treewide: Add IN4ADDR_ANY_INIT macro

We already define IN4ADDR_LOOPBACK_INIT to initialise a struct in_addr to
the loopback address, make a similar one for the unspecified / any address.
This avoids messying things with the internal structure of struct in_addr
where we don't care about it.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/util.h b/util.h
index 9446ea7..fb8c3f1 100644
--- a/util.h
+++ b/util.h
@@ -122,6 +122,9 @@
 	(((struct in_addr *)(a))->s_addr == ((struct in_addr *)b)->s_addr)
 #define IN4ADDR_LOOPBACK_INIT \
 	{ .s_addr	= htonl_constant(INADDR_LOOPBACK) }
+#define IN4ADDR_ANY_INIT \
+	{ .s_addr	= htonl_constant(INADDR_ANY) }
+
 
 #define NS_FN_STACK_SIZE	(RLIMIT_STACK_VAL * 1024 / 8)
 int do_clone(int (*fn)(void *), char *stack_area, size_t stack_size, int flags,