libnetutils/packet.c - create socket with close-on-exec

This prevents fork/exec leaking sockets to child processes. Test: builds, atest Bug: 155297277 Signed-off-by: Maciej Żenczykowski <maze@google.com> Change-Id: I57cb2003dd75b0bc5528978fd131730273e37a43 Merged-In: I57cb2003dd75b0bc5528978fd131730273e37a43 Former-commit-id: ecfb05d4ce67b19e087d3d5fb1a932ec7e71ceb3
aosp-ginkgo · May 11, 2020 · cf1508a · cf1508a
1 parent ee7c41a
commit cf1508a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libnetutils/packet.c b/libnetutils/packet.c
@@ -40,7 +40,7 @@
 int fatal(const char*);
 
 int open_raw_socket(const char* ifname __unused, uint8_t hwaddr[ETH_ALEN], int if_index) {
-    int s = socket(PF_PACKET, SOCK_DGRAM, 0);
+    int s = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
     if (s < 0) return fatal("socket(PF_PACKET)");
 
     struct sockaddr_ll bindaddr = {