1 /* Copyright (C) 1995, 1996, 1997, 1998 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 */
53 #include "scm_validate.h"
60 #ifdef TIME_WITH_SYS_TIME
61 # include <sys/time.h>
65 # include <sys/time.h>
75 extern char *ttyname();
79 #ifdef LIBC_H_WITH_UNISTD_H
83 #include <sys/types.h>
90 # include <sys/wait.h>
93 # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
96 # define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
101 extern FILE *popen ();
102 extern char ** environ
;
105 #include <sys/utsname.h>
109 # define NAMLEN(dirent) strlen((dirent)->d_name)
111 # define dirent direct
112 # define NAMLEN(dirent) (dirent)->d_namlen
114 # include <sys/ndir.h>
117 # include <sys/dir.h>
124 #ifdef HAVE_SETLOCALE
128 /* Some Unix systems don't define these. CPP hair is dangerous, but
129 this seems safe enough... */
146 /* On NextStep, <utime.h> doesn't define struct utime, unless we
147 #define _POSIX_SOURCE before #including it. I think this is less
148 of a kludge than defining struct utimbuf ourselves. */
149 #ifdef UTIMBUF_NEEDS_POSIX
150 #define _POSIX_SOURCE
153 #ifdef HAVE_SYS_UTIME_H
154 #include <sys/utime.h>
161 /* Please don't add any more #includes or #defines here. The hack
162 above means that _POSIX_SOURCE may be #defined, which will
163 encourage header files to do strange things. */
166 SCM_SYMBOL (sym_read_pipe
, "read pipe");
167 SCM_SYMBOL (sym_write_pipe
, "write pipe");
169 SCM_DEFINE (scm_pipe
, "pipe", 0, 0, 0,
171 "Creates a pipe which can be used for communication. The return value
172 is a pair in which the CAR contains an input port and the CDR an
173 output port. Data written to the output port can be read from the
174 input port. Note that both ports are buffered so it may be necessary
175 to flush the output port before data will actually be sent across the pipe.
176 Alternatively a buffer can be added to the port using @code{setvbuf}
178 #define FUNC_NAME s_scm_pipe
187 p_rd
= scm_fdes_to_port (fd
[0], "r", sym_read_pipe
);
188 p_wt
= scm_fdes_to_port (fd
[1], "w", sym_write_pipe
);
189 return scm_cons (p_rd
, p_wt
);
194 #ifdef HAVE_GETGROUPS
195 SCM_DEFINE (scm_getgroups
, "getgroups", 0, 0, 0,
197 "Returns a vector of integers representing the current supplimentary group IDs.")
198 #define FUNC_NAME s_scm_getgroups
201 int ngroups
= getgroups (0, NULL
);
210 groups
= SCM_MUST_MALLOC_TYPE_NUM(GETGROUPS_T
,ngroups
);
211 val
= getgroups(ngroups
, groups
);
215 scm_must_free((char *)groups
);
219 SCM_SETCHARS(grps
, groups
); /* set up grps as a GC protect */
220 SCM_SETLENGTH(grps
, 0L + ngroups
* sizeof(GETGROUPS_T
), scm_tc7_string
);
221 ans
= scm_make_vector (SCM_MAKINUM(ngroups
), SCM_UNDEFINED
);
222 while (--ngroups
>= 0) SCM_VELTS(ans
)[ngroups
] = SCM_MAKINUM(groups
[ngroups
]);
223 SCM_SETCHARS(grps
, groups
); /* to make sure grps stays around. */
232 SCM_DEFINE (scm_getpwuid
, "getpw", 0, 1, 0,
234 "Look up an entry in the user database. @var{obj} can be an integer,
235 a string, or omitted, giving the behaviour of getpwuid, getpwnam
236 or getpwent respectively.")
237 #define FUNC_NAME s_scm_getpwuid
240 struct passwd
*entry
;
243 result
= scm_make_vector (SCM_MAKINUM (7), SCM_UNSPECIFIED
);
244 ve
= SCM_VELTS (result
);
245 if (SCM_UNBNDP (user
) || SCM_FALSEP (user
))
247 SCM_SYSCALL (entry
= getpwent ());
253 else if (SCM_INUMP (user
))
255 entry
= getpwuid (SCM_INUM (user
));
259 SCM_VALIDATE_ROSTRING(1,user
);
260 if (SCM_SUBSTRP (user
))
261 user
= scm_makfromstr (SCM_ROCHARS (user
), SCM_ROLENGTH (user
), 0);
262 entry
= getpwnam (SCM_ROCHARS (user
));
265 SCM_MISC_ERROR ("entry not found", SCM_EOL
);
267 ve
[0] = scm_makfrom0str (entry
->pw_name
);
268 ve
[1] = scm_makfrom0str (entry
->pw_passwd
);
269 ve
[2] = scm_ulong2num ((unsigned long) entry
->pw_uid
);
270 ve
[3] = scm_ulong2num ((unsigned long) entry
->pw_gid
);
271 ve
[4] = scm_makfrom0str (entry
->pw_gecos
);
273 ve
[5] = scm_makfrom0str ("");
275 ve
[5] = scm_makfrom0str (entry
->pw_dir
);
276 if (!entry
->pw_shell
)
277 ve
[6] = scm_makfrom0str ("");
279 ve
[6] = scm_makfrom0str (entry
->pw_shell
);
286 SCM_DEFINE (scm_setpwent
, "setpw", 0, 1, 0,
288 "If called with a true argument, initialize or reset the password data
289 stream. Otherwise, close the stream. The @code{setpwent} and
290 @code{endpwent} procedures are implemented on top of this.")
291 #define FUNC_NAME s_scm_setpwent
293 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
297 return SCM_UNSPECIFIED
;
304 /* Combines getgrgid and getgrnam. */
305 SCM_DEFINE (scm_getgrgid
, "getgr", 0, 1, 0,
307 "Look up an entry in the group database. @var{obj} can be an integer,
308 a string, or omitted, giving the behaviour of getgrgid, getgrnam
309 or getgrent respectively.")
310 #define FUNC_NAME s_scm_getgrgid
315 result
= scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED
);
316 ve
= SCM_VELTS (result
);
317 if (SCM_UNBNDP (name
) || (name
== SCM_BOOL_F
))
319 SCM_SYSCALL (entry
= getgrent ());
325 else if (SCM_INUMP (name
))
326 SCM_SYSCALL (entry
= getgrgid (SCM_INUM (name
)));
329 SCM_VALIDATE_ROSTRING(1,name
);
330 SCM_COERCE_SUBSTR (name
);
331 SCM_SYSCALL (entry
= getgrnam (SCM_ROCHARS (name
)));
336 ve
[0] = scm_makfrom0str (entry
->gr_name
);
337 ve
[1] = scm_makfrom0str (entry
->gr_passwd
);
338 ve
[2] = scm_ulong2num ((unsigned long) entry
->gr_gid
);
339 ve
[3] = scm_makfromstrs (-1, entry
->gr_mem
);
346 SCM_DEFINE (scm_setgrent
, "setgr", 0, 1, 0,
348 "If called with a true argument, initialize or reset the group data
349 stream. Otherwise, close the stream. The @code{setgrent} and
350 @code{endgrent} procedures are implemented on top of this.")
351 #define FUNC_NAME s_scm_setgrent
353 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
357 return SCM_UNSPECIFIED
;
363 SCM_DEFINE (scm_kill
, "kill", 2, 0, 0,
365 "Sends a signal to the specified process or group of processes.
367 @var{pid} specifies the processes to which the signal is sent:
370 @item @var{pid} greater than 0
371 The process whose identifier is @var{pid}.
372 @item @var{pid} equal to 0
373 All processes in the current process group.
374 @item @var{pid} less than -1
375 The process group whose identifier is -@var{pid}
376 @item @var{pid} equal to -1
377 If the process is privileged, all processes except for some special
378 system processes. Otherwise, all processes with the current effective
382 @var{sig} should be specified using a variable corresponding to
383 the Unix symbolic name, e.g.,
392 #define FUNC_NAME s_scm_kill
394 SCM_VALIDATE_INUM(1,pid
);
395 SCM_VALIDATE_INUM(2,sig
);
396 /* Signal values are interned in scm_init_posix(). */
397 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
399 return SCM_UNSPECIFIED
;
404 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
405 (SCM pid
, SCM options
),
406 "This procedure collects status information from a child process which
407 has terminated or (optionally) stopped. Normally it will
408 suspend the calling process until this can be done. If more than one
409 child process is eligible then one will be chosen by the operating system.
411 The value of @var{pid} determines the behaviour:
414 @item @var{pid} greater than 0
415 Request status information from the specified child process.
416 @item @var{pid} equal to -1 or WAIT_ANY
417 Request status information for any child process.
418 @item @var{pid} equal to 0 or WAIT_MYPGRP
419 Request status information for any child process in the current process
421 @item @var{pid} less than -1
422 Request status information for any child process whose process group ID
426 The @var{options} argument, if supplied, should be the bitwise OR of the
427 values of zero or more of the following variables:
430 Return immediately even if there are no child processes to be collected.
434 Report status information for stopped processes as well as terminated
438 The return value is a pair containing:
442 The process ID of the child process, or 0 if @code{WNOHANG} was
443 specified and no process was collected.
445 The integer status value.
447 #define FUNC_NAME s_scm_waitpid
452 SCM_VALIDATE_INUM(1,pid
);
453 if (SCM_UNBNDP (options
))
457 SCM_VALIDATE_INUM(2,options
);
458 /* Flags are interned in scm_init_posix. */
459 ioptions
= SCM_INUM (options
);
461 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
464 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
467 #endif /* HAVE_WAITPID */
469 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
471 "Returns the exit status value, as would be
472 set if a process ended normally through a
473 call to @code{exit} or @code{_exit}, if any, otherwise @code{#f}.")
474 #define FUNC_NAME s_scm_status_exit_val
478 SCM_VALIDATE_INUM(1,status
);
480 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
481 go figure. SCM_INUM does not yield an lvalue. */
482 lstatus
= SCM_INUM (status
);
483 if (WIFEXITED (lstatus
))
484 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
490 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
492 "Returns the signal number which terminated the
493 process, if any, otherwise @code{#f}.")
494 #define FUNC_NAME s_scm_status_term_sig
498 SCM_VALIDATE_INUM(1,status
);
500 lstatus
= SCM_INUM (status
);
501 if (WIFSIGNALED (lstatus
))
502 return SCM_MAKINUM (WTERMSIG (lstatus
));
508 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
510 "Returns the signal number which stopped the
511 process, if any, otherwise @code{#f}.")
512 #define FUNC_NAME s_scm_status_stop_sig
516 SCM_VALIDATE_INUM(1,status
);
518 lstatus
= SCM_INUM (status
);
519 if (WIFSTOPPED (lstatus
))
520 return SCM_MAKINUM (WSTOPSIG (lstatus
));
526 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
528 "Returns an integer representing the process ID of the parent process.")
529 #define FUNC_NAME s_scm_getppid
531 return SCM_MAKINUM (0L + getppid ());
537 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
539 "Returns an integer representing the current real user ID.")
540 #define FUNC_NAME s_scm_getuid
542 return SCM_MAKINUM (0L + getuid ());
548 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
550 "Returns an integer representing the current real group ID.")
551 #define FUNC_NAME s_scm_getgid
553 return SCM_MAKINUM (0L + getgid ());
559 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
561 "Returns an integer representing the current effective user ID.
562 If the system does not support effective IDs, then the real ID
563 is returned. @code{(feature? 'EIDs)} reports whether the system
564 supports effective IDs.")
565 #define FUNC_NAME s_scm_geteuid
568 return SCM_MAKINUM (0L + geteuid ());
570 return SCM_MAKINUM (0L + getuid ());
577 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
579 "Returns an integer representing the current effective group ID.
580 If the system does not support effective IDs, then the real ID
581 is returned. @code{(feature? 'EIDs)} reports whether the system
582 supports effective IDs.")
583 #define FUNC_NAME s_scm_getegid
586 return SCM_MAKINUM (0L + getegid ());
588 return SCM_MAKINUM (0L + getgid ());
594 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
596 "Sets both the real and effective user IDs to the integer @var{id}, provided
597 the process has appropriate privileges.
598 The return value is unspecified.")
599 #define FUNC_NAME s_scm_setuid
601 SCM_VALIDATE_INUM(1,id
);
602 if (setuid (SCM_INUM (id
)) != 0)
604 return SCM_UNSPECIFIED
;
608 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
610 "Sets both the real and effective group IDs to the integer @var{id}, provided
611 the process has appropriate privileges.
612 The return value is unspecified.")
613 #define FUNC_NAME s_scm_setgid
615 SCM_VALIDATE_INUM(1,id
);
616 if (setgid (SCM_INUM (id
)) != 0)
618 return SCM_UNSPECIFIED
;
622 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
624 "Sets the effective user ID to the integer @var{id}, provided the process
625 has appropriate privileges. If effective IDs are not supported, the
626 real ID is set instead -- @code{(feature? 'EIDs)} reports whether the
627 system supports effective IDs.
628 The return value is unspecified.")
629 #define FUNC_NAME s_scm_seteuid
633 SCM_VALIDATE_INUM(1,id
);
635 rv
= seteuid (SCM_INUM (id
));
637 rv
= setuid (SCM_INUM (id
));
641 return SCM_UNSPECIFIED
;
646 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
648 "Sets the effective group ID to the integer @var{id}, provided the process
649 has appropriate privileges. If effective IDs are not supported, the
650 real ID is set instead -- @code{(feature? 'EIDs)} reports whether the
651 system supports effective IDs.
652 The return value is unspecified.")
653 #define FUNC_NAME s_scm_setegid
657 SCM_VALIDATE_INUM(1,id
);
659 rv
= setegid (SCM_INUM (id
));
661 rv
= setgid (SCM_INUM (id
));
665 return SCM_UNSPECIFIED
;
671 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
673 "Returns an integer representing the current process group ID.
674 This is the POSIX definition, not BSD.")
675 #define FUNC_NAME s_scm_getpgrp
678 fn
= (int (*) ()) getpgrp
;
679 return SCM_MAKINUM (fn (0));
683 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
685 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or
686 @var{pgid} must be integers: they can be zero to indicate the ID of the
688 Fails on systems that do not support job control.
689 The return value is unspecified.")
690 #define FUNC_NAME s_scm_setpgid
693 SCM_VALIDATE_INUM(1,pid
);
694 SCM_VALIDATE_INUM(2,pgid
);
695 /* FIXME(?): may be known as setpgrp. */
696 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
698 return SCM_UNSPECIFIED
;
707 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
709 "Creates a new session. The current process becomes the session leader
710 and is put in a new process group. The process will be detached
711 from its controlling terminal if it has one.
712 The return value is an integer representing the new process group ID.")
713 #define FUNC_NAME s_scm_setsid
716 pid_t sid
= setsid ();
719 return SCM_UNSPECIFIED
;
728 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
730 "Returns a string with the name of the serial terminal device underlying
732 #define FUNC_NAME s_scm_ttyname
737 port
= SCM_COERCE_OUTPORT (port
);
738 SCM_VALIDATE_OPPORT(1,port
);
739 if (scm_tc16_fport
!= SCM_TYP16 (port
))
741 fd
= SCM_FPORT_FDES (port
);
742 SCM_SYSCALL (ans
= ttyname (fd
));
745 /* ans could be overwritten by another call to ttyname */
746 return (scm_makfrom0str (ans
));
751 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
753 "Returns a string containing the file name of the controlling terminal
754 for the current process.")
755 #define FUNC_NAME s_scm_ctermid
758 char *result
= ctermid (NULL
);
761 return scm_makfrom0str (result
);
770 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
772 "Returns the process group ID of the foreground
773 process group associated with the terminal open on the file descriptor
774 underlying @var{port}.
776 If there is no foreground process group, the return value is a
777 number greater than 1 that does not match the process group ID
778 of any existing process group. This can happen if all of the
779 processes in the job that was formerly the foreground job have
780 terminated, and no other job has yet been moved into the
782 #define FUNC_NAME s_scm_tcgetpgrp
784 #ifdef HAVE_TCGETPGRP
788 port
= SCM_COERCE_OUTPORT (port
);
790 SCM_VALIDATE_OPFPORT(1,port
);
791 fd
= SCM_FPORT_FDES (port
);
792 if ((pgid
= tcgetpgrp (fd
)) == -1)
794 return SCM_MAKINUM (pgid
);
803 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
804 (SCM port
, SCM pgid
),
805 "Set the foreground process group ID for the terminal used by the file
806 descriptor underlying @var{port} to the integer @var{pgid}.
808 must be a member of the same session as @var{pgid} and must have the same
809 controlling terminal. The return value is unspecified.")
810 #define FUNC_NAME s_scm_tcsetpgrp
812 #ifdef HAVE_TCSETPGRP
815 port
= SCM_COERCE_OUTPORT (port
);
817 SCM_VALIDATE_OPFPORT(1,port
);
818 SCM_VALIDATE_INUM(2,pgid
);
819 fd
= SCM_FPORT_FDES (port
);
820 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
822 return SCM_UNSPECIFIED
;
832 /* Copy exec args from an SCM vector into a new C array. */
835 scm_convert_exec_args (SCM args
, int pos
, const char *subr
)
841 SCM_ASSERT (SCM_NULLP (args
)
842 || (SCM_CONSP (args
)),
844 num_args
= scm_ilength (args
);
846 scm_must_malloc ((num_args
+ 1) * sizeof (char *), subr
);
847 for (i
= 0; SCM_NNULLP (args
); args
= SCM_CDR (args
), ++i
)
852 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (args
)),
853 SCM_CAR (args
), SCM_ARGn
, subr
);
854 len
= 1 + SCM_ROLENGTH (SCM_CAR (args
));
855 dst
= (char *) scm_must_malloc ((long) len
, subr
);
856 src
= SCM_ROCHARS (SCM_CAR (args
));
865 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
866 (SCM filename
, SCM args
),
867 "Executes the file named by @var{path} as a new process image.
868 The remaining arguments are supplied to the process; from a C program
869 they are accessable as the @code{argv} argument to @code{main}.
870 Conventionally the first @var{arg} is the same as @var{path}.
871 All arguments must be strings.
873 If @var{arg} is missing, @var{path} is executed with a null
874 argument list, which may have system-dependent side-effects.
876 This procedure is currently implemented using the @code{execv} system
877 call, but we call it @code{execl} because of its Scheme calling interface.")
878 #define FUNC_NAME s_scm_execl
881 SCM_VALIDATE_ROSTRING(1,filename
);
882 SCM_COERCE_SUBSTR (filename
);
883 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
884 execv (SCM_ROCHARS (filename
), execargv
);
891 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
892 (SCM filename
, SCM args
),
893 "Similar to @code{execl}, however if
894 @var{filename} does not contain a slash
895 then the file to execute will be located by searching the
896 directories listed in the @code{PATH} environment variable.
898 This procedure is currently implemented using the @code{execlv} system
899 call, but we call it @code{execlp} because of its Scheme calling interface.")
900 #define FUNC_NAME s_scm_execlp
903 SCM_VALIDATE_ROSTRING(1,filename
);
904 SCM_COERCE_SUBSTR (filename
);
905 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
906 execvp (SCM_ROCHARS (filename
), execargv
);
914 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
920 SCM_ASSERT (SCM_NULLP (envlist
) || SCM_CONSP (envlist
),
922 num_strings
= scm_ilength (envlist
);
923 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
925 scm_memory_error (proc
);
926 while (SCM_NNULLP (envlist
))
931 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (envlist
)),
933 len
= 1 + SCM_ROLENGTH (SCM_CAR (envlist
));
934 result
[i
] = malloc ((long) len
);
935 if (result
[i
] == NULL
)
936 scm_memory_error (proc
);
937 src
= SCM_ROCHARS (SCM_CAR (envlist
));
939 result
[i
][len
] = src
[len
];
940 envlist
= SCM_CDR (envlist
);
947 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
948 (SCM filename
, SCM env
, SCM args
),
949 "Similar to @code{execl}, but the environment of the new process is
950 specified by @var{env}, which must be a list of strings as returned by the
951 @code{environ} procedure.
953 This procedure is currently implemented using the @code{execve} system
954 call, but we call it @code{execle} because of its Scheme calling interface.")
955 #define FUNC_NAME s_scm_execle
960 SCM_VALIDATE_ROSTRING(1,filename
);
961 SCM_COERCE_SUBSTR (filename
);
963 execargv
= scm_convert_exec_args (args
, SCM_ARG1
, FUNC_NAME
);
964 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
965 execve (SCM_ROCHARS (filename
), execargv
, exec_env
);
972 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
974 "Creates a new \"child\" process by duplicating the current \"parent\" process.
975 In the child the return value is 0. In the parent the return value is
976 the integer process ID of the child.
978 This procedure has been renamed from @code{fork} to avoid a naming conflict
979 with the scsh fork.")
980 #define FUNC_NAME s_scm_fork
986 return SCM_MAKINUM (0L+pid
);
991 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
993 "Returns an object with some information about the computer system the
994 program is running on.")
995 #define FUNC_NAME s_scm_uname
999 SCM ans
= scm_make_vector (SCM_MAKINUM(5), SCM_UNSPECIFIED
);
1000 SCM
*ve
= SCM_VELTS (ans
);
1001 if (uname (&buf
) < 0)
1003 ve
[0] = scm_makfrom0str (buf
.sysname
);
1004 ve
[1] = scm_makfrom0str (buf
.nodename
);
1005 ve
[2] = scm_makfrom0str (buf
.release
);
1006 ve
[3] = scm_makfrom0str (buf
.version
);
1007 ve
[4] = scm_makfrom0str (buf
.machine
);
1010 ve[5] = scm_makfrom0str (buf.domainname);
1021 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
1023 "If @var{env} is omitted, returns the current environment as a list of strings.
1024 Otherwise it sets the current environment, which is also the
1025 default environment for child processes, to the supplied list of strings.
1026 Each member of @var{env} should be of the form
1027 @code{NAME=VALUE} and values of @code{NAME} should not be duplicated.
1028 If @var{env} is supplied then the return value is unspecified.")
1029 #define FUNC_NAME s_scm_environ
1031 if (SCM_UNBNDP (env
))
1032 return scm_makfromstrs (-1, environ
);
1037 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
1038 /* Free the old environment, except when called for the first
1043 static int first
= 1;
1046 for (ep
= environ
; *ep
!= NULL
; ep
++)
1048 free ((char *) environ
);
1052 environ
= new_environ
;
1053 return SCM_UNSPECIFIED
;
1060 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1062 "Create a new file in the file system with a unique name. The return
1063 value is the name of the new file. This function is implemented with
1064 the @code{tmpnam} function in the system libraries.")
1065 #define FUNC_NAME s_scm_tmpnam
1067 char name
[L_tmpnam
];
1068 SCM_SYSCALL (tmpnam (name
););
1069 return scm_makfrom0str (name
);
1075 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1076 (SCM pathname
, SCM actime
, SCM modtime
),
1077 "@code{utime} sets the access and modification times for
1078 the file named by @var{path}. If @var{actime} or @var{modtime}
1079 is not supplied, then the current time is used.
1080 @var{actime} and @var{modtime}
1081 must be integer time values as returned by the @code{current-time}
1087 (utime \"foo\" (- (current-time) 3600))
1090 will set the access time to one hour in the past and the modification
1091 time to the current time.")
1092 #define FUNC_NAME s_scm_utime
1095 struct utimbuf utm_tmp
;
1097 SCM_VALIDATE_ROSTRING(1,pathname
);
1098 SCM_COERCE_SUBSTR (pathname
);
1099 if (SCM_UNBNDP (actime
))
1100 SCM_SYSCALL (time (&utm_tmp
.actime
));
1102 utm_tmp
.actime
= SCM_NUM2ULONG (2,actime
);
1104 if (SCM_UNBNDP (modtime
))
1105 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1107 utm_tmp
.modtime
= SCM_NUM2ULONG (3,modtime
);
1109 SCM_SYSCALL (rv
= utime (SCM_ROCHARS (pathname
), &utm_tmp
));
1112 return SCM_UNSPECIFIED
;
1116 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1117 (SCM path
, SCM how
),
1118 "Returns @code{#t} if @var{path} corresponds to an existing
1119 file and the current process
1120 has the type of access specified by @var{how}, otherwise
1122 @var{how} should be specified
1123 using the values of the variables listed below. Multiple values can
1124 be combined using a bitwise or, in which case @code{#t} will only
1125 be returned if all accesses are granted.
1127 Permissions are checked using the real id of the current process,
1128 not the effective id, although it's the effective id which determines
1129 whether the access would actually be granted.
1132 test for read permission.
1135 test for write permission.
1138 test for execute permission.
1141 test for existence of the file.
1143 #define FUNC_NAME s_scm_access
1147 SCM_VALIDATE_ROSTRING(1,path
);
1148 if (SCM_SUBSTRP (path
))
1149 path
= scm_makfromstr (SCM_ROCHARS (path
), SCM_ROLENGTH (path
), 0);
1150 SCM_VALIDATE_INUM(2,how
);
1151 rv
= access (SCM_ROCHARS (path
), SCM_INUM (how
));
1152 return SCM_NEGATE_BOOL(rv
);
1156 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1158 "Returns an integer representing the current process ID.")
1159 #define FUNC_NAME s_scm_getpid
1161 return SCM_MAKINUM ((unsigned long) getpid ());
1165 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1167 "Modifies the environment of the current process, which is
1168 also the default environment inherited by child processes.
1170 If @var{string} is of the form @code{NAME=VALUE} then it will be written
1171 directly into the environment, replacing any existing environment string
1173 name matching @code{NAME}. If @var{string} does not contain an equal
1174 sign, then any existing string with name matching @var{string} will
1177 The return value is unspecified.")
1178 #define FUNC_NAME s_scm_putenv
1183 SCM_VALIDATE_ROSTRING(1,str
);
1184 /* must make a new copy to be left in the environment, safe from gc. */
1185 ptr
= malloc (SCM_LENGTH (str
) + 1);
1188 strncpy (ptr
, SCM_ROCHARS (str
), SCM_LENGTH (str
));
1189 ptr
[SCM_LENGTH(str
)] = 0;
1193 return SCM_UNSPECIFIED
;
1197 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1198 (SCM category
, SCM locale
),
1199 "If @var{locale} is omitted, returns the current value of the specified
1201 as a system-dependent string.
1202 @var{category} should be specified using the values @code{LC_COLLATE},
1205 Otherwise the specified locale category is set to
1206 the string @var{locale}
1207 and the new value is returned as a system-dependent string. If @var{locale}
1208 is an empty string, the locale will be set using envirionment variables.")
1209 #define FUNC_NAME s_scm_setlocale
1211 #ifdef HAVE_SETLOCALE
1215 SCM_VALIDATE_INUM(1,category
);
1216 if (SCM_UNBNDP (locale
))
1222 SCM_VALIDATE_ROSTRING(2,locale
);
1223 SCM_COERCE_SUBSTR (locale
);
1224 clocale
= SCM_ROCHARS (locale
);
1227 rv
= setlocale (SCM_INUM (category
), clocale
);
1230 return scm_makfrom0str (rv
);
1239 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1240 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1241 "Creates a new special file, such as a file corresponding to a device.
1242 @var{path} specifies the name of the file. @var{type} should
1243 be one of the following symbols:
1244 regular, directory, symlink, block-special, char-special,
1245 fifo, or socket. @var{perms} (an integer) specifies the file permissions.
1246 @var{dev} (an integer) specifies which device the special file refers
1247 to. Its exact interpretation depends on the kind of special file
1252 (mknod "/dev
/fd0
" 'block-special #o660 (+ (* 2 256) 2))
1255 The return value is unspecified.")
1256 #define FUNC_NAME s_scm_mknod
1263 SCM_VALIDATE_ROSTRING(1,path
);
1264 SCM_VALIDATE_SYMBOL(2,type
);
1265 SCM_VALIDATE_INUM(3,perms
);
1266 SCM_VALIDATE_INUM(4,dev
);
1267 SCM_COERCE_SUBSTR (path
);
1269 p
= SCM_CHARS (type
);
1270 if (strcmp (p
, "regular") == 0)
1272 else if (strcmp (p
, "directory") == 0)
1274 else if (strcmp (p
, "symlink") == 0)
1276 else if (strcmp (p
, "block-special") == 0)
1278 else if (strcmp (p
, "char-special") == 0)
1280 else if (strcmp (p
, "fifo") == 0)
1282 else if (strcmp (p
, "socket") == 0)
1285 SCM_OUT_OF_RANGE (2,type
);
1287 SCM_SYSCALL (val
= mknod(SCM_ROCHARS(path
), ctype
| SCM_INUM (perms
),
1291 return SCM_UNSPECIFIED
;
1301 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1303 "Increment the priority of the current process by @var{incr}. A higher
1304 priority value means that the process runs less often.
1305 The return value is unspecified.")
1306 #define FUNC_NAME s_scm_nice
1309 SCM_VALIDATE_INUM(1,incr
);
1310 if (nice(SCM_INUM(incr
)) != 0)
1312 return SCM_UNSPECIFIED
;
1322 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1324 "Flush the operating system disk buffers.
1325 The return value is unspecified.")
1326 #define FUNC_NAME s_scm_sync
1334 return SCM_UNSPECIFIED
;
1341 scm_add_feature ("posix");
1343 scm_add_feature ("EIDs");
1346 scm_sysintern ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1349 scm_sysintern ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1352 scm_sysintern ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1355 scm_sysintern ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1358 /* access() symbols. */
1359 scm_sysintern ("R_OK", SCM_MAKINUM (R_OK
));
1360 scm_sysintern ("W_OK", SCM_MAKINUM (W_OK
));
1361 scm_sysintern ("X_OK", SCM_MAKINUM (X_OK
));
1362 scm_sysintern ("F_OK", SCM_MAKINUM (F_OK
));
1365 scm_sysintern ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1368 scm_sysintern ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1371 scm_sysintern ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1374 scm_sysintern ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1377 scm_sysintern ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1380 scm_sysintern ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1383 scm_sysintern ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1385 #include "cpp_sig_symbols.c"