This is associates both QMP and HMP monitors with a character device backend.
Signed-off-by: Daniel P. Berrangé <[email protected]> --- chardev/char.c | 3 ++- gdbstub/system.c | 4 ++-- include/monitor/monitor.h | 4 ++-- monitor/hmp.c | 10 +++++++-- monitor/monitor-internal.h | 2 ++ monitor/monitor.c | 46 ++++++++++++++++++++++++++++++-------- monitor/qmp.c | 17 +++++++++----- stubs/monitor-internal.c | 2 +- 8 files changed, 65 insertions(+), 23 deletions(-) diff --git a/chardev/char.c b/chardev/char.c index 813c04d953..981fbb1aaa 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -804,8 +804,9 @@ static Chardev *qemu_chr_new_from_name(const char *label, const char *filename, } if (qemu_opt_get_bool(opts, "mux", 0)) { + const char *chardev_id = qemu_opts_id(opts); assert(permit_mux_mon); - monitor_new_hmp(chr, true, &err); + monitor_new_hmp(chardev_id, true, &err); if (err) { error_report_err(err); object_unparent(OBJECT(chr)); diff --git a/gdbstub/system.c b/gdbstub/system.c index 20dcf7878d..920abda184 100644 --- a/gdbstub/system.c +++ b/gdbstub/system.c @@ -386,9 +386,9 @@ bool gdbserver_start(const char *device, Error **errp) qemu_add_vm_change_state_handler(gdb_vm_state_change, NULL); /* Initialize a monitor terminal for gdb */ - mon_chr = qemu_chardev_new(NULL, TYPE_CHARDEV_GDB, + mon_chr = qemu_chardev_new("gdbchrdev0", TYPE_CHARDEV_GDB, NULL, NULL, &error_abort); - monitor_new_hmp(mon_chr, false, &error_abort); + monitor_new_hmp("gdbchrdev0", false, &error_abort); } else { qemu_chr_fe_deinit(&gdbserver_system_state.chr, true); mon_chr = gdbserver_system_state.mon_chr; diff --git a/include/monitor/monitor.h b/include/monitor/monitor.h index 2e9f9e12e9..a135b3a590 100644 --- a/include/monitor/monitor.h +++ b/include/monitor/monitor.h @@ -28,8 +28,8 @@ bool monitor_cur_is_qmp(void); void monitor_init_globals(void); void monitor_init_globals_core(void); -void monitor_new_qmp(Chardev *chr, bool pretty, Error **errp); -void monitor_new_hmp(Chardev *chr, bool use_readline, Error **errp); +void monitor_new_qmp(const char *chardev_id, bool pretty, Error **errp); +void monitor_new_hmp(const char *chardev_id, bool use_readline, Error **errp); int monitor_new(MonitorOptions *opts, bool allow_hmp, Error **errp); int monitor_new_opts(QemuOpts *opts, Error **errp); void monitor_cleanup(void); diff --git a/monitor/hmp.c b/monitor/hmp.c index 81047d2513..4ab81b5904 100644 --- a/monitor/hmp.c +++ b/monitor/hmp.c @@ -23,6 +23,7 @@ */ #include "qemu/osdep.h" +#include "qapi/error.h" #include <dirent.h> #include "hw/core/qdev.h" #include "hw/core/sysemu-cpu-ops.h" @@ -1538,8 +1539,9 @@ static void monitor_readline_flush(void *opaque) monitor_flush(&mon->parent_obj); } -void monitor_new_hmp(Chardev *chr, bool use_readline, Error **errp) +void monitor_new_hmp(const char *chardev_id, bool use_readline, Error **errp) { + ERRP_GUARD(); MonitorHMP *mon; static int counter; g_autofree char *id = g_strdup_printf("hmpcompat%d", counter++); @@ -1547,13 +1549,17 @@ void monitor_new_hmp(Chardev *chr, bool use_readline, Error **errp) object_get_objects_root(), id, errp, + "chardev", chardev_id, NULL); + if (!obj) { return; } + mon = MONITOR_HMP(obj); - if (!qemu_chr_fe_init(&mon->parent_obj.chr, chr, errp)) { + monitor_complete(MONITOR(mon), errp); + if (*errp) { object_unparent(OBJECT(mon)); return; } diff --git a/monitor/monitor-internal.h b/monitor/monitor-internal.h index 05c1f2f5e0..145d52fd71 100644 --- a/monitor/monitor-internal.h +++ b/monitor/monitor-internal.h @@ -108,6 +108,7 @@ struct MonitorClass { struct Monitor { Object parent; + char *chardev_id; CharFrontend chr; int suspend_cnt; /* Needs to be accessed atomically */ bool is_qmp; @@ -192,6 +193,7 @@ extern QmpCommandList qmp_commands, qmp_cap_negotiation_commands; extern QemuMutex monitor_lock; extern MonitorList mon_list; +void monitor_complete(Monitor *mon, Error **errp); void monitor_data_init(Monitor *mon, bool is_qmp, bool skip_flush, bool use_io_thread); void monitor_data_destroy(Monitor *mon); diff --git a/monitor/monitor.c b/monitor/monitor.c index a497c25c54..1f1f5fe9fe 100644 --- a/monitor/monitor.c +++ b/monitor/monitor.c @@ -77,10 +77,30 @@ OBJECT_DEFINE_TYPE(Monitor, monitor, MONITOR, OBJECT); static void monitor_finalize(Object *obj) { + Monitor *mon = MONITOR(obj); + + g_free(mon->chardev_id); +} + +static char *monitor_get_chardev_id(Object *obj, Error **errp) +{ + Monitor *mon = MONITOR(obj); + + return g_strdup(mon->chardev_id); +} + +static void monitor_set_chardev_id(Object *obj, const char *str, Error **errp) +{ + Monitor *mon = MONITOR(obj); + + mon->chardev_id = g_strdup(str); } static void monitor_class_init(ObjectClass *cls, const void *data) { + object_class_property_add_str(cls, "chardev", + monitor_get_chardev_id, + monitor_set_chardev_id); } static void monitor_init(Object *obj) @@ -729,16 +749,24 @@ void monitor_init_globals(void) aio_co_schedule(iohandler_get_aio_context(), qmp_dispatcher_co); } -int monitor_new(MonitorOptions *opts, bool allow_hmp, Error **errp) +void monitor_complete(Monitor *mon, Error **errp) { - ERRP_GUARD(); - Chardev *chr; + if (mon->chardev_id) { + Chardev *chr = qemu_chr_find(mon->chardev_id); + if (chr == NULL) { + error_setg(errp, "chardev \"%s\" not found", mon->chardev_id); + return; + } - chr = qemu_chr_find(opts->chardev); - if (chr == NULL) { - error_setg(errp, "chardev \"%s\" not found", opts->chardev); - return -1; + if (!qemu_chr_fe_init(&mon->chr, chr, errp)) { + return; + } } +} + +int monitor_new(MonitorOptions *opts, bool allow_hmp, Error **errp) +{ + ERRP_GUARD(); if (!opts->has_mode) { opts->mode = allow_hmp ? MONITOR_MODE_READLINE : MONITOR_MODE_CONTROL; @@ -746,7 +774,7 @@ int monitor_new(MonitorOptions *opts, bool allow_hmp, Error **errp) switch (opts->mode) { case MONITOR_MODE_CONTROL: - monitor_new_qmp(chr, opts->pretty, errp); + monitor_new_qmp(opts->chardev, opts->pretty, errp); break; case MONITOR_MODE_READLINE: if (!allow_hmp) { @@ -757,7 +785,7 @@ int monitor_new(MonitorOptions *opts, bool allow_hmp, Error **errp) error_setg(errp, "'pretty' is not compatible with HMP monitors"); return -1; } - monitor_new_hmp(chr, true, errp); + monitor_new_hmp(opts->chardev, true, errp); break; default: g_assert_not_reached(); diff --git a/monitor/qmp.c b/monitor/qmp.c index 5231ed506a..3a4e2ae0e7 100644 --- a/monitor/qmp.c +++ b/monitor/qmp.c @@ -527,7 +527,7 @@ static void monitor_qmp_setup_handlers_bh(void *opaque) monitor_list_append(&mon->parent_obj); } -void monitor_new_qmp(Chardev *chr, bool pretty, Error **errp) +void monitor_new_qmp(const char *chardev_id, bool pretty, Error **errp) { MonitorQMP *mon; static int counter; @@ -536,21 +536,26 @@ void monitor_new_qmp(Chardev *chr, bool pretty, Error **errp) object_get_objects_root(), id, errp, + "chardev", chardev_id, NULL); + if (!obj) { return; } - mon = MONITOR_QMP(obj); - if (!qemu_chr_fe_init(&mon->parent_obj.chr, chr, errp)) { + mon = MONITOR_QMP(obj); + monitor_complete(MONITOR(mon), errp); + if (*errp) { object_unparent(OBJECT(mon)); return; } + qemu_chr_fe_set_echo(&mon->parent_obj.chr, true); /* Note: we run QMP monitor in I/O thread when @chr supports that */ monitor_data_init(&mon->parent_obj, true, false, - qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_GCONTEXT)); + qemu_chr_has_feature(mon->parent_obj.chr.chr, + QEMU_CHAR_FEATURE_GCONTEXT)); mon->pretty = pretty; @@ -563,12 +568,12 @@ void monitor_new_qmp(Chardev *chr, bool pretty, Error **errp) * Make sure the old iowatch is gone. It's possible when * e.g. the chardev is in client mode, with wait=on. */ - remove_fd_in_watch(chr); + remove_fd_in_watch(mon->parent_obj.chr.chr); /* * Clean up listener IO sources early to prevent racy fd * handling between the main thread and the I/O thread. */ - remove_listener_fd_in_watch(chr); + remove_listener_fd_in_watch(mon->parent_obj.chr.chr); /* * We can't call qemu_chr_fe_set_handlers() directly here * since chardev might be running in the monitor I/O diff --git a/stubs/monitor-internal.c b/stubs/monitor-internal.c index 23d58da184..51db7588b9 100644 --- a/stubs/monitor-internal.c +++ b/stubs/monitor-internal.c @@ -8,6 +8,6 @@ int monitor_get_fd(Monitor *mon, const char *name, Error **errp) return -1; } -void monitor_new_hmp(Chardev *chr, bool use_readline, Error **errp) +void monitor_new_hmp(const char *chardev_id, bool use_readline, Error **errp) { } -- 2.54.0
