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authorAnthony G. Basile <blueness@gentoo.org>2014-08-05 19:22:24 -0400
committerAnthony G. Basile <blueness@gentoo.org>2014-08-05 19:22:24 -0400
commitb1ac60946d1625e14029ea9b7fa3aa4c06e0795f (patch)
tree28cdd75fec8c6c6a2cf69c9668add048c10370f8 /src/shared/conf-files.c
parent4b8733ffe9c0fe8e5a527186d323dab93e43fb37 (diff)
src/shared: refactor shared code
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Diffstat (limited to 'src/shared/conf-files.c')
-rw-r--r--src/shared/conf-files.c148
1 files changed, 148 insertions, 0 deletions
diff --git a/src/shared/conf-files.c b/src/shared/conf-files.c
new file mode 100644
index 0000000000..dc4f970313
--- /dev/null
+++ b/src/shared/conf-files.c
@@ -0,0 +1,148 @@
+/*-*- 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 *root, const char *path, const char *suffix) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ _cleanup_free_ char *dirpath = NULL;
+
+ if (asprintf(&dirpath, "%s%s", root ? root : "", path) < 0)
+ return -ENOMEM;
+
+ dir = opendir(dirpath);
+ if (!dir) {
+ if (errno == ENOENT)
+ return 0;
+ return -errno;
+ }
+
+ for (;;) {
+ struct dirent *de;
+ char *p;
+ int r;
+
+ errno = 0;
+ de = readdir(dir);
+ if (!de && errno != 0)
+ return -errno;
+
+ if (!de)
+ break;
+
+ if (!dirent_is_file_with_suffix(de, suffix))
+ continue;
+
+ p = strjoin(dirpath, "/", de->d_name, NULL);
+ if (!p)
+ return -ENOMEM;
+
+ r = hashmap_put(h, basename(p), p);
+ if (r == -EEXIST) {
+ log_debug("Skipping overridden file: %s.", p);
+ free(p);
+ } else if (r < 0) {
+ free(p);
+ return r;
+ } else if (r == 0) {
+ log_debug("Duplicate file %s", p);
+ free(p);
+ }
+ }
+
+ return 0;
+}
+
+static int base_cmp(const void *a, const void *b) {
+ const char *s1, *s2;
+
+ s1 = *(char * const *)a;
+ s2 = *(char * const *)b;
+ return strcmp(basename(s1), basename(s2));
+}
+
+static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) {
+ Hashmap *fh;
+ char **files, **p;
+ int r;
+
+ assert(strv);
+ assert(suffix);
+
+ /* This alters the dirs string array */
+ if (!path_strv_canonicalize_uniq(dirs))
+ return -ENOMEM;
+
+ fh = hashmap_new(string_hash_func, string_compare_func);
+ if (!fh)
+ return -ENOMEM;
+
+ STRV_FOREACH(p, dirs) {
+ r = files_add(fh, root, *p, suffix);
+ if (r == -ENOMEM) {
+ hashmap_free_free(fh);
+ return r;
+ } else if (r < 0)
+ log_debug("Failed to search for files in %s: %s",
+ *p, strerror(-r));
+ }
+
+ files = hashmap_get_strv(fh);
+ if (files == NULL) {
+ hashmap_free_free(fh);
+ return -ENOMEM;
+ }
+
+ qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp);
+ *strv = files;
+
+ hashmap_free(fh);
+ return 0;
+}
+
+int conf_files_list_strv(char ***strv, const char *suffix, const char *root, const char* const* dirs) {
+ _cleanup_strv_free_ char **copy = NULL;
+
+ assert(strv);
+ assert(suffix);
+
+ copy = strv_copy((char**) dirs);
+ if (!copy)
+ return -ENOMEM;
+
+ return conf_files_list_strv_internal(strv, suffix, root, copy);
+}