void blkconf_geometry(BlockConf *conf, int *ptrans, unsigned cyls_max, unsigned heads_max, unsigned secs_max, Error **errp) { DriveInfo *dinfo; if (!conf->cyls && !conf->heads && !conf->secs) { /* try to fall back to value set with legacy -drive cyls=... */ dinfo = drive_get_by_blockdev(conf->bs); conf->cyls = dinfo->cyls; conf->heads = dinfo->heads; conf->secs = dinfo->secs; if (ptrans) { *ptrans = dinfo->trans; } } if (!conf->cyls && !conf->heads && !conf->secs) { hd_geometry_guess(conf->bs, &conf->cyls, &conf->heads, &conf->secs, ptrans); } else if (ptrans && *ptrans == BIOS_ATA_TRANSLATION_AUTO) { *ptrans = hd_bios_chs_auto_trans(conf->cyls, conf->heads, conf->secs); } if (conf->cyls || conf->heads || conf->secs) { if (conf->cyls < 1 || conf->cyls > cyls_max) { error_setg(errp, "cyls must be between 1 and %u", cyls_max); return; } if (conf->heads < 1 || conf->heads > heads_max) { error_setg(errp, "heads must be between 1 and %u", heads_max); return; } if (conf->secs < 1 || conf->secs > secs_max) { error_setg(errp, "secs must be between 1 and %u", secs_max); return; } } }