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| author | J. Bruce Fields <bfields@redhat.com> | 2015-07-23 11:08:43 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-07-27 11:16:25 -0400 |
| commit | bdcc2cd14e4e86f1fb19c78e191a1b8da3d6dea0 (patch) | |
| tree | 8ef0e76cd25875e77a8618fd483a078eaa7b25a5 | |
| parent | d4c30454db732d5a377abfc309c7a629f3bbaeb0 (diff) | |
| download | linux-bdcc2cd14e4e86f1fb19c78e191a1b8da3d6dea0.tar.bz2 | |
NFSv4.2: handle NFS-specific llseek errors
Handle NFS-specific llseek errors instead of letting them leak out to
userspace.
Reported-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | fs/nfs/nfs42proc.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index f486b80f927a..d731bbf974aa 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -135,7 +135,7 @@ int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) return err; } -loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) +static loff_t _nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) { struct inode *inode = file_inode(filep); struct nfs42_seek_args args = { @@ -171,6 +171,23 @@ loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); } +loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) +{ + struct nfs_server *server = NFS_SERVER(file_inode(filep)); + struct nfs4_exception exception = { }; + int err; + + do { + err = _nfs42_proc_llseek(filep, offset, whence); + if (err == -ENOTSUPP) + return -EOPNOTSUPP; + err = nfs4_handle_exception(server, err, &exception); + } while (exception.retry); + + return err; +} + + static void nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) { |