1 /* Copyright (C) 1995, 96, 97, 98, 99, 2000 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. */
42 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
43 gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
48 #include "libguile/_scm.h"
49 #include "libguile/fports.h"
50 #include "libguile/scmsigs.h"
51 #include "libguile/feature.h"
52 #include "libguile/strings.h"
53 #include "libguile/vectors.h"
55 #include "libguile/validate.h"
56 #include "libguile/posix.h"
62 #ifdef TIME_WITH_SYS_TIME
63 # include <sys/time.h>
67 # include <sys/time.h>
77 extern char *ttyname();
81 #ifdef LIBC_H_WITH_UNISTD_H
85 #include <sys/types.h>
92 # include <sys/wait.h>
95 # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
98 # define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
103 extern FILE *popen ();
104 extern char ** environ
;
107 #include <sys/utsname.h>
111 # define NAMLEN(dirent) strlen((dirent)->d_name)
113 # define dirent direct
114 # define NAMLEN(dirent) (dirent)->d_namlen
116 # include <sys/ndir.h>
119 # include <sys/dir.h>
126 #ifdef HAVE_SETLOCALE
130 /* Some Unix systems don't define these. CPP hair is dangerous, but
131 this seems safe enough... */
148 /* On NextStep, <utime.h> doesn't define struct utime, unless we
149 #define _POSIX_SOURCE before #including it. I think this is less
150 of a kludge than defining struct utimbuf ourselves. */
151 #ifdef UTIMBUF_NEEDS_POSIX
152 #define _POSIX_SOURCE
155 #ifdef HAVE_SYS_UTIME_H
156 #include <sys/utime.h>
163 /* Please don't add any more #includes or #defines here. The hack
164 above means that _POSIX_SOURCE may be #defined, which will
165 encourage header files to do strange things. */
168 SCM_SYMBOL (sym_read_pipe
, "read pipe");
169 SCM_SYMBOL (sym_write_pipe
, "write pipe");
171 SCM_DEFINE (scm_pipe
, "pipe", 0, 0, 0,
173 "Returns a newly created pipe: a pair of ports which are linked\n"
174 "together on the local machine. The CAR is the input port and\n"
175 "the CDR is the output port. Data written (and flushed) to the\n"
176 "output port can be read from the input port.\n"
177 "Pipes are commonly used for communication with a newly\n"
178 "forked child process. The need to flush the output port\n"
179 "can be avoided by making it unbuffered using @code{setvbuf}.\n\n"
180 "Writes occur atomically provided the size of the data in\n"
181 "bytes is not greater than the value of @code{PIPE_BUF}\n"
182 "Note that the output port is likely to block if too much data\n"
183 "(typically equal to @code{PIPE_BUF}) has been written but not\n"
184 "yet read from the input port\n"
186 #define FUNC_NAME s_scm_pipe
195 p_rd
= scm_fdes_to_port (fd
[0], "r", sym_read_pipe
);
196 p_wt
= scm_fdes_to_port (fd
[1], "w", sym_write_pipe
);
197 return scm_cons (p_rd
, p_wt
);
202 #ifdef HAVE_GETGROUPS
203 SCM_DEFINE (scm_getgroups
, "getgroups", 0, 0, 0,
205 "Returns a vector of integers representing the current supplimentary group IDs.")
206 #define FUNC_NAME s_scm_getgroups
213 ngroups
= getgroups (0, NULL
);
217 size
= ngroups
* sizeof (GETGROUPS_T
);
218 groups
= scm_must_malloc (size
, FUNC_NAME
);
219 getgroups (ngroups
, groups
);
221 ans
= scm_make_vector (SCM_MAKINUM (ngroups
), SCM_UNDEFINED
);
222 while (--ngroups
>= 0)
223 SCM_VELTS (ans
) [ngroups
] = SCM_MAKINUM (groups
[ngroups
]);
225 scm_must_free (groups
);
226 scm_done_free (size
);
234 SCM_DEFINE (scm_getpwuid
, "getpw", 0, 1, 0,
236 "Look up an entry in the user database. @var{obj} can be an integer,\n"
237 "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n"
238 "or getpwent respectively.")
239 #define FUNC_NAME s_scm_getpwuid
242 struct passwd
*entry
;
245 result
= scm_make_vector (SCM_MAKINUM (7), SCM_UNSPECIFIED
);
246 ve
= SCM_VELTS (result
);
247 if (SCM_UNBNDP (user
) || SCM_FALSEP (user
))
249 SCM_SYSCALL (entry
= getpwent ());
255 else if (SCM_INUMP (user
))
257 entry
= getpwuid (SCM_INUM (user
));
261 SCM_VALIDATE_STRING (1, user
);
262 SCM_STRING_COERCE_0TERMINATION_X (user
);
263 entry
= getpwnam (SCM_STRING_CHARS (user
));
266 SCM_MISC_ERROR ("entry not found", SCM_EOL
);
268 ve
[0] = scm_makfrom0str (entry
->pw_name
);
269 ve
[1] = scm_makfrom0str (entry
->pw_passwd
);
270 ve
[2] = scm_ulong2num ((unsigned long) entry
->pw_uid
);
271 ve
[3] = scm_ulong2num ((unsigned long) entry
->pw_gid
);
272 ve
[4] = scm_makfrom0str (entry
->pw_gecos
);
274 ve
[5] = scm_makfrom0str ("");
276 ve
[5] = scm_makfrom0str (entry
->pw_dir
);
277 if (!entry
->pw_shell
)
278 ve
[6] = scm_makfrom0str ("");
280 ve
[6] = scm_makfrom0str (entry
->pw_shell
);
287 SCM_DEFINE (scm_setpwent
, "setpw", 0, 1, 0,
289 "If called with a true argument, initialize or reset the password data\n"
290 "stream. Otherwise, close the stream. The @code{setpwent} and\n"
291 "@code{endpwent} procedures are implemented on top of this.")
292 #define FUNC_NAME s_scm_setpwent
294 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
298 return SCM_UNSPECIFIED
;
305 /* Combines getgrgid and getgrnam. */
306 SCM_DEFINE (scm_getgrgid
, "getgr", 0, 1, 0,
308 "Look up an entry in the group database. @var{obj} can be an integer,\n"
309 "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n"
310 "or getgrent respectively.")
311 #define FUNC_NAME s_scm_getgrgid
316 result
= scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED
);
317 ve
= SCM_VELTS (result
);
318 if (SCM_UNBNDP (name
) || SCM_FALSEP (name
))
320 SCM_SYSCALL (entry
= getgrent ());
326 else if (SCM_INUMP (name
))
327 SCM_SYSCALL (entry
= getgrgid (SCM_INUM (name
)));
330 SCM_VALIDATE_STRING (1, name
);
331 SCM_STRING_COERCE_0TERMINATION_X (name
);
332 SCM_SYSCALL (entry
= getgrnam (SCM_STRING_CHARS (name
)));
337 ve
[0] = scm_makfrom0str (entry
->gr_name
);
338 ve
[1] = scm_makfrom0str (entry
->gr_passwd
);
339 ve
[2] = scm_ulong2num ((unsigned long) entry
->gr_gid
);
340 ve
[3] = scm_makfromstrs (-1, entry
->gr_mem
);
347 SCM_DEFINE (scm_setgrent
, "setgr", 0, 1, 0,
349 "If called with a true argument, initialize or reset the group data\n"
350 "stream. Otherwise, close the stream. The @code{setgrent} and\n"
351 "@code{endgrent} procedures are implemented on top of this.")
352 #define FUNC_NAME s_scm_setgrent
354 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
358 return SCM_UNSPECIFIED
;
364 SCM_DEFINE (scm_kill
, "kill", 2, 0, 0,
366 "Sends a signal to the specified process or group of processes.\n\n"
367 "@var{pid} specifies the processes to which the signal is sent:\n\n"
369 "@item @var{pid} greater than 0\n"
370 "The process whose identifier is @var{pid}.\n"
371 "@item @var{pid} equal to 0\n"
372 "All processes in the current process group.\n"
373 "@item @var{pid} less than -1\n"
374 "The process group whose identifier is -@var{pid}\n"
375 "@item @var{pid} equal to -1\n"
376 "If the process is privileged, all processes except for some special\n"
377 "system processes. Otherwise, all processes with the current effective\n"
380 "@var{sig} should be specified using a variable corresponding to\n"
381 "the Unix symbolic name, e.g.,\n\n"
386 "Interrupt signal.\n"
388 #define FUNC_NAME s_scm_kill
390 SCM_VALIDATE_INUM (1,pid
);
391 SCM_VALIDATE_INUM (2,sig
);
392 /* Signal values are interned in scm_init_posix(). */
393 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
395 return SCM_UNSPECIFIED
;
400 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
401 (SCM pid
, SCM options
),
402 "This procedure collects status information from a child process which\n"
403 "has terminated or (optionally) stopped. Normally it will\n"
404 "suspend the calling process until this can be done. If more than one\n"
405 "child process is eligible then one will be chosen by the operating system.\n\n"
406 "The value of @var{pid} determines the behaviour:\n\n"
408 "@item @var{pid} greater than 0\n"
409 "Request status information from the specified child process.\n"
410 "@item @var{pid} equal to -1 or WAIT_ANY\n"
411 "Request status information for any child process.\n"
412 "@item @var{pid} equal to 0 or WAIT_MYPGRP\n"
413 "Request status information for any child process in the current process\n"
415 "@item @var{pid} less than -1\n"
416 "Request status information for any child process whose process group ID\n"
419 "The @var{options} argument, if supplied, should be the bitwise OR of the\n"
420 "values of zero or more of the following variables:\n\n"
422 "Return immediately even if there are no child processes to be collected.\n"
424 "@defvar WUNTRACED\n"
425 "Report status information for stopped processes as well as terminated\n"
428 "The return value is a pair containing:\n\n"
431 "The process ID of the child process, or 0 if @code{WNOHANG} was\n"
432 "specified and no process was collected.\n"
434 "The integer status value.\n"
436 #define FUNC_NAME s_scm_waitpid
441 SCM_VALIDATE_INUM (1,pid
);
442 if (SCM_UNBNDP (options
))
446 SCM_VALIDATE_INUM (2,options
);
447 /* Flags are interned in scm_init_posix. */
448 ioptions
= SCM_INUM (options
);
450 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
453 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
456 #endif /* HAVE_WAITPID */
458 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
460 "Returns the exit status value, as would be\n"
461 "set if a process ended normally through a\n"
462 "call to @code{exit} or @code{_exit}, if any, otherwise @code{#f}.")
463 #define FUNC_NAME s_scm_status_exit_val
467 SCM_VALIDATE_INUM (1,status
);
469 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
470 go figure. SCM_INUM does not yield an lvalue. */
471 lstatus
= SCM_INUM (status
);
472 if (WIFEXITED (lstatus
))
473 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
479 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
481 "Returns the signal number which terminated the\n"
482 "process, if any, otherwise @code{#f}.")
483 #define FUNC_NAME s_scm_status_term_sig
487 SCM_VALIDATE_INUM (1,status
);
489 lstatus
= SCM_INUM (status
);
490 if (WIFSIGNALED (lstatus
))
491 return SCM_MAKINUM (WTERMSIG (lstatus
));
497 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
499 "Returns the signal number which stopped the\n"
500 "process, if any, otherwise @code{#f}.")
501 #define FUNC_NAME s_scm_status_stop_sig
505 SCM_VALIDATE_INUM (1,status
);
507 lstatus
= SCM_INUM (status
);
508 if (WIFSTOPPED (lstatus
))
509 return SCM_MAKINUM (WSTOPSIG (lstatus
));
515 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
517 "Returns an integer representing the process ID of the parent process.")
518 #define FUNC_NAME s_scm_getppid
520 return SCM_MAKINUM (0L + getppid ());
526 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
528 "Returns an integer representing the current real user ID.")
529 #define FUNC_NAME s_scm_getuid
531 return SCM_MAKINUM (0L + getuid ());
537 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
539 "Returns an integer representing the current real group ID.")
540 #define FUNC_NAME s_scm_getgid
542 return SCM_MAKINUM (0L + getgid ());
548 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
550 "Returns an integer representing the current effective user ID.\n"
551 "If the system does not support effective IDs, then the real ID\n"
552 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
553 "supports effective IDs.")
554 #define FUNC_NAME s_scm_geteuid
557 return SCM_MAKINUM (0L + geteuid ());
559 return SCM_MAKINUM (0L + getuid ());
566 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
568 "Returns an integer representing the current effective group ID.\n"
569 "If the system does not support effective IDs, then the real ID\n"
570 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
571 "supports effective IDs.")
572 #define FUNC_NAME s_scm_getegid
575 return SCM_MAKINUM (0L + getegid ());
577 return SCM_MAKINUM (0L + getgid ());
583 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
585 "Sets both the real and effective user IDs to the integer @var{id}, provided\n"
586 "the process has appropriate privileges.\n"
587 "The return value is unspecified.")
588 #define FUNC_NAME s_scm_setuid
590 SCM_VALIDATE_INUM (1,id
);
591 if (setuid (SCM_INUM (id
)) != 0)
593 return SCM_UNSPECIFIED
;
597 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
599 "Sets both the real and effective group IDs to the integer @var{id}, provided\n"
600 "the process has appropriate privileges.\n"
601 "The return value is unspecified.")
602 #define FUNC_NAME s_scm_setgid
604 SCM_VALIDATE_INUM (1,id
);
605 if (setgid (SCM_INUM (id
)) != 0)
607 return SCM_UNSPECIFIED
;
611 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
613 "Sets the effective user ID to the integer @var{id}, provided the process\n"
614 "has appropriate privileges. If effective IDs are not supported, the\n"
615 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
616 "system supports effective IDs.\n"
617 "The return value is unspecified.")
618 #define FUNC_NAME s_scm_seteuid
622 SCM_VALIDATE_INUM (1,id
);
624 rv
= seteuid (SCM_INUM (id
));
626 rv
= setuid (SCM_INUM (id
));
630 return SCM_UNSPECIFIED
;
635 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
637 "Sets the effective group ID to the integer @var{id}, provided the process\n"
638 "has appropriate privileges. If effective IDs are not supported, the\n"
639 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
640 "system supports effective IDs.\n"
641 "The return value is unspecified.")
642 #define FUNC_NAME s_scm_setegid
646 SCM_VALIDATE_INUM (1,id
);
648 rv
= setegid (SCM_INUM (id
));
650 rv
= setgid (SCM_INUM (id
));
654 return SCM_UNSPECIFIED
;
660 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
662 "Returns an integer representing the current process group ID.\n"
663 "This is the POSIX definition, not BSD.")
664 #define FUNC_NAME s_scm_getpgrp
667 fn
= (int (*) ()) getpgrp
;
668 return SCM_MAKINUM (fn (0));
673 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
675 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n"
676 "@var{pgid} must be integers: they can be zero to indicate the ID of the\n"
678 "Fails on systems that do not support job control.\n"
679 "The return value is unspecified.")
680 #define FUNC_NAME s_scm_setpgid
682 SCM_VALIDATE_INUM (1,pid
);
683 SCM_VALIDATE_INUM (2,pgid
);
684 /* FIXME(?): may be known as setpgrp. */
685 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
687 return SCM_UNSPECIFIED
;
690 #endif /* HAVE_SETPGID */
693 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
695 "Creates a new session. The current process becomes the session leader\n"
696 "and is put in a new process group. The process will be detached\n"
697 "from its controlling terminal if it has one.\n"
698 "The return value is an integer representing the new process group ID.")
699 #define FUNC_NAME s_scm_setsid
701 pid_t sid
= setsid ();
704 return SCM_UNSPECIFIED
;
707 #endif /* HAVE_SETSID */
709 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
711 "Returns a string with the name of the serial terminal device underlying\n"
713 #define FUNC_NAME s_scm_ttyname
718 port
= SCM_COERCE_OUTPORT (port
);
719 SCM_VALIDATE_OPPORT (1,port
);
720 if (scm_tc16_fport
!= SCM_TYP16 (port
))
722 fd
= SCM_FPORT_FDES (port
);
723 SCM_SYSCALL (ans
= ttyname (fd
));
726 /* ans could be overwritten by another call to ttyname */
727 return (scm_makfrom0str (ans
));
732 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
734 "Returns a string containing the file name of the controlling terminal\n"
735 "for the current process.")
736 #define FUNC_NAME s_scm_ctermid
738 char *result
= ctermid (NULL
);
741 return scm_makfrom0str (result
);
744 #endif /* HAVE_CTERMID */
746 #ifdef HAVE_TCGETPGRP
747 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
749 "Returns the process group ID of the foreground\n"
750 "process group associated with the terminal open on the file descriptor\n"
751 "underlying @var{port}.\n\n"
752 "If there is no foreground process group, the return value is a\n"
753 "number greater than 1 that does not match the process group ID\n"
754 "of any existing process group. This can happen if all of the\n"
755 "processes in the job that was formerly the foreground job have\n"
756 "terminated, and no other job has yet been moved into the\n"
758 #define FUNC_NAME s_scm_tcgetpgrp
763 port
= SCM_COERCE_OUTPORT (port
);
765 SCM_VALIDATE_OPFPORT (1,port
);
766 fd
= SCM_FPORT_FDES (port
);
767 if ((pgid
= tcgetpgrp (fd
)) == -1)
769 return SCM_MAKINUM (pgid
);
772 #endif /* HAVE_TCGETPGRP */
774 #ifdef HAVE_TCSETPGRP
775 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
776 (SCM port
, SCM pgid
),
777 "Set the foreground process group ID for the terminal used by the file\n"
778 "descriptor underlying @var{port} to the integer @var{pgid}.\n"
779 "The calling process\n"
780 "must be a member of the same session as @var{pgid} and must have the same\n"
781 "controlling terminal. The return value is unspecified.")
782 #define FUNC_NAME s_scm_tcsetpgrp
786 port
= SCM_COERCE_OUTPORT (port
);
788 SCM_VALIDATE_OPFPORT (1,port
);
789 SCM_VALIDATE_INUM (2,pgid
);
790 fd
= SCM_FPORT_FDES (port
);
791 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
793 return SCM_UNSPECIFIED
;
796 #endif /* HAVE_TCSETPGRP */
798 /* Create a new C argv array from a scheme list of strings. */
799 /* Dirk:FIXME:: A quite similar function is implemented in dynl.c */
800 /* Dirk:FIXME:: In case of assertion errors, we get memory leaks */
803 scm_convert_exec_args (SCM args
, int argn
, const char *subr
)
809 argc
= scm_ilength (args
);
810 SCM_ASSERT (argc
>= 0, args
, argn
, subr
);
811 argv
= (char **) scm_must_malloc ((argc
+ 1) * sizeof (char *), subr
);
812 for (i
= 0; !SCM_NULLP (args
); args
= SCM_CDR (args
), ++i
)
814 SCM arg
= SCM_CAR (args
);
819 SCM_ASSERT (SCM_STRINGP (arg
), args
, argn
, subr
);
820 len
= SCM_STRING_LENGTH (arg
);
821 src
= SCM_ROCHARS (arg
);
822 dst
= (char *) scm_must_malloc (len
+ 1, subr
);
823 memcpy (dst
, src
, len
);
831 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
832 (SCM filename
, SCM args
),
833 "Executes the file named by @var{path} as a new process image.\n"
834 "The remaining arguments are supplied to the process; from a C program\n"
835 "they are accessable as the @code{argv} argument to @code{main}.\n"
836 "Conventionally the first @var{arg} is the same as @var{path}.\n"
837 "All arguments must be strings. \n\n"
838 "If @var{arg} is missing, @var{path} is executed with a null\n"
839 "argument list, which may have system-dependent side-effects.\n\n"
840 "This procedure is currently implemented using the @code{execv} system\n"
841 "call, but we call it @code{execl} because of its Scheme calling interface.")
842 #define FUNC_NAME s_scm_execl
845 SCM_VALIDATE_STRING (1, filename
);
846 SCM_STRING_COERCE_0TERMINATION_X (filename
);
847 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
848 execv (SCM_STRING_CHARS (filename
), execargv
);
855 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
856 (SCM filename
, SCM args
),
857 "Similar to @code{execl}, however if\n"
858 "@var{filename} does not contain a slash\n"
859 "then the file to execute will be located by searching the\n"
860 "directories listed in the @code{PATH} environment variable.\n\n"
861 "This procedure is currently implemented using the @code{execvp} system\n"
862 "call, but we call it @code{execlp} because of its Scheme calling interface.")
863 #define FUNC_NAME s_scm_execlp
866 SCM_VALIDATE_STRING (1, filename
);
867 SCM_STRING_COERCE_0TERMINATION_X (filename
);
868 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
869 execvp (SCM_STRING_CHARS (filename
), execargv
);
877 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
883 num_strings
= scm_ilength (envlist
);
884 SCM_ASSERT (num_strings
>= 0, envlist
, arg
, proc
);
885 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
887 scm_memory_error (proc
);
888 for (i
= 0; !SCM_NULLP (envlist
); ++i
, envlist
= SCM_CDR (envlist
))
890 SCM str
= SCM_CAR (envlist
);
894 SCM_ASSERT (SCM_STRINGP (str
), envlist
, arg
, proc
);
895 len
= SCM_STRING_LENGTH (str
);
896 src
= SCM_ROCHARS (str
);
897 result
[i
] = malloc (len
+ 1);
898 if (result
[i
] == NULL
)
899 scm_memory_error (proc
);
900 memcpy (result
[i
], src
, len
);
907 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
908 (SCM filename
, SCM env
, SCM args
),
909 "Similar to @code{execl}, but the environment of the new process is\n"
910 "specified by @var{env}, which must be a list of strings as returned by the\n"
911 "@code{environ} procedure.\n\n"
912 "This procedure is currently implemented using the @code{execve} system\n"
913 "call, but we call it @code{execle} because of its Scheme calling interface.")
914 #define FUNC_NAME s_scm_execle
919 SCM_VALIDATE_STRING (1, filename
);
920 SCM_STRING_COERCE_0TERMINATION_X (filename
);
922 execargv
= scm_convert_exec_args (args
, SCM_ARG1
, FUNC_NAME
);
923 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
924 execve (SCM_STRING_CHARS (filename
), execargv
, exec_env
);
931 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
933 "Creates a new \"child\" process by duplicating the current \"parent\" process.\n"
934 "In the child the return value is 0. In the parent the return value is\n"
935 "the integer process ID of the child.\n\n"
936 "This procedure has been renamed from @code{fork} to avoid a naming conflict\n"
937 "with the scsh fork.")
938 #define FUNC_NAME s_scm_fork
944 return SCM_MAKINUM (0L+pid
);
949 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
951 "Returns an object with some information about the computer system the\n"
952 "program is running on.")
953 #define FUNC_NAME s_scm_uname
956 SCM ans
= scm_make_vector (SCM_MAKINUM(5), SCM_UNSPECIFIED
);
957 SCM
*ve
= SCM_VELTS (ans
);
958 if (uname (&buf
) < 0)
960 ve
[0] = scm_makfrom0str (buf
.sysname
);
961 ve
[1] = scm_makfrom0str (buf
.nodename
);
962 ve
[2] = scm_makfrom0str (buf
.release
);
963 ve
[3] = scm_makfrom0str (buf
.version
);
964 ve
[4] = scm_makfrom0str (buf
.machine
);
967 ve[5] = scm_makfrom0str (buf.domainname);
972 #endif /* HAVE_UNAME */
974 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
976 "If @var{env} is omitted, returns the current environment as a list of strings.\n"
977 "Otherwise it sets the current environment, which is also the\n"
978 "default environment for child processes, to the supplied list of strings.\n"
979 "Each member of @var{env} should be of the form\n"
980 "@code{NAME=VALUE} and values of @code{NAME} should not be duplicated.\n"
981 "If @var{env} is supplied then the return value is unspecified.")
982 #define FUNC_NAME s_scm_environ
984 if (SCM_UNBNDP (env
))
985 return scm_makfromstrs (-1, environ
);
990 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
991 /* Free the old environment, except when called for the first
996 static int first
= 1;
999 for (ep
= environ
; *ep
!= NULL
; ep
++)
1001 free ((char *) environ
);
1005 environ
= new_environ
;
1006 return SCM_UNSPECIFIED
;
1013 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1015 "Create a new file in the file system with a unique name. The return\n"
1016 "value is the name of the new file. This function is implemented with\n"
1017 "the @code{tmpnam} function in the system libraries.")
1018 #define FUNC_NAME s_scm_tmpnam
1020 char name
[L_tmpnam
];
1021 SCM_SYSCALL (tmpnam (name
););
1022 return scm_makfrom0str (name
);
1028 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1029 (SCM pathname
, SCM actime
, SCM modtime
),
1030 "@code{utime} sets the access and modification times for\n"
1031 "the file named by @var{path}. If @var{actime} or @var{modtime}\n"
1032 "is not supplied, then the current time is used.\n"
1033 "@var{actime} and @var{modtime}\n"
1034 "must be integer time values as returned by the @code{current-time}\n"
1038 "(utime \"foo\" (- (current-time) 3600))\n"
1039 "@end smalllisp\n\n"
1040 "will set the access time to one hour in the past and the modification\n"
1041 "time to the current time.")
1042 #define FUNC_NAME s_scm_utime
1045 struct utimbuf utm_tmp
;
1047 SCM_VALIDATE_STRING (1, pathname
);
1048 SCM_STRING_COERCE_0TERMINATION_X (pathname
);
1049 if (SCM_UNBNDP (actime
))
1050 SCM_SYSCALL (time (&utm_tmp
.actime
));
1052 utm_tmp
.actime
= SCM_NUM2ULONG (2,actime
);
1054 if (SCM_UNBNDP (modtime
))
1055 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1057 utm_tmp
.modtime
= SCM_NUM2ULONG (3,modtime
);
1059 SCM_SYSCALL (rv
= utime (SCM_STRING_CHARS (pathname
), &utm_tmp
));
1062 return SCM_UNSPECIFIED
;
1066 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1067 (SCM path
, SCM how
),
1068 "Returns @code{#t} if @var{path} corresponds to an existing\n"
1069 "file and the current process\n"
1070 "has the type of access specified by @var{how}, otherwise \n"
1072 "@var{how} should be specified\n"
1073 "using the values of the variables listed below. Multiple values can\n"
1074 "be combined using a bitwise or, in which case @code{#t} will only\n"
1075 "be returned if all accesses are granted.\n\n"
1076 "Permissions are checked using the real id of the current process,\n"
1077 "not the effective id, although it's the effective id which determines\n"
1078 "whether the access would actually be granted.\n\n"
1080 "test for read permission.\n"
1083 "test for write permission.\n"
1086 "test for execute permission.\n"
1089 "test for existence of the file.\n"
1091 #define FUNC_NAME s_scm_access
1095 SCM_VALIDATE_STRING (1, path
);
1096 SCM_STRING_COERCE_0TERMINATION_X (path
);
1097 SCM_VALIDATE_INUM (2, how
);
1098 rv
= access (SCM_STRING_CHARS (path
), SCM_INUM (how
));
1099 return SCM_NEGATE_BOOL(rv
);
1103 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1105 "Returns an integer representing the current process ID.")
1106 #define FUNC_NAME s_scm_getpid
1108 return SCM_MAKINUM ((unsigned long) getpid ());
1112 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1114 "Modifies the environment of the current process, which is\n"
1115 "also the default environment inherited by child processes.\n\n"
1116 "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n"
1117 "directly into the environment, replacing any existing environment string\n"
1119 "name matching @code{NAME}. If @var{string} does not contain an equal\n"
1120 "sign, then any existing string with name matching @var{string} will\n"
1122 "The return value is unspecified.")
1123 #define FUNC_NAME s_scm_putenv
1128 SCM_VALIDATE_STRING (1, str
);
1129 /* must make a new copy to be left in the environment, safe from gc. */
1130 ptr
= malloc (SCM_STRING_LENGTH (str
) + 1);
1133 strncpy (ptr
, SCM_ROCHARS (str
), SCM_STRING_LENGTH (str
));
1134 ptr
[SCM_STRING_LENGTH (str
)] = 0;
1138 return SCM_UNSPECIFIED
;
1142 #ifdef HAVE_SETLOCALE
1143 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1144 (SCM category
, SCM locale
),
1145 "If @var{locale} is omitted, returns the current value of the specified\n"
1146 "locale category \n"
1147 "as a system-dependent string.\n"
1148 "@var{category} should be specified using the values @code{LC_COLLATE},\n"
1149 "@code{LC_ALL} etc.\n\n"
1150 "Otherwise the specified locale category is set to\n"
1151 "the string @var{locale}\n"
1152 "and the new value is returned as a system-dependent string. If @var{locale}\n"
1153 "is an empty string, the locale will be set using envirionment variables.")
1154 #define FUNC_NAME s_scm_setlocale
1159 SCM_VALIDATE_INUM (1,category
);
1160 if (SCM_UNBNDP (locale
))
1166 SCM_VALIDATE_STRING (2, locale
);
1167 SCM_STRING_COERCE_0TERMINATION_X (locale
);
1168 clocale
= SCM_STRING_CHARS (locale
);
1171 rv
= setlocale (SCM_INUM (category
), clocale
);
1174 return scm_makfrom0str (rv
);
1177 #endif /* HAVE_SETLOCALE */
1180 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1181 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1182 "Creates a new special file, such as a file corresponding to a device.\n"
1183 "@var{path} specifies the name of the file. @var{type} should\n"
1184 "be one of the following symbols:\n"
1185 "regular, directory, symlink, block-special, char-special,\n"
1186 "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n"
1187 "@var{dev} (an integer) specifies which device the special file refers\n"
1188 "to. Its exact interpretation depends on the kind of special file\n"
1189 "being created.\n\n"
1192 "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))\n"
1194 "The return value is unspecified.")
1195 #define FUNC_NAME s_scm_mknod
1201 SCM_VALIDATE_STRING (1, path
);
1202 SCM_VALIDATE_SYMBOL (2,type
);
1203 SCM_VALIDATE_INUM (3,perms
);
1204 SCM_VALIDATE_INUM (4,dev
);
1205 SCM_STRING_COERCE_0TERMINATION_X (path
);
1207 p
= SCM_SYMBOL_CHARS (type
);
1208 if (strcmp (p
, "regular") == 0)
1210 else if (strcmp (p
, "directory") == 0)
1212 else if (strcmp (p
, "symlink") == 0)
1214 else if (strcmp (p
, "block-special") == 0)
1216 else if (strcmp (p
, "char-special") == 0)
1218 else if (strcmp (p
, "fifo") == 0)
1221 else if (strcmp (p
, "socket") == 0)
1225 SCM_OUT_OF_RANGE (2,type
);
1227 SCM_SYSCALL (val
= mknod (SCM_STRING_CHARS (path
), ctype
| SCM_INUM (perms
),
1231 return SCM_UNSPECIFIED
;
1234 #endif /* HAVE_MKNOD */
1237 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1239 "Increment the priority of the current process by @var{incr}. A higher\n"
1240 "priority value means that the process runs less often.\n"
1241 "The return value is unspecified.")
1242 #define FUNC_NAME s_scm_nice
1244 SCM_VALIDATE_INUM (1,incr
);
1245 if (nice(SCM_INUM(incr
)) != 0)
1247 return SCM_UNSPECIFIED
;
1250 #endif /* HAVE_NICE */
1253 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1255 "Flush the operating system disk buffers.\n"
1256 "The return value is unspecified.")
1257 #define FUNC_NAME s_scm_sync
1260 return SCM_UNSPECIFIED
;
1263 #endif /* HAVE_SYNC */
1268 scm_add_feature ("posix");
1270 scm_add_feature ("EIDs");
1273 scm_sysintern ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1276 scm_sysintern ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1279 scm_sysintern ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1282 scm_sysintern ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1285 /* access() symbols. */
1286 scm_sysintern ("R_OK", SCM_MAKINUM (R_OK
));
1287 scm_sysintern ("W_OK", SCM_MAKINUM (W_OK
));
1288 scm_sysintern ("X_OK", SCM_MAKINUM (X_OK
));
1289 scm_sysintern ("F_OK", SCM_MAKINUM (F_OK
));
1292 scm_sysintern ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1295 scm_sysintern ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1298 scm_sysintern ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1301 scm_sysintern ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1304 scm_sysintern ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1307 scm_sysintern ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1310 scm_sysintern ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1313 scm_sysintern ("PIPE_BUF", scm_long2num (PIPE_BUF
));
1316 #include "libguile/cpp_sig_symbols.c"
1317 #include "libguile/posix.x"