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kernel-netlink: Fallback to UDP if detecting socket protocol fails

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getsockopt(SO_PROTOCOL) is not supported before 2.6.32. Default to UDP if
either the SO_PROTOCOL define is missing or the syscall fails.
This commit is contained in:
Martin Willi 2014-09-29 17:11:53 +02:00
parent 87888f9926
commit 3065081c3e
1 changed files with 4 additions and 2 deletions
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6
src/libhydra/plugins/kernel_netlink/kernel_netlink_ipsec.c
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@ -2720,10 +2720,12 @@ static bool add_port_bypass(private_kernel_netlink_ipsec_t *this,
{ {
return FALSE; return FALSE;
} }
#ifdef SO_PROTOCOL /* since 2.6.32 */
len = sizeof(bypass.proto); len = sizeof(bypass.proto);
if (getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &bypass.proto, &len) != 0) if (getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &bypass.proto, &len) != 0)
{ #endif
return FALSE; { /* assume UDP if SO_PROTOCOL not supported */
bypass.proto = IPPROTO_UDP;
} }
switch (family) switch (family)
{ {