From 29e9a3467c1367549568d7d411d5f30209ae181b Mon Sep 17 00:00:00 2001
From: Eric Paris <eparis@redhat.com>
Date: Wed, 10 Oct 2012 15:25:24 -0400
Subject: [PATCH] audit: make audit_compare_dname_path use parent_len helper
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
kernel/auditfilter.c | 27 +++++++--------------------
1 file changed, 7 insertions(+), 20 deletions(-)
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index ff4011c19b138..d705eb17661b4 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1332,32 +1332,19 @@ int parent_len(const char *path)
* return of 0 indicates a match. */
int audit_compare_dname_path(const char *dname, const char *path)
{
- int dlen, plen;
+ int dlen, pathlen, parentlen;
const char *p;
- if (!dname || !path)
- return 1;
-
dlen = strlen(dname);
- plen = strlen(path);
- if (plen < dlen)
+ pathlen = strlen(path);
+ if (pathlen < dlen)
return 1;
- /* disregard trailing slashes */
- p = path + plen - 1;
- while ((*p == '/') && (p > path))
- p--;
-
- /* find last path component */
- p = p - dlen + 1;
- if (p < path)
+ parentlen = parent_len(path);
+ if (pathlen - parentlen != dlen)
return 1;
- else if (p > path) {
- if (*--p != '/')
- return 1;
- else
- p++;
- }
+
+ p = path + parentlen;
return strncmp(p, dname, dlen);
}
--
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