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1 /* Implementation of the SYMLNK intrinsic.
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2 Copyright (C) 2005-2020 Free Software Foundation, Inc.
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3 Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
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4
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5 This file is part of the GNU Fortran runtime library (libgfortran).
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6
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7 Libgfortran is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public
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9 License as published by the Free Software Foundation; either
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10 version 3 of the License, or (at your option) any later version.
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11
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12 Libgfortran is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 #include "libgfortran.h"
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27
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28 #include <errno.h>
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29
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30 #ifdef HAVE_UNISTD_H
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31 #include <unistd.h>
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32 #endif
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33
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34 /* SUBROUTINE SYMLNK(PATH1, PATH2, STATUS)
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35 CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2
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36 INTEGER, INTENT(OUT), OPTIONAL :: STATUS */
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37
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38 #ifdef HAVE_SYMLINK
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39 static int
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40 symlnk_internal (char *path1, char *path2, gfc_charlen_type path1_len,
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41 gfc_charlen_type path2_len)
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42 {
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43 char *str1 = fc_strdup (path1, path1_len);
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44 char *str2 = fc_strdup (path2, path2_len);
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45 int val = symlink (str1, str2);
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46 free (str1);
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47 free (str2);
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48 return ((val == 0) ? 0 : errno);
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49 }
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50
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51 extern void symlnk_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type,
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52 gfc_charlen_type);
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53 iexport_proto(symlnk_i4_sub);
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54
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55 void
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56 symlnk_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status,
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57 gfc_charlen_type path1_len, gfc_charlen_type path2_len)
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58 {
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59 int val = symlnk_internal (path1, path2, path1_len, path2_len);
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60 if (status != NULL)
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61 *status = val;
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62 }
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63 iexport(symlnk_i4_sub);
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64
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65 extern void symlnk_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type,
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66 gfc_charlen_type);
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67 iexport_proto(symlnk_i8_sub);
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68
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69 void
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70 symlnk_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status,
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71 gfc_charlen_type path1_len, gfc_charlen_type path2_len)
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72 {
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73 int val = symlnk_internal (path1, path2, path1_len, path2_len);
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74 if (status != NULL)
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75 *status = val;
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76 }
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77 iexport(symlnk_i8_sub);
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78
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79 extern GFC_INTEGER_4 symlnk_i4 (char *, char *, gfc_charlen_type,
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80 gfc_charlen_type);
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81 export_proto(symlnk_i4);
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82
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83 GFC_INTEGER_4
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84 symlnk_i4 (char *path1, char *path2, gfc_charlen_type path1_len,
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85 gfc_charlen_type path2_len)
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86 {
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87 return symlnk_internal (path1, path2, path1_len, path2_len);
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88 }
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89
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90 extern GFC_INTEGER_8 symlnk_i8 (char *, char *, gfc_charlen_type,
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91 gfc_charlen_type);
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92 export_proto(symlnk_i8);
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93
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94 GFC_INTEGER_8
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95 symlnk_i8 (char *path1, char *path2, gfc_charlen_type path1_len,
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96 gfc_charlen_type path2_len)
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97 {
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98 return symlnk_internal (path1, path2, path1_len, path2_len);
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99 }
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100 #endif
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