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// Copyright 2020 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build arm64
package vfs2
import (
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/sentry/kernel"
"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
)
// This takes both input and output as pointer arguments to avoid copying large
// structs.
func convertStatxToUserStat(t *kernel.Task, statx *linux.Statx, stat *linux.Stat) {
// Linux just copies fields from struct kstat without regard to struct
// kstat::result_mask (fs/stat.c:cp_new_stat()), so we do too.
userns := t.UserNamespace()
*stat = linux.Stat{
Dev: uint64(linux.MakeDeviceID(uint16(statx.DevMajor), statx.DevMinor)),
Ino: statx.Ino,
Nlink: uint32(statx.Nlink),
Mode: uint32(statx.Mode),
UID: uint32(auth.KUID(statx.UID).In(userns).OrOverflow()),
GID: uint32(auth.KGID(statx.GID).In(userns).OrOverflow()),
Rdev: uint64(linux.MakeDeviceID(uint16(statx.RdevMajor), statx.RdevMinor)),
Size: int64(statx.Size),
Blksize: int32(statx.Blksize),
Blocks: int64(statx.Blocks),
ATime: timespecFromStatxTimestamp(statx.Atime),
MTime: timespecFromStatxTimestamp(statx.Mtime),
CTime: timespecFromStatxTimestamp(statx.Ctime),
}
}
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