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| author | Will Deacon <will.deacon@arm.com> | 2012-05-25 11:39:13 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-30 21:04:55 -0400 |
| commit | 46ce341b2f176c2611f12ac390adf862e932eb02 (patch) | |
| tree | 17884033d37ddf08d20b69739aa5a3559c232fc0 /fs/pipe.c | |
| parent | 3f50fff4dace23d3cfeb195d5cd4ee813cee68b7 (diff) | |
| download | renesas_kernel-46ce341b2f176c2611f12ac390adf862e932eb02.tar.gz renesas_kernel-46ce341b2f176c2611f12ac390adf862e932eb02.tar.bz2 renesas_kernel-46ce341b2f176c2611f12ac390adf862e932eb02.zip | |
pipe: return -ENOIOCTLCMD instead of -EINVAL on unknown ioctl command
As described in commit 07d106d0a ("vfs: fix up ENOIOCTLCMD error
handling"), drivers should return -ENOIOCTLCMD if they receive an ioctl
command which they don't understand. Doing so will result in -ENOTTY
being returned to userspace, which matches the behaviour of the compat
layer if it fails to translate an ioctl command.
This patch fixes the pipe ioctl to return -ENOIOCTLCMD instead of
-EINVAL when passed an unknown ioctl command.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pipe.c')
| -rw-r--r-- | fs/pipe.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index fec5e4ad071..95ebb56de49 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -693,7 +693,7 @@ static long pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return put_user(count, (int __user *)arg); default: - return -EINVAL; + return -ENOIOCTLCMD; } } |