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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
commitcfe5e3905201349e9cf3f95d52ff4bd100bde37d (patch)
treed0baf160cbee3195249d095f85e52d20c21acf02 /libblkid/src/superblocks/nvidia_raid.c
parentInitial commit. (diff)
downloadutil-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.tar.xz
util-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.zip
Adding upstream version 2.39.3.upstream/2.39.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libblkid/src/superblocks/nvidia_raid.c')
-rw-r--r--libblkid/src/superblocks/nvidia_raid.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/libblkid/src/superblocks/nvidia_raid.c b/libblkid/src/superblocks/nvidia_raid.c
new file mode 100644
index 0000000..d930f72
--- /dev/null
+++ b/libblkid/src/superblocks/nvidia_raid.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * 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 "superblocks.h"
+
+struct nv_metadata {
+ uint8_t vendor[8];
+ uint32_t size;
+ uint32_t chksum;
+ uint16_t version;
+} __attribute__((packed));
+
+#define NVIDIA_SIGNATURE "NVIDIA "
+#define NVIDIA_SUPERBLOCK_SIZE 120
+
+
+static int nvraid_verify_checksum(blkid_probe pr, const struct nv_metadata *nv)
+{
+ uint32_t csum = le32_to_cpu(nv->chksum);
+ for (size_t i = 0; i < le32_to_cpu(nv->size); i++)
+ csum += le32_to_cpu(((uint32_t *) nv)[i]);
+ return blkid_probe_verify_csum(pr, csum, le32_to_cpu(nv->chksum));
+}
+
+static int probe_nvraid(blkid_probe pr,
+ const struct blkid_idmag *mag __attribute__((__unused__)))
+{
+ uint64_t off;
+ struct nv_metadata *nv;
+
+ if (pr->size < 0x10000)
+ return 1;
+ if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
+ return 1;
+
+ off = ((pr->size / 0x200) - 2) * 0x200;
+ nv = (struct nv_metadata *)
+ blkid_probe_get_buffer(pr,
+ off,
+ NVIDIA_SUPERBLOCK_SIZE);
+ if (!nv)
+ return errno ? -errno : 1;
+
+ if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0)
+ return 1;
+ if (le32_to_cpu(nv->size) * 4 != NVIDIA_SUPERBLOCK_SIZE)
+ return 1;
+ if (!nvraid_verify_checksum(pr, nv))
+ return 1;
+ if (blkid_probe_sprintf_version(pr, "%u", le16_to_cpu(nv->version)) != 0)
+ return 1;
+ if (blkid_probe_set_magic(pr, off, sizeof(nv->vendor),
+ (unsigned char *) nv->vendor))
+ return 1;
+ return 0;
+}
+
+const struct blkid_idinfo nvraid_idinfo = {
+ .name = "nvidia_raid_member",
+ .usage = BLKID_USAGE_RAID,
+ .probefunc = probe_nvraid,
+ .magics = BLKID_NONE_MAGIC
+};
+
+