root/source3/winbindd/winbindd_idmap.c

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DEFINITIONS

This source file includes following definitions.
  1. init_idmap_child
  2. idmap_child
  3. winbindd_set_mapping_recv
  4. winbindd_set_mapping_async
  5. winbindd_dual_set_mapping
  6. winbindd_remove_mapping_recv
  7. winbindd_remove_mapping_async
  8. winbindd_dual_remove_mapping
  9. winbindd_set_hwm_recv
  10. winbindd_set_hwm_async
  11. winbindd_dual_set_hwm
  12. winbindd_sid2uid_recv
  13. winbindd_sid2uid_async
  14. winbindd_dual_sid2uid
  15. winbindd_sid2gid_recv
  16. winbindd_sid2gid_async
  17. winbindd_dual_sid2gid
  18. winbindd_uid2sid_recv
  19. winbindd_uid2sid_async
  20. winbindd_dual_uid2sid
  21. winbindd_gid2sid_recv
  22. winbindd_gid2sid_async
  23. winbindd_dual_gid2sid

   1 /*
   2    Unix SMB/CIFS implementation.
   3 
   4    Async helpers for blocking functions
   5 
   6    Copyright (C) Volker Lendecke 2005
   7    Copyright (C) Gerald Carter 2006
   8    Copyright (C) Simo Sorce 2007
   9 
  10    The helpers always consist of three functions:
  11 
  12    * A request setup function that takes the necessary parameters together
  13      with a continuation function that is to be called upon completion
  14 
  15    * A private continuation function that is internal only. This is to be
  16      called by the lower-level functions in do_async(). Its only task is to
  17      properly call the continuation function named above.
  18 
  19    * A worker function that is called inside the appropriate child process.
  20 
  21    This program is free software; you can redistribute it and/or modify
  22    it under the terms of the GNU General Public License as published by
  23    the Free Software Foundation; either version 3 of the License, or
  24    (at your option) any later version.
  25 
  26    This program is distributed in the hope that it will be useful,
  27    but WITHOUT ANY WARRANTY; without even the implied warranty of
  28    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  29    GNU General Public License for more details.
  30 
  31    You should have received a copy of the GNU General Public License
  32    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  33 */
  34 
  35 #include "includes.h"
  36 #include "winbindd.h"
  37 
  38 #undef DBGC_CLASS
  39 #define DBGC_CLASS DBGC_WINBIND
  40 
  41 static const struct winbindd_child_dispatch_table idmap_dispatch_table[];
  42 
  43 static struct winbindd_child static_idmap_child;
  44 
  45 void init_idmap_child(void)
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  46 {
  47         setup_child(&static_idmap_child,
  48                     idmap_dispatch_table,
  49                     "log.winbindd", "idmap");
  50 }
  51 
  52 struct winbindd_child *idmap_child(void)
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  53 {
  54         return &static_idmap_child;
  55 }
  56 
  57 static void winbindd_set_mapping_recv(TALLOC_CTX *mem_ctx, bool success,
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  58                                    struct winbindd_response *response,
  59                                    void *c, void *private_data)
  60 {
  61         void (*cont)(void *priv, bool succ) = (void (*)(void *, bool))c;
  62 
  63         if (!success) {
  64                 DEBUG(5, ("Could not trigger idmap_set_mapping\n"));
  65                 cont(private_data, False);
  66                 return;
  67         }
  68 
  69         if (response->result != WINBINDD_OK) {
  70                 DEBUG(5, ("idmap_set_mapping returned an error\n"));
  71                 cont(private_data, False);
  72                 return;
  73         }
  74 
  75         cont(private_data, True);
  76 }
  77 
  78 void winbindd_set_mapping_async(TALLOC_CTX *mem_ctx, const struct id_map *map,
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  79                              void (*cont)(void *private_data, bool success),
  80                              void *private_data)
  81 {
  82         struct winbindd_request request;
  83         ZERO_STRUCT(request);
  84         request.cmd = WINBINDD_DUAL_SET_MAPPING;
  85         request.data.dual_idmapset.id = map->xid.id;
  86         request.data.dual_idmapset.type = map->xid.type;
  87         sid_to_fstring(request.data.dual_idmapset.sid, map->sid);
  88 
  89         do_async(mem_ctx, idmap_child(), &request, winbindd_set_mapping_recv,
  90                  (void *)cont, private_data);
  91 }
  92 
  93 enum winbindd_result winbindd_dual_set_mapping(struct winbindd_domain *domain,
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  94                                             struct winbindd_cli_state *state)
  95 {
  96         struct id_map map;
  97         DOM_SID sid;
  98         NTSTATUS result;
  99 
 100         DEBUG(3, ("[%5lu]: dual_idmapset\n", (unsigned long)state->pid));
 101 
 102         if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid))
 103                 return WINBINDD_ERROR;
 104 
 105         map.sid = &sid;
 106         map.xid.id = state->request.data.dual_idmapset.id;
 107         map.xid.type = state->request.data.dual_idmapset.type;
 108         map.status = ID_MAPPED;
 109 
 110         result = idmap_set_mapping(&map);
 111         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 112 }
 113 
 114 static void winbindd_remove_mapping_recv(TALLOC_CTX *mem_ctx, bool success,
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 115                                    struct winbindd_response *response,
 116                                    void *c, void *private_data)
 117 {
 118         void (*cont)(void *priv, bool succ) = (void (*)(void *, bool))c;
 119 
 120         if (!success) {
 121                 DEBUG(5, ("Could not trigger idmap_remove_mapping\n"));
 122                 cont(private_data, False);
 123                 return;
 124         }
 125 
 126         if (response->result != WINBINDD_OK) {
 127                 DEBUG(5, ("idmap_remove_mapping returned an error\n"));
 128                 cont(private_data, False);
 129                 return;
 130         }
 131 
 132         cont(private_data, True);
 133 }
 134 
 135 void winbindd_remove_mapping_async(TALLOC_CTX *mem_ctx,
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 136                              const struct id_map *map,
 137                              void (*cont)(void *private_data, bool success),
 138                              void *private_data)
 139 {
 140         struct winbindd_request request;
 141         ZERO_STRUCT(request);
 142         request.cmd = WINBINDD_DUAL_REMOVE_MAPPING;
 143         request.data.dual_idmapset.id = map->xid.id;
 144         request.data.dual_idmapset.type = map->xid.type;
 145         sid_to_fstring(request.data.dual_idmapset.sid, map->sid);
 146 
 147         do_async(mem_ctx, idmap_child(), &request, winbindd_remove_mapping_recv,
 148                  (void *)cont, private_data);
 149 }
 150 
 151 enum winbindd_result winbindd_dual_remove_mapping(
     /* [<][>][^][v][top][bottom][index][help] */
 152                                             struct winbindd_domain *domain,
 153                                             struct winbindd_cli_state *state)
 154 {
 155         struct id_map map;
 156         DOM_SID sid;
 157         NTSTATUS result;
 158 
 159         DEBUG(3, ("[%5lu]: dual_idmapremove\n", (unsigned long)state->pid));
 160 
 161         if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid))
 162                 return WINBINDD_ERROR;
 163 
 164         map.sid = &sid;
 165         map.xid.id = state->request.data.dual_idmapset.id;
 166         map.xid.type = state->request.data.dual_idmapset.type;
 167         map.status = ID_MAPPED;
 168 
 169         result = idmap_remove_mapping(&map);
 170         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 171 }
 172 
 173 static void winbindd_set_hwm_recv(TALLOC_CTX *mem_ctx, bool success,
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 174                                    struct winbindd_response *response,
 175                                    void *c, void *private_data)
 176 {
 177         void (*cont)(void *priv, bool succ) = (void (*)(void *, bool))c;
 178 
 179         if (!success) {
 180                 DEBUG(5, ("Could not trigger idmap_set_hwm\n"));
 181                 cont(private_data, False);
 182                 return;
 183         }
 184 
 185         if (response->result != WINBINDD_OK) {
 186                 DEBUG(5, ("idmap_set_hwm returned an error\n"));
 187                 cont(private_data, False);
 188                 return;
 189         }
 190 
 191         cont(private_data, True);
 192 }
 193 
 194 void winbindd_set_hwm_async(TALLOC_CTX *mem_ctx, const struct unixid *xid,
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 195                              void (*cont)(void *private_data, bool success),
 196                              void *private_data)
 197 {
 198         struct winbindd_request request;
 199         ZERO_STRUCT(request);
 200         request.cmd = WINBINDD_DUAL_SET_HWM;
 201         request.data.dual_idmapset.id = xid->id;
 202         request.data.dual_idmapset.type = xid->type;
 203 
 204         do_async(mem_ctx, idmap_child(), &request, winbindd_set_hwm_recv,
 205                  (void *)cont, private_data);
 206 }
 207 
 208 enum winbindd_result winbindd_dual_set_hwm(struct winbindd_domain *domain,
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 209                                             struct winbindd_cli_state *state)
 210 {
 211         struct unixid xid;
 212         NTSTATUS result;
 213 
 214         DEBUG(3, ("[%5lu]: dual_set_hwm\n", (unsigned long)state->pid));
 215 
 216         xid.id = state->request.data.dual_idmapset.id;
 217         xid.type = state->request.data.dual_idmapset.type;
 218 
 219         switch (xid.type) {
 220         case ID_TYPE_UID:
 221                 result = idmap_set_uid_hwm(&xid);
 222                 break;
 223         case ID_TYPE_GID:
 224                 result = idmap_set_gid_hwm(&xid);
 225                 break;
 226         default:
 227                 return WINBINDD_ERROR;
 228         }
 229         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 230 }
 231 
 232 static void winbindd_sid2uid_recv(TALLOC_CTX *mem_ctx, bool success,
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 233                                struct winbindd_response *response,
 234                                void *c, void *private_data)
 235 {
 236         void (*cont)(void *priv, bool succ, uid_t uid) =
 237                 (void (*)(void *, bool, uid_t))c;
 238 
 239         if (!success) {
 240                 DEBUG(5, ("Could not trigger sid2uid\n"));
 241                 cont(private_data, False, 0);
 242                 return;
 243         }
 244 
 245         if (response->result != WINBINDD_OK) {
 246                 DEBUG(5, ("sid2uid returned an error\n"));
 247                 cont(private_data, False, 0);
 248                 return;
 249         }
 250 
 251         cont(private_data, True, response->data.uid);
 252 }
 253 
 254 void winbindd_sid2uid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
     /* [<][>][^][v][top][bottom][index][help] */
 255                          void (*cont)(void *private_data, bool success, uid_t uid),
 256                          void *private_data)
 257 {
 258         struct winbindd_request request;
 259         struct winbindd_domain *domain;
 260 
 261         ZERO_STRUCT(request);
 262         request.cmd = WINBINDD_DUAL_SID2UID;
 263 
 264         domain = find_domain_from_sid(sid);
 265 
 266         if (domain != NULL) {
 267                 DEBUG(10, ("winbindd_sid2uid_async found domain %s, "
 268                            "have_idmap_config = %d\n", domain->name,
 269                            (int)domain->have_idmap_config));
 270 
 271         }
 272         else {
 273                 DEBUG(10, ("winbindd_sid2uid_async did not find a domain for "
 274                            "%s\n", sid_string_dbg(sid)));
 275         }
 276 
 277         if ((domain != NULL) && (domain->have_idmap_config)) {
 278                 fstrcpy(request.domain_name, domain->name);
 279         }
 280 
 281         sid_to_fstring(request.data.dual_sid2id.sid, sid);
 282         do_async(mem_ctx, idmap_child(), &request, winbindd_sid2uid_recv,
 283                  (void *)cont, private_data);
 284 }
 285 
 286 enum winbindd_result winbindd_dual_sid2uid(struct winbindd_domain *domain,
     /* [<][>][^][v][top][bottom][index][help] */
 287                                            struct winbindd_cli_state *state)
 288 {
 289         DOM_SID sid;
 290         NTSTATUS result;
 291 
 292         DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
 293                   state->request.data.dual_sid2id.sid));
 294 
 295         if (!string_to_sid(&sid, state->request.data.dual_sid2id.sid)) {
 296                 DEBUG(1, ("Could not get convert sid %s from string\n",
 297                           state->request.data.dual_sid2id.sid));
 298                 return WINBINDD_ERROR;
 299         }
 300 
 301         result = idmap_sid_to_uid(state->request.domain_name, &sid,
 302                                   &state->response.data.uid);
 303 
 304         DEBUG(10, ("winbindd_dual_sid2uid: 0x%08x - %s - %u\n",
 305                    NT_STATUS_V(result), sid_string_dbg(&sid),
 306                    (unsigned int)state->response.data.uid));
 307 
 308         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 309 }
 310 
 311 static void winbindd_sid2gid_recv(TALLOC_CTX *mem_ctx, bool success,
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 312                                struct winbindd_response *response,
 313                                void *c, void *private_data)
 314 {
 315         void (*cont)(void *priv, bool succ, gid_t gid) =
 316                 (void (*)(void *, bool, gid_t))c;
 317 
 318         if (!success) {
 319                 DEBUG(5, ("Could not trigger sid2gid\n"));
 320                 cont(private_data, False, 0);
 321                 return;
 322         }
 323 
 324         if (response->result != WINBINDD_OK) {
 325                 DEBUG(5, ("sid2gid returned an error\n"));
 326                 cont(private_data, False, 0);
 327                 return;
 328         }
 329 
 330         cont(private_data, True, response->data.gid);
 331 }
 332 
 333 void winbindd_sid2gid_async(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
     /* [<][>][^][v][top][bottom][index][help] */
 334                          void (*cont)(void *private_data, bool success, gid_t gid),
 335                          void *private_data)
 336 {
 337         struct winbindd_request request;
 338         struct winbindd_domain *domain;
 339 
 340         ZERO_STRUCT(request);
 341         request.cmd = WINBINDD_DUAL_SID2GID;
 342 
 343         domain = find_domain_from_sid(sid);
 344         if ((domain != NULL) && (domain->have_idmap_config)) {
 345                 fstrcpy(request.domain_name, domain->name);
 346         }
 347 
 348         sid_to_fstring(request.data.dual_sid2id.sid, sid);
 349 
 350         DEBUG(7,("winbindd_sid2gid_async: Resolving %s to a gid\n",
 351                 request.data.dual_sid2id.sid));
 352 
 353         do_async(mem_ctx, idmap_child(), &request, winbindd_sid2gid_recv,
 354                  (void *)cont, private_data);
 355 }
 356 
 357 enum winbindd_result winbindd_dual_sid2gid(struct winbindd_domain *domain,
     /* [<][>][^][v][top][bottom][index][help] */
 358                                            struct winbindd_cli_state *state)
 359 {
 360         DOM_SID sid;
 361         NTSTATUS result;
 362 
 363         DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
 364                   state->request.data.dual_sid2id.sid));
 365 
 366         if (!string_to_sid(&sid, state->request.data.dual_sid2id.sid)) {
 367                 DEBUG(1, ("Could not get convert sid %s from string\n",
 368                           state->request.data.dual_sid2id.sid));
 369                 return WINBINDD_ERROR;
 370         }
 371 
 372         /* Find gid for this sid and return it, possibly ask the slow remote idmap */
 373 
 374         result = idmap_sid_to_gid(state->request.domain_name, &sid,
 375                                   &state->response.data.gid);
 376 
 377         DEBUG(10, ("winbindd_dual_sid2gid: 0x%08x - %s - %u\n",
 378                    NT_STATUS_V(result), sid_string_dbg(&sid),
 379                    (unsigned int)state->response.data.gid));
 380 
 381         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 382 }
 383 
 384 /* The following uid2sid/gid2sid functions has been contributed by
 385  * Keith Reynolds <Keith.Reynolds@centrify.com> */
 386 
 387 static void winbindd_uid2sid_recv(TALLOC_CTX *mem_ctx, bool success,
     /* [<][>][^][v][top][bottom][index][help] */
 388                                   struct winbindd_response *response,
 389                                   void *c, void *private_data)
 390 {
 391         void (*cont)(void *priv, bool succ, const char *sid) =
 392                 (void (*)(void *, bool, const char *))c;
 393 
 394         if (!success) {
 395                 DEBUG(5, ("Could not trigger uid2sid\n"));
 396                 cont(private_data, False, NULL);
 397                 return;
 398         }
 399 
 400         if (response->result != WINBINDD_OK) {
 401                 DEBUG(5, ("uid2sid returned an error\n"));
 402                 cont(private_data, False, NULL);
 403                 return;
 404         }
 405 
 406         cont(private_data, True, response->data.sid.sid);
 407 }
 408 
 409 void winbindd_uid2sid_async(TALLOC_CTX *mem_ctx, uid_t uid,
     /* [<][>][^][v][top][bottom][index][help] */
 410                             void (*cont)(void *private_data, bool success, const char *sid),
 411                             void *private_data)
 412 {
 413         struct winbindd_domain *domain;
 414         struct winbindd_request request;
 415 
 416         ZERO_STRUCT(request);
 417         request.cmd = WINBINDD_DUAL_UID2SID;
 418         request.data.uid = uid;
 419 
 420         for (domain = domain_list(); domain != NULL; domain = domain->next) {
 421                 if (domain->have_idmap_config
 422                     && (uid >= domain->id_range_low)
 423                     && (uid <= domain->id_range_high)) {
 424                         fstrcpy(request.domain_name, domain->name);
 425                 }
 426         }
 427 
 428         do_async(mem_ctx, idmap_child(), &request, winbindd_uid2sid_recv,
 429                  (void *)cont, private_data);
 430 }
 431 
 432 enum winbindd_result winbindd_dual_uid2sid(struct winbindd_domain *domain,
     /* [<][>][^][v][top][bottom][index][help] */
 433                                            struct winbindd_cli_state *state)
 434 {
 435         DOM_SID sid;
 436         NTSTATUS result;
 437 
 438         DEBUG(3,("[%5lu]: uid to sid %lu\n",
 439                  (unsigned long)state->pid,
 440                  (unsigned long) state->request.data.uid));
 441 
 442         /* Find sid for this uid and return it, possibly ask the slow remote idmap */
 443         result = idmap_uid_to_sid(state->request.domain_name, &sid,
 444                                   state->request.data.uid);
 445 
 446         if (NT_STATUS_IS_OK(result)) {
 447                 sid_to_fstring(state->response.data.sid.sid, &sid);
 448                 state->response.data.sid.type = SID_NAME_USER;
 449                 return WINBINDD_OK;
 450         }
 451 
 452         return WINBINDD_ERROR;
 453 }
 454 
 455 static void winbindd_gid2sid_recv(TALLOC_CTX *mem_ctx, bool success,
     /* [<][>][^][v][top][bottom][index][help] */
 456                                   struct winbindd_response *response,
 457                                   void *c, void *private_data)
 458 {
 459         void (*cont)(void *priv, bool succ, const char *sid) =
 460                 (void (*)(void *, bool, const char *))c;
 461 
 462         if (!success) {
 463                 DEBUG(5, ("Could not trigger gid2sid\n"));
 464                 cont(private_data, False, NULL);
 465                 return;
 466         }
 467 
 468         if (response->result != WINBINDD_OK) {
 469                 DEBUG(5, ("gid2sid returned an error\n"));
 470                 cont(private_data, False, NULL);
 471                 return;
 472         }
 473 
 474         cont(private_data, True, response->data.sid.sid);
 475 }
 476 
 477 void winbindd_gid2sid_async(TALLOC_CTX *mem_ctx, gid_t gid,
     /* [<][>][^][v][top][bottom][index][help] */
 478                             void (*cont)(void *private_data, bool success, const char *sid),
 479                             void *private_data)
 480 {
 481         struct winbindd_domain *domain;
 482         struct winbindd_request request;
 483 
 484         ZERO_STRUCT(request);
 485         request.cmd = WINBINDD_DUAL_GID2SID;
 486         request.data.gid = gid;
 487 
 488         for (domain = domain_list(); domain != NULL; domain = domain->next) {
 489                 if (domain->have_idmap_config
 490                     && (gid >= domain->id_range_low)
 491                     && (gid <= domain->id_range_high)) {
 492                         fstrcpy(request.domain_name, domain->name);
 493                 }
 494         }
 495 
 496         do_async(mem_ctx, idmap_child(), &request, winbindd_gid2sid_recv,
 497                  (void *)cont, private_data);
 498 }
 499 
 500 enum winbindd_result winbindd_dual_gid2sid(struct winbindd_domain *domain,
     /* [<][>][^][v][top][bottom][index][help] */
 501                                            struct winbindd_cli_state *state)
 502 {
 503         DOM_SID sid;
 504         NTSTATUS result;
 505 
 506         DEBUG(3,("[%5lu]: gid %lu to sid\n",
 507                 (unsigned long)state->pid,
 508                 (unsigned long) state->request.data.gid));
 509 
 510         /* Find sid for this gid and return it, possibly ask the slow remote idmap */
 511         result = idmap_gid_to_sid(state->request.domain_name, &sid,
 512                                   state->request.data.gid);
 513 
 514         if (NT_STATUS_IS_OK(result)) {
 515                 sid_to_fstring(state->response.data.sid.sid, &sid);
 516                 DEBUG(10, ("[%5lu]: retrieved sid: %s\n",
 517                            (unsigned long)state->pid,
 518                            state->response.data.sid.sid));
 519                 state->response.data.sid.type = SID_NAME_DOM_GRP;
 520                 return WINBINDD_OK;
 521         }
 522 
 523         return WINBINDD_ERROR;
 524 }
 525 
 526 static const struct winbindd_child_dispatch_table idmap_dispatch_table[] = {
 527         {
 528                 .name           = "DUAL_SID2UID",
 529                 .struct_cmd     = WINBINDD_DUAL_SID2UID,
 530                 .struct_fn      = winbindd_dual_sid2uid,
 531         },{
 532                 .name           = "DUAL_SID2GID",
 533                 .struct_cmd     = WINBINDD_DUAL_SID2GID,
 534                 .struct_fn      = winbindd_dual_sid2gid,
 535         },{
 536                 .name           = "DUAL_UID2SID",
 537                 .struct_cmd     = WINBINDD_DUAL_UID2SID,
 538                 .struct_fn      = winbindd_dual_uid2sid,
 539         },{
 540                 .name           = "DUAL_GID2SID",
 541                 .struct_cmd     = WINBINDD_DUAL_GID2SID,
 542                 .struct_fn      = winbindd_dual_gid2sid,
 543         },{
 544                 .name           = "DUAL_SET_MAPPING",
 545                 .struct_cmd     = WINBINDD_DUAL_SET_MAPPING,
 546                 .struct_fn      = winbindd_dual_set_mapping,
 547         },{
 548                 .name           = "DUAL_REMOVE_MAPPING",
 549                 .struct_cmd     = WINBINDD_DUAL_REMOVE_MAPPING,
 550                 .struct_fn      = winbindd_dual_remove_mapping,
 551         },{
 552                 .name           = "DUAL_SET_HWMS",
 553                 .struct_cmd     = WINBINDD_DUAL_SET_HWM,
 554                 .struct_fn      = winbindd_dual_set_hwm,
 555         },{
 556                 .name           = "ALLOCATE_UID",
 557                 .struct_cmd     = WINBINDD_ALLOCATE_UID,
 558                 .struct_fn      = winbindd_dual_allocate_uid,
 559         },{
 560                 .name           = "ALLOCATE_GID",
 561                 .struct_cmd     = WINBINDD_ALLOCATE_GID,
 562                 .struct_fn      = winbindd_dual_allocate_gid,
 563         },{
 564                 .name           = NULL,
 565         }
 566 };

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