From 4882ef72cd9a5c006087ca94a228323018eac29f Mon Sep 17 00:00:00 2001 From: Alexandros Batsakis Date: Sat, 5 Dec 2009 13:30:21 -0500 Subject: nfs41: add support for the exclusive create flags In v4.1 the client MUST/SHOULD use the EXCLUSIVE4_1 flag instead of EXCLUSIVE4, and GUARDED when the server supports persistent sessions. For now (and until we support suppattr_exclcreat), we don't send any attributes with EXCLUSIVE4_1 relying in the subsequent SETATTR as in v4.0 Signed-off-by: Alexandros Batsakis Signed-off-by: Trond Myklebust --- fs/nfs/nfs4xdr.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'fs/nfs/nfs4xdr.c') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 3a71b40a990a..0b1f3fcdd28a 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -51,6 +51,7 @@ #include #include #include "nfs4_fs.h" +#include "internal.h" #define NFSDBG_FACILITY NFSDBG_XDR @@ -134,7 +135,7 @@ static int nfs4_stat_to_errno(int); #define decode_lookup_maxsz (op_decode_hdr_maxsz) #define encode_share_access_maxsz \ (2) -#define encode_createmode_maxsz (1 + encode_attrs_maxsz) +#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) #define encode_opentype_maxsz (1 + encode_createmode_maxsz) #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) #define encode_open_maxsz (op_encode_hdr_maxsz + \ @@ -1140,6 +1141,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) { __be32 *p; + struct nfs_client *clp; p = reserve_space(xdr, 4); switch(arg->open_flags & O_EXCL) { @@ -1148,8 +1150,23 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op encode_attrs(xdr, arg->u.attrs, arg->server); break; default: - *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); - encode_nfs4_verifier(xdr, &arg->u.verifier); + clp = arg->server->nfs_client; + if (clp->cl_minorversion > 0) { + if (nfs4_has_persistent_session(clp)) { + *p = cpu_to_be32(NFS4_CREATE_GUARDED); + encode_attrs(xdr, arg->u.attrs, arg->server); + } else { + struct iattr dummy; + + *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); + encode_nfs4_verifier(xdr, &arg->u.verifier); + dummy.ia_valid = 0; + encode_attrs(xdr, &dummy, arg->server); + } + } else { + *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); + encode_nfs4_verifier(xdr, &arg->u.verifier); + } } } -- cgit v1.2.2