(__ctype_default): New character class array for default ASCII character set. (__ctype_iso): New array of character class array for ISO charsets. (__ctype_cp): Ditto for singlebyte Windows codepages. (tolower): Implement as distinct function to support any singlebyte charset. (toupper): Ditto. (__set_ctype): New function to copy singlebyte character classes corresponding to current charset to ctype_b array. Align copyright text to upstream. * dcrt0.cc (dll_crt0_1): Reset current locale to "C" per POSIX. * environ.cc (set_file_api_mode): Remove. (codepage_init): Remove. (parse_thing): Remove "codepage" setting. (environ_init): Set locale according to environment settings, or to current codepage, before converting environment to multibyte. * fhandler.h (fhandler_console::write_replacement_char): Drop argument. * fhandler_console.cc (dev_console::str_to_con): Call sys_cp_mbstowcs rather than MultiByteToWideChar. (fhandler_console::write_replacement_char): Always print a funny half filled square if a character isn't in the current charset. (fhandler_console::write_normal): Convert to using __mbtowc rather than next_char. * fork.cc (frok::child): Drop call to set_file_api_mode. * globals.cc (enum codepage_type) Remove. (current_codepage): Remove. * miscfuncs.cc (cygwin_wcslwr): Unused, dangerous. Remove. (cygwin_wcsupr): Ditto. (is_cp_multibyte): Remove. (next_char): Remove. * miscfuncs.h (is_cp_multibyte): Drop declaration. (next_char): Ditto. * strfuncs.cc (get_cp): Remove. (__db_wctomb): New function to implement _wctomb_r functionality for doublebyte charsets using WideCharToMultiByte. (__sjis_wctomb): New function to replace unusable newlib function. (__jis_wctomb): Ditto. (__eucjp_wctomb): Ditto. (__gbk_wctomb): New function. (__kr_wctomb): Ditto. (__big5_wctomb): Ditto. (__db_mbtowc): New function to implement _mbtowc_r functionality for doublebyte charsets using MultiByteToWideChar. (__sjis_mbtowc): New function to replace unusable newlib function. (__jis_mbtowc): Ditto. (__eucjp_mbtowc): Ditto. (__gbk_mbtowc): New function. (__kr_mbtowc): New function (__big5_mbtowc): New function (__set_charset_from_codepage): New function. (sys_wcstombs): Reimplement, basically using same wide char to multibyte conversion as newlib's application level functions. Plus extras. Add lengthy comment to explain. Change return type to size_t. (sys_wcstombs_alloc): Just use sys_wcstombs. Change return type to size_t. (sys_cp_mbstowcs): Replace sys_mbstowcs, take additional codepage argument. Explain why. Change return type to size_t. (sys_mbstowcs_alloc): Just use sys_mbstowcs. Change return type to size_t. * wchar.h: Declare internal functions implemented in strfuncs.cc. (wcscasecmp): Remove. (wcsncasecmp): Remove. (wcslwr): Remove. (wcsupr): Remove. * winsup.h (codepage_init): Remove declaration. (get_cp): Ditto. (sys_wcstombs): Align declaration to new implementation. (sys_wcstombs_alloc): Ditto. (sys_cp_mbstowcs): Add declaration. (sys_mbstowcs): Define as inline function. (sys_mbstowcs_alloc): Align declaration to new implementation. (set_file_api_mode): Remove declaration. * include/ctype.h (isblank): Redefine to use _B character class. (toupper): Remove ASCII-only definition. (tolower): Ditto.
		
			
				
	
	
		
			415 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			415 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/* miscfuncs.cc: misc funcs that don't belong anywhere else
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   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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   2005, 2006, 2007, 2008 Red Hat, Inc.
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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 <sys/uio.h>
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#include <assert.h>
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#include <alloca.h>
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#include <limits.h>
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#include <wchar.h>
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#include <wingdi.h>
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#include <winuser.h>
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#include <winnls.h>
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#include "cygtls.h"
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#include "ntdll.h"
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long tls_ix = -1;
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const char case_folded_lower[] NO_COPY = {
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   0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,  15,
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  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,
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  32, '!', '"', '#', '$', '%', '&',  39, '(', ')', '*', '+', ',', '-', '.', '/',
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 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
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 '@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '[',  92, ']', '^', '_',
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 '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 127,
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 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
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 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
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 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
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 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
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 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
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 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
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 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
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 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
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};
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const char case_folded_upper[] NO_COPY = {
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   0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,  15,
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  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,
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  32, '!', '"', '#', '$', '%', '&',  39, '(', ')', '*', '+', ',', '-', '.', '/',
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 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
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 '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[',  92, ']', '^', '_',
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 '`', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~', 127,
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 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
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 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
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 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
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 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
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 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
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 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
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 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
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 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
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};
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const char isalpha_array[] NO_COPY = {
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
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0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,   0,   0,   0,   0,   0,
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   0,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
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0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
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   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0
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};
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extern "C" int __stdcall
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cygwin_wcscasecmp (const wchar_t *ws, const wchar_t *wt)
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{
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  UNICODE_STRING us, ut;
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  RtlInitUnicodeString (&us, ws);
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  RtlInitUnicodeString (&ut, wt);
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  return RtlCompareUnicodeString (&us, &ut, TRUE);
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}
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extern "C" int __stdcall
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cygwin_wcsncasecmp (const wchar_t  *ws, const wchar_t *wt, size_t n)
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{
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  UNICODE_STRING us, ut;
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  size_t ls = 0, lt = 0;
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  while (ws[ls] && ls < n)
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    ++ls;
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  RtlInitCountedUnicodeString (&us, ws, ls * sizeof (WCHAR));
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  while (wt[lt] && lt < n)
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    ++lt;
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  RtlInitCountedUnicodeString (&ut, wt, lt * sizeof (WCHAR));
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  return RtlCompareUnicodeString (&us, &ut, TRUE);
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}
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extern "C" int __stdcall
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cygwin_strcasecmp (const char *cs, const char *ct)
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{
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  UNICODE_STRING us, ut;
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  ULONG len;
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  len = (strlen (cs) + 1) * sizeof (WCHAR);
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  RtlInitEmptyUnicodeString (&us, (PWCHAR) alloca (len), len);
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  us.Length = sys_mbstowcs (us.Buffer, us.MaximumLength, cs) * sizeof (WCHAR);
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  len = (strlen (ct) + 1) * sizeof (WCHAR);
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  RtlInitEmptyUnicodeString (&ut, (PWCHAR) alloca (len), len);
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  ut.Length = sys_mbstowcs (ut.Buffer, ut.MaximumLength, ct) * sizeof (WCHAR);
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  return RtlCompareUnicodeString (&us, &ut, TRUE);
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}
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extern "C" int __stdcall
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cygwin_strncasecmp (const char *cs, const char *ct, size_t n)
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{
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  UNICODE_STRING us, ut;
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  ULONG len;
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  size_t ls = 0, lt = 0;
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  while (cs[ls] && ls < n)
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    ++ls;
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  len = (ls + 1) * sizeof (WCHAR);
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  RtlInitEmptyUnicodeString (&us, (PWCHAR) alloca (len), len);
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  us.Length = sys_mbstowcs (us.Buffer, ls + 1, cs, ls) * sizeof (WCHAR);
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  while (ct[lt] && lt < n)
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    ++lt;
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  len = (lt + 1) * sizeof (WCHAR);
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  RtlInitEmptyUnicodeString (&ut, (PWCHAR) alloca (len), len);
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  ut.Length = sys_mbstowcs (ut.Buffer, lt + 1, ct, lt)  * sizeof (WCHAR);
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  return RtlCompareUnicodeString (&us, &ut, TRUE);
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}
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extern "C" char * __stdcall
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cygwin_strlwr (char *string)
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{
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  UNICODE_STRING us;
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  size_t len = (strlen (string) + 1) * sizeof (WCHAR);
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  us.MaximumLength = len; us.Buffer = (PWCHAR) alloca (len);
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  us.Length = sys_mbstowcs (us.Buffer, len, string) * sizeof (WCHAR)
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	      - sizeof (WCHAR);
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  RtlDowncaseUnicodeString (&us, &us, FALSE);
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  sys_wcstombs (string, len / sizeof (WCHAR), us.Buffer);
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  return string;
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}
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extern "C" char * __stdcall
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cygwin_strupr (char *string)
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{
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  UNICODE_STRING us;
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  size_t len = (strlen (string) + 1) * sizeof (WCHAR);
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  us.MaximumLength = len; us.Buffer = (PWCHAR) alloca (len);
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  us.Length = sys_mbstowcs (us.Buffer, len, string) * sizeof (WCHAR)
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	      - sizeof (WCHAR);
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  RtlUpcaseUnicodeString (&us, &us, FALSE);
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  sys_wcstombs (string, len / sizeof (WCHAR), us.Buffer);
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  return string;
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}
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int __stdcall
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check_invalid_virtual_addr (const void *s, unsigned sz)
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{
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  MEMORY_BASIC_INFORMATION mbuf;
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  const void *end;
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  for (end = (char *) s + sz; s < end;
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       s = (char *) mbuf.BaseAddress + mbuf.RegionSize)
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    if (!VirtualQuery (s, &mbuf, sizeof mbuf))
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      return EINVAL;
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  return 0;
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}
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static char __attribute__ ((noinline))
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dummytest (volatile char *p)
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{
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  return *p;
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}
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ssize_t
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check_iovec (const struct iovec *iov, int iovcnt, bool forwrite)
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{
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  if (iovcnt <= 0 || iovcnt > IOV_MAX)
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    {
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      set_errno (EINVAL);
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      return -1;
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    }
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  myfault efault;
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  if (efault.faulted (EFAULT))
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    return -1;
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  size_t tot = 0;
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  while (iovcnt != 0)
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    {
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      if (iov->iov_len > SSIZE_MAX || (tot += iov->iov_len) > SSIZE_MAX)
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	{
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	  set_errno (EINVAL);
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	  return -1;
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	}
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      volatile char *p = ((char *) iov->iov_base) + iov->iov_len - 1;
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      if (!iov->iov_len)
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	/* nothing to do */;
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      else if (!forwrite)
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	*p  = dummytest (p);
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      else
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	dummytest (p);
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      iov++;
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      iovcnt--;
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    }
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  assert (tot <= SSIZE_MAX);
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  return (ssize_t) tot;
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}
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extern "C" int
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low_priority_sleep (DWORD secs)
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{
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  HANDLE thisthread = GetCurrentThread ();
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  int curr_prio = GetThreadPriority (thisthread);
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  bool staylow;
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  if (secs != INFINITE)
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    staylow = false;
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  else
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    {
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      secs = 0;
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      staylow = true;
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    }
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  if (!secs)
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    {
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      for (int i = 0; i < 3; i++)
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	SwitchToThread ();
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    }
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  else
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    {
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      int new_prio;
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      if (GetCurrentThreadId () == cygthread::main_thread_id)
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	new_prio = THREAD_PRIORITY_LOWEST;
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      else
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	new_prio = GetThreadPriority (hMainThread);
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      if (curr_prio != new_prio)
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	/* Force any threads in normal priority to be scheduled */
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	SetThreadPriority (thisthread, new_prio);
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      Sleep (secs);
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      if (!staylow && curr_prio != new_prio)
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	SetThreadPriority (thisthread, curr_prio);
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    }
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  return curr_prio;
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}
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/* Get a default value for the nice factor.  When changing these values,
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   have a look into the below function nice_to_winprio.  The values must
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   match the layout of the static "priority" array. */
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int
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winprio_to_nice (DWORD prio)
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{
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  switch (prio)
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    {
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      case REALTIME_PRIORITY_CLASS:
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	return -20;
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      case HIGH_PRIORITY_CLASS:
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	return -16;
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      case ABOVE_NORMAL_PRIORITY_CLASS:
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	return -8;
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      case NORMAL_PRIORITY_CLASS:
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	return 0;
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      case BELOW_NORMAL_PRIORITY_CLASS:
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	return 8;
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      case IDLE_PRIORITY_CLASS:
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	return 16;
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    }
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  return 0;
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}
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/* Get a Win32 priority matching the incoming nice factor.  The incoming
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   nice is limited to the interval [-NZERO,NZERO-1]. */
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DWORD
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nice_to_winprio (int &nice)
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{
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  static const DWORD priority[] NO_COPY =
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    {
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      REALTIME_PRIORITY_CLASS,		/*  0 */
 | 
						|
      HIGH_PRIORITY_CLASS,		/*  1 */
 | 
						|
      HIGH_PRIORITY_CLASS,
 | 
						|
      HIGH_PRIORITY_CLASS,
 | 
						|
      HIGH_PRIORITY_CLASS,
 | 
						|
      HIGH_PRIORITY_CLASS,
 | 
						|
      HIGH_PRIORITY_CLASS,
 | 
						|
      HIGH_PRIORITY_CLASS,		/*  7 */
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,	/*  8 */
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,
 | 
						|
      ABOVE_NORMAL_PRIORITY_CLASS,	/* 15 */
 | 
						|
      NORMAL_PRIORITY_CLASS,		/* 16 */
 | 
						|
      NORMAL_PRIORITY_CLASS,
 | 
						|
      NORMAL_PRIORITY_CLASS,
 | 
						|
      NORMAL_PRIORITY_CLASS,
 | 
						|
      NORMAL_PRIORITY_CLASS,
 | 
						|
      NORMAL_PRIORITY_CLASS,
 | 
						|
      NORMAL_PRIORITY_CLASS,
 | 
						|
      NORMAL_PRIORITY_CLASS,		/* 23 */
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,	/* 24 */
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,
 | 
						|
      BELOW_NORMAL_PRIORITY_CLASS,	/* 31 */
 | 
						|
      IDLE_PRIORITY_CLASS,		/* 32 */
 | 
						|
      IDLE_PRIORITY_CLASS,
 | 
						|
      IDLE_PRIORITY_CLASS,
 | 
						|
      IDLE_PRIORITY_CLASS,
 | 
						|
      IDLE_PRIORITY_CLASS,
 | 
						|
      IDLE_PRIORITY_CLASS,
 | 
						|
      IDLE_PRIORITY_CLASS,
 | 
						|
      IDLE_PRIORITY_CLASS		/* 39 */
 | 
						|
    };
 | 
						|
  if (nice < -NZERO)
 | 
						|
    nice = -NZERO;
 | 
						|
  else if (nice > NZERO - 1)
 | 
						|
    nice = NZERO - 1;
 | 
						|
  DWORD prio = priority[nice + NZERO];
 | 
						|
  if (!wincap.has_extended_priority_class ()
 | 
						|
      && (prio == BELOW_NORMAL_PRIORITY_CLASS
 | 
						|
	  || prio == ABOVE_NORMAL_PRIORITY_CLASS))
 | 
						|
    prio = NORMAL_PRIORITY_CLASS;
 | 
						|
  return prio;
 | 
						|
}
 | 
						|
 | 
						|
#undef CreatePipe
 | 
						|
bool
 | 
						|
create_pipe (PHANDLE hr,PHANDLE hw, LPSECURITY_ATTRIBUTES sa, DWORD n)
 | 
						|
{
 | 
						|
  for (int i = 0; i < 10; i++)
 | 
						|
    if (CreatePipe (hr, hw, sa, n))
 | 
						|
      return true;
 | 
						|
    else if (GetLastError () == ERROR_PIPE_BUSY && i < 9)
 | 
						|
      Sleep (10);
 | 
						|
    else
 | 
						|
      break;
 | 
						|
  return false;
 | 
						|
}
 | 
						|
 | 
						|
/* backslashify: Convert all forward slashes in src path to back slashes
 | 
						|
   in dst path.  Add a trailing slash to dst when trailing_slash_p arg
 | 
						|
   is set to 1. */
 | 
						|
 | 
						|
void
 | 
						|
backslashify (const char *src, char *dst, bool trailing_slash_p)
 | 
						|
{
 | 
						|
  const char *start = src;
 | 
						|
 | 
						|
  while (*src)
 | 
						|
    {
 | 
						|
      if (*src == '/')
 | 
						|
	*dst++ = '\\';
 | 
						|
      else
 | 
						|
	*dst++ = *src;
 | 
						|
      ++src;
 | 
						|
    }
 | 
						|
  if (trailing_slash_p
 | 
						|
      && src > start
 | 
						|
      && !isdirsep (src[-1]))
 | 
						|
    *dst++ = '\\';
 | 
						|
  *dst++ = 0;
 | 
						|
}
 | 
						|
 | 
						|
/* slashify: Convert all back slashes in src path to forward slashes
 | 
						|
   in dst path.  Add a trailing slash to dst when trailing_slash_p arg
 | 
						|
   is set to 1. */
 | 
						|
 | 
						|
void
 | 
						|
slashify (const char *src, char *dst, bool trailing_slash_p)
 | 
						|
{
 | 
						|
  const char *start = src;
 | 
						|
 | 
						|
  while (*src)
 | 
						|
    {
 | 
						|
      if (*src == '\\')
 | 
						|
	*dst++ = '/';
 | 
						|
      else
 | 
						|
	*dst++ = *src;
 | 
						|
      ++src;
 | 
						|
    }
 | 
						|
  if (trailing_slash_p
 | 
						|
      && src > start
 | 
						|
      && !isdirsep (src[-1]))
 | 
						|
    *dst++ = '/';
 | 
						|
  *dst++ = 0;
 | 
						|
}
 |