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 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_enhanced_socket_security:false,
  43   has_buggy_restart_scan:false,
  44   has_mandatory_integrity_control:false,
  45   needs_logon_sid_in_sid_list:true,
  46   needs_count_in_si_lpres2:false,
  47   has_recycle_dot_bin:false,
  48   has_gaa_prefixes:false,
  49   has_gaa_on_link_prefix:false,
  50   supports_all_posix_ai_flags:false,
  51   has_restricted_stack_args:false,
  52   has_transactions:false,
  53   ts_has_dep_problem:false,
  54   has_recvmsg:false,
  55   has_sendmsg:false,
  56   has_broken_udf:false,
  57   has_console_handle_problem:false,
  58   has_broken_alloc_console:false,
  59   has_always_all_codepages:false,
  60   has_localenames:false,
  61   has_mwmo_inputavailable:false,
  62   has_buggy_thread_startup:false,
  63   has_fast_cwd:false,
  64 };
  65
  66 wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
  67   chunksize:0,
  68   heapslop:0x0,
  69   max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
  70   is_server:false,
  71   has_dacl_protect:true,
  72   has_broken_if_oper_status:false,
  73   has_physical_mem_access:true,
  74   has_process_io_counters:true,
  75   has_terminal_services:true,
  76   has_create_global_privilege:false,
  77   has_ioctl_storage_get_media_types_ex:false,
  78   has_extended_priority_class:true,
  79   has_guid_volumes:true,
  80   has_disk_ex_ioctls:false,
  81   has_fileid_dirinfo:true,
  82   has_enhanced_socket_security:false,
  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 };
 105
 106 wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
 107   chunksize:0,
 108   heapslop:0x0,
 109   max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
 110   is_server:false,
 111   has_dacl_protect:true,
 112   has_broken_if_oper_status:false,
 113   has_physical_mem_access:true,
 114   has_process_io_counters:true,
 115   has_terminal_services:true,
 116   has_create_global_privilege:true,
 117   has_ioctl_storage_get_media_types_ex:false,
 118   has_extended_priority_class:true,
 119   has_guid_volumes:true,
 120   has_disk_ex_ioctls:false,
 121   has_fileid_dirinfo:true,
 122   has_enhanced_socket_security:false,
 123   has_buggy_restart_scan:true,
 124   has_mandatory_integrity_control:false,
 125   needs_logon_sid_in_sid_list:true,
 126   needs_count_in_si_lpres2:false,
 127   has_recycle_dot_bin:false,
 128   has_gaa_prefixes:false,
 129   has_gaa_on_link_prefix:false,
 130   supports_all_posix_ai_flags:false,
 131   has_restricted_stack_args:false,
 132   has_transactions:false,
 133   ts_has_dep_problem:false,
 134   has_recvmsg:false,
 135   has_sendmsg:false,
 136   has_broken_udf:true,
 137   has_console_handle_problem:false,
 138   has_broken_alloc_console:false,
 139   has_always_all_codepages:false,
 140   has_localenames:false,
 141   has_mwmo_inputavailable:true,
 142   has_buggy_thread_startup:false,
 143   has_fast_cwd:false,
 144 };
 145
 146 wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
 147   chunksize:0,
 148   heapslop:0x0,
 149   max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
 150   is_server:false,
 151   has_dacl_protect:true,
 152   has_broken_if_oper_status:false,
 153   has_physical_mem_access:true,
 154   has_process_io_counters:true,
 155   has_terminal_services:true,
 156   has_create_global_privilege:false,
 157   has_ioctl_storage_get_media_types_ex:true,
 158   has_extended_priority_class:true,
 159   has_guid_volumes:true,
 160   has_disk_ex_ioctls:true,
 161   has_fileid_dirinfo:true,
 162   has_enhanced_socket_security:false,
 163   has_buggy_restart_scan:false,
 164   has_mandatory_integrity_control:false,
 165   needs_logon_sid_in_sid_list:false,
 166   needs_count_in_si_lpres2:false,
 167   has_recycle_dot_bin:false,
 168   has_gaa_prefixes:false,
 169   has_gaa_on_link_prefix:false,
 170   supports_all_posix_ai_flags:false,
 171   has_restricted_stack_args:false,
 172   has_transactions:false,
 173   ts_has_dep_problem:false,
 174   has_recvmsg:true,
 175   has_sendmsg:false,
 176   has_broken_udf:true,
 177   has_console_handle_problem:false,
 178   has_broken_alloc_console:false,
 179   has_always_all_codepages:false,
 180   has_localenames:false,
 181   has_mwmo_inputavailable:true,
 182   has_buggy_thread_startup:false,
 183   has_fast_cwd:false,
 184 };
 185
 186 wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
 187   chunksize:0,
 188   heapslop:0x0,
 189   max_sys_priv:SE_MANAGE_VOLUME_PRIVILEGE,
 190   is_server:false,
 191   has_dacl_protect:true,
 192   has_broken_if_oper_status:false,
 193   has_physical_mem_access:true,
 194   has_process_io_counters:true,
 195   has_terminal_services:true,
 196   has_create_global_privilege:false,
 197   has_ioctl_storage_get_media_types_ex:true,
 198   has_extended_priority_class:true,
 199   has_guid_volumes:true,
 200   has_disk_ex_ioctls:true,
 201   has_fileid_dirinfo:true,
 202   has_enhanced_socket_security:false,
 203   has_buggy_restart_scan:false,
 204   has_mandatory_integrity_control:false,
 205   needs_logon_sid_in_sid_list:false,
 206   needs_count_in_si_lpres2:false,
 207   has_recycle_dot_bin:false,
 208   has_gaa_prefixes:true,
 209   has_gaa_on_link_prefix:false,
 210   supports_all_posix_ai_flags:false,
 211   has_restricted_stack_args:false,
 212   has_transactions:false,
 213   ts_has_dep_problem:false,
 214   has_recvmsg:true,
 215   has_sendmsg:false,
 216   has_broken_udf:true,
 217   has_console_handle_problem:false,
 218   has_broken_alloc_console:false,
 219   has_always_all_codepages:false,
 220   has_localenames:false,
 221   has_mwmo_inputavailable:true,
 222   has_buggy_thread_startup:false,
 223   has_fast_cwd:false,
 224 };
 225
 226 wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
 227   chunksize:0,
 228   heapslop:0x0,
 229   max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
 230   is_server:false,
 231   has_dacl_protect:true,
 232   has_broken_if_oper_status:false,
 233   has_physical_mem_access:true,
 234   has_process_io_counters:true,
 235   has_terminal_services:true,
 236   has_create_global_privilege:true,
 237   has_ioctl_storage_get_media_types_ex:true,
 238   has_extended_priority_class:true,
 239   has_guid_volumes:true,
 240   has_disk_ex_ioctls:true,
 241   has_fileid_dirinfo:true,
 242   has_enhanced_socket_security:false,
 243   has_buggy_restart_scan:false,
 244   has_mandatory_integrity_control:false,
 245   needs_logon_sid_in_sid_list:false,
 246   needs_count_in_si_lpres2:false,
 247   has_recycle_dot_bin:false,
 248   has_gaa_prefixes:true,
 249   has_gaa_on_link_prefix:false,
 250   supports_all_posix_ai_flags:false,
 251   has_restricted_stack_args:false,
 252   has_transactions:false,
 253   ts_has_dep_problem:false,
 254   has_recvmsg:true,
 255   has_sendmsg:false,
 256   has_broken_udf:true,
 257   has_console_handle_problem:false,
 258   has_broken_alloc_console:false,
 259   has_always_all_codepages:false,
 260   has_localenames:false,
 261   has_mwmo_inputavailable:true,
 262   has_buggy_thread_startup:false,
 263   has_fast_cwd:false,
 264 };
 265
 266 wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
 267   chunksize:0,
 268   heapslop:0x4,
 269   max_sys_priv:SE_CREATE_GLOBAL_PRIVILEGE,
 270   is_server:true,
 271   has_dacl_protect:true,
 272   has_broken_if_oper_status:false,
 273   has_physical_mem_access:false,
 274   has_process_io_counters:true,
 275   has_terminal_services:true,
 276   has_create_global_privilege:true,
 277   has_ioctl_storage_get_media_types_ex:true,
 278   has_extended_priority_class:true,
 279   has_guid_volumes:true,
 280   has_disk_ex_ioctls:true,
 281   has_fileid_dirinfo:true,
 282   has_enhanced_socket_security:true,
 283   has_buggy_restart_scan:false,
 284   has_mandatory_integrity_control:false,
 285   needs_logon_sid_in_sid_list:false,
 286   needs_count_in_si_lpres2:false,
 287   has_recycle_dot_bin:false,
 288   has_gaa_prefixes:true,
 289   has_gaa_on_link_prefix:false,
 290   supports_all_posix_ai_flags:false,
 291   has_restricted_stack_args:true,
 292   has_transactions:false,
 293   ts_has_dep_problem:false,
 294   has_recvmsg:true,
 295   has_sendmsg:false,
 296   has_broken_udf:true,
 297   has_console_handle_problem:false,
 298   has_broken_alloc_console:false,
 299   has_always_all_codepages:false,
 300   has_localenames:false,
 301   has_mwmo_inputavailable:true,
 302   has_buggy_thread_startup:false,
 303   has_fast_cwd:false,
 304 };
 305
 306 wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
 307   chunksize:0,
 308   heapslop:0x4,
 309   max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
 310   is_server:false,
 311   has_dacl_protect:true,
 312   has_broken_if_oper_status:false,
 313   has_physical_mem_access:false,
 314   has_process_io_counters:true,
 315   has_terminal_services:true,
 316   has_create_global_privilege:true,
 317   has_ioctl_storage_get_media_types_ex:true,
 318   has_extended_priority_class:true,
 319   has_guid_volumes:true,
 320   has_disk_ex_ioctls:true,
 321   has_fileid_dirinfo:true,
 322   has_enhanced_socket_security:true,
 323   has_buggy_restart_scan:false,
 324   has_mandatory_integrity_control:true,
 325   needs_logon_sid_in_sid_list:false,
 326   needs_count_in_si_lpres2:true,
 327   has_recycle_dot_bin:true,
 328   has_gaa_prefixes:true,
 329   has_gaa_on_link_prefix:true,
 330   supports_all_posix_ai_flags:true,
 331   has_restricted_stack_args:false,
 332   has_transactions:true,
 333   ts_has_dep_problem:false,
 334   has_recvmsg:true,
 335   has_sendmsg:true,
 336   has_broken_udf:false,
 337   has_console_handle_problem:false,
 338   has_broken_alloc_console:false,
 339   has_always_all_codepages:true,
 340   has_localenames:true,
 341   has_mwmo_inputavailable:true,
 342   has_buggy_thread_startup:true,
 343   has_fast_cwd:true,
 344 };
 345
 346 wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
 347   chunksize:0,
 348   heapslop:0x4,
 349   max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
 350   is_server:false,
 351   has_dacl_protect:true,
 352   has_broken_if_oper_status:false,
 353   has_physical_mem_access:false,
 354   has_process_io_counters:true,
 355   has_terminal_services:true,
 356   has_create_global_privilege:true,
 357   has_ioctl_storage_get_media_types_ex:true,
 358   has_extended_priority_class:true,
 359   has_guid_volumes:true,
 360   has_disk_ex_ioctls:true,
 361   has_fileid_dirinfo:true,
 362   has_enhanced_socket_security:true,
 363   has_buggy_restart_scan:false,
 364   has_mandatory_integrity_control:true,
 365   needs_logon_sid_in_sid_list:false,
 366   needs_count_in_si_lpres2:false,
 367   has_recycle_dot_bin:true,
 368   has_gaa_prefixes:true,
 369   has_gaa_on_link_prefix:true,
 370   supports_all_posix_ai_flags:true,
 371   has_restricted_stack_args:false,
 372   has_transactions:true,
 373   ts_has_dep_problem:false,
 374   has_recvmsg:true,
 375   has_sendmsg:true,
 376   has_broken_udf:false,
 377   has_console_handle_problem:true,
 378   has_broken_alloc_console:true,
 379   has_always_all_codepages:true,
 380   has_localenames:true,
 381   has_mwmo_inputavailable:true,
 382   has_buggy_thread_startup:false,
 383   has_fast_cwd:true,
 384 };
 385
 386 wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
 387
 388 void
 389 wincapc::init ()
 390 {
 391   bool has_osversioninfoex = true;
 392
 393   if (caps)
 394     return;             // already initialized
 395
 396   memset (&version, 0, sizeof version);
 397   /* Request versionex info first, which is available on all systems since
 398      NT4 SP6 anyway.  If that fails, call the simple version. */
 399   version.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEX);
 400   if (!GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version)))
 401     {
 402       has_osversioninfoex = false;
 403       version.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
 404       GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version));
 405     }
 406
 407   switch (version.dwPlatformId)
 408     {
 409       case VER_PLATFORM_WIN32_NT:
 410         switch (version.dwMajorVersion)
 411           {
 412             case 4:
 413               /* No mercy.  We require at least NT4 SP4. */
 414               caps = &wincap_nt4sp4;
 415               break;
 416             case 5:
 417               switch (version.dwMinorVersion)
 418                 {
 419                   case 0:
 420                     if (version.wServicePackMajor < 4)
 421                       caps = &wincap_2000;
 422                     else
 423                       caps = &wincap_2000sp4;
 424                     break;
 425
 426                   case 1:
 427                     caps = &wincap_xp;
 428                     switch (version.wServicePackMajor)
 429                       {
 430                       case 0:
 431                         caps = &wincap_xp;
 432                       case 1:
 433                         caps = &wincap_xpsp1;
 434                       default:
 435                         caps = &wincap_xpsp2;
 436                       }
 437                     break;
 438
 439                   default:
 440                     caps = &wincap_2003;
 441                 }
 442               break;
 443             case 6:
 444               switch (version.dwMinorVersion)
 445                 {
 446                   case 0:
 447                     caps = &wincap_vista;
 448                     break;
 449                   default:
 450                     caps = &wincap_7;
 451                     break;
 452                 }
 453               break;
 454             default:
 455               caps = &wincap_minimal;
 456               break;
 457           }
 458         break;
 459       case VER_PLATFORM_WIN32_WINDOWS:
 460         /* I'd be very surprised if this code is ever hit, but it doesn't
 461            hurt to keep it. */
 462         api_fatal ("Windows 95/98/Me are not supported.");
 463         break;
 464       default:
 465         caps = &wincap_minimal;
 466         break;
 467     }
 468
 469   if (has_osversioninfoex && version.wProductType != VER_NT_WORKSTATION)
 470     {
 471       ((wincaps *)caps)->is_server = true;
 472       if (version.dwMajorVersion >= 6
 473           && (version.wSuiteMask
 474               & (VER_SUITE_TERMINAL | VER_SUITE_SINGLEUSERTS))
 475              == VER_SUITE_TERMINAL)
 476         ((wincaps *)caps)->ts_has_dep_problem = true;
 477     }
 478   if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
 479                                              ProcessWow64Information,
 480                                              &wow64, sizeof wow64, NULL))
 481       && !wow64)
 482     {
 483       ((wincaps *)caps)->needs_count_in_si_lpres2 = false;
 484       ((wincaps *)caps)->has_restricted_stack_args = false;
 485     }
 486
 487   if (!wow64)
 488     ((wincaps *) caps)->has_buggy_thread_startup = false;
 489   __small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
 490                    version.dwMinorVersion);
 491 }
 492
 493 void
 494 wincapc::set_chunksize (DWORD nchunksize)
 495 {
 496   ((wincaps *)caps)->chunksize = nchunksize;
 497 }