From 0399293e5b9e5443b82103fa8e2c97deadef9825 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 3 Mar 2016 09:16:48 -0700 Subject: [PATCH] util: Shorten references into SocketAddress An upcoming patch will alter how simple unions, like SocketAddress, are laid out, which will impact all lines of the form 'addr->u.XXX' (expanding it to the longer 'addr->u.XXX.data'). For better legibility in that patch, and less need for line wrapping, it's better to use a temporary variable to reduce the effect of a layout change to just the variable initializations, rather than every reference within a SocketAddress. Also, take advantage of some C99 initialization where it makes sense (simplifying g_new0() to g_new()). Signed-off-by: Eric Blake Message-Id: <1457021813-10704-7-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster --- block/nbd.c | 14 +++++----- qemu-char.c | 49 +++++++++++++++++++--------------- qemu-nbd.c | 9 ++++--- tests/test-io-channel-socket.c | 34 ++++++++++++++--------- ui/vnc.c | 39 ++++++++++++++------------- util/qemu-sockets.c | 11 ++++---- 6 files changed, 88 insertions(+), 68 deletions(-) diff --git a/block/nbd.c b/block/nbd.c index db57b4951c..9f333c9b11 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -204,18 +204,20 @@ static SocketAddress *nbd_config(BDRVNBDState *s, QDict *options, char **export, saddr = g_new0(SocketAddress, 1); if (qdict_haskey(options, "path")) { + UnixSocketAddress *q_unix; saddr->type = SOCKET_ADDRESS_KIND_UNIX; - saddr->u.q_unix = g_new0(UnixSocketAddress, 1); - saddr->u.q_unix->path = g_strdup(qdict_get_str(options, "path")); + q_unix = saddr->u.q_unix = g_new0(UnixSocketAddress, 1); + q_unix->path = g_strdup(qdict_get_str(options, "path")); qdict_del(options, "path"); } else { + InetSocketAddress *inet; saddr->type = SOCKET_ADDRESS_KIND_INET; - saddr->u.inet = g_new0(InetSocketAddress, 1); - saddr->u.inet->host = g_strdup(qdict_get_str(options, "host")); + inet = saddr->u.inet = g_new0(InetSocketAddress, 1); + inet->host = g_strdup(qdict_get_str(options, "host")); if (!qdict_get_try_str(options, "port")) { - saddr->u.inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); + inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); } else { - saddr->u.inet->port = g_strdup(qdict_get_str(options, "port")); + inet->port = g_strdup(qdict_get_str(options, "port")); } qdict_del(options, "host"); qdict_del(options, "port"); diff --git a/qemu-char.c b/qemu-char.c index 5ea1d349b6..af311023d6 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -3659,20 +3659,23 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, addr = g_new0(SocketAddress, 1); if (path) { + UnixSocketAddress *q_unix; addr->type = SOCKET_ADDRESS_KIND_UNIX; - addr->u.q_unix = g_new0(UnixSocketAddress, 1); - addr->u.q_unix->path = g_strdup(path); + q_unix = addr->u.q_unix = g_new0(UnixSocketAddress, 1); + q_unix->path = g_strdup(path); } else { addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet = g_new0(InetSocketAddress, 1); - addr->u.inet->host = g_strdup(host); - addr->u.inet->port = g_strdup(port); - addr->u.inet->has_to = qemu_opt_get(opts, "to"); - addr->u.inet->to = qemu_opt_get_number(opts, "to", 0); - addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4"); - addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0); - addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6"); - addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0); + addr->u.inet = g_new(InetSocketAddress, 1); + *addr->u.inet = (InetSocketAddress) { + .host = g_strdup(host), + .port = g_strdup(port), + .has_to = qemu_opt_get(opts, "to"), + .to = qemu_opt_get_number(opts, "to", 0), + .has_ipv4 = qemu_opt_get(opts, "ipv4"), + .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), + .has_ipv6 = qemu_opt_get(opts, "ipv6"), + .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), + }; } sock->addr = addr; } @@ -3711,22 +3714,26 @@ static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend, addr = g_new0(SocketAddress, 1); addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet = g_new0(InetSocketAddress, 1); - addr->u.inet->host = g_strdup(host); - addr->u.inet->port = g_strdup(port); - addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4"); - addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0); - addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6"); - addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0); + addr->u.inet = g_new(InetSocketAddress, 1); + *addr->u.inet = (InetSocketAddress) { + .host = g_strdup(host), + .port = g_strdup(port), + .has_ipv4 = qemu_opt_get(opts, "ipv4"), + .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), + .has_ipv6 = qemu_opt_get(opts, "ipv6"), + .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), + }; udp->remote = addr; if (has_local) { udp->has_local = true; addr = g_new0(SocketAddress, 1); addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet = g_new0(InetSocketAddress, 1); - addr->u.inet->host = g_strdup(localaddr); - addr->u.inet->port = g_strdup(localport); + addr->u.inet = g_new(InetSocketAddress, 1); + *addr->u.inet = (InetSocketAddress) { + .host = g_strdup(localaddr), + .port = g_strdup(localport), + }; udp->local = addr; } } diff --git a/qemu-nbd.c b/qemu-nbd.c index 5fe94d0e7b..a5c1d95344 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -380,13 +380,14 @@ static SocketAddress *nbd_build_socket_address(const char *sockpath, saddr->u.q_unix = g_new0(UnixSocketAddress, 1); saddr->u.q_unix->path = g_strdup(sockpath); } else { + InetSocketAddress *inet; saddr->type = SOCKET_ADDRESS_KIND_INET; - saddr->u.inet = g_new0(InetSocketAddress, 1); - saddr->u.inet->host = g_strdup(bindto); + inet = saddr->u.inet = g_new0(InetSocketAddress, 1); + inet->host = g_strdup(bindto); if (port) { - saddr->u.inet->port = g_strdup(port); + inet->port = g_strdup(port); } else { - saddr->u.inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); + inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); } } diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c index 069736373c..8a34056670 100644 --- a/tests/test-io-channel-socket.c +++ b/tests/test-io-channel-socket.c @@ -1,7 +1,7 @@ /* * QEMU I/O channel sockets test * - * Copyright (c) 2015 Red Hat, Inc. + * Copyright (c) 2015-2016 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -283,14 +283,18 @@ static void test_io_channel_ipv4(bool async) SocketAddress *connect_addr = g_new0(SocketAddress, 1); listen_addr->type = SOCKET_ADDRESS_KIND_INET; - listen_addr->u.inet = g_new0(InetSocketAddress, 1); - listen_addr->u.inet->host = g_strdup("127.0.0.1"); - listen_addr->u.inet->port = NULL; /* Auto-select */ + listen_addr->u.inet = g_new(InetSocketAddress, 1); + *listen_addr->u.inet = (InetSocketAddress) { + .host = g_strdup("127.0.0.1"), + .port = NULL, /* Auto-select */ + }; connect_addr->type = SOCKET_ADDRESS_KIND_INET; - connect_addr->u.inet = g_new0(InetSocketAddress, 1); - connect_addr->u.inet->host = g_strdup("127.0.0.1"); - connect_addr->u.inet->port = NULL; /* Filled in later */ + connect_addr->u.inet = g_new(InetSocketAddress, 1); + *connect_addr->u.inet = (InetSocketAddress) { + .host = g_strdup("127.0.0.1"), + .port = NULL, /* Filled in later */ + }; test_io_channel(async, listen_addr, connect_addr, false); @@ -317,14 +321,18 @@ static void test_io_channel_ipv6(bool async) SocketAddress *connect_addr = g_new0(SocketAddress, 1); listen_addr->type = SOCKET_ADDRESS_KIND_INET; - listen_addr->u.inet = g_new0(InetSocketAddress, 1); - listen_addr->u.inet->host = g_strdup("::1"); - listen_addr->u.inet->port = NULL; /* Auto-select */ + listen_addr->u.inet = g_new(InetSocketAddress, 1); + *listen_addr->u.inet = (InetSocketAddress) { + .host = g_strdup("::1"), + .port = NULL, /* Auto-select */ + }; connect_addr->type = SOCKET_ADDRESS_KIND_INET; - connect_addr->u.inet = g_new0(InetSocketAddress, 1); - connect_addr->u.inet->host = g_strdup("::1"); - connect_addr->u.inet->port = NULL; /* Filled in later */ + connect_addr->u.inet = g_new(InetSocketAddress, 1); + *connect_addr->u.inet = (InetSocketAddress) { + .host = g_strdup("::1"), + .port = NULL, /* Filled in later */ + }; test_io_channel(async, listen_addr, connect_addr, false); diff --git a/ui/vnc.c b/ui/vnc.c index ce4c669ec9..6cd63141c4 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -3530,12 +3530,13 @@ void vnc_display_open(const char *id, Error **errp) } } else { unsigned long long baseport; + InetSocketAddress *inet; saddr->type = SOCKET_ADDRESS_KIND_INET; - saddr->u.inet = g_new0(InetSocketAddress, 1); + inet = saddr->u.inet = g_new0(InetSocketAddress, 1); if (vnc[0] == '[' && vnc[hlen - 1] == ']') { - saddr->u.inet->host = g_strndup(vnc + 1, hlen - 2); + inet->host = g_strndup(vnc + 1, hlen - 2); } else { - saddr->u.inet->host = g_strndup(vnc, hlen); + inet->host = g_strndup(vnc, hlen); } if (parse_uint_full(h + 1, &baseport, 10) < 0) { error_setg(errp, "can't convert to a number: %s", h + 1); @@ -3546,32 +3547,32 @@ void vnc_display_open(const char *id, Error **errp) error_setg(errp, "port %s out of range", h + 1); goto fail; } - saddr->u.inet->port = g_strdup_printf( + inet->port = g_strdup_printf( "%d", (int)baseport + 5900); if (to) { - saddr->u.inet->has_to = true; - saddr->u.inet->to = to + 5900; + inet->has_to = true; + inet->to = to + 5900; } - saddr->u.inet->ipv4 = ipv4; - saddr->u.inet->has_ipv4 = has_ipv4; - saddr->u.inet->ipv6 = ipv6; - saddr->u.inet->has_ipv6 = has_ipv6; + inet->ipv4 = ipv4; + inet->has_ipv4 = has_ipv4; + inet->ipv6 = ipv6; + inet->has_ipv6 = has_ipv6; if (vs->ws_enabled) { wsaddr->type = SOCKET_ADDRESS_KIND_INET; - wsaddr->u.inet = g_new0(InetSocketAddress, 1); - wsaddr->u.inet->host = g_strdup(saddr->u.inet->host); - wsaddr->u.inet->port = g_strdup(websocket); + inet = wsaddr->u.inet = g_new0(InetSocketAddress, 1); + inet->host = g_strdup(saddr->u.inet->host); + inet->port = g_strdup(websocket); if (to) { - wsaddr->u.inet->has_to = true; - wsaddr->u.inet->to = to; + inet->has_to = true; + inet->to = to; } - wsaddr->u.inet->ipv4 = ipv4; - wsaddr->u.inet->has_ipv4 = has_ipv4; - wsaddr->u.inet->ipv6 = ipv6; - wsaddr->u.inet->has_ipv6 = has_ipv6; + inet->ipv4 = ipv4; + inet->has_ipv4 = has_ipv4; + inet->ipv6 = ipv6; + inet->has_ipv6 = has_ipv6; } } } else { diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index 557da20bf2..ad7c00c9ad 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -1003,6 +1003,7 @@ socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, char host[NI_MAXHOST]; char serv[NI_MAXSERV]; SocketAddress *addr; + InetSocketAddress *inet; int ret; ret = getnameinfo((struct sockaddr *)sa, salen, @@ -1017,13 +1018,13 @@ socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, addr = g_new0(SocketAddress, 1); addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet = g_new0(InetSocketAddress, 1); - addr->u.inet->host = g_strdup(host); - addr->u.inet->port = g_strdup(serv); + inet = addr->u.inet = g_new0(InetSocketAddress, 1); + inet->host = g_strdup(host); + inet->port = g_strdup(serv); if (sa->ss_family == AF_INET) { - addr->u.inet->has_ipv4 = addr->u.inet->ipv4 = true; + inet->has_ipv4 = inet->ipv4 = true; } else { - addr->u.inet->has_ipv6 = addr->u.inet->ipv6 = true; + inet->has_ipv6 = inet->ipv6 = true; } return addr;