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 static QemuOptsList *lists[] = {
  75     &qemu_drive_opts,
  76     NULL,
  77 };
  78
  79 int qemu_set_option(const char *str)
  80 {
  81     char group[64], id[64], arg[64];
  82     QemuOpts *opts;
  83     int i, rc, offset;
  84
  85     rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
  86     if (rc < 3 || str[offset] != '=') {
  87         fprintf(stderr, "can't parse: \"%s\"\n", str);
  88         return -1;
  89     }
  90
  91     for (i = 0; lists[i] != NULL; i++) {
  92         if (strcmp(lists[i]->name, group) == 0)
  93             break;
  94     }
  95     if (lists[i] == NULL) {
  96         fprintf(stderr, "there is no option group \"%s\"\n", group);
  97         return -1;
  98     }
  99
 100     opts = qemu_opts_find(lists[i], id);
 101     if (!opts) {
 102         fprintf(stderr, "there is no %s \"%s\" defined\n",
 103                 lists[i]->name, id);
 104         return -1;
 105     }
 106
 107     if (-1 == qemu_opt_set(opts, arg, str+offset+1)) {
 108         fprintf(stderr, "failed to set \"%s\" for %s \"%s\"\n",
 109                 arg, lists[i]->name, id);
 110         return -1;
 111     }
 112     return 0;
 113 }
 114