block: Make bdrv_is_inserted() return a bool

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

Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

3 files changed, 5 insertions, 7 deletions

diff --git a/block/block-backend.c b/block/block-backend.c
index 2256551..1db002c 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -769,7 +769,7 @@ 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 2e3db44..918c756 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -2398,15 +2398,13 @@ 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)
@@ -2532,7 +2530,7 @@ 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 63ee911..3c7b413 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->bs, offset);
 }
 
-static int raw_is_inserted(BlockDriverState *bs)
+static bool raw_is_inserted(BlockDriverState *bs)
 {
     return bdrv_is_inserted(bs->file->bs);
 }