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| author |   Kevin Wolf <kwolf@redhat.com> | 2010-01-20 15:02:58 +0100 |
|---|---|---|
| committer |   Anthony Liguori <aliguori@us.ibm.com> | 2010-01-27 07:51:02 -0600 |
| commit | cb2ae96bf6bfb50d5002578d14da6d84ebc5ecb2 (patch) | |
| tree | d885cea11f33a5c7b96636b89628fa693f021390 /block/qcow2-cluster.c | |
| parent | win32/sdl: Fix toggle full screen (diff) | |
| download | qemu-kvm-cb2ae96bf6bfb50d5002578d14da6d84ebc5ecb2.tar.gz qemu-kvm-cb2ae96bf6bfb50d5002578d14da6d84ebc5ecb2.tar.bz2 qemu-kvm-cb2ae96bf6bfb50d5002578d14da6d84ebc5ecb2.zip | |
qcow2: Fix error handling in qcow2_grow_l1_table
Return the appropriate error value instead of always using EIO. Don't free the
L1 table on errors, we still need it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit fb8fa77ce143b0911658b4bcbe641c869e26ceee)
Diffstat (limited to 'block/qcow2-cluster.c')
| -rw-r--r-- | block/qcow2-cluster.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index f88118cdc..cb46376ab 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -67,9 +67,10 @@ int qcow2_grow_l1_table(BlockDriverState *bs, int min_size) /* set new table */ cpu_to_be32w((uint32_t*)data, new_l1_size); cpu_to_be64w((uint64_t*)(data + 4), new_l1_table_offset); - if (bdrv_pwrite(s->hd, offsetof(QCowHeader, l1_size), data, - sizeof(data)) != sizeof(data)) + ret = bdrv_pwrite(s->hd, offsetof(QCowHeader, l1_size), data,sizeof(data)); + if (ret != sizeof(data)) { goto fail; + } qemu_free(s->l1_table); qcow2_free_clusters(bs, s->l1_table_offset, s->l1_size * sizeof(uint64_t)); s->l1_table_offset = new_l1_table_offset; @@ -77,8 +78,9 @@ int qcow2_grow_l1_table(BlockDriverState *bs, int min_size) s->l1_size = new_l1_size; return 0; fail: - qemu_free(s->l1_table); - return -EIO; + qemu_free(new_l1_table); + qcow2_free_clusters(bs, new_l1_table_offset, new_l1_size2); + return ret < 0 ? ret : -EIO; } void qcow2_l2_cache_reset(BlockDriverState *bs) |