/usr/share/gocode/src/github.com/opencontainers/runc/libcontainer/xattr/xattr_linux.go is in golang-github-opencontainers-runc-dev 0.0.8+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | // +build linux
package xattr
import (
"syscall"
"github.com/opencontainers/runc/libcontainer/system"
)
func XattrEnabled(path string) bool {
if Setxattr(path, "user.test", "") == syscall.ENOTSUP {
return false
}
return true
}
func stringsfromByte(buf []byte) (result []string) {
offset := 0
for index, b := range buf {
if b == 0 {
result = append(result, string(buf[offset:index]))
offset = index + 1
}
}
return
}
func Listxattr(path string) ([]string, error) {
size, err := system.Llistxattr(path, nil)
if err != nil {
return nil, err
}
buf := make([]byte, size)
read, err := system.Llistxattr(path, buf)
if err != nil {
return nil, err
}
names := stringsfromByte(buf[:read])
return names, nil
}
func Getxattr(path, attr string) (string, error) {
value, err := system.Lgetxattr(path, attr)
if err != nil {
return "", err
}
return string(value), nil
}
func Setxattr(path, xattr, value string) error {
return system.Lsetxattr(path, xattr, []byte(value), 0)
}
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