ceph-csi/vendor/github.com/opencontainers/selinux/go-selinux/xattrs_linux.go
dependabot[bot] b2099eb3b1 rebase: bump k8s.io/kubernetes from 1.22.3 to 1.22.4
Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.22.3 to 1.22.4.
- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](https://github.com/kubernetes/kubernetes/compare/v1.22.3...v1.22.4)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
2021-11-22 13:23:58 +00:00

39 lines
871 B
Go

package selinux
import (
"golang.org/x/sys/unix"
)
// lgetxattr returns a []byte slice containing the value of
// an extended attribute attr set for path.
func lgetxattr(path, attr string) ([]byte, error) {
// Start with a 128 length byte array
dest := make([]byte, 128)
sz, errno := doLgetxattr(path, attr, dest)
for errno == unix.ERANGE {
// Buffer too small, use zero-sized buffer to get the actual size
sz, errno = doLgetxattr(path, attr, []byte{})
if errno != nil {
return nil, errno
}
dest = make([]byte, sz)
sz, errno = doLgetxattr(path, attr, dest)
}
if errno != nil {
return nil, errno
}
return dest[:sz], nil
}
// doLgetxattr is a wrapper that retries on EINTR
func doLgetxattr(path, attr string, dest []byte) (int, error) {
for {
sz, err := unix.Lgetxattr(path, attr, dest)
if err != unix.EINTR {
return sz, err
}
}
}