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sockets: Fix socket_sockaddr_to_address_unix() for abstract sockets 

Commit 776b97d360 "qemu-sockets: add abstract UNIX domain socket
support" neglected to update socket_sockaddr_to_address_unix().  The
function returns a non-abstract socket address for abstract
sockets (wrong) with a null @path (also wrong; a non-optional QAPI str
member must never be null).

The null @path is due to confused code going back all the way to
commit 17c55decec "sockets: add helpers for creating SocketAddress
from a socket".

Add the required special case, and simplify the confused code.

Fixes: 776b97d360
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Markus Armbruster 2020-11-02 10:44:19 +01:00 committed by Daniel P. Berrangé
parent b08cc97d6b
commit 3b14b4ec49
1 changed files with 12 additions and 2 deletions
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14
util/qemu-sockets.c
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@ -1270,10 +1270,20 @@ socket_sockaddr_to_address_unix(struct sockaddr_storage *sa,
addr = g_new0(SocketAddress, 1);
addr->type = SOCKET_ADDRESS_TYPE_UNIX;
if (su->sun_path[0]) {
addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path));
#ifdef CONFIG_LINUX
if (!su->sun_path[0]) {
/* Linux abstract socket */
addr->u.q_unix.path = g_strndup(su->sun_path + 1,
sizeof(su->sun_path) - 1);
addr->u.q_unix.has_abstract = true;
addr->u.q_unix.abstract = true;
addr->u.q_unix.has_tight = true;
addr->u.q_unix.tight = salen < sizeof(*su);
return addr;
}
#endif
addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path));
return addr;
}
#endif /* WIN32 */