From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
Handle NFS-specific llseek errors instead of letting them leak out to
userspace.
Reported-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/nfs/nfs42proc.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
I don't actually have a test case for this, but it looks right....
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index f486b80f927a..2fec410bc50f 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)
+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)
{
--
2.4.3
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