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NFSD: Update GETATTR3args decoder to use struct xdr_stream 

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-10-20 14:30:02 -04:00
parent 81d2174743
commit 9575363a9e
3 changed files with 27 additions and 9 deletions
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3
fs/nfsd/nfs3proc.c
View File

@ -683,7 +683,6 @@ out:
* NFSv3 Server procedures.
* Only the results of non-idempotent operations are cached.
*/
#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
#define nfsd3_mkdirargs nfsd3_createargs
@ -715,7 +714,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_decode = nfs3svc_decode_fhandleargs,
.pc_encode = nfs3svc_encode_attrstatres,
.pc_release = nfs3svc_release_fhandle,
.pc_argsize = sizeof(struct nfsd3_fhandleargs),
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd3_attrstatres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,

31
fs/nfsd/nfs3xdr.c
View File

@ -29,8 +29,9 @@ static u32 nfs3_ftypes[] = {
/*
* XDR functions for basic NFS types
* Basic NFSv3 data types (RFC 1813 Sections 2.5 and 2.6)
*/
static __be32 *
encode_time3(__be32 *p, struct timespec64 *time)
{
@ -46,6 +47,26 @@ decode_time3(__be32 *p, struct timespec64 *time)
return p;
}
static bool
svcxdr_decode_nfs_fh3(struct xdr_stream *xdr, struct svc_fh *fhp)
{
__be32 *p;
u32 size;
if (xdr_stream_decode_u32(xdr, &size) < 0)
return false;
if (size == 0 || size > NFS3_FHSIZE)
return false;
p = xdr_inline_decode(xdr, size);
if (!p)
return false;
fh_init(fhp, NFS3_FHSIZE);
fhp->fh_handle.fh_size = size;
memcpy(&fhp->fh_handle.fh_base, p, size);
return true;
}
static __be32 *
decode_fh(__be32 *p, struct svc_fh *fhp)
{
@ -312,14 +333,12 @@ void fill_post_wcc(struct svc_fh *fhp)
*/
int
nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
{
struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_fhandle *args = rqstp->rq_argp;
p = decode_fh(p, &args->fh);
if (!p)
return 0;
return xdr_argsize_check(rqstp, p);
return svcxdr_decode_nfs_fh3(xdr, &args->fh);
}
int

2
fs/nfsd/xdr3.h
View File

@ -273,7 +273,7 @@ union nfsd3_xdrstore {
#define NFS3_SVC_XDRSIZE sizeof(union nfsd3_xdrstore)
int nfs3svc_decode_fhandle(struct svc_rqst *, __be32 *);
int nfs3svc_decode_fhandleargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_sattrargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_diropargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_accessargs(struct svc_rqst *, __be32 *);