1 files changed, 56 insertions, 0 deletions
diff --git a/cronscan.c b/cronscan.c
new file mode 100644
index 0000000..16ebb09
--- /dev/null
+++ b/cronscan.c
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: ISC */
+#include "gcrond.h"
+
+int cronscan(const char *directory, crontab_t **list)
+{
+	crontab_t *cron, *tail = NULL;
+	struct dirent *ent;
+	int dfd, ret = 0;
+	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)
+			continue;
+
+		if (tail == NULL) {
+			*list = cron;
+			tail = cron;
+		} else {
+			tail->next = cron;
+		}
+
+		while (tail->next != NULL)
+			tail = tail->next;
+	}
+
+	closedir(dir);
+	return ret;
+}