e7fd41792f
This is the core of the distributed lock manager which is required to use GFS2 as a cluster filesystem. It is also used by CLVM and can be used as a standalone lock manager independantly of either of these two projects. It implements VAX-style locking modes. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steve Whitehouse <swhiteho@redhat.com>
174 lines
5.7 KiB
C
174 lines
5.7 KiB
C
/******************************************************************************
|
|
*******************************************************************************
|
|
**
|
|
** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
|
|
**
|
|
** This copyrighted material is made available to anyone wishing to use,
|
|
** modify, copy, or redistribute it subject to the terms and conditions
|
|
** of the GNU General Public License v.2.
|
|
**
|
|
*******************************************************************************
|
|
******************************************************************************/
|
|
|
|
#include "dlm_internal.h"
|
|
#include "rcom.h"
|
|
#include "util.h"
|
|
|
|
static void header_out(struct dlm_header *hd)
|
|
{
|
|
hd->h_version = cpu_to_le32(hd->h_version);
|
|
hd->h_lockspace = cpu_to_le32(hd->h_lockspace);
|
|
hd->h_nodeid = cpu_to_le32(hd->h_nodeid);
|
|
hd->h_length = cpu_to_le16(hd->h_length);
|
|
}
|
|
|
|
static void header_in(struct dlm_header *hd)
|
|
{
|
|
hd->h_version = le32_to_cpu(hd->h_version);
|
|
hd->h_lockspace = le32_to_cpu(hd->h_lockspace);
|
|
hd->h_nodeid = le32_to_cpu(hd->h_nodeid);
|
|
hd->h_length = le16_to_cpu(hd->h_length);
|
|
}
|
|
|
|
void dlm_message_out(struct dlm_message *ms)
|
|
{
|
|
struct dlm_header *hd = (struct dlm_header *) ms;
|
|
|
|
header_out(hd);
|
|
|
|
ms->m_type = cpu_to_le32(ms->m_type);
|
|
ms->m_nodeid = cpu_to_le32(ms->m_nodeid);
|
|
ms->m_pid = cpu_to_le32(ms->m_pid);
|
|
ms->m_lkid = cpu_to_le32(ms->m_lkid);
|
|
ms->m_remid = cpu_to_le32(ms->m_remid);
|
|
ms->m_parent_lkid = cpu_to_le32(ms->m_parent_lkid);
|
|
ms->m_parent_remid = cpu_to_le32(ms->m_parent_remid);
|
|
ms->m_exflags = cpu_to_le32(ms->m_exflags);
|
|
ms->m_sbflags = cpu_to_le32(ms->m_sbflags);
|
|
ms->m_flags = cpu_to_le32(ms->m_flags);
|
|
ms->m_lvbseq = cpu_to_le32(ms->m_lvbseq);
|
|
ms->m_hash = cpu_to_le32(ms->m_hash);
|
|
ms->m_status = cpu_to_le32(ms->m_status);
|
|
ms->m_grmode = cpu_to_le32(ms->m_grmode);
|
|
ms->m_rqmode = cpu_to_le32(ms->m_rqmode);
|
|
ms->m_bastmode = cpu_to_le32(ms->m_bastmode);
|
|
ms->m_asts = cpu_to_le32(ms->m_asts);
|
|
ms->m_result = cpu_to_le32(ms->m_result);
|
|
ms->m_range[0] = cpu_to_le64(ms->m_range[0]);
|
|
ms->m_range[1] = cpu_to_le64(ms->m_range[1]);
|
|
}
|
|
|
|
void dlm_message_in(struct dlm_message *ms)
|
|
{
|
|
struct dlm_header *hd = (struct dlm_header *) ms;
|
|
|
|
header_in(hd);
|
|
|
|
ms->m_type = le32_to_cpu(ms->m_type);
|
|
ms->m_nodeid = le32_to_cpu(ms->m_nodeid);
|
|
ms->m_pid = le32_to_cpu(ms->m_pid);
|
|
ms->m_lkid = le32_to_cpu(ms->m_lkid);
|
|
ms->m_remid = le32_to_cpu(ms->m_remid);
|
|
ms->m_parent_lkid = le32_to_cpu(ms->m_parent_lkid);
|
|
ms->m_parent_remid = le32_to_cpu(ms->m_parent_remid);
|
|
ms->m_exflags = le32_to_cpu(ms->m_exflags);
|
|
ms->m_sbflags = le32_to_cpu(ms->m_sbflags);
|
|
ms->m_flags = le32_to_cpu(ms->m_flags);
|
|
ms->m_lvbseq = le32_to_cpu(ms->m_lvbseq);
|
|
ms->m_hash = le32_to_cpu(ms->m_hash);
|
|
ms->m_status = le32_to_cpu(ms->m_status);
|
|
ms->m_grmode = le32_to_cpu(ms->m_grmode);
|
|
ms->m_rqmode = le32_to_cpu(ms->m_rqmode);
|
|
ms->m_bastmode = le32_to_cpu(ms->m_bastmode);
|
|
ms->m_asts = le32_to_cpu(ms->m_asts);
|
|
ms->m_result = le32_to_cpu(ms->m_result);
|
|
ms->m_range[0] = le64_to_cpu(ms->m_range[0]);
|
|
ms->m_range[1] = le64_to_cpu(ms->m_range[1]);
|
|
}
|
|
|
|
static void rcom_lock_out(struct rcom_lock *rl)
|
|
{
|
|
rl->rl_ownpid = cpu_to_le32(rl->rl_ownpid);
|
|
rl->rl_lkid = cpu_to_le32(rl->rl_lkid);
|
|
rl->rl_remid = cpu_to_le32(rl->rl_remid);
|
|
rl->rl_parent_lkid = cpu_to_le32(rl->rl_parent_lkid);
|
|
rl->rl_parent_remid = cpu_to_le32(rl->rl_parent_remid);
|
|
rl->rl_exflags = cpu_to_le32(rl->rl_exflags);
|
|
rl->rl_flags = cpu_to_le32(rl->rl_flags);
|
|
rl->rl_lvbseq = cpu_to_le32(rl->rl_lvbseq);
|
|
rl->rl_result = cpu_to_le32(rl->rl_result);
|
|
rl->rl_wait_type = cpu_to_le16(rl->rl_wait_type);
|
|
rl->rl_namelen = cpu_to_le16(rl->rl_namelen);
|
|
rl->rl_range[0] = cpu_to_le64(rl->rl_range[0]);
|
|
rl->rl_range[1] = cpu_to_le64(rl->rl_range[1]);
|
|
rl->rl_range[2] = cpu_to_le64(rl->rl_range[2]);
|
|
rl->rl_range[3] = cpu_to_le64(rl->rl_range[3]);
|
|
}
|
|
|
|
static void rcom_lock_in(struct rcom_lock *rl)
|
|
{
|
|
rl->rl_ownpid = le32_to_cpu(rl->rl_ownpid);
|
|
rl->rl_lkid = le32_to_cpu(rl->rl_lkid);
|
|
rl->rl_remid = le32_to_cpu(rl->rl_remid);
|
|
rl->rl_parent_lkid = le32_to_cpu(rl->rl_parent_lkid);
|
|
rl->rl_parent_remid = le32_to_cpu(rl->rl_parent_remid);
|
|
rl->rl_exflags = le32_to_cpu(rl->rl_exflags);
|
|
rl->rl_flags = le32_to_cpu(rl->rl_flags);
|
|
rl->rl_lvbseq = le32_to_cpu(rl->rl_lvbseq);
|
|
rl->rl_result = le32_to_cpu(rl->rl_result);
|
|
rl->rl_wait_type = le16_to_cpu(rl->rl_wait_type);
|
|
rl->rl_namelen = le16_to_cpu(rl->rl_namelen);
|
|
rl->rl_range[0] = le64_to_cpu(rl->rl_range[0]);
|
|
rl->rl_range[1] = le64_to_cpu(rl->rl_range[1]);
|
|
rl->rl_range[2] = le64_to_cpu(rl->rl_range[2]);
|
|
rl->rl_range[3] = le64_to_cpu(rl->rl_range[3]);
|
|
}
|
|
|
|
static void rcom_config_out(struct rcom_config *rf)
|
|
{
|
|
rf->rf_lvblen = cpu_to_le32(rf->rf_lvblen);
|
|
rf->rf_lsflags = cpu_to_le32(rf->rf_lsflags);
|
|
}
|
|
|
|
static void rcom_config_in(struct rcom_config *rf)
|
|
{
|
|
rf->rf_lvblen = le32_to_cpu(rf->rf_lvblen);
|
|
rf->rf_lsflags = le32_to_cpu(rf->rf_lsflags);
|
|
}
|
|
|
|
void dlm_rcom_out(struct dlm_rcom *rc)
|
|
{
|
|
struct dlm_header *hd = (struct dlm_header *) rc;
|
|
int type = rc->rc_type;
|
|
|
|
header_out(hd);
|
|
|
|
rc->rc_type = cpu_to_le32(rc->rc_type);
|
|
rc->rc_result = cpu_to_le32(rc->rc_result);
|
|
rc->rc_id = cpu_to_le64(rc->rc_id);
|
|
|
|
if (type == DLM_RCOM_LOCK)
|
|
rcom_lock_out((struct rcom_lock *) rc->rc_buf);
|
|
|
|
else if (type == DLM_RCOM_STATUS_REPLY)
|
|
rcom_config_out((struct rcom_config *) rc->rc_buf);
|
|
}
|
|
|
|
void dlm_rcom_in(struct dlm_rcom *rc)
|
|
{
|
|
struct dlm_header *hd = (struct dlm_header *) rc;
|
|
|
|
header_in(hd);
|
|
|
|
rc->rc_type = le32_to_cpu(rc->rc_type);
|
|
rc->rc_result = le32_to_cpu(rc->rc_result);
|
|
rc->rc_id = le64_to_cpu(rc->rc_id);
|
|
|
|
if (rc->rc_type == DLM_RCOM_LOCK)
|
|
rcom_lock_in((struct rcom_lock *) rc->rc_buf);
|
|
|
|
else if (rc->rc_type == DLM_RCOM_STATUS_REPLY)
|
|
rcom_config_in((struct rcom_config *) rc->rc_buf);
|
|
}
|
|
|