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block: Support driver specific options in drive_init() 

Any non-default -drive options are now passed down to the block drivers.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2013-03-15 10:35:07 +01:00 committed by Stefan Hajnoczi
parent bb44619b06
commit 0006383e15
1 changed files with 59 additions and 10 deletions
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69
blockdev.c
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@ -22,6 +22,7 @@
#include "sysemu/arch_init.h"
static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
extern QemuOptsList qemu_common_drive_opts;
static const char *const if_name[IF_COUNT] = {
[IF_NONE] = "none",
@ -288,7 +289,7 @@ static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp)
return true;
}
DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
{
const char *buf;
const char *file = NULL;
@ -311,10 +312,36 @@ DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
bool copy_on_read;
int ret;
Error *error = NULL;
QemuOpts *opts;
QDict *bs_opts;
const char *id;
translation = BIOS_ATA_TRANSLATION_AUTO;
media = MEDIA_DISK;
/* Check common options by copying from all_opts to opts, all other options
* are stored in bs_opts. */
id = qemu_opts_id(all_opts);
opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error);
if (error_is_set(&error)) {
qerror_report_err(error);
error_free(error);
return NULL;
}
bs_opts = qdict_new();
qemu_opts_to_qdict(all_opts, bs_opts);
qemu_opts_absorb_qdict(opts, bs_opts, &error);
if (error_is_set(&error)) {
qerror_report_err(error);
error_free(error);
return NULL;
}
if (id) {
qdict_del(bs_opts, "id");
}
/* extract parameters */
bus_id = qemu_opt_get_number(opts, "bus", 0);
unit_id = qemu_opt_get_number(opts, "unit", -1);
@ -565,7 +592,7 @@ DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
dinfo->heads = heads;
dinfo->secs = secs;
dinfo->trans = translation;
dinfo->opts = opts;
dinfo->opts = all_opts;
dinfo->refcount = 1;
if (serial != NULL) {
dinfo->serial = g_strdup(serial);
@ -590,17 +617,20 @@ DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
case IF_MTD:
break;
case IF_VIRTIO:
{
/* add virtio block device */
opts = qemu_opts_create_nofail(qemu_find_opts("device"));
QemuOpts *devopts;
devopts = qemu_opts_create_nofail(qemu_find_opts("device"));
if (arch_type == QEMU_ARCH_S390X) {
qemu_opt_set(opts, "driver", "virtio-blk-s390");
qemu_opt_set(devopts, "driver", "virtio-blk-s390");
} else {
qemu_opt_set(opts, "driver", "virtio-blk-pci");
qemu_opt_set(devopts, "driver", "virtio-blk-pci");
}
qemu_opt_set(opts, "drive", dinfo->id);
qemu_opt_set(devopts, "drive", dinfo->id);
if (devaddr)
qemu_opt_set(opts, "addr", devaddr);
qemu_opt_set(devopts, "addr", devaddr);
break;
}
default:
abort();
}
@ -638,7 +668,9 @@ DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
error_report("warning: disabling copy_on_read on readonly drive");
}
ret = bdrv_open(dinfo->bdrv, file, NULL, bdrv_flags, drv);
ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv);
bs_opts = NULL;
if (ret < 0) {
if (ret == -EMEDIUMTYPE) {
error_report("could not open disk image %s: not in %s format",
@ -652,9 +684,14 @@ DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
if (bdrv_key_required(dinfo->bdrv))
autostart = 0;
qemu_opts_del(opts);
return dinfo;
err:
qemu_opts_del(opts);
QDECREF(bs_opts);
bdrv_delete(dinfo->bdrv);
g_free(dinfo->id);
QTAILQ_REMOVE(&drives, dinfo, next);
@ -1464,9 +1501,9 @@ BlockJobInfoList *qmp_query_block_jobs(Error **errp)
return dummy.next;
}
QemuOptsList qemu_drive_opts = {
QemuOptsList qemu_common_drive_opts = {
.name = "drive",
.head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
.head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head),
.desc = {
{
.name = "bus",
@ -1585,3 +1622,15 @@ QemuOptsList qemu_drive_opts = {
{ /* end of list */ }
},
};
QemuOptsList qemu_drive_opts = {
.name = "drive",
.head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
.desc = {
/*
* no elements => accept any params
* validation will happen later
*/
{ /* end of list */ }
},
};