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authorKay Sievers <kay.sievers@suse.de>2006-03-27 18:05:17 +0200
committerKay Sievers <kay.sievers@suse.de>2006-03-27 18:05:17 +0200
commit83cc6ab4760817509f1ed1ee429669e563f82caf (patch)
tree1d9ef7edcae7678f356c19e0b85c09f094576454 /extras/volume_id/lib/squashfs.c
parentb5e694267142042228a6cac99ecad6c4b4ef8759 (diff)
volume_id: rename subdirectory
Diffstat (limited to 'extras/volume_id/lib/squashfs.c')
-rw-r--r--extras/volume_id/lib/squashfs.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/extras/volume_id/lib/squashfs.c b/extras/volume_id/lib/squashfs.c
new file mode 100644
index 0000000000..bdb1f16628
--- /dev/null
+++ b/extras/volume_id/lib/squashfs.c
@@ -0,0 +1,52 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2006 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * 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 version 2 of the License.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "libvolume_id.h"
+#include "util.h"
+
+#define SQUASHFS_MAGIC 0x73717368
+
+struct squashfs_super {
+ uint32_t s_magic;
+} PACKED;
+
+int volume_id_probe_squashfs(struct volume_id *id, uint64_t off)
+{
+ struct squashfs_super *sqs;
+
+ dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+ sqs = (struct squashfs_super *) volume_id_get_buffer(id, off + 0x200, 0x200);
+ if (sqs == NULL)
+ return -1;
+
+ if (sqs->s_magic == SQUASHFS_MAGIC || sqs->s_magic == bswap_32(SQUASHFS_MAGIC)) {
+ volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+ id->type = "squashfs";
+ return 0;
+ }
+
+ return -1;
+}