[Qemu-devel] [PATCH 54/55] block: New change_media_cb() parameter load

[Markus Armbruster <armbru@redhat.com>]

To let device models distinguish between eject and load.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 block.c        |   12 ++++++------
 block.h        |    3 ++-
 hw/fdc.c       |    2 +-
 hw/ide/core.c  |    2 +-
 hw/scsi-disk.c |    2 +-
 hw/sd.c        |    2 +-
 6 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/block.c b/block.c
index b94864c..53a433a 100644
--- a/block.c
+++ b/block.c
@@ -43,7 +43,7 @@
 #include <windows.h>
 #endif
 
-static void bdrv_dev_change_media_cb(BlockDriverState *bs);
+static void bdrv_dev_change_media_cb(BlockDriverState *bs, bool load);
 static BlockDriverAIOCB *bdrv_aio_readv_em(BlockDriverState *bs,
         int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
         BlockDriverCompletionFunc *cb, void *opaque);
@@ -636,7 +636,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, int flags,
     }
 
     if (!bdrv_key_required(bs)) {
-        bdrv_dev_change_media_cb(bs);
+        bdrv_dev_change_media_cb(bs, true);
     }
 
     return 0;
@@ -672,7 +672,7 @@ void bdrv_close(BlockDriverState *bs)
             bdrv_close(bs->file);
         }
 
-        bdrv_dev_change_media_cb(bs);
+        bdrv_dev_change_media_cb(bs, false);
     }
 }
 
@@ -755,10 +755,10 @@ void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops,
     }
 }
 
-static void bdrv_dev_change_media_cb(BlockDriverState *bs)
+static void bdrv_dev_change_media_cb(BlockDriverState *bs, bool load)
 {
     if (bs->dev_ops && bs->dev_ops->change_media_cb) {
-        bs->dev_ops->change_media_cb(bs->dev_opaque);
+        bs->dev_ops->change_media_cb(bs->dev_opaque, load);
     }
 }
 
@@ -1535,7 +1535,7 @@ int bdrv_set_key(BlockDriverState *bs, const char *key)
     } else if (!bs->valid_key) {
         bs->valid_key = 1;
         /* call the change callback now, we skipped it on open */
-        bdrv_dev_change_media_cb(bs);
+        bdrv_dev_change_media_cb(bs, 1);
     }
     return ret;
 }
diff --git a/block.h b/block.h
index be5ed0a..c99de24 100644
--- a/block.h
+++ b/block.h
@@ -31,11 +31,12 @@ typedef struct QEMUSnapshotInfo {
 typedef struct BlockDevOps {
     /*
      * Runs when virtual media changed (monitor commands eject, change)
+     * Argument load is true on load and false on eject.
      * Beware: doesn't run when a host device's physical media
      * changes.  Sure would be useful if it did.
      * Device models with removable media must implement this callback.
      */
-    void (*change_media_cb)(void *opaque);
+    void (*change_media_cb)(void *opaque, bool load);
     /*
      * Is medium ejected from the device?
      * Device models calling bdrv_eject() should implement this.
diff --git a/hw/fdc.c b/hw/fdc.c
index e8da6a9..1f084ce 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -1777,7 +1777,7 @@ static void fdctrl_result_timer(void *opaque)
     fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
 }
 
-static void fdctrl_change_cb(void *opaque)
+static void fdctrl_change_cb(void *opaque, bool load)
 {
     FDrive *drive = opaque;
 
diff --git a/hw/ide/core.c b/hw/ide/core.c
index cac3518..05ed7e9 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -758,7 +758,7 @@ static void ide_cfata_metadata_write(IDEState *s)
 }
 
 /* called when the inserted state of the media has changed */
-static void ide_cd_change_cb(void *opaque)
+static void ide_cd_change_cb(void *opaque, bool load)
 {
     IDEState *s = opaque;
     uint64_t nb_sectors;
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 1bfdfdd..4f28e9c 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -1276,7 +1276,7 @@ static void scsi_destroy(SCSIDevice *dev)
     blockdev_mark_auto_del(s->qdev.conf.bs);
 }
 
-static void scsi_cd_change_media_cb(void *opaque)
+static void scsi_cd_change_media_cb(void *opaque, bool load)
 {
 }
 
diff --git a/hw/sd.c b/hw/sd.c
index fdd87b0..31b83de 100644
--- a/hw/sd.c
+++ b/hw/sd.c
@@ -421,7 +421,7 @@ static void sd_reset(SDState *sd, BlockDriverState *bdrv)
     sd->pwd_len = 0;
 }
 
-static void sd_cardchange(void *opaque)
+static void sd_cardchange(void *opaque, bool load)
 {
     SDState *sd = opaque;
 
-- 
1.7.2.3