xref: /qemu/monitor/qemu-config-qmp.c (revision 3df4c288)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #include "qemu/osdep.h"
3 #include "qapi/error.h"
4 #include "qapi/qapi-commands-misc.h"
5 #include "qapi/qmp/qlist.h"
6 #include "qemu/option.h"
7 #include "qemu/config-file.h"
8 #include "hw/boards.h"
9 
query_option_descs(const QemuOptDesc * desc)10 static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc)
11 {
12     CommandLineParameterInfoList *param_list = NULL;
13     CommandLineParameterInfo *info;
14     int i;
15 
16     for (i = 0; desc[i].name != NULL; i++) {
17         info = g_malloc0(sizeof(*info));
18         info->name = g_strdup(desc[i].name);
19 
20         switch (desc[i].type) {
21         case QEMU_OPT_STRING:
22             info->type = COMMAND_LINE_PARAMETER_TYPE_STRING;
23             break;
24         case QEMU_OPT_BOOL:
25             info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN;
26             break;
27         case QEMU_OPT_NUMBER:
28             info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER;
29             break;
30         case QEMU_OPT_SIZE:
31             info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE;
32             break;
33         }
34 
35         info->help = g_strdup(desc[i].help);
36         info->q_default = g_strdup(desc[i].def_value_str);
37 
38         QAPI_LIST_PREPEND(param_list, info);
39     }
40 
41     return param_list;
42 }
43 
44 /* remove repeated entry from the info list */
cleanup_infolist(CommandLineParameterInfoList * head)45 static void cleanup_infolist(CommandLineParameterInfoList *head)
46 {
47     CommandLineParameterInfoList *pre_entry, *cur, *del_entry;
48 
49     cur = head;
50     while (cur->next) {
51         pre_entry = head;
52         while (pre_entry != cur->next) {
53             if (!strcmp(pre_entry->value->name, cur->next->value->name)) {
54                 del_entry = cur->next;
55                 cur->next = cur->next->next;
56                 del_entry->next = NULL;
57                 qapi_free_CommandLineParameterInfoList(del_entry);
58                 break;
59             }
60             pre_entry = pre_entry->next;
61         }
62         cur = cur->next;
63     }
64 }
65 
66 /* merge the description items of two parameter infolists */
connect_infolist(CommandLineParameterInfoList * head,CommandLineParameterInfoList * new)67 static void connect_infolist(CommandLineParameterInfoList *head,
68                              CommandLineParameterInfoList *new)
69 {
70     CommandLineParameterInfoList *cur;
71 
72     cur = head;
73     while (cur->next) {
74         cur = cur->next;
75     }
76     cur->next = new;
77 }
78 
79 /* access all the local QemuOptsLists for drive option */
get_drive_infolist(void)80 static CommandLineParameterInfoList *get_drive_infolist(void)
81 {
82     CommandLineParameterInfoList *head = NULL, *cur;
83     int i;
84 
85     for (i = 0; drive_config_groups[i] != NULL; i++) {
86         if (!head) {
87             head = query_option_descs(drive_config_groups[i]->desc);
88         } else {
89             cur = query_option_descs(drive_config_groups[i]->desc);
90             connect_infolist(head, cur);
91         }
92     }
93     cleanup_infolist(head);
94 
95     return head;
96 }
97 
objprop_to_cmdline_prop(ObjectProperty * prop)98 static CommandLineParameterInfo *objprop_to_cmdline_prop(ObjectProperty *prop)
99 {
100     CommandLineParameterInfo *info;
101 
102     info = g_malloc0(sizeof(*info));
103     info->name = g_strdup(prop->name);
104 
105     if (g_str_equal(prop->type, "bool") || g_str_equal(prop->type, "OnOffAuto")) {
106         info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN;
107     } else if (g_str_equal(prop->type, "int")) {
108         info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER;
109     } else if (g_str_equal(prop->type, "size")) {
110         info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE;
111     } else {
112         info->type = COMMAND_LINE_PARAMETER_TYPE_STRING;
113     }
114 
115     if (prop->description) {
116         info->help = g_strdup(prop->description);
117     }
118 
119     return info;
120 }
121 
query_all_machine_properties(void)122 static CommandLineParameterInfoList *query_all_machine_properties(void)
123 {
124     CommandLineParameterInfoList *params = NULL, *clpiter;
125     CommandLineParameterInfo *info;
126     GSList *machines, *curr_mach;
127     ObjectPropertyIterator op_iter;
128     ObjectProperty *prop;
129     bool is_new;
130 
131     machines = object_class_get_list(TYPE_MACHINE, false);
132     assert(machines);
133 
134     /* Loop over all machine classes */
135     for (curr_mach = machines; curr_mach; curr_mach = curr_mach->next) {
136         object_class_property_iter_init(&op_iter, curr_mach->data);
137         /* ... and over the properties of each machine: */
138         while ((prop = object_property_iter_next(&op_iter))) {
139             if (!prop->set) {
140                 continue;
141             }
142             /*
143              * Check whether the property has already been put into the list
144              * (via another machine class)
145              */
146             is_new = true;
147             for (clpiter = params; clpiter != NULL; clpiter = clpiter->next) {
148                 if (g_str_equal(clpiter->value->name, prop->name)) {
149                     is_new = false;
150                     break;
151                 }
152             }
153             /* If it hasn't been added before, add it now to the list */
154             if (is_new) {
155                 info = objprop_to_cmdline_prop(prop);
156                 QAPI_LIST_PREPEND(params, info);
157             }
158         }
159     }
160 
161     g_slist_free(machines);
162 
163     /* Add entry for the "type" parameter */
164     info = g_malloc0(sizeof(*info));
165     info->name = g_strdup("type");
166     info->type = COMMAND_LINE_PARAMETER_TYPE_STRING;
167     info->help = g_strdup("machine type");
168     QAPI_LIST_PREPEND(params, info);
169 
170     return params;
171 }
172 
qmp_query_command_line_options(const char * option,Error ** errp)173 CommandLineOptionInfoList *qmp_query_command_line_options(const char *option,
174                                                           Error **errp)
175 {
176     CommandLineOptionInfoList *conf_list = NULL;
177     CommandLineOptionInfo *info;
178     int i;
179 
180     for (i = 0; vm_config_groups[i] != NULL; i++) {
181         if (!option || !strcmp(option, vm_config_groups[i]->name)) {
182             info = g_malloc0(sizeof(*info));
183             info->option = g_strdup(vm_config_groups[i]->name);
184             if (!strcmp("drive", vm_config_groups[i]->name)) {
185                 info->parameters = get_drive_infolist();
186             } else {
187                 info->parameters =
188                     query_option_descs(vm_config_groups[i]->desc);
189             }
190             QAPI_LIST_PREPEND(conf_list, info);
191         }
192     }
193 
194     if (!option || !strcmp(option, "machine")) {
195         info = g_malloc0(sizeof(*info));
196         info->option = g_strdup("machine");
197         info->parameters = query_all_machine_properties();
198         QAPI_LIST_PREPEND(conf_list, info);
199     }
200 
201     if (conf_list == NULL) {
202         error_setg(errp, "invalid option name: %s", option);
203     }
204 
205     return conf_list;
206 }
207