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| author | ChenXiaoSong <chenxiaosong2@huawei.com> | 2022-03-29 14:32:08 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-03-30 05:14:00 +0300 |
| commit | b243874f6f9568b2daf1a00e9222cacdc15e159c (patch) | |
| tree | 8b367ae6df9cbcf655baca2c9a1e63311706e33a /net/sunrpc/clnt.c | |
| parent | ab0fc21bc7105b54bafd85bd8b82742f9e68898a (diff) | |
| download | linux-b243874f6f9568b2daf1a00e9222cacdc15e159c.tar.xz | |
NFSv4: fix open failure with O_ACCMODE flag
open() with O_ACCMODE|O_DIRECT flags secondly will fail.
Reproducer:
1. mount -t nfs -o vers=4.2 $server_ip:/ /mnt/
2. fd = open("/mnt/file", O_ACCMODE|O_DIRECT|O_CREAT)
3. close(fd)
4. fd = open("/mnt/file", O_ACCMODE|O_DIRECT)
Server nfsd4_decode_share_access() will fail with error nfserr_bad_xdr when
client use incorrect share access mode of 0.
Fix this by using NFS4_SHARE_ACCESS_BOTH share access mode in client,
just like firstly opening.
Fixes: ce4ef7c0a8a05 ("NFS: Split out NFS v4 file operations")
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net/sunrpc/clnt.c')
0 files changed, 0 insertions, 0 deletions