* [Qemu-devel] [PATCH v8 1/4] net/socket: Don't treat odd socket type as SOCK_STREAM
2017-07-05 11:01 [Qemu-devel] [PATCH v8 0/4] Improve error reporting Mao Zhongyi
@ 2017-07-05 11:01 ` Mao Zhongyi
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 2/4] net/socket: Convert several helper functions to Error Mao Zhongyi
` (2 subsequent siblings)
3 siblings, 0 replies; 13+ messages in thread
From: Mao Zhongyi @ 2017-07-05 11:01 UTC (permalink / raw)
To: qemu-devel; +Cc: jasowang, armbru, berrange, eblake
In net_socket_fd_init(), the 'default' case is odd: it warns,
then continues as if the socket type was SOCK_STREAM. The
comment explains "this could be a eg. a pty", but that makes
no sense. If @fd really was a pty, getsockopt() would fail
with ENOTSOCK. If @fd was a socket, but neither SOCK_DGRAM nor
SOCK_STREAM. It should not be treated as if it was SOCK_STREAM.
Turn this case into an Error. If there is a genuine reason to
support something like SOCK_RAW, it should be explicitly
handled.
Cc: jasowang@redhat.com
Cc: armbru@redhat.com
Cc: berrange@redhat.com
Cc: armbru@redhat.com
Cc: eblake@redhat.com
Suggested-by: Markus Armbruster <armbru@redhat.com>
Suggested-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
net/socket.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/socket.c b/net/socket.c
index dcae1ae..7d05e70 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -449,9 +449,9 @@ static NetSocketState *net_socket_fd_init(NetClientState *peer,
case SOCK_STREAM:
return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
default:
- /* who knows ... this could be a eg. a pty, do warn and continue as stream */
- fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
- return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
+ error_report("socket type=%d for fd=%d must be either"
+ " SOCK_DGRAM or SOCK_STREAM", so_type, fd);
+ closesocket(fd);
}
return NULL;
}
--
2.9.4
^ permalink raw reply related [flat|nested] 13+ messages in thread* [Qemu-devel] [PATCH v8 2/4] net/socket: Convert several helper functions to Error
2017-07-05 11:01 [Qemu-devel] [PATCH v8 0/4] Improve error reporting Mao Zhongyi
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 1/4] net/socket: Don't treat odd socket type as SOCK_STREAM Mao Zhongyi
@ 2017-07-05 11:01 ` Mao Zhongyi
2017-07-06 7:21 ` Markus Armbruster
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 3/4] net/net: Convert parse_host_port() " Mao Zhongyi
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 4/4] net/socket: Improve -net socket error reporting Mao Zhongyi
3 siblings, 1 reply; 13+ messages in thread
From: Mao Zhongyi @ 2017-07-05 11:01 UTC (permalink / raw)
To: qemu-devel; +Cc: jasowang, armbru, berrange
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>
---
net/socket.c | 80 ++++++++++++++++++++++++++++++++++++------------------------
1 file changed, 48 insertions(+), 32 deletions(-)
diff --git a/net/socket.c b/net/socket.c
index 7d05e70..3dd4459 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -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;
}
}
@@ -320,7 +328,8 @@ static NetClientInfo net_dgram_socket_info = {
static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
const char *model,
const char *name,
- int fd, int is_connected)
+ int fd, int is_connected,
+ Error **errp)
{
struct sockaddr_in saddr;
int newfd;
@@ -337,14 +346,12 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
/* 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 */
@@ -352,9 +359,7 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
close(newfd);
} else {
- fprintf(stderr,
- "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
- fd, strerror(errno));
+ error_setg_errno(errp, errno, "can't get socket name");
goto err;
}
}
@@ -432,20 +437,21 @@ 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)
+ int fd, int is_connected,
+ 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);
+ return net_socket_fd_init_dgram(peer, model, name, fd, is_connected,
+ errp);
case SOCK_STREAM:
return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
default:
@@ -536,6 +542,7 @@ 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;
@@ -567,9 +574,11 @@ static int net_socket_connect_init(NetClientState *peer,
break;
}
}
- s = net_socket_fd_init(peer, model, name, fd, connected);
- if (!s)
+ s = net_socket_fd_init(peer, model, name, fd, connected, &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));
@@ -586,6 +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;
@@ -598,13 +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);
- if (!s)
+ s = net_socket_fd_init(peer, model, name, fd, 0, &err);
+ if (!s) {
+ error_report_err(err);
return -1;
+ }
s->dgram_dst = saddr;
@@ -624,6 +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;
@@ -652,8 +667,9 @@ static int net_socket_udp_init(NetClientState *peer,
}
qemu_set_nonblock(fd);
- s = net_socket_fd_init(peer, model, name, fd, 0);
+ s = net_socket_fd_init(peer, model, name, fd, 0, &err);
if (!s) {
+ error_report_err(err);
return -1;
}
@@ -696,7 +712,7 @@ 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)) {
+ if (!net_socket_fd_init(peer, "socket", name, fd, 1, errp)) {
return -1;
}
return 0;
--
2.9.4
^ permalink raw reply related [flat|nested] 13+ messages in thread* [Qemu-devel] [PATCH v8 3/4] net/net: Convert parse_host_port() to Error
2017-07-05 11:01 [Qemu-devel] [PATCH v8 0/4] Improve error reporting Mao Zhongyi
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 1/4] net/socket: Don't treat odd socket type as SOCK_STREAM Mao Zhongyi
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 2/4] net/socket: Convert several helper functions to Error Mao Zhongyi
@ 2017-07-05 11:01 ` Mao Zhongyi
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 4/4] net/socket: Improve -net socket error reporting Mao Zhongyi
3 siblings, 0 replies; 13+ messages in thread
From: Mao Zhongyi @ 2017-07-05 11:01 UTC (permalink / raw)
To: qemu-devel; +Cc: berrange, kraxel, pbonzini, jasowang, armbru, eblake
Cc: berrange@redhat.com
Cc: kraxel@redhat.com
Cc: pbonzini@redhat.com
Cc: jasowang@redhat.com
Cc: armbru@redhat.com
Cc: eblake@redhat.com
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
include/qemu/sockets.h | 3 ++-
net/net.c | 22 +++++++++++++++++-----
net/socket.c | 19 ++++++++++++++-----
3 files changed, 33 insertions(+), 11 deletions(-)
diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h
index 5c326db..78e2b30 100644
--- a/include/qemu/sockets.h
+++ b/include/qemu/sockets.h
@@ -53,7 +53,8 @@ void socket_listen_cleanup(int fd, Error **errp);
int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp);
/* Old, ipv4 only bits. Don't use for new code. */
-int parse_host_port(struct sockaddr_in *saddr, const char *str);
+int parse_host_port(struct sockaddr_in *saddr, const char *str,
+ Error **errp);
int socket_init(void);
/**
diff --git a/net/net.c b/net/net.c
index 6235aab..77b6deb 100644
--- a/net/net.c
+++ b/net/net.c
@@ -100,7 +100,8 @@ static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
return 0;
}
-int parse_host_port(struct sockaddr_in *saddr, const char *str)
+int parse_host_port(struct sockaddr_in *saddr, const char *str,
+ Error **errp)
{
char buf[512];
struct hostent *he;
@@ -108,24 +109,35 @@ int parse_host_port(struct sockaddr_in *saddr, const char *str)
int port;
p = str;
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ error_setg(errp, "host address '%s' doesn't contain ':' "
+ "separating host from port", str);
return -1;
+ }
saddr->sin_family = AF_INET;
if (buf[0] == '\0') {
saddr->sin_addr.s_addr = 0;
} else {
if (qemu_isdigit(buf[0])) {
- if (!inet_aton(buf, &saddr->sin_addr))
+ if (!inet_aton(buf, &saddr->sin_addr)) {
+ error_setg(errp, "host address '%s' is not a valid "
+ "IPv4 address", buf);
return -1;
+ }
} else {
- if ((he = gethostbyname(buf)) == NULL)
+ he = gethostbyname(buf);
+ if (he == NULL) {
+ error_setg(errp, "can't resolve host address '%s'", buf);
return - 1;
+ }
saddr->sin_addr = *(struct in_addr *)he->h_addr;
}
}
port = strtol(p, (char **)&r, 0);
- if (r == p)
+ if (r == p) {
+ error_setg(errp, "port number '%s' is invalid", p);
return -1;
+ }
saddr->sin_port = htons(port);
return 0;
}
diff --git a/net/socket.c b/net/socket.c
index 3dd4459..1d4c515 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -497,9 +497,12 @@ static int net_socket_listen_init(NetClientState *peer,
NetSocketState *s;
struct sockaddr_in saddr;
int fd, ret;
+ Error *err = NULL;
- if (parse_host_port(&saddr, host_str) < 0)
+ if (parse_host_port(&saddr, host_str, &err) < 0) {
+ error_report_err(err);
return -1;
+ }
fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0) {
@@ -544,8 +547,10 @@ static int net_socket_connect_init(NetClientState *peer,
struct sockaddr_in saddr;
Error *err = NULL;
- if (parse_host_port(&saddr, host_str) < 0)
+ if (parse_host_port(&saddr, host_str, &err) < 0) {
+ error_report_err(err);
return -1;
+ }
fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0) {
@@ -597,8 +602,10 @@ static int net_socket_mcast_init(NetClientState *peer,
struct in_addr localaddr, *param_localaddr;
Error *err = NULL;
- if (parse_host_port(&saddr, host_str) < 0)
+ if (parse_host_port(&saddr, host_str, &err) < 0) {
+ error_report_err(err);
return -1;
+ }
if (localaddr_str != NULL) {
if (inet_aton(localaddr_str, &localaddr) == 0)
@@ -640,11 +647,13 @@ static int net_socket_udp_init(NetClientState *peer,
struct sockaddr_in laddr, raddr;
Error *err = NULL;
- if (parse_host_port(&laddr, lhost) < 0) {
+ if (parse_host_port(&laddr, lhost, &err) < 0) {
+ error_report_err(err);
return -1;
}
- if (parse_host_port(&raddr, rhost) < 0) {
+ if (parse_host_port(&raddr, rhost, &err) < 0) {
+ error_report_err(err);
return -1;
}
--
2.9.4
^ permalink raw reply related [flat|nested] 13+ messages in thread* [Qemu-devel] [PATCH v8 4/4] net/socket: Improve -net socket error reporting
2017-07-05 11:01 [Qemu-devel] [PATCH v8 0/4] Improve error reporting Mao Zhongyi
` (2 preceding siblings ...)
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 3/4] net/net: Convert parse_host_port() " Mao Zhongyi
@ 2017-07-05 11:01 ` Mao Zhongyi
2017-07-06 7:24 ` Markus Armbruster
3 siblings, 1 reply; 13+ messages in thread
From: Mao Zhongyi @ 2017-07-05 11:01 UTC (permalink / raw)
To: qemu-devel; +Cc: jasowang, armbru, berrange
When -net socket fails, it first reports a specific error, then
a generic one, like this:
$ qemu-system-x86_64 -net socket,
qemu-system-x86_64: -net socket: exactly one of fd=, listen=, connect=, mcast= or udp= is required
qemu-system-x86_64: -net socket: Device 'socket' could not be initialized
Convert net_socket_*_init() to Error to get rid of the superfluous second
error message. After the patch, the effect like this:
$ qemu-system-x86_64 -net socket,
qemu-system-x86_64: -net socket: exactly one of fd=, listen=, connect=, mcast= or udp= is required
At the same time, add many explicit error handling message when it fails.
Cc: jasowang@redhat.com
Cc: armbru@redhat.com
Cc: berrange@redhat.com
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
---
net/socket.c | 92 +++++++++++++++++++++++++++++-------------------------------
1 file changed, 44 insertions(+), 48 deletions(-)
diff --git a/net/socket.c b/net/socket.c
index 1d4c515..ca1878f 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -491,22 +491,21 @@ static void net_socket_accept(void *opaque)
static int net_socket_listen_init(NetClientState *peer,
const char *model,
const char *name,
- const char *host_str)
+ const char *host_str,
+ Error **errp)
{
NetClientState *nc;
NetSocketState *s;
struct sockaddr_in saddr;
int fd, ret;
- Error *err = NULL;
- if (parse_host_port(&saddr, host_str, &err) < 0) {
- error_report_err(err);
+ if (parse_host_port(&saddr, host_str, errp) < 0) {
return -1;
}
fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0) {
- perror("socket");
+ error_setg_errno(errp, errno, "can't create stream socket");
return -1;
}
qemu_set_nonblock(fd);
@@ -515,13 +514,14 @@ static int net_socket_listen_init(NetClientState *peer,
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
if (ret < 0) {
- perror("bind");
+ error_setg_errno(errp, errno, "can't bind ip=%s to socket",
+ inet_ntoa(saddr.sin_addr));
closesocket(fd);
return -1;
}
ret = listen(fd, 0);
if (ret < 0) {
- perror("listen");
+ error_setg_errno(errp, errno, "can't listen on socket");
closesocket(fd);
return -1;
}
@@ -540,21 +540,20 @@ static int net_socket_listen_init(NetClientState *peer,
static int net_socket_connect_init(NetClientState *peer,
const char *model,
const char *name,
- const char *host_str)
+ const char *host_str,
+ Error **errp)
{
NetSocketState *s;
int fd, connected, ret;
struct sockaddr_in saddr;
- Error *err = NULL;
- if (parse_host_port(&saddr, host_str, &err) < 0) {
- error_report_err(err);
+ if (parse_host_port(&saddr, host_str, errp) < 0) {
return -1;
}
fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0) {
- perror("socket");
+ error_setg_errno(errp, errno, "can't create stream socket");
return -1;
}
qemu_set_nonblock(fd);
@@ -570,7 +569,7 @@ static int net_socket_connect_init(NetClientState *peer,
errno == EINVAL) {
break;
} else {
- perror("connect");
+ error_setg_errno(errp, errno, "can't connect socket");
closesocket(fd);
return -1;
}
@@ -579,9 +578,8 @@ static int net_socket_connect_init(NetClientState *peer,
break;
}
}
- s = net_socket_fd_init(peer, model, name, fd, connected, &err);
+ s = net_socket_fd_init(peer, model, name, fd, connected, errp);
if (!s) {
- error_report_err(err);
return -1;
}
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
@@ -594,36 +592,36 @@ static int net_socket_mcast_init(NetClientState *peer,
const char *model,
const char *name,
const char *host_str,
- const char *localaddr_str)
+ const char *localaddr_str,
+ Error **errp)
{
NetSocketState *s;
int fd;
struct sockaddr_in saddr;
struct in_addr localaddr, *param_localaddr;
- Error *err = NULL;
- if (parse_host_port(&saddr, host_str, &err) < 0) {
- error_report_err(err);
+ if (parse_host_port(&saddr, host_str, errp) < 0) {
return -1;
}
if (localaddr_str != NULL) {
- if (inet_aton(localaddr_str, &localaddr) == 0)
+ if (inet_aton(localaddr_str, &localaddr) == 0) {
+ error_setg(errp, "localaddr '%s' is not a valid IPv4 address",
+ localaddr_str);
return -1;
+ }
param_localaddr = &localaddr;
} else {
param_localaddr = NULL;
}
- fd = net_socket_mcast_create(&saddr, param_localaddr, &err);
+ fd = net_socket_mcast_create(&saddr, param_localaddr, errp);
if (fd < 0) {
- error_report_err(err);
return -1;
}
- s = net_socket_fd_init(peer, model, name, fd, 0, &err);
+ s = net_socket_fd_init(peer, model, name, fd, 0, errp);
if (!s) {
- error_report_err(err);
return -1;
}
@@ -640,45 +638,45 @@ static int net_socket_udp_init(NetClientState *peer,
const char *model,
const char *name,
const char *rhost,
- const char *lhost)
+ const char *lhost,
+ Error **errp)
{
NetSocketState *s;
int fd, ret;
struct sockaddr_in laddr, raddr;
- Error *err = NULL;
- if (parse_host_port(&laddr, lhost, &err) < 0) {
- error_report_err(err);
+ if (parse_host_port(&laddr, lhost, errp) < 0) {
return -1;
}
- if (parse_host_port(&raddr, rhost, &err) < 0) {
- error_report_err(err);
+ if (parse_host_port(&raddr, rhost, errp) < 0) {
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;
}
ret = socket_set_fast_reuse(fd);
if (ret < 0) {
+ error_setg_errno(errp, errno,
+ "can't set socket option SO_REUSEADDR");
closesocket(fd);
return -1;
}
ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr));
if (ret < 0) {
- perror("bind");
+ error_setg_errno(errp, errno, "can't bind ip=%s to socket",
+ inet_ntoa(laddr.sin_addr));
closesocket(fd);
return -1;
}
qemu_set_nonblock(fd);
- s = net_socket_fd_init(peer, model, name, fd, 0, &err);
+ s = net_socket_fd_init(peer, model, name, fd, 0, errp);
if (!s) {
- error_report_err(err);
return -1;
}
@@ -693,8 +691,6 @@ static int net_socket_udp_init(NetClientState *peer,
int net_init_socket(const Netdev *netdev, const char *name,
NetClientState *peer, Error **errp)
{
- /* FIXME error_setg(errp, ...) on failure */
- Error *err = NULL;
const NetdevSocketOptions *sock;
assert(netdev->type == NET_CLIENT_DRIVER_SOCKET);
@@ -702,22 +698,21 @@ int net_init_socket(const Netdev *netdev, const char *name,
if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast +
sock->has_udp != 1) {
- error_report("exactly one of fd=, listen=, connect=, mcast= or udp="
- " is required");
+ error_setg(errp, "exactly one of fd=, listen=, connect=, mcast= or udp="
+ " is required");
return -1;
}
if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) {
- error_report("localaddr= is only valid with mcast= or udp=");
+ error_setg(errp, "localaddr= is only valid with mcast= or udp=");
return -1;
}
if (sock->has_fd) {
int fd;
- fd = monitor_fd_param(cur_mon, sock->fd, &err);
+ fd = monitor_fd_param(cur_mon, sock->fd, errp);
if (fd == -1) {
- error_report_err(err);
return -1;
}
qemu_set_nonblock(fd);
@@ -728,15 +723,16 @@ int net_init_socket(const Netdev *netdev, const char *name,
}
if (sock->has_listen) {
- if (net_socket_listen_init(peer, "socket", name, sock->listen) == -1) {
+ if (net_socket_listen_init(peer, "socket", name, sock->listen, errp)
+ < 0) {
return -1;
}
return 0;
}
if (sock->has_connect) {
- if (net_socket_connect_init(peer, "socket", name, sock->connect) ==
- -1) {
+ if (net_socket_connect_init(peer, "socket", name, sock->connect, errp)
+ < 0) {
return -1;
}
return 0;
@@ -746,7 +742,7 @@ int net_init_socket(const Netdev *netdev, const char *name,
/* if sock->localaddr is missing, it has been initialized to "all bits
* zero" */
if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
- sock->localaddr) == -1) {
+ sock->localaddr, errp) < 0) {
return -1;
}
return 0;
@@ -754,11 +750,11 @@ int net_init_socket(const Netdev *netdev, const char *name,
assert(sock->has_udp);
if (!sock->has_localaddr) {
- error_report("localaddr= is mandatory with udp=");
+ error_setg(errp, "localaddr= is mandatory with udp=");
return -1;
}
- if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr) ==
- -1) {
+ if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr,
+ errp) < 0) {
return -1;
}
return 0;
--
2.9.4
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [Qemu-devel] [PATCH v8 4/4] net/socket: Improve -net socket error reporting
2017-07-05 11:01 ` [Qemu-devel] [PATCH v8 4/4] net/socket: Improve -net socket error reporting Mao Zhongyi
@ 2017-07-06 7:24 ` Markus Armbruster
2017-07-06 8:07 ` Mao Zhongyi
0 siblings, 1 reply; 13+ messages in thread
From: Markus Armbruster @ 2017-07-06 7:24 UTC (permalink / raw)
To: Mao Zhongyi; +Cc: qemu-devel, jasowang
Mao Zhongyi <maozy.fnst@cn.fujitsu.com> writes:
> When -net socket fails, it first reports a specific error, then
> a generic one, like this:
>
> $ qemu-system-x86_64 -net socket,
> qemu-system-x86_64: -net socket: exactly one of fd=, listen=, connect=, mcast= or udp= is required
> qemu-system-x86_64: -net socket: Device 'socket' could not be initialized
>
> Convert net_socket_*_init() to Error to get rid of the superfluous second
> error message. After the patch, the effect like this:
>
> $ qemu-system-x86_64 -net socket,
> qemu-system-x86_64: -net socket: exactly one of fd=, listen=, connect=, mcast= or udp= is required
>
> At the same time, add many explicit error handling message when it fails.
Suggest "This also fixes a few silent failures to report an error."
Perhaps Jason can touch this up for you.
> Cc: jasowang@redhat.com
> Cc: armbru@redhat.com
> Cc: berrange@redhat.com
> Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
> ---
> net/socket.c | 92 +++++++++++++++++++++++++++++-------------------------------
> 1 file changed, 44 insertions(+), 48 deletions(-)
>
> diff --git a/net/socket.c b/net/socket.c
> index 1d4c515..ca1878f 100644
> --- a/net/socket.c
> +++ b/net/socket.c
[...]
> @@ -746,7 +742,7 @@ int net_init_socket(const Netdev *netdev, const char *name,
> /* if sock->localaddr is missing, it has been initialized to "all bits
> * zero" */
> if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
> - sock->localaddr) == -1) {
> + sock->localaddr, errp) < 0) {
Indent like this:
sock->localaddr, errp) < 0) {
Perhaps Jason can touch this up for you.
> return -1;
> }
> return 0;
> @@ -754,11 +750,11 @@ int net_init_socket(const Netdev *netdev, const char *name,
>
> assert(sock->has_udp);
> if (!sock->has_localaddr) {
> - error_report("localaddr= is mandatory with udp=");
> + error_setg(errp, "localaddr= is mandatory with udp=");
> return -1;
> }
> - if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr) ==
> - -1) {
> + if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr,
> + errp) < 0) {
Likewise.
> return -1;
> }
> return 0;
With the indentation fixed:
Reviewed-by: Markus Armbruster <armbru@redhat.com>
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [Qemu-devel] [PATCH v8 4/4] net/socket: Improve -net socket error reporting
2017-07-06 7:24 ` Markus Armbruster
@ 2017-07-06 8:07 ` Mao Zhongyi
0 siblings, 0 replies; 13+ messages in thread
From: Mao Zhongyi @ 2017-07-06 8:07 UTC (permalink / raw)
To: Markus Armbruster; +Cc: qemu-devel, jasowang
Hi, Markus
On 07/06/2017 03:24 PM, Markus Armbruster wrote:
> Mao Zhongyi <maozy.fnst@cn.fujitsu.com> writes:
>
>> When -net socket fails, it first reports a specific error, then
>> a generic one, like this:
>>
>> $ qemu-system-x86_64 -net socket,
>> qemu-system-x86_64: -net socket: exactly one of fd=, listen=, connect=, mcast= or udp= is required
>> qemu-system-x86_64: -net socket: Device 'socket' could not be initialized
>>
>> Convert net_socket_*_init() to Error to get rid of the superfluous second
>> error message. After the patch, the effect like this:
>>
>> $ qemu-system-x86_64 -net socket,
>> qemu-system-x86_64: -net socket: exactly one of fd=, listen=, connect=, mcast= or udp= is required
>>
>> At the same time, add many explicit error handling message when it fails.
>
> Suggest "This also fixes a few silent failures to report an error."
>
> Perhaps Jason can touch this up for you.
>
>> Cc: jasowang@redhat.com
>> Cc: armbru@redhat.com
>> Cc: berrange@redhat.com
>> Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
>> ---
>> net/socket.c | 92 +++++++++++++++++++++++++++++-------------------------------
>> 1 file changed, 44 insertions(+), 48 deletions(-)
>>
>> diff --git a/net/socket.c b/net/socket.c
>> index 1d4c515..ca1878f 100644
>> --- a/net/socket.c
>> +++ b/net/socket.c
> [...]
>> @@ -746,7 +742,7 @@ int net_init_socket(const Netdev *netdev, const char *name,
>> /* if sock->localaddr is missing, it has been initialized to "all bits
>> * zero" */
>> if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
>> - sock->localaddr) == -1) {
>> + sock->localaddr, errp) < 0) {
>
> Indent like this:
>
> sock->localaddr, errp) < 0) {
>
> Perhaps Jason can touch this up for you.
>
>> return -1;
>> }
>> return 0;
>> @@ -754,11 +750,11 @@ int net_init_socket(const Netdev *netdev, const char *name,
>>
>> assert(sock->has_udp);
>> if (!sock->has_localaddr) {
>> - error_report("localaddr= is mandatory with udp=");
>> + error_setg(errp, "localaddr= is mandatory with udp=");
>> return -1;
>> }
>> - if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr) ==
>> - -1) {
>> + if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr,
>> + errp) < 0) {
>
> Likewise.
>
>> return -1;
>> }
>> return 0;
>
> With the indentation fixed:
Thanks for your review :)
I will fix and resend it as soon as possible.
Thanks,
Mao
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
>
>
>
^ permalink raw reply [flat|nested] 13+ messages in thread