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Christopher Faylor 56a1971526 Throughout use "have_execed" macro rather than "hExeced" global handle.
Throughout rename _PROC_* to _CH_*.
* child_info.h: Include "pinfo.h".
(child_info_types): Rename _PROC_* -> _CH_* to avoid confusion with similarly
named constants.
(_PROC_*): Delete unneeded aliases.
(PROC_*): Ditto.
(CURR_CHILD_INFO_MAGIC): Ditto.
(cchildren): Define using "pinfo_minimal".
(child_info::set_saw_ctrl_c): Move to
(child_info_spawn::set_saw_ctrl_c): Here.
(child_info_spawn::lock): New field.
(child_info_spawn::hExeced): Ditto.
(child_info_spawn::ev): Ditto.
(child_info_spawn::~child_info_spawn): Move to sigproc.cc.
(child_info_spawn::child_info_spawn): Ditto.
(child_info_spawn::cleanup): Declare new function.
(child_info_spawn::set_saw_ctrl_c): Move to this class.  Set flag only when
execed and return true when we have set the flag.
(child_info_spawn::child_info_spawn::signal_myself_exited): New function.
(child_info_spawn::wait_for_myself): Ditto.
(child_info_spawn::has_execed_cygwin): Ditto.
(child_info_spawn::has_execed): Ditto.  Replaces "hExeced" test.
(child_info_spawn::operator HANDLE&): New operator.
(child_info_spawn::worker): Define old "spawn_guts" as class member.
(ch_spawn): Declare.
(have_execed): Define.
(have_execed_cygwin): Ditto.
* cygheap.h: Update comment.
* dcrt0.cc (get_cygwin_startup_info): Use _CH_* enums.
(child_info_spawn::handle_spawn): Ditto.
(dll_crt0_0): Ditto.
(multiple_cygwin_problem): Ditto.
* exceptions.cc (chExeced): Delete obsolete declaration.
(ctrl_c_handler): Reference set_saw_ctrl_c via new ch_spawn global.
* globals.cc (hExeced): Delete.
* pinfo.cc (pinfo::thisproc): Refer to cygheap as ::cygheap for consistency in
handle naming when -DDEBUGGING.
(pinfo::init): Accommodate case where myself.h is known but h0 is passed in.
(pinfo::pinfo): New constructor for setting up a pinfo passed in by previous
exec'or.
(pinfo::proc_waiter): Don't handle subprocess if we're in the process of
exiting due to an exec of a cygwin process.  Don't close rd_proc_pipe here.
Close it when we actually are finished with the process.  Use new
ch_spawn.signal_myself_exited function to let exec stub know that subprocess
has exited.
(pinfo::wait): Clarify debugging output.
(pinfo::release): Use "close_h" to close all handles to avoid races.
(winpids::add): Assume that elements of the array do not need to be zeroed and
are properly initialized or suffer problems on pinfo::release.  Don't close
hProcess since release does that now.
* pinfo.h: Update comment.
(pinfo_minimal): Move some elements from pinfo here so that child_info_spawn
can use them.
(pinfo): Inherit from pinfo_minimal.
(pinfo::pinfo): Modify to accommodate new pinfo_minimal.
(pinfo::allow_remove): New function.
* sigproc.cc (proc_subproc): Use boolean values for true/false.  Implement
PROC_EXEC_CLEANUP.
(proc_terminate): Set ppid = 1 since the procs list will only be iterated when
the process has not execed.  Don't do any cleanup here since it is now handled
in pinfo::release.
(sigproc_init): Initialize sync_proc_subproc earlier.
(child_info::child_info): Assume that all important fields are properly
initialized and avoid memset().
(child_info_spawn::child_info_spawn): Specifically test for execing and then
set up appropriate fields in the struct.
(child_info_spawn::cleanup): Define new function.
(child_info_spawn::record_children): Specifically test for being execed here.
Fill in pinfo_minimal part of children array.
(child_info_spawn::reattach_children): Use constructor to duplicate information
for previous exec'or.  Add more debugging output.
(remove_proc): Force deletion of thread when exiting due to exec.  Rely on
pinfo::cleanup in release.
* sigproc.h (PROC_EXEC_CLEANUP): New enum.
(PROC_DETACHED_CHILD): Delete.
* spawn.cc (chExeced): Delete.
(child_info_spawn::worker): Rename from spawn_guts.  Use elements of
child_info_spawn throughout rather than ch.whatever.  Use ::cygheap to refer to
global rather than element of child_info.  Use wait_for_myself() rather than
waitpid().  Call child_info_spawn::cleanup on function return.
(spawnve): Reflect movement of spawn_guts functionality into
child_info_spawn::worker.
* syscalls.cc (popen): Ditto.
* winsup.h (spawn_guts): Delete declaration.
2011-11-14 01:29:49 +00:00

163 lines
5.2 KiB
C++

/* globals.cc - Define global variables here.
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#define _GLOBALS_H 1
#include "winsup.h"
#include "cygtls.h"
#include "perprocess.h"
#include "cygprops.h"
#include "thread.h"
#include <malloc.h>
#include <cygwin/version.h>
HANDLE NO_COPY hMainThread;
HANDLE NO_COPY hProcToken;
HANDLE NO_COPY hProcImpToken;
HMODULE NO_COPY cygwin_hmodule;
int NO_COPY sigExeced;
WCHAR NO_COPY windows_system_directory[MAX_PATH];
UINT NO_COPY windows_system_directory_length;
/* program exit the program */
enum exit_states
{
ES_NOT_EXITING = 0,
ES_EXIT_STARTING,
ES_PROCESS_LOCKED,
ES_EVENTS_TERMINATE,
ES_SIGNAL,
ES_CLOSEALL,
ES_THREADTERM,
ES_HUP_PGRP,
ES_HUP_SID,
ES_EXEC_EXIT,
ES_TTY_TERMINATE,
ES_FINAL
};
exit_states NO_COPY exit_state;
/* Set in init.cc. Used to check if Cygwin DLL is dynamically loaded. */
int NO_COPY dynamically_loaded;
/* Some CYGWIN environment variable variables. */
bool allow_glob = true;
bool NO_COPY in_forkee;
int __argc_safe;
int __argc;
char **__argv;
#ifdef NEWVFORK
vfork_save NO_COPY *main_vfork;
#endif
_cygtls NO_COPY *_main_tls /* !globals.h */;
bool NO_COPY cygwin_finished_initializing;
bool NO_COPY _cygwin_testing;
char NO_COPY almost_null[1];
/* Heavily-used const UNICODE_STRINGs are defined here once. The idea is a
speed improvement by not having to initialize a UNICODE_STRING every time
we make a string comparison. The strings are not defined as const,
because the respective NT functions are not taking const arguments
and doing so here results in lots of extra casts for no good reason.
Rather, the strings are placed in the R/O section .rdata, so we get
a SEGV if some code erroneously tries to overwrite these strings. */
#define _ROU(_s) \
{ Length: sizeof (_s) - sizeof (WCHAR), \
MaximumLength: sizeof (_s), \
Buffer: (PWSTR) (_s) }
UNICODE_STRING _RDATA ro_u_empty = _ROU (L"");
UNICODE_STRING _RDATA ro_u_lnk = _ROU (L".lnk");
UNICODE_STRING _RDATA ro_u_exe = _ROU (L".exe");
UNICODE_STRING _RDATA ro_u_dll = _ROU (L".dll");
UNICODE_STRING _RDATA ro_u_com = _ROU (L".com");
UNICODE_STRING _RDATA ro_u_scr = _ROU (L".scr");
UNICODE_STRING _RDATA ro_u_sys = _ROU (L".sys");
UNICODE_STRING _RDATA ro_u_proc = _ROU (L"proc");
UNICODE_STRING _RDATA ro_u_pmem = _ROU (L"\\Device\\PhysicalMemory");
UNICODE_STRING _RDATA ro_u_natp = _ROU (L"\\??\\");
UNICODE_STRING _RDATA ro_u_uncp = _ROU (L"\\??\\UNC\\");
UNICODE_STRING _RDATA ro_u_mtx = _ROU (L"mtx");
UNICODE_STRING _RDATA ro_u_csc = _ROU (L"CSC-CACHE");
UNICODE_STRING _RDATA ro_u_fat = _ROU (L"FAT");
UNICODE_STRING _RDATA ro_u_mvfs = _ROU (L"MVFS");
UNICODE_STRING _RDATA ro_u_nfs = _ROU (L"NFS");
UNICODE_STRING _RDATA ro_u_ntfs = _ROU (L"NTFS");
UNICODE_STRING _RDATA ro_u_sunwnfs = _ROU (L"SUNWNFS");
UNICODE_STRING _RDATA ro_u_udf = _ROU (L"UDF");
UNICODE_STRING _RDATA ro_u_unixfs = _ROU (L"UNIXFS");
UNICODE_STRING _RDATA ro_u_nwfs = _ROU (L"NWFS");
UNICODE_STRING _RDATA ro_u_ncfsd = _ROU (L"NcFsd");
UNICODE_STRING _RDATA ro_u_volume = _ROU (L"\\??\\Volume{");
UNICODE_STRING _RDATA ro_u_pipedir = _ROU (L"\\\\?\\PIPE\\");
UNICODE_STRING _RDATA ro_u_globalroot = _ROU (L"\\\\.\\GLOBALROOT");
#undef _ROU
/* Cygwin properties are meant to be readonly data placed in the DLL, but
which can be changed by external tools to make adjustments to the
behaviour of a DLL based on the binary of the DLL itself. This is
different from $CYGWIN since it only affects that very DLL, not all
DLLs which have access to the $CYGWIN environment variable. */
cygwin_props_t _RDATA cygwin_props =
{
CYGWIN_PROPS_MAGIC,
sizeof (cygwin_props_t),
0
};
extern "C"
{
/* This is an exported copy of environ which can be used by DLLs
which use cygwin.dll. */
char **__cygwin_environ;
char ***main_environ = &__cygwin_environ;
/* __progname used in getopt error message */
char *__progname;
char *program_invocation_name;
char *program_invocation_short_name;
static MTinterface _mtinterf;
struct per_process __cygwin_user_data =
{/* initial_sp */ 0, /* magic_biscuit */ 0,
/* dll_major */ CYGWIN_VERSION_DLL_MAJOR,
/* dll_major */ CYGWIN_VERSION_DLL_MINOR,
/* impure_ptr_ptr */ NULL, /* envptr */ NULL,
/* malloc */ malloc, /* free */ free,
/* realloc */ realloc,
/* fmode_ptr */ NULL, /* main */ NULL, /* ctors */ NULL,
/* dtors */ NULL, /* data_start */ NULL, /* data_end */ NULL,
/* bss_start */ NULL, /* bss_end */ NULL,
/* calloc */ calloc,
/* premain */ {NULL, NULL, NULL, NULL},
/* run_ctors_p */ 0,
/* unused */ {},
/* cxx_malloc */ &default_cygwin_cxx_malloc,
/* hmodule */ NULL,
/* api_major */ 0,
/* api_minor */ 0,
/* unused2 */ {},
/* pseudo_reloc_start */ NULL,
/* pseudo_reloc_end */ NULL,
/* image_base */ NULL,
/* threadinterface */ &_mtinterf,
/* impure_ptr */ _GLOBAL_REENT,
};
bool ignore_case_with_glob;
int _check_for_executable = true;
};
int NO_COPY __api_fatal_exit_val = 1;