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* dtable.cc (dtable::init_std_file_from_handle): Add workaround for
Windows 7 64 bit issue. Add lengthy comment to explain what happens. * wincap.h (wincaps::has_console_handle_problem): New element. * wincap.cc: Implement above element throughout. (wincap_7): New wincaps structure for NT 6.1 kernels. (wincapc::init): Set has_console_handle_problem to false for 32 bit systems. Fix broken older ChangeLog entry.
This commit is contained in:
Corinna Vinschen
parent
a22af4a956
commit
9b98d6a8fb
@ -1,3 +1,13 @@
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2009-05-09 Corinna Vinschen <corinna@vinschen.de>
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* dtable.cc (dtable::init_std_file_from_handle): Add workaround for
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Windows 7 64 bit issue. Add lengthy comment to explain what happens.
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* wincap.h (wincaps::has_console_handle_problem): New element.
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* wincap.cc: Implement above element throughout.
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(wincap_7): New wincaps structure for NT 6.1 kernels.
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(wincapc::init): Set has_console_handle_problem to false for 32 bit
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systems.
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2009-05-09 Corinna Vinschen <corinna@vinschen.de>
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* sec_auth.cc (str2uni_cat): Move from here...
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@ -880,7 +890,7 @@
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* path.cc (symlink_info::check): Add workaround for UDF bug in
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terms of casesensitivity on certain OSes.
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* wincap.h (wincaps::has_broken_udf): New element.
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(wincaps::has_broken_udf): New element
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* wincap.cc: Implement above element throughout.
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2009-01-27 Christopher Faylor <me+cygwin@cgf.cx>
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@ -358,7 +358,32 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle)
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else
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access |= GENERIC_WRITE; /* Should be rdwr for stderr but not sure that's
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possible for some versions of handles */
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fh->init (handle, access, bin);
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/* FIXME: Workaround Windows 7 64 bit issue. If the parent process of
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the process tree closes the original handles to the console window,
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strange problems occur when starting child processes later on if
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stdio redirection is used. How to reproduce:
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shell script foo:
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exec 2>foo.log
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FOO=$( uname -n | cat )
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echo $FOO
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start from cmd with `bash foo'. The result is that the cat process
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will be started but dies before Cygwin strace output can be generated
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and $FOO stays empty. The strace output shows that bash tries
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multiple times to start cat, but none of the invocations of cat will
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ever show up in the strace output.
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Remove the `exec 2>' or remove the cat call and the script will work.
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Start bash interactively, then start the script manually, and the
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script will work.
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This needs further investigation but the workaround not to close
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the handles will have a marginal hit of three extra handles per
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process at most. */
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fh->init (dev == FH_CONSOLE && wincap.has_console_handle_problem ()
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? INVALID_HANDLE_VALUE : handle, access, bin);
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set_std_handle (fd);
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paranoid_printf ("fd %d, handle %p", fd, handle);
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}
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@ -54,6 +54,7 @@ wincaps wincap_unknown __attribute__((section (".cygwin_dll_common"), shared)) =
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has_recvmsg:false,
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has_sendmsg:false,
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has_broken_udf:false,
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has_console_handle_problem:false,
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};
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wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -90,6 +91,7 @@ wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:false,
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has_sendmsg:false,
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has_broken_udf:false,
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has_console_handle_problem:false,
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};
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wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -126,6 +128,7 @@ wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
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has_recvmsg:false,
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has_sendmsg:false,
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has_broken_udf:false,
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has_console_handle_problem:false,
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};
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wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -162,6 +165,7 @@ wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:false,
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has_sendmsg:false,
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has_broken_udf:true,
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has_console_handle_problem:false,
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};
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wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -198,6 +202,7 @@ wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
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has_recvmsg:false,
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has_sendmsg:false,
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has_broken_udf:true,
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has_console_handle_problem:false,
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};
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wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -234,6 +239,7 @@ wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:true,
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has_sendmsg:false,
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has_broken_udf:true,
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has_console_handle_problem:false,
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};
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wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -270,6 +276,7 @@ wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:true,
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has_sendmsg:false,
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has_broken_udf:true,
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has_console_handle_problem:false,
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};
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wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -306,6 +313,7 @@ wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:true,
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has_sendmsg:false,
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has_broken_udf:true,
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has_console_handle_problem:false,
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};
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wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -342,6 +350,7 @@ wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:true,
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has_sendmsg:false,
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has_broken_udf:true,
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has_console_handle_problem:false,
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};
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wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
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@ -378,6 +387,44 @@ wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
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has_recvmsg:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_console_handle_problem:false,
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};
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wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
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chunksize:0,
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heapslop:0x4,
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max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
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is_server:false,
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has_dacl_protect:true,
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has_ip_helper_lib:true,
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has_broken_if_oper_status:false,
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has_physical_mem_access:false,
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has_process_io_counters:true,
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has_terminal_services:true,
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has_create_global_privilege:true,
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has_ioctl_storage_get_media_types_ex:true,
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has_extended_priority_class:true,
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has_guid_volumes:true,
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has_disk_ex_ioctls:true,
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has_disabled_user_tos_setting:true,
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has_fileid_dirinfo:true,
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has_exclusiveaddruse:true,
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has_enhanced_socket_security:true,
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has_buggy_restart_scan:false,
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has_mandatory_integrity_control:true,
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needs_logon_sid_in_sid_list:false,
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needs_count_in_si_lpres2:true,
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has_recycle_dot_bin:true,
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has_gaa_prefixes:true,
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has_gaa_on_link_prefix:true,
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supports_all_posix_ai_flags:true,
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has_restricted_stack_args:false,
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has_transactions:true,
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ts_has_dep_problem:false,
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has_recvmsg:true,
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has_sendmsg:true,
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has_broken_udf:false,
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has_console_handle_problem:true,
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};
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wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
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@ -441,8 +488,16 @@ wincapc::init ()
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}
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break;
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case 6:
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switch (version.dwMinorVersion)
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{
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case 0:
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caps = &wincap_vista;
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break;
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default:
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caps = &wincap_7;
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break;
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}
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break;
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default:
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caps = &wincap_unknown;
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break;
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@ -474,6 +529,7 @@ wincapc::init ()
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{
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((wincaps *)caps)->needs_count_in_si_lpres2 = false;
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((wincaps *)caps)->has_restricted_stack_args = false;
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((wincaps *)caps)->has_console_handle_problem = false;
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}
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__small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
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@ -46,6 +46,7 @@ struct wincaps
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unsigned has_recvmsg : 1;
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unsigned has_sendmsg : 1;
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unsigned has_broken_udf : 1;
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unsigned has_console_handle_problem : 1;
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};
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class wincapc
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@ -98,6 +99,7 @@ public:
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bool IMPLEMENT (has_recvmsg)
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bool IMPLEMENT (has_sendmsg)
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bool IMPLEMENT (has_broken_udf)
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bool IMPLEMENT (has_console_handle_problem)
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#undef IMPLEMENT
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};
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