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db5794f1f1
qemu/block
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Alberto Garcia db5794f1f1 qcow2: Check snapshot L1 table in qcow2_snapshot_delete() 
This function deletes a snapshot from disk, removing its entry from
the snapshot table, freeing its L1 table and decreasing the refcounts
of all clusters.

The L1 table offset and size are however not validated. If we use
invalid values in this function we'll probably corrupt the image even
more, so we should return an error instead.

We now have a function to take care of this, so let's use it.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-09 15:17:47 +01:00
..
accounting.c block: make accounting thread-safe 2017-06-16 07:55:00 +08:00
backup.c backup: use copy_bitmap in incremental backup 2017-12-18 10:54:13 -05:00
blkdebug.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
blkreplay.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
blkverify.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
block-backend.c Block layer patches 2018-03-06 11:20:44 +00:00
bochs.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
cloop.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
commit.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
crypto.c block: implement the bdrv_reopen_prepare helper for LUKS driver 2018-03-09 15:17:47 +01:00
crypto.h qcow: convert QCow to use QCryptoBlock for encryption 2017-07-11 17:44:56 +02:00
curl.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
dirty-bitmap.c block: maintain persistent disabled bitmaps 2018-02-13 16:59:58 +01:00
dmg-bz2.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
dmg.h block: remove "qemu/osdep.h" from header file 2017-12-18 17:07:02 +03:00
file-posix.c block: rename .bdrv_create() to .bdrv_co_create_opts() 2018-03-02 18:39:07 +01:00
file-win32.c block: rename .bdrv_create() to .bdrv_co_create_opts() 2018-03-02 18:39:07 +01:00
gluster.c block: rename .bdrv_create() to .bdrv_co_create_opts() 2018-03-02 18:39:07 +01:00
io.c block: extract AIO_WAIT_WHILE() from BlockDriverState 2018-03-02 18:39:07 +01:00
iscsi-opts.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
iscsi.c block: convert bdrv_invalidate_cache callback to coroutine_fn 2018-03-09 15:17:47 +01:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
Makefile.objs block: Add VFIO based NVMe driver 2018-02-08 09:22:03 +08:00
mirror.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
nbd-client.c nbd: Honor server's advertised minimum block size 2018-03-01 14:02:32 -06:00
nbd-client.h nbd: Minimal structured read for client 2017-10-30 21:48:41 +01:00
nbd.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00
nfs.c block: convert bdrv_invalidate_cache callback to coroutine_fn 2018-03-09 15:17:47 +01:00
null.c null: Switch to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
nvme.c nvme: Drop pointless .bdrv_co_get_block_status() 2018-03-02 18:39:07 +01:00
parallels.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
parallels.h Clean up includes 2018-02-09 05:05:11 +01:00
qapi.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00
qcow2-bitmap.c qcow2: fix flushing after dirty bitmap metadata writes 2018-03-09 15:17:47 +01:00
qcow2-cache.c qcow2: Allow configuring the L2 slice size 2018-02-13 17:00:00 +01:00
qcow2-cluster.c qcow2: Check L1 table parameters in qcow2_expand_zero_clusters() 2018-03-09 15:17:47 +01:00
qcow2-refcount.c qcow2: Check snapshot L1 tables in qcow2_check_metadata_overlap() 2018-03-09 15:17:47 +01:00
qcow2-snapshot.c qcow2: Check snapshot L1 table in qcow2_snapshot_delete() 2018-03-09 15:17:47 +01:00
qcow2.c qcow2: Generalize validate_table_offset() into qcow2_validate_table() 2018-03-09 15:17:47 +01:00
qcow2.h qcow2: Generalize validate_table_offset() into qcow2_validate_table() 2018-03-09 15:17:47 +01:00
qcow.c block: rename .bdrv_create() to .bdrv_co_create_opts() 2018-03-02 18:39:07 +01:00
qed-check.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
qed-cluster.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-l2-cache.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-table.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
qed.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
qed.h qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
quorum.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00
raw-format.c block: rename .bdrv_create() to .bdrv_co_create_opts() 2018-03-02 18:39:07 +01:00
rbd.c block: convert bdrv_invalidate_cache callback to coroutine_fn 2018-03-09 15:17:47 +01:00
replication.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
sheepdog.c Block layer patches 2018-03-06 11:20:44 +00:00
snapshot.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
ssh.c Block layer patches 2018-03-06 11:20:44 +00:00
stream.c blockjob: remove clock argument from block_job_sleep_ns 2017-11-29 15:11:02 +01:00
throttle-groups.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00
throttle.c block: Switch passthrough drivers to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
trace-events block: Add VFIO based NVMe driver 2018-02-08 09:22:03 +08:00
vdi.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
vhdx-endian.c vhdx: Use QEMU UUID API 2016-09-23 11:42:52 +08:00
vhdx-log.c vhdx: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
vhdx.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
vpc.c block: rename .bdrv_create() to .bdrv_co_create_opts() 2018-03-02 18:39:07 +01:00
vvfat.c vvfat: Switch to .bdrv_co_block_status() 2018-03-02 18:39:07 +01:00
vxhs.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
win32-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
write-threshold.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00