diff mbox

[3/3] autofs: fix "fix dev ioctl number range check"

Message ID 20160831033420.9910.16809.stgit@pluto.themaw.net (mailing list archive)
State New, archived
Headers show

Commit Message

Ian Kent Aug. 31, 2016, 3:34 a.m. UTC 
From: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>

102a340f had a typo that made the count macro negative (-13).
The acutal check used by ioctl is ((cmd - cmd_first) > COUNT),
so it needs to be positive (13).

* 102a340f is a commit in linux-next which hasn't been merged
to mainline upstream.

Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
---
 fs/autofs4/autofs_i.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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diff mbox

Patch

diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 4404a22..a1fba42 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -21,7 +21,7 @@ 
 
 #define AUTOFS_DEV_IOCTL_IOC_FIRST	(AUTOFS_DEV_IOCTL_VERSION)
 #define AUTOFS_DEV_IOCTL_IOC_COUNT \
-	(AUTOFS_DEV_IOCTL_VERSION_CMD - AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD)
+	(AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD - AUTOFS_DEV_IOCTL_VERSION_CMD)
 
 #include <linux/kernel.h>
 #include <linux/slab.h>