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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 LP |
46 | assert(suffix); |
47 | ||
1d13f648 | 48 | dirpath = prefix_roota(root, path); |
cebed500 | 49 | |
cba2ef02 | 50 | dir = opendir(dirpath); |
2c21044f KS |
51 | if (!dir) { |
52 | if (errno == ENOENT) | |
53 | return 0; | |
54 | return -errno; | |
55 | } | |
56 | ||
31d5192d | 57 | FOREACH_DIRENT(de, dir, return -errno) { |
2c21044f KS |
58 | char *p; |
59 | ||
2c21044f KS |
60 | if (!dirent_is_file_with_suffix(de, suffix)) |
61 | continue; | |
62 | ||
fabe5c0e LP |
63 | p = strjoin(dirpath, "/", de->d_name, NULL); |
64 | if (!p) | |
e02caf30 | 65 | return -ENOMEM; |
2c21044f | 66 | |
2b6bf07d | 67 | r = hashmap_put(h, basename(p), p); |
fabe5c0e LP |
68 | if (r == -EEXIST) { |
69 | log_debug("Skipping overridden file: %s.", p); | |
70 | free(p); | |
71 | } else if (r < 0) { | |
72 | free(p); | |
73 | return r; | |
74 | } else if (r == 0) { | |
75 | log_debug("Duplicate file %s", p); | |
2c21044f KS |
76 | free(p); |
77 | } | |
78 | } | |
79 | ||
e02caf30 | 80 | return 0; |
2c21044f KS |
81 | } |
82 | ||
83 | static int base_cmp(const void *a, const void *b) { | |
84 | const char *s1, *s2; | |
85 | ||
86 | s1 = *(char * const *)a; | |
87 | s2 = *(char * const *)b; | |
2b6bf07d | 88 | return strcmp(basename(s1), basename(s2)); |
2c21044f KS |
89 | } |
90 | ||
fabe5c0e | 91 | static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) { |
e1d75803 | 92 | _cleanup_hashmap_free_ Hashmap *fh = NULL; |
fabe5c0e | 93 | char **files, **p; |
578ac060 | 94 | int r; |
2c21044f | 95 | |
fabe5c0e LP |
96 | assert(strv); |
97 | assert(suffix); | |
98 | ||
99 | /* This alters the dirs string array */ | |
7d8da2c9 | 100 | if (!path_strv_resolve_uniq(dirs, root)) |
fabe5c0e | 101 | return -ENOMEM; |
2c21044f | 102 | |
d5099efc | 103 | fh = hashmap_new(&string_hash_ops); |
fabe5c0e LP |
104 | if (!fh) |
105 | return -ENOMEM; | |
2c21044f KS |
106 | |
107 | STRV_FOREACH(p, dirs) { | |
cba2ef02 | 108 | r = files_add(fh, root, *p, suffix); |
31d5192d | 109 | if (r == -ENOMEM) |
fabe5c0e | 110 | return r; |
31d5192d LP |
111 | if (r < 0) |
112 | log_debug_errno(r, "Failed to search for files in %s, ignoring: %m", *p); | |
2c21044f KS |
113 | } |
114 | ||
115 | files = hashmap_get_strv(fh); | |
31d5192d | 116 | if (!files) |
fabe5c0e | 117 | return -ENOMEM; |
fabe5c0e | 118 | |
7ff7394d | 119 | qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp); |
fabe5c0e | 120 | *strv = files; |
2c21044f | 121 | |
fabe5c0e LP |
122 | return 0; |
123 | } | |
124 | ||
844ec79b | 125 | int conf_files_list_strv(char ***strv, const char *suffix, const char *root, const char* const* dirs) { |
fabe5c0e LP |
126 | _cleanup_strv_free_ char **copy = NULL; |
127 | ||
128 | assert(strv); | |
129 | assert(suffix); | |
130 | ||
131 | copy = strv_copy((char**) dirs); | |
132 | if (!copy) | |
133 | return -ENOMEM; | |
134 | ||
135 | return conf_files_list_strv_internal(strv, suffix, root, copy); | |
2c21044f KS |
136 | } |
137 | ||
7850b3b8 | 138 | int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) { |
8201ad81 LP |
139 | _cleanup_strv_free_ char **dirs = NULL; |
140 | va_list ap; | |
fabe5c0e LP |
141 | |
142 | assert(strv); | |
143 | assert(suffix); | |
2c21044f | 144 | |
8201ad81 LP |
145 | va_start(ap, dir); |
146 | dirs = strv_new_ap(dir, ap); | |
147 | va_end(ap); | |
148 | ||
149 | if (!dirs) | |
150 | return -ENOMEM; | |
fabe5c0e LP |
151 | |
152 | return conf_files_list_strv_internal(strv, suffix, root, dirs); | |
153 | } | |
2c21044f | 154 | |
fabe5c0e LP |
155 | int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) { |
156 | _cleanup_strv_free_ char **dirs = NULL; | |
157 | ||
158 | assert(strv); | |
159 | assert(suffix); | |
160 | ||
161 | dirs = strv_split_nulstr(d); | |
162 | if (!dirs) | |
163 | return -ENOMEM; | |
2c21044f | 164 | |
fabe5c0e | 165 | return conf_files_list_strv_internal(strv, suffix, root, dirs); |
2c21044f | 166 | } |