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