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#include "qemu-common.h"
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#include "qemu-error.h"
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#include "qemu-option.h"
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#include "qemu-config.h"
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#include "sysemu.h"
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#include "hw/qdev.h"
7

    
8
static QemuOptsList qemu_drive_opts = {
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    .name = "drive",
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    .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
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    .desc = {
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        {
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            .name = "bus",
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            .type = QEMU_OPT_NUMBER,
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            .help = "bus number",
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        },{
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            .name = "unit",
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            .type = QEMU_OPT_NUMBER,
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            .help = "unit number (i.e. lun for scsi)",
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        },{
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            .name = "if",
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            .type = QEMU_OPT_STRING,
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            .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
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        },{
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            .name = "index",
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            .type = QEMU_OPT_NUMBER,
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        },{
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            .name = "cyls",
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            .type = QEMU_OPT_NUMBER,
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            .help = "number of cylinders (ide disk geometry)",
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        },{
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            .name = "heads",
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            .type = QEMU_OPT_NUMBER,
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            .help = "number of heads (ide disk geometry)",
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        },{
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            .name = "secs",
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            .type = QEMU_OPT_NUMBER,
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            .help = "number of sectors (ide disk geometry)",
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        },{
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            .name = "trans",
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            .type = QEMU_OPT_STRING,
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            .help = "chs translation (auto, lba. none)",
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        },{
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            .name = "media",
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            .type = QEMU_OPT_STRING,
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            .help = "media type (disk, cdrom)",
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        },{
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            .name = "snapshot",
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            .type = QEMU_OPT_BOOL,
50
        },{
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            .name = "file",
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            .type = QEMU_OPT_STRING,
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            .help = "disk image",
54
        },{
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            .name = "cache",
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            .type = QEMU_OPT_STRING,
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            .help = "host cache usage (none, writeback, writethrough, unsafe)",
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        },{
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            .name = "aio",
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            .type = QEMU_OPT_STRING,
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            .help = "host AIO implementation (threads, native)",
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        },{
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            .name = "format",
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            .type = QEMU_OPT_STRING,
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            .help = "disk format (raw, qcow2, ...)",
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        },{
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            .name = "serial",
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            .type = QEMU_OPT_STRING,
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        },{
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            .name = "rerror",
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            .type = QEMU_OPT_STRING,
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        },{
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            .name = "werror",
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            .type = QEMU_OPT_STRING,
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        },{
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            .name = "addr",
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            .type = QEMU_OPT_STRING,
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            .help = "pci address (virtio only)",
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        },{
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            .name = "readonly",
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            .type = QEMU_OPT_BOOL,
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        },
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        { /* end of list */ }
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    },
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};
86

    
87
static QemuOptsList qemu_chardev_opts = {
88
    .name = "chardev",
89
    .implied_opt_name = "backend",
90
    .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
91
    .desc = {
92
        {
93
            .name = "backend",
94
            .type = QEMU_OPT_STRING,
95
        },{
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            .name = "path",
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            .type = QEMU_OPT_STRING,
98
        },{
99
            .name = "host",
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            .type = QEMU_OPT_STRING,
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        },{
102
            .name = "port",
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            .type = QEMU_OPT_STRING,
104
        },{
105
            .name = "localaddr",
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            .type = QEMU_OPT_STRING,
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        },{
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            .name = "localport",
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            .type = QEMU_OPT_STRING,
110
        },{
111
            .name = "to",
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            .type = QEMU_OPT_NUMBER,
113
        },{
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            .name = "ipv4",
115
            .type = QEMU_OPT_BOOL,
116
        },{
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            .name = "ipv6",
118
            .type = QEMU_OPT_BOOL,
119
        },{
120
            .name = "wait",
121
            .type = QEMU_OPT_BOOL,
122
        },{
123
            .name = "server",
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            .type = QEMU_OPT_BOOL,
125
        },{
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            .name = "delay",
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            .type = QEMU_OPT_BOOL,
128
        },{
129
            .name = "telnet",
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            .type = QEMU_OPT_BOOL,
131
        },{
132
            .name = "width",
133
            .type = QEMU_OPT_NUMBER,
134
        },{
135
            .name = "height",
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            .type = QEMU_OPT_NUMBER,
137
        },{
138
            .name = "cols",
139
            .type = QEMU_OPT_NUMBER,
140
        },{
141
            .name = "rows",
142
            .type = QEMU_OPT_NUMBER,
143
        },{
144
            .name = "mux",
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            .type = QEMU_OPT_BOOL,
146
        },{
147
            .name = "signal",
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            .type = QEMU_OPT_BOOL,
149
        },
150
        { /* end of list */ }
151
    },
152
};
153

    
154
QemuOptsList qemu_fsdev_opts = {
155
    .name = "fsdev",
156
    .implied_opt_name = "fstype",
157
    .head = QTAILQ_HEAD_INITIALIZER(qemu_fsdev_opts.head),
158
    .desc = {
159
        {
160
            .name = "fstype",
161
            .type = QEMU_OPT_STRING,
162
        }, {
163
            .name = "path",
164
            .type = QEMU_OPT_STRING,
165
        }, {
166
            .name = "security_model",
167
            .type = QEMU_OPT_STRING,
168
        },
169
        { /*End of list */ }
170
    },
171
};
172

    
173
QemuOptsList qemu_virtfs_opts = {
174
    .name = "virtfs",
175
    .implied_opt_name = "fstype",
176
    .head = QTAILQ_HEAD_INITIALIZER(qemu_virtfs_opts.head),
177
    .desc = {
178
        {
179
            .name = "fstype",
180
            .type = QEMU_OPT_STRING,
181
        }, {
182
            .name = "path",
183
            .type = QEMU_OPT_STRING,
184
        }, {
185
            .name = "mount_tag",
186
            .type = QEMU_OPT_STRING,
187
        }, {
188
            .name = "security_model",
189
            .type = QEMU_OPT_STRING,
190
        },
191

    
192
        { /*End of list */ }
193
    },
194
};
195

    
196
static QemuOptsList qemu_device_opts = {
197
    .name = "device",
198
    .implied_opt_name = "driver",
199
    .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
200
    .desc = {
201
        /*
202
         * no elements => accept any
203
         * sanity checking will happen later
204
         * when setting device properties
205
         */
206
        { /* end of list */ }
207
    },
208
};
209

    
210
static QemuOptsList qemu_netdev_opts = {
211
    .name = "netdev",
212
    .implied_opt_name = "type",
213
    .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
214
    .desc = {
215
        /*
216
         * no elements => accept any params
217
         * validation will happen later
218
         */
219
        { /* end of list */ }
220
    },
221
};
222

    
223
static QemuOptsList qemu_net_opts = {
224
    .name = "net",
225
    .implied_opt_name = "type",
226
    .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
227
    .desc = {
228
        /*
229
         * no elements => accept any params
230
         * validation will happen later
231
         */
232
        { /* end of list */ }
233
    },
234
};
235

    
236
static QemuOptsList qemu_rtc_opts = {
237
    .name = "rtc",
238
    .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
239
    .desc = {
240
        {
241
            .name = "base",
242
            .type = QEMU_OPT_STRING,
243
        },{
244
            .name = "clock",
245
            .type = QEMU_OPT_STRING,
246
        },{
247
            .name = "driftfix",
248
            .type = QEMU_OPT_STRING,
249
        },
250
        { /* end of list */ }
251
    },
252
};
253

    
254
static QemuOptsList qemu_global_opts = {
255
    .name = "global",
256
    .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
257
    .desc = {
258
        {
259
            .name = "driver",
260
            .type = QEMU_OPT_STRING,
261
        },{
262
            .name = "property",
263
            .type = QEMU_OPT_STRING,
264
        },{
265
            .name = "value",
266
            .type = QEMU_OPT_STRING,
267
        },
268
        { /* end of list */ }
269
    },
270
};
271

    
272
static QemuOptsList qemu_mon_opts = {
273
    .name = "mon",
274
    .implied_opt_name = "chardev",
275
    .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
276
    .desc = {
277
        {
278
            .name = "mode",
279
            .type = QEMU_OPT_STRING,
280
        },{
281
            .name = "chardev",
282
            .type = QEMU_OPT_STRING,
283
        },{
284
            .name = "default",
285
            .type = QEMU_OPT_BOOL,
286
        },{
287
            .name = "pretty",
288
            .type = QEMU_OPT_BOOL,
289
        },
290
        { /* end of list */ }
291
    },
292
};
293

    
294
#ifdef CONFIG_SIMPLE_TRACE
295
static QemuOptsList qemu_trace_opts = {
296
    .name = "trace",
297
    .implied_opt_name = "trace",
298
    .head = QTAILQ_HEAD_INITIALIZER(qemu_trace_opts.head),
299
    .desc = {
300
        {
301
            .name = "file",
302
            .type = QEMU_OPT_STRING,
303
        },
304
        { /* end if list */ }
305
    },
306
};
307
#endif
308

    
309
static QemuOptsList qemu_cpudef_opts = {
310
    .name = "cpudef",
311
    .head = QTAILQ_HEAD_INITIALIZER(qemu_cpudef_opts.head),
312
    .desc = {
313
        {
314
            .name = "name",
315
            .type = QEMU_OPT_STRING,
316
        },{
317
            .name = "level",
318
            .type = QEMU_OPT_NUMBER,
319
        },{
320
            .name = "vendor",
321
            .type = QEMU_OPT_STRING,
322
        },{
323
            .name = "family",
324
            .type = QEMU_OPT_NUMBER,
325
        },{
326
            .name = "model",
327
            .type = QEMU_OPT_NUMBER,
328
        },{
329
            .name = "stepping",
330
            .type = QEMU_OPT_NUMBER,
331
        },{
332
            .name = "feature_edx",      /* cpuid 0000_0001.edx */
333
            .type = QEMU_OPT_STRING,
334
        },{
335
            .name = "feature_ecx",      /* cpuid 0000_0001.ecx */
336
            .type = QEMU_OPT_STRING,
337
        },{
338
            .name = "extfeature_edx",   /* cpuid 8000_0001.edx */
339
            .type = QEMU_OPT_STRING,
340
        },{
341
            .name = "extfeature_ecx",   /* cpuid 8000_0001.ecx */
342
            .type = QEMU_OPT_STRING,
343
        },{
344
            .name = "xlevel",
345
            .type = QEMU_OPT_NUMBER,
346
        },{
347
            .name = "model_id",
348
            .type = QEMU_OPT_STRING,
349
        },{
350
            .name = "vendor_override",
351
            .type = QEMU_OPT_NUMBER,
352
        },
353
        { /* end of list */ }
354
    },
355
};
356

    
357
QemuOptsList qemu_spice_opts = {
358
    .name = "spice",
359
    .head = QTAILQ_HEAD_INITIALIZER(qemu_spice_opts.head),
360
    .desc = {
361
        {
362
            .name = "port",
363
            .type = QEMU_OPT_NUMBER,
364
        },{
365
            .name = "tls-port",
366
            .type = QEMU_OPT_NUMBER,
367
        },{
368
            .name = "password",
369
            .type = QEMU_OPT_STRING,
370
        },{
371
            .name = "disable-ticketing",
372
            .type = QEMU_OPT_BOOL,
373
        },{
374
            .name = "x509-dir",
375
            .type = QEMU_OPT_STRING,
376
        },{
377
            .name = "x509-key-file",
378
            .type = QEMU_OPT_STRING,
379
        },{
380
            .name = "x509-key-password",
381
            .type = QEMU_OPT_STRING,
382
        },{
383
            .name = "x509-cert-file",
384
            .type = QEMU_OPT_STRING,
385
        },{
386
            .name = "x509-cacert-file",
387
            .type = QEMU_OPT_STRING,
388
        },{
389
            .name = "x509-dh-key-file",
390
            .type = QEMU_OPT_STRING,
391
        },{
392
            .name = "tls-ciphers",
393
            .type = QEMU_OPT_STRING,
394
        },
395
        { /* end if list */ }
396
    },
397
};
398

    
399
static QemuOptsList *vm_config_groups[32] = {
400
    &qemu_drive_opts,
401
    &qemu_chardev_opts,
402
    &qemu_device_opts,
403
    &qemu_netdev_opts,
404
    &qemu_net_opts,
405
    &qemu_rtc_opts,
406
    &qemu_global_opts,
407
    &qemu_mon_opts,
408
    &qemu_cpudef_opts,
409
#ifdef CONFIG_SIMPLE_TRACE
410
    &qemu_trace_opts,
411
#endif
412
    NULL,
413
};
414

    
415
static QemuOptsList *find_list(QemuOptsList **lists, const char *group)
416
{
417
    int i;
418

    
419
    for (i = 0; lists[i] != NULL; i++) {
420
        if (strcmp(lists[i]->name, group) == 0)
421
            break;
422
    }
423
    if (lists[i] == NULL) {
424
        error_report("there is no option group \"%s\"", group);
425
    }
426
    return lists[i];
427
}
428

    
429
QemuOptsList *qemu_find_opts(const char *group)
430
{
431
    return find_list(vm_config_groups, group);
432
}
433

    
434
void qemu_add_opts(QemuOptsList *list)
435
{
436
    int entries, i;
437

    
438
    entries = ARRAY_SIZE(vm_config_groups);
439
    entries--; /* keep list NULL terminated */
440
    for (i = 0; i < entries; i++) {
441
        if (vm_config_groups[i] == NULL) {
442
            vm_config_groups[i] = list;
443
            return;
444
        }
445
    }
446
    fprintf(stderr, "ran out of space in vm_config_groups");
447
    abort();
448
}
449

    
450
int qemu_set_option(const char *str)
451
{
452
    char group[64], id[64], arg[64];
453
    QemuOptsList *list;
454
    QemuOpts *opts;
455
    int rc, offset;
456

    
457
    rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
458
    if (rc < 3 || str[offset] != '=') {
459
        error_report("can't parse: \"%s\"", str);
460
        return -1;
461
    }
462

    
463
    list = qemu_find_opts(group);
464
    if (list == NULL) {
465
        return -1;
466
    }
467

    
468
    opts = qemu_opts_find(list, id);
469
    if (!opts) {
470
        error_report("there is no %s \"%s\" defined",
471
                     list->name, id);
472
        return -1;
473
    }
474

    
475
    if (qemu_opt_set(opts, arg, str+offset+1) == -1) {
476
        return -1;
477
    }
478
    return 0;
479
}
480

    
481
int qemu_global_option(const char *str)
482
{
483
    char driver[64], property[64];
484
    QemuOpts *opts;
485
    int rc, offset;
486

    
487
    rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
488
    if (rc < 2 || str[offset] != '=') {
489
        error_report("can't parse: \"%s\"", str);
490
        return -1;
491
    }
492

    
493
    opts = qemu_opts_create(&qemu_global_opts, NULL, 0);
494
    qemu_opt_set(opts, "driver", driver);
495
    qemu_opt_set(opts, "property", property);
496
    qemu_opt_set(opts, "value", str+offset+1);
497
    return 0;
498
}
499

    
500
struct ConfigWriteData {
501
    QemuOptsList *list;
502
    FILE *fp;
503
};
504

    
505
static int config_write_opt(const char *name, const char *value, void *opaque)
506
{
507
    struct ConfigWriteData *data = opaque;
508

    
509
    fprintf(data->fp, "  %s = \"%s\"\n", name, value);
510
    return 0;
511
}
512

    
513
static int config_write_opts(QemuOpts *opts, void *opaque)
514
{
515
    struct ConfigWriteData *data = opaque;
516
    const char *id = qemu_opts_id(opts);
517

    
518
    if (id) {
519
        fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
520
    } else {
521
        fprintf(data->fp, "[%s]\n", data->list->name);
522
    }
523
    qemu_opt_foreach(opts, config_write_opt, data, 0);
524
    fprintf(data->fp, "\n");
525
    return 0;
526
}
527

    
528
void qemu_config_write(FILE *fp)
529
{
530
    struct ConfigWriteData data = { .fp = fp };
531
    QemuOptsList **lists = vm_config_groups;
532
    int i;
533

    
534
    fprintf(fp, "# qemu config file\n\n");
535
    for (i = 0; lists[i] != NULL; i++) {
536
        data.list = lists[i];
537
        qemu_opts_foreach(data.list, config_write_opts, &data, 0);
538
    }
539
}
540

    
541
int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname)
542
{
543
    char line[1024], group[64], id[64], arg[64], value[1024];
544
    Location loc;
545
    QemuOptsList *list = NULL;
546
    QemuOpts *opts = NULL;
547
    int res = -1, lno = 0;
548

    
549
    loc_push_none(&loc);
550
    while (fgets(line, sizeof(line), fp) != NULL) {
551
        loc_set_file(fname, ++lno);
552
        if (line[0] == '\n') {
553
            /* skip empty lines */
554
            continue;
555
        }
556
        if (line[0] == '#') {
557
            /* comment */
558
            continue;
559
        }
560
        if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {
561
            /* group with id */
562
            list = find_list(lists, group);
563
            if (list == NULL)
564
                goto out;
565
            opts = qemu_opts_create(list, id, 1);
566
            continue;
567
        }
568
        if (sscanf(line, "[%63[^]]]", group) == 1) {
569
            /* group without id */
570
            list = find_list(lists, group);
571
            if (list == NULL)
572
                goto out;
573
            opts = qemu_opts_create(list, NULL, 0);
574
            continue;
575
        }
576
        if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
577
            /* arg = value */
578
            if (opts == NULL) {
579
                error_report("no group defined");
580
                goto out;
581
            }
582
            if (qemu_opt_set(opts, arg, value) != 0) {
583
                goto out;
584
            }
585
            continue;
586
        }
587
        error_report("parse error");
588
        goto out;
589
    }
590
    if (ferror(fp)) {
591
        error_report("error reading file");
592
        goto out;
593
    }
594
    res = 0;
595
out:
596
    loc_pop(&loc);
597
    return res;
598
}
599

    
600
int qemu_read_config_file(const char *filename)
601
{
602
    FILE *f = fopen(filename, "r");
603
    int ret;
604

    
605
    if (f == NULL) {
606
        return -errno;
607
    }
608

    
609
    ret = qemu_config_parse(f, vm_config_groups, filename);
610
    fclose(f);
611

    
612
    if (ret == 0) {
613
        return 0;
614
    } else {
615
        return -EINVAL;
616
    }
617
}