1 /* Copyright (C) 1995-2000 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 */
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\n"
172 "is a pair in which the CAR contains an input port and the CDR an\n"
173 "output port. Data written to the output port can be read from the\n"
174 "input port. Note that both ports are buffered so it may be necessary\n"
175 "to flush the output port before data will actually be sent across the pipe.\n"
176 "Alternatively a buffer can be added to the port using @code{setvbuf}\n"
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,\n"
235 "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n"
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\n"
289 "stream. Otherwise, close the stream. The @code{setpwent} and\n"
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,\n"
308 "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n"
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\n"
349 "stream. Otherwise, close the stream. The @code{setgrent} and\n"
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.\n\n"
366 "@var{pid} specifies the processes to which the signal is sent:\n\n"
368 "@item @var{pid} greater than 0\n"
369 "The process whose identifier is @var{pid}.\n"
370 "@item @var{pid} equal to 0\n"
371 "All processes in the current process group.\n"
372 "@item @var{pid} less than -1\n"
373 "The process group whose identifier is -@var{pid}\n"
374 "@item @var{pid} equal to -1\n"
375 "If the process is privileged, all processes except for some special\n"
376 "system processes. Otherwise, all processes with the current effective\n"
379 "@var{sig} should be specified using a variable corresponding to\n"
380 "the Unix symbolic name, e.g.,\n\n"
385 "Interrupt signal.\n"
387 #define FUNC_NAME s_scm_kill
389 SCM_VALIDATE_INUM (1,pid
);
390 SCM_VALIDATE_INUM (2,sig
);
391 /* Signal values are interned in scm_init_posix(). */
392 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
394 return SCM_UNSPECIFIED
;
399 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
400 (SCM pid
, SCM options
),
401 "This procedure collects status information from a child process which\n"
402 "has terminated or (optionally) stopped. Normally it will\n"
403 "suspend the calling process until this can be done. If more than one\n"
404 "child process is eligible then one will be chosen by the operating system.\n\n"
405 "The value of @var{pid} determines the behaviour:\n\n"
407 "@item @var{pid} greater than 0\n"
408 "Request status information from the specified child process.\n"
409 "@item @var{pid} equal to -1 or WAIT_ANY\n"
410 "Request status information for any child process.\n"
411 "@item @var{pid} equal to 0 or WAIT_MYPGRP\n"
412 "Request status information for any child process in the current process\n"
414 "@item @var{pid} less than -1\n"
415 "Request status information for any child process whose process group ID\n"
418 "The @var{options} argument, if supplied, should be the bitwise OR of the\n"
419 "values of zero or more of the following variables:\n\n"
421 "Return immediately even if there are no child processes to be collected.\n"
423 "@defvar WUNTRACED\n"
424 "Report status information for stopped processes as well as terminated\n"
427 "The return value is a pair containing:\n\n"
430 "The process ID of the child process, or 0 if @code{WNOHANG} was\n"
431 "specified and no process was collected.\n"
433 "The integer status value.\n"
435 #define FUNC_NAME s_scm_waitpid
440 SCM_VALIDATE_INUM (1,pid
);
441 if (SCM_UNBNDP (options
))
445 SCM_VALIDATE_INUM (2,options
);
446 /* Flags are interned in scm_init_posix. */
447 ioptions
= SCM_INUM (options
);
449 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
452 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
455 #endif /* HAVE_WAITPID */
457 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
459 "Returns the exit status value, as would be\n"
460 "set if a process ended normally through a\n"
461 "call to @code{exit} or @code{_exit}, if any, otherwise @code{#f}.")
462 #define FUNC_NAME s_scm_status_exit_val
466 SCM_VALIDATE_INUM (1,status
);
468 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
469 go figure. SCM_INUM does not yield an lvalue. */
470 lstatus
= SCM_INUM (status
);
471 if (WIFEXITED (lstatus
))
472 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
478 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
480 "Returns the signal number which terminated the\n"
481 "process, if any, otherwise @code{#f}.")
482 #define FUNC_NAME s_scm_status_term_sig
486 SCM_VALIDATE_INUM (1,status
);
488 lstatus
= SCM_INUM (status
);
489 if (WIFSIGNALED (lstatus
))
490 return SCM_MAKINUM (WTERMSIG (lstatus
));
496 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
498 "Returns the signal number which stopped the\n"
499 "process, if any, otherwise @code{#f}.")
500 #define FUNC_NAME s_scm_status_stop_sig
504 SCM_VALIDATE_INUM (1,status
);
506 lstatus
= SCM_INUM (status
);
507 if (WIFSTOPPED (lstatus
))
508 return SCM_MAKINUM (WSTOPSIG (lstatus
));
514 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
516 "Returns an integer representing the process ID of the parent process.")
517 #define FUNC_NAME s_scm_getppid
519 return SCM_MAKINUM (0L + getppid ());
525 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
527 "Returns an integer representing the current real user ID.")
528 #define FUNC_NAME s_scm_getuid
530 return SCM_MAKINUM (0L + getuid ());
536 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
538 "Returns an integer representing the current real group ID.")
539 #define FUNC_NAME s_scm_getgid
541 return SCM_MAKINUM (0L + getgid ());
547 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
549 "Returns an integer representing the current effective user ID.\n"
550 "If the system does not support effective IDs, then the real ID\n"
551 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
552 "supports effective IDs.")
553 #define FUNC_NAME s_scm_geteuid
556 return SCM_MAKINUM (0L + geteuid ());
558 return SCM_MAKINUM (0L + getuid ());
565 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
567 "Returns an integer representing the current effective group ID.\n"
568 "If the system does not support effective IDs, then the real ID\n"
569 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
570 "supports effective IDs.")
571 #define FUNC_NAME s_scm_getegid
574 return SCM_MAKINUM (0L + getegid ());
576 return SCM_MAKINUM (0L + getgid ());
582 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
584 "Sets both the real and effective user IDs to the integer @var{id}, provided\n"
585 "the process has appropriate privileges.\n"
586 "The return value is unspecified.")
587 #define FUNC_NAME s_scm_setuid
589 SCM_VALIDATE_INUM (1,id
);
590 if (setuid (SCM_INUM (id
)) != 0)
592 return SCM_UNSPECIFIED
;
596 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
598 "Sets both the real and effective group IDs to the integer @var{id}, provided\n"
599 "the process has appropriate privileges.\n"
600 "The return value is unspecified.")
601 #define FUNC_NAME s_scm_setgid
603 SCM_VALIDATE_INUM (1,id
);
604 if (setgid (SCM_INUM (id
)) != 0)
606 return SCM_UNSPECIFIED
;
610 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
612 "Sets the effective user ID to the integer @var{id}, provided the process\n"
613 "has appropriate privileges. If effective IDs are not supported, the\n"
614 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
615 "system supports effective IDs.\n"
616 "The return value is unspecified.")
617 #define FUNC_NAME s_scm_seteuid
621 SCM_VALIDATE_INUM (1,id
);
623 rv
= seteuid (SCM_INUM (id
));
625 rv
= setuid (SCM_INUM (id
));
629 return SCM_UNSPECIFIED
;
634 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
636 "Sets the effective group 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_setegid
645 SCM_VALIDATE_INUM (1,id
);
647 rv
= setegid (SCM_INUM (id
));
649 rv
= setgid (SCM_INUM (id
));
653 return SCM_UNSPECIFIED
;
659 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
661 "Returns an integer representing the current process group ID.\n"
662 "This is the POSIX definition, not BSD.")
663 #define FUNC_NAME s_scm_getpgrp
666 fn
= (int (*) ()) getpgrp
;
667 return SCM_MAKINUM (fn (0));
672 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
674 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n"
675 "@var{pgid} must be integers: they can be zero to indicate the ID of the\n"
677 "Fails on systems that do not support job control.\n"
678 "The return value is unspecified.")
679 #define FUNC_NAME s_scm_setpgid
681 SCM_VALIDATE_INUM (1,pid
);
682 SCM_VALIDATE_INUM (2,pgid
);
683 /* FIXME(?): may be known as setpgrp. */
684 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
686 return SCM_UNSPECIFIED
;
689 #endif /* HAVE_SETPGID */
692 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
694 "Creates a new session. The current process becomes the session leader\n"
695 "and is put in a new process group. The process will be detached\n"
696 "from its controlling terminal if it has one.\n"
697 "The return value is an integer representing the new process group ID.")
698 #define FUNC_NAME s_scm_setsid
700 pid_t sid
= setsid ();
703 return SCM_UNSPECIFIED
;
706 #endif /* HAVE_SETSID */
708 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
710 "Returns a string with the name of the serial terminal device underlying\n"
712 #define FUNC_NAME s_scm_ttyname
717 port
= SCM_COERCE_OUTPORT (port
);
718 SCM_VALIDATE_OPPORT (1,port
);
719 if (scm_tc16_fport
!= SCM_TYP16 (port
))
721 fd
= SCM_FPORT_FDES (port
);
722 SCM_SYSCALL (ans
= ttyname (fd
));
725 /* ans could be overwritten by another call to ttyname */
726 return (scm_makfrom0str (ans
));
731 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
733 "Returns a string containing the file name of the controlling terminal\n"
734 "for the current process.")
735 #define FUNC_NAME s_scm_ctermid
737 char *result
= ctermid (NULL
);
740 return scm_makfrom0str (result
);
743 #endif /* HAVE_CTERMID */
745 #ifdef HAVE_TCGETPGRP
746 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
748 "Returns the process group ID of the foreground\n"
749 "process group associated with the terminal open on the file descriptor\n"
750 "underlying @var{port}.\n\n"
751 "If there is no foreground process group, the return value is a\n"
752 "number greater than 1 that does not match the process group ID\n"
753 "of any existing process group. This can happen if all of the\n"
754 "processes in the job that was formerly the foreground job have\n"
755 "terminated, and no other job has yet been moved into the\n"
757 #define FUNC_NAME s_scm_tcgetpgrp
762 port
= SCM_COERCE_OUTPORT (port
);
764 SCM_VALIDATE_OPFPORT (1,port
);
765 fd
= SCM_FPORT_FDES (port
);
766 if ((pgid
= tcgetpgrp (fd
)) == -1)
768 return SCM_MAKINUM (pgid
);
771 #endif /* HAVE_TCGETPGRP */
773 #ifdef HAVE_TCSETPGRP
774 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
775 (SCM port
, SCM pgid
),
776 "Set the foreground process group ID for the terminal used by the file\n"
777 "descriptor underlying @var{port} to the integer @var{pgid}.\n"
778 "The calling process\n"
779 "must be a member of the same session as @var{pgid} and must have the same\n"
780 "controlling terminal. The return value is unspecified.")
781 #define FUNC_NAME s_scm_tcsetpgrp
785 port
= SCM_COERCE_OUTPORT (port
);
787 SCM_VALIDATE_OPFPORT (1,port
);
788 SCM_VALIDATE_INUM (2,pgid
);
789 fd
= SCM_FPORT_FDES (port
);
790 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
792 return SCM_UNSPECIFIED
;
795 #endif /* HAVE_TCSETPGRP */
797 /* Copy exec args from an SCM vector into a new C array. */
800 scm_convert_exec_args (SCM args
, int pos
, const char *subr
)
806 SCM_ASSERT (SCM_NULLP (args
)
807 || (SCM_CONSP (args
)),
809 num_args
= scm_ilength (args
);
811 scm_must_malloc ((num_args
+ 1) * sizeof (char *), subr
);
812 for (i
= 0; SCM_NNULLP (args
); args
= SCM_CDR (args
), ++i
)
817 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (args
)),
818 SCM_CAR (args
), SCM_ARGn
, subr
);
819 len
= 1 + SCM_ROLENGTH (SCM_CAR (args
));
820 dst
= (char *) scm_must_malloc ((long) len
, subr
);
821 src
= SCM_ROCHARS (SCM_CAR (args
));
830 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
831 (SCM filename
, SCM args
),
832 "Executes the file named by @var{path} as a new process image.\n"
833 "The remaining arguments are supplied to the process; from a C program\n"
834 "they are accessable as the @code{argv} argument to @code{main}.\n"
835 "Conventionally the first @var{arg} is the same as @var{path}.\n"
836 "All arguments must be strings. \n\n"
837 "If @var{arg} is missing, @var{path} is executed with a null\n"
838 "argument list, which may have system-dependent side-effects.\n\n"
839 "This procedure is currently implemented using the @code{execv} system\n"
840 "call, but we call it @code{execl} because of its Scheme calling interface.")
841 #define FUNC_NAME s_scm_execl
844 SCM_VALIDATE_ROSTRING (1,filename
);
845 SCM_COERCE_SUBSTR (filename
);
846 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
847 execv (SCM_ROCHARS (filename
), execargv
);
854 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
855 (SCM filename
, SCM args
),
856 "Similar to @code{execl}, however if\n"
857 "@var{filename} does not contain a slash\n"
858 "then the file to execute will be located by searching the\n"
859 "directories listed in the @code{PATH} environment variable.\n\n"
860 "This procedure is currently implemented using the @code{execlv} system\n"
861 "call, but we call it @code{execlp} because of its Scheme calling interface.")
862 #define FUNC_NAME s_scm_execlp
865 SCM_VALIDATE_ROSTRING (1,filename
);
866 SCM_COERCE_SUBSTR (filename
);
867 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
868 execvp (SCM_ROCHARS (filename
), execargv
);
876 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
882 SCM_ASSERT (SCM_NULLP (envlist
) || SCM_CONSP (envlist
),
884 num_strings
= scm_ilength (envlist
);
885 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
887 scm_memory_error (proc
);
888 while (SCM_NNULLP (envlist
))
893 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (envlist
)),
895 len
= 1 + SCM_ROLENGTH (SCM_CAR (envlist
));
896 result
[i
] = malloc ((long) len
);
897 if (result
[i
] == NULL
)
898 scm_memory_error (proc
);
899 src
= SCM_ROCHARS (SCM_CAR (envlist
));
901 result
[i
][len
] = src
[len
];
902 envlist
= SCM_CDR (envlist
);
909 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
910 (SCM filename
, SCM env
, SCM args
),
911 "Similar to @code{execl}, but the environment of the new process is\n"
912 "specified by @var{env}, which must be a list of strings as returned by the\n"
913 "@code{environ} procedure.\n\n"
914 "This procedure is currently implemented using the @code{execve} system\n"
915 "call, but we call it @code{execle} because of its Scheme calling interface.")
916 #define FUNC_NAME s_scm_execle
921 SCM_VALIDATE_ROSTRING (1,filename
);
922 SCM_COERCE_SUBSTR (filename
);
924 execargv
= scm_convert_exec_args (args
, SCM_ARG1
, FUNC_NAME
);
925 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
926 execve (SCM_ROCHARS (filename
), execargv
, exec_env
);
933 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
935 "Creates a new \"child\" process by duplicating the current \"parent\" process.\n"
936 "In the child the return value is 0. In the parent the return value is\n"
937 "the integer process ID of the child.\n\n"
938 "This procedure has been renamed from @code{fork} to avoid a naming conflict\n"
939 "with the scsh fork.")
940 #define FUNC_NAME s_scm_fork
946 return SCM_MAKINUM (0L+pid
);
951 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
953 "Returns an object with some information about the computer system the\n"
954 "program is running on.")
955 #define FUNC_NAME s_scm_uname
958 SCM ans
= scm_make_vector (SCM_MAKINUM(5), SCM_UNSPECIFIED
);
959 SCM
*ve
= SCM_VELTS (ans
);
960 if (uname (&buf
) < 0)
962 ve
[0] = scm_makfrom0str (buf
.sysname
);
963 ve
[1] = scm_makfrom0str (buf
.nodename
);
964 ve
[2] = scm_makfrom0str (buf
.release
);
965 ve
[3] = scm_makfrom0str (buf
.version
);
966 ve
[4] = scm_makfrom0str (buf
.machine
);
969 ve[5] = scm_makfrom0str (buf.domainname);
974 #endif /* HAVE_UNAME */
976 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
978 "If @var{env} is omitted, returns the current environment as a list of strings.\n"
979 "Otherwise it sets the current environment, which is also the\n"
980 "default environment for child processes, to the supplied list of strings.\n"
981 "Each member of @var{env} should be of the form\n"
982 "@code{NAME=VALUE} and values of @code{NAME} should not be duplicated.\n"
983 "If @var{env} is supplied then the return value is unspecified.")
984 #define FUNC_NAME s_scm_environ
986 if (SCM_UNBNDP (env
))
987 return scm_makfromstrs (-1, environ
);
992 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
993 /* Free the old environment, except when called for the first
998 static int first
= 1;
1001 for (ep
= environ
; *ep
!= NULL
; ep
++)
1003 free ((char *) environ
);
1007 environ
= new_environ
;
1008 return SCM_UNSPECIFIED
;
1015 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1017 "Create a new file in the file system with a unique name. The return\n"
1018 "value is the name of the new file. This function is implemented with\n"
1019 "the @code{tmpnam} function in the system libraries.")
1020 #define FUNC_NAME s_scm_tmpnam
1022 char name
[L_tmpnam
];
1023 SCM_SYSCALL (tmpnam (name
););
1024 return scm_makfrom0str (name
);
1030 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1031 (SCM pathname
, SCM actime
, SCM modtime
),
1032 "@code{utime} sets the access and modification times for\n"
1033 "the file named by @var{path}. If @var{actime} or @var{modtime}\n"
1034 "is not supplied, then the current time is used.\n"
1035 "@var{actime} and @var{modtime}\n"
1036 "must be integer time values as returned by the @code{current-time}\n"
1040 "(utime \"foo\" (- (current-time) 3600))\n"
1041 "@end smalllisp\n\n"
1042 "will set the access time to one hour in the past and the modification\n"
1043 "time to the current time.")
1044 #define FUNC_NAME s_scm_utime
1047 struct utimbuf utm_tmp
;
1049 SCM_VALIDATE_ROSTRING (1,pathname
);
1050 SCM_COERCE_SUBSTR (pathname
);
1051 if (SCM_UNBNDP (actime
))
1052 SCM_SYSCALL (time (&utm_tmp
.actime
));
1054 utm_tmp
.actime
= SCM_NUM2ULONG (2,actime
);
1056 if (SCM_UNBNDP (modtime
))
1057 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1059 utm_tmp
.modtime
= SCM_NUM2ULONG (3,modtime
);
1061 SCM_SYSCALL (rv
= utime (SCM_ROCHARS (pathname
), &utm_tmp
));
1064 return SCM_UNSPECIFIED
;
1068 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1069 (SCM path
, SCM how
),
1070 "Returns @code{#t} if @var{path} corresponds to an existing\n"
1071 "file and the current process\n"
1072 "has the type of access specified by @var{how}, otherwise \n"
1074 "@var{how} should be specified\n"
1075 "using the values of the variables listed below. Multiple values can\n"
1076 "be combined using a bitwise or, in which case @code{#t} will only\n"
1077 "be returned if all accesses are granted.\n\n"
1078 "Permissions are checked using the real id of the current process,\n"
1079 "not the effective id, although it's the effective id which determines\n"
1080 "whether the access would actually be granted.\n\n"
1082 "test for read permission.\n"
1085 "test for write permission.\n"
1088 "test for execute permission.\n"
1091 "test for existence of the file.\n"
1093 #define FUNC_NAME s_scm_access
1097 SCM_VALIDATE_ROSTRING (1,path
);
1098 if (SCM_SUBSTRP (path
))
1099 path
= scm_makfromstr (SCM_ROCHARS (path
), SCM_ROLENGTH (path
), 0);
1100 SCM_VALIDATE_INUM (2,how
);
1101 rv
= access (SCM_ROCHARS (path
), SCM_INUM (how
));
1102 return SCM_NEGATE_BOOL(rv
);
1106 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1108 "Returns an integer representing the current process ID.")
1109 #define FUNC_NAME s_scm_getpid
1111 return SCM_MAKINUM ((unsigned long) getpid ());
1115 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1117 "Modifies the environment of the current process, which is\n"
1118 "also the default environment inherited by child processes.\n\n"
1119 "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n"
1120 "directly into the environment, replacing any existing environment string\n"
1122 "name matching @code{NAME}. If @var{string} does not contain an equal\n"
1123 "sign, then any existing string with name matching @var{string} will\n"
1125 "The return value is unspecified.")
1126 #define FUNC_NAME s_scm_putenv
1131 SCM_VALIDATE_ROSTRING (1,str
);
1132 /* must make a new copy to be left in the environment, safe from gc. */
1133 ptr
= malloc (SCM_LENGTH (str
) + 1);
1136 strncpy (ptr
, SCM_ROCHARS (str
), SCM_LENGTH (str
));
1137 ptr
[SCM_LENGTH(str
)] = 0;
1141 return SCM_UNSPECIFIED
;
1145 #ifdef HAVE_SETLOCALE
1146 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1147 (SCM category
, SCM locale
),
1148 "If @var{locale} is omitted, returns the current value of the specified\n"
1149 "locale category \n"
1150 "as a system-dependent string.\n"
1151 "@var{category} should be specified using the values @code{LC_COLLATE},\n"
1152 "@code{LC_ALL} etc.\n\n"
1153 "Otherwise the specified locale category is set to\n"
1154 "the string @var{locale}\n"
1155 "and the new value is returned as a system-dependent string. If @var{locale}\n"
1156 "is an empty string, the locale will be set using envirionment variables.")
1157 #define FUNC_NAME s_scm_setlocale
1162 SCM_VALIDATE_INUM (1,category
);
1163 if (SCM_UNBNDP (locale
))
1169 SCM_VALIDATE_ROSTRING (2,locale
);
1170 SCM_COERCE_SUBSTR (locale
);
1171 clocale
= SCM_ROCHARS (locale
);
1174 rv
= setlocale (SCM_INUM (category
), clocale
);
1177 return scm_makfrom0str (rv
);
1180 #endif /* HAVE_SETLOCALE */
1183 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1184 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1185 "Creates a new special file, such as a file corresponding to a device.\n"
1186 "@var{path} specifies the name of the file. @var{type} should\n"
1187 "be one of the following symbols:\n"
1188 "regular, directory, symlink, block-special, char-special,\n"
1189 "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n"
1190 "@var{dev} (an integer) specifies which device the special file refers\n"
1191 "to. Its exact interpretation depends on the kind of special file\n"
1192 "being created.\n\n"
1195 "(mknod "/dev
/fd0
" 'block-special #o660 (+ (* 2 256) 2))
1198 The return value is unspecified.")
1199 #define FUNC_NAME s_scm_mknod
1205 SCM_VALIDATE_ROSTRING (1,path
);
1206 SCM_VALIDATE_SYMBOL (2,type
);
1207 SCM_VALIDATE_INUM (3,perms
);
1208 SCM_VALIDATE_INUM (4,dev
);
1209 SCM_COERCE_SUBSTR (path
);
1211 p
= SCM_CHARS (type
);
1212 if (strcmp (p
, "regular") == 0)
1214 else if (strcmp (p
, "directory") == 0)
1216 else if (strcmp (p
, "symlink") == 0)
1218 else if (strcmp (p
, "block-special") == 0)
1220 else if (strcmp (p
, "char-special") == 0)
1222 else if (strcmp (p
, "fifo") == 0)
1224 else if (strcmp (p
, "socket") == 0)
1227 SCM_OUT_OF_RANGE (2,type
);
1229 SCM_SYSCALL (val
= mknod(SCM_ROCHARS(path
), ctype
| SCM_INUM (perms
),
1233 return SCM_UNSPECIFIED
;
1236 #endif /* HAVE_MKNOD */
1239 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1241 "Increment the priority of the current process by @var{incr}. A higher\n"
1242 "priority value means that the process runs less often.\n"
1243 "The return value is unspecified.")
1244 #define FUNC_NAME s_scm_nice
1246 SCM_VALIDATE_INUM (1,incr
);
1247 if (nice(SCM_INUM(incr
)) != 0)
1249 return SCM_UNSPECIFIED
;
1252 #endif /* HAVE_NICE */
1255 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1257 "Flush the operating system disk buffers.\n"
1258 "The return value is unspecified.")
1259 #define FUNC_NAME s_scm_sync
1262 return SCM_UNSPECIFIED
;
1265 #endif /* HAVE_SYNC */
1270 scm_add_feature ("posix");
1272 scm_add_feature ("EIDs");
1275 scm_sysintern ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1278 scm_sysintern ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1281 scm_sysintern ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1284 scm_sysintern ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1287 /* access() symbols. */
1288 scm_sysintern ("R_OK", SCM_MAKINUM (R_OK
));
1289 scm_sysintern ("W_OK", SCM_MAKINUM (W_OK
));
1290 scm_sysintern ("X_OK", SCM_MAKINUM (X_OK
));
1291 scm_sysintern ("F_OK", SCM_MAKINUM (F_OK
));
1294 scm_sysintern ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1297 scm_sysintern ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1300 scm_sysintern ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1303 scm_sysintern ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1306 scm_sysintern ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1309 scm_sysintern ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1312 scm_sysintern ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1314 #include "cpp_sig_symbols.c"