release/src-rt-6.x/linux/linux-2.6/fs/dlm/util.c

   1 /******************************************************************************
   2 *******************************************************************************
   3 **
   4 **  Copyright (C) 2005 Red Hat, Inc.  All rights reserved.
   5 **
   6 **  This copyrighted material is made available to anyone wishing to use,
   7 **  modify, copy, or redistribute it subject to the terms and conditions
   8 **  of the GNU General Public License v.2.
   9 **
  10 *******************************************************************************
  11 ******************************************************************************/
  12
  13 #include "dlm_internal.h"
  14 #include "rcom.h"
  15 #include "util.h"
  16
  17 static void header_out(struct dlm_header *hd)
  18 {
  19         hd->h_version           = cpu_to_le32(hd->h_version);
  20         hd->h_lockspace         = cpu_to_le32(hd->h_lockspace);
  21         hd->h_nodeid            = cpu_to_le32(hd->h_nodeid);
  22         hd->h_length            = cpu_to_le16(hd->h_length);
  23 }
  24
  25 static void header_in(struct dlm_header *hd)
  26 {
  27         hd->h_version           = le32_to_cpu(hd->h_version);
  28         hd->h_lockspace         = le32_to_cpu(hd->h_lockspace);
  29         hd->h_nodeid            = le32_to_cpu(hd->h_nodeid);
  30         hd->h_length            = le16_to_cpu(hd->h_length);
  31 }
  32
  33 void dlm_message_out(struct dlm_message *ms)
  34 {
  35         struct dlm_header *hd = (struct dlm_header *) ms;
  36
  37         header_out(hd);
  38
  39         ms->m_type              = cpu_to_le32(ms->m_type);
  40         ms->m_nodeid            = cpu_to_le32(ms->m_nodeid);
  41         ms->m_pid               = cpu_to_le32(ms->m_pid);
  42         ms->m_lkid              = cpu_to_le32(ms->m_lkid);
  43         ms->m_remid             = cpu_to_le32(ms->m_remid);
  44         ms->m_parent_lkid       = cpu_to_le32(ms->m_parent_lkid);
  45         ms->m_parent_remid      = cpu_to_le32(ms->m_parent_remid);
  46         ms->m_exflags           = cpu_to_le32(ms->m_exflags);
  47         ms->m_sbflags           = cpu_to_le32(ms->m_sbflags);
  48         ms->m_flags             = cpu_to_le32(ms->m_flags);
  49         ms->m_lvbseq            = cpu_to_le32(ms->m_lvbseq);
  50         ms->m_hash              = cpu_to_le32(ms->m_hash);
  51         ms->m_status            = cpu_to_le32(ms->m_status);
  52         ms->m_grmode            = cpu_to_le32(ms->m_grmode);
  53         ms->m_rqmode            = cpu_to_le32(ms->m_rqmode);
  54         ms->m_bastmode          = cpu_to_le32(ms->m_bastmode);
  55         ms->m_asts              = cpu_to_le32(ms->m_asts);
  56         ms->m_result            = cpu_to_le32(ms->m_result);
  57 }
  58
  59 void dlm_message_in(struct dlm_message *ms)
  60 {
  61         struct dlm_header *hd = (struct dlm_header *) ms;
  62
  63         header_in(hd);
  64
  65         ms->m_type              = le32_to_cpu(ms->m_type);
  66         ms->m_nodeid            = le32_to_cpu(ms->m_nodeid);
  67         ms->m_pid               = le32_to_cpu(ms->m_pid);
  68         ms->m_lkid              = le32_to_cpu(ms->m_lkid);
  69         ms->m_remid             = le32_to_cpu(ms->m_remid);
  70         ms->m_parent_lkid       = le32_to_cpu(ms->m_parent_lkid);
  71         ms->m_parent_remid      = le32_to_cpu(ms->m_parent_remid);
  72         ms->m_exflags           = le32_to_cpu(ms->m_exflags);
  73         ms->m_sbflags           = le32_to_cpu(ms->m_sbflags);
  74         ms->m_flags             = le32_to_cpu(ms->m_flags);
  75         ms->m_lvbseq            = le32_to_cpu(ms->m_lvbseq);
  76         ms->m_hash              = le32_to_cpu(ms->m_hash);
  77         ms->m_status            = le32_to_cpu(ms->m_status);
  78         ms->m_grmode            = le32_to_cpu(ms->m_grmode);
  79         ms->m_rqmode            = le32_to_cpu(ms->m_rqmode);
  80         ms->m_bastmode          = le32_to_cpu(ms->m_bastmode);
  81         ms->m_asts              = le32_to_cpu(ms->m_asts);
  82         ms->m_result            = le32_to_cpu(ms->m_result);
  83 }
  84
  85 static void rcom_lock_out(struct rcom_lock *rl)
  86 {
  87         rl->rl_ownpid           = cpu_to_le32(rl->rl_ownpid);
  88         rl->rl_lkid             = cpu_to_le32(rl->rl_lkid);
  89         rl->rl_remid            = cpu_to_le32(rl->rl_remid);
  90         rl->rl_parent_lkid      = cpu_to_le32(rl->rl_parent_lkid);
  91         rl->rl_parent_remid     = cpu_to_le32(rl->rl_parent_remid);
  92         rl->rl_exflags          = cpu_to_le32(rl->rl_exflags);
  93         rl->rl_flags            = cpu_to_le32(rl->rl_flags);
  94         rl->rl_lvbseq           = cpu_to_le32(rl->rl_lvbseq);
  95         rl->rl_result           = cpu_to_le32(rl->rl_result);
  96         rl->rl_wait_type        = cpu_to_le16(rl->rl_wait_type);
  97         rl->rl_namelen          = cpu_to_le16(rl->rl_namelen);
  98 }
  99
 100 static void rcom_lock_in(struct rcom_lock *rl)
 101 {
 102         rl->rl_ownpid           = le32_to_cpu(rl->rl_ownpid);
 103         rl->rl_lkid             = le32_to_cpu(rl->rl_lkid);
 104         rl->rl_remid            = le32_to_cpu(rl->rl_remid);
 105         rl->rl_parent_lkid      = le32_to_cpu(rl->rl_parent_lkid);
 106         rl->rl_parent_remid     = le32_to_cpu(rl->rl_parent_remid);
 107         rl->rl_exflags          = le32_to_cpu(rl->rl_exflags);
 108         rl->rl_flags            = le32_to_cpu(rl->rl_flags);
 109         rl->rl_lvbseq           = le32_to_cpu(rl->rl_lvbseq);
 110         rl->rl_result           = le32_to_cpu(rl->rl_result);
 111         rl->rl_wait_type        = le16_to_cpu(rl->rl_wait_type);
 112         rl->rl_namelen          = le16_to_cpu(rl->rl_namelen);
 113 }
 114
 115 static void rcom_config_out(struct rcom_config *rf)
 116 {
 117         rf->rf_lvblen           = cpu_to_le32(rf->rf_lvblen);
 118         rf->rf_lsflags          = cpu_to_le32(rf->rf_lsflags);
 119 }
 120
 121 static void rcom_config_in(struct rcom_config *rf)
 122 {
 123         rf->rf_lvblen           = le32_to_cpu(rf->rf_lvblen);
 124         rf->rf_lsflags          = le32_to_cpu(rf->rf_lsflags);
 125 }
 126
 127 void dlm_rcom_out(struct dlm_rcom *rc)
 128 {
 129         struct dlm_header *hd = (struct dlm_header *) rc;
 130         int type = rc->rc_type;
 131
 132         header_out(hd);
 133
 134         rc->rc_type             = cpu_to_le32(rc->rc_type);
 135         rc->rc_result           = cpu_to_le32(rc->rc_result);
 136         rc->rc_id               = cpu_to_le64(rc->rc_id);
 137         rc->rc_seq              = cpu_to_le64(rc->rc_seq);
 138         rc->rc_seq_reply        = cpu_to_le64(rc->rc_seq_reply);
 139
 140         if (type == DLM_RCOM_LOCK)
 141                 rcom_lock_out((struct rcom_lock *) rc->rc_buf);
 142
 143         else if (type == DLM_RCOM_STATUS_REPLY)
 144                 rcom_config_out((struct rcom_config *) rc->rc_buf);
 145 }
 146
 147 void dlm_rcom_in(struct dlm_rcom *rc)
 148 {
 149         struct dlm_header *hd = (struct dlm_header *) rc;
 150
 151         header_in(hd);
 152
 153         rc->rc_type             = le32_to_cpu(rc->rc_type);
 154         rc->rc_result           = le32_to_cpu(rc->rc_result);
 155         rc->rc_id               = le64_to_cpu(rc->rc_id);
 156         rc->rc_seq              = le64_to_cpu(rc->rc_seq);
 157         rc->rc_seq_reply        = le64_to_cpu(rc->rc_seq_reply);
 158
 159         if (rc->rc_type == DLM_RCOM_LOCK)
 160                 rcom_lock_in((struct rcom_lock *) rc->rc_buf);
 161
 162         else if (rc->rc_type == DLM_RCOM_STATUS_REPLY)
 163                 rcom_config_in((struct rcom_config *) rc->rc_buf);
 164 }
 165