dlls/ntdll/om.c

   1 /*
   2  *      Object management functions
   3  *
   4  * Copyright 1999, 2000 Juergen Schmied
   5  * Copyright 2005 Vitaliy Margolen
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #ifdef HAVE_IO_H
  28 # include <io.h>
  29 #endif
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33
  34 #include "ntstatus.h"
  35 #define WIN32_NO_STATUS
  36 #include "wine/debug.h"
  37 #include "windef.h"
  38 #include "winternl.h"
  39 #include "ntdll_misc.h"
  40 #include "wine/server.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  43
  44
  45 /*
  46  *      Generic object functions
  47  */
  48
  49 /******************************************************************************
  50  * NtQueryObject [NTDLL.@]
  51  * ZwQueryObject [NTDLL.@]
  52  */
  53 NTSTATUS WINAPI NtQueryObject(IN HANDLE handle,
  54                               IN OBJECT_INFORMATION_CLASS info_class,
  55                               OUT PVOID ptr, IN ULONG len, OUT PULONG used_len)
  56 {
  57     NTSTATUS status;
  58
  59     TRACE("(%p,0x%08x,%p,0x%08x,%p): stub\n",
  60           handle, info_class, ptr, len, used_len);
  61
  62     if (used_len) *used_len = 0;
  63
  64     switch (info_class)
  65     {
  66     case ObjectBasicInformation:
  67         {
  68             POBJECT_BASIC_INFORMATION p = (POBJECT_BASIC_INFORMATION)ptr;
  69
  70             if (len < sizeof(*p)) return STATUS_INVALID_BUFFER_SIZE;
  71
  72             SERVER_START_REQ( get_object_info )
  73             {
  74                 req->handle = handle;
  75                 status = wine_server_call( req );
  76                 if (status == STATUS_SUCCESS)
  77                 {
  78                     memset( p, 0, sizeof(*p) );
  79                     p->GrantedAccess = reply->access;
  80                     p->PointerCount = reply->ref_count;
  81                     p->HandleCount = 1; /* at least one */
  82                     if (used_len) *used_len = sizeof(*p);
  83                 }
  84             }
  85             SERVER_END_REQ;
  86         }
  87         break;
  88     case ObjectDataInformation:
  89         {
  90             OBJECT_DATA_INFORMATION* p = (OBJECT_DATA_INFORMATION*)ptr;
  91
  92             if (len < sizeof(*p)) return STATUS_INVALID_BUFFER_SIZE;
  93
  94             SERVER_START_REQ( set_handle_info )
  95             {
  96                 req->handle = handle;
  97                 req->flags  = 0;
  98                 req->mask   = 0;
  99                 status = wine_server_call( req );
 100                 if (status == STATUS_SUCCESS)
 101                 {
 102                     p->InheritHandle = (reply->old_flags & HANDLE_FLAG_INHERIT) ? TRUE : FALSE;
 103                     p->ProtectFromClose = (reply->old_flags & HANDLE_FLAG_PROTECT_FROM_CLOSE) ? TRUE : FALSE;
 104                     if (used_len) *used_len = sizeof(*p);
 105                 }
 106             }
 107             SERVER_END_REQ;
 108         }
 109         break;
 110     default:
 111         FIXME("Unsupported information class %u\n", info_class);
 112         status = STATUS_NOT_IMPLEMENTED;
 113         break;
 114     }
 115     return status;
 116 }
 117
 118 /******************************************************************
 119  *              NtSetInformationObject [NTDLL.@]
 120  *              ZwSetInformationObject [NTDLL.@]
 121  *
 122  */
 123 NTSTATUS WINAPI NtSetInformationObject(IN HANDLE handle,
 124                                        IN OBJECT_INFORMATION_CLASS info_class,
 125                                        IN PVOID ptr, IN ULONG len)
 126 {
 127     NTSTATUS status;
 128
 129     TRACE("(%p,0x%08x,%p,0x%08x): stub\n",
 130           handle, info_class, ptr, len);
 131
 132     switch (info_class)
 133     {
 134     case ObjectDataInformation:
 135         {
 136             OBJECT_DATA_INFORMATION* p = (OBJECT_DATA_INFORMATION*)ptr;
 137
 138             if (len < sizeof(*p)) return STATUS_INVALID_BUFFER_SIZE;
 139
 140             SERVER_START_REQ( set_handle_info )
 141             {
 142                 req->handle = handle;
 143                 req->flags  = 0;
 144                 req->mask   = HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE;
 145                 if (p->InheritHandle)    req->flags |= HANDLE_FLAG_INHERIT;
 146                 if (p->ProtectFromClose) req->flags |= HANDLE_FLAG_PROTECT_FROM_CLOSE;
 147                 status = wine_server_call( req );
 148             }
 149             SERVER_END_REQ;
 150         }
 151         break;
 152     default:
 153         FIXME("Unsupported information class %u\n", info_class);
 154         status = STATUS_NOT_IMPLEMENTED;
 155         break;
 156     }
 157     return status;
 158 }
 159
 160 /******************************************************************************
 161  *  NtQuerySecurityObject       [NTDLL.@]
 162  *
 163  * An ntdll analogue to GetKernelObjectSecurity().
 164  *
 165  * NOTES
 166  *  only the lowest 4 bit of SecurityObjectInformationClass are used
 167  *  0x7-0xf returns STATUS_ACCESS_DENIED (even running with system privileges)
 168  *
 169  * FIXME
 170  *  We are constructing a fake sid (Administrators:Full, System:Full, Everyone:Read)
 171  */
 172 NTSTATUS WINAPI
 173 NtQuerySecurityObject(
 174         IN HANDLE Object,
 175         IN SECURITY_INFORMATION RequestedInformation,
 176         OUT PSECURITY_DESCRIPTOR pSecurityDesriptor,
 177         IN ULONG Length,
 178         OUT PULONG ResultLength)
 179 {
 180         static const SID_IDENTIFIER_AUTHORITY localSidAuthority = {SECURITY_NT_AUTHORITY};
 181         static const SID_IDENTIFIER_AUTHORITY worldSidAuthority = {SECURITY_WORLD_SID_AUTHORITY};
 182         BYTE Buffer[256];
 183         PISECURITY_DESCRIPTOR_RELATIVE psd = (PISECURITY_DESCRIPTOR_RELATIVE)Buffer;
 184         UINT BufferIndex = sizeof(SECURITY_DESCRIPTOR_RELATIVE);
 185
 186         FIXME("(%p,0x%08x,%p,0x%08x,%p) stub!\n",
 187         Object, RequestedInformation, pSecurityDesriptor, Length, ResultLength);
 188
 189         RequestedInformation &= 0x0000000f;
 190
 191         ZeroMemory(Buffer, 256);
 192         RtlCreateSecurityDescriptor((PSECURITY_DESCRIPTOR)psd, SECURITY_DESCRIPTOR_REVISION);
 193         psd->Control = SE_SELF_RELATIVE |
 194           ((RequestedInformation & DACL_SECURITY_INFORMATION) ? SE_DACL_PRESENT:0);
 195
 196         /* owner: administrator S-1-5-20-220*/
 197         if (OWNER_SECURITY_INFORMATION & RequestedInformation)
 198         {
 199           SID* psid = (SID*)&(Buffer[BufferIndex]);
 200
 201           psd->Owner = BufferIndex;
 202           BufferIndex += RtlLengthRequiredSid(2);
 203
 204           psid->Revision = SID_REVISION;
 205           psid->SubAuthorityCount = 2;
 206           psid->IdentifierAuthority = localSidAuthority;
 207           psid->SubAuthority[0] = SECURITY_BUILTIN_DOMAIN_RID;
 208           psid->SubAuthority[1] = DOMAIN_ALIAS_RID_ADMINS;
 209         }
 210
 211         /* group: built in domain S-1-5-12 */
 212         if (GROUP_SECURITY_INFORMATION & RequestedInformation)
 213         {
 214           SID* psid = (SID*) &(Buffer[BufferIndex]);
 215
 216           psd->Group = BufferIndex;
 217           BufferIndex += RtlLengthRequiredSid(1);
 218
 219           psid->Revision = SID_REVISION;
 220           psid->SubAuthorityCount = 1;
 221           psid->IdentifierAuthority = localSidAuthority;
 222           psid->SubAuthority[0] = SECURITY_LOCAL_SYSTEM_RID;
 223         }
 224
 225         /* discretionary ACL */
 226         if (DACL_SECURITY_INFORMATION & RequestedInformation)
 227         {
 228           /* acl header */
 229           PACL pacl = (PACL)&(Buffer[BufferIndex]);
 230           PACCESS_ALLOWED_ACE pace;
 231           SID* psid;
 232
 233           psd->Dacl = BufferIndex;
 234
 235           pacl->AclRevision = MIN_ACL_REVISION;
 236           pacl->AceCount = 3;
 237           pacl->AclSize = BufferIndex; /* storing the start index temporary */
 238
 239           BufferIndex += sizeof(ACL);
 240
 241           /* ACE System - full access */
 242           pace = (PACCESS_ALLOWED_ACE)&(Buffer[BufferIndex]);
 243           BufferIndex += sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD);
 244
 245           pace->Header.AceType = ACCESS_ALLOWED_ACE_TYPE;
 246           pace->Header.AceFlags = CONTAINER_INHERIT_ACE;
 247           pace->Header.AceSize = sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD) + RtlLengthRequiredSid(1);
 248           pace->Mask = STANDARD_RIGHTS_ALL | SPECIFIC_RIGHTS_ALL;
 249           pace->SidStart = BufferIndex;
 250
 251           /* SID S-1-5-12 (System) */
 252           psid = (SID*)&(Buffer[BufferIndex]);
 253
 254           BufferIndex += RtlLengthRequiredSid(1);
 255
 256           psid->Revision = SID_REVISION;
 257           psid->SubAuthorityCount = 1;
 258           psid->IdentifierAuthority = localSidAuthority;
 259           psid->SubAuthority[0] = SECURITY_LOCAL_SYSTEM_RID;
 260
 261           /* ACE Administrators - full access*/
 262           pace = (PACCESS_ALLOWED_ACE) &(Buffer[BufferIndex]);
 263           BufferIndex += sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD);
 264
 265           pace->Header.AceType = ACCESS_ALLOWED_ACE_TYPE;
 266           pace->Header.AceFlags = CONTAINER_INHERIT_ACE;
 267           pace->Header.AceSize = sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD) + RtlLengthRequiredSid(2);
 268           pace->Mask = STANDARD_RIGHTS_ALL | SPECIFIC_RIGHTS_ALL;
 269           pace->SidStart = BufferIndex;
 270
 271           /* S-1-5-12 (Administrators) */
 272           psid = (SID*)&(Buffer[BufferIndex]);
 273
 274           BufferIndex += RtlLengthRequiredSid(2);
 275
 276           psid->Revision = SID_REVISION;
 277           psid->SubAuthorityCount = 2;
 278           psid->IdentifierAuthority = localSidAuthority;
 279           psid->SubAuthority[0] = SECURITY_BUILTIN_DOMAIN_RID;
 280           psid->SubAuthority[1] = DOMAIN_ALIAS_RID_ADMINS;
 281
 282           /* ACE Everyone - read access */
 283           pace = (PACCESS_ALLOWED_ACE)&(Buffer[BufferIndex]);
 284           BufferIndex += sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD);
 285
 286           pace->Header.AceType = ACCESS_ALLOWED_ACE_TYPE;
 287           pace->Header.AceFlags = CONTAINER_INHERIT_ACE;
 288           pace->Header.AceSize = sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD) + RtlLengthRequiredSid(1);
 289           pace->Mask = READ_CONTROL| 0x19;
 290           pace->SidStart = BufferIndex;
 291
 292           /* SID S-1-1-0 (Everyone) */
 293           psid = (SID*)&(Buffer[BufferIndex]);
 294
 295           BufferIndex += RtlLengthRequiredSid(1);
 296
 297           psid->Revision = SID_REVISION;
 298           psid->SubAuthorityCount = 1;
 299           psid->IdentifierAuthority = worldSidAuthority;
 300           psid->SubAuthority[0] = 0;
 301
 302           /* calculate used bytes */
 303           pacl->AclSize = BufferIndex - pacl->AclSize;
 304         }
 305         *ResultLength = BufferIndex;
 306         TRACE("len=%u\n", *ResultLength);
 307         if (Length < *ResultLength) return STATUS_BUFFER_TOO_SMALL;
 308         memcpy(pSecurityDesriptor, Buffer, *ResultLength);
 309
 310         return STATUS_SUCCESS;
 311 }
 312
 313
 314 /******************************************************************************
 315  *  NtDuplicateObject           [NTDLL.@]
 316  *  ZwDuplicateObject           [NTDLL.@]
 317  */
 318 NTSTATUS WINAPI NtDuplicateObject( HANDLE source_process, HANDLE source,
 319                                    HANDLE dest_process, PHANDLE dest,
 320                                    ACCESS_MASK access, ULONG attributes, ULONG options )
 321 {
 322     NTSTATUS ret;
 323     SERVER_START_REQ( dup_handle )
 324     {
 325         req->src_process = source_process;
 326         req->src_handle  = source;
 327         req->dst_process = dest_process;
 328         req->access      = access;
 329         req->attributes  = attributes;
 330         req->options     = options;
 331
 332         if (!(ret = wine_server_call( req )))
 333         {
 334             if (dest) *dest = reply->handle;
 335             if (reply->closed)
 336             {
 337                 if (reply->self)
 338                 {
 339                     int fd = server_remove_fd_from_cache( source );
 340                     if (fd != -1) close( fd );
 341                 }
 342             }
 343             else if (options & DUPLICATE_CLOSE_SOURCE)
 344                 WARN( "failed to close handle %p in process %p\n", source, source_process );
 345         }
 346     }
 347     SERVER_END_REQ;
 348     return ret;
 349 }
 350
 351 /**************************************************************************
 352  *                 NtClose                              [NTDLL.@]
 353  *
 354  * Close a handle reference to an object.
 355  *
 356  * PARAMS
 357  *  Handle [I] handle to close
 358  *
 359  * RETURNS
 360  *  Success: ERROR_SUCCESS.
 361  *  Failure: An NTSTATUS error code.
 362  */
 363 NTSTATUS WINAPI NtClose( HANDLE Handle )
 364 {
 365     NTSTATUS ret;
 366     int fd = server_remove_fd_from_cache( Handle );
 367
 368     SERVER_START_REQ( close_handle )
 369     {
 370         req->handle = Handle;
 371         ret = wine_server_call( req );
 372     }
 373     SERVER_END_REQ;
 374     if (fd != -1) close( fd );
 375     return ret;
 376 }
 377
 378 /*
 379  *      Directory functions
 380  */
 381
 382 /**************************************************************************
 383  * NtOpenDirectoryObject [NTDLL.@]
 384  * ZwOpenDirectoryObject [NTDLL.@]
 385  *
 386  * Open a namespace directory object.
 387  *
 388  * PARAMS
 389  *  DirectoryHandle  [O] Destination for the new directory handle
 390  *  DesiredAccess    [I] Desired access to the directory
 391  *  ObjectAttributes [I] Structure describing the directory
 392  *
 393  * RETURNS
 394  *  Success: ERROR_SUCCESS.
 395  *  Failure: An NTSTATUS error code.
 396  */
 397 NTSTATUS WINAPI NtOpenDirectoryObject(PHANDLE DirectoryHandle, ACCESS_MASK DesiredAccess,
 398                                       POBJECT_ATTRIBUTES ObjectAttributes)
 399 {
 400     NTSTATUS ret;
 401     TRACE("(%p,0x%08x)\n", DirectoryHandle, DesiredAccess);
 402     dump_ObjectAttributes(ObjectAttributes);
 403
 404     if (!DirectoryHandle) return STATUS_ACCESS_VIOLATION;
 405     if (!ObjectAttributes) return STATUS_INVALID_PARAMETER;
 406     /* Have to test it here because server won't know difference between
 407      * ObjectName == NULL and ObjectName == "" */
 408     if (!ObjectAttributes->ObjectName)
 409     {
 410         if (ObjectAttributes->RootDirectory)
 411             return STATUS_OBJECT_NAME_INVALID;
 412         else
 413             return STATUS_OBJECT_PATH_SYNTAX_BAD;
 414     }
 415
 416     SERVER_START_REQ(open_directory)
 417     {
 418         req->access = DesiredAccess;
 419         req->attributes = ObjectAttributes->Attributes;
 420         req->rootdir = ObjectAttributes->RootDirectory;
 421         if (ObjectAttributes->ObjectName)
 422             wine_server_add_data(req, ObjectAttributes->ObjectName->Buffer,
 423                                  ObjectAttributes->ObjectName->Length);
 424         ret = wine_server_call( req );
 425         *DirectoryHandle = reply->handle;
 426     }
 427     SERVER_END_REQ;
 428     return ret;
 429 }
 430
 431 /******************************************************************************
 432  *  NtCreateDirectoryObject     [NTDLL.@]
 433  *  ZwCreateDirectoryObject     [NTDLL.@]
 434  *
 435  * Create a namespace directory object.
 436  *
 437  * PARAMS
 438  *  DirectoryHandle  [O] Destination for the new directory handle
 439  *  DesiredAccess    [I] Desired access to the directory
 440  *  ObjectAttributes [I] Structure describing the directory
 441  *
 442  * RETURNS
 443  *  Success: ERROR_SUCCESS.
 444  *  Failure: An NTSTATUS error code.
 445  */
 446 NTSTATUS WINAPI NtCreateDirectoryObject(PHANDLE DirectoryHandle, ACCESS_MASK DesiredAccess,
 447                                         POBJECT_ATTRIBUTES ObjectAttributes)
 448 {
 449     NTSTATUS ret;
 450     TRACE("(%p,0x%08x)\n", DirectoryHandle, DesiredAccess);
 451     dump_ObjectAttributes(ObjectAttributes);
 452
 453     if (!DirectoryHandle) return STATUS_ACCESS_VIOLATION;
 454
 455     SERVER_START_REQ(create_directory)
 456     {
 457         req->access = DesiredAccess;
 458         req->attributes = ObjectAttributes ? ObjectAttributes->Attributes : 0;
 459         req->rootdir = ObjectAttributes ? ObjectAttributes->RootDirectory : 0;
 460         if (ObjectAttributes && ObjectAttributes->ObjectName)
 461             wine_server_add_data(req, ObjectAttributes->ObjectName->Buffer,
 462                                  ObjectAttributes->ObjectName->Length);
 463         ret = wine_server_call( req );
 464         *DirectoryHandle = reply->handle;
 465     }
 466     SERVER_END_REQ;
 467     return ret;
 468 }
 469
 470 /******************************************************************************
 471  * NtQueryDirectoryObject [NTDLL.@]
 472  * ZwQueryDirectoryObject [NTDLL.@]
 473  *
 474  * Read information from a namespace directory.
 475  *
 476  * PARAMS
 477  *  DirectoryHandle   [I]   Handle to a directory object
 478  *  Buffer            [O]   Buffer to hold the read data
 479  *  BufferLength      [I]   Size of the buffer in bytes
 480  *  ReturnSingleEntry [I]   If TRUE, return a single entry, if FALSE, return as many as fit in the buffer
 481  *  RestartScan       [I]   If TRUE, start scanning from the start, if FALSE, scan from Context
 482  *  Context           [I/O] Indicates what point of the directory the scan is at
 483  *  ReturnLength      [O]   Caller supplied storage for the number of bytes written (or NULL)
 484  *
 485  * RETURNS
 486  *  Success: ERROR_SUCCESS.
 487  *  Failure: An NTSTATUS error code.
 488  */
 489 NTSTATUS WINAPI NtQueryDirectoryObject(IN HANDLE DirectoryHandle, OUT PDIRECTORY_BASIC_INFORMATION Buffer,
 490                                        IN ULONG BufferLength, IN BOOLEAN ReturnSingleEntry, IN BOOLEAN RestartScan,
 491                                        IN OUT PULONG Context, OUT PULONG ReturnLength OPTIONAL)
 492 {
 493     FIXME("(%p,%p,0x%08x,0x%08x,0x%08x,%p,%p), stub\n", DirectoryHandle, Buffer, BufferLength, ReturnSingleEntry,
 494           RestartScan, Context, ReturnLength);
 495
 496     return STATUS_NOT_IMPLEMENTED;
 497 }
 498
 499 /*
 500  *      Link objects
 501  */
 502
 503 /******************************************************************************
 504  *  NtOpenSymbolicLinkObject    [NTDLL.@]
 505  *  ZwOpenSymbolicLinkObject    [NTDLL.@]
 506  *
 507  * Open a namespace symbolic link object.
 508  *
 509  * PARAMS
 510  *  LinkHandle       [O] Destination for the new symbolic link handle
 511  *  DesiredAccess    [I] Desired access to the symbolic link
 512  *  ObjectAttributes [I] Structure describing the symbolic link
 513  *
 514  * RETURNS
 515  *  Success: ERROR_SUCCESS.
 516  *  Failure: An NTSTATUS error code.
 517  */
 518 NTSTATUS WINAPI NtOpenSymbolicLinkObject(OUT PHANDLE LinkHandle, IN ACCESS_MASK DesiredAccess,
 519                                          IN POBJECT_ATTRIBUTES ObjectAttributes)
 520 {
 521     NTSTATUS ret;
 522     TRACE("(%p,0x%08x,%p)\n",LinkHandle, DesiredAccess, ObjectAttributes);
 523     dump_ObjectAttributes(ObjectAttributes);
 524
 525     if (!LinkHandle) return STATUS_ACCESS_VIOLATION;
 526     if (!ObjectAttributes) return STATUS_INVALID_PARAMETER;
 527     /* Have to test it here because server won't know difference between
 528      * ObjectName == NULL and ObjectName == "" */
 529     if (!ObjectAttributes->ObjectName)
 530     {
 531         if (ObjectAttributes->RootDirectory)
 532             return STATUS_OBJECT_NAME_INVALID;
 533         else
 534             return STATUS_OBJECT_PATH_SYNTAX_BAD;
 535     }
 536
 537     SERVER_START_REQ(open_symlink)
 538     {
 539         req->access = DesiredAccess;
 540         req->attributes = ObjectAttributes->Attributes;
 541         req->rootdir = ObjectAttributes->RootDirectory;
 542         if (ObjectAttributes->ObjectName)
 543             wine_server_add_data(req, ObjectAttributes->ObjectName->Buffer,
 544                                  ObjectAttributes->ObjectName->Length);
 545         ret = wine_server_call( req );
 546         *LinkHandle = reply->handle;
 547     }
 548     SERVER_END_REQ;
 549     return ret;
 550 }
 551
 552 /******************************************************************************
 553  *  NtCreateSymbolicLinkObject  [NTDLL.@]
 554  *  ZwCreateSymbolicLinkObject  [NTDLL.@]
 555  *
 556  * Open a namespace symbolic link object.
 557  *
 558  * PARAMS
 559  *  SymbolicLinkHandle [O] Destination for the new symbolic link handle
 560  *  DesiredAccess      [I] Desired access to the symbolic link
 561  *  ObjectAttributes   [I] Structure describing the symbolic link
 562  *  TargetName         [I] Name of the target symbolic link points to
 563  *
 564  * RETURNS
 565  *  Success: ERROR_SUCCESS.
 566  *  Failure: An NTSTATUS error code.
 567  */
 568 NTSTATUS WINAPI NtCreateSymbolicLinkObject(OUT PHANDLE SymbolicLinkHandle,IN ACCESS_MASK DesiredAccess,
 569                                            IN POBJECT_ATTRIBUTES ObjectAttributes,
 570                                            IN PUNICODE_STRING TargetName)
 571 {
 572     NTSTATUS ret;
 573     TRACE("(%p,0x%08x,%p, -> %s)\n", SymbolicLinkHandle, DesiredAccess, ObjectAttributes,
 574                                       debugstr_us(TargetName));
 575     dump_ObjectAttributes(ObjectAttributes);
 576
 577     if (!SymbolicLinkHandle || !TargetName) return STATUS_ACCESS_VIOLATION;
 578     if (!TargetName->Buffer) return STATUS_INVALID_PARAMETER;
 579
 580     SERVER_START_REQ(create_symlink)
 581     {
 582         req->access = DesiredAccess;
 583         req->attributes = ObjectAttributes ? ObjectAttributes->Attributes : 0;
 584         req->rootdir = ObjectAttributes ? ObjectAttributes->RootDirectory : 0;
 585         if (ObjectAttributes && ObjectAttributes->ObjectName)
 586         {
 587             req->name_len = ObjectAttributes->ObjectName->Length;
 588             wine_server_add_data(req, ObjectAttributes->ObjectName->Buffer,
 589                                  ObjectAttributes->ObjectName->Length);
 590         }
 591         else
 592             req->name_len = 0;
 593         wine_server_add_data(req, TargetName->Buffer, TargetName->Length);
 594         ret = wine_server_call( req );
 595         *SymbolicLinkHandle = reply->handle;
 596     }
 597     SERVER_END_REQ;
 598     return ret;
 599 }
 600
 601 /******************************************************************************
 602  *  NtQuerySymbolicLinkObject   [NTDLL.@]
 603  *  ZwQuerySymbolicLinkObject   [NTDLL.@]
 604  *
 605  * Query a namespace symbolic link object target name.
 606  *
 607  * PARAMS
 608  *  LinkHandle     [I] Handle to a symbolic link object
 609  *  LinkTarget     [O] Destination for the symbolic link target
 610  *  ReturnedLength [O] Size of returned data
 611  *
 612  * RETURNS
 613  *  Success: ERROR_SUCCESS.
 614  *  Failure: An NTSTATUS error code.
 615  */
 616 NTSTATUS WINAPI NtQuerySymbolicLinkObject(IN HANDLE LinkHandle, IN OUT PUNICODE_STRING LinkTarget,
 617                                           OUT PULONG ReturnedLength OPTIONAL)
 618 {
 619     NTSTATUS ret;
 620     TRACE("(%p,%p,%p)\n", LinkHandle, LinkTarget, ReturnedLength);
 621
 622     if (!LinkTarget) return STATUS_ACCESS_VIOLATION;
 623
 624     SERVER_START_REQ(query_symlink)
 625     {
 626         req->handle = LinkHandle;
 627         wine_server_set_reply( req, LinkTarget->Buffer, LinkTarget->MaximumLength );
 628         if (!(ret = wine_server_call( req )))
 629         {
 630             LinkTarget->Length = wine_server_reply_size(reply);
 631             if (ReturnedLength) *ReturnedLength = LinkTarget->Length;
 632         }
 633     }
 634     SERVER_END_REQ;
 635     return ret;
 636 }
 637
 638 /******************************************************************************
 639  *  NtAllocateUuids   [NTDLL.@]
 640  */
 641 NTSTATUS WINAPI NtAllocateUuids(
 642         PULARGE_INTEGER Time,
 643         PULONG Range,
 644         PULONG Sequence)
 645 {
 646         FIXME("(%p,%p,%p), stub.\n", Time, Range, Sequence);
 647         return 0;
 648 }