set O_CLOEXEC on /dev/tun open

Ensure that this file descriptor cannot leak across exec boundaries, in
the unlikely event that system_server does an exec().

Test: device boots and no problems.
Change-Id: I45691b7780026ea288e57db73fcc88820a2b06b1

parent f5852d15

services/core/jni/com_android_server_connectivity_Vpn.cpp

+1 −1

Original line number	Diff line number	Diff line
		@@ -57,7 +57,7 @@ static inline in_addr_t as_in_addr(sockaddr sa) {

		static int create_interface(int mtu)
		{
		int tun = open("/dev/tun", O_RDWR \| O_NONBLOCK);
		int tun = open("/dev/tun", O_RDWR \| O_NONBLOCK \| O_CLOEXEC);

		ifreq ifr4;
		memset(&ifr4, 0, sizeof(ifr4));