split fs-state back into seperate tools

[project/fstools.git] / mount_root.c

diff --git a/mount_root.c b/mount_root.c
new file mode 100644 (file)
index 0000000..e281c0b
--- /dev/null
+++ b/mount_root.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * 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.
+ */
+
+#include <sys/mount.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "libfstools/libfstools.h"
+#include "libfstools/volume.h"
+
+static int
+start(int argc, char *argv[1])
+{
+       struct volume *v = volume_find("rootfs_data");
+
+       if (!getenv("PREINIT"))
+               return -1;
+
+       if (!v) {
+               v = volume_find("rootfs");
+               volume_init(v);
+               fprintf(stderr, "mounting /dev/root\n");
+               mount("/dev/root", "/", NULL, MS_NOATIME | MS_REMOUNT, 0);
+               return 0;
+       }
+
+       extroot_prefix = "";
+       if (!mount_extroot()) {
+               fprintf(stderr, "fs-state: switched to extroot\n");
+               return 0;
+       }
+
+       switch (volume_identify(v)) {
+       case FS_NONE:
+       case FS_DEADCODE:
+               return ramoverlay();
+
+       case FS_JFFS2:
+               mount_overlay();
+               break;
+
+       case FS_SNAPSHOT:
+               mount_snapshot();
+               break;
+       }
+
+       return 0;
+}
+
+static int
+stop(int argc, char *argv[1])
+{
+       if (!getenv("SHUTDOWN"))
+               return -1;
+
+       return 0;
+}
+
+static int
+done(int argc, char *argv[1])
+{
+       struct volume *v = volume_find("rootfs_data");
+
+       if (!v)
+               return -1;
+
+       switch (volume_identify(v)) {
+       case FS_NONE:
+       case FS_DEADCODE:
+               return jffs2_switch(argc, argv);
+       }
+
+       return 0;
+}
+
+int main(int argc, char **argv)
+{
+       if (argc < 2)
+               return start(argc, argv);
+       if (!strcmp(argv[1], "stop"))
+               return stop(argc, argv);
+       if (!strcmp(argv[1], "done"))
+               return done(argc, argv);
+       return -1;
+}