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NFSD: Update the NFSv2 SETACL argument decoder to use struct xdr_stream

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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-11-17 11:37:35 -05:00
parent 6bb844b4eb
commit 427eab3ba2
2 changed files with 13 additions and 18 deletions
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29
fs/nfsd/nfs2acl.c
View File

@ -201,28 +201,23 @@ static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
{
struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_setaclargs *argp = rqstp->rq_argp;
struct kvec *head = rqstp->rq_arg.head;
unsigned int base;
int n;
p = nfs2svc_decode_fh(p, &argp->fh);
if (!p)
if (!svcxdr_decode_fhandle(xdr, &argp->fh))
return 0;
argp->mask = ntohl(*p++);
if (argp->mask & ~NFS_ACL_MASK ||
!xdr_argsize_check(rqstp, p))
if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
return 0;
if (argp->mask & ~NFS_ACL_MASK)
return 0;
if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_ACL) ?
&argp->acl_access : NULL))
return 0;
if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_DFACL) ?
&argp->acl_default : NULL))
return 0;
base = (char *)p - (char *)head->iov_base;
n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
(argp->mask & NFS_ACL) ?
&argp->acl_access : NULL);
if (n > 0)
n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
(argp->mask & NFS_DFACL) ?
&argp->acl_default : NULL);
return (n > 0);
return 1;
}
static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)

2
fs/nfsd/xdr3.h
View File

@ -108,7 +108,7 @@ struct nfsd3_getaclargs {
struct posix_acl;
struct nfsd3_setaclargs {
struct svc_fh fh;
int mask;
__u32 mask;
struct posix_acl *acl_access;
struct posix_acl *acl_default;
};