diff options
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 45 |
1 files changed, 26 insertions, 19 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index c2815f48..37a73c8 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1759,16 +1759,19 @@ static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, char esc_exit) { __be32 *p; - __be32 *countp; + __be32 pathlen; + int pathlen_offset; int strlen, count=0; char *str, *end, *next; dprintk("nfsd4_encode_components(%s)\n", components); + + pathlen_offset = xdr->buf->len; p = xdr_reserve_space(xdr, 4); if (!p) return nfserr_resource; - countp = p; - WRITE32(0); /* We will fill this in with @count later */ + p++; /* We will fill this in with @count later */ + end = str = components; while (*end) { bool found_esc = false; @@ -1801,8 +1804,8 @@ static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, end++; str = end; } - p = countp; - WRITE32(count); + pathlen = htonl(xdr->buf->len - pathlen_offset); + write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); return 0; } @@ -2054,7 +2057,8 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, struct kstatfs statfs; __be32 *p; int starting_len = xdr->buf->len; - __be32 *attrlenp; + int attrlen_offset; + __be32 attrlen; u32 dummy; u64 dummy64; u32 rdattr_err = 0; @@ -2159,10 +2163,12 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, WRITE32(1); WRITE32(bmval0); } + + attrlen_offset = xdr->buf->len; p = xdr_reserve_space(xdr, 4); if (!p) goto out_resource; - attrlenp = p++; /* to be backfilled later */ + p++; /* to be backfilled later */ if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { u32 word0 = nfsd_suppattrs0(minorversion); @@ -2534,7 +2540,8 @@ out_acl: WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); } - *attrlenp = htonl((char *)xdr->p - (char *)attrlenp - 4); + attrlen = htonl(xdr->buf->len - attrlen_offset - 4); + write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); status = nfs_ok; out: @@ -3664,15 +3671,16 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) void nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) { + struct xdr_stream *xdr = &resp->xdr; struct nfs4_stateowner *so = resp->cstate.replay_owner; struct svc_rqst *rqstp = resp->rqstp; - __be32 *statp; + int post_err_offset; nfsd4_enc encoder; __be32 *p; RESERVE_SPACE(8); WRITE32(op->opnum); - statp = p++; /* to be backfilled at the end */ + post_err_offset = xdr->buf->len; if (op->opnum == OP_ILLEGAL) goto status; @@ -3698,20 +3706,19 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) * bug if we had to do this on a non-idempotent op: */ warn_on_nonidempotent_op(op); - resp->xdr.p = statp + 1; + xdr_truncate_encode(xdr, post_err_offset); } if (so) { + int len = xdr->buf->len - post_err_offset; + so->so_replay.rp_status = op->status; - so->so_replay.rp_buflen = (char *)resp->xdr.p - - (char *)(statp+1); - memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); + so->so_replay.rp_buflen = len; + read_bytes_from_xdr_buf(xdr->buf, post_err_offset, + so->so_replay.rp_buf, len); } status: - /* - * Note: We write the status directly, instead of using WRITE32(), - * since it is already in network byte order. - */ - *statp = op->status; + /* Note that op->status is already in network byte order: */ + write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); } /* |
