On 1/5/18 7:52 PM, Darrick J. Wong wrote:
> + * These routines provide a simple interface to query the block
> + * mappings of the fork of a given inode via GETBMAPX and call a
> + * function to iterate each mapping result.
> + */
> +
> +#define BMAP_NR 2048
> +
> +/* Iterate all the extent block mappings between the key and fork end. */
> +bool
> +xfs_iterate_filemaps(
> + struct scrub_ctx *ctx,
> + const char *descr,
> + int fd,
> + int whichfork,
> + struct xfs_bmap *key,
<coverity pass>
Ok key is an xfs_bmap:
/* inode fork block mapping */
struct xfs_bmap {
uint64_t bm_offset; /* file offset of segment in bytes */
uint64_t bm_physical; /* physical starting byte */
uint64_t bm_length; /* length of segment, bytes */
uint32_t bm_flags; /* output flags */
};
> + xfs_bmap_iter_fn fn,
> + void *arg)
> +{
> + struct fsxattr fsx;
> + struct getbmapx *map
map is a getbmapx ...
struct getbmapx {
__s64 bmv_offset; /* file offset of segment in blocks */
__s64 bmv_block; /* starting block (64-bit daddr_t) */
__s64 bmv_length; /* length of segment, blocks */
__s32 bmv_count; /* # of entries in array incl. 1st */
__s32 bmv_entries; /* # of entries filled in (output). */
__s32 bmv_iflags; /* input flags (1st structure) */
__s32 bmv_oflags; /* output flags (after 1st structure)*/
__s32 bmv_unused1; /* future use */
__s32 bmv_unused2; /* future use */
};
...
> +out:
> + memcpy(key, map, sizeof(struct getbmapx));
so I don't think that fits, right?
-Eric
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