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[Qemu-devel] [PATCH for-2.7 1/2] net: fix socket connect
From: |
Marc-André Lureau |
Subject: |
[Qemu-devel] [PATCH for-2.7 1/2] net: fix socket connect |
Date: |
Tue, 23 Aug 2016 13:45:36 +0400 |
Commit 7e8449594c929 changed net socket code to use socket_*() functions
from include/qemu/sockets.h. However, the change broke the connection
part, because socket_connect() returns a connected socket that is
being ignored. Use socket_connect() return value appropriately and fix
leaks on error path.
Note that after this change, the function is still blocking.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1368447
Signed-off-by: Marc-André Lureau <address@hidden>
---
net/socket.c | 54 +++++++++++++++++++++++-------------------------------
1 file changed, 23 insertions(+), 31 deletions(-)
diff --git a/net/socket.c b/net/socket.c
index 17e635d..645bcb0 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -501,6 +501,7 @@ static int net_socket_listen_init(NetClientState *peer,
ret = socket_listen(saddr, &local_error);
if (ret < 0) {
+ qapi_free_SocketAddress(saddr);
error_report_err(local_error);
return -1;
}
@@ -522,9 +523,9 @@ static int net_socket_connect_init(NetClientState *peer,
const char *host_str)
{
NetSocketState *s;
- int fd, connected, ret;
- char *addr_str;
- SocketAddress *saddr;
+ int fd = -1, ret = -1;
+ char *addr_str = NULL;
+ SocketAddress *saddr = NULL;
Error *local_error = NULL;
saddr = socket_parse(host_str, &local_error);
@@ -533,45 +534,36 @@ static int net_socket_connect_init(NetClientState *peer,
return -1;
}
- fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
+ fd = socket_connect(saddr, &local_error, NULL, NULL);
if (fd < 0) {
- perror("socket");
- return -1;
+ error_report_err(local_error);
+ goto end;
}
+
qemu_set_nonblock(fd);
- connected = 0;
- for(;;) {
- ret = socket_connect(saddr, &local_error, NULL, NULL);
- if (ret < 0) {
- if (errno == EINTR || errno == EWOULDBLOCK) {
- /* continue */
- } else if (errno == EINPROGRESS ||
- errno == EALREADY ||
- errno == EINVAL) {
- break;
- } else {
- error_report_err(local_error);
- closesocket(fd);
- return -1;
- }
- } else {
- connected = 1;
- break;
- }
+
+ s = net_socket_fd_init(peer, model, name, fd, true);
+ if (!s) {
+ goto end;
}
- s = net_socket_fd_init(peer, model, name, fd, connected);
- if (!s)
- return -1;
addr_str = socket_address_to_string(saddr, &local_error);
- if (addr_str == NULL)
- return -1;
+ if (addr_str == NULL) {
+ error_report_err(local_error);
+ goto end;
+ }
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
"socket: connect to %s", addr_str);
+ ret = 0;
+
+end:
+ if (ret == -1 && fd >= 0) {
+ closesocket(fd);
+ }
qapi_free_SocketAddress(saddr);
g_free(addr_str);
- return 0;
+ return ret;
}
static int net_socket_mcast_init(NetClientState *peer,
--
2.9.0