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compat_30_sys_getdents: don't leak kernel stack garbage to userland.

This commit is contained in:
yamt 2005-08-19 13:16:56 +00:00
parent 7e4e283458
commit 34dab5e58c
1 changed files with 4 additions and 3 deletions
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7
sys/compat/common/vfs_syscalls_30.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_syscalls_30.c,v 1.2 2005/08/19 06:01:00 christos Exp $ */
/* $NetBSD: vfs_syscalls_30.c,v 1.3 2005/08/19 13:16:56 yamt Exp $ */
/*-
* Copyright (c) 2005 The NetBSD Foundation, Inc.
@ -36,7 +36,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls_30.c,v 1.2 2005/08/19 06:01:00 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls_30.c,v 1.3 2005/08/19 13:16:56 yamt Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -282,7 +282,8 @@ again:
idb.d_fileno = (u_int32_t)bdp->d_fileno;
idb.d_type = bdp->d_type;
(void)memcpy(idb.d_name, bdp->d_name, idb.d_namlen);
idb.d_name[idb.d_namlen] = '\0';
memset(idb.d_name + idb.d_namlen, 0,
idb.d_reclen - _DIRENT_NAMEOFF(&idb) - idb.d_namlen);
if ((error = copyout(&idb, outp, idb.d_reclen)) != 0)
goto out;
/* advance past this real entry */