static int nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd3_setaclargs *args)
{
struct kvec *head = rqstp->rq_arg.head;
unsigned int base;
int n;
p = nfs3svc_decode_fh(p, &args->fh);
if (!p)
return 0;
args->mask = ntohl(*p++);
if (args->mask & ~NFS_ACL_MASK ||
!xdr_argsize_check(rqstp, p))
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);
}
static inline int decode_getacl3resok(struct xdr_stream *xdr,
struct nfs3_getaclres *result)
{
struct posix_acl **acl;
unsigned int *aclcnt;
size_t hdrlen;
int error;
error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
error = decode_uint32(xdr, &result->mask);
if (unlikely(error))
goto out;
error = -EINVAL;
if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
goto out;
hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
acl = NULL;
if (result->mask & NFS_ACL)
acl = &result->acl_access;
aclcnt = NULL;
if (result->mask & NFS_ACLCNT)
aclcnt = &result->acl_access_count;
error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
if (unlikely(error <= 0))
goto out;
acl = NULL;
if (result->mask & NFS_DFACL)
acl = &result->acl_default;
aclcnt = NULL;
if (result->mask & NFS_DFACLCNT)
aclcnt = &result->acl_default_count;
error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
if (unlikely(error <= 0))
return error;
error = 0;
out:
return error;
}
