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/* Copyright (C) 1994, 1995 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, 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of SCM.
*
* The exception is that, if you link the SCM 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 SCM 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 SCM. If you copy
* code from other Free Software Foundation releases into a copy of
* SCM, 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 SCM, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
/* "unix.c" functions only in Unix (unix).
Author: Aubrey Jaffer */
#include "scm.h"
#include <pwd.h>
#include <sys/types.h>
/* #include <sys/wait.h> */
#include <sys/stat.h>
extern SCM stat2scm P((struct stat *stat_temp));
SCM scm_mknod P((SCM path, SCM mode, SCM dev));
SCM scm_acct P((SCM path));
SCM scm_nice P((SCM incr));
SCM scm_sync P((void));
SCM scm_symlink P((SCM oldpath, SCM newpath));
SCM scm_readlink P((SCM path));
SCM scm_lstat P((SCM str));
#ifndef STDC_HEADERS
void sync P((void));
int symlink P((const char *oldpath, const char *newpath));
int readlink P((const char *path, char *buf, sizet bufsiz));
int acct P((const char *filename));
int nice P((int inc));
#else /* added by Denys Duchier: for acct, etc... */
# ifdef SVR4
# include <unistd.h>
# endif
# ifdef __OpenBSD__
# include <unistd.h>
# endif
#endif /* STDC_HEADERS */
/* Only the superuser can successfully execute mknod and acct */
/* int mknod P((const char *path, mode_t mode, dev_t dev));
should be in stat.h */
static char s_mknod[] = "mknod";
SCM scm_mknod(path, mode, dev)
SCM path, mode, dev;
{
int val;
ASSERT(NIMP(path) && STRINGP(path), path, ARG1, s_mknod);
ASSERT(INUMP(mode), mode, ARG2, s_mknod);
ASSERT(INUMP(dev), dev, ARG3, s_mknod);
SYSCALL(val = mknod(CHARS(path), INUM(mode), INUM(dev)););
return val ? BOOL_F : BOOL_T;
}
static char s_acct[] = "acct";
SCM scm_acct(path)
SCM path;
{
int val;
if FALSEP(path) {
SYSCALL(val = acct(0););
return val ? BOOL_F : BOOL_T;
}
ASSERT(NIMP(path) && STRINGP(path), path, ARG1, s_acct);
SYSCALL(val = acct(CHARS(path)););
return val ? BOOL_F : BOOL_T;
}
static char s_nice[] = "nice";
SCM scm_nice(incr)
SCM incr;
{
ASSERT(INUMP(incr), incr, ARG1, s_nice);
return nice(INUM(incr)) ? BOOL_F : BOOL_T;
}
SCM scm_sync()
{
sync();
return UNSPECIFIED;
}
static char s_symlink[] = "symlink";
SCM scm_symlink(oldpath, newpath)
SCM oldpath, newpath;
{
int val;
ASSERT(NIMP(oldpath) && STRINGP(oldpath), oldpath, ARG1, s_symlink);
ASSERT(NIMP(newpath) && STRINGP(newpath), newpath, ARG2, s_symlink);
SYSCALL(val = symlink(CHARS(oldpath), CHARS(newpath)););
return val ? BOOL_F : BOOL_T;
}
static char s_readlink[] = "readlink";
SCM scm_readlink(path)
SCM path;
{
int i;
char buf[1024];
ASSERT(NIMP(path) && STRINGP(path), path, ARG1, s_readlink);
SYSCALL(i = readlink(CHARS(path), buf, (sizet)sizeof(buf)););
if (-1==i) return BOOL_F;
return makfromstr(buf, (sizet)i);
}
static char s_lstat[] = "lstat";
SCM scm_lstat(str)
SCM str;
{
int i;
struct stat stat_temp;
ASSERT(NIMP(str) && STRINGP(str), str, ARG1, s_lstat);
SYSCALL(i = lstat(CHARS(str), &stat_temp););
if (i) return BOOL_F;
return stat2scm(&stat_temp);
}
static iproc subr1s[] = {
{s_nice, scm_nice},
{s_acct, scm_acct},
{s_lstat, scm_lstat},
{s_readlink, scm_readlink},
{0, 0}};
void init_unix()
{
make_subr("sync", tc7_subr_0, scm_sync);
init_iprocs(subr1s, tc7_subr_1);
make_subr(s_symlink, tc7_subr_2, scm_symlink);
make_subr(s_mknod, tc7_subr_3, scm_mknod);
add_feature("unix");
}
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