1// SPDX-License-Identifier: GPL-2.0-only 2/****************************************************************************** 3******************************************************************************* 4** 5** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved. 6** 7** 8******************************************************************************* 9******************************************************************************/ 10 11#include "dlm_internal.h" 12#include "rcom.h" 13#include "util.h" 14 15#define DLM_ERRNO_EDEADLK 35 16#define DLM_ERRNO_EBADR 53 17#define DLM_ERRNO_EBADSLT 57 18#define DLM_ERRNO_EPROTO 71 19#define DLM_ERRNO_EOPNOTSUPP 95 20#define DLM_ERRNO_ETIMEDOUT 110 21#define DLM_ERRNO_EINPROGRESS 115 22 23static void header_out(struct dlm_header *hd) 24{ 25 hd->h_version = cpu_to_le32(hd->h_version); 26 hd->h_lockspace = cpu_to_le32(hd->h_lockspace); 27 hd->h_nodeid = cpu_to_le32(hd->h_nodeid); 28 hd->h_length = cpu_to_le16(hd->h_length); 29} 30 31static void header_in(struct dlm_header *hd) 32{ 33 hd->h_version = le32_to_cpu(hd->h_version); 34 hd->h_lockspace = le32_to_cpu(hd->h_lockspace); 35 hd->h_nodeid = le32_to_cpu(hd->h_nodeid); 36 hd->h_length = le16_to_cpu(hd->h_length); 37} 38 39/* higher errno values are inconsistent across architectures, so select 40 one set of values for on the wire */ 41 42static int to_dlm_errno(int err) 43{ 44 switch (err) { 45 case -EDEADLK: 46 return -DLM_ERRNO_EDEADLK; 47 case -EBADR: 48 return -DLM_ERRNO_EBADR; 49 case -EBADSLT: 50 return -DLM_ERRNO_EBADSLT; 51 case -EPROTO: 52 return -DLM_ERRNO_EPROTO; 53 case -EOPNOTSUPP: 54 return -DLM_ERRNO_EOPNOTSUPP; 55 case -ETIMEDOUT: 56 return -DLM_ERRNO_ETIMEDOUT; 57 case -EINPROGRESS: 58 return -DLM_ERRNO_EINPROGRESS; 59 } 60 return err; 61} 62 63static int from_dlm_errno(int err) 64{ 65 switch (err) { 66 case -DLM_ERRNO_EDEADLK: 67 return -EDEADLK; 68 case -DLM_ERRNO_EBADR: 69 return -EBADR; 70 case -DLM_ERRNO_EBADSLT: 71 return -EBADSLT; 72 case -DLM_ERRNO_EPROTO: 73 return -EPROTO; 74 case -DLM_ERRNO_EOPNOTSUPP: 75 return -EOPNOTSUPP; 76 case -DLM_ERRNO_ETIMEDOUT: 77 return -ETIMEDOUT; 78 case -DLM_ERRNO_EINPROGRESS: 79 return -EINPROGRESS; 80 } 81 return err; 82} 83 84void dlm_message_out(struct dlm_message *ms) 85{ 86 header_out(&ms->m_header); 87 88 ms->m_type = cpu_to_le32(ms->m_type); 89 ms->m_nodeid = cpu_to_le32(ms->m_nodeid); 90 ms->m_pid = cpu_to_le32(ms->m_pid); 91 ms->m_lkid = cpu_to_le32(ms->m_lkid); 92 ms->m_remid = cpu_to_le32(ms->m_remid); 93 ms->m_parent_lkid = cpu_to_le32(ms->m_parent_lkid); 94 ms->m_parent_remid = cpu_to_le32(ms->m_parent_remid); 95 ms->m_exflags = cpu_to_le32(ms->m_exflags); 96 ms->m_sbflags = cpu_to_le32(ms->m_sbflags); 97 ms->m_flags = cpu_to_le32(ms->m_flags); 98 ms->m_lvbseq = cpu_to_le32(ms->m_lvbseq); 99 ms->m_hash = cpu_to_le32(ms->m_hash); 100 ms->m_status = cpu_to_le32(ms->m_status); 101 ms->m_grmode = cpu_to_le32(ms->m_grmode); 102 ms->m_rqmode = cpu_to_le32(ms->m_rqmode); 103 ms->m_bastmode = cpu_to_le32(ms->m_bastmode); 104 ms->m_asts = cpu_to_le32(ms->m_asts); 105 ms->m_result = cpu_to_le32(to_dlm_errno(ms->m_result)); 106} 107 108void dlm_message_in(struct dlm_message *ms) 109{ 110 header_in(&ms->m_header); 111 112 ms->m_type = le32_to_cpu(ms->m_type); 113 ms->m_nodeid = le32_to_cpu(ms->m_nodeid); 114 ms->m_pid = le32_to_cpu(ms->m_pid); 115 ms->m_lkid = le32_to_cpu(ms->m_lkid); 116 ms->m_remid = le32_to_cpu(ms->m_remid); 117 ms->m_parent_lkid = le32_to_cpu(ms->m_parent_lkid); 118 ms->m_parent_remid = le32_to_cpu(ms->m_parent_remid); 119 ms->m_exflags = le32_to_cpu(ms->m_exflags); 120 ms->m_sbflags = le32_to_cpu(ms->m_sbflags); 121 ms->m_flags = le32_to_cpu(ms->m_flags); 122 ms->m_lvbseq = le32_to_cpu(ms->m_lvbseq); 123 ms->m_hash = le32_to_cpu(ms->m_hash); 124 ms->m_status = le32_to_cpu(ms->m_status); 125 ms->m_grmode = le32_to_cpu(ms->m_grmode); 126 ms->m_rqmode = le32_to_cpu(ms->m_rqmode); 127 ms->m_bastmode = le32_to_cpu(ms->m_bastmode); 128 ms->m_asts = le32_to_cpu(ms->m_asts); 129 ms->m_result = from_dlm_errno(le32_to_cpu(ms->m_result)); 130} 131 132void dlm_rcom_out(struct dlm_rcom *rc) 133{ 134 header_out(&rc->rc_header); 135 136 rc->rc_type = cpu_to_le32(rc->rc_type); 137 rc->rc_result = cpu_to_le32(rc->rc_result); 138 rc->rc_id = cpu_to_le64(rc->rc_id); 139 rc->rc_seq = cpu_to_le64(rc->rc_seq); 140 rc->rc_seq_reply = cpu_to_le64(rc->rc_seq_reply); 141} 142 143void dlm_rcom_in(struct dlm_rcom *rc) 144{ 145 header_in(&rc->rc_header); 146 147 rc->rc_type = le32_to_cpu(rc->rc_type); 148 rc->rc_result = le32_to_cpu(rc->rc_result); 149 rc->rc_id = le64_to_cpu(rc->rc_id); 150 rc->rc_seq = le64_to_cpu(rc->rc_seq); 151 rc->rc_seq_reply = le64_to_cpu(rc->rc_seq_reply); 152} 153