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 "supplimentary 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 ans
= scm_c_make_vector (ngroups
, SCM_UNDEFINED
);
239 while (--ngroups
>= 0)
240 SCM_VELTS (ans
) [ngroups
] = SCM_MAKINUM (groups
[ngroups
]);
249 SCM_DEFINE (scm_getpwuid
, "getpw", 0, 1, 0,
251 "Look up an entry in the user database. @var{obj} can be an integer,\n"
252 "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n"
253 "or getpwent respectively.")
254 #define FUNC_NAME s_scm_getpwuid
257 struct passwd
*entry
;
260 result
= scm_c_make_vector (7, SCM_UNSPECIFIED
);
261 ve
= SCM_VELTS (result
);
262 if (SCM_UNBNDP (user
) || SCM_FALSEP (user
))
264 SCM_SYSCALL (entry
= getpwent ());
270 else if (SCM_INUMP (user
))
272 entry
= getpwuid (SCM_INUM (user
));
276 SCM_VALIDATE_STRING (1, user
);
277 entry
= getpwnam (SCM_STRING_CHARS (user
));
280 SCM_MISC_ERROR ("entry not found", SCM_EOL
);
282 ve
[0] = scm_makfrom0str (entry
->pw_name
);
283 ve
[1] = scm_makfrom0str (entry
->pw_passwd
);
284 ve
[2] = scm_ulong2num ((unsigned long) entry
->pw_uid
);
285 ve
[3] = scm_ulong2num ((unsigned long) entry
->pw_gid
);
286 ve
[4] = scm_makfrom0str (entry
->pw_gecos
);
288 ve
[5] = scm_makfrom0str ("");
290 ve
[5] = scm_makfrom0str (entry
->pw_dir
);
291 if (!entry
->pw_shell
)
292 ve
[6] = scm_makfrom0str ("");
294 ve
[6] = scm_makfrom0str (entry
->pw_shell
);
298 #endif /* HAVE_GETPWENT */
302 SCM_DEFINE (scm_setpwent
, "setpw", 0, 1, 0,
304 "If called with a true argument, initialize or reset the password data\n"
305 "stream. Otherwise, close the stream. The @code{setpwent} and\n"
306 "@code{endpwent} procedures are implemented on top of this.")
307 #define FUNC_NAME s_scm_setpwent
309 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
313 return SCM_UNSPECIFIED
;
320 /* Combines getgrgid and getgrnam. */
321 SCM_DEFINE (scm_getgrgid
, "getgr", 0, 1, 0,
323 "Look up an entry in the group database. @var{obj} can be an integer,\n"
324 "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n"
325 "or getgrent respectively.")
326 #define FUNC_NAME s_scm_getgrgid
331 result
= scm_c_make_vector (4, SCM_UNSPECIFIED
);
332 ve
= SCM_VELTS (result
);
333 if (SCM_UNBNDP (name
) || SCM_FALSEP (name
))
335 SCM_SYSCALL (entry
= getgrent ());
341 else if (SCM_INUMP (name
))
342 SCM_SYSCALL (entry
= getgrgid (SCM_INUM (name
)));
345 SCM_VALIDATE_STRING (1, name
);
346 SCM_SYSCALL (entry
= getgrnam (SCM_STRING_CHARS (name
)));
351 ve
[0] = scm_makfrom0str (entry
->gr_name
);
352 ve
[1] = scm_makfrom0str (entry
->gr_passwd
);
353 ve
[2] = scm_ulong2num ((unsigned long) entry
->gr_gid
);
354 ve
[3] = scm_makfromstrs (-1, entry
->gr_mem
);
361 SCM_DEFINE (scm_setgrent
, "setgr", 0, 1, 0,
363 "If called with a true argument, initialize or reset the group data\n"
364 "stream. Otherwise, close the stream. The @code{setgrent} and\n"
365 "@code{endgrent} procedures are implemented on top of this.")
366 #define FUNC_NAME s_scm_setgrent
368 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
372 return SCM_UNSPECIFIED
;
375 #endif /* HAVE_GETGRENT */
378 SCM_DEFINE (scm_kill
, "kill", 2, 0, 0,
380 "Sends a signal to the specified process or group of processes.\n\n"
381 "@var{pid} specifies the processes to which the signal is sent:\n\n"
383 "@item @var{pid} greater than 0\n"
384 "The process whose identifier is @var{pid}.\n"
385 "@item @var{pid} equal to 0\n"
386 "All processes in the current process group.\n"
387 "@item @var{pid} less than -1\n"
388 "The process group whose identifier is -@var{pid}\n"
389 "@item @var{pid} equal to -1\n"
390 "If the process is privileged, all processes except for some special\n"
391 "system processes. Otherwise, all processes with the current effective\n"
394 "@var{sig} should be specified using a variable corresponding to\n"
395 "the Unix symbolic name, e.g.,\n\n"
400 "Interrupt signal.\n"
402 #define FUNC_NAME s_scm_kill
404 SCM_VALIDATE_INUM (1,pid
);
405 SCM_VALIDATE_INUM (2,sig
);
406 /* Signal values are interned in scm_init_posix(). */
408 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
410 if ((int) SCM_INUM (pid
) == getpid ())
411 if (raise ((int) SCM_INUM (sig
)) != 0)
414 return SCM_UNSPECIFIED
;
419 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
420 (SCM pid
, SCM options
),
421 "This procedure collects status information from a child process which\n"
422 "has terminated or (optionally) stopped. Normally it will\n"
423 "suspend the calling process until this can be done. If more than one\n"
424 "child process is eligible then one will be chosen by the operating system.\n\n"
425 "The value of @var{pid} determines the behaviour:\n\n"
427 "@item @var{pid} greater than 0\n"
428 "Request status information from the specified child process.\n"
429 "@item @var{pid} equal to -1 or WAIT_ANY\n"
430 "Request status information for any child process.\n"
431 "@item @var{pid} equal to 0 or WAIT_MYPGRP\n"
432 "Request status information for any child process in the current process\n"
434 "@item @var{pid} less than -1\n"
435 "Request status information for any child process whose process group ID\n"
438 "The @var{options} argument, if supplied, should be the bitwise OR of the\n"
439 "values of zero or more of the following variables:\n\n"
441 "Return immediately even if there are no child processes to be collected.\n"
443 "@defvar WUNTRACED\n"
444 "Report status information for stopped processes as well as terminated\n"
447 "The return value is a pair containing:\n\n"
450 "The process ID of the child process, or 0 if @code{WNOHANG} was\n"
451 "specified and no process was collected.\n"
453 "The integer status value.\n"
455 #define FUNC_NAME s_scm_waitpid
460 SCM_VALIDATE_INUM (1,pid
);
461 if (SCM_UNBNDP (options
))
465 SCM_VALIDATE_INUM (2,options
);
466 /* Flags are interned in scm_init_posix. */
467 ioptions
= SCM_INUM (options
);
469 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
472 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
475 #endif /* HAVE_WAITPID */
478 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
480 "Return the exit status value, as would be set if a process\n"
481 "ended normally through a call to @code{exit} or @code{_exit},\n"
482 "if any, otherwise @code{#f}.")
483 #define FUNC_NAME s_scm_status_exit_val
487 SCM_VALIDATE_INUM (1,status
);
489 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
490 go figure. SCM_INUM does not yield an lvalue. */
491 lstatus
= SCM_INUM (status
);
492 if (WIFEXITED (lstatus
))
493 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
499 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
501 "Return the signal number which terminated the process, if any,\n"
502 "otherwise @code{#f}.")
503 #define FUNC_NAME s_scm_status_term_sig
507 SCM_VALIDATE_INUM (1,status
);
509 lstatus
= SCM_INUM (status
);
510 if (WIFSIGNALED (lstatus
))
511 return SCM_MAKINUM (WTERMSIG (lstatus
));
517 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
519 "Return the signal number which stopped the process, if any,\n"
520 "otherwise @code{#f}.")
521 #define FUNC_NAME s_scm_status_stop_sig
525 SCM_VALIDATE_INUM (1,status
);
527 lstatus
= SCM_INUM (status
);
528 if (WIFSTOPPED (lstatus
))
529 return SCM_MAKINUM (WSTOPSIG (lstatus
));
534 #endif /* __MINGW32__ */
537 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
539 "Return an integer representing the process ID of the parent\n"
541 #define FUNC_NAME s_scm_getppid
543 return SCM_MAKINUM (0L + getppid ());
546 #endif /* HAVE_GETPPID */
550 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
552 "Return an integer representing the current real user ID.")
553 #define FUNC_NAME s_scm_getuid
555 return SCM_MAKINUM (0L + getuid ());
561 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
563 "Return an integer representing the current real group ID.")
564 #define FUNC_NAME s_scm_getgid
566 return SCM_MAKINUM (0L + getgid ());
572 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
574 "Return an integer representing the current effective user ID.\n"
575 "If the system does not support effective IDs, then the real ID\n"
576 "is returned. @code{(feature? 'EIDs)} reports whether the\n"
577 "system supports effective IDs.")
578 #define FUNC_NAME s_scm_geteuid
581 return SCM_MAKINUM (0L + geteuid ());
583 return SCM_MAKINUM (0L + getuid ());
589 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
591 "Return an integer representing the current effective group ID.\n"
592 "If the system does not support effective IDs, then the real ID\n"
593 "is returned. @code{(feature? 'EIDs)} reports whether the\n"
594 "system supports effective IDs.")
595 #define FUNC_NAME s_scm_getegid
598 return SCM_MAKINUM (0L + getegid ());
600 return SCM_MAKINUM (0L + getgid ());
606 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
608 "Sets both the real and effective user IDs to the integer @var{id}, provided\n"
609 "the process has appropriate privileges.\n"
610 "The return value is unspecified.")
611 #define FUNC_NAME s_scm_setuid
613 SCM_VALIDATE_INUM (1,id
);
614 if (setuid (SCM_INUM (id
)) != 0)
616 return SCM_UNSPECIFIED
;
620 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
622 "Sets both the real and effective group IDs to the integer @var{id}, provided\n"
623 "the process has appropriate privileges.\n"
624 "The return value is unspecified.")
625 #define FUNC_NAME s_scm_setgid
627 SCM_VALIDATE_INUM (1,id
);
628 if (setgid (SCM_INUM (id
)) != 0)
630 return SCM_UNSPECIFIED
;
634 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
636 "Sets the effective user ID to the integer @var{id}, provided the process\n"
637 "has appropriate privileges. If effective IDs are not supported, the\n"
638 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
639 "system supports effective IDs.\n"
640 "The return value is unspecified.")
641 #define FUNC_NAME s_scm_seteuid
645 SCM_VALIDATE_INUM (1,id
);
647 rv
= seteuid (SCM_INUM (id
));
649 rv
= setuid (SCM_INUM (id
));
653 return SCM_UNSPECIFIED
;
656 #endif /* __MINGW32__ */
660 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
662 "Sets the effective group ID to the integer @var{id}, provided the process\n"
663 "has appropriate privileges. If effective IDs are not supported, the\n"
664 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
665 "system supports effective IDs.\n"
666 "The return value is unspecified.")
667 #define FUNC_NAME s_scm_setegid
671 SCM_VALIDATE_INUM (1,id
);
673 rv
= setegid (SCM_INUM (id
));
675 rv
= setgid (SCM_INUM (id
));
679 return SCM_UNSPECIFIED
;
687 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
689 "Return an integer representing the current process group ID.\n"
690 "This is the POSIX definition, not BSD.")
691 #define FUNC_NAME s_scm_getpgrp
694 fn
= (int (*) ()) getpgrp
;
695 return SCM_MAKINUM (fn (0));
698 #endif /* HAVE_GETPGRP */
702 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
704 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n"
705 "@var{pgid} must be integers: they can be zero to indicate the ID of the\n"
707 "Fails on systems that do not support job control.\n"
708 "The return value is unspecified.")
709 #define FUNC_NAME s_scm_setpgid
711 SCM_VALIDATE_INUM (1,pid
);
712 SCM_VALIDATE_INUM (2,pgid
);
713 /* FIXME(?): may be known as setpgrp. */
714 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
716 return SCM_UNSPECIFIED
;
719 #endif /* HAVE_SETPGID */
722 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
724 "Creates a new session. The current process becomes the session leader\n"
725 "and is put in a new process group. The process will be detached\n"
726 "from its controlling terminal if it has one.\n"
727 "The return value is an integer representing the new process group ID.")
728 #define FUNC_NAME s_scm_setsid
730 pid_t sid
= setsid ();
733 return SCM_UNSPECIFIED
;
736 #endif /* HAVE_SETSID */
739 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
741 "Return a string with the name of the serial terminal device\n"
742 "underlying @var{port}.")
743 #define FUNC_NAME s_scm_ttyname
748 port
= SCM_COERCE_OUTPORT (port
);
749 SCM_VALIDATE_OPPORT (1,port
);
750 if (!SCM_FPORTP (port
))
752 fd
= SCM_FPORT_FDES (port
);
753 SCM_SYSCALL (ans
= ttyname (fd
));
756 /* ans could be overwritten by another call to ttyname */
757 return (scm_makfrom0str (ans
));
760 #endif /* HAVE_TTYNAME */
763 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
765 "Return a string containing the file name of the controlling\n"
766 "terminal for the current process.")
767 #define FUNC_NAME s_scm_ctermid
769 char *result
= ctermid (NULL
);
772 return scm_makfrom0str (result
);
775 #endif /* HAVE_CTERMID */
777 #ifdef HAVE_TCGETPGRP
778 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
780 "Return the process group ID of the foreground process group\n"
781 "associated with the terminal open on the file descriptor\n"
782 "underlying @var{port}.\n"
784 "If there is no foreground process group, the return value is a\n"
785 "number greater than 1 that does not match the process group ID\n"
786 "of any existing process group. This can happen if all of the\n"
787 "processes in the job that was formerly the foreground job have\n"
788 "terminated, and no other job has yet been moved into the\n"
790 #define FUNC_NAME s_scm_tcgetpgrp
795 port
= SCM_COERCE_OUTPORT (port
);
797 SCM_VALIDATE_OPFPORT (1,port
);
798 fd
= SCM_FPORT_FDES (port
);
799 if ((pgid
= tcgetpgrp (fd
)) == -1)
801 return SCM_MAKINUM (pgid
);
804 #endif /* HAVE_TCGETPGRP */
806 #ifdef HAVE_TCSETPGRP
807 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
808 (SCM port
, SCM pgid
),
809 "Set the foreground process group ID for the terminal used by the file\n"
810 "descriptor underlying @var{port} to the integer @var{pgid}.\n"
811 "The calling process\n"
812 "must be a member of the same session as @var{pgid} and must have the same\n"
813 "controlling terminal. The return value is unspecified.")
814 #define FUNC_NAME s_scm_tcsetpgrp
818 port
= SCM_COERCE_OUTPORT (port
);
820 SCM_VALIDATE_OPFPORT (1,port
);
821 SCM_VALIDATE_INUM (2,pgid
);
822 fd
= SCM_FPORT_FDES (port
);
823 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
825 return SCM_UNSPECIFIED
;
828 #endif /* HAVE_TCSETPGRP */
830 /* Create a new C argv array from a scheme list of strings. */
831 /* Dirk:FIXME:: A quite similar function is implemented in dynl.c */
832 /* Dirk:FIXME:: In case of assertion errors, we get memory leaks */
835 scm_convert_exec_args (SCM args
, int argn
, const char *subr
)
841 argc
= scm_ilength (args
);
842 SCM_ASSERT (argc
>= 0, args
, argn
, subr
);
843 argv
= (char **) scm_malloc ((argc
+ 1) * sizeof (char *));
844 for (i
= 0; !SCM_NULLP (args
); args
= SCM_CDR (args
), ++i
)
846 SCM arg
= SCM_CAR (args
);
851 SCM_ASSERT (SCM_STRINGP (arg
), args
, argn
, subr
);
852 len
= SCM_STRING_LENGTH (arg
);
853 src
= SCM_STRING_CHARS (arg
);
854 dst
= (char *) scm_malloc (len
+ 1);
855 memcpy (dst
, src
, len
);
863 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
864 (SCM filename
, SCM args
),
865 "Executes the file named by @var{path} as a new process image.\n"
866 "The remaining arguments are supplied to the process; from a C program\n"
867 "they are accessable as the @code{argv} argument to @code{main}.\n"
868 "Conventionally the first @var{arg} is the same as @var{path}.\n"
869 "All arguments must be strings.\n\n"
870 "If @var{arg} is missing, @var{path} is executed with a null\n"
871 "argument list, which may have system-dependent side-effects.\n\n"
872 "This procedure is currently implemented using the @code{execv} system\n"
873 "call, but we call it @code{execl} because of its Scheme calling interface.")
874 #define FUNC_NAME s_scm_execl
877 SCM_VALIDATE_STRING (1, filename
);
878 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
879 execv (SCM_STRING_CHARS (filename
), execargv
);
886 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
887 (SCM filename
, SCM args
),
888 "Similar to @code{execl}, however if\n"
889 "@var{filename} does not contain a slash\n"
890 "then the file to execute will be located by searching the\n"
891 "directories listed in the @code{PATH} environment variable.\n\n"
892 "This procedure is currently implemented using the @code{execvp} system\n"
893 "call, but we call it @code{execlp} because of its Scheme calling interface.")
894 #define FUNC_NAME s_scm_execlp
897 SCM_VALIDATE_STRING (1, filename
);
898 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
899 execvp (SCM_STRING_CHARS (filename
), execargv
);
907 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
913 num_strings
= scm_ilength (envlist
);
914 SCM_ASSERT (num_strings
>= 0, envlist
, arg
, proc
);
915 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
917 scm_memory_error (proc
);
918 for (i
= 0; !SCM_NULL_OR_NIL_P (envlist
); ++i
, envlist
= SCM_CDR (envlist
))
920 SCM str
= SCM_CAR (envlist
);
924 SCM_ASSERT (SCM_STRINGP (str
), envlist
, arg
, proc
);
925 len
= SCM_STRING_LENGTH (str
);
926 src
= SCM_STRING_CHARS (str
);
927 result
[i
] = malloc (len
+ 1);
928 if (result
[i
] == NULL
)
929 scm_memory_error (proc
);
930 memcpy (result
[i
], src
, len
);
937 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
938 (SCM filename
, SCM env
, SCM args
),
939 "Similar to @code{execl}, but the environment of the new process is\n"
940 "specified by @var{env}, which must be a list of strings as returned by the\n"
941 "@code{environ} procedure.\n\n"
942 "This procedure is currently implemented using the @code{execve} system\n"
943 "call, but we call it @code{execle} because of its Scheme calling interface.")
944 #define FUNC_NAME s_scm_execle
949 SCM_VALIDATE_STRING (1, filename
);
951 execargv
= scm_convert_exec_args (args
, SCM_ARG1
, FUNC_NAME
);
952 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
953 execve (SCM_STRING_CHARS (filename
), execargv
, exec_env
);
961 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
963 "Creates a new \"child\" process by duplicating the current \"parent\" process.\n"
964 "In the child the return value is 0. In the parent the return value is\n"
965 "the integer process ID of the child.\n\n"
966 "This procedure has been renamed from @code{fork} to avoid a naming conflict\n"
967 "with the scsh fork.")
968 #define FUNC_NAME s_scm_fork
974 return SCM_MAKINUM (0L+pid
);
977 #endif /* HAVE_FORK */
980 # include "win32-uname.h"
983 #if defined (HAVE_UNAME) || defined (__MINGW32__)
984 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
986 "Return an object with some information about the computer\n"
987 "system the program is running on.")
988 #define FUNC_NAME s_scm_uname
991 SCM ans
= scm_c_make_vector (5, SCM_UNSPECIFIED
);
992 SCM
*ve
= SCM_VELTS (ans
);
993 if (uname (&buf
) < 0)
995 ve
[0] = scm_makfrom0str (buf
.sysname
);
996 ve
[1] = scm_makfrom0str (buf
.nodename
);
997 ve
[2] = scm_makfrom0str (buf
.release
);
998 ve
[3] = scm_makfrom0str (buf
.version
);
999 ve
[4] = scm_makfrom0str (buf
.machine
);
1002 ve[5] = scm_makfrom0str (buf.domainname);
1007 #endif /* HAVE_UNAME */
1009 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
1011 "If @var{env} is omitted, return the current environment (in the\n"
1012 "Unix sense) as a list of strings. Otherwise set the current\n"
1013 "environment, which is also the default environment for child\n"
1014 "processes, to the supplied list of strings. Each member of\n"
1015 "@var{env} should be of the form @code{NAME=VALUE} and values of\n"
1016 "@code{NAME} should not be duplicated. If @var{env} is supplied\n"
1017 "then the return value is unspecified.")
1018 #define FUNC_NAME s_scm_environ
1020 if (SCM_UNBNDP (env
))
1021 return scm_makfromstrs (-1, environ
);
1026 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
1027 /* Free the old environment, except when called for the first
1032 static int first
= 1;
1035 for (ep
= environ
; *ep
!= NULL
; ep
++)
1037 free ((char *) environ
);
1041 environ
= new_environ
;
1042 return SCM_UNSPECIFIED
;
1049 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1051 "Return a name in the file system that does not match any\n"
1052 "existing file. However there is no guarantee that another\n"
1053 "process will not create the file after @code{tmpnam} is called.\n"
1054 "Care should be taken if opening the file, e.g., use the\n"
1055 "@code{O_EXCL} open flag or use @code{mkstemp!} instead.")
1056 #define FUNC_NAME s_scm_tmpnam
1058 char name
[L_tmpnam
];
1061 SCM_SYSCALL (rv
= tmpnam (name
));
1063 /* not SCM_SYSERROR since errno probably not set. */
1064 SCM_MISC_ERROR ("tmpnam failed", SCM_EOL
);
1065 return scm_makfrom0str (name
);
1071 #ifndef HAVE_MKSTEMP
1072 extern int mkstemp (char *);
1075 SCM_DEFINE (scm_mkstemp
, "mkstemp!", 1, 0, 0,
1077 "Create a new unique file in the file system and returns a new\n"
1078 "buffered port open for reading and writing to the file.\n"
1079 "@var{tmpl} is a string specifying where the file should be\n"
1080 "created: it must end with @code{XXXXXX} and will be changed in\n"
1081 "place to return the name of the temporary file.")
1082 #define FUNC_NAME s_scm_mkstemp
1087 SCM_VALIDATE_STRING_COPY (1, tmpl
, c_tmpl
);
1088 SCM_SYSCALL (rv
= mkstemp (c_tmpl
));
1091 return scm_fdes_to_port (rv
, "w+", tmpl
);
1095 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1096 (SCM pathname
, SCM actime
, SCM modtime
),
1097 "@code{utime} sets the access and modification times for the\n"
1098 "file named by @var{path}. If @var{actime} or @var{modtime} is\n"
1099 "not supplied, then the current time is used. @var{actime} and\n"
1100 "@var{modtime} must be integer time values as returned by the\n"
1101 "@code{current-time} procedure.\n"
1103 "(utime \"foo\" (- (current-time) 3600))\n"
1105 "will set the access time to one hour in the past and the\n"
1106 "modification time to the current time.")
1107 #define FUNC_NAME s_scm_utime
1110 struct utimbuf utm_tmp
;
1112 SCM_VALIDATE_STRING (1, pathname
);
1113 if (SCM_UNBNDP (actime
))
1114 SCM_SYSCALL (time (&utm_tmp
.actime
));
1116 utm_tmp
.actime
= SCM_NUM2ULONG (2, actime
);
1118 if (SCM_UNBNDP (modtime
))
1119 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1121 utm_tmp
.modtime
= SCM_NUM2ULONG (3, modtime
);
1123 SCM_SYSCALL (rv
= utime (SCM_STRING_CHARS (pathname
), &utm_tmp
));
1126 return SCM_UNSPECIFIED
;
1130 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1131 (SCM path
, SCM how
),
1132 "Return @code{#t} if @var{path} corresponds to an existing file\n"
1133 "and the current process has the type of access specified by\n"
1134 "@var{how}, otherwise @code{#f}. @var{how} should be specified\n"
1135 "using the values of the variables listed below. Multiple\n"
1136 "values can be combined using a bitwise or, in which case\n"
1137 "@code{#t} will only be returned if all accesses are granted.\n"
1139 "Permissions are checked using the real id of the current\n"
1140 "process, not the effective id, although it's the effective id\n"
1141 "which determines whether the access would actually be granted.\n"
1144 "test for read permission.\n"
1147 "test for write permission.\n"
1150 "test for execute permission.\n"
1153 "test for existence of the file.\n"
1155 #define FUNC_NAME s_scm_access
1159 SCM_VALIDATE_STRING (1, path
);
1160 SCM_VALIDATE_INUM (2, how
);
1161 rv
= access (SCM_STRING_CHARS (path
), SCM_INUM (how
));
1162 return SCM_NEGATE_BOOL(rv
);
1166 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1168 "Return an integer representing the current process ID.")
1169 #define FUNC_NAME s_scm_getpid
1171 return SCM_MAKINUM ((unsigned long) getpid ());
1175 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1177 "Modifies the environment of the current process, which is\n"
1178 "also the default environment inherited by child processes.\n\n"
1179 "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n"
1180 "directly into the environment, replacing any existing environment string\n"
1182 "name matching @code{NAME}. If @var{string} does not contain an equal\n"
1183 "sign, then any existing string with name matching @var{string} will\n"
1185 "The return value is unspecified.")
1186 #define FUNC_NAME s_scm_putenv
1191 SCM_VALIDATE_STRING (1, str
);
1192 /* must make a new copy to be left in the environment, safe from gc. */
1193 ptr
= malloc (SCM_STRING_LENGTH (str
) + 1);
1196 strncpy (ptr
, SCM_STRING_CHARS (str
), SCM_STRING_LENGTH (str
));
1197 ptr
[SCM_STRING_LENGTH (str
)] = 0;
1201 return SCM_UNSPECIFIED
;
1205 #ifdef HAVE_SETLOCALE
1206 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1207 (SCM category
, SCM locale
),
1208 "If @var{locale} is omitted, return the current value of the\n"
1209 "specified locale category as a system-dependent string.\n"
1210 "@var{category} should be specified using the values\n"
1211 "@code{LC_COLLATE}, @code{LC_ALL} etc.\n"
1213 "Otherwise the specified locale category is set to the string\n"
1214 "@var{locale} and the new value is returned as a\n"
1215 "system-dependent string. If @var{locale} is an empty string,\n"
1216 "the locale will be set using envirionment variables.")
1217 #define FUNC_NAME s_scm_setlocale
1222 SCM_VALIDATE_INUM (1,category
);
1223 if (SCM_UNBNDP (locale
))
1229 SCM_VALIDATE_STRING (2, locale
);
1230 clocale
= SCM_STRING_CHARS (locale
);
1233 rv
= setlocale (SCM_INUM (category
), clocale
);
1236 return scm_makfrom0str (rv
);
1239 #endif /* HAVE_SETLOCALE */
1242 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1243 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1244 "Creates a new special file, such as a file corresponding to a device.\n"
1245 "@var{path} specifies the name of the file. @var{type} should\n"
1246 "be one of the following symbols:\n"
1247 "regular, directory, symlink, block-special, char-special,\n"
1248 "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n"
1249 "@var{dev} (an integer) specifies which device the special file refers\n"
1250 "to. Its exact interpretation depends on the kind of special file\n"
1251 "being created.\n\n"
1254 "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))\n"
1256 "The return value is unspecified.")
1257 #define FUNC_NAME s_scm_mknod
1263 SCM_VALIDATE_STRING (1, path
);
1264 SCM_VALIDATE_SYMBOL (2,type
);
1265 SCM_VALIDATE_INUM (3,perms
);
1266 SCM_VALIDATE_INUM (4,dev
);
1268 p
= SCM_SYMBOL_CHARS (type
);
1269 if (strcmp (p
, "regular") == 0)
1271 else if (strcmp (p
, "directory") == 0)
1273 else if (strcmp (p
, "symlink") == 0)
1275 else if (strcmp (p
, "block-special") == 0)
1277 else if (strcmp (p
, "char-special") == 0)
1279 else if (strcmp (p
, "fifo") == 0)
1282 else if (strcmp (p
, "socket") == 0)
1286 SCM_OUT_OF_RANGE (2,type
);
1288 SCM_SYSCALL (val
= mknod (SCM_STRING_CHARS (path
), ctype
| SCM_INUM (perms
),
1292 return SCM_UNSPECIFIED
;
1295 #endif /* HAVE_MKNOD */
1298 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1300 "Increment the priority of the current process by @var{incr}. A higher\n"
1301 "priority value means that the process runs less often.\n"
1302 "The return value is unspecified.")
1303 #define FUNC_NAME s_scm_nice
1305 SCM_VALIDATE_INUM (1,incr
);
1306 if (nice(SCM_INUM(incr
)) != 0)
1308 return SCM_UNSPECIFIED
;
1311 #endif /* HAVE_NICE */
1314 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1316 "Flush the operating system disk buffers.\n"
1317 "The return value is unspecified.")
1318 #define FUNC_NAME s_scm_sync
1321 return SCM_UNSPECIFIED
;
1324 #endif /* HAVE_SYNC */
1326 #if HAVE_LIBCRYPT && HAVE_CRYPT_H
1327 SCM_DEFINE (scm_crypt
, "crypt", 2, 0, 0,
1328 (SCM key
, SCM salt
),
1329 "Encrypt @var{key} using @var{salt} as the salt value to the\n"
1330 "crypt(3) library call.")
1331 #define FUNC_NAME s_scm_crypt
1335 SCM_VALIDATE_STRING (1, key
);
1336 SCM_VALIDATE_STRING (2, salt
);
1338 p
= crypt (SCM_STRING_CHARS (key
), SCM_STRING_CHARS (salt
));
1339 return scm_makfrom0str (p
);
1342 #endif /* HAVE_LIBCRYPT && HAVE_CRYPT_H */
1345 SCM_DEFINE (scm_chroot
, "chroot", 1, 0, 0,
1347 "Change the root directory to that specified in @var{path}.\n"
1348 "This directory will be used for path names beginning with\n"
1349 "@file{/}. The root directory is inherited by all children\n"
1350 "of the current process. Only the superuser may change the\n"
1352 #define FUNC_NAME s_scm_chroot
1354 SCM_VALIDATE_STRING (1, path
);
1356 if (chroot (SCM_STRING_CHARS (path
)) == -1)
1358 return SCM_UNSPECIFIED
;
1361 #endif /* HAVE_CHROOT */
1365 /* Wrapper function to supplying `getlogin()' under Windows. */
1366 static char * getlogin (void)
1368 static char user
[256];
1369 static unsigned long len
= 256;
1371 if (!GetUserName (user
, &len
))
1375 #endif /* __MINGW32__ */
1378 #if defined (HAVE_GETLOGIN) || defined (__MINGW32__)
1379 SCM_DEFINE (scm_getlogin
, "getlogin", 0, 0, 0,
1381 "Return a string containing the name of the user logged in on\n"
1382 "the controlling terminal of the process, or @code{#f} if this\n"
1383 "information cannot be obtained.")
1384 #define FUNC_NAME s_scm_getlogin
1391 return scm_makfrom0str (p
);
1394 #endif /* HAVE_GETLOGIN */
1397 SCM_DEFINE (scm_cuserid
, "cuserid", 0, 0, 0,
1399 "Return a string containing a user name associated with the\n"
1400 "effective user id of the process. Return @code{#f} if this\n"
1401 "information cannot be obtained.")
1402 #define FUNC_NAME s_scm_cuserid
1409 return scm_makfrom0str (p
);
1412 #endif /* HAVE_CUSERID */
1414 #if HAVE_GETPRIORITY
1415 SCM_DEFINE (scm_getpriority
, "getpriority", 2, 0, 0,
1416 (SCM which
, SCM who
),
1417 "Return the scheduling priority of the process, process group\n"
1418 "or user, as indicated by @var{which} and @var{who}. @var{which}\n"
1419 "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n"
1420 "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n"
1421 "@var{which} (a process identifier for @code{PRIO_PROCESS},\n"
1422 "process group identifier for @code{PRIO_PGRP}, and a user\n"
1423 "identifier for @code{PRIO_USER}. A zero value of @var{who}\n"
1424 "denotes the current process, process group, or user. Return\n"
1425 "the highest priority (lowest numerical value) of any of the\n"
1426 "specified processes.")
1427 #define FUNC_NAME s_scm_getpriority
1429 int cwhich
, cwho
, ret
;
1431 SCM_VALIDATE_INUM_COPY (1, which
, cwhich
);
1432 SCM_VALIDATE_INUM_COPY (2, who
, cwho
);
1434 /* We have to clear errno and examine it later, because -1 is a
1435 legal return value for getpriority(). */
1437 ret
= getpriority (cwhich
, cwho
);
1440 return SCM_MAKINUM (ret
);
1443 #endif /* HAVE_GETPRIORITY */
1445 #if HAVE_SETPRIORITY
1446 SCM_DEFINE (scm_setpriority
, "setpriority", 3, 0, 0,
1447 (SCM which
, SCM who
, SCM prio
),
1448 "Set the scheduling priority of the process, process group\n"
1449 "or user, as indicated by @var{which} and @var{who}. @var{which}\n"
1450 "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n"
1451 "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n"
1452 "@var{which} (a process identifier for @code{PRIO_PROCESS},\n"
1453 "process group identifier for @code{PRIO_PGRP}, and a user\n"
1454 "identifier for @code{PRIO_USER}. A zero value of @var{who}\n"
1455 "denotes the current process, process group, or user.\n"
1456 "@var{prio} is a value in the range -20 and 20, the default\n"
1457 "priority is 0; lower priorities cause more favorable\n"
1458 "scheduling. Sets the priority of all of the specified\n"
1459 "processes. Only the super-user may lower priorities.\n"
1460 "The return value is not specified.")
1461 #define FUNC_NAME s_scm_setpriority
1463 int cwhich
, cwho
, cprio
;
1465 SCM_VALIDATE_INUM_COPY (1, which
, cwhich
);
1466 SCM_VALIDATE_INUM_COPY (2, who
, cwho
);
1467 SCM_VALIDATE_INUM_COPY (3, prio
, cprio
);
1469 if (setpriority (cwhich
, cwho
, cprio
) == -1)
1471 return SCM_UNSPECIFIED
;
1474 #endif /* HAVE_SETPRIORITY */
1477 SCM_DEFINE (scm_getpass
, "getpass", 1, 0, 0,
1479 "Display @var{prompt} to the standard error output and read\n"
1480 "a password from @file{/dev/tty}. If this file is not\n"
1481 "accessible, it reads from standard input. The password may be\n"
1482 "up to 127 characters in length. Additional characters and the\n"
1483 "terminating newline character are discarded. While reading\n"
1484 "the password, echoing and the generation of signals by special\n"
1485 "characters is disabled.")
1486 #define FUNC_NAME s_scm_getpass
1491 SCM_VALIDATE_STRING (1, prompt
);
1493 p
= getpass(SCM_STRING_CHARS (prompt
));
1494 passwd
= scm_makfrom0str (p
);
1496 /* Clear out the password in the static buffer. */
1497 memset (p
, 0, strlen (p
));
1502 #endif /* HAVE_GETPASS */
1504 /* Wrapper function for flock() support under M$-Windows. */
1507 # include <sys/locking.h>
1510 /* Current MinGW package fails to define this. *sigh* */
1511 # define _LK_UNLCK 0
1518 static int flock (int fd
, int operation
)
1523 /* Disable invalid arguments. */
1524 if (((operation
& (LOCK_EX
| LOCK_SH
)) == (LOCK_EX
| LOCK_SH
)) ||
1525 ((operation
& (LOCK_EX
| LOCK_UN
)) == (LOCK_EX
| LOCK_UN
)) ||
1526 ((operation
& (LOCK_SH
| LOCK_UN
)) == (LOCK_SH
| LOCK_UN
)))
1532 /* Determine mode of operation and discard unsupported ones. */
1533 if (operation
== (LOCK_NB
| LOCK_EX
))
1534 operation
= _LK_NBLCK
;
1535 else if (operation
& LOCK_UN
)
1536 operation
= _LK_UNLCK
;
1537 else if (operation
== LOCK_EX
)
1538 operation
= _LK_LOCK
;
1545 /* Save current file pointer and seek to beginning. */
1546 if ((pos
= lseek (fd
, 0, SEEK_CUR
)) == -1 || (len
= filelength (fd
)) == -1)
1548 lseek (fd
, 0L, SEEK_SET
);
1550 /* Deadlock if necessary. */
1553 ret
= _locking (fd
, operation
, len
);
1555 while (ret
== -1 && errno
== EDEADLOCK
);
1557 /* Produce meaningful error message. */
1558 if (errno
== EACCES
&& operation
== _LK_NBLCK
)
1563 /* Return to saved file position pointer. */
1564 lseek (fd
, pos
, SEEK_SET
);
1568 #endif /* __MINGW32__ */
1570 #if HAVE_FLOCK || defined (__MINGW32__)
1571 SCM_DEFINE (scm_flock
, "flock", 2, 0, 0,
1572 (SCM file
, SCM operation
),
1573 "Apply or remove an advisory lock on an open file.\n"
1574 "@var{operation} specifies the action to be done:\n"
1577 "Shared lock. More than one process may hold a shared lock\n"
1578 "for a given file at a given time.\n"
1580 "Exclusive lock. Only one process may hold an exclusive lock\n"
1581 "for a given file at a given time.\n"
1583 "Unlock the file.\n"
1585 "Don't block when locking. May be specified by bitwise OR'ing\n"
1586 "it to one of the other operations.\n"
1588 "The return value is not specified. @var{file} may be an open\n"
1589 "file descriptor or an open file descriptior port.")
1590 #define FUNC_NAME s_scm_flock
1592 int coperation
, fdes
;
1594 if (SCM_INUMP (file
))
1595 fdes
= SCM_INUM (file
);
1598 SCM_VALIDATE_OPFPORT (2, file
);
1600 fdes
= SCM_FPORT_FDES (file
);
1602 SCM_VALIDATE_INUM_COPY (2, operation
, coperation
);
1603 if (flock (fdes
, coperation
) == -1)
1605 return SCM_UNSPECIFIED
;
1608 #endif /* HAVE_FLOCK */
1610 #if HAVE_SETHOSTNAME
1611 SCM_DEFINE (scm_sethostname
, "sethostname", 1, 0, 0,
1613 "Set the host name of the current processor to @var{name}. May\n"
1614 "only be used by the superuser. The return value is not\n"
1616 #define FUNC_NAME s_scm_sethostname
1618 SCM_VALIDATE_STRING (1, name
);
1620 if (sethostname (SCM_STRING_CHARS (name
), SCM_STRING_LENGTH (name
)) == -1)
1622 return SCM_UNSPECIFIED
;
1625 #endif /* HAVE_SETHOSTNAME */
1627 #if HAVE_GETHOSTNAME
1628 SCM_DEFINE (scm_gethostname
, "gethostname", 0, 0, 0,
1630 "Return the host name of the current processor.")
1631 #define FUNC_NAME s_scm_gethostname
1633 /* 256 is for Solaris, under Linux ENAMETOOLONG is returned if not
1636 char *p
= scm_malloc (len
);
1639 res
= gethostname (p
, len
);
1640 while (res
== -1 && errno
== ENAMETOOLONG
)
1642 p
= scm_realloc (p
, len
* 2);
1644 res
= gethostname (p
, len
);
1651 name
= scm_makfrom0str (p
);
1656 #endif /* HAVE_GETHOSTNAME */
1661 scm_add_feature ("posix");
1663 scm_add_feature ("EIDs");
1666 scm_c_define ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1669 scm_c_define ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1672 scm_c_define ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1675 scm_c_define ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1678 /* access() symbols. */
1679 scm_c_define ("R_OK", SCM_MAKINUM (R_OK
));
1680 scm_c_define ("W_OK", SCM_MAKINUM (W_OK
));
1681 scm_c_define ("X_OK", SCM_MAKINUM (X_OK
));
1682 scm_c_define ("F_OK", SCM_MAKINUM (F_OK
));
1685 scm_c_define ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1688 scm_c_define ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1691 scm_c_define ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1694 scm_c_define ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1697 scm_c_define ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1700 scm_c_define ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1703 scm_c_define ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1706 scm_c_define ("PIPE_BUF", scm_long2num (PIPE_BUF
));
1710 scm_c_define ("PRIO_PROCESS", SCM_MAKINUM (PRIO_PROCESS
));
1713 scm_c_define ("PRIO_PGRP", SCM_MAKINUM (PRIO_PGRP
));
1716 scm_c_define ("PRIO_USER", SCM_MAKINUM (PRIO_USER
));
1720 scm_c_define ("LOCK_SH", SCM_MAKINUM (LOCK_SH
));
1723 scm_c_define ("LOCK_EX", SCM_MAKINUM (LOCK_EX
));
1726 scm_c_define ("LOCK_UN", SCM_MAKINUM (LOCK_UN
));
1729 scm_c_define ("LOCK_NB", SCM_MAKINUM (LOCK_NB
));
1732 #include "libguile/cpp_sig_symbols.c"
1733 #ifndef SCM_MAGIC_SNARFER
1734 #include "libguile/posix.x"