From 9fbe24d95ea36205a71195b378a163aa829dfe40 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 12 Aug 2013 20:49:25 +1000 Subject: xfs: split out EFI/EFD log item format definition The EFI/EFD item format definitions are shared with userspace. Split the out of header files that contain kernel only defintions to make it simple to shared them. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_log_format.h | 83 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) (limited to 'fs/xfs/xfs_log_format.h') diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h index 77a6024d118..d1e93d38bd3 100644 --- a/fs/xfs/xfs_log_format.h +++ b/fs/xfs/xfs_log_format.h @@ -461,4 +461,87 @@ xfs_blft_from_flags(struct xfs_buf_log_format *blf) return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; } +/* + * EFI/EFD log format definitions + */ +typedef struct xfs_extent { + xfs_dfsbno_t ext_start; + xfs_extlen_t ext_len; +} 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 { + __uint64_t ext_start; + __uint32_t ext_len; +} __attribute__((packed)) xfs_extent_32_t; + +typedef struct xfs_extent_64 { + __uint64_t ext_start; + __uint32_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. + */ +typedef struct xfs_efi_log_format { + __uint16_t efi_type; /* efi log item type */ + __uint16_t efi_size; /* size of this item */ + __uint32_t efi_nextents; /* # extents to free */ + __uint64_t efi_id; /* efi identifier */ + xfs_extent_t efi_extents[1]; /* array of extents to free */ +} xfs_efi_log_format_t; + +typedef struct xfs_efi_log_format_32 { + __uint16_t efi_type; /* efi log item type */ + __uint16_t efi_size; /* size of this item */ + __uint32_t 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 { + __uint16_t efi_type; /* efi log item type */ + __uint16_t efi_size; /* size of this item */ + __uint32_t 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 + * size is given by efd_nextents; + */ +typedef struct xfs_efd_log_format { + __uint16_t efd_type; /* efd log item type */ + __uint16_t efd_size; /* size of this item */ + __uint32_t efd_nextents; /* # of extents freed */ + __uint64_t efd_efi_id; /* id of corresponding efi */ + xfs_extent_t efd_extents[1]; /* array of extents freed */ +} xfs_efd_log_format_t; + +typedef struct xfs_efd_log_format_32 { + __uint16_t efd_type; /* efd log item type */ + __uint16_t efd_size; /* size of this item */ + __uint32_t 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 { + __uint16_t efd_type; /* efd log item type */ + __uint16_t efd_size; /* size of this item */ + __uint32_t 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; + #endif /* __XFS_LOG_FORMAT_H__ */ -- cgit v1.2.3-70-g09d2