From 9ebd84480583bb6d9a7666c079d99ff3266c423d Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Wed, 22 Oct 2014 14:09:27 +0200 Subject: block: Add qemu_{,try_}blockalign0() These functions call their non-0-counterparts and then fill the allocated buffer with 0 (if the allocation has been successful). Signed-off-by: Max Reitz Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'block.c') diff --git a/block.c b/block.c index 773e87ef08..bbb04e7b95 100644 --- a/block.c +++ b/block.c @@ -5200,6 +5200,11 @@ void *qemu_blockalign(BlockDriverState *bs, size_t size) return qemu_memalign(bdrv_opt_mem_align(bs), size); } +void *qemu_blockalign0(BlockDriverState *bs, size_t size) +{ + return memset(qemu_blockalign(bs, size), 0, size); +} + void *qemu_try_blockalign(BlockDriverState *bs, size_t size) { size_t align = bdrv_opt_mem_align(bs); @@ -5213,6 +5218,17 @@ void *qemu_try_blockalign(BlockDriverState *bs, size_t size) return qemu_try_memalign(align, size); } +void *qemu_try_blockalign0(BlockDriverState *bs, size_t size) +{ + void *mem = qemu_try_blockalign(bs, size); + + if (mem) { + memset(mem, 0, size); + } + + return mem; +} + /* * Check if all memory in this vector is sector aligned. */ -- cgit v1.2.1