qemu/tools/virtiofsd
Misono Tomohiro 8e4e41e39e virtiofsd: Fix data corruption with O_APPEND write in writeback mode
When writeback mode is enabled (-o writeback), O_APPEND handling is
done in kernel. Therefore virtiofsd clears O_APPEND flag when open.
Otherwise O_APPEND flag takes precedence over pwrite() and write
data may corrupt.

Currently clearing O_APPEND flag is done in lo_open(), but we also
need the same operation in lo_create(). So, factor out the flag
update operation in lo_open() to update_open_flags() and call it
in both lo_open() and lo_create().

This fixes the failure of xfstest generic/069 in writeback mode
(which tests O_APPEND write data integrity).

Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23 16:41:37 +00:00
..
50-qemu-virtiofsd.json.in virtiofsd: add vhost-user.json file 2020-01-23 16:41:36 +00:00
buffer.c virtiofsd: add fuse_mbuf_iter API 2020-01-23 16:41:36 +00:00
fuse_common.h virtiofsd: Parse flag FUSE_WRITE_KILL_PRIV 2020-01-23 16:41:37 +00:00
fuse_i.h virtiofsd: Plumb fuse_bufvec through to do_write_buf 2020-01-23 16:41:36 +00:00
fuse_log.c virtiofsd: Fix common header and define for QEMU builds 2020-01-23 16:41:36 +00:00
fuse_log.h virtiofsd: Format imported files to qemu style 2020-01-23 16:41:36 +00:00
fuse_lowlevel.c virtiofsd: use fuse_lowlevel_is_virtio() in fuse_session_destroy() 2020-01-23 16:41:37 +00:00
fuse_lowlevel.h virtiofsd: print log only when priority is high enough 2020-01-23 16:41:37 +00:00
fuse_misc.h virtiofsd: support nanosecond resolution for file timestamp 2020-01-23 16:41:37 +00:00
fuse_opt.c virtiofsd: Fix common header and define for QEMU builds 2020-01-23 16:41:36 +00:00
fuse_opt.h virtiofsd: Format imported files to qemu style 2020-01-23 16:41:36 +00:00
fuse_signals.c virtiofsd: convert more fprintf and perror to use fuse log infra 2020-01-23 16:41:37 +00:00
fuse_virtio.c virtiofsd: prevent fv_queue_thread() vs virtio_loop() races 2020-01-23 16:41:37 +00:00
fuse_virtio.h virtiofsd: cleanup allocated resource in se 2020-01-23 16:41:37 +00:00
fuse.h virtiofsd: Format imported files to qemu style 2020-01-23 16:41:36 +00:00
helper.c virtiofsd: convert more fprintf and perror to use fuse log infra 2020-01-23 16:41:37 +00:00
Makefile.objs virtiofsd: add seccomp whitelist 2020-01-23 16:41:37 +00:00
passthrough_helpers.h virtiofsd: Format imported files to qemu style 2020-01-23 16:41:36 +00:00
passthrough_ll.c virtiofsd: Fix data corruption with O_APPEND write in writeback mode 2020-01-23 16:41:37 +00:00
seccomp.c virtiofsd: add --syslog command-line option 2020-01-23 16:41:37 +00:00
seccomp.h virtiofsd: add --syslog command-line option 2020-01-23 16:41:37 +00:00