#define FS_XFLAG_COWEXTSIZE 0x00010000 /* CoW extent size allocator hint */
#endif
-#ifdef HAVE_GETFSMAP
-# include <linux/fsmap.h>
-#else
-/*
- * Structure for FS_IOC_GETFSMAP.
- *
- * The memory layout for this call are the scalar values defined in
- * struct fsmap_head, followed by two struct fsmap that describe
- * the lower and upper bound of mappings to return, followed by an
- * array of struct fsmap mappings.
- *
- * fmh_iflags control the output of the call, whereas fmh_oflags report
- * on the overall record output. fmh_count should be set to the
- * length of the fmh_recs array, and fmh_entries will be set to the
- * number of entries filled out during each call. If fmh_count is
- * zero, the number of reverse mappings will be returned in
- * fmh_entries, though no mappings will be returned. fmh_reserved
- * must be set to zero.
- *
- * The two elements in the fmh_keys array are used to constrain the
- * output. The first element in the array should represent the
- * lowest disk mapping ("low key") that the user wants to learn
- * about. If this value is all zeroes, the filesystem will return
- * the first entry it knows about. For a subsequent call, the
- * contents of fsmap_head.fmh_recs[fsmap_head.fmh_count - 1] should be
- * copied into fmh_keys[0] to have the kernel start where it left off.
- *
- * The second element in the fmh_keys array should represent the
- * highest disk mapping ("high key") that the user wants to learn
- * about. If this value is all ones, the filesystem will not stop
- * until it runs out of mapping to return or runs out of space in
- * fmh_recs.
- *
- * fmr_device can be either a 32-bit cookie representing a device, or
- * a 32-bit dev_t if the FMH_OF_DEV_T flag is set. fmr_physical,
- * fmr_offset, and fmr_length are expressed in units of bytes.
- * fmr_owner is either an inode number, or a special value if
- * FMR_OF_SPECIAL_OWNER is set in fmr_flags.
- */
-struct fsmap {
- __u32 fmr_device; /* device id */
- __u32 fmr_flags; /* mapping flags */
- __u64 fmr_physical; /* device offset of segment */
- __u64 fmr_owner; /* owner id */
- __u64 fmr_offset; /* file offset of segment */
- __u64 fmr_length; /* length of segment */
- __u64 fmr_reserved[3]; /* must be zero */
-};
-
-struct fsmap_head {
- __u32 fmh_iflags; /* control flags */
- __u32 fmh_oflags; /* output flags */
- __u32 fmh_count; /* # of entries in array incl. input */
- __u32 fmh_entries; /* # of entries filled in (output). */
- __u64 fmh_reserved[6]; /* must be zero */
-
- struct fsmap fmh_keys[2]; /* low and high keys for the mapping search */
- struct fsmap fmh_recs[]; /* returned records */
-};
-
-/* Size of an fsmap_head with room for nr records. */
-static inline size_t
-fsmap_sizeof(
- unsigned int nr)
-{
- return sizeof(struct fsmap_head) + nr * sizeof(struct fsmap);
-}
-
-/* Start the next fsmap query at the end of the current query results. */
-static inline void
-fsmap_advance(
- struct fsmap_head *head)
-{
- head->fmh_keys[0] = head->fmh_recs[head->fmh_entries - 1];
-}
-
-/* fmh_iflags values - set by XFS_IOC_GETFSMAP caller in the header. */
-/* no flags defined yet */
-#define FMH_IF_VALID 0
-
-/* fmh_oflags values - returned in the header segment only. */
-#define FMH_OF_DEV_T 0x1 /* fmr_device values will be dev_t */
-
-/* fmr_flags values - returned for each non-header segment */
-#define FMR_OF_PREALLOC 0x1 /* segment = unwritten pre-allocation */
-#define FMR_OF_ATTR_FORK 0x2 /* segment = attribute fork */
-#define FMR_OF_EXTENT_MAP 0x4 /* segment = extent map */
-#define FMR_OF_SHARED 0x8 /* segment = shared with another file */
-#define FMR_OF_SPECIAL_OWNER 0x10 /* owner is a special value */
-#define FMR_OF_LAST 0x20 /* segment is the last in the FS */
-
-/* Each FS gets to define its own special owner codes. */
-#define FMR_OWNER(type, code) (((__u64)type << 32) | \
- ((__u64)code & 0xFFFFFFFFULL))
-#define FMR_OWNER_TYPE(owner) ((__u32)((__u64)owner >> 32))
-#define FMR_OWNER_CODE(owner) ((__u32)(((__u64)owner & 0xFFFFFFFFULL)))
-#define FMR_OWN_FREE FMR_OWNER(0, 1) /* free space */
-#define FMR_OWN_UNKNOWN FMR_OWNER(0, 2) /* unknown owner */
-#define FMR_OWN_METADATA FMR_OWNER(0, 3) /* metadata */
-
-#define FS_IOC_GETFSMAP _IOWR('X', 59, struct fsmap_head)
-
-#define HAVE_GETFSMAP
-#endif /* HAVE_GETFSMAP */
-
#ifndef HAVE_MAP_SYNC
#define MAP_SYNC 0
#define MAP_SHARED_VALIDATE 0
projects / thirdparty / xfsprogs-dev.git / commitdiff
