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