Add FSCTL_QUERY_ALLOCATED_RANGES to the list of Windows ioctls we support.

Based on a patch reported and tested by Ira Cooper <samba@ira.wakeful.net>.

Jeremy.

diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index b79bb0b8f2b65a8b89530c82b0aba3aada64028b..46edc066861740863d06199e6156977372be8e09 100644 (file)
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -2215,6 +2215,58 @@ static void call_nt_transact_ioctl(connection_struct *conn,
                send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
                return;
        }
+       case FSCTL_QUERY_ALLOCATED_RANGES:
+       {
+               NTSTATUS status;
+               uint64_t offset, length;
+
+               if (!fsp_belongs_conn(conn, req, fsp)) {
+                       return;
+               }
+
+               if (data_count != 16) {
+                       DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
+                               data_count));
+                       reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+                       return;
+               }
+
+               if (max_data_count < 16) {
+                       DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_data_count(%u) < 16 is invalid!\n",
+                               max_data_count));
+                       reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+                       return;
+               }
+
+               offset = BVAL(pdata,0);
+               length = BVAL(pdata,8);
+
+               if (offset + length < offset) {
+                       /* No 64-bit integer wrap. */
+                       reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+                       return;
+               }
+
+               status = vfs_stat_fsp(fsp);
+               if (!NT_STATUS_IS_OK(status)) {
+                       reply_nterror(req, status);
+                       return;
+               }
+
+               if (offset > fsp->fsp_name->st.st_ex_size ||
+                               fsp->fsp_name->st.st_ex_size == 0 ||
+                               length == 0) {
+                       send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
+               } else {
+                       uint64_t end = offset + length;
+                       end = MIN(end, fsp->fsp_name->st.st_ex_size);
+                       SBVAL(pdata,0,0);
+                       SBVAL(pdata,8,end);
+                       send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0,
+                               pdata, 16);
+               }
+               return;
+       }
        default:
                if (!logged_ioctl_message) {
                        logged_ioctl_message = true; /* Only print this once... */