mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-02-22 00:38:06 +08:00
46f7bcc1e5
This was already used in the FAST_CWD check, and could be used in a couple other places. I found the "emulated"/process value returned from the function largely useless, so I did not cache it. It is useless because, as the docs say, it is set to IMAGE_FILE_MACHINE_UNKNOWN (0) if the process is not running under WOW64, but Microsoft also doesn't consider x64-on-ARM64 to be WOW64, so it is set to 0 regardless if the process is ARM64 or x64. You can tell the difference via GetProcessInformation(ProcessMachineTypeInfo), but for the current process even that's overkill: what we really want to know is the IMAGE_FILE_MACHINE_* constant for the Cygwin dll itself, which is conveniently located in memory already, so cache that in wincap also for easy comparisons. Signed-off-by: Jeremy Drake <cygwin@jdrake.com>
305 lines
8.6 KiB
C++
305 lines
8.6 KiB
C++
/* wincap.cc -- figure out on which OS we're running. Set the
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capability class to the appropriate values.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include "miscfuncs.h"
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#include "security.h"
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#include "ntdll.h"
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#include "memory_layout.h"
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static const wincaps wincap_8_1 = {
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{
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has_new_pebteb_region:false,
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has_unprivileged_createsymlink:false,
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has_precise_interrupt_time:false,
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has_posix_unlink_semantics:false,
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has_posix_unlink_semantics_with_ignore_readonly:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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has_con_24bit_colors:false,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:false,
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has_tcp_fastopen:false,
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has_linux_tcp_keepalive_sockopts:false,
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has_tcp_maxrtms:false,
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has_con_broken_tabs:false,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1507 = {
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{
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has_new_pebteb_region:false,
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has_unprivileged_createsymlink:false,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:false,
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has_posix_unlink_semantics_with_ignore_readonly:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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has_con_24bit_colors:false,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:false,
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has_tcp_fastopen:false,
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has_linux_tcp_keepalive_sockopts:false,
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has_tcp_maxrtms:false,
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has_con_broken_tabs:false,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1607 = {
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{
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has_new_pebteb_region:false,
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has_unprivileged_createsymlink:false,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:false,
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has_posix_unlink_semantics_with_ignore_readonly:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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has_con_24bit_colors:false,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:false,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:false,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:false,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1703 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:false,
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has_posix_unlink_semantics_with_ignore_readonly:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:false,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:false,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:true,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1709 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_posix_unlink_semantics_with_ignore_readonly:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:false,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:true,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:true,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1803 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_posix_unlink_semantics_with_ignore_readonly:false,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:false,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:true,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:true,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:true,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1809 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_posix_unlink_semantics_with_ignore_readonly:true,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:true,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:true,
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has_con_broken_il_dl:false,
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has_con_esc_rep:false,
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has_extended_mem_api:true,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:true,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:true,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_1903 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_posix_unlink_semantics_with_ignore_readonly:true,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:true,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:true,
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has_con_esc_rep:true,
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has_extended_mem_api:true,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:true,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:true,
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has_user_shstk:false,
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},
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};
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static const wincaps wincap_10_2004 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_posix_unlink_semantics_with_ignore_readonly:true,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:true,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:true,
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has_extended_mem_api:true,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:true,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:true,
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has_user_shstk:true,
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},
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};
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static const wincaps wincap_11 = {
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{
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has_new_pebteb_region:true,
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has_unprivileged_createsymlink:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_posix_unlink_semantics_with_ignore_readonly:true,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:true,
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has_con_24bit_colors:true,
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has_con_broken_csi3j:false,
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has_con_broken_il_dl:false,
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has_con_esc_rep:true,
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has_extended_mem_api:true,
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has_tcp_fastopen:true,
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has_linux_tcp_keepalive_sockopts:true,
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has_tcp_maxrtms:true,
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has_con_broken_tabs:false,
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has_user_shstk:true,
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},
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};
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wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
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extern IMAGE_DOS_HEADER
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__image_base__;
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void
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wincapc::init ()
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{
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PIMAGE_NT_HEADERS ntheader;
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USHORT emul_mach;
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if (caps)
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return; // already initialized
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GetSystemInfo (&system_info);
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version.dwOSVersionInfoSize = sizeof (RTL_OSVERSIONINFOEXW);
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RtlGetVersion (&version);
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/* Overwrite unreliable kernel version with correct values returned by
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RtlGetNtVersionNumbers. See git log of this change for a description. */
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RtlGetNtVersionNumbers (&version.dwMajorVersion,
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&version.dwMinorVersion,
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&version.dwBuildNumber);
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version.dwBuildNumber &= 0xffff;
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switch (version.dwMajorVersion)
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{
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case 6:
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caps = &wincap_8_1;
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break;
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case 10:
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default:
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if (likely (version.dwBuildNumber >= 22000))
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caps = &wincap_11;
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else if (version.dwBuildNumber >= 19041)
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caps = &wincap_10_2004;
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else if (version.dwBuildNumber >= 18362)
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caps = &wincap_10_1903;
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else if (version.dwBuildNumber >= 17763)
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caps = &wincap_10_1809;
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else if (version.dwBuildNumber >= 17134)
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caps = &wincap_10_1803;
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else if (version.dwBuildNumber >= 16299)
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caps = &wincap_10_1709;
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else if (version.dwBuildNumber >= 15063)
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caps = &wincap_10_1703;
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else if (version.dwBuildNumber >= 14393)
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caps = &wincap_10_1607;
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else
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caps = & wincap_10_1507;
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}
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_is_server = (version.wProductType != VER_NT_WORKSTATION);
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__small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
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version.dwMinorVersion);
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if (!IsWow64Process2 (GetCurrentProcess (), &emul_mach, &host_mach))
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{
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/* If IsWow64Process2 succeeded, it filled in host_mach. Assume the only
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way it fails for the current process is that we're running on an OS
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version where it's not implemented yet. As such, the only realistic
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option for host_mach is AMD64 */
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host_mach = IMAGE_FILE_MACHINE_AMD64;
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}
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ntheader = (PIMAGE_NT_HEADERS)((LPBYTE) &__image_base__
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+ __image_base__.e_lfanew);
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cygwin_mach = ntheader->FileHeader.Machine;
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}
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