diff options
| author | Jan Blunck <[email protected]> | 2010-05-26 14:44:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2010-05-27 09:12:56 -0700 |
| commit | b4d878e23c7f574490ee4d6fd59ebd6819781dd1 (patch) | |
| tree | f35ae256020799c8725a6f3c802b90b7c19b8c44 | |
| parent | 889e5fbbc2da4f59d5f1e9b6172c5ff2b92d02c8 (diff) | |
st: use noop_llseek() instead of default_llseek()
st_open() suggests that llseek() doesn't work: "We really want to do
nonseekable_open(inode, filp); here, but some versions of tar incorrectly
call lseek on tapes and bail out if that fails. So we disallow pread()
and pwrite(), but permit lseeks."
Instead of using the fallback default_llseek() the driver should use
noop_llseek() which leaves the file->f_pos untouched but succeeds.
Signed-off-by: Jan Blunck <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Kai Makisara <[email protected]>
Cc: Willem Riede <[email protected]>
Cc: James Bottomley <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | drivers/scsi/st.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index 3ea1a713ef25..24211d0efa6d 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -3962,6 +3962,7 @@ static const struct file_operations st_fops = .open = st_open, .flush = st_flush, .release = st_release, + .llseek = noop_llseek, }; static int st_probe(struct device *dev) |