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Commit 96928206 authored by J. Bruce Fields's avatar J. Bruce Fields Committed by Trond Myklebust
Browse files

[PATCH] NFSv4: fix fattr size calculations 



 Make nfs4 fattr size calculations more explicit, revising them downward a
 bit in the process.

 Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
 Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 6b3b5496

fs/nfs/nfs4xdr.c

+11 −7
Original line number Diff line number Diff line
@@ -83,12 +83,16 @@ static int nfs_stat_to_errno(int); 
#define encode_getfh_maxsz      (op_encode_hdr_maxsz)

#define decode_getfh_maxsz      (op_decode_hdr_maxsz + 1 + \

				((3+NFS4_FHSIZE) >> 2))

#define encode_getattr_maxsz    (op_encode_hdr_maxsz + 3)

#define nfs4_fattr_bitmap_maxsz 3

#define encode_getattr_maxsz    (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)

#define nfs4_name_maxsz		(1 + ((3 + NFS4_MAXNAMLEN) >> 2))

#define nfs4_path_maxsz		(1 + ((3 + NFS4_MAXPATHLEN) >> 2))

#define nfs4_fattr_bitmap_maxsz (36 + 2 * nfs4_name_maxsz)

#define decode_getattr_maxsz    (op_decode_hdr_maxsz + 3 + \

                                nfs4_fattr_bitmap_maxsz)

/* This is based on getfattr, which uses the most attributes: */

#define nfs4_fattr_value_maxsz	(1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \

				3 + 3 + 3 + 2 * nfs4_name_maxsz))

#define nfs4_fattr_maxsz	(nfs4_fattr_bitmap_maxsz + \

				nfs4_fattr_value_maxsz)

#define decode_getattr_maxsz    (op_decode_hdr_maxsz + nfs4_fattr_maxsz)

#define encode_savefh_maxsz     (op_encode_hdr_maxsz)

#define decode_savefh_maxsz     (op_decode_hdr_maxsz)

#define encode_fsinfo_maxsz	(op_encode_hdr_maxsz + 2)
@@ -123,11 +127,11 @@ static int nfs_stat_to_errno(int); 
#define encode_symlink_maxsz	(op_encode_hdr_maxsz + \

				1 + nfs4_name_maxsz + \

				nfs4_path_maxsz + \

				nfs4_fattr_bitmap_maxsz)

				nfs4_fattr_maxsz)

#define decode_symlink_maxsz	(op_decode_hdr_maxsz + 8)

#define encode_create_maxsz	(op_encode_hdr_maxsz + \

				2 + nfs4_name_maxsz + \

				nfs4_fattr_bitmap_maxsz)

				nfs4_fattr_maxsz)

#define decode_create_maxsz	(op_decode_hdr_maxsz + 8)

#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)

#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
@@ -206,7 +210,7 @@ static int nfs_stat_to_errno(int); 
#define NFS4_enc_setattr_sz     (compound_encode_hdr_maxsz + \

                                encode_putfh_maxsz + \

                                op_encode_hdr_maxsz + 4 + \

                                nfs4_fattr_bitmap_maxsz + \

                                nfs4_fattr_maxsz + \

                                encode_getattr_maxsz)

#define NFS4_dec_setattr_sz     (compound_decode_hdr_maxsz + \

                                decode_putfh_maxsz + \