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/* Implementation of the CHMOD intrinsic.
Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran 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 3 of the License, or (at your option) any later version.
Libgfortran 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "libgfortran.h"
#include <errno.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
/* INTEGER FUNCTION ACCESS(NAME, MODE)
CHARACTER(len=*), INTENT(IN) :: NAME, MODE */
#if defined(HAVE_FORK) && defined(HAVE_EXECL) && defined(HAVE_WAIT)
extern int chmod_func (char *, char *, gfc_charlen_type, gfc_charlen_type);
export_proto(chmod_func);
int
chmod_func (char *name, char *mode, gfc_charlen_type name_len,
gfc_charlen_type mode_len)
{
char * file, * m;
pid_t pid;
int status;
/* Trim trailing spaces. */
while (name_len > 0 && name[name_len - 1] == ' ')
name_len--;
while (mode_len > 0 && mode[mode_len - 1] == ' ')
mode_len--;
/* Make a null terminated copy of the strings. */
file = gfc_alloca (name_len + 1);
memcpy (file, name, name_len);
file[name_len] = '\0';
m = gfc_alloca (mode_len + 1);
memcpy (m, mode, mode_len);
m[mode_len]= '\0';
/* Execute /bin/chmod. */
if ((pid = fork()) < 0)
return errno;
if (pid == 0)
{
/* Child process. */
execl ("/bin/chmod", "chmod", m, file, (char *) NULL);
return errno;
}
else
wait (&status);
if (WIFEXITED(status))
return WEXITSTATUS(status);
else
return -1;
}
extern void chmod_i4_sub (char *, char *, GFC_INTEGER_4 *,
gfc_charlen_type, gfc_charlen_type);
export_proto(chmod_i4_sub);
void
chmod_i4_sub (char *name, char *mode, GFC_INTEGER_4 * status,
gfc_charlen_type name_len, gfc_charlen_type mode_len)
{
int val;
val = chmod_func (name, mode, name_len, mode_len);
if (status)
*status = val;
}
extern void chmod_i8_sub (char *, char *, GFC_INTEGER_8 *,
gfc_charlen_type, gfc_charlen_type);
export_proto(chmod_i8_sub);
void
chmod_i8_sub (char *name, char *mode, GFC_INTEGER_8 * status,
gfc_charlen_type name_len, gfc_charlen_type mode_len)
{
int val;
val = chmod_func (name, mode, name_len, mode_len);
if (status)
*status = val;
}
#endif
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