5.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit bf33bab3c4182cdd795983f14de5606e82fab377 ]
Refactor for clarity.
Signed-off-by: Chuck Lever chuck.lever@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfsd/nfs4xdr.c | 78 +++++++++++++++++++++++++++-------------------- 1 file changed, 45 insertions(+), 33 deletions(-)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 1a2dc52c4340b..62096b2a57b35 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -946,6 +946,48 @@ nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup return nfsd4_decode_component4(argp, &lookup->lo_name, &lookup->lo_len); }
+static __be32 +nfsd4_decode_createhow4(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) +{ + __be32 status; + + if (xdr_stream_decode_u32(argp->xdr, &open->op_createmode) < 0) + return nfserr_bad_xdr; + switch (open->op_createmode) { + case NFS4_CREATE_UNCHECKED: + case NFS4_CREATE_GUARDED: + status = nfsd4_decode_fattr4(argp, open->op_bmval, + ARRAY_SIZE(open->op_bmval), + &open->op_iattr, &open->op_acl, + &open->op_label, &open->op_umask); + if (status) + return status; + break; + case NFS4_CREATE_EXCLUSIVE: + status = nfsd4_decode_verifier4(argp, &open->op_verf); + if (status) + return status; + break; + case NFS4_CREATE_EXCLUSIVE4_1: + if (argp->minorversion < 1) + return nfserr_bad_xdr; + status = nfsd4_decode_verifier4(argp, &open->op_verf); + if (status) + return status; + status = nfsd4_decode_fattr4(argp, open->op_bmval, + ARRAY_SIZE(open->op_bmval), + &open->op_iattr, &open->op_acl, + &open->op_label, &open->op_umask); + if (status) + return status; + break; + default: + return nfserr_bad_xdr; + } + + return nfs_ok; +} + static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) { __be32 *p; @@ -1046,39 +1088,9 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) case NFS4_OPEN_NOCREATE: break; case NFS4_OPEN_CREATE: - READ_BUF(4); - open->op_createmode = be32_to_cpup(p++); - switch (open->op_createmode) { - case NFS4_CREATE_UNCHECKED: - case NFS4_CREATE_GUARDED: - status = nfsd4_decode_fattr4(argp, open->op_bmval, - ARRAY_SIZE(open->op_bmval), - &open->op_iattr, &open->op_acl, - &open->op_label, &open->op_umask); - if (status) - goto out; - break; - case NFS4_CREATE_EXCLUSIVE: - status = nfsd4_decode_verifier4(argp, &open->op_verf); - if (status) - return status; - break; - case NFS4_CREATE_EXCLUSIVE4_1: - if (argp->minorversion < 1) - goto xdr_error; - status = nfsd4_decode_verifier4(argp, &open->op_verf); - if (status) - return status; - status = nfsd4_decode_fattr4(argp, open->op_bmval, - ARRAY_SIZE(open->op_bmval), - &open->op_iattr, &open->op_acl, - &open->op_label, &open->op_umask); - if (status) - goto out; - break; - default: - goto xdr_error; - } + status = nfsd4_decode_createhow4(argp, open); + if (status) + return status; break; default: goto xdr_error;