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vmdk: do not try opening a file as both image and descriptor 

This prepares for propagating errors from vmdk_open_sparse and
vmdk_open_desc_file up to the caller of vmdk_open.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-02-17 14:44:04 +01:00 committed by Kevin Wolf
parent d1833ef52b
commit 37f09e5e3d
2 changed files with 17 additions and 9 deletions
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22
block/vmdk.c
View File

@ -886,20 +886,28 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags,
char *buf = NULL;
int ret;
BDRVVmdkState *s = bs->opaque;
uint32_t magic;
buf = vmdk_read_desc(bs->file, 0, errp);
if (!buf) {
return -EINVAL;
}
if (vmdk_open_sparse(bs, bs->file, flags, buf, errp) == 0) {
s->desc_offset = 0x200;
} else {
ret = vmdk_open_desc_file(bs, flags, buf, errp);
if (ret) {
goto fail;
}
magic = ldl_be_p(buf);
switch (magic) {
case VMDK3_MAGIC:
case VMDK4_MAGIC:
ret = vmdk_open_sparse(bs, bs->file, flags, buf, errp);
s->desc_offset = 0x200;
break;
default:
ret = vmdk_open_desc_file(bs, flags, buf, errp);
break;
}
if (ret) {
goto fail;
}
/* try to open parent images, if exist */
ret = vmdk_parent_open(bs);
if (ret) {

4
tests/qemu-iotests/059.out
View File

@ -8,7 +8,7 @@ no file open, try 'help open'
=== Testing too big L2 table size ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
L2 table size too big
qemu-io: can't open device TEST_DIR/t.vmdk: Could not open 'TEST_DIR/t.vmdk': Wrong medium type
qemu-io: can't open device TEST_DIR/t.vmdk: Could not open 'TEST_DIR/t.vmdk': Invalid argument
no file open, try 'help open'
=== Testing too big L1 table size ===
@ -2046,7 +2046,7 @@ RW 12582912 VMFS "dummy.IMGFMT" 1
=== Testing truncated sparse ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=107374182400
qemu-img: File truncated, expecting at least 13172736 bytes
qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Could not open 'TEST_DIR/t.IMGFMT': Wrong medium type
qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Could not open 'TEST_DIR/t.IMGFMT': Invalid argument
=== Testing version 3 ===
image: TEST_DIR/iotest-version3.IMGFMT