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[Qemu-devel] [PATCH v2 12/22] block: Add blk_next_inserted()
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH v2 12/22] block: Add blk_next_inserted() |
Date: |
Mon, 9 Feb 2015 13:38:34 -0500 |
This function skips to the next BlockBackend for which blk_is_inserted()
is true.
Signed-off-by: Max Reitz <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
block/block-backend.c | 15 +++++++++++++++
include/sysemu/block-backend.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index c54792d..5505bb8 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -235,6 +235,21 @@ BlockBackend *blk_next(BlockBackend *blk)
}
/*
+ * Like blk_next(), but skips all non-inserted BlockBackends (that is,
+ * BlockBackends for which blk_is_inserted() returns false)
+ */
+BlockBackend *blk_next_inserted(BlockBackend *blk)
+{
+ while ((blk = blk_next(blk)) != NULL) {
+ if (blk_is_inserted(blk)) {
+ break;
+ }
+ }
+
+ return blk;
+}
+
+/*
* Return @blk's name, a non-null string.
* Wart: the name is empty iff @blk has been hidden with
* blk_hide_on_behalf_of_do_drive_del().
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 3790c9b..1772db7 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -74,6 +74,7 @@ const char *blk_name(BlockBackend *blk);
BlockBackend *blk_by_name(const char *name);
bool blk_name_taken(const char *name);
BlockBackend *blk_next(BlockBackend *blk);
+BlockBackend *blk_next_inserted(BlockBackend *blk);
BlockDriverState *blk_bs(BlockBackend *blk);
void blk_remove_bs(BlockBackend *blk);
--
2.1.0
- [Qemu-devel] [PATCH v2 08/22] block: Use blk_remove_bs() in blk_delete(), (continued)
- [Qemu-devel] [PATCH v2 08/22] block: Use blk_remove_bs() in blk_delete(), Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 03/22] iotests: Add test for eject under NBD server, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 02/22] iotests: Do not redirect qemu's stderr, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 09/22] blockdev: Use blk_remove_bs() in do_drive_del(), Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 04/22] quorum: Fix close path, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 10/22] block: Make bdrv_close() static, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 07/22] block: Add bdrv_close_all() handlers, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 06/22] block: Add bdrv_close_all() notifiers, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 11/22] block: Add blk_name_taken(), Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 14/22] block: Use BlockBackend more, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 12/22] block: Add blk_next_inserted(),
Max Reitz <=
- [Qemu-devel] [PATCH v2 13/22] block: Add blk_commit_all() and blk_invalidate_cache_all(), Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 17/22] block: Make bdrv_drain_one() public, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 15/22] blockdev: Add list of monitor-owned BlockBackends, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 18/22] block: Move some bdrv_*_all() functions to BB, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 19/22] block: Remove bdrv_states, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 20/22] blockdev: Keep track of monitor-owned BDS, Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 16/22] blockdev: Remove blk_hide_on_behalf_of_do_drive_del(), Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 21/22] block: Strip down bdrv_close_all(), Max Reitz, 2015/02/09
- [Qemu-devel] [PATCH v2 22/22] iotests: Add test for multiple BB on BDS tree, Max Reitz, 2015/02/09
- Re: [Qemu-devel] [PATCH v2 00/22] block: Rework bdrv_close_all(), Paolo Bonzini, 2015/02/10