root / qemu-config.c @ dfe795e7
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| 1 |
#include "qemu-common.h" |
|---|---|
| 2 |
#include "qemu-error.h" |
| 3 |
#include "qemu-option.h" |
| 4 |
#include "qemu-config.h" |
| 5 |
#include "sysemu.h" |
| 6 |
#include "hw/qdev.h" |
| 7 |
|
| 8 |
QemuOptsList qemu_drive_opts = {
|
| 9 |
.name = "drive",
|
| 10 |
.head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 11 |
.desc = {
|
| 12 |
{
|
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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)",
|
| 24 |
},{
|
| 25 |
.name = "index",
|
| 26 |
.type = QEMU_OPT_NUMBER, |
| 27 |
},{
|
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.name = "cyls",
|
| 29 |
.type = QEMU_OPT_NUMBER, |
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.help = "number of cylinders (ide disk geometry)",
|
| 31 |
},{
|
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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)",
|
| 35 |
},{
|
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.name = "secs",
|
| 37 |
.type = QEMU_OPT_NUMBER, |
| 38 |
.help = "number of sectors (ide disk geometry)",
|
| 39 |
},{
|
| 40 |
.name = "trans",
|
| 41 |
.type = QEMU_OPT_STRING, |
| 42 |
.help = "chs translation (auto, lba. none)",
|
| 43 |
},{
|
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.name = "media",
|
| 45 |
.type = QEMU_OPT_STRING, |
| 46 |
.help = "media type (disk, cdrom)",
|
| 47 |
},{
|
| 48 |
.name = "snapshot",
|
| 49 |
.type = QEMU_OPT_BOOL, |
| 50 |
},{
|
| 51 |
.name = "file",
|
| 52 |
.type = QEMU_OPT_STRING, |
| 53 |
.help = "disk image",
|
| 54 |
},{
|
| 55 |
.name = "cache",
|
| 56 |
.type = QEMU_OPT_STRING, |
| 57 |
.help = "host cache usage (none, writeback, writethrough, unsafe)",
|
| 58 |
},{
|
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.name = "aio",
|
| 60 |
.type = QEMU_OPT_STRING, |
| 61 |
.help = "host AIO implementation (threads, native)",
|
| 62 |
},{
|
| 63 |
.name = "format",
|
| 64 |
.type = QEMU_OPT_STRING, |
| 65 |
.help = "disk format (raw, qcow2, ...)",
|
| 66 |
},{
|
| 67 |
.name = "serial",
|
| 68 |
.type = QEMU_OPT_STRING, |
| 69 |
},{
|
| 70 |
.name = "rerror",
|
| 71 |
.type = QEMU_OPT_STRING, |
| 72 |
},{
|
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.name = "werror",
|
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.type = QEMU_OPT_STRING, |
| 75 |
},{
|
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.name = "addr",
|
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.type = QEMU_OPT_STRING, |
| 78 |
.help = "pci address (virtio only)",
|
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},{
|
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.name = "readonly",
|
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.type = QEMU_OPT_BOOL, |
| 82 |
}, |
| 83 |
{ /* end if list */ }
|
| 84 |
}, |
| 85 |
}; |
| 86 |
|
| 87 |
QemuOptsList qemu_chardev_opts = {
|
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.name = "chardev",
|
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.implied_opt_name = "backend",
|
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.head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), |
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.desc = {
|
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{
|
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.name = "backend",
|
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.type = QEMU_OPT_STRING, |
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},{
|
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.name = "path",
|
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.type = QEMU_OPT_STRING, |
| 98 |
},{
|
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.name = "host",
|
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.type = QEMU_OPT_STRING, |
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},{
|
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.name = "port",
|
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.type = QEMU_OPT_STRING, |
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},{
|
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.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, |
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},{
|
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.name = "to",
|
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.type = QEMU_OPT_NUMBER, |
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},{
|
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.name = "ipv4",
|
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.type = QEMU_OPT_BOOL, |
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},{
|
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.name = "ipv6",
|
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.type = QEMU_OPT_BOOL, |
| 119 |
},{
|
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.name = "wait",
|
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.type = QEMU_OPT_BOOL, |
| 122 |
},{
|
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.name = "server",
|
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.type = QEMU_OPT_BOOL, |
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},{
|
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.name = "delay",
|
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.type = QEMU_OPT_BOOL, |
| 128 |
},{
|
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.name = "telnet",
|
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.type = QEMU_OPT_BOOL, |
| 131 |
},{
|
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.name = "width",
|
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.type = QEMU_OPT_NUMBER, |
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},{
|
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.name = "height",
|
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.type = QEMU_OPT_NUMBER, |
| 137 |
},{
|
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.name = "cols",
|
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.type = QEMU_OPT_NUMBER, |
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},{
|
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.name = "rows",
|
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.type = QEMU_OPT_NUMBER, |
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},{
|
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.name = "mux",
|
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.type = QEMU_OPT_BOOL, |
| 146 |
},{
|
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.name = "signal",
|
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.type = QEMU_OPT_BOOL, |
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}, |
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{ /* end if list */ }
|
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}, |
| 152 |
}; |
| 153 |
|
| 154 |
#ifdef CONFIG_LINUX
|
| 155 |
QemuOptsList qemu_fsdev_opts = {
|
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.name = "fsdev",
|
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.implied_opt_name = "fstype",
|
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.head = QTAILQ_HEAD_INITIALIZER(qemu_fsdev_opts.head), |
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.desc = {
|
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{
|
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.name = "fstype",
|
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.type = QEMU_OPT_STRING, |
| 163 |
}, {
|
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.name = "path",
|
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.type = QEMU_OPT_STRING, |
| 166 |
}, {
|
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.name = "security_model",
|
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.type = QEMU_OPT_STRING, |
| 169 |
}, |
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{ /*End of list */ }
|
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}, |
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}; |
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#endif
|
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|
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#ifdef CONFIG_LINUX
|
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QemuOptsList qemu_virtfs_opts = {
|
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.name = "virtfs",
|
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.implied_opt_name = "fstype",
|
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.head = QTAILQ_HEAD_INITIALIZER(qemu_virtfs_opts.head), |
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.desc = {
|
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{
|
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.name = "fstype",
|
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.type = QEMU_OPT_STRING, |
| 184 |
}, {
|
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.name = "path",
|
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.type = QEMU_OPT_STRING, |
| 187 |
}, {
|
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.name = "mount_tag",
|
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.type = QEMU_OPT_STRING, |
| 190 |
}, {
|
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.name = "security_model",
|
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.type = QEMU_OPT_STRING, |
| 193 |
}, |
| 194 |
|
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{ /*End of list */ }
|
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}, |
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}; |
| 198 |
#endif
|
| 199 |
|
| 200 |
QemuOptsList qemu_device_opts = {
|
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.name = "device",
|
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.implied_opt_name = "driver",
|
| 203 |
.head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head), |
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.desc = {
|
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/*
|
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* no elements => accept any
|
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* sanity checking will happen later
|
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* when setting device properties
|
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*/
|
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{ /* end if list */ }
|
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}, |
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}; |
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|
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QemuOptsList qemu_netdev_opts = {
|
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.name = "netdev",
|
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.implied_opt_name = "type",
|
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.head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), |
| 218 |
.desc = {
|
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/*
|
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* no elements => accept any params
|
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* validation will happen later
|
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*/
|
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{ /* end of list */ }
|
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}, |
| 225 |
}; |
| 226 |
|
| 227 |
QemuOptsList qemu_net_opts = {
|
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.name = "net",
|
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.implied_opt_name = "type",
|
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.head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), |
| 231 |
.desc = {
|
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/*
|
| 233 |
* no elements => accept any params
|
| 234 |
* validation will happen later
|
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*/
|
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{ /* end of list */ }
|
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}, |
| 238 |
}; |
| 239 |
|
| 240 |
QemuOptsList qemu_rtc_opts = {
|
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.name = "rtc",
|
| 242 |
.head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head), |
| 243 |
.desc = {
|
| 244 |
{
|
| 245 |
.name = "base",
|
| 246 |
.type = QEMU_OPT_STRING, |
| 247 |
},{
|
| 248 |
.name = "clock",
|
| 249 |
.type = QEMU_OPT_STRING, |
| 250 |
},{
|
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.name = "driftfix",
|
| 252 |
.type = QEMU_OPT_STRING, |
| 253 |
}, |
| 254 |
{ /* end if list */ }
|
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}, |
| 256 |
}; |
| 257 |
|
| 258 |
QemuOptsList qemu_global_opts = {
|
| 259 |
.name = "global",
|
| 260 |
.head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head), |
| 261 |
.desc = {
|
| 262 |
{
|
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.name = "driver",
|
| 264 |
.type = QEMU_OPT_STRING, |
| 265 |
},{
|
| 266 |
.name = "property",
|
| 267 |
.type = QEMU_OPT_STRING, |
| 268 |
},{
|
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.name = "value",
|
| 270 |
.type = QEMU_OPT_STRING, |
| 271 |
}, |
| 272 |
{ /* end if list */ }
|
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}, |
| 274 |
}; |
| 275 |
|
| 276 |
QemuOptsList qemu_mon_opts = {
|
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.name = "mon",
|
| 278 |
.implied_opt_name = "chardev",
|
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.head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head), |
| 280 |
.desc = {
|
| 281 |
{
|
| 282 |
.name = "mode",
|
| 283 |
.type = QEMU_OPT_STRING, |
| 284 |
},{
|
| 285 |
.name = "chardev",
|
| 286 |
.type = QEMU_OPT_STRING, |
| 287 |
},{
|
| 288 |
.name = "default",
|
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.type = QEMU_OPT_BOOL, |
| 290 |
}, |
| 291 |
{ /* end if list */ }
|
| 292 |
}, |
| 293 |
}; |
| 294 |
|
| 295 |
QemuOptsList qemu_cpudef_opts = {
|
| 296 |
.name = "cpudef",
|
| 297 |
.head = QTAILQ_HEAD_INITIALIZER(qemu_cpudef_opts.head), |
| 298 |
.desc = {
|
| 299 |
{
|
| 300 |
.name = "name",
|
| 301 |
.type = QEMU_OPT_STRING, |
| 302 |
},{
|
| 303 |
.name = "level",
|
| 304 |
.type = QEMU_OPT_NUMBER, |
| 305 |
},{
|
| 306 |
.name = "vendor",
|
| 307 |
.type = QEMU_OPT_STRING, |
| 308 |
},{
|
| 309 |
.name = "family",
|
| 310 |
.type = QEMU_OPT_NUMBER, |
| 311 |
},{
|
| 312 |
.name = "model",
|
| 313 |
.type = QEMU_OPT_NUMBER, |
| 314 |
},{
|
| 315 |
.name = "stepping",
|
| 316 |
.type = QEMU_OPT_NUMBER, |
| 317 |
},{
|
| 318 |
.name = "feature_edx", /* cpuid 0000_0001.edx */ |
| 319 |
.type = QEMU_OPT_STRING, |
| 320 |
},{
|
| 321 |
.name = "feature_ecx", /* cpuid 0000_0001.ecx */ |
| 322 |
.type = QEMU_OPT_STRING, |
| 323 |
},{
|
| 324 |
.name = "extfeature_edx", /* cpuid 8000_0001.edx */ |
| 325 |
.type = QEMU_OPT_STRING, |
| 326 |
},{
|
| 327 |
.name = "extfeature_ecx", /* cpuid 8000_0001.ecx */ |
| 328 |
.type = QEMU_OPT_STRING, |
| 329 |
},{
|
| 330 |
.name = "xlevel",
|
| 331 |
.type = QEMU_OPT_NUMBER, |
| 332 |
},{
|
| 333 |
.name = "model_id",
|
| 334 |
.type = QEMU_OPT_STRING, |
| 335 |
},{
|
| 336 |
.name = "vendor_override",
|
| 337 |
.type = QEMU_OPT_NUMBER, |
| 338 |
}, |
| 339 |
{ /* end of list */ }
|
| 340 |
}, |
| 341 |
}; |
| 342 |
|
| 343 |
static QemuOptsList *vm_config_groups[32] = { |
| 344 |
&qemu_drive_opts, |
| 345 |
&qemu_chardev_opts, |
| 346 |
&qemu_device_opts, |
| 347 |
&qemu_netdev_opts, |
| 348 |
&qemu_net_opts, |
| 349 |
&qemu_rtc_opts, |
| 350 |
&qemu_global_opts, |
| 351 |
&qemu_mon_opts, |
| 352 |
&qemu_cpudef_opts, |
| 353 |
NULL,
|
| 354 |
}; |
| 355 |
|
| 356 |
static QemuOptsList *find_list(QemuOptsList **lists, const char *group) |
| 357 |
{
|
| 358 |
int i;
|
| 359 |
|
| 360 |
for (i = 0; lists[i] != NULL; i++) { |
| 361 |
if (strcmp(lists[i]->name, group) == 0) |
| 362 |
break;
|
| 363 |
} |
| 364 |
if (lists[i] == NULL) { |
| 365 |
error_report("there is no option group \"%s\"", group);
|
| 366 |
} |
| 367 |
return lists[i];
|
| 368 |
} |
| 369 |
|
| 370 |
QemuOptsList *qemu_find_opts(const char *group) |
| 371 |
{
|
| 372 |
return find_list(vm_config_groups, group);
|
| 373 |
} |
| 374 |
|
| 375 |
void qemu_add_opts(QemuOptsList *list)
|
| 376 |
{
|
| 377 |
int entries, i;
|
| 378 |
|
| 379 |
entries = ARRAY_SIZE(vm_config_groups); |
| 380 |
entries--; /* keep list NULL terminated */
|
| 381 |
for (i = 0; i < entries; i++) { |
| 382 |
if (vm_config_groups[i] == NULL) { |
| 383 |
vm_config_groups[i] = list; |
| 384 |
return;
|
| 385 |
} |
| 386 |
} |
| 387 |
fprintf(stderr, "ran out of space in vm_config_groups");
|
| 388 |
abort(); |
| 389 |
} |
| 390 |
|
| 391 |
int qemu_set_option(const char *str) |
| 392 |
{
|
| 393 |
char group[64], id[64], arg[64]; |
| 394 |
QemuOptsList *list; |
| 395 |
QemuOpts *opts; |
| 396 |
int rc, offset;
|
| 397 |
|
| 398 |
rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
|
| 399 |
if (rc < 3 || str[offset] != '=') { |
| 400 |
error_report("can't parse: \"%s\"", str);
|
| 401 |
return -1; |
| 402 |
} |
| 403 |
|
| 404 |
list = qemu_find_opts(group); |
| 405 |
if (list == NULL) { |
| 406 |
return -1; |
| 407 |
} |
| 408 |
|
| 409 |
opts = qemu_opts_find(list, id); |
| 410 |
if (!opts) {
|
| 411 |
error_report("there is no %s \"%s\" defined",
|
| 412 |
list->name, id); |
| 413 |
return -1; |
| 414 |
} |
| 415 |
|
| 416 |
if (qemu_opt_set(opts, arg, str+offset+1) == -1) { |
| 417 |
return -1; |
| 418 |
} |
| 419 |
return 0; |
| 420 |
} |
| 421 |
|
| 422 |
int qemu_global_option(const char *str) |
| 423 |
{
|
| 424 |
char driver[64], property[64]; |
| 425 |
QemuOpts *opts; |
| 426 |
int rc, offset;
|
| 427 |
|
| 428 |
rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
|
| 429 |
if (rc < 2 || str[offset] != '=') { |
| 430 |
error_report("can't parse: \"%s\"", str);
|
| 431 |
return -1; |
| 432 |
} |
| 433 |
|
| 434 |
opts = qemu_opts_create(&qemu_global_opts, NULL, 0); |
| 435 |
qemu_opt_set(opts, "driver", driver);
|
| 436 |
qemu_opt_set(opts, "property", property);
|
| 437 |
qemu_opt_set(opts, "value", str+offset+1); |
| 438 |
return 0; |
| 439 |
} |
| 440 |
|
| 441 |
struct ConfigWriteData {
|
| 442 |
QemuOptsList *list; |
| 443 |
FILE *fp; |
| 444 |
}; |
| 445 |
|
| 446 |
static int config_write_opt(const char *name, const char *value, void *opaque) |
| 447 |
{
|
| 448 |
struct ConfigWriteData *data = opaque;
|
| 449 |
|
| 450 |
fprintf(data->fp, " %s = \"%s\"\n", name, value);
|
| 451 |
return 0; |
| 452 |
} |
| 453 |
|
| 454 |
static int config_write_opts(QemuOpts *opts, void *opaque) |
| 455 |
{
|
| 456 |
struct ConfigWriteData *data = opaque;
|
| 457 |
const char *id = qemu_opts_id(opts); |
| 458 |
|
| 459 |
if (id) {
|
| 460 |
fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
|
| 461 |
} else {
|
| 462 |
fprintf(data->fp, "[%s]\n", data->list->name);
|
| 463 |
} |
| 464 |
qemu_opt_foreach(opts, config_write_opt, data, 0);
|
| 465 |
fprintf(data->fp, "\n");
|
| 466 |
return 0; |
| 467 |
} |
| 468 |
|
| 469 |
void qemu_config_write(FILE *fp)
|
| 470 |
{
|
| 471 |
struct ConfigWriteData data = { .fp = fp };
|
| 472 |
QemuOptsList **lists = vm_config_groups; |
| 473 |
int i;
|
| 474 |
|
| 475 |
fprintf(fp, "# qemu config file\n\n");
|
| 476 |
for (i = 0; lists[i] != NULL; i++) { |
| 477 |
data.list = lists[i]; |
| 478 |
qemu_opts_foreach(data.list, config_write_opts, &data, 0);
|
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname) |
| 483 |
{
|
| 484 |
char line[1024], group[64], id[64], arg[64], value[1024]; |
| 485 |
Location loc; |
| 486 |
QemuOptsList *list = NULL;
|
| 487 |
QemuOpts *opts = NULL;
|
| 488 |
int res = -1, lno = 0; |
| 489 |
|
| 490 |
loc_push_none(&loc); |
| 491 |
while (fgets(line, sizeof(line), fp) != NULL) { |
| 492 |
loc_set_file(fname, ++lno); |
| 493 |
if (line[0] == '\n') { |
| 494 |
/* skip empty lines */
|
| 495 |
continue;
|
| 496 |
} |
| 497 |
if (line[0] == '#') { |
| 498 |
/* comment */
|
| 499 |
continue;
|
| 500 |
} |
| 501 |
if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) { |
| 502 |
/* group with id */
|
| 503 |
list = find_list(lists, group); |
| 504 |
if (list == NULL) |
| 505 |
goto out;
|
| 506 |
opts = qemu_opts_create(list, id, 1);
|
| 507 |
continue;
|
| 508 |
} |
| 509 |
if (sscanf(line, "[%63[^]]]", group) == 1) { |
| 510 |
/* group without id */
|
| 511 |
list = find_list(lists, group); |
| 512 |
if (list == NULL) |
| 513 |
goto out;
|
| 514 |
opts = qemu_opts_create(list, NULL, 0); |
| 515 |
continue;
|
| 516 |
} |
| 517 |
if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) { |
| 518 |
/* arg = value */
|
| 519 |
if (opts == NULL) { |
| 520 |
error_report("no group defined");
|
| 521 |
goto out;
|
| 522 |
} |
| 523 |
if (qemu_opt_set(opts, arg, value) != 0) { |
| 524 |
goto out;
|
| 525 |
} |
| 526 |
continue;
|
| 527 |
} |
| 528 |
error_report("parse error");
|
| 529 |
goto out;
|
| 530 |
} |
| 531 |
if (ferror(fp)) {
|
| 532 |
error_report("error reading file");
|
| 533 |
goto out;
|
| 534 |
} |
| 535 |
res = 0;
|
| 536 |
out:
|
| 537 |
loc_pop(&loc); |
| 538 |
return res;
|
| 539 |
} |
| 540 |
|
| 541 |
int qemu_read_config_file(const char *filename) |
| 542 |
{
|
| 543 |
FILE *f = fopen(filename, "r");
|
| 544 |
int ret;
|
| 545 |
|
| 546 |
if (f == NULL) { |
| 547 |
return -errno;
|
| 548 |
} |
| 549 |
|
| 550 |
ret = qemu_config_parse(f, vm_config_groups, filename); |
| 551 |
fclose(f); |
| 552 |
|
| 553 |
if (ret == 0) { |
| 554 |
return 0; |
| 555 |
} else {
|
| 556 |
return -EINVAL;
|
| 557 |
} |
| 558 |
} |