/// <exception cref="System.IO.IOException"/>
internal static SnapshotDiffReport GetSnapshotDiffReport(FSDirectory fsd, SnapshotManager
snapshotManager, string path, string fromSnapshot, string toSnapshot)
{
SnapshotDiffReport diffs;
FSPermissionChecker pc = fsd.GetPermissionChecker();
fsd.ReadLock();
try
{
if (fsd.IsPermissionEnabled())
{
CheckSubtreeReadPermission(fsd, pc, path, fromSnapshot);
CheckSubtreeReadPermission(fsd, pc, path, toSnapshot);
}
INodesInPath iip = fsd.GetINodesInPath(path, true);
diffs = snapshotManager.Diff(iip, path, fromSnapshot, toSnapshot);
}
finally
{
fsd.ReadUnlock();
}
return(diffs);
}