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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-12-03 12:04:51 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-12-10 09:01:53 -0500 |
| commit | fa94a951bf3553fee66e2c879b97da97bcf00589 (patch) | |
| tree | d9e84d8714e5a54de91647991c38460e165e2f01 /fs/nfs/nfs42xdr.c | |
| parent | bf701b765eaa82dd164d65edc5747ec7288bb5c3 (diff) | |
| download | linux-fa94a951bf3553fee66e2c879b97da97bcf00589.tar.gz linux-fa94a951bf3553fee66e2c879b97da97bcf00589.tar.bz2 linux-fa94a951bf3553fee66e2c879b97da97bcf00589.zip | |
NFSv4.2: Fix up the get/listxattr calls to rpc_prepare_reply_pages()
Ensure that both getxattr and listxattr page array are correctly
aligned, and that getxattr correctly accounts for the page padding word.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/nfs42xdr.c')
| -rw-r--r-- | fs/nfs/nfs42xdr.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c index 8432bd6b95f0..103978ff76c9 100644 --- a/fs/nfs/nfs42xdr.c +++ b/fs/nfs/nfs42xdr.c @@ -191,7 +191,7 @@ #define encode_getxattr_maxsz (op_encode_hdr_maxsz + 1 + \ nfs4_xattr_name_maxsz) -#define decode_getxattr_maxsz (op_decode_hdr_maxsz + 1 + 1) +#define decode_getxattr_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz) #define encode_setxattr_maxsz (op_encode_hdr_maxsz + \ 1 + nfs4_xattr_name_maxsz + 1) #define decode_setxattr_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) @@ -1476,17 +1476,18 @@ static void nfs4_xdr_enc_getxattr(struct rpc_rqst *req, struct xdr_stream *xdr, struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; + uint32_t replen; size_t plen; encode_compound_hdr(xdr, req, &hdr); encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fh, &hdr); + replen = hdr.replen + op_decode_hdr_maxsz + 1; encode_getxattr(xdr, args->xattr_name, &hdr); plen = args->xattr_len ? args->xattr_len : XATTR_SIZE_MAX; - rpc_prepare_reply_pages(req, args->xattr_pages, 0, plen, - hdr.replen); + rpc_prepare_reply_pages(req, args->xattr_pages, 0, plen, replen); req->rq_rcv_buf.flags |= XDRBUF_SPARSE_PAGES; encode_nops(&hdr); @@ -1520,14 +1521,15 @@ static void nfs4_xdr_enc_listxattrs(struct rpc_rqst *req, struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; + uint32_t replen; encode_compound_hdr(xdr, req, &hdr); encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fh, &hdr); + replen = hdr.replen + op_decode_hdr_maxsz + 2 + 1; encode_listxattrs(xdr, args, &hdr); - rpc_prepare_reply_pages(req, args->xattr_pages, 0, args->count, - hdr.replen); + rpc_prepare_reply_pages(req, args->xattr_pages, 0, args->count, replen); encode_nops(&hdr); } |