Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
CC: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
chardev/char.c | 4 ++--
hmp-commands.hx | 16 ++++++++++++++++
hmp.c | 34 ++++++++++++++++++++++++++++++++++
hmp.h | 1 +
include/sysemu/char.h | 12 ++++++++++++
5 files changed, 65 insertions(+), 2 deletions(-)
diff --git a/chardev/char.c b/chardev/char.c
index bac5e1c..0483f19 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -880,8 +880,8 @@ help_string_append(const char *name, void *opaque)
g_string_append_printf(str, "\n%s", name);
}
-static ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts,
- Error **errp)
+ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts,
+ Error **errp)
{
Error *local_err = NULL;
const ChardevClass *cc;
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 0aca984..0f2a059 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1727,6 +1727,22 @@ chardev_add accepts the same parameters as the -chardev
command line switch.
ETEXI
{
+ .name = "chardev-change",
+ .args_type = "id:s,args:s",
+ .params = "id args",
+ .help = "change chardev",
+ .cmd = hmp_chardev_change,
+ },
+
+STEXI
+@item chardev-change args
+@findex chardev-change
+chardev_change accepts existing chardev @var{id} and then the same arguments
+as the -chardev command line switch (except for "id").
+
+ETEXI
+
+ {
.name = "chardev-remove",
.args_type = "id:s",
.params = "id",
diff --git a/hmp.c b/hmp.c
index 3dceaf8..f7d0b38 100644
--- a/hmp.c
+++ b/hmp.c
@@ -2209,6 +2209,40 @@ void hmp_chardev_add(Monitor *mon, const QDict *qdict)
hmp_handle_error(mon, &err);
}
+void hmp_chardev_change(Monitor *mon, const QDict *qdict)
+{
+ const char *args = qdict_get_str(qdict, "args");
+ const char *id;
+ Error *err = NULL;
+ ChardevBackend *backend = NULL;
+ ChardevReturn *ret = NULL;
+ QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), args,
+ true);
+ if (!opts) {
+ error_setg(&err, "Parsing chardev args failed");
+ goto end;
+ }
+
+ id = qdict_get_str(qdict, "id");
+ if (qemu_opts_id(opts)) {
+ error_setg(&err, "Unexpected 'id' parameter");
+ goto end;
+ }
+
+ backend = qemu_chr_parse_opts(opts, &err);
+ if (!backend) {
+ goto end;
+ }
+
+ ret = qmp_chardev_change(id, backend, &err);
+
+end:
+ qapi_free_ChardevReturn(ret);
+ qapi_free_ChardevBackend(backend);
+ qemu_opts_del(opts);
+ hmp_handle_error(mon, &err);
+}
+
void hmp_chardev_remove(Monitor *mon, const QDict *qdict)
{
Error *local_err = NULL;
diff --git a/hmp.h b/hmp.h
index d8b94ce..23e035c 100644
--- a/hmp.h
+++ b/hmp.h
@@ -102,6 +102,7 @@ void hmp_nbd_server_start(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_add(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict);
void hmp_chardev_add(Monitor *mon, const QDict *qdict);
+void hmp_chardev_change(Monitor *mon, const QDict *qdict);
void hmp_chardev_remove(Monitor *mon, const QDict *qdict);
void hmp_qemu_io(Monitor *mon, const QDict *qdict);
void hmp_cpu_add(Monitor *mon, const QDict *qdict);
diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 68c7876..92ae57e 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -132,6 +132,18 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend);
/**
+ * @qemu_chr_parse_opts:
+ *
+ * Parse the options to the ChardevBackend struct.
+ *
+ * @opts
+ *
+ * Returns: a new backend
+ */
+ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts,
+ Error **errp);
+
+/**
* @qemu_chr_new:
*
* Create a new character backend from a URI.
--
2.7.4
