1 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
21 * The exception is that, if you link the GUILE library with other files
22 * to produce an executable, this does not by itself cause the
23 * resulting executable to be covered by the GNU General Public License.
24 * Your use of that executable is in no way restricted on account of
25 * linking the GUILE library code into it.
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
30 * This exception applies only to the code released by the
31 * Free Software Foundation under the name GUILE. If you copy
32 * code from other Free Software Foundation releases into a copy of
33 * GUILE, as the General Public License permits, the exception does
34 * not apply to the code that you add in this way. To avoid misleading
35 * anyone as to the status of such modified files, you must delete
36 * this exception notice from them.
38 * If you write modifications of your own for GUILE, it is your choice
39 * whether to permit this exception to apply to your modifications.
40 * If you do not wish that, delete this exception notice. */
45 /* Make GNU/Linux libc declare everything it has. */
51 #include "libguile/_scm.h"
52 #include "libguile/fports.h"
53 #include "libguile/scmsigs.h"
54 #include "libguile/feature.h"
55 #include "libguile/strings.h"
56 #include "libguile/vectors.h"
57 #include "libguile/lang.h"
59 #include "libguile/validate.h"
60 #include "libguile/posix.h"
66 #ifdef TIME_WITH_SYS_TIME
67 # include <sys/time.h>
71 # include <sys/time.h>
81 extern char *ttyname();
85 #ifdef LIBC_H_WITH_UNISTD_H
89 #include <sys/types.h>
99 #ifdef HAVE_WINSOCK2_H
100 #include <winsock2.h>
104 /* Some defines for Windows here. */
105 # include <process.h>
106 # define pipe(fd) _pipe (fd, 256, O_BINARY)
107 #endif /* __MINGW32__ */
110 # include <sys/wait.h>
113 # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
116 # define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
121 extern char ** environ
;
126 #ifdef HAVE_SYS_UTSNAME_H
127 #include <sys/utsname.h>
130 #ifdef HAVE_SETLOCALE
134 #if HAVE_LIBCRYPT && HAVE_CRYPT_H
138 #if HAVE_SYS_RESOURCE_H
139 # include <sys/resource.h>
143 # include <sys/file.h>
146 /* Some Unix systems don't define these. CPP hair is dangerous, but
147 this seems safe enough... */
164 /* On NextStep, <utime.h> doesn't define struct utime, unless we
165 #define _POSIX_SOURCE before #including it. I think this is less
166 of a kludge than defining struct utimbuf ourselves. */
167 #ifdef UTIMBUF_NEEDS_POSIX
168 #define _POSIX_SOURCE
171 #ifdef HAVE_SYS_UTIME_H
172 #include <sys/utime.h>
179 /* Please don't add any more #includes or #defines here. The hack
180 above means that _POSIX_SOURCE may be #defined, which will
181 encourage header files to do strange things. */
184 SCM_SYMBOL (sym_read_pipe
, "read pipe");
185 SCM_SYMBOL (sym_write_pipe
, "write pipe");
187 SCM_DEFINE (scm_pipe
, "pipe", 0, 0, 0,
189 "Return a newly created pipe: a pair of ports which are linked\n"
190 "together on the local machine. The @emph{car} is the input\n"
191 "port and the @emph{cdr} is the output port. Data written (and\n"
192 "flushed) to the output port can be read from the input port.\n"
193 "Pipes are commonly used for communication with a newly forked\n"
194 "child process. The need to flush the output port can be\n"
195 "avoided by making it unbuffered using @code{setvbuf}.\n"
197 "Writes occur atomically provided the size of the data in bytes\n"
198 "is not greater than the value of @code{PIPE_BUF}. Note that\n"
199 "the output port is likely to block if too much data (typically\n"
200 "equal to @code{PIPE_BUF}) has been written but not yet read\n"
201 "from the input port.")
202 #define FUNC_NAME s_scm_pipe
211 p_rd
= scm_fdes_to_port (fd
[0], "r", sym_read_pipe
);
212 p_wt
= scm_fdes_to_port (fd
[1], "w", sym_write_pipe
);
213 return scm_cons (p_rd
, p_wt
);
218 #ifdef HAVE_GETGROUPS
219 SCM_DEFINE (scm_getgroups
, "getgroups", 0, 0, 0,
221 "Return a vector of integers representing the current\n"
222 "supplementary group IDs.")
223 #define FUNC_NAME s_scm_getgroups
230 ngroups
= getgroups (0, NULL
);
234 size
= ngroups
* sizeof (GETGROUPS_T
);
235 groups
= scm_malloc (size
);
236 getgroups (ngroups
, groups
);
238 result
= scm_c_make_vector (ngroups
, SCM_UNDEFINED
);
241 SCM
* ve
= SCM_WRITABLE_VELTS(result
);
243 while (--ngroups
>= 0)
244 ve
[ngroups
] = SCM_MAKINUM (groups
[ngroups
]);
253 SCM_DEFINE (scm_getpwuid
, "getpw", 0, 1, 0,
255 "Look up an entry in the user database. @var{obj} can be an integer,\n"
256 "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n"
257 "or getpwent respectively.")
258 #define FUNC_NAME s_scm_getpwuid
260 struct passwd
*entry
;
262 SCM result
= scm_c_make_vector (7, SCM_UNSPECIFIED
);
263 if (SCM_UNBNDP (user
) || SCM_FALSEP (user
))
265 SCM_SYSCALL (entry
= getpwent ());
271 else if (SCM_INUMP (user
))
273 entry
= getpwuid (SCM_INUM (user
));
277 SCM_VALIDATE_STRING (1, user
);
278 entry
= getpwnam (SCM_STRING_CHARS (user
));
281 SCM_MISC_ERROR ("entry not found", SCM_EOL
);
283 SCM_VECTOR_SET(result
, 0, scm_makfrom0str (entry
->pw_name
));
284 SCM_VECTOR_SET(result
, 1, scm_makfrom0str (entry
->pw_passwd
));
285 SCM_VECTOR_SET(result
, 2, scm_ulong2num ((unsigned long) entry
->pw_uid
));
286 SCM_VECTOR_SET(result
, 3, scm_ulong2num ((unsigned long) entry
->pw_gid
));
287 SCM_VECTOR_SET(result
, 4, scm_makfrom0str (entry
->pw_gecos
));
289 SCM_VECTOR_SET(result
, 5, scm_makfrom0str (""));
291 SCM_VECTOR_SET(result
, 5, scm_makfrom0str (entry
->pw_dir
));
292 if (!entry
->pw_shell
)
293 SCM_VECTOR_SET(result
, 6, scm_makfrom0str (""));
295 SCM_VECTOR_SET(result
, 6, scm_makfrom0str (entry
->pw_shell
));
299 #endif /* HAVE_GETPWENT */
303 SCM_DEFINE (scm_setpwent
, "setpw", 0, 1, 0,
305 "If called with a true argument, initialize or reset the password data\n"
306 "stream. Otherwise, close the stream. The @code{setpwent} and\n"
307 "@code{endpwent} procedures are implemented on top of this.")
308 #define FUNC_NAME s_scm_setpwent
310 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
314 return SCM_UNSPECIFIED
;
321 /* Combines getgrgid and getgrnam. */
322 SCM_DEFINE (scm_getgrgid
, "getgr", 0, 1, 0,
324 "Look up an entry in the group database. @var{obj} can be an integer,\n"
325 "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n"
326 "or getgrent respectively.")
327 #define FUNC_NAME s_scm_getgrgid
330 SCM result
= scm_c_make_vector (4, SCM_UNSPECIFIED
);
332 if (SCM_UNBNDP (name
) || SCM_FALSEP (name
))
334 SCM_SYSCALL (entry
= getgrent ());
340 else if (SCM_INUMP (name
))
341 SCM_SYSCALL (entry
= getgrgid (SCM_INUM (name
)));
344 SCM_VALIDATE_STRING (1, name
);
345 SCM_SYSCALL (entry
= getgrnam (SCM_STRING_CHARS (name
)));
350 SCM_VECTOR_SET(result
, 0, scm_makfrom0str (entry
->gr_name
));
351 SCM_VECTOR_SET(result
, 1, scm_makfrom0str (entry
->gr_passwd
));
352 SCM_VECTOR_SET(result
, 2, scm_ulong2num ((unsigned long) entry
->gr_gid
));
353 SCM_VECTOR_SET(result
, 3, scm_makfromstrs (-1, entry
->gr_mem
));
360 SCM_DEFINE (scm_setgrent
, "setgr", 0, 1, 0,
362 "If called with a true argument, initialize or reset the group data\n"
363 "stream. Otherwise, close the stream. The @code{setgrent} and\n"
364 "@code{endgrent} procedures are implemented on top of this.")
365 #define FUNC_NAME s_scm_setgrent
367 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
371 return SCM_UNSPECIFIED
;
374 #endif /* HAVE_GETGRENT */
377 SCM_DEFINE (scm_kill
, "kill", 2, 0, 0,
379 "Sends a signal to the specified process or group of processes.\n\n"
380 "@var{pid} specifies the processes to which the signal is sent:\n\n"
382 "@item @var{pid} greater than 0\n"
383 "The process whose identifier is @var{pid}.\n"
384 "@item @var{pid} equal to 0\n"
385 "All processes in the current process group.\n"
386 "@item @var{pid} less than -1\n"
387 "The process group whose identifier is -@var{pid}\n"
388 "@item @var{pid} equal to -1\n"
389 "If the process is privileged, all processes except for some special\n"
390 "system processes. Otherwise, all processes with the current effective\n"
393 "@var{sig} should be specified using a variable corresponding to\n"
394 "the Unix symbolic name, e.g.,\n\n"
399 "Interrupt signal.\n"
401 #define FUNC_NAME s_scm_kill
403 SCM_VALIDATE_INUM (1, pid
);
404 SCM_VALIDATE_INUM (2, sig
);
405 /* Signal values are interned in scm_init_posix(). */
407 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
409 if ((int) SCM_INUM (pid
) == getpid ())
410 if (raise ((int) SCM_INUM (sig
)) != 0)
413 return SCM_UNSPECIFIED
;
418 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
419 (SCM pid
, SCM options
),
420 "This procedure collects status information from a child process which\n"
421 "has terminated or (optionally) stopped. Normally it will\n"
422 "suspend the calling process until this can be done. If more than one\n"
423 "child process is eligible then one will be chosen by the operating system.\n\n"
424 "The value of @var{pid} determines the behaviour:\n\n"
426 "@item @var{pid} greater than 0\n"
427 "Request status information from the specified child process.\n"
428 "@item @var{pid} equal to -1 or WAIT_ANY\n"
429 "Request status information for any child process.\n"
430 "@item @var{pid} equal to 0 or WAIT_MYPGRP\n"
431 "Request status information for any child process in the current process\n"
433 "@item @var{pid} less than -1\n"
434 "Request status information for any child process whose process group ID\n"
437 "The @var{options} argument, if supplied, should be the bitwise OR of the\n"
438 "values of zero or more of the following variables:\n\n"
440 "Return immediately even if there are no child processes to be collected.\n"
442 "@defvar WUNTRACED\n"
443 "Report status information for stopped processes as well as terminated\n"
446 "The return value is a pair containing:\n\n"
449 "The process ID of the child process, or 0 if @code{WNOHANG} was\n"
450 "specified and no process was collected.\n"
452 "The integer status value.\n"
454 #define FUNC_NAME s_scm_waitpid
459 SCM_VALIDATE_INUM (1, pid
);
460 if (SCM_UNBNDP (options
))
464 SCM_VALIDATE_INUM (2, options
);
465 /* Flags are interned in scm_init_posix. */
466 ioptions
= SCM_INUM (options
);
468 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
471 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
474 #endif /* HAVE_WAITPID */
477 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
479 "Return the exit status value, as would be set if a process\n"
480 "ended normally through a call to @code{exit} or @code{_exit},\n"
481 "if any, otherwise @code{#f}.")
482 #define FUNC_NAME s_scm_status_exit_val
486 SCM_VALIDATE_INUM (1, status
);
488 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
489 go figure. SCM_INUM does not yield an lvalue. */
490 lstatus
= SCM_INUM (status
);
491 if (WIFEXITED (lstatus
))
492 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
498 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
500 "Return the signal number which terminated the process, if any,\n"
501 "otherwise @code{#f}.")
502 #define FUNC_NAME s_scm_status_term_sig
506 SCM_VALIDATE_INUM (1, status
);
508 lstatus
= SCM_INUM (status
);
509 if (WIFSIGNALED (lstatus
))
510 return SCM_MAKINUM (WTERMSIG (lstatus
));
516 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
518 "Return the signal number which stopped the process, if any,\n"
519 "otherwise @code{#f}.")
520 #define FUNC_NAME s_scm_status_stop_sig
524 SCM_VALIDATE_INUM (1, status
);
526 lstatus
= SCM_INUM (status
);
527 if (WIFSTOPPED (lstatus
))
528 return SCM_MAKINUM (WSTOPSIG (lstatus
));
533 #endif /* __MINGW32__ */
536 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
538 "Return an integer representing the process ID of the parent\n"
540 #define FUNC_NAME s_scm_getppid
542 return SCM_MAKINUM (0L + getppid ());
545 #endif /* HAVE_GETPPID */
549 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
551 "Return an integer representing the current real user ID.")
552 #define FUNC_NAME s_scm_getuid
554 return SCM_MAKINUM (0L + getuid ());
560 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
562 "Return an integer representing the current real group ID.")
563 #define FUNC_NAME s_scm_getgid
565 return SCM_MAKINUM (0L + getgid ());
571 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
573 "Return an integer representing the current effective user ID.\n"
574 "If the system does not support effective IDs, then the real ID\n"
575 "is returned. @code{(feature? 'EIDs)} reports whether the\n"
576 "system supports effective IDs.")
577 #define FUNC_NAME s_scm_geteuid
580 return SCM_MAKINUM (0L + geteuid ());
582 return SCM_MAKINUM (0L + getuid ());
588 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
590 "Return an integer representing the current effective group ID.\n"
591 "If the system does not support effective IDs, then the real ID\n"
592 "is returned. @code{(feature? 'EIDs)} reports whether the\n"
593 "system supports effective IDs.")
594 #define FUNC_NAME s_scm_getegid
597 return SCM_MAKINUM (0L + getegid ());
599 return SCM_MAKINUM (0L + getgid ());
605 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
607 "Sets both the real and effective user IDs to the integer @var{id}, provided\n"
608 "the process has appropriate privileges.\n"
609 "The return value is unspecified.")
610 #define FUNC_NAME s_scm_setuid
612 SCM_VALIDATE_INUM (1, id
);
613 if (setuid (SCM_INUM (id
)) != 0)
615 return SCM_UNSPECIFIED
;
619 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
621 "Sets both the real and effective group IDs to the integer @var{id}, provided\n"
622 "the process has appropriate privileges.\n"
623 "The return value is unspecified.")
624 #define FUNC_NAME s_scm_setgid
626 SCM_VALIDATE_INUM (1, id
);
627 if (setgid (SCM_INUM (id
)) != 0)
629 return SCM_UNSPECIFIED
;
633 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
635 "Sets the effective user ID to the integer @var{id}, provided the process\n"
636 "has appropriate privileges. If effective IDs are not supported, the\n"
637 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
638 "system supports effective IDs.\n"
639 "The return value is unspecified.")
640 #define FUNC_NAME s_scm_seteuid
644 SCM_VALIDATE_INUM (1, id
);
646 rv
= seteuid (SCM_INUM (id
));
648 rv
= setuid (SCM_INUM (id
));
652 return SCM_UNSPECIFIED
;
655 #endif /* __MINGW32__ */
659 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
661 "Sets the effective group ID to the integer @var{id}, provided the process\n"
662 "has appropriate privileges. If effective IDs are not supported, the\n"
663 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
664 "system supports effective IDs.\n"
665 "The return value is unspecified.")
666 #define FUNC_NAME s_scm_setegid
670 SCM_VALIDATE_INUM (1, id
);
672 rv
= setegid (SCM_INUM (id
));
674 rv
= setgid (SCM_INUM (id
));
678 return SCM_UNSPECIFIED
;
686 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
688 "Return an integer representing the current process group ID.\n"
689 "This is the POSIX definition, not BSD.")
690 #define FUNC_NAME s_scm_getpgrp
693 fn
= (int (*) ()) getpgrp
;
694 return SCM_MAKINUM (fn (0));
697 #endif /* HAVE_GETPGRP */
701 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
703 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n"
704 "@var{pgid} must be integers: they can be zero to indicate the ID of the\n"
706 "Fails on systems that do not support job control.\n"
707 "The return value is unspecified.")
708 #define FUNC_NAME s_scm_setpgid
710 SCM_VALIDATE_INUM (1, pid
);
711 SCM_VALIDATE_INUM (2, pgid
);
712 /* FIXME(?): may be known as setpgrp. */
713 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
715 return SCM_UNSPECIFIED
;
718 #endif /* HAVE_SETPGID */
721 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
723 "Creates a new session. The current process becomes the session leader\n"
724 "and is put in a new process group. The process will be detached\n"
725 "from its controlling terminal if it has one.\n"
726 "The return value is an integer representing the new process group ID.")
727 #define FUNC_NAME s_scm_setsid
729 pid_t sid
= setsid ();
732 return SCM_UNSPECIFIED
;
735 #endif /* HAVE_SETSID */
738 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
740 "Return a string with the name of the serial terminal device\n"
741 "underlying @var{port}.")
742 #define FUNC_NAME s_scm_ttyname
747 port
= SCM_COERCE_OUTPORT (port
);
748 SCM_VALIDATE_OPPORT (1, port
);
749 if (!SCM_FPORTP (port
))
751 fd
= SCM_FPORT_FDES (port
);
752 SCM_SYSCALL (result
= ttyname (fd
));
755 /* result could be overwritten by another call to ttyname */
756 return (scm_makfrom0str (result
));
759 #endif /* HAVE_TTYNAME */
762 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
764 "Return a string containing the file name of the controlling\n"
765 "terminal for the current process.")
766 #define FUNC_NAME s_scm_ctermid
768 char *result
= ctermid (NULL
);
771 return scm_makfrom0str (result
);
774 #endif /* HAVE_CTERMID */
776 #ifdef HAVE_TCGETPGRP
777 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
779 "Return the process group ID of the foreground process group\n"
780 "associated with the terminal open on the file descriptor\n"
781 "underlying @var{port}.\n"
783 "If there is no foreground process group, the return value is a\n"
784 "number greater than 1 that does not match the process group ID\n"
785 "of any existing process group. This can happen if all of the\n"
786 "processes in the job that was formerly the foreground job have\n"
787 "terminated, and no other job has yet been moved into the\n"
789 #define FUNC_NAME s_scm_tcgetpgrp
794 port
= SCM_COERCE_OUTPORT (port
);
796 SCM_VALIDATE_OPFPORT (1, port
);
797 fd
= SCM_FPORT_FDES (port
);
798 if ((pgid
= tcgetpgrp (fd
)) == -1)
800 return SCM_MAKINUM (pgid
);
803 #endif /* HAVE_TCGETPGRP */
805 #ifdef HAVE_TCSETPGRP
806 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
807 (SCM port
, SCM pgid
),
808 "Set the foreground process group ID for the terminal used by the file\n"
809 "descriptor underlying @var{port} to the integer @var{pgid}.\n"
810 "The calling process\n"
811 "must be a member of the same session as @var{pgid} and must have the same\n"
812 "controlling terminal. The return value is unspecified.")
813 #define FUNC_NAME s_scm_tcsetpgrp
817 port
= SCM_COERCE_OUTPORT (port
);
819 SCM_VALIDATE_OPFPORT (1, port
);
820 SCM_VALIDATE_INUM (2, pgid
);
821 fd
= SCM_FPORT_FDES (port
);
822 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
824 return SCM_UNSPECIFIED
;
827 #endif /* HAVE_TCSETPGRP */
829 /* return a newly allocated array of char pointers to each of the strings
830 in args, with a terminating NULL pointer. */
831 /* Note: a similar function is defined in dynl.c, but we don't necessarily
832 want to export it. */
833 static char **allocate_string_pointers (SCM args
)
836 int n_args
= scm_ilength (args
);
839 SCM_ASSERT (n_args
>= 0, args
, SCM_ARGn
, "allocate_string_pointers");
840 result
= (char **) scm_malloc ((n_args
+ 1) * sizeof (char *));
841 result
[n_args
] = NULL
;
842 for (i
= 0; i
< n_args
; i
++)
844 SCM car
= SCM_CAR (args
);
846 if (!SCM_STRINGP (car
))
849 scm_wrong_type_arg ("allocate_string_pointers", SCM_ARGn
, car
);
851 result
[i
] = SCM_STRING_CHARS (SCM_CAR (args
));
852 args
= SCM_CDR (args
);
857 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
858 (SCM filename
, SCM args
),
859 "Executes the file named by @var{path} as a new process image.\n"
860 "The remaining arguments are supplied to the process; from a C program\n"
861 "they are accessible as the @code{argv} argument to @code{main}.\n"
862 "Conventionally the first @var{arg} is the same as @var{path}.\n"
863 "All arguments must be strings.\n\n"
864 "If @var{arg} is missing, @var{path} is executed with a null\n"
865 "argument list, which may have system-dependent side-effects.\n\n"
866 "This procedure is currently implemented using the @code{execv} system\n"
867 "call, but we call it @code{execl} because of its Scheme calling interface.")
868 #define FUNC_NAME s_scm_execl
871 SCM_VALIDATE_STRING (1, filename
);
872 execargv
= allocate_string_pointers (args
);
873 execv (SCM_STRING_CHARS (filename
), execargv
);
880 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
881 (SCM filename
, SCM args
),
882 "Similar to @code{execl}, however if\n"
883 "@var{filename} does not contain a slash\n"
884 "then the file to execute will be located by searching the\n"
885 "directories listed in the @code{PATH} environment variable.\n\n"
886 "This procedure is currently implemented using the @code{execvp} system\n"
887 "call, but we call it @code{execlp} because of its Scheme calling interface.")
888 #define FUNC_NAME s_scm_execlp
891 SCM_VALIDATE_STRING (1, filename
);
892 execargv
= allocate_string_pointers (args
);
893 execvp (SCM_STRING_CHARS (filename
), execargv
);
901 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
907 num_strings
= scm_ilength (envlist
);
908 SCM_ASSERT (num_strings
>= 0, envlist
, arg
, proc
);
909 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
911 scm_memory_error (proc
);
912 for (i
= 0; !SCM_NULL_OR_NIL_P (envlist
); ++i
, envlist
= SCM_CDR (envlist
))
914 SCM str
= SCM_CAR (envlist
);
918 SCM_ASSERT (SCM_STRINGP (str
), envlist
, arg
, proc
);
919 len
= SCM_STRING_LENGTH (str
);
920 src
= SCM_STRING_CHARS (str
);
921 result
[i
] = malloc (len
+ 1);
922 if (result
[i
] == NULL
)
923 scm_memory_error (proc
);
924 memcpy (result
[i
], src
, len
);
931 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
932 (SCM filename
, SCM env
, SCM args
),
933 "Similar to @code{execl}, but the environment of the new process is\n"
934 "specified by @var{env}, which must be a list of strings as returned by the\n"
935 "@code{environ} procedure.\n\n"
936 "This procedure is currently implemented using the @code{execve} system\n"
937 "call, but we call it @code{execle} because of its Scheme calling interface.")
938 #define FUNC_NAME s_scm_execle
943 SCM_VALIDATE_STRING (1, filename
);
945 execargv
= allocate_string_pointers (args
);
946 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
947 execve (SCM_STRING_CHARS (filename
), execargv
, exec_env
);
955 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
957 "Creates a new \"child\" process by duplicating the current \"parent\" process.\n"
958 "In the child the return value is 0. In the parent the return value is\n"
959 "the integer process ID of the child.\n\n"
960 "This procedure has been renamed from @code{fork} to avoid a naming conflict\n"
961 "with the scsh fork.")
962 #define FUNC_NAME s_scm_fork
968 return SCM_MAKINUM (0L+pid
);
971 #endif /* HAVE_FORK */
974 # include "win32-uname.h"
977 #if defined (HAVE_UNAME) || defined (__MINGW32__)
978 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
980 "Return an object with some information about the computer\n"
981 "system the program is running on.")
982 #define FUNC_NAME s_scm_uname
985 SCM result
= scm_c_make_vector (5, SCM_UNSPECIFIED
);
986 if (uname (&buf
) < 0)
988 SCM_VECTOR_SET(result
, 0, scm_makfrom0str (buf
.sysname
));
989 SCM_VECTOR_SET(result
, 1, scm_makfrom0str (buf
.nodename
));
990 SCM_VECTOR_SET(result
, 2, scm_makfrom0str (buf
.release
));
991 SCM_VECTOR_SET(result
, 3, scm_makfrom0str (buf
.version
));
992 SCM_VECTOR_SET(result
, 4, scm_makfrom0str (buf
.machine
));
995 SCM_VECTOR_SET(result, 5, scm_makfrom0str (buf.domainname));
1000 #endif /* HAVE_UNAME */
1002 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
1004 "If @var{env} is omitted, return the current environment (in the\n"
1005 "Unix sense) as a list of strings. Otherwise set the current\n"
1006 "environment, which is also the default environment for child\n"
1007 "processes, to the supplied list of strings. Each member of\n"
1008 "@var{env} should be of the form @code{NAME=VALUE} and values of\n"
1009 "@code{NAME} should not be duplicated. If @var{env} is supplied\n"
1010 "then the return value is unspecified.")
1011 #define FUNC_NAME s_scm_environ
1013 if (SCM_UNBNDP (env
))
1014 return scm_makfromstrs (-1, environ
);
1019 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
1020 /* Free the old environment, except when called for the first
1025 static int first
= 1;
1028 for (ep
= environ
; *ep
!= NULL
; ep
++)
1030 free ((char *) environ
);
1034 environ
= new_environ
;
1035 return SCM_UNSPECIFIED
;
1042 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1044 "Return a name in the file system that does not match any\n"
1045 "existing file. However there is no guarantee that another\n"
1046 "process will not create the file after @code{tmpnam} is called.\n"
1047 "Care should be taken if opening the file, e.g., use the\n"
1048 "@code{O_EXCL} open flag or use @code{mkstemp!} instead.")
1049 #define FUNC_NAME s_scm_tmpnam
1051 char name
[L_tmpnam
];
1054 SCM_SYSCALL (rv
= tmpnam (name
));
1056 /* not SCM_SYSERROR since errno probably not set. */
1057 SCM_MISC_ERROR ("tmpnam failed", SCM_EOL
);
1058 return scm_makfrom0str (name
);
1064 #ifndef HAVE_MKSTEMP
1065 extern int mkstemp (char *);
1068 SCM_DEFINE (scm_mkstemp
, "mkstemp!", 1, 0, 0,
1070 "Create a new unique file in the file system and returns a new\n"
1071 "buffered port open for reading and writing to the file.\n"
1072 "@var{tmpl} is a string specifying where the file should be\n"
1073 "created: it must end with @code{XXXXXX} and will be changed in\n"
1074 "place to return the name of the temporary file.")
1075 #define FUNC_NAME s_scm_mkstemp
1080 SCM_VALIDATE_STRING_COPY (1, tmpl
, c_tmpl
);
1081 SCM_SYSCALL (rv
= mkstemp (c_tmpl
));
1084 return scm_fdes_to_port (rv
, "w+", tmpl
);
1088 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1089 (SCM pathname
, SCM actime
, SCM modtime
),
1090 "@code{utime} sets the access and modification times for the\n"
1091 "file named by @var{path}. If @var{actime} or @var{modtime} is\n"
1092 "not supplied, then the current time is used. @var{actime} and\n"
1093 "@var{modtime} must be integer time values as returned by the\n"
1094 "@code{current-time} procedure.\n"
1096 "(utime \"foo\" (- (current-time) 3600))\n"
1098 "will set the access time to one hour in the past and the\n"
1099 "modification time to the current time.")
1100 #define FUNC_NAME s_scm_utime
1103 struct utimbuf utm_tmp
;
1105 SCM_VALIDATE_STRING (1, pathname
);
1106 if (SCM_UNBNDP (actime
))
1107 SCM_SYSCALL (time (&utm_tmp
.actime
));
1109 utm_tmp
.actime
= SCM_NUM2ULONG (2, actime
);
1111 if (SCM_UNBNDP (modtime
))
1112 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1114 utm_tmp
.modtime
= SCM_NUM2ULONG (3, modtime
);
1116 SCM_SYSCALL (rv
= utime (SCM_STRING_CHARS (pathname
), &utm_tmp
));
1119 return SCM_UNSPECIFIED
;
1123 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1124 (SCM path
, SCM how
),
1125 "Return @code{#t} if @var{path} corresponds to an existing file\n"
1126 "and the current process has the type of access specified by\n"
1127 "@var{how}, otherwise @code{#f}. @var{how} should be specified\n"
1128 "using the values of the variables listed below. Multiple\n"
1129 "values can be combined using a bitwise or, in which case\n"
1130 "@code{#t} will only be returned if all accesses are granted.\n"
1132 "Permissions are checked using the real id of the current\n"
1133 "process, not the effective id, although it's the effective id\n"
1134 "which determines whether the access would actually be granted.\n"
1137 "test for read permission.\n"
1140 "test for write permission.\n"
1143 "test for execute permission.\n"
1146 "test for existence of the file.\n"
1148 #define FUNC_NAME s_scm_access
1152 SCM_VALIDATE_STRING (1, path
);
1153 SCM_VALIDATE_INUM (2, how
);
1154 rv
= access (SCM_STRING_CHARS (path
), SCM_INUM (how
));
1155 return SCM_NEGATE_BOOL(rv
);
1159 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1161 "Return an integer representing the current process ID.")
1162 #define FUNC_NAME s_scm_getpid
1164 return SCM_MAKINUM ((unsigned long) getpid ());
1168 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1170 "Modifies the environment of the current process, which is\n"
1171 "also the default environment inherited by child processes.\n\n"
1172 "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n"
1173 "directly into the environment, replacing any existing environment string\n"
1175 "name matching @code{NAME}. If @var{string} does not contain an equal\n"
1176 "sign, then any existing string with name matching @var{string} will\n"
1178 "The return value is unspecified.")
1179 #define FUNC_NAME s_scm_putenv
1184 SCM_VALIDATE_STRING (1, str
);
1186 if (strchr (SCM_STRING_CHARS (str
), '=') == NULL
)
1188 /* No '=' in argument means we should remove the variable from
1189 the environment. Not all putenvs understand this. To be
1190 safe, we do it explicitely using unsetenv. */
1191 unsetenv (SCM_STRING_CHARS (str
));
1195 /* must make a new copy to be left in the environment, safe from gc. */
1196 ptr
= malloc (SCM_STRING_LENGTH (str
) + 1);
1199 strncpy (ptr
, SCM_STRING_CHARS (str
), SCM_STRING_LENGTH (str
));
1200 ptr
[SCM_STRING_LENGTH (str
)] = 0;
1205 return SCM_UNSPECIFIED
;
1209 #ifdef HAVE_SETLOCALE
1210 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1211 (SCM category
, SCM locale
),
1212 "If @var{locale} is omitted, return the current value of the\n"
1213 "specified locale category as a system-dependent string.\n"
1214 "@var{category} should be specified using the values\n"
1215 "@code{LC_COLLATE}, @code{LC_ALL} etc.\n"
1217 "Otherwise the specified locale category is set to the string\n"
1218 "@var{locale} and the new value is returned as a\n"
1219 "system-dependent string. If @var{locale} is an empty string,\n"
1220 "the locale will be set using environment variables.")
1221 #define FUNC_NAME s_scm_setlocale
1226 SCM_VALIDATE_INUM (1, category
);
1227 if (SCM_UNBNDP (locale
))
1233 SCM_VALIDATE_STRING (2, locale
);
1234 clocale
= SCM_STRING_CHARS (locale
);
1237 rv
= setlocale (SCM_INUM (category
), clocale
);
1240 return scm_makfrom0str (rv
);
1243 #endif /* HAVE_SETLOCALE */
1246 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1247 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1248 "Creates a new special file, such as a file corresponding to a device.\n"
1249 "@var{path} specifies the name of the file. @var{type} should\n"
1250 "be one of the following symbols:\n"
1251 "regular, directory, symlink, block-special, char-special,\n"
1252 "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n"
1253 "@var{dev} (an integer) specifies which device the special file refers\n"
1254 "to. Its exact interpretation depends on the kind of special file\n"
1255 "being created.\n\n"
1258 "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))\n"
1260 "The return value is unspecified.")
1261 #define FUNC_NAME s_scm_mknod
1267 SCM_VALIDATE_STRING (1, path
);
1268 SCM_VALIDATE_SYMBOL (2, type
);
1269 SCM_VALIDATE_INUM (3, perms
);
1270 SCM_VALIDATE_INUM (4, dev
);
1272 p
= SCM_SYMBOL_CHARS (type
);
1273 if (strcmp (p
, "regular") == 0)
1275 else if (strcmp (p
, "directory") == 0)
1277 else if (strcmp (p
, "symlink") == 0)
1279 else if (strcmp (p
, "block-special") == 0)
1281 else if (strcmp (p
, "char-special") == 0)
1283 else if (strcmp (p
, "fifo") == 0)
1286 else if (strcmp (p
, "socket") == 0)
1290 SCM_OUT_OF_RANGE (2, type
);
1292 SCM_SYSCALL (val
= mknod (SCM_STRING_CHARS (path
), ctype
| SCM_INUM (perms
),
1296 return SCM_UNSPECIFIED
;
1299 #endif /* HAVE_MKNOD */
1302 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1304 "Increment the priority of the current process by @var{incr}. A higher\n"
1305 "priority value means that the process runs less often.\n"
1306 "The return value is unspecified.")
1307 #define FUNC_NAME s_scm_nice
1309 SCM_VALIDATE_INUM (1, incr
);
1310 if (nice(SCM_INUM(incr
)) != 0)
1312 return SCM_UNSPECIFIED
;
1315 #endif /* HAVE_NICE */
1318 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1320 "Flush the operating system disk buffers.\n"
1321 "The return value is unspecified.")
1322 #define FUNC_NAME s_scm_sync
1325 return SCM_UNSPECIFIED
;
1328 #endif /* HAVE_SYNC */
1330 #if HAVE_LIBCRYPT && HAVE_CRYPT_H
1331 SCM_DEFINE (scm_crypt
, "crypt", 2, 0, 0,
1332 (SCM key
, SCM salt
),
1333 "Encrypt @var{key} using @var{salt} as the salt value to the\n"
1334 "crypt(3) library call.")
1335 #define FUNC_NAME s_scm_crypt
1339 SCM_VALIDATE_STRING (1, key
);
1340 SCM_VALIDATE_STRING (2, salt
);
1342 p
= crypt (SCM_STRING_CHARS (key
), SCM_STRING_CHARS (salt
));
1343 return scm_makfrom0str (p
);
1346 #endif /* HAVE_LIBCRYPT && HAVE_CRYPT_H */
1349 SCM_DEFINE (scm_chroot
, "chroot", 1, 0, 0,
1351 "Change the root directory to that specified in @var{path}.\n"
1352 "This directory will be used for path names beginning with\n"
1353 "@file{/}. The root directory is inherited by all children\n"
1354 "of the current process. Only the superuser may change the\n"
1356 #define FUNC_NAME s_scm_chroot
1358 SCM_VALIDATE_STRING (1, path
);
1360 if (chroot (SCM_STRING_CHARS (path
)) == -1)
1362 return SCM_UNSPECIFIED
;
1365 #endif /* HAVE_CHROOT */
1369 /* Wrapper function to supplying `getlogin()' under Windows. */
1370 static char * getlogin (void)
1372 static char user
[256];
1373 static unsigned long len
= 256;
1375 if (!GetUserName (user
, &len
))
1379 #endif /* __MINGW32__ */
1382 #if defined (HAVE_GETLOGIN) || defined (__MINGW32__)
1383 SCM_DEFINE (scm_getlogin
, "getlogin", 0, 0, 0,
1385 "Return a string containing the name of the user logged in on\n"
1386 "the controlling terminal of the process, or @code{#f} if this\n"
1387 "information cannot be obtained.")
1388 #define FUNC_NAME s_scm_getlogin
1395 return scm_makfrom0str (p
);
1398 #endif /* HAVE_GETLOGIN */
1401 SCM_DEFINE (scm_cuserid
, "cuserid", 0, 0, 0,
1403 "Return a string containing a user name associated with the\n"
1404 "effective user id of the process. Return @code{#f} if this\n"
1405 "information cannot be obtained.")
1406 #define FUNC_NAME s_scm_cuserid
1413 return scm_makfrom0str (p
);
1416 #endif /* HAVE_CUSERID */
1418 #if HAVE_GETPRIORITY
1419 SCM_DEFINE (scm_getpriority
, "getpriority", 2, 0, 0,
1420 (SCM which
, SCM who
),
1421 "Return the scheduling priority of the process, process group\n"
1422 "or user, as indicated by @var{which} and @var{who}. @var{which}\n"
1423 "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n"
1424 "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n"
1425 "@var{which} (a process identifier for @code{PRIO_PROCESS},\n"
1426 "process group identifier for @code{PRIO_PGRP}, and a user\n"
1427 "identifier for @code{PRIO_USER}. A zero value of @var{who}\n"
1428 "denotes the current process, process group, or user. Return\n"
1429 "the highest priority (lowest numerical value) of any of the\n"
1430 "specified processes.")
1431 #define FUNC_NAME s_scm_getpriority
1433 int cwhich
, cwho
, ret
;
1435 SCM_VALIDATE_INUM_COPY (1, which
, cwhich
);
1436 SCM_VALIDATE_INUM_COPY (2, who
, cwho
);
1438 /* We have to clear errno and examine it later, because -1 is a
1439 legal return value for getpriority(). */
1441 ret
= getpriority (cwhich
, cwho
);
1444 return SCM_MAKINUM (ret
);
1447 #endif /* HAVE_GETPRIORITY */
1449 #if HAVE_SETPRIORITY
1450 SCM_DEFINE (scm_setpriority
, "setpriority", 3, 0, 0,
1451 (SCM which
, SCM who
, SCM prio
),
1452 "Set the scheduling priority of the process, process group\n"
1453 "or user, as indicated by @var{which} and @var{who}. @var{which}\n"
1454 "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n"
1455 "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n"
1456 "@var{which} (a process identifier for @code{PRIO_PROCESS},\n"
1457 "process group identifier for @code{PRIO_PGRP}, and a user\n"
1458 "identifier for @code{PRIO_USER}. A zero value of @var{who}\n"
1459 "denotes the current process, process group, or user.\n"
1460 "@var{prio} is a value in the range -20 and 20, the default\n"
1461 "priority is 0; lower priorities cause more favorable\n"
1462 "scheduling. Sets the priority of all of the specified\n"
1463 "processes. Only the super-user may lower priorities.\n"
1464 "The return value is not specified.")
1465 #define FUNC_NAME s_scm_setpriority
1467 int cwhich
, cwho
, cprio
;
1469 SCM_VALIDATE_INUM_COPY (1, which
, cwhich
);
1470 SCM_VALIDATE_INUM_COPY (2, who
, cwho
);
1471 SCM_VALIDATE_INUM_COPY (3, prio
, cprio
);
1473 if (setpriority (cwhich
, cwho
, cprio
) == -1)
1475 return SCM_UNSPECIFIED
;
1478 #endif /* HAVE_SETPRIORITY */
1481 SCM_DEFINE (scm_getpass
, "getpass", 1, 0, 0,
1483 "Display @var{prompt} to the standard error output and read\n"
1484 "a password from @file{/dev/tty}. If this file is not\n"
1485 "accessible, it reads from standard input. The password may be\n"
1486 "up to 127 characters in length. Additional characters and the\n"
1487 "terminating newline character are discarded. While reading\n"
1488 "the password, echoing and the generation of signals by special\n"
1489 "characters is disabled.")
1490 #define FUNC_NAME s_scm_getpass
1495 SCM_VALIDATE_STRING (1, prompt
);
1497 p
= getpass(SCM_STRING_CHARS (prompt
));
1498 passwd
= scm_makfrom0str (p
);
1500 /* Clear out the password in the static buffer. */
1501 memset (p
, 0, strlen (p
));
1506 #endif /* HAVE_GETPASS */
1508 /* Wrapper function for flock() support under M$-Windows. */
1511 # include <sys/locking.h>
1514 /* Current MinGW package fails to define this. *sigh* */
1515 # define _LK_UNLCK 0
1522 static int flock (int fd
, int operation
)
1527 /* Disable invalid arguments. */
1528 if (((operation
& (LOCK_EX
| LOCK_SH
)) == (LOCK_EX
| LOCK_SH
)) ||
1529 ((operation
& (LOCK_EX
| LOCK_UN
)) == (LOCK_EX
| LOCK_UN
)) ||
1530 ((operation
& (LOCK_SH
| LOCK_UN
)) == (LOCK_SH
| LOCK_UN
)))
1536 /* Determine mode of operation and discard unsupported ones. */
1537 if (operation
== (LOCK_NB
| LOCK_EX
))
1538 operation
= _LK_NBLCK
;
1539 else if (operation
& LOCK_UN
)
1540 operation
= _LK_UNLCK
;
1541 else if (operation
== LOCK_EX
)
1542 operation
= _LK_LOCK
;
1549 /* Save current file pointer and seek to beginning. */
1550 if ((pos
= lseek (fd
, 0, SEEK_CUR
)) == -1 || (len
= filelength (fd
)) == -1)
1552 lseek (fd
, 0L, SEEK_SET
);
1554 /* Deadlock if necessary. */
1557 ret
= _locking (fd
, operation
, len
);
1559 while (ret
== -1 && errno
== EDEADLOCK
);
1561 /* Produce meaningful error message. */
1562 if (errno
== EACCES
&& operation
== _LK_NBLCK
)
1567 /* Return to saved file position pointer. */
1568 lseek (fd
, pos
, SEEK_SET
);
1572 #endif /* __MINGW32__ */
1574 #if HAVE_FLOCK || defined (__MINGW32__)
1575 SCM_DEFINE (scm_flock
, "flock", 2, 0, 0,
1576 (SCM file
, SCM operation
),
1577 "Apply or remove an advisory lock on an open file.\n"
1578 "@var{operation} specifies the action to be done:\n"
1581 "Shared lock. More than one process may hold a shared lock\n"
1582 "for a given file at a given time.\n"
1584 "Exclusive lock. Only one process may hold an exclusive lock\n"
1585 "for a given file at a given time.\n"
1587 "Unlock the file.\n"
1589 "Don't block when locking. May be specified by bitwise OR'ing\n"
1590 "it to one of the other operations.\n"
1592 "The return value is not specified. @var{file} may be an open\n"
1593 "file descriptor or an open file descriptor port.")
1594 #define FUNC_NAME s_scm_flock
1596 int coperation
, fdes
;
1598 if (SCM_INUMP (file
))
1599 fdes
= SCM_INUM (file
);
1602 SCM_VALIDATE_OPFPORT (2, file
);
1604 fdes
= SCM_FPORT_FDES (file
);
1606 SCM_VALIDATE_INUM_COPY (2, operation
, coperation
);
1607 if (flock (fdes
, coperation
) == -1)
1609 return SCM_UNSPECIFIED
;
1612 #endif /* HAVE_FLOCK */
1614 #if HAVE_SETHOSTNAME
1615 SCM_DEFINE (scm_sethostname
, "sethostname", 1, 0, 0,
1617 "Set the host name of the current processor to @var{name}. May\n"
1618 "only be used by the superuser. The return value is not\n"
1620 #define FUNC_NAME s_scm_sethostname
1622 SCM_VALIDATE_STRING (1, name
);
1624 if (sethostname (SCM_STRING_CHARS (name
), SCM_STRING_LENGTH (name
)) == -1)
1626 return SCM_UNSPECIFIED
;
1629 #endif /* HAVE_SETHOSTNAME */
1631 #if HAVE_GETHOSTNAME
1632 SCM_DEFINE (scm_gethostname
, "gethostname", 0, 0, 0,
1634 "Return the host name of the current processor.")
1635 #define FUNC_NAME s_scm_gethostname
1637 /* 256 is for Solaris, under Linux ENAMETOOLONG is returned if not
1640 char *p
= scm_malloc (len
);
1643 res
= gethostname (p
, len
);
1644 while (res
== -1 && errno
== ENAMETOOLONG
)
1646 p
= scm_realloc (p
, len
* 2);
1648 res
= gethostname (p
, len
);
1655 name
= scm_makfrom0str (p
);
1660 #endif /* HAVE_GETHOSTNAME */
1665 scm_add_feature ("posix");
1667 scm_add_feature ("EIDs");
1670 scm_c_define ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1673 scm_c_define ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1676 scm_c_define ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1679 scm_c_define ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1682 /* access() symbols. */
1683 scm_c_define ("R_OK", SCM_MAKINUM (R_OK
));
1684 scm_c_define ("W_OK", SCM_MAKINUM (W_OK
));
1685 scm_c_define ("X_OK", SCM_MAKINUM (X_OK
));
1686 scm_c_define ("F_OK", SCM_MAKINUM (F_OK
));
1689 scm_c_define ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1692 scm_c_define ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1695 scm_c_define ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1698 scm_c_define ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1701 scm_c_define ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1704 scm_c_define ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1707 scm_c_define ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1710 scm_c_define ("PIPE_BUF", scm_long2num (PIPE_BUF
));
1714 scm_c_define ("PRIO_PROCESS", SCM_MAKINUM (PRIO_PROCESS
));
1717 scm_c_define ("PRIO_PGRP", SCM_MAKINUM (PRIO_PGRP
));
1720 scm_c_define ("PRIO_USER", SCM_MAKINUM (PRIO_USER
));
1724 scm_c_define ("LOCK_SH", SCM_MAKINUM (LOCK_SH
));
1727 scm_c_define ("LOCK_EX", SCM_MAKINUM (LOCK_EX
));
1730 scm_c_define ("LOCK_UN", SCM_MAKINUM (LOCK_UN
));
1733 scm_c_define ("LOCK_NB", SCM_MAKINUM (LOCK_NB
));
1736 #include "libguile/cpp_sig_symbols.c"
1737 #include "libguile/posix.x"