block: Move error actions from DriveInfo to BlockDriverState

That's where they belong semantically (block device host part), even
though the actions are actually executed by guest device code.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block.c

@@ -1206,6 +1206,18 @@ int bdrv_get_translation_hint(BlockDriverState *bs)
     return bs->translation;
 }
 
+void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error,
+                       BlockErrorAction on_write_error)
+{
+    bs->on_read_error = on_read_error;
+    bs->on_write_error = on_write_error;
+}
+
+BlockErrorAction bdrv_get_on_error(BlockDriverState *bs, int is_read)
+{
+    return is_read ? bs->on_read_error : bs->on_write_error;
+}
+
 int bdrv_is_removable(BlockDriverState *bs)
 {
     return bs->removable;

block.h

@@ -41,6 +41,11 @@ typedef struct QEMUSnapshotInfo {
 #define BDRV_SECTOR_SIZE   (1ULL << BDRV_SECTOR_BITS)
 #define BDRV_SECTOR_MASK   ~(BDRV_SECTOR_SIZE - 1)
 
+typedef enum {
+    BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
+    BLOCK_ERR_STOP_ANY
+} BlockErrorAction;
+
 typedef enum {
     BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP
 } BlockMonEventAction;
@@ -146,6 +151,9 @@ void bdrv_get_geometry_hint(BlockDriverState *bs,
                             int *pcyls, int *pheads, int *psecs);
 int bdrv_get_type_hint(BlockDriverState *bs);
 int bdrv_get_translation_hint(BlockDriverState *bs);
+void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error,
+                       BlockErrorAction on_write_error);
+BlockErrorAction bdrv_get_on_error(BlockDriverState *bs, int is_read);
 int bdrv_is_removable(BlockDriverState *bs);
 int bdrv_is_read_only(BlockDriverState *bs);
 int bdrv_is_sg(BlockDriverState *bs);

block_int.h

@@ -182,6 +182,7 @@ struct BlockDriverState {
        drivers. They are not used by the block driver */
     int cyls, heads, secs, translation;
     int type;
+    BlockErrorAction on_read_error, on_write_error;
     char device_name[32];
     unsigned long *dirty_bitmap;
     int64_t dirty_count;

blockdev.c

@@ -90,19 +90,6 @@ const char *drive_get_serial(BlockDriverState *bdrv)
     return "\0";
 }
 
-BlockInterfaceErrorAction drive_get_on_error(
-    BlockDriverState *bdrv, int is_read)
-{
-    DriveInfo *dinfo;
-
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if (dinfo->bdrv == bdrv)
-            return is_read ? dinfo->on_read_error : dinfo->on_write_error;
-    }
-
-    return is_read ? BLOCK_ERR_REPORT : BLOCK_ERR_STOP_ENOSPC;
-}
-
 static void bdrv_format_print(void *opaque, const char *name)
 {
     fprintf(stderr, " %s", name);
@@ -418,13 +405,13 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error)
     dinfo->type = type;
     dinfo->bus = bus_id;
     dinfo->unit = unit_id;
-    dinfo->on_read_error = on_read_error;
-    dinfo->on_write_error = on_write_error;
     dinfo->opts = opts;
     if (serial)
         strncpy(dinfo->serial, serial, sizeof(dinfo->serial) - 1);
     QTAILQ_INSERT_TAIL(&drives, dinfo, next);
 
+    bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error);
+
     switch(type) {
     case IF_IDE:
     case IF_SCSI:

blockdev.h

@@ -19,11 +19,6 @@ typedef enum {
     IF_COUNT
 } BlockInterfaceType;
 
-typedef enum {
-    BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
-    BLOCK_ERR_STOP_ANY
-} BlockInterfaceErrorAction;
-
 #define BLOCK_SERIAL_STRLEN 20
 
 typedef struct DriveInfo {
@@ -34,8 +29,6 @@ typedef struct DriveInfo {
     int bus;
     int unit;
     QemuOpts *opts;
-    BlockInterfaceErrorAction on_read_error;
-    BlockInterfaceErrorAction on_write_error;
     char serial[BLOCK_SERIAL_STRLEN + 1];
     QTAILQ_ENTRY(DriveInfo) next;
 } DriveInfo;
@@ -51,9 +44,6 @@ extern int drive_get_max_bus(BlockInterfaceType type);
 extern void drive_uninit(DriveInfo *dinfo);
 extern const char *drive_get_serial(BlockDriverState *bdrv);
 
-extern BlockInterfaceErrorAction drive_get_on_error(
-    BlockDriverState *bdrv, int is_read);
-
 extern QemuOpts *drive_add(const char *file, const char *fmt, ...);
 extern DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi,
                              int *fatal_error);

hw/ide/core.c

@@ -481,7 +481,7 @@ void ide_dma_error(IDEState *s)
 static int ide_handle_rw_error(IDEState *s, int error, int op)
 {
     int is_read = (op & BM_STATUS_RETRY_READ);
-    BlockInterfaceErrorAction action = drive_get_on_error(s->bs, is_read);
+    BlockErrorAction action = bdrv_get_on_error(s->bs, is_read);
 
     if (action == BLOCK_ERR_IGNORE) {
         bdrv_mon_event(s->bs, BDRV_ACTION_IGNORE, is_read);

hw/scsi-disk.c

@@ -182,7 +182,7 @@ static void scsi_read_data(SCSIDevice *d, uint32_t tag)
 static int scsi_handle_write_error(SCSIDiskReq *r, int error)
 {
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    BlockInterfaceErrorAction action = drive_get_on_error(s->bs, 0);
+    BlockErrorAction action = bdrv_get_on_error(s->bs, 0);
 
     if (action == BLOCK_ERR_IGNORE) {
         bdrv_mon_event(s->bs, BDRV_ACTION_IGNORE, 0);

hw/virtio-blk.c

@@ -58,8 +58,7 @@ static void virtio_blk_req_complete(VirtIOBlockReq *req, int status)
 static int virtio_blk_handle_rw_error(VirtIOBlockReq *req, int error,
     int is_read)
 {
-    BlockInterfaceErrorAction action =
+    BlockErrorAction action = bdrv_get_on_error(req->dev->bs, is_read);
-        drive_get_on_error(req->dev->bs, is_read);
     VirtIOBlock *s = req->dev;
 
     if (action == BLOCK_ERR_IGNORE) {