/// <exception cref="System.IO.IOException"/>
internal static HdfsFileStatus SetOwner(FSDirectory fsd, string src, string username
, string group)
{
FSPermissionChecker pc = fsd.GetPermissionChecker();
byte[][] pathComponents = FSDirectory.GetPathComponentsForReservedPath(src);
INodesInPath iip;
fsd.WriteLock();
try
{
src = fsd.ResolvePath(pc, src, pathComponents);
iip = fsd.GetINodesInPath4Write(src);
fsd.CheckOwner(pc, iip);
if (!pc.IsSuperUser())
{
if (username != null && !pc.GetUser().Equals(username))
{
throw new AccessControlException("Non-super user cannot change owner");
}
if (group != null && !pc.ContainsGroup(group))
{
throw new AccessControlException("User does not belong to " + group);
}
}
UnprotectedSetOwner(fsd, src, username, group);
}
finally
{
fsd.WriteUnlock();
}
fsd.GetEditLog().LogSetOwner(src, username, group);
return(fsd.GetAuditFileInfo(iip));
}
/// <exception cref="System.IO.IOException"/>
internal static SnapshottableDirectoryStatus[] GetSnapshottableDirListing(FSDirectory
fsd, SnapshotManager snapshotManager)
{
FSPermissionChecker pc = fsd.GetPermissionChecker();
fsd.ReadLock();
try
{
string user = pc.IsSuperUser() ? null : pc.GetUser();
return(snapshotManager.GetSnapshottableDirListing(user));
}
finally
{
fsd.ReadUnlock();
}
}
