From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:55126) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R0xiG-0002Gw-Ee for qemu-devel@nongnu.org; Tue, 06 Sep 2011 11:37:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R0xiA-0003p0-Ed for qemu-devel@nongnu.org; Tue, 06 Sep 2011 11:37:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37919) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R0xiA-0003ok-5v for qemu-devel@nongnu.org; Tue, 06 Sep 2011 11:37:18 -0400 From: Kevin Wolf Date: Tue, 6 Sep 2011 17:39:37 +0200 Message-Id: <1315323586-23840-23-git-send-email-kwolf@redhat.com> In-Reply-To: <1315323586-23840-1-git-send-email-kwolf@redhat.com> References: <1315323586-23840-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH 22/31] VMDK: Opening compressed extent. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: anthony@codemonkey.ws Cc: kwolf@redhat.com, qemu-devel@nongnu.org From: Fam Zheng Added flags field for compressed/streamOptimized extents, open and save image configuration. Signed-off-by: Fam Zheng Reviewed-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- block/vmdk.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/block/vmdk.c b/block/vmdk.c index 106fdbd..8a96cfd 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -26,9 +26,13 @@ #include "qemu-common.h" #include "block_int.h" #include "module.h" +#include "zlib.h" #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') +#define VMDK4_COMPRESSION_DEFLATE 1 +#define VMDK4_FLAG_COMPRESS (1 << 16) +#define VMDK4_FLAG_MARKER (1 << 17) typedef struct { uint32_t version; @@ -56,6 +60,7 @@ typedef struct { int64_t grain_offset; char filler[1]; char check_bytes[4]; + uint16_t compressAlgorithm; } QEMU_PACKED VMDK4Header; #define L2_CACHE_SIZE 16 @@ -63,6 +68,8 @@ typedef struct { typedef struct VmdkExtent { BlockDriverState *file; bool flat; + bool compressed; + bool has_marker; int64_t sectors; int64_t end_sector; int64_t flat_start_offset; @@ -98,6 +105,12 @@ typedef struct VmdkMetaData { int valid; } VmdkMetaData; +typedef struct VmdkGrainMarker { + uint64_t lba; + uint32_t size; + uint8_t data[0]; +} VmdkGrainMarker; + static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) { uint32_t magic; @@ -423,6 +436,9 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, l1_size, le32_to_cpu(header.num_gtes_per_gte), le64_to_cpu(header.granularity)); + extent->compressed = + le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; + extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; ret = vmdk_init_tables(bs, extent); if (ret) { /* free extent allocated by vmdk_add_extent */ -- 1.7.6