How to use

hasAclPermission

method

in

org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker

private boolean hasPermission(INodeAttributes inode, FsAction access) {
 if (inode == null) {
  return true;
 }
 final FsPermission mode = inode.getFsPermission();
 final AclFeature aclFeature = inode.getAclFeature();
 if (aclFeature != null && aclFeature.getEntriesSize() > 0) {
  // It's possible that the inode has a default ACL but no access ACL.
  int firstEntry = aclFeature.getEntryAt(0);
  if (AclEntryStatusFormat.getScope(firstEntry) == AclEntryScope.ACCESS) {
   return hasAclPermission(inode, access, mode, aclFeature);
  }
 }
 final FsAction checkAction;
 if (getUser().equals(inode.getUserName())) { //user class
  checkAction = mode.getUserAction();
 } else if (isMemberOfGroup(inode.getGroupName())) { //group class
  checkAction = mode.getGroupAction();
 } else { //other class
  checkAction = mode.getOtherAction();
 }
 return checkAction.implies(access);
}

private boolean hasPermission(INodeAttributes inode, FsAction access) {
 if (inode == null) {
  return true;
 }
 final FsPermission mode = inode.getFsPermission();
 final AclFeature aclFeature = inode.getAclFeature();
 if (aclFeature != null) {
  // It's possible that the inode has a default ACL but no access ACL.
  int firstEntry = aclFeature.getEntryAt(0);
  if (AclEntryStatusFormat.getScope(firstEntry) == AclEntryScope.ACCESS) {
   return hasAclPermission(inode, access, mode, aclFeature);
  }
 }
 final FsAction checkAction;
 if (getUser().equals(inode.getUserName())) { //user class
  checkAction = mode.getUserAction();
 } else if (getGroups().contains(inode.getGroupName())) { //group class
  checkAction = mode.getGroupAction();
 } else { //other class
  checkAction = mode.getOtherAction();
 }
 return checkAction.implies(access);
}

private boolean hasPermission(INodeAttributes inode, FsAction access) {
 if (inode == null) {
  return true;
 }
 final FsPermission mode = inode.getFsPermission();
 final AclFeature aclFeature = inode.getAclFeature();
 if (aclFeature != null) {
  // It's possible that the inode has a default ACL but no access ACL.
  int firstEntry = aclFeature.getEntryAt(0);
  if (AclEntryStatusFormat.getScope(firstEntry) == AclEntryScope.ACCESS) {
   return hasAclPermission(inode, access, mode, aclFeature);
  }
 }
 final FsAction checkAction;
 if (getUser().equals(inode.getUserName())) { //user class
  checkAction = mode.getUserAction();
 } else if (isMemberOfGroup(inode.getGroupName())) { //group class
  checkAction = mode.getGroupAction();
 } else { //other class
  checkAction = mode.getOtherAction();
 }
 return checkAction.implies(access);
}