mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-07-24 12:13:32 +00:00
blockdev: Move bus/unit/index processing to drive_init
This requires moving the automatic ID generation at the same time, so let's do that as well. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf
parent
2692929802
commit
87a899c509
157
blockdev.c
157
blockdev.c
|
|
@ -315,10 +315,6 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
|
|||
const char *buf;
|
||||
const char *file = NULL;
|
||||
const char *serial;
|
||||
const char *mediastr = "";
|
||||
int bus_id, unit_id;
|
||||
int max_devs;
|
||||
int index;
|
||||
int ro = 0;
|
||||
int bdrv_flags = 0;
|
||||
int on_read_error, on_write_error;
|
||||
|
|
@ -358,10 +354,6 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
|
|||
has_driver_specific_opts = !!qdict_size(bs_opts);
|
||||
|
||||
/* extract parameters */
|
||||
bus_id = qemu_opt_get_number(opts, "bus", 0);
|
||||
unit_id = qemu_opt_get_number(opts, "unit", -1);
|
||||
index = qemu_opt_get_number(opts, "index", -1);
|
||||
|
||||
snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
|
||||
ro = qemu_opt_get_bool(opts, "read-only", 0);
|
||||
copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false);
|
||||
|
|
@ -369,8 +361,6 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
|
|||
file = qemu_opt_get(opts, "file");
|
||||
serial = qemu_opt_get(opts, "serial");
|
||||
|
||||
max_devs = if_max_devs[type];
|
||||
|
||||
if ((buf = qemu_opt_get(opts, "discard")) != NULL) {
|
||||
if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) {
|
||||
error_report("invalid discard option");
|
||||
|
|
@ -485,66 +475,6 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
|
|||
}
|
||||
}
|
||||
|
||||
/* compute bus and unit according index */
|
||||
|
||||
if (index != -1) {
|
||||
if (bus_id != 0 || unit_id != -1) {
|
||||
error_report("index cannot be used with bus and unit");
|
||||
return NULL;
|
||||
}
|
||||
bus_id = drive_index_to_bus_id(type, index);
|
||||
unit_id = drive_index_to_unit_id(type, index);
|
||||
}
|
||||
|
||||
/* if user doesn't specify a unit_id,
|
||||
* try to find the first free
|
||||
*/
|
||||
|
||||
if (unit_id == -1) {
|
||||
unit_id = 0;
|
||||
while (drive_get(type, bus_id, unit_id) != NULL) {
|
||||
unit_id++;
|
||||
if (max_devs && unit_id >= max_devs) {
|
||||
unit_id -= max_devs;
|
||||
bus_id++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* check unit id */
|
||||
|
||||
if (max_devs && unit_id >= max_devs) {
|
||||
error_report("unit %d too big (max is %d)",
|
||||
unit_id, max_devs - 1);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* catch multiple definitions
|
||||
*/
|
||||
|
||||
if (drive_get(type, bus_id, unit_id) != NULL) {
|
||||
error_report("drive with bus=%d, unit=%d (index=%d) exists",
|
||||
bus_id, unit_id, index);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* no id supplied -> create one */
|
||||
if (qemu_opts_id(opts) == NULL) {
|
||||
char *new_id;
|
||||
if (type == IF_IDE || type == IF_SCSI) {
|
||||
mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
|
||||
}
|
||||
if (max_devs) {
|
||||
new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id,
|
||||
mediastr, unit_id);
|
||||
} else {
|
||||
new_id = g_strdup_printf("%s%s%i", if_name[type],
|
||||
mediastr, unit_id);
|
||||
}
|
||||
qemu_opts_set_id(opts, new_id);
|
||||
}
|
||||
|
||||
/* init */
|
||||
dinfo = g_malloc0(sizeof(*dinfo));
|
||||
dinfo->id = g_strdup(qemu_opts_id(opts));
|
||||
|
|
@ -553,8 +483,6 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
|
|||
dinfo->bdrv->read_only = ro;
|
||||
dinfo->devaddr = devaddr;
|
||||
dinfo->type = type;
|
||||
dinfo->bus = bus_id;
|
||||
dinfo->unit = unit_id;
|
||||
dinfo->refcount = 1;
|
||||
if (serial != NULL) {
|
||||
dinfo->serial = g_strdup(serial);
|
||||
|
|
@ -680,6 +608,18 @@ QemuOptsList qemu_legacy_drive_opts = {
|
|||
.head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head),
|
||||
.desc = {
|
||||
{
|
||||
.name = "bus",
|
||||
.type = QEMU_OPT_NUMBER,
|
||||
.help = "bus number",
|
||||
},{
|
||||
.name = "unit",
|
||||
.type = QEMU_OPT_NUMBER,
|
||||
.help = "unit number (i.e. lun for scsi)",
|
||||
},{
|
||||
.name = "index",
|
||||
.type = QEMU_OPT_NUMBER,
|
||||
.help = "index number",
|
||||
},{
|
||||
.name = "media",
|
||||
.type = QEMU_OPT_STRING,
|
||||
.help = "media type (disk, cdrom)",
|
||||
|
|
@ -721,6 +661,7 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
|
|||
DriveMediaType media = MEDIA_DISK;
|
||||
BlockInterfaceType type;
|
||||
int cyls, heads, secs, translation;
|
||||
int max_devs, bus_id, unit_id, index;
|
||||
Error *local_err = NULL;
|
||||
|
||||
/* Change legacy command line options into QMP ones */
|
||||
|
|
@ -864,6 +805,63 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
|
|||
}
|
||||
}
|
||||
|
||||
/* Device address specified by bus/unit or index.
|
||||
* If none was specified, try to find the first free one. */
|
||||
bus_id = qemu_opt_get_number(legacy_opts, "bus", 0);
|
||||
unit_id = qemu_opt_get_number(legacy_opts, "unit", -1);
|
||||
index = qemu_opt_get_number(legacy_opts, "index", -1);
|
||||
|
||||
max_devs = if_max_devs[type];
|
||||
|
||||
if (index != -1) {
|
||||
if (bus_id != 0 || unit_id != -1) {
|
||||
error_report("index cannot be used with bus and unit");
|
||||
goto fail;
|
||||
}
|
||||
bus_id = drive_index_to_bus_id(type, index);
|
||||
unit_id = drive_index_to_unit_id(type, index);
|
||||
}
|
||||
|
||||
if (unit_id == -1) {
|
||||
unit_id = 0;
|
||||
while (drive_get(type, bus_id, unit_id) != NULL) {
|
||||
unit_id++;
|
||||
if (max_devs && unit_id >= max_devs) {
|
||||
unit_id -= max_devs;
|
||||
bus_id++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (max_devs && unit_id >= max_devs) {
|
||||
error_report("unit %d too big (max is %d)", unit_id, max_devs - 1);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (drive_get(type, bus_id, unit_id) != NULL) {
|
||||
error_report("drive with bus=%d, unit=%d (index=%d) exists",
|
||||
bus_id, unit_id, index);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* no id supplied -> create one */
|
||||
if (qemu_opts_id(all_opts) == NULL) {
|
||||
char *new_id;
|
||||
const char *mediastr = "";
|
||||
if (type == IF_IDE || type == IF_SCSI) {
|
||||
mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
|
||||
}
|
||||
if (max_devs) {
|
||||
new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id,
|
||||
mediastr, unit_id);
|
||||
} else {
|
||||
new_id = g_strdup_printf("%s%s%i", if_name[type],
|
||||
mediastr, unit_id);
|
||||
}
|
||||
qdict_put(bs_opts, "id", qstring_from_str(new_id));
|
||||
g_free(new_id);
|
||||
}
|
||||
|
||||
/* Actual block device init: Functionality shared with blockdev-add */
|
||||
dinfo = blockdev_init(bs_opts, type, media);
|
||||
if (dinfo == NULL) {
|
||||
|
|
@ -879,6 +877,9 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
|
|||
dinfo->secs = secs;
|
||||
dinfo->trans = translation;
|
||||
|
||||
dinfo->bus = bus_id;
|
||||
dinfo->unit = unit_id;
|
||||
|
||||
fail:
|
||||
qemu_opts_del(legacy_opts);
|
||||
return dinfo;
|
||||
|
|
@ -2214,18 +2215,6 @@ QemuOptsList qemu_common_drive_opts = {
|
|||
.head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head),
|
||||
.desc = {
|
||||
{
|
||||
.name = "bus",
|
||||
.type = QEMU_OPT_NUMBER,
|
||||
.help = "bus number",
|
||||
},{
|
||||
.name = "unit",
|
||||
.type = QEMU_OPT_NUMBER,
|
||||
.help = "unit number (i.e. lun for scsi)",
|
||||
},{
|
||||
.name = "index",
|
||||
.type = QEMU_OPT_NUMBER,
|
||||
.help = "index number",
|
||||
},{
|
||||
.name = "snapshot",
|
||||
.type = QEMU_OPT_BOOL,
|
||||
.help = "enable/disable snapshot mode",
|
||||
|
|
|
|||
Loading…
Reference in a new issue