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authorOndrej Zajicek (work) <santiago@crfreenet.org>2022-01-15 22:39:40 +0100
committerOndrej Zajicek (work) <santiago@crfreenet.org>2022-01-15 22:39:40 +0100
commitbbc33f6ec310d98b9100fb883a2b8908ede1b5a8 (patch)
tree80fa7e950a9fcf44d23ea97cb299694424fd6881
parent8988264a64dc9985303332568832b108dba3acd3 (diff)
Netlink: Add another workaround for older kernel headers
Unfortunately, SOL_NETLINK is both recently added and arch-dependent, so we cannot just define it.
-rw-r--r--sysdep/linux/netlink.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index 27b1a617..ccd62f26 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -164,7 +164,14 @@ nl_open_sock(struct nl_sock *nl)
static void
nl_set_strict_dump(struct nl_sock *nl, int strict)
{
+ /*
+ * Strict checking is not necessary, it improves behavior on newer kernels.
+ * If it is not available (missing SOL_NETLINK compile-time, or ENOPROTOOPT
+ * run-time), we can just ignore it.
+ */
+#ifdef SOL_NETLINK
setsockopt(nl->fd, SOL_NETLINK, NETLINK_GET_STRICT_CHK, &strict, sizeof(strict));
+#endif
}
static void