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2c21044f KS |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
07630cea | 20 | #include <dirent.h> |
2c21044f | 21 | #include <errno.h> |
11c3a366 | 22 | #include <stdarg.h> |
2c21044f | 23 | #include <stdio.h> |
07630cea LP |
24 | #include <stdlib.h> |
25 | #include <string.h> | |
2c21044f | 26 | |
3ffd4af2 | 27 | #include "conf-files.h" |
a0956174 | 28 | #include "dirent-util.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
07630cea LP |
30 | #include "hashmap.h" |
31 | #include "log.h" | |
2c21044f | 32 | #include "macro.h" |
2c21044f | 33 | #include "missing.h" |
9eb977db | 34 | #include "path-util.h" |
07630cea LP |
35 | #include "string-util.h" |
36 | #include "strv.h" | |
37 | #include "util.h" | |
2c21044f | 38 | |
cba2ef02 | 39 | static int files_add(Hashmap *h, const char *root, const char *path, const char *suffix) { |
fabe5c0e | 40 | _cleanup_closedir_ DIR *dir = NULL; |
1d13f648 | 41 | const char *dirpath; |
31d5192d | 42 | struct dirent *de; |
1d13f648 | 43 | int r; |
e02caf30 | 44 | |
cba2ef02 | 45 | assert(path); |
cebed500 | 46 | |
1d13f648 | 47 | dirpath = prefix_roota(root, path); |
cebed500 | 48 | |
cba2ef02 | 49 | dir = opendir(dirpath); |
2c21044f KS |
50 | if (!dir) { |
51 | if (errno == ENOENT) | |
52 | return 0; | |
53 | return -errno; | |
54 | } | |
55 | ||
31d5192d | 56 | FOREACH_DIRENT(de, dir, return -errno) { |
2c21044f KS |
57 | char *p; |
58 | ||
2c21044f KS |
59 | if (!dirent_is_file_with_suffix(de, suffix)) |
60 | continue; | |
61 | ||
605405c6 | 62 | p = strjoin(dirpath, "/", de->d_name); |
fabe5c0e | 63 | if (!p) |
e02caf30 | 64 | return -ENOMEM; |
2c21044f | 65 | |
2b6bf07d | 66 | r = hashmap_put(h, basename(p), p); |
fabe5c0e LP |
67 | if (r == -EEXIST) { |
68 | log_debug("Skipping overridden file: %s.", p); | |
69 | free(p); | |
70 | } else if (r < 0) { | |
71 | free(p); | |
72 | return r; | |
73 | } else if (r == 0) { | |
74 | log_debug("Duplicate file %s", p); | |
2c21044f KS |
75 | free(p); |
76 | } | |
77 | } | |
78 | ||
e02caf30 | 79 | return 0; |
2c21044f KS |
80 | } |
81 | ||
82 | static int base_cmp(const void *a, const void *b) { | |
83 | const char *s1, *s2; | |
84 | ||
85 | s1 = *(char * const *)a; | |
86 | s2 = *(char * const *)b; | |
2b6bf07d | 87 | return strcmp(basename(s1), basename(s2)); |
2c21044f KS |
88 | } |
89 | ||
fabe5c0e | 90 | static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) { |
e1d75803 | 91 | _cleanup_hashmap_free_ Hashmap *fh = NULL; |
fabe5c0e | 92 | char **files, **p; |
578ac060 | 93 | int r; |
2c21044f | 94 | |
fabe5c0e | 95 | assert(strv); |
fabe5c0e LP |
96 | |
97 | /* This alters the dirs string array */ | |
7d8da2c9 | 98 | if (!path_strv_resolve_uniq(dirs, root)) |
fabe5c0e | 99 | return -ENOMEM; |
2c21044f | 100 | |
d5099efc | 101 | fh = hashmap_new(&string_hash_ops); |
fabe5c0e LP |
102 | if (!fh) |
103 | return -ENOMEM; | |
2c21044f KS |
104 | |
105 | STRV_FOREACH(p, dirs) { | |
cba2ef02 | 106 | r = files_add(fh, root, *p, suffix); |
31d5192d | 107 | if (r == -ENOMEM) |
fabe5c0e | 108 | return r; |
31d5192d LP |
109 | if (r < 0) |
110 | log_debug_errno(r, "Failed to search for files in %s, ignoring: %m", *p); | |
2c21044f KS |
111 | } |
112 | ||
113 | files = hashmap_get_strv(fh); | |
31d5192d | 114 | if (!files) |
fabe5c0e | 115 | return -ENOMEM; |
fabe5c0e | 116 | |
7ff7394d | 117 | qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp); |
fabe5c0e | 118 | *strv = files; |
2c21044f | 119 | |
fabe5c0e LP |
120 | return 0; |
121 | } | |
122 | ||
844ec79b | 123 | int conf_files_list_strv(char ***strv, const char *suffix, const char *root, const char* const* dirs) { |
fabe5c0e LP |
124 | _cleanup_strv_free_ char **copy = NULL; |
125 | ||
126 | assert(strv); | |
fabe5c0e LP |
127 | |
128 | copy = strv_copy((char**) dirs); | |
129 | if (!copy) | |
130 | return -ENOMEM; | |
131 | ||
132 | return conf_files_list_strv_internal(strv, suffix, root, copy); | |
2c21044f KS |
133 | } |
134 | ||
7850b3b8 | 135 | int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) { |
8201ad81 LP |
136 | _cleanup_strv_free_ char **dirs = NULL; |
137 | va_list ap; | |
fabe5c0e LP |
138 | |
139 | assert(strv); | |
140 | assert(suffix); | |
2c21044f | 141 | |
8201ad81 LP |
142 | va_start(ap, dir); |
143 | dirs = strv_new_ap(dir, ap); | |
144 | va_end(ap); | |
145 | ||
146 | if (!dirs) | |
147 | return -ENOMEM; | |
fabe5c0e LP |
148 | |
149 | return conf_files_list_strv_internal(strv, suffix, root, dirs); | |
150 | } | |
2c21044f | 151 | |
fabe5c0e LP |
152 | int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) { |
153 | _cleanup_strv_free_ char **dirs = NULL; | |
154 | ||
155 | assert(strv); | |
156 | assert(suffix); | |
157 | ||
158 | dirs = strv_split_nulstr(d); | |
159 | if (!dirs) | |
160 | return -ENOMEM; | |
2c21044f | 161 | |
fabe5c0e | 162 | return conf_files_list_strv_internal(strv, suffix, root, dirs); |
2c21044f | 163 | } |