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2c21044f KS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
07630cea | 22 | #include <dirent.h> |
2c21044f | 23 | #include <errno.h> |
2c21044f | 24 | #include <stdio.h> |
07630cea LP |
25 | #include <stdlib.h> |
26 | #include <string.h> | |
2c21044f | 27 | |
07630cea LP |
28 | #include "hashmap.h" |
29 | #include "log.h" | |
2c21044f | 30 | #include "macro.h" |
2c21044f | 31 | #include "missing.h" |
9eb977db | 32 | #include "path-util.h" |
07630cea LP |
33 | #include "string-util.h" |
34 | #include "strv.h" | |
35 | #include "util.h" | |
2c21044f KS |
36 | #include "conf-files.h" |
37 | ||
cba2ef02 | 38 | static int files_add(Hashmap *h, const char *root, const char *path, const char *suffix) { |
fabe5c0e | 39 | _cleanup_closedir_ DIR *dir = NULL; |
1d13f648 LP |
40 | const char *dirpath; |
41 | int r; | |
e02caf30 | 42 | |
cba2ef02 | 43 | assert(path); |
cebed500 LP |
44 | assert(suffix); |
45 | ||
1d13f648 | 46 | dirpath = prefix_roota(root, path); |
cebed500 | 47 | |
cba2ef02 | 48 | dir = opendir(dirpath); |
2c21044f KS |
49 | if (!dir) { |
50 | if (errno == ENOENT) | |
51 | return 0; | |
52 | return -errno; | |
53 | } | |
54 | ||
55 | for (;;) { | |
7d5e9c0f | 56 | struct dirent *de; |
2c21044f KS |
57 | char *p; |
58 | ||
a2be63f9 FW |
59 | errno = 0; |
60 | de = readdir(dir); | |
61 | if (!de && errno != 0) | |
62 | return -errno; | |
2c21044f KS |
63 | |
64 | if (!de) | |
65 | break; | |
66 | ||
67 | if (!dirent_is_file_with_suffix(de, suffix)) | |
68 | continue; | |
69 | ||
fabe5c0e LP |
70 | p = strjoin(dirpath, "/", de->d_name, NULL); |
71 | if (!p) | |
e02caf30 | 72 | return -ENOMEM; |
2c21044f | 73 | |
2b6bf07d | 74 | r = hashmap_put(h, basename(p), p); |
fabe5c0e LP |
75 | if (r == -EEXIST) { |
76 | log_debug("Skipping overridden file: %s.", p); | |
77 | free(p); | |
78 | } else if (r < 0) { | |
79 | free(p); | |
80 | return r; | |
81 | } else if (r == 0) { | |
82 | log_debug("Duplicate file %s", p); | |
2c21044f KS |
83 | free(p); |
84 | } | |
85 | } | |
86 | ||
e02caf30 | 87 | return 0; |
2c21044f KS |
88 | } |
89 | ||
90 | static int base_cmp(const void *a, const void *b) { | |
91 | const char *s1, *s2; | |
92 | ||
93 | s1 = *(char * const *)a; | |
94 | s2 = *(char * const *)b; | |
2b6bf07d | 95 | return strcmp(basename(s1), basename(s2)); |
2c21044f KS |
96 | } |
97 | ||
fabe5c0e | 98 | static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) { |
e1d75803 | 99 | _cleanup_hashmap_free_ Hashmap *fh = NULL; |
fabe5c0e | 100 | char **files, **p; |
578ac060 | 101 | int r; |
2c21044f | 102 | |
fabe5c0e LP |
103 | assert(strv); |
104 | assert(suffix); | |
105 | ||
106 | /* This alters the dirs string array */ | |
7d8da2c9 | 107 | if (!path_strv_resolve_uniq(dirs, root)) |
fabe5c0e | 108 | return -ENOMEM; |
2c21044f | 109 | |
d5099efc | 110 | fh = hashmap_new(&string_hash_ops); |
fabe5c0e LP |
111 | if (!fh) |
112 | return -ENOMEM; | |
2c21044f KS |
113 | |
114 | STRV_FOREACH(p, dirs) { | |
cba2ef02 | 115 | r = files_add(fh, root, *p, suffix); |
fabe5c0e | 116 | if (r == -ENOMEM) { |
fabe5c0e LP |
117 | return r; |
118 | } else if (r < 0) | |
c33b3297 MS |
119 | log_debug_errno(r, "Failed to search for files in %s: %m", |
120 | *p); | |
2c21044f KS |
121 | } |
122 | ||
123 | files = hashmap_get_strv(fh); | |
124 | if (files == NULL) { | |
fabe5c0e | 125 | return -ENOMEM; |
2c21044f | 126 | } |
fabe5c0e | 127 | |
7ff7394d | 128 | qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp); |
fabe5c0e | 129 | *strv = files; |
2c21044f | 130 | |
fabe5c0e LP |
131 | return 0; |
132 | } | |
133 | ||
844ec79b | 134 | int conf_files_list_strv(char ***strv, const char *suffix, const char *root, const char* const* dirs) { |
fabe5c0e LP |
135 | _cleanup_strv_free_ char **copy = NULL; |
136 | ||
137 | assert(strv); | |
138 | assert(suffix); | |
139 | ||
140 | copy = strv_copy((char**) dirs); | |
141 | if (!copy) | |
142 | return -ENOMEM; | |
143 | ||
144 | return conf_files_list_strv_internal(strv, suffix, root, copy); | |
2c21044f KS |
145 | } |
146 | ||
7850b3b8 | 147 | int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) { |
8201ad81 LP |
148 | _cleanup_strv_free_ char **dirs = NULL; |
149 | va_list ap; | |
fabe5c0e LP |
150 | |
151 | assert(strv); | |
152 | assert(suffix); | |
2c21044f | 153 | |
8201ad81 LP |
154 | va_start(ap, dir); |
155 | dirs = strv_new_ap(dir, ap); | |
156 | va_end(ap); | |
157 | ||
158 | if (!dirs) | |
159 | return -ENOMEM; | |
fabe5c0e LP |
160 | |
161 | return conf_files_list_strv_internal(strv, suffix, root, dirs); | |
162 | } | |
2c21044f | 163 | |
fabe5c0e LP |
164 | int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) { |
165 | _cleanup_strv_free_ char **dirs = NULL; | |
166 | ||
167 | assert(strv); | |
168 | assert(suffix); | |
169 | ||
170 | dirs = strv_split_nulstr(d); | |
171 | if (!dirs) | |
172 | return -ENOMEM; | |
2c21044f | 173 | |
fabe5c0e | 174 | return conf_files_list_strv_internal(strv, suffix, root, dirs); |
2c21044f | 175 | } |