Return an error if the user requests a negative logical block in a file.
Signed-off-by: Mike Waychison <[EMAIL PROTECTED]>
fs/ioctl.c | 2 ++
1 file changed, 2 insertions(+)
Index: linux-2.6.23/fs/ioctl.c
===================================================================
--- linux-2.6.23.orig/fs/ioctl.c 2007-10-26 15:25:48.000000000 -0700
+++ linux-2.6.23/fs/ioctl.c 2007-10-26 16:16:29.000000000 -0700
@@ -60,6 +60,8 @@ static int file_ioctl(struct file *filp,
return -EPERM;
if ((error = get_user(block, p)) != 0)
return error;
+ if (block < 0)
+ return -EINVAL;
lock_kernel();
res = mapping->a_ops->bmap(mapping, block);
--
-
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
