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 This file is part of Cygwin.
   5
   6 This software is a copyrighted work licensed under the terms of the
   7 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   8 details. */
   9
  10 #include "winsup.h"
  11 #include "miscfuncs.h"
  12 #include "security.h"
  13 #include "ntdll.h"
  14
  15 /* CV, 2008-10-23: All wincapc's have to be in the .cygwin_dll_common section,
  16    same as wincap itself.  Otherwise the capability changes made in
  17    wincapc::init() are not propagated to any subsequently started process
  18    in the same session.  I'm only writing this longish comment because I'm
  19    puzzled that this has never been noticed before... */
  20
  21 wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
  22   def_guard_pages:1,
  23   mmap_storage_high:0x070000000000LL,
  24   {
  25     is_server:false,
  26     needs_count_in_si_lpres2:true,
  27     needs_query_information:true,
  28     has_gaa_largeaddress_bug:true,
  29     has_broken_alloc_console:false,
  30     has_console_logon_sid:false,
  31     has_precise_system_time:false,
  32     has_microsoft_accounts:false,
  33     has_processor_groups:false,
  34     has_broken_prefetchvm:false,
  35     has_new_pebteb_region:false,
  36     has_broken_whoami:true,
  37     has_unprivileged_createsymlink:false,
  38     has_unbiased_interrupt_time:false,
  39     has_precise_interrupt_time:false,
  40     has_posix_unlink_semantics:false,
  41     has_case_sensitive_dirs:false,
  42     has_posix_rename_semantics:false,
  43     no_msv1_0_s4u_logon_in_wow64:true,
  44     has_con_24bit_colors:false,
  45     has_con_broken_csi3j:false,
  46     has_con_broken_il_dl:false,
  47     has_con_esc_rep:false,
  48     has_extended_mem_api:false,
  49     has_tcp_fastopen:false,
  50     has_linux_tcp_keepalive_sockopts:false,
  51     has_tcp_maxrtms:false,
  52   },
  53 };
  54
  55 wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
  56   def_guard_pages:1,
  57   mmap_storage_high:0x070000000000LL,
  58   {
  59     is_server:false,
  60     needs_count_in_si_lpres2:false,
  61     needs_query_information:true,
  62     has_gaa_largeaddress_bug:true,
  63     has_broken_alloc_console:true,
  64     has_console_logon_sid:true,
  65     has_precise_system_time:false,
  66     has_microsoft_accounts:false,
  67     has_processor_groups:true,
  68     has_broken_prefetchvm:false,
  69     has_new_pebteb_region:false,
  70     has_broken_whoami:true,
  71     has_unprivileged_createsymlink:false,
  72     has_unbiased_interrupt_time:true,
  73     has_precise_interrupt_time:false,
  74     has_posix_unlink_semantics:false,
  75     has_case_sensitive_dirs:false,
  76     has_posix_rename_semantics:false,
  77     no_msv1_0_s4u_logon_in_wow64:true,
  78     has_con_24bit_colors:false,
  79     has_con_broken_csi3j:false,
  80     has_con_broken_il_dl:false,
  81     has_con_esc_rep:false,
  82     has_extended_mem_api:false,
  83     has_tcp_fastopen:false,
  84     has_linux_tcp_keepalive_sockopts:false,
  85     has_tcp_maxrtms:false,
  86   },
  87 };
  88
  89 wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
  90   def_guard_pages:2,
  91   mmap_storage_high:0x070000000000LL,
  92   {
  93     is_server:false,
  94     needs_count_in_si_lpres2:false,
  95     needs_query_information:true,
  96     has_gaa_largeaddress_bug:false,
  97     has_broken_alloc_console:true,
  98     has_console_logon_sid:true,
  99     has_precise_system_time:true,
 100     has_microsoft_accounts:true,
 101     has_processor_groups:true,
 102     has_broken_prefetchvm:false,
 103     has_new_pebteb_region:false,
 104     has_broken_whoami:false,
 105     has_unprivileged_createsymlink:false,
 106     has_unbiased_interrupt_time:true,
 107     has_precise_interrupt_time:false,
 108     has_posix_unlink_semantics:false,
 109     has_case_sensitive_dirs:false,
 110     has_posix_rename_semantics:false,
 111     no_msv1_0_s4u_logon_in_wow64:false,
 112     has_con_24bit_colors:false,
 113     has_con_broken_csi3j:false,
 114     has_con_broken_il_dl:false,
 115     has_con_esc_rep:false,
 116     has_extended_mem_api:false,
 117     has_tcp_fastopen:false,
 118     has_linux_tcp_keepalive_sockopts:false,
 119     has_tcp_maxrtms:false,
 120   },
 121 };
 122
 123 wincaps wincap_8_1 __attribute__((section (".cygwin_dll_common"), shared)) = {
 124   def_guard_pages:2,
 125   mmap_storage_high:0x700000000000LL,
 126   {
 127     is_server:false,
 128     needs_count_in_si_lpres2:false,
 129     needs_query_information:false,
 130     has_gaa_largeaddress_bug:false,
 131     has_broken_alloc_console:true,
 132     has_console_logon_sid:true,
 133     has_precise_system_time:true,
 134     has_microsoft_accounts:true,
 135     has_processor_groups:true,
 136     has_broken_prefetchvm:false,
 137     has_new_pebteb_region:false,
 138     has_broken_whoami:false,
 139     has_unprivileged_createsymlink:false,
 140     has_unbiased_interrupt_time:true,
 141     has_precise_interrupt_time:false,
 142     has_posix_unlink_semantics:false,
 143     has_case_sensitive_dirs:false,
 144     has_posix_rename_semantics:false,
 145     no_msv1_0_s4u_logon_in_wow64:false,
 146     has_con_24bit_colors:false,
 147     has_con_broken_csi3j:false,
 148     has_con_broken_il_dl:false,
 149     has_con_esc_rep:false,
 150     has_extended_mem_api:false,
 151     has_tcp_fastopen:false,
 152     has_linux_tcp_keepalive_sockopts:false,
 153     has_tcp_maxrtms:false,
 154   },
 155 };
 156
 157 wincaps  wincap_10_1507 __attribute__((section (".cygwin_dll_common"), shared)) = {
 158   def_guard_pages:2,
 159   mmap_storage_high:0x700000000000LL,
 160   {
 161     is_server:false,
 162     needs_count_in_si_lpres2:false,
 163     needs_query_information:false,
 164     has_gaa_largeaddress_bug:false,
 165     has_broken_alloc_console:true,
 166     has_console_logon_sid:true,
 167     has_precise_system_time:true,
 168     has_microsoft_accounts:true,
 169     has_processor_groups:true,
 170     has_broken_prefetchvm:true,
 171     has_new_pebteb_region:false,
 172     has_broken_whoami:false,
 173     has_unprivileged_createsymlink:false,
 174     has_unbiased_interrupt_time:true,
 175     has_precise_interrupt_time:true,
 176     has_posix_unlink_semantics:false,
 177     has_case_sensitive_dirs:false,
 178     has_posix_rename_semantics:false,
 179     no_msv1_0_s4u_logon_in_wow64:false,
 180     has_con_24bit_colors:false,
 181     has_con_broken_csi3j:false,
 182     has_con_broken_il_dl:false,
 183     has_con_esc_rep:false,
 184     has_extended_mem_api:false,
 185     has_tcp_fastopen:false,
 186     has_linux_tcp_keepalive_sockopts:false,
 187     has_tcp_maxrtms:false,
 188   },
 189 };
 190
 191 wincaps  wincap_10_1607 __attribute__((section (".cygwin_dll_common"), shared)) = {
 192   def_guard_pages:2,
 193   mmap_storage_high:0x700000000000LL,
 194   {
 195     is_server:false,
 196     needs_count_in_si_lpres2:false,
 197     needs_query_information:false,
 198     has_gaa_largeaddress_bug:false,
 199     has_broken_alloc_console:true,
 200     has_console_logon_sid:true,
 201     has_precise_system_time:true,
 202     has_microsoft_accounts:true,
 203     has_processor_groups:true,
 204     has_broken_prefetchvm:true,
 205     has_new_pebteb_region:false,
 206     has_broken_whoami:false,
 207     has_unprivileged_createsymlink:false,
 208     has_unbiased_interrupt_time:true,
 209     has_precise_interrupt_time:true,
 210     has_posix_unlink_semantics:false,
 211     has_case_sensitive_dirs:false,
 212     has_posix_rename_semantics:false,
 213     no_msv1_0_s4u_logon_in_wow64:false,
 214     has_con_24bit_colors:false,
 215     has_con_broken_csi3j:false,
 216     has_con_broken_il_dl:false,
 217     has_con_esc_rep:false,
 218     has_extended_mem_api:false,
 219     has_tcp_fastopen:true,
 220     has_linux_tcp_keepalive_sockopts:false,
 221     has_tcp_maxrtms:true,
 222   },
 223 };
 224
 225 wincaps wincap_10_1703 __attribute__((section (".cygwin_dll_common"), shared)) = {
 226   def_guard_pages:2,
 227   mmap_storage_high:0x700000000000LL,
 228   {
 229     is_server:false,
 230     needs_count_in_si_lpres2:false,
 231     needs_query_information:false,
 232     has_gaa_largeaddress_bug:false,
 233     has_broken_alloc_console:true,
 234     has_console_logon_sid:true,
 235     has_precise_system_time:true,
 236     has_microsoft_accounts:true,
 237     has_processor_groups:true,
 238     has_broken_prefetchvm:false,
 239     has_new_pebteb_region:true,
 240     has_broken_whoami:false,
 241     has_unprivileged_createsymlink:true,
 242     has_unbiased_interrupt_time:true,
 243     has_precise_interrupt_time:true,
 244     has_posix_unlink_semantics:false,
 245     has_case_sensitive_dirs:false,
 246     has_posix_rename_semantics:false,
 247     no_msv1_0_s4u_logon_in_wow64:false,
 248     has_con_24bit_colors:true,
 249     has_con_broken_csi3j:false,
 250     has_con_broken_il_dl:false,
 251     has_con_esc_rep:false,
 252     has_extended_mem_api:false,
 253     has_tcp_fastopen:true,
 254     has_linux_tcp_keepalive_sockopts:false,
 255     has_tcp_maxrtms:true,
 256   },
 257 };
 258
 259 wincaps wincap_10_1709 __attribute__((section (".cygwin_dll_common"), shared)) = {
 260   def_guard_pages:2,
 261   mmap_storage_high:0x700000000000LL,
 262   {
 263     is_server:false,
 264     needs_count_in_si_lpres2:false,
 265     needs_query_information:false,
 266     has_gaa_largeaddress_bug:false,
 267     has_broken_alloc_console:true,
 268     has_console_logon_sid:true,
 269     has_precise_system_time:true,
 270     has_microsoft_accounts:true,
 271     has_processor_groups:true,
 272     has_broken_prefetchvm:false,
 273     has_new_pebteb_region:true,
 274     has_broken_whoami:false,
 275     has_unprivileged_createsymlink:true,
 276     has_unbiased_interrupt_time:true,
 277     has_precise_interrupt_time:true,
 278     has_posix_unlink_semantics:true,
 279     has_case_sensitive_dirs:false,
 280     has_posix_rename_semantics:false,
 281     no_msv1_0_s4u_logon_in_wow64:false,
 282     has_con_24bit_colors:true,
 283     has_con_broken_csi3j:false,
 284     has_con_broken_il_dl:false,
 285     has_con_esc_rep:false,
 286     has_extended_mem_api:false,
 287     has_tcp_fastopen:true,
 288     has_linux_tcp_keepalive_sockopts:true,
 289     has_tcp_maxrtms:true,
 290   },
 291 };
 292
 293 wincaps wincap_10_1803 __attribute__((section (".cygwin_dll_common"), shared)) = {
 294   def_guard_pages:2,
 295   mmap_storage_high:0x700000000000LL,
 296   {
 297     is_server:false,
 298     needs_count_in_si_lpres2:false,
 299     needs_query_information:false,
 300     has_gaa_largeaddress_bug:false,
 301     has_broken_alloc_console:true,
 302     has_console_logon_sid:true,
 303     has_precise_system_time:true,
 304     has_microsoft_accounts:true,
 305     has_processor_groups:true,
 306     has_broken_prefetchvm:false,
 307     has_new_pebteb_region:true,
 308     has_broken_whoami:false,
 309     has_unprivileged_createsymlink:true,
 310     has_unbiased_interrupt_time:true,
 311     has_precise_interrupt_time:true,
 312     has_posix_unlink_semantics:true,
 313     has_case_sensitive_dirs:true,
 314     has_posix_rename_semantics:false,
 315     no_msv1_0_s4u_logon_in_wow64:false,
 316     has_con_24bit_colors:true,
 317     has_con_broken_csi3j:false,
 318     has_con_broken_il_dl:false,
 319     has_con_esc_rep:false,
 320     has_extended_mem_api:true,
 321     has_tcp_fastopen:true,
 322     has_linux_tcp_keepalive_sockopts:true,
 323     has_tcp_maxrtms:true,
 324   },
 325 };
 326
 327 wincaps wincap_10_1809 __attribute__((section (".cygwin_dll_common"), shared)) = {
 328   def_guard_pages:2,
 329   mmap_storage_high:0x700000000000LL,
 330   {
 331     is_server:false,
 332     needs_count_in_si_lpres2:false,
 333     needs_query_information:false,
 334     has_gaa_largeaddress_bug:false,
 335     has_broken_alloc_console:true,
 336     has_console_logon_sid:true,
 337     has_precise_system_time:true,
 338     has_microsoft_accounts:true,
 339     has_processor_groups:true,
 340     has_broken_prefetchvm:false,
 341     has_new_pebteb_region:true,
 342     has_broken_whoami:false,
 343     has_unprivileged_createsymlink:true,
 344     has_unbiased_interrupt_time:true,
 345     has_precise_interrupt_time:true,
 346     has_posix_unlink_semantics:true,
 347     has_case_sensitive_dirs:true,
 348     has_posix_rename_semantics:true,
 349     no_msv1_0_s4u_logon_in_wow64:false,
 350     has_con_24bit_colors:true,
 351     has_con_broken_csi3j:true,
 352     has_con_broken_il_dl:false,
 353     has_con_esc_rep:false,
 354     has_extended_mem_api:true,
 355     has_tcp_fastopen:true,
 356     has_linux_tcp_keepalive_sockopts:true,
 357     has_tcp_maxrtms:true,
 358   },
 359 };
 360
 361 wincaps wincap_10_1903 __attribute__((section (".cygwin_dll_common"), shared)) = {
 362   def_guard_pages:2,
 363   mmap_storage_high:0x700000000000LL,
 364   {
 365     is_server:false,
 366     needs_count_in_si_lpres2:false,
 367     needs_query_information:false,
 368     has_gaa_largeaddress_bug:false,
 369     has_broken_alloc_console:true,
 370     has_console_logon_sid:true,
 371     has_precise_system_time:true,
 372     has_microsoft_accounts:true,
 373     has_processor_groups:true,
 374     has_broken_prefetchvm:false,
 375     has_new_pebteb_region:true,
 376     has_broken_whoami:false,
 377     has_unprivileged_createsymlink:true,
 378     has_unbiased_interrupt_time:true,
 379     has_precise_interrupt_time:true,
 380     has_posix_unlink_semantics:true,
 381     has_case_sensitive_dirs:true,
 382     has_posix_rename_semantics:true,
 383     no_msv1_0_s4u_logon_in_wow64:false,
 384     has_con_24bit_colors:true,
 385     has_con_broken_csi3j:false,
 386     has_con_broken_il_dl:true,
 387     has_con_esc_rep:true,
 388     has_extended_mem_api:true,
 389     has_tcp_fastopen:true,
 390     has_linux_tcp_keepalive_sockopts:true,
 391     has_tcp_maxrtms:true,
 392   },
 393 };
 394
 395 wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
 396
 397 void
 398 wincapc::init ()
 399 {
 400   if (caps)
 401     return;             // already initialized
 402
 403   GetSystemInfo (&system_info);
 404   version.dwOSVersionInfoSize = sizeof (RTL_OSVERSIONINFOEXW);
 405   RtlGetVersion (&version);
 406   /* Overwrite unreliable kernel version with correct values returned by
 407      RtlGetNtVersionNumbers.  See git log of this change for a description. */
 408   RtlGetNtVersionNumbers (&version.dwMajorVersion,
 409                           &version.dwMinorVersion,
 410                           &version.dwBuildNumber);
 411   version.dwBuildNumber &= 0xffff;
 412
 413   switch (version.dwMajorVersion)
 414     {
 415       case 6:
 416         switch (version.dwMinorVersion)
 417           {
 418             case 0:
 419               caps = &wincap_vista;
 420               break;
 421             case 1:
 422               caps = &wincap_7;
 423               break;
 424             case 2:
 425               caps = &wincap_8;
 426               break;
 427             case 3:
 428             default:
 429               caps = &wincap_8_1;
 430               break;
 431           }
 432         break;
 433       case 10:
 434       default:
 435         if (likely (version.dwBuildNumber >= 18362))
 436           caps = &wincap_10_1903;
 437         else if (version.dwBuildNumber >= 17763)
 438           caps = &wincap_10_1809;
 439         else if (version.dwBuildNumber >= 17134)
 440           caps = &wincap_10_1803;
 441         else if (version.dwBuildNumber >= 16299)
 442           caps = &wincap_10_1709;
 443         else if (version.dwBuildNumber >= 15063)
 444           caps = &wincap_10_1703;
 445         else if (version.dwBuildNumber >= 14393)
 446           caps = &wincap_10_1607;
 447         else
 448           caps = & wincap_10_1507;
 449     }
 450
 451   ((wincaps *)caps)->is_server = (version.wProductType != VER_NT_WORKSTATION);
 452 #ifdef __x86_64__
 453   wow64 = 0;
 454   /* 64 bit systems have one more guard page than their 32 bit counterpart. */
 455   ++((wincaps *)caps)->def_guard_pages;
 456 #else
 457   if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
 458                                              ProcessWow64Information,
 459                                              &wow64, sizeof wow64, NULL))
 460       && !wow64)
 461 #endif
 462     {
 463       ((wincaps *)caps)->needs_count_in_si_lpres2 = false;
 464       ((wincaps *)caps)->has_gaa_largeaddress_bug = false;
 465       ((wincaps *)caps)->has_broken_prefetchvm = false;
 466       ((wincaps *)caps)->no_msv1_0_s4u_logon_in_wow64 = false;
 467     }
 468
 469   __small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
 470                    version.dwMinorVersion);
 471 }