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| author | Arnd Bergmann <arnd@arndb.de> | 2018-09-11 20:47:23 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-10-23 17:19:52 +0200 |
| commit | 18bd6caaef4021803dd0d031dc37c2d001d18a5b (patch) | |
| tree | 630e1b5e44bb2b01f24c09bb2cc0b49ef56d9de4 /fs/ceph/dir.c | |
| parent | 37ecf8b20abd05cdcb6391e842802e3b4ca97876 (diff) | |
| download | lwn-18bd6caaef4021803dd0d031dc37c2d001d18a5b.tar.gz lwn-18bd6caaef4021803dd0d031dc37c2d001d18a5b.zip | |
ceph: fix compat_ioctl for ceph_dir_operations
The ceph_ioctl function is used both for files and directories, but only
the files support doing that in 32-bit compat mode.
On the s390 architecture, there is also a problem with invalid 31-bit
pointers that need to be passed through compat_ptr().
Use the new compat_ptr_ioctl() to address both issues.
Note: When backporting this patch to stable kernels, "compat_ioctl:
add compat_ptr_ioctl()" is needed as well.
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/ceph/dir.c')
| -rw-r--r-- | fs/ceph/dir.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 4ca0b8ff9a72..811f45badc10 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1808,6 +1808,7 @@ const struct file_operations ceph_dir_fops = { .open = ceph_open, .release = ceph_release, .unlocked_ioctl = ceph_ioctl, + .compat_ioctl = compat_ptr_ioctl, .fsync = ceph_fsync, .lock = ceph_lock, .flock = ceph_flock, |