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- // Copyright 2012 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- // +build linux darwin dragonfly freebsd openbsd netbsd solaris
- package tar
- import (
- "os"
- "runtime"
- "syscall"
- )
- func init() {
- sysStat = statUnix
- }
- func statUnix(fi os.FileInfo, h *Header) error {
- sys, ok := fi.Sys().(*syscall.Stat_t)
- if !ok {
- return nil
- }
- h.Uid = int(sys.Uid)
- h.Gid = int(sys.Gid)
- // TODO(bradfitz): populate username & group. os/user
- // doesn't cache LookupId lookups, and lacks group
- // lookup functions.
- h.AccessTime = statAtime(sys)
- h.ChangeTime = statCtime(sys)
- // Best effort at populating Devmajor and Devminor.
- if h.Typeflag == TypeChar || h.Typeflag == TypeBlock {
- dev := uint64(sys.Rdev) // May be int32 or uint32
- switch runtime.GOOS {
- case "linux":
- // Copied from golang.org/x/sys/unix/dev_linux.go.
- major := uint32((dev & 0x00000000000fff00) >> 8)
- major |= uint32((dev & 0xfffff00000000000) >> 32)
- minor := uint32((dev & 0x00000000000000ff) >> 0)
- minor |= uint32((dev & 0x00000ffffff00000) >> 12)
- h.Devmajor, h.Devminor = int64(major), int64(minor)
- case "darwin":
- // Copied from golang.org/x/sys/unix/dev_darwin.go.
- major := uint32((dev >> 24) & 0xff)
- minor := uint32(dev & 0xffffff)
- h.Devmajor, h.Devminor = int64(major), int64(minor)
- case "dragonfly":
- // Copied from golang.org/x/sys/unix/dev_dragonfly.go.
- major := uint32((dev >> 8) & 0xff)
- minor := uint32(dev & 0xffff00ff)
- h.Devmajor, h.Devminor = int64(major), int64(minor)
- case "freebsd":
- // Copied from golang.org/x/sys/unix/dev_freebsd.go.
- major := uint32((dev >> 8) & 0xff)
- minor := uint32(dev & 0xffff00ff)
- h.Devmajor, h.Devminor = int64(major), int64(minor)
- case "netbsd":
- // Copied from golang.org/x/sys/unix/dev_netbsd.go.
- major := uint32((dev & 0x000fff00) >> 8)
- minor := uint32((dev & 0x000000ff) >> 0)
- minor |= uint32((dev & 0xfff00000) >> 12)
- h.Devmajor, h.Devminor = int64(major), int64(minor)
- case "openbsd":
- // Copied from golang.org/x/sys/unix/dev_openbsd.go.
- major := uint32((dev & 0x0000ff00) >> 8)
- minor := uint32((dev & 0x000000ff) >> 0)
- minor |= uint32((dev & 0xffff0000) >> 8)
- h.Devmajor, h.Devminor = int64(major), int64(minor)
- default:
- // TODO: Implement solaris (see https://golang.org/issue/8106)
- }
- }
- return nil
- }
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