| /* Implementation of the ACCESS intrinsic. |
| Copyright (C) 2006-2021 Free Software Foundation, Inc. |
| Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> |
| |
| This file is part of the GNU Fortran 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> |
| |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| /* INTEGER FUNCTION ACCESS(NAME, MODE) |
| CHARACTER(len=*), INTENT(IN) :: NAME, MODE */ |
| |
| #ifdef HAVE_ACCESS |
| extern int access_func (char *, char *, gfc_charlen_type, gfc_charlen_type); |
| export_proto(access_func); |
| |
| int |
| access_func (char *name, char *mode, gfc_charlen_type name_len, |
| gfc_charlen_type mode_len) |
| { |
| gfc_charlen_type i; |
| int m; |
| |
| /* Parse the MODE string. */ |
| m = F_OK; |
| for (i = 0; i < mode_len && mode[i]; i++) |
| switch (mode[i]) |
| { |
| case ' ': |
| break; |
| |
| case 'r': |
| case 'R': |
| m |= R_OK; |
| break; |
| |
| case 'w': |
| case 'W': |
| m |= W_OK; |
| break; |
| |
| case 'x': |
| case 'X': |
| m |= X_OK; |
| break; |
| |
| default: |
| return -1; |
| break; |
| } |
| |
| char *path = fc_strdup (name, name_len); |
| |
| /* And make the call to access(). */ |
| int res = (access (path, m) == 0 ? 0 : errno); |
| |
| free (path); |
| return res; |
| } |
| #endif |