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guile/libguile/posix.c
Jim Blandy 7dc6e7547a * __scm.h, alist.c, async.c, async.h, backtrace.h, chars.c, 
continuations.c, debug.c, debug.h, dynl-dl.c, dynl.c, dynl.h,
dynwind.c, dynwind.h, eq.c, error.c, error.h, eval.c, eval.h,
feature.c, filesys.c, filesys.h, fports.c, fports.h, gc.c, gc.h,
genio.c, genio.h, gh.h, gh_data.c, gsubr.c, gsubr.h, hash.c,
hashtab.c, init.c, init.h, ioext.c, ioext.h, kw.c, libguile.h,
list.c, list.h, load.c, load.h, mallocs.c, markers.c,
mit-pthreads.c, net_db.c, numbers.c, numbers.h, options.c,
ports.c, ports.h, posix.c, posix.h, print.c, print.h, procprop.c,
procprop.h, procs.c, procs.h, ramap.c, ramap.h, regex-posix.c,
regex-posix.h, root.c, root.h, scmsigs.c, scmsigs.h, script.c,
script.h, simpos.c, simpos.h, smob.c, smob.h, snarf.h, socket.c,
srcprop.c, stackchk.c, stackchk.h, stacks.c, stime.c, stime.h,
strings.c, strings.h, strports.c, struct.c, struct.h, symbols.c,
symbols.h, tags.h, threads.c, throw.h, unif.c, variable.c,
vectors.c, vectors.h, version.h, vports.c, weaks.c: Update
copyright years.
1998-10-19 21:36:50 +00:00

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/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#include <stdio.h>
#include "_scm.h"
#include "fports.h"
#include "scmsigs.h"
#include "feature.h"
#include "posix.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#else
#ifndef ttyname
extern char *ttyname();
#endif
#endif
#ifdef LIBC_H_WITH_UNISTD_H
#include <libc.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pwd.h>
#if HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#ifndef WEXITSTATUS
# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
#endif
#ifndef WIFEXITED
# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
#endif
#include <signal.h>
extern FILE *popen ();
extern char ** environ;
#include <grp.h>
#include <sys/utsname.h>
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#ifdef HAVE_SETLOCALE
#include <locale.h>
#endif
/* Some Unix systems don't define these. CPP hair is dangerous, but
this seems safe enough... */
#ifndef R_OK
#define R_OK 4
#endif
#ifndef W_OK
#define W_OK 2
#endif
#ifndef X_OK
#define X_OK 1
#endif
#ifndef F_OK
#define F_OK 0
#endif
/* On NextStep, <utime.h> doesn't define struct utime, unless we
#define _POSIX_SOURCE before #including it. I think this is less
of a kludge than defining struct utimbuf ourselves. */
#ifdef UTIMBUF_NEEDS_POSIX
#define _POSIX_SOURCE
#endif
#ifdef HAVE_SYS_UTIME_H
#include <sys/utime.h>
#endif
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
/* Please don't add any more #includes or #defines here. The hack
above means that _POSIX_SOURCE may be #defined, which will
encourage header files to do strange things. */
SCM_SYMBOL (sym_read_pipe, "read pipe");
SCM_SYMBOL (sym_write_pipe, "write pipe");
SCM_PROC (s_pipe, "pipe", 0, 0, 0, scm_pipe);
SCM
scm_pipe ()
{
int fd[2], rv;
FILE *f_rd, *f_wt;
SCM p_rd, p_wt;
rv = pipe (fd);
if (rv)
scm_syserror (s_pipe);
f_rd = fdopen (fd[0], "r");
if (!f_rd)
{
SCM_SYSCALL (close (fd[0]));
SCM_SYSCALL (close (fd[1]));
scm_syserror (s_pipe);
}
f_wt = fdopen (fd[1], "w");
if (!f_wt)
{
int en;
en = errno;
fclose (f_rd);
SCM_SYSCALL (close (fd[1]));
errno = en;
scm_syserror (s_pipe);
}
p_rd = scm_stdio_to_port (f_rd, "r", sym_read_pipe);
p_wt = scm_stdio_to_port (f_wt, "w", sym_write_pipe);
SCM_ALLOW_INTS;
return scm_cons (p_rd, p_wt);
}
#ifdef HAVE_GETGROUPS
SCM_PROC (s_getgroups, "getgroups", 0, 0, 0, scm_getgroups);
SCM
scm_getgroups()
{
SCM grps, ans;
int ngroups = getgroups (0, NULL);
if (!ngroups)
scm_syserror (s_getgroups);
SCM_NEWCELL(grps);
SCM_DEFER_INTS;
{
GETGROUPS_T *groups;
int val;
groups = (GETGROUPS_T *) scm_must_malloc(ngroups * sizeof(GETGROUPS_T),
s_getgroups);
val = getgroups(ngroups, groups);
if (val < 0)
{
scm_must_free((char *)groups);
scm_syserror (s_getgroups);
}
SCM_SETCHARS(grps, groups); /* set up grps as a GC protect */
SCM_SETLENGTH(grps, 0L + ngroups * sizeof(GETGROUPS_T), scm_tc7_string);
SCM_ALLOW_INTS;
ans = scm_make_vector (SCM_MAKINUM(ngroups), SCM_UNDEFINED);
while (--ngroups >= 0) SCM_VELTS(ans)[ngroups] = SCM_MAKINUM(groups[ngroups]);
SCM_SETCHARS(grps, groups); /* to make sure grps stays around. */
return ans;
}
}
#endif
SCM_PROC (s_getpwuid, "getpw", 0, 1, 0, scm_getpwuid);
SCM
scm_getpwuid (user)
SCM user;
{
SCM result;
struct passwd *entry;
SCM *ve;
result = scm_make_vector (SCM_MAKINUM (7), SCM_UNSPECIFIED);
ve = SCM_VELTS (result);
if (SCM_UNBNDP (user) || SCM_FALSEP (user))
{
SCM_DEFER_INTS;
SCM_SYSCALL (entry = getpwent ());
if (! entry)
{
SCM_ALLOW_INTS;
return SCM_BOOL_F;
}
}
else if (SCM_INUMP (user))
{
SCM_DEFER_INTS;
entry = getpwuid (SCM_INUM (user));
}
else
{
SCM_ASSERT (SCM_NIMP (user) && SCM_ROSTRINGP (user), user, SCM_ARG1, s_getpwuid);
if (SCM_SUBSTRP (user))
user = scm_makfromstr (SCM_ROCHARS (user), SCM_ROLENGTH (user), 0);
SCM_DEFER_INTS;
entry = getpwnam (SCM_ROCHARS (user));
}
if (!entry)
scm_misc_error (s_getpwuid, "entry not found", SCM_EOL);
ve[0] = scm_makfrom0str (entry->pw_name);
ve[1] = scm_makfrom0str (entry->pw_passwd);
ve[2] = scm_ulong2num ((unsigned long) entry->pw_uid);
ve[3] = scm_ulong2num ((unsigned long) entry->pw_gid);
ve[4] = scm_makfrom0str (entry->pw_gecos);
if (!entry->pw_dir)
ve[5] = scm_makfrom0str ("");
else
ve[5] = scm_makfrom0str (entry->pw_dir);
if (!entry->pw_shell)
ve[6] = scm_makfrom0str ("");
else
ve[6] = scm_makfrom0str (entry->pw_shell);
SCM_ALLOW_INTS;
return result;
}
#ifdef HAVE_SETPWENT
SCM_PROC (s_setpwent, "setpw", 0, 1, 0, scm_setpwent);
SCM
scm_setpwent (arg)
SCM arg;
{
if (SCM_UNBNDP (arg) || SCM_FALSEP (arg))
endpwent ();
else
setpwent ();
return SCM_UNSPECIFIED;
}
#endif
/* Combines getgrgid and getgrnam. */
SCM_PROC (s_getgrgid, "getgr", 0, 1, 0, scm_getgrgid);
SCM
scm_getgrgid (name)
SCM name;
{
SCM result;
struct group *entry;
SCM *ve;
result = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED);
ve = SCM_VELTS (result);
SCM_DEFER_INTS;
if (SCM_UNBNDP (name) || (name == SCM_BOOL_F))
{
SCM_SYSCALL (entry = getgrent ());
if (! entry)
{
SCM_ALLOW_INTS;
return SCM_BOOL_F;
}
}
else if (SCM_INUMP (name))
SCM_SYSCALL (entry = getgrgid (SCM_INUM (name)));
else
{
SCM_ASSERT (SCM_NIMP (name) && SCM_ROSTRINGP (name), name, SCM_ARG1,
s_getgrgid);
SCM_COERCE_SUBSTR (name);
SCM_SYSCALL (entry = getgrnam (SCM_ROCHARS (name)));
}
if (!entry)
scm_syserror (s_getgrgid);
ve[0] = scm_makfrom0str (entry->gr_name);
ve[1] = scm_makfrom0str (entry->gr_passwd);
ve[2] = scm_ulong2num ((unsigned long) entry->gr_gid);
ve[3] = scm_makfromstrs (-1, entry->gr_mem);
SCM_ALLOW_INTS;
return result;
}
SCM_PROC (s_setgrent, "setgr", 0, 1, 0, scm_setgrent);
SCM
scm_setgrent (arg)
SCM arg;
{
if (SCM_UNBNDP (arg) || SCM_FALSEP (arg))
endgrent ();
else
setgrent ();
return SCM_UNSPECIFIED;
}
SCM_PROC (s_kill, "kill", 2, 0, 0, scm_kill);
SCM
scm_kill (pid, sig)
SCM pid;
SCM sig;
{
SCM_ASSERT (SCM_INUMP (pid), pid, SCM_ARG1, s_kill);
SCM_ASSERT (SCM_INUMP (sig), sig, SCM_ARG2, s_kill);
/* Signal values are interned in scm_init_posix(). */
if (kill ((int) SCM_INUM (pid), (int) SCM_INUM (sig)) != 0)
scm_syserror (s_kill);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_waitpid, "waitpid", 1, 1, 0, scm_waitpid);
SCM
scm_waitpid (pid, options)
SCM pid;
SCM options;
{
#ifdef HAVE_WAITPID
int i;
int status;
int ioptions;
SCM_ASSERT (SCM_INUMP (pid), pid, SCM_ARG1, s_waitpid);
if (SCM_UNBNDP (options))
ioptions = 0;
else
{
SCM_ASSERT (SCM_INUMP (options), options, SCM_ARG2, s_waitpid);
/* Flags are interned in scm_init_posix. */
ioptions = SCM_INUM (options);
}
SCM_SYSCALL (i = waitpid (SCM_INUM (pid), &status, ioptions));
if (i == -1)
scm_syserror (s_waitpid);
return scm_cons (SCM_MAKINUM (0L + i), SCM_MAKINUM (0L + status));
#else
scm_sysmissing (s_waitpid);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_status_exit_val, "status:exit-val", 1, 0, 0, scm_status_exit_val);
SCM
scm_status_exit_val (status)
SCM status;
{
int lstatus;
SCM_ASSERT (SCM_INUMP (status), status, SCM_ARG1,s_status_exit_val);
/* On Ultrix, the WIF... macros assume their argument is an lvalue;
go figure. SCM_INUM does not yield an lvalue. */
lstatus = SCM_INUM (status);
if (WIFEXITED (lstatus))
return (SCM_MAKINUM (WEXITSTATUS (lstatus)));
else
return SCM_BOOL_F;
}
SCM_PROC (s_status_term_sig, "status:term-sig", 1, 0, 0, scm_status_term_sig);
SCM
scm_status_term_sig (status)
SCM status;
{
int lstatus;
SCM_ASSERT (SCM_INUMP (status), status, SCM_ARG1,s_status_term_sig);
lstatus = SCM_INUM (status);
if (WIFSIGNALED (lstatus))
return SCM_MAKINUM (WTERMSIG (lstatus));
else
return SCM_BOOL_F;
}
SCM_PROC (s_status_stop_sig, "status:stop-sig", 1, 0, 0, scm_status_stop_sig);
SCM
scm_status_stop_sig (status)
SCM status;
{
int lstatus;
SCM_ASSERT (SCM_INUMP (status), status, SCM_ARG1,s_status_stop_sig);
lstatus = SCM_INUM (status);
if (WIFSTOPPED (lstatus))
return SCM_MAKINUM (WSTOPSIG (lstatus));
else
return SCM_BOOL_F;
}
SCM_PROC (s_getppid, "getppid", 0, 0, 0, scm_getppid);
SCM
scm_getppid ()
{
return SCM_MAKINUM (0L + getppid ());
}
SCM_PROC (s_getuid, "getuid", 0, 0, 0, scm_getuid);
SCM
scm_getuid ()
{
return SCM_MAKINUM (0L + getuid ());
}
SCM_PROC (s_getgid, "getgid", 0, 0, 0, scm_getgid);
SCM
scm_getgid ()
{
return SCM_MAKINUM (0L + getgid ());
}
SCM_PROC (s_geteuid, "geteuid", 0, 0, 0, scm_geteuid);
SCM
scm_geteuid ()
{
#ifdef HAVE_GETEUID
return SCM_MAKINUM (0L + geteuid ());
#else
return SCM_MAKINUM (0L + getuid ());
#endif
}
SCM_PROC (s_getegid, "getegid", 0, 0, 0, scm_getegid);
SCM
scm_getegid ()
{
#ifdef HAVE_GETEUID
return SCM_MAKINUM (0L + getegid ());
#else
return SCM_MAKINUM (0L + getgid ());
#endif
}
SCM_PROC (s_setuid, "setuid", 1, 0, 0, scm_setuid);
SCM
scm_setuid (id)
SCM id;
{
SCM_ASSERT (SCM_INUMP (id), id, SCM_ARG1, s_setuid);
if (setuid (SCM_INUM (id)) != 0)
scm_syserror (s_setuid);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_setgid, "setgid", 1, 0, 0, scm_setgid);
SCM
scm_setgid (id)
SCM id;
{
SCM_ASSERT (SCM_INUMP (id), id, SCM_ARG1, s_setgid);
if (setgid (SCM_INUM (id)) != 0)
scm_syserror (s_setgid);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_seteuid, "seteuid", 1, 0, 0, scm_seteuid);
SCM
scm_seteuid (id)
SCM id;
{
int rv;
SCM_ASSERT (SCM_INUMP (id), id, SCM_ARG1, s_seteuid);
#ifdef HAVE_SETEUID
rv = seteuid (SCM_INUM (id));
#else
rv = setuid (SCM_INUM (id));
#endif
if (rv != 0)
scm_syserror (s_seteuid);
return SCM_UNSPECIFIED;
}
#ifdef HAVE_SETEGID
SCM_PROC (s_setegid, "setegid", 1, 0, 0, scm_setegid);
SCM
scm_setegid (id)
SCM id;
{
int rv;
SCM_ASSERT (SCM_INUMP (id), id, SCM_ARG1, s_setegid);
#ifdef HAVE_SETEUID
rv = setegid (SCM_INUM (id));
#else
rv = setgid (SCM_INUM (id));
#endif
if (rv != 0)
scm_syserror (s_setegid);
return SCM_UNSPECIFIED;
}
#endif
SCM_PROC (s_getpgrp, "getpgrp", 0, 0, 0, scm_getpgrp);
SCM
scm_getpgrp ()
{
int (*fn)();
fn = (int (*) ()) getpgrp;
return SCM_MAKINUM (fn (0));
}
SCM_PROC (s_setpgid, "setpgid", 2, 0, 0, scm_setpgid);
SCM
scm_setpgid (pid, pgid)
SCM pid, pgid;
{
#ifdef HAVE_SETPGID
SCM_ASSERT (SCM_INUMP (pid), pid, SCM_ARG1, s_setpgid);
SCM_ASSERT (SCM_INUMP (pgid), pgid, SCM_ARG2, s_setpgid);
/* FIXME(?): may be known as setpgrp. */
if (setpgid (SCM_INUM (pid), SCM_INUM (pgid)) != 0)
scm_syserror (s_setpgid);
return SCM_UNSPECIFIED;
#else
scm_sysmissing (s_setpgid);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_setsid, "setsid", 0, 0, 0, scm_setsid);
SCM
scm_setsid ()
{
#ifdef HAVE_SETSID
pid_t sid = setsid ();
if (sid == -1)
scm_syserror (s_setsid);
return SCM_UNSPECIFIED;
#else
scm_sysmissing (s_setsid);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_ttyname, "ttyname", 1, 0, 0, scm_ttyname);
SCM
scm_ttyname (port)
SCM port;
{
char *ans;
int fd;
port = SCM_COERCE_OUTPORT (port);
SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_ttyname);
if (scm_tc16_fport != SCM_TYP16 (port))
return SCM_BOOL_F;
fd = fileno ((FILE *)SCM_STREAM (port));
if (fd == -1)
scm_syserror (s_ttyname);
SCM_SYSCALL (ans = ttyname (fd));
if (!ans)
scm_syserror (s_ttyname);
/* ans could be overwritten by another call to ttyname */
return (scm_makfrom0str (ans));
}
SCM_PROC (s_ctermid, "ctermid", 0, 0, 0, scm_ctermid);
SCM
scm_ctermid ()
{
#ifdef HAVE_CTERMID
char *result = ctermid (NULL);
if (*result == '\0')
scm_syserror (s_ctermid);
return scm_makfrom0str (result);
#else
scm_sysmissing (s_ctermid);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_tcgetpgrp, "tcgetpgrp", 1, 0, 0, scm_tcgetpgrp);
SCM
scm_tcgetpgrp (port)
SCM port;
{
#ifdef HAVE_TCGETPGRP
int fd;
pid_t pgid;
port = SCM_COERCE_OUTPORT (port);
SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_tcgetpgrp);
fd = fileno ((FILE *)SCM_STREAM (port));
if (fd == -1 || (pgid = tcgetpgrp (fd)) == -1)
scm_syserror (s_tcgetpgrp);
return SCM_MAKINUM (pgid);
#else
scm_sysmissing (s_tcgetpgrp);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_tcsetpgrp, "tcsetpgrp", 2, 0, 0, scm_tcsetpgrp);
SCM
scm_tcsetpgrp (port, pgid)
SCM port, pgid;
{
#ifdef HAVE_TCSETPGRP
int fd;
port = SCM_COERCE_OUTPORT (port);
SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_tcsetpgrp);
SCM_ASSERT (SCM_INUMP (pgid), pgid, SCM_ARG2, s_tcsetpgrp);
fd = fileno ((FILE *)SCM_STREAM (port));
if (fd == -1 || tcsetpgrp (fd, SCM_INUM (pgid)) == -1)
scm_syserror (s_tcsetpgrp);
return SCM_UNSPECIFIED;
#else
scm_sysmissing (s_tcsetpgrp);
/* not reached. */
return SCM_BOOL_F;
#endif
}
/* Copy exec args from an SCM vector into a new C array. */
static char **
scm_convert_exec_args (SCM args, int pos, char *subr)
{
char **execargv;
int num_args;
int i;
SCM_ASSERT (SCM_NULLP (args)
|| (SCM_NIMP (args) && SCM_CONSP (args)),
args, pos, subr);
SCM_DEFER_INTS;
num_args = scm_ilength (args);
execargv = (char **)
scm_must_malloc ((num_args + 1) * sizeof (char *), subr);
for (i = 0; SCM_NNULLP (args); args = SCM_CDR (args), ++i)
{
scm_sizet len;
char *dst;
char *src;
SCM_ASSERT (SCM_NIMP (SCM_CAR (args)) && SCM_ROSTRINGP (SCM_CAR (args)),
SCM_CAR (args), SCM_ARGn, subr);
len = 1 + SCM_ROLENGTH (SCM_CAR (args));
dst = (char *) scm_must_malloc ((long) len, subr);
src = SCM_ROCHARS (SCM_CAR (args));
while (len--)
dst[len] = src[len];
execargv[i] = dst;
}
execargv[i] = 0;
SCM_ALLOW_INTS;
return execargv;
}
SCM_PROC (s_execl, "execl", 1, 0, 1, scm_execl);
SCM
scm_execl (filename, args)
SCM filename, args;
{
char **execargv;
SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename,
SCM_ARG1, s_execl);
SCM_COERCE_SUBSTR (filename);
execargv = scm_convert_exec_args (args, SCM_ARG2, s_execl);
execv (SCM_ROCHARS (filename), execargv);
scm_syserror (s_execl);
/* not reached. */
return SCM_BOOL_F;
}
SCM_PROC (s_execlp, "execlp", 1, 0, 1, scm_execlp);
SCM
scm_execlp (filename, args)
SCM filename, args;
{
char **execargv;
SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename,
SCM_ARG1, s_execlp);
SCM_COERCE_SUBSTR (filename);
execargv = scm_convert_exec_args (args, SCM_ARG2, s_execlp);
execvp (SCM_ROCHARS (filename), execargv);
scm_syserror (s_execlp);
/* not reached. */
return SCM_BOOL_F;
}
static char **
environ_list_to_c (SCM envlist, int arg, char *proc)
{
int num_strings;
char **result;
int i = 0;
SCM_REDEFER_INTS;
SCM_ASSERT (SCM_NULLP (envlist)
|| (SCM_NIMP (envlist) && SCM_CONSP (envlist)),
envlist, arg, proc);
num_strings = scm_ilength (envlist);
result = (char **) malloc ((num_strings + 1) * sizeof (char *));
if (result == NULL)
scm_memory_error (proc);
while (SCM_NNULLP (envlist))
{
int len;
char *src;
SCM_ASSERT (SCM_NIMP (SCM_CAR (envlist))
&& SCM_ROSTRINGP (SCM_CAR (envlist)),
envlist, arg, proc);
len = 1 + SCM_ROLENGTH (SCM_CAR (envlist));
result[i] = malloc ((long) len);
if (result[i] == NULL)
scm_memory_error (proc);
src = SCM_ROCHARS (SCM_CAR (envlist));
while (len--)
result[i][len] = src[len];
envlist = SCM_CDR (envlist);
i++;
}
result[i] = 0;
SCM_REALLOW_INTS;
return result;
}
SCM_PROC (s_execle, "execle", 2, 0, 1, scm_execle);
SCM
scm_execle (filename, env, args)
SCM filename, env, args;
{
char **execargv;
char **exec_env;
SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename,
SCM_ARG1, s_execle);
SCM_COERCE_SUBSTR (filename);
execargv = scm_convert_exec_args (args, SCM_ARG1, s_execle);
exec_env = environ_list_to_c (env, SCM_ARG2, s_execle);
execve (SCM_ROCHARS (filename), execargv, exec_env);
scm_syserror (s_execle);
/* not reached. */
return SCM_BOOL_F;
}
SCM_PROC (s_fork, "primitive-fork", 0, 0, 0, scm_fork);
SCM
scm_fork()
{
int pid;
pid = fork ();
if (pid == -1)
scm_syserror (s_fork);
return SCM_MAKINUM (0L+pid);
}
SCM_PROC (s_uname, "uname", 0, 0, 0, scm_uname);
SCM
scm_uname ()
{
#ifdef HAVE_UNAME
struct utsname buf;
SCM ans = scm_make_vector (SCM_MAKINUM(5), SCM_UNSPECIFIED);
SCM *ve = SCM_VELTS (ans);
SCM_DEFER_INTS;
if (uname (&buf) < 0)
scm_syserror (s_uname);
ve[0] = scm_makfrom0str (buf.sysname);
ve[1] = scm_makfrom0str (buf.nodename);
ve[2] = scm_makfrom0str (buf.release);
ve[3] = scm_makfrom0str (buf.version);
ve[4] = scm_makfrom0str (buf.machine);
/*
a linux special?
ve[5] = scm_makfrom0str (buf.domainname);
*/
SCM_ALLOW_INTS;
return ans;
#else
scm_sysmissing (s_uname);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_environ, "environ", 0, 1, 0, scm_environ);
SCM
scm_environ (env)
SCM env;
{
if (SCM_UNBNDP (env))
return scm_makfromstrs (-1, environ);
else
{
char **new_environ;
SCM_DEFER_INTS;
new_environ = environ_list_to_c (env, SCM_ARG1, s_environ);
/* Free the old environment, except when called for the first
* time.
*/
{
char **ep;
static int first = 1;
if (!first)
{
for (ep = environ; *ep != NULL; ep++)
free (*ep);
free ((char *) environ);
}
first = 0;
}
environ = new_environ;
SCM_ALLOW_INTS;
return SCM_UNSPECIFIED;
}
}
#ifdef L_tmpnam
SCM_PROC (s_tmpnam, "tmpnam", 0, 0, 0, scm_tmpnam);
SCM scm_tmpnam()
{
char name[L_tmpnam];
SCM_SYSCALL (tmpnam (name););
return scm_makfrom0str (name);
}
#endif
SCM_PROC (s_open_pipe, "open-pipe", 2, 0, 0, scm_open_pipe);
SCM
scm_open_pipe (pipestr, modes)
SCM pipestr;
SCM modes;
{
FILE *f;
register SCM z;
struct scm_port_table * pt;
SCM_ASSERT (SCM_NIMP (pipestr) && SCM_ROSTRINGP (pipestr), pipestr,
SCM_ARG1, s_open_pipe);
if (SCM_SUBSTRP (pipestr))
pipestr = scm_makfromstr (SCM_ROCHARS (pipestr),
SCM_ROLENGTH (pipestr), 0);
SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2,
s_open_pipe);
if (SCM_SUBSTRP (modes))
modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0);
SCM_NEWCELL (z);
SCM_DEFER_INTS;
SCM_SYSCALL (f = popen (SCM_ROCHARS (pipestr), SCM_ROCHARS (modes)));
if (!f)
scm_syserror (s_open_pipe);
pt = scm_add_to_port_table (z);
SCM_SETPTAB_ENTRY (z, pt);
SCM_SETCAR (z, scm_tc16_pipe | SCM_OPN
| (strchr (SCM_ROCHARS (modes), 'r') ? SCM_RDNG : SCM_WRTNG));
SCM_SETSTREAM (z, (SCM)f);
SCM_ALLOW_INTS;
return z;
}
SCM_PROC (s_close_pipe, "close-pipe", 1, 0, 0, scm_close_pipe);
SCM
scm_close_pipe (port)
SCM port;
{
int rv;
SCM_ASSERT (SCM_NIMP (port) && SCM_TYP16(port) == scm_tc16_pipe
&& SCM_OPENP (port), port, SCM_ARG1, s_close_pipe);
SCM_DEFER_INTS;
rv = pclose ((FILE *) SCM_STREAM (port));
scm_remove_from_port_table (port);
SCM_SETAND_CAR (port, ~SCM_OPN);
if (rv == -1)
scm_syserror (s_close_pipe);
SCM_ALLOW_INTS;
return SCM_MAKINUM (rv);
}
SCM_PROC (s_utime, "utime", 1, 2, 0, scm_utime);
SCM
scm_utime (pathname, actime, modtime)
SCM pathname;
SCM actime;
SCM modtime;
{
int rv;
struct utimbuf utm_tmp;
SCM_ASSERT (SCM_NIMP (pathname) && SCM_ROSTRINGP (pathname), pathname,
SCM_ARG1, s_utime);
SCM_COERCE_SUBSTR (pathname);
if (SCM_UNBNDP (actime))
SCM_SYSCALL (time (&utm_tmp.actime));
else
utm_tmp.actime = scm_num2ulong (actime, (char *) SCM_ARG2, s_utime);
if (SCM_UNBNDP (modtime))
SCM_SYSCALL (time (&utm_tmp.modtime));
else
utm_tmp.modtime = scm_num2ulong (modtime, (char *) SCM_ARG3, s_utime);
SCM_SYSCALL (rv = utime (SCM_ROCHARS (pathname), &utm_tmp));
if (rv != 0)
scm_syserror (s_utime);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_access, "access?", 2, 0, 0, scm_access);
SCM
scm_access (path, how)
SCM path;
SCM how;
{
int rv;
SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1,
s_access);
if (SCM_SUBSTRP (path))
path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0);
SCM_ASSERT (SCM_INUMP (how), how, SCM_ARG2, s_access);
rv = access (SCM_ROCHARS (path), SCM_INUM (how));
return rv ? SCM_BOOL_F : SCM_BOOL_T;
}
SCM_PROC (s_getpid, "getpid", 0, 0, 0, scm_getpid);
SCM
scm_getpid ()
{
return SCM_MAKINUM ((unsigned long) getpid ());
}
SCM_PROC (s_putenv, "putenv", 1, 0, 0, scm_putenv);
SCM
scm_putenv (str)
SCM str;
{
int rv;
char *ptr;
SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_putenv);
/* must make a new copy to be left in the environment, safe from gc. */
ptr = malloc (SCM_LENGTH (str) + 1);
if (ptr == NULL)
scm_memory_error (s_putenv);
strncpy (ptr, SCM_ROCHARS (str), SCM_LENGTH (str));
ptr[SCM_LENGTH(str)] = 0;
rv = putenv (ptr);
if (rv < 0)
scm_syserror (s_putenv);
return SCM_UNSPECIFIED;
}
SCM_PROC (s_setlocale, "setlocale", 1, 1, 0, scm_setlocale);
SCM
scm_setlocale (category, locale)
SCM category;
SCM locale;
{
#ifdef HAVE_SETLOCALE
char *clocale;
char *rv;
SCM_ASSERT (SCM_INUMP (category), category, SCM_ARG1, s_setlocale);
if (SCM_UNBNDP (locale))
{
clocale = NULL;
}
else
{
SCM_ASSERT (SCM_NIMP (locale) && SCM_ROSTRINGP (locale), locale,
SCM_ARG2, s_setlocale);
SCM_COERCE_SUBSTR (locale);
clocale = SCM_ROCHARS (locale);
}
rv = setlocale (SCM_INUM (category), clocale);
if (rv == NULL)
scm_syserror (s_setlocale);
return scm_makfrom0str (rv);
#else
scm_sysmissing (s_setlocale);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_mknod, "mknod", 4, 0, 0, scm_mknod);
SCM
scm_mknod(path, type, perms, dev)
SCM path;
SCM type;
SCM perms;
SCM dev;
{
#ifdef HAVE_MKNOD
int val;
char *p;
int ctype = 0;
SCM_ASSERT (SCM_NIMP(path) && SCM_ROSTRINGP(path), path, SCM_ARG1, s_mknod);
SCM_ASSERT (SCM_NIMP(type) && SCM_SYMBOLP (type), type, SCM_ARG2, s_mknod);
SCM_ASSERT (SCM_INUMP (perms), perms, SCM_ARG3, s_mknod);
SCM_ASSERT (SCM_INUMP(dev), dev, SCM_ARG4, s_mknod);
SCM_COERCE_SUBSTR (path);
p = SCM_CHARS (type);
if (strcmp (p, "regular") == 0)
ctype = S_IFREG;
else if (strcmp (p, "directory") == 0)
ctype = S_IFDIR;
else if (strcmp (p, "symlink") == 0)
ctype = S_IFLNK;
else if (strcmp (p, "block-special") == 0)
ctype = S_IFBLK;
else if (strcmp (p, "char-special") == 0)
ctype = S_IFCHR;
else if (strcmp (p, "fifo") == 0)
ctype = S_IFIFO;
else if (strcmp (p, "socket") == 0)
ctype = S_IFSOCK;
else
scm_out_of_range (s_mknod, type);
SCM_DEFER_INTS;
SCM_SYSCALL (val = mknod(SCM_ROCHARS(path), ctype | SCM_INUM (perms),
SCM_INUM (dev)));
if (val != 0)
scm_syserror (s_mknod);
SCM_ALLOW_INTS;
return SCM_UNSPECIFIED;
#else
scm_sysmissing (s_mknod);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_nice, "nice", 1, 0, 0, scm_nice);
SCM
scm_nice(incr)
SCM incr;
{
#ifdef HAVE_NICE
SCM_ASSERT(SCM_INUMP(incr), incr, SCM_ARG1, s_nice);
if (nice(SCM_INUM(incr)) != 0)
scm_syserror (s_nice);
return SCM_UNSPECIFIED;
#else
scm_sysmissing (s_nice);
/* not reached. */
return SCM_BOOL_F;
#endif
}
SCM_PROC (s_sync, "sync", 0, 0, 0, scm_sync);
SCM
scm_sync()
{
#ifdef HAVE_SYNC
sync();
#else
scm_sysmissing (s_sync);
/* not reached. */
#endif
return SCM_UNSPECIFIED;
}
void
scm_init_posix ()
{
scm_add_feature ("posix");
#ifdef HAVE_GETEUID
scm_add_feature ("EIDs");
#endif
#ifdef WAIT_ANY
scm_sysintern ("WAIT_ANY", SCM_MAKINUM (WAIT_ANY));
#endif
#ifdef WAIT_MYPGRP
scm_sysintern ("WAIT_MYPGRP", SCM_MAKINUM (WAIT_MYPGRP));
#endif
#ifdef WNOHANG
scm_sysintern ("WNOHANG", SCM_MAKINUM (WNOHANG));
#endif
#ifdef WUNTRACED
scm_sysintern ("WUNTRACED", SCM_MAKINUM (WUNTRACED));
#endif
/* access() symbols. */
scm_sysintern ("R_OK", SCM_MAKINUM (R_OK));
scm_sysintern ("W_OK", SCM_MAKINUM (W_OK));
scm_sysintern ("X_OK", SCM_MAKINUM (X_OK));
scm_sysintern ("F_OK", SCM_MAKINUM (F_OK));
#ifdef LC_COLLATE
scm_sysintern ("LC_COLLATE", SCM_MAKINUM (LC_COLLATE));
#endif
#ifdef LC_CTYPE
scm_sysintern ("LC_CTYPE", SCM_MAKINUM (LC_CTYPE));
#endif
#ifdef LC_MONETARY
scm_sysintern ("LC_MONETARY", SCM_MAKINUM (LC_MONETARY));
#endif
#ifdef LC_NUMERIC
scm_sysintern ("LC_NUMERIC", SCM_MAKINUM (LC_NUMERIC));
#endif
#ifdef LC_TIME
scm_sysintern ("LC_TIME", SCM_MAKINUM (LC_TIME));
#endif
#ifdef LC_MESSAGES
scm_sysintern ("LC_MESSAGES", SCM_MAKINUM (LC_MESSAGES));
#endif
#ifdef LC_ALL
scm_sysintern ("LC_ALL", SCM_MAKINUM (LC_ALL));
#endif
#include "cpp_sig_symbols.c"
#include "posix.x"
}
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