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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/stat.h>
#include <dirent.h>
#include "macro.h"
#include "util.h"
#include "missing.h"
#include "log.h"
#include "strv.h"
#include "path-util.h"
#include "hashmap.h"
#include "conf-files.h"
static int files_add(Hashmap *h, const char *path, const char *suffix) {
DIR *dir;
int r = 0;
dir = opendir(path);
if (!dir) {
if (errno == ENOENT)
return 0;
return -errno;
}
for (;;) {
struct dirent *de;
union dirent_storage buf;
int k;
char *p;
k = readdir_r(dir, &buf.de, &de);
if (k != 0) {
r = -k;
goto finish;
}
if (!de)
break;
if (!dirent_is_file_with_suffix(de, suffix))
continue;
if (asprintf(&p, "%s/%s", path, de->d_name) < 0) {
r = -ENOMEM;
goto finish;
}
if (hashmap_put(h, path_get_file_name(p), p) <= 0) {
log_debug("Skip overridden file: %s.", p);
free(p);
}
}
finish:
closedir(dir);
return r;
}
static int base_cmp(const void *a, const void *b) {
const char *s1, *s2;
s1 = *(char * const *)a;
s2 = *(char * const *)b;
return strcmp(path_get_file_name(s1), path_get_file_name(s2));
}
int conf_files_list_strv(char ***strv, const char *suffix, const char **dirs) {
Hashmap *fh = NULL;
char **files = NULL;
const char **p;
int r;
assert(dirs);
fh = hashmap_new(string_hash_func, string_compare_func);
if (!fh) {
r = -ENOMEM;
goto finish;
}
STRV_FOREACH(p, dirs) {
r = files_add(fh, *p, suffix);
if (r < 0)
log_warning("Failed to search for files in %s: %s",
*p, strerror(-r));
}
files = hashmap_get_strv(fh);
if (files == NULL) {
log_error("Failed to compose list of files.");
r = -ENOMEM;
goto finish;
}
qsort(files, hashmap_size(fh), sizeof(char *), base_cmp);
r = 0;
finish:
hashmap_free(fh);
*strv = files;
return r;
}
int conf_files_list(char ***strv, const char *suffix, const char *dir, ...) {
char **dirs = NULL;
va_list ap;
int r;
va_start(ap, dir);
dirs = strv_new_ap(dir, ap);
va_end(ap);
if (!dirs) {
r = -ENOMEM;
goto finish;
}
if (!path_strv_canonicalize(dirs)) {
r = -ENOMEM;
goto finish;
}
strv_uniq(dirs);
r = conf_files_list_strv(strv, suffix, (const char **)dirs);
finish:
strv_free(dirs);
return r;
}
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