From e93a68e102ffc8f8316ce24a57f094734dc4d8f7 Mon Sep 17 00:00:00 2001 From: "Daniel P. Berrange" Date: Fri, 30 Sep 2016 11:57:14 +0100 Subject: [PATCH] char: set name for all I/O channels created Ensure that all I/O channels created for character devices are given names to distinguish their respective roles. Acked-by: Paolo Bonzini Reviewed-by: Stefan Hajnoczi Signed-off-by: Daniel P. Berrange --- include/glib-compat.h | 4 +++ qemu-char.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++----- 2 files changed, 74 insertions(+), 7 deletions(-) diff --git a/include/glib-compat.h b/include/glib-compat.h index 9dfe952c5d..3f8370b3e4 100644 --- a/include/glib-compat.h +++ b/include/glib-compat.h @@ -309,6 +309,10 @@ static inline void g_source_set_name(GSource *source, const char *name) { /* This is just a debugging aid, so leaving it a no-op */ } +static inline void g_source_set_name_by_id(guint tag, const char *name) +{ + /* This is just a debugging aid, so leaving it a no-op */ +} #endif #endif diff --git a/qemu-char.c b/qemu-char.c index d83a89618e..4d0986ced3 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -934,7 +934,8 @@ static GSourceFuncs io_watch_poll_funcs = { }; /* Can only be used for read */ -static guint io_add_watch_poll(QIOChannel *ioc, +static guint io_add_watch_poll(CharDriverState *chr, + QIOChannel *ioc, IOCanReadHandler *fd_can_read, QIOChannelFunc fd_read, gpointer user_data, @@ -942,6 +943,7 @@ static guint io_add_watch_poll(QIOChannel *ioc, { IOWatchPoll *iwp; int tag; + char *name; iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll)); @@ -952,6 +954,10 @@ static guint io_add_watch_poll(QIOChannel *ioc, iwp->src = NULL; iwp->context = context; + name = g_strdup_printf("chardev-iowatch-%s", chr->label); + g_source_set_name((GSource *)iwp, name); + g_free(name); + tag = g_source_attach(&iwp->parent, context); g_source_unref(&iwp->parent); return tag; @@ -1091,7 +1097,7 @@ static void fd_chr_update_read_handler(CharDriverState *chr, remove_fd_in_watch(chr); if (s->ioc_in) { - chr->fd_in_tag = io_add_watch_poll(s->ioc_in, + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in, fd_chr_read_poll, fd_chr_read, chr, context); @@ -1120,6 +1126,7 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out, { CharDriverState *chr; FDCharDriver *s; + char *name; chr = qemu_chr_alloc(backend, errp); if (!chr) { @@ -1127,7 +1134,13 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out, } s = g_new0(FDCharDriver, 1); s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); + name = g_strdup_printf("chardev-file-in-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); + g_free(name); s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); + name = g_strdup_printf("chardev-file-out-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); + g_free(name); qemu_set_nonblock(fd_out); s->chr = chr; chr->opaque = s; @@ -1305,6 +1318,7 @@ static gboolean pty_chr_timer(gpointer opaque) static void pty_chr_rearm_timer(CharDriverState *chr, int ms) { PtyCharDriver *s = chr->opaque; + char *name; if (s->timer_tag) { g_source_remove(s->timer_tag); @@ -1312,10 +1326,14 @@ static void pty_chr_rearm_timer(CharDriverState *chr, int ms) } if (ms == 1000) { + name = g_strdup_printf("pty-timer-secs-%s", chr->label); s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); } else { + name = g_strdup_printf("pty-timer-ms-%s", chr->label); s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); } + g_source_set_name_by_id(s->timer_tag, name); + g_free(name); } /* Called with chr_write_lock held. */ @@ -1444,7 +1462,7 @@ static void pty_chr_state(CharDriverState *chr, int connected) s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr); } if (!chr->fd_in_tag) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, pty_chr_read_poll, pty_chr_read, chr, NULL); @@ -1478,6 +1496,7 @@ static CharDriverState *qemu_chr_open_pty(const char *id, int master_fd, slave_fd; char pty_name[PATH_MAX]; ChardevCommon *common = backend->u.pty.data; + char *name; master_fd = qemu_openpty_raw(&slave_fd, pty_name); if (master_fd < 0) { @@ -1510,6 +1529,9 @@ static CharDriverState *qemu_chr_open_pty(const char *id, chr->explicit_be_open = true; s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); + name = g_strdup_printf("chardev-pty-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc), name); + g_free(name); s->timer_tag = 0; return chr; @@ -2596,7 +2618,7 @@ static void udp_chr_update_read_handler(CharDriverState *chr, remove_fd_in_watch(chr); if (s->ioc) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, udp_chr_read_poll, udp_chr_read, chr, context); @@ -2673,9 +2695,13 @@ static gboolean socket_reconnect_timeout(gpointer opaque); static void qemu_chr_socket_restart_timer(CharDriverState *chr) { TCPCharDriver *s = chr->opaque; + char *name; assert(s->connected == 0); s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time, socket_reconnect_timeout, chr); + name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); + g_source_set_name_by_id(s->reconnect_timer, name); + g_free(name); } static void check_report_connect_error(CharDriverState *chr, @@ -3000,7 +3026,7 @@ static void tcp_chr_connect(void *opaque) s->connected = 1; if (s->ioc) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, tcp_chr_read_poll, tcp_chr_read, chr, NULL); @@ -3019,7 +3045,7 @@ static void tcp_chr_update_read_handler(CharDriverState *chr, remove_fd_in_watch(chr); if (s->ioc) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, tcp_chr_read_poll, tcp_chr_read, chr, context); @@ -3117,6 +3143,7 @@ static void tcp_chr_tls_init(CharDriverState *chr) TCPCharDriver *s = chr->opaque; QIOChannelTLS *tioc; Error *err = NULL; + gchar *name; if (s->is_listen) { tioc = qio_channel_tls_new_server( @@ -3134,6 +3161,11 @@ static void tcp_chr_tls_init(CharDriverState *chr) tcp_chr_disconnect(chr); return; } + name = g_strdup_printf("chardev-tls-%s-%s", + s->is_listen ? "server" : "client", + chr->label); + qio_channel_set_name(QIO_CHANNEL(tioc), name); + g_free(name); object_unref(OBJECT(s->ioc)); s->ioc = QIO_CHANNEL(tioc); @@ -3144,6 +3176,19 @@ static void tcp_chr_tls_init(CharDriverState *chr) } +static void tcp_chr_set_client_ioc_name(CharDriverState *chr, + QIOChannelSocket *sioc) +{ + TCPCharDriver *s = chr->opaque; + char *name; + name = g_strdup_printf("chardev-tcp-%s-%s", + s->is_listen ? "server" : "client", + chr->label); + qio_channel_set_name(QIO_CHANNEL(sioc), name); + g_free(name); + +} + static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc) { TCPCharDriver *s = chr->opaque; @@ -3189,6 +3234,7 @@ static int tcp_chr_add_client(CharDriverState *chr, int fd) if (!sioc) { return -1; } + tcp_chr_set_client_ioc_name(chr, sioc); ret = tcp_chr_new_client(chr, sioc); object_unref(OBJECT(sioc)); return ret; @@ -3230,6 +3276,7 @@ static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp) qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL); } else { sioc = qio_channel_socket_new(); + tcp_chr_set_client_ioc_name(chr, sioc); if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { object_unref(OBJECT(sioc)); return -1; @@ -4443,6 +4490,7 @@ static gboolean socket_reconnect_timeout(gpointer opaque) } sioc = qio_channel_socket_new(); + tcp_chr_set_client_ioc_name(chr, sioc); qio_channel_socket_connect_async(sioc, s->addr, qemu_chr_socket_connected, chr, NULL); @@ -4544,12 +4592,19 @@ static CharDriverState *qmp_chardev_open_socket(const char *id, if (s->reconnect_time) { sioc = qio_channel_socket_new(); + tcp_chr_set_client_ioc_name(chr, sioc); qio_channel_socket_connect_async(sioc, s->addr, qemu_chr_socket_connected, chr, NULL); } else { if (s->is_listen) { + char *name; sioc = qio_channel_socket_new(); + + name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(sioc), name); + g_free(name); + if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) { goto error; } @@ -4590,6 +4645,8 @@ static CharDriverState *qmp_chardev_open_udp(const char *id, ChardevUdp *udp = backend->u.udp.data; ChardevCommon *common = qapi_ChardevUdp_base(udp); QIOChannelSocket *sioc = qio_channel_socket_new(); + char *name; + CharDriverState *chr; if (qio_channel_socket_dgram_sync(sioc, udp->local, udp->remote, @@ -4597,7 +4654,13 @@ static CharDriverState *qmp_chardev_open_udp(const char *id, object_unref(OBJECT(sioc)); return NULL; } - return qemu_chr_open_udp(sioc, common, errp); + chr = qemu_chr_open_udp(sioc, common, errp); + + name = g_strdup_printf("chardev-udp-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(sioc), name); + g_free(name); + + return chr; } -- 2.11.4.GIT