diff options
Diffstat (limited to 'services/jni')
-rw-r--r-- | services/jni/com_android_server_connectivity_Vpn.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/services/jni/com_android_server_connectivity_Vpn.cpp b/services/jni/com_android_server_connectivity_Vpn.cpp index 206df25..ae7fbfe 100644 --- a/services/jni/com_android_server_connectivity_Vpn.cpp +++ b/services/jni/com_android_server_connectivity_Vpn.cpp @@ -55,6 +55,7 @@ static int create_interface(int mtu, char *name, int *index) { int tun = open("/dev/tun", O_RDWR); int inet4 = socket(AF_INET, SOCK_DGRAM, 0); + int flags; ifreq ifr4; memset(&ifr4, 0, sizeof(ifr4)); @@ -86,6 +87,13 @@ static int create_interface(int mtu, char *name, int *index) goto error; } + // Make it non-blocking. + flags = fcntl(tun, F_GETFL, 0); + if (flags == -1 || fcntl(tun, F_SETFL, flags | O_NONBLOCK)) { + LOGE("Cannot set non-blocking on %s: %s", ifr4.ifr_name, strerror(errno)); + goto error; + } + strcpy(name, ifr4.ifr_name); *index = ifr4.ifr_ifindex; close(inet4); |