121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/* Implementation of the CHMOD intrinsic.
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Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
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Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include <errno.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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/* INTEGER FUNCTION ACCESS(NAME, MODE)
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CHARACTER(len=*), INTENT(IN) :: NAME, MODE */
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#if defined(HAVE_FORK) && defined(HAVE_EXECL) && defined(HAVE_WAIT)
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extern int chmod_func (char *, char *, gfc_charlen_type, gfc_charlen_type);
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export_proto(chmod_func);
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int
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chmod_func (char *name, char *mode, gfc_charlen_type name_len,
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gfc_charlen_type mode_len)
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{
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char * file, * m;
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pid_t pid;
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int status;
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/* Trim trailing spaces. */
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while (name_len > 0 && name[name_len - 1] == ' ')
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name_len--;
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while (mode_len > 0 && mode[mode_len - 1] == ' ')
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mode_len--;
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/* Make a null terminated copy of the strings. */
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file = gfc_alloca (name_len + 1);
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memcpy (file, name, name_len);
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file[name_len] = '\0';
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m = gfc_alloca (mode_len + 1);
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memcpy (m, mode, mode_len);
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m[mode_len]= '\0';
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/* Execute /bin/chmod. */
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if ((pid = fork()) < 0)
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return errno;
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if (pid == 0)
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{
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/* Child process. */
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execl ("/bin/chmod", "chmod", m, file, (char *) NULL);
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return errno;
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}
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else
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wait (&status);
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if (WIFEXITED(status))
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return WEXITSTATUS(status);
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else
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return -1;
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}
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extern void chmod_i4_sub (char *, char *, GFC_INTEGER_4 *,
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gfc_charlen_type, gfc_charlen_type);
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export_proto(chmod_i4_sub);
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void
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chmod_i4_sub (char *name, char *mode, GFC_INTEGER_4 * status,
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gfc_charlen_type name_len, gfc_charlen_type mode_len)
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{
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int val;
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val = chmod_func (name, mode, name_len, mode_len);
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if (status)
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*status = val;
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}
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extern void chmod_i8_sub (char *, char *, GFC_INTEGER_8 *,
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gfc_charlen_type, gfc_charlen_type);
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export_proto(chmod_i8_sub);
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void
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chmod_i8_sub (char *name, char *mode, GFC_INTEGER_8 * status,
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gfc_charlen_type name_len, gfc_charlen_type mode_len)
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{
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int val;
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val = chmod_func (name, mode, name_len, mode_len);
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if (status)
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*status = val;
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}
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#endif
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