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passt, tap: Don't use -1 as uninitialised value for fd_tap_listen

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This is a remnant from the time we kept access to the original
filesystem and we could reinitialise the listening AF_UNIX socket.

Since commit 0515adceaa ("passt, pasta: Namespace-based sandboxing,
defer seccomp policy application"), however, we can't re-bind the
listening socket once we're up and running.

Drop the -1 initalisation and the corresponding check.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Stefano Brivio 2024-05-22 19:35:25 +02:00
parent d02bb6ca05
commit fcfb592adc
2 changed files with 2 additions and 3 deletions
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2
passt.c
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@ -211,7 +211,7 @@ int main(int argc, char **argv)
isolate_initial();
c.pasta_netns_fd = c.fd_tap = c.fd_tap_listen = -1;
c.pasta_netns_fd = c.fd_tap = -1;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;

3
tap.c
View file

@ -1304,8 +1304,7 @@ void tap_sock_init(struct ctx *c)
}
if (c->mode == MODE_PASST) {
if (c->fd_tap_listen == -1)
tap_sock_unix_init(c);
tap_sock_unix_init(c);
/* In passt mode, we don't know the guest's MAC address until it
* sends us packets. Use the broadcast address so that our