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net/socket: Convert several helper functions to Error 

Currently, net_socket_mcast_create(), net_socket_fd_init_dgram() and
net_socket_fd_init() use the function such as fprintf(), perror() to
report an error message.

Now, convert these functions to Error.

Cc: jasowang@redhat.com
Cc: armbru@redhat.com
Cc: berrange@redhat.com
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Mao Zhongyi 2017-09-04 22:35:38 +08:00 committed by Jason Wang
parent e1b24b649a
commit c37f0bb1d0
1 changed files with 50 additions and 32 deletions
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82
net/socket.c
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@ -209,7 +209,9 @@ static void net_socket_send_dgram(void *opaque)
}
}
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr *localaddr)
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr,
struct in_addr *localaddr,
Error **errp)
{
struct ip_mreq imr;
int fd;
@ -221,16 +223,16 @@ static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr
#endif
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) "
"does not contain a multicast address\n",
inet_ntoa(mcastaddr->sin_addr),
(int)ntohl(mcastaddr->sin_addr.s_addr));
error_setg(errp, "specified mcastaddr %s (0x%08x) "
"does not contain a multicast address",
inet_ntoa(mcastaddr->sin_addr),
(int)ntohl(mcastaddr->sin_addr.s_addr));
return -1;
}
fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
perror("socket(PF_INET, SOCK_DGRAM)");
error_setg_errno(errp, errno, "can't create datagram socket");
return -1;
}
@ -242,13 +244,15 @@ static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr
val = 1;
ret = qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
if (ret < 0) {
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
error_setg_errno(errp, errno,
"can't set socket option SO_REUSEADDR");
goto fail;
}
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
if (ret < 0) {
perror("bind");
error_setg_errno(errp, errno, "can't bind ip=%s to socket",
inet_ntoa(mcastaddr->sin_addr));
goto fail;
}
@ -263,7 +267,9 @@ static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr
ret = qemu_setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
&imr, sizeof(struct ip_mreq));
if (ret < 0) {
perror("setsockopt(IP_ADD_MEMBERSHIP)");
error_setg_errno(errp, errno,
"can't add socket to multicast group %s",
inet_ntoa(imr.imr_multiaddr));
goto fail;
}
@ -272,7 +278,8 @@ static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr
ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
&loop, sizeof(loop));
if (ret < 0) {
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
error_setg_errno(errp, errno,
"can't force multicast message to loopback");
goto fail;
}
@ -281,7 +288,8 @@ static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr
ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
localaddr, sizeof(*localaddr));
if (ret < 0) {
perror("setsockopt(IP_MULTICAST_IF)");
error_setg_errno(errp, errno,
"can't set the default network send interface");
goto fail;
}
}
@ -321,7 +329,8 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
const char *model,
const char *name,
int fd, int is_connected,
const char *mcast)
const char *mcast,
Error **errp)
{
struct sockaddr_in saddr;
int newfd;
@ -335,21 +344,17 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
if (is_connected && mcast != NULL) {
if (parse_host_port(&saddr, mcast) < 0) {
fprintf(stderr,
"qemu: error: init_dgram: fd=%d failed parse_host_port()\n",
fd);
error_setg(errp, "fd=%d failed parse_host_port()", fd);
goto err;
}
/* must be bound */
if (saddr.sin_addr.s_addr == 0) {
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, "
"cannot setup multicast dst addr\n", fd);
error_setg(errp, "can't setup multicast destination address");
goto err;
}
/* clone dgram socket */
newfd = net_socket_mcast_create(&saddr, NULL);
newfd = net_socket_mcast_create(&saddr, NULL, errp);
if (newfd < 0) {
/* error already reported by net_socket_mcast_create() */
goto err;
}
/* clone newfd to fd, close newfd */
@ -431,20 +436,21 @@ static NetSocketState *net_socket_fd_init_stream(NetClientState *peer,
static NetSocketState *net_socket_fd_init(NetClientState *peer,
const char *model, const char *name,
int fd, int is_connected, const char *mc)
int fd, int is_connected,
const char *mc, Error **errp)
{
int so_type = -1, optlen=sizeof(so_type);
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
(socklen_t *)&optlen)< 0) {
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n",
fd);
error_setg(errp, "can't get socket option SO_TYPE");
closesocket(fd);
return NULL;
}
switch(so_type) {
case SOCK_DGRAM:
return net_socket_fd_init_dgram(peer, model, name, fd, is_connected, mc);
return net_socket_fd_init_dgram(peer, model, name, fd, is_connected,
mc, errp);
case SOCK_STREAM:
return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
default:
@ -535,6 +541,7 @@ static int net_socket_connect_init(NetClientState *peer,
NetSocketState *s;
int fd, connected, ret;
struct sockaddr_in saddr;
Error *err = NULL;
if (parse_host_port(&saddr, host_str) < 0)
return -1;
@ -566,9 +573,12 @@ static int net_socket_connect_init(NetClientState *peer,
break;
}
}
s = net_socket_fd_init(peer, model, name, fd, connected, NULL);
if (!s)
s = net_socket_fd_init(peer, model, name, fd, connected, NULL, &err);
if (!s) {
error_report_err(err);
return -1;
}
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
"socket: connect to %s:%d",
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
@ -585,6 +595,7 @@ static int net_socket_mcast_init(NetClientState *peer,
int fd;
struct sockaddr_in saddr;
struct in_addr localaddr, *param_localaddr;
Error *err = NULL;
if (parse_host_port(&saddr, host_str) < 0)
return -1;
@ -597,13 +608,17 @@ static int net_socket_mcast_init(NetClientState *peer,
param_localaddr = NULL;
}
fd = net_socket_mcast_create(&saddr, param_localaddr);
if (fd < 0)
fd = net_socket_mcast_create(&saddr, param_localaddr, &err);
if (fd < 0) {
error_report_err(err);
return -1;
}
s = net_socket_fd_init(peer, model, name, fd, 0, NULL);
if (!s)
s = net_socket_fd_init(peer, model, name, fd, 0, NULL, &err);
if (!s) {
error_report_err(err);
return -1;
}
s->dgram_dst = saddr;
@ -623,6 +638,7 @@ static int net_socket_udp_init(NetClientState *peer,
NetSocketState *s;
int fd, ret;
struct sockaddr_in laddr, raddr;
Error *err = NULL;
if (parse_host_port(&laddr, lhost) < 0) {
return -1;
@ -651,8 +667,9 @@ static int net_socket_udp_init(NetClientState *peer,
}
qemu_set_nonblock(fd);
s = net_socket_fd_init(peer, model, name, fd, 0, NULL);
s = net_socket_fd_init(peer, model, name, fd, 0, NULL, &err);
if (!s) {
error_report_err(err);
return -1;
}
@ -695,7 +712,8 @@ int net_init_socket(const Netdev *netdev, const char *name,
return -1;
}
qemu_set_nonblock(fd);
if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast)) {
if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast,
errp)) {
return -1;
}
return 0;