mirror of
https://chromium.googlesource.com/crosvm/crosvm
synced 2024-10-25 13:36:05 +00:00
ec5916daa0
Use the "at" variants of the read/write functions in the block device. This reduces the number of syscalls on the host per I/O to one (pread64/pwrite64) rather than two (lseek + read/write). The CompositeDiskFile implementation is also updated in this commit, since it's both a producer and consumer of DiskFile, and it isn't trivial to update it in a separate commit without breaking compilation. BUG=None TEST=Start Crostini on kevin, banon, and nami Change-Id: I031e7e87cd6c99504db8c56b1725ea51c1e27a53 Signed-off-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1845948 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Stephen Barber <smbarber@chromium.org>
18 lines
365 B
Text
18 lines
365 B
Text
# Copyright 2017 The Chromium OS Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
@include /usr/share/policy/crosvm/common_device.policy
|
|
|
|
fallocate: 1
|
|
fdatasync: 1
|
|
fstat: 1
|
|
fsync: 1
|
|
ftruncate: 1
|
|
lseek: 1
|
|
preadv: 1
|
|
pwritev: 1
|
|
timerfd_create: 1
|
|
timerfd_gettime: 1
|
|
timerfd_settime: 1
|