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 */
61 #ifdef TIME_WITH_SYS_TIME
62 # include <sys/time.h>
66 # include <sys/time.h>
76 extern char *ttyname();
80 #ifdef LIBC_H_WITH_UNISTD_H
84 #include <sys/types.h>
91 # include <sys/wait.h>
94 # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
97 # define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
102 extern FILE *popen ();
103 extern char ** environ
;
106 #include <sys/utsname.h>
110 # define NAMLEN(dirent) strlen((dirent)->d_name)
112 # define dirent direct
113 # define NAMLEN(dirent) (dirent)->d_namlen
115 # include <sys/ndir.h>
118 # include <sys/dir.h>
125 #ifdef HAVE_SETLOCALE
129 /* Some Unix systems don't define these. CPP hair is dangerous, but
130 this seems safe enough... */
147 /* On NextStep, <utime.h> doesn't define struct utime, unless we
148 #define _POSIX_SOURCE before #including it. I think this is less
149 of a kludge than defining struct utimbuf ourselves. */
150 #ifdef UTIMBUF_NEEDS_POSIX
151 #define _POSIX_SOURCE
154 #ifdef HAVE_SYS_UTIME_H
155 #include <sys/utime.h>
162 /* Please don't add any more #includes or #defines here. The hack
163 above means that _POSIX_SOURCE may be #defined, which will
164 encourage header files to do strange things. */
167 SCM_SYMBOL (sym_read_pipe
, "read pipe");
168 SCM_SYMBOL (sym_write_pipe
, "write pipe");
170 SCM_DEFINE (scm_pipe
, "pipe", 0, 0, 0,
172 "Returns a newly created pipe: a pair of ports which are linked\n"
173 "together on the local machine. The CAR is the input port and\n"
174 "the CDR is the output port. Data written (and flushed) to the\n"
175 "output port can be read from the input port.\n"
176 "Pipes are commonly used for communication with a newly\n"
177 "forked child process. The need to flush the output port\n"
178 "can be avoided by making it unbuffered using @code{setvbuf}.\n\n"
179 "Writes occur atomically provided the size of the data in\n"
180 "bytes is not greater than the value of @code{PIPE_BUF}\n"
181 "Note that the output port is likely to block if too much data\n"
182 "(typically equal to @code{PIPE_BUF}) has been written but not\n"
183 "yet read from the input port\n"
185 #define FUNC_NAME s_scm_pipe
194 p_rd
= scm_fdes_to_port (fd
[0], "r", sym_read_pipe
);
195 p_wt
= scm_fdes_to_port (fd
[1], "w", sym_write_pipe
);
196 return scm_cons (p_rd
, p_wt
);
201 #ifdef HAVE_GETGROUPS
202 SCM_DEFINE (scm_getgroups
, "getgroups", 0, 0, 0,
204 "Returns a vector of integers representing the current supplimentary group IDs.")
205 #define FUNC_NAME s_scm_getgroups
208 int ngroups
= getgroups (0, NULL
);
217 groups
= SCM_MUST_MALLOC_TYPE_NUM(GETGROUPS_T
,ngroups
);
218 val
= getgroups(ngroups
, groups
);
222 scm_must_free((char *)groups
);
226 SCM_SETCHARS(grps
, groups
); /* set up grps as a GC protect */
227 SCM_SETLENGTH(grps
, 0L + ngroups
* sizeof(GETGROUPS_T
), scm_tc7_string
);
228 ans
= scm_make_vector (SCM_MAKINUM(ngroups
), SCM_UNDEFINED
);
229 while (--ngroups
>= 0) SCM_VELTS(ans
)[ngroups
] = SCM_MAKINUM(groups
[ngroups
]);
230 SCM_SETCHARS(grps
, groups
); /* to make sure grps stays around. */
239 SCM_DEFINE (scm_getpwuid
, "getpw", 0, 1, 0,
241 "Look up an entry in the user database. @var{obj} can be an integer,\n"
242 "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n"
243 "or getpwent respectively.")
244 #define FUNC_NAME s_scm_getpwuid
247 struct passwd
*entry
;
250 result
= scm_make_vector (SCM_MAKINUM (7), SCM_UNSPECIFIED
);
251 ve
= SCM_VELTS (result
);
252 if (SCM_UNBNDP (user
) || SCM_FALSEP (user
))
254 SCM_SYSCALL (entry
= getpwent ());
260 else if (SCM_INUMP (user
))
262 entry
= getpwuid (SCM_INUM (user
));
266 SCM_VALIDATE_ROSTRING (1,user
);
267 if (SCM_SUBSTRP (user
))
268 user
= scm_makfromstr (SCM_ROCHARS (user
), SCM_ROLENGTH (user
), 0);
269 entry
= getpwnam (SCM_ROCHARS (user
));
272 SCM_MISC_ERROR ("entry not found", SCM_EOL
);
274 ve
[0] = scm_makfrom0str (entry
->pw_name
);
275 ve
[1] = scm_makfrom0str (entry
->pw_passwd
);
276 ve
[2] = scm_ulong2num ((unsigned long) entry
->pw_uid
);
277 ve
[3] = scm_ulong2num ((unsigned long) entry
->pw_gid
);
278 ve
[4] = scm_makfrom0str (entry
->pw_gecos
);
280 ve
[5] = scm_makfrom0str ("");
282 ve
[5] = scm_makfrom0str (entry
->pw_dir
);
283 if (!entry
->pw_shell
)
284 ve
[6] = scm_makfrom0str ("");
286 ve
[6] = scm_makfrom0str (entry
->pw_shell
);
293 SCM_DEFINE (scm_setpwent
, "setpw", 0, 1, 0,
295 "If called with a true argument, initialize or reset the password data\n"
296 "stream. Otherwise, close the stream. The @code{setpwent} and\n"
297 "@code{endpwent} procedures are implemented on top of this.")
298 #define FUNC_NAME s_scm_setpwent
300 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
304 return SCM_UNSPECIFIED
;
311 /* Combines getgrgid and getgrnam. */
312 SCM_DEFINE (scm_getgrgid
, "getgr", 0, 1, 0,
314 "Look up an entry in the group database. @var{obj} can be an integer,\n"
315 "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n"
316 "or getgrent respectively.")
317 #define FUNC_NAME s_scm_getgrgid
322 result
= scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED
);
323 ve
= SCM_VELTS (result
);
324 if (SCM_UNBNDP (name
) || (name
== SCM_BOOL_F
))
326 SCM_SYSCALL (entry
= getgrent ());
332 else if (SCM_INUMP (name
))
333 SCM_SYSCALL (entry
= getgrgid (SCM_INUM (name
)));
336 SCM_VALIDATE_ROSTRING (1,name
);
337 SCM_COERCE_SUBSTR (name
);
338 SCM_SYSCALL (entry
= getgrnam (SCM_ROCHARS (name
)));
343 ve
[0] = scm_makfrom0str (entry
->gr_name
);
344 ve
[1] = scm_makfrom0str (entry
->gr_passwd
);
345 ve
[2] = scm_ulong2num ((unsigned long) entry
->gr_gid
);
346 ve
[3] = scm_makfromstrs (-1, entry
->gr_mem
);
353 SCM_DEFINE (scm_setgrent
, "setgr", 0, 1, 0,
355 "If called with a true argument, initialize or reset the group data\n"
356 "stream. Otherwise, close the stream. The @code{setgrent} and\n"
357 "@code{endgrent} procedures are implemented on top of this.")
358 #define FUNC_NAME s_scm_setgrent
360 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
364 return SCM_UNSPECIFIED
;
370 SCM_DEFINE (scm_kill
, "kill", 2, 0, 0,
372 "Sends a signal to the specified process or group of processes.\n\n"
373 "@var{pid} specifies the processes to which the signal is sent:\n\n"
375 "@item @var{pid} greater than 0\n"
376 "The process whose identifier is @var{pid}.\n"
377 "@item @var{pid} equal to 0\n"
378 "All processes in the current process group.\n"
379 "@item @var{pid} less than -1\n"
380 "The process group whose identifier is -@var{pid}\n"
381 "@item @var{pid} equal to -1\n"
382 "If the process is privileged, all processes except for some special\n"
383 "system processes. Otherwise, all processes with the current effective\n"
386 "@var{sig} should be specified using a variable corresponding to\n"
387 "the Unix symbolic name, e.g.,\n\n"
392 "Interrupt signal.\n"
394 #define FUNC_NAME s_scm_kill
396 SCM_VALIDATE_INUM (1,pid
);
397 SCM_VALIDATE_INUM (2,sig
);
398 /* Signal values are interned in scm_init_posix(). */
399 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
401 return SCM_UNSPECIFIED
;
406 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
407 (SCM pid
, SCM options
),
408 "This procedure collects status information from a child process which\n"
409 "has terminated or (optionally) stopped. Normally it will\n"
410 "suspend the calling process until this can be done. If more than one\n"
411 "child process is eligible then one will be chosen by the operating system.\n\n"
412 "The value of @var{pid} determines the behaviour:\n\n"
414 "@item @var{pid} greater than 0\n"
415 "Request status information from the specified child process.\n"
416 "@item @var{pid} equal to -1 or WAIT_ANY\n"
417 "Request status information for any child process.\n"
418 "@item @var{pid} equal to 0 or WAIT_MYPGRP\n"
419 "Request status information for any child process in the current process\n"
421 "@item @var{pid} less than -1\n"
422 "Request status information for any child process whose process group ID\n"
425 "The @var{options} argument, if supplied, should be the bitwise OR of the\n"
426 "values of zero or more of the following variables:\n\n"
428 "Return immediately even if there are no child processes to be collected.\n"
430 "@defvar WUNTRACED\n"
431 "Report status information for stopped processes as well as terminated\n"
434 "The return value is a pair containing:\n\n"
437 "The process ID of the child process, or 0 if @code{WNOHANG} was\n"
438 "specified and no process was collected.\n"
440 "The integer status value.\n"
442 #define FUNC_NAME s_scm_waitpid
447 SCM_VALIDATE_INUM (1,pid
);
448 if (SCM_UNBNDP (options
))
452 SCM_VALIDATE_INUM (2,options
);
453 /* Flags are interned in scm_init_posix. */
454 ioptions
= SCM_INUM (options
);
456 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
459 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
462 #endif /* HAVE_WAITPID */
464 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
466 "Returns the exit status value, as would be\n"
467 "set if a process ended normally through a\n"
468 "call to @code{exit} or @code{_exit}, if any, otherwise @code{#f}.")
469 #define FUNC_NAME s_scm_status_exit_val
473 SCM_VALIDATE_INUM (1,status
);
475 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
476 go figure. SCM_INUM does not yield an lvalue. */
477 lstatus
= SCM_INUM (status
);
478 if (WIFEXITED (lstatus
))
479 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
485 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
487 "Returns the signal number which terminated the\n"
488 "process, if any, otherwise @code{#f}.")
489 #define FUNC_NAME s_scm_status_term_sig
493 SCM_VALIDATE_INUM (1,status
);
495 lstatus
= SCM_INUM (status
);
496 if (WIFSIGNALED (lstatus
))
497 return SCM_MAKINUM (WTERMSIG (lstatus
));
503 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
505 "Returns the signal number which stopped the\n"
506 "process, if any, otherwise @code{#f}.")
507 #define FUNC_NAME s_scm_status_stop_sig
511 SCM_VALIDATE_INUM (1,status
);
513 lstatus
= SCM_INUM (status
);
514 if (WIFSTOPPED (lstatus
))
515 return SCM_MAKINUM (WSTOPSIG (lstatus
));
521 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
523 "Returns an integer representing the process ID of the parent process.")
524 #define FUNC_NAME s_scm_getppid
526 return SCM_MAKINUM (0L + getppid ());
532 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
534 "Returns an integer representing the current real user ID.")
535 #define FUNC_NAME s_scm_getuid
537 return SCM_MAKINUM (0L + getuid ());
543 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
545 "Returns an integer representing the current real group ID.")
546 #define FUNC_NAME s_scm_getgid
548 return SCM_MAKINUM (0L + getgid ());
554 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
556 "Returns an integer representing the current effective user ID.\n"
557 "If the system does not support effective IDs, then the real ID\n"
558 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
559 "supports effective IDs.")
560 #define FUNC_NAME s_scm_geteuid
563 return SCM_MAKINUM (0L + geteuid ());
565 return SCM_MAKINUM (0L + getuid ());
572 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
574 "Returns an integer representing the current effective group ID.\n"
575 "If the system does not support effective IDs, then the real ID\n"
576 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
577 "supports effective IDs.")
578 #define FUNC_NAME s_scm_getegid
581 return SCM_MAKINUM (0L + getegid ());
583 return SCM_MAKINUM (0L + getgid ());
589 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
591 "Sets both the real and effective user IDs to the integer @var{id}, provided\n"
592 "the process has appropriate privileges.\n"
593 "The return value is unspecified.")
594 #define FUNC_NAME s_scm_setuid
596 SCM_VALIDATE_INUM (1,id
);
597 if (setuid (SCM_INUM (id
)) != 0)
599 return SCM_UNSPECIFIED
;
603 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
605 "Sets both the real and effective group IDs to the integer @var{id}, provided\n"
606 "the process has appropriate privileges.\n"
607 "The return value is unspecified.")
608 #define FUNC_NAME s_scm_setgid
610 SCM_VALIDATE_INUM (1,id
);
611 if (setgid (SCM_INUM (id
)) != 0)
613 return SCM_UNSPECIFIED
;
617 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
619 "Sets the effective user ID to the integer @var{id}, provided the process\n"
620 "has appropriate privileges. If effective IDs are not supported, the\n"
621 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
622 "system supports effective IDs.\n"
623 "The return value is unspecified.")
624 #define FUNC_NAME s_scm_seteuid
628 SCM_VALIDATE_INUM (1,id
);
630 rv
= seteuid (SCM_INUM (id
));
632 rv
= setuid (SCM_INUM (id
));
636 return SCM_UNSPECIFIED
;
641 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
643 "Sets the effective group ID to the integer @var{id}, provided the process\n"
644 "has appropriate privileges. If effective IDs are not supported, the\n"
645 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
646 "system supports effective IDs.\n"
647 "The return value is unspecified.")
648 #define FUNC_NAME s_scm_setegid
652 SCM_VALIDATE_INUM (1,id
);
654 rv
= setegid (SCM_INUM (id
));
656 rv
= setgid (SCM_INUM (id
));
660 return SCM_UNSPECIFIED
;
666 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
668 "Returns an integer representing the current process group ID.\n"
669 "This is the POSIX definition, not BSD.")
670 #define FUNC_NAME s_scm_getpgrp
673 fn
= (int (*) ()) getpgrp
;
674 return SCM_MAKINUM (fn (0));
679 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
681 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n"
682 "@var{pgid} must be integers: they can be zero to indicate the ID of the\n"
684 "Fails on systems that do not support job control.\n"
685 "The return value is unspecified.")
686 #define FUNC_NAME s_scm_setpgid
688 SCM_VALIDATE_INUM (1,pid
);
689 SCM_VALIDATE_INUM (2,pgid
);
690 /* FIXME(?): may be known as setpgrp. */
691 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
693 return SCM_UNSPECIFIED
;
696 #endif /* HAVE_SETPGID */
699 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
701 "Creates a new session. The current process becomes the session leader\n"
702 "and is put in a new process group. The process will be detached\n"
703 "from its controlling terminal if it has one.\n"
704 "The return value is an integer representing the new process group ID.")
705 #define FUNC_NAME s_scm_setsid
707 pid_t sid
= setsid ();
710 return SCM_UNSPECIFIED
;
713 #endif /* HAVE_SETSID */
715 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
717 "Returns a string with the name of the serial terminal device underlying\n"
719 #define FUNC_NAME s_scm_ttyname
724 port
= SCM_COERCE_OUTPORT (port
);
725 SCM_VALIDATE_OPPORT (1,port
);
726 if (scm_tc16_fport
!= SCM_TYP16 (port
))
728 fd
= SCM_FPORT_FDES (port
);
729 SCM_SYSCALL (ans
= ttyname (fd
));
732 /* ans could be overwritten by another call to ttyname */
733 return (scm_makfrom0str (ans
));
738 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
740 "Returns a string containing the file name of the controlling terminal\n"
741 "for the current process.")
742 #define FUNC_NAME s_scm_ctermid
744 char *result
= ctermid (NULL
);
747 return scm_makfrom0str (result
);
750 #endif /* HAVE_CTERMID */
752 #ifdef HAVE_TCGETPGRP
753 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
755 "Returns the process group ID of the foreground\n"
756 "process group associated with the terminal open on the file descriptor\n"
757 "underlying @var{port}.\n\n"
758 "If there is no foreground process group, the return value is a\n"
759 "number greater than 1 that does not match the process group ID\n"
760 "of any existing process group. This can happen if all of the\n"
761 "processes in the job that was formerly the foreground job have\n"
762 "terminated, and no other job has yet been moved into the\n"
764 #define FUNC_NAME s_scm_tcgetpgrp
769 port
= SCM_COERCE_OUTPORT (port
);
771 SCM_VALIDATE_OPFPORT (1,port
);
772 fd
= SCM_FPORT_FDES (port
);
773 if ((pgid
= tcgetpgrp (fd
)) == -1)
775 return SCM_MAKINUM (pgid
);
778 #endif /* HAVE_TCGETPGRP */
780 #ifdef HAVE_TCSETPGRP
781 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
782 (SCM port
, SCM pgid
),
783 "Set the foreground process group ID for the terminal used by the file\n"
784 "descriptor underlying @var{port} to the integer @var{pgid}.\n"
785 "The calling process\n"
786 "must be a member of the same session as @var{pgid} and must have the same\n"
787 "controlling terminal. The return value is unspecified.")
788 #define FUNC_NAME s_scm_tcsetpgrp
792 port
= SCM_COERCE_OUTPORT (port
);
794 SCM_VALIDATE_OPFPORT (1,port
);
795 SCM_VALIDATE_INUM (2,pgid
);
796 fd
= SCM_FPORT_FDES (port
);
797 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
799 return SCM_UNSPECIFIED
;
802 #endif /* HAVE_TCSETPGRP */
804 /* Copy exec args from an SCM vector into a new C array. */
807 scm_convert_exec_args (SCM args
, int pos
, const char *subr
)
813 SCM_ASSERT (SCM_NULLP (args
)
814 || (SCM_CONSP (args
)),
816 num_args
= scm_ilength (args
);
818 scm_must_malloc ((num_args
+ 1) * sizeof (char *), subr
);
819 for (i
= 0; SCM_NNULLP (args
); args
= SCM_CDR (args
), ++i
)
824 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (args
)),
825 SCM_CAR (args
), SCM_ARGn
, subr
);
826 len
= 1 + SCM_ROLENGTH (SCM_CAR (args
));
827 dst
= (char *) scm_must_malloc ((long) len
, subr
);
828 src
= SCM_ROCHARS (SCM_CAR (args
));
837 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
838 (SCM filename
, SCM args
),
839 "Executes the file named by @var{path} as a new process image.\n"
840 "The remaining arguments are supplied to the process; from a C program\n"
841 "they are accessable as the @code{argv} argument to @code{main}.\n"
842 "Conventionally the first @var{arg} is the same as @var{path}.\n"
843 "All arguments must be strings. \n\n"
844 "If @var{arg} is missing, @var{path} is executed with a null\n"
845 "argument list, which may have system-dependent side-effects.\n\n"
846 "This procedure is currently implemented using the @code{execv} system\n"
847 "call, but we call it @code{execl} because of its Scheme calling interface.")
848 #define FUNC_NAME s_scm_execl
851 SCM_VALIDATE_ROSTRING (1,filename
);
852 SCM_COERCE_SUBSTR (filename
);
853 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
854 execv (SCM_ROCHARS (filename
), execargv
);
861 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
862 (SCM filename
, SCM args
),
863 "Similar to @code{execl}, however if\n"
864 "@var{filename} does not contain a slash\n"
865 "then the file to execute will be located by searching the\n"
866 "directories listed in the @code{PATH} environment variable.\n\n"
867 "This procedure is currently implemented using the @code{execlv} system\n"
868 "call, but we call it @code{execlp} because of its Scheme calling interface.")
869 #define FUNC_NAME s_scm_execlp
872 SCM_VALIDATE_ROSTRING (1,filename
);
873 SCM_COERCE_SUBSTR (filename
);
874 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
875 execvp (SCM_ROCHARS (filename
), execargv
);
883 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
889 SCM_ASSERT (SCM_NULLP (envlist
) || SCM_CONSP (envlist
),
891 num_strings
= scm_ilength (envlist
);
892 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
894 scm_memory_error (proc
);
895 while (SCM_NNULLP (envlist
))
900 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (envlist
)),
902 len
= 1 + SCM_ROLENGTH (SCM_CAR (envlist
));
903 result
[i
] = malloc ((long) len
);
904 if (result
[i
] == NULL
)
905 scm_memory_error (proc
);
906 src
= SCM_ROCHARS (SCM_CAR (envlist
));
908 result
[i
][len
] = src
[len
];
909 envlist
= SCM_CDR (envlist
);
916 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
917 (SCM filename
, SCM env
, SCM args
),
918 "Similar to @code{execl}, but the environment of the new process is\n"
919 "specified by @var{env}, which must be a list of strings as returned by the\n"
920 "@code{environ} procedure.\n\n"
921 "This procedure is currently implemented using the @code{execve} system\n"
922 "call, but we call it @code{execle} because of its Scheme calling interface.")
923 #define FUNC_NAME s_scm_execle
928 SCM_VALIDATE_ROSTRING (1,filename
);
929 SCM_COERCE_SUBSTR (filename
);
931 execargv
= scm_convert_exec_args (args
, SCM_ARG1
, FUNC_NAME
);
932 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
933 execve (SCM_ROCHARS (filename
), execargv
, exec_env
);
940 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
942 "Creates a new \"child\" process by duplicating the current \"parent\" process.\n"
943 "In the child the return value is 0. In the parent the return value is\n"
944 "the integer process ID of the child.\n\n"
945 "This procedure has been renamed from @code{fork} to avoid a naming conflict\n"
946 "with the scsh fork.")
947 #define FUNC_NAME s_scm_fork
953 return SCM_MAKINUM (0L+pid
);
958 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
960 "Returns an object with some information about the computer system the\n"
961 "program is running on.")
962 #define FUNC_NAME s_scm_uname
965 SCM ans
= scm_make_vector (SCM_MAKINUM(5), SCM_UNSPECIFIED
);
966 SCM
*ve
= SCM_VELTS (ans
);
967 if (uname (&buf
) < 0)
969 ve
[0] = scm_makfrom0str (buf
.sysname
);
970 ve
[1] = scm_makfrom0str (buf
.nodename
);
971 ve
[2] = scm_makfrom0str (buf
.release
);
972 ve
[3] = scm_makfrom0str (buf
.version
);
973 ve
[4] = scm_makfrom0str (buf
.machine
);
976 ve[5] = scm_makfrom0str (buf.domainname);
981 #endif /* HAVE_UNAME */
983 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
985 "If @var{env} is omitted, returns the current environment as a list of strings.\n"
986 "Otherwise it sets the current environment, which is also the\n"
987 "default environment for child processes, to the supplied list of strings.\n"
988 "Each member of @var{env} should be of the form\n"
989 "@code{NAME=VALUE} and values of @code{NAME} should not be duplicated.\n"
990 "If @var{env} is supplied then the return value is unspecified.")
991 #define FUNC_NAME s_scm_environ
993 if (SCM_UNBNDP (env
))
994 return scm_makfromstrs (-1, environ
);
999 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
1000 /* Free the old environment, except when called for the first
1005 static int first
= 1;
1008 for (ep
= environ
; *ep
!= NULL
; ep
++)
1010 free ((char *) environ
);
1014 environ
= new_environ
;
1015 return SCM_UNSPECIFIED
;
1022 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1024 "Create a new file in the file system with a unique name. The return\n"
1025 "value is the name of the new file. This function is implemented with\n"
1026 "the @code{tmpnam} function in the system libraries.")
1027 #define FUNC_NAME s_scm_tmpnam
1029 char name
[L_tmpnam
];
1030 SCM_SYSCALL (tmpnam (name
););
1031 return scm_makfrom0str (name
);
1037 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1038 (SCM pathname
, SCM actime
, SCM modtime
),
1039 "@code{utime} sets the access and modification times for\n"
1040 "the file named by @var{path}. If @var{actime} or @var{modtime}\n"
1041 "is not supplied, then the current time is used.\n"
1042 "@var{actime} and @var{modtime}\n"
1043 "must be integer time values as returned by the @code{current-time}\n"
1047 "(utime \"foo\" (- (current-time) 3600))\n"
1048 "@end smalllisp\n\n"
1049 "will set the access time to one hour in the past and the modification\n"
1050 "time to the current time.")
1051 #define FUNC_NAME s_scm_utime
1054 struct utimbuf utm_tmp
;
1056 SCM_VALIDATE_ROSTRING (1,pathname
);
1057 SCM_COERCE_SUBSTR (pathname
);
1058 if (SCM_UNBNDP (actime
))
1059 SCM_SYSCALL (time (&utm_tmp
.actime
));
1061 utm_tmp
.actime
= SCM_NUM2ULONG (2,actime
);
1063 if (SCM_UNBNDP (modtime
))
1064 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1066 utm_tmp
.modtime
= SCM_NUM2ULONG (3,modtime
);
1068 SCM_SYSCALL (rv
= utime (SCM_ROCHARS (pathname
), &utm_tmp
));
1071 return SCM_UNSPECIFIED
;
1075 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1076 (SCM path
, SCM how
),
1077 "Returns @code{#t} if @var{path} corresponds to an existing\n"
1078 "file and the current process\n"
1079 "has the type of access specified by @var{how}, otherwise \n"
1081 "@var{how} should be specified\n"
1082 "using the values of the variables listed below. Multiple values can\n"
1083 "be combined using a bitwise or, in which case @code{#t} will only\n"
1084 "be returned if all accesses are granted.\n\n"
1085 "Permissions are checked using the real id of the current process,\n"
1086 "not the effective id, although it's the effective id which determines\n"
1087 "whether the access would actually be granted.\n\n"
1089 "test for read permission.\n"
1092 "test for write permission.\n"
1095 "test for execute permission.\n"
1098 "test for existence of the file.\n"
1100 #define FUNC_NAME s_scm_access
1104 SCM_VALIDATE_ROSTRING (1,path
);
1105 if (SCM_SUBSTRP (path
))
1106 path
= scm_makfromstr (SCM_ROCHARS (path
), SCM_ROLENGTH (path
), 0);
1107 SCM_VALIDATE_INUM (2,how
);
1108 rv
= access (SCM_ROCHARS (path
), SCM_INUM (how
));
1109 return SCM_NEGATE_BOOL(rv
);
1113 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1115 "Returns an integer representing the current process ID.")
1116 #define FUNC_NAME s_scm_getpid
1118 return SCM_MAKINUM ((unsigned long) getpid ());
1122 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1124 "Modifies the environment of the current process, which is\n"
1125 "also the default environment inherited by child processes.\n\n"
1126 "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n"
1127 "directly into the environment, replacing any existing environment string\n"
1129 "name matching @code{NAME}. If @var{string} does not contain an equal\n"
1130 "sign, then any existing string with name matching @var{string} will\n"
1132 "The return value is unspecified.")
1133 #define FUNC_NAME s_scm_putenv
1138 SCM_VALIDATE_ROSTRING (1,str
);
1139 /* must make a new copy to be left in the environment, safe from gc. */
1140 ptr
= malloc (SCM_LENGTH (str
) + 1);
1143 strncpy (ptr
, SCM_ROCHARS (str
), SCM_LENGTH (str
));
1144 ptr
[SCM_LENGTH(str
)] = 0;
1148 return SCM_UNSPECIFIED
;
1152 #ifdef HAVE_SETLOCALE
1153 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1154 (SCM category
, SCM locale
),
1155 "If @var{locale} is omitted, returns the current value of the specified\n"
1156 "locale category \n"
1157 "as a system-dependent string.\n"
1158 "@var{category} should be specified using the values @code{LC_COLLATE},\n"
1159 "@code{LC_ALL} etc.\n\n"
1160 "Otherwise the specified locale category is set to\n"
1161 "the string @var{locale}\n"
1162 "and the new value is returned as a system-dependent string. If @var{locale}\n"
1163 "is an empty string, the locale will be set using envirionment variables.")
1164 #define FUNC_NAME s_scm_setlocale
1169 SCM_VALIDATE_INUM (1,category
);
1170 if (SCM_UNBNDP (locale
))
1176 SCM_VALIDATE_ROSTRING (2,locale
);
1177 SCM_COERCE_SUBSTR (locale
);
1178 clocale
= SCM_ROCHARS (locale
);
1181 rv
= setlocale (SCM_INUM (category
), clocale
);
1184 return scm_makfrom0str (rv
);
1187 #endif /* HAVE_SETLOCALE */
1190 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1191 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1192 "Creates a new special file, such as a file corresponding to a device.\n"
1193 "@var{path} specifies the name of the file. @var{type} should\n"
1194 "be one of the following symbols:\n"
1195 "regular, directory, symlink, block-special, char-special,\n"
1196 "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n"
1197 "@var{dev} (an integer) specifies which device the special file refers\n"
1198 "to. Its exact interpretation depends on the kind of special file\n"
1199 "being created.\n\n"
1202 "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))"
1204 "The return value is unspecified.")
1205 #define FUNC_NAME s_scm_mknod
1211 SCM_VALIDATE_ROSTRING (1,path
);
1212 SCM_VALIDATE_SYMBOL (2,type
);
1213 SCM_VALIDATE_INUM (3,perms
);
1214 SCM_VALIDATE_INUM (4,dev
);
1215 SCM_COERCE_SUBSTR (path
);
1217 p
= SCM_CHARS (type
);
1218 if (strcmp (p
, "regular") == 0)
1220 else if (strcmp (p
, "directory") == 0)
1222 else if (strcmp (p
, "symlink") == 0)
1224 else if (strcmp (p
, "block-special") == 0)
1226 else if (strcmp (p
, "char-special") == 0)
1228 else if (strcmp (p
, "fifo") == 0)
1230 else if (strcmp (p
, "socket") == 0)
1233 SCM_OUT_OF_RANGE (2,type
);
1235 SCM_SYSCALL (val
= mknod(SCM_ROCHARS(path
), ctype
| SCM_INUM (perms
),
1239 return SCM_UNSPECIFIED
;
1242 #endif /* HAVE_MKNOD */
1245 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1247 "Increment the priority of the current process by @var{incr}. A higher\n"
1248 "priority value means that the process runs less often.\n"
1249 "The return value is unspecified.")
1250 #define FUNC_NAME s_scm_nice
1252 SCM_VALIDATE_INUM (1,incr
);
1253 if (nice(SCM_INUM(incr
)) != 0)
1255 return SCM_UNSPECIFIED
;
1258 #endif /* HAVE_NICE */
1261 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1263 "Flush the operating system disk buffers.\n"
1264 "The return value is unspecified.")
1265 #define FUNC_NAME s_scm_sync
1268 return SCM_UNSPECIFIED
;
1271 #endif /* HAVE_SYNC */
1276 scm_add_feature ("posix");
1278 scm_add_feature ("EIDs");
1281 scm_sysintern ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1284 scm_sysintern ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1287 scm_sysintern ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1290 scm_sysintern ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1293 /* access() symbols. */
1294 scm_sysintern ("R_OK", SCM_MAKINUM (R_OK
));
1295 scm_sysintern ("W_OK", SCM_MAKINUM (W_OK
));
1296 scm_sysintern ("X_OK", SCM_MAKINUM (X_OK
));
1297 scm_sysintern ("F_OK", SCM_MAKINUM (F_OK
));
1300 scm_sysintern ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1303 scm_sysintern ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1306 scm_sysintern ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1309 scm_sysintern ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1312 scm_sysintern ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1315 scm_sysintern ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1318 scm_sysintern ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1321 scm_sysintern ("PIPE_BUF", scm_long2num (PIPE_BUF
));
1324 #include "cpp_sig_symbols.c"