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kill drives_table

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First step cleaning up the drives handling.  This one does nothing but
removing drives_table[], still it became seriously big.

drive_get_index() is gone and is replaced by drives_get() which hands
out DriveInfo pointers instead of a table index.  This needs adaption in
*tons* of places all over.

The drives are now maintained as linked list.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann authored and Anthony Liguori committed 2009-07-27 14:08:23 -05:00
1 parent 8a14daa5a1
commit 751c6a1704
36 files changed
+308 -343
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savevm.c
+18 -14
View File
@@ -1011,12 +1011,12 @@ static int bdrv_has_snapshot(BlockDriverState *bs)
static BlockDriverState *get_bs_snapshots(void)
{
BlockDriverState *bs;
int i;
DriveInfo *dinfo;
if (bs_snapshots)
return bs_snapshots;
for(i = 0; i <= nb_drives; i++) {
bs = drives_table[i].bdrv;
TAILQ_FOREACH(dinfo, &drives, next) {
bs = dinfo->bdrv;
if (bdrv_can_snapshot(bs))
goto ok;
}
@@ -1050,9 +1050,10 @@ static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info,
void do_savevm(Monitor *mon, const char *name)
{
DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1;
int must_delete, ret, i;
int must_delete, ret;
QEMUFile *f;
int saved_vm_running;
uint32_t vm_state_size;
@@ -1118,8 +1119,8 @@ void do_savevm(Monitor *mon, const char *name)
/* create the snapshots */
for(i = 0; i < nb_drives; i++) {
bs1 = drives_table[i].bdrv;
TAILQ_FOREACH(dinfo, &drives, next) {
bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
if (must_delete) {
ret = bdrv_snapshot_delete(bs1, old_sn->id_str);
@@ -1146,10 +1147,11 @@ void do_savevm(Monitor *mon, const char *name)
void do_loadvm(Monitor *mon, const char *name)
{
DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo sn;
QEMUFile *f;
int i, ret;
int ret;
int saved_vm_running;
bs = get_bs_snapshots();
@@ -1164,8 +1166,8 @@ void do_loadvm(Monitor *mon, const char *name)
saved_vm_running = vm_running;
vm_stop(0);
for(i = 0; i <= nb_drives; i++) {
bs1 = drives_table[i].bdrv;
TAILQ_FOREACH(dinfo, &drives, next) {
bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
ret = bdrv_snapshot_goto(bs1, name);
if (ret < 0) {
@@ -1217,8 +1219,9 @@ void do_loadvm(Monitor *mon, const char *name)
void do_delvm(Monitor *mon, const char *name)
{
DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
int i, ret;
int ret;
bs = get_bs_snapshots();
if (!bs) {
@@ -1226,8 +1229,8 @@ void do_delvm(Monitor *mon, const char *name)
return;
}
for(i = 0; i <= nb_drives; i++) {
bs1 = drives_table[i].bdrv;
TAILQ_FOREACH(dinfo, &drives, next) {
bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
ret = bdrv_snapshot_delete(bs1, name);
if (ret < 0) {
@@ -1245,6 +1248,7 @@ void do_delvm(Monitor *mon, const char *name)
void do_info_snapshots(Monitor *mon)
{
DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo *sn_tab, *sn;
int nb_sns, i;
@@ -1256,8 +1260,8 @@ void do_info_snapshots(Monitor *mon)
return;
}
monitor_printf(mon, "Snapshot devices:");
for(i = 0; i <= nb_drives; i++) {
bs1 = drives_table[i].bdrv;
TAILQ_FOREACH(dinfo, &drives, next) {
bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
if (bs == bs1)
monitor_printf(mon, " %s", bdrv_get_device_name(bs1));