1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86,87,88,93,94,95,1999,2000,01,2003
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. */
33 /* Including stdlib.h isn't necessarily enough to get srandom
34 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
36 #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets
37 random prototyped as returning `int'. It looks to me as
38 though the best way to DTRT is to prefer the rand48 functions
39 (per libc.info). -- fx */
40 extern long int random
P_ ((void));
42 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
43 some systems, and an unsigned long on others, like FreeBSD
45 extern void srandom
P_ ((unsigned int));
49 #include "blockinput.h"
53 /* It is essential to include stdlib.h so that this file picks up
54 the correct definitions of rand, srand, and RAND_MAX.
55 Otherwise random numbers will not work correctly. */
59 /* Nonzero means delete a process right away if it exits (process.c). */
60 static int delete_exited_processes
;
66 #define write sys_write
71 #endif /* not WINDOWSNT */
73 /* Does anyone other than VMS need this? */
75 #define sys_fwrite fwrite
80 #include <sys/types.h>
85 #if !defined (USG) || defined (BSD_PGRPS)
87 #define setpgrp setpgid
91 /* Get SI_SRPC_DOMAIN, if it is available. */
92 #ifdef HAVE_SYS_SYSTEMINFO_H
93 #include <sys/systeminfo.h>
96 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
100 #include <sys/param.h>
104 extern unsigned start
__asm__ ("start");
126 #include <sys/file.h>
134 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
138 #include <sys/file.h>
146 #include <sys/ioctl.h>
152 #ifdef BROKEN_TIOCGWINSZ
157 #if defined (USG) || defined (DGUX)
158 #include <sys/utsname.h>
159 #ifndef MEMORY_IN_STRING_H
162 #if defined (TIOCGWINSZ) || defined (ISC4_0)
164 #include <sys/sioctl.h>
167 #include <sys/stream.h>
168 #include <sys/ptem.h>
170 #endif /* TIOCGWINSZ or ISC4_0 */
171 #endif /* USG or DGUX */
173 extern int quit_char
;
175 #include "keyboard.h"
178 #include "termhooks.h"
179 #include "termchar.h"
180 #include "termopts.h"
181 #include "dispextern.h"
186 /* In process.h which conflicts with the local copy. */
188 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
189 int _CRTAPI1
_getpid (void);
192 #ifdef NONSYSTEM_DIR_LIBRARY
194 #endif /* NONSYSTEM_DIR_LIBRARY */
196 #include "syssignal.h"
203 #ifndef HAVE_STRUCT_UTIMBUF
204 /* We want to use utime rather than utimes, but we couldn't find the
205 structure declaration. We'll use the traditional one. */
213 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
219 #define LNOFLSH 0100000
222 static int baud_convert
[] =
227 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
228 1800, 2400, 4800, 9600, 19200, 38400
235 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
237 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
245 /* The file descriptor for Emacs's input terminal.
246 Under Unix, this is normally zero except when using X;
247 under VMS, we place the input channel number here. */
250 void croak
P_ ((char *));
257 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
259 SIGMASKTYPE sigprocmask_set
;
262 /* Specify a different file descriptor for further input operations. */
271 /* Discard pending input on descriptor input_fd. */
277 struct emacs_tty buf
;
282 /* Discarding input is not safe when the input could contain
283 replies from the X server. So don't do it. */
284 if (read_socket_hook
)
289 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
290 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
296 ioctl (input_fd
, TIOCFLUSH
, &zero
);
298 #else /* not Apollo */
299 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
300 while (dos_keyread () != -1)
302 #else /* not MSDOS */
303 EMACS_GET_TTY (input_fd
, &buf
);
304 EMACS_SET_TTY (input_fd
, &buf
, 0);
305 #endif /* not MSDOS */
306 #endif /* not Apollo */
308 #endif /* not WINDOWSNT */
313 /* Arrange for character C to be read as the next input from
324 if (read_socket_hook
)
327 /* Should perhaps error if in batch mode */
329 ioctl (input_fd
, TIOCSTI
, &c
);
330 #else /* no TIOCSTI */
331 error ("Cannot stuff terminal input characters in this version of Unix");
332 #endif /* no TIOCSTI */
344 #ifdef INIT_BAUD_RATE
349 #else /* not DOS_NT */
353 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
354 &sg
.class, 12, 0, 0, 0, 0 );
355 emacs_ospeed
= sg
.xmit_baud
;
361 tcgetattr (input_fd
, &sg
);
362 emacs_ospeed
= cfgetospeed (&sg
);
363 #if defined (USE_GETOBAUD) && defined (getobaud)
364 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
365 if (emacs_ospeed
== 0)
366 emacs_ospeed
= getobaud (sg
.c_cflag
);
368 #else /* neither VMS nor TERMIOS */
374 tcgetattr (input_fd
, &sg
);
376 ioctl (input_fd
, TCGETA
, &sg
);
378 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
379 #else /* neither VMS nor TERMIOS nor TERMIO */
382 sg
.sg_ospeed
= B9600
;
383 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
385 emacs_ospeed
= sg
.sg_ospeed
;
386 #endif /* not HAVE_TERMIO */
387 #endif /* not HAVE_TERMIOS */
389 #endif /* not DOS_NT */
390 #endif /* not INIT_BAUD_RATE */
393 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
394 ? baud_convert
[emacs_ospeed
] : 9600);
401 set_exclusive_use (fd
)
405 ioctl (fd
, FIOCLEX
, 0);
407 /* Ok to do nothing if this feature does not exist */
412 wait_without_blocking ()
415 wait3 (0, WNOHANG
| WUNTRACED
, 0);
417 croak ("wait_without_blocking");
419 synch_process_alive
= 0;
422 #endif /* not subprocesses */
424 int wait_debugging
; /* Set nonzero to make following function work under dbx
425 (at least for bsd). */
428 wait_for_termination_signal ()
431 /* Wait for subprocess with process id `pid' to terminate and
432 make sure it will get eliminated (not remain forever as a zombie) */
435 wait_for_termination (pid
)
444 status
= SYS$
FORCEX (&pid
, 0, 0);
447 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
448 /* Note that kill returns -1 even if the process is just a zombie now.
449 But inevitably a SIGCHLD interrupt should be generated
450 and child_sig will do wait3 and make the process go away. */
451 /* There is some indication that there is a bug involved with
452 termination of subprocesses, perhaps involving a kernel bug too,
453 but no idea what it is. Just as a hunch we signal SIGCHLD to see
454 if that causes the problem to go away or get worse. */
455 sigsetmask (sigmask (SIGCHLD
));
456 if (0 > kill (pid
, 0))
458 sigsetmask (SIGEMPTYMASK
);
459 kill (getpid (), SIGCHLD
);
465 sigpause (SIGEMPTYMASK
);
466 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
467 #if defined (UNIPLUS)
468 if (0 > kill (pid
, 0))
471 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
472 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
473 sigblock (sigmask (SIGCHLD
));
475 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
477 sigunblock (sigmask (SIGCHLD
));
481 sigsuspend (&empty_mask
);
482 #else /* not POSIX_SIGNALS */
483 #ifdef HAVE_SYSV_SIGPAUSE
485 if (0 > kill (pid
, 0))
491 #else /* not HAVE_SYSV_SIGPAUSE */
495 #else /* not WINDOWSNT */
496 if (0 > kill (pid
, 0))
498 /* Using sleep instead of pause avoids timing error.
499 If the inferior dies just before the sleep,
500 we lose just one second. */
502 #endif /* not WINDOWSNT */
503 #endif /* not HAVE_SYSV_SIGPAUSE */
504 #endif /* not POSIX_SIGNALS */
505 #endif /* not UNIPLUS */
506 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
508 #else /* not subprocesses */
511 #else /* not __DJGPP__ > 1 */
513 if (kill (pid
, 0) < 0)
519 if (status
== pid
|| status
== -1)
522 #endif /* not __DJGPP__ > 1*/
523 #endif /* not subprocesses */
530 * flush any pending output
531 * (may flush input as well; it does not matter the way we use it)
535 flush_pending_output (channel
)
539 /* If we try this, we get hit with SIGTTIN, because
540 the child's tty belongs to the child's pgrp. */
543 ioctl (channel
, TCFLSH
, 1);
547 /* 3rd arg should be ignored
548 but some 4.2 kernels actually want the address of an int
549 and nonzero means something different. */
550 ioctl (channel
, TIOCFLUSH
, &zero
);
557 /* Set up the terminal at the other end of a pseudo-terminal that
558 we will be controlling an inferior through.
559 It should not echo or do line-editing, since that is done
560 in Emacs. No padding needed for insertion into an Emacs buffer. */
563 child_setup_tty (out
)
569 EMACS_GET_TTY (out
, &s
);
571 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
572 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
573 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
575 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
576 /* No output delays */
578 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
579 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
580 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
581 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
582 #ifdef INLCR /* Just being cautious, since I can't check how
583 widespread INLCR is--rms. */
584 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
588 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
591 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
594 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
596 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
597 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
599 /* Said to be unnecessary: */
600 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
601 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
604 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
605 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
606 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
607 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
610 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
613 #ifdef SIGNALS_VIA_CHARACTERS
614 /* the QUIT and INTR character are used in process_send_signal
615 so set them here to something useful. */
616 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
617 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
618 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
619 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
620 #endif /* not SIGNALS_VIA_CHARACTERS */
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 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
633 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
634 would force it to 0377. That looks like duplicated code. */
635 #ifndef SIGNALS_VIA_CHARACTERS
636 /* QUIT and INTR work better as signals, so disable character forms */
637 s
.main
.c_cc
[VQUIT
] = CDISABLE
;
638 s
.main
.c_cc
[VINTR
] = CDISABLE
;
639 s
.main
.c_lflag
&= ~ISIG
;
640 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
641 s
.main
.c_cc
[VEOL
] = CDISABLE
;
642 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
645 #else /* not HAVE_TERMIO */
647 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
649 s
.main
.sg_flags
|= LPASS8
;
650 s
.main
.sg_erase
= 0377;
651 s
.main
.sg_kill
= 0377;
652 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
654 #endif /* not HAVE_TERMIO */
656 EMACS_SET_TTY (out
, &s
, 0);
665 ioctl (out
, FIOASYNC
, &zero
);
668 #endif /* not DOS_NT */
672 #endif /* subprocesses */
674 /* Record a signal code and the handler for it. */
678 SIGTYPE (*handler
) P_ ((int));
681 static void save_signal_handlers
P_ ((struct save_signal
*));
682 static void restore_signal_handlers
P_ ((struct save_signal
*));
684 /* Suspend the Emacs process; give terminal to its superior. */
690 /* "Foster" parentage allows emacs to return to a subprocess that attached
691 to the current emacs as a cheaper than starting a whole new process. This
692 is set up by KEPTEDITOR.COM. */
693 unsigned long parent_id
, foster_parent_id
;
696 fpid_string
= getenv ("EMACS_PARENT_PID");
697 if (fpid_string
!= NULL
)
699 sscanf (fpid_string
, "%x", &foster_parent_id
);
700 if (foster_parent_id
!= 0)
701 parent_id
= foster_parent_id
;
703 parent_id
= getppid ();
706 parent_id
= getppid ();
708 xfree (fpid_string
); /* On VMS, this was malloc'd */
710 if (parent_id
&& parent_id
!= 0xffffffff)
712 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
713 int status
= LIB$
ATTACH (&parent_id
) & 1;
714 signal (SIGINT
, oldsig
);
723 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
724 d_prompt
.a
= "Emacs: "; /* Just a reminder */
725 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
730 #if defined (SIGTSTP) && !defined (MSDOS)
733 int pgrp
= EMACS_GETPGRP (0);
734 EMACS_KILLPG (pgrp
, SIGTSTP
);
737 #else /* No SIGTSTP */
738 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
739 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
740 kill (getpid (), SIGQUIT
);
742 #else /* No SIGTSTP or USG_JOBCTRL */
744 /* On a system where suspending is not implemented,
745 instead fork a subshell and let it talk directly to the terminal
749 #endif /* no USG_JOBCTRL */
750 #endif /* no SIGTSTP */
754 /* Fork a subshell. */
761 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
763 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
766 struct save_signal saved_handlers
[5];
768 unsigned char *str
= 0;
771 saved_handlers
[0].code
= SIGINT
;
772 saved_handlers
[1].code
= SIGQUIT
;
773 saved_handlers
[2].code
= SIGTERM
;
775 saved_handlers
[3].code
= SIGIO
;
776 saved_handlers
[4].code
= 0;
778 saved_handlers
[3].code
= 0;
781 /* Mentioning current_buffer->buffer would mean including buffer.h,
782 which somehow wedges the hp compiler. So instead... */
784 dir
= intern ("default-directory");
785 if (NILP (Fboundp (dir
)))
787 dir
= Fsymbol_value (dir
);
791 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
792 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
794 bcopy (SDATA (dir
), str
, len
);
795 if (str
[len
- 1] != '/') str
[len
++] = '/';
802 save_signal_handlers (saved_handlers
);
803 synch_process_alive
= 1;
804 #endif /* __DJGPP__ > 1 */
808 error ("Can't spawn subshell");
815 #ifdef DOS_NT /* MW, Aug 1993 */
818 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
821 sh
= (char *) egetenv ("SHELL");
825 /* Use our buffer's default directory for the subshell. */
827 chdir ((char *) str
);
830 close_process_descs (); /* Close Emacs's pipes/ptys */
833 #ifdef SET_EMACS_PRIORITY
835 extern EMACS_INT emacs_priority
;
837 if (emacs_priority
< 0)
838 nice (-emacs_priority
);
842 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
844 char *epwd
= getenv ("PWD");
845 char old_pwd
[MAXPATHLEN
+1+4];
847 /* If PWD is set, pass it with corrected value. */
850 strcpy (old_pwd
, epwd
);
851 if (str
[len
- 1] == '/')
853 setenv ("PWD", str
, 1);
858 putenv (old_pwd
); /* restore previous value */
860 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
862 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
864 #else /* not MSDOS */
866 /* Waits for process completion */
867 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
870 write (1, "Can't execute subshell", 22);
871 #else /* not WINDOWSNT */
873 write (1, "Can't execute subshell", 22);
875 #endif /* not WINDOWSNT */
876 #endif /* not MSDOS */
879 /* Do this now if we did not do it before. */
880 #if !defined (MSDOS) || __DJGPP__ == 1
881 save_signal_handlers (saved_handlers
);
882 synch_process_alive
= 1;
886 wait_for_termination (pid
);
888 restore_signal_handlers (saved_handlers
);
889 synch_process_alive
= 0;
892 #endif /* !MAC_OS8 */
895 save_signal_handlers (saved_handlers
)
896 struct save_signal
*saved_handlers
;
898 while (saved_handlers
->code
)
900 saved_handlers
->handler
901 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
907 restore_signal_handlers (saved_handlers
)
908 struct save_signal
*saved_handlers
;
910 while (saved_handlers
->code
)
912 signal (saved_handlers
->code
, saved_handlers
->handler
);
926 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
927 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
929 interrupts_deferred
= 0;
938 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
943 if (read_socket_hook
)
947 sigunblock (sigmask (SIGWINCH
));
949 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
951 interrupts_deferred
= 0;
957 if (read_socket_hook
)
961 sigblock (sigmask (SIGWINCH
));
963 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
964 interrupts_deferred
= 1;
967 #else /* no FASYNC */
968 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
975 if (read_socket_hook
)
978 ioctl (input_fd
, FIOASYNC
, &on
);
979 interrupts_deferred
= 0;
987 if (read_socket_hook
)
990 ioctl (input_fd
, FIOASYNC
, &off
);
991 interrupts_deferred
= 1;
994 #else /* not FASYNC, not STRIDE */
1006 if (read_socket_hook
)
1010 sigaddset (&st
, SIGIO
);
1011 ioctl (input_fd
, FIOASYNC
, &on
);
1012 interrupts_deferred
= 0;
1013 sigprocmask (SIG_UNBLOCK
, &st
, (sigset_t
*)0);
1021 if (read_socket_hook
)
1024 ioctl (input_fd
, FIOASYNC
, &off
);
1025 interrupts_deferred
= 1;
1028 #else /* ! _CX_UX */
1034 if (read_socket_hook
)
1037 croak ("request_sigio");
1043 if (read_socket_hook
)
1046 croak ("unrequest_sigio");
1053 #endif /* F_SETFL */
1055 /* Saving and restoring the process group of Emacs's terminal. */
1059 /* The process group of which Emacs was a member when it initially
1062 If Emacs was in its own process group (i.e. inherited_pgroup ==
1063 getpid ()), then we know we're running under a shell with job
1064 control (Emacs would never be run as part of a pipeline).
1067 If Emacs was not in its own process group, then we know we're
1068 running under a shell (or a caller) that doesn't know how to
1069 separate itself from Emacs (like sh). Emacs must be in its own
1070 process group in order to receive SIGIO correctly. In this
1071 situation, we put ourselves in our own pgroup, forcibly set the
1072 tty's pgroup to our pgroup, and make sure to restore and reinstate
1073 the tty's pgroup just like any other terminal setting. If
1074 inherited_group was not the tty's pgroup, then we'll get a
1075 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1076 it goes foreground in the future, which is what should happen. */
1077 int inherited_pgroup
;
1079 /* Split off the foreground process group to Emacs alone.
1080 When we are in the foreground, but not started in our own process
1081 group, redirect the TTY to point to our own process group. We need
1082 to be in our own process group to receive SIGIO properly. */
1084 narrow_foreground_group ()
1088 setpgrp (0, inherited_pgroup
);
1089 if (inherited_pgroup
!= me
)
1090 EMACS_SET_TTY_PGRP (input_fd
, &me
);
1094 /* Set the tty to our original foreground group. */
1096 widen_foreground_group ()
1098 if (inherited_pgroup
!= getpid ())
1099 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
1100 setpgrp (0, inherited_pgroup
);
1103 #endif /* BSD_PGRPS */
1105 /* Getting and setting emacs_tty structures. */
1107 /* Set *TC to the parameters associated with the terminal FD.
1108 Return zero if all's well, or -1 if we ran into an error we
1109 couldn't deal with. */
1111 emacs_get_tty (fd
, settings
)
1113 struct emacs_tty
*settings
;
1115 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1117 /* We have those nifty POSIX tcmumbleattr functions. */
1118 bzero (&settings
->main
, sizeof (settings
->main
));
1119 if (tcgetattr (fd
, &settings
->main
) < 0)
1124 /* The SYSV-style interface? */
1125 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1130 /* Vehemently Monstrous System? :-) */
1131 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1132 &settings
->main
.class, 12, 0, 0, 0, 0)
1138 /* I give up - I hope you have the BSD ioctls. */
1139 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1141 #endif /* not DOS_NT */
1146 /* Suivant - Do we have to get struct ltchars data? */
1148 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1152 /* How about a struct tchars and a wordful of lmode bits? */
1154 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1155 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1159 /* We have survived the tempest. */
1164 /* Set the parameters of the tty on FD according to the contents of
1165 *SETTINGS. If FLUSHP is non-zero, we discard input.
1166 Return 0 if all went well, and -1 if anything failed. */
1169 emacs_set_tty (fd
, settings
, flushp
)
1171 struct emacs_tty
*settings
;
1174 /* Set the primary parameters - baud rate, character size, etcetera. */
1177 /* We have those nifty POSIX tcmumbleattr functions.
1178 William J. Smith <wjs@wiis.wang.com> writes:
1179 "POSIX 1003.1 defines tcsetattr to return success if it was
1180 able to perform any of the requested actions, even if some
1181 of the requested actions could not be performed.
1182 We must read settings back to ensure tty setup properly.
1183 AIX requires this to keep tty from hanging occasionally." */
1184 /* This make sure that we don't loop indefinitely in here. */
1185 for (i
= 0 ; i
< 10 ; i
++)
1186 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1197 bzero (&new, sizeof (new));
1198 /* Get the current settings, and see if they're what we asked for. */
1199 tcgetattr (fd
, &new);
1200 /* We cannot use memcmp on the whole structure here because under
1201 * aix386 the termios structure has some reserved field that may
1204 if ( new.c_iflag
== settings
->main
.c_iflag
1205 && new.c_oflag
== settings
->main
.c_oflag
1206 && new.c_cflag
== settings
->main
.c_cflag
1207 && new.c_lflag
== settings
->main
.c_lflag
1208 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1216 /* The SYSV-style interface? */
1217 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1222 /* Vehemently Monstrous System? :-) */
1223 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1224 &settings
->main
.class, 12, 0, 0, 0, 0)
1230 /* I give up - I hope you have the BSD ioctls. */
1231 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1233 #endif /* not DOS_NT */
1239 /* Suivant - Do we have to get struct ltchars data? */
1241 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1245 /* How about a struct tchars and a wordful of lmode bits? */
1247 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1248 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1252 /* We have survived the tempest. */
1257 /* The initial tty mode bits */
1258 struct emacs_tty old_tty
;
1260 /* 1 if we have been through init_sys_modes. */
1263 /* 1 if outer tty status has been recorded. */
1267 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1272 #ifndef F_SETOWN_BUG
1274 int old_fcntl_owner
;
1275 #endif /* F_SETOWN */
1276 #endif /* F_SETOWN_BUG */
1278 /* This may also be defined in stdio,
1279 but if so, this does no harm,
1280 and using the same name avoids wasting the other one's space. */
1283 extern char *_sobuf
;
1285 #if defined (USG) || defined (DGUX)
1286 unsigned char _sobuf
[BUFSIZ
+8];
1288 char _sobuf
[BUFSIZ
];
1293 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1296 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1302 struct emacs_tty tty
;
1305 /* cus-start.el complains if delete-exited-processes is not defined */
1306 #ifndef subprocesses
1307 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
1308 doc
: /* *Non-nil means delete processes immediately when they exit.
1309 nil means don't delete them until `list-processes' is run. */);
1310 delete_exited_processes
= 0;
1312 #endif /* MAC_OS8 */
1316 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1317 extern int (*interrupt_signal
) ();
1321 Vtty_erase_char
= Qnil
;
1328 input_ef
= get_kbd_event_flag ();
1329 /* LIB$GET_EF (&input_ef); */
1330 SYS$
CLREF (input_ef
);
1331 waiting_for_ast
= 0;
1333 timer_ef
= get_timer_event_flag ();
1334 /* LIB$GET_EF (&timer_ef); */
1335 SYS$
CLREF (timer_ef
);
1339 LIB$
GET_EF (&process_ef
);
1340 SYS$
CLREF (process_ef
);
1342 if (input_ef
/ 32 != process_ef
/ 32)
1343 croak ("Input and process event flags in different clusters.");
1345 if (input_ef
/ 32 != timer_ef
/ 32)
1346 croak ("Input and timer event flags in different clusters.");
1348 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1349 ((unsigned) 1 << (process_ef
% 32));
1351 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1352 ((unsigned) 1 << (timer_ef
% 32));
1354 sys_access_reinit ();
1356 #endif /* not VMS */
1359 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1360 narrow_foreground_group ();
1363 #ifdef HAVE_WINDOW_SYSTEM
1364 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1365 needs the initialization code below. */
1366 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1369 EMACS_GET_TTY (input_fd
, &old_tty
);
1375 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1376 XSETINT (Vtty_erase_char
, old_tty
.main
.c_cc
[VERASE
]);
1379 /* This allows meta to be sent on 8th bit. */
1380 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1382 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1383 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1384 #ifdef INLCR /* I'm just being cautious,
1385 since I can't check how widespread INLCR is--rms. */
1386 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1389 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1391 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1392 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1394 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1396 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1399 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1401 tty
.main
.c_iflag
&= ~IXANY
;
1405 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1406 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1408 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1412 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1413 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1416 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1417 /* Set up C-g for both SIGQUIT and SIGINT.
1418 We don't know which we will get, but we handle both alike
1419 so which one it really gives us does not matter. */
1420 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1421 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1422 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1424 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1428 #if defined (mips) || defined (HAVE_TCATTR)
1430 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1433 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1434 #endif /* V_DSUSP */
1435 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1436 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1439 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1442 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1443 #endif /* VREPRINT */
1445 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1446 #endif /* VWERASE */
1448 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1449 #endif /* VDISCARD */
1454 tty
.main
.c_cc
[VSTART
] = '\021';
1457 tty
.main
.c_cc
[VSTOP
] = '\023';
1463 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1466 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1469 #endif /* mips or HAVE_TCATTR */
1471 #ifdef SET_LINE_DISCIPLINE
1472 /* Need to explicitly request TERMIODISC line discipline or
1473 Ultrix's termios does not work correctly. */
1474 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1478 /* AIX enhanced edit loses NULs, so disable it. */
1479 tty
.main
.c_line
= 0;
1480 tty
.main
.c_iflag
&= ~ASCEDIT
;
1482 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1483 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1484 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1485 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1486 #endif /* IBMR2AIX */
1490 tty
.main
.c_cc
[VSTART
] = '\021';
1493 tty
.main
.c_cc
[VSTOP
] = '\023';
1496 /* Also, PTY overloads NUL and BREAK.
1497 don't ignore break, but don't signal either, so it looks like NUL.
1498 This really serves a purpose only if running in an XTERM window
1499 or via TELNET or the like, but does no harm elsewhere. */
1500 tty
.main
.c_iflag
&= ~IGNBRK
;
1501 tty
.main
.c_iflag
&= ~BRKINT
;
1503 #else /* if not HAVE_TERMIO */
1505 tty
.main
.tt_char
|= TT$M_NOECHO
;
1507 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1509 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1511 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1512 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1513 #else /* not VMS (BSD, that is) */
1515 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1516 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1518 tty
.main
.sg_flags
|= ANYP
;
1519 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1520 #endif /* not DOS_NT */
1521 #endif /* not VMS (BSD, that is) */
1522 #endif /* not HAVE_TERMIO */
1524 /* If going to use CBREAK mode, we must request C-g to interrupt
1525 and turn off start and stop chars, etc. If not going to use
1526 CBREAK mode, do this anyway so as to turn off local flow
1527 control for user coming over network on 4.2; in this case,
1528 only t_stopc and t_startc really matter. */
1531 /* Note: if not using CBREAK mode, it makes no difference how we
1533 tty
.tchars
= new_tchars
;
1534 tty
.tchars
.t_intrc
= quit_char
;
1537 tty
.tchars
.t_startc
= '\021';
1538 tty
.tchars
.t_stopc
= '\023';
1541 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1543 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1544 anything, and leaving it in breaks the meta key. Go figure. */
1545 tty
.lmode
&= ~LLITOUT
;
1552 #endif /* HAVE_TCHARS */
1553 #endif /* not HAVE_TERMIO */
1556 tty
.ltchars
= new_ltchars
;
1557 #endif /* HAVE_LTCHARS */
1558 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1560 internal_terminal_init ();
1564 EMACS_SET_TTY (input_fd
, &tty
, 0);
1566 /* This code added to insure that, if flow-control is not to be used,
1567 we have an unlocked terminal at the start. */
1570 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1574 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1578 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1580 if (!flow_control
) tcflow (input_fd
, TCOON
);
1588 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1589 to be only LF. This is the way that is done. */
1592 if (ioctl (1, HFTGETID
, &tty
) != -1)
1593 write (1, "\033[20l", 5);
1599 /* Appears to do nothing when in PASTHRU mode.
1600 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1601 interrupt_signal, oob_chars, 0, 0, 0, 0);
1603 queue_kbd_input (0);
1608 #ifndef F_SETOWN_BUG
1609 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1611 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1613 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1614 fcntl (input_fd
, F_SETOWN
, getpid ());
1615 init_sigio (input_fd
);
1617 #endif /* F_GETOWN */
1618 #endif /* F_SETOWN_BUG */
1619 #endif /* F_SETFL */
1622 if (interrupt_input
)
1623 init_sigio (input_fd
);
1626 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1630 /* This symbol is defined on recent USG systems.
1631 Someone says without this call USG won't really buffer the file
1632 even with a call to setbuf. */
1633 setvbuf (stdout
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1635 setbuf (stdout
, (char *) _sobuf
);
1637 #ifdef HAVE_WINDOW_SYSTEM
1638 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1639 needs the initialization code below. */
1640 if (EQ (Vwindow_system
, Qnil
)
1642 /* When running in tty mode on NT/Win95, we have a read_socket
1643 hook, but still need the rest of the initialization code below. */
1644 && (! read_socket_hook
)
1648 set_terminal_modes ();
1651 && FRAMEP (Vterminal_frame
)
1652 && FRAME_TERMCAP_P (XFRAME (Vterminal_frame
)))
1653 init_frame_faces (XFRAME (Vterminal_frame
));
1655 if (term_initted
&& no_redraw_on_reenter
)
1657 if (display_completed
)
1658 direct_output_forward_char (0);
1663 if (FRAMEP (Vterminal_frame
))
1664 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1670 /* Return nonzero if safe to use tabs in output.
1671 At the time this is called, init_sys_modes has not been done yet. */
1676 struct emacs_tty tty
;
1678 EMACS_GET_TTY (input_fd
, &tty
);
1679 return EMACS_TTY_TABS_OK (&tty
);
1682 /* Get terminal size from system.
1683 Store number of lines into *HEIGHTP and width into *WIDTHP.
1684 We store 0 if there's no valid information. */
1687 get_frame_size (widthp
, heightp
)
1688 int *widthp
, *heightp
;
1694 struct winsize size
;
1696 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1697 *widthp
= *heightp
= 0;
1700 *widthp
= size
.ws_col
;
1701 *heightp
= size
.ws_row
;
1707 /* SunOS - style. */
1708 struct ttysize size
;
1710 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1711 *widthp
= *heightp
= 0;
1714 *widthp
= size
.ts_cols
;
1715 *heightp
= size
.ts_lines
;
1721 struct sensemode tty
;
1723 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1724 &tty
.class, 12, 0, 0, 0, 0);
1725 *widthp
= tty
.scr_wid
;
1726 *heightp
= tty
.scr_len
;
1730 *widthp
= ScreenCols ();
1731 *heightp
= ScreenRows ();
1732 #else /* system doesn't know size */
1737 #endif /* not VMS */
1738 #endif /* not SunOS-style */
1739 #endif /* not BSD-style */
1742 /* Set the logical window size associated with descriptor FD
1743 to HEIGHT and WIDTH. This is used mainly with ptys. */
1746 set_window_size (fd
, height
, width
)
1747 int fd
, height
, width
;
1752 struct winsize size
;
1753 size
.ws_row
= height
;
1754 size
.ws_col
= width
;
1756 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1757 return 0; /* error */
1764 /* SunOS - style. */
1765 struct ttysize size
;
1766 size
.ts_lines
= height
;
1767 size
.ts_cols
= width
;
1769 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1775 #endif /* not SunOS-style */
1776 #endif /* not BSD-style */
1780 /* Prepare the terminal for exiting Emacs; move the cursor to the
1781 bottom of the frame, turn off interrupt-driven I/O, etc. */
1794 #ifdef HAVE_WINDOW_SYSTEM
1795 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1796 needs the clean-up code below. */
1797 if (!EQ (Vwindow_system
, Qnil
)
1799 /* When running in tty mode on NT/Win95, we have a read_socket
1800 hook, but still need the rest of the clean-up code below. */
1806 sf
= SELECTED_FRAME ();
1807 cursor_to (FRAME_LINES (sf
) - 1, 0);
1808 clear_end_of_line (FRAME_COLS (sf
));
1809 /* clear_end_of_line may move the cursor */
1810 cursor_to (FRAME_LINES (sf
) - 1, 0);
1811 #if defined (IBMR2AIX) && defined (AIXHFT)
1813 /* HFT devices normally use ^J as a LF/CR. We forced it to
1814 do the LF only. Now, we need to reset it. */
1817 if (ioctl (1, HFTGETID
, &tty
) != -1)
1818 write (1, "\033[20h", 5);
1822 reset_terminal_modes ();
1826 /* Avoid possible loss of output when changing terminal modes. */
1827 fsync (fileno (stdout
));
1832 #ifndef F_SETOWN_BUG
1833 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1834 if (interrupt_input
)
1837 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1839 #endif /* F_SETOWN */
1840 #endif /* F_SETOWN_BUG */
1842 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1844 #endif /* F_SETFL */
1846 if (interrupt_input
)
1851 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1854 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1858 #ifdef SET_LINE_DISCIPLINE
1859 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1860 A different old line discipline is therefore not restored, yet.
1861 Restore the old line discipline by hand. */
1862 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1870 widen_foreground_group ();
1876 /* Set up the proper status flags for use of a pty. */
1882 /* I'm told that TOICREMOTE does not mean control chars
1883 "can't be sent" but rather that they don't have
1884 input-editing or signaling effects.
1885 That should be good, because we have other ways
1886 to do those things in Emacs.
1887 However, telnet mode seems not to work on 4.2.
1888 So TIOCREMOTE is turned off now. */
1890 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1891 will hang. In particular, the "timeout" feature (which
1892 causes a read to return if there is no data available)
1893 does this. Also it is known that telnet mode will hang
1894 in such a way that Emacs must be stopped (perhaps this
1895 is the same problem).
1897 If TIOCREMOTE is turned off, then there is a bug in
1898 hp-ux which sometimes loses data. Apparently the
1899 code which blocks the master process when the internal
1900 buffer fills up does not work. Other than this,
1901 though, everything else seems to work fine.
1903 Since the latter lossage is more benign, we may as well
1904 lose that way. -- cph */
1906 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1909 ioctl (fd
, FIONBIO
, &on
);
1914 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1915 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1916 /* cause EMACS not to die when it should, i.e., when its own controlling */
1917 /* tty goes away. I've complained to the AIX developers, and they may */
1918 /* change this behavior, but I'm not going to hold my breath. */
1919 signal (SIGHUP
, SIG_IGN
);
1922 #endif /* HAVE_PTYS */
1926 /* Assigning an input channel is done at the start of Emacs execution.
1927 This is called each time Emacs is resumed, also, but does nothing
1928 because input_chain is no longer zero. */
1937 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1943 /* Deassigning the input channel is done before exiting. */
1948 return SYS$
DASSGN (input_fd
);
1953 /* Request reading one character into the keyboard buffer.
1954 This is done as soon as the buffer becomes empty. */
1960 extern kbd_input_ast ();
1962 waiting_for_ast
= 0;
1964 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1965 &input_iosb
, kbd_input_ast
, 1,
1966 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1971 /* Ast routine that is called when keyboard input comes in
1972 in accord with the SYS$QIO above. */
1977 register int c
= -1;
1978 int old_errno
= errno
;
1979 extern EMACS_TIME
*input_available_clear_time
;
1981 if (waiting_for_ast
)
1982 SYS$
SETEF (input_ef
);
1983 waiting_for_ast
= 0;
1986 if (input_count
== 25)
1988 printf ("Ast # %d,", input_count
);
1989 printf (" iosb = %x, %x, %x, %x",
1990 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1993 if (input_iosb
.offset
)
1997 printf (", char = 0%o", c
);
2009 struct input_event e
;
2012 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2013 XSETINT (e
.code
, c
);
2014 e
.frame_or_window
= selected_frame
;
2015 kbd_buffer_store_event (&e
);
2017 if (input_available_clear_time
)
2018 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2022 /* Wait until there is something in kbd_buffer. */
2025 wait_for_kbd_input ()
2027 extern int have_process_input
, process_exited
;
2029 /* If already something, avoid doing system calls. */
2030 if (detect_input_pending ())
2034 /* Clear a flag, and tell ast routine above to set it. */
2035 SYS$
CLREF (input_ef
);
2036 waiting_for_ast
= 1;
2037 /* Check for timing error: ast happened while we were doing that. */
2038 if (!detect_input_pending ())
2040 /* No timing error: wait for flag to be set. */
2041 set_waiting_for_input (0);
2042 SYS$
WFLOR (input_ef
, input_eflist
);
2043 clear_waiting_for_input ();
2044 if (!detect_input_pending ())
2045 /* Check for subprocess input availability */
2047 int dsp
= have_process_input
|| process_exited
;
2049 SYS$
CLREF (process_ef
);
2050 if (have_process_input
)
2051 process_command_input ();
2056 update_mode_lines
++;
2057 prepare_menu_bars ();
2058 redisplay_preserve_echo_area (18);
2062 waiting_for_ast
= 0;
2065 /* Get rid of any pending QIO, when we are about to suspend
2066 or when we want to throw away pending input.
2067 We wait for a positive sign that the AST routine has run
2068 and therefore there is no I/O request queued when we return.
2069 SYS$SETAST is used to avoid a timing error. */
2075 printf ("At end_kbd_input.\n");
2079 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2081 SYS$
CANCEL (input_fd
);
2086 /* Clear a flag, and tell ast routine above to set it. */
2087 SYS$
CLREF (input_ef
);
2088 waiting_for_ast
= 1;
2090 SYS$
CANCEL (input_fd
);
2092 SYS$
WAITFR (input_ef
);
2093 waiting_for_ast
= 0;
2096 /* Wait for either input available or time interval expiry. */
2099 input_wait_timeout (timeval
)
2100 int timeval
; /* Time to wait, in seconds */
2103 static int zero
= 0;
2104 static int large
= -10000000;
2106 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2108 /* If already something, avoid doing system calls. */
2109 if (detect_input_pending ())
2113 /* Clear a flag, and tell ast routine above to set it. */
2114 SYS$
CLREF (input_ef
);
2115 waiting_for_ast
= 1;
2116 /* Check for timing error: ast happened while we were doing that. */
2117 if (!detect_input_pending ())
2119 /* No timing error: wait for flag to be set. */
2121 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2122 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2124 waiting_for_ast
= 0;
2127 /* The standard `sleep' routine works some other way
2128 and it stops working if you have ever quit out of it.
2129 This one continues to work. */
2135 static int zero
= 0;
2136 static int large
= -10000000;
2138 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2141 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2142 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2160 croak ("request sigio");
2166 croak ("unrequest sigio");
2171 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2176 #ifndef SYSTEM_MALLOC
2183 /* Some systems that cannot dump also cannot implement these. */
2186 * Return the address of the start of the text segment prior to
2187 * doing an unexec. After unexec the return value is undefined.
2188 * See crt0.c for further explanation and _start.
2192 #if !(defined (__NetBSD__) && defined (__ELF__))
2193 #ifndef HAVE_TEXT_START
2198 return ((char *) TEXT_START
);
2202 return ((char *) csrt
);
2203 #else /* not GOULD */
2204 extern int _start ();
2205 return ((char *) _start
);
2207 #endif /* TEXT_START */
2209 #endif /* not HAVE_TEXT_START */
2213 * Return the address of the start of the data segment prior to
2214 * doing an unexec. After unexec the return value is undefined.
2215 * See crt0.c for further information and definition of data_start.
2217 * Apparently, on BSD systems this is etext at startup. On
2218 * USG systems (swapping) this is highly mmu dependent and
2219 * is also dependent on whether or not the program is running
2220 * with shared text. Generally there is a (possibly large)
2221 * gap between end of text and start of data with shared text.
2223 * On Uniplus+ systems with shared text, data starts at a
2224 * fixed address. Each port (from a given oem) is generally
2225 * different, and the specific value of the start of data can
2226 * be obtained via the UniPlus+ specific "uvar" system call,
2227 * however the method outlined in crt0.c seems to be more portable.
2229 * Probably what will have to happen when a USG unexec is available,
2230 * at least on UniPlus, is temacs will have to be made unshared so
2231 * that text and data are contiguous. Then once loadup is complete,
2232 * unexec will produce a shared executable where the data can be
2233 * at the normal shared text boundary and the startofdata variable
2234 * will be patched by unexec to the correct value.
2238 #ifndef start_of_data
2243 return ((char *) DATA_START
);
2245 #ifdef ORDINARY_LINK
2247 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2248 * data_start isn't defined. We take the address of environ, which
2249 * is known to live at or near the start of the system crt0.c, and
2250 * we don't sweat the handful of bytes that might lose.
2252 extern char **environ
;
2254 return ((char *) &environ
);
2256 extern int data_start
;
2257 return ((char *) &data_start
);
2258 #endif /* ORDINARY_LINK */
2259 #endif /* DATA_START */
2261 #endif /* start_of_data */
2262 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2264 /* init_system_name sets up the string for the Lisp function
2265 system-name to return. */
2271 extern Lisp_Object Vsystem_name
;
2276 #include <sys/socket.h>
2278 #endif /* HAVE_SOCKETS */
2279 #endif /* not VMS */
2280 #endif /* not BSD4_1 */
2283 #ifndef HAVE_H_ERRNO
2286 #endif /* TRY_AGAIN */
2292 Vsystem_name
= build_string (sysname
);
2296 if ((sp
= egetenv ("SYS$NODE")) == 0)
2297 Vsystem_name
= build_string ("vax-vms");
2298 else if ((end
= index (sp
, ':')) == 0)
2299 Vsystem_name
= build_string (sp
);
2301 Vsystem_name
= make_string (sp
, end
- sp
);
2303 #ifndef HAVE_GETHOSTNAME
2306 Vsystem_name
= build_string (uts
.nodename
);
2307 #else /* HAVE_GETHOSTNAME */
2308 unsigned int hostname_size
= 256;
2309 char *hostname
= (char *) alloca (hostname_size
);
2311 /* Try to get the host name; if the buffer is too short, try
2312 again. Apparently, the only indication gethostname gives of
2313 whether the buffer was large enough is the presence or absence
2314 of a '\0' in the string. Eech. */
2317 gethostname (hostname
, hostname_size
- 1);
2318 hostname
[hostname_size
- 1] = '\0';
2320 /* Was the buffer large enough for the '\0'? */
2321 if (strlen (hostname
) < hostname_size
- 1)
2324 hostname_size
<<= 1;
2325 hostname
= (char *) alloca (hostname_size
);
2328 /* Turn the hostname into the official, fully-qualified hostname.
2329 Don't do this if we're going to dump; this can confuse system
2330 libraries on some machines and make the dumped emacs core dump. */
2333 #endif /* not CANNOT_DUMP */
2334 if (! index (hostname
, '.'))
2338 for (count
= 0;; count
++)
2343 hp
= gethostbyname (hostname
);
2345 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2350 Fsleep_for (make_number (1), Qnil
);
2354 char *fqdn
= (char *) hp
->h_name
;
2359 if (!index (fqdn
, '.'))
2361 /* We still don't have a fully qualified domain name.
2362 Try to find one in the list of alternate names */
2363 char **alias
= hp
->h_aliases
;
2364 while (*alias
&& !index (*alias
, '.'))
2371 /* Convert the host name to lower case. */
2372 /* Using ctype.h here would introduce a possible locale
2373 dependence that is probably wrong for hostnames. */
2377 if (*p
>= 'A' && *p
<= 'Z')
2384 #endif /* HAVE_SOCKETS */
2385 /* We used to try using getdomainname here,
2386 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2387 getdomainname gets the NIS/YP domain which often is not the same
2388 as in Internet domain name. */
2389 #if 0 /* Turned off because sysinfo is not really likely to return the
2390 correct Internet domain. */
2391 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2392 if (! index (hostname
, '.'))
2394 /* The hostname is not fully qualified. Append the domain name. */
2396 int hostlen
= strlen (hostname
);
2397 int domain_size
= 256;
2401 char *domain
= (char *) alloca (domain_size
+ 1);
2402 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2403 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2404 if (sys_domain_size
<= 0)
2406 if (domain_size
< sys_domain_size
)
2408 domain_size
= sys_domain_size
;
2411 strcpy (fqdn
, hostname
);
2412 if (domain
[0] == '.')
2413 strcpy (fqdn
+ hostlen
, domain
);
2414 else if (domain
[0] != 0)
2416 fqdn
[hostlen
] = '.';
2417 strcpy (fqdn
+ hostlen
+ 1, domain
);
2423 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2425 Vsystem_name
= build_string (hostname
);
2426 #endif /* HAVE_GETHOSTNAME */
2431 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2432 if (*p
== ' ' || *p
== '\t')
2439 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2441 #include "sysselect.h"
2444 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2445 /* Cause explanatory error message at compile time,
2446 since the select emulation is not good enough for X. */
2447 int *x
= &x_windows_lose_if_no_select_system_call
;
2450 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2451 * Only checks read descriptors.
2453 /* How long to wait between checking fds in select */
2454 #define SELECT_PAUSE 1
2457 /* For longjmp'ing back to read_input_waiting. */
2459 jmp_buf read_alarm_throw
;
2461 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2462 The read_socket_hook function sets this to 1 while it is waiting. */
2464 int read_alarm_should_throw
;
2472 #else /* not BSD4_1 */
2473 signal (SIGALRM
, SIG_IGN
);
2474 #endif /* not BSD4_1 */
2475 if (read_alarm_should_throw
)
2476 longjmp (read_alarm_throw
, 1);
2480 /* Only rfds are checked. */
2482 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2484 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2485 EMACS_TIME
*timeout
;
2491 extern int proc_buffered_char
[];
2492 #ifndef subprocesses
2493 int process_tick
= 0, update_tick
= 0;
2495 extern int process_tick
, update_tick
;
2499 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2500 /* If we're using X, then the native select will work; we only need the
2501 emulation for non-X usage. */
2502 if (!NILP (Vwindow_system
))
2503 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2505 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2506 local_timeout
= &timeoutval
;
2518 /* If we are looking only for the terminal, with no timeout,
2519 just read it and wait -- that's more efficient. */
2520 if (*local_timeout
== 100000 && process_tick
== update_tick
2521 && FD_ISSET (0, &orfds
))
2524 for (fd
= 1; fd
< nfds
; ++fd
)
2525 if (FD_ISSET (fd
, &orfds
))
2527 if (! detect_input_pending ())
2528 read_input_waiting ();
2534 /* Once a second, till the timer expires, check all the flagged read
2535 * descriptors to see if any input is available. If there is some then
2536 * set the corresponding bit in the return copy of rfds.
2540 register int to_check
, fd
;
2544 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2546 if (FD_ISSET (fd
, &orfds
))
2548 int avail
= 0, status
= 0;
2551 avail
= detect_input_pending (); /* Special keyboard handler */
2555 status
= ioctl (fd
, FIONREAD
, &avail
);
2556 #else /* no FIONREAD */
2557 /* Hoping it will return -1 if nothing available
2558 or 0 if all 0 chars requested are read. */
2559 if (proc_buffered_char
[fd
] >= 0)
2563 avail
= read (fd
, &buf
, 1);
2565 proc_buffered_char
[fd
] = buf
;
2567 #endif /* no FIONREAD */
2569 if (status
>= 0 && avail
> 0)
2577 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2580 turn_on_atimers (0);
2581 signal (SIGALRM
, select_alarm
);
2583 alarm (SELECT_PAUSE
);
2585 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2586 while (select_alarmed
== 0 && *local_timeout
!= 0
2587 && process_tick
== update_tick
)
2589 /* If we are interested in terminal input,
2590 wait by reading the terminal.
2591 That makes instant wakeup for terminal input at least. */
2592 if (FD_ISSET (0, &orfds
))
2594 read_input_waiting ();
2595 if (detect_input_pending ())
2601 (*local_timeout
) -= SELECT_PAUSE
;
2603 /* Reset the old alarm if there was one. */
2604 turn_on_atimers (1);
2606 if (*local_timeout
== 0) /* Stop on timer being cleared */
2611 #endif /* not WINDOWSNT */
2613 /* Read keyboard input into the standard buffer,
2614 waiting for at least one character. */
2617 read_input_waiting ()
2620 extern int quit_char
;
2622 if (read_socket_hook
)
2624 struct input_event hold_quit
;
2626 EVENT_INIT (hold_quit
);
2627 hold_quit
.kind
= NO_EVENT
;
2629 read_alarm_should_throw
= 0;
2630 if (! setjmp (read_alarm_throw
))
2631 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2635 if (hold_quit
.kind
!= NO_EVENT
)
2636 kbd_buffer_store_event (&hold_quit
);
2640 struct input_event e
;
2642 nread
= read (fileno (stdin
), buf
, 1);
2645 /* Scan the chars for C-g and store them in kbd_buffer. */
2646 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2647 e
.frame_or_window
= selected_frame
;
2649 for (i
= 0; i
< nread
; i
++)
2651 /* Convert chars > 0177 to meta events if desired.
2652 We do this under the same conditions that read_avail_input does. */
2653 if (read_socket_hook
== 0)
2655 /* If the user says she has a meta key, then believe her. */
2656 if (meta_key
== 1 && (buf
[i
] & 0x80))
2657 e
.modifiers
= meta_modifier
;
2662 XSETINT (e
.code
, buf
[i
]);
2663 kbd_buffer_store_event (&e
);
2664 /* Don't look at input that follows a C-g too closely.
2665 This reduces lossage due to autorepeat on C-g. */
2666 if (buf
[i
] == quit_char
)
2672 #endif /* not HAVE_SELECT */
2673 #endif /* not VMS */
2674 #endif /* not MSDOS */
2683 lmode
= LINTRUP
| lmode
;
2684 ioctl (fd
, TIOCLSET
, &lmode
);
2692 lmode
= ~LINTRUP
& lmode
;
2693 ioctl (0, TIOCLSET
, &lmode
);
2701 interrupts_deferred
= 0;
2709 interrupts_deferred
= 1;
2712 /* still inside #ifdef BSD4_1 */
2715 int sigheld
; /* Mask of held signals */
2721 sigheld
|= sigbit (signum
);
2729 sigheld
|= sigbit (signum
);
2736 sigheld
&= ~sigbit (signum
);
2741 sigfree () /* Free all held signals */
2744 for (i
= 0; i
< NSIG
; i
++)
2745 if (sigheld
& sigbit (i
))
2753 return 1 << (i
- 1);
2755 #endif /* subprocesses */
2758 /* POSIX signals support - DJB */
2759 /* Anyone with POSIX signals should have ANSI C declarations */
2761 #ifdef POSIX_SIGNALS
2763 sigset_t empty_mask
, full_mask
;
2766 sys_signal (int signal_number
, signal_handler_t action
)
2768 struct sigaction new_action
, old_action
;
2769 sigemptyset (&new_action
.sa_mask
);
2770 new_action
.sa_handler
= action
;
2771 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART)
2772 /* Emacs mostly works better with restartable system services. If this
2773 flag exists, we probably want to turn it on here.
2774 However, on some systems this resets the timeout of `select'
2775 which means that `select' never finishes if it keeps getting signals.
2776 BROKEN_SA_RESTART is defined on those systems. */
2777 new_action
.sa_flags
= SA_RESTART
;
2779 new_action
.sa_flags
= 0;
2781 sigaction (signal_number
, &new_action
, &old_action
);
2782 return (old_action
.sa_handler
);
2786 /* If we're compiling with GCC, we don't need this function, since it
2787 can be written as a macro. */
2789 sys_sigmask (int sig
)
2792 sigemptyset (&mask
);
2793 sigaddset (&mask
, sig
);
2798 /* I'd like to have these guys return pointers to the mask storage in here,
2799 but there'd be trouble if the code was saving multiple masks. I'll be
2800 safe and pass the structure. It normally won't be more than 2 bytes
2804 sys_sigblock (sigset_t new_mask
)
2807 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2812 sys_sigunblock (sigset_t new_mask
)
2815 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2820 sys_sigsetmask (sigset_t new_mask
)
2823 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2827 #endif /* POSIX_SIGNALS */
2829 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2830 static char *my_sys_siglist
[NSIG
];
2834 # define sys_siglist my_sys_siglist
2840 #ifdef POSIX_SIGNALS
2841 sigemptyset (&empty_mask
);
2842 sigfillset (&full_mask
);
2845 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2849 sys_siglist
[SIGABRT
] = "Aborted";
2852 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2855 sys_siglist
[SIGALRM
] = "Alarm clock";
2858 sys_siglist
[SIGBUS
] = "Bus error";
2861 sys_siglist
[SIGCLD
] = "Child status changed";
2864 sys_siglist
[SIGCHLD
] = "Child status changed";
2867 sys_siglist
[SIGCONT
] = "Continued";
2870 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2873 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2876 sys_siglist
[SIGEMT
] = "Emulation trap";
2879 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2882 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2885 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2888 sys_siglist
[SIGHUP
] = "Hangup";
2891 sys_siglist
[SIGILL
] = "Illegal instruction";
2894 sys_siglist
[SIGINT
] = "Interrupt";
2897 sys_siglist
[SIGIO
] = "I/O possible";
2900 sys_siglist
[SIGIOINT
] = "I/O intervention required";
2903 sys_siglist
[SIGIOT
] = "IOT trap";
2906 sys_siglist
[SIGKILL
] = "Killed";
2909 sys_siglist
[SIGLOST
] = "Resource lost";
2912 sys_siglist
[SIGLWP
] = "SIGLWP";
2915 sys_siglist
[SIGMSG
] = "Monitor mode data available";
2918 sys_siglist
[SIGWIND
] = "SIGPHONE";
2921 sys_siglist
[SIGPIPE
] = "Broken pipe";
2924 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
2927 sys_siglist
[SIGPROF
] = "Profiling timer expired";
2930 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
2933 sys_siglist
[SIGPWR
] = "Power-fail restart";
2936 sys_siglist
[SIGQUIT
] = "Quit";
2939 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
2942 sys_siglist
[SIGSAK
] = "Secure attention";
2945 sys_siglist
[SIGSEGV
] = "Segmentation violation";
2948 sys_siglist
[SIGSOUND
] = "Sound completed";
2951 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
2954 sys_siglist
[SIGSTP
] = "Stopped (user)";
2957 sys_siglist
[SIGSYS
] = "Bad argument to system call";
2960 sys_siglist
[SIGTERM
] = "Terminated";
2963 sys_siglist
[SIGTHAW
] = "SIGTHAW";
2966 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
2969 sys_siglist
[SIGTSTP
] = "Stopped (user)";
2972 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
2975 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
2978 sys_siglist
[SIGURG
] = "Urgent I/O condition";
2981 sys_siglist
[SIGUSR1
] = "User defined signal 1";
2984 sys_siglist
[SIGUSR2
] = "User defined signal 2";
2987 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
2990 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
2993 sys_siglist
[SIGWINCH
] = "Window size changed";
2996 sys_siglist
[SIGWIND
] = "SIGWIND";
2999 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3002 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3005 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
3014 /* Figure out how many bits the system's random number generator uses.
3015 `random' and `lrand48' are assumed to return 31 usable bits.
3016 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3017 so we'll shift it and treat it like the 15-bit USG `rand'. */
3021 # define RAND_BITS 31
3022 # else /* !HAVE_RANDOM */
3023 # ifdef HAVE_LRAND48
3024 # define RAND_BITS 31
3025 # define random lrand48
3026 # else /* !HAVE_LRAND48 */
3027 # define RAND_BITS 15
3028 # if RAND_MAX == 32767
3029 # define random rand
3030 # else /* RAND_MAX != 32767 */
3031 # if RAND_MAX == 2147483647
3032 # define random() (rand () >> 16)
3033 # else /* RAND_MAX != 2147483647 */
3035 # define random rand
3037 # define random() (rand () >> 16)
3039 # endif /* RAND_MAX != 2147483647 */
3040 # endif /* RAND_MAX != 32767 */
3041 # endif /* !HAVE_LRAND48 */
3042 # endif /* !HAVE_RANDOM */
3043 #endif /* !RAND_BITS */
3050 srandom ((unsigned int)arg
);
3052 # ifdef HAVE_LRAND48
3055 srand ((unsigned int)arg
);
3061 * Build a full Emacs-sized word out of whatever we've got.
3062 * This suffices even for a 64-bit architecture with a 15-bit rand.
3067 long val
= random ();
3068 #if VALBITS > RAND_BITS
3069 val
= (val
<< RAND_BITS
) ^ random ();
3070 #if VALBITS > 2*RAND_BITS
3071 val
= (val
<< RAND_BITS
) ^ random ();
3072 #if VALBITS > 3*RAND_BITS
3073 val
= (val
<< RAND_BITS
) ^ random ();
3074 #if VALBITS > 4*RAND_BITS
3075 val
= (val
<< RAND_BITS
) ^ random ();
3076 #endif /* need at least 5 */
3077 #endif /* need at least 4 */
3078 #endif /* need at least 3 */
3079 #endif /* need at least 2 */
3080 return val
& ((1L << VALBITS
) - 1);
3083 #ifdef WRONG_NAME_INSQUE
3096 /* If any place else asks for the TERM variable,
3097 allow it to be overridden with the EMACS_TERM variable
3098 before attempting to translate the logical name TERM. As a last
3099 resort, ask for VAX C's special idea of the TERM variable. */
3106 static char buf
[256];
3107 static struct dsc$descriptor_s equiv
3108 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3109 static struct dsc$descriptor_s d_name
3110 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3113 if (!strcmp (name
, "TERM"))
3115 val
= (char *) getenv ("EMACS_TERM");
3120 d_name
.dsc$w_length
= strlen (name
);
3121 d_name
.dsc$a_pointer
= name
;
3122 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3124 char *str
= (char *) xmalloc (eqlen
+ 1);
3125 bcopy (buf
, str
, eqlen
);
3127 /* This is a storage leak, but a pain to fix. With luck,
3128 no one will ever notice. */
3131 return (char *) getenv (name
);
3136 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3137 to force a call on the debugger from within the image. */
3142 LIB$
SIGNAL (SS$_DEBUG
);
3148 #ifdef LINK_CRTL_SHARE
3149 #ifdef SHARABLE_LIB_BUG
3150 /* Variables declared noshare and initialized in sharable libraries
3151 cannot be shared. The VMS linker incorrectly forces you to use a private
3152 version which is uninitialized... If not for this "feature", we
3153 could use the C library definition of sys_nerr and sys_errlist. */
3155 char *sys_errlist
[] =
3159 "no such file or directory",
3161 "interrupted system call",
3163 "no such device or address",
3164 "argument list too long",
3165 "exec format error",
3168 "no more processes",
3169 "not enough memory",
3170 "permission denied",
3172 "block device required",
3173 "mount devices busy",
3175 "cross-device link",
3180 "file table overflow",
3181 "too many open files",
3185 "no space left on device",
3187 "read-only file system",
3193 "vax/vms specific error code nontranslatable error"
3195 #endif /* SHARABLE_LIB_BUG */
3196 #endif /* LINK_CRTL_SHARE */
3199 #ifndef HAVE_STRERROR
3205 extern char *sys_errlist
[];
3206 extern int sys_nerr
;
3208 if (errnum
>= 0 && errnum
< sys_nerr
)
3209 return sys_errlist
[errnum
];
3210 return (char *) "Unknown error";
3212 #endif /* not WINDOWSNT */
3213 #endif /* ! HAVE_STRERROR */
3216 emacs_open (path
, oflag
, mode
)
3220 register int rtnval
;
3223 if (oflag
& O_CREAT
)
3224 return creat (path
, mode
);
3227 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3228 && (errno
== EINTR
));
3237 register int rtnval
;
3239 while ((rtnval
= close (fd
)) == -1
3240 && (errno
== EINTR
))
3243 /* If close is interrupted SunOS 4.1 may or may not have closed the
3244 file descriptor. If it did the second close will fail with
3245 errno = EBADF. That means we have succeeded. */
3246 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3253 emacs_read (fildes
, buf
, nbyte
)
3258 register int rtnval
;
3260 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3261 && (errno
== EINTR
));
3266 emacs_write (fildes
, buf
, nbyte
)
3271 register int rtnval
, bytes_written
;
3277 rtnval
= write (fildes
, buf
, nbyte
);
3284 return (bytes_written
? bytes_written
: -1);
3289 bytes_written
+= rtnval
;
3291 return (bytes_written
);
3296 * All of the following are for USG.
3298 * On USG systems the system calls are INTERRUPTIBLE by signals
3299 * that the user program has elected to catch. Thus the system call
3300 * must be retried in these cases. To handle this without massive
3301 * changes in the source code, we remap the standard system call names
3302 * to names for our own functions in sysdep.c that do the system call
3303 * with retries. Actually, for portability reasons, it is good
3304 * programming practice, as this example shows, to limit all actual
3305 * system calls to a single occurrence in the source. Sure, this
3306 * adds an extra level of function call overhead but it is almost
3307 * always negligible. Fred Fish, Unisoft Systems Inc.
3311 * Warning, this function may not duplicate 4.2 action properly
3312 * under error conditions.
3316 /* In 4.1, param.h fails to define this. */
3317 #define MAXPATHLEN 1024
3326 char *npath
, *spath
;
3327 extern char *getcwd ();
3329 BLOCK_INPUT
; /* getcwd uses malloc */
3330 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3336 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3337 up to first slash. Should be harmless on other systems. */
3338 while (*npath
&& *npath
!= '/')
3340 strcpy (pathname
, npath
);
3341 free (spath
); /* getcwd uses malloc */
3346 #endif /* HAVE_GETWD */
3349 * Emulate rename using unlink/link. Note that this is
3350 * only partially correct. Also, doesn't enforce restriction
3351 * that files be of same type (regular->regular, dir->dir, etc).
3360 if (access (from
, 0) == 0)
3363 if (link (from
, to
) == 0)
3364 if (unlink (from
) == 0)
3376 /* HPUX curses library references perror, but as far as we know
3377 it won't be called. Anyway this definition will do for now. */
3383 #endif /* not HAVE_PERROR */
3389 * Emulate BSD dup2. First close newd if it already exists.
3390 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3391 * until we are, then close the unsuccessful ones.
3398 register int fd
, ret
;
3403 return fcntl (oldd
, F_DUPFD
, newd
);
3410 ret
= dup2 (old
,new);
3416 #endif /* not HAVE_DUP2 */
3419 * Gettimeofday. Simulate as much as possible. Only accurate
3420 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3421 * Only needed when subprocesses are defined.
3426 #ifndef HAVE_GETTIMEOFDAY
3431 gettimeofday (tp
, tzp
)
3433 struct timezone
*tzp
;
3435 extern long time ();
3437 tp
->tv_sec
= time ((long *)0);
3440 tzp
->tz_minuteswest
= -1;
3447 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3450 * This function will go away as soon as all the stubs fixed. (fnf)
3457 printf ("%s not yet implemented\r\n", badfunc
);
3464 /* Directory routines for systems that don't have them. */
3466 #ifdef SYSV_SYSTEM_DIR
3470 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3474 register DIR *dirp
; /* stream from opendir */
3478 rtnval
= emacs_close (dirp
->dd_fd
);
3480 /* Some systems (like Solaris) allocate the buffer and the DIR all
3481 in one block. Why in the world are we freeing this ourselves
3483 #if ! (defined (sun) && defined (USG5_4))
3484 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3486 xfree ((char *) dirp
);
3490 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3491 #endif /* SYSV_SYSTEM_DIR */
3493 #ifdef NONSYSTEM_DIR_LIBRARY
3497 char *filename
; /* name of directory */
3499 register DIR *dirp
; /* -> malloc'ed storage */
3500 register int fd
; /* file descriptor for read */
3501 struct stat sbuf
; /* result of fstat */
3503 fd
= emacs_open (filename
, O_RDONLY
, 0);
3508 if (fstat (fd
, &sbuf
) < 0
3509 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3510 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3514 return 0; /* bad luck today */
3519 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3526 register DIR *dirp
; /* stream from opendir */
3528 emacs_close (dirp
->dd_fd
);
3529 xfree ((char *) dirp
);
3537 ino_t od_ino
; /* inode */
3538 char od_name
[DIRSIZ
]; /* filename */
3540 #endif /* not VMS */
3542 struct direct dir_static
; /* simulated directory contents */
3547 register DIR *dirp
; /* stream from opendir */
3550 register struct olddir
*dp
; /* -> directory data */
3552 register struct dir$_name
*dp
; /* -> directory data */
3553 register struct dir$_version
*dv
; /* -> version data */
3558 if (dirp
->dd_loc
>= dirp
->dd_size
)
3559 dirp
->dd_loc
= dirp
->dd_size
= 0;
3561 if (dirp
->dd_size
== 0 /* refill buffer */
3562 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3566 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3567 dirp
->dd_loc
+= sizeof (struct olddir
);
3569 if (dp
->od_ino
!= 0) /* not deleted entry */
3571 dir_static
.d_ino
= dp
->od_ino
;
3572 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3573 dir_static
.d_name
[DIRSIZ
] = '\0';
3574 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3575 dir_static
.d_reclen
= sizeof (struct direct
)
3577 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3578 return &dir_static
; /* -> simulated structure */
3581 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3582 if (dirp
->dd_loc
== 0)
3583 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3584 : dp
->dir$b_namecount
;
3585 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3586 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3587 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3588 dir_static
.d_reclen
= sizeof (struct direct
)
3590 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3591 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3592 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3593 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3600 /* readdirver is just like readdir except it returns all versions of a file
3601 as separate entries. */
3606 register DIR *dirp
; /* stream from opendir */
3608 register struct dir$_name
*dp
; /* -> directory data */
3609 register struct dir$_version
*dv
; /* -> version data */
3611 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3612 dirp
->dd_loc
= dirp
->dd_size
= 0;
3614 if (dirp
->dd_size
== 0 /* refill buffer */
3615 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3618 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3619 if (dirp
->dd_loc
== 0)
3620 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3621 : dp
->dir$b_namecount
;
3622 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3623 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3624 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3625 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3626 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3627 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3628 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3629 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3635 #endif /* NONSYSTEM_DIR_LIBRARY */
3639 set_file_times (filename
, atime
, mtime
)
3640 const char *filename
;
3641 EMACS_TIME atime
, mtime
;
3644 struct timeval tv
[2];
3647 return utimes (filename
, tv
);
3648 #else /* not HAVE_UTIMES */
3650 utb
.actime
= EMACS_SECS (atime
);
3651 utb
.modtime
= EMACS_SECS (mtime
);
3652 return utime (filename
, &utb
);
3653 #endif /* not HAVE_UTIMES */
3656 /* mkdir and rmdir functions, for systems which don't have them. */
3660 * Written by Robert Rother, Mariah Corporation, August 1985.
3662 * If you want it, it's yours. All I ask in return is that if you
3663 * figure out how to do this in a Bourne Shell script you send me
3665 * sdcsvax!rmr or rmr@uscd
3667 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3668 * subroutine. 11Mar86; hoptoad!gnu
3670 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3671 * subroutine didn't return EEXIST. It does now.
3677 #ifdef MKDIR_PROTOTYPE
3681 mkdir (dpath
, dmode
)
3686 int cpid
, status
, fd
;
3687 struct stat statbuf
;
3689 if (stat (dpath
, &statbuf
) == 0)
3691 errno
= EEXIST
; /* Stat worked, so it already exists */
3695 /* If stat fails for a reason other than non-existence, return error */
3696 if (errno
!= ENOENT
)
3699 synch_process_alive
= 1;
3700 switch (cpid
= fork ())
3703 case -1: /* Error in fork */
3704 return (-1); /* Errno is set already */
3706 case 0: /* Child process */
3708 * Cheap hack to set mode of new directory. Since this
3709 * child process is going away anyway, we zap its umask.
3710 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3711 * directory. Does anybody care?
3713 status
= umask (0); /* Get current umask */
3714 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3715 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3722 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3723 _exit (-1); /* Can't exec /bin/mkdir */
3725 default: /* Parent process */
3726 wait_for_termination (cpid
);
3729 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3730 || synch_process_termsig
!= 0)
3732 errno
= EIO
; /* We don't know why, but */
3733 return -1; /* /bin/mkdir failed */
3738 #endif /* not HAVE_MKDIR */
3745 int cpid
, status
, fd
;
3746 struct stat statbuf
;
3748 if (stat (dpath
, &statbuf
) != 0)
3750 /* Stat just set errno. We don't have to */
3754 synch_process_alive
= 1;
3755 switch (cpid
= fork ())
3758 case -1: /* Error in fork */
3759 return (-1); /* Errno is set already */
3761 case 0: /* Child process */
3762 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3769 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3770 _exit (-1); /* Can't exec /bin/rmdir */
3772 default: /* Parent process */
3773 wait_for_termination (cpid
);
3776 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3777 || synch_process_termsig
!= 0)
3779 errno
= EIO
; /* We don't know why, but */
3780 return -1; /* /bin/rmdir failed */
3785 #endif /* !HAVE_RMDIR */
3789 /* Functions for VMS */
3791 #include "vms-pwd.h"
3796 /* Return as a string the VMS error string pertaining to STATUS.
3797 Reuses the same static buffer each time it is called. */
3801 int status
; /* VMS status code */
3805 static char buf
[257];
3807 bufadr
[0] = sizeof buf
- 1;
3808 bufadr
[1] = (int) buf
;
3809 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3810 return "untranslatable VMS error status";
3818 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3819 * not work correctly. (It also doesn't work well in version 2.3.)
3824 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3825 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3829 unsigned short s_buflen
;
3830 unsigned short s_code
;
3832 unsigned short *s_retlenadr
;
3836 #define buflen s.s_buflen
3837 #define code s.s_code
3838 #define bufadr s.s_bufadr
3839 #define retlenadr s.s_retlenadr
3841 #define R_OK 4 /* test for read permission */
3842 #define W_OK 2 /* test for write permission */
3843 #define X_OK 1 /* test for execute (search) permission */
3844 #define F_OK 0 /* test for presence of file */
3847 sys_access (path
, mode
)
3851 static char *user
= NULL
;
3854 /* translate possible directory spec into .DIR file name, so brain-dead
3855 * access can treat the directory like a file. */
3856 if (directory_file_name (path
, dir_fn
))
3860 return access (path
, mode
);
3861 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3867 unsigned short int dummy
;
3869 static int constant
= ACL$C_FILE
;
3870 DESCRIPTOR (path_desc
, path
);
3871 DESCRIPTOR (user_desc
, user
);
3875 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3878 acces
|= CHP$M_READ
;
3880 acces
|= CHP$M_WRITE
;
3881 itemlst
[0].buflen
= sizeof (int);
3882 itemlst
[0].code
= CHP$_FLAGS
;
3883 itemlst
[0].bufadr
= (char *) &flags
;
3884 itemlst
[0].retlenadr
= &dummy
;
3885 itemlst
[1].buflen
= sizeof (int);
3886 itemlst
[1].code
= CHP$_ACCESS
;
3887 itemlst
[1].bufadr
= (char *) &acces
;
3888 itemlst
[1].retlenadr
= &dummy
;
3889 itemlst
[2].end
= CHP$_END
;
3890 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3891 return stat
== SS$_NORMAL
? 0 : -1;
3895 #else /* not VMS4_4 */
3898 #define ACE$M_WRITE 2
3899 #define ACE$C_KEYID 1
3901 static unsigned short memid
, grpid
;
3902 static unsigned int uic
;
3904 /* Called from init_sys_modes, so it happens not very often
3905 but at least each time Emacs is loaded. */
3907 sys_access_reinit ()
3913 sys_access (filename
, type
)
3919 int status
, size
, i
, typecode
, acl_controlled
;
3920 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3921 union prvdef prvmask
;
3923 /* Get UIC and GRP values for protection checking. */
3926 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3929 memid
= uic
& 0xFFFF;
3933 if (type
!= 2) /* not checking write access */
3934 return access (filename
, type
);
3936 /* Check write protection. */
3938 #define CHECKPRIV(bit) (prvmask.bit)
3939 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3941 /* Find privilege bits */
3942 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3944 error ("Unable to find privileges: %s", vmserrstr (status
));
3945 if (CHECKPRIV (PRV$V_BYPASS
))
3946 return 0; /* BYPASS enabled */
3948 fab
.fab$b_fac
= FAB$M_GET
;
3949 fab
.fab$l_fna
= filename
;
3950 fab
.fab$b_fns
= strlen (filename
);
3951 fab
.fab$l_xab
= &xab
;
3952 xab
= cc$rms_xabpro
;
3953 xab
.xab$l_aclbuf
= aclbuf
;
3954 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3955 status
= SYS$
OPEN (&fab
, 0, 0);
3958 SYS$
CLOSE (&fab
, 0, 0);
3959 /* Check system access */
3960 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3962 /* Check ACL entries, if any */
3964 if (xab
.xab$w_acllen
> 0)
3967 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3968 while (*aclptr
&& aclptr
< aclend
)
3970 size
= (*aclptr
& 0xff) / 4;
3971 typecode
= (*aclptr
>> 8) & 0xff;
3972 if (typecode
== ACE$C_KEYID
)
3973 for (i
= size
- 1; i
> 1; i
--)
3974 if (aclptr
[i
] == uic
)
3977 if (aclptr
[1] & ACE$M_WRITE
)
3978 return 0; /* Write access through ACL */
3980 aclptr
= &aclptr
[size
];
3982 if (acl_controlled
) /* ACL specified, prohibits write access */
3985 /* No ACL entries specified, check normal protection */
3986 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3988 if (WRITABLE (XAB$V_GRP
) &&
3989 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3990 return 0; /* Group writable */
3991 if (WRITABLE (XAB$V_OWN
) &&
3992 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3993 return 0; /* Owner writable */
3995 return -1; /* Not writable */
3997 #endif /* not VMS4_4 */
4000 static char vtbuf
[NAM$C_MAXRSS
+1];
4002 /* translate a vms file spec to a unix path */
4004 sys_translate_vms (vfile
)
4015 /* leading device or logical name is a root directory */
4016 if (p
= strchr (vfile
, ':'))
4025 if (*p
== '[' || *p
== '<')
4027 while (*++vfile
!= *p
+ 2)
4031 if (vfile
[-1] == *p
)
4054 static char utbuf
[NAM$C_MAXRSS
+1];
4056 /* translate a unix path to a VMS file spec */
4058 sys_translate_unix (ufile
)
4081 if (index (&ufile
[1], '/'))
4088 if (index (&ufile
[1], '/'))
4095 if (strncmp (ufile
, "./", 2) == 0)
4102 ufile
++; /* skip the dot */
4103 if (index (&ufile
[1], '/'))
4108 else if (strncmp (ufile
, "../", 3) == 0)
4116 ufile
+= 2; /* skip the dots */
4117 if (index (&ufile
[1], '/'))
4142 extern char *getcwd ();
4144 #define MAXPATHLEN 1024
4146 ptr
= xmalloc (MAXPATHLEN
);
4147 val
= getcwd (ptr
, MAXPATHLEN
);
4153 strcpy (pathname
, ptr
);
4162 long item_code
= JPI$_OWNER
;
4163 unsigned long parent_id
;
4166 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4169 vaxc$errno
= status
;
4179 return (getgid () << 16) | getuid ();
4184 sys_read (fildes
, buf
, nbyte
)
4189 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4194 sys_write (fildes
, buf
, nbyte
)
4199 register int nwrote
, rtnval
= 0;
4201 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4207 return rtnval
? rtnval
: -1;
4208 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4209 return rtnval
? rtnval
: -1;
4210 return (rtnval
+ nwrote
);
4215 * VAX/VMS VAX C RTL really loses. It insists that records
4216 * end with a newline (carriage return) character, and if they
4217 * don't it adds one (nice of it isn't it!)
4219 * Thus we do this stupidity below.
4224 sys_write (fildes
, buf
, nbytes
)
4227 unsigned int nbytes
;
4234 fstat (fildes
, &st
);
4240 /* Handle fixed-length files with carriage control. */
4241 if (st
.st_fab_rfm
== FAB$C_FIX
4242 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4244 len
= st
.st_fab_mrs
;
4245 retval
= write (fildes
, p
, min (len
, nbytes
));
4248 retval
++; /* This skips the implied carriage control */
4252 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4253 while (*e
!= '\n' && e
> p
) e
--;
4254 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4255 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4257 retval
= write (fildes
, p
, len
);
4268 /* Create file NEW copying its attributes from file OLD. If
4269 OLD is 0 or does not exist, create based on the value of
4272 /* Protection value the file should ultimately have.
4273 Set by create_copy_attrs, and use by rename_sansversions. */
4274 static unsigned short int fab_final_pro
;
4277 creat_copy_attrs (old
, new)
4280 struct FAB fab
= cc$rms_fab
;
4281 struct XABPRO xabpro
;
4282 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4283 extern int vms_stmlf_recfm
;
4287 fab
.fab$b_fac
= FAB$M_GET
;
4288 fab
.fab$l_fna
= old
;
4289 fab
.fab$b_fns
= strlen (old
);
4290 fab
.fab$l_xab
= (char *) &xabpro
;
4291 xabpro
= cc$rms_xabpro
;
4292 xabpro
.xab$l_aclbuf
= aclbuf
;
4293 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4294 /* Call $OPEN to fill in the fab & xabpro fields. */
4295 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4297 SYS$
CLOSE (&fab
, 0, 0);
4298 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4299 if (xabpro
.xab$w_acllen
> 0)
4301 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4302 /* If the acl buffer was too short, redo open with longer one.
4303 Wouldn't need to do this if there were some system imposed
4304 limit on the size of an ACL, but I can't find any such. */
4306 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4307 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4308 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4309 SYS$
CLOSE (&fab
, 0, 0);
4315 xabpro
.xab$l_aclbuf
= 0;
4320 fab
.fab$l_fna
= new;
4321 fab
.fab$b_fns
= strlen (new);
4325 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4326 fab
.fab$b_rat
= FAB$M_CR
;
4329 /* Set the file protections such that we will be able to manipulate
4330 this file. Once we are done writing and renaming it, we will set
4331 the protections back. */
4333 fab_final_pro
= xabpro
.xab$w_pro
;
4335 SYS$
SETDFPROT (0, &fab_final_pro
);
4336 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4338 /* Create the new file with either default attrs or attrs copied
4340 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4342 SYS$
CLOSE (&fab
, 0, 0);
4343 /* As this is a "replacement" for creat, return a file descriptor
4344 opened for writing. */
4345 return open (new, O_WRONLY
);
4350 #include <varargs.h>
4353 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4358 sys_creat (va_alist
)
4361 va_list list_incrementer
;
4364 int rfd
; /* related file descriptor */
4365 int fd
; /* Our new file descriptor */
4372 extern int vms_stmlf_recfm
;
4375 va_start (list_incrementer
);
4376 name
= va_arg (list_incrementer
, char *);
4377 mode
= va_arg (list_incrementer
, int);
4379 rfd
= va_arg (list_incrementer
, int);
4380 va_end (list_incrementer
);
4383 /* Use information from the related file descriptor to set record
4384 format of the newly created file. */
4385 fstat (rfd
, &st_buf
);
4386 switch (st_buf
.st_fab_rfm
)
4389 strcpy (rfm
, "rfm = fix");
4390 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4391 strcpy (rat
, "rat = ");
4392 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4394 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4395 strcat (rat
, "ftn");
4396 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4397 strcat (rat
, "prn");
4398 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4399 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4400 strcat (rat
, ", blk");
4402 strcat (rat
, "blk");
4403 return creat (name
, 0, rfm
, rat
, mrs
);
4406 strcpy (rfm
, "rfm = vfc");
4407 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4408 strcpy (rat
, "rat = ");
4409 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4411 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4412 strcat (rat
, "ftn");
4413 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4414 strcat (rat
, "prn");
4415 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4416 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4417 strcat (rat
, ", blk");
4419 strcat (rat
, "blk");
4420 return creat (name
, 0, rfm
, rat
, fsz
);
4423 strcpy (rfm
, "rfm = stm");
4427 strcpy (rfm
, "rfm = stmcr");
4431 strcpy (rfm
, "rfm = stmlf");
4435 strcpy (rfm
, "rfm = udf");
4439 strcpy (rfm
, "rfm = var");
4442 strcpy (rat
, "rat = ");
4443 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4445 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4446 strcat (rat
, "ftn");
4447 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4448 strcat (rat
, "prn");
4449 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4450 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4451 strcat (rat
, ", blk");
4453 strcat (rat
, "blk");
4457 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4458 strcpy (rat
, "rat=cr");
4460 /* Until the VAX C RTL fixes the many bugs with modes, always use
4461 mode 0 to get the user's default protection. */
4462 fd
= creat (name
, 0, rfm
, rat
);
4463 if (fd
< 0 && errno
== EEXIST
)
4465 if (unlink (name
) < 0)
4466 report_file_error ("delete", build_string (name
));
4467 fd
= creat (name
, 0, rfm
, rat
);
4473 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4475 sys_fwrite (ptr
, size
, num
, fp
)
4476 register char * ptr
;
4479 register int tot
= num
* size
;
4487 * The VMS C library routine creat actually creates a new version of an
4488 * existing file rather than truncating the old version. There are times
4489 * when this is not the desired behavior, for instance, when writing an
4490 * auto save file (you only want one version), or when you don't have
4491 * write permission in the directory containing the file (but the file
4492 * itself is writable). Hence this routine, which is equivalent to
4493 * "close (creat (fn, 0));" on Unix if fn already exists.
4499 struct FAB xfab
= cc$rms_fab
;
4500 struct RAB xrab
= cc$rms_rab
;
4503 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4504 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4505 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4506 xfab
.fab$l_fna
= fn
;
4507 xfab
.fab$b_fns
= strlen (fn
);
4508 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4510 xrab
.rab$l_fab
= &xfab
;
4512 /* This gibberish opens the file, positions to the first record, and
4513 deletes all records from there until the end of file. */
4514 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4516 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4517 (SYS$
FIND (&xrab
) & 01) == 01 &&
4518 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4529 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4530 SYSPRV or a readable SYSUAF.DAT. */
4536 * Routine to read the VMS User Authorization File and return
4537 * a specific user's record.
4540 static struct UAF retuaf
;
4543 get_uaf_name (uname
)
4550 uaf_fab
= cc$rms_fab
;
4551 uaf_rab
= cc$rms_rab
;
4552 /* initialize fab fields */
4553 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4554 uaf_fab
.fab$b_fns
= 21;
4555 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4556 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4557 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4558 /* initialize rab fields */
4559 uaf_rab
.rab$l_fab
= &uaf_fab
;
4560 /* open the User Authorization File */
4561 status
= SYS$
OPEN (&uaf_fab
);
4565 vaxc$errno
= status
;
4568 status
= SYS$
CONNECT (&uaf_rab
);
4572 vaxc$errno
= status
;
4575 /* read the requested record - index is in uname */
4576 uaf_rab
.rab$l_kbf
= uname
;
4577 uaf_rab
.rab$b_ksz
= strlen (uname
);
4578 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4579 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4580 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4581 status
= SYS$
GET (&uaf_rab
);
4585 vaxc$errno
= status
;
4588 /* close the User Authorization File */
4589 status
= SYS$
DISCONNECT (&uaf_rab
);
4593 vaxc$errno
= status
;
4596 status
= SYS$
CLOSE (&uaf_fab
);
4600 vaxc$errno
= status
;
4614 uaf_fab
= cc$rms_fab
;
4615 uaf_rab
= cc$rms_rab
;
4616 /* initialize fab fields */
4617 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4618 uaf_fab
.fab$b_fns
= 21;
4619 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4620 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4621 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4622 /* initialize rab fields */
4623 uaf_rab
.rab$l_fab
= &uaf_fab
;
4624 /* open the User Authorization File */
4625 status
= SYS$
OPEN (&uaf_fab
);
4629 vaxc$errno
= status
;
4632 status
= SYS$
CONNECT (&uaf_rab
);
4636 vaxc$errno
= status
;
4639 /* read the requested record - index is in uic */
4640 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4641 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4642 uaf_rab
.rab$b_ksz
= sizeof uic
;
4643 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4644 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4645 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4646 status
= SYS$
GET (&uaf_rab
);
4650 vaxc$errno
= status
;
4653 /* close the User Authorization File */
4654 status
= SYS$
DISCONNECT (&uaf_rab
);
4658 vaxc$errno
= status
;
4661 status
= SYS$
CLOSE (&uaf_fab
);
4665 vaxc$errno
= status
;
4671 static struct passwd retpw
;
4679 /* copy these out first because if the username is 32 chars, the next
4680 section will overwrite the first byte of the UIC */
4681 retpw
.pw_uid
= up
->uaf$w_mem
;
4682 retpw
.pw_gid
= up
->uaf$w_grp
;
4684 /* I suppose this is not the best style, to possibly overwrite one
4685 byte beyond the end of the field, but what the heck... */
4686 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4687 while (ptr
[-1] == ' ')
4690 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4692 /* the rest of these are counted ascii strings */
4693 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4694 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4695 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4696 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4697 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4698 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4699 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4700 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4704 #else /* not READ_SYSUAF */
4705 static struct passwd retpw
;
4706 #endif /* not READ_SYSUAF */
4717 unsigned char * full
;
4718 #endif /* READ_SYSUAF */
4723 if ('a' <= *ptr
&& *ptr
<= 'z')
4728 if (!(up
= get_uaf_name (name
)))
4730 return cnv_uaf_pw (up
);
4732 if (strcmp (name
, getenv ("USER")) == 0)
4734 retpw
.pw_uid
= getuid ();
4735 retpw
.pw_gid
= getgid ();
4736 strcpy (retpw
.pw_name
, name
);
4737 if (full
= egetenv ("FULLNAME"))
4738 strcpy (retpw
.pw_gecos
, full
);
4740 *retpw
.pw_gecos
= '\0';
4741 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4742 *retpw
.pw_shell
= '\0';
4747 #endif /* not READ_SYSUAF */
4757 if (!(up
= get_uaf_uic (uid
)))
4759 return cnv_uaf_pw (up
);
4761 if (uid
== sys_getuid ())
4762 return getpwnam (egetenv ("USER"));
4765 #endif /* not READ_SYSUAF */
4768 /* return total address space available to the current process. This is
4769 the sum of the current p0 size, p1 size and free page table entries
4775 unsigned long free_pages
;
4776 unsigned long frep0va
;
4777 unsigned long frep1va
;
4780 item_code
= JPI$_FREPTECNT
;
4781 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4784 vaxc$errno
= status
;
4789 item_code
= JPI$_FREP0VA
;
4790 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4793 vaxc$errno
= status
;
4796 item_code
= JPI$_FREP1VA
;
4797 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4800 vaxc$errno
= status
;
4804 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4808 define_logical_name (varname
, string
)
4812 struct dsc$descriptor_s strdsc
=
4813 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4814 struct dsc$descriptor_s envdsc
=
4815 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4816 struct dsc$descriptor_s lnmdsc
=
4817 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4819 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4823 delete_logical_name (varname
)
4826 struct dsc$descriptor_s envdsc
=
4827 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4828 struct dsc$descriptor_s lnmdsc
=
4829 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4831 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4849 error ("execvp system call not implemented");
4858 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4859 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4860 char from_esn
[NAM$C_MAXRSS
];
4861 char to_esn
[NAM$C_MAXRSS
];
4863 from_fab
.fab$l_fna
= from
;
4864 from_fab
.fab$b_fns
= strlen (from
);
4865 from_fab
.fab$l_nam
= &from_nam
;
4866 from_fab
.fab$l_fop
= FAB$M_NAM
;
4868 from_nam
.nam$l_esa
= from_esn
;
4869 from_nam
.nam$b_ess
= sizeof from_esn
;
4871 to_fab
.fab$l_fna
= to
;
4872 to_fab
.fab$b_fns
= strlen (to
);
4873 to_fab
.fab$l_nam
= &to_nam
;
4874 to_fab
.fab$l_fop
= FAB$M_NAM
;
4876 to_nam
.nam$l_esa
= to_esn
;
4877 to_nam
.nam$b_ess
= sizeof to_esn
;
4879 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4885 if (status
== RMS$_DEV
)
4889 vaxc$errno
= status
;
4894 /* This function renames a file like `rename', but it strips
4895 the version number from the "to" filename, such that the "to" file is
4896 will always be a new version. It also sets the file protection once it is
4897 finished. The protection that we will use is stored in fab_final_pro,
4898 and was set when we did a creat_copy_attrs to create the file that we
4901 We could use the chmod function, but Eunichs uses 3 bits per user category
4902 to describe the protection, and VMS uses 4 (write and delete are separate
4903 bits). To maintain portability, the VMS implementation of `chmod' wires
4904 the W and D bits together. */
4907 static struct fibdef fib
; /* We need this initialized to zero */
4908 char vms_file_written
[NAM$C_MAXRSS
];
4911 rename_sans_version (from
,to
)
4918 struct FAB to_fab
= cc$rms_fab
;
4919 struct NAM to_nam
= cc$rms_nam
;
4920 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4921 struct dsc$descriptor fib_attr
[2]
4922 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4923 char to_esn
[NAM$C_MAXRSS
];
4925 $
DESCRIPTOR (disk
,to_esn
);
4927 to_fab
.fab$l_fna
= to
;
4928 to_fab
.fab$b_fns
= strlen (to
);
4929 to_fab
.fab$l_nam
= &to_nam
;
4930 to_fab
.fab$l_fop
= FAB$M_NAM
;
4932 to_nam
.nam$l_esa
= to_esn
;
4933 to_nam
.nam$b_ess
= sizeof to_esn
;
4935 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4937 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4938 *(to_nam
.nam$l_ver
) = '\0';
4940 stat
= rename (from
, to_esn
);
4944 strcpy (vms_file_written
, to_esn
);
4946 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4947 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4949 /* Now set the file protection to the correct value */
4950 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4952 /* Copy these fields into the fib */
4953 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4954 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4955 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4957 SYS$
CLOSE (&to_fab
, 0, 0);
4959 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4962 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4963 0, 0, 0, &fib_attr
, 0);
4966 stat
= SYS$
DASSGN (chan
);
4969 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4980 unsigned short fid
[3];
4981 char esa
[NAM$C_MAXRSS
];
4984 fab
.fab$l_fop
= FAB$M_OFP
;
4985 fab
.fab$l_fna
= file
;
4986 fab
.fab$b_fns
= strlen (file
);
4987 fab
.fab$l_nam
= &nam
;
4990 nam
.nam$l_esa
= esa
;
4991 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4993 status
= SYS$
PARSE (&fab
);
4994 if ((status
& 1) == 0)
4997 vaxc$errno
= status
;
5000 status
= SYS$
SEARCH (&fab
);
5001 if ((status
& 1) == 0)
5004 vaxc$errno
= status
;
5008 fid
[0] = nam
.nam$w_fid
[0];
5009 fid
[1] = nam
.nam$w_fid
[1];
5010 fid
[2] = nam
.nam$w_fid
[2];
5012 fab
.fab$l_fna
= new;
5013 fab
.fab$b_fns
= strlen (new);
5015 status
= SYS$
PARSE (&fab
);
5016 if ((status
& 1) == 0)
5019 vaxc$errno
= status
;
5023 nam
.nam$w_fid
[0] = fid
[0];
5024 nam
.nam$w_fid
[1] = fid
[1];
5025 nam
.nam$w_fid
[2] = fid
[2];
5027 nam
.nam$l_esa
= nam
.nam$l_name
;
5028 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5030 status
= SYS$
ENTER (&fab
);
5031 if ((status
& 1) == 0)
5034 vaxc$errno
= status
;
5045 printf ("%s not yet implemented\r\n", badfunc
);
5053 /* Arrange to return a range centered on zero. */
5054 return rand () - (1 << 30);
5066 /* Called from init_sys_modes. */
5072 /* If we're not on an HFT we shouldn't do any of this. We determine
5073 if we are on an HFT by trying to get an HFT error code. If this
5074 call fails, we're not on an HFT. */
5076 if (ioctl (0, HFQERROR
, &junk
) < 0)
5078 #else /* not IBMR2AIX */
5079 if (ioctl (0, HFQEIO
, 0) < 0)
5081 #endif /* not IBMR2AIX */
5083 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5084 as the rubout key's ASCII code. Here this is changed. The bug is that
5085 there's no way to determine the old mapping, so in reset_sys_modes
5086 we need to assume that the normal map had been present. Of course, this
5087 code also doesn't help if on a terminal emulator which doesn't understand
5091 struct hfkeymap keymap
;
5093 buf
.hf_bufp
= (char *)&keymap
;
5094 buf
.hf_buflen
= sizeof (keymap
);
5095 keymap
.hf_nkeys
= 2;
5096 keymap
.hfkey
[0].hf_kpos
= 15;
5097 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5099 keymap
.hfkey
[0].hf_keyidh
= '<';
5100 #else /* not IBMR2AIX */
5101 keymap
.hfkey
[0].hf_page
= '<';
5102 #endif /* not IBMR2AIX */
5103 keymap
.hfkey
[0].hf_char
= 127;
5104 keymap
.hfkey
[1].hf_kpos
= 15;
5105 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5107 keymap
.hfkey
[1].hf_keyidh
= '<';
5108 #else /* not IBMR2AIX */
5109 keymap
.hfkey
[1].hf_page
= '<';
5110 #endif /* not IBMR2AIX */
5111 keymap
.hfkey
[1].hf_char
= 127;
5112 hftctl (0, HFSKBD
, &buf
);
5114 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
5116 line_ins_del_ok
= char_ins_del_ok
= 0;
5119 /* Reset the rubout key to backspace. */
5125 struct hfkeymap keymap
;
5129 if (ioctl (0, HFQERROR
, &junk
) < 0)
5131 #else /* not IBMR2AIX */
5132 if (ioctl (0, HFQEIO
, 0) < 0)
5134 #endif /* not IBMR2AIX */
5136 buf
.hf_bufp
= (char *)&keymap
;
5137 buf
.hf_buflen
= sizeof (keymap
);
5138 keymap
.hf_nkeys
= 2;
5139 keymap
.hfkey
[0].hf_kpos
= 15;
5140 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5142 keymap
.hfkey
[0].hf_keyidh
= '<';
5143 #else /* not IBMR2AIX */
5144 keymap
.hfkey
[0].hf_page
= '<';
5145 #endif /* not IBMR2AIX */
5146 keymap
.hfkey
[0].hf_char
= 8;
5147 keymap
.hfkey
[1].hf_kpos
= 15;
5148 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5150 keymap
.hfkey
[1].hf_keyidh
= '<';
5151 #else /* not IBMR2AIX */
5152 keymap
.hfkey
[1].hf_page
= '<';
5153 #endif /* not IBMR2AIX */
5154 keymap
.hfkey
[1].hf_char
= 8;
5155 hftctl (0, HFSKBD
, &buf
);
5162 /* These are included on Sunos 4.1 when we do not use shared libraries.
5163 X11 libraries may refer to these functions but (we hope) do not
5164 actually call them. */
5184 #endif /* USE_DL_STUBS */
5193 register int length
;
5197 long max_str
= 65535;
5199 while (length
> max_str
) {
5200 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5205 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5207 while (length
-- > 0)
5209 #endif /* not VMS */
5212 #endif /* no bzero */
5213 #endif /* BSTRING */
5215 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5218 /* Saying `void' requires a declaration, above, where bcopy is used
5219 and that declaration causes pain for systems where bcopy is a macro. */
5220 bcopy (b1
, b2
, length
)
5223 register int length
;
5226 long max_str
= 65535;
5228 while (length
> max_str
) {
5229 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5235 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5237 while (length
-- > 0)
5239 #endif /* not VMS */
5241 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5246 bcmp (b1
, b2
, length
) /* This could be a macro! */
5249 register int length
;
5252 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5253 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5255 return STR$
COMPARE (&src1
, &src2
);
5257 while (length
-- > 0)
5262 #endif /* not VMS */
5264 #endif /* no bcmp */
5265 #endif /* not BSTRING */
5267 #ifndef HAVE_STRSIGNAL
5274 if (0 <= code
&& code
< NSIG
)
5277 signame
= sys_errlist
[code
];
5279 /* Cast to suppress warning if the table has const char *. */
5280 signame
= (char *) sys_siglist
[code
];
5286 #endif /* HAVE_STRSIGNAL */
5288 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
5289 (do not change this comment) */