From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Tue, 2 Feb 2021 20:59:04 +0000 (+0100)
Subject: cgroups: vet parameters
X-Git-Tag: lxc-5.0.0~305^2~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b57f9b131918c064b43cc371f3123492355b5c16;p=thirdparty%2Flxc.git

cgroups: vet parameters

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c
index 638e2f3c1..677b70cc6 100644
--- a/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@ -3597,6 +3597,9 @@ bool cgroup_freeze(const char *name, const char *lxcpath, int timeout)
 	__do_close int unified_fd = -EBADF;
 	int ret;
 
+	if (is_empty_string(name) || is_empty_string(lxcpath))
+		return ret_errno(EINVAL);
+
 	unified_fd = lxc_cmd_get_cgroup2_fd(name, lxcpath);
 	if (unified_fd < 0)
 		return ret_errno(ENOCGROUP2);
@@ -3614,6 +3617,9 @@ bool cgroup_unfreeze(const char *name, const char *lxcpath, int timeout)
 	__do_close int unified_fd = -EBADF;
 	int ret;
 
+	if (is_empty_string(name) || is_empty_string(lxcpath))
+		return ret_errno(EINVAL);
+
 	unified_fd = lxc_cmd_get_cgroup2_fd(name, lxcpath);
 	if (unified_fd < 0)
 		return ret_errno(ENOCGROUP2);