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