使用Java进程设置Linux ACL权限

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.AclEntry;
import java.nio.file.attribute.AclEntryPermission;
import java.nio.file.attribute.AclEntryType;
import java.nio.file.attribute.AclFileAttributeView;
import java.nio.file.attribute.UserPrincipal;

Path filePath = Path.of("/path/to/file");
AclFileAttributeView aclView = Files.getFileAttributeView(filePath, AclFileAttributeView.class);

UserPrincipal user = filePath.getFileSystem().getUserPrincipalLookupService().lookupPrincipalByName("username");
AclEntry entry = AclEntry.newBuilder()
    .setType(AclEntryType.ALLOW)
    .setPrincipal(user)
    .setPermissions(AclEntryPermission.READ_DATA, AclEntryPermission.WRITE_DATA)
    .build();

aclView.setAcl(List.of(entry));