42262ba860
Add functions to parse QemuOpts from a git-style config file. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
349 lines
8.7 KiB
C
349 lines
8.7 KiB
C
#include "qemu-common.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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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,
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},{
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.name = "file",
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.type = QEMU_OPT_STRING,
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.help = "disk image",
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},{
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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)",
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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 = "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 if list */ }
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},
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};
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QemuOptsList qemu_chardev_opts = {
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.name = "chardev",
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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,
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},{
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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,
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},{
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.name = "wait",
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.type = QEMU_OPT_BOOL,
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},{
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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,
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},{
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.name = "telnet",
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.type = QEMU_OPT_BOOL,
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},{
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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,
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},{
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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,
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},{
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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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},
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};
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QemuOptsList qemu_device_opts = {
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.name = "device",
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.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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QemuOptsList qemu_netdev_opts = {
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.name = "netdev",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
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.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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},
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};
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QemuOptsList qemu_net_opts = {
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.name = "net",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
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.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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},
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};
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QemuOptsList qemu_rtc_opts = {
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.name = "rtc",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
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.desc = {
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{
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.name = "base",
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.type = QEMU_OPT_STRING,
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},{
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.name = "clock",
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.type = QEMU_OPT_STRING,
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#ifdef TARGET_I386
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},{
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.name = "driftfix",
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.type = QEMU_OPT_STRING,
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#endif
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},
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{ /* end if list */ }
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},
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};
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static QemuOptsList *lists[] = {
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&qemu_drive_opts,
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&qemu_chardev_opts,
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&qemu_device_opts,
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&qemu_netdev_opts,
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&qemu_net_opts,
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&qemu_rtc_opts,
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NULL,
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};
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static QemuOptsList *find_list(const char *group)
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{
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int i;
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for (i = 0; lists[i] != NULL; i++) {
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if (strcmp(lists[i]->name, group) == 0)
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break;
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}
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if (lists[i] == NULL) {
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qemu_error("there is no option group \"%s\"\n", group);
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}
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return lists[i];
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}
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int qemu_set_option(const char *str)
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{
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char group[64], id[64], arg[64];
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QemuOptsList *list;
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QemuOpts *opts;
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int rc, offset;
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rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
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if (rc < 3 || str[offset] != '=') {
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qemu_error("can't parse: \"%s\"\n", str);
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return -1;
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}
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list = find_list(group);
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if (list == NULL) {
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return -1;
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}
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opts = qemu_opts_find(list, id);
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if (!opts) {
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qemu_error("there is no %s \"%s\" defined\n",
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list->name, id);
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return -1;
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}
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if (qemu_opt_set(opts, arg, str+offset+1) == -1) {
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return -1;
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}
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return 0;
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}
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struct ConfigWriteData {
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QemuOptsList *list;
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FILE *fp;
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};
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static int config_write_opt(const char *name, const char *value, void *opaque)
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{
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struct ConfigWriteData *data = opaque;
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fprintf(data->fp, " %s = \"%s\"\n", name, value);
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return 0;
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}
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static int config_write_opts(QemuOpts *opts, void *opaque)
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{
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struct ConfigWriteData *data = opaque;
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const char *id = qemu_opts_id(opts);
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if (id) {
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fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
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} else {
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fprintf(data->fp, "[%s]\n", data->list->name);
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}
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qemu_opt_foreach(opts, config_write_opt, data, 0);
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fprintf(data->fp, "\n");
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return 0;
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}
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void qemu_config_write(FILE *fp)
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{
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struct ConfigWriteData data = { .fp = fp };
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int i;
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fprintf(fp, "# qemu config file\n\n");
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for (i = 0; lists[i] != NULL; i++) {
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data.list = lists[i];
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qemu_opts_foreach(data.list, config_write_opts, &data, 0);
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}
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}
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int qemu_config_parse(FILE *fp)
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{
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char line[1024], group[64], id[64], arg[64], value[1024];
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QemuOptsList *list = NULL;
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QemuOpts *opts = NULL;
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while (fgets(line, sizeof(line), fp) != NULL) {
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if (line[0] == '\n') {
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/* skip empty lines */
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continue;
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}
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if (line[0] == '#') {
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/* comment */
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continue;
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}
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if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {
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/* group with id */
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list = find_list(group);
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if (list == NULL)
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return -1;
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opts = qemu_opts_create(list, id, 1);
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continue;
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}
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if (sscanf(line, "[%63[^]]]", group) == 1) {
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/* group without id */
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list = find_list(group);
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if (list == NULL)
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return -1;
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opts = qemu_opts_create(list, NULL, 0);
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continue;
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}
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if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
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/* arg = value */
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if (opts == NULL) {
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fprintf(stderr, "no group defined\n");
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return -1;
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}
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if (qemu_opt_set(opts, arg, value) != 0) {
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fprintf(stderr, "failed to set \"%s\" for %s\n",
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arg, group);
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return -1;
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}
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continue;
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}
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fprintf(stderr, "parse error: %s\n", line);
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return -1;
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}
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return 0;
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}
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