Archipelago » qemu

#include "qemu-common.h"

#include "qemu-option.h"

#include "qemu-config.h"

#include "sysemu.h"

#include "hw/qdev.h"

QemuOptsList qemu_drive_opts = {

    .name = "drive",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),

    .desc = {

        {

            .name = "bus",

            .type = QEMU_OPT_NUMBER,

            .help = "bus number",

        },{

            .name = "unit",

            .type = QEMU_OPT_NUMBER,

            .help = "unit number (i.e. lun for scsi)",

        },{

            .name = "if",

            .type = QEMU_OPT_STRING,

            .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",

        },{

            .name = "index",

            .type = QEMU_OPT_NUMBER,

        },{

            .name = "cyls",

            .type = QEMU_OPT_NUMBER,

            .help = "number of cylinders (ide disk geometry)",

        },{

            .name = "heads",

            .type = QEMU_OPT_NUMBER,

            .help = "number of heads (ide disk geometry)",

        },{

            .name = "secs",

            .type = QEMU_OPT_NUMBER,

            .help = "number of sectors (ide disk geometry)",

        },{

            .name = "trans",

            .type = QEMU_OPT_STRING,

            .help = "chs translation (auto, lba. none)",

        },{

            .name = "media",

            .type = QEMU_OPT_STRING,

            .help = "media type (disk, cdrom)",

        },{

            .name = "snapshot",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "file",

            .type = QEMU_OPT_STRING,

            .help = "disk image",

        },{

            .name = "cache",

            .type = QEMU_OPT_STRING,

            .help = "host cache usage (none, writeback, writethrough)",

        },{

            .name = "aio",

            .type = QEMU_OPT_STRING,

            .help = "host AIO implementation (threads, native)",

        },{

            .name = "format",

            .type = QEMU_OPT_STRING,

            .help = "disk format (raw, qcow2, ...)",

        },{

            .name = "serial",

            .type = QEMU_OPT_STRING,

        },{

            .name = "rerror",

            .type = QEMU_OPT_STRING,

        },{

            .name = "werror",

            .type = QEMU_OPT_STRING,

        },{

            .name = "addr",

            .type = QEMU_OPT_STRING,

            .help = "pci address (virtio only)",

        },{

            .name = "readonly",

            .type = QEMU_OPT_BOOL,

        },

        { /* end if list */ }

    },

};

QemuOptsList qemu_chardev_opts = {

    .name = "chardev",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),

    .desc = {

        {

            .name = "backend",

            .type = QEMU_OPT_STRING,

        },{

            .name = "path",

            .type = QEMU_OPT_STRING,

        },{

            .name = "host",

            .type = QEMU_OPT_STRING,

        },{

            .name = "port",

            .type = QEMU_OPT_STRING,

        },{

            .name = "localaddr",

            .type = QEMU_OPT_STRING,

        },{

            .name = "localport",

            .type = QEMU_OPT_STRING,

        },{

            .name = "to",

            .type = QEMU_OPT_NUMBER,

        },{

            .name = "ipv4",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "ipv6",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "wait",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "server",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "delay",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "telnet",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "width",

            .type = QEMU_OPT_NUMBER,

        },{

            .name = "height",

            .type = QEMU_OPT_NUMBER,

        },{

            .name = "cols",

            .type = QEMU_OPT_NUMBER,

        },{

            .name = "rows",

            .type = QEMU_OPT_NUMBER,

        },{

            .name = "mux",

            .type = QEMU_OPT_BOOL,

        },{

            .name = "signal",

            .type = QEMU_OPT_BOOL,

        },

        { /* end if list */ }

    },

};

QemuOptsList qemu_device_opts = {

    .name = "device",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),

    .desc = {

        /*

         * no elements => accept any

         * sanity checking will happen later

         * when setting device properties

         */

        { /* end if list */ }

    },

};

QemuOptsList qemu_netdev_opts = {

    .name = "netdev",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),

    .desc = {

        /*

         * no elements => accept any params

         * validation will happen later

         */

        { /* end of list */ }

    },

};

QemuOptsList qemu_net_opts = {

    .name = "net",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),

    .desc = {

        /*

         * no elements => accept any params

         * validation will happen later

         */

        { /* end of list */ }

    },

};

QemuOptsList qemu_rtc_opts = {

    .name = "rtc",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),

    .desc = {

        {

            .name = "base",

            .type = QEMU_OPT_STRING,

        },{

            .name = "clock",

            .type = QEMU_OPT_STRING,

#ifdef TARGET_I386

        },{

            .name = "driftfix",

            .type = QEMU_OPT_STRING,

#endif

        },

        { /* end if list */ }

    },

};

QemuOptsList qemu_global_opts = {

    .name = "global",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),

    .desc = {

        {

            .name = "driver",

            .type = QEMU_OPT_STRING,

        },{

            .name = "property",

            .type = QEMU_OPT_STRING,

        },{

            .name = "value",

            .type = QEMU_OPT_STRING,

        },

        { /* end if list */ }

    },

};

QemuOptsList qemu_mon_opts = {

    .name = "mon",

    .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),

    .desc = {

        {

            .name = "mode",

            .type = QEMU_OPT_STRING,

        },{

            .name = "chardev",

            .type = QEMU_OPT_STRING,

        },{

            .name = "default",

            .type = QEMU_OPT_BOOL,

        },

        { /* end if list */ }

    },

};

static QemuOptsList *lists[] = {

    &qemu_drive_opts,

    &qemu_chardev_opts,

    &qemu_device_opts,

    &qemu_netdev_opts,

    &qemu_net_opts,

    &qemu_rtc_opts,

    &qemu_global_opts,

    &qemu_mon_opts,

    NULL,

};

static QemuOptsList *find_list(const char *group)

{

    int i;

    for (i = 0; lists[i] != NULL; i++) {

        if (strcmp(lists[i]->name, group) == 0)

            break;

    }

    if (lists[i] == NULL) {

        qemu_error("there is no option group \"%s\"\n", group);

    }

    return lists[i];

}

int qemu_set_option(const char *str)

{

    char group[64], id[64], arg[64];

    QemuOptsList *list;

    QemuOpts *opts;

    int rc, offset;

    rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);

    if (rc < 3 || str[offset] != '=') {

        qemu_error("can't parse: \"%s\"\n", str);

        return -1;

    }

    list = find_list(group);

    if (list == NULL) {

        return -1;

    }

    opts = qemu_opts_find(list, id);

    if (!opts) {

        qemu_error("there is no %s \"%s\" defined\n",

                   list->name, id);

        return -1;

    }

    if (qemu_opt_set(opts, arg, str+offset+1) == -1) {

        return -1;

    }

    return 0;

}

int qemu_global_option(const char *str)

{

    char driver[64], property[64];

    QemuOpts *opts;

    int rc, offset;

    rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);

    if (rc < 2 || str[offset] != '=') {

        qemu_error("can't parse: \"%s\"\n", str);

        return -1;

    }

    opts = qemu_opts_create(&qemu_global_opts, NULL, 0);

    qemu_opt_set(opts, "driver", driver);

    qemu_opt_set(opts, "property", property);

    qemu_opt_set(opts, "value", str+offset+1);

    return 0;

}

static int qemu_add_one_global(QemuOpts *opts, void *opaque)

{

    GlobalProperty *g;

    g = qemu_mallocz(sizeof(*g));

    g->driver   = qemu_opt_get(opts, "driver");

    g->property = qemu_opt_get(opts, "property");

    g->value    = qemu_opt_get(opts, "value");

    qdev_prop_register_global(g);

    return 0;

}

void qemu_add_globals(void)

{

    qemu_opts_foreach(&qemu_global_opts, qemu_add_one_global, NULL, 0);

}

struct ConfigWriteData {

    QemuOptsList *list;

    FILE *fp;

};

static int config_write_opt(const char *name, const char *value, void *opaque)

{

    struct ConfigWriteData *data = opaque;

    fprintf(data->fp, "  %s = \"%s\"\n", name, value);

    return 0;

}

static int config_write_opts(QemuOpts *opts, void *opaque)

{

    struct ConfigWriteData *data = opaque;

    const char *id = qemu_opts_id(opts);

    if (id) {

        fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);

    } else {

        fprintf(data->fp, "[%s]\n", data->list->name);

    }

    qemu_opt_foreach(opts, config_write_opt, data, 0);

    fprintf(data->fp, "\n");

    return 0;

}

void qemu_config_write(FILE *fp)

{

    struct ConfigWriteData data = { .fp = fp };

    int i;

    fprintf(fp, "# qemu config file\n\n");

    for (i = 0; lists[i] != NULL; i++) {

        data.list = lists[i];

        qemu_opts_foreach(data.list, config_write_opts, &data, 0);

    }

}

int qemu_config_parse(FILE *fp)

{

    char line[1024], group[64], id[64], arg[64], value[1024];

    QemuOptsList *list = NULL;

    QemuOpts *opts = NULL;

    while (fgets(line, sizeof(line), fp) != NULL) {

        if (line[0] == '\n') {

            /* skip empty lines */

            continue;

        }

        if (line[0] == '#') {

            /* comment */

            continue;

        }

        if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {

            /* group with id */

            list = find_list(group);

            if (list == NULL)

                return -1;

            opts = qemu_opts_create(list, id, 1);

            continue;

        }

        if (sscanf(line, "[%63[^]]]", group) == 1) {

            /* group without id */

            list = find_list(group);

            if (list == NULL)

                return -1;

            opts = qemu_opts_create(list, NULL, 0);

            continue;

        }

        if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {

            /* arg = value */

            if (opts == NULL) {

                fprintf(stderr, "no group defined\n");

                return -1;

            }

            if (qemu_opt_set(opts, arg, value) != 0) {

                fprintf(stderr, "failed to set \"%s\" for %s\n",

                        arg, group);

                return -1;

            }

            continue;

        }

        fprintf(stderr, "parse error: %s\n", line);

        return -1;

    }

    return 0;

}