[Qemu-devel] [PATCH v4 04/38] block: Make bdrv_is_inserted() return a bool

[Max Reitz]

Make bdrv_is_inserted(), blk_is_inserted(), and the callback
BlockDriver.bdrv_is_inserted() return a bool.

Suggested-by: Eric Blake <ebl...@redhat.com>
Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
Reviewed-by: Alberto Garcia <be...@igalia.com>
---
 block.c                        | 12 +++++++-----
 block/block-backend.c          |  2 +-
 block/raw-posix.c              |  8 +++-----
 block/raw_bsd.c                |  2 +-
 include/block/block.h          |  2 +-
 include/block/block_int.h      |  2 +-
 include/sysemu/block-backend.h |  2 +-
 7 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/block.c b/block.c
index d088ee0..494e08e 100644
--- a/block.c
+++ b/block.c
@@ -3228,14 +3228,16 @@ void bdrv_invalidate_cache_all(Error **errp)
 /**
  * Return TRUE if the media is present
  */
-int bdrv_is_inserted(BlockDriverState *bs)
+bool bdrv_is_inserted(BlockDriverState *bs)
 {
     BlockDriver *drv = bs->drv;
 
-    if (!drv)
-        return 0;
-    if (!drv->bdrv_is_inserted)
-        return 1;
+    if (!drv) {
+        return false;
+    }
+    if (!drv->bdrv_is_inserted) {
+        return true;
+    }
     return drv->bdrv_is_inserted(bs);
 }
 
diff --git a/block/block-backend.c b/block/block-backend.c
index aee8a12..7afd5c0 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -752,7 +752,7 @@ void blk_invalidate_cache(BlockBackend *blk, Error **errp)
     bdrv_invalidate_cache(blk->bs, errp);
 }
 
-int blk_is_inserted(BlockBackend *blk)
+bool blk_is_inserted(BlockBackend *blk)
 {
     return bdrv_is_inserted(blk->bs);
 }
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 83d7054..bf5d780 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -2386,15 +2386,13 @@ out:
     return prio;
 }
 
-static int cdrom_is_inserted(BlockDriverState *bs)
+static bool cdrom_is_inserted(BlockDriverState *bs)
 {
     BDRVRawState *s = bs->opaque;
     int ret;
 
     ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
-    if (ret == CDS_DISC_OK)
-        return 1;
-    return 0;
+    return ret == CDS_DISC_OK;
 }
 
 static void cdrom_eject(BlockDriverState *bs, bool eject_flag)
@@ -2520,7 +2518,7 @@ static int cdrom_reopen(BlockDriverState *bs)
     return 0;
 }
 
-static int cdrom_is_inserted(BlockDriverState *bs)
+static bool cdrom_is_inserted(BlockDriverState *bs)
 {
     return raw_getlength(bs) > 0;
 }
diff --git a/block/raw_bsd.c b/block/raw_bsd.c
index e3d2d04..d718583 100644
--- a/block/raw_bsd.c
+++ b/block/raw_bsd.c
@@ -154,7 +154,7 @@ static int raw_truncate(BlockDriverState *bs, int64_t 
offset)
     return bdrv_truncate(bs->file, offset);
 }
 
-static int raw_is_inserted(BlockDriverState *bs)
+static bool raw_is_inserted(BlockDriverState *bs)
 {
     return bdrv_is_inserted(bs->file);
 }
diff --git a/include/block/block.h b/include/block/block.h
index 37916f7..2eee6c5 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -397,7 +397,7 @@ int bdrv_is_read_only(BlockDriverState *bs);
 int bdrv_is_sg(BlockDriverState *bs);
 int bdrv_enable_write_cache(BlockDriverState *bs);
 void bdrv_set_enable_write_cache(BlockDriverState *bs, bool wce);
-int bdrv_is_inserted(BlockDriverState *bs);
+bool bdrv_is_inserted(BlockDriverState *bs);
 int bdrv_media_changed(BlockDriverState *bs);
 void bdrv_lock_medium(BlockDriverState *bs, bool locked);
 void bdrv_eject(BlockDriverState *bs, bool eject_flag);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 14ad4c3..f3b3354 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -213,7 +213,7 @@ struct BlockDriver {
         const char *backing_file, const char *backing_fmt);
 
     /* removable device specific */
-    int (*bdrv_is_inserted)(BlockDriverState *bs);
+    bool (*bdrv_is_inserted)(BlockDriverState *bs);
     int (*bdrv_media_changed)(BlockDriverState *bs);
     void (*bdrv_eject)(BlockDriverState *bs, bool eject_flag);
     void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked);
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 8fc960f..8f2bf10 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -130,7 +130,7 @@ int blk_is_sg(BlockBackend *blk);
 int blk_enable_write_cache(BlockBackend *blk);
 void blk_set_enable_write_cache(BlockBackend *blk, bool wce);
 void blk_invalidate_cache(BlockBackend *blk, Error **errp);
-int blk_is_inserted(BlockBackend *blk);
+bool blk_is_inserted(BlockBackend *blk);
 void blk_lock_medium(BlockBackend *blk, bool locked);
 void blk_eject(BlockBackend *blk, bool eject_flag);
 int blk_get_flags(BlockBackend *blk);
-- 
2.4.6