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Diffstat (limited to 'shlibs/blkid/src/probers/ddf_raid.c')
-rw-r--r--shlibs/blkid/src/probers/ddf_raid.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/shlibs/blkid/src/probers/ddf_raid.c b/shlibs/blkid/src/probers/ddf_raid.c
new file mode 100644
index 00000000..41d6e123
--- /dev/null
+++ b/shlibs/blkid/src/probers/ddf_raid.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ *
+ * Inspired by libvolume_id by
+ * Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "blkidP.h"
+
+/* http://www.snia.org/standards/home */
+#define DDF_GUID_LENGTH 24
+#define DDF_REV_LENGTH 8
+
+struct ddf_header {
+ uint8_t signature[4];
+ uint32_t crc;
+ uint8_t guid[DDF_GUID_LENGTH];
+ uint8_t ddf_rev[DDF_REV_LENGTH];
+} __attribute__((packed));
+
+static int probe_ddf(blkid_probe pr, const struct blkid_idmag *mag)
+{
+ int hdrs[] = { 1, 257 };
+ int i;
+ struct ddf_header *ddf = NULL;
+ char version[DDF_REV_LENGTH + 1];
+
+ if (pr->size < 0x30000)
+ return -1;
+
+ for (i = 0; i < ARRAY_SIZE(hdrs); i++) {
+ uint64_t off = ((pr->size / 0x200) - hdrs[i]) * 0x200;
+
+ ddf = (struct ddf_header *) blkid_probe_get_buffer(pr,
+ off,
+ sizeof(struct ddf_header));
+ if (!ddf)
+ return -1;
+
+ if (memcmp(ddf->signature, "\x11\xde\x11\xde", 4) == 0 ||
+ memcmp(ddf->signature, "\xde\x11\xde\x11", 4) == 0)
+ break;
+ ddf = NULL;
+ }
+
+ if (!ddf)
+ return -1;
+
+ blkid_probe_strncpy_uuid(pr, ddf->guid, sizeof(ddf->guid));
+
+ memcpy(version, ddf->ddf_rev, sizeof(ddf->ddf_rev));
+ *(version + sizeof(ddf->ddf_rev)) = '\0';
+
+ if (blkid_probe_set_version(pr, version) != 0)
+ return -1;
+ return 0;
+}
+
+const struct blkid_idinfo ddfraid_idinfo = {
+ .name = "ddf_raid_member",
+ .usage = BLKID_USAGE_RAID,
+ .probefunc = probe_ddf,
+ .magics = BLKID_NONE_MAGIC
+};
+
+