util.c
/******************************************************************************
*******************************************************************************
**
** Copyright (C) 2005-2008 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»
#define DLM_ERRNO_EDEADLK 35
#define DLM_ERRNO_EBADR 53
#define DLM_ERRNO_EBADSLT 57
#define DLM_ERRNO_EPROTO 71
#define DLM_ERRNO_EOPNOTSUPP 95
#define DLM_ERRNO_ETIMEDOUT 110
#define DLM_ERRNO_EINPROGRESS 115
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);
}
/* higher errno values are inconsistent across architectures, so select
one set of values for on the wire */
static int to_dlm_errno(int err)
{
switch (err) {
case -EDEADLK:
return -DLM_ERRNO_EDEADLK;
case -EBADR:
return -DLM_ERRNO_EBADR;
case -EBADSLT:
return -DLM_ERRNO_EBADSLT;
case -EPROTO:
return -DLM_ERRNO_EPROTO;
case -EOPNOTSUPP:
return -DLM_ERRNO_EOPNOTSUPP;
case -ETIMEDOUT:
return -DLM_ERRNO_ETIMEDOUT;
case -EINPROGRESS:
return -DLM_ERRNO_EINPROGRESS;
}
return err;
}
static int from_dlm_errno(int err)
{
switch (err) {
case -DLM_ERRNO_EDEADLK:
return -EDEADLK;
case -DLM_ERRNO_EBADR:
return -EBADR;
case -DLM_ERRNO_EBADSLT:
return -EBADSLT;
case -DLM_ERRNO_EPROTO:
return -EPROTO;
case -DLM_ERRNO_EOPNOTSUPP:
return -EOPNOTSUPP;
case -DLM_ERRNO_ETIMEDOUT:
return -ETIMEDOUT;
case -DLM_ERRNO_EINPROGRESS:
return -EINPROGRESS;
}
return err;
}
void dlm_message_out(struct dlm_message *ms)
{
header_out(&ms->m_header);
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(to_dlm_errno(ms->m_result));
}
void dlm_message_in(struct dlm_message *ms)
{
header_in(&ms->m_header);
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 = from_dlm_errno(le32_to_cpu(ms->m_result));
}
void dlm_rcom_out(struct dlm_rcom *rc)
{
header_out(&rc->rc_header);
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);
rc->rc_seq = cpu_to_le64(rc->rc_seq);
rc->rc_seq_reply = cpu_to_le64(rc->rc_seq_reply);
}
void dlm_rcom_in(struct dlm_rcom *rc)
{
header_in(&rc->rc_header);
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);
rc->rc_seq = le64_to_cpu(rc->rc_seq);
rc->rc_seq_reply = le64_to_cpu(rc->rc_seq_reply);
}