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inet: dump source and destination addresses for closed sockets

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If a socket has been closed, it still has both addresses and
we need to dump them.

travis-ci: success for series starting with [01/21] build: install libnet-dev
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
This commit is contained in:
Andrei Vagin
2016-12-01 11:32:29 +03:00
committed by Pavel Emelyanov
parent 6e68374369
commit e7f03fbae1
1 changed files with 39 additions and 11 deletions
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50
criu/sk-inet.c
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@@ -182,10 +182,24 @@ static int can_dump_inet_sk(const struct inet_sk_desc *sk)
return 1;
}
static int dump_sockaddr(union libsoccr_addr *sa, u32 *pb_port, u32 *pb_addr)
{
if (sa->sa.sa_family == AF_INET) {
memcpy(pb_addr, &sa->v4.sin_addr, sizeof(sa->v4.sin_addr));
*pb_port = ntohs(sa->v4.sin_port);
return 0;
} if (sa->sa.sa_family == AF_INET6) {
*pb_port = ntohs(sa->v6.sin6_port);
memcpy(pb_addr, &sa->v6.sin6_addr, sizeof(sa->v6.sin6_addr));
return 0;
}
return -1;
}
static struct inet_sk_desc *gen_uncon_sk(int lfd, const struct fd_parms *p, int proto)
{
struct inet_sk_desc *sk;
char address;
union libsoccr_addr address;
socklen_t aux;
int ret;
@@ -193,26 +207,40 @@ static struct inet_sk_desc *gen_uncon_sk(int lfd, const struct fd_parms *p, int
if (!sk)
goto err;
/* It should has no peer name */
aux = sizeof(address);
ret = do_dump_opt(lfd, SOL_SOCKET, SO_DOMAIN, &sk->sd.family, sizeof(sk->sd.family));
ret |= do_dump_opt(lfd, SOL_SOCKET, SO_TYPE, &sk->type, sizeof(sk->type));
if (ret)
goto err;
if (sk->sd.family == AF_INET)
aux = sizeof(struct sockaddr_in);
else if (sk->sd.family == AF_INET6)
aux = sizeof(struct sockaddr_in6);
else {
pr_err("Unsupported socket family: %d\n", sk->sd.family);
goto err;
}
ret = getsockopt(lfd, SOL_SOCKET, SO_PEERNAME, &address, &aux);
if (ret < 0) {
if (errno != ENOTCONN) {
pr_perror("Unexpected error returned from unconnected socket");
goto err;
}
} else if (ret == 0) {
pr_err("Name resolved on unconnected socket\n");
} else if (dump_sockaddr(&address, &sk->dst_port, sk->dst_addr))
goto err;
ret = getsockname(lfd, &address.sa, &aux);
if (ret < 0) {
if (errno != ENOTCONN) {
pr_perror("Unexpected error returned from unconnected socket");
goto err;
}
} else if (dump_sockaddr(&address, &sk->src_port, sk->src_addr))
goto err;
}
sk->sd.ino = p->stat.st_ino;
ret = do_dump_opt(lfd, SOL_SOCKET, SO_DOMAIN, &sk->sd.family, sizeof(sk->sd.family));
ret |= do_dump_opt(lfd, SOL_SOCKET, SO_TYPE, &sk->type, sizeof(sk->type));
if (ret)
goto err;
if (proto == IPPROTO_TCP) {
struct tcp_info info;