root / hw / block-common.c @ 9c17d615
History | View | Annotate | Download (2 kB)
1 |
/*
|
---|---|
2 |
* Common code for block device models
|
3 |
*
|
4 |
* Copyright (C) 2012 Red Hat, Inc.
|
5 |
*
|
6 |
* This work is licensed under the terms of the GNU GPL, version 2 or
|
7 |
* later. See the COPYING file in the top-level directory.
|
8 |
*/
|
9 |
|
10 |
#include "sysemu/blockdev.h" |
11 |
#include "hw/block-common.h" |
12 |
#include "qemu/error-report.h" |
13 |
|
14 |
void blkconf_serial(BlockConf *conf, char **serial) |
15 |
{ |
16 |
DriveInfo *dinfo; |
17 |
|
18 |
if (!*serial) {
|
19 |
/* try to fall back to value set with legacy -drive serial=... */
|
20 |
dinfo = drive_get_by_blockdev(conf->bs); |
21 |
if (dinfo->serial) {
|
22 |
*serial = g_strdup(dinfo->serial); |
23 |
} |
24 |
} |
25 |
} |
26 |
|
27 |
int blkconf_geometry(BlockConf *conf, int *ptrans, |
28 |
unsigned cyls_max, unsigned heads_max, unsigned secs_max) |
29 |
{ |
30 |
DriveInfo *dinfo; |
31 |
|
32 |
if (!conf->cyls && !conf->heads && !conf->secs) {
|
33 |
/* try to fall back to value set with legacy -drive cyls=... */
|
34 |
dinfo = drive_get_by_blockdev(conf->bs); |
35 |
conf->cyls = dinfo->cyls; |
36 |
conf->heads = dinfo->heads; |
37 |
conf->secs = dinfo->secs; |
38 |
if (ptrans) {
|
39 |
*ptrans = dinfo->trans; |
40 |
} |
41 |
} |
42 |
if (!conf->cyls && !conf->heads && !conf->secs) {
|
43 |
hd_geometry_guess(conf->bs, |
44 |
&conf->cyls, &conf->heads, &conf->secs, |
45 |
ptrans); |
46 |
} else if (ptrans && *ptrans == BIOS_ATA_TRANSLATION_AUTO) { |
47 |
*ptrans = hd_bios_chs_auto_trans(conf->cyls, conf->heads, conf->secs); |
48 |
} |
49 |
if (conf->cyls || conf->heads || conf->secs) {
|
50 |
if (conf->cyls < 1 || conf->cyls > cyls_max) { |
51 |
error_report("cyls must be between 1 and %u", cyls_max);
|
52 |
return -1; |
53 |
} |
54 |
if (conf->heads < 1 || conf->heads > heads_max) { |
55 |
error_report("heads must be between 1 and %u", heads_max);
|
56 |
return -1; |
57 |
} |
58 |
if (conf->secs < 1 || conf->secs > secs_max) { |
59 |
error_report("secs must be between 1 and %u", secs_max);
|
60 |
return -1; |
61 |
} |
62 |
} |
63 |
return 0; |
64 |
} |