blob: 0af717b74e19744370d995312c4282f1f4c99662 [file] [log] [blame]
From: Phil Turnbull <phil.turnbull@oracle.com>
Date: Thu, 21 Jul 2016 13:43:09 -0400
Subject: ceph: Correctly return NXIO errors from ceph_llseek
commit 955818cd5b6c4b58ea574ace4573e7afa4c19c1e upstream.
ceph_llseek does not correctly return NXIO errors because the 'out' path
always returns 'offset'.
Fixes: 06222e491e66 ("fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek")
Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com>
Signed-off-by: Yan, Zheng <zyan@redhat.com>
[bwh: Backported to 3.2:
- We don't use vfs_setpos(); instead set ret = -EINVAL or ret = offset
directly
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/ceph/file.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -793,17 +793,15 @@ out:
static loff_t ceph_llseek(struct file *file, loff_t offset, int origin)
{
struct inode *inode = file->f_mapping->host;
- int ret;
+ loff_t ret;
mutex_lock(&inode->i_mutex);
__ceph_do_pending_vmtruncate(inode);
if (origin == SEEK_END || origin == SEEK_DATA || origin == SEEK_HOLE) {
ret = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE);
- if (ret < 0) {
- offset = ret;
+ if (ret < 0)
goto out;
- }
}
switch (origin) {
@@ -818,7 +816,7 @@ static loff_t ceph_llseek(struct file *f
* write() or lseek() might have altered it
*/
if (offset == 0) {
- offset = file->f_pos;
+ ret = file->f_pos;
goto out;
}
offset += file->f_pos;
@@ -839,7 +837,7 @@ static loff_t ceph_llseek(struct file *f
}
if (offset < 0 || offset > inode->i_sb->s_maxbytes) {
- offset = -EINVAL;
+ ret = -EINVAL;
goto out;
}
@@ -848,10 +846,11 @@ static loff_t ceph_llseek(struct file *f
file->f_pos = offset;
file->f_version = 0;
}
+ ret = offset;
out:
mutex_unlock(&inode->i_mutex);
- return offset;
+ return ret;
}
const struct file_operations ceph_file_fops = {