Commit a7be18d4 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds

applicom: Fix an unchecked user ioctl range and an error return

Closes bug #11408 by checking the card index range for command 0
Fixes the ioctl to return ENOTTY which is correct for unknown ioctls
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 17b82060
......@@ -712,8 +712,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
IndexCard = adgl->num_card-1;
if(cmd != 0 && cmd != 6 &&
((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
static int warncount = 10;
if (warncount) {
printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1);
......@@ -832,8 +831,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
}
break;
default:
printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %d\n",cmd) ;
ret = -EINVAL;
ret = -ENOTTY;
break;
}
Dummy = readb(apbs[IndexCard].RamIO + VERS);
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment