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Fam Zheng 2b218f5dbc file-posix: Do runtime check for ofd lock API 
It is reported that on Windows Subsystem for Linux, ofd operations fail
with -EINVAL. In other words, QEMU binary built with system headers that
exports F_OFD_SETLK doesn't necessarily run in an environment that
actually supports it:

$ qemu-system-aarch64 ... -drive file=test.vhdx,if=none,id=hd0 \
    -device virtio-blk-pci,drive=hd0
qemu-system-aarch64: -drive file=test.vhdx,if=none,id=hd0: Failed to unlock byte 100
qemu-system-aarch64: -drive file=test.vhdx,if=none,id=hd0: Failed to unlock byte 100
qemu-system-aarch64: -drive file=test.vhdx,if=none,id=hd0: Failed to lock byte 100

As a matter of fact this is not WSL specific. It can happen when running
a QEMU compiled against a newer glibc on an older kernel, such as in
a containerized environment.

Let's do a runtime check to cope with that.

Reported-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
 		2017-08-11 14:12:44 +02:00
..
Makefile.objs qcow2: add bitmaps extension 2017-07-11 17:44:57 +02:00
accounting.c block: make accounting thread-safe 2017-06-16 07:55:00 +08:00
backup.c Convert error_report() to warn_report() 2017-07-13 13:49:58 +02:00
blkdebug.c block: Add PreallocMode to bdrv_truncate() 2017-07-11 17:45:01 +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: Make blk_all_next() public 2017-07-18 15:14:36 +02:00
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: Skip implicit nodes in query-block/blockstats 2017-07-24 15:06:04 +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 block: do not set BDS read_only if copy_on_read enabled 2017-04-24 15:09:33 -04:00
dmg.h dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
file-posix.c file-posix: Do runtime check for ofd lock API 2017-08-11 14:12:44 +02:00
file-win32.c block: Add PreallocMode to BD.bdrv_truncate() 2017-07-11 17:45:01 +02:00
gluster.c Error reporting patches for 2017-07-13 2017-07-14 09:36:40 +01:00
io.c block: move trace probes into bdrv_co_preadv|pwritev 2017-08-07 09:39:35 +01:00
iscsi-opts.c block/iscsi: statically link qemu_iscsi_opts 2017-01-27 18:07:58 +01:00
iscsi.c Error reporting patches for 2017-07-13 2017-07-14 09:36:40 +01:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
mirror.c block: Skip implicit nodes in query-block/blockstats 2017-07-24 15:06:04 +02:00
nbd-client.c nbd: Implement NBD_INFO_BLOCK_SIZE on client 2017-07-14 12:04:42 +02:00
nbd-client.h nbd: Create struct for tracking export info 2017-07-14 12:04:41 +02:00
nbd.c nbd: Implement NBD_INFO_BLOCK_SIZE on client 2017-07-14 12:04:42 +02:00
nfs.c block/nfs: fix mutex assertion in nfs_file_close() 2017-08-08 15:19:16 +02:00
null.c block/null: Remove 'filename' option 2017-08-08 15:19:16 +02:00
parallels.c parallels: drop check that bdrv_truncate() is working 2017-08-08 15:19:16 +02:00
qapi.c block/qapi: Remove redundant NULL check to silence Coverity 2017-08-01 18:09:33 +02:00
qcow.c qcow: fix memory leaks related to encryption 2017-07-25 16:33:31 +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 qcow2: add support for LUKS encryption format 2017-07-11 17:44:56 +02:00
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 qcow2: Check failure of bdrv_getlength() 2017-08-11 13:23:47 +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 qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed.h qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
quorum.c quorum: Set sectors-count to 0 when reporting a flush error 2017-08-08 14:37:00 +02:00
raw-format.c block: Add PreallocMode to bdrv_truncate() 2017-07-11 17:45:01 +02:00
rbd.c Error reporting patches for 2017-07-13 2017-07-14 09:36:40 +01:00
replication.c block: Make bdrv_is_allocated_above() byte-based 2017-07-10 13:18:07 +02:00
sheepdog.c sheepdog: add queue_lock 2017-07-17 11:34:20 +08:00
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 block/vhdx: check error return of bdrv_truncate() 2017-08-08 14:37:00 +02:00
vhdx.c block/vhdx: check for offset overflow to bdrv_truncate() 2017-08-08 14:37:00 +02:00
vhdx.h
…
vmdk.c vmdk: Fix error handling/reporting of vmdk_check 2017-08-08 15:19:16 +02:00
vpc.c vpc: Check failure of bdrv_getlength() 2017-08-11 13:23:40 +02:00
vvfat.c block/vvfat: Fix compiler warning with gcc 7 2017-07-18 15:14:36 +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