65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
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* Common code for block device models
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#include "sysemu/blockdev.h"
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#include "hw/block-common.h"
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#include "qemu/error-report.h"
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void blkconf_serial(BlockConf *conf, char **serial)
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{
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DriveInfo *dinfo;
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if (!*serial) {
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/* try to fall back to value set with legacy -drive serial=... */
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dinfo = drive_get_by_blockdev(conf->bs);
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if (dinfo->serial) {
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*serial = g_strdup(dinfo->serial);
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}
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}
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}
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int blkconf_geometry(BlockConf *conf, int *ptrans,
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unsigned cyls_max, unsigned heads_max, unsigned secs_max)
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{
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DriveInfo *dinfo;
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if (!conf->cyls && !conf->heads && !conf->secs) {
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/* try to fall back to value set with legacy -drive cyls=... */
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dinfo = drive_get_by_blockdev(conf->bs);
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conf->cyls = dinfo->cyls;
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conf->heads = dinfo->heads;
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conf->secs = dinfo->secs;
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if (ptrans) {
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*ptrans = dinfo->trans;
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}
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}
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if (!conf->cyls && !conf->heads && !conf->secs) {
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hd_geometry_guess(conf->bs,
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&conf->cyls, &conf->heads, &conf->secs,
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ptrans);
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} else if (ptrans && *ptrans == BIOS_ATA_TRANSLATION_AUTO) {
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*ptrans = hd_bios_chs_auto_trans(conf->cyls, conf->heads, conf->secs);
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}
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if (conf->cyls || conf->heads || conf->secs) {
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if (conf->cyls < 1 || conf->cyls > cyls_max) {
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error_report("cyls must be between 1 and %u", cyls_max);
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return -1;
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}
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if (conf->heads < 1 || conf->heads > heads_max) {
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error_report("heads must be between 1 and %u", heads_max);
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return -1;
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}
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if (conf->secs < 1 || conf->secs > secs_max) {
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error_report("secs must be between 1 and %u", secs_max);
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return -1;
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}
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}
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return 0;
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}
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