* not INIT_BAUD_RATE */
402 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
403 ? baud_convert
[emacs_ospeed
] : 9600);
410 set_exclusive_use (fd
)
414 ioctl (fd
, FIOCLEX
, 0);
416 /* Ok to do nothing if this feature does not exist */
421 wait_without_blocking ()
424 wait3 (0, WNOHANG
| WUNTRACED
, 0);
426 croak ("wait_without_blocking");
428 synch_process_alive
= 0;
431 #endif /* not subprocesses */
433 int wait_debugging
; /* Set nonzero to make following function work under dbx
434 (at least for bsd). */
437 wait_for_termination_signal ()
440 /* Wait for subprocess with process id `pid' to terminate and
441 make sure it will get eliminated (not remain forever as a zombie) */
444 wait_for_termination (pid
)
453 status
= SYS$
FORCEX (&pid
, 0, 0);
456 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
457 /* Note that kill returns -1 even if the process is just a zombie now.
458 But inevitably a SIGCHLD interrupt should be generated
459 and child_sig will do wait3 and make the process go away. */
460 /* There is some indication that there is a bug involved with
461 termination of subprocesses, perhaps involving a kernel bug too,
462 but no idea what it is. Just as a hunch we signal SIGCHLD to see
463 if that causes the problem to go away or get worse. */
464 sigsetmask (sigmask (SIGCHLD
));
465 if (0 > kill (pid
, 0))
467 sigsetmask (SIGEMPTYMASK
);
468 kill (getpid (), SIGCHLD
);
474 sigpause (SIGEMPTYMASK
);
475 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
476 #if defined (UNIPLUS)
477 if (0 > kill (pid
, 0))
480 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
481 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
482 sigblock (sigmask (SIGCHLD
));
484 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
486 sigunblock (sigmask (SIGCHLD
));
490 sigsuspend (&empty_mask
);
491 #else /* not POSIX_SIGNALS */
492 #ifdef HAVE_SYSV_SIGPAUSE
494 if (0 > kill (pid
, 0))
500 #else /* not HAVE_SYSV_SIGPAUSE */
504 #else /* not WINDOWSNT */
505 if (0 > kill (pid
, 0))
507 /* Using sleep instead of pause avoids timing error.
508 If the inferior dies just before the sleep,
509 we lose just one second. */
511 #endif /* not WINDOWSNT */
512 #endif /* not HAVE_SYSV_SIGPAUSE */
513 #endif /* not POSIX_SIGNALS */
514 #endif /* not UNIPLUS */
515 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
517 #else /* not subprocesses */
520 #else /* not __DJGPP__ > 1 */
522 if (kill (pid
, 0) < 0)
528 if (status
== pid
|| status
== -1)
531 #endif /* not __DJGPP__ > 1*/
532 #endif /* not subprocesses */
539 * flush any pending output
540 * (may flush input as well; it does not matter the way we use it)
544 flush_pending_output (channel
)
548 /* If we try this, we get hit with SIGTTIN, because
549 the child's tty belongs to the child's pgrp. */
552 ioctl (channel
, TCFLSH
, 1);
556 /* 3rd arg should be ignored
557 but some 4.2 kernels actually want the address of an int
558 and nonzero means something different. */
559 ioctl (channel
, TIOCFLUSH
, &zero
);
566 /* Set up the terminal at the other end of a pseudo-terminal that
567 we will be controlling an inferior through.
568 It should not echo or do line-editing, since that is done
569 in Emacs. No padding needed for insertion into an Emacs buffer. */
572 child_setup_tty (out
)
578 EMACS_GET_TTY (out
, &s
);
580 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
581 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
582 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
584 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
585 /* No output delays */
587 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
588 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
589 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
590 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
591 #ifdef INLCR /* Just being cautious, since I can't check how
592 widespread INLCR is--rms. */
593 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
597 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
600 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
603 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
605 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
606 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
608 /* Said to be unnecessary: */
609 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
610 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
613 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
614 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
615 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
616 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
619 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
623 /* AIX enhanced edit loses NULs, so disable it */
626 s
.main
.c_iflag
&= ~ASCEDIT
;
628 /* Also, PTY overloads NUL and BREAK.
629 don't ignore break, but don't signal either, so it looks like NUL. */
630 s
.main
.c_iflag
&= ~IGNBRK
;
631 s
.main
.c_iflag
&= ~BRKINT
;
632 /* QUIT and INTR work better as signals, so disable character forms */
633 s
.main
.c_cc
[VINTR
] = 0377;
634 #ifdef SIGNALS_VIA_CHARACTERS
635 /* the QUIT and INTR character are used in process_send_signal
636 so set them here to something useful. */
637 if (s
.main
.c_cc
[VQUIT
] == 0377)
638 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
639 if (s
.main
.c_cc
[VINTR
] == 0377)
640 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
641 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
642 /* QUIT and INTR work better as signals, so disable character forms */
643 s
.main
.c_cc
[VQUIT
] = 0377;
644 s
.main
.c_cc
[VINTR
] = 0377;
645 s
.main
.c_lflag
&= ~ISIG
;
646 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
647 s
.main
.c_cc
[VEOL
] = 0377;
648 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
651 #else /* not HAVE_TERMIO */
653 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
655 s
.main
.sg_flags
|= LPASS8
;
656 s
.main
.sg_erase
= 0377;
657 s
.main
.sg_kill
= 0377;
658 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
660 #endif /* not HAVE_TERMIO */
662 EMACS_SET_TTY (out
, &s
, 0);
671 ioctl (out
, FIOASYNC
, &zero
);
674 #endif /* not DOS_NT */
678 #endif /* subprocesses */
680 /* Record a signal code and the handler for it. */
684 SIGTYPE (*handler
) P_ ((int));
687 static void save_signal_handlers
P_ ((struct save_signal
*));
688 static void restore_signal_handlers
P_ ((struct save_signal
*));
690 /* Suspend the Emacs process; give terminal to its superior. */
696 /* "Foster" parentage allows emacs to return to a subprocess that attached
697 to the current emacs as a cheaper than starting a whole new process. This
698 is set up by KEPTEDITOR.COM. */
699 unsigned long parent_id
, foster_parent_id
;
702 fpid_string
= getenv ("EMACS_PARENT_PID");
703 if (fpid_string
!= NULL
)
705 sscanf (fpid_string
, "%x", &foster_parent_id
);
706 if (foster_parent_id
!= 0)
707 parent_id
= foster_parent_id
;
709 parent_id
= getppid ();
712 parent_id
= getppid ();
714 xfree (fpid_string
); /* On VMS, this was malloc'd */
716 if (parent_id
&& parent_id
!= 0xffffffff)
718 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
719 int status
= LIB$
ATTACH (&parent_id
) & 1;
720 signal (SIGINT
, oldsig
);
729 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
730 d_prompt
.a
= "Emacs: "; /* Just a reminder */
731 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
736 #if defined (SIGTSTP) && !defined (MSDOS)
739 int pgrp
= EMACS_GETPGRP (0);
740 EMACS_KILLPG (pgrp
, SIGTSTP
);
743 #else /* No SIGTSTP */
744 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
745 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
746 kill (getpid (), SIGQUIT
);
748 #else /* No SIGTSTP or USG_JOBCTRL */
750 /* On a system where suspending is not implemented,
751 instead fork a subshell and let it talk directly to the terminal
755 #endif /* no USG_JOBCTRL */
756 #endif /* no SIGTSTP */
760 /* Fork a subshell. */
767 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
769 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
772 struct save_signal saved_handlers
[5];
774 unsigned char *str
= 0;
777 saved_handlers
[0].code
= SIGINT
;
778 saved_handlers
[1].code
= SIGQUIT
;
779 saved_handlers
[2].code
= SIGTERM
;
781 saved_handlers
[3].code
= SIGIO
;
782 saved_handlers
[4].code
= 0;
784 saved_handlers
[3].code
= 0;
787 /* Mentioning current_buffer->buffer would mean including buffer.h,
788 which somehow wedges the hp compiler. So instead... */
790 dir
= intern ("default-directory");
791 if (NILP (Fboundp (dir
)))
793 dir
= Fsymbol_value (dir
);
797 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
798 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
800 bcopy (SDATA (dir
), str
, len
);
801 if (str
[len
- 1] != '/') str
[len
++] = '/';
808 save_signal_handlers (saved_handlers
);
809 synch_process_alive
= 1;
810 #endif /* __DJGPP__ > 1 */
814 error ("Can't spawn subshell");
821 #ifdef DOS_NT /* MW, Aug 1993 */
824 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
827 sh
= (char *) egetenv ("SHELL");
831 /* Use our buffer's default directory for the subshell. */
833 chdir ((char *) str
);
836 close_process_descs (); /* Close Emacs's pipes/ptys */
839 #ifdef SET_EMACS_PRIORITY
841 extern EMACS_INT emacs_priority
;
843 if (emacs_priority
< 0)
844 nice (-emacs_priority
);
848 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
850 char *epwd
= getenv ("PWD");
851 char old_pwd
[MAXPATHLEN
+1+4];
853 /* If PWD is set, pass it with corrected value. */
856 strcpy (old_pwd
, epwd
);
857 if (str
[len
- 1] == '/')
859 setenv ("PWD", str
, 1);
864 putenv (old_pwd
); /* restore previous value */
866 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
868 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
870 #else /* not MSDOS */
872 /* Waits for process completion */
873 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
876 write (1, "Can't execute subshell", 22);
877 #else /* not WINDOWSNT */
879 write (1, "Can't execute subshell", 22);
881 #endif /* not WINDOWSNT */
882 #endif /* not MSDOS */
885 /* Do this now if we did not do it before. */
886 #if !defined (MSDOS) || __DJGPP__ == 1
887 save_signal_handlers (saved_handlers
);
888 synch_process_alive
= 1;
892 wait_for_termination (pid
);
894 restore_signal_handlers (saved_handlers
);
895 synch_process_alive
= 0;
898 #endif /* !MAC_OS8 */
901 save_signal_handlers (saved_handlers
)
902 struct save_signal
*saved_handlers
;
904 while (saved_handlers
->code
)
906 saved_handlers
->handler
907 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
913 restore_signal_handlers (saved_handlers
)
914 struct save_signal
*saved_handlers
;
916 while (saved_handlers
->code
)
918 signal (saved_handlers
->code
, saved_handlers
->handler
);
932 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
933 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
935 interrupts_deferred
= 0;
944 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
949 if (read_socket_hook
)
953 sigunblock (sigmask (SIGWINCH
));
955 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
957 interrupts_deferred
= 0;
963 if (read_socket_hook
)
967 sigblock (sigmask (SIGWINCH
));
969 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
970 interrupts_deferred
= 1;
973 #else /* no FASYNC */
974 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
981 if (read_socket_hook
)
984 ioctl (input_fd
, FIOASYNC
, &on
);
985 interrupts_deferred
= 0;
993 if (read_socket_hook
)
996 ioctl (input_fd
, FIOASYNC
, &off
);
997 interrupts_deferred
= 1;
1000 #else /* not FASYNC, not STRIDE */
1004 #include <termios.h>
1012 if (read_socket_hook
)
1016 sigaddset (&st
, SIGIO
);
1017 ioctl (input_fd
, FIOASYNC
, &on
);
1018 interrupts_deferred
= 0;
1019 sigprocmask (SIG_UNBLOCK
, &st
, (sigset_t
*)0);
1027 if (read_socket_hook
)
1030 ioctl (input_fd
, FIOASYNC
, &off
);
1031 interrupts_deferred
= 1;
1034 #else /* ! _CX_UX */
1039 if (read_socket_hook
)
1042 croak ("request_sigio");
1048 if (read_socket_hook
)
1051 croak ("unrequest_sigio");
1057 #endif /* F_SETFL */
1059 /* Saving and restoring the process group of Emacs's terminal. */
1063 /* The process group of which Emacs was a member when it initially
1066 If Emacs was in its own process group (i.e. inherited_pgroup ==
1067 getpid ()), then we know we're running under a shell with job
1068 control (Emacs would never be run as part of a pipeline).
1071 If Emacs was not in its own process group, then we know we're
1072 running under a shell (or a caller) that doesn't know how to
1073 separate itself from Emacs (like sh). Emacs must be in its own
1074 process group in order to receive SIGIO correctly. In this
1075 situation, we put ourselves in our own pgroup, forcibly set the
1076 tty's pgroup to our pgroup, and make sure to restore and reinstate
1077 the tty's pgroup just like any other terminal setting. If
1078 inherited_group was not the tty's pgroup, then we'll get a
1079 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1080 it goes foreground in the future, which is what should happen. */
1081 int inherited_pgroup
;
1083 /* Split off the foreground process group to Emacs alone.
1084 When we are in the foreground, but not started in our own process
1085 group, redirect the TTY to point to our own process group. We need
1086 to be in our own process group to receive SIGIO properly. */
1088 narrow_foreground_group ()
1092 setpgrp (0, inherited_pgroup
);
1093 if (inherited_pgroup
!= me
)
1094 EMACS_SET_TTY_PGRP (input_fd
, &me
);
1098 /* Set the tty to our original foreground group. */
1100 widen_foreground_group ()
1102 if (inherited_pgroup
!= getpid ())
1103 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
1104 setpgrp (0, inherited_pgroup
);
1107 #endif /* BSD_PGRPS */
1109 /* Getting and setting emacs_tty structures. */
1111 /* Set *TC to the parameters associated with the terminal FD.
1112 Return zero if all's well, or -1 if we ran into an error we
1113 couldn't deal with. */
1115 emacs_get_tty (fd
, settings
)
1117 struct emacs_tty
*settings
;
1119 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1121 /* We have those nifty POSIX tcmumbleattr functions. */
1122 bzero (&settings
->main
, sizeof (settings
->main
));
1123 if (tcgetattr (fd
, &settings
->main
) < 0)
1128 /* The SYSV-style interface? */
1129 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1134 /* Vehemently Monstrous System? :-) */
1135 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1136 &settings
->main
.class, 12, 0, 0, 0, 0)
1142 /* I give up - I hope you have the BSD ioctls. */
1143 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1145 #endif /* not DOS_NT */
1150 /* Suivant - Do we have to get struct ltchars data? */
1152 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1156 /* How about a struct tchars and a wordful of lmode bits? */
1158 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1159 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1163 /* We have survived the tempest. */
1168 /* Set the parameters of the tty on FD according to the contents of
1169 *SETTINGS. If FLUSHP is non-zero, we discard input.
1170 Return 0 if all went well, and -1 if anything failed. */
1173 emacs_set_tty (fd
, settings
, flushp
)
1175 struct emacs_tty
*settings
;
1178 /* Set the primary parameters - baud rate, character size, etcetera. */
1181 /* We have those nifty POSIX tcmumbleattr functions.
1182 William J. Smith <wjs@wiis.wang.com> writes:
1183 "POSIX 1003.1 defines tcsetattr to return success if it was
1184 able to perform any of the requested actions, even if some
1185 of the requested actions could not be performed.
1186 We must read settings back to ensure tty setup properly.
1187 AIX requires this to keep tty from hanging occasionally." */
1188 /* This make sure that we don't loop indefinitely in here. */
1189 for (i
= 0 ; i
< 10 ; i
++)
1190 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1201 bzero (&new, sizeof (new));
1202 /* Get the current settings, and see if they're what we asked for. */
1203 tcgetattr (fd
, &new);
1204 /* We cannot use memcmp on the whole structure here because under
1205 * aix386 the termios structure has some reserved field that may
1208 if ( new.c_iflag
== settings
->main
.c_iflag
1209 && new.c_oflag
== settings
->main
.c_oflag
1210 && new.c_cflag
== settings
->main
.c_cflag
1211 && new.c_lflag
== settings
->main
.c_lflag
1212 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1220 /* The SYSV-style interface? */
1221 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1226 /* Vehemently Monstrous System? :-) */
1227 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1228 &settings
->main
.class, 12, 0, 0, 0, 0)
1234 /* I give up - I hope you have the BSD ioctls. */
1235 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1237 #endif /* not DOS_NT */
1243 /* Suivant - Do we have to get struct ltchars data? */
1245 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1249 /* How about a struct tchars and a wordful of lmode bits? */
1251 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1252 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1256 /* We have survived the tempest. */
1261 /* The initial tty mode bits */
1262 struct emacs_tty old_tty
;
1264 /* 1 if we have been through init_sys_modes. */
1267 /* 1 if outer tty status has been recorded. */
1271 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1276 #ifndef F_SETOWN_BUG
1278 int old_fcntl_owner
;
1279 #endif /* F_SETOWN */
1280 #endif /* F_SETOWN_BUG */
1282 /* This may also be defined in stdio,
1283 but if so, this does no harm,
1284 and using the same name avoids wasting the other one's space. */
1287 extern char *_sobuf
;
1289 #if defined (USG) || defined (DGUX)
1290 unsigned char _sobuf
[BUFSIZ
+8];
1292 char _sobuf
[BUFSIZ
];
1297 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1300 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1306 struct emacs_tty tty
;
1309 /* cus-start.el complains if delete-exited-processes is not defined */
1310 #ifndef subprocesses
1311 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
1312 doc
: /* *Non-nil means delete processes immediately when they exit.
1313 nil means don't delete them until `list-processes' is run. */);
1314 delete_exited_processes
= 0;
1316 #endif /* MAC_OS8 */
1320 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1321 extern int (*interrupt_signal
) ();
1325 Vtty_erase_char
= Qnil
;
1332 input_ef
= get_kbd_event_flag ();
1333 /* LIB$GET_EF (&input_ef); */
1334 SYS$
CLREF (input_ef
);
1335 waiting_for_ast
= 0;
1337 timer_ef
= get_timer_event_flag ();
1338 /* LIB$GET_EF (&timer_ef); */
1339 SYS$
CLREF (timer_ef
);
1343 LIB$
GET_EF (&process_ef
);
1344 SYS$
CLREF (process_ef
);
1346 if (input_ef
/ 32 != process_ef
/ 32)
1347 croak ("Input and process event flags in different clusters.");
1349 if (input_ef
/ 32 != timer_ef
/ 32)
1350 croak ("Input and timer event flags in different clusters.");
1352 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1353 ((unsigned) 1 << (process_ef
% 32));
1355 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1356 ((unsigned) 1 << (timer_ef
% 32));
1358 sys_access_reinit ();
1360 #endif /* not VMS */
1363 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1364 narrow_foreground_group ();
1367 #ifdef HAVE_WINDOW_SYSTEM
1368 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1369 needs the initialization code below. */
1370 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1373 EMACS_GET_TTY (input_fd
, &old_tty
);
1379 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1380 XSETINT (Vtty_erase_char
, old_tty
.main
.c_cc
[VERASE
]);
1383 /* This allows meta to be sent on 8th bit. */
1384 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1386 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1387 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1388 #ifdef INLCR /* I'm just being cautious,
1389 since I can't check how widespread INLCR is--rms. */
1390 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1393 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1395 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1396 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1398 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1400 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1403 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1405 tty
.main
.c_iflag
&= ~IXANY
;
1409 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1410 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1412 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1416 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1417 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1420 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1421 /* Set up C-g for both SIGQUIT and SIGINT.
1422 We don't know which we will get, but we handle both alike
1423 so which one it really gives us does not matter. */
1424 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1425 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1426 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1428 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1432 #if defined (mips) || defined (HAVE_TCATTR)
1434 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1437 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1438 #endif /* V_DSUSP */
1439 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1440 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1443 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1446 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1447 #endif /* VREPRINT */
1449 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1450 #endif /* VWERASE */
1452 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1453 #endif /* VDISCARD */
1458 tty
.main
.c_cc
[VSTART
] = '\021';
1461 tty
.main
.c_cc
[VSTOP
] = '\023';
1467 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1470 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1473 #endif /* mips or HAVE_TCATTR */
1475 #ifdef SET_LINE_DISCIPLINE
1476 /* Need to explicitly request TERMIODISC line discipline or
1477 Ultrix's termios does not work correctly. */
1478 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1482 /* AIX enhanced edit loses NULs, so disable it. */
1483 tty
.main
.c_line
= 0;
1484 tty
.main
.c_iflag
&= ~ASCEDIT
;
1486 tty
.main
.c_cc
[VSTRT
] = 255;
1487 tty
.main
.c_cc
[VSTOP
] = 255;
1488 tty
.main
.c_cc
[VSUSP
] = 255;
1489 tty
.main
.c_cc
[VDSUSP
] = 255;
1490 #endif /* IBMR2AIX */
1494 tty
.main
.c_cc
[VSTART
] = '\021';
1497 tty
.main
.c_cc
[VSTOP
] = '\023';
1500 /* Also, PTY overloads NUL and BREAK.
1501 don't ignore break, but don't signal either, so it looks like NUL.
1502 This really serves a purpose only if running in an XTERM window
1503 or via TELNET or the like, but does no harm elsewhere. */
1504 tty
.main
.c_iflag
&= ~IGNBRK
;
1505 tty
.main
.c_iflag
&= ~BRKINT
;
1507 #else /* if not HAVE_TERMIO */
1509 tty
.main
.tt_char
|= TT$M_NOECHO
;
1511 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1513 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1515 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1516 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1517 #else /* not VMS (BSD, that is) */
1519 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1520 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1522 tty
.main
.sg_flags
|= ANYP
;
1523 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1524 #endif /* not DOS_NT */
1525 #endif /* not VMS (BSD, that is) */
1526 #endif /* not HAVE_TERMIO */
1528 /* If going to use CBREAK mode, we must request C-g to interrupt
1529 and turn off start and stop chars, etc. If not going to use
1530 CBREAK mode, do this anyway so as to turn off local flow
1531 control for user coming over network on 4.2; in this case,
1532 only t_stopc and t_startc really matter. */
1535 /* Note: if not using CBREAK mode, it makes no difference how we
1537 tty
.tchars
= new_tchars
;
1538 tty
.tchars
.t_intrc
= quit_char
;
1541 tty
.tchars
.t_startc
= '\021';
1542 tty
.tchars
.t_stopc
= '\023';
1545 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1547 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1548 anything, and leaving it in breaks the meta key. Go figure. */
1549 tty
.lmode
&= ~LLITOUT
;
1556 #endif /* HAVE_TCHARS */
1557 #endif /* not HAVE_TERMIO */
1560 tty
.ltchars
= new_ltchars
;
1561 #endif /* HAVE_LTCHARS */
1562 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1564 internal_terminal_init ();
1568 EMACS_SET_TTY (input_fd
, &tty
, 0);
1570 /* This code added to insure that, if flow-control is not to be used,
1571 we have an unlocked terminal at the start. */
1574 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1578 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1582 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1584 if (!flow_control
) tcflow (input_fd
, TCOON
);
1592 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1593 to be only LF. This is the way that is done. */
1596 if (ioctl (1, HFTGETID
, &tty
) != -1)
1597 write (1, "\033[20l", 5);
1603 /* Appears to do nothing when in PASTHRU mode.
1604 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1605 interrupt_signal, oob_chars, 0, 0, 0, 0);
1607 queue_kbd_input (0);
1612 #ifndef F_SETOWN_BUG
1613 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1615 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1617 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1618 fcntl (input_fd
, F_SETOWN
, getpid ());
1619 init_sigio (input_fd
);
1621 #endif /* F_GETOWN */
1622 #endif /* F_SETOWN_BUG */
1623 #endif /* F_SETFL */
1626 if (interrupt_input
)
1627 init_sigio (input_fd
);
1630 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1634 /* This symbol is defined on recent USG systems.
1635 Someone says without this call USG won't really buffer the file
1636 even with a call to setbuf. */
1637 setvbuf (stdout
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1639 setbuf (stdout
, (char *) _sobuf
);
1641 #ifdef HAVE_WINDOW_SYSTEM
1642 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1643 needs the initialization code below. */
1644 if (EQ (Vwindow_system
, Qnil
)
1646 /* When running in tty mode on NT/Win95, we have a read_socket
1647 hook, but still need the rest of the initialization code below. */
1648 && (! read_socket_hook
)
1652 set_terminal_modes ();
1655 && FRAMEP (Vterminal_frame
)
1656 && FRAME_TERMCAP_P (XFRAME (Vterminal_frame
)))
1657 init_frame_faces (XFRAME (Vterminal_frame
));
1659 if (term_initted
&& no_redraw_on_reenter
)
1661 if (display_completed
)
1662 direct_output_forward_char (0);
1667 if (FRAMEP (Vterminal_frame
))
1668 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1674 /* Return nonzero if safe to use tabs in output.
1675 At the time this is called, init_sys_modes has not been done yet. */
1680 struct emacs_tty tty
;
1682 EMACS_GET_TTY (input_fd
, &tty
);
1683 return EMACS_TTY_TABS_OK (&tty
);
1686 /* Get terminal size from system.
1687 Store number of lines into *HEIGHTP and width into *WIDTHP.
1688 We store 0 if there's no valid information. */
1691 get_frame_size (widthp
, heightp
)
1692 int *widthp
, *heightp
;
1698 struct winsize size
;
1700 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1701 *widthp
= *heightp
= 0;
1704 *widthp
= size
.ws_col
;
1705 *heightp
= size
.ws_row
;
1711 /* SunOS - style. */
1712 struct ttysize size
;
1714 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1715 *widthp
= *heightp
= 0;
1718 *widthp
= size
.ts_cols
;
1719 *heightp
= size
.ts_lines
;
1725 struct sensemode tty
;
1727 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1728 &tty
.class, 12, 0, 0, 0, 0);
1729 *widthp
= tty
.scr_wid
;
1730 *heightp
= tty
.scr_len
;
1734 *widthp
= ScreenCols ();
1735 *heightp
= ScreenRows ();
1736 #else /* system doesn't know size */
1741 #endif /* not VMS */
1742 #endif /* not SunOS-style */
1743 #endif /* not BSD-style */
1746 /* Set the logical window size associated with descriptor FD
1747 to HEIGHT and WIDTH. This is used mainly with ptys. */
1750 set_window_size (fd
, height
, width
)
1751 int fd
, height
, width
;
1756 struct winsize size
;
1757 size
.ws_row
= height
;
1758 size
.ws_col
= width
;
1760 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1761 return 0; /* error */
1768 /* SunOS - style. */
1769 struct ttysize size
;
1770 size
.ts_lines
= height
;
1771 size
.ts_cols
= width
;
1773 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1779 #endif /* not SunOS-style */
1780 #endif /* not BSD-style */
1784 /* Prepare the terminal for exiting Emacs; move the cursor to the
1785 bottom of the frame, turn off interrupt-driven I/O, etc. */
1798 #ifdef HAVE_WINDOW_SYSTEM
1799 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1800 needs the clean-up code below. */
1801 if (!EQ (Vwindow_system
, Qnil
)
1803 /* When running in tty mode on NT/Win95, we have a read_socket
1804 hook, but still need the rest of the clean-up code below. */
1810 sf
= SELECTED_FRAME ();
1811 cursor_to (FRAME_HEIGHT (sf
) - 1, 0);
1812 clear_end_of_line (FRAME_WIDTH (sf
));
1813 /* clear_end_of_line may move the cursor */
1814 cursor_to (FRAME_HEIGHT (sf
) - 1, 0);
1815 #if defined (IBMR2AIX) && defined (AIXHFT)
1817 /* HFT devices normally use ^J as a LF/CR. We forced it to
1818 do the LF only. Now, we need to reset it. */
1821 if (ioctl (1, HFTGETID
, &tty
) != -1)
1822 write (1, "\033[20h", 5);
1826 reset_terminal_modes ();
1830 /* Avoid possible loss of output when changing terminal modes. */
1831 fsync (fileno (stdout
));
1836 #ifndef F_SETOWN_BUG
1837 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1838 if (interrupt_input
)
1841 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1843 #endif /* F_SETOWN */
1844 #endif /* F_SETOWN_BUG */
1846 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1848 #endif /* F_SETFL */
1850 if (interrupt_input
)
1855 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1858 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1862 #ifdef SET_LINE_DISCIPLINE
1863 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1864 A different old line discipline is therefore not restored, yet.
1865 Restore the old line discipline by hand. */
1866 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1874 widen_foreground_group ();
1880 /* Set up the proper status flags for use of a pty. */
1886 /* I'm told that TOICREMOTE does not mean control chars
1887 "can't be sent" but rather that they don't have
1888 input-editing or signaling effects.
1889 That should be good, because we have other ways
1890 to do those things in Emacs.
1891 However, telnet mode seems not to work on 4.2.
1892 So TIOCREMOTE is turned off now. */
1894 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1895 will hang. In particular, the "timeout" feature (which
1896 causes a read to return if there is no data available)
1897 does this. Also it is known that telnet mode will hang
1898 in such a way that Emacs must be stopped (perhaps this
1899 is the same problem).
1901 If TIOCREMOTE is turned off, then there is a bug in
1902 hp-ux which sometimes loses data. Apparently the
1903 code which blocks the master process when the internal
1904 buffer fills up does not work. Other than this,
1905 though, everything else seems to work fine.
1907 Since the latter lossage is more benign, we may as well
1908 lose that way. -- cph */
1910 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1913 ioctl (fd
, FIONBIO
, &on
);
1918 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1919 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1920 /* cause EMACS not to die when it should, i.e., when its own controlling */
1921 /* tty goes away. I've complained to the AIX developers, and they may */
1922 /* change this behavior, but I'm not going to hold my breath. */
1923 signal (SIGHUP
, SIG_IGN
);
1926 #endif /* HAVE_PTYS */
1930 /* Assigning an input channel is done at the start of Emacs execution.
1931 This is called each time Emacs is resumed, also, but does nothing
1932 because input_chain is no longer zero. */
1941 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1947 /* Deassigning the input channel is done before exiting. */
1952 return SYS$
DASSGN (input_fd
);
1957 /* Request reading one character into the keyboard buffer.
1958 This is done as soon as the buffer becomes empty. */
1964 extern kbd_input_ast ();
1966 waiting_for_ast
= 0;
1968 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1969 &input_iosb
, kbd_input_ast
, 1,
1970 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1975 /* Ast routine that is called when keyboard input comes in
1976 in accord with the SYS$QIO above. */
1981 register int c
= -1;
1982 int old_errno
= errno
;
1983 extern EMACS_TIME
*input_available_clear_time
;
1985 if (waiting_for_ast
)
1986 SYS$
SETEF (input_ef
);
1987 waiting_for_ast
= 0;
1990 if (input_count
== 25)
1992 printf ("Ast # %d,", input_count
);
1993 printf (" iosb = %x, %x, %x, %x",
1994 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1997 if (input_iosb
.offset
)
2001 printf (", char = 0%o", c
);
2013 struct input_event e
;
2014 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2015 XSETINT (e
.code
, c
);
2016 e
.frame_or_window
= selected_frame
;
2017 kbd_buffer_store_event (&e
);
2019 if (input_available_clear_time
)
2020 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2024 /* Wait until there is something in kbd_buffer. */
2027 wait_for_kbd_input ()
2029 extern int have_process_input
, process_exited
;
2031 /* If already something, avoid doing system calls. */
2032 if (detect_input_pending ())
2036 /* Clear a flag, and tell ast routine above to set it. */
2037 SYS$
CLREF (input_ef
);
2038 waiting_for_ast
= 1;
2039 /* Check for timing error: ast happened while we were doing that. */
2040 if (!detect_input_pending ())
2042 /* No timing error: wait for flag to be set. */
2043 set_waiting_for_input (0);
2044 SYS$
WFLOR (input_ef
, input_eflist
);
2045 clear_waiting_for_input ();
2046 if (!detect_input_pending ())
2047 /* Check for subprocess input availability */
2049 int dsp
= have_process_input
|| process_exited
;
2051 SYS$
CLREF (process_ef
);
2052 if (have_process_input
)
2053 process_command_input ();
2058 update_mode_lines
++;
2059 prepare_menu_bars ();
2060 redisplay_preserve_echo_area (18);
2064 waiting_for_ast
= 0;
2067 /* Get rid of any pending QIO, when we are about to suspend
2068 or when we want to throw away pending input.
2069 We wait for a positive sign that the AST routine has run
2070 and therefore there is no I/O request queued when we return.
2071 SYS$SETAST is used to avoid a timing error. */
2077 printf ("At end_kbd_input.\n");
2081 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2083 SYS$
CANCEL (input_fd
);
2088 /* Clear a flag, and tell ast routine above to set it. */
2089 SYS$
CLREF (input_ef
);
2090 waiting_for_ast
= 1;
2092 SYS$
CANCEL (input_fd
);
2094 SYS$
WAITFR (input_ef
);
2095 waiting_for_ast
= 0;
2098 /* Wait for either input available or time interval expiry. */
2101 input_wait_timeout (timeval
)
2102 int timeval
; /* Time to wait, in seconds */
2105 static int zero
= 0;
2106 static int large
= -10000000;
2108 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2110 /* If already something, avoid doing system calls. */
2111 if (detect_input_pending ())
2115 /* Clear a flag, and tell ast routine above to set it. */
2116 SYS$
CLREF (input_ef
);
2117 waiting_for_ast
= 1;
2118 /* Check for timing error: ast happened while we were doing that. */
2119 if (!detect_input_pending ())
2121 /* No timing error: wait for flag to be set. */
2123 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2124 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2126 waiting_for_ast
= 0;
2129 /* The standard `sleep' routine works some other way
2130 and it stops working if you have ever quit out of it.
2131 This one continues to work. */
2137 static int zero
= 0;
2138 static int large
= -10000000;
2140 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2143 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2144 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2162 croak ("request sigio");
2168 croak ("unrequest sigio");
2173 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2178 #ifndef SYSTEM_MALLOC
2185 /* Some systems that cannot dump also cannot implement these. */
2188 * Return the address of the start of the text segment prior to
2189 * doing an unexec. After unexec the return value is undefined.
2190 * See crt0.c for further explanation and _start.
2194 #if !(defined (__NetBSD__) && defined (__ELF__))
2195 #ifndef HAVE_TEXT_START
2200 return ((char *) TEXT_START
);
2204 return ((char *) csrt
);
2205 #else /* not GOULD */
2206 extern int _start ();
2207 return ((char *) _start
);
2209 #endif /* TEXT_START */
2211 #endif /* not HAVE_TEXT_START */
2215 * Return the address of the start of the data segment prior to
2216 * doing an unexec. After unexec the return value is undefined.
2217 * See crt0.c for further information and definition of data_start.
2219 * Apparently, on BSD systems this is etext at startup. On
2220 * USG systems (swapping) this is highly mmu dependent and
2221 * is also dependent on whether or not the program is running
2222 * with shared text. Generally there is a (possibly large)
2223 * gap between end of text and start of data with shared text.
2225 * On Uniplus+ systems with shared text, data starts at a
2226 * fixed address. Each port (from a given oem) is generally
2227 * different, and the specific value of the start of data can
2228 * be obtained via the UniPlus+ specific "uvar" system call,
2229 * however the method outlined in crt0.c seems to be more portable.
2231 * Probably what will have to happen when a USG unexec is available,
2232 * at least on UniPlus, is temacs will have to be made unshared so
2233 * that text and data are contiguous. Then once loadup is complete,
2234 * unexec will produce a shared executable where the data can be
2235 * at the normal shared text boundary and the startofdata variable
2236 * will be patched by unexec to the correct value.
2244 return ((char *) DATA_START
);
2246 #ifdef ORDINARY_LINK
2248 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2249 * data_start isn't defined. We take the address of environ, which
2250 * is known to live at or near the start of the system crt0.c, and
2251 * we don't sweat the handful of bytes that might lose.
2253 extern char **environ
;
2255 return ((char *) &environ
);
2257 extern int data_start
;
2258 return ((char *) &data_start
);
2259 #endif /* ORDINARY_LINK */
2260 #endif /* DATA_START */
2262 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2265 /* Some systems that cannot dump also cannot implement these. */
2268 * Return the address of the end of the text segment prior to
2269 * doing an unexec. After unexec the return value is undefined.
2276 return ((char *) TEXT_END
);
2279 return ((char *) &etext
);
2284 * Return the address of the end of the data segment prior to
2285 * doing an unexec. After unexec the return value is undefined.
2292 return ((char *) DATA_END
);
2295 return ((char *) &edata
);
2299 #endif /* not CANNOT_DUMP */
2301 /* init_system_name sets up the string for the Lisp function
2302 system-name to return. */
2308 extern Lisp_Object Vsystem_name
;
2313 #include <sys/socket.h>
2315 #endif /* HAVE_SOCKETS */
2316 #endif /* not VMS */
2317 #endif /* not BSD4_1 */
2320 #ifndef HAVE_H_ERRNO
2323 #endif /* TRY_AGAIN */
2329 Vsystem_name
= build_string (sysname
);
2333 if ((sp
= egetenv ("SYS$NODE")) == 0)
2334 Vsystem_name
= build_string ("vax-vms");
2335 else if ((end
= index (sp
, ':')) == 0)
2336 Vsystem_name
= build_string (sp
);
2338 Vsystem_name
= make_string (sp
, end
- sp
);
2340 #ifndef HAVE_GETHOSTNAME
2343 Vsystem_name
= build_string (uts
.nodename
);
2344 #else /* HAVE_GETHOSTNAME */
2345 unsigned int hostname_size
= 256;
2346 char *hostname
= (char *) alloca (hostname_size
);
2348 /* Try to get the host name; if the buffer is too short, try
2349 again. Apparently, the only indication gethostname gives of
2350 whether the buffer was large enough is the presence or absence
2351 of a '\0' in the string. Eech. */
2354 gethostname (hostname
, hostname_size
- 1);
2355 hostname
[hostname_size
- 1] = '\0';
2357 /* Was the buffer large enough for the '\0'? */
2358 if (strlen (hostname
) < hostname_size
- 1)
2361 hostname_size
<<= 1;
2362 hostname
= (char *) alloca (hostname_size
);
2365 /* Turn the hostname into the official, fully-qualified hostname.
2366 Don't do this if we're going to dump; this can confuse system
2367 libraries on some machines and make the dumped emacs core dump. */
2370 #endif /* not CANNOT_DUMP */
2371 if (! index (hostname
, '.'))
2375 for (count
= 0;; count
++)
2380 hp
= gethostbyname (hostname
);
2382 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2387 Fsleep_for (make_number (1), Qnil
);
2391 char *fqdn
= (char *) hp
->h_name
;
2396 if (!index (fqdn
, '.'))
2398 /* We still don't have a fully qualified domain name.
2399 Try to find one in the list of alternate names */
2400 char **alias
= hp
->h_aliases
;
2401 while (*alias
&& !index (*alias
, '.'))
2408 /* Convert the host name to lower case. */
2409 /* Using ctype.h here would introduce a possible locale
2410 dependence that is probably wrong for hostnames. */
2414 if (*p
>= 'A' && *p
<= 'Z')
2421 #endif /* HAVE_SOCKETS */
2422 /* We used to try using getdomainname here,
2423 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2424 getdomainname gets the NIS/YP domain which often is not the same
2425 as in Internet domain name. */
2426 #if 0 /* Turned off because sysinfo is not really likely to return the
2427 correct Internet domain. */
2428 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2429 if (! index (hostname
, '.'))
2431 /* The hostname is not fully qualified. Append the domain name. */
2433 int hostlen
= strlen (hostname
);
2434 int domain_size
= 256;
2438 char *domain
= (char *) alloca (domain_size
+ 1);
2439 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2440 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2441 if (sys_domain_size
<= 0)
2443 if (domain_size
< sys_domain_size
)
2445 domain_size
= sys_domain_size
;
2448 strcpy (fqdn
, hostname
);
2449 if (domain
[0] == '.')
2450 strcpy (fqdn
+ hostlen
, domain
);
2451 else if (domain
[0] != 0)
2453 fqdn
[hostlen
] = '.';
2454 strcpy (fqdn
+ hostlen
+ 1, domain
);
2460 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2462 Vsystem_name
= build_string (hostname
);
2463 #endif /* HAVE_GETHOSTNAME */
2468 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2469 if (*p
== ' ' || *p
== '\t')
2476 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2478 #include "sysselect.h"
2481 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2482 /* Cause explanatory error message at compile time,
2483 since the select emulation is not good enough for X. */
2484 int *x
= &x_windows_lose_if_no_select_system_call
;
2487 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2488 * Only checks read descriptors.
2490 /* How long to wait between checking fds in select */
2491 #define SELECT_PAUSE 1
2494 /* For longjmp'ing back to read_input_waiting. */
2496 jmp_buf read_alarm_throw
;
2498 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2499 The read_socket_hook function sets this to 1 while it is waiting. */
2501 int read_alarm_should_throw
;
2509 #else /* not BSD4_1 */
2510 signal (SIGALRM
, SIG_IGN
);
2511 #endif /* not BSD4_1 */
2512 if (read_alarm_should_throw
)
2513 longjmp (read_alarm_throw
, 1);
2517 /* Only rfds are checked. */
2519 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2521 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2522 EMACS_TIME
*timeout
;
2528 extern int proc_buffered_char
[];
2529 #ifndef subprocesses
2530 int process_tick
= 0, update_tick
= 0;
2532 extern int process_tick
, update_tick
;
2536 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2537 /* If we're using X, then the native select will work; we only need the
2538 emulation for non-X usage. */
2539 if (!NILP (Vwindow_system
))
2540 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2542 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2543 local_timeout
= &timeoutval
;
2555 /* If we are looking only for the terminal, with no timeout,
2556 just read it and wait -- that's more efficient. */
2557 if (*local_timeout
== 100000 && process_tick
== update_tick
2558 && FD_ISSET (0, &orfds
))
2561 for (fd
= 1; fd
< nfds
; ++fd
)
2562 if (FD_ISSET (fd
, &orfds
))
2564 if (! detect_input_pending ())
2565 read_input_waiting ();
2571 /* Once a second, till the timer expires, check all the flagged read
2572 * descriptors to see if any input is available. If there is some then
2573 * set the corresponding bit in the return copy of rfds.
2577 register int to_check
, fd
;
2581 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2583 if (FD_ISSET (fd
, &orfds
))
2585 int avail
= 0, status
= 0;
2588 avail
= detect_input_pending (); /* Special keyboard handler */
2592 status
= ioctl (fd
, FIONREAD
, &avail
);
2593 #else /* no FIONREAD */
2594 /* Hoping it will return -1 if nothing available
2595 or 0 if all 0 chars requested are read. */
2596 if (proc_buffered_char
[fd
] >= 0)
2600 avail
= read (fd
, &buf
, 1);
2602 proc_buffered_char
[fd
] = buf
;
2604 #endif /* no FIONREAD */
2606 if (status
>= 0 && avail
> 0)
2614 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2617 turn_on_atimers (0);
2618 signal (SIGALRM
, select_alarm
);
2620 alarm (SELECT_PAUSE
);
2622 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2623 while (select_alarmed
== 0 && *local_timeout
!= 0
2624 && process_tick
== update_tick
)
2626 /* If we are interested in terminal input,
2627 wait by reading the terminal.
2628 That makes instant wakeup for terminal input at least. */
2629 if (FD_ISSET (0, &orfds
))
2631 read_input_waiting ();
2632 if (detect_input_pending ())
2638 (*local_timeout
) -= SELECT_PAUSE
;
2640 /* Reset the old alarm if there was one. */
2641 turn_on_atimers (1);
2643 if (*local_timeout
== 0) /* Stop on timer being cleared */
2648 #endif /* not WINDOWSNT */
2650 /* Read keyboard input into the standard buffer,
2651 waiting for at least one character. */
2653 /* Make all keyboard buffers much bigger when using a window system. */
2654 #ifdef HAVE_WINDOW_SYSTEM
2655 #define BUFFER_SIZE_FACTOR 16
2657 #define BUFFER_SIZE_FACTOR 1
2661 read_input_waiting ()
2663 struct input_event e
;
2665 extern int quit_char
;
2667 if (read_socket_hook
)
2669 struct input_event buf
[256];
2671 read_alarm_should_throw
= 0;
2672 if (! setjmp (read_alarm_throw
))
2673 nread
= (*read_socket_hook
) (0, buf
, 256, 1);
2677 /* Scan the chars for C-g and store them in kbd_buffer. */
2678 for (i
= 0; i
< nread
; i
++)
2680 kbd_buffer_store_event (&buf
[i
]);
2681 /* Don't look at input that follows a C-g too closely.
2682 This reduces lossage due to autorepeat on C-g. */
2683 if (buf
[i
].kind
== ASCII_KEYSTROKE_EVENT
2684 && buf
[i
].code
== quit_char
)
2691 nread
= read (fileno (stdin
), buf
, 1);
2693 /* Scan the chars for C-g and store them in kbd_buffer. */
2694 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2695 e
.frame_or_window
= selected_frame
;
2697 for (i
= 0; i
< nread
; i
++)
2699 /* Convert chars > 0177 to meta events if desired.
2700 We do this under the same conditions that read_avail_input does. */
2701 if (read_socket_hook
== 0)
2703 /* If the user says she has a meta key, then believe her. */
2704 if (meta_key
== 1 && (buf
[i
] & 0x80))
2705 e
.modifiers
= meta_modifier
;
2710 XSETINT (e
.code
, buf
[i
]);
2711 kbd_buffer_store_event (&e
);
2712 /* Don't look at input that follows a C-g too closely.
2713 This reduces lossage due to autorepeat on C-g. */
2714 if (buf
[i
] == quit_char
)
2720 #endif /* not HAVE_SELECT */
2721 #endif /* not VMS */
2722 #endif /* not MSDOS */
2731 lmode
= LINTRUP
| lmode
;
2732 ioctl (fd
, TIOCLSET
, &lmode
);
2740 lmode
= ~LINTRUP
& lmode
;
2741 ioctl (0, TIOCLSET
, &lmode
);
2749 interrupts_deferred
= 0;
2757 interrupts_deferred
= 1;
2760 /* still inside #ifdef BSD4_1 */
2763 int sigheld
; /* Mask of held signals */
2769 sigheld
|= sigbit (signum
);
2777 sigheld
|= sigbit (signum
);
2784 sigheld
&= ~sigbit (signum
);
2789 sigfree () /* Free all held signals */
2792 for (i
= 0; i
< NSIG
; i
++)
2793 if (sigheld
& sigbit (i
))
2801 return 1 << (i
- 1);
2803 #endif /* subprocesses */
2806 /* POSIX signals support - DJB */
2807 /* Anyone with POSIX signals should have ANSI C declarations */
2809 #ifdef POSIX_SIGNALS
2811 sigset_t empty_mask
, full_mask
;
2814 sys_signal (int signal_number
, signal_handler_t action
)
2816 struct sigaction new_action
, old_action
;
2817 sigemptyset (&new_action
.sa_mask
);
2818 new_action
.sa_handler
= action
;
2819 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART)
2820 /* Emacs mostly works better with restartable system services. If this
2821 flag exists, we probably want to turn it on here.
2822 However, on some systems this resets the timeout of `select'
2823 which means that `select' never finishes if it keeps getting signals.
2824 BROKEN_SA_RESTART is defined on those systems. */
2825 new_action
.sa_flags
= SA_RESTART
;
2827 new_action
.sa_flags
= 0;
2829 sigaction (signal_number
, &new_action
, &old_action
);
2830 return (old_action
.sa_handler
);
2834 /* If we're compiling with GCC, we don't need this function, since it
2835 can be written as a macro. */
2837 sys_sigmask (int sig
)
2840 sigemptyset (&mask
);
2841 sigaddset (&mask
, sig
);
2846 /* I'd like to have these guys return pointers to the mask storage in here,
2847 but there'd be trouble if the code was saving multiple masks. I'll be
2848 safe and pass the structure. It normally won't be more than 2 bytes
2852 sys_sigblock (sigset_t new_mask
)
2855 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2860 sys_sigunblock (sigset_t new_mask
)
2863 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2868 sys_sigsetmask (sigset_t new_mask
)
2871 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2875 #endif /* POSIX_SIGNALS */
2877 #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED
2878 static char *my_sys_siglist
[NSIG
];
2882 # define sys_siglist my_sys_siglist
2888 #ifdef POSIX_SIGNALS
2889 sigemptyset (&empty_mask
);
2890 sigfillset (&full_mask
);
2893 #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED
2897 sys_siglist
[SIGABRT
] = "Aborted";
2900 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2903 sys_siglist
[SIGALRM
] = "Alarm clock";
2906 sys_siglist
[SIGBUS
] = "Bus error";
2909 sys_siglist
[SIGCLD
] = "Child status changed";
2912 sys_siglist
[SIGCHLD
] = "Child status changed";
2915 sys_siglist
[SIGCONT
] = "Continued";
2918 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2921 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2924 sys_siglist
[SIGEMT
] = "Emulation trap";
2927 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2930 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2933 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2936 sys_siglist
[SIGHUP
] = "Hangup";
2939 sys_siglist
[SIGILL
] = "Illegal instruction";
2942 sys_siglist
[SIGINT
] = "Interrupt";
2945 sys_siglist
[SIGIO
] = "I/O possible";
2948 sys_siglist
[SIGIOINT
] = "I/O intervention required";
2951 sys_siglist
[SIGIOT
] = "IOT trap";
2954 sys_siglist
[SIGKILL
] = "Killed";
2957 sys_siglist
[SIGLOST
] = "Resource lost";
2960 sys_siglist
[SIGLWP
] = "SIGLWP";
2963 sys_siglist
[SIGMSG
] = "Monitor mode data available";
2966 sys_siglist
[SIGWIND
] = "SIGPHONE";
2969 sys_siglist
[SIGPIPE
] = "Broken pipe";
2972 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
2975 sys_siglist
[SIGPROF
] = "Profiling timer expired";
2978 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
2981 sys_siglist
[SIGPWR
] = "Power-fail restart";
2984 sys_siglist
[SIGQUIT
] = "Quit";
2987 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
2990 sys_siglist
[SIGSAK
] = "Secure attention";
2993 sys_siglist
[SIGSEGV
] = "Segmentation violation";
2996 sys_siglist
[SIGSOUND
] = "Sound completed";
2999 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
3002 sys_siglist
[SIGSTP
] = "Stopped (user)";
3005 sys_siglist
[SIGSYS
] = "Bad argument to system call";
3008 sys_siglist
[SIGTERM
] = "Terminated";
3011 sys_siglist
[SIGTHAW
] = "SIGTHAW";
3014 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
3017 sys_siglist
[SIGTSTP
] = "Stopped (user)";
3020 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
3023 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
3026 sys_siglist
[SIGURG
] = "Urgent I/O condition";
3029 sys_siglist
[SIGUSR1
] = "User defined signal 1";
3032 sys_siglist
[SIGUSR2
] = "User defined signal 2";
3035 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
3038 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
3041 sys_siglist
[SIGWINCH
] = "Window size changed";
3044 sys_siglist
[SIGWIND
] = "SIGWIND";
3047 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3050 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3053 #endif /* !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED */
3062 /* Figure out how many bits the system's random number generator uses.
3063 `random' and `lrand48' are assumed to return 31 usable bits.
3064 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3065 so we'll shift it and treat it like the 15-bit USG `rand'. */
3069 # define RAND_BITS 31
3070 # else /* !HAVE_RANDOM */
3071 # ifdef HAVE_LRAND48
3072 # define RAND_BITS 31
3073 # define random lrand48
3074 # else /* !HAVE_LRAND48 */
3075 # define RAND_BITS 15
3076 # if RAND_MAX == 32767
3077 # define random rand
3078 # else /* RAND_MAX != 32767 */
3079 # if RAND_MAX == 2147483647
3080 # define random() (rand () >> 16)
3081 # else /* RAND_MAX != 2147483647 */
3083 # define random rand
3085 # define random() (rand () >> 16)
3087 # endif /* RAND_MAX != 2147483647 */
3088 # endif /* RAND_MAX != 32767 */
3089 # endif /* !HAVE_LRAND48 */
3090 # endif /* !HAVE_RANDOM */
3091 #endif /* !RAND_BITS */
3098 srandom ((unsigned int)arg
);
3100 # ifdef HAVE_LRAND48
3103 srand ((unsigned int)arg
);
3109 * Build a full Emacs-sized word out of whatever we've got.
3110 * This suffices even for a 64-bit architecture with a 15-bit rand.
3115 long val
= random ();
3116 #if VALBITS > RAND_BITS
3117 val
= (val
<< RAND_BITS
) ^ random ();
3118 #if VALBITS > 2*RAND_BITS
3119 val
= (val
<< RAND_BITS
) ^ random ();
3120 #if VALBITS > 3*RAND_BITS
3121 val
= (val
<< RAND_BITS
) ^ random ();
3122 #if VALBITS > 4*RAND_BITS
3123 val
= (val
<< RAND_BITS
) ^ random ();
3124 #endif /* need at least 5 */
3125 #endif /* need at least 4 */
3126 #endif /* need at least 3 */
3127 #endif /* need at least 2 */
3128 return val
& ((1L << VALBITS
) - 1);
3131 #ifdef WRONG_NAME_INSQUE
3144 /* If any place else asks for the TERM variable,
3145 allow it to be overridden with the EMACS_TERM variable
3146 before attempting to translate the logical name TERM. As a last
3147 resort, ask for VAX C's special idea of the TERM variable. */
3154 static char buf
[256];
3155 static struct dsc$descriptor_s equiv
3156 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3157 static struct dsc$descriptor_s d_name
3158 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3161 if (!strcmp (name
, "TERM"))
3163 val
= (char *) getenv ("EMACS_TERM");
3168 d_name
.dsc$w_length
= strlen (name
);
3169 d_name
.dsc$a_pointer
= name
;
3170 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3172 char *str
= (char *) xmalloc (eqlen
+ 1);
3173 bcopy (buf
, str
, eqlen
);
3175 /* This is a storage leak, but a pain to fix. With luck,
3176 no one will ever notice. */
3179 return (char *) getenv (name
);
3184 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3185 to force a call on the debugger from within the image. */
3190 LIB$
SIGNAL (SS$_DEBUG
);
3196 #ifdef LINK_CRTL_SHARE
3197 #ifdef SHARABLE_LIB_BUG
3198 /* Variables declared noshare and initialized in sharable libraries
3199 cannot be shared. The VMS linker incorrectly forces you to use a private
3200 version which is uninitialized... If not for this "feature", we
3201 could use the C library definition of sys_nerr and sys_errlist. */
3203 char *sys_errlist
[] =
3207 "no such file or directory",
3209 "interrupted system call",
3211 "no such device or address",
3212 "argument list too long",
3213 "exec format error",
3216 "no more processes",
3217 "not enough memory",
3218 "permission denied",
3220 "block device required",
3221 "mount devices busy",
3223 "cross-device link",
3228 "file table overflow",
3229 "too many open files",
3233 "no space left on device",
3235 "read-only file system",
3241 "vax/vms specific error code nontranslatable error"
3243 #endif /* SHARABLE_LIB_BUG */
3244 #endif /* LINK_CRTL_SHARE */
3247 #ifndef HAVE_STRERROR
3253 extern char *sys_errlist
[];
3254 extern int sys_nerr
;
3256 if (errnum
>= 0 && errnum
< sys_nerr
)
3257 return sys_errlist
[errnum
];
3258 return (char *) "Unknown error";
3260 #endif /* not WINDOWSNT */
3261 #endif /* ! HAVE_STRERROR */
3264 emacs_open (path
, oflag
, mode
)
3268 register int rtnval
;
3271 if (oflag
& O_CREAT
)
3272 return creat (path
, mode
);
3275 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3276 && (errno
== EINTR
));
3285 register int rtnval
;
3287 while ((rtnval
= close (fd
)) == -1
3288 && (errno
== EINTR
))
3291 /* If close is interrupted SunOS 4.1 may or may not have closed the
3292 file descriptor. If it did the second close will fail with
3293 errno = EBADF. That means we have succeeded. */
3294 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3301 emacs_read (fildes
, buf
, nbyte
)
3306 register int rtnval
;
3308 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3309 && (errno
== EINTR
));
3314 emacs_write (fildes
, buf
, nbyte
)
3319 register int rtnval
, bytes_written
;
3325 rtnval
= write (fildes
, buf
, nbyte
);
3332 return (bytes_written
? bytes_written
: -1);
3337 bytes_written
+= rtnval
;
3339 return (bytes_written
);
3344 * All of the following are for USG.
3346 * On USG systems the system calls are INTERRUPTIBLE by signals
3347 * that the user program has elected to catch. Thus the system call
3348 * must be retried in these cases. To handle this without massive
3349 * changes in the source code, we remap the standard system call names
3350 * to names for our own functions in sysdep.c that do the system call
3351 * with retries. Actually, for portability reasons, it is good
3352 * programming practice, as this example shows, to limit all actual
3353 * system calls to a single occurrence in the source. Sure, this
3354 * adds an extra level of function call overhead but it is almost
3355 * always negligible. Fred Fish, Unisoft Systems Inc.
3359 * Warning, this function may not duplicate 4.2 action properly
3360 * under error conditions.
3364 /* In 4.1, param.h fails to define this. */
3365 #define MAXPATHLEN 1024
3374 char *npath
, *spath
;
3375 extern char *getcwd ();
3377 BLOCK_INPUT
; /* getcwd uses malloc */
3378 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3384 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3385 up to first slash. Should be harmless on other systems. */
3386 while (*npath
&& *npath
!= '/')
3388 strcpy (pathname
, npath
);
3389 free (spath
); /* getcwd uses malloc */
3394 #endif /* HAVE_GETWD */
3397 * Emulate rename using unlink/link. Note that this is
3398 * only partially correct. Also, doesn't enforce restriction
3399 * that files be of same type (regular->regular, dir->dir, etc).
3408 if (access (from
, 0) == 0)
3411 if (link (from
, to
) == 0)
3412 if (unlink (from
) == 0)
3424 /* HPUX curses library references perror, but as far as we know
3425 it won't be called. Anyway this definition will do for now. */
3431 #endif /* not HAVE_PERROR */
3437 * Emulate BSD dup2. First close newd if it already exists.
3438 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3439 * until we are, then close the unsuccessful ones.
3446 register int fd
, ret
;
3451 return fcntl (oldd
, F_DUPFD
, newd
);
3458 ret
= dup2 (old
,new);
3464 #endif /* not HAVE_DUP2 */
3467 * Gettimeofday. Simulate as much as possible. Only accurate
3468 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3469 * Only needed when subprocesses are defined.
3474 #ifndef HAVE_GETTIMEOFDAY
3479 gettimeofday (tp
, tzp
)
3481 struct timezone
*tzp
;
3483 extern long time ();
3485 tp
->tv_sec
= time ((long *)0);
3488 tzp
->tz_minuteswest
= -1;
3495 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3498 * This function will go away as soon as all the stubs fixed. (fnf)
3505 printf ("%s not yet implemented\r\n", badfunc
);
3512 /* Directory routines for systems that don't have them. */
3514 #ifdef SYSV_SYSTEM_DIR
3518 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3522 register DIR *dirp
; /* stream from opendir */
3526 rtnval
= emacs_close (dirp
->dd_fd
);
3528 /* Some systems (like Solaris) allocate the buffer and the DIR all
3529 in one block. Why in the world are we freeing this ourselves
3531 #if ! (defined (sun) && defined (USG5_4))
3532 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3534 xfree ((char *) dirp
);
3538 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3539 #endif /* SYSV_SYSTEM_DIR */
3541 #ifdef NONSYSTEM_DIR_LIBRARY
3545 char *filename
; /* name of directory */
3547 register DIR *dirp
; /* -> malloc'ed storage */
3548 register int fd
; /* file descriptor for read */
3549 struct stat sbuf
; /* result of fstat */
3551 fd
= emacs_open (filename
, O_RDONLY
, 0);
3556 if (fstat (fd
, &sbuf
) < 0
3557 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3558 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3562 return 0; /* bad luck today */
3567 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3574 register DIR *dirp
; /* stream from opendir */
3576 emacs_close (dirp
->dd_fd
);
3577 xfree ((char *) dirp
);
3585 ino_t od_ino
; /* inode */
3586 char od_name
[DIRSIZ
]; /* filename */
3588 #endif /* not VMS */
3590 struct direct dir_static
; /* simulated directory contents */
3595 register DIR *dirp
; /* stream from opendir */
3598 register struct olddir
*dp
; /* -> directory data */
3600 register struct dir$_name
*dp
; /* -> directory data */
3601 register struct dir$_version
*dv
; /* -> version data */
3606 if (dirp
->dd_loc
>= dirp
->dd_size
)
3607 dirp
->dd_loc
= dirp
->dd_size
= 0;
3609 if (dirp
->dd_size
== 0 /* refill buffer */
3610 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3614 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3615 dirp
->dd_loc
+= sizeof (struct olddir
);
3617 if (dp
->od_ino
!= 0) /* not deleted entry */
3619 dir_static
.d_ino
= dp
->od_ino
;
3620 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3621 dir_static
.d_name
[DIRSIZ
] = '\0';
3622 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3623 dir_static
.d_reclen
= sizeof (struct direct
)
3625 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3626 return &dir_static
; /* -> simulated structure */
3629 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3630 if (dirp
->dd_loc
== 0)
3631 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3632 : dp
->dir$b_namecount
;
3633 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3634 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3635 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3636 dir_static
.d_reclen
= sizeof (struct direct
)
3638 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3639 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3640 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3641 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3648 /* readdirver is just like readdir except it returns all versions of a file
3649 as separate entries. */
3654 register DIR *dirp
; /* stream from opendir */
3656 register struct dir$_name
*dp
; /* -> directory data */
3657 register struct dir$_version
*dv
; /* -> version data */
3659 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3660 dirp
->dd_loc
= dirp
->dd_size
= 0;
3662 if (dirp
->dd_size
== 0 /* refill buffer */
3663 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3666 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3667 if (dirp
->dd_loc
== 0)
3668 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3669 : dp
->dir$b_namecount
;
3670 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3671 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3672 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3673 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3674 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3675 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3676 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3677 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3683 #endif /* NONSYSTEM_DIR_LIBRARY */
3687 set_file_times (filename
, atime
, mtime
)
3689 EMACS_TIME atime
, mtime
;
3692 struct timeval tv
[2];
3695 return utimes (filename
, tv
);
3696 #else /* not HAVE_UTIMES */
3698 utb
.actime
= EMACS_SECS (atime
);
3699 utb
.modtime
= EMACS_SECS (mtime
);
3700 return utime (filename
, &utb
);
3701 #endif /* not HAVE_UTIMES */
3704 /* mkdir and rmdir functions, for systems which don't have them. */
3708 * Written by Robert Rother, Mariah Corporation, August 1985.
3710 * If you want it, it's yours. All I ask in return is that if you
3711 * figure out how to do this in a Bourne Shell script you send me
3713 * sdcsvax!rmr or rmr@uscd
3715 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3716 * subroutine. 11Mar86; hoptoad!gnu
3718 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3719 * subroutine didn't return EEXIST. It does now.
3725 #ifdef MKDIR_PROTOTYPE
3729 mkdir (dpath
, dmode
)
3734 int cpid
, status
, fd
;
3735 struct stat statbuf
;
3737 if (stat (dpath
, &statbuf
) == 0)
3739 errno
= EEXIST
; /* Stat worked, so it already exists */
3743 /* If stat fails for a reason other than non-existence, return error */
3744 if (errno
!= ENOENT
)
3747 synch_process_alive
= 1;
3748 switch (cpid
= fork ())
3751 case -1: /* Error in fork */
3752 return (-1); /* Errno is set already */
3754 case 0: /* Child process */
3756 * Cheap hack to set mode of new directory. Since this
3757 * child process is going away anyway, we zap its umask.
3758 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3759 * directory. Does anybody care?
3761 status
= umask (0); /* Get current umask */
3762 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3763 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3770 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3771 _exit (-1); /* Can't exec /bin/mkdir */
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/mkdir failed */
3785 #endif /* not HAVE_MKDIR */
3792 int cpid
, status
, fd
;
3793 struct stat statbuf
;
3795 if (stat (dpath
, &statbuf
) != 0)
3797 /* Stat just set errno. We don't have to */
3801 synch_process_alive
= 1;
3802 switch (cpid
= fork ())
3805 case -1: /* Error in fork */
3806 return (-1); /* Errno is set already */
3808 case 0: /* Child process */
3809 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3816 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3817 _exit (-1); /* Can't exec /bin/rmdir */
3819 default: /* Parent process */
3820 wait_for_termination (cpid
);
3823 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3825 errno
= EIO
; /* We don't know why, but */
3826 return -1; /* /bin/rmdir failed */
3831 #endif /* !HAVE_RMDIR */
3835 /* Functions for VMS */
3837 #include "vms-pwd.h"
3842 /* Return as a string the VMS error string pertaining to STATUS.
3843 Reuses the same static buffer each time it is called. */
3847 int status
; /* VMS status code */
3851 static char buf
[257];
3853 bufadr
[0] = sizeof buf
- 1;
3854 bufadr
[1] = (int) buf
;
3855 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3856 return "untranslatable VMS error status";
3864 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3865 * not work correctly. (It also doesn't work well in version 2.3.)
3870 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3871 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3875 unsigned short s_buflen
;
3876 unsigned short s_code
;
3878 unsigned short *s_retlenadr
;
3882 #define buflen s.s_buflen
3883 #define code s.s_code
3884 #define bufadr s.s_bufadr
3885 #define retlenadr s.s_retlenadr
3887 #define R_OK 4 /* test for read permission */
3888 #define W_OK 2 /* test for write permission */
3889 #define X_OK 1 /* test for execute (search) permission */
3890 #define F_OK 0 /* test for presence of file */
3893 sys_access (path
, mode
)
3897 static char *user
= NULL
;
3900 /* translate possible directory spec into .DIR file name, so brain-dead
3901 * access can treat the directory like a file. */
3902 if (directory_file_name (path
, dir_fn
))
3906 return access (path
, mode
);
3907 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3913 unsigned short int dummy
;
3915 static int constant
= ACL$C_FILE
;
3916 DESCRIPTOR (path_desc
, path
);
3917 DESCRIPTOR (user_desc
, user
);
3921 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3924 acces
|= CHP$M_READ
;
3926 acces
|= CHP$M_WRITE
;
3927 itemlst
[0].buflen
= sizeof (int);
3928 itemlst
[0].code
= CHP$_FLAGS
;
3929 itemlst
[0].bufadr
= (char *) &flags
;
3930 itemlst
[0].retlenadr
= &dummy
;
3931 itemlst
[1].buflen
= sizeof (int);
3932 itemlst
[1].code
= CHP$_ACCESS
;
3933 itemlst
[1].bufadr
= (char *) &acces
;
3934 itemlst
[1].retlenadr
= &dummy
;
3935 itemlst
[2].end
= CHP$_END
;
3936 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3937 return stat
== SS$_NORMAL
? 0 : -1;
3941 #else /* not VMS4_4 */
3944 #define ACE$M_WRITE 2
3945 #define ACE$C_KEYID 1
3947 static unsigned short memid
, grpid
;
3948 static unsigned int uic
;
3950 /* Called from init_sys_modes, so it happens not very often
3951 but at least each time Emacs is loaded. */
3953 sys_access_reinit ()
3959 sys_access (filename
, type
)
3965 int status
, size
, i
, typecode
, acl_controlled
;
3966 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3967 union prvdef prvmask
;
3969 /* Get UIC and GRP values for protection checking. */
3972 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3975 memid
= uic
& 0xFFFF;
3979 if (type
!= 2) /* not checking write access */
3980 return access (filename
, type
);
3982 /* Check write protection. */
3984 #define CHECKPRIV(bit) (prvmask.bit)
3985 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3987 /* Find privilege bits */
3988 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3990 error ("Unable to find privileges: %s", vmserrstr (status
));
3991 if (CHECKPRIV (PRV$V_BYPASS
))
3992 return 0; /* BYPASS enabled */
3994 fab
.fab$b_fac
= FAB$M_GET
;
3995 fab
.fab$l_fna
= filename
;
3996 fab
.fab$b_fns
= strlen (filename
);
3997 fab
.fab$l_xab
= &xab
;
3998 xab
= cc$rms_xabpro
;
3999 xab
.xab$l_aclbuf
= aclbuf
;
4000 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
4001 status
= SYS$
OPEN (&fab
, 0, 0);
4004 SYS$
CLOSE (&fab
, 0, 0);
4005 /* Check system access */
4006 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
4008 /* Check ACL entries, if any */
4010 if (xab
.xab$w_acllen
> 0)
4013 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
4014 while (*aclptr
&& aclptr
< aclend
)
4016 size
= (*aclptr
& 0xff) / 4;
4017 typecode
= (*aclptr
>> 8) & 0xff;
4018 if (typecode
== ACE$C_KEYID
)
4019 for (i
= size
- 1; i
> 1; i
--)
4020 if (aclptr
[i
] == uic
)
4023 if (aclptr
[1] & ACE$M_WRITE
)
4024 return 0; /* Write access through ACL */
4026 aclptr
= &aclptr
[size
];
4028 if (acl_controlled
) /* ACL specified, prohibits write access */
4031 /* No ACL entries specified, check normal protection */
4032 if (WRITABLE (XAB$V_WLD
)) /* World writable */
4034 if (WRITABLE (XAB$V_GRP
) &&
4035 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
4036 return 0; /* Group writable */
4037 if (WRITABLE (XAB$V_OWN
) &&
4038 (xab
.xab$l_uic
& 0xFFFF) == memid
)
4039 return 0; /* Owner writable */
4041 return -1; /* Not writable */
4043 #endif /* not VMS4_4 */
4046 static char vtbuf
[NAM$C_MAXRSS
+1];
4048 /* translate a vms file spec to a unix path */
4050 sys_translate_vms (vfile
)
4061 /* leading device or logical name is a root directory */
4062 if (p
= strchr (vfile
, ':'))
4071 if (*p
== '[' || *p
== '<')
4073 while (*++vfile
!= *p
+ 2)
4077 if (vfile
[-1] == *p
)
4100 static char utbuf
[NAM$C_MAXRSS
+1];
4102 /* translate a unix path to a VMS file spec */
4104 sys_translate_unix (ufile
)
4127 if (index (&ufile
[1], '/'))
4134 if (index (&ufile
[1], '/'))
4141 if (strncmp (ufile
, "./", 2) == 0)
4148 ufile
++; /* skip the dot */
4149 if (index (&ufile
[1], '/'))
4154 else if (strncmp (ufile
, "../", 3) == 0)
4162 ufile
+= 2; /* skip the dots */
4163 if (index (&ufile
[1], '/'))
4188 extern char *getcwd ();
4190 #define MAXPATHLEN 1024
4192 ptr
= xmalloc (MAXPATHLEN
);
4193 val
= getcwd (ptr
, MAXPATHLEN
);
4199 strcpy (pathname
, ptr
);
4208 long item_code
= JPI$_OWNER
;
4209 unsigned long parent_id
;
4212 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4215 vaxc$errno
= status
;
4225 return (getgid () << 16) | getuid ();
4230 sys_read (fildes
, buf
, nbyte
)
4235 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4240 sys_write (fildes
, buf
, nbyte
)
4245 register int nwrote
, rtnval
= 0;
4247 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4253 return rtnval
? rtnval
: -1;
4254 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4255 return rtnval
? rtnval
: -1;
4256 return (rtnval
+ nwrote
);
4261 * VAX/VMS VAX C RTL really loses. It insists that records
4262 * end with a newline (carriage return) character, and if they
4263 * don't it adds one (nice of it isn't it!)
4265 * Thus we do this stupidity below.
4270 sys_write (fildes
, buf
, nbytes
)
4273 unsigned int nbytes
;
4280 fstat (fildes
, &st
);
4286 /* Handle fixed-length files with carriage control. */
4287 if (st
.st_fab_rfm
== FAB$C_FIX
4288 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4290 len
= st
.st_fab_mrs
;
4291 retval
= write (fildes
, p
, min (len
, nbytes
));
4294 retval
++; /* This skips the implied carriage control */
4298 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4299 while (*e
!= '\n' && e
> p
) e
--;
4300 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4301 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4303 retval
= write (fildes
, p
, len
);
4314 /* Create file NEW copying its attributes from file OLD. If
4315 OLD is 0 or does not exist, create based on the value of
4318 /* Protection value the file should ultimately have.
4319 Set by create_copy_attrs, and use by rename_sansversions. */
4320 static unsigned short int fab_final_pro
;
4323 creat_copy_attrs (old
, new)
4326 struct FAB fab
= cc$rms_fab
;
4327 struct XABPRO xabpro
;
4328 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4329 extern int vms_stmlf_recfm
;
4333 fab
.fab$b_fac
= FAB$M_GET
;
4334 fab
.fab$l_fna
= old
;
4335 fab
.fab$b_fns
= strlen (old
);
4336 fab
.fab$l_xab
= (char *) &xabpro
;
4337 xabpro
= cc$rms_xabpro
;
4338 xabpro
.xab$l_aclbuf
= aclbuf
;
4339 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4340 /* Call $OPEN to fill in the fab & xabpro fields. */
4341 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4343 SYS$
CLOSE (&fab
, 0, 0);
4344 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4345 if (xabpro
.xab$w_acllen
> 0)
4347 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4348 /* If the acl buffer was too short, redo open with longer one.
4349 Wouldn't need to do this if there were some system imposed
4350 limit on the size of an ACL, but I can't find any such. */
4352 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4353 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4354 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4355 SYS$
CLOSE (&fab
, 0, 0);
4361 xabpro
.xab$l_aclbuf
= 0;
4366 fab
.fab$l_fna
= new;
4367 fab
.fab$b_fns
= strlen (new);
4371 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4372 fab
.fab$b_rat
= FAB$M_CR
;
4375 /* Set the file protections such that we will be able to manipulate
4376 this file. Once we are done writing and renaming it, we will set
4377 the protections back. */
4379 fab_final_pro
= xabpro
.xab$w_pro
;
4381 SYS$
SETDFPROT (0, &fab_final_pro
);
4382 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4384 /* Create the new file with either default attrs or attrs copied
4386 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4388 SYS$
CLOSE (&fab
, 0, 0);
4389 /* As this is a "replacement" for creat, return a file descriptor
4390 opened for writing. */
4391 return open (new, O_WRONLY
);
4396 #include <varargs.h>
4399 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4404 sys_creat (va_alist
)
4407 va_list list_incrementer
;
4410 int rfd
; /* related file descriptor */
4411 int fd
; /* Our new file descriptor */
4418 extern int vms_stmlf_recfm
;
4421 va_start (list_incrementer
);
4422 name
= va_arg (list_incrementer
, char *);
4423 mode
= va_arg (list_incrementer
, int);
4425 rfd
= va_arg (list_incrementer
, int);
4426 va_end (list_incrementer
);
4429 /* Use information from the related file descriptor to set record
4430 format of the newly created file. */
4431 fstat (rfd
, &st_buf
);
4432 switch (st_buf
.st_fab_rfm
)
4435 strcpy (rfm
, "rfm = fix");
4436 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4437 strcpy (rat
, "rat = ");
4438 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4440 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4441 strcat (rat
, "ftn");
4442 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4443 strcat (rat
, "prn");
4444 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4445 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4446 strcat (rat
, ", blk");
4448 strcat (rat
, "blk");
4449 return creat (name
, 0, rfm
, rat
, mrs
);
4452 strcpy (rfm
, "rfm = vfc");
4453 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4454 strcpy (rat
, "rat = ");
4455 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4457 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4458 strcat (rat
, "ftn");
4459 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4460 strcat (rat
, "prn");
4461 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4462 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4463 strcat (rat
, ", blk");
4465 strcat (rat
, "blk");
4466 return creat (name
, 0, rfm
, rat
, fsz
);
4469 strcpy (rfm
, "rfm = stm");
4473 strcpy (rfm
, "rfm = stmcr");
4477 strcpy (rfm
, "rfm = stmlf");
4481 strcpy (rfm
, "rfm = udf");
4485 strcpy (rfm
, "rfm = var");
4488 strcpy (rat
, "rat = ");
4489 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4491 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4492 strcat (rat
, "ftn");
4493 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4494 strcat (rat
, "prn");
4495 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4496 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4497 strcat (rat
, ", blk");
4499 strcat (rat
, "blk");
4503 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4504 strcpy (rat
, "rat=cr");
4506 /* Until the VAX C RTL fixes the many bugs with modes, always use
4507 mode 0 to get the user's default protection. */
4508 fd
= creat (name
, 0, rfm
, rat
);
4509 if (fd
< 0 && errno
== EEXIST
)
4511 if (unlink (name
) < 0)
4512 report_file_error ("delete", build_string (name
));
4513 fd
= creat (name
, 0, rfm
, rat
);
4519 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4521 sys_fwrite (ptr
, size
, num
, fp
)
4522 register char * ptr
;
4525 register int tot
= num
* size
;
4533 * The VMS C library routine creat actually creates a new version of an
4534 * existing file rather than truncating the old version. There are times
4535 * when this is not the desired behavior, for instance, when writing an
4536 * auto save file (you only want one version), or when you don't have
4537 * write permission in the directory containing the file (but the file
4538 * itself is writable). Hence this routine, which is equivalent to
4539 * "close (creat (fn, 0));" on Unix if fn already exists.
4545 struct FAB xfab
= cc$rms_fab
;
4546 struct RAB xrab
= cc$rms_rab
;
4549 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4550 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4551 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4552 xfab
.fab$l_fna
= fn
;
4553 xfab
.fab$b_fns
= strlen (fn
);
4554 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4556 xrab
.rab$l_fab
= &xfab
;
4558 /* This gibberish opens the file, positions to the first record, and
4559 deletes all records from there until the end of file. */
4560 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4562 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4563 (SYS$
FIND (&xrab
) & 01) == 01 &&
4564 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4575 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4576 SYSPRV or a readable SYSUAF.DAT. */
4582 * Routine to read the VMS User Authorization File and return
4583 * a specific user's record.
4586 static struct UAF retuaf
;
4589 get_uaf_name (uname
)
4596 uaf_fab
= cc$rms_fab
;
4597 uaf_rab
= cc$rms_rab
;
4598 /* initialize fab fields */
4599 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4600 uaf_fab
.fab$b_fns
= 21;
4601 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4602 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4603 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4604 /* initialize rab fields */
4605 uaf_rab
.rab$l_fab
= &uaf_fab
;
4606 /* open the User Authorization File */
4607 status
= SYS$
OPEN (&uaf_fab
);
4611 vaxc$errno
= status
;
4614 status
= SYS$
CONNECT (&uaf_rab
);
4618 vaxc$errno
= status
;
4621 /* read the requested record - index is in uname */
4622 uaf_rab
.rab$l_kbf
= uname
;
4623 uaf_rab
.rab$b_ksz
= strlen (uname
);
4624 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4625 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4626 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4627 status
= SYS$
GET (&uaf_rab
);
4631 vaxc$errno
= status
;
4634 /* close the User Authorization File */
4635 status
= SYS$
DISCONNECT (&uaf_rab
);
4639 vaxc$errno
= status
;
4642 status
= SYS$
CLOSE (&uaf_fab
);
4646 vaxc$errno
= status
;
4660 uaf_fab
= cc$rms_fab
;
4661 uaf_rab
= cc$rms_rab
;
4662 /* initialize fab fields */
4663 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4664 uaf_fab
.fab$b_fns
= 21;
4665 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4666 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4667 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4668 /* initialize rab fields */
4669 uaf_rab
.rab$l_fab
= &uaf_fab
;
4670 /* open the User Authorization File */
4671 status
= SYS$
OPEN (&uaf_fab
);
4675 vaxc$errno
= status
;
4678 status
= SYS$
CONNECT (&uaf_rab
);
4682 vaxc$errno
= status
;
4685 /* read the requested record - index is in uic */
4686 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4687 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4688 uaf_rab
.rab$b_ksz
= sizeof uic
;
4689 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4690 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4691 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4692 status
= SYS$
GET (&uaf_rab
);
4696 vaxc$errno
= status
;
4699 /* close the User Authorization File */
4700 status
= SYS$
DISCONNECT (&uaf_rab
);
4704 vaxc$errno
= status
;
4707 status
= SYS$
CLOSE (&uaf_fab
);
4711 vaxc$errno
= status
;
4717 static struct passwd retpw
;
4725 /* copy these out first because if the username is 32 chars, the next
4726 section will overwrite the first byte of the UIC */
4727 retpw
.pw_uid
= up
->uaf$w_mem
;
4728 retpw
.pw_gid
= up
->uaf$w_grp
;
4730 /* I suppose this is not the best style, to possibly overwrite one
4731 byte beyond the end of the field, but what the heck... */
4732 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4733 while (ptr
[-1] == ' ')
4736 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4738 /* the rest of these are counted ascii strings */
4739 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4740 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4741 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4742 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4743 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4744 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4745 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4746 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4750 #else /* not READ_SYSUAF */
4751 static struct passwd retpw
;
4752 #endif /* not READ_SYSUAF */
4763 unsigned char * full
;
4764 #endif /* READ_SYSUAF */
4769 if ('a' <= *ptr
&& *ptr
<= 'z')
4774 if (!(up
= get_uaf_name (name
)))
4776 return cnv_uaf_pw (up
);
4778 if (strcmp (name
, getenv ("USER")) == 0)
4780 retpw
.pw_uid
= getuid ();
4781 retpw
.pw_gid
= getgid ();
4782 strcpy (retpw
.pw_name
, name
);
4783 if (full
= egetenv ("FULLNAME"))
4784 strcpy (retpw
.pw_gecos
, full
);
4786 *retpw
.pw_gecos
= '\0';
4787 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4788 *retpw
.pw_shell
= '\0';
4793 #endif /* not READ_SYSUAF */
4803 if (!(up
= get_uaf_uic (uid
)))
4805 return cnv_uaf_pw (up
);
4807 if (uid
== sys_getuid ())
4808 return getpwnam (egetenv ("USER"));
4811 #endif /* not READ_SYSUAF */
4814 /* return total address space available to the current process. This is
4815 the sum of the current p0 size, p1 size and free page table entries
4821 unsigned long free_pages
;
4822 unsigned long frep0va
;
4823 unsigned long frep1va
;
4826 item_code
= JPI$_FREPTECNT
;
4827 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4830 vaxc$errno
= status
;
4835 item_code
= JPI$_FREP0VA
;
4836 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4839 vaxc$errno
= status
;
4842 item_code
= JPI$_FREP1VA
;
4843 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4846 vaxc$errno
= status
;
4850 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4854 define_logical_name (varname
, string
)
4858 struct dsc$descriptor_s strdsc
=
4859 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4860 struct dsc$descriptor_s envdsc
=
4861 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4862 struct dsc$descriptor_s lnmdsc
=
4863 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4865 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4869 delete_logical_name (varname
)
4872 struct dsc$descriptor_s envdsc
=
4873 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4874 struct dsc$descriptor_s lnmdsc
=
4875 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4877 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4895 error ("execvp system call not implemented");
4904 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4905 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4906 char from_esn
[NAM$C_MAXRSS
];
4907 char to_esn
[NAM$C_MAXRSS
];
4909 from_fab
.fab$l_fna
= from
;
4910 from_fab
.fab$b_fns
= strlen (from
);
4911 from_fab
.fab$l_nam
= &from_nam
;
4912 from_fab
.fab$l_fop
= FAB$M_NAM
;
4914 from_nam
.nam$l_esa
= from_esn
;
4915 from_nam
.nam$b_ess
= sizeof from_esn
;
4917 to_fab
.fab$l_fna
= to
;
4918 to_fab
.fab$b_fns
= strlen (to
);
4919 to_fab
.fab$l_nam
= &to_nam
;
4920 to_fab
.fab$l_fop
= FAB$M_NAM
;
4922 to_nam
.nam$l_esa
= to_esn
;
4923 to_nam
.nam$b_ess
= sizeof to_esn
;
4925 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4931 if (status
== RMS$_DEV
)
4935 vaxc$errno
= status
;
4940 /* This function renames a file like `rename', but it strips
4941 the version number from the "to" filename, such that the "to" file is
4942 will always be a new version. It also sets the file protection once it is
4943 finished. The protection that we will use is stored in fab_final_pro,
4944 and was set when we did a creat_copy_attrs to create the file that we
4947 We could use the chmod function, but Eunichs uses 3 bits per user category
4948 to describe the protection, and VMS uses 4 (write and delete are separate
4949 bits). To maintain portability, the VMS implementation of `chmod' wires
4950 the W and D bits together. */
4953 static struct fibdef fib
; /* We need this initialized to zero */
4954 char vms_file_written
[NAM$C_MAXRSS
];
4957 rename_sans_version (from
,to
)
4964 struct FAB to_fab
= cc$rms_fab
;
4965 struct NAM to_nam
= cc$rms_nam
;
4966 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4967 struct dsc$descriptor fib_attr
[2]
4968 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4969 char to_esn
[NAM$C_MAXRSS
];
4971 $
DESCRIPTOR (disk
,to_esn
);
4973 to_fab
.fab$l_fna
= to
;
4974 to_fab
.fab$b_fns
= strlen (to
);
4975 to_fab
.fab$l_nam
= &to_nam
;
4976 to_fab
.fab$l_fop
= FAB$M_NAM
;
4978 to_nam
.nam$l_esa
= to_esn
;
4979 to_nam
.nam$b_ess
= sizeof to_esn
;
4981 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4983 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4984 *(to_nam
.nam$l_ver
) = '\0';
4986 stat
= rename (from
, to_esn
);
4990 strcpy (vms_file_written
, to_esn
);
4992 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4993 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4995 /* Now set the file protection to the correct value */
4996 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4998 /* Copy these fields into the fib */
4999 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
5000 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
5001 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
5003 SYS$
CLOSE (&to_fab
, 0, 0);
5005 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
5008 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
5009 0, 0, 0, &fib_attr
, 0);
5012 stat
= SYS$
DASSGN (chan
);
5015 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
5026 unsigned short fid
[3];
5027 char esa
[NAM$C_MAXRSS
];
5030 fab
.fab$l_fop
= FAB$M_OFP
;
5031 fab
.fab$l_fna
= file
;
5032 fab
.fab$b_fns
= strlen (file
);
5033 fab
.fab$l_nam
= &nam
;
5036 nam
.nam$l_esa
= esa
;
5037 nam
.nam$b_ess
= NAM$C_MAXRSS
;
5039 status
= SYS$
PARSE (&fab
);
5040 if ((status
& 1) == 0)
5043 vaxc$errno
= status
;
5046 status
= SYS$
SEARCH (&fab
);
5047 if ((status
& 1) == 0)
5050 vaxc$errno
= status
;
5054 fid
[0] = nam
.nam$w_fid
[0];
5055 fid
[1] = nam
.nam$w_fid
[1];
5056 fid
[2] = nam
.nam$w_fid
[2];
5058 fab
.fab$l_fna
= new;
5059 fab
.fab$b_fns
= strlen (new);
5061 status
= SYS$
PARSE (&fab
);
5062 if ((status
& 1) == 0)
5065 vaxc$errno
= status
;
5069 nam
.nam$w_fid
[0] = fid
[0];
5070 nam
.nam$w_fid
[1] = fid
[1];
5071 nam
.nam$w_fid
[2] = fid
[2];
5073 nam
.nam$l_esa
= nam
.nam$l_name
;
5074 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5076 status
= SYS$
ENTER (&fab
);
5077 if ((status
& 1) == 0)
5080 vaxc$errno
= status
;
5091 printf ("%s not yet implemented\r\n", badfunc
);
5099 /* Arrange to return a range centered on zero. */
5100 return rand () - (1 << 30);
5112 /* Called from init_sys_modes. */
5118 /* If we're not on an HFT we shouldn't do any of this. We determine
5119 if we are on an HFT by trying to get an HFT error code. If this
5120 call fails, we're not on an HFT. */
5122 if (ioctl (0, HFQERROR
, &junk
) < 0)
5124 #else /* not IBMR2AIX */
5125 if (ioctl (0, HFQEIO
, 0) < 0)
5127 #endif /* not IBMR2AIX */
5129 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5130 as the rubout key's ASCII code. Here this is changed. The bug is that
5131 there's no way to determine the old mapping, so in reset_sys_modes
5132 we need to assume that the normal map had been present. Of course, this
5133 code also doesn't help if on a terminal emulator which doesn't understand
5137 struct hfkeymap keymap
;
5139 buf
.hf_bufp
= (char *)&keymap
;
5140 buf
.hf_buflen
= sizeof (keymap
);
5141 keymap
.hf_nkeys
= 2;
5142 keymap
.hfkey
[0].hf_kpos
= 15;
5143 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5145 keymap
.hfkey
[0].hf_keyidh
= '<';
5146 #else /* not IBMR2AIX */
5147 keymap
.hfkey
[0].hf_page
= '<';
5148 #endif /* not IBMR2AIX */
5149 keymap
.hfkey
[0].hf_char
= 127;
5150 keymap
.hfkey
[1].hf_kpos
= 15;
5151 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5153 keymap
.hfkey
[1].hf_keyidh
= '<';
5154 #else /* not IBMR2AIX */
5155 keymap
.hfkey
[1].hf_page
= '<';
5156 #endif /* not IBMR2AIX */
5157 keymap
.hfkey
[1].hf_char
= 127;
5158 hftctl (0, HFSKBD
, &buf
);
5160 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
5162 line_ins_del_ok
= char_ins_del_ok
= 0;
5165 /* Reset the rubout key to backspace. */
5171 struct hfkeymap keymap
;
5175 if (ioctl (0, HFQERROR
, &junk
) < 0)
5177 #else /* not IBMR2AIX */
5178 if (ioctl (0, HFQEIO
, 0) < 0)
5180 #endif /* not IBMR2AIX */
5182 buf
.hf_bufp
= (char *)&keymap
;
5183 buf
.hf_buflen
= sizeof (keymap
);
5184 keymap
.hf_nkeys
= 2;
5185 keymap
.hfkey
[0].hf_kpos
= 15;
5186 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5188 keymap
.hfkey
[0].hf_keyidh
= '<';
5189 #else /* not IBMR2AIX */
5190 keymap
.hfkey
[0].hf_page
= '<';
5191 #endif /* not IBMR2AIX */
5192 keymap
.hfkey
[0].hf_char
= 8;
5193 keymap
.hfkey
[1].hf_kpos
= 15;
5194 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5196 keymap
.hfkey
[1].hf_keyidh
= '<';
5197 #else /* not IBMR2AIX */
5198 keymap
.hfkey
[1].hf_page
= '<';
5199 #endif /* not IBMR2AIX */
5200 keymap
.hfkey
[1].hf_char
= 8;
5201 hftctl (0, HFSKBD
, &buf
);
5208 /* These are included on Sunos 4.1 when we do not use shared libraries.
5209 X11 libraries may refer to these functions but (we hope) do not
5210 actually call them. */
5230 #endif /* USE_DL_STUBS */
5239 register int length
;
5243 long max_str
= 65535;
5245 while (length
> max_str
) {
5246 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5251 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5253 while (length
-- > 0)
5255 #endif /* not VMS */
5258 #endif /* no bzero */
5259 #endif /* BSTRING */
5261 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5264 /* Saying `void' requires a declaration, above, where bcopy is used
5265 and that declaration causes pain for systems where bcopy is a macro. */
5266 bcopy (b1
, b2
, length
)
5269 register int length
;
5272 long max_str
= 65535;
5274 while (length
> max_str
) {
5275 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5281 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5283 while (length
-- > 0)
5285 #endif /* not VMS */
5287 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5292 bcmp (b1
, b2
, length
) /* This could be a macro! */
5295 register int length
;
5298 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5299 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5301 return STR$
COMPARE (&src1
, &src2
);
5303 while (length
-- > 0)
5308 #endif /* not VMS */
5310 #endif /* no bcmp */
5311 #endif /* not BSTRING */
5313 #ifndef HAVE_STRSIGNAL
5320 if (0 <= code
&& code
< NSIG
)
5323 signame
= sys_errlist
[code
];
5325 /* Cast to suppress warning if the table has const char *. */
5326 signame
= (char *) sys_siglist
[code
];
5332 #endif /* HAVE_STRSIGNAL */