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newlib-cygwin/winsup/cygwin/winsup.h
Christopher Faylor 5d97040501 *** cygwin DLL Changes: 
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset.
(child_info::dwProcessId): Delete.
(child_info::straced): New variable.
(child_info::handle_fork): New member function.
* dcrt0.cc (in_forkee): New global variable.
(__cygwin_user_data::forkee): Mark as obsolete.
(do_global_ctors): Use in_forkee rather than user_data->forkee.
(get_cygwin_startup_info): Ditto.  Deal with new straced field to allow strace
to deal with children of attached processes.
(initial_env): Accommodate changes to strace::hello.
(child_info_fork::handle_fork): Rename from plain old 'handle_fork'.  Move
alloc_stack() call elsewhere.
(dll_crt0_0): Fill out more of user_data.  Reference handle_fork via fork_info.
Add some debugging output.
(_dll_crt0): Don't wait for sync thread if sync_startup is invalid.  Zero
sync_startup here.  Call alloc_stack() here, if appropriate.
(dll_crt0_1): Use in_forkee rather than user_data->forkee.
(dll_crt0): Ditto.
* malloc_wrapper.cc (malloc_init): Ditto.
* dll_init.cc (in_forkee): Remove local static version of this variable.
(dll_list::load_after_fork): Don't set in_forkee here.
* external.cc (cygwin_internal): Use strace method rather than accessing field
directly.
* fhandler.cc (fhandler_base::read): Ditto.
* fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Ditto.
* fork.cc (frok::parent): Invoke strace write_childpid to communicate with
potential strace.
(child_copy): Add more detail to debugging output.
* init.cc (calibration_id): New static variable.
(prime_threads): Set sync_startup to invalid handle if we already know about
thread_func_ix.  Use static calibration_id to hold calibration thread id.
* munge_threadfunc (munge_threadfunc): Don't try to debug if we don't find
threadfunc_ix.
(dll_entry): Avoid calling munge_threadfunc and _cygtls::remove on non-cygwin
threads invoked during process startup.
* pinfo.cc (set_myself): Always call strace.hello here regardless of DEBUGGING.
* sigproc.cc (child_info::child_info): Remove spurious handling of dwProcessId.
Set straced as appropriate.
* spawn.cc (spawn_guts): Rename ciresrv to ch.  Invoke strace write_childpid to
communicate with potential strace.
* strace.cc: Include child_info.h.
(strace::hello): Remove inited test.  Use active() method to test if strace has
been activated.  Handle case where we are started before
(mypid): New function.
(strace::vsprntf): Try to deal more intelligently with case where progname may
not be filled out.  Put pid in parentheses if it is a windows pid rather than a
cygwin pid.  myself has been filled out.
(strace::write_childpid): New function for notifying strace about the creation
of children.
(strace::vprntf): Use strace method rather than accessing field directly.
(strace_printf): Ditto.
(strace::wm): Ditto.
* winsup.h (in_forkee): Declare.
* include/sys/strace.h (strace::write_childpid): Declare new function.
(strace::attached): Define new function.
(strace::active): Ditto.
(strace::active_val): Ditto.
(_STRACE_ON): Delete.
(_STRACE_OFF): Ditto.
(define_strace0): Use strace method rather than accessing field directly.
(strace_printf_wrap): Ditto.
(strace_printf_wrap1): Ditto.

*** cygwin utils changes:
* strace.cc (nprocesses): Make static global.
(quiet): New variable.
(strace_active): Ditto.
(add_child): Increment nprocesses here.  Don't add a child if it is already
added (windows bug?).  Report on child if not quiet.
(get_child): Just return NULL if child not found.
(remove_child): Report on child if not quiet.
(attach_process): Don't complain if given a windows process.  Use windows pid
in error.
(handle_output_debug_string): Issue error if trying to manipulate a process
that we don't know about.  Handle _STRACE_CHILD_PID - attach to reported child
when we get this.
(proc_child): Move nprocesses to file scope.  Report on exceptions.
(longopts): Implement "--quiet".
(opts): Implement "-q".
(main): Manipulate quiet flag.
* utils.sgml (strace): Add words describing '-q'.
2005-12-29 20:46:34 +00:00

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/* winsup.h: main Cygwin header file.
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
2005 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. */
#ifdef DEBUGIT
#define spf(a, b, c) small_printf (a, b, c)
#else
#define spf(a, b, c) do {} while (0)
#endif
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#define __INSIDE_CYGWIN__
#define strlen __builtin_strlen
#define strcmp __builtin_strcmp
#define strcpy __builtin_strcpy
#define memcpy __builtin_memcpy
#define memcmp __builtin_memcmp
#ifdef HAVE_BUILTIN_MEMSET
# define memset __builtin_memset
#endif
#define NO_COPY __attribute__((nocommon)) __attribute__((section(".data_cygwin_nocopy")))
#define NO_COPY_INIT __attribute__((section(".data_cygwin_nocopy")))
#define EXPORT_ALIAS(sym,symalias) extern "C" __typeof (sym) symalias __attribute__ ((alias(#sym)));
#if !defined(__STDC_VERSION__) || __STDC_VERSION__ >= 199900L
#define NEW_MACRO_VARARGS
#endif
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
#include <sys/types.h>
#include <sys/strace.h>
/* Declarations for functions used in C and C++ code. */
#ifdef __cplusplus
extern "C" {
#endif
extern __uid32_t getuid32 (void);
extern __uid32_t geteuid32 (void);
extern int seteuid32 (__uid32_t);
extern __gid32_t getegid32 (void);
extern struct passwd *getpwuid32 (__uid32_t);
extern struct passwd *getpwnam (const char *);
extern struct __sFILE64 *fopen64 (const char *, const char *);
extern struct hostent *cygwin_gethostbyname (const char *name);
extern unsigned long cygwin_inet_addr (const char *cp);
#ifdef __cplusplus
}
#endif
/* Note that MAX_PATH is defined in the windows headers */
/* There is also PATH_MAX and MAXPATHLEN.
PATH_MAX is from Posix and does *not* include the trailing NUL.
MAXPATHLEN is from Unix.
Thou shalt use CYG_MAX_PATH throughout. It avoids the NUL vs no-NUL
issue and is neither of the Unixy ones [so we can punt on which
one is the right one to use].
Windows ANSI calls are limited to MAX_PATH in length. Cygwin calls that
thunk through to Windows Wide calls are limited to 32K. We define
CYG_MAX_PATH as a convenient, not to short, not too long 'happy medium'.
*/
#define CYG_MAX_PATH (MAX_PATH)
#ifdef __cplusplus
extern const char case_folded_lower[];
#define cyg_tolower(c) (case_folded_lower[(unsigned char)(c)])
extern const char case_folded_upper[];
#define cyg_toupper(c) (case_folded_upper[(unsigned char)(c)])
#ifndef MALLOC_DEBUG
#define cfree newlib_cfree_dont_use
#endif
#define WIN32_LEAN_AND_MEAN 1
#define _WINGDI_H
#define _WINUSER_H
#define _WINNLS_H
#define _WINVER_H
#define _WINNETWK_H
#define _WINSVC_H
#include <windows.h>
#include <wincrypt.h>
#include <lmcons.h>
#undef _WINGDI_H
#undef _WINUSER_H
#undef _WINNLS_H
#undef _WINVER_H
#undef _WINNETWK_H
#undef _WINSVC_H
#include "wincap.h"
/* The one function we use from winuser.h most of the time */
extern "C" DWORD WINAPI GetLastError (void);
enum codepage_type {ansi_cp, oem_cp};
extern codepage_type current_codepage;
UINT get_cp ();
int __stdcall sys_wcstombs(char *, const WCHAR *, int)
__attribute__ ((regparm(3)));
int __stdcall sys_mbstowcs(WCHAR *, const char *, int)
__attribute__ ((regparm(3)));
/* Used to check if Cygwin DLL is dynamically loaded. */
extern int dynamically_loaded;
extern int cygserver_running;
#define _MT_SAFE // DELTEME someday
#define TITLESIZE 1024
#include "debug.h"
/* Events/mutexes */
extern HANDLE tty_mutex;
/**************************** Convenience ******************************/
/* Used to define status flag accessor methods */
#define IMPLEMENT_STATUS_FLAG(type,flag) \
void flag (type val) { status.flag = (val); } \
type flag () const { return (type) status.flag; }
/* Used when treating / and \ as equivalent. */
#define isdirsep(ch) \
({ \
char __c = (ch); \
((__c) == '/' || (__c) == '\\'); \
})
/* Convert a signal to a signal mask */
#define SIGTOMASK(sig) (1 << ((sig) - signal_shift_subtract))
extern unsigned int signal_shift_subtract;
#ifdef NEW_MACRO_VARARGS
# define api_fatal(...) __api_fatal (__VA_ARGS__)
#else
# define api_fatal(fmt, args...) __api_fatal ("%P: *** " fmt,## args)
#endif
#undef issep
#define issep(ch) (strchr (" \t\n\r", (ch)) != NULL)
#define isabspath(p) \
(isdirsep (*(p)) || (isalpha (*(p)) && (p)[1] == ':' && (!(p)[2] || isdirsep ((p)[2]))))
/******************** Initialization/Termination **********************/
class per_process;
/* cygwin .dll initialization */
void dll_crt0 (per_process *) __asm__ ("_dll_crt0__FP11per_process");
extern "C" void __stdcall _dll_crt0 ();
/* dynamically loaded dll initialization */
extern "C" int dll_dllcrt0 (HMODULE, per_process *);
/* dynamically loaded dll initialization for non-cygwin apps */
extern "C" int dll_noncygwin_dllcrt0 (HMODULE, per_process *);
/* exit the program */
enum exit_states
{
ES_NOT_EXITING = 0,
ES_SET_MUTO,
ES_GLOBAL_DTORS,
ES_EVENTS_TERMINATE,
ES_THREADTERM,
ES_SIGNAL,
ES_CLOSEALL,
ES_HUP_PGRP,
ES_HUP_SID,
ES_EXEC_EXIT,
ES_TITLE,
ES_TTY_TERMINATE,
ES_FINAL
};
extern exit_states exit_state;
void __stdcall do_exit (int) __attribute__ ((regparm (1), noreturn));
/* UID/GID */
void uinfo_init ();
#define ILLEGAL_UID16 ((__uid16_t)-1)
#define ILLEGAL_UID ((__uid32_t)-1)
#define ILLEGAL_GID16 ((__gid16_t)-1)
#define ILLEGAL_GID ((__gid32_t)-1)
#define ILLEGAL_SEEK ((_off64_t)-1)
#define uid16touid32(u16) ((u16)==ILLEGAL_UID16?ILLEGAL_UID:(__uid32_t)(u16))
#define gid16togid32(g16) ((g16)==ILLEGAL_GID16?ILLEGAL_GID:(__gid32_t)(g16))
/* Convert LARGE_INTEGER into long long */
#define get_ll(pl) (((long long) (pl).HighPart << 32) | (pl).LowPart)
/* various events */
void events_init ();
void events_terminate ();
void __stdcall close_all_files (bool = false);
/* debug_on_trap support. see exceptions.cc:try_to_debug() */
extern "C" void error_start_init (const char*);
extern "C" int try_to_debug (bool waitloop = 1);
extern void ld_preload ();
void set_file_api_mode (codepage_type);
extern bool cygwin_finished_initializing;
/**************************** Miscellaneous ******************************/
void __stdcall set_std_handle (int);
int __stdcall stat_dev (DWORD, int, unsigned long, struct __stat64 *);
__ino64_t __stdcall hash_path_name (__ino64_t hash, const char *name) __attribute__ ((regparm(2)));
void __stdcall nofinalslash (const char *src, char *dst) __attribute__ ((regparm(2)));
extern "C" char *__stdcall rootdir (const char *full_path, char *root_path) __attribute__ ((regparm(2)));
/* String manipulation */
extern "C" char *__stdcall strccpy (char *s1, const char **s2, char c);
extern "C" int __stdcall strcasematch (const char *s1, const char *s2) __attribute__ ((regparm(2)));
extern "C" int __stdcall strncasematch (const char *s1, const char *s2, size_t n) __attribute__ ((regparm(3)));
extern "C" char *__stdcall strcasestr (const char *searchee, const char *lookfor) __attribute__ ((regparm(2)));
void *hook_or_detect_cygwin (const char *, const void *, WORD&) __attribute__ ((regparm (3)));
/* Time related */
void __stdcall totimeval (struct timeval *, FILETIME *, int, int);
long __stdcall to_time_t (FILETIME *);
void __stdcall to_timestruc_t (FILETIME *, timestruc_t *);
void __stdcall time_as_timestruc_t (timestruc_t *);
void __stdcall timeval_to_filetime (const struct timeval *, FILETIME *);
/* Console related */
void __stdcall set_console_title (char *);
void init_console_handler (BOOL);
void init_global_security ();
int __stdcall check_invalid_virtual_addr (const void *s, unsigned sz) __attribute__ ((regparm(2)));
ssize_t check_iovec (const struct iovec *, int, bool) __attribute__ ((regparm(3)));
#define check_iovec_for_read(a, b) check_iovec ((a), (b), false)
#define check_iovec_for_write(a, b) check_iovec ((a), (b), true)
#define set_winsock_errno() __set_winsock_errno (__FUNCTION__, __LINE__)
void __set_winsock_errno (const char *fn, int ln) __attribute__ ((regparm(2)));
extern bool wsock_started;
/* Printf type functions */
extern "C" void __api_fatal (const char *, ...) __attribute__ ((noreturn));
extern "C" int __small_sprintf (char *dst, const char *fmt, ...) /*__attribute__ ((regparm (2)))*/;
extern "C" int __small_vsprintf (char *dst, const char *fmt, va_list ap) /*__attribute__ ((regparm (3)))*/;
extern void multiple_cygwin_problem (const char *, unsigned, unsigned);
extern "C" void vklog (int priority, const char *message, va_list ap);
extern "C" void klog (int priority, const char *message, ...);
bool child_copy (HANDLE, bool, ...);
int symlink_worker (const char *, const char *, bool, bool)
__attribute__ ((regparm (3)));
class path_conv;
int fcntl_worker (int fd, int cmd, void *arg);
extern "C" int low_priority_sleep (DWORD) __attribute__ ((regparm (1)));
#define SLEEP_0_STAY_LOW INFINITE
/* Returns the real page size, not the allocation size. */
size_t getsystempagesize ();
/* mmap functions. */
void mmap_init ();
bool mmap_is_attached_page (ULONG_PTR);
int winprio_to_nice (DWORD) __attribute__ ((regparm (1)));
DWORD nice_to_winprio (int &) __attribute__ ((regparm (1)));
bool __stdcall create_pipe (PHANDLE hr, PHANDLE, LPSECURITY_ATTRIBUTES, DWORD)
__attribute__ ((regparm (3)));
#define CreatePipe create_pipe
inline bool flush_file_buffers (HANDLE h)
{
return (GetFileType (h) != FILE_TYPE_PIPE) ? FlushFileBuffers (h) : true;
}
#define FlushFileBuffers flush_file_buffers
/**************************** Exports ******************************/
extern "C" {
int cygwin_select (int , fd_set *, fd_set *, fd_set *,
struct timeval *to);
int cygwin_gethostname (char *__name, size_t __len);
extern DWORD binmode;
extern char _data_start__, _data_end__, _bss_start__, _bss_end__;
extern void (*__CTOR_LIST__) (void);
extern void (*__DTOR_LIST__) (void);
extern SYSTEM_INFO system_info;
};
/*************************** Unsorted ******************************/
#define WM_ASYNCIO 0x8000 // WM_APP
#define STD_RBITS (S_IRUSR | S_IRGRP | S_IROTH)
#define STD_WBITS (S_IWUSR)
#define STD_XBITS (S_IXUSR | S_IXGRP | S_IXOTH)
#define NO_W ~(S_IWUSR | S_IWGRP | S_IWOTH)
#define NO_R ~(S_IRUSR | S_IRGRP | S_IROTH)
#define NO_X ~(S_IXUSR | S_IXGRP | S_IXOTH)
/* The title on program start. */
extern char *old_title;
extern bool display_title;
extern bool in_forkee;
extern HANDLE hMainThread;
extern HANDLE hMainProc;
extern HANDLE hProcToken;
extern HANDLE hProcImpToken;
extern HANDLE hExeced;
extern bool cygwin_testing;
extern char almost_null[];
#endif /* defined __cplusplus */
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