libgo/go/os/stat.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package os
   6
   7 import (
   8         "syscall"
   9         "time"
  10 )
  11
  12 func sameFile(fs1, fs2 *fileStat) bool {
  13         stat1 := fs1.sys.(*syscall.Stat_t)
  14         stat2 := fs2.sys.(*syscall.Stat_t)
  15         return stat1.Dev == stat2.Dev && stat1.Ino == stat2.Ino
  16 }
  17
  18 func fileInfoFromStat(st *syscall.Stat_t, name string) FileInfo {
  19         fs := &fileStat{
  20                 name:    basename(name),
  21                 size:    int64(st.Size),
  22                 modTime: timespecToTime(st.Mtim),
  23                 sys:     st,
  24         }
  25         fs.mode = FileMode(st.Mode & 0777)
  26         switch st.Mode & syscall.S_IFMT {
  27         case syscall.S_IFBLK, syscall.S_IFCHR:
  28                 fs.mode |= ModeDevice
  29         case syscall.S_IFDIR:
  30                 fs.mode |= ModeDir
  31         case syscall.S_IFIFO:
  32                 fs.mode |= ModeNamedPipe
  33         case syscall.S_IFLNK:
  34                 fs.mode |= ModeSymlink
  35         case syscall.S_IFREG:
  36                 // nothing to do
  37         case syscall.S_IFSOCK:
  38                 fs.mode |= ModeSocket
  39         }
  40         if st.Mode&syscall.S_ISGID != 0 {
  41                 fs.mode |= ModeSetgid
  42         }
  43         if st.Mode&syscall.S_ISUID != 0 {
  44                 fs.mode |= ModeSetuid
  45         }
  46         return fs
  47 }
  48
  49 func timespecToTime(ts syscall.Timespec) time.Time {
  50         return time.Unix(int64(ts.Sec), int64(ts.Nsec))
  51 }
  52
  53 // For testing.
  54 func atime(fi FileInfo) time.Time {
  55         return timespecToTime(fi.Sys().(*syscall.Stat_t).Atim)
  56 }