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 */
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 "Returns a newly created pipe: a pair of ports which are linked\n"
172 "together on the local machine. The CAR is the input port and\n"
173 "the CDR is the output port. Data written (and flushed) to the\n"
174 "output port can be read from the input port.\n"
175 "Pipes are commonly used for communication with a newly\n"
176 "forked child process. The need to flush the output port\n"
177 "can be avoided by making it unbuffered using @code{setvbuf}.\n\n"
178 "Writes occur atomically provided the size of the data in\n"
179 "bytes is not greater than the value of @code{PIPE_BUF}\n"
180 "Note that the output port is likely to block if too much data\n"
181 "(typically equal to @code{PIPE_BUF}) has been written but not\n"
182 "yet read from the input port\n"
184 #define FUNC_NAME s_scm_pipe
193 p_rd
= scm_fdes_to_port (fd
[0], "r", sym_read_pipe
);
194 p_wt
= scm_fdes_to_port (fd
[1], "w", sym_write_pipe
);
195 return scm_cons (p_rd
, p_wt
);
200 #ifdef HAVE_GETGROUPS
201 SCM_DEFINE (scm_getgroups
, "getgroups", 0, 0, 0,
203 "Returns a vector of integers representing the current supplimentary group IDs.")
204 #define FUNC_NAME s_scm_getgroups
207 int ngroups
= getgroups (0, NULL
);
216 groups
= SCM_MUST_MALLOC_TYPE_NUM(GETGROUPS_T
,ngroups
);
217 val
= getgroups(ngroups
, groups
);
221 scm_must_free((char *)groups
);
225 SCM_SETCHARS(grps
, groups
); /* set up grps as a GC protect */
226 SCM_SETLENGTH(grps
, 0L + ngroups
* sizeof(GETGROUPS_T
), scm_tc7_string
);
227 ans
= scm_make_vector (SCM_MAKINUM(ngroups
), SCM_UNDEFINED
);
228 while (--ngroups
>= 0) SCM_VELTS(ans
)[ngroups
] = SCM_MAKINUM(groups
[ngroups
]);
229 SCM_SETCHARS(grps
, groups
); /* to make sure grps stays around. */
238 SCM_DEFINE (scm_getpwuid
, "getpw", 0, 1, 0,
240 "Look up an entry in the user database. @var{obj} can be an integer,\n"
241 "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n"
242 "or getpwent respectively.")
243 #define FUNC_NAME s_scm_getpwuid
246 struct passwd
*entry
;
249 result
= scm_make_vector (SCM_MAKINUM (7), SCM_UNSPECIFIED
);
250 ve
= SCM_VELTS (result
);
251 if (SCM_UNBNDP (user
) || SCM_FALSEP (user
))
253 SCM_SYSCALL (entry
= getpwent ());
259 else if (SCM_INUMP (user
))
261 entry
= getpwuid (SCM_INUM (user
));
265 SCM_VALIDATE_ROSTRING (1,user
);
266 if (SCM_SUBSTRP (user
))
267 user
= scm_makfromstr (SCM_ROCHARS (user
), SCM_ROLENGTH (user
), 0);
268 entry
= getpwnam (SCM_ROCHARS (user
));
271 SCM_MISC_ERROR ("entry not found", SCM_EOL
);
273 ve
[0] = scm_makfrom0str (entry
->pw_name
);
274 ve
[1] = scm_makfrom0str (entry
->pw_passwd
);
275 ve
[2] = scm_ulong2num ((unsigned long) entry
->pw_uid
);
276 ve
[3] = scm_ulong2num ((unsigned long) entry
->pw_gid
);
277 ve
[4] = scm_makfrom0str (entry
->pw_gecos
);
279 ve
[5] = scm_makfrom0str ("");
281 ve
[5] = scm_makfrom0str (entry
->pw_dir
);
282 if (!entry
->pw_shell
)
283 ve
[6] = scm_makfrom0str ("");
285 ve
[6] = scm_makfrom0str (entry
->pw_shell
);
292 SCM_DEFINE (scm_setpwent
, "setpw", 0, 1, 0,
294 "If called with a true argument, initialize or reset the password data\n"
295 "stream. Otherwise, close the stream. The @code{setpwent} and\n"
296 "@code{endpwent} procedures are implemented on top of this.")
297 #define FUNC_NAME s_scm_setpwent
299 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
303 return SCM_UNSPECIFIED
;
310 /* Combines getgrgid and getgrnam. */
311 SCM_DEFINE (scm_getgrgid
, "getgr", 0, 1, 0,
313 "Look up an entry in the group database. @var{obj} can be an integer,\n"
314 "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n"
315 "or getgrent respectively.")
316 #define FUNC_NAME s_scm_getgrgid
321 result
= scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED
);
322 ve
= SCM_VELTS (result
);
323 if (SCM_UNBNDP (name
) || (name
== SCM_BOOL_F
))
325 SCM_SYSCALL (entry
= getgrent ());
331 else if (SCM_INUMP (name
))
332 SCM_SYSCALL (entry
= getgrgid (SCM_INUM (name
)));
335 SCM_VALIDATE_ROSTRING (1,name
);
336 SCM_COERCE_SUBSTR (name
);
337 SCM_SYSCALL (entry
= getgrnam (SCM_ROCHARS (name
)));
342 ve
[0] = scm_makfrom0str (entry
->gr_name
);
343 ve
[1] = scm_makfrom0str (entry
->gr_passwd
);
344 ve
[2] = scm_ulong2num ((unsigned long) entry
->gr_gid
);
345 ve
[3] = scm_makfromstrs (-1, entry
->gr_mem
);
352 SCM_DEFINE (scm_setgrent
, "setgr", 0, 1, 0,
354 "If called with a true argument, initialize or reset the group data\n"
355 "stream. Otherwise, close the stream. The @code{setgrent} and\n"
356 "@code{endgrent} procedures are implemented on top of this.")
357 #define FUNC_NAME s_scm_setgrent
359 if (SCM_UNBNDP (arg
) || SCM_FALSEP (arg
))
363 return SCM_UNSPECIFIED
;
369 SCM_DEFINE (scm_kill
, "kill", 2, 0, 0,
371 "Sends a signal to the specified process or group of processes.\n\n"
372 "@var{pid} specifies the processes to which the signal is sent:\n\n"
374 "@item @var{pid} greater than 0\n"
375 "The process whose identifier is @var{pid}.\n"
376 "@item @var{pid} equal to 0\n"
377 "All processes in the current process group.\n"
378 "@item @var{pid} less than -1\n"
379 "The process group whose identifier is -@var{pid}\n"
380 "@item @var{pid} equal to -1\n"
381 "If the process is privileged, all processes except for some special\n"
382 "system processes. Otherwise, all processes with the current effective\n"
385 "@var{sig} should be specified using a variable corresponding to\n"
386 "the Unix symbolic name, e.g.,\n\n"
391 "Interrupt signal.\n"
393 #define FUNC_NAME s_scm_kill
395 SCM_VALIDATE_INUM (1,pid
);
396 SCM_VALIDATE_INUM (2,sig
);
397 /* Signal values are interned in scm_init_posix(). */
398 if (kill ((int) SCM_INUM (pid
), (int) SCM_INUM (sig
)) != 0)
400 return SCM_UNSPECIFIED
;
405 SCM_DEFINE (scm_waitpid
, "waitpid", 1, 1, 0,
406 (SCM pid
, SCM options
),
407 "This procedure collects status information from a child process which\n"
408 "has terminated or (optionally) stopped. Normally it will\n"
409 "suspend the calling process until this can be done. If more than one\n"
410 "child process is eligible then one will be chosen by the operating system.\n\n"
411 "The value of @var{pid} determines the behaviour:\n\n"
413 "@item @var{pid} greater than 0\n"
414 "Request status information from the specified child process.\n"
415 "@item @var{pid} equal to -1 or WAIT_ANY\n"
416 "Request status information for any child process.\n"
417 "@item @var{pid} equal to 0 or WAIT_MYPGRP\n"
418 "Request status information for any child process in the current process\n"
420 "@item @var{pid} less than -1\n"
421 "Request status information for any child process whose process group ID\n"
424 "The @var{options} argument, if supplied, should be the bitwise OR of the\n"
425 "values of zero or more of the following variables:\n\n"
427 "Return immediately even if there are no child processes to be collected.\n"
429 "@defvar WUNTRACED\n"
430 "Report status information for stopped processes as well as terminated\n"
433 "The return value is a pair containing:\n\n"
436 "The process ID of the child process, or 0 if @code{WNOHANG} was\n"
437 "specified and no process was collected.\n"
439 "The integer status value.\n"
441 #define FUNC_NAME s_scm_waitpid
446 SCM_VALIDATE_INUM (1,pid
);
447 if (SCM_UNBNDP (options
))
451 SCM_VALIDATE_INUM (2,options
);
452 /* Flags are interned in scm_init_posix. */
453 ioptions
= SCM_INUM (options
);
455 SCM_SYSCALL (i
= waitpid (SCM_INUM (pid
), &status
, ioptions
));
458 return scm_cons (SCM_MAKINUM (0L + i
), SCM_MAKINUM (0L + status
));
461 #endif /* HAVE_WAITPID */
463 SCM_DEFINE (scm_status_exit_val
, "status:exit-val", 1, 0, 0,
465 "Returns the exit status value, as would be\n"
466 "set if a process ended normally through a\n"
467 "call to @code{exit} or @code{_exit}, if any, otherwise @code{#f}.")
468 #define FUNC_NAME s_scm_status_exit_val
472 SCM_VALIDATE_INUM (1,status
);
474 /* On Ultrix, the WIF... macros assume their argument is an lvalue;
475 go figure. SCM_INUM does not yield an lvalue. */
476 lstatus
= SCM_INUM (status
);
477 if (WIFEXITED (lstatus
))
478 return (SCM_MAKINUM (WEXITSTATUS (lstatus
)));
484 SCM_DEFINE (scm_status_term_sig
, "status:term-sig", 1, 0, 0,
486 "Returns the signal number which terminated the\n"
487 "process, if any, otherwise @code{#f}.")
488 #define FUNC_NAME s_scm_status_term_sig
492 SCM_VALIDATE_INUM (1,status
);
494 lstatus
= SCM_INUM (status
);
495 if (WIFSIGNALED (lstatus
))
496 return SCM_MAKINUM (WTERMSIG (lstatus
));
502 SCM_DEFINE (scm_status_stop_sig
, "status:stop-sig", 1, 0, 0,
504 "Returns the signal number which stopped the\n"
505 "process, if any, otherwise @code{#f}.")
506 #define FUNC_NAME s_scm_status_stop_sig
510 SCM_VALIDATE_INUM (1,status
);
512 lstatus
= SCM_INUM (status
);
513 if (WIFSTOPPED (lstatus
))
514 return SCM_MAKINUM (WSTOPSIG (lstatus
));
520 SCM_DEFINE (scm_getppid
, "getppid", 0, 0, 0,
522 "Returns an integer representing the process ID of the parent process.")
523 #define FUNC_NAME s_scm_getppid
525 return SCM_MAKINUM (0L + getppid ());
531 SCM_DEFINE (scm_getuid
, "getuid", 0, 0, 0,
533 "Returns an integer representing the current real user ID.")
534 #define FUNC_NAME s_scm_getuid
536 return SCM_MAKINUM (0L + getuid ());
542 SCM_DEFINE (scm_getgid
, "getgid", 0, 0, 0,
544 "Returns an integer representing the current real group ID.")
545 #define FUNC_NAME s_scm_getgid
547 return SCM_MAKINUM (0L + getgid ());
553 SCM_DEFINE (scm_geteuid
, "geteuid", 0, 0, 0,
555 "Returns an integer representing the current effective user ID.\n"
556 "If the system does not support effective IDs, then the real ID\n"
557 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
558 "supports effective IDs.")
559 #define FUNC_NAME s_scm_geteuid
562 return SCM_MAKINUM (0L + geteuid ());
564 return SCM_MAKINUM (0L + getuid ());
571 SCM_DEFINE (scm_getegid
, "getegid", 0, 0, 0,
573 "Returns an integer representing the current effective group ID.\n"
574 "If the system does not support effective IDs, then the real ID\n"
575 "is returned. @code{(feature? 'EIDs)} reports whether the system\n"
576 "supports effective IDs.")
577 #define FUNC_NAME s_scm_getegid
580 return SCM_MAKINUM (0L + getegid ());
582 return SCM_MAKINUM (0L + getgid ());
588 SCM_DEFINE (scm_setuid
, "setuid", 1, 0, 0,
590 "Sets both the real and effective user IDs to the integer @var{id}, provided\n"
591 "the process has appropriate privileges.\n"
592 "The return value is unspecified.")
593 #define FUNC_NAME s_scm_setuid
595 SCM_VALIDATE_INUM (1,id
);
596 if (setuid (SCM_INUM (id
)) != 0)
598 return SCM_UNSPECIFIED
;
602 SCM_DEFINE (scm_setgid
, "setgid", 1, 0, 0,
604 "Sets both the real and effective group IDs to the integer @var{id}, provided\n"
605 "the process has appropriate privileges.\n"
606 "The return value is unspecified.")
607 #define FUNC_NAME s_scm_setgid
609 SCM_VALIDATE_INUM (1,id
);
610 if (setgid (SCM_INUM (id
)) != 0)
612 return SCM_UNSPECIFIED
;
616 SCM_DEFINE (scm_seteuid
, "seteuid", 1, 0, 0,
618 "Sets the effective user ID to the integer @var{id}, provided the process\n"
619 "has appropriate privileges. If effective IDs are not supported, the\n"
620 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
621 "system supports effective IDs.\n"
622 "The return value is unspecified.")
623 #define FUNC_NAME s_scm_seteuid
627 SCM_VALIDATE_INUM (1,id
);
629 rv
= seteuid (SCM_INUM (id
));
631 rv
= setuid (SCM_INUM (id
));
635 return SCM_UNSPECIFIED
;
640 SCM_DEFINE (scm_setegid
, "setegid", 1, 0, 0,
642 "Sets the effective group ID to the integer @var{id}, provided the process\n"
643 "has appropriate privileges. If effective IDs are not supported, the\n"
644 "real ID is set instead -- @code{(feature? 'EIDs)} reports whether the\n"
645 "system supports effective IDs.\n"
646 "The return value is unspecified.")
647 #define FUNC_NAME s_scm_setegid
651 SCM_VALIDATE_INUM (1,id
);
653 rv
= setegid (SCM_INUM (id
));
655 rv
= setgid (SCM_INUM (id
));
659 return SCM_UNSPECIFIED
;
665 SCM_DEFINE (scm_getpgrp
, "getpgrp", 0, 0, 0,
667 "Returns an integer representing the current process group ID.\n"
668 "This is the POSIX definition, not BSD.")
669 #define FUNC_NAME s_scm_getpgrp
672 fn
= (int (*) ()) getpgrp
;
673 return SCM_MAKINUM (fn (0));
678 SCM_DEFINE (scm_setpgid
, "setpgid", 2, 0, 0,
680 "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n"
681 "@var{pgid} must be integers: they can be zero to indicate the ID of the\n"
683 "Fails on systems that do not support job control.\n"
684 "The return value is unspecified.")
685 #define FUNC_NAME s_scm_setpgid
687 SCM_VALIDATE_INUM (1,pid
);
688 SCM_VALIDATE_INUM (2,pgid
);
689 /* FIXME(?): may be known as setpgrp. */
690 if (setpgid (SCM_INUM (pid
), SCM_INUM (pgid
)) != 0)
692 return SCM_UNSPECIFIED
;
695 #endif /* HAVE_SETPGID */
698 SCM_DEFINE (scm_setsid
, "setsid", 0, 0, 0,
700 "Creates a new session. The current process becomes the session leader\n"
701 "and is put in a new process group. The process will be detached\n"
702 "from its controlling terminal if it has one.\n"
703 "The return value is an integer representing the new process group ID.")
704 #define FUNC_NAME s_scm_setsid
706 pid_t sid
= setsid ();
709 return SCM_UNSPECIFIED
;
712 #endif /* HAVE_SETSID */
714 SCM_DEFINE (scm_ttyname
, "ttyname", 1, 0, 0,
716 "Returns a string with the name of the serial terminal device underlying\n"
718 #define FUNC_NAME s_scm_ttyname
723 port
= SCM_COERCE_OUTPORT (port
);
724 SCM_VALIDATE_OPPORT (1,port
);
725 if (scm_tc16_fport
!= SCM_TYP16 (port
))
727 fd
= SCM_FPORT_FDES (port
);
728 SCM_SYSCALL (ans
= ttyname (fd
));
731 /* ans could be overwritten by another call to ttyname */
732 return (scm_makfrom0str (ans
));
737 SCM_DEFINE (scm_ctermid
, "ctermid", 0, 0, 0,
739 "Returns a string containing the file name of the controlling terminal\n"
740 "for the current process.")
741 #define FUNC_NAME s_scm_ctermid
743 char *result
= ctermid (NULL
);
746 return scm_makfrom0str (result
);
749 #endif /* HAVE_CTERMID */
751 #ifdef HAVE_TCGETPGRP
752 SCM_DEFINE (scm_tcgetpgrp
, "tcgetpgrp", 1, 0, 0,
754 "Returns the process group ID of the foreground\n"
755 "process group associated with the terminal open on the file descriptor\n"
756 "underlying @var{port}.\n\n"
757 "If there is no foreground process group, the return value is a\n"
758 "number greater than 1 that does not match the process group ID\n"
759 "of any existing process group. This can happen if all of the\n"
760 "processes in the job that was formerly the foreground job have\n"
761 "terminated, and no other job has yet been moved into the\n"
763 #define FUNC_NAME s_scm_tcgetpgrp
768 port
= SCM_COERCE_OUTPORT (port
);
770 SCM_VALIDATE_OPFPORT (1,port
);
771 fd
= SCM_FPORT_FDES (port
);
772 if ((pgid
= tcgetpgrp (fd
)) == -1)
774 return SCM_MAKINUM (pgid
);
777 #endif /* HAVE_TCGETPGRP */
779 #ifdef HAVE_TCSETPGRP
780 SCM_DEFINE (scm_tcsetpgrp
, "tcsetpgrp", 2, 0, 0,
781 (SCM port
, SCM pgid
),
782 "Set the foreground process group ID for the terminal used by the file\n"
783 "descriptor underlying @var{port} to the integer @var{pgid}.\n"
784 "The calling process\n"
785 "must be a member of the same session as @var{pgid} and must have the same\n"
786 "controlling terminal. The return value is unspecified.")
787 #define FUNC_NAME s_scm_tcsetpgrp
791 port
= SCM_COERCE_OUTPORT (port
);
793 SCM_VALIDATE_OPFPORT (1,port
);
794 SCM_VALIDATE_INUM (2,pgid
);
795 fd
= SCM_FPORT_FDES (port
);
796 if (tcsetpgrp (fd
, SCM_INUM (pgid
)) == -1)
798 return SCM_UNSPECIFIED
;
801 #endif /* HAVE_TCSETPGRP */
803 /* Copy exec args from an SCM vector into a new C array. */
806 scm_convert_exec_args (SCM args
, int pos
, const char *subr
)
812 SCM_ASSERT (SCM_NULLP (args
)
813 || (SCM_CONSP (args
)),
815 num_args
= scm_ilength (args
);
817 scm_must_malloc ((num_args
+ 1) * sizeof (char *), subr
);
818 for (i
= 0; SCM_NNULLP (args
); args
= SCM_CDR (args
), ++i
)
823 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (args
)),
824 SCM_CAR (args
), SCM_ARGn
, subr
);
825 len
= 1 + SCM_ROLENGTH (SCM_CAR (args
));
826 dst
= (char *) scm_must_malloc ((long) len
, subr
);
827 src
= SCM_ROCHARS (SCM_CAR (args
));
836 SCM_DEFINE (scm_execl
, "execl", 1, 0, 1,
837 (SCM filename
, SCM args
),
838 "Executes the file named by @var{path} as a new process image.\n"
839 "The remaining arguments are supplied to the process; from a C program\n"
840 "they are accessable as the @code{argv} argument to @code{main}.\n"
841 "Conventionally the first @var{arg} is the same as @var{path}.\n"
842 "All arguments must be strings. \n\n"
843 "If @var{arg} is missing, @var{path} is executed with a null\n"
844 "argument list, which may have system-dependent side-effects.\n\n"
845 "This procedure is currently implemented using the @code{execv} system\n"
846 "call, but we call it @code{execl} because of its Scheme calling interface.")
847 #define FUNC_NAME s_scm_execl
850 SCM_VALIDATE_ROSTRING (1,filename
);
851 SCM_COERCE_SUBSTR (filename
);
852 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
853 execv (SCM_ROCHARS (filename
), execargv
);
860 SCM_DEFINE (scm_execlp
, "execlp", 1, 0, 1,
861 (SCM filename
, SCM args
),
862 "Similar to @code{execl}, however if\n"
863 "@var{filename} does not contain a slash\n"
864 "then the file to execute will be located by searching the\n"
865 "directories listed in the @code{PATH} environment variable.\n\n"
866 "This procedure is currently implemented using the @code{execlv} system\n"
867 "call, but we call it @code{execlp} because of its Scheme calling interface.")
868 #define FUNC_NAME s_scm_execlp
871 SCM_VALIDATE_ROSTRING (1,filename
);
872 SCM_COERCE_SUBSTR (filename
);
873 execargv
= scm_convert_exec_args (args
, SCM_ARG2
, FUNC_NAME
);
874 execvp (SCM_ROCHARS (filename
), execargv
);
882 environ_list_to_c (SCM envlist
, int arg
, const char *proc
)
888 SCM_ASSERT (SCM_NULLP (envlist
) || SCM_CONSP (envlist
),
890 num_strings
= scm_ilength (envlist
);
891 result
= (char **) malloc ((num_strings
+ 1) * sizeof (char *));
893 scm_memory_error (proc
);
894 while (SCM_NNULLP (envlist
))
899 SCM_ASSERT (SCM_ROSTRINGP (SCM_CAR (envlist
)),
901 len
= 1 + SCM_ROLENGTH (SCM_CAR (envlist
));
902 result
[i
] = malloc ((long) len
);
903 if (result
[i
] == NULL
)
904 scm_memory_error (proc
);
905 src
= SCM_ROCHARS (SCM_CAR (envlist
));
907 result
[i
][len
] = src
[len
];
908 envlist
= SCM_CDR (envlist
);
915 SCM_DEFINE (scm_execle
, "execle", 2, 0, 1,
916 (SCM filename
, SCM env
, SCM args
),
917 "Similar to @code{execl}, but the environment of the new process is\n"
918 "specified by @var{env}, which must be a list of strings as returned by the\n"
919 "@code{environ} procedure.\n\n"
920 "This procedure is currently implemented using the @code{execve} system\n"
921 "call, but we call it @code{execle} because of its Scheme calling interface.")
922 #define FUNC_NAME s_scm_execle
927 SCM_VALIDATE_ROSTRING (1,filename
);
928 SCM_COERCE_SUBSTR (filename
);
930 execargv
= scm_convert_exec_args (args
, SCM_ARG1
, FUNC_NAME
);
931 exec_env
= environ_list_to_c (env
, SCM_ARG2
, FUNC_NAME
);
932 execve (SCM_ROCHARS (filename
), execargv
, exec_env
);
939 SCM_DEFINE (scm_fork
, "primitive-fork", 0, 0, 0,
941 "Creates a new \"child\" process by duplicating the current \"parent\" process.\n"
942 "In the child the return value is 0. In the parent the return value is\n"
943 "the integer process ID of the child.\n\n"
944 "This procedure has been renamed from @code{fork} to avoid a naming conflict\n"
945 "with the scsh fork.")
946 #define FUNC_NAME s_scm_fork
952 return SCM_MAKINUM (0L+pid
);
957 SCM_DEFINE (scm_uname
, "uname", 0, 0, 0,
959 "Returns an object with some information about the computer system the\n"
960 "program is running on.")
961 #define FUNC_NAME s_scm_uname
964 SCM ans
= scm_make_vector (SCM_MAKINUM(5), SCM_UNSPECIFIED
);
965 SCM
*ve
= SCM_VELTS (ans
);
966 if (uname (&buf
) < 0)
968 ve
[0] = scm_makfrom0str (buf
.sysname
);
969 ve
[1] = scm_makfrom0str (buf
.nodename
);
970 ve
[2] = scm_makfrom0str (buf
.release
);
971 ve
[3] = scm_makfrom0str (buf
.version
);
972 ve
[4] = scm_makfrom0str (buf
.machine
);
975 ve[5] = scm_makfrom0str (buf.domainname);
980 #endif /* HAVE_UNAME */
982 SCM_DEFINE (scm_environ
, "environ", 0, 1, 0,
984 "If @var{env} is omitted, returns the current environment as a list of strings.\n"
985 "Otherwise it sets the current environment, which is also the\n"
986 "default environment for child processes, to the supplied list of strings.\n"
987 "Each member of @var{env} should be of the form\n"
988 "@code{NAME=VALUE} and values of @code{NAME} should not be duplicated.\n"
989 "If @var{env} is supplied then the return value is unspecified.")
990 #define FUNC_NAME s_scm_environ
992 if (SCM_UNBNDP (env
))
993 return scm_makfromstrs (-1, environ
);
998 new_environ
= environ_list_to_c (env
, SCM_ARG1
, FUNC_NAME
);
999 /* Free the old environment, except when called for the first
1004 static int first
= 1;
1007 for (ep
= environ
; *ep
!= NULL
; ep
++)
1009 free ((char *) environ
);
1013 environ
= new_environ
;
1014 return SCM_UNSPECIFIED
;
1021 SCM_DEFINE (scm_tmpnam
, "tmpnam", 0, 0, 0,
1023 "Create a new file in the file system with a unique name. The return\n"
1024 "value is the name of the new file. This function is implemented with\n"
1025 "the @code{tmpnam} function in the system libraries.")
1026 #define FUNC_NAME s_scm_tmpnam
1028 char name
[L_tmpnam
];
1029 SCM_SYSCALL (tmpnam (name
););
1030 return scm_makfrom0str (name
);
1036 SCM_DEFINE (scm_utime
, "utime", 1, 2, 0,
1037 (SCM pathname
, SCM actime
, SCM modtime
),
1038 "@code{utime} sets the access and modification times for\n"
1039 "the file named by @var{path}. If @var{actime} or @var{modtime}\n"
1040 "is not supplied, then the current time is used.\n"
1041 "@var{actime} and @var{modtime}\n"
1042 "must be integer time values as returned by the @code{current-time}\n"
1046 "(utime \"foo\" (- (current-time) 3600))\n"
1047 "@end smalllisp\n\n"
1048 "will set the access time to one hour in the past and the modification\n"
1049 "time to the current time.")
1050 #define FUNC_NAME s_scm_utime
1053 struct utimbuf utm_tmp
;
1055 SCM_VALIDATE_ROSTRING (1,pathname
);
1056 SCM_COERCE_SUBSTR (pathname
);
1057 if (SCM_UNBNDP (actime
))
1058 SCM_SYSCALL (time (&utm_tmp
.actime
));
1060 utm_tmp
.actime
= SCM_NUM2ULONG (2,actime
);
1062 if (SCM_UNBNDP (modtime
))
1063 SCM_SYSCALL (time (&utm_tmp
.modtime
));
1065 utm_tmp
.modtime
= SCM_NUM2ULONG (3,modtime
);
1067 SCM_SYSCALL (rv
= utime (SCM_ROCHARS (pathname
), &utm_tmp
));
1070 return SCM_UNSPECIFIED
;
1074 SCM_DEFINE (scm_access
, "access?", 2, 0, 0,
1075 (SCM path
, SCM how
),
1076 "Returns @code{#t} if @var{path} corresponds to an existing\n"
1077 "file and the current process\n"
1078 "has the type of access specified by @var{how}, otherwise \n"
1080 "@var{how} should be specified\n"
1081 "using the values of the variables listed below. Multiple values can\n"
1082 "be combined using a bitwise or, in which case @code{#t} will only\n"
1083 "be returned if all accesses are granted.\n\n"
1084 "Permissions are checked using the real id of the current process,\n"
1085 "not the effective id, although it's the effective id which determines\n"
1086 "whether the access would actually be granted.\n\n"
1088 "test for read permission.\n"
1091 "test for write permission.\n"
1094 "test for execute permission.\n"
1097 "test for existence of the file.\n"
1099 #define FUNC_NAME s_scm_access
1103 SCM_VALIDATE_ROSTRING (1,path
);
1104 if (SCM_SUBSTRP (path
))
1105 path
= scm_makfromstr (SCM_ROCHARS (path
), SCM_ROLENGTH (path
), 0);
1106 SCM_VALIDATE_INUM (2,how
);
1107 rv
= access (SCM_ROCHARS (path
), SCM_INUM (how
));
1108 return SCM_NEGATE_BOOL(rv
);
1112 SCM_DEFINE (scm_getpid
, "getpid", 0, 0, 0,
1114 "Returns an integer representing the current process ID.")
1115 #define FUNC_NAME s_scm_getpid
1117 return SCM_MAKINUM ((unsigned long) getpid ());
1121 SCM_DEFINE (scm_putenv
, "putenv", 1, 0, 0,
1123 "Modifies the environment of the current process, which is\n"
1124 "also the default environment inherited by child processes.\n\n"
1125 "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n"
1126 "directly into the environment, replacing any existing environment string\n"
1128 "name matching @code{NAME}. If @var{string} does not contain an equal\n"
1129 "sign, then any existing string with name matching @var{string} will\n"
1131 "The return value is unspecified.")
1132 #define FUNC_NAME s_scm_putenv
1137 SCM_VALIDATE_ROSTRING (1,str
);
1138 /* must make a new copy to be left in the environment, safe from gc. */
1139 ptr
= malloc (SCM_LENGTH (str
) + 1);
1142 strncpy (ptr
, SCM_ROCHARS (str
), SCM_LENGTH (str
));
1143 ptr
[SCM_LENGTH(str
)] = 0;
1147 return SCM_UNSPECIFIED
;
1151 #ifdef HAVE_SETLOCALE
1152 SCM_DEFINE (scm_setlocale
, "setlocale", 1, 1, 0,
1153 (SCM category
, SCM locale
),
1154 "If @var{locale} is omitted, returns the current value of the specified\n"
1155 "locale category \n"
1156 "as a system-dependent string.\n"
1157 "@var{category} should be specified using the values @code{LC_COLLATE},\n"
1158 "@code{LC_ALL} etc.\n\n"
1159 "Otherwise the specified locale category is set to\n"
1160 "the string @var{locale}\n"
1161 "and the new value is returned as a system-dependent string. If @var{locale}\n"
1162 "is an empty string, the locale will be set using envirionment variables.")
1163 #define FUNC_NAME s_scm_setlocale
1168 SCM_VALIDATE_INUM (1,category
);
1169 if (SCM_UNBNDP (locale
))
1175 SCM_VALIDATE_ROSTRING (2,locale
);
1176 SCM_COERCE_SUBSTR (locale
);
1177 clocale
= SCM_ROCHARS (locale
);
1180 rv
= setlocale (SCM_INUM (category
), clocale
);
1183 return scm_makfrom0str (rv
);
1186 #endif /* HAVE_SETLOCALE */
1189 SCM_DEFINE (scm_mknod
, "mknod", 4, 0, 0,
1190 (SCM path
, SCM type
, SCM perms
, SCM dev
),
1191 "Creates a new special file, such as a file corresponding to a device.\n"
1192 "@var{path} specifies the name of the file. @var{type} should\n"
1193 "be one of the following symbols:\n"
1194 "regular, directory, symlink, block-special, char-special,\n"
1195 "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n"
1196 "@var{dev} (an integer) specifies which device the special file refers\n"
1197 "to. Its exact interpretation depends on the kind of special file\n"
1198 "being created.\n\n"
1201 "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))"
1203 "The return value is unspecified.")
1204 #define FUNC_NAME s_scm_mknod
1210 SCM_VALIDATE_ROSTRING (1,path
);
1211 SCM_VALIDATE_SYMBOL (2,type
);
1212 SCM_VALIDATE_INUM (3,perms
);
1213 SCM_VALIDATE_INUM (4,dev
);
1214 SCM_COERCE_SUBSTR (path
);
1216 p
= SCM_CHARS (type
);
1217 if (strcmp (p
, "regular") == 0)
1219 else if (strcmp (p
, "directory") == 0)
1221 else if (strcmp (p
, "symlink") == 0)
1223 else if (strcmp (p
, "block-special") == 0)
1225 else if (strcmp (p
, "char-special") == 0)
1227 else if (strcmp (p
, "fifo") == 0)
1229 else if (strcmp (p
, "socket") == 0)
1232 SCM_OUT_OF_RANGE (2,type
);
1234 SCM_SYSCALL (val
= mknod(SCM_ROCHARS(path
), ctype
| SCM_INUM (perms
),
1238 return SCM_UNSPECIFIED
;
1241 #endif /* HAVE_MKNOD */
1244 SCM_DEFINE (scm_nice
, "nice", 1, 0, 0,
1246 "Increment the priority of the current process by @var{incr}. A higher\n"
1247 "priority value means that the process runs less often.\n"
1248 "The return value is unspecified.")
1249 #define FUNC_NAME s_scm_nice
1251 SCM_VALIDATE_INUM (1,incr
);
1252 if (nice(SCM_INUM(incr
)) != 0)
1254 return SCM_UNSPECIFIED
;
1257 #endif /* HAVE_NICE */
1260 SCM_DEFINE (scm_sync
, "sync", 0, 0, 0,
1262 "Flush the operating system disk buffers.\n"
1263 "The return value is unspecified.")
1264 #define FUNC_NAME s_scm_sync
1267 return SCM_UNSPECIFIED
;
1270 #endif /* HAVE_SYNC */
1275 scm_add_feature ("posix");
1277 scm_add_feature ("EIDs");
1280 scm_sysintern ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY
));
1283 scm_sysintern ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP
));
1286 scm_sysintern ("WNOHANG", SCM_MAKINUM (WNOHANG
));
1289 scm_sysintern ("WUNTRACED", SCM_MAKINUM (WUNTRACED
));
1292 /* access() symbols. */
1293 scm_sysintern ("R_OK", SCM_MAKINUM (R_OK
));
1294 scm_sysintern ("W_OK", SCM_MAKINUM (W_OK
));
1295 scm_sysintern ("X_OK", SCM_MAKINUM (X_OK
));
1296 scm_sysintern ("F_OK", SCM_MAKINUM (F_OK
));
1299 scm_sysintern ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE
));
1302 scm_sysintern ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE
));
1305 scm_sysintern ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY
));
1308 scm_sysintern ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC
));
1311 scm_sysintern ("LC_TIME", SCM_MAKINUM (LC_TIME
));
1314 scm_sysintern ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES
));
1317 scm_sysintern ("LC_ALL", SCM_MAKINUM (LC_ALL
));
1320 scm_sysintern ("PIPE_BUF", scm_long2num (PIPE_BUF
));
1323 #include "cpp_sig_symbols.c"