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monitor: introduce query-command-line-options

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Libvirt has no way to probe if an option or property is supported,
This patch introduces a new qmp command to query command line
option information. hmp command isn't added because it's not needed.

Signed-off-by: Amos Kong <akong@redhat.com>
CC: Luiz Capitulino <lcapitulino@redhat.com>
CC: Osier Yang <jyang@redhat.com>
CC: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Amos Kong 2013-04-25 17:50:35 +08:00 • committed by Luiz Capitulino
parent 9953f8822c
commit 1f8f987d34
3 changed files with 180 additions and 0 deletions
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67
util/qemu-config.c
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@ -5,6 +5,7 @@
#include "qapi/qmp/qerror.h"
#include "hw/qdev.h"
#include "qapi/error.h"
#include "qmp-commands.h"
static QemuOptsList *vm_config_groups[32];
@ -37,6 +38,72 @@ QemuOptsList *qemu_find_opts(const char *group)
return ret;
}
static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc)
{
CommandLineParameterInfoList *param_list = NULL, *entry;
CommandLineParameterInfo *info;
int i;
for (i = 0; desc[i].name != NULL; i++) {
info = g_malloc0(sizeof(*info));
info->name = g_strdup(desc[i].name);
switch (desc[i].type) {
case QEMU_OPT_STRING:
info->type = COMMAND_LINE_PARAMETER_TYPE_STRING;
break;
case QEMU_OPT_BOOL:
info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN;
break;
case QEMU_OPT_NUMBER:
info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER;
break;
case QEMU_OPT_SIZE:
info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE;
break;
}
if (desc[i].help) {
info->has_help = true;
info->help = g_strdup(desc[i].help);
}
entry = g_malloc0(sizeof(*entry));
entry->value = info;
entry->next = param_list;
param_list = entry;
}
return param_list;
}
CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option,
const char *option,
Error **errp)
{
CommandLineOptionInfoList *conf_list = NULL, *entry;
CommandLineOptionInfo *info;
int i;
for (i = 0; vm_config_groups[i] != NULL; i++) {
if (!has_option || !strcmp(option, vm_config_groups[i]->name)) {
info = g_malloc0(sizeof(*info));
info->option = g_strdup(vm_config_groups[i]->name);
info->parameters = query_option_descs(vm_config_groups[i]->desc);
entry = g_malloc0(sizeof(*entry));
entry->value = info;
entry->next = conf_list;
conf_list = entry;
}
}
if (conf_list == NULL) {
error_setg(errp, "invalid option name: %s", option);
}
return conf_list;
}
QemuOptsList *qemu_find_opts_err(const char *group, Error **errp)
{
return find_list(vm_config_groups, group, errp);