/
perm_unix.go
49 lines (42 loc) · 945 Bytes
/
perm_unix.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// Copyright (c) 2017, Andrey Nering <andrey.nering@gmail.com>
// See LICENSE for licensing information
// +build !windows
package interp
import (
"os"
"os/user"
"strconv"
"syscall"
)
// hasPermissionToDir returns if the OS current user has execute permission
// to the given directory
func hasPermissionToDir(info os.FileInfo) bool {
user, err := user.Current()
if err != nil {
return true
}
uid, _ := strconv.Atoi(user.Uid)
// super-user
if uid == 0 {
return true
}
st, _ := info.Sys().(*syscall.Stat_t)
if st == nil {
return true
}
perm := info.Mode().Perm()
// user (u)
if perm&0100 != 0 && st.Uid == uint32(uid) {
return true
}
gid, _ := strconv.Atoi(user.Gid)
// other users in group (g)
if perm&0010 != 0 && st.Uid != uint32(uid) && st.Gid == uint32(gid) {
return true
}
// remaining users (o)
if perm&0001 != 0 && st.Uid != uint32(uid) && st.Gid != uint32(gid) {
return true
}
return false
}