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authorTim Shimmin <tes@sgi.com>2006-06-09 14:55:38 +1000
committerNathan Scott <nathans@sgi.com>2006-06-09 14:55:38 +1000
commit6d192a9b82212abf1e0e89da6e3a952afba7e4d6 (patch)
tree608a463ba4fd04f518558ead3567952e757cd2ae /fs/xfs/xfs_extfree_item.h
parentd210a28cd851082cec9b282443f8cc0e6fc09830 (diff)
downloadlinux-6d192a9b82212abf1e0e89da6e3a952afba7e4d6.tar.bz2
[XFS] inode items and EFI/EFDs have different ondisk format for 32bit and
64bit kernels allow recovery to handle both versions and do the necessary decoding SGI-PV: 952214 SGI-Modid: xfs-linux-melb:xfs-kern:26011a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_extfree_item.h')
-rw-r--r--fs/xfs/xfs_extfree_item.h53
1 files changed, 52 insertions, 1 deletions
diff --git a/fs/xfs/xfs_extfree_item.h b/fs/xfs/xfs_extfree_item.h
index 5bf681708fec..0ea45edaab03 100644
--- a/fs/xfs/xfs_extfree_item.h
+++ b/fs/xfs/xfs_extfree_item.h
@@ -27,6 +27,24 @@ typedef struct xfs_extent {
} xfs_extent_t;
/*
+ * Since an xfs_extent_t has types (start:64, len: 32)
+ * there are different alignments on 32 bit and 64 bit kernels.
+ * So we provide the different variants for use by a
+ * conversion routine.
+ */
+
+typedef struct xfs_extent_32 {
+ xfs_dfsbno_t ext_start;
+ xfs_extlen_t ext_len;
+} __attribute__((packed)) xfs_extent_32_t;
+
+typedef struct xfs_extent_64 {
+ xfs_dfsbno_t ext_start;
+ xfs_extlen_t ext_len;
+ __uint32_t ext_pad;
+} xfs_extent_64_t;
+
+/*
* This is the structure used to lay out an efi log item in the
* log. The efi_extents field is a variable size array whose
* size is given by efi_nextents.
@@ -39,6 +57,22 @@ typedef struct xfs_efi_log_format {
xfs_extent_t efi_extents[1]; /* array of extents to free */
} xfs_efi_log_format_t;
+typedef struct xfs_efi_log_format_32 {
+ unsigned short efi_type; /* efi log item type */
+ unsigned short efi_size; /* size of this item */
+ uint efi_nextents; /* # extents to free */
+ __uint64_t efi_id; /* efi identifier */
+ xfs_extent_32_t efi_extents[1]; /* array of extents to free */
+} __attribute__((packed)) xfs_efi_log_format_32_t;
+
+typedef struct xfs_efi_log_format_64 {
+ unsigned short efi_type; /* efi log item type */
+ unsigned short efi_size; /* size of this item */
+ uint efi_nextents; /* # extents to free */
+ __uint64_t efi_id; /* efi identifier */
+ xfs_extent_64_t efi_extents[1]; /* array of extents to free */
+} xfs_efi_log_format_64_t;
+
/*
* This is the structure used to lay out an efd log item in the
* log. The efd_extents array is a variable size array whose
@@ -52,6 +86,22 @@ typedef struct xfs_efd_log_format {
xfs_extent_t efd_extents[1]; /* array of extents freed */
} xfs_efd_log_format_t;
+typedef struct xfs_efd_log_format_32 {
+ unsigned short efd_type; /* efd log item type */
+ unsigned short efd_size; /* size of this item */
+ uint efd_nextents; /* # of extents freed */
+ __uint64_t efd_efi_id; /* id of corresponding efi */
+ xfs_extent_32_t efd_extents[1]; /* array of extents freed */
+} __attribute__((packed)) xfs_efd_log_format_32_t;
+
+typedef struct xfs_efd_log_format_64 {
+ unsigned short efd_type; /* efd log item type */
+ unsigned short efd_size; /* size of this item */
+ uint efd_nextents; /* # of extents freed */
+ __uint64_t efd_efi_id; /* id of corresponding efi */
+ xfs_extent_64_t efd_extents[1]; /* array of extents freed */
+} xfs_efd_log_format_64_t;
+
#ifdef __KERNEL__
@@ -103,7 +153,8 @@ extern struct kmem_zone *xfs_efd_zone;
xfs_efi_log_item_t *xfs_efi_init(struct xfs_mount *, uint);
xfs_efd_log_item_t *xfs_efd_init(struct xfs_mount *, xfs_efi_log_item_t *,
uint);
-
+int xfs_efi_copy_format(xfs_log_iovec_t *buf,
+ xfs_efi_log_format_t *dst_efi_fmt);
void xfs_efi_item_free(xfs_efi_log_item_t *);
#endif /* __KERNEL__ */