From 71968dbfd8d190321ae54caf2ddfdf012ee97b3c Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Tue, 8 Mar 2016 16:24:36 +0800 Subject: [PATCH] vmdk: Switch to heap arrays for vmdk_parent_open Signed-off-by: Fam Zheng Reviewed-by: Paolo Bonzini Signed-off-by: Kevin Wolf --- block/vmdk.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/block/vmdk.c b/block/vmdk.c index c68f4563ad..03be7f0f5f 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -343,15 +343,16 @@ static int vmdk_reopen_prepare(BDRVReopenState *state, static int vmdk_parent_open(BlockDriverState *bs) { char *p_name; - char desc[DESC_SIZE + 1]; + char *desc; BDRVVmdkState *s = bs->opaque; int ret; - desc[DESC_SIZE] = '\0'; + desc = g_malloc0(DESC_SIZE + 1); ret = bdrv_pread(bs->file->bs, s->desc_offset, desc, DESC_SIZE); if (ret < 0) { - return ret; + goto out; } + ret = 0; p_name = strstr(desc, "parentFileNameHint"); if (p_name != NULL) { @@ -360,16 +361,20 @@ static int vmdk_parent_open(BlockDriverState *bs) p_name += sizeof("parentFileNameHint") + 1; end_name = strchr(p_name, '\"'); if (end_name == NULL) { - return -EINVAL; + ret = -EINVAL; + goto out; } if ((end_name - p_name) > sizeof(bs->backing_file) - 1) { - return -EINVAL; + ret = -EINVAL; + goto out; } pstrcpy(bs->backing_file, end_name - p_name + 1, p_name); } - return 0; +out: + g_free(desc); + return ret; } /* Create and append extent to the extent array. Return the added VmdkExtent -- GitLab