From 68519ff2a1c72c67fcdc4b81671acda59f420af9 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 17 Nov 2020 11:56:26 -0500 Subject: [PATCH] NFSD: Update the NFSv2 SETACL argument decoder to use struct xdr_stream Signed-off-by: Chuck Lever --- fs/nfsd/nfs3acl.c | 31 +++++++++++++------------------ 1 file changed, 13 insertions(+), 18 deletions(-) diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c index addb0d7..a568b84 100644 --- a/fs/nfsd/nfs3acl.c +++ b/fs/nfsd/nfs3acl.c @@ -140,28 +140,23 @@ static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p) static int nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p) { - struct nfsd3_setaclargs *args = rqstp->rq_argp; - struct kvec *head = rqstp->rq_arg.head; - unsigned int base; - int n; + struct xdr_stream *xdr = &rqstp->rq_arg_stream; + struct nfsd3_setaclargs *argp = rqstp->rq_argp; - p = nfs3svc_decode_fh(p, &args->fh); - if (!p) + if (!svcxdr_decode_nfs_fh3(xdr, &argp->fh)) + return 0; + if (xdr_stream_decode_u32(xdr, &argp->mask) < 0) return 0; - args->mask = ntohl(*p++); - if (args->mask & ~NFS_ACL_MASK || - !xdr_argsize_check(rqstp, p)) + 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, - (args->mask & NFS_ACL) ? - &args->acl_access : NULL); - if (n > 0) - n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL, - (args->mask & NFS_DFACL) ? - &args->acl_default : NULL); - return (n > 0); + return 1; } /* -- 2.7.4