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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
//go:build linux
package fuse
import (
"syscall"
"unsafe"
)
// Extended attributes support for Linux
func setXattr(path, name string, value []byte, flags int) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
nameBytes, err := syscall.BytePtrFromString(name)
if err != nil {
return err
}
var valuePtr unsafe.Pointer
if len(value) > 0 {
valuePtr = unsafe.Pointer(&value[0])
}
_, _, errno := syscall.Syscall6(syscall.SYS_SETXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(unsafe.Pointer(nameBytes)),
uintptr(valuePtr),
uintptr(len(value)),
uintptr(flags),
0)
if errno != 0 {
return errno
}
return nil
}
func getXattr(path, name string, value []byte) (int, error) {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return 0, err
}
nameBytes, err := syscall.BytePtrFromString(name)
if err != nil {
return 0, err
}
var valuePtr unsafe.Pointer
if len(value) > 0 {
valuePtr = unsafe.Pointer(&value[0])
}
size, _, errno := syscall.Syscall6(syscall.SYS_GETXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(unsafe.Pointer(nameBytes)),
uintptr(valuePtr),
uintptr(len(value)),
0,
0)
if errno != 0 {
return 0, errno
}
return int(size), nil
}
func listXattr(path string, list []byte) (int, error) {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return 0, err
}
var listPtr unsafe.Pointer
if len(list) > 0 {
listPtr = unsafe.Pointer(&list[0])
}
size, _, errno := syscall.Syscall(syscall.SYS_LISTXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(listPtr),
uintptr(len(list)))
if errno != 0 {
return 0, errno
}
return int(size), nil
}
func removeXattr(path, name string) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
nameBytes, err := syscall.BytePtrFromString(name)
if err != nil {
return err
}
_, _, errno := syscall.Syscall(syscall.SYS_REMOVEXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(unsafe.Pointer(nameBytes)),
0)
if errno != 0 {
return errno
}
return nil
}
func isXattrSupported() bool {
return true
}
|
