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-rw-r--r--magic/Magdir/zfs96
1 files changed, 96 insertions, 0 deletions
diff --git a/magic/Magdir/zfs b/magic/Magdir/zfs
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+#------------------------------------------------------------------------------
+# zfs: file(1) magic for ZFS dumps
+#
+# From <rea-fbsd@codelabs.ru>
+# ZFS dump header has the following structure (as per zfs_ioctl.h
+# in FreeBSD with drr_type is set to DRR_BEGIN)
+#
+# enum {
+# DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
+# DRR_WRITE, DRR_FREE, DRR_END,
+# } drr_type;
+# uint32_t drr_pad;
+# uint64_t drr_magic;
+# uint64_t drr_version;
+# uint64_t drr_creation_time;
+# dmu_objset_type_t drr_type;
+# uint32_t drr_pad;
+# uint64_t drr_toguid;
+# uint64_t drr_fromguid;
+# char drr_toname[MAXNAMELEN];
+#
+# Backup magic is 0x00000002f5bacbac (quad word)
+# The drr_type is defined as
+# typedef enum dmu_objset_type {
+# DMU_OST_NONE,
+# DMU_OST_META,
+# DMU_OST_ZFS,
+# DMU_OST_ZVOL,
+# DMU_OST_OTHER, /* For testing only! */
+# DMU_OST_ANY, /* Be careful! */
+# DMU_OST_NUMTYPES
+# } dmu_objset_type_t;
+#
+# Almost all uint64_t fields are printed as the 32-bit ones (with high
+# 32 bits zeroed), because there is no simple way to print them as the
+# full 64-bit values.
+
+# Big-endian values
+8 string \000\000\000\002\365\272\313\254 ZFS snapshot (big-endian machine),
+>20 belong x version %u,
+>32 belong 0 type: NONE,
+>32 belong 1 type: META,
+>32 belong 2 type: ZFS,
+>32 belong 3 type: ZVOL,
+>32 belong 4 type: OTHER,
+>32 belong 5 type: ANY,
+>32 belong >5 type: UNKNOWN (%u),
+>40 byte x destination GUID: %02X
+>41 byte x %02X
+>42 byte x %02X
+>43 byte x %02X
+>44 byte x %02X
+>45 byte x %02X
+>46 byte x %02X
+>47 byte x %02X,
+>48 ulong >0
+>>52 ulong >0
+>>>48 byte x source GUID: %02X
+>>>49 byte x %02X
+>>>50 byte x %02X
+>>>51 byte x %02X
+>>>52 byte x %02X
+>>>53 byte x %02X
+>>>54 byte x %02X
+>>>55 byte x %02X,
+>56 string >\0 name: '%s'
+
+# Little-endian values
+8 string \254\313\272\365\002\000\000\000 ZFS snapshot (little-endian machine),
+>16 lelong x version %u,
+>32 lelong 0 type: NONE,
+>32 lelong 1 type: META,
+>32 lelong 2 type: ZFS,
+>32 lelong 3 type: ZVOL,
+>32 lelong 4 type: OTHER,
+>32 lelong 5 type: ANY,
+>32 lelong >5 type: UNKNOWN (%u),
+>47 byte x destination GUID: %02X
+>46 byte x %02X
+>45 byte x %02X
+>44 byte x %02X
+>43 byte x %02X
+>42 byte x %02X
+>41 byte x %02X
+>40 byte x %02X,
+>48 ulong >0
+>>52 ulong >0
+>>>55 byte x source GUID: %02X
+>>>54 byte x %02X
+>>>53 byte x %02X
+>>>52 byte x %02X
+>>>51 byte x %02X
+>>>50 byte x %02X
+>>>49 byte x %02X
+>>>48 byte x %02X,
+>56 string >\0 name: '%s'