David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 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 | |
David Teigland | 861e2369 | 2008-01-15 15:43:24 -0600 | [diff] [blame^] | 17 | #define DLM_ERRNO_EDEADLK 35 |
| 18 | #define DLM_ERRNO_EBADR 53 |
| 19 | #define DLM_ERRNO_EBADSLT 57 |
| 20 | #define DLM_ERRNO_EPROTO 71 |
| 21 | #define DLM_ERRNO_EOPNOTSUPP 95 |
| 22 | #define DLM_ERRNO_ETIMEDOUT 110 |
| 23 | #define DLM_ERRNO_EINPROGRESS 115 |
| 24 | |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 25 | static void header_out(struct dlm_header *hd) |
| 26 | { |
| 27 | hd->h_version = cpu_to_le32(hd->h_version); |
| 28 | hd->h_lockspace = cpu_to_le32(hd->h_lockspace); |
| 29 | hd->h_nodeid = cpu_to_le32(hd->h_nodeid); |
| 30 | hd->h_length = cpu_to_le16(hd->h_length); |
| 31 | } |
| 32 | |
| 33 | static void header_in(struct dlm_header *hd) |
| 34 | { |
| 35 | hd->h_version = le32_to_cpu(hd->h_version); |
| 36 | hd->h_lockspace = le32_to_cpu(hd->h_lockspace); |
| 37 | hd->h_nodeid = le32_to_cpu(hd->h_nodeid); |
| 38 | hd->h_length = le16_to_cpu(hd->h_length); |
| 39 | } |
| 40 | |
David Teigland | 861e2369 | 2008-01-15 15:43:24 -0600 | [diff] [blame^] | 41 | /* higher errno values are inconsistent across architectures, so select |
| 42 | one set of values for on the wire */ |
| 43 | |
| 44 | static int to_dlm_errno(int err) |
| 45 | { |
| 46 | switch (err) { |
| 47 | case -EDEADLK: |
| 48 | return -DLM_ERRNO_EDEADLK; |
| 49 | case -EBADR: |
| 50 | return -DLM_ERRNO_EBADR; |
| 51 | case -EBADSLT: |
| 52 | return -DLM_ERRNO_EBADSLT; |
| 53 | case -EPROTO: |
| 54 | return -DLM_ERRNO_EPROTO; |
| 55 | case -EOPNOTSUPP: |
| 56 | return -DLM_ERRNO_EOPNOTSUPP; |
| 57 | case -ETIMEDOUT: |
| 58 | return -DLM_ERRNO_ETIMEDOUT; |
| 59 | case -EINPROGRESS: |
| 60 | return -DLM_ERRNO_EINPROGRESS; |
| 61 | } |
| 62 | return err; |
| 63 | } |
| 64 | |
| 65 | static int from_dlm_errno(int err) |
| 66 | { |
| 67 | switch (err) { |
| 68 | case -DLM_ERRNO_EDEADLK: |
| 69 | return -EDEADLK; |
| 70 | case -DLM_ERRNO_EBADR: |
| 71 | return -EBADR; |
| 72 | case -DLM_ERRNO_EBADSLT: |
| 73 | return -EBADSLT; |
| 74 | case -DLM_ERRNO_EPROTO: |
| 75 | return -EPROTO; |
| 76 | case -DLM_ERRNO_EOPNOTSUPP: |
| 77 | return -EOPNOTSUPP; |
| 78 | case -DLM_ERRNO_ETIMEDOUT: |
| 79 | return -ETIMEDOUT; |
| 80 | case -DLM_ERRNO_EINPROGRESS: |
| 81 | return -EINPROGRESS; |
| 82 | } |
| 83 | return err; |
| 84 | } |
| 85 | |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 86 | void dlm_message_out(struct dlm_message *ms) |
| 87 | { |
| 88 | struct dlm_header *hd = (struct dlm_header *) ms; |
| 89 | |
| 90 | header_out(hd); |
| 91 | |
| 92 | ms->m_type = cpu_to_le32(ms->m_type); |
| 93 | ms->m_nodeid = cpu_to_le32(ms->m_nodeid); |
| 94 | ms->m_pid = cpu_to_le32(ms->m_pid); |
| 95 | ms->m_lkid = cpu_to_le32(ms->m_lkid); |
| 96 | ms->m_remid = cpu_to_le32(ms->m_remid); |
| 97 | ms->m_parent_lkid = cpu_to_le32(ms->m_parent_lkid); |
| 98 | ms->m_parent_remid = cpu_to_le32(ms->m_parent_remid); |
| 99 | ms->m_exflags = cpu_to_le32(ms->m_exflags); |
| 100 | ms->m_sbflags = cpu_to_le32(ms->m_sbflags); |
| 101 | ms->m_flags = cpu_to_le32(ms->m_flags); |
| 102 | ms->m_lvbseq = cpu_to_le32(ms->m_lvbseq); |
| 103 | ms->m_hash = cpu_to_le32(ms->m_hash); |
| 104 | ms->m_status = cpu_to_le32(ms->m_status); |
| 105 | ms->m_grmode = cpu_to_le32(ms->m_grmode); |
| 106 | ms->m_rqmode = cpu_to_le32(ms->m_rqmode); |
| 107 | ms->m_bastmode = cpu_to_le32(ms->m_bastmode); |
| 108 | ms->m_asts = cpu_to_le32(ms->m_asts); |
David Teigland | 861e2369 | 2008-01-15 15:43:24 -0600 | [diff] [blame^] | 109 | ms->m_result = cpu_to_le32(to_dlm_errno(ms->m_result)); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | void dlm_message_in(struct dlm_message *ms) |
| 113 | { |
| 114 | struct dlm_header *hd = (struct dlm_header *) ms; |
| 115 | |
| 116 | header_in(hd); |
| 117 | |
| 118 | ms->m_type = le32_to_cpu(ms->m_type); |
| 119 | ms->m_nodeid = le32_to_cpu(ms->m_nodeid); |
| 120 | ms->m_pid = le32_to_cpu(ms->m_pid); |
| 121 | ms->m_lkid = le32_to_cpu(ms->m_lkid); |
| 122 | ms->m_remid = le32_to_cpu(ms->m_remid); |
| 123 | ms->m_parent_lkid = le32_to_cpu(ms->m_parent_lkid); |
| 124 | ms->m_parent_remid = le32_to_cpu(ms->m_parent_remid); |
| 125 | ms->m_exflags = le32_to_cpu(ms->m_exflags); |
| 126 | ms->m_sbflags = le32_to_cpu(ms->m_sbflags); |
| 127 | ms->m_flags = le32_to_cpu(ms->m_flags); |
| 128 | ms->m_lvbseq = le32_to_cpu(ms->m_lvbseq); |
| 129 | ms->m_hash = le32_to_cpu(ms->m_hash); |
| 130 | ms->m_status = le32_to_cpu(ms->m_status); |
| 131 | ms->m_grmode = le32_to_cpu(ms->m_grmode); |
| 132 | ms->m_rqmode = le32_to_cpu(ms->m_rqmode); |
| 133 | ms->m_bastmode = le32_to_cpu(ms->m_bastmode); |
| 134 | ms->m_asts = le32_to_cpu(ms->m_asts); |
David Teigland | 861e2369 | 2008-01-15 15:43:24 -0600 | [diff] [blame^] | 135 | ms->m_result = from_dlm_errno(le32_to_cpu(ms->m_result)); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | static void rcom_lock_out(struct rcom_lock *rl) |
| 139 | { |
| 140 | rl->rl_ownpid = cpu_to_le32(rl->rl_ownpid); |
| 141 | rl->rl_lkid = cpu_to_le32(rl->rl_lkid); |
| 142 | rl->rl_remid = cpu_to_le32(rl->rl_remid); |
| 143 | rl->rl_parent_lkid = cpu_to_le32(rl->rl_parent_lkid); |
| 144 | rl->rl_parent_remid = cpu_to_le32(rl->rl_parent_remid); |
| 145 | rl->rl_exflags = cpu_to_le32(rl->rl_exflags); |
| 146 | rl->rl_flags = cpu_to_le32(rl->rl_flags); |
| 147 | rl->rl_lvbseq = cpu_to_le32(rl->rl_lvbseq); |
| 148 | rl->rl_result = cpu_to_le32(rl->rl_result); |
| 149 | rl->rl_wait_type = cpu_to_le16(rl->rl_wait_type); |
| 150 | rl->rl_namelen = cpu_to_le16(rl->rl_namelen); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | static void rcom_lock_in(struct rcom_lock *rl) |
| 154 | { |
| 155 | rl->rl_ownpid = le32_to_cpu(rl->rl_ownpid); |
| 156 | rl->rl_lkid = le32_to_cpu(rl->rl_lkid); |
| 157 | rl->rl_remid = le32_to_cpu(rl->rl_remid); |
| 158 | rl->rl_parent_lkid = le32_to_cpu(rl->rl_parent_lkid); |
| 159 | rl->rl_parent_remid = le32_to_cpu(rl->rl_parent_remid); |
| 160 | rl->rl_exflags = le32_to_cpu(rl->rl_exflags); |
| 161 | rl->rl_flags = le32_to_cpu(rl->rl_flags); |
| 162 | rl->rl_lvbseq = le32_to_cpu(rl->rl_lvbseq); |
| 163 | rl->rl_result = le32_to_cpu(rl->rl_result); |
| 164 | rl->rl_wait_type = le16_to_cpu(rl->rl_wait_type); |
| 165 | rl->rl_namelen = le16_to_cpu(rl->rl_namelen); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | static void rcom_config_out(struct rcom_config *rf) |
| 169 | { |
| 170 | rf->rf_lvblen = cpu_to_le32(rf->rf_lvblen); |
| 171 | rf->rf_lsflags = cpu_to_le32(rf->rf_lsflags); |
| 172 | } |
| 173 | |
| 174 | static void rcom_config_in(struct rcom_config *rf) |
| 175 | { |
| 176 | rf->rf_lvblen = le32_to_cpu(rf->rf_lvblen); |
| 177 | rf->rf_lsflags = le32_to_cpu(rf->rf_lsflags); |
| 178 | } |
| 179 | |
| 180 | void dlm_rcom_out(struct dlm_rcom *rc) |
| 181 | { |
| 182 | struct dlm_header *hd = (struct dlm_header *) rc; |
| 183 | int type = rc->rc_type; |
| 184 | |
| 185 | header_out(hd); |
| 186 | |
| 187 | rc->rc_type = cpu_to_le32(rc->rc_type); |
| 188 | rc->rc_result = cpu_to_le32(rc->rc_result); |
| 189 | rc->rc_id = cpu_to_le64(rc->rc_id); |
David Teigland | 38aa8b0 | 2006-12-13 10:37:16 -0600 | [diff] [blame] | 190 | rc->rc_seq = cpu_to_le64(rc->rc_seq); |
| 191 | rc->rc_seq_reply = cpu_to_le64(rc->rc_seq_reply); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 192 | |
Fabio M. Di Nitto | 550283e | 2008-01-15 15:13:36 -0600 | [diff] [blame] | 193 | if ((type == DLM_RCOM_LOCK) || (type == DLM_RCOM_LOCK_REPLY)) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 194 | rcom_lock_out((struct rcom_lock *) rc->rc_buf); |
| 195 | |
| 196 | else if (type == DLM_RCOM_STATUS_REPLY) |
| 197 | rcom_config_out((struct rcom_config *) rc->rc_buf); |
| 198 | } |
| 199 | |
| 200 | void dlm_rcom_in(struct dlm_rcom *rc) |
| 201 | { |
| 202 | struct dlm_header *hd = (struct dlm_header *) rc; |
Fabio M. Di Nitto | 550283e | 2008-01-15 15:13:36 -0600 | [diff] [blame] | 203 | int type; |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 204 | |
| 205 | header_in(hd); |
| 206 | |
| 207 | rc->rc_type = le32_to_cpu(rc->rc_type); |
| 208 | rc->rc_result = le32_to_cpu(rc->rc_result); |
| 209 | rc->rc_id = le64_to_cpu(rc->rc_id); |
David Teigland | 38aa8b0 | 2006-12-13 10:37:16 -0600 | [diff] [blame] | 210 | rc->rc_seq = le64_to_cpu(rc->rc_seq); |
| 211 | rc->rc_seq_reply = le64_to_cpu(rc->rc_seq_reply); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 212 | |
Fabio M. Di Nitto | 550283e | 2008-01-15 15:13:36 -0600 | [diff] [blame] | 213 | type = rc->rc_type; |
| 214 | |
| 215 | if ((type == DLM_RCOM_LOCK) || (type == DLM_RCOM_LOCK_REPLY)) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 216 | rcom_lock_in((struct rcom_lock *) rc->rc_buf); |
| 217 | |
Fabio M. Di Nitto | 550283e | 2008-01-15 15:13:36 -0600 | [diff] [blame] | 218 | else if (type == DLM_RCOM_STATUS_REPLY) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 219 | rcom_config_in((struct rcom_config *) rc->rc_buf); |
| 220 | } |
| 221 | |