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 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(struct connection_struct *conn,
 165                                 const char *filename,
 166                                 SMB_STRUCT_STAT *psbuf)
 167 {
 168         memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
 169
 170         /* Get the stat struct for the owner info. */
 171         if (SMB_VFS_STAT(conn, filename, psbuf) != 0)
 172         {
 173                 DEBUG(8, ("SMB_VFS_STAT failed with error %s\n",
 174                         strerror(errno)));
 175                 return -1;
 176         }
 177
 178         return 0;
 179 }
 180
 181 static int smbacl4_fGetFileOwner(files_struct *fsp, SMB_STRUCT_STAT *psbuf)
 182 {
 183         memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
 184
 185         if (fsp->is_directory || fsp->fh->fd == -1) {
 186                 return smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, psbuf);
 187         }
 188         if (SMB_VFS_FSTAT(fsp,fsp->fh->fd, psbuf) != 0)
 189         {
 190                 DEBUG(8, ("SMB_VFS_FSTAT failed with error %s\n",
 191                         strerror(errno)));
 192                 return -1;
 193         }
 194
 195         return 0;
 196 }
 197
 198 static bool smbacl4_nfs42win(TALLOC_CTX *mem_ctx, SMB4ACL_T *acl, /* in */
 199         DOM_SID *psid_owner, /* in */
 200         DOM_SID *psid_group, /* in */
 201         SEC_ACE **ppnt_ace_list, /* out */
 202         int *pgood_aces /* out */
 203 )
 204 {
 205         SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)acl;
 206         SMB_ACE4_INT_T *aceint;
 207         SEC_ACE *nt_ace_list = NULL;
 208         int good_aces = 0;
 209
 210         DEBUG(10, ("smbacl_nfs42win entered"));
 211
 212         aclint = get_validated_aclint(acl);
 213         /* We do not check for naces being 0 or acl being NULL here because it is done upstream */
 214         /* in smb_get_nt_acl_nfs4(). */
 215         nt_ace_list = (SEC_ACE *)TALLOC_ZERO_SIZE(mem_ctx, aclint->naces * sizeof(SEC_ACE));
 216         if (nt_ace_list==NULL)
 217         {
 218                 DEBUG(10, ("talloc error"));
 219                 errno = ENOMEM;
 220                 return False;
 221         }
 222
 223         for (aceint=aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
 224                 SEC_ACCESS mask;
 225                 DOM_SID sid;
 226                 SMB_ACE4PROP_T  *ace = &aceint->prop;
 227
 228                 DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, "
 229                         "who: %d\n", aceint->magic, ace->aceType, ace->flags,
 230                         ace->aceFlags, ace->aceMask, ace->who.id));
 231
 232                 SMB_ASSERT(aceint->magic==SMB_ACE4_INT_MAGIC);
 233
 234                 if (ace->flags & SMB_ACE4_ID_SPECIAL) {
 235                         switch (ace->who.special_id) {
 236                         case SMB_ACE4_WHO_OWNER:
 237                                 sid_copy(&sid, psid_owner);
 238                                 break;
 239                         case SMB_ACE4_WHO_GROUP:
 240                                 sid_copy(&sid, psid_group);
 241                                 break;
 242                         case SMB_ACE4_WHO_EVERYONE:
 243                                 sid_copy(&sid, &global_sid_World);
 244                                 break;
 245                         default:
 246                                 DEBUG(8, ("invalid special who id %d "
 247                                         "ignored\n", ace->who.special_id));
 248                         }
 249                 } else {
 250                         if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) {
 251                                 gid_to_sid(&sid, ace->who.gid);
 252                         } else {
 253                                 uid_to_sid(&sid, ace->who.uid);
 254                         }
 255                 }
 256                 DEBUG(10, ("mapped %d to %s\n", ace->who.id,
 257                            sid_string_dbg(&sid)));
 258
 259                 init_sec_access(&mask, ace->aceMask);
 260                 init_sec_ace(&nt_ace_list[good_aces++], &sid,
 261                         ace->aceType, mask,
 262                         ace->aceFlags & 0xf);
 263         }
 264
 265         *ppnt_ace_list = nt_ace_list;
 266         *pgood_aces = good_aces;
 267
 268         return True;
 269 }
 270
 271 static NTSTATUS smb_get_nt_acl_nfs4_common(const SMB_STRUCT_STAT *sbuf,
 272         uint32 security_info,
 273         SEC_DESC **ppdesc, SMB4ACL_T *acl)
 274 {
 275         int     good_aces = 0;
 276         DOM_SID sid_owner, sid_group;
 277         size_t sd_size = 0;
 278         SEC_ACE *nt_ace_list = NULL;
 279         SEC_ACL *psa = NULL;
 280         TALLOC_CTX *mem_ctx = talloc_tos();
 281
 282         if (acl==NULL || smb_get_naces(acl)==0)
 283                 return NT_STATUS_ACCESS_DENIED; /* special because we
 284                                                  * shouldn't alloc 0 for
 285                                                  * win */
 286
 287         uid_to_sid(&sid_owner, sbuf->st_uid);
 288         gid_to_sid(&sid_group, sbuf->st_gid);
 289
 290         if (smbacl4_nfs42win(mem_ctx, acl, &sid_owner, &sid_group, &nt_ace_list, &good_aces)==False) {
 291                 DEBUG(8,("smbacl4_nfs42win failed\n"));
 292                 return map_nt_error_from_unix(errno);
 293         }
 294
 295         psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION, good_aces, nt_ace_list);
 296         if (psa == NULL) {
 297                 DEBUG(2,("make_sec_acl failed\n"));
 298                 return NT_STATUS_NO_MEMORY;
 299         }
 300
 301         DEBUG(10,("after make sec_acl\n"));
 302         *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE,
 303                                 (security_info & OWNER_SECURITY_INFORMATION) ? &sid_owner : NULL,
 304                                 (security_info & GROUP_SECURITY_INFORMATION) ? &sid_group : NULL,
 305                                 NULL, psa, &sd_size);
 306         if (*ppdesc==NULL) {
 307                 DEBUG(2,("make_sec_desc failed\n"));
 308                 return NT_STATUS_NO_MEMORY;
 309         }
 310
 311         DEBUG(10, ("smb_get_nt_acl_nfs4_common successfully exited with sd_size %d\n",
 312                    ndr_size_security_descriptor(*ppdesc, 0)));
 313
 314         return NT_STATUS_OK;
 315 }
 316
 317 NTSTATUS smb_fget_nt_acl_nfs4(files_struct *fsp,
 318                                uint32 security_info,
 319                                SEC_DESC **ppdesc, SMB4ACL_T *acl)
 320 {
 321         SMB_STRUCT_STAT sbuf;
 322
 323         DEBUG(10, ("smb_fget_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
 324
 325         if (smbacl4_fGetFileOwner(fsp, &sbuf)) {
 326                 return map_nt_error_from_unix(errno);
 327         }
 328
 329         return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, acl);
 330 }
 331
 332 NTSTATUS smb_get_nt_acl_nfs4(struct connection_struct *conn,
 333                               const char *name,
 334                               uint32 security_info,
 335                               SEC_DESC **ppdesc, SMB4ACL_T *acl)
 336 {
 337         SMB_STRUCT_STAT sbuf;
 338
 339         DEBUG(10, ("smb_get_nt_acl_nfs4 invoked for %s\n", name));
 340
 341         if (smbacl4_GetFileOwner(conn, name, &sbuf)) {
 342                 return map_nt_error_from_unix(errno);
 343         }
 344
 345         return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, acl);
 346 }
 347
 348 enum smbacl4_mode_enum {e_simple=0, e_special=1};
 349 enum smbacl4_acedup_enum {e_dontcare=0, e_reject=1, e_ignore=2, e_merge=3};
 350
 351 typedef struct _smbacl4_vfs_params {
 352         enum smbacl4_mode_enum mode;
 353         bool do_chown;
 354         enum smbacl4_acedup_enum acedup;
 355 } smbacl4_vfs_params;
 356
 357 /*
 358  * Gather special parameters for NFS4 ACL handling
 359  */
 360 static int smbacl4_get_vfs_params(
 361         const char *type_name,
 362         files_struct *fsp,
 363         smbacl4_vfs_params *params
 364 )
 365 {
 366         static const struct enum_list enum_smbacl4_modes[] = {
 367                 { e_simple, "simple" },
 368                 { e_special, "special" }
 369         };
 370         static const struct enum_list enum_smbacl4_acedups[] = {
 371                 { e_dontcare, "dontcare" },
 372                 { e_reject, "reject" },
 373                 { e_ignore, "ignore" },
 374                 { e_merge, "merge" },
 375         };
 376
 377         memset(params, 0, sizeof(smbacl4_vfs_params));
 378         params->mode = (enum smbacl4_mode_enum)lp_parm_enum(
 379                 SNUM(fsp->conn), type_name,
 380                 "mode", enum_smbacl4_modes, e_simple);
 381         params->do_chown = lp_parm_bool(SNUM(fsp->conn), type_name,
 382                 "chown", True);
 383         params->acedup = (enum smbacl4_acedup_enum)lp_parm_enum(
 384                 SNUM(fsp->conn), type_name,
 385                 "acedup", enum_smbacl4_acedups, e_dontcare);
 386
 387         DEBUG(10, ("mode:%s, do_chown:%s, acedup: %s\n",
 388                 enum_smbacl4_modes[params->mode].name,
 389                 params->do_chown ? "true" : "false",
 390                 enum_smbacl4_acedups[params->acedup].name));
 391
 392         return 0;
 393 }
 394
 395 static void smbacl4_dump_nfs4acl(int level, SMB4ACL_T *acl)
 396 {
 397         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 398         SMB_ACE4_INT_T *aceint;
 399
 400         DEBUG(level, ("NFS4ACL: size=%d\n", aclint->naces));
 401
 402         for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
 403                 SMB_ACE4PROP_T *ace = &aceint->prop;
 404
 405                 DEBUG(level, ("\tACE: type=%d, flags=0x%x, fflags=0x%x, mask=0x%x, id=%d\n",
 406                         ace->aceType,
 407                         ace->aceFlags, ace->flags,
 408                         ace->aceMask,
 409                         ace->who.id));
 410         }
 411 }
 412
 413 /*
 414  * Find 2 NFS4 who-special ACE property (non-copy!!!)
 415  * match nonzero if "special" and who is equal
 416  * return ace if found matching; otherwise NULL
 417  */
 418 static SMB_ACE4PROP_T *smbacl4_find_equal_special(
 419         SMB4ACL_T *acl,
 420         SMB_ACE4PROP_T *aceNew)
 421 {
 422         SMB_ACL4_INT_T *aclint = get_validated_aclint(acl);
 423         SMB_ACE4_INT_T *aceint;
 424
 425         for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
 426                 SMB_ACE4PROP_T *ace = &aceint->prop;
 427
 428                 if (ace->flags == aceNew->flags &&
 429                         ace->aceType==aceNew->aceType &&
 430                         (ace->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)==
 431                         (aceNew->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
 432                 ) {
 433                         /* keep type safety; e.g. gid is an u.short */
 434                         if (ace->flags & SMB_ACE4_ID_SPECIAL)
 435                         {
 436                                 if (ace->who.special_id==aceNew->who.special_id)
 437                                         return ace;
 438                         } else {
 439                                 if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP)
 440                                 {
 441                                         if (ace->who.gid==aceNew->who.gid)
 442                                                 return ace;
 443                                 } else {
 444                                         if (ace->who.uid==aceNew->who.uid)
 445                                                 return ace;
 446                                 }
 447                         }
 448                 }
 449         }
 450
 451         return NULL;
 452 }
 453
 454 static int smbacl4_fill_ace4(
 455         TALLOC_CTX *mem_ctx,
 456         smbacl4_vfs_params *params,
 457         uid_t ownerUID,
 458         gid_t ownerGID,
 459         SEC_ACE *ace_nt, /* input */
 460         SMB_ACE4PROP_T *ace_v4 /* output */
 461 )
 462 {
 463         const char *dom, *name;
 464         enum lsa_SidType type;
 465         uid_t uid;
 466         gid_t gid;
 467
 468         DEBUG(10, ("got ace for %s\n", sid_string_dbg(&ace_nt->trustee)));
 469
 470         memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
 471         ace_v4->aceType = ace_nt->type; /* only ACCESS|DENY supported right now */
 472         ace_v4->aceFlags = ace_nt->flags & SEC_ACE_FLAG_VALID_INHERIT;
 473         ace_v4->aceMask = ace_nt->access_mask &
 474                 (STD_RIGHT_ALL_ACCESS | SA_RIGHT_FILE_ALL_ACCESS);
 475
 476         if (ace_v4->aceFlags!=ace_nt->flags)
 477                 DEBUG(9, ("ace_v4->aceFlags(0x%x)!=ace_nt->flags(0x%x)\n",
 478                         ace_v4->aceFlags, ace_nt->flags));
 479
 480         if (ace_v4->aceMask!=ace_nt->access_mask)
 481                 DEBUG(9, ("ace_v4->aceMask(0x%x)!=ace_nt->access_mask(0x%x)\n",
 482                         ace_v4->aceMask, ace_nt->access_mask));
 483
 484         if (sid_equal(&ace_nt->trustee, &global_sid_World)) {
 485                 ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
 486                 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
 487         } else {
 488                 if (!lookup_sid(mem_ctx, &ace_nt->trustee, &dom, &name, &type)) {
 489                         DEBUG(8, ("Could not find %s' type\n",
 490                                   sid_string_dbg(&ace_nt->trustee)));
 491                         errno = EINVAL;
 492                         return -1;
 493                 }
 494
 495                 if (type == SID_NAME_USER) {
 496                         if (!sid_to_uid(&ace_nt->trustee, &uid)) {
 497                                 DEBUG(2, ("Could not convert %s to uid\n",
 498                                           sid_string_dbg(&ace_nt->trustee)));
 499                                 return -1;
 500                         }
 501
 502                         if (params->mode==e_special && uid==ownerUID) {
 503                                 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
 504                                 ace_v4->who.special_id = SMB_ACE4_WHO_OWNER;
 505                         } else {
 506                                 ace_v4->who.uid = uid;
 507                         }
 508                 } else { /* else group? - TODO check it... */
 509                         if (!sid_to_gid(&ace_nt->trustee, &gid)) {
 510                                 DEBUG(2, ("Could not convert %s to gid\n",
 511                                           sid_string_dbg(&ace_nt->trustee)));
 512                                 return -1;
 513                         }
 514                         ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
 515
 516                         if (params->mode==e_special && gid==ownerGID) {
 517                                 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
 518                                 ace_v4->who.special_id = SMB_ACE4_WHO_GROUP;
 519                         } else {
 520                                 ace_v4->who.gid = gid;
 521                         }
 522                 }
 523         }
 524
 525         return 0; /* OK */
 526 }
 527
 528 static int smbacl4_MergeIgnoreReject(
 529         enum smbacl4_acedup_enum acedup,
 530         SMB4ACL_T *acl, /* may modify it */
 531         SMB_ACE4PROP_T *ace, /* the "new" ACE */
 532         bool    *paddNewACE,
 533         int     i
 534 )
 535 {
 536         int     result = 0;
 537         SMB_ACE4PROP_T *ace4found = smbacl4_find_equal_special(acl, ace);
 538         if (ace4found)
 539         {
 540                 switch(acedup)
 541                 {
 542                 case e_merge: /* "merge" flags */
 543                         *paddNewACE = False;
 544                         ace4found->aceFlags |= ace->aceFlags;
 545                         ace4found->aceMask |= ace->aceMask;
 546                         break;
 547                 case e_ignore: /* leave out this record */
 548                         *paddNewACE = False;
 549                         break;
 550                 case e_reject: /* do an error */
 551                         DEBUG(8, ("ACL rejected by duplicate nt ace#%d\n", i));
 552                         errno = EINVAL; /* SHOULD be set on any _real_ error */
 553                         result = -1;
 554                         break;
 555                 default:
 556                         break;
 557                 }
 558         }
 559         return result;
 560 }
 561
 562 static SMB4ACL_T *smbacl4_win2nfs4(
 563         SEC_ACL *dacl,
 564         smbacl4_vfs_params *pparams,
 565         uid_t ownerUID,
 566         gid_t ownerGID
 567 )
 568 {
 569         SMB4ACL_T *acl;
 570         uint32  i;
 571         TALLOC_CTX *mem_ctx = talloc_tos();
 572
 573         DEBUG(10, ("smbacl4_win2nfs4 invoked\n"));
 574
 575         acl = smb_create_smb4acl();
 576         if (acl==NULL)
 577                 return NULL;
 578
 579         for(i=0; i<dacl->num_aces; i++) {
 580                 SMB_ACE4PROP_T  ace_v4;
 581                 bool    addNewACE = True;
 582
 583                 if (smbacl4_fill_ace4(mem_ctx, pparams, ownerUID, ownerGID,
 584                         dacl->aces + i, &ace_v4))
 585                         return NULL;
 586
 587                 if (pparams->acedup!=e_dontcare) {
 588                         if (smbacl4_MergeIgnoreReject(pparams->acedup, acl,
 589                                 &ace_v4, &addNewACE, i))
 590                                 return NULL;
 591                 }
 592
 593                 if (addNewACE)
 594                         smb_add_ace4(acl, &ace_v4);
 595         }
 596
 597         return acl;
 598 }
 599
 600 NTSTATUS smb_set_nt_acl_nfs4(files_struct *fsp,
 601         uint32 security_info_sent,
 602         SEC_DESC *psd,
 603         set_nfs4acl_native_fn_t set_nfs4_native)
 604 {
 605         smbacl4_vfs_params params;
 606         SMB4ACL_T *acl = NULL;
 607         bool    result;
 608
 609         SMB_STRUCT_STAT sbuf;
 610         uid_t newUID = (uid_t)-1;
 611         gid_t newGID = (gid_t)-1;
 612
 613         DEBUG(10, ("smb_set_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
 614
 615         if ((security_info_sent & (DACL_SECURITY_INFORMATION |
 616                 GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION)) == 0)
 617         {
 618                 DEBUG(9, ("security_info_sent (0x%x) ignored\n",
 619                         security_info_sent));
 620                 return NT_STATUS_OK; /* won't show error - later to be refined... */
 621         }
 622
 623         /* Special behaviours */
 624         if (smbacl4_get_vfs_params(SMBACL4_PARAM_TYPE_NAME, fsp, &params))
 625                 return NT_STATUS_NO_MEMORY;
 626
 627         if (smbacl4_fGetFileOwner(fsp, &sbuf))
 628                 return map_nt_error_from_unix(errno);
 629
 630         if (params.do_chown) {
 631                 /* chown logic is a copy/paste from posix_acl.c:set_nt_acl */
 632                 NTSTATUS status = unpack_nt_owners(SNUM(fsp->conn), &newUID, &newGID, security_info_sent, psd);
 633                 if (!NT_STATUS_IS_OK(status)) {
 634                         DEBUG(8, ("unpack_nt_owners failed"));
 635                         return status;
 636                 }
 637                 if (((newUID != (uid_t)-1) && (sbuf.st_uid != newUID)) ||
 638                                 ((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
 639                         if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
 640                                 DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
 641                                         fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID, strerror(errno) ));
 642                                 if (errno == EPERM) {
 643                                         return NT_STATUS_INVALID_OWNER;
 644                                 }
 645                                 return map_nt_error_from_unix(errno);
 646                         }
 647                         DEBUG(10,("chown %s, %u, %u succeeded.\n",
 648                                 fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
 649                         if (smbacl4_fGetFileOwner(fsp, &sbuf))
 650                                 return map_nt_error_from_unix(errno);
 651                 }
 652         }
 653
 654         if ((security_info_sent & DACL_SECURITY_INFORMATION)!=0 && psd->dacl!=NULL)
 655         {
 656                 acl = smbacl4_win2nfs4(psd->dacl, &params, sbuf.st_uid, sbuf.st_gid);
 657                 if (!acl)
 658                         return map_nt_error_from_unix(errno);
 659
 660                 smbacl4_dump_nfs4acl(10, acl);
 661
 662                 result = set_nfs4_native(fsp, acl);
 663                 if (result!=True)
 664                 {
 665                         DEBUG(10, ("set_nfs4_native failed with %s\n", strerror(errno)));
 666                         return map_nt_error_from_unix(errno);
 667                 }
 668         } else
 669                 DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
 670
 671         DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
 672         return NT_STATUS_OK;
 673 }