diff options
author | Corey Minyard <cminyard@mvista.com> | 2014-10-02 11:17:34 -0500 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-10-04 08:59:14 +0200 |
commit | 43ded1a0d2381e65f0fff28269b7d02d4ead6aac (patch) | |
tree | e3f90b48f2f495d7231d66630eca29b5c5260fdb /qemu-char.c | |
parent | 9f781168c5d4d2640be89b53a41443d4f368f489 (diff) | |
download | qemu-43ded1a0d2381e65f0fff28269b7d02d4ead6aac.zip qemu-43ded1a0d2381e65f0fff28269b7d02d4ead6aac.tar.gz qemu-43ded1a0d2381e65f0fff28269b7d02d4ead6aac.tar.bz2 |
qemu-char: Rework qemu_chr_open_socket() for reconnect
Move all socket configuration to qmp_chardev_open_socket().
qemu_chr_open_socket_fd() just opens the socket. This is getting ready
for the reconnect code, which will call open_sock_fd() on a reconnect
attempt.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qemu-char.c')
-rw-r--r-- | qemu-char.c | 118 |
1 files changed, 68 insertions, 50 deletions
diff --git a/qemu-char.c b/qemu-char.c index f9d2a02..dcfeb73 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -2891,13 +2891,11 @@ static void tcp_chr_close(CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, - bool is_listen, bool is_telnet, - bool is_waitconnect, - Error **errp) +static bool qemu_chr_finish_socket_connection(CharDriverState *chr, int fd, + bool is_listen, bool is_telnet, + Error **errp) { - CharDriverState *chr = NULL; - TCPCharDriver *s = NULL; + TCPCharDriver *s = chr->opaque; char host[NI_MAXHOST], serv[NI_MAXSERV]; const char *left = "", *right = ""; struct sockaddr_storage ss; @@ -2905,26 +2903,14 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, memset(&ss, 0, ss_len); if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) { + closesocket(fd); error_setg_errno(errp, errno, "getsockname"); - return NULL; + return false; } - chr = qemu_chr_alloc(); - s = g_malloc0(sizeof(TCPCharDriver)); - - s->connected = 0; - s->fd = -1; - s->listen_fd = -1; - s->read_msgfds = 0; - s->read_msgfds_num = 0; - s->write_msgfds = 0; - s->write_msgfds_num = 0; - - chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE); switch (ss.ss_family) { #ifndef _WIN32 case AF_UNIX: - s->is_unix = 1; snprintf(chr->filename, CHR_MAX_FILENAME_SIZE, "unix:%s%s", ((struct sockaddr_un *)(&ss))->sun_path, is_listen ? ",server" : ""); @@ -2935,7 +2921,6 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, right = "]"; /* fall through */ case AF_INET: - s->do_nodelay = do_nodelay; getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host), serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV); snprintf(chr->filename, CHR_MAX_FILENAME_SIZE, "%s:%s%s%s:%s%s", @@ -2945,25 +2930,11 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, break; } - chr->opaque = s; - chr->chr_write = tcp_chr_write; - chr->chr_sync_read = tcp_chr_sync_read; - chr->chr_close = tcp_chr_close; - chr->get_msgfds = tcp_get_msgfds; - chr->set_msgfds = tcp_set_msgfds; - chr->chr_add_client = tcp_chr_add_client; - chr->chr_add_watch = tcp_chr_add_watch; - chr->chr_update_read_handler = tcp_chr_update_read_handler; - /* be isn't opened until we get a connection */ - chr->explicit_be_open = true; - if (is_listen) { s->listen_fd = fd; s->listen_chan = io_channel_from_socket(s->listen_fd); - s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr); - if (is_telnet) { - s->do_telnetopt = 1; - } + s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, + tcp_chr_accept, chr); } else { s->connected = 1; s->fd = fd; @@ -2972,13 +2943,26 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, tcp_chr_connect(chr); } - if (is_listen && is_waitconnect) { - fprintf(stderr, "QEMU waiting for connection on: %s\n", - chr->filename); - tcp_chr_accept(s->listen_chan, G_IO_IN, chr); - qemu_set_nonblock(s->listen_fd); + return true; +} + +static bool qemu_chr_open_socket_fd(CharDriverState *chr, SocketAddress *addr, + bool is_listen, bool is_telnet, + Error **errp) +{ + int fd; + + if (is_listen) { + fd = socket_listen(addr, errp); + } else { + fd = socket_connect(addr, errp, NULL, NULL); } - return chr; + if (fd < 0) { + return false; + } + + return qemu_chr_finish_socket_connection(chr, fd, is_listen, is_telnet, + errp); } /*********************************************************/ @@ -3969,23 +3953,57 @@ static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel, static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock, Error **errp) { + CharDriverState *chr; + TCPCharDriver *s; SocketAddress *addr = sock->addr; bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; bool is_listen = sock->has_server ? sock->server : true; bool is_telnet = sock->has_telnet ? sock->telnet : false; bool is_waitconnect = sock->has_wait ? sock->wait : false; - int fd; + + chr = qemu_chr_alloc(); + s = g_malloc0(sizeof(TCPCharDriver)); + + s->fd = -1; + s->listen_fd = -1; + s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX; + s->do_nodelay = do_nodelay; + + chr->opaque = s; + chr->chr_write = tcp_chr_write; + chr->chr_sync_read = tcp_chr_sync_read; + chr->chr_close = tcp_chr_close; + chr->get_msgfds = tcp_get_msgfds; + chr->set_msgfds = tcp_set_msgfds; + chr->chr_add_client = tcp_chr_add_client; + chr->chr_add_watch = tcp_chr_add_watch; + chr->chr_update_read_handler = tcp_chr_update_read_handler; + /* be isn't opened until we get a connection */ + chr->explicit_be_open = true; + + chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE); if (is_listen) { - fd = socket_listen(addr, errp); - } else { - fd = socket_connect(addr, errp, NULL, NULL); + if (is_telnet) { + s->do_telnetopt = 1; + } } - if (fd < 0) { + + if (!qemu_chr_open_socket_fd(chr, addr, is_listen, is_telnet, errp)) { + g_free(s); + g_free(chr->filename); + g_free(chr); return NULL; } - return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, - is_telnet, is_waitconnect, errp); + + if (is_listen && is_waitconnect) { + fprintf(stderr, "QEMU waiting for connection on: %s\n", + chr->filename); + tcp_chr_accept(s->listen_chan, G_IO_IN, chr); + qemu_set_nonblock(s->listen_fd); + } + + return chr; } static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp, |