154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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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 <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include "macro.h"
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#include "util.h"
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#include "missing.h"
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#include "log.h"
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#include "strv.h"
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#include "path-util.h"
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#include "hashmap.h"
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#include "conf-files.h"
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static int files_add(Hashmap *h, const char *path, const char *suffix) {
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DIR *dir;
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int r = 0;
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dir = opendir(path);
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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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for (;;) {
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struct dirent *de;
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union dirent_storage buf;
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int k;
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char *p;
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k = readdir_r(dir, &buf.de, &de);
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if (k != 0) {
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r = -k;
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goto finish;
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}
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if (!de)
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break;
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if (!dirent_is_file_with_suffix(de, suffix))
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continue;
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if (asprintf(&p, "%s/%s", path, de->d_name) < 0) {
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r = -ENOMEM;
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goto finish;
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}
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if (hashmap_put(h, path_get_file_name(p), p) <= 0) {
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log_debug("Skip overridden file: %s.", p);
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free(p);
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}
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}
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finish:
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closedir(dir);
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return r;
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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(path_get_file_name(s1), path_get_file_name(s2));
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}
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int conf_files_list_strv(char ***strv, const char *suffix, const char **dirs) {
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Hashmap *fh = NULL;
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char **files = NULL;
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const char **p;
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int r;
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assert(dirs);
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fh = hashmap_new(string_hash_func, string_compare_func);
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if (!fh) {
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r = -ENOMEM;
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goto finish;
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}
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STRV_FOREACH(p, dirs) {
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r = files_add(fh, *p, suffix);
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if (r < 0)
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log_warning("Failed to search for files in %s: %s",
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*p, strerror(-r));
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}
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files = hashmap_get_strv(fh);
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if (files == NULL) {
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log_error("Failed to compose list of files.");
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r = -ENOMEM;
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goto finish;
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}
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qsort(files, hashmap_size(fh), sizeof(char *), base_cmp);
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r = 0;
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finish:
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hashmap_free(fh);
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*strv = files;
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return r;
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}
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int conf_files_list(char ***strv, const char *suffix, const char *dir, ...) {
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char **dirs = NULL;
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va_list ap;
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int r;
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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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r = -ENOMEM;
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goto finish;
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}
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if (!path_strv_canonicalize(dirs)) {
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r = -ENOMEM;
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goto finish;
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}
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strv_uniq(dirs);
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r = conf_files_list_strv(strv, suffix, (const char **)dirs);
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finish:
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strv_free(dirs);
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return r;
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}
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