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From 2139ef7f75ff63904fac6b451c8a89e4b0c72448 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Wed, 26 Oct 2011 12:25:25 +0200
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Subject: [PATCH] vmdk: Improve error handling
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Return the right error values in some more places.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 99f1835d9bc744f98370254600530e66f32e6d81)
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Signed-off-by: Bruce Rogers <brogers@suse.com>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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---
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block/vmdk.c | 21 +++++++++++++++------
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1 file changed, 15 insertions(+), 6 deletions(-)
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diff --git a/block/vmdk.c b/block/vmdk.c
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index b5caa40..8284747 100644
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--- a/block/vmdk.c
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+++ b/block/vmdk.c
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@@ -181,8 +181,10 @@ static uint32_t vmdk_read_cid(BlockDriverState *bs, int parent)
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const char *p_name, *cid_str;
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size_t cid_str_size;
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BDRVVmdkState *s = bs->opaque;
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+ int ret;
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- if (bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE) != DESC_SIZE) {
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+ ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE);
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+ if (ret < 0) {
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return 0;
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}
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@@ -208,10 +210,12 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
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char desc[DESC_SIZE], tmp_desc[DESC_SIZE];
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char *p_name, *tmp_str;
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BDRVVmdkState *s = bs->opaque;
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+ int ret;
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memset(desc, 0, sizeof(desc));
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- if (bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE) != DESC_SIZE) {
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- return -EIO;
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+ ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE);
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+ if (ret < 0) {
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+ return ret;
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}
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tmp_str = strstr(desc, "parentCID");
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@@ -223,9 +227,11 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
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pstrcat(desc, sizeof(desc), tmp_desc);
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}
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- if (bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE) < 0) {
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- return -EIO;
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+ ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE);
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+ if (ret < 0) {
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+ return ret;
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}
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+
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return 0;
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}
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@@ -906,7 +912,10 @@ static int vmdk_write(BlockDriverState *bs, int64_t sector_num,
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/* update CID on the first write every time the virtual disk is
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* opened */
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if (!s->cid_updated) {
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- vmdk_write_cid(bs, time(NULL));
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+ ret = vmdk_write_cid(bs, time(NULL));
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+ if (ret < 0) {
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+ return ret;
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+ }
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s->cid_updated = true;
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}
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}
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--
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1.7.11.2
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