qemu-config.c

   1 #include "qemu-common.h"
   2 #include "qemu-option.h"
   3 #include "qemu-config.h"
   4
   5 QemuOptsList qemu_drive_opts = {
   6     .name = "drive",
   7     .head = TAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
   8     .desc = {
   9         {
  10             .name = "bus",
  11             .type = QEMU_OPT_NUMBER,
  12             .help = "bus number",
  13         },{
  14             .name = "unit",
  15             .type = QEMU_OPT_NUMBER,
  16             .help = "unit number (i.e. lun for scsi)",
  17         },{
  18             .name = "if",
  19             .type = QEMU_OPT_STRING,
  20             .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
  21         },{
  22             .name = "index",
  23             .type = QEMU_OPT_NUMBER,
  24         },{
  25             .name = "cyls",
  26             .type = QEMU_OPT_NUMBER,
  27             .help = "number of cylinders (ide disk geometry)",
  28         },{
  29             .name = "heads",
  30             .type = QEMU_OPT_NUMBER,
  31             .help = "number of heads (ide disk geometry)",
  32         },{
  33             .name = "secs",
  34             .type = QEMU_OPT_NUMBER,
  35             .help = "number of sectors (ide disk geometry)",
  36         },{
  37             .name = "trans",
  38             .type = QEMU_OPT_STRING,
  39             .help = "chs translation (auto, lba. none)",
  40         },{
  41             .name = "media",
  42             .type = QEMU_OPT_STRING,
  43             .help = "media type (disk, cdrom)",
  44         },{
  45             .name = "snapshot",
  46             .type = QEMU_OPT_BOOL,
  47         },{
  48             .name = "file",
  49             .type = QEMU_OPT_STRING,
  50             .help = "disk image",
  51         },{
  52             .name = "cache",
  53             .type = QEMU_OPT_STRING,
  54             .help = "host cache usage (none, writeback, writethrough)",
  55         },{
  56             .name = "format",
  57             .type = QEMU_OPT_STRING,
  58             .help = "disk format (raw, qcow2, ...)",
  59         },{
  60             .name = "serial",
  61             .type = QEMU_OPT_STRING,
  62         },{
  63             .name = "werror",
  64             .type = QEMU_OPT_STRING,
  65         },{
  66             .name = "addr",
  67             .type = QEMU_OPT_STRING,
  68             .help = "pci address (virtio only)",
  69         },
  70         { /* end if list */ }
  71     },
  72 };
  73
  74 QemuOptsList qemu_device_opts = {
  75     .name = "device",
  76     .head = TAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
  77     .desc = {
  78         /*
  79          * no elements => accept any
  80          * sanity checking will happen later
  81          * when setting device properties
  82          */
  83         { /* end if list */ }
  84     },
  85 };
  86
  87 static QemuOptsList *lists[] = {
  88     &qemu_drive_opts,
  89     &qemu_device_opts,
  90     NULL,
  91 };
  92
  93 int qemu_set_option(const char *str)
  94 {
  95     char group[64], id[64], arg[64];
  96     QemuOpts *opts;
  97     int i, rc, offset;
  98
  99     rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
 100     if (rc < 3 || str[offset] != '=') {
 101         fprintf(stderr, "can't parse: \"%s\"\n", str);
 102         return -1;
 103     }
 104
 105     for (i = 0; lists[i] != NULL; i++) {
 106         if (strcmp(lists[i]->name, group) == 0)
 107             break;
 108     }
 109     if (lists[i] == NULL) {
 110         fprintf(stderr, "there is no option group \"%s\"\n", group);
 111         return -1;
 112     }
 113
 114     opts = qemu_opts_find(lists[i], id);
 115     if (!opts) {
 116         fprintf(stderr, "there is no %s \"%s\" defined\n",
 117                 lists[i]->name, id);
 118         return -1;
 119     }
 120
 121     if (-1 == qemu_opt_set(opts, arg, str+offset+1)) {
 122         fprintf(stderr, "failed to set \"%s\" for %s \"%s\"\n",
 123                 arg, lists[i]->name, id);
 124         return -1;
 125     }
 126     return 0;
 127 }
 128