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Subject[PATCH 4/4] Unionfs: use vfs_ioctl
Date
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---
fs/unionfs/commonfops.c | 32 ++++++--------------------------
1 files changed, 6 insertions(+), 26 deletions(-)
diff --git a/fs/unionfs/commonfops.c b/fs/unionfs/commonfops.c
index 50e5775..c99b519 100644
--- a/fs/unionfs/commonfops.c
+++ b/fs/unionfs/commonfops.c
@@ -661,31 +661,6 @@ out:
return err;
}

-/* pass the ioctl to the lower fs */
-static long do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct file *lower_file;
- int err;
-
- lower_file = unionfs_lower_file(file);
-
- err = -ENOTTY;
- if (!lower_file || !lower_file->f_op)
- goto out;
- if (lower_file->f_op->unlocked_ioctl) {
- err = lower_file->f_op->unlocked_ioctl(lower_file, cmd, arg);
- } else if (lower_file->f_op->ioctl) {
- lock_kernel();
- err = lower_file->f_op->ioctl(
- lower_file->f_path.dentry->d_inode,
- lower_file, cmd, arg);
- unlock_kernel();
- }
-
-out:
- return err;
-}
-
/*
* return to user-space the branch indices containing the file in question
*
@@ -752,6 +727,7 @@ out:
long unionfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long err;
+ struct file *lower_file;

unionfs_read_lock(file->f_path.dentry->d_sb);

@@ -775,7 +751,11 @@ long unionfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)

default:
/* pass the ioctl down */
- err = do_ioctl(file, cmd, arg);
+ lower_file = unionfs_lower_file(file);
+ if (lower_file)
+ err = vfs_ioctl(lower_file, cmd, arg);
+ else
+ err = -ENOTTY;
break;
}

--
1.5.2.2
-
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