1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  *
  25  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
  26  */
  27 
  28 /*
  29  * SMB: process_exit
  30  *
  31  * This command informs the server that a client process has terminated.
  32  * The server must close all files opened by Pid in the SMB header.  This
  33  * must automatically release all locks the process holds.
  34  *
  35  * Client Request                     Description
  36  * ================================== =================================
  37  *
  38  * UCHAR WordCount;                   Count of parameter words = 0
  39  * USHORT ByteCount;                  Count of data bytes = 0
  40  *
  41  * Server Response                    Description
  42  * ================================== =================================
  43  *
  44  * UCHAR WordCount;                   Count of parameter words = 0
  45  *  USHORT ByteCount;                 Count of data bytes = 0
  46  *
  47  * This SMB should not generate any errors from the server, unless the
  48  * server is a user mode server and Uid in the SMB header is invalid.
  49  *
  50  * Clients are not required to send this SMB, they can do all cleanup
  51  * necessary by sending close SMBs to the server to release resources.  In
  52  * fact, clients who have negotiated LANMAN 1.0 and later probably do not
  53  * send this message at all.
  54  */
  55 
  56 #include <smbsrv/smb_kproto.h>
  57 
  58 smb_sdrc_t
  59 smb_pre_process_exit(smb_request_t *sr)
  60 {
  61         DTRACE_SMB_START(op__ProcessExit, smb_request_t *, sr);
  62         return (SDRC_SUCCESS);
  63 }
  64 
  65 void
  66 smb_post_process_exit(smb_request_t *sr)
  67 {
  68         DTRACE_SMB_DONE(op__ProcessExit, smb_request_t *, sr);
  69 }
  70 
  71 smb_sdrc_t
  72 smb_com_process_exit(smb_request_t *sr)
  73 {
  74         int rc;
  75 
  76         sr->uid_user = smb_session_lookup_uid(sr->session, sr->smb_uid);
  77         if (sr->uid_user == NULL) {
  78                 rc = smbsr_encode_empty_result(sr);
  79                 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
  80         }
  81 
  82         sr->user_cr = smb_user_getcred(sr->uid_user);
  83 
  84         /*
  85          * If request has a valid tree ID, only look for the PID within
  86          * that tree.  Otherwise look in all the trees.  smbtorture seems
  87          * to be the only thing that sends this request these days and
  88          * it doesn't provide a TID.
  89          */
  90         sr->tid_tree = smb_session_lookup_tree(sr->session, sr->smb_tid);
  91         if (sr->tid_tree != NULL)
  92                 smb_tree_close_pid(sr->tid_tree, sr->smb_pid);
  93         else
  94                 smb_session_close_pid(sr->session, sr->smb_pid);
  95 
  96         rc = smbsr_encode_empty_result(sr);
  97         return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
  98 }