source3/modules/nfs4_acls.c

   1 /*
   2  * NFS4 ACL handling
   3  *
   4  * Copyright (C) Jim McDonough, 2006
   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 2 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, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "includes.h"
  22 #include "nfs4_acls.h"
  23
  24 #define SMBACL4_PARAM_TYPE_NAME "nfs4"
  25
  26 #define SMB_ACE4_INT_MAGIC 0x76F8A967
  27 typedef struct _SMB_ACE4_INT_T
  28 {
  29         uint32  magic;
  30         SMB_ACE4PROP_T  prop;
  31         void    *next;
  32 } SMB_ACE4_INT_T;
  33
  34 #define SMB_ACL4_INT_MAGIC 0x29A3E792
  35 typedef struct _SMB_ACL4_INT_T
  36 {
  37         uint32  magic;
  38         uint32  naces;
  39         SMB_ACE4_INT_T  *first;
  40         SMB_ACE4_INT_T  *last;
  41 } SMB_ACL4_INT_T;
  42
  43 extern struct current_user current_user;
  44 extern int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid);
  45 extern BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp,
  46         uint32 security_info_sent, SEC_DESC *psd);
  47
  48 static SMB_ACL4_INT_T *get_validated_aclint(SMB4ACL_T *acl)
  49 {
  50         SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
  51         if (acl==NULL)
  52         {
  53                 DEBUG(2, ("acl is NULL\n"));
  54                 errno = EINVAL;
  55                 return NULL;
  56         }
  57         if (aclint->magic!=SMB_ACL4_INT_MAGIC)
  58         {
  59                 DEBUG(2, ("aclint bad magic 0x%x\n", aclint->magic));
  60                 errno = EINVAL;
  61                 return NULL;
  62         }
  63         return aclint;
  64 }
  65
  66 static SMB_ACE4_INT_T *get_validated_aceint(SMB4ACE_T *ace)
  67 {
  68         SMB_ACE4_INT_T *aceint = (SMB_ACE4_INT_T *)ace;
  69         if (ace==NULL)
  70         {
  71                 DEBUG(2, ("ace is NULL\n"));
  72                 errno = EINVAL;
  73                 return NULL;
  74         }
  75         if (aceint->magic!=SMB_ACE4_INT_MAGIC)
  76         {
  77                 DEBUG(2, ("aceint bad magic 0x%x\n", aceint->magic));
  78                 errno = EINVAL;
  79                 return NULL;
  80         }
  81         return aceint;
  82 }
  83
  84 SMB4ACL_T *smb_create_smb4acl(void)
  85 {
  86         TALLOC_CTX *mem_ctx = main_loop_talloc_get();
  87         SMB_ACL4_INT_T  *acl = (SMB_ACL4_INT_T *)talloc_size(mem_ctx, sizeof(SMB_ACL4_INT_T));
  88         if (acl==NULL)
  89         {
  90                 DEBUG(0, ("talloc_size failed\n"));
  91                 errno = ENOMEM;
  92                 return NULL;
  93         }
  94         memset(acl, 0, sizeof(SMB_ACL4_INT_T));
  95         acl->magic = SMB_ACL4_INT_MAGIC;
  96         /* acl->first, last = NULL not needed */
  97         return (SMB4ACL_T *)acl;
  98 }
  99
 100 SMB4ACE_T *smb_add_ace4(SMB4ACL_T *acl, SMB_ACE4PROP_T *prop)
 101 {
 102         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 103         TALLOC_CTX *mem_ctx = main_loop_talloc_get();
 104         SMB_ACE4_INT_T *ace;
 105
 106         ace = (SMB_ACE4_INT_T *)talloc_size(mem_ctx, sizeof(SMB_ACE4_INT_T));
 107         if (ace==NULL)
 108         {
 109                 DEBUG(0, ("talloc_size failed\n"));
 110                 errno = ENOMEM;
 111                 return NULL;
 112         }
 113         memset(ace, 0, sizeof(SMB_ACE4_INT_T));
 114         ace->magic = SMB_ACE4_INT_MAGIC;
 115         /* ace->next = NULL not needed */
 116         memcpy(&ace->prop, prop, sizeof(SMB_ACE4PROP_T));
 117
 118         if (aclint->first==NULL)
 119         {
 120                 aclint->first = ace;
 121                 aclint->last = ace;
 122         } else {
 123                 aclint->last->next = (void *)ace;
 124                 aclint->last = ace;
 125         }
 126         aclint->naces++;
 127
 128         return (SMB4ACE_T *)ace;
 129 }
 130
 131 SMB_ACE4PROP_T *smb_get_ace4(SMB4ACE_T *ace)
 132 {
 133         SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
 134         if (aceint==NULL)
 135                 return NULL;
 136
 137         return &aceint->prop;
 138 }
 139
 140 SMB4ACE_T *smb_next_ace4(SMB4ACE_T *ace)
 141 {
 142         SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
 143         if (aceint==NULL)
 144                 return NULL;
 145
 146         return (SMB4ACE_T *)aceint->next;
 147 }
 148
 149 SMB4ACE_T *smb_first_ace4(SMB4ACL_T *acl)
 150 {
 151         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 152         if (aclint==NULL)
 153                 return NULL;
 154
 155         return (SMB4ACE_T *)aclint->first;
 156 }
 157
 158 uint32 smb_get_naces(SMB4ACL_T *acl)
 159 {
 160         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 161         if (aclint==NULL)
 162                 return 0;
 163
 164         return aclint->naces;
 165 }
 166
 167 static int smbacl4_GetFileOwner(files_struct *fsp, SMB_STRUCT_STAT *psbuf)
 168 {
 169         memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
 170         if (fsp->is_directory || fsp->fh->fd == -1) {
 171                 /* Get the stat struct for the owner info. */
 172                 if (SMB_VFS_STAT(fsp->conn,fsp->fsp_name, psbuf) != 0)
 173                 {
 174                         DEBUG(8, ("SMB_VFS_STAT failed with error %s\n",
 175                                 strerror(errno)));
 176                         return -1;
 177                 }
 178         } else {
 179                 if (SMB_VFS_FSTAT(fsp,fsp->fh->fd, psbuf) != 0)
 180                 {
 181                         DEBUG(8, ("SMB_VFS_FSTAT failed with error %s\n",
 182                                 strerror(errno)));
 183                         return -1;
 184                 }
 185         }
 186
 187         return 0;
 188 }
 189
 190 static BOOL smbacl4_nfs42win(SMB4ACL_T *acl, /* in */
 191         DOM_SID *psid_owner, /* in */
 192         DOM_SID *psid_group, /* in */
 193         SEC_ACE **ppnt_ace_list, /* out */
 194         int *pgood_aces /* out */
 195 )
 196 {
 197         SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
 198         SMB_ACE4_INT_T *aceint;
 199         SEC_ACE *nt_ace_list = NULL;
 200         int good_aces = 0;
 201         TALLOC_CTX *mem_ctx = main_loop_talloc_get();
 202
 203         DEBUG(10, ("smbacl_nfs42win entered"));
 204
 205         aclint = get_validated_aclint(acl);
 206         if (aclint==NULL)
 207                 return False;
 208
 209         nt_ace_list = (SEC_ACE *)talloc_size(mem_ctx, aclint->naces * sizeof(SEC_ACE));
 210         if (nt_ace_list==NULL)
 211         {
 212                 DEBUG(10, ("talloc error"));
 213                 errno = ENOMEM;
 214                 return False;
 215         }
 216         memset(nt_ace_list, 0, aclint->naces * sizeof(SEC_ACE));
 217
 218         for (aceint=aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
 219                 SEC_ACCESS mask;
 220                 DOM_SID sid;
 221                 SMB_ACE4PROP_T  *ace = &aceint->prop;
 222
 223                 DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, "
 224                         "who: %d\n", aceint->magic, ace->aceType, ace->flags,
 225                         ace->aceFlags, ace->aceMask, ace->who.id));
 226
 227                 SMB_ASSERT(aceint->magic==SMB_ACE4_INT_MAGIC);
 228
 229                 if (ace->flags & SMB_ACE4_ID_SPECIAL) {
 230                         switch (ace->who.special_id) {
 231                         case SMB_ACE4_WHO_OWNER:
 232                                 sid_copy(&sid, psid_owner);
 233                                 break;
 234                         case SMB_ACE4_WHO_GROUP:
 235                                 sid_copy(&sid, psid_group);
 236                                 break;
 237                         case SMB_ACE4_WHO_EVERYONE:
 238                                 sid_copy(&sid, &global_sid_World);
 239                                 break;
 240                         default:
 241                                 DEBUG(8, ("invalid special who id %d "
 242                                         "ignored\n", ace->who.special_id));
 243                         }
 244                 } else {
 245                         if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) {
 246                                 gid_to_sid(&sid, ace->who.gid);
 247                         } else {
 248                                 uid_to_sid(&sid, ace->who.uid);
 249                         }
 250                 }
 251                 DEBUG(10, ("mapped %d to %s\n", ace->who.id,
 252                         sid_string_static(&sid)));
 253
 254                 init_sec_access(&mask, ace->aceMask);
 255                 init_sec_ace(&nt_ace_list[good_aces++], &sid,
 256                         ace->aceType, mask,
 257                         ace->aceFlags & 0xf);
 258         }
 259
 260         *ppnt_ace_list = nt_ace_list;
 261         *pgood_aces = good_aces;
 262
 263         return True;
 264 }
 265
 266 size_t smb_get_nt_acl_nfs4(files_struct *fsp,
 267         uint32 security_info,
 268         SEC_DESC **ppdesc, SMB4ACL_T *acl)
 269 {
 270         int     good_aces = 0;
 271         SMB_STRUCT_STAT sbuf;
 272         DOM_SID sid_owner, sid_group;
 273         size_t sd_size = 0;
 274         SEC_ACE *nt_ace_list = NULL;
 275         SEC_ACL *psa = NULL;
 276         TALLOC_CTX *mem_ctx = main_loop_talloc_get();
 277
 278         DEBUG(10, ("smb_get_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
 279
 280         if (acl==NULL || smb_get_naces(acl)==0)
 281                 return 0; /* special because we shouldn't alloc 0 for win */
 282
 283         if (smbacl4_GetFileOwner(fsp, &sbuf))
 284                 return 0;
 285
 286         uid_to_sid(&sid_owner, sbuf.st_uid);
 287         gid_to_sid(&sid_group, sbuf.st_gid);
 288
 289         if (smbacl4_nfs42win(acl,
 290                 &sid_owner,
 291                 &sid_group,
 292                 &nt_ace_list,
 293                 &good_aces
 294                 )==False) {
 295                 DEBUG(8,("smbacl4_nfs42win failed\n"));
 296                 return 0;
 297         }
 298
 299         psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION,
 300                 good_aces, nt_ace_list);
 301         if (psa == NULL) {
 302                 DEBUG(2,("make_sec_acl failed\n"));
 303                 return 0;
 304         }
 305
 306         DEBUG(10,("after make sec_acl\n"));
 307         *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION,
 308                 SEC_DESC_SELF_RELATIVE,
 309                 (security_info & OWNER_SECURITY_INFORMATION)
 310                 ? &sid_owner : NULL,
 311                 (security_info & GROUP_SECURITY_INFORMATION)
 312                 ? &sid_group : NULL,
 313                 NULL, psa, &sd_size);
 314         if (*ppdesc==NULL) {
 315                 DEBUG(2,("make_sec_desc failed\n"));
 316                 return 0;
 317         }
 318
 319         DEBUG(10, ("smb_get_nt_acl_nfs4 successfully exited with sd_size %d\n", sd_size));
 320         return sd_size;
 321 }
 322
 323 enum smbacl4_mode_enum {e_simple=0, e_special=1};
 324 enum smbacl4_acedup_enum {e_dontcare=0, e_reject=1, e_ignore=2, e_merge=3};
 325
 326 typedef struct _smbacl4_vfs_params {
 327         enum smbacl4_mode_enum mode;
 328         BOOL do_chown;
 329         enum smbacl4_acedup_enum acedup;
 330 } smbacl4_vfs_params;
 331
 332 /*
 333  * Gather special parameters for NFS4 ACL handling
 334  */
 335 static int smbacl4_get_vfs_params(
 336         const char *type_name,
 337         files_struct *fsp,
 338         smbacl4_vfs_params *params
 339 )
 340 {
 341         static const struct enum_list enum_smbacl4_modes[] = {
 342                 { e_simple, "simple" },
 343                 { e_special, "special" }
 344         };
 345         static const struct enum_list enum_smbacl4_acedups[] = {
 346                 { e_dontcare, "dontcare" },
 347                 { e_reject, "reject" },
 348                 { e_ignore, "ignore" },
 349                 { e_merge, "merge" },
 350         };
 351
 352         memset(params, 0, sizeof(smbacl4_vfs_params));
 353         params->mode = (enum smbacl4_mode_enum)lp_parm_enum(
 354                 SNUM(fsp->conn), type_name,
 355                 "mode", enum_smbacl4_modes, e_simple);
 356         params->do_chown = lp_parm_bool(SNUM(fsp->conn), type_name,
 357                 "chown", True);
 358         params->acedup = (enum smbacl4_acedup_enum)lp_parm_enum(
 359                 SNUM(fsp->conn), type_name,
 360                 "acedup", enum_smbacl4_acedups, e_dontcare);
 361
 362         DEBUG(10, ("mode:%s, do_chown:%s, acedup: %s\n",
 363                 enum_smbacl4_modes[params->mode].name,
 364                 params->do_chown ? "true" : "false",
 365                 enum_smbacl4_acedups[params->acedup].name));
 366
 367         return 0;
 368 }
 369
 370 static void smbacl4_dump_nfs4acl(int level, SMB4ACL_T *acl)
 371 {
 372         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 373         SMB_ACE4_INT_T *aceint;
 374
 375         DEBUG(level, ("NFS4ACL: size=%d\n", aclint->naces));
 376
 377         for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
 378                 SMB_ACE4PROP_T *ace = &aceint->prop;
 379
 380                 DEBUG(level, ("\tACE: type=%d, flags=0x%x, fflags=0x%x, mask=0x%x, id=%d\n",
 381                         ace->aceType,
 382                         ace->aceFlags, ace->flags,
 383                         ace->aceMask,
 384                         ace->who.id));
 385         }
 386 }
 387
 388 /*
 389  * Find 2 NFS4 who-special ACE property (non-copy!!!)
 390  * match nonzero if "special" and who is equal
 391  * return ace if found matching; otherwise NULL
 392  */
 393 static SMB_ACE4PROP_T *smbacl4_find_equal_special(
 394         SMB4ACL_T *acl,
 395         SMB_ACE4PROP_T *aceNew)
 396 {
 397         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 398         SMB_ACE4_INT_T *aceint;
 399
 400         for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
 401                 SMB_ACE4PROP_T *ace = &aceint->prop;
 402
 403                 if (ace->flags == aceNew->flags &&
 404                         ace->aceType==aceNew->aceType &&
 405                         (ace->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)==
 406                         (aceNew->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
 407                 ) {
 408                         /* keep type safety; e.g. gid is an u.short */
 409                         if (ace->flags & SMB_ACE4_ID_SPECIAL)
 410                         {
 411                                 if (ace->who.special_id==aceNew->who.special_id)
 412                                         return ace;
 413                         } else {
 414                                 if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP)
 415                                 {
 416                                         if (ace->who.gid==aceNew->who.gid)
 417                                                 return ace;
 418                                 } else {
 419                                         if (ace->who.uid==aceNew->who.uid)
 420                                                 return ace;
 421                                 }
 422                         }
 423                 }
 424         }
 425
 426         return NULL;
 427 }
 428
 429 static int smbacl4_fill_ace4(
 430         TALLOC_CTX *mem_ctx,
 431         smbacl4_vfs_params *params,
 432         uid_t ownerUID,
 433         gid_t ownerGID,
 434         SEC_ACE *ace_nt, /* input */
 435         SMB_ACE4PROP_T *ace_v4 /* output */
 436 )
 437 {
 438         const char *dom, *name;
 439         enum lsa_SidType type;
 440         uid_t uid;
 441         gid_t gid;
 442
 443         DEBUG(10, ("got ace for %s\n",
 444                 sid_string_static(&ace_nt->trustee)));
 445
 446         memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
 447         ace_v4->aceType = ace_nt->type; /* only ACCES|DENY supported right now */
 448         ace_v4->aceFlags = ace_nt->flags & SEC_ACE_FLAG_VALID_INHERIT;
 449         ace_v4->aceMask = ace_nt->info.mask &
 450                 (STD_RIGHT_ALL_ACCESS | SA_RIGHT_FILE_ALL_ACCESS);
 451
 452         if (ace_v4->aceFlags!=ace_nt->flags)
 453                 DEBUG(9, ("ace_v4->aceFlags(0x%x)!=ace_nt->flags(0x%x)\n",
 454                         ace_v4->aceFlags, ace_nt->flags));
 455
 456         if (ace_v4->aceMask!=ace_nt->info.mask)
 457                 DEBUG(9, ("ace_v4->aceMask(0x%x)!=ace_nt->info.mask(0x%x)\n",
 458                         ace_v4->aceMask, ace_nt->info.mask));
 459
 460         if (sid_equal(&ace_nt->trustee, &global_sid_World)) {
 461                 ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
 462                 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
 463         } else {
 464                 if (!lookup_sid(mem_ctx, &ace_nt->trustee, &dom, &name, &type)) {
 465                         DEBUG(8, ("Could not find %s' type\n",
 466                                 sid_string_static(&ace_nt->trustee)));
 467                         errno = EINVAL;
 468                         return -1;
 469                 }
 470
 471                 if (type == SID_NAME_USER) {
 472                         if (!sid_to_uid(&ace_nt->trustee, &uid)) {
 473                                 DEBUG(2, ("Could not convert %s to uid\n",
 474                                         sid_string_static(&ace_nt->trustee)));
 475                                 return -1;
 476                         }
 477
 478                         if (params->mode==e_special && uid==ownerUID) {
 479                                 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
 480                                 ace_v4->who.special_id = SMB_ACE4_WHO_OWNER;
 481                         } else {
 482                                 ace_v4->who.uid = uid;
 483                         }
 484                 } else { /* else group? - TODO check it... */
 485                         if (!sid_to_gid(&ace_nt->trustee, &gid)) {
 486                                 DEBUG(2, ("Could not convert %s to gid\n",
 487                                         sid_string_static(&ace_nt->trustee)));
 488                                 return -1;
 489                         }
 490                         ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
 491
 492                         if (params->mode==e_special && gid==ownerGID) {
 493                                 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
 494                                 ace_v4->who.special_id = SMB_ACE4_WHO_GROUP;
 495                         } else {
 496                                 ace_v4->who.gid = gid;
 497                         }
 498                 }
 499         }
 500
 501         return 0; /* OK */
 502 }
 503
 504 static int smbacl4_MergeIgnoreReject(
 505         enum smbacl4_acedup_enum acedup,
 506         SMB4ACL_T *acl, /* may modify it */
 507         SMB_ACE4PROP_T *ace, /* the "new" ACE */
 508         BOOL    *paddNewACE,
 509         int     i
 510 )
 511 {
 512         int     result = 0;
 513         SMB_ACE4PROP_T *ace4found = smbacl4_find_equal_special(acl, ace);
 514         if (ace4found)
 515         {
 516                 switch(acedup)
 517                 {
 518                 case e_merge: /* "merge" flags */
 519                         *paddNewACE = False;
 520                         ace4found->aceFlags |= ace->aceFlags;
 521                         ace4found->aceMask |= ace->aceMask;
 522                         break;
 523                 case e_ignore: /* leave out this record */
 524                         *paddNewACE = False;
 525                         break;
 526                 case e_reject: /* do an error */
 527                         DEBUG(8, ("ACL rejected by duplicate nt ace#%d\n", i));
 528                         errno = EINVAL; /* SHOULD be set on any _real_ error */
 529                         result = -1;
 530                         break;
 531                 default:
 532                         break;
 533                 }
 534         }
 535         return result;
 536 }
 537
 538 static SMB4ACL_T *smbacl4_win2nfs4(
 539         SEC_ACL *dacl,
 540         smbacl4_vfs_params *pparams,
 541         uid_t ownerUID,
 542         gid_t ownerGID
 543 )
 544 {
 545         SMB4ACL_T *acl;
 546         uint32  i;
 547         TALLOC_CTX *mem_ctx = main_loop_talloc_get();
 548
 549         DEBUG(10, ("smbacl4_win2nfs4 invoked\n"));
 550
 551         acl = smb_create_smb4acl();
 552         if (acl==NULL)
 553                 return NULL;
 554
 555         for(i=0; i<dacl->num_aces; i++) {
 556                 SMB_ACE4PROP_T  ace_v4;
 557                 BOOL    addNewACE = True;
 558
 559                 if (smbacl4_fill_ace4(mem_ctx, pparams, ownerUID, ownerGID,
 560                         dacl->ace + i, &ace_v4))
 561                         return NULL;
 562
 563                 if (pparams->acedup!=e_dontcare) {
 564                         if (smbacl4_MergeIgnoreReject(pparams->acedup, acl,
 565                                 &ace_v4, &addNewACE, i))
 566                                 return NULL;
 567                 }
 568
 569                 if (addNewACE)
 570                         smb_add_ace4(acl, &ace_v4);
 571         }
 572
 573         return acl;
 574 }
 575
 576 BOOL smb_set_nt_acl_nfs4(files_struct *fsp,
 577         uint32 security_info_sent,
 578         SEC_DESC *psd,
 579         set_nfs4acl_native_fn_t set_nfs4_native)
 580 {
 581         smbacl4_vfs_params params;
 582         SMB4ACL_T *acl = NULL;
 583         BOOL    result;
 584
 585         SMB_STRUCT_STAT sbuf;
 586         BOOL need_chown = False;
 587         uid_t newUID = (uid_t)-1;
 588         gid_t newGID = (gid_t)-1;
 589
 590         DEBUG(10, ("smb_set_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
 591
 592         if ((security_info_sent & (DACL_SECURITY_INFORMATION |
 593                 GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION)) == 0)
 594         {
 595                 DEBUG(9, ("security_info_sent (0x%x) ignored\n",
 596                         security_info_sent));
 597                 return True; /* won't show error - later to be refined... */
 598         }
 599
 600         /* Special behaviours */
 601         if (smbacl4_get_vfs_params(SMBACL4_PARAM_TYPE_NAME, fsp, &params))
 602                 return False;
 603
 604         if (smbacl4_GetFileOwner(fsp, &sbuf))
 605                 return False;
 606
 607         /* chown logic is a copy/paste from posix_acl.c:set_nt_acl */
 608         if (!unpack_nt_owners(SNUM(fsp->conn), &newUID, &newGID, security_info_sent, psd))
 609         {
 610                 DEBUG(8, ("unpack_nt_owners failed"));
 611                 return False;
 612         }
 613         if (((newUID != (uid_t)-1) && (sbuf.st_uid != newUID)) ||
 614                 ((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
 615                 need_chown = True;
 616         }
 617         if (need_chown) {
 618                 if ((newUID == (uid_t)-1 || newUID == current_user.ut.uid)) {
 619                         if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
 620                                 DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
 621                                         fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID, strerror(errno) ));
 622                                 return False;
 623                         }
 624                         DEBUG(10,("chown %s, %u, %u succeeded.\n",
 625                                 fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
 626                         if (smbacl4_GetFileOwner(fsp, &sbuf))
 627                                 return False;
 628                         need_chown = False;
 629                 } else { /* chown is needed, but _after_ changing acl */
 630                         sbuf.st_uid = newUID; /* OWNER@ in case of e_special */
 631                         sbuf.st_gid = newGID; /* GROUP@ in case of e_special */
 632                 }
 633         }
 634
 635         if ((security_info_sent & DACL_SECURITY_INFORMATION)!=0 && psd->dacl!=NULL)
 636         {
 637                 acl = smbacl4_win2nfs4(psd->dacl, &params, sbuf.st_uid, sbuf.st_gid);
 638                 if (!acl)
 639                         return False;
 640
 641                 smbacl4_dump_nfs4acl(10, acl);
 642
 643                 result = set_nfs4_native(fsp, acl);
 644                 if (result!=True)
 645                 {
 646                         DEBUG(10, ("set_nfs4_native failed with %s\n", strerror(errno)));
 647                         return False;
 648                 }
 649         } else
 650                 DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
 651
 652         /* Any chown pending? */
 653         if (need_chown) {
 654                 DEBUG(3,("chown#2 %s. uid = %u, gid = %u.\n",
 655                         fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
 656                 if (try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
 657                         DEBUG(2,("chown#2 %s, %u, %u failed. Error = %s.\n",
 658                                 fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID,
 659                                 strerror(errno)));
 660                         return False;
 661                 }
 662                 DEBUG(10,("chown#2 %s, %u, %u succeeded.\n",
 663                         fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
 664         }
 665
 666         DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
 667         return True;
 668 }