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Check for write permission for some ioctls.

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This commit is contained in:
augustss 2002-04-23 06:34:11 +00:00
parent f3e8a130b8
commit 0405958cec
1 changed files with 8 additions and 2 deletions
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10
sys/dev/usb/usb.c
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@ -1,4 +1,4 @@
/* $NetBSD: usb.c,v 1.68 2002/02/20 20:30:12 christos Exp $ */
/* $NetBSD: usb.c,v 1.69 2002/04/23 06:34:11 augustss Exp $ */
/*
* Copyright (c) 1998, 2002 The NetBSD Foundation, Inc.
@ -44,7 +44,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.68 2002/02/20 20:30:12 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.69 2002/04/23 06:34:11 augustss Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -54,6 +54,7 @@ __KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.68 2002/02/20 20:30:12 christos Exp $");
#include <sys/kthread.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/poll.h>
#include <sys/select.h>
#include <sys/vnode.h>
@ -466,6 +467,8 @@ usbioctl(dev_t devt, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
switch (cmd) {
#ifdef USB_DEBUG
case USB_SETDEBUG:
if (!(flag & FWRITE))
return (EBADF);
usbdebug = ((*(int *)data) & 0x000000ff);
#ifdef UHCI_DEBUG
uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8;
@ -486,6 +489,9 @@ usbioctl(dev_t devt, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
usbd_status err;
int error = 0;
if (!(flag & FWRITE))
return (EBADF);
DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len));
if (len < 0 || len > 32768)
return (EINVAL);