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Don't call cdevsw_lookup() with an uninitialised variable in 

linux_sys_ioctl().
This commit is contained in:
simonb 2002-10-22 11:55:10 +00:00
parent d5dc62cbd8
commit 8465b6a98d
1 changed files with 3 additions and 5 deletions
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8
sys/compat/linux/common/linux_ioctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: linux_ioctl.c,v 1.29 2002/09/06 13:18:43 gehenna Exp $ */
/* $NetBSD: linux_ioctl.c,v 1.30 2002/10/22 11:55:10 simonb Exp $ */
/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_ioctl.c,v 1.29 2002/09/06 13:18:43 gehenna Exp $");
__KERNEL_RCSID(0, "$NetBSD: linux_ioctl.c,v 1.30 2002/10/22 11:55:10 simonb Exp $");
#if defined(_KERNEL_OPT)
#include "sequencer.h"
@ -114,17 +114,15 @@ linux_sys_ioctl(p, v, retval)
struct vnode *vp;
struct vattr va;
extern const struct cdevsw sequencer_cdevsw;
const struct cdevsw *cdev;
fdp = p->p_fd;
cdev = cdevsw_lookup(va.va_rdev);
if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
return EBADF;
if (fp->f_type == DTYPE_VNODE &&
(vp = (struct vnode *)fp->f_data) != NULL &&
vp->v_type == VCHR &&
VOP_GETATTR(vp, &va, p->p_ucred, p) == 0 &&
cdev == &sequencer_cdevsw)
cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw)
return oss_ioctl_sequencer(p, (void*)LINUX_TO_OSS(uap),
retval);
else