winsup/cygwin/wincap.cc

   1 /* wincap.cc -- figure out on which OS we're running. Set the
   2                 capability class to the appropriate values.
   3
   4    Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
   5    2009, 2010, 2011 Red Hat, Inc.
   6
   7 This file is part of Cygwin.
   8
   9 This software is a copyrighted work licensed under the terms of the
  10 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
  11 details. */
  12
  13 #include "winsup.h"
  14 #include "security.h"
  15 #include "ntdll.h"
  16
  17 /* CV, 2008-10-23: All wincapc's have to be in the .cygwin_dll_common section,
  18    same as wincap itself.  Otherwise the capability changes made in
  19    wincapc::init() are not propagated to any subsequently started process
  20    in the same session.  I'm only writing this longish comment because I'm
  21    puzzled that this has never been noticed before... */
  22
  23 /* Minimal set of capabilities required to run Cygwin. */
  24 #define wincap_minimal wincap_nt4sp4
  25
  26 wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
  27   chunksize:0,
  28   heapslop:0x0,
  29   max_sys_priv:SE_CHANGE_NOTIFY_PRIVILEGE,
  30   is_server:false,
  31   has_dacl_protect:false,
  32   has_broken_if_oper_status:true,
  33   has_physical_mem_access:true,
  34   has_process_io_counters:false,
  35   has_terminal_services:false,
  36   has_create_global_privilege:false,
  37   has_ioctl_storage_get_media_types_ex:false,
  38   has_extended_priority_class:false,
  39   has_guid_volumes:false,
  40   has_disk_ex_ioctls:false,
  41   has_fileid_dirinfo:false,
  42   has_buggy_restart_scan:false,
  43   has_mandatory_integrity_control:false,
  44   needs_logon_sid_in_sid_list:true,
  45   needs_count_in_si_lpres2:false,
  46   has_recycle_dot_bin:false,
  47   has_gaa_prefixes:false,
  48   has_gaa_on_link_prefix:false,
  49   supports_all_posix_ai_flags:false,
  50   has_restricted_stack_args:false,
  51   has_transactions:false,
  52   ts_has_dep_problem:false,
  53   has_recvmsg:false,
  54   has_sendmsg:false,
  55   has_broken_udf:false,
  56   has_console_handle_problem:false,
  57   has_broken_alloc_console:false,
  58   has_always_all_codepages:false,
  59   has_localenames:false,
  60   has_mwmo_inputavailable:false,
  61   has_buggy_thread_startup:false,
  62   has_fast_cwd:false,
  63   has_restricted_raw_disk_access:false,
  64   use_dont_resolve_hack:false,
  65 };
  66
  67 wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
  68   chunksize:0,
  69   heapslop:0x0,
  70   max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  71   is_server:false,
  72   has_dacl_protect:true,
  73   has_broken_if_oper_status:false,
  74   has_physical_mem_access:true,
  75   has_process_io_counters:true,
  76   has_terminal_services:true,
  77   has_create_global_privilege:false,
  78   has_ioctl_storage_get_media_types_ex:false,
  79   has_extended_priority_class:true,
  80   has_guid_volumes:true,
  81   has_disk_ex_ioctls:false,
  82   has_fileid_dirinfo:true,
  83   has_buggy_restart_scan:true,
  84   has_mandatory_integrity_control:false,
  85   needs_logon_sid_in_sid_list:true,
  86   needs_count_in_si_lpres2:false,
  87   has_recycle_dot_bin:false,
  88   has_gaa_prefixes:false,
  89   has_gaa_on_link_prefix:false,
  90   supports_all_posix_ai_flags:false,
  91   has_restricted_stack_args:false,
  92   has_transactions:false,
  93   ts_has_dep_problem:false,
  94   has_recvmsg:false,
  95   has_sendmsg:false,
  96   has_broken_udf:true,
  97   has_console_handle_problem:false,
  98   has_broken_alloc_console:false,
  99   has_always_all_codepages:false,
 100   has_localenames:false,
 101   has_mwmo_inputavailable:true,
 102   has_buggy_thread_startup:false,
 103   has_fast_cwd:false,
 104   has_restricted_raw_disk_access:false,
 105   use_dont_resolve_hack:false,
 106 };
 107
 108 wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
 109   chunksize:0,
 110   heapslop:0x0,
 111   max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
 112   is_server:false,
 113   has_dacl_protect:true,
 114   has_broken_if_oper_status:false,
 115   has_physical_mem_access:true,
 116   has_process_io_counters:true,
 117   has_terminal_services:true,
 118   has_create_global_privilege:true,
 119   has_ioctl_storage_get_media_types_ex:false,
 120   has_extended_priority_class:true,
 121   has_guid_volumes:true,
 122   has_disk_ex_ioctls:false,
 123   has_fileid_dirinfo:true,
 124   has_buggy_restart_scan:true,
 125   has_mandatory_integrity_control:false,
 126   needs_logon_sid_in_sid_list:true,
 127   needs_count_in_si_lpres2:false,
 128   has_recycle_dot_bin:false,
 129   has_gaa_prefixes:false,
 130   has_gaa_on_link_prefix:false,
 131   supports_all_posix_ai_flags:false,
 132   has_restricted_stack_args:false,
 133   has_transactions:false,
 134   ts_has_dep_problem:false,
 135   has_recvmsg:false,
 136   has_sendmsg:false,
 137   has_broken_udf:true,
 138   has_console_handle_problem:false,
 139   has_broken_alloc_console:false,
 140   has_always_all_codepages:false,
 141   has_localenames:false,
 142   has_mwmo_inputavailable:true,
 143   has_buggy_thread_startup:false,
 144   has_fast_cwd:false,
 145   has_restricted_raw_disk_access:false,
 146   use_dont_resolve_hack:false,
 147 };
 148
 149 wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
 150   chunksize:0,
 151   heapslop:0x0,
 152   max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
 153   is_server:false,
 154   has_dacl_protect:true,
 155   has_broken_if_oper_status:false,
 156   has_physical_mem_access:true,
 157   has_process_io_counters:true,
 158   has_terminal_services:true,
 159   has_create_global_privilege:false,
 160   has_ioctl_storage_get_media_types_ex:true,
 161   has_extended_priority_class:true,
 162   has_guid_volumes:true,
 163   has_disk_ex_ioctls:true,
 164   has_fileid_dirinfo:true,
 165   has_buggy_restart_scan:false,
 166   has_mandatory_integrity_control:false,
 167   needs_logon_sid_in_sid_list:false,
 168   needs_count_in_si_lpres2:false,
 169   has_recycle_dot_bin:false,
 170   has_gaa_prefixes:false,
 171   has_gaa_on_link_prefix:false,
 172   supports_all_posix_ai_flags:false,
 173   has_restricted_stack_args:false,
 174   has_transactions:false,
 175   ts_has_dep_problem:false,
 176   has_recvmsg:true,
 177   has_sendmsg:false,
 178   has_broken_udf:true,
 179   has_console_handle_problem:false,
 180   has_broken_alloc_console:false,
 181   has_always_all_codepages:false,
 182   has_localenames:false,
 183   has_mwmo_inputavailable:true,
 184   has_buggy_thread_startup:false,
 185   has_fast_cwd:false,
 186   has_restricted_raw_disk_access:false,
 187   use_dont_resolve_hack:true,
 188 };
 189
 190 wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
 191   chunksize:0,
 192   heapslop:0x0,
 193   max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
 194   is_server:false,
 195   has_dacl_protect:true,
 196   has_broken_if_oper_status:false,
 197   has_physical_mem_access:true,
 198   has_process_io_counters:true,
 199   has_terminal_services:true,
 200   has_create_global_privilege:false,
 201   has_ioctl_storage_get_media_types_ex:true,
 202   has_extended_priority_class:true,
 203   has_guid_volumes:true,
 204   has_disk_ex_ioctls:true,
 205   has_fileid_dirinfo:true,
 206   has_buggy_restart_scan:false,
 207   has_mandatory_integrity_control:false,
 208   needs_logon_sid_in_sid_list:false,
 209   needs_count_in_si_lpres2:false,
 210   has_recycle_dot_bin:false,
 211   has_gaa_prefixes:true,
 212   has_gaa_on_link_prefix:false,
 213   supports_all_posix_ai_flags:false,
 214   has_restricted_stack_args:false,
 215   has_transactions:false,
 216   ts_has_dep_problem:false,
 217   has_recvmsg:true,
 218   has_sendmsg:false,
 219   has_broken_udf:true,
 220   has_console_handle_problem:false,
 221   has_broken_alloc_console:false,
 222   has_always_all_codepages:false,
 223   has_localenames:false,
 224   has_mwmo_inputavailable:true,
 225   has_buggy_thread_startup:false,
 226   has_fast_cwd:false,
 227   has_restricted_raw_disk_access:false,
 228   use_dont_resolve_hack:true,
 229 };
 230
 231 wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
 232   chunksize:0,
 233   heapslop:0x0,
 234   max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
 235   is_server:false,
 236   has_dacl_protect:true,
 237   has_broken_if_oper_status:false,
 238   has_physical_mem_access:true,
 239   has_process_io_counters:true,
 240   has_terminal_services:true,
 241   has_create_global_privilege:true,
 242   has_ioctl_storage_get_media_types_ex:true,
 243   has_extended_priority_class:true,
 244   has_guid_volumes:true,
 245   has_disk_ex_ioctls:true,
 246   has_fileid_dirinfo:true,
 247   has_buggy_restart_scan:false,
 248   has_mandatory_integrity_control:false,
 249   needs_logon_sid_in_sid_list:false,
 250   needs_count_in_si_lpres2:false,
 251   has_recycle_dot_bin:false,
 252   has_gaa_prefixes:true,
 253   has_gaa_on_link_prefix:false,
 254   supports_all_posix_ai_flags:false,
 255   has_restricted_stack_args:false,
 256   has_transactions:false,
 257   ts_has_dep_problem:false,
 258   has_recvmsg:true,
 259   has_sendmsg:false,
 260   has_broken_udf:true,
 261   has_console_handle_problem:false,
 262   has_broken_alloc_console:false,
 263   has_always_all_codepages:false,
 264   has_localenames:false,
 265   has_mwmo_inputavailable:true,
 266   has_buggy_thread_startup:false,
 267   has_fast_cwd:false,
 268   has_restricted_raw_disk_access:false,
 269   use_dont_resolve_hack:true,
 270 };
 271
 272 wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
 273   chunksize:0,
 274   heapslop:0x4,
 275   max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
 276   is_server:true,
 277   has_dacl_protect:true,
 278   has_broken_if_oper_status:false,
 279   has_physical_mem_access:false,
 280   has_process_io_counters:true,
 281   has_terminal_services:true,
 282   has_create_global_privilege:true,
 283   has_ioctl_storage_get_media_types_ex:true,
 284   has_extended_priority_class:true,
 285   has_guid_volumes:true,
 286   has_disk_ex_ioctls:true,
 287   has_fileid_dirinfo:true,
 288   has_buggy_restart_scan:false,
 289   has_mandatory_integrity_control:false,
 290   needs_logon_sid_in_sid_list:false,
 291   needs_count_in_si_lpres2:false,
 292   has_recycle_dot_bin:false,
 293   has_gaa_prefixes:true,
 294   has_gaa_on_link_prefix:false,
 295   supports_all_posix_ai_flags:false,
 296   has_restricted_stack_args:true,
 297   has_transactions:false,
 298   ts_has_dep_problem:false,
 299   has_recvmsg:true,
 300   has_sendmsg:false,
 301   has_broken_udf:true,
 302   has_console_handle_problem:false,
 303   has_broken_alloc_console:false,
 304   has_always_all_codepages:false,
 305   has_localenames:false,
 306   has_mwmo_inputavailable:true,
 307   has_buggy_thread_startup:false,
 308   has_fast_cwd:false,
 309   has_restricted_raw_disk_access:false,
 310   use_dont_resolve_hack:false,
 311 };
 312
 313 wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
 314   chunksize:0,
 315   heapslop:0x4,
 316   max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
 317   is_server:false,
 318   has_dacl_protect:true,
 319   has_broken_if_oper_status:false,
 320   has_physical_mem_access:false,
 321   has_process_io_counters:true,
 322   has_terminal_services:true,
 323   has_create_global_privilege:true,
 324   has_ioctl_storage_get_media_types_ex:true,
 325   has_extended_priority_class:true,
 326   has_guid_volumes:true,
 327   has_disk_ex_ioctls:true,
 328   has_fileid_dirinfo:true,
 329   has_buggy_restart_scan:false,
 330   has_mandatory_integrity_control:true,
 331   needs_logon_sid_in_sid_list:false,
 332   needs_count_in_si_lpres2:true,
 333   has_recycle_dot_bin:true,
 334   has_gaa_prefixes:true,
 335   has_gaa_on_link_prefix:true,
 336   supports_all_posix_ai_flags:true,
 337   has_restricted_stack_args:false,
 338   has_transactions:true,
 339   ts_has_dep_problem:false,
 340   has_recvmsg:true,
 341   has_sendmsg:true,
 342   has_broken_udf:false,
 343   has_console_handle_problem:false,
 344   has_broken_alloc_console:false,
 345   has_always_all_codepages:true,
 346   has_localenames:true,
 347   has_mwmo_inputavailable:true,
 348   has_buggy_thread_startup:true,
 349   has_fast_cwd:true,
 350   has_restricted_raw_disk_access:true,
 351   use_dont_resolve_hack:false,
 352 };
 353
 354 wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
 355   chunksize:0,
 356   heapslop:0x4,
 357   max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
 358   is_server:false,
 359   has_dacl_protect:true,
 360   has_broken_if_oper_status:false,
 361   has_physical_mem_access:false,
 362   has_process_io_counters:true,
 363   has_terminal_services:true,
 364   has_create_global_privilege:true,
 365   has_ioctl_storage_get_media_types_ex:true,
 366   has_extended_priority_class:true,
 367   has_guid_volumes:true,
 368   has_disk_ex_ioctls:true,
 369   has_fileid_dirinfo:true,
 370   has_buggy_restart_scan:false,
 371   has_mandatory_integrity_control:true,
 372   needs_logon_sid_in_sid_list:false,
 373   needs_count_in_si_lpres2:false,
 374   has_recycle_dot_bin:true,
 375   has_gaa_prefixes:true,
 376   has_gaa_on_link_prefix:true,
 377   supports_all_posix_ai_flags:true,
 378   has_restricted_stack_args:false,
 379   has_transactions:true,
 380   ts_has_dep_problem:false,
 381   has_recvmsg:true,
 382   has_sendmsg:true,
 383   has_broken_udf:false,
 384   has_console_handle_problem:true,
 385   has_broken_alloc_console:true,
 386   has_always_all_codepages:true,
 387   has_localenames:true,
 388   has_mwmo_inputavailable:true,
 389   has_buggy_thread_startup:false,
 390   has_fast_cwd:true,
 391   has_restricted_raw_disk_access:true,
 392   use_dont_resolve_hack:false,
 393 };
 394
 395 wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
 396
 397 void
 398 wincapc::init ()
 399 {
 400   bool has_osversioninfoex = true;
 401
 402   if (caps)
 403     return;             // already initialized
 404
 405   memset (&version, 0, sizeof version);
 406   /* Request versionex info first, which is available on all systems since
 407      NT4 SP6 anyway.  If that fails, call the simple version. */
 408   version.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEX);
 409   if (!GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version)))
 410     {
 411       has_osversioninfoex = false;
 412       version.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
 413       GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version));
 414     }
 415
 416   switch (version.dwPlatformId)
 417     {
 418       case VER_PLATFORM_WIN32_NT:
 419         switch (version.dwMajorVersion)
 420           {
 421             case 4:
 422               /* No mercy.  We require at least NT4 SP4. */
 423               caps = &wincap_nt4sp4;
 424               break;
 425             case 5:
 426               switch (version.dwMinorVersion)
 427                 {
 428                   case 0:
 429                     if (version.wServicePackMajor < 4)
 430                       caps = &wincap_2000;
 431                     else
 432                       caps = &wincap_2000sp4;
 433                     break;
 434
 435                   case 1:
 436                     caps = &wincap_xp;
 437                     switch (version.wServicePackMajor)
 438                       {
 439                       case 0:
 440                         caps = &wincap_xp;
 441                       case 1:
 442                         caps = &wincap_xpsp1;
 443                       default:
 444                         caps = &wincap_xpsp2;
 445                       }
 446                     break;
 447
 448                   default:
 449                     caps = &wincap_2003;
 450                 }
 451               break;
 452             case 6:
 453               switch (version.dwMinorVersion)
 454                 {
 455                   case 0:
 456                     caps = &wincap_vista;
 457                     break;
 458                   default:
 459                     caps = &wincap_7;
 460                     break;
 461                 }
 462               break;
 463             default:
 464               caps = &wincap_minimal;
 465               break;
 466           }
 467         break;
 468       case VER_PLATFORM_WIN32_WINDOWS:
 469         /* I'd be very surprised if this code is ever hit, but it doesn't
 470            hurt to keep it. */
 471         api_fatal ("Windows 95/98/Me are not supported.");
 472         break;
 473       default:
 474         caps = &wincap_minimal;
 475         break;
 476     }
 477
 478   if (has_osversioninfoex && version.wProductType != VER_NT_WORKSTATION)
 479     {
 480       ((wincaps *)caps)->is_server = true;
 481       if (version.dwMajorVersion >= 6
 482           && (version.wSuiteMask
 483               & (VER_SUITE_TERMINAL | VER_SUITE_SINGLEUSERTS))
 484              == VER_SUITE_TERMINAL)
 485         ((wincaps *)caps)->ts_has_dep_problem = true;
 486     }
 487   if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
 488                                              ProcessWow64Information,
 489                                              &wow64, sizeof wow64, NULL))
 490       && !wow64)
 491     {
 492       ((wincaps *)caps)->needs_count_in_si_lpres2 = false;
 493       ((wincaps *)caps)->has_restricted_stack_args = false;
 494     }
 495
 496   if (!wow64)
 497     ((wincaps *) caps)->has_buggy_thread_startup = false;
 498   __small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
 499                    version.dwMinorVersion);
 500 }
 501
 502 void
 503 wincapc::set_chunksize (DWORD nchunksize)
 504 {
 505   ((wincaps *)caps)->chunksize = nchunksize;
 506 }