socket: unlink unix socket on remove
qemu leaves unix socket files behind when removing a listening chardev or leaving. qemu could clean that up, even if doing so isn't race-free. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1347077 Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1466105332-10285-4-git-send-email-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error **errp);
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int socket_connect(SocketAddress *addr, Error **errp,
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int socket_connect(SocketAddress *addr, Error **errp,
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NonBlockingConnectHandler *callback, void *opaque);
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NonBlockingConnectHandler *callback, void *opaque);
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int socket_listen(SocketAddress *addr, Error **errp);
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int socket_listen(SocketAddress *addr, Error **errp);
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void socket_listen_cleanup(int fd, Error **errp);
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int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp);
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int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp);
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/* Old, ipv4 only bits. Don't use for new code. */
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/* Old, ipv4 only bits. Don't use for new code. */
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@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj)
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static void qio_channel_socket_finalize(Object *obj)
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static void qio_channel_socket_finalize(Object *obj)
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{
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{
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QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj);
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QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj);
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if (ioc->fd != -1) {
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if (ioc->fd != -1) {
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if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) {
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Error *err = NULL;
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socket_listen_cleanup(ioc->fd, &err);
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if (err) {
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error_report_err(err);
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err = NULL;
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}
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}
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#ifdef WIN32
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#ifdef WIN32
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WSAEventSelect(ioc->fd, NULL, 0);
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WSAEventSelect(ioc->fd, NULL, 0);
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#endif
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#endif
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@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async)
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qapi_free_SocketAddress(listen_addr);
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qapi_free_SocketAddress(listen_addr);
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qapi_free_SocketAddress(connect_addr);
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qapi_free_SocketAddress(connect_addr);
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unlink(TEST_SOCKET);
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g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE);
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}
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}
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@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp)
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return fd;
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return fd;
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}
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}
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void socket_listen_cleanup(int fd, Error **errp)
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{
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SocketAddress *addr;
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addr = socket_local_address(fd, errp);
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if (addr->type == SOCKET_ADDRESS_KIND_UNIX
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&& addr->u.q_unix.data->path) {
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if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) {
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error_setg_errno(errp, errno,
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"Failed to unlink socket %s",
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addr->u.q_unix.data->path);
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}
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}
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g_free(addr);
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}
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int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp)
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int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp)
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{
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{
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int fd;
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int fd;
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