From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Fri, 26 Mar 2021 10:34:21 +0000 (+0100)
Subject: log: don't create directories for fuzz builds
X-Git-Tag: lxc-5.0.0~245^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e459cf683160a2ab9b253d03e64e6de22576978b;p=thirdparty%2Flxc.git

log: don't create directories for fuzz builds

Fixes: #3730
Fixes: https://github.com/google/oss-fuzz/issues/5509
Suggested-by: Evgeny Vereshchagin <evvers@ya.ru>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/log.c b/src/lxc/log.c
index e1473603a..90a56e26a 100644
--- a/src/lxc/log.c
+++ b/src/lxc/log.c
@@ -502,7 +502,11 @@ static int build_dir(const char *name)
 			continue;
 		*p = '\0';
 
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 		ret = lxc_unpriv(mkdir(n, 0755));
+#else
+		ret = errno = EEXIST;
+#endif /*!FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
 		*p = '/';
 		if (ret && errno != EEXIST)
 			return log_error_errno(-errno, errno, "Failed to create directory \"%s\"", n);