1 /* Implementation of the SYMLNK intrinsic.
2 Copyright (C) 2005-2019 Free Software Foundation, Inc.
3 Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
4
5 This file is part of the GNU Fortran runtime library (libgfortran).
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
10 version 3 of the License, or (at your option) any later version.
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
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/>. */
25
26 #include "libgfortran.h"
27
28 #include <errno.h>
29
30 #ifdef HAVE_UNISTD_H
31 #include <unistd.h>
32 #endif
33
34 /* SUBROUTINE SYMLNK(PATH1, PATH2, STATUS)
35 CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2
36 INTEGER, INTENT(OUT), OPTIONAL :: STATUS */
37
38 #ifdef HAVE_SYMLINK
39 static int
symlnk_internal(char * path1,char * path2,gfc_charlen_type path1_len,gfc_charlen_type path2_len)40 symlnk_internal (char *path1, char *path2, gfc_charlen_type path1_len,
41 gfc_charlen_type path2_len)
42 {
43 char *str1 = fc_strdup (path1, path1_len);
44 char *str2 = fc_strdup (path2, path2_len);
45 int val = symlink (str1, str2);
46 free (str1);
47 free (str2);
48 return ((val == 0) ? 0 : errno);
49 }
50
51 extern void symlnk_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type,
52 gfc_charlen_type);
53 iexport_proto(symlnk_i4_sub);
54
55 void
symlnk_i4_sub(char * path1,char * path2,GFC_INTEGER_4 * status,gfc_charlen_type path1_len,gfc_charlen_type path2_len)56 symlnk_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status,
57 gfc_charlen_type path1_len, gfc_charlen_type path2_len)
58 {
59 int val = symlnk_internal (path1, path2, path1_len, path2_len);
60 if (status != NULL)
61 *status = val;
62 }
63 iexport(symlnk_i4_sub);
64
65 extern void symlnk_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type,
66 gfc_charlen_type);
67 iexport_proto(symlnk_i8_sub);
68
69 void
symlnk_i8_sub(char * path1,char * path2,GFC_INTEGER_8 * status,gfc_charlen_type path1_len,gfc_charlen_type path2_len)70 symlnk_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status,
71 gfc_charlen_type path1_len, gfc_charlen_type path2_len)
72 {
73 int val = symlnk_internal (path1, path2, path1_len, path2_len);
74 if (status != NULL)
75 *status = val;
76 }
77 iexport(symlnk_i8_sub);
78
79 extern GFC_INTEGER_4 symlnk_i4 (char *, char *, gfc_charlen_type,
80 gfc_charlen_type);
81 export_proto(symlnk_i4);
82
83 GFC_INTEGER_4
symlnk_i4(char * path1,char * path2,gfc_charlen_type path1_len,gfc_charlen_type path2_len)84 symlnk_i4 (char *path1, char *path2, gfc_charlen_type path1_len,
85 gfc_charlen_type path2_len)
86 {
87 return symlnk_internal (path1, path2, path1_len, path2_len);
88 }
89
90 extern GFC_INTEGER_8 symlnk_i8 (char *, char *, gfc_charlen_type,
91 gfc_charlen_type);
92 export_proto(symlnk_i8);
93
94 GFC_INTEGER_8
symlnk_i8(char * path1,char * path2,gfc_charlen_type path1_len,gfc_charlen_type path2_len)95 symlnk_i8 (char *path1, char *path2, gfc_charlen_type path1_len,
96 gfc_charlen_type path2_len)
97 {
98 return symlnk_internal (path1, path2, path1_len, path2_len);
99 }
100 #endif
101