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f77b6ca3 | 1 | /* Implementation of the LINK intrinsic. |
8d9254fc | 2 | Copyright (C) 2005-2020 Free Software Foundation, Inc. |
f77b6ca3 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). |
f77b6ca3 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. |
f77b6ca3 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/>. */ | |
f77b6ca3 | 25 | |
f77b6ca3 FXC |
26 | #include "libgfortran.h" |
27 | ||
28 | #include <errno.h> | |
36ae8a61 | 29 | |
f77b6ca3 FXC |
30 | #ifdef HAVE_UNISTD_H |
31 | #include <unistd.h> | |
32 | #endif | |
33 | ||
34 | /* SUBROUTINE LINK(PATH1, PATH2, STATUS) | |
35 | CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2 | |
36 | INTEGER, INTENT(OUT), OPTIONAL :: STATUS */ | |
37 | ||
38 | #ifdef HAVE_LINK | |
f77b6ca3 | 39 | |
581d2326 JB |
40 | static int |
41 | link_internal (char *path1, char *path2, gfc_charlen_type path1_len, | |
42 | gfc_charlen_type path2_len) | |
f77b6ca3 FXC |
43 | { |
44 | int val; | |
45 | char *str1, *str2; | |
46 | ||
f77b6ca3 | 47 | /* Make a null terminated copy of the strings. */ |
581d2326 JB |
48 | str1 = fc_strdup (path1, path1_len); |
49 | str2 = fc_strdup (path2, path2_len); | |
f77b6ca3 FXC |
50 | |
51 | val = link (str1, str2); | |
52 | ||
581d2326 JB |
53 | free (str1); |
54 | free (str2); | |
55 | ||
56 | return ((val == 0) ? 0 : errno); | |
57 | } | |
58 | ||
59 | ||
60 | extern void link_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type, | |
61 | gfc_charlen_type); | |
62 | iexport_proto(link_i4_sub); | |
63 | ||
64 | void | |
65 | link_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status, | |
66 | gfc_charlen_type path1_len, gfc_charlen_type path2_len) | |
67 | { | |
68 | int val = link_internal (path1, path2, path1_len, path2_len); | |
69 | ||
deeab820 | 70 | if (status != NULL) |
581d2326 | 71 | *status = val; |
f77b6ca3 FXC |
72 | } |
73 | iexport(link_i4_sub); | |
74 | ||
75 | extern void link_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type, | |
76 | gfc_charlen_type); | |
77 | iexport_proto(link_i8_sub); | |
78 | ||
79 | void | |
80 | link_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status, | |
81 | gfc_charlen_type path1_len, gfc_charlen_type path2_len) | |
82 | { | |
581d2326 | 83 | int val = link_internal (path1, path2, path1_len, path2_len); |
f77b6ca3 | 84 | |
deeab820 | 85 | if (status != NULL) |
581d2326 | 86 | *status = val; |
f77b6ca3 FXC |
87 | } |
88 | iexport(link_i8_sub); | |
89 | ||
90 | extern GFC_INTEGER_4 link_i4 (char *, char *, gfc_charlen_type, | |
91 | gfc_charlen_type); | |
92 | export_proto(link_i4); | |
93 | ||
94 | GFC_INTEGER_4 | |
95 | link_i4 (char *path1, char *path2, gfc_charlen_type path1_len, | |
96 | gfc_charlen_type path2_len) | |
97 | { | |
581d2326 | 98 | return link_internal (path1, path2, path1_len, path2_len); |
f77b6ca3 FXC |
99 | } |
100 | ||
101 | extern GFC_INTEGER_8 link_i8 (char *, char *, gfc_charlen_type, | |
102 | gfc_charlen_type); | |
103 | export_proto(link_i8); | |
104 | ||
105 | GFC_INTEGER_8 | |
106 | link_i8 (char *path1, char *path2, gfc_charlen_type path1_len, | |
107 | gfc_charlen_type path2_len) | |
108 | { | |
581d2326 | 109 | return link_internal (path1, path2, path1_len, path2_len); |
f77b6ca3 FXC |
110 | } |
111 | #endif |