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the special filename "" does not receive translation and is going to fail.

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previously, systrace would normalize it to $CWD/.; found by Nikolay Sturm
from OpenBSD.
This commit is contained in:
provos 2004-01-24 03:44:46 +00:00
parent 00b99a724a
commit 3afd9aba5f
1 changed files with 9 additions and 2 deletions
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11
bin/systrace/intercept.c
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@ -1,4 +1,4 @@
/* $NetBSD: intercept.c,v 1.19 2003/08/25 09:12:45 cb Exp $ */
/* $NetBSD: intercept.c,v 1.20 2004/01/24 03:44:46 provos Exp $ */
/* $OpenBSD: intercept.c,v 1.29 2002/08/28 03:30:27 itojun Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
@ -30,7 +30,7 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: intercept.c,v 1.19 2003/08/25 09:12:45 cb Exp $");
__RCSID("$NetBSD: intercept.c,v 1.20 2004/01/24 03:44:46 provos Exp $");
#include <sys/types.h>
#include <sys/param.h>
@ -605,6 +605,13 @@ normalize_filename(int fd, pid_t pid, char *name, int userp)
static char cwd[2*MAXPATHLEN];
int havecwd = 0;
/*
* The empty filename does not receive normalization.
* System calls are supposed to fail on it.
*/
if (strcmp(name, "") == 0)
return (name);
if (fd != -1 && intercept.setcwd(fd, pid) == -1) {
if (errno == EBUSY)
return (NULL);