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authorDavid Oberhollenzer <david.oberhollenzer@tele2.at>2018-09-16 15:38:45 +0200
committerDavid Oberhollenzer <david.oberhollenzer@tele2.at>2018-09-17 14:53:19 +0200
commit5cd5f48f765f00b81786c6f569314474a91a06b8 (patch)
treef7cbda4a0f09ebffd8efb71295914a22557cc2b8 /lib/cron/cronscan.c
parent481744a2ba4d9b795918d3bc0767321e05e10bbd (diff)
Add helper library for cron configuration
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Diffstat (limited to 'lib/cron/cronscan.c')
-rw-r--r--lib/cron/cronscan.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/cron/cronscan.c b/lib/cron/cronscan.c
new file mode 100644
index 0000000..e28fb03
--- /dev/null
+++ b/lib/cron/cronscan.c
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * Copyright (C) 2018 - David Oberhollenzer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+
+#include "crontab.h"
+
+int cronscan(const char *directory, crontab_t **list)
+{
+ struct dirent *ent;
+ int dfd, ret = 0;
+ crontab_t *cron;
+ DIR *dir;
+
+ dir = opendir(directory);
+ if (dir == NULL) {
+ perror(directory);
+ return -1;
+ }
+
+ dfd = dirfd(dir);
+ if (dfd < 0) {
+ perror(directory);
+ closedir(dir);
+ return -1;
+ }
+
+ for (;;) {
+ errno = 0;
+ ent = readdir(dir);
+
+ if (ent == NULL) {
+ if (errno != 0) {
+ perror(directory);
+ ret = -1;
+ }
+ break;
+ }
+
+ if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
+ continue;
+
+ cron = rdcron(dfd, ent->d_name);
+ if (cron == NULL) {
+ ret = -1;
+ continue;
+ }
+
+ cron->next = *list;
+ *list = cron;
+ }
+
+ closedir(dir);
+ return ret;
+}