haraldwolff/qemu-patch-raspberry4
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Eric Blake 56439e9d55 qcow: Change signature of get_cluster_offset() 
The old signature has an ambiguous meaning for a return of 0:
either no allocation was requested or necessary, or an error
occurred (but any errno associated with the error is lost to
the caller, which then has to assume EIO).

Better is to follow the example of qcow2, by changing the
signature to have a separate return value that cleanly
distinguishes between failure and success, along with a
parameter that cleanly holds a 64-bit value.  Then update all
callers.

While auditing that all return paths return a negative errno
(rather than -1), I also simplified places where we can pass
NULL rather than a local Error that just gets thrown away.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-09-04 18:33:00 +02:00
..
accounting.c block: make accounting thread-safe 2017-06-16 07:55:00 +08:00
backup.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
blkdebug.c block: add default implementations for bdrv_co_get_block_status() 2017-09-04 18:31:13 +02:00
blkreplay.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
blkverify.c blkverify: Catch bs->exact_filename overflow 2017-06-26 14:54:46 +02:00
block-backend.c block-backend: Allow more "can inactivate" cases 2017-08-23 10:21:55 -05:00
bochs.c block: do not set BDS read_only if copy_on_read enabled 2017-04-24 15:09:33 -04:00
cloop.c block: do not set BDS read_only if copy_on_read enabled 2017-04-24 15:09:33 -04:00
commit.c block: add default implementations for bdrv_co_get_block_status() 2017-09-04 18:31:13 +02:00
crypto.c block: Add PreallocMode to bdrv_truncate() 2017-07-11 17:45:01 +02:00
crypto.h qcow: convert QCow to use QCryptoBlock for encryption 2017-07-11 17:44:56 +02:00
curl.c curl: do not do aio_poll when waiting for a free CURLState 2017-05-16 10:34:50 -04:00
dirty-bitmap.c dirty-bitmap: Report BlockDirtyInfo.count in bytes, as documented 2017-07-24 15:06:04 +02:00
dmg-bz2.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.c dmg: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
dmg.h dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
file-posix.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
file-win32.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
gluster.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
io.c block: add default implementations for bdrv_co_get_block_status() 2017-09-04 18:31:13 +02:00
iscsi-opts.c block/iscsi: statically link qemu_iscsi_opts 2017-01-27 18:07:58 +01:00
iscsi.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
Makefile.objs qcow2: add bitmaps extension 2017-07-11 17:44:57 +02:00
mirror.c block: add default implementations for bdrv_co_get_block_status() 2017-09-04 18:31:13 +02:00
nbd-client.c block/nbd-client: refactor request send/receive 2017-08-30 13:00:38 -05:00
nbd-client.h nbd-client: avoid spurious qio_channel_yield() re-entry 2017-08-23 11:22:15 -05:00
nbd.c nbd: Implement NBD_INFO_BLOCK_SIZE on client 2017-07-14 12:04:42 +02:00
nfs.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
null.c block/null: Remove 'filename' option 2017-08-08 15:19:16 +02:00
parallels.c qapi: drop the sentinel in enum array 2017-09-04 13:09:13 +02:00
qapi.c block/qapi: Remove redundant NULL check to silence Coverity 2017-08-01 18:09:33 +02:00
qcow.c qcow: Change signature of get_cluster_offset() 2017-09-04 18:33:00 +02:00
qcow2-bitmap.c qcow2-bitmap: fix bitmap_free 2017-07-25 16:33:31 +02:00
qcow2-cache.c qcow2: Remove stale comment 2016-11-25 13:51:30 +01:00
qcow2-cluster.c -----BEGIN PGP SIGNATURE----- 2017-08-31 15:52:43 +01:00
qcow2-refcount.c qcow2: fix null pointer dereference 2017-07-31 13:06:38 +03:00
qcow2-snapshot.c qcow2: Discard/zero clusters by byte count 2017-05-11 14:28:07 +02:00
qcow2.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
qcow2.h block/qcow2: falloc/full preallocating growth 2017-07-11 17:45:02 +02:00
qed-check.c qed: Use DIV_ROUND_UP 2016-06-07 18:19:24 +03:00
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 qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
qed.h qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
quorum.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
raw-format.c block: remove unused bdrv_media_changed 2017-09-04 18:31:13 +02:00
rbd.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
replication.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
sheepdog.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
snapshot.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
ssh.c ssh: support I/O from any AioContext 2017-07-17 11:34:20 +08:00
stream.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
throttle-groups.c block: remove timer canceling in throttle_config() 2017-07-18 15:14:35 +02:00
trace-events block: move trace probes into bdrv_co_preadv|pwritev 2017-08-07 09:39:35 +01:00
vdi.c vdi: make it thread-safe 2017-07-17 11:28:15 +08:00
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/vhdx: check for offset overflow to bdrv_truncate() 2017-08-08 14:37:00 +02:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c vmdk: Fix error handling/reporting of vmdk_check 2017-08-08 15:19:16 +02:00
vpc.c vpc: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
vvfat.c vvfat: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
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 block: use bdrv_add_before_write_notifier 2016-10-07 13:34:07 +02:00