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a119fc1c | 1 | /* Implementation of the ACCESS intrinsic. |
a945c346 | 2 | Copyright (C) 2006-2024 Free Software Foundation, Inc. |
a119fc1c FXC |
3 | Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> |
4 | ||
581d2326 | 5 | This file is part of the GNU Fortran runtime library (libgfortran). |
a119fc1c FXC |
6 | |
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU General Public | |
9 | License as published by the Free Software Foundation; either | |
748086b7 | 10 | version 3 of the License, or (at your option) any later version. |
a119fc1c FXC |
11 | |
12 | Libgfortran is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
748086b7 JJ |
17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
a119fc1c | 25 | |
a119fc1c FXC |
26 | #include "libgfortran.h" |
27 | ||
28 | #include <errno.h> | |
36ae8a61 | 29 | |
a119fc1c FXC |
30 | #ifdef HAVE_UNISTD_H |
31 | #include <unistd.h> | |
32 | #endif | |
33 | ||
34 | /* INTEGER FUNCTION ACCESS(NAME, MODE) | |
35 | CHARACTER(len=*), INTENT(IN) :: NAME, MODE */ | |
36 | ||
37 | #ifdef HAVE_ACCESS | |
38 | extern int access_func (char *, char *, gfc_charlen_type, gfc_charlen_type); | |
39 | export_proto(access_func); | |
40 | ||
41 | int | |
42 | access_func (char *name, char *mode, gfc_charlen_type name_len, | |
43 | gfc_charlen_type mode_len) | |
44 | { | |
a119fc1c FXC |
45 | gfc_charlen_type i; |
46 | int m; | |
47 | ||
48 | /* Parse the MODE string. */ | |
49 | m = F_OK; | |
50 | for (i = 0; i < mode_len && mode[i]; i++) | |
51 | switch (mode[i]) | |
52 | { | |
53 | case ' ': | |
54 | break; | |
55 | ||
56 | case 'r': | |
57 | case 'R': | |
58 | m |= R_OK; | |
59 | break; | |
60 | ||
61 | case 'w': | |
62 | case 'W': | |
63 | m |= W_OK; | |
64 | break; | |
65 | ||
66 | case 'x': | |
67 | case 'X': | |
68 | m |= X_OK; | |
69 | break; | |
70 | ||
71 | default: | |
72 | return -1; | |
73 | break; | |
74 | } | |
75 | ||
581d2326 | 76 | char *path = fc_strdup (name, name_len); |
a119fc1c FXC |
77 | |
78 | /* And make the call to access(). */ | |
581d2326 JB |
79 | int res = (access (path, m) == 0 ? 0 : errno); |
80 | ||
81 | free (path); | |
82 | return res; | |
a119fc1c | 83 | } |
a119fc1c | 84 | #endif |