osdep.c: Fix accept4 fallback
[qemu.git] / qemu-config.c
blobc3203c87f91cf32782fe3b3a785d78f39bf6abc3
1 #include "qemu-common.h"
2 #include "qemu-option.h"
3 #include "qemu-config.h"
4 #include "sysemu.h"
5 #include "hw/qdev.h"
7 QemuOptsList qemu_drive_opts = {
8 .name = "drive",
9 .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
10 .desc = {
12 .name = "bus",
13 .type = QEMU_OPT_NUMBER,
14 .help = "bus number",
15 },{
16 .name = "unit",
17 .type = QEMU_OPT_NUMBER,
18 .help = "unit number (i.e. lun for scsi)",
19 },{
20 .name = "if",
21 .type = QEMU_OPT_STRING,
22 .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
23 },{
24 .name = "index",
25 .type = QEMU_OPT_NUMBER,
26 },{
27 .name = "cyls",
28 .type = QEMU_OPT_NUMBER,
29 .help = "number of cylinders (ide disk geometry)",
30 },{
31 .name = "heads",
32 .type = QEMU_OPT_NUMBER,
33 .help = "number of heads (ide disk geometry)",
34 },{
35 .name = "secs",
36 .type = QEMU_OPT_NUMBER,
37 .help = "number of sectors (ide disk geometry)",
38 },{
39 .name = "trans",
40 .type = QEMU_OPT_STRING,
41 .help = "chs translation (auto, lba. none)",
42 },{
43 .name = "media",
44 .type = QEMU_OPT_STRING,
45 .help = "media type (disk, cdrom)",
46 },{
47 .name = "snapshot",
48 .type = QEMU_OPT_BOOL,
49 },{
50 .name = "file",
51 .type = QEMU_OPT_STRING,
52 .help = "disk image",
53 },{
54 .name = "cache",
55 .type = QEMU_OPT_STRING,
56 .help = "host cache usage (none, writeback, writethrough)",
57 },{
58 .name = "aio",
59 .type = QEMU_OPT_STRING,
60 .help = "host AIO implementation (threads, native)",
61 },{
62 .name = "format",
63 .type = QEMU_OPT_STRING,
64 .help = "disk format (raw, qcow2, ...)",
65 },{
66 .name = "serial",
67 .type = QEMU_OPT_STRING,
68 },{
69 .name = "rerror",
70 .type = QEMU_OPT_STRING,
71 },{
72 .name = "werror",
73 .type = QEMU_OPT_STRING,
74 },{
75 .name = "addr",
76 .type = QEMU_OPT_STRING,
77 .help = "pci address (virtio only)",
78 },{
79 .name = "readonly",
80 .type = QEMU_OPT_BOOL,
82 { /* end if list */ }
86 QemuOptsList qemu_chardev_opts = {
87 .name = "chardev",
88 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
89 .desc = {
91 .name = "backend",
92 .type = QEMU_OPT_STRING,
93 },{
94 .name = "path",
95 .type = QEMU_OPT_STRING,
96 },{
97 .name = "host",
98 .type = QEMU_OPT_STRING,
99 },{
100 .name = "port",
101 .type = QEMU_OPT_STRING,
103 .name = "localaddr",
104 .type = QEMU_OPT_STRING,
106 .name = "localport",
107 .type = QEMU_OPT_STRING,
109 .name = "to",
110 .type = QEMU_OPT_NUMBER,
112 .name = "ipv4",
113 .type = QEMU_OPT_BOOL,
115 .name = "ipv6",
116 .type = QEMU_OPT_BOOL,
118 .name = "wait",
119 .type = QEMU_OPT_BOOL,
121 .name = "server",
122 .type = QEMU_OPT_BOOL,
124 .name = "delay",
125 .type = QEMU_OPT_BOOL,
127 .name = "telnet",
128 .type = QEMU_OPT_BOOL,
130 .name = "width",
131 .type = QEMU_OPT_NUMBER,
133 .name = "height",
134 .type = QEMU_OPT_NUMBER,
136 .name = "cols",
137 .type = QEMU_OPT_NUMBER,
139 .name = "rows",
140 .type = QEMU_OPT_NUMBER,
142 .name = "mux",
143 .type = QEMU_OPT_BOOL,
145 .name = "signal",
146 .type = QEMU_OPT_BOOL,
148 { /* end if list */ }
152 QemuOptsList qemu_device_opts = {
153 .name = "device",
154 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
155 .desc = {
157 * no elements => accept any
158 * sanity checking will happen later
159 * when setting device properties
161 { /* end if list */ }
165 QemuOptsList qemu_netdev_opts = {
166 .name = "netdev",
167 .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
168 .desc = {
170 * no elements => accept any params
171 * validation will happen later
173 { /* end of list */ }
177 QemuOptsList qemu_net_opts = {
178 .name = "net",
179 .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
180 .desc = {
182 * no elements => accept any params
183 * validation will happen later
185 { /* end of list */ }
189 QemuOptsList qemu_rtc_opts = {
190 .name = "rtc",
191 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
192 .desc = {
194 .name = "base",
195 .type = QEMU_OPT_STRING,
197 .name = "clock",
198 .type = QEMU_OPT_STRING,
199 #ifdef TARGET_I386
201 .name = "driftfix",
202 .type = QEMU_OPT_STRING,
203 #endif
205 { /* end if list */ }
209 QemuOptsList qemu_global_opts = {
210 .name = "global",
211 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
212 .desc = {
214 .name = "driver",
215 .type = QEMU_OPT_STRING,
217 .name = "property",
218 .type = QEMU_OPT_STRING,
220 .name = "value",
221 .type = QEMU_OPT_STRING,
223 { /* end if list */ }
227 QemuOptsList qemu_mon_opts = {
228 .name = "mon",
229 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
230 .desc = {
232 .name = "mode",
233 .type = QEMU_OPT_STRING,
235 .name = "chardev",
236 .type = QEMU_OPT_STRING,
238 .name = "default",
239 .type = QEMU_OPT_BOOL,
241 { /* end if list */ }
245 static QemuOptsList *lists[] = {
246 &qemu_drive_opts,
247 &qemu_chardev_opts,
248 &qemu_device_opts,
249 &qemu_netdev_opts,
250 &qemu_net_opts,
251 &qemu_rtc_opts,
252 &qemu_global_opts,
253 &qemu_mon_opts,
254 NULL,
257 static QemuOptsList *find_list(const char *group)
259 int i;
261 for (i = 0; lists[i] != NULL; i++) {
262 if (strcmp(lists[i]->name, group) == 0)
263 break;
265 if (lists[i] == NULL) {
266 qemu_error("there is no option group \"%s\"\n", group);
268 return lists[i];
271 int qemu_set_option(const char *str)
273 char group[64], id[64], arg[64];
274 QemuOptsList *list;
275 QemuOpts *opts;
276 int rc, offset;
278 rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
279 if (rc < 3 || str[offset] != '=') {
280 qemu_error("can't parse: \"%s\"\n", str);
281 return -1;
284 list = find_list(group);
285 if (list == NULL) {
286 return -1;
289 opts = qemu_opts_find(list, id);
290 if (!opts) {
291 qemu_error("there is no %s \"%s\" defined\n",
292 list->name, id);
293 return -1;
296 if (qemu_opt_set(opts, arg, str+offset+1) == -1) {
297 return -1;
299 return 0;
302 int qemu_global_option(const char *str)
304 char driver[64], property[64];
305 QemuOpts *opts;
306 int rc, offset;
308 rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
309 if (rc < 2 || str[offset] != '=') {
310 qemu_error("can't parse: \"%s\"\n", str);
311 return -1;
314 opts = qemu_opts_create(&qemu_global_opts, NULL, 0);
315 qemu_opt_set(opts, "driver", driver);
316 qemu_opt_set(opts, "property", property);
317 qemu_opt_set(opts, "value", str+offset+1);
318 return 0;
321 static int qemu_add_one_global(QemuOpts *opts, void *opaque)
323 GlobalProperty *g;
325 g = qemu_mallocz(sizeof(*g));
326 g->driver = qemu_opt_get(opts, "driver");
327 g->property = qemu_opt_get(opts, "property");
328 g->value = qemu_opt_get(opts, "value");
329 qdev_prop_register_global(g);
330 return 0;
333 void qemu_add_globals(void)
335 qemu_opts_foreach(&qemu_global_opts, qemu_add_one_global, NULL, 0);
338 struct ConfigWriteData {
339 QemuOptsList *list;
340 FILE *fp;
343 static int config_write_opt(const char *name, const char *value, void *opaque)
345 struct ConfigWriteData *data = opaque;
347 fprintf(data->fp, " %s = \"%s\"\n", name, value);
348 return 0;
351 static int config_write_opts(QemuOpts *opts, void *opaque)
353 struct ConfigWriteData *data = opaque;
354 const char *id = qemu_opts_id(opts);
356 if (id) {
357 fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
358 } else {
359 fprintf(data->fp, "[%s]\n", data->list->name);
361 qemu_opt_foreach(opts, config_write_opt, data, 0);
362 fprintf(data->fp, "\n");
363 return 0;
366 void qemu_config_write(FILE *fp)
368 struct ConfigWriteData data = { .fp = fp };
369 int i;
371 fprintf(fp, "# qemu config file\n\n");
372 for (i = 0; lists[i] != NULL; i++) {
373 data.list = lists[i];
374 qemu_opts_foreach(data.list, config_write_opts, &data, 0);
378 int qemu_config_parse(FILE *fp)
380 char line[1024], group[64], id[64], arg[64], value[1024];
381 QemuOptsList *list = NULL;
382 QemuOpts *opts = NULL;
384 while (fgets(line, sizeof(line), fp) != NULL) {
385 if (line[0] == '\n') {
386 /* skip empty lines */
387 continue;
389 if (line[0] == '#') {
390 /* comment */
391 continue;
393 if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {
394 /* group with id */
395 list = find_list(group);
396 if (list == NULL)
397 return -1;
398 opts = qemu_opts_create(list, id, 1);
399 continue;
401 if (sscanf(line, "[%63[^]]]", group) == 1) {
402 /* group without id */
403 list = find_list(group);
404 if (list == NULL)
405 return -1;
406 opts = qemu_opts_create(list, NULL, 0);
407 continue;
409 if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
410 /* arg = value */
411 if (opts == NULL) {
412 fprintf(stderr, "no group defined\n");
413 return -1;
415 if (qemu_opt_set(opts, arg, value) != 0) {
416 fprintf(stderr, "failed to set \"%s\" for %s\n",
417 arg, group);
418 return -1;
420 continue;
422 fprintf(stderr, "parse error: %s\n", line);
423 return -1;
425 return 0;