The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netsmb/smb_rq.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2000-2001 Boris Popov
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: stable/12/sys/netsmb/smb_rq.h 326272 2017-11-27 15:23:17Z pfg $
   29  */
   30 #ifndef _NETSMB_SMB_RQ_H_
   31 #define _NETSMB_SMB_RQ_H_
   32 
   33 #ifndef MB_MSYSTEM
   34 #include <sys/mchain.h>
   35 #endif
   36 
   37 #define SMBR_ALLOCED            0x0001  /* structure was malloced */
   38 #define SMBR_SENT               0x0002  /* request successfully transmitted */
   39 #define SMBR_REXMIT             0x0004  /* request should be retransmitted */
   40 #define SMBR_INTR               0x0008  /* request interrupted */
   41 #define SMBR_RESTART            0x0010  /* request should be repeated if possible */
   42 #define SMBR_NORESTART          0x0020  /* request is not restartable */
   43 #define SMBR_MULTIPACKET        0x0040  /* multiple packets can be sent and received */
   44 #define SMBR_INTERNAL           0x0080  /* request is internal to smbrqd */
   45 #define SMBR_XLOCK              0x0100  /* request locked and can't be moved */
   46 #define SMBR_XLOCKWANT          0x0200  /* waiter on XLOCK */
   47 
   48 #define SMBT2_ALLSENT           0x0001  /* all data and params are sent */
   49 #define SMBT2_ALLRECV           0x0002  /* all data and params are received */
   50 #define SMBT2_ALLOCED           0x0004
   51 #define SMBT2_RESTART           0x0008
   52 #define SMBT2_NORESTART         0x0010
   53 #define SMBT2_SECONDARY         0x0020  /* secondary request */
   54 
   55 #define SMBRQ_SLOCK(rqp)        smb_sl_lock(&(rqp)->sr_slock)
   56 #define SMBRQ_SUNLOCK(rqp)      smb_sl_unlock(&(rqp)->sr_slock)
   57 #define SMBRQ_SLOCKPTR(rqp)     (&(rqp)->sr_slock)
   58 
   59 
   60 enum smbrq_state {
   61         SMBRQ_NOTSENT,          /* rq have data to send */
   62         SMBRQ_SENT,             /* send procedure completed */
   63         SMBRQ_REPLYRECEIVED,
   64         SMBRQ_NOTIFIED          /* owner notified about completion */
   65 };
   66 
   67 struct smb_vc;
   68 struct smb_t2rq;
   69 
   70 struct smb_rq {
   71         enum smbrq_state        sr_state;
   72         struct smb_vc *         sr_vc;
   73         struct smb_share*       sr_share;
   74         u_short                 sr_mid;
   75         u_int32_t               sr_seqno;
   76         u_int32_t               sr_rseqno;
   77         struct mbchain          sr_rq;
   78         u_int8_t                sr_rqflags;
   79         u_int16_t               sr_rqflags2;
   80         u_char *                sr_wcount;
   81         void *                  sr_bcount;      /* Points to 2-byte buffer. */
   82         struct mdchain          sr_rp;
   83         int                     sr_rpgen;
   84         int                     sr_rplast;
   85         int                     sr_flags;       /* SMBR_* */
   86         int                     sr_rpsize;
   87         struct smb_cred *       sr_cred;
   88         int                     sr_timo;
   89         int                     sr_rexmit;
   90         int                     sr_sendcnt;
   91         struct timespec         sr_timesent;
   92         int                     sr_lerror;
   93         u_int8_t *              sr_rqsig;
   94         void *                  sr_rqtid;       /* Points to 2-byte buffer. */
   95         void *                  sr_rquid;       /* Points to 2-byte buffer. */
   96         u_int8_t                sr_errclass;
   97         u_int16_t               sr_serror;
   98         u_int32_t               sr_error;
   99         u_int8_t                sr_rpflags;
  100         u_int16_t               sr_rpflags2;
  101         u_int16_t               sr_rptid;
  102         u_int16_t               sr_rppid;
  103         u_int16_t               sr_rpuid;
  104         u_int16_t               sr_rpmid;
  105         struct smb_slock        sr_slock;       /* short term locks */
  106         struct smb_t2rq *       sr_t2;
  107         TAILQ_ENTRY(smb_rq)     sr_link;
  108 };
  109 
  110 struct smb_t2rq {
  111         u_int16_t       t2_setupcount;
  112         u_int16_t *     t2_setupdata;
  113         u_int16_t       t2_setup[2];    /* most of rqs has setupcount of 1 */
  114         u_int8_t        t2_maxscount;   /* max setup words to return */
  115         u_int16_t       t2_maxpcount;   /* max param bytes to return */
  116         u_int16_t       t2_maxdcount;   /* max data bytes to return */
  117         u_int16_t       t2_fid;         /* for T2 request */
  118         char *          t_name;         /* for T request, should be zero for T2 */
  119         int             t2_flags;       /* SMBT2_ */
  120         struct mbchain  t2_tparam;      /* parameters to transmit */
  121         struct mbchain  t2_tdata;       /* data to transmit */
  122         struct mdchain  t2_rparam;      /* received parameters */
  123         struct mdchain  t2_rdata;       /* received data */
  124         struct smb_cred*t2_cred;
  125         struct smb_connobj *t2_source;
  126         struct smb_rq * t2_rq;
  127         struct smb_vc * t2_vc;
  128 };
  129 
  130 int  smb_rq_alloc(struct smb_connobj *layer, u_char cmd,
  131         struct smb_cred *scred, struct smb_rq **rqpp);
  132 int  smb_rq_init(struct smb_rq *rqp, struct smb_connobj *layer, u_char cmd,
  133         struct smb_cred *scred);
  134 void smb_rq_done(struct smb_rq *rqp);
  135 int  smb_rq_getrequest(struct smb_rq *rqp, struct mbchain **mbpp);
  136 int  smb_rq_getreply(struct smb_rq *rqp, struct mdchain **mbpp);
  137 void smb_rq_wstart(struct smb_rq *rqp);
  138 void smb_rq_wend(struct smb_rq *rqp);
  139 void smb_rq_bstart(struct smb_rq *rqp);
  140 void smb_rq_bend(struct smb_rq *rqp);
  141 int  smb_rq_intr(struct smb_rq *rqp);
  142 int  smb_rq_simple(struct smb_rq *rqp);
  143 
  144 int  smb_t2_alloc(struct smb_connobj *layer, u_short setup, struct smb_cred *scred,
  145         struct smb_t2rq **rqpp);
  146 int  smb_t2_init(struct smb_t2rq *rqp, struct smb_connobj *layer, u_short setup,
  147         struct smb_cred *scred);
  148 void smb_t2_done(struct smb_t2rq *t2p);
  149 int  smb_t2_request(struct smb_t2rq *t2p);
  150 
  151 #endif /* !_NETSMB_SMB_RQ_H_ */

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