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authorKay Sievers <kay@vrfy.org>2015-06-09 14:27:33 +0200
committerKay Sievers <kay@vrfy.org>2015-06-11 10:52:46 +0200
commita095315b3c31f7a419baceac82c26c3c5ac0cd12 (patch)
treea5a70cf5b5430c0a6873311437b8345d7071f249 /src/basic/conf-files.c
parent37c47e5e5b8e47dd886ed6e8355b1203082b4a3e (diff)
build-sys: split internal basic/ library from shared/
basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/
Diffstat (limited to 'src/basic/conf-files.c')
-rw-r--r--src/basic/conf-files.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/src/basic/conf-files.c b/src/basic/conf-files.c
new file mode 100644
index 0000000000..da8745b284
--- /dev/null
+++ b/src/basic/conf-files.c
@@ -0,0 +1,174 @@
+/*-*- 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 <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.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;
+ const char *dirpath;
+ int r;
+
+ assert(path);
+ assert(suffix);
+
+ dirpath = prefix_roota(root, path);
+
+ dir = opendir(dirpath);
+ if (!dir) {
+ if (errno == ENOENT)
+ return 0;
+ return -errno;
+ }
+
+ for (;;) {
+ struct dirent *de;
+ char *p;
+
+ 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) {
+ _cleanup_hashmap_free_ Hashmap *fh = NULL;
+ char **files, **p;
+ int r;
+
+ assert(strv);
+ assert(suffix);
+
+ /* This alters the dirs string array */
+ if (!path_strv_resolve_uniq(dirs, root))
+ return -ENOMEM;
+
+ fh = hashmap_new(&string_hash_ops);
+ if (!fh)
+ return -ENOMEM;
+
+ STRV_FOREACH(p, dirs) {
+ r = files_add(fh, root, *p, suffix);
+ if (r == -ENOMEM) {
+ return r;
+ } else if (r < 0)
+ log_debug_errno(r, "Failed to search for files in %s: %m",
+ *p);
+ }
+
+ files = hashmap_get_strv(fh);
+ if (files == NULL) {
+ return -ENOMEM;
+ }
+
+ qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp);
+ *strv = files;
+
+ 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);
+}
+
+int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) {
+ _cleanup_strv_free_ char **dirs = NULL;
+ va_list ap;
+
+ assert(strv);
+ assert(suffix);
+
+ va_start(ap, dir);
+ dirs = strv_new_ap(dir, ap);
+ va_end(ap);
+
+ if (!dirs)
+ return -ENOMEM;
+
+ return conf_files_list_strv_internal(strv, suffix, root, dirs);
+}
+
+int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) {
+ _cleanup_strv_free_ char **dirs = NULL;
+
+ assert(strv);
+ assert(suffix);
+
+ dirs = strv_split_nulstr(d);
+ if (!dirs)
+ return -ENOMEM;
+
+ return conf_files_list_strv_internal(strv, suffix, root, dirs);
+}