The count of miscellaneous device ioctls in fs/autofs4/autofs_i.h is wrong.
The number of ioctls is the difference between AUTOFS_DEV_IOCTL_VERSION_CMD
and AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD (14) not the difference between
AUTOFS_IOC_COUNT and 11 (21).
Link: http://lkml.kernel.org/r/20160812024841.12352.11975.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
#define AUTOFS_IOC_COUNT 32
#define AUTOFS_DEV_IOCTL_IOC_FIRST (AUTOFS_DEV_IOCTL_VERSION)
-#define AUTOFS_DEV_IOCTL_IOC_COUNT (AUTOFS_IOC_COUNT - 11)
+#define AUTOFS_DEV_IOCTL_IOC_COUNT \
+ (AUTOFS_DEV_IOCTL_VERSION_CMD - AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD)
#include <linux/kernel.h>
#include <linux/slab.h>
cmd = _IOC_NR(command);
if (_IOC_TYPE(command) != _IOC_TYPE(AUTOFS_DEV_IOCTL_IOC_FIRST) ||
- cmd - cmd_first >= AUTOFS_DEV_IOCTL_IOC_COUNT) {
+ cmd - cmd_first > AUTOFS_DEV_IOCTL_IOC_COUNT) {
return -ENOTTY;
}