1 | /* On some systems, mkdir ("foo/", 0700) fails because of the trailing
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2 | slash. On those systems, this wrapper removes the trailing slash.
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3 |
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4 | Copyright (C) 2001, 2003, 2006, 2008-2022 Free Software Foundation, Inc.
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5 |
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6 | This file is free software: you can redistribute it and/or modify
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7 | it under the terms of the GNU Lesser General Public License as
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8 | published by the Free Software Foundation; either version 2.1 of the
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9 | License, or (at your option) any later version.
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10 |
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11 | This file is distributed in the hope that it will be useful,
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | GNU Lesser General Public License for more details.
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15 |
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16 | You should have received a copy of the GNU Lesser General Public License
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17 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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18 |
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19 | /* written by Jim Meyering */
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20 |
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21 | #include <config.h>
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22 |
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23 | /* Specification. */
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24 | #include <sys/stat.h>
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25 |
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26 | #include <errno.h>
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27 | #include <stdio.h>
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28 | #include <stdlib.h>
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29 | #include <string.h>
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30 |
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31 | #include "dirname.h"
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32 |
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33 | /* Disable the definition of mkdir to rpl_mkdir (from the <sys/stat.h>
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34 | substitute) in this file. Otherwise, we'd get an endless recursion. */
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35 | #undef mkdir
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36 |
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37 | /* mingw's _mkdir() function has 1 argument, but we pass 2 arguments.
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38 | Additionally, it declares _mkdir (and depending on compile flags, an
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39 | alias mkdir), only in the nonstandard includes <direct.h> and <io.h>,
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40 | which are included in the <sys/stat.h> override. */
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41 | #if defined _WIN32 && ! defined __CYGWIN__
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42 | # define mkdir(name,mode) _mkdir (name)
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43 | # define maybe_unused _GL_UNUSED
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44 | #else
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45 | # define maybe_unused /* empty */
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46 | #endif
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47 |
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48 | /* This function is required at least for NetBSD 1.5.2. */
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49 |
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50 | int
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51 | rpl_mkdir (char const *dir, maybe_unused mode_t mode)
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52 | {
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53 | int ret_val;
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54 | char *tmp_dir;
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55 | size_t len = strlen (dir);
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56 |
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57 | if (len && dir[len - 1] == '/')
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58 | {
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59 | tmp_dir = strdup (dir);
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60 | if (!tmp_dir)
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61 | {
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62 | /* Rather than rely on strdup-posix, we set errno ourselves. */
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63 | errno = ENOMEM;
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64 | return -1;
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65 | }
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66 | strip_trailing_slashes (tmp_dir);
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67 | }
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68 | else
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69 | {
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70 | tmp_dir = (char *) dir;
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71 | }
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72 | #if FUNC_MKDIR_DOT_BUG
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73 | /* Additionally, cygwin 1.5 mistakenly creates a directory "d/./". */
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74 | {
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75 | char *last = last_component (tmp_dir);
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76 | if (*last == '.' && (last[1] == '\0'
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77 | || (last[1] == '.' && last[2] == '\0')))
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78 | {
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79 | struct stat st;
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80 | if (stat (tmp_dir, &st) == 0 || errno == EOVERFLOW)
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81 | errno = EEXIST;
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82 | return -1;
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83 | }
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84 | }
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85 | #endif /* FUNC_MKDIR_DOT_BUG */
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86 |
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87 | ret_val = mkdir (tmp_dir, mode);
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88 |
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89 | if (tmp_dir != dir)
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90 | free (tmp_dir);
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91 |
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92 | return ret_val;
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93 | }
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