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NEX-1643 dtrace provider for smbsrv
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
SMB-63 taskq_create_proc ... TQ_DYNAMIC puts tasks in p0
re #11974 CIFS Share - Tree connect fails from Windows 7 Clients


   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 
  26 /*
  27  * SMB: process_exit
  28  *
  29  * This command informs the server that a client process has terminated.
  30  * The server must close all files opened by Pid in the SMB header.  This
  31  * must automatically release all locks the process holds.
  32  *
  33  * Client Request                     Description
  34  * ================================== =================================
  35  *
  36  * UCHAR WordCount;                   Count of parameter words = 0
  37  * USHORT ByteCount;                  Count of data bytes = 0
  38  *
  39  * Server Response                    Description
  40  * ================================== =================================
  41  *
  42  * UCHAR WordCount;                   Count of parameter words = 0
  43  *  USHORT ByteCount;                 Count of data bytes = 0
  44  *
  45  * This SMB should not generate any errors from the server, unless the
  46  * server is a user mode server and Uid in the SMB header is invalid.
  47  *
  48  * Clients are not required to send this SMB, they can do all cleanup
  49  * necessary by sending close SMBs to the server to release resources.  In
  50  * fact, clients who have negotiated LANMAN 1.0 and later probably do not
  51  * send this message at all.
  52  */
  53 
  54 #include <smbsrv/smb_kproto.h>
  55 
  56 smb_sdrc_t
  57 smb_pre_process_exit(smb_request_t *sr)
  58 {
  59         DTRACE_SMB_1(op__ProcessExit__start, smb_request_t *, sr);
  60         return (SDRC_SUCCESS);
  61 }
  62 
  63 void
  64 smb_post_process_exit(smb_request_t *sr)
  65 {
  66         DTRACE_SMB_1(op__ProcessExit__done, smb_request_t *, sr);
  67 }
  68 
  69 smb_sdrc_t
  70 smb_com_process_exit(smb_request_t *sr)
  71 {
  72         int rc;
  73 
  74         sr->uid_user = smb_session_lookup_uid(sr->session, sr->smb_uid);
  75         if (sr->uid_user == NULL) {
  76                 rc = smbsr_encode_empty_result(sr);
  77                 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
  78         }
  79 
  80         sr->user_cr = smb_user_getcred(sr->uid_user);
  81 
  82         /*
  83          * If request has a valid tree ID, only look for the PID within
  84          * that tree.  Otherwise look in all the trees.  smbtorture seems
  85          * to be the only thing that sends this request these days and
  86          * it doesn't provide a TID.


   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.