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feat: allow dumping unix socket other than DGRAM but in closed state

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This commit is contained in:
Adam Pasyniuk 2025-12-12 19:21:57 +01:00
parent c86c7b422e
commit dda835746d
1 changed files with 24 additions and 3 deletions
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27
criu/sk-unix.c
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@ -881,9 +881,30 @@ static int __dump_external_socket(struct unix_sk_desc *sk, struct unix_sk_desc *
}
if (peer->type != SOCK_DGRAM) {
show_one_unix("Ext stream not supported", peer);
pr_err("Can't dump half of stream unix connection. name: %s; peer name: %s\n",
sk->name, peer->name);
/*
* For external stream sockets, we allow dumping them but
* won't try to reconnect on restore. The application will
* see a disconnected socket and can handle it appropriately.
*/
if (peer->type == SOCK_STREAM || peer->type == SOCK_SEQPACKET) {
pr_info("Dumping external stream socket %d (peer: %d). "
"Will not reconnect on restore.\n",
sk->sd.ino, peer->sd.ino);
/*
* Preserve the actual socket type from the kernel.
* We set state to TCP_CLOSE and clear peer since we
* won't reconnect on restore - the application will
* see a disconnected socket.
*/
sk->ue->type = sk->type;
sk->ue->state = TCP_CLOSE;
sk->ue->peer = 0;
return 0;
}
show_one_unix("Ext socket type not supported", peer);
pr_err("Can't dump external unix socket of type %d. name: %s; peer name: %s\n",
peer->type, sk->name, peer->name);
return -1;
}