diff options
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 868472b6b303..9f656791a338 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4764,6 +4764,28 @@ static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, return 0; } +/* + * The granularity of a CLONE operation. + */ +static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, + uint32_t *res) +{ + __be32 *p; + + dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); + *res = 0; + if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) { + print_overflow_msg(__func__, xdr); + return -EIO; + } + *res = be32_to_cpup(p); + bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; + } + return 0; +} + static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) { unsigned int savep; @@ -4798,6 +4820,9 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); if (status) goto xdr_error; + status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); + if (status) + goto xdr_error; status = verify_attr_len(xdr, savep, attrlen); xdr_error: |