diff options
| author | Daniel P. Berrange <berrange@redhat.com> | 2016-07-19 12:58:52 +0100 |
|---|---|---|
| committer | Daniel P. Berrange <berrange@redhat.com> | 2017-01-23 15:32:17 +0000 |
| commit | 6979a813f38d221bf68c3928a8d2b810cefc34b5 (patch) | |
| tree | 18ca9040208ea2903cc62fcb35173cd2a8de1379 /util | |
| parent | 598cf1c805271564686f2d732b36f50c3c40dcdd (diff) | |
sockets: add ability to disable DNS resolution for InetSocketAddress
Add a 'numeric' flag to the InetSocketAddress struct to allow the
caller to indicate that DNS should be skipped for the host/port
fields. This is useful if the caller knows the address is already
numeric and wants to guarantee no (potentially blocking) DNS
lookups are attempted.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Diffstat (limited to 'util')
| -rw-r--r-- | util/qemu-sockets.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index fe1d07aaef..b6d99cbf42 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -38,6 +38,10 @@ # define AI_V4MAPPED 0 #endif +#ifndef AI_NUMERICSERV +# define AI_NUMERICSERV 0 +#endif + static int inet_getport(struct addrinfo *e) { @@ -141,6 +145,9 @@ static int inet_listen_saddr(InetSocketAddress *saddr, memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_PASSIVE; + if (saddr->has_numeric && saddr->numeric) { + ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; + } ai.ai_family = inet_ai_family_from_address(saddr, &err); ai.ai_socktype = SOCK_STREAM; |