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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-08-27 20:37:39 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-08-27 20:42:20 -0400 |
| commit | d13549074cf066d6d5bb29903d044beffea342d3 (patch) | |
| tree | 0d4167522dbc760366ff0fb9b66425c894d4d3ff /fs/nfs | |
| parent | 5334c5bdac926c5f8d89729beccb46fe88eda9e7 (diff) | |
| download | linux-d13549074cf066d6d5bb29903d044beffea342d3.tar.gz linux-d13549074cf066d6d5bb29903d044beffea342d3.tar.bz2 linux-d13549074cf066d6d5bb29903d044beffea342d3.zip | |
NFSv4.1/flexfiles: Fix a protocol error in layoutreturn
According to the flexfiles protocol, the layoutreturn should specify an
array of errors in the following format:
struct ff_ioerr4 {
offset4 ffie_offset;
length4 ffie_length;
stateid4 ffie_stateid;
device_error4 ffie_errors<>;
};
This patch fixes up the code to ensure that our ffie_errors is indeed
encoded as an array (albeit with only a single entry).
Reported-by: Tom Haynes <thomas.haynes@primarydata.com>
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayoutdev.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c index f13e1969eedd..b28fa4cbea52 100644 --- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -500,16 +500,19 @@ int ff_layout_encode_ds_ioerr(struct nfs4_flexfile_layout *flo, range->offset, range->length)) continue; /* offset(8) + length(8) + stateid(NFS4_STATEID_SIZE) - * + deviceid(NFS4_DEVICEID4_SIZE) + status(4) + opnum(4) + * + array length + deviceid(NFS4_DEVICEID4_SIZE) + * + status(4) + opnum(4) */ p = xdr_reserve_space(xdr, - 24 + NFS4_STATEID_SIZE + NFS4_DEVICEID4_SIZE); + 28 + NFS4_STATEID_SIZE + NFS4_DEVICEID4_SIZE); if (unlikely(!p)) return -ENOBUFS; p = xdr_encode_hyper(p, err->offset); p = xdr_encode_hyper(p, err->length); p = xdr_encode_opaque_fixed(p, &err->stateid, NFS4_STATEID_SIZE); + /* Encode 1 error */ + *p++ = cpu_to_be32(1); p = xdr_encode_opaque_fixed(p, &err->deviceid, NFS4_DEVICEID4_SIZE); *p++ = cpu_to_be32(err->status); |