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libgo: Update to weekly.2012-02-07.
[pf3gnuchains/gcc-fork.git] / 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(sys1, sys2 interface{}) bool {
13         stat1 := sys1.(*syscall.Stat_t)
14         stat2 := sys2.(*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.Mtime),
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).Atime)
56 }