libctdb/control.c

   1 /*
   2    Misc control routines of libctdb
   3
   4    Copyright (C) Rusty Russell 2010
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19 #include <string.h>
  20 #include <ctdb.h>
  21 #include <ctdb_protocol.h>
  22 #include "libctdb_private.h"
  23
  24 /* Remove type-safety macros. */
  25 #undef ctdb_getrecmaster_send
  26 #undef ctdb_getrecmode_send
  27 #undef ctdb_getpnn_send
  28 #undef ctdb_check_message_handlers_send
  29 #undef ctdb_getnodemap_send
  30 #undef ctdb_getpublicips_send
  31 #undef ctdb_getdbseqnum_send
  32 #undef ctdb_getifaces_send
  33 #undef ctdb_getvnnmap_send
  34
  35 bool ctdb_getrecmaster_recv(struct ctdb_connection *ctdb,
  36                            struct ctdb_request *req, uint32_t *recmaster)
  37 {
  38         struct ctdb_reply_control *reply;
  39
  40         reply = unpack_reply_control(req, CTDB_CONTROL_GET_RECMASTER);
  41         if (!reply) {
  42                 return false;
  43         }
  44         if (reply->status == -1) {
  45                 DEBUG(ctdb, LOG_ERR, "ctdb_getrecmaster_recv: status -1");
  46                 return false;
  47         }
  48         *recmaster = reply->status;
  49         return true;
  50 }
  51
  52 struct ctdb_request *ctdb_getrecmaster_send(struct ctdb_connection *ctdb,
  53                                             uint32_t destnode,
  54                                             ctdb_callback_t callback,
  55                                             void *private_data)
  56 {
  57         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_RECMASTER,
  58                                         destnode, NULL, 0,
  59                                         callback, private_data);
  60 }
  61
  62 bool ctdb_getrecmode_recv(struct ctdb_connection *ctdb,
  63                           struct ctdb_request *req, uint32_t *recmode)
  64 {
  65         struct ctdb_reply_control *reply;
  66
  67         reply = unpack_reply_control(req, CTDB_CONTROL_GET_RECMODE);
  68         if (!reply) {
  69                 return false;
  70         }
  71         if (reply->status == -1) {
  72                 DEBUG(ctdb, LOG_ERR, "ctdb_getrecmode_recv: status -1");
  73                 return false;
  74         }
  75         *recmode = reply->status;
  76         return true;
  77 }
  78
  79 struct ctdb_request *ctdb_getrecmode_send(struct ctdb_connection *ctdb,
  80                                             uint32_t destnode,
  81                                             ctdb_callback_t callback,
  82                                             void *private_data)
  83 {
  84         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_RECMODE,
  85                                         destnode, NULL, 0,
  86                                         callback, private_data);
  87 }
  88
  89 bool ctdb_getpnn_recv(struct ctdb_connection *ctdb,
  90                      struct ctdb_request *req, uint32_t *pnn)
  91 {
  92         struct ctdb_reply_control *reply;
  93
  94         reply = unpack_reply_control(req, CTDB_CONTROL_GET_PNN);
  95         if (!reply) {
  96                 return false;
  97         }
  98         if (reply->status == -1) {
  99                 DEBUG(ctdb, LOG_ERR, "ctdb_getpnn_recv: status -1");
 100                 return false;
 101         }
 102         *pnn = reply->status;
 103         return true;
 104 }
 105
 106 struct ctdb_request *ctdb_getpnn_send(struct ctdb_connection *ctdb,
 107                                       uint32_t destnode,
 108                                       ctdb_callback_t callback,
 109                                       void *private_data)
 110 {
 111         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_PNN, destnode,
 112                                         NULL, 0, callback, private_data);
 113 }
 114
 115 bool ctdb_getnodemap_recv(struct ctdb_connection *ctdb,
 116                       struct ctdb_request *req, struct ctdb_node_map **nodemap)
 117 {
 118         struct ctdb_reply_control *reply;
 119
 120         *nodemap = NULL;
 121         reply = unpack_reply_control(req, CTDB_CONTROL_GET_NODEMAP);
 122         if (!reply) {
 123                 return false;
 124         }
 125         if (reply->status == -1) {
 126                 DEBUG(ctdb, LOG_ERR, "ctdb_getnodemap_recv: status -1");
 127                 return false;
 128         }
 129         if (reply->datalen == 0) {
 130                 DEBUG(ctdb, LOG_ERR, "ctdb_getnodemap_recv: returned data is 0 bytes");
 131                 return false;
 132         }
 133
 134         *nodemap = malloc(reply->datalen);
 135         if (*nodemap == NULL) {
 136                 DEBUG(ctdb, LOG_ERR, "ctdb_getnodemap_recv: failed to malloc buffer");
 137                 return false;
 138         }
 139         memcpy(*nodemap, reply->data, reply->datalen);
 140
 141         return true;
 142 }
 143 struct ctdb_request *ctdb_getnodemap_send(struct ctdb_connection *ctdb,
 144                                           uint32_t destnode,
 145                                           ctdb_callback_t callback,
 146                                           void *private_data)
 147 {
 148         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_NODEMAP,
 149                                         destnode,
 150                                         NULL, 0, callback, private_data);
 151 }
 152
 153 void ctdb_free_nodemap(struct ctdb_node_map *nodemap)
 154 {
 155         if (nodemap == NULL) {
 156                 return;
 157         }
 158         free(nodemap);
 159 }
 160
 161 bool ctdb_getpublicips_recv(struct ctdb_connection *ctdb,
 162                             struct ctdb_request *req,
 163                             struct ctdb_all_public_ips **ips)
 164 {
 165         struct ctdb_reply_control *reply;
 166
 167         *ips = NULL;
 168         reply = unpack_reply_control(req, CTDB_CONTROL_GET_PUBLIC_IPS);
 169         if (!reply) {
 170                 return false;
 171         }
 172         if (reply->status == -1) {
 173                 DEBUG(ctdb, LOG_ERR, "ctdb_getpublicips_recv: status -1");
 174                 return false;
 175         }
 176         if (reply->datalen == 0) {
 177                 DEBUG(ctdb, LOG_ERR, "ctdb_getpublicips_recv: returned data is 0 bytes");
 178                 return false;
 179         }
 180
 181         *ips = malloc(reply->datalen);
 182         if (*ips == NULL) {
 183                 DEBUG(ctdb, LOG_ERR, "ctdb_getpublicips_recv: failed to malloc buffer");
 184                 return false;
 185         }
 186         memcpy(*ips, reply->data, reply->datalen);
 187
 188         return true;
 189 }
 190 struct ctdb_request *ctdb_getpublicips_send(struct ctdb_connection *ctdb,
 191                                             uint32_t destnode,
 192                                             ctdb_callback_t callback,
 193                                             void *private_data)
 194 {
 195         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_PUBLIC_IPS,
 196                                         destnode,
 197                                         NULL, 0, callback, private_data);
 198 }
 199
 200 void ctdb_free_publicips(struct ctdb_all_public_ips *ips)
 201 {
 202         if (ips == NULL) {
 203                 return;
 204         }
 205         free(ips);
 206 }
 207
 208 bool ctdb_getdbseqnum_recv(struct ctdb_connection *ctdb,
 209                            struct ctdb_request *req, uint64_t *seqnum)
 210 {
 211         struct ctdb_reply_control *reply;
 212
 213         reply = unpack_reply_control(req, CTDB_CONTROL_GET_DB_SEQNUM);
 214         if (!reply) {
 215                 return false;
 216         }
 217         if (reply->status == -1) {
 218                 DEBUG(ctdb, LOG_ERR, "ctdb_getdbseqnum_recv: status -1");
 219                 return false;
 220         }
 221
 222         if (reply->datalen != sizeof(uint64_t)) {
 223                 DEBUG(ctdb, LOG_ERR, "ctdb_getdbseqnum wrong size of data was %d but expected %d bytes", reply->datalen, (int)sizeof(uint64_t));
 224                 return false;
 225         }
 226
 227         *seqnum = *((uint64_t *)reply->data);
 228
 229         return true;
 230 }
 231
 232 struct ctdb_request *ctdb_getdbseqnum_send(struct ctdb_connection *ctdb,
 233                                             uint32_t destnode,
 234                                             uint32_t dbid,
 235                                             ctdb_callback_t callback,
 236                                             void *private_data)
 237 {
 238         uint64_t indata;
 239
 240         *((uint32_t *)&indata) = dbid;
 241
 242         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_DB_SEQNUM,
 243                                         destnode, &indata, sizeof(uint64_t),
 244                                         callback, private_data);
 245 }
 246
 247 bool ctdb_check_message_handlers_recv(struct ctdb_connection *ctdb,
 248                                       struct ctdb_request *req,
 249                                       uint32_t num, uint8_t *result)
 250 {
 251         struct ctdb_reply_control *reply;
 252         int i, count;
 253
 254         reply = unpack_reply_control(req, CTDB_CONTROL_CHECK_SRVIDS);
 255         if (!reply) {
 256                 return false;
 257         }
 258         if (reply->status == -1) {
 259                 DEBUG(ctdb, LOG_ERR, "ctdb_check_message_handlers_recv: status -1");
 260                 return false;
 261         }
 262
 263         count = (num + 7) / 8;
 264         if (count != reply->datalen) {
 265                 DEBUG(ctdb, LOG_ERR, "ctdb_check_message_handlers_recv: wrong amount of data returned, expected %d bytes for %d srvids but received %d bytes", count, num, reply->datalen);
 266                 return false;
 267         }
 268
 269         for (i = 0; i < num; i++) {
 270                 result[i] = !!(reply->data[i / 8] & (1 << (i % 8)));
 271         }
 272
 273         return true;
 274 }
 275
 276 struct ctdb_request *
 277 ctdb_check_message_handlers_send(struct ctdb_connection *ctdb,
 278                                 uint32_t destnode,
 279                                 uint32_t num,
 280                                 uint64_t *mhs,
 281                                 ctdb_callback_t callback,
 282                                 void *private_data)
 283 {
 284         return new_ctdb_control_request(ctdb, CTDB_CONTROL_CHECK_SRVIDS,
 285                                         destnode,
 286                                         mhs, num * sizeof(uint64_t) ,
 287                                         callback, private_data);
 288 }
 289
 290
 291 bool ctdb_getifaces_recv(struct ctdb_connection *ctdb,
 292                          struct ctdb_request *req,
 293                          struct ctdb_ifaces_list **ifaces)
 294 {
 295         struct ctdb_reply_control *reply;
 296         struct ctdb_ifaces_list *ifc;
 297         int i, len;
 298
 299         *ifaces = NULL;
 300         reply = unpack_reply_control(req, CTDB_CONTROL_GET_IFACES);
 301         if (!reply) {
 302                 return false;
 303         }
 304         if (reply->status == -1) {
 305                 DEBUG(ctdb, LOG_ERR, "ctdb_getifaces_recv: status -1");
 306                 return false;
 307         }
 308         if (reply->datalen == 0) {
 309                 DEBUG(ctdb, LOG_ERR, "ctdb_getifaces_recv: returned data is 0 bytes");
 310                 return false;
 311         }
 312
 313         len = offsetof(struct ctdb_ifaces_list, ifaces);
 314         if (len > reply->datalen) {
 315                 DEBUG(ctdb, LOG_ERR, "ctdb_getifaces_recv: returned data is %d bytes but %d is minimum", reply->datalen,  (int)offsetof(struct ctdb_ifaces_list, ifaces));
 316                 return false;
 317         }
 318
 319         ifc = (struct ctdb_ifaces_list *)(reply->data);
 320         len += ifc->num * sizeof(struct ctdb_iface_info);
 321
 322         if (len != reply->datalen) {
 323                 DEBUG(ctdb, LOG_ERR, "ctdb_getifaces_recv: returned data is %d bytes but should be %d", reply->datalen,  len);
 324                 return false;
 325         }
 326
 327         ifc = malloc(reply->datalen);
 328         if (ifc == NULL) {
 329                 DEBUG(ctdb, LOG_ERR, "ctdb_getifaces_recv: failed to malloc buffer");
 330                 return false;
 331         }
 332         memcpy(ifc, reply->data, reply->datalen);
 333
 334         /* make sure we null terminate the returned strings */
 335         for (i = 0; i < ifc->num; i++) {
 336                 ifc->ifaces[i].name[CTDB_IFACE_SIZE] = '\0';
 337         }
 338
 339         *ifaces = ifc;
 340
 341         return true;
 342 }
 343
 344 void ctdb_free_ifaces(struct ctdb_ifaces_list *ifaces)
 345 {
 346         free(ifaces);
 347 }
 348
 349 struct ctdb_request *ctdb_getifaces_send(struct ctdb_connection *ctdb,
 350                                           uint32_t destnode,
 351                                           ctdb_callback_t callback,
 352                                           void *private_data)
 353 {
 354         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_IFACES,
 355                                         destnode,
 356                                         NULL, 0, callback, private_data);
 357 }
 358
 359 bool ctdb_getvnnmap_recv(struct ctdb_connection *ctdb,
 360                          struct ctdb_request *req,
 361                          struct ctdb_vnn_map **vnnmap)
 362 {
 363         struct ctdb_reply_control *reply;
 364         struct ctdb_vnn_map_wire *map;
 365         struct ctdb_vnn_map *tmap;
 366         int len;
 367
 368         *vnnmap = NULL;
 369         reply = unpack_reply_control(req, CTDB_CONTROL_GETVNNMAP);
 370         if (!reply) {
 371                 return false;
 372         }
 373         if (reply->status == -1) {
 374                 DEBUG(ctdb, LOG_ERR, "ctdb_getvnnmap_recv: status -1");
 375                 return false;
 376         }
 377         if (reply->datalen == 0) {
 378                 DEBUG(ctdb, LOG_ERR, "ctdb_getvnnmap_recv: returned data is 0 bytes");
 379                 return false;
 380         }
 381
 382         len = offsetof(struct ctdb_vnn_map_wire, map);
 383         if (len > reply->datalen) {
 384                 DEBUG(ctdb, LOG_ERR, "ctdb_getvnnmap_recv: returned data is %d bytes but %d is minimum", reply->datalen,  (int)offsetof(struct ctdb_vnn_map_wire, map));
 385                 return false;
 386         }
 387
 388         map = (struct ctdb_vnn_map_wire *)(reply->data);
 389         len += map->size * sizeof(uint32_t);
 390
 391         if (len != reply->datalen) {
 392                 DEBUG(ctdb, LOG_ERR, "ctdb_getvnnmap_recv: returned data is %d bytes but should be %d", reply->datalen,  len);
 393                 return false;
 394         }
 395
 396         tmap = malloc(sizeof(struct ctdb_vnn_map));
 397         if (tmap == NULL) {
 398                 DEBUG(ctdb, LOG_ERR, "ctdb_getvnnmap_recv: failed to malloc buffer");
 399                 return false;
 400         }
 401
 402         tmap->generation = map->generation;
 403         tmap->size       = map->size;
 404         tmap->map        = malloc(sizeof(uint32_t) * map->size);
 405         if (tmap->map == NULL) {
 406                 DEBUG(ctdb, LOG_ERR, "ctdb_getvnnmap_recv: failed to malloc buffer");
 407                 free(tmap);
 408                 return false;
 409         }
 410
 411         memcpy(tmap->map, map->map, sizeof(uint32_t)*map->size);
 412
 413         *vnnmap = tmap;
 414
 415         return true;
 416 }
 417
 418 void ctdb_free_vnnmap(struct ctdb_vnn_map *vnnmap)
 419 {
 420         free(vnnmap->map);
 421         free(vnnmap);
 422 }
 423
 424 struct ctdb_request *ctdb_getvnnmap_send(struct ctdb_connection *ctdb,
 425                                          uint32_t destnode,
 426                                          ctdb_callback_t callback,
 427                                          void *private_data)
 428 {
 429         return new_ctdb_control_request(ctdb, CTDB_CONTROL_GETVNNMAP,
 430                                         destnode,
 431                                         NULL, 0, callback, private_data);
 432 }
 433