167 lines
4.5 KiB
C
167 lines
4.5 KiB
C
/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <dirent.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "conf-files.h"
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#include "dirent-util.h"
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#include "fd-util.h"
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#include "hashmap.h"
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#include "log.h"
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#include "macro.h"
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#include "missing.h"
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#include "path-util.h"
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#include "string-util.h"
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#include "strv.h"
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#include "util.h"
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static int files_add(Hashmap *h, const char *root, const char *path, const char *suffix) {
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_cleanup_closedir_ DIR *dir = NULL;
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const char *dirpath;
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struct dirent *de;
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int r;
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assert(path);
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assert(suffix);
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dirpath = prefix_roota(root, path);
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dir = opendir(dirpath);
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if (!dir) {
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if (errno == ENOENT)
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return 0;
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return -errno;
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}
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FOREACH_DIRENT(de, dir, return -errno) {
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char *p;
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if (!dirent_is_file_with_suffix(de, suffix))
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continue;
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p = strjoin(dirpath, "/", de->d_name);
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if (!p)
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return -ENOMEM;
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r = hashmap_put(h, basename(p), p);
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if (r == -EEXIST) {
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log_debug("Skipping overridden file: %s.", p);
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free(p);
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} else if (r < 0) {
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free(p);
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return r;
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} else if (r == 0) {
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log_debug("Duplicate file %s", p);
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free(p);
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}
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}
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return 0;
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}
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static int base_cmp(const void *a, const void *b) {
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const char *s1, *s2;
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s1 = *(char * const *)a;
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s2 = *(char * const *)b;
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return strcmp(basename(s1), basename(s2));
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}
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static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) {
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_cleanup_hashmap_free_ Hashmap *fh = NULL;
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char **files, **p;
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int r;
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assert(strv);
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assert(suffix);
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/* This alters the dirs string array */
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if (!path_strv_resolve_uniq(dirs, root))
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return -ENOMEM;
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fh = hashmap_new(&string_hash_ops);
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if (!fh)
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return -ENOMEM;
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STRV_FOREACH(p, dirs) {
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r = files_add(fh, root, *p, suffix);
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if (r == -ENOMEM)
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return r;
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if (r < 0)
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log_debug_errno(r, "Failed to search for files in %s, ignoring: %m", *p);
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}
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files = hashmap_get_strv(fh);
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if (!files)
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return -ENOMEM;
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qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp);
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*strv = files;
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return 0;
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}
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int conf_files_list_strv(char ***strv, const char *suffix, const char *root, const char* const* dirs) {
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_cleanup_strv_free_ char **copy = NULL;
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assert(strv);
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assert(suffix);
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copy = strv_copy((char**) dirs);
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if (!copy)
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return -ENOMEM;
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return conf_files_list_strv_internal(strv, suffix, root, copy);
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}
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int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) {
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_cleanup_strv_free_ char **dirs = NULL;
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va_list ap;
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assert(strv);
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assert(suffix);
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va_start(ap, dir);
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dirs = strv_new_ap(dir, ap);
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va_end(ap);
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if (!dirs)
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return -ENOMEM;
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return conf_files_list_strv_internal(strv, suffix, root, dirs);
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}
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int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) {
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_cleanup_strv_free_ char **dirs = NULL;
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assert(strv);
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assert(suffix);
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dirs = strv_split_nulstr(d);
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if (!dirs)
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return -ENOMEM;
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return conf_files_list_strv_internal(strv, suffix, root, dirs);
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}
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