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RE: Problem in Win32CORE when building PAR-Packer-0.975 with bleadperl on Win32
[perl5.git] / win32 / win32.c
CommitLineData
68dc0745
PP
1/* WIN32.C
2 *
3fadfdf1 3 * (c) 1995 Microsoft Corporation. All rights reserved.
68dc0745
PP
4 * Developed by hip communications inc., http://info.hip.com/info/
5 * Portions (c) 1993 Intergraph Corporation. All rights reserved.
6 *
7 * You may distribute under the terms of either the GNU General Public
8 * License or the Artistic License, as specified in the README file.
9 */
3fadfdf1 10#define PERLIO_NOT_STDIO 0
0a753a76
PP
11#define WIN32_LEAN_AND_MEAN
12#define WIN32IO_IS_STDIO
13#include <tchar.h>
a835ef8a
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14#ifdef __GNUC__
15#define Win32_Winsock
16#endif
0a753a76 17#include <windows.h>
aeecf691
JD
18#ifndef HWND_MESSAGE
19# define HWND_MESSAGE ((HWND)-3)
20#endif
35cf1ab6 21#ifndef WC_NO_BEST_FIT_CHARS
3839a0fa 22# define WC_NO_BEST_FIT_CHARS 0x00000400 /* requires Windows 2000 or later */
35cf1ab6 23#endif
5db10396 24#include <winnt.h>
542cb85f 25#include <tlhelp32.h>
5db10396 26#include <io.h>
c843839f 27#include <signal.h>
0a753a76 28
542cb85f
JD
29#define SystemProcessesAndThreadsInformation 5
30
31/* Inline some definitions from the DDK */
32typedef struct {
33 USHORT Length;
34 USHORT MaximumLength;
35 PWSTR Buffer;
36} UNICODE_STRING;
37
38typedef struct {
39 ULONG NextEntryDelta;
40 ULONG ThreadCount;
41 ULONG Reserved1[6];
42 LARGE_INTEGER CreateTime;
43 LARGE_INTEGER UserTime;
44 LARGE_INTEGER KernelTime;
45 UNICODE_STRING ProcessName;
46 LONG BasePriority;
47 ULONG ProcessId;
48 ULONG InheritedFromProcessId;
49 /* Remainder of the structure depends on the Windows version,
50 * but we don't need those additional fields anyways... */
51} SYSTEM_PROCESSES;
52
68dc0745 53/* #include "config.h" */
0a753a76 54
0a753a76
PP
55#if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO)
56#define PerlIO FILE
57#endif
58
7a9ec5a3 59#include <sys/stat.h>
0a753a76
PP
60#include "EXTERN.h"
61#include "perl.h"
c69f6586
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62
63#define NO_XSLOCKS
c5be433b 64#define PERL_NO_GET_CONTEXT
ad2e33dc 65#include "XSUB.h"
c69f6586
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66
67#include "Win32iop.h"
0a753a76 68#include <fcntl.h>
5b0d9cbe
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69#ifndef __GNUC__
70/* assert.h conflicts with #define of assert in perl.h */
0a753a76 71#include <assert.h>
5b0d9cbe 72#endif
0a753a76
PP
73#include <string.h>
74#include <stdarg.h>
ad2e33dc 75#include <float.h>
ad0751ec 76#include <time.h>
3730b96e 77#if defined(_MSC_VER) || defined(__MINGW32__)
ad0751ec
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78#include <sys/utime.h>
79#else
80#include <utime.h>
81#endif
5b0d9cbe 82#ifdef __GNUC__
3fadfdf1 83/* Mingw32 defaults to globing command line
5b0d9cbe
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84 * So we turn it off like this:
85 */
86int _CRT_glob = 0;
87#endif
88
7c5b6093
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89#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION==1)
90/* Mingw32-1.1 is missing some prototypes */
d06fc7d4 91START_EXTERN_C
f8fb7c90
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92FILE * _wfopen(LPCWSTR wszFileName, LPCWSTR wszMode);
93FILE * _wfdopen(int nFd, LPCWSTR wszMode);
94FILE * _freopen(LPCWSTR wszFileName, LPCWSTR wszMode, FILE * pOldStream);
95int _flushall();
96int _fcloseall();
d06fc7d4 97END_EXTERN_C
2b260de0
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98#endif
99
100#if defined(__BORLANDC__)
0b94c7bb
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101# define _stat stat
102# define _utimbuf utimbuf
103#endif
104
6890e559
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105#define EXECF_EXEC 1
106#define EXECF_SPAWN 2
107#define EXECF_SPAWN_NOWAIT 3
108
32e30700
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109#if defined(PERL_IMPLICIT_SYS)
110# undef win32_get_privlib
111# define win32_get_privlib g_win32_get_privlib
112# undef win32_get_sitelib
113# define win32_get_sitelib g_win32_get_sitelib
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114# undef win32_get_vendorlib
115# define win32_get_vendorlib g_win32_get_vendorlib
32e30700
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116# undef getlogin
117# define getlogin g_getlogin
118#endif
119
ce1da67e 120static void get_shell(void);
dff6d3cd 121static long tokenize(const char *str, char **dest, char ***destv);
08039b81
SH
122static int do_spawn2(pTHX_ const char *cmd, int exectype);
123static BOOL has_shell_metachars(const char *ptr);
2d7a9237 124static long filetime_to_clock(PFILETIME ft);
ad0751ec 125static BOOL filetime_from_time(PFILETIME ft, time_t t);
c5be433b 126static char * get_emd_part(SV **leading, char *trailing, ...);
0aaad0ff
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127static void remove_dead_process(long deceased);
128static long find_pid(int pid);
129static char * qualified_path(const char *cmd);
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130static char * win32_get_xlib(const char *pl, const char *xlib,
131 const char *libname);
132
7766f137
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133#ifdef USE_ITHREADS
134static void remove_dead_pseudo_process(long child);
135static long find_pseudo_pid(int pid);
136#endif
c69f6586 137
7766f137 138START_EXTERN_C
2d7a9237 139HANDLE w32_perldll_handle = INVALID_HANDLE_VALUE;
8ac9c18d 140char w32_module_name[MAX_PATH+1];
7766f137
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141END_EXTERN_C
142
aeecf691 143static OSVERSIONINFO g_osver = {0, 0, 0, 0, 0, ""};
50892819 144
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145static HANDLE (WINAPI *pfnCreateToolhelp32Snapshot)(DWORD, DWORD) = NULL;
146static BOOL (WINAPI *pfnProcess32First)(HANDLE, PROCESSENTRY32*) = NULL;
147static BOOL (WINAPI *pfnProcess32Next)(HANDLE, PROCESSENTRY32*) = NULL;
148static LONG (WINAPI *pfnZwQuerySystemInformation)(UINT, PVOID, ULONG, PULONG);
149
3a00b83e
SH
150#ifdef __BORLANDC__
151/* Silence STDERR grumblings from Borland's math library. */
152DllExport int
153_matherr(struct _exception *a)
154{
155 PERL_UNUSED_VAR(a);
156 return 1;
157}
158#endif
159
58d049f0
JD
160/* VS2005 (MSC version 14) provides a mechanism to set an invalid
161 * parameter handler. This functionality is not available in the
162 * 64-bit compiler from the Platform SDK, which unfortunately also
163 * believes itself to be MSC version 14.
164 *
165 * There is no #define related to _set_invalid_parameter_handler(),
166 * but we can check for one of the constants defined for
167 * _set_abort_behavior(), which was introduced into stdlib.h at
168 * the same time.
169 */
170
171#if _MSC_VER >= 1400 && defined(_WRITE_ABORT_MSG)
172# define SET_INVALID_PARAMETER_HANDLER
173#endif
174
175#ifdef SET_INVALID_PARAMETER_HANDLER
0448a0bd
SH
176void my_invalid_parameter_handler(const wchar_t* expression,
177 const wchar_t* function,
178 const wchar_t* file,
179 unsigned int line,
180 uintptr_t pReserved)
181{
182# ifdef _DEBUG
183 wprintf(L"Invalid parameter detected in function %s."
184 L" File: %s Line: %d\n", function, file, line);
185 wprintf(L"Expression: %s\n", expression);
186# endif
187}
188#endif
189
3fadfdf1 190int
ba106d47
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191IsWin95(void)
192{
aeecf691 193 return (g_osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS);
3fe9a6f1
PP
194}
195
196int
ba106d47
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197IsWinNT(void)
198{
aeecf691 199 return (g_osver.dwPlatformId == VER_PLATFORM_WIN32_NT);
3fe9a6f1 200}
0a753a76 201
3839a0fa
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202int
203IsWin2000(void)
204{
205 return (g_osver.dwMajorVersion > 4);
206}
207
2fa86c13
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208EXTERN_C void
209set_w32_module_name(void)
210{
aa2b96ec 211 /* this function may be called at DLL_PROCESS_ATTACH time */
2fa86c13 212 char* ptr;
aa2b96ec
JD
213 HMODULE module = (HMODULE)((w32_perldll_handle == INVALID_HANDLE_VALUE)
214 ? GetModuleHandle(NULL)
215 : w32_perldll_handle);
2fa86c13 216
aa2b96ec
JD
217 OSVERSIONINFO osver; /* g_osver may not yet be initialized */
218 osver.dwOSVersionInfoSize = sizeof(osver);
219 GetVersionEx(&osver);
be9da6a9 220
3839a0fa 221 if (osver.dwMajorVersion > 4) {
aa2b96ec
JD
222 WCHAR modulename[MAX_PATH];
223 WCHAR fullname[MAX_PATH];
224 char *ansi;
225
226 GetModuleFileNameW(module, modulename, sizeof(modulename)/sizeof(WCHAR));
227
228 /* Make sure we get an absolute pathname in case the module was loaded
229 * explicitly by LoadLibrary() with a relative path. */
230 GetFullPathNameW(modulename, sizeof(fullname)/sizeof(WCHAR), fullname, NULL);
231
232 /* remove \\?\ prefix */
233 if (memcmp(fullname, L"\\\\?\\", 4*sizeof(WCHAR)) == 0)
234 memmove(fullname, fullname+4, (wcslen(fullname+4)+1)*sizeof(WCHAR));
235
236 ansi = win32_ansipath(fullname);
237 my_strlcpy(w32_module_name, ansi, sizeof(w32_module_name));
238 win32_free(ansi);
239 }
240 else {
241 GetModuleFileName(module, w32_module_name, sizeof(w32_module_name));
242
243 /* remove \\?\ prefix */
244 if (memcmp(w32_module_name, "\\\\?\\", 4) == 0)
245 memmove(w32_module_name, w32_module_name+4, strlen(w32_module_name+4)+1);
246
247 /* try to get full path to binary (which may be mangled when perl is
248 * run from a 16-bit app) */
249 /*PerlIO_printf(Perl_debug_log, "Before %s\n", w32_module_name);*/
250 win32_longpath(w32_module_name);
251 /*PerlIO_printf(Perl_debug_log, "After %s\n", w32_module_name);*/
252 }
2fa86c13
GS
253
254 /* normalize to forward slashes */
255 ptr = w32_module_name;
256 while (*ptr) {
257 if (*ptr == '\\')
258 *ptr = '/';
259 ++ptr;
260 }
261}
262
c5be433b 263/* *svp (if non-NULL) is expected to be POK (valid allocated SvPVX(*svp)) */
51371543 264static char*
c5be433b 265get_regstr_from(HKEY hkey, const char *valuename, SV **svp)
349ad1fe
GS
266{
267 /* Retrieve a REG_SZ or REG_EXPAND_SZ from the registry */
00dc2f4f
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268 HKEY handle;
269 DWORD type;
270 const char *subkey = "Software\\Perl";
349ad1fe 271 char *str = Nullch;
00dc2f4f
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272 long retval;
273
274 retval = RegOpenKeyEx(hkey, subkey, 0, KEY_READ, &handle);
349ad1fe 275 if (retval == ERROR_SUCCESS) {
51371543
GS
276 DWORD datalen;
277 retval = RegQueryValueEx(handle, valuename, 0, &type, NULL, &datalen);
1c94caf4
GS
278 if (retval == ERROR_SUCCESS
279 && (type == REG_SZ || type == REG_EXPAND_SZ))
280 {
acfe0abc 281 dTHX;
c5be433b
GS
282 if (!*svp)
283 *svp = sv_2mortal(newSVpvn("",0));
284 SvGROW(*svp, datalen);
51371543 285 retval = RegQueryValueEx(handle, valuename, 0, NULL,
c5be433b 286 (PBYTE)SvPVX(*svp), &datalen);
51371543 287 if (retval == ERROR_SUCCESS) {
c5be433b
GS
288 str = SvPVX(*svp);
289 SvCUR_set(*svp,datalen-1);
51371543 290 }
00dc2f4f
GS
291 }
292 RegCloseKey(handle);
293 }
349ad1fe 294 return str;
00dc2f4f
GS
295}
296
c5be433b 297/* *svp (if non-NULL) is expected to be POK (valid allocated SvPVX(*svp)) */
51371543 298static char*
c5be433b 299get_regstr(const char *valuename, SV **svp)
00dc2f4f 300{
c5be433b 301 char *str = get_regstr_from(HKEY_CURRENT_USER, valuename, svp);
349ad1fe 302 if (!str)
c5be433b 303 str = get_regstr_from(HKEY_LOCAL_MACHINE, valuename, svp);
349ad1fe 304 return str;
00dc2f4f
GS
305}
306
c5be433b 307/* *prev_pathp (if non-NULL) is expected to be POK (valid allocated SvPVX(sv)) */
e5a95ffb 308static char *
c5be433b 309get_emd_part(SV **prev_pathp, char *trailing_path, ...)
00dc2f4f 310{
dc9e4912 311 char base[10];
e5a95ffb 312 va_list ap;
e24c7c18 313 char mod_name[MAX_PATH+1];
00dc2f4f 314 char *ptr;
e5a95ffb
GS
315 char *optr;
316 char *strip;
273cf8d1 317 STRLEN baselen;
e5a95ffb
GS
318
319 va_start(ap, trailing_path);
320 strip = va_arg(ap, char *);
321
273cf8d1
GS
322 sprintf(base, "%d.%d", (int)PERL_REVISION, (int)PERL_VERSION);
323 baselen = strlen(base);
dc9e4912 324
8ac9c18d 325 if (!*w32_module_name) {
2fa86c13 326 set_w32_module_name();
95140b98 327 }
8ac9c18d 328 strcpy(mod_name, w32_module_name);
95140b98 329 ptr = strrchr(mod_name, '/');
e5a95ffb
GS
330 while (ptr && strip) {
331 /* look for directories to skip back */
332 optr = ptr;
00dc2f4f 333 *ptr = '\0';
95140b98 334 ptr = strrchr(mod_name, '/');
1c39adb2
GS
335 /* avoid stripping component if there is no slash,
336 * or it doesn't match ... */
e5a95ffb 337 if (!ptr || stricmp(ptr+1, strip) != 0) {
273cf8d1 338 /* ... but not if component matches m|5\.$patchlevel.*| */
1c39adb2 339 if (!ptr || !(*strip == '5' && *(ptr+1) == '5'
273cf8d1
GS
340 && strncmp(strip, base, baselen) == 0
341 && strncmp(ptr+1, base, baselen) == 0))
95140b98
GS
342 {
343 *optr = '/';
80252599
GS
344 ptr = optr;
345 }
00dc2f4f 346 }
e5a95ffb 347 strip = va_arg(ap, char *);
00dc2f4f 348 }
e5a95ffb
GS
349 if (!ptr) {
350 ptr = mod_name;
351 *ptr++ = '.';
95140b98 352 *ptr = '/';
00dc2f4f 353 }
e5a95ffb
GS
354 va_end(ap);
355 strcpy(++ptr, trailing_path);
356
dc9e4912 357 /* only add directory if it exists */
349ad1fe 358 if (GetFileAttributes(mod_name) != (DWORD) -1) {
dc9e4912 359 /* directory exists */
acfe0abc 360 dTHX;
c5be433b
GS
361 if (!*prev_pathp)
362 *prev_pathp = sv_2mortal(newSVpvn("",0));
f0c8bec2
SH
363 else if (SvPVX(*prev_pathp))
364 sv_catpvn(*prev_pathp, ";", 1);
c5be433b
GS
365 sv_catpv(*prev_pathp, mod_name);
366 return SvPVX(*prev_pathp);
00dc2f4f 367 }
00dc2f4f 368
cf11f4bf 369 return Nullch;
00dc2f4f
GS
370}
371
372char *
4ea817c6 373win32_get_privlib(const char *pl)
00dc2f4f 374{
acfe0abc 375 dTHX;
e5a95ffb
GS
376 char *stdlib = "lib";
377 char buffer[MAX_PATH+1];
51371543 378 SV *sv = Nullsv;
00dc2f4f 379
e5a95ffb
GS
380 /* $stdlib = $HKCU{"lib-$]"} || $HKLM{"lib-$]"} || $HKCU{"lib"} || $HKLM{"lib"} || ""; */
381 sprintf(buffer, "%s-%s", stdlib, pl);
c5be433b
GS
382 if (!get_regstr(buffer, &sv))
383 (void)get_regstr(stdlib, &sv);
00dc2f4f 384
e5a95ffb 385 /* $stdlib .= ";$EMD/../../lib" */
c5be433b 386 return get_emd_part(&sv, stdlib, ARCHNAME, "bin", Nullch);
00dc2f4f
GS
387}
388
4ea817c6
GS
389static char *
390win32_get_xlib(const char *pl, const char *xlib, const char *libname)
00dc2f4f 391{
acfe0abc 392 dTHX;
e5a95ffb 393 char regstr[40];
e24c7c18 394 char pathstr[MAX_PATH+1];
51371543
GS
395 SV *sv1 = Nullsv;
396 SV *sv2 = Nullsv;
00dc2f4f 397
4ea817c6
GS
398 /* $HKCU{"$xlib-$]"} || $HKLM{"$xlib-$]"} . ---; */
399 sprintf(regstr, "%s-%s", xlib, pl);
c5be433b 400 (void)get_regstr(regstr, &sv1);
e5a95ffb 401
4ea817c6
GS
402 /* $xlib .=
403 * ";$EMD/" . ((-d $EMD/../../../$]) ? "../../.." : "../.."). "/$libname/$]/lib"; */
404 sprintf(pathstr, "%s/%s/lib", libname, pl);
c5be433b 405 (void)get_emd_part(&sv1, pathstr, ARCHNAME, "bin", pl, Nullch);
00dc2f4f 406
4ea817c6
GS
407 /* $HKCU{$xlib} || $HKLM{$xlib} . ---; */
408 (void)get_regstr(xlib, &sv2);
00dc2f4f 409
4ea817c6
GS
410 /* $xlib .=
411 * ";$EMD/" . ((-d $EMD/../../../$]) ? "../../.." : "../.."). "/$libname/lib"; */
412 sprintf(pathstr, "%s/lib", libname);
413 (void)get_emd_part(&sv2, pathstr, ARCHNAME, "bin", pl, Nullch);
e5a95ffb 414
51371543
GS
415 if (!sv1 && !sv2)
416 return Nullch;
417 if (!sv1)
418 return SvPVX(sv2);
419 if (!sv2)
420 return SvPVX(sv1);
e5a95ffb 421
349ad1fe
GS
422 sv_catpvn(sv1, ";", 1);
423 sv_catsv(sv1, sv2);
e5a95ffb 424
349ad1fe 425 return SvPVX(sv1);
68dc0745 426}
0a753a76 427
4ea817c6
GS
428char *
429win32_get_sitelib(const char *pl)
430{
431 return win32_get_xlib(pl, "sitelib", "site");
432}
433
434#ifndef PERL_VENDORLIB_NAME
435# define PERL_VENDORLIB_NAME "vendor"
436#endif
437
438char *
439win32_get_vendorlib(const char *pl)
440{
441 return win32_get_xlib(pl, "vendorlib", PERL_VENDORLIB_NAME);
442}
b4793f7f 443
2d7a9237 444static BOOL
08039b81 445has_shell_metachars(const char *ptr)
68dc0745
PP
446{
447 int inquote = 0;
448 char quote = '\0';
449
450 /*
451 * Scan string looking for redirection (< or >) or pipe
e200fe59
JD
452 * characters (|) that are not in a quoted string.
453 * Shell variable interpolation (%VAR%) can also happen inside strings.
68dc0745 454 */
9404a519 455 while (*ptr) {
68dc0745 456 switch(*ptr) {
e200fe59
JD
457 case '%':
458 return TRUE;
68dc0745
PP
459 case '\'':
460 case '\"':
9404a519
GS
461 if (inquote) {
462 if (quote == *ptr) {
68dc0745
PP
463 inquote = 0;
464 quote = '\0';
0a753a76 465 }
68dc0745
PP
466 }
467 else {
468 quote = *ptr;
469 inquote++;
470 }
471 break;
472 case '>':
473 case '<':
474 case '|':
9404a519 475 if (!inquote)
68dc0745
PP
476 return TRUE;
477 default:
478 break;
0a753a76 479 }
68dc0745
PP
480 ++ptr;
481 }
482 return FALSE;
0a753a76
PP
483}
484
32e30700 485#if !defined(PERL_IMPLICIT_SYS)
68dc0745
PP
486/* since the current process environment is being updated in util.c
487 * the library functions will get the correct environment
488 */
489PerlIO *
79d39d80 490Perl_my_popen(pTHX_ const char *cmd, const char *mode)
0a753a76
PP
491{
492#ifdef FIXCMD
7766f137
GS
493#define fixcmd(x) { \
494 char *pspace = strchr((x),' '); \
495 if (pspace) { \
496 char *p = (x); \
497 while (p < pspace) { \
498 if (*p == '/') \
499 *p = '\\'; \
500 p++; \
501 } \
502 } \
503 }
0a753a76
PP
504#else
505#define fixcmd(x)
506#endif
68dc0745 507 fixcmd(cmd);
45bc9206 508 PERL_FLUSHALL_FOR_CHILD;
0a753a76 509 return win32_popen(cmd, mode);
0a753a76
PP
510}
511
68dc0745 512long
4f63d024 513Perl_my_pclose(pTHX_ PerlIO *fp)
0a753a76
PP
514{
515 return win32_pclose(fp);
516}
c69f6586 517#endif
0a753a76 518
0cb96387
GS
519DllExport unsigned long
520win32_os_id(void)
0a753a76 521{
aeecf691 522 return (unsigned long)g_osver.dwPlatformId;
0a753a76
PP
523}
524
7766f137
GS
525DllExport int
526win32_getpid(void)
527{
922b1888 528 int pid;
7766f137 529#ifdef USE_ITHREADS
acfe0abc 530 dTHX;
7766f137
GS
531 if (w32_pseudo_id)
532 return -((int)w32_pseudo_id);
533#endif
922b1888
GS
534 pid = _getpid();
535 /* Windows 9x appears to always reports a pid for threads and processes
536 * that has the high bit set. So we treat the lower 31 bits as the
537 * "real" PID for Perl's purposes. */
538 if (IsWin95() && pid < 0)
539 pid = -pid;
540 return pid;
7766f137
GS
541}
542
ce1da67e
GS
543/* Tokenize a string. Words are null-separated, and the list
544 * ends with a doubled null. Any character (except null and
545 * including backslash) may be escaped by preceding it with a
546 * backslash (the backslash will be stripped).
547 * Returns number of words in result buffer.
548 */
549static long
dff6d3cd 550tokenize(const char *str, char **dest, char ***destv)
ce1da67e
GS
551{
552 char *retstart = Nullch;
553 char **retvstart = 0;
554 int items = -1;
555 if (str) {
acfe0abc 556 dTHX;
ce1da67e
GS
557 int slen = strlen(str);
558 register char *ret;
559 register char **retv;
a02a5408
JC
560 Newx(ret, slen+2, char);
561 Newx(retv, (slen+3)/2, char*);
ce1da67e
GS
562
563 retstart = ret;
564 retvstart = retv;
565 *retv = ret;
566 items = 0;
567 while (*str) {
568 *ret = *str++;
569 if (*ret == '\\' && *str)
570 *ret = *str++;
571 else if (*ret == ' ') {
572 while (*str == ' ')
573 str++;
574 if (ret == retstart)
575 ret--;
576 else {
577 *ret = '\0';
578 ++items;
579 if (*str)
580 *++retv = ret+1;
581 }
582 }
583 else if (!*str)
584 ++items;
585 ret++;
586 }
587 retvstart[items] = Nullch;
588 *ret++ = '\0';
589 *ret = '\0';
590 }
591 *dest = retstart;
592 *destv = retvstart;
593 return items;
594}
595
596static void
2d7a9237 597get_shell(void)
0a753a76 598{
acfe0abc 599 dTHX;
ce1da67e 600 if (!w32_perlshell_tokens) {
174c211a
GS
601 /* we don't use COMSPEC here for two reasons:
602 * 1. the same reason perl on UNIX doesn't use SHELL--rampant and
603 * uncontrolled unportability of the ensuing scripts.
604 * 2. PERL5SHELL could be set to a shell that may not be fit for
605 * interactive use (which is what most programs look in COMSPEC
606 * for).
607 */
dff6d3cd 608 const char* defaultshell = (IsWinNT()
11998fdb 609 ? "cmd.exe /x/d/c" : "command.com /c");
2fb9ab56 610 const char *usershell = PerlEnv_getenv("PERL5SHELL");
ce1da67e
GS
611 w32_perlshell_items = tokenize(usershell ? usershell : defaultshell,
612 &w32_perlshell_tokens,
613 &w32_perlshell_vec);
68dc0745 614 }
0a753a76
PP
615}
616
68dc0745 617int
54725af6 618Perl_do_aspawn(pTHX_ SV *really, SV **mark, SV **sp)
0a753a76 619{
68dc0745 620 char **argv;
2d7a9237 621 char *str;
68dc0745 622 int status;
2d7a9237 623 int flag = P_WAIT;
68dc0745 624 int index = 0;
68dc0745 625
2d7a9237
GS
626 if (sp <= mark)
627 return -1;
68dc0745 628
ce1da67e 629 get_shell();
a02a5408 630 Newx(argv, (sp - mark) + w32_perlshell_items + 2, char*);
2d7a9237
GS
631
632 if (SvNIOKp(*(mark+1)) && !SvPOKp(*(mark+1))) {
633 ++mark;
634 flag = SvIVx(*mark);
68dc0745
PP
635 }
636
9404a519 637 while (++mark <= sp) {
bb897dfc 638 if (*mark && (str = SvPV_nolen(*mark)))
2d7a9237
GS
639 argv[index++] = str;
640 else
641 argv[index++] = "";
68dc0745
PP
642 }
643 argv[index++] = 0;
3fadfdf1 644
2d7a9237 645 status = win32_spawnvp(flag,
bb897dfc 646 (const char*)(really ? SvPV_nolen(really) : argv[0]),
2d7a9237
GS
647 (const char* const*)argv);
648
80252599 649 if (status < 0 && (errno == ENOEXEC || errno == ENOENT)) {
2d7a9237 650 /* possible shell-builtin, invoke with shell */
ce1da67e
GS
651 int sh_items;
652 sh_items = w32_perlshell_items;
2d7a9237
GS
653 while (--index >= 0)
654 argv[index+sh_items] = argv[index];
ce1da67e
GS
655 while (--sh_items >= 0)
656 argv[sh_items] = w32_perlshell_vec[sh_items];
3fadfdf1 657
2d7a9237 658 status = win32_spawnvp(flag,
bb897dfc 659 (const char*)(really ? SvPV_nolen(really) : argv[0]),
2d7a9237
GS
660 (const char* const*)argv);
661 }
68dc0745 662
922b1888
GS
663 if (flag == P_NOWAIT) {
664 if (IsWin95())
665 PL_statusvalue = -1; /* >16bits hint for pp_system() */
666 }
667 else {
50892819 668 if (status < 0) {
0453d815 669 if (ckWARN(WARN_EXEC))
f98bc0c6 670 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't spawn \"%s\": %s", argv[0], strerror(errno));
50892819
GS
671 status = 255 * 256;
672 }
673 else
674 status *= 256;
b28d0864 675 PL_statusvalue = status;
5aabfad6 676 }
ce1da67e 677 Safefree(argv);
50892819 678 return (status);
68dc0745
PP
679}
680
dd7038b3
JH
681/* returns pointer to the next unquoted space or the end of the string */
682static char*
683find_next_space(const char *s)
684{
685 bool in_quotes = FALSE;
686 while (*s) {
687 /* ignore doubled backslashes, or backslash+quote */
688 if (*s == '\\' && (s[1] == '\\' || s[1] == '"')) {
689 s += 2;
690 }
691 /* keep track of when we're within quotes */
692 else if (*s == '"') {
693 s++;
694 in_quotes = !in_quotes;
695 }
696 /* break it up only at spaces that aren't in quotes */
697 else if (!in_quotes && isSPACE(*s))
698 return (char*)s;
699 else
700 s++;
701 }
702 return (char*)s;
703}
704
54725af6 705static int
08039b81 706do_spawn2(pTHX_ const char *cmd, int exectype)
68dc0745
PP
707{
708 char **a;
709 char *s;
710 char **argv;
711 int status = -1;
712 BOOL needToTry = TRUE;
2d7a9237 713 char *cmd2;
68dc0745 714
2d7a9237
GS
715 /* Save an extra exec if possible. See if there are shell
716 * metacharacters in it */
e200fe59 717 if (!has_shell_metachars(cmd)) {
a02a5408
JC
718 Newx(argv, strlen(cmd) / 2 + 2, char*);
719 Newx(cmd2, strlen(cmd) + 1, char);
68dc0745
PP
720 strcpy(cmd2, cmd);
721 a = argv;
722 for (s = cmd2; *s;) {
de030af3 723 while (*s && isSPACE(*s))
68dc0745
PP
724 s++;
725 if (*s)
726 *(a++) = s;
dd7038b3 727 s = find_next_space(s);
9404a519 728 if (*s)
68dc0745 729 *s++ = '\0';
0a753a76 730 }
68dc0745 731 *a = Nullch;
ce1da67e 732 if (argv[0]) {
6890e559
GS
733 switch (exectype) {
734 case EXECF_SPAWN:
735 status = win32_spawnvp(P_WAIT, argv[0],
736 (const char* const*)argv);
737 break;
738 case EXECF_SPAWN_NOWAIT:
739 status = win32_spawnvp(P_NOWAIT, argv[0],
740 (const char* const*)argv);
741 break;
742 case EXECF_EXEC:
743 status = win32_execvp(argv[0], (const char* const*)argv);
744 break;
745 }
2d7a9237 746 if (status != -1 || errno == 0)
68dc0745 747 needToTry = FALSE;
0a753a76 748 }
0a753a76 749 Safefree(argv);
68dc0745
PP
750 Safefree(cmd2);
751 }
2d7a9237 752 if (needToTry) {
ce1da67e
GS
753 char **argv;
754 int i = -1;
755 get_shell();
a02a5408 756 Newx(argv, w32_perlshell_items + 2, char*);
ce1da67e
GS
757 while (++i < w32_perlshell_items)
758 argv[i] = w32_perlshell_vec[i];
08039b81 759 argv[i++] = (char *)cmd;
2d7a9237 760 argv[i] = Nullch;
6890e559
GS
761 switch (exectype) {
762 case EXECF_SPAWN:
763 status = win32_spawnvp(P_WAIT, argv[0],
764 (const char* const*)argv);
765 break;
766 case EXECF_SPAWN_NOWAIT:
767 status = win32_spawnvp(P_NOWAIT, argv[0],
768 (const char* const*)argv);
769 break;
770 case EXECF_EXEC:
771 status = win32_execvp(argv[0], (const char* const*)argv);
772 break;
773 }
ce1da67e
GS
774 cmd = argv[0];
775 Safefree(argv);
68dc0745 776 }
922b1888
GS
777 if (exectype == EXECF_SPAWN_NOWAIT) {
778 if (IsWin95())
779 PL_statusvalue = -1; /* >16bits hint for pp_system() */
780 }
781 else {
50892819 782 if (status < 0) {
0453d815 783 if (ckWARN(WARN_EXEC))
f98bc0c6 784 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't %s \"%s\": %s",
50892819
GS
785 (exectype == EXECF_EXEC ? "exec" : "spawn"),
786 cmd, strerror(errno));
787 status = 255 * 256;
788 }
789 else
790 status *= 256;
b28d0864 791 PL_statusvalue = status;
5aabfad6 792 }
50892819 793 return (status);
0a753a76
PP
794}
795
6890e559 796int
54725af6 797Perl_do_spawn(pTHX_ char *cmd)
6890e559 798{
54725af6 799 return do_spawn2(aTHX_ cmd, EXECF_SPAWN);
6890e559
GS
800}
801
2d7a9237 802int
54725af6 803Perl_do_spawn_nowait(pTHX_ char *cmd)
2d7a9237 804{
54725af6 805 return do_spawn2(aTHX_ cmd, EXECF_SPAWN_NOWAIT);
2d7a9237
GS
806}
807
6890e559 808bool
79d39d80 809Perl_do_exec(pTHX_ const char *cmd)
6890e559 810{
08039b81 811 do_spawn2(aTHX_ cmd, EXECF_EXEC);
6890e559
GS
812 return FALSE;
813}
814
68dc0745
PP
815/* The idea here is to read all the directory names into a string table
816 * (separated by nulls) and when one of the other dir functions is called
817 * return the pointer to the current file name.
818 */
c5be433b 819DllExport DIR *
0e06f75d 820win32_opendir(const char *filename)
0a753a76 821{
acfe0abc 822 dTHX;
95136add 823 DIR *dirp;
9404a519
GS
824 long len;
825 long idx;
826 char scanname[MAX_PATH+3];
c623ac67 827 Stat_t sbuf;
7fac1903 828 WIN32_FIND_DATAA aFindData;
35cf1ab6
JD
829 WIN32_FIND_DATAW wFindData;
830 bool using_wide;
831 char buffer[MAX_PATH*2];
832 char *ptr;
9404a519
GS
833
834 len = strlen(filename);
835 if (len > MAX_PATH)
836 return NULL;
68dc0745
PP
837
838 /* check to see if filename is a directory */
69d3ab13 839 if (win32_stat(filename, &sbuf) < 0 || !S_ISDIR(sbuf.st_mode))
24caa93f 840 return NULL;
68dc0745 841
68dc0745 842 /* Get us a DIR structure */
a02a5408 843 Newxz(dirp, 1, DIR);
68dc0745
PP
844
845 /* Create the search pattern */
846 strcpy(scanname, filename);
23db2e2d
GS
847
848 /* bare drive name means look in cwd for drive */
849 if (len == 2 && isALPHA(scanname[0]) && scanname[1] == ':') {
850 scanname[len++] = '.';
851 scanname[len++] = '/';
852 }
853 else if (scanname[len-1] != '/' && scanname[len-1] != '\\') {
9404a519 854 scanname[len++] = '/';
23db2e2d 855 }
9404a519
GS
856 scanname[len++] = '*';
857 scanname[len] = '\0';
68dc0745
PP
858
859 /* do the FindFirstFile call */
3839a0fa 860 if (IsWin2000()) {
35cf1ab6
JD
861 WCHAR wscanname[sizeof(scanname)];
862 MultiByteToWideChar(CP_ACP, 0, scanname, -1, wscanname, sizeof(wscanname)/sizeof(WCHAR));
863 dirp->handle = FindFirstFileW(PerlDir_mapW(wscanname), &wFindData);
864 using_wide = TRUE;
865 }
866 else {
867 dirp->handle = FindFirstFileA(PerlDir_mapA(scanname), &aFindData);
868 }
8c56068e 869 if (dirp->handle == INVALID_HANDLE_VALUE) {
95136add 870 DWORD err = GetLastError();
21e72512 871 /* FindFirstFile() fails on empty drives! */
95136add
GS
872 switch (err) {
873 case ERROR_FILE_NOT_FOUND:
874 return dirp;
875 case ERROR_NO_MORE_FILES:
876 case ERROR_PATH_NOT_FOUND:
877 errno = ENOENT;
878 break;
879 case ERROR_NOT_ENOUGH_MEMORY:
880 errno = ENOMEM;
881 break;
882 default:
883 errno = EINVAL;
884 break;
885 }
886 Safefree(dirp);
68dc0745
PP
887 return NULL;
888 }
889
35cf1ab6
JD
890 if (using_wide) {
891 BOOL use_default = FALSE;
892 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
893 wFindData.cFileName, -1,
894 buffer, sizeof(buffer), NULL, &use_default);
895 if (use_default && *wFindData.cAlternateFileName) {
896 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
897 wFindData.cAlternateFileName, -1,
898 buffer, sizeof(buffer), NULL, NULL);
899 }
900 ptr = buffer;
901 }
902 else {
903 ptr = aFindData.cFileName;
904 }
68dc0745
PP
905 /* now allocate the first part of the string table for
906 * the filenames that we find.
907 */
35cf1ab6 908 idx = strlen(ptr)+1;
95136add 909 if (idx < 256)
35cf1ab6 910 dirp->size = 256;
95136add
GS
911 else
912 dirp->size = idx;
a02a5408 913 Newx(dirp->start, dirp->size, char);
35cf1ab6 914 strcpy(dirp->start, ptr);
95136add
GS
915 dirp->nfiles++;
916 dirp->end = dirp->curr = dirp->start;
917 dirp->end += idx;
918 return dirp;
0a753a76
PP
919}
920
921
68dc0745
PP
922/* Readdir just returns the current string pointer and bumps the
923 * string pointer to the nDllExport entry.
924 */
c5be433b 925DllExport struct direct *
ce2e26e5 926win32_readdir(DIR *dirp)
0a753a76 927{
95136add 928 long len;
0a753a76 929
68dc0745
PP
930 if (dirp->curr) {
931 /* first set up the structure to return */
932 len = strlen(dirp->curr);
0f38926b 933 strcpy(dirp->dirstr.d_name, dirp->curr);
68dc0745 934 dirp->dirstr.d_namlen = len;
0a753a76 935
68dc0745 936 /* Fake an inode */
0f38926b 937 dirp->dirstr.d_ino = dirp->curr - dirp->start;
0a753a76 938
95136add 939 /* Now set up for the next call to readdir */
68dc0745 940 dirp->curr += len + 1;
95136add 941 if (dirp->curr >= dirp->end) {
acfe0abc 942 dTHX;
35cf1ab6
JD
943 BOOL res;
944 WIN32_FIND_DATAA aFindData;
945 char buffer[MAX_PATH*2];
946 char *ptr;
95136add
GS
947
948 /* finding the next file that matches the wildcard
949 * (which should be all of them in this directory!).
95136add 950 */
3839a0fa 951 if (IsWin2000()) {
35cf1ab6
JD
952 WIN32_FIND_DATAW wFindData;
953 res = FindNextFileW(dirp->handle, &wFindData);
954 if (res) {
955 BOOL use_default = FALSE;
956 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
957 wFindData.cFileName, -1,
958 buffer, sizeof(buffer), NULL, &use_default);
959 if (use_default && *wFindData.cAlternateFileName) {
960 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
961 wFindData.cAlternateFileName, -1,
962 buffer, sizeof(buffer), NULL, NULL);
963 }
964 ptr = buffer;
965 }
966 }
967 else {
968 res = FindNextFileA(dirp->handle, &aFindData);
969 ptr = aFindData.cFileName;
970 }
95136add 971 if (res) {
0f38926b 972 long endpos = dirp->end - dirp->start;
35cf1ab6 973 long newsize = endpos + strlen(ptr) + 1;
95136add 974 /* bump the string table size by enough for the
022735b4 975 * new name and its null terminator */
0f38926b
GS
976 while (newsize > dirp->size) {
977 long curpos = dirp->curr - dirp->start;
95136add
GS
978 dirp->size *= 2;
979 Renew(dirp->start, dirp->size, char);
0f38926b 980 dirp->curr = dirp->start + curpos;
95136add 981 }
35cf1ab6 982 strcpy(dirp->start + endpos, ptr);
0f38926b 983 dirp->end = dirp->start + newsize;
95136add
GS
984 dirp->nfiles++;
985 }
986 else
987 dirp->curr = NULL;
68dc0745 988 }
68dc0745 989 return &(dirp->dirstr);
3fadfdf1 990 }
68dc0745
PP
991 else
992 return NULL;
0a753a76
PP
993}
994
68dc0745 995/* Telldir returns the current string pointer position */
c5be433b 996DllExport long
ce2e26e5 997win32_telldir(DIR *dirp)
0a753a76 998{
95136add 999 return (dirp->curr - dirp->start);
0a753a76
PP
1000}
1001
1002
68dc0745 1003/* Seekdir moves the string pointer to a previously saved position
95136add 1004 * (returned by telldir).
68dc0745 1005 */
c5be433b 1006DllExport void
ce2e26e5 1007win32_seekdir(DIR *dirp, long loc)
0a753a76 1008{
95136add 1009 dirp->curr = dirp->start + loc;
0a753a76
PP
1010}
1011
68dc0745 1012/* Rewinddir resets the string pointer to the start */
c5be433b 1013DllExport void
ce2e26e5 1014win32_rewinddir(DIR *dirp)
0a753a76
PP
1015{
1016 dirp->curr = dirp->start;
1017}
1018
68dc0745 1019/* free the memory allocated by opendir */
c5be433b 1020DllExport int
ce2e26e5 1021win32_closedir(DIR *dirp)
0a753a76 1022{
acfe0abc 1023 dTHX;
95136add 1024 if (dirp->handle != INVALID_HANDLE_VALUE)
0f38926b 1025 FindClose(dirp->handle);
0a753a76
PP
1026 Safefree(dirp->start);
1027 Safefree(dirp);
68dc0745 1028 return 1;
0a753a76
PP
1029}
1030
1031
68dc0745
PP
1032/*
1033 * various stubs
1034 */
0a753a76
PP
1035
1036
68dc0745
PP
1037/* Ownership
1038 *
1039 * Just pretend that everyone is a superuser. NT will let us know if
1040 * we don\'t really have permission to do something.
1041 */
0a753a76
PP
1042
1043#define ROOT_UID ((uid_t)0)
1044#define ROOT_GID ((gid_t)0)
1045
68dc0745
PP
1046uid_t
1047getuid(void)
0a753a76 1048{
68dc0745 1049 return ROOT_UID;
0a753a76
PP
1050}
1051
68dc0745
PP
1052uid_t
1053geteuid(void)
0a753a76 1054{
68dc0745 1055 return ROOT_UID;
0a753a76
PP
1056}
1057
68dc0745
PP
1058gid_t
1059getgid(void)
0a753a76 1060{
68dc0745 1061 return ROOT_GID;
0a753a76
PP
1062}
1063
68dc0745
PP
1064gid_t
1065getegid(void)
0a753a76 1066{
68dc0745 1067 return ROOT_GID;
0a753a76
PP
1068}
1069
68dc0745 1070int
22239a37 1071setuid(uid_t auid)
3fadfdf1 1072{
22239a37 1073 return (auid == ROOT_UID ? 0 : -1);
0a753a76
PP
1074}
1075
68dc0745 1076int
22239a37 1077setgid(gid_t agid)
0a753a76 1078{
22239a37 1079 return (agid == ROOT_GID ? 0 : -1);
0a753a76
PP
1080}
1081
e34ffe5a
GS
1082char *
1083getlogin(void)
1084{
acfe0abc 1085 dTHX;
3352bfcb
GS
1086 char *buf = w32_getlogin_buffer;
1087 DWORD size = sizeof(w32_getlogin_buffer);
e34ffe5a
GS
1088 if (GetUserName(buf,&size))
1089 return buf;
1090 return (char*)NULL;
1091}
1092
b990f8c8
GS
1093int
1094chown(const char *path, uid_t owner, gid_t group)
1095{
1096 /* XXX noop */
1c1c7f20 1097 return 0;
b990f8c8
GS
1098}
1099
00b02797
JH
1100/*
1101 * XXX this needs strengthening (for PerlIO)
1102 * -- BKS, 11-11-200
1103*/
1104int mkstemp(const char *path)
1105{
1106 dTHX;
1107 char buf[MAX_PATH+1];
1108 int i = 0, fd = -1;
1109
1110retry:
1111 if (i++ > 10) { /* give up */
1112 errno = ENOENT;
1113 return -1;
1114 }
1115 if (!GetTempFileNameA((LPCSTR)path, "plr", 1, buf)) {
1116 errno = ENOENT;
1117 return -1;
1118 }
1119 fd = PerlLIO_open3(buf, O_CREAT|O_RDWR|O_EXCL, 0600);
1120 if (fd == -1)
1121 goto retry;
1122 return fd;
1123}
1124
0aaad0ff
GS
1125static long
1126find_pid(int pid)
0a753a76 1127{
acfe0abc 1128 dTHX;
7766f137
GS
1129 long child = w32_num_children;
1130 while (--child >= 0) {
eb160463 1131 if ((int)w32_child_pids[child] == pid)
0aaad0ff
GS
1132 return child;
1133 }
1134 return -1;
1135}
1136
1137static void
1138remove_dead_process(long child)
1139{
1140 if (child >= 0) {
acfe0abc 1141 dTHX;
0aaad0ff 1142 CloseHandle(w32_child_handles[child]);
c00206c8 1143 Move(&w32_child_handles[child+1], &w32_child_handles[child],
0aaad0ff 1144 (w32_num_children-child-1), HANDLE);
c00206c8 1145 Move(&w32_child_pids[child+1], &w32_child_pids[child],
0aaad0ff
GS
1146 (w32_num_children-child-1), DWORD);
1147 w32_num_children--;
f55ee38a 1148 }
f55ee38a
GS
1149}
1150
7766f137
GS
1151#ifdef USE_ITHREADS
1152static long
1153find_pseudo_pid(int pid)
1154{
acfe0abc 1155 dTHX;
7766f137
GS
1156 long child = w32_num_pseudo_children;
1157 while (--child >= 0) {
eb160463 1158 if ((int)w32_pseudo_child_pids[child] == pid)
7766f137
GS
1159 return child;
1160 }
1161 return -1;
1162}
1163
1164static void
1165remove_dead_pseudo_process(long child)
1166{
1167 if (child >= 0) {
acfe0abc 1168 dTHX;
7766f137 1169 CloseHandle(w32_pseudo_child_handles[child]);
c00206c8 1170 Move(&w32_pseudo_child_handles[child+1], &w32_pseudo_child_handles[child],
7766f137 1171 (w32_num_pseudo_children-child-1), HANDLE);
c00206c8 1172 Move(&w32_pseudo_child_pids[child+1], &w32_pseudo_child_pids[child],
7766f137 1173 (w32_num_pseudo_children-child-1), DWORD);
aeecf691
JD
1174 Move(&w32_pseudo_child_message_hwnds[child+1], &w32_pseudo_child_message_hwnds[child],
1175 (w32_num_pseudo_children-child-1), HWND);
7766f137
GS
1176 w32_num_pseudo_children--;
1177 }
1178}
1179#endif
1180
542cb85f
JD
1181static int
1182terminate_process(DWORD pid, HANDLE process_handle, int sig)
1183{
1184 switch(sig) {
1185 case 0:
1186 /* "Does process exist?" use of kill */
1187 return 1;
1188 case 2:
1189 if (GenerateConsoleCtrlEvent(CTRL_C_EVENT, pid))
1190 return 1;
1191 break;
1192 case SIGBREAK:
1193 case SIGTERM:
1194 if (GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, pid))
1195 return 1;
1196 break;
1197 default: /* For now be backwards compatible with perl 5.6 */
1198 case 9:
1199 /* Note that we will only be able to kill processes owned by the
1200 * current process owner, even when we are running as an administrator.
1201 * To kill processes of other owners we would need to set the
1202 * 'SeDebugPrivilege' privilege before obtaining the process handle.
1203 */
1204 if (TerminateProcess(process_handle, sig))
1205 return 1;
1206 break;
1207 }
1208 return 0;
1209}
1210
1211/* Traverse process tree using ToolHelp functions */
1212static int
1213kill_process_tree_toolhelp(DWORD pid, int sig)
1214{
1215 HANDLE process_handle;
1216 HANDLE snapshot_handle;
1217 int killed = 0;
1218
1219 process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
6a4d57af 1220 if (process_handle == NULL)
542cb85f
JD
1221 return 0;
1222
1223 killed += terminate_process(pid, process_handle, sig);
1224
1225 snapshot_handle = pfnCreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
1226 if (snapshot_handle != INVALID_HANDLE_VALUE) {
1227 PROCESSENTRY32 entry;
1228
1229 entry.dwSize = sizeof(entry);
1230 if (pfnProcess32First(snapshot_handle, &entry)) {
1231 do {
1232 if (entry.th32ParentProcessID == pid)
1233 killed += kill_process_tree_toolhelp(entry.th32ProcessID, sig);
1234 entry.dwSize = sizeof(entry);
1235 }
1236 while (pfnProcess32Next(snapshot_handle, &entry));
1237 }
1238 CloseHandle(snapshot_handle);
1239 }
1240 CloseHandle(process_handle);
1241 return killed;
1242}
1243
1244/* Traverse process tree using undocumented system information structures.
1245 * This is only necessary on Windows NT, which lacks the ToolHelp functions.
1246 */
1247static int
1248kill_process_tree_sysinfo(SYSTEM_PROCESSES *process_info, DWORD pid, int sig)
1249{
1250 HANDLE process_handle;
1251 SYSTEM_PROCESSES *p = process_info;
1252 int killed = 0;
1253
1254 process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
6a4d57af 1255 if (process_handle == NULL)
542cb85f
JD
1256 return 0;
1257
1258 killed += terminate_process(pid, process_handle, sig);
1259
1260 while (1) {
1261 if (p->InheritedFromProcessId == (DWORD)pid)
1262 killed += kill_process_tree_sysinfo(process_info, p->ProcessId, sig);
1263
1264 if (p->NextEntryDelta == 0)
1265 break;
1266
1267 p = (SYSTEM_PROCESSES*)((char*)p + p->NextEntryDelta);
1268 }
1269
1270 CloseHandle(process_handle);
1271 return killed;
1272}
1273
1274int
1275killpg(int pid, int sig)
1276{
1277 /* Use "documented" method whenever available */
1278 if (pfnCreateToolhelp32Snapshot && pfnProcess32First && pfnProcess32Next) {
1279 return kill_process_tree_toolhelp((DWORD)pid, sig);
1280 }
1281
1282 /* Fall back to undocumented Windows internals on Windows NT */
1283 if (pfnZwQuerySystemInformation) {
1284 dTHX;
1285 char *buffer;
1286 DWORD size = 0;
1287
1288 pfnZwQuerySystemInformation(SystemProcessesAndThreadsInformation, NULL, 0, &size);
1289 Newx(buffer, size, char);
1290
1291 if (pfnZwQuerySystemInformation(SystemProcessesAndThreadsInformation, buffer, size, NULL) >= 0) {
1292 int killed = kill_process_tree_sysinfo((SYSTEM_PROCESSES*)buffer, (DWORD)pid, sig);
1293 Safefree(buffer);
1294 return killed;
1295 }
1296 }
1297 return 0;
1298}
1299
1300static int
1301my_kill(int pid, int sig)
1302{
1303 int retval = 0;
1304 HANDLE process_handle;
1305
1306 if (sig < 0)
1307 return killpg(pid, -sig);
1308
1309 process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
6a4d57af
JD
1310 /* OpenProcess() returns NULL on error, *not* INVALID_HANDLE_VALUE */
1311 if (process_handle != NULL) {
542cb85f
JD
1312 retval = terminate_process(pid, process_handle, sig);
1313 CloseHandle(process_handle);
1314 }
1315 return retval;
1316}
1317
f55ee38a
GS
1318DllExport int
1319win32_kill(int pid, int sig)
1320{
acfe0abc 1321 dTHX;
c66b022d 1322 long child;
7766f137
GS
1323#ifdef USE_ITHREADS
1324 if (pid < 0) {
1325 /* it is a pseudo-forked child */
c66b022d 1326 child = find_pseudo_pid(-pid);
7766f137 1327 if (child >= 0) {
aeecf691 1328 HWND hwnd = w32_pseudo_child_message_hwnds[child];
85c508c3 1329 HANDLE hProcess = w32_pseudo_child_handles[child];
7e5f34c0
NIS
1330 switch (sig) {
1331 case 0:
c843839f 1332 /* "Does process exist?" use of kill */
7766f137 1333 return 0;
aeecf691 1334
7e5f34c0
NIS
1335 case 9:
1336 /* kill -9 style un-graceful exit */
1337 if (TerminateThread(hProcess, sig)) {
1338 remove_dead_pseudo_process(child);
1339 return 0;
1340 }
1341 break;
aeecf691
JD
1342
1343 default: {
1344 int count = 0;
1345 /* pseudo-process has not yet properly initialized if hwnd isn't set */
1346 while (hwnd == INVALID_HANDLE_VALUE && count < 5) {
1347 /* Yield and wait for the other thread to send us its message_hwnd */
1348 Sleep(0);
1349 win32_async_check(aTHX);
5e162c31 1350 hwnd = w32_pseudo_child_message_hwnds[child];
aeecf691
JD
1351 ++count;
1352 }
1353 if (hwnd != INVALID_HANDLE_VALUE) {
1354 /* We fake signals to pseudo-processes using Win32
1355 * message queue. In Win9X the pids are negative already. */
1356 if ((hwnd != NULL && PostMessage(hwnd, WM_USER_KILL, sig, 0)) ||
1357 PostThreadMessage(IsWin95() ? pid : -pid, WM_USER_KILL, sig, 0))
1358 {
1359 /* It might be us ... */
1360 PERL_ASYNC_CHECK();
1361 return 0;
1362 }
1363 }
7e5f34c0
NIS
1364 break;
1365 }
aeecf691 1366 } /* switch */
7766f137 1367 }
922b1888
GS
1368 else if (IsWin95()) {
1369 pid = -pid;
1370 goto alien_process;
1371 }
68dc0745 1372 }
7766f137
GS
1373 else
1374#endif
1375 {
c66b022d 1376 child = find_pid(pid);
7766f137 1377 if (child >= 0) {
542cb85f
JD
1378 if (my_kill(pid, sig)) {
1379 DWORD exitcode = 0;
1380 if (GetExitCodeProcess(w32_child_handles[child], &exitcode) &&
1381 exitcode != STILL_ACTIVE)
1382 {
1383 remove_dead_process(child);
1384 }
1385 return 0;
7e5f34c0 1386 }
7766f137
GS
1387 }
1388 else {
922b1888 1389alien_process:
542cb85f 1390 if (my_kill((IsWin95() ? -pid : pid), sig))
48db714f 1391 return 0;
7766f137
GS
1392 }
1393 }
1394 errno = EINVAL;
1395 return -1;
0a753a76 1396}
fbbbcc48 1397
68dc0745 1398DllExport int
c623ac67 1399win32_stat(const char *path, Stat_t *sbuf)
0a753a76 1400{
acfe0abc 1401 dTHX;
3fadfdf1 1402 char buffer[MAX_PATH+1];
68dc0745 1403 int l = strlen(path);
67fbe06e 1404 int res;
6b980173 1405 int nlink = 1;
44221b20 1406 BOOL expect_dir = FALSE;
0a753a76 1407
cba61fe1
JD
1408 GV *gv_sloppy = gv_fetchpvs("\027IN32_SLOPPY_STAT",
1409 GV_NOTQUAL, SVt_PV);
1410 BOOL sloppy = gv_sloppy && SvTRUE(GvSV(gv_sloppy));
1411
68dc0745
PP
1412 if (l > 1) {
1413 switch(path[l - 1]) {
e1dbac94 1414 /* FindFirstFile() and stat() are buggy with a trailing
44221b20 1415 * slashes, except for the root directory of a drive */
68dc0745 1416 case '\\':
44221b20
JD
1417 case '/':
1418 if (l > sizeof(buffer)) {
0b96339f
JD
1419 errno = ENAMETOOLONG;
1420 return -1;
1421 }
44221b20
JD
1422 --l;
1423 strncpy(buffer, path, l);
1424 /* remove additional trailing slashes */
1425 while (l > 1 && (buffer[l-1] == '/' || buffer[l-1] == '\\'))
1426 --l;
1427 /* add back slash if we otherwise end up with just a drive letter */
1428 if (l == 2 && isALPHA(buffer[0]) && buffer[1] == ':')
1429 buffer[l++] = '\\';
1430 buffer[l] = '\0';
1431 path = buffer;
1432 expect_dir = TRUE;
e1dbac94 1433 break;
44221b20 1434
23db2e2d 1435 /* FindFirstFile() is buggy with "x:", so add a dot :-( */
e1dbac94
GS
1436 case ':':
1437 if (l == 2 && isALPHA(path[0])) {
426c1a18
GS
1438 buffer[0] = path[0];
1439 buffer[1] = ':';
1440 buffer[2] = '.';
1441 buffer[3] = '\0';
e1dbac94 1442 l = 3;
426c1a18 1443 path = buffer;
e1dbac94
GS
1444 }
1445 break;
68dc0745
PP
1446 }
1447 }
6b980173 1448
8c56068e
JD
1449 path = PerlDir_mapA(path);
1450 l = strlen(path);
cba61fe1
JD
1451
1452 if (!sloppy) {
1453 /* We must open & close the file once; otherwise file attribute changes */
1454 /* might not yet have propagated to "other" hard links of the same file. */
1455 /* This also gives us an opportunity to determine the number of links. */
1456 HANDLE handle = CreateFileA(path, 0, 0, NULL, OPEN_EXISTING, 0, NULL);
1457 if (handle != INVALID_HANDLE_VALUE) {
1458 BY_HANDLE_FILE_INFORMATION bhi;
1459 if (GetFileInformationByHandle(handle, &bhi))
1460 nlink = bhi.nNumberOfLinks;
1461 CloseHandle(handle);
1462 }
7fac1903 1463 }
6b980173 1464
8c56068e 1465 /* path will be mapped correctly above */
c623ac67 1466#if defined(WIN64) || defined(USE_LARGE_FILES)
8c56068e 1467 res = _stati64(path, sbuf);
c623ac67 1468#else
8c56068e 1469 res = stat(path, sbuf);
c623ac67 1470#endif
426c1a18 1471 sbuf->st_nlink = nlink;
6b980173 1472
24caa93f
GS
1473 if (res < 0) {
1474 /* CRT is buggy on sharenames, so make sure it really isn't.
1475 * XXX using GetFileAttributesEx() will enable us to set
426c1a18 1476 * sbuf->st_*time (but note that's not available on the
24caa93f 1477 * Windows of 1995) */
8c56068e 1478 DWORD r = GetFileAttributesA(path);
24caa93f 1479 if (r != 0xffffffff && (r & FILE_ATTRIBUTE_DIRECTORY)) {
426c1a18 1480 /* sbuf may still contain old garbage since stat() failed */
c623ac67 1481 Zero(sbuf, 1, Stat_t);
426c1a18 1482 sbuf->st_mode = S_IFDIR | S_IREAD;
24caa93f
GS
1483 errno = 0;
1484 if (!(r & FILE_ATTRIBUTE_READONLY))
426c1a18 1485 sbuf->st_mode |= S_IWRITE | S_IEXEC;
24caa93f
GS
1486 return 0;
1487 }
1488 }
24caa93f 1489 else {
e1dbac94
GS
1490 if (l == 3 && isALPHA(path[0]) && path[1] == ':'
1491 && (path[2] == '\\' || path[2] == '/'))
2293b0e9
AB
1492 {
1493 /* The drive can be inaccessible, some _stat()s are buggy */
8c56068e 1494 if (!GetVolumeInformationA(path,NULL,0,NULL,NULL,NULL,NULL,0)) {
2293b0e9
AB
1495 errno = ENOENT;
1496 return -1;
1497 }
1498 }
44221b20
JD
1499 if (expect_dir && !S_ISDIR(sbuf->st_mode)) {
1500 errno = ENOTDIR;
1501 return -1;
1502 }
2293b0e9 1503#ifdef __BORLANDC__
426c1a18
GS
1504 if (S_ISDIR(sbuf->st_mode))
1505 sbuf->st_mode |= S_IWRITE | S_IEXEC;
1506 else if (S_ISREG(sbuf->st_mode)) {
d0650a05 1507 int perms;
67fbe06e
GS
1508 if (l >= 4 && path[l-4] == '.') {
1509 const char *e = path + l - 3;
1510 if (strnicmp(e,"exe",3)
1511 && strnicmp(e,"bat",3)
1512 && strnicmp(e,"com",3)
1513 && (IsWin95() || strnicmp(e,"cmd",3)))
426c1a18 1514 sbuf->st_mode &= ~S_IEXEC;
67fbe06e 1515 else
426c1a18 1516 sbuf->st_mode |= S_IEXEC;
67fbe06e
GS
1517 }
1518 else
426c1a18 1519 sbuf->st_mode &= ~S_IEXEC;
d0650a05
GS
1520 /* Propagate permissions to _group_ and _others_ */
1521 perms = sbuf->st_mode & (S_IREAD|S_IWRITE|S_IEXEC);
1522 sbuf->st_mode |= (perms>>3) | (perms>>6);
67fbe06e 1523 }
67fbe06e 1524#endif
2293b0e9 1525 }
67fbe06e 1526 return res;
0a753a76
PP
1527}
1528
bb27e7b6
JH
1529#define isSLASH(c) ((c) == '/' || (c) == '\\')
1530#define SKIP_SLASHES(s) \
1531 STMT_START { \
1532 while (*(s) && isSLASH(*(s))) \
1533 ++(s); \
1534 } STMT_END
1535#define COPY_NONSLASHES(d,s) \
1536 STMT_START { \
1537 while (*(s) && !isSLASH(*(s))) \
1538 *(d)++ = *(s)++; \
1539 } STMT_END
1540
8ac9c18d
GS
1541/* Find the longname of a given path. path is destructively modified.
1542 * It should have space for at least MAX_PATH characters. */
1543DllExport char *
1544win32_longpath(char *path)
1545{
1546 WIN32_FIND_DATA fdata;
1547 HANDLE fhand;
1548 char tmpbuf[MAX_PATH+1];
1549 char *tmpstart = tmpbuf;
1550 char *start = path;
1551 char sep;
1552 if (!path)
1553 return Nullch;
1554
1555 /* drive prefix */
bb27e7b6 1556 if (isALPHA(path[0]) && path[1] == ':') {
8ac9c18d
GS
1557 start = path + 2;
1558 *tmpstart++ = path[0];
1559 *tmpstart++ = ':';
1560 }
1561 /* UNC prefix */
bb27e7b6 1562 else if (isSLASH(path[0]) && isSLASH(path[1])) {
8ac9c18d 1563 start = path + 2;
52fcf7ee
GS
1564 *tmpstart++ = path[0];
1565 *tmpstart++ = path[1];
bb27e7b6
JH
1566 SKIP_SLASHES(start);
1567 COPY_NONSLASHES(tmpstart,start); /* copy machine name */
8ac9c18d 1568 if (*start) {
bb27e7b6
JH
1569 *tmpstart++ = *start++;
1570 SKIP_SLASHES(start);
1571 COPY_NONSLASHES(tmpstart,start); /* copy share name */
8ac9c18d
GS
1572 }
1573 }
8ac9c18d 1574 *tmpstart = '\0';
bb27e7b6
JH
1575 while (*start) {
1576 /* copy initial slash, if any */
1577 if (isSLASH(*start)) {
1578 *tmpstart++ = *start++;
1579 *tmpstart = '\0';
1580 SKIP_SLASHES(start);
1581 }
1582
1583 /* FindFirstFile() expands "." and "..", so we need to pass
1584 * those through unmolested */
1585 if (*start == '.'
1586 && (!start[1] || isSLASH(start[1])
1587 || (start[1] == '.' && (!start[2] || isSLASH(start[2])))))
1588 {
1589 COPY_NONSLASHES(tmpstart,start); /* copy "." or ".." */
1590 *tmpstart = '\0';
1591 continue;
1592 }
1593
1594 /* if this is the end, bust outta here */
1595 if (!*start)
1596 break;
8ac9c18d 1597
bb27e7b6
JH
1598 /* now we're at a non-slash; walk up to next slash */
1599 while (*start && !isSLASH(*start))
8ac9c18d 1600 ++start;
8ac9c18d
GS
1601
1602 /* stop and find full name of component */
bb27e7b6 1603 sep = *start;
8ac9c18d
GS
1604 *start = '\0';
1605 fhand = FindFirstFile(path,&fdata);
bb27e7b6 1606 *start = sep;
8ac9c18d 1607 if (fhand != INVALID_HANDLE_VALUE) {
bb27e7b6
JH
1608 STRLEN len = strlen(fdata.cFileName);
1609 if ((STRLEN)(tmpbuf + sizeof(tmpbuf) - tmpstart) > len) {
1610 strcpy(tmpstart, fdata.cFileName);
1611 tmpstart += len;
1612 FindClose(fhand);
1613 }
1614 else {
1615 FindClose(fhand);
1616 errno = ERANGE;
1617 return Nullch;
1618 }
8ac9c18d
GS
1619 }
1620 else {
1621 /* failed a step, just return without side effects */
bf49b057 1622 /*PerlIO_printf(Perl_debug_log, "Failed to find %s\n", path);*/
bb27e7b6 1623 errno = EINVAL;
8ac9c18d
GS
1624 return Nullch;
1625 }
1626 }
1627 strcpy(path,tmpbuf);
1628 return path;
1629}
1630
aa2b96ec
JD
1631static void
1632out_of_memory()
1633{
ae6198af
JD
1634 if (PL_curinterp) {
1635 dTHX;
1636 /* Can't use PerlIO to write as it allocates memory */
1637 PerlLIO_write(PerlIO_fileno(Perl_error_log),
1638 PL_no_mem, strlen(PL_no_mem));
1639 my_exit(1);
1640 }
1641 exit(1);
aa2b96ec
JD
1642}
1643
1644/* The win32_ansipath() function takes a Unicode filename and converts it
1645 * into the current Windows codepage. If some characters cannot be mapped,
1646 * then it will convert the short name instead.
1647 *
1648 * The buffer to the ansi pathname must be freed with win32_free() when it
1649 * it no longer needed.
1650 *
1651 * The argument to win32_ansipath() must exist before this function is
1652 * called; otherwise there is no way to determine the short path name.
1653 *
1654 * Ideas for future refinement:
1655 * - Only convert those segments of the path that are not in the current
1656 * codepage, but leave the other segments in their long form.
1657 * - If the resulting name is longer than MAX_PATH, start converting
1658 * additional path segments into short names until the full name
1659 * is shorter than MAX_PATH. Shorten the filename part last!
1660 */
1661DllExport char *
1662win32_ansipath(const WCHAR *widename)
1663{
1664 char *name;
1665 BOOL use_default = FALSE;
1666 size_t widelen = wcslen(widename)+1;
1667 int len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, widename, widelen,
1668 NULL, 0, NULL, NULL);
1669 name = win32_malloc(len);
1670 if (!name)
1671 out_of_memory();
1672
1673 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, widename, widelen,
1674 name, len, NULL, &use_default);
1675 if (use_default) {
aa2b96ec 1676 DWORD shortlen = GetShortPathNameW(widename, NULL, 0);
ae6198af
JD
1677 if (shortlen) {
1678 WCHAR *shortname = win32_malloc(shortlen*sizeof(WCHAR));
1679 if (!shortname)
1680 out_of_memory();
1681 shortlen = GetShortPathNameW(widename, shortname, shortlen)+1;
1682
1683 len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, shortname, shortlen,
1684 NULL, 0, NULL, NULL);
1685 name = win32_realloc(name, len);
1686 if (!name)
1687 out_of_memory();
1688 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, shortname, shortlen,
1689 name, len, NULL, NULL);
1690 win32_free(shortname);
1691 }
aa2b96ec
JD
1692 }
1693 return name;
1694}
1695
0551aaa8
GS
1696DllExport char *
1697win32_getenv(const char *name)
1698{
acfe0abc 1699 dTHX;
0551aaa8 1700 DWORD needlen;
51371543 1701 SV *curitem = Nullsv;
58a50f62 1702
8c56068e 1703 needlen = GetEnvironmentVariableA(name,NULL,0);
58a50f62 1704 if (needlen != 0) {
51371543 1705 curitem = sv_2mortal(newSVpvn("", 0));
8c56068e
JD
1706 do {
1707 SvGROW(curitem, needlen+1);
1708 needlen = GetEnvironmentVariableA(name,SvPVX(curitem),
1709 needlen);
1710 } while (needlen >= SvLEN(curitem));
1711 SvCUR_set(curitem, needlen);
0551aaa8 1712 }
c934e9d4 1713 else {
7a5f8e82 1714 /* allow any environment variables that begin with 'PERL'
c934e9d4 1715 to be stored in the registry */
51371543 1716 if (strncmp(name, "PERL", 4) == 0)
c5be433b 1717 (void)get_regstr(name, &curitem);
c69f6586 1718 }
51371543
GS
1719 if (curitem && SvCUR(curitem))
1720 return SvPVX(curitem);
58a50f62 1721
51371543 1722 return Nullch;
0551aaa8
GS
1723}
1724
ac5c734f
GS
1725DllExport int
1726win32_putenv(const char *name)
1727{
acfe0abc 1728 dTHX;
ac5c734f
GS
1729 char* curitem;
1730 char* val;
b813a9c7 1731 int relval = -1;
51371543 1732
73c4f7a1 1733 if (name) {
8c56068e
JD
1734 Newx(curitem,strlen(name)+1,char);
1735 strcpy(curitem, name);
1736 val = strchr(curitem, '=');
1737 if (val) {
1738 /* The sane way to deal with the environment.
1739 * Has these advantages over putenv() & co.:
1740 * * enables us to store a truly empty value in the
1741 * environment (like in UNIX).
1742 * * we don't have to deal with RTL globals, bugs and leaks.
1743 * * Much faster.
1744 * Why you may want to enable USE_WIN32_RTL_ENV:
1745 * * environ[] and RTL functions will not reflect changes,
1746 * which might be an issue if extensions want to access
1747 * the env. via RTL. This cuts both ways, since RTL will
1748 * not see changes made by extensions that call the Win32
1749 * functions directly, either.
1750 * GSAR 97-06-07
1751 */
1752 *val++ = '\0';
1753 if (SetEnvironmentVariableA(curitem, *val ? val : NULL))
1754 relval = 0;
1755 }
1756 Safefree(curitem);
ac5c734f
GS
1757 }
1758 return relval;
1759}
1760
d55594ae 1761static long
2d7a9237 1762filetime_to_clock(PFILETIME ft)
d55594ae 1763{
7766f137
GS
1764 __int64 qw = ft->dwHighDateTime;
1765 qw <<= 32;
1766 qw |= ft->dwLowDateTime;
1767 qw /= 10000; /* File time ticks at 0.1uS, clock at 1mS */
1768 return (long) qw;
d55594ae
GS
1769}
1770
f3986ebb
GS
1771DllExport int
1772win32_times(struct tms *timebuf)
0a753a76 1773{
d55594ae
GS
1774 FILETIME user;
1775 FILETIME kernel;
1776 FILETIME dummy;
50ee8e5e 1777 clock_t process_time_so_far = clock();
3fadfdf1 1778 if (GetProcessTimes(GetCurrentProcess(), &dummy, &dummy,
d55594ae 1779 &kernel,&user)) {
2d7a9237
GS
1780 timebuf->tms_utime = filetime_to_clock(&user);
1781 timebuf->tms_stime = filetime_to_clock(&kernel);
d55594ae
GS
1782 timebuf->tms_cutime = 0;
1783 timebuf->tms_cstime = 0;
3fadfdf1 1784 } else {
d55594ae 1785 /* That failed - e.g. Win95 fallback to clock() */
50ee8e5e 1786 timebuf->tms_utime = process_time_so_far;
d55594ae
GS
1787 timebuf->tms_stime = 0;
1788 timebuf->tms_cutime = 0;
1789 timebuf->tms_cstime = 0;
1790 }
50ee8e5e 1791 return process_time_so_far;
0a753a76
PP
1792}
1793
9c51cf4c 1794/* fix utime() so it works on directories in NT */
ad0751ec
GS
1795static BOOL
1796filetime_from_time(PFILETIME pFileTime, time_t Time)
1797{
9c51cf4c 1798 struct tm *pTM = localtime(&Time);
ad0751ec 1799 SYSTEMTIME SystemTime;
9c51cf4c 1800 FILETIME LocalTime;
ad0751ec
GS
1801
1802 if (pTM == NULL)
1803 return FALSE;
1804
1805 SystemTime.wYear = pTM->tm_year + 1900;
1806 SystemTime.wMonth = pTM->tm_mon + 1;
1807 SystemTime.wDay = pTM->tm_mday;
1808 SystemTime.wHour = pTM->tm_hour;
1809 SystemTime.wMinute = pTM->tm_min;
1810 SystemTime.wSecond = pTM->tm_sec;
1811 SystemTime.wMilliseconds = 0;
1812
9c51cf4c
GS
1813 return SystemTimeToFileTime(&SystemTime, &LocalTime) &&
1814 LocalFileTimeToFileTime(&LocalTime, pFileTime);
ad0751ec
GS
1815}
1816
1817DllExport int
7766f137
GS
1818win32_unlink(const char *filename)
1819{
acfe0abc 1820 dTHX;
7766f137
GS
1821 int ret;
1822 DWORD attrs;
1823
8c56068e
JD
1824 filename = PerlDir_mapA(filename);
1825 attrs = GetFileAttributesA(filename);
1826 if (attrs == 0xFFFFFFFF) {
1827 errno = ENOENT;
1828 return -1;
7766f137 1829 }
8c56068e
JD
1830 if (attrs & FILE_ATTRIBUTE_READONLY) {
1831 (void)SetFileAttributesA(filename, attrs & ~FILE_ATTRIBUTE_READONLY);
1832 ret = unlink(filename);
1833 if (ret == -1)
1834 (void)SetFileAttributesA(filename, attrs);
7766f137 1835 }
8c56068e
JD
1836 else
1837 ret = unlink(filename);
7766f137
GS
1838 return ret;
1839}
1840
1841DllExport int
3b405fc5 1842win32_utime(const char *filename, struct utimbuf *times)
ad0751ec 1843{
acfe0abc 1844 dTHX;
ad0751ec
GS
1845 HANDLE handle;
1846 FILETIME ftCreate;
1847 FILETIME ftAccess;
1848 FILETIME ftWrite;
1849 struct utimbuf TimeBuffer;
7fac1903 1850 int rc;
8c56068e
JD
1851
1852 filename = PerlDir_mapA(filename);
1853 rc = utime(filename, times);
1854
ad0751ec
GS
1855 /* EACCES: path specifies directory or readonly file */
1856 if (rc == 0 || errno != EACCES /* || !IsWinNT() */)
1857 return rc;
1858
1859 if (times == NULL) {
1860 times = &TimeBuffer;
1861 time(&times->actime);
1862 times->modtime = times->actime;
1863 }
1864
1865 /* This will (and should) still fail on readonly files */
8c56068e
JD
1866 handle = CreateFileA(filename, GENERIC_READ | GENERIC_WRITE,
1867 FILE_SHARE_READ | FILE_SHARE_DELETE, NULL,
1868 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
ad0751ec
GS
1869 if (handle == INVALID_HANDLE_VALUE)
1870 return rc;
1871
1872 if (GetFileTime(handle, &ftCreate, &ftAccess, &ftWrite) &&
1873 filetime_from_time(&ftAccess, times->actime) &&
1874 filetime_from_time(&ftWrite, times->modtime) &&
1875 SetFileTime(handle, &ftCreate, &ftAccess, &ftWrite))
1876 {
1877 rc = 0;
1878 }
1879
1880 CloseHandle(handle);
1881 return rc;
1882}
1883
6e3b076d
JH
1884typedef union {
1885 unsigned __int64 ft_i64;
1886 FILETIME ft_val;
1887} FT_t;
1888
1889#ifdef __GNUC__
1890#define Const64(x) x##LL
1891#else
1892#define Const64(x) x##i64
1893#endif
1894/* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
1895#define EPOCH_BIAS Const64(116444736000000000)
1896
57ab3dfe
GS
1897/* NOTE: This does not compute the timezone info (doing so can be expensive,
1898 * and appears to be unsupported even by glibc) */
1899DllExport int
1900win32_gettimeofday(struct timeval *tp, void *not_used)
1901{
6e3b076d
JH
1902 FT_t ft;
1903
1904 /* this returns time in 100-nanosecond units (i.e. tens of usecs) */
1905 GetSystemTimeAsFileTime(&ft.ft_val);
1906
1907 /* seconds since epoch */
1908 tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / Const64(10000000));
1909
1910 /* microseconds remaining */
1911 tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(1000000));
1912
1913 return 0;
57ab3dfe
GS
1914}
1915
2d7a9237 1916DllExport int
b2af26b1
GS
1917win32_uname(struct utsname *name)
1918{
1919 struct hostent *hep;
1920 STRLEN nodemax = sizeof(name->nodename)-1;
b2af26b1 1921
aeecf691
JD
1922 /* sysname */
1923 switch (g_osver.dwPlatformId) {
1924 case VER_PLATFORM_WIN32_WINDOWS:
1925 strcpy(name->sysname, "Windows");
1926 break;
1927 case VER_PLATFORM_WIN32_NT:
1928 strcpy(name->sysname, "Windows NT");
1929 break;
1930 case VER_PLATFORM_WIN32s:
1931 strcpy(name->sysname, "Win32s");
1932 break;
1933 default:
1934 strcpy(name->sysname, "Win32 Unknown");
1935 break;
b2af26b1 1936 }
aeecf691
JD
1937
1938 /* release */
1939 sprintf(name->release, "%d.%d",
1940 g_osver.dwMajorVersion, g_osver.dwMinorVersion);
1941
1942 /* version */
1943 sprintf(name->version, "Build %d",
1944 g_osver.dwPlatformId == VER_PLATFORM_WIN32_NT
1945 ? g_osver.dwBuildNumber : (g_osver.dwBuildNumber & 0xffff));
1946 if (g_osver.szCSDVersion[0]) {
1947 char *buf = name->version + strlen(name->version);
1948 sprintf(buf, " (%s)", g_osver.szCSDVersion);
b2af26b1
GS
1949 }
1950
1951 /* nodename */
1952 hep = win32_gethostbyname("localhost");
1953 if (hep) {
1954 STRLEN len = strlen(hep->h_name);
1955 if (len <= nodemax) {
1956 strcpy(name->nodename, hep->h_name);
1957 }
1958 else {
1959 strncpy(name->nodename, hep->h_name, nodemax);
1960 name->nodename[nodemax] = '\0';
1961 }
1962 }
1963 else {
1964 DWORD sz = nodemax;
1965 if (!GetComputerName(name->nodename, &sz))
1966 *name->nodename = '\0';
1967 }
1968
1969 /* machine (architecture) */
1970 {
1971 SYSTEM_INFO info;
fe537c65 1972 DWORD procarch;
b2af26b1
GS
1973 char *arch;
1974 GetSystemInfo(&info);
a6c40364 1975
6f24f39d
JK
1976#if (defined(__BORLANDC__)&&(__BORLANDC__<=0x520)) \
1977 || (defined(__MINGW32__) && !defined(_ANONYMOUS_UNION))
fe537c65 1978 procarch = info.u.s.wProcessorArchitecture;
a6c40364 1979#else
fe537c65 1980 procarch = info.wProcessorArchitecture;
a6c40364 1981#endif
fe537c65 1982 switch (procarch) {
b2af26b1
GS
1983 case PROCESSOR_ARCHITECTURE_INTEL:
1984 arch = "x86"; break;
1985 case PROCESSOR_ARCHITECTURE_MIPS:
1986 arch = "mips"; break;
1987 case PROCESSOR_ARCHITECTURE_ALPHA:
1988 arch = "alpha"; break;
1989 case PROCESSOR_ARCHITECTURE_PPC:
1990 arch = "ppc"; break;
fe537c65
GS
1991#ifdef PROCESSOR_ARCHITECTURE_SHX
1992 case PROCESSOR_ARCHITECTURE_SHX:
1993 arch = "shx"; break;
1994#endif
1995#ifdef PROCESSOR_ARCHITECTURE_ARM
1996 case PROCESSOR_ARCHITECTURE_ARM:
1997 arch = "arm"; break;
1998#endif
1999#ifdef PROCESSOR_ARCHITECTURE_IA64
2000 case PROCESSOR_ARCHITECTURE_IA64:
2001 arch = "ia64"; break;
2002#endif
2003#ifdef PROCESSOR_ARCHITECTURE_ALPHA64
2004 case PROCESSOR_ARCHITECTURE_ALPHA64:
2005 arch = "alpha64"; break;
2006#endif
2007#ifdef PROCESSOR_ARCHITECTURE_MSIL
2008 case PROCESSOR_ARCHITECTURE_MSIL:
2009 arch = "msil"; break;
2010#endif
2011#ifdef PROCESSOR_ARCHITECTURE_AMD64
2012 case PROCESSOR_ARCHITECTURE_AMD64:
2013 arch = "amd64"; break;
2014#endif
2015#ifdef PROCESSOR_ARCHITECTURE_IA32_ON_WIN64
2016 case PROCESSOR_ARCHITECTURE_IA32_ON_WIN64:
2017 arch = "ia32-64"; break;
2018#endif
2019#ifdef PROCESSOR_ARCHITECTURE_UNKNOWN
2020 case PROCESSOR_ARCHITECTURE_UNKNOWN:
b2af26b1 2021 arch = "unknown"; break;
fe537c65
GS
2022#endif
2023 default:
2024 sprintf(name->machine, "unknown(0x%x)", procarch);
2025 arch = name->machine;
2026 break;
b2af26b1 2027 }
fe537c65
GS
2028 if (name->machine != arch)
2029 strcpy(name->machine, arch);
b2af26b1
GS
2030 }
2031 return 0;
2032}
2033
8fb3fcfb
NIS
2034/* Timing related stuff */
2035
3fadfdf1
NIS
2036int
2037do_raise(pTHX_ int sig)
2038{
2039 if (sig < SIG_SIZE) {
2040 Sighandler_t handler = w32_sighandler[sig];
2041 if (handler == SIG_IGN) {
2042 return 0;
2043 }
2044 else if (handler != SIG_DFL) {
2045 (*handler)(sig);
2046 return 0;
2047 }
2048 else {
2049 /* Choose correct default behaviour */
2050 switch (sig) {
2051#ifdef SIGCLD
2052 case SIGCLD:
2053#endif
2054#ifdef SIGCHLD
2055 case SIGCHLD:
2056#endif
2057 case 0:
2058 return 0;
2059 case SIGTERM:
2060 default:
2061 break;
2062 }
2063 }
2064 }
2065 /* Tell caller to exit thread/process as approriate */
2066 return 1;
2067}
2068
2069void
2070sig_terminate(pTHX_ int sig)
2071{
2072 Perl_warn(aTHX_ "Terminating on signal SIG%s(%d)\n",PL_sig_name[sig], sig);
2073 /* exit() seems to be safe, my_exit() or die() is a problem in ^C
2074 thread
2075 */
2076 exit(sig);
2077}
2078
8fb3fcfb
NIS
2079DllExport int
2080win32_async_check(pTHX)
2081{
2082 MSG msg;
aeecf691
JD
2083 HWND hwnd = w32_message_hwnd;
2084
2085 w32_poll_count = 0;
2086
c71e9bcc
JD
2087 if (hwnd == INVALID_HANDLE_VALUE) {
2088 /* Call PeekMessage() to mark all pending messages in the queue as "old".
2089 * This is necessary when we are being called by win32_msgwait() to
2090 * make sure MsgWaitForMultipleObjects() stops reporting the same waiting
2091 * message over and over. An example how this can happen is when
2092 * Perl is calling win32_waitpid() inside a GUI application and the GUI
2093 * is generating messages before the process terminated.
2094 */
2095 PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE|PM_NOYIELD);
41ee5757
JD
2096 if (PL_sig_pending)
2097 despatch_signals();
aeecf691 2098 return 1;
c71e9bcc 2099 }
aeecf691 2100
7e5f34c0
NIS
2101 /* Passing PeekMessage -1 as HWND (2nd arg) only get PostThreadMessage() messages
2102 * and ignores window messages - should co-exist better with windows apps e.g. Tk
3fadfdf1 2103 */
aeecf691
JD
2104 if (hwnd == NULL)
2105 hwnd = (HWND)-1;
8fb3fcfb 2106
aeecf691
JD
2107 while (PeekMessage(&msg, hwnd, WM_TIMER, WM_TIMER, PM_REMOVE|PM_NOYIELD) ||
2108 PeekMessage(&msg, hwnd, WM_USER_MIN, WM_USER_MAX, PM_REMOVE|PM_NOYIELD))
2109 {
2110 switch (msg.message) {
2111#ifdef USE_ITHREADS
2112 case WM_USER_MESSAGE: {
2113 int child = find_pseudo_pid(msg.wParam);
2114 if (child >= 0)
2115 w32_pseudo_child_message_hwnds[child] = (HWND)msg.lParam;
2116 break;
2117 }
7e5f34c0
NIS
2118#endif
2119
aeecf691
JD
2120 case WM_USER_KILL: {
2121 /* We use WM_USER to fake kill() with other signals */
2122 int sig = msg.wParam;
2123 if (do_raise(aTHX_ sig))
2124 sig_terminate(aTHX_ sig);
8fb3fcfb
NIS
2125 break;
2126 }
3fadfdf1 2127
8fb3fcfb
NIS
2128 case WM_TIMER: {
2129 /* alarm() is a one-shot but SetTimer() repeats so kill it */
26549e08 2130 if (w32_timerid && w32_timerid==msg.wParam) {
aeecf691 2131 KillTimer(w32_message_hwnd, w32_timerid);
3fadfdf1 2132 w32_timerid=0;
8fb3fcfb 2133
aeecf691
JD
2134 /* Now fake a call to signal handler */
2135 if (do_raise(aTHX_ 14))
2136 sig_terminate(aTHX_ 14);
2137 }
8fb3fcfb
NIS
2138 break;
2139 }
aeecf691 2140 } /* switch */
8fb3fcfb
NIS
2141 }
2142
7e5f34c0 2143 /* Above or other stuff may have set a signal flag */
8fb3fcfb
NIS
2144 if (PL_sig_pending) {
2145 despatch_signals();
2146 }
aeecf691 2147 return 1;
8fb3fcfb
NIS
2148}
2149
089197fa
GS
2150/* This function will not return until the timeout has elapsed, or until
2151 * one of the handles is ready. */
8fb3fcfb
NIS
2152DllExport DWORD
2153win32_msgwait(pTHX_ DWORD count, LPHANDLE handles, DWORD timeout, LPDWORD resultp)
2154{
2155 /* We may need several goes at this - so compute when we stop */
2156 DWORD ticks = 0;
2157 if (timeout != INFINITE) {
2158 ticks = GetTickCount();
2159 timeout += ticks;
2160 }
2161 while (1) {
29e13651 2162 DWORD result = MsgWaitForMultipleObjects(count,handles,FALSE,timeout-ticks, QS_POSTMESSAGE|QS_TIMER);
8fb3fcfb
NIS
2163 if (resultp)
2164 *resultp = result;
2165 if (result == WAIT_TIMEOUT) {
3fadfdf1
NIS
2166 /* Ran out of time - explicit return of zero to avoid -ve if we
2167 have scheduling issues
2168 */
8fb3fcfb
NIS
2169 return 0;
2170 }
2171 if (timeout != INFINITE) {
2172 ticks = GetTickCount();
2173 }
2174 if (result == WAIT_OBJECT_0 + count) {
2175 /* Message has arrived - check it */
089197fa 2176 (void)win32_async_check(aTHX);
8fb3fcfb
NIS
2177 }
2178 else {
2179 /* Not timeout or message - one of handles is ready */
2180 break;
2181 }
2182 }
2183 /* compute time left to wait */
2184 ticks = timeout - ticks;
2185 /* If we are past the end say zero */
2186 return (ticks > 0) ? ticks : 0;
2187}
2188
932b7487
RC
2189int
2190win32_internal_wait(int *status, DWORD timeout)
2191{
2192 /* XXX this wait emulation only knows about processes
2193 * spawned via win32_spawnvp(P_NOWAIT, ...).
2194 */
2195 dTHX;
2196 int i, retval;
2197 DWORD exitcode, waitcode;
2198
2199#ifdef USE_ITHREADS
2200 if (w32_num_pseudo_children) {
8fb3fcfb
NIS
2201 win32_msgwait(aTHX_ w32_num_pseudo_children, w32_pseudo_child_handles,
2202 timeout, &waitcode);
932b7487
RC
2203 /* Time out here if there are no other children to wait for. */
2204 if (waitcode == WAIT_TIMEOUT) {
2205 if (!w32_num_children) {
2206 return 0;
2207 }
2208 }
2209 else if (waitcode != WAIT_FAILED) {
2210 if (waitcode >= WAIT_ABANDONED_0
2211 && waitcode < WAIT_ABANDONED_0 + w32_num_pseudo_children)
2212 i = waitcode - WAIT_ABANDONED_0;
2213 else
2214 i = waitcode - WAIT_OBJECT_0;
2215 if (GetExitCodeThread(w32_pseudo_child_handles[i], &exitcode)) {
2216 *status = (int)((exitcode & 0xff) << 8);
2217 retval = (int)w32_pseudo_child_pids[i];
2218 remove_dead_pseudo_process(i);
2219 return -retval;
2220 }
2221 }
2222 }
2223#endif
2224
2225 if (!w32_num_children) {
2226 errno = ECHILD;
2227 return -1;
2228 }
2229
2230 /* if a child exists, wait for it to die */
8fb3fcfb 2231 win32_msgwait(aTHX_ w32_num_children, w32_child_handles, timeout, &waitcode);
932b7487
RC
2232 if (waitcode == WAIT_TIMEOUT) {
2233 return 0;
2234 }
2235 if (waitcode != WAIT_FAILED) {
2236 if (waitcode >= WAIT_ABANDONED_0
2237 && waitcode < WAIT_ABANDONED_0 + w32_num_children)
2238 i = waitcode - WAIT_ABANDONED_0;
2239 else
2240 i = waitcode - WAIT_OBJECT_0;
2241 if (GetExitCodeProcess(w32_child_handles[i], &exitcode) ) {
2242 *status = (int)((exitcode & 0xff) << 8);
2243 retval = (int)w32_child_pids[i];
2244 remove_dead_process(i);
2245 return retval;
2246 }
2247 }
2248
932b7487
RC
2249 errno = GetLastError();
2250 return -1;
2251}
2252
b2af26b1 2253DllExport int
f55ee38a
GS
2254win32_waitpid(int pid, int *status, int flags)
2255{
acfe0abc 2256 dTHX;
922b1888 2257 DWORD timeout = (flags & WNOHANG) ? 0 : INFINITE;
0aaad0ff 2258 int retval = -1;
c66b022d 2259 long child;
7766f137 2260 if (pid == -1) /* XXX threadid == 1 ? */
932b7487 2261 return win32_internal_wait(status, timeout);
7766f137
GS
2262#ifdef USE_ITHREADS
2263 else if (pid < 0) {
c66b022d 2264 child = find_pseudo_pid(-pid);
7766f137
GS
2265 if (child >= 0) {
2266 HANDLE hThread = w32_pseudo_child_handles[child];
8fb3fcfb
NIS
2267 DWORD waitcode;
2268 win32_msgwait(aTHX_ 1, &hThread, timeout, &waitcode);
2f67576d
BC
2269 if (waitcode == WAIT_TIMEOUT) {
2270 return 0;
2271 }
8fb3fcfb 2272 else if (waitcode == WAIT_OBJECT_0) {
7766f137
GS
2273 if (GetExitCodeThread(hThread, &waitcode)) {
2274 *status = (int)((waitcode & 0xff) << 8);
2275 retval = (int)w32_pseudo_child_pids[child];
2276 remove_dead_pseudo_process(child);
68a29c53 2277 return -retval;
7766f137
GS
2278 }
2279 }
2280 else
2281 errno = ECHILD;
2282 }
922b1888
GS
2283 else if (IsWin95()) {
2284 pid = -pid;
2285 goto alien_process;
2286 }
7766f137
GS
2287 }
2288#endif
f55ee38a 2289 else {
922b1888
GS
2290 HANDLE hProcess;
2291 DWORD waitcode;
c66b022d 2292 child = find_pid(pid);
0aaad0ff 2293 if (child >= 0) {
922b1888 2294 hProcess = w32_child_handles[child];
8fb3fcfb 2295 win32_msgwait(aTHX_ 1, &hProcess, timeout, &waitcode);
a7867d0a
GS
2296 if (waitcode == WAIT_TIMEOUT) {
2297 return 0;
2298 }
8fb3fcfb 2299 else if (waitcode == WAIT_OBJECT_0) {
922b1888
GS
2300 if (GetExitCodeProcess(hProcess, &waitcode)) {
2301 *status = (int)((waitcode & 0xff) << 8);
2302 retval = (int)w32_child_pids[child];
2303 remove_dead_process(child);
2304 return retval;
2305 }
a7867d0a 2306 }
0aaad0ff
GS
2307 else
2308 errno = ECHILD;
2309 }
2310 else {
922b1888
GS
2311alien_process:
2312 hProcess = OpenProcess(PROCESS_ALL_ACCESS, TRUE,
2313 (IsWin95() ? -pid : pid));
2314 if (hProcess) {
8fb3fcfb 2315 win32_msgwait(aTHX_ 1, &hProcess, timeout, &waitcode);
922b1888 2316 if (waitcode == WAIT_TIMEOUT) {
48db714f 2317 CloseHandle(hProcess);
922b1888
GS
2318 return 0;
2319 }
8fb3fcfb 2320 else if (waitcode == WAIT_OBJECT_0) {
922b1888
GS
2321 if (GetExitCodeProcess(hProcess, &waitcode)) {
2322 *status = (int)((waitcode & 0xff) << 8);
2323 CloseHandle(hProcess);
2324 return pid;
2325 }
2326 }
2327 CloseHandle(hProcess);
2328 }
2329 else
2330 errno = ECHILD;
0aaad0ff 2331 }
f55ee38a 2332 }
3fadfdf1 2333 return retval >= 0 ? pid : retval;
f55ee38a
GS
2334}
2335
2336DllExport int
2d7a9237
GS
2337win32_wait(int *status)
2338{
932b7487 2339 return win32_internal_wait(status, INFINITE);
2d7a9237 2340}
d55594ae 2341
8fb3fcfb
NIS
2342DllExport unsigned int
2343win32_sleep(unsigned int t)
d55594ae 2344{
acfe0abc 2345 dTHX;
8fb3fcfb
NIS
2346 /* Win32 times are in ms so *1000 in and /1000 out */
2347 return win32_msgwait(aTHX_ 0, NULL, t*1000, NULL)/1000;
d55594ae
GS
2348}
2349
f3986ebb
GS
2350DllExport unsigned int
2351win32_alarm(unsigned int sec)
0a753a76 2352{
3fadfdf1 2353 /*
d55594ae 2354 * the 'obvious' implentation is SetTimer() with a callback
3fadfdf1
NIS
2355 * which does whatever receiving SIGALRM would do
2356 * we cannot use SIGALRM even via raise() as it is not
d55594ae 2357 * one of the supported codes in <signal.h>
3fadfdf1 2358 */
acfe0abc 2359 dTHX;
aeecf691
JD
2360
2361 if (w32_message_hwnd == INVALID_HANDLE_VALUE)
2362 w32_message_hwnd = win32_create_message_window();
2363
8fb3fcfb 2364 if (sec) {
aeecf691
JD
2365 if (w32_message_hwnd == NULL)
2366 w32_timerid = SetTimer(NULL, w32_timerid, sec*1000, NULL);
2367 else {
2368 w32_timerid = 1;
2369 SetTimer(w32_message_hwnd, w32_timerid, sec*1000, NULL);
2370 }
8fb3fcfb
NIS
2371 }
2372 else {
2373 if (w32_timerid) {
aeecf691
JD
2374 KillTimer(w32_message_hwnd, w32_timerid);
2375 w32_timerid = 0;
8fb3fcfb 2376 }
3fadfdf1 2377 }
afe91769 2378 return 0;
0a753a76
PP
2379}
2380
26618a56 2381#ifdef HAVE_DES_FCRYPT
2d77217b 2382extern char * des_fcrypt(const char *txt, const char *salt, char *cbuf);
ff95b63e 2383#endif
26618a56
GS
2384
2385DllExport char *
2386win32_crypt(const char *txt, const char *salt)
2387{
acfe0abc 2388 dTHX;
ff95b63e 2389#ifdef HAVE_DES_FCRYPT
3352bfcb 2390 return des_fcrypt(txt, salt, w32_crypt_buffer);
ff95b63e 2391#else
25dbdbbc 2392 Perl_croak(aTHX_ "The crypt() function is unimplemented due to excessive paranoia.");
b8957cf1 2393 return Nullch;
ff95b63e 2394#endif
26618a56 2395}
26618a56 2396
9e5f57de 2397#ifdef USE_FIXED_OSFHANDLE
390b85e7
GS
2398
2399#define FOPEN 0x01 /* file handle open */
b181b6fb 2400#define FNOINHERIT 0x10 /* file handle opened O_NOINHERIT */
390b85e7
GS
2401#define FAPPEND 0x20 /* file handle opened O_APPEND */
2402#define FDEV 0x40 /* file handle refers to device */
2403#define FTEXT 0x80 /* file handle is in text mode */
2404
390b85e7 2405/***
c623ac67 2406*int my_open_osfhandle(intptr_t osfhandle, int flags) - open C Runtime file handle
390b85e7
GS
2407*
2408*Purpose:
2409* This function allocates a free C Runtime file handle and associates
2410* it with the Win32 HANDLE specified by the first parameter. This is a
9e5f57de
GS
2411* temperary fix for WIN95's brain damage GetFileType() error on socket
2412* we just bypass that call for socket
2413*
2414* This works with MSVC++ 4.0+ or GCC/Mingw32
390b85e7
GS
2415*
2416*Entry:
c623ac67 2417* intptr_t osfhandle - Win32 HANDLE to associate with C Runtime file handle.
390b85e7
GS
2418* int flags - flags to associate with C Runtime file handle.
2419*
2420*Exit:
2421* returns index of entry in fh, if successful
2422* return -1, if no free entry is found
2423*
2424*Exceptions:
2425*
2426*******************************************************************************/
2427
9e5f57de
GS
2428/*
2429 * we fake up some parts of the CRT that aren't exported by MSVCRT.dll
2430 * this lets sockets work on Win9X with GCC and should fix the problems
2431 * with perl95.exe
2432 * -- BKS, 1-23-2000
2433*/
2434
9e5f57de
GS
2435/* create an ioinfo entry, kill its handle, and steal the entry */
2436
b181b6fb
GS
2437static int
2438_alloc_osfhnd(void)
9e5f57de
GS
2439{
2440 HANDLE hF = CreateFile("NUL", 0, 0, NULL, OPEN_ALWAYS, 0, NULL);
c623ac67 2441 int fh = _open_osfhandle((intptr_t)hF, 0);
9e5f57de
GS
2442 CloseHandle(hF);
2443 if (fh == -1)
2444 return fh;
2445 EnterCriticalSection(&(_pioinfo(fh)->lock));
2446 return fh;
2447}
2448
390b85e7 2449static int
c623ac67 2450my_open_osfhandle(intptr_t osfhandle, int flags)
390b85e7
GS
2451{
2452 int fh;
2453 char fileflags; /* _osfile flags */
2454
2455 /* copy relevant flags from second parameter */
2456 fileflags = FDEV;
2457
9404a519 2458 if (flags & O_APPEND)
390b85e7
GS
2459 fileflags |= FAPPEND;
2460
9404a519 2461 if (flags & O_TEXT)
390b85e7
GS
2462 fileflags |= FTEXT;
2463
b181b6fb
GS
2464 if (flags & O_NOINHERIT)
2465 fileflags |= FNOINHERIT;
2466
390b85e7 2467 /* attempt to allocate a C Runtime file handle */
9404a519 2468 if ((fh = _alloc_osfhnd()) == -1) {
390b85e7
GS
2469 errno = EMFILE; /* too many open files */
2470 _doserrno = 0L; /* not an OS error */
2471 return -1; /* return error to caller */
2472 }
2473
2474 /* the file is open. now, set the info in _osfhnd array */
2475 _set_osfhnd(fh, osfhandle);
2476
2477 fileflags |= FOPEN; /* mark as open */
2478
390b85e7 2479 _osfile(fh) = fileflags; /* set osfile entry */
dd8f4818 2480 LeaveCriticalSection(&_pioinfo(fh)->lock);
390b85e7
GS
2481
2482 return fh; /* return handle */
2483}
2484
f3986ebb 2485#endif /* USE_FIXED_OSFHANDLE */
390b85e7
GS
2486
2487/* simulate flock by locking a range on the file */
2488
2489#define LK_ERR(f,i) ((f) ? (i = 0) : (errno = GetLastError()))
2490#define LK_LEN 0xffff0000
2491
f3986ebb
GS
2492DllExport int
2493win32_flock(int fd, int oper)
390b85e7
GS
2494{
2495 OVERLAPPED o;
2496 int i = -1;
2497 HANDLE fh;
2498
f3986ebb 2499 if (!IsWinNT()) {
acfe0abc 2500 dTHX;
4f63d024 2501 Perl_croak_nocontext("flock() unimplemented on this platform");
f3986ebb
GS
2502 return -1;
2503 }
390b85e7
GS
2504 fh = (HANDLE)_get_osfhandle(fd);
2505 memset(&o, 0, sizeof(o));
2506
2507 switch(oper) {
2508 case LOCK_SH: /* shared lock */
2509 LK_ERR(LockFileEx(fh, 0, 0, LK_LEN, 0, &o),i);
2510 break;
2511 case LOCK_EX: /* exclusive lock */
2512 LK_ERR(LockFileEx(fh, LOCKFILE_EXCLUSIVE_LOCK, 0, LK_LEN, 0, &o),i);
2513 break;
2514 case LOCK_SH|LOCK_NB: /* non-blocking shared lock */
2515 LK_ERR(LockFileEx(fh, LOCKFILE_FAIL_IMMEDIATELY, 0, LK_LEN, 0, &o),i);
2516 break;
2517 case LOCK_EX|LOCK_NB: /* non-blocking exclusive lock */
2518 LK_ERR(LockFileEx(fh,
2519 LOCKFILE_EXCLUSIVE_LOCK|LOCKFILE_FAIL_IMMEDIATELY,
2520 0, LK_LEN, 0, &o),i);
2521 break;
2522 case LOCK_UN: /* unlock lock */
2523 LK_ERR(UnlockFileEx(fh, 0, LK_LEN, 0, &o),i);
2524 break;
2525 default: /* unknown */
2526 errno = EINVAL;
2527 break;
2528 }
2529 return i;
2530}
2531
2532#undef LK_ERR
2533#undef LK_LEN
2534
68dc0745
PP
2535/*
2536 * redirected io subsystem for all XS modules
2537 *
2538 */
0a753a76 2539
68dc0745
PP
2540DllExport int *
2541win32_errno(void)
0a753a76 2542{
390b85e7 2543 return (&errno);
0a753a76
PP
2544}
2545
dcb2879a
GS
2546DllExport char ***
2547win32_environ(void)
2548{
390b85e7 2549 return (&(_environ));
dcb2879a
GS
2550}
2551
68dc0745
PP
2552/* the rest are the remapped stdio routines */
2553DllExport FILE *
2554win32_stderr(void)
0a753a76 2555{
390b85e7 2556 return (stderr);
0a753a76
PP
2557}
2558
68dc0745
PP
2559DllExport FILE *
2560win32_stdin(void)
0a753a76 2561{
390b85e7 2562 return (stdin);
0a753a76
PP
2563}
2564
68dc0745
PP
2565DllExport FILE *
2566win32_stdout()
0a753a76 2567{
390b85e7 2568 return (stdout);
0a753a76
PP
2569}
2570
68dc0745
PP
2571DllExport int
2572win32_ferror(FILE *fp)
0a753a76 2573{
390b85e7 2574 return (ferror(fp));
0a753a76
PP
2575}
2576
2577
68dc0745
PP
2578DllExport int
2579win32_feof(FILE *fp)
0a753a76 2580{
390b85e7 2581 return (feof(fp));
0a753a76
PP
2582}
2583
68dc0745 2584/*
3fadfdf1 2585 * Since the errors returned by the socket error function
68dc0745
PP
2586 * WSAGetLastError() are not known by the library routine strerror
2587 * we have to roll our own.
2588 */
0a753a76 2589
68dc0745 2590DllExport char *
3fadfdf1 2591win32_strerror(int e)
0a753a76 2592{
6f24f39d 2593#if !defined __BORLANDC__ && !defined __MINGW32__ /* compiler intolerance */
68dc0745 2594 extern int sys_nerr;
3e3baf6d 2595#endif
68dc0745 2596 DWORD source = 0;
0a753a76 2597
9404a519 2598 if (e < 0 || e > sys_nerr) {
acfe0abc 2599 dTHX;
9404a519 2600 if (e < 0)
68dc0745 2601 e = GetLastError();
0a753a76 2602
9404a519 2603 if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, &source, e, 0,
3352bfcb 2604 w32_strerror_buffer,
3fadfdf1 2605 sizeof(w32_strerror_buffer), NULL) == 0)
3352bfcb 2606 strcpy(w32_strerror_buffer, "Unknown Error");
0a753a76 2607
3352bfcb 2608 return w32_strerror_buffer;
68dc0745 2609 }
390b85e7 2610 return strerror(e);
0a753a76
PP
2611}
2612
22fae026 2613DllExport void
c5be433b 2614win32_str_os_error(void *sv, DWORD dwErr)
22fae026
TM
2615{
2616 DWORD dwLen;
2617 char *sMsg;
2618 dwLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER
2619 |FORMAT_MESSAGE_IGNORE_INSERTS
2620 |FORMAT_MESSAGE_FROM_SYSTEM, NULL,
2621 dwErr, 0, (char *)&sMsg, 1, NULL);
2ce77adf 2622 /* strip trailing whitespace and period */
22fae026 2623 if (0 < dwLen) {
2ce77adf
GS
2624 do {
2625 --dwLen; /* dwLen doesn't include trailing null */
2626 } while (0 < dwLen && isSPACE(sMsg[dwLen]));
22fae026
TM
2627 if ('.' != sMsg[dwLen])
2628 dwLen++;
2ce77adf 2629 sMsg[dwLen] = '\0';
22fae026
TM
2630 }
2631 if (0 == dwLen) {
c69f6586 2632 sMsg = (char*)LocalAlloc(0, 64/**sizeof(TCHAR)*/);
db7c17d7
GS
2633 if (sMsg)
2634 dwLen = sprintf(sMsg,
2635 "Unknown error #0x%lX (lookup 0x%lX)",
2636 dwErr, GetLastError());
2637 }
2638 if (sMsg) {
acfe0abc 2639 dTHX;
db7c17d7
GS
2640 sv_setpvn((SV*)sv, sMsg, dwLen);
2641 LocalFree(sMsg);
22fae026 2642 }
22fae026
TM
2643}
2644
68dc0745
PP
2645DllExport int
2646win32_fprintf(FILE *fp, const char *format, ...)
0a753a76 2647{
68dc0745
PP
2648 va_list marker;
2649 va_start(marker, format); /* Initialize variable arguments. */
0a753a76 2650
390b85e7 2651 return (vfprintf(fp, format, marker));
0a753a76
PP
2652}
2653
68dc0745
PP
2654DllExport int
2655win32_printf(const char *format, ...)
0a753a76 2656{
68dc0745
PP
2657 va_list marker;
2658 va_start(marker, format); /* Initialize variable arguments. */
0a753a76 2659
390b85e7 2660 return (vprintf(format, marker));
0a753a76
PP
2661}
2662
68dc0745
PP
2663DllExport int
2664win32_vfprintf(FILE *fp, const char *format, va_list args)
0a753a76 2665{
390b85e7 2666 return (vfprintf(fp, format, args));
0a753a76
PP
2667}
2668
96e4d5b1
PP
2669DllExport int
2670win32_vprintf(const char *format, va_list args)
2671{
390b85e7 2672 return (vprintf(format, args));
96e4d5b1
PP
2673}
2674
68dc0745
PP
2675DllExport size_t
2676win32_fread(void *buf, size_t size, size_t count, FILE *fp)
0a753a76 2677{
390b85e7 2678 return fread(buf, size, count, fp);
0a753a76
PP
2679}
2680
68dc0745
PP
2681DllExport size_t
2682win32_fwrite(const void *buf, size_t size, size_t count, FILE *fp)
0a753a76 2683{
390b85e7 2684 return fwrite(buf, size, count, fp);
0a753a76
PP
2685}
2686
7fac1903
GS
2687#define MODE_SIZE 10
2688
68dc0745
PP
2689DllExport FILE *
2690win32_fopen(const char *filename, const char *mode)
0a753a76 2691{
acfe0abc 2692 dTHX;
1c5905c2 2693 FILE *f;
3fadfdf1 2694
c5be433b
GS
2695 if (!*filename)
2696 return NULL;
2697
68dc0745 2698 if (stricmp(filename, "/dev/null")==0)
7fac1903
GS
2699 filename = "NUL";
2700
8c56068e 2701 f = fopen(PerlDir_mapA(filename), mode);
1c5905c2
GS
2702 /* avoid buffering headaches for child processes */
2703 if (f && *mode == 'a')
2704 win32_fseek(f, 0, SEEK_END);
2705 return f;
0a753a76
PP
2706}
2707
f3986ebb
GS
2708#ifndef USE_SOCKETS_AS_HANDLES
2709#undef fdopen
2710#define fdopen my_fdopen
2711#endif
2712
68dc0745 2713DllExport FILE *
7fac1903 2714win32_fdopen(int handle, const char *mode)
0a753a76 2715{
acfe0abc 2716 dTHX;
1c5905c2 2717 FILE *f;
8c56068e 2718 f = fdopen(handle, (char *) mode);
1c5905c2
GS
2719 /* avoid buffering headaches for child processes */
2720 if (f && *mode == 'a')
2721 win32_fseek(f, 0, SEEK_END);
2722 return f;
0a753a76
PP
2723}
2724
68dc0745 2725DllExport FILE *
7fac1903 2726win32_freopen(const char *path, const char *mode, FILE *stream)
0a753a76 2727{
acfe0abc 2728 dTHX;
68dc0745 2729 if (stricmp(path, "/dev/null")==0)
7fac1903
GS
2730 path = "NUL";
2731
7766f137 2732 return freopen(PerlDir_mapA(path), mode, stream);
0a753a76
PP
2733}
2734
68dc0745
PP
2735DllExport int
2736win32_fclose(FILE *pf)
0a753a76 2737{
f3986ebb 2738 return my_fclose(pf); /* defined in win32sck.c */
0a753a76
PP
2739}
2740
68dc0745
PP
2741DllExport int
2742win32_fputs(const char *s,FILE *pf)
0a753a76 2743{
390b85e7 2744 return fputs(s, pf);
0a753a76
PP
2745}
2746
68dc0745
PP
2747DllExport int
2748win32_fputc(int c,FILE *pf)
0a753a76 2749{
390b85e7 2750 return fputc(c,pf);
0a753a76
PP
2751}
2752
68dc0745
PP
2753DllExport int
2754win32_ungetc(int c,FILE *pf)
0a753a76 2755{
390b85e7 2756 return ungetc(c,pf);
0a753a76
PP
2757}
2758
68dc0745
PP
2759DllExport int
2760win32_getc(FILE *pf)
0a753a76 2761{
390b85e7 2762 return getc(pf);
0a753a76
PP
2763}
2764
68dc0745
PP
2765DllExport int
2766win32_fileno(FILE *pf)
0a753a76 2767{
390b85e7 2768 return fileno(pf);
0a753a76
PP
2769}
2770
68dc0745
PP
2771DllExport void
2772win32_clearerr(FILE *pf)
0a753a76 2773{
390b85e7 2774 clearerr(pf);
68dc0745 2775 return;
0a753a76
PP
2776}
2777
68dc0745
PP
2778DllExport int
2779win32_fflush(FILE *pf)
0a753a76 2780{
390b85e7 2781 return fflush(pf);
0a753a76
PP
2782}
2783
c623ac67 2784DllExport Off_t
68dc0745 2785win32_ftell(FILE *pf)
0a753a76 2786{
c623ac67 2787#if defined(WIN64) || defined(USE_LARGE_FILES)
56460430 2788#if defined(__BORLANDC__) /* buk */
a810272a
NS
2789 return win32_tell( fileno( pf ) );
2790#else
c623ac67
GS
2791 fpos_t pos;
2792 if (fgetpos(pf, &pos))
2793 return -1;
2794 return (Off_t)pos;
a810272a 2795#endif
c623ac67 2796#else
390b85e7 2797 return ftell(pf);
c623ac67 2798#endif
0a753a76
PP
2799}
2800
68dc0745 2801DllExport int
c623ac67 2802win32_fseek(FILE *pf, Off_t offset,int origin)
0a753a76 2803{
c623ac67 2804#if defined(WIN64) || defined(USE_LARGE_FILES)
a810272a
NS
2805#if defined(__BORLANDC__) /* buk */
2806 return win32_lseek(
2807 fileno(pf),
2808 offset,
2809 origin
2810 );
2811#else
c623ac67
GS
2812 fpos_t pos;
2813 switch (origin) {
2814 case SEEK_CUR:
2815 if (fgetpos(pf, &pos))
2816 return -1;
2817 offset += pos;
2818 break;
2819 case SEEK_END:
2820 fseek(pf, 0, SEEK_END);
2821 pos = _telli64(fileno(pf));
2822 offset += pos;
2823 break;
2824 case SEEK_SET:
2825 break;
2826 default:
2827 errno = EINVAL;
2828 return -1;
2829 }
2830 return fsetpos(pf, &offset);
a810272a 2831#endif
c623ac67 2832#else
8859a7a0 2833 return fseek(pf, (long)offset, origin);
c623ac67 2834#endif
0a753a76
PP
2835}
2836
68dc0745
PP
2837DllExport int
2838win32_fgetpos(FILE *pf,fpos_t *p)
0a753a76 2839{
a810272a
NS
2840#if defined(__BORLANDC__) && defined(USE_LARGE_FILES) /* buk */
2841 if( win32_tell(fileno(pf)) == -1L ) {
2842 errno = EBADF;
2843 return -1;
2844 }
2845 return 0;
2846#else
390b85e7 2847 return fgetpos(pf, p);
a810272a 2848#endif
0a753a76
PP
2849}
2850
68dc0745
PP
2851DllExport int
2852win32_fsetpos(FILE *pf,const fpos_t *p)
0a753a76 2853{
a810272a
NS
2854#if defined(__BORLANDC__) && defined(USE_LARGE_FILES) /* buk */
2855 return win32_lseek(fileno(pf), *p, SEEK_CUR);
2856#else
390b85e7 2857 return fsetpos(pf, p);
a810272a 2858#endif
0a753a76
PP
2859}
2860
68dc0745
PP
2861DllExport void
2862win32_rewind(FILE *pf)
0a753a76 2863{
390b85e7 2864 rewind(pf);
68dc0745 2865 return;
0a753a76
PP
2866}
2867
2941a2e1
JH
2868DllExport int
2869win32_tmpfd(void)
0a753a76 2870{
b3122bc4
JH
2871 dTHX;
2872 char prefix[MAX_PATH+1];
2873 char filename[MAX_PATH+1];
2874 DWORD len = GetTempPath(MAX_PATH, prefix);
2875 if (len && len < MAX_PATH) {
2876 if (GetTempFileName(prefix, "plx", 0, filename)) {
2877 HANDLE fh = CreateFile(filename,
2878 DELETE | GENERIC_READ | GENERIC_WRITE,
2879 0,
2880 NULL,
2881 CREATE_ALWAYS,
2882 FILE_ATTRIBUTE_NORMAL
2883 | FILE_FLAG_DELETE_ON_CLOSE,
2884 NULL);
2885 if (fh != INVALID_HANDLE_VALUE) {
c623ac67 2886 int fd = win32_open_osfhandle((intptr_t)fh, 0);
b3122bc4 2887 if (fd >= 0) {
a051bdb4
VK
2888#if defined(__BORLANDC__)
2889 setmode(fd,O_BINARY);
2890#endif
b3122bc4
JH
2891 DEBUG_p(PerlIO_printf(Perl_debug_log,
2892 "Created tmpfile=%s\n",filename));
2941a2e1 2893 return fd;
b3122bc4
JH
2894 }
2895 }
2896 }
2897 }
2941a2e1
JH
2898 return -1;
2899}
2900
2901DllExport FILE*
2902win32_tmpfile(void)
2903{
2904 int fd = win32_tmpfd();
2905 if (fd >= 0)
2906 return win32_fdopen(fd, "w+b");
b3122bc4 2907 return NULL;
0a753a76
PP
2908}
2909
68dc0745
PP
2910DllExport void
2911win32_abort(void)
0a753a76 2912{
390b85e7 2913 abort();
68dc0745 2914 return;
0a753a76
PP
2915}
2916
68dc0745 2917DllExport int
c623ac67 2918win32_fstat(int fd, Stat_t *sbufptr)
0a753a76 2919{
2a07f407
VK
2920#ifdef __BORLANDC__
2921 /* A file designated by filehandle is not shown as accessible
2922 * for write operations, probably because it is opened for reading.
2923 * --Vadim Konovalov
3fadfdf1 2924 */
2a07f407 2925 BY_HANDLE_FILE_INFORMATION bhfi;
bda6ed21
PM
2926#if defined(WIN64) || defined(USE_LARGE_FILES)
2927 /* Borland 5.5.1 has a 64-bit stat, but only a 32-bit fstat */
2928 struct stat tmp;
2929 int rc = fstat(fd,&tmp);
2930
2931 sbufptr->st_dev = tmp.st_dev;
2932 sbufptr->st_ino = tmp.st_ino;
2933 sbufptr->st_mode = tmp.st_mode;
2934 sbufptr->st_nlink = tmp.st_nlink;
2935 sbufptr->st_uid = tmp.st_uid;
2936 sbufptr->st_gid = tmp.st_gid;
2937 sbufptr->st_rdev = tmp.st_rdev;
2938 sbufptr->st_size = tmp.st_size;
2939 sbufptr->st_atime = tmp.st_atime;
2940 sbufptr->st_mtime = tmp.st_mtime;
2941 sbufptr->st_ctime = tmp.st_ctime;
2942#else
2943 int rc = fstat(fd,sbufptr);
2944#endif
2945
2a07f407 2946 if (GetFileInformationByHandle((HANDLE)_get_osfhandle(fd), &bhfi)) {
bda6ed21
PM
2947#if defined(WIN64) || defined(USE_LARGE_FILES)
2948 sbufptr->st_size = (bhfi.nFileSizeHigh << 32) + bhfi.nFileSizeLow ;
2949#endif
2a07f407
VK
2950 sbufptr->st_mode &= 0xFE00;
2951 if (bhfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
2952 sbufptr->st_mode |= (S_IREAD + (S_IREAD >> 3) + (S_IREAD >> 6));
2953 else
2954 sbufptr->st_mode |= ((S_IREAD|S_IWRITE) + ((S_IREAD|S_IWRITE) >> 3)
2955 + ((S_IREAD|S_IWRITE) >> 6));
2956 }
2957 return rc;
2958#else
ed59ec62 2959 return my_fstat(fd,sbufptr);
2a07f407 2960#endif
0a753a76
PP
2961}
2962
68dc0745
PP
2963DllExport int
2964win32_pipe(int *pfd, unsigned int size, int mode)
0a753a76 2965{
390b85e7 2966 return _pipe(pfd, size, mode);
0a753a76
PP
2967}
2968
8c0134a8
NIS
2969DllExport PerlIO*
2970win32_popenlist(const char *mode, IV narg, SV **args)
2971{
2972 dTHX;
2973 Perl_croak(aTHX_ "List form of pipe open not implemented");
2974 return NULL;
2975}
2976
50892819
GS
2977/*
2978 * a popen() clone that respects PERL5SHELL
00b02797
JH
2979 *
2980 * changed to return PerlIO* rather than FILE * by BKS, 11-11-2000
50892819
GS
2981 */
2982
00b02797 2983DllExport PerlIO*
68dc0745 2984win32_popen(const char *command, const char *mode)
0a753a76 2985{
4b556e6c 2986#ifdef USE_RTL_POPEN
390b85e7 2987 return _popen(command, mode);
50892819 2988#else
2cbbe5a1 2989 dTHX;
50892819
GS
2990 int p[2];
2991 int parent, child;
2992 int stdfd, oldfd;
2993 int ourmode;
2994 int childpid;
1095be37
GS
2995 DWORD nhandle;
2996 HANDLE old_h;
2997 int lock_held = 0;
50892819
GS
2998
2999 /* establish which ends read and write */
3000 if (strchr(mode,'w')) {
3001 stdfd = 0; /* stdin */
3002 parent = 1;
3003 child = 0;
1095be37 3004 nhandle = STD_INPUT_HANDLE;
50892819
GS
3005 }
3006 else if (strchr(mode,'r')) {
3007 stdfd = 1; /* stdout */
3008 parent = 0;
3009 child = 1;
1095be37 3010 nhandle = STD_OUTPUT_HANDLE;
50892819
GS
3011 }
3012 else
3013 return NULL;
3014
3015 /* set the correct mode */
3016 if (strchr(mode,'b'))
3017 ourmode = O_BINARY;
3018 else if (strchr(mode,'t'))
3019 ourmode = O_TEXT;
3020 else
3021 ourmode = _fmode & (O_TEXT | O_BINARY);
3022
3023 /* the child doesn't inherit handles */
3024 ourmode |= O_NOINHERIT;
3025
1095be37 3026 if (win32_pipe(p, 512, ourmode) == -1)
50892819
GS
3027 return NULL;
3028
498d7dc4
GS
3029 /* save the old std handle (this needs to happen before the
3030 * dup2(), since that might call SetStdHandle() too) */
3031 OP_REFCNT_LOCK;
3032 lock_held = 1;
3033 old_h = GetStdHandle(nhandle);
3034
564914cd
AS
3035 /* save current stdfd */
3036 if ((oldfd = win32_dup(stdfd)) == -1)
3037 goto cleanup;
3038
50892819
GS
3039 /* make stdfd go to child end of pipe (implicitly closes stdfd) */
3040 /* stdfd will be inherited by the child */
3041 if (win32_dup2(p[child], stdfd) == -1)
3042 goto cleanup;
3043
3044 /* close the child end in parent */
3045 win32_close(p[child]);
3046
498d7dc4 3047 /* set the new std handle (in case dup2() above didn't) */
1095be37
GS
3048 SetStdHandle(nhandle, (HANDLE)_get_osfhandle(stdfd));
3049
50892819 3050 /* start the child */
4f63d024 3051 {
acfe0abc 3052 dTHX;
c5be433b 3053 if ((childpid = do_spawn_nowait((char*)command)) == -1)
4f63d024 3054 goto cleanup;
50892819 3055
498d7dc4
GS
3056 /* revert stdfd to whatever it was before */
3057 if (win32_dup2(oldfd, stdfd) == -1)
3058 goto cleanup;
3059
564914cd
AS
3060 /* close saved handle */
3061 win32_close(oldfd);
3062
498d7dc4
GS
3063 /* restore the old std handle (this needs to happen after the
3064 * dup2(), since that might call SetStdHandle() too */
1095be37
GS
3065 if (lock_held) {
3066 SetStdHandle(nhandle, old_h);
3067 OP_REFCNT_UNLOCK;
3068 lock_held = 0;
3069 }
3070
4755096e 3071 LOCK_FDPID_MUTEX;
4f63d024 3072 sv_setiv(*av_fetch(w32_fdpid, p[parent], TRUE), childpid);
4755096e 3073 UNLOCK_FDPID_MUTEX;
d91d68c1
R
3074
3075 /* set process id so that it can be returned by perl's open() */
3076 PL_forkprocess = childpid;
4f63d024 3077 }
50892819
GS
3078
3079 /* we have an fd, return a file stream */
00b02797 3080 return (PerlIO_fdopen(p[parent], (char *)mode));
50892819
GS
3081
3082cleanup:
3083 /* we don't need to check for errors here */
3084 win32_close(p[0]);
3085 win32_close(p[1]);
564914cd
AS
3086 if (oldfd != -1) {
3087 win32_dup2(oldfd, stdfd);
3088 win32_close(oldfd);
3089 }
1095be37
GS
3090 if (lock_held) {
3091 SetStdHandle(nhandle, old_h);
3092 OP_REFCNT_UNLOCK;
3093 lock_held = 0;
3094 }
50892819
GS
3095 return (NULL);
3096
4b556e6c 3097#endif /* USE_RTL_POPEN */
0a753a76
PP
3098}
3099
50892819
GS
3100/*
3101 * pclose() clone
3102 */
3103
68dc0745 3104DllExport int
00b02797 3105win32_pclose(PerlIO *pf)
0a753a76 3106{
4b556e6c 3107#ifdef USE_RTL_POPEN
390b85e7 3108 return _pclose(pf);
50892819 3109#else
acfe0abc 3110 dTHX;
e17cb2a9
JD
3111 int childpid, status;
3112 SV *sv;
3113
4755096e 3114 LOCK_FDPID_MUTEX;
00b02797 3115 sv = *av_fetch(w32_fdpid, PerlIO_fileno(pf), TRUE);
4755096e 3116
e17cb2a9
JD
3117 if (SvIOK(sv))
3118 childpid = SvIVX(sv);
3119 else
3120 childpid = 0;
50892819
GS
3121
3122 if (!childpid) {
db2fab48 3123 UNLOCK_FDPID_MUTEX;
50892819
GS
3124 errno = EBADF;
3125 return -1;
3126 }
3127
00b02797
JH
3128#ifdef USE_PERLIO
3129 PerlIO_close(pf);
3130#else
3131 fclose(pf);
3132#endif
e17cb2a9 3133 SvIVX(sv) = 0;
4755096e 3134 UNLOCK_FDPID_MUTEX;
e17cb2a9 3135
0aaad0ff
GS
3136 if (win32_waitpid(childpid, &status, 0) == -1)
3137 return -1;
50892819 3138
0aaad0ff 3139 return status;
50892819 3140
4b556e6c 3141#endif /* USE_RTL_POPEN */
0a753a76 3142}
6b980173
JD
3143
3144static BOOL WINAPI
3145Nt4CreateHardLinkW(
3146 LPCWSTR lpFileName,
3147 LPCWSTR lpExistingFileName,
3148 LPSECURITY_ATTRIBUTES lpSecurityAttributes)
3149{
3150 HANDLE handle;
3151 WCHAR wFullName[MAX_PATH+1];
3152 LPVOID lpContext = NULL;
3153 WIN32_STREAM_ID StreamId;
3154 DWORD dwSize = (char*)&StreamId.cStreamName - (char*)&StreamId;
3155 DWORD dwWritten;
3156 DWORD dwLen;
3157 BOOL bSuccess;
3158
3159 BOOL (__stdcall *pfnBackupWrite)(HANDLE, LPBYTE, DWORD, LPDWORD,
3160 BOOL, BOOL, LPVOID*) =
3161 (BOOL (__stdcall *)(HANDLE, LPBYTE, DWORD, LPDWORD,
3162 BOOL, BOOL, LPVOID*))
3163 GetProcAddress(GetModuleHandle("kernel32.dll"), "BackupWrite");
3164 if (pfnBackupWrite == NULL)
3165 return 0;
3166
3167 dwLen = GetFullPathNameW(lpFileName, MAX_PATH, wFullName, NULL);
3168 if (dwLen == 0)
3169 return 0;
3170 dwLen = (dwLen+1)*sizeof(WCHAR);
3171
3172 handle = CreateFileW(lpExistingFileName, FILE_WRITE_ATTRIBUTES,
3173 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
3174 NULL, OPEN_EXISTING, 0, NULL);
3175 if (handle == INVALID_HANDLE_VALUE)
3176 return 0;
3177
3178 StreamId.dwStreamId = BACKUP_LINK;
3179 StreamId.dwStreamAttributes = 0;
3180 StreamId.dwStreamNameSize = 0;
6f24f39d
JK
3181#if defined(__BORLANDC__) \
3182 ||(defined(__MINGW32__) && !defined(_ANONYMOUS_UNION))
4ce4f76e
GS
3183 StreamId.Size.u.HighPart = 0;
3184 StreamId.Size.u.LowPart = dwLen;
3185#else
6b980173
JD
3186 StreamId.Size.HighPart = 0;
3187 StreamId.Size.LowPart = dwLen;
4ce4f76e 3188#endif
6b980173
JD
3189
3190 bSuccess = pfnBackupWrite(handle, (LPBYTE)&StreamId, dwSize, &dwWritten,
3191 FALSE, FALSE, &lpContext);
3192 if (bSuccess) {
3193 bSuccess = pfnBackupWrite(handle, (LPBYTE)wFullName, dwLen, &dwWritten,
3194 FALSE, FALSE, &lpContext);
3195 pfnBackupWrite(handle, NULL, 0, &dwWritten, TRUE, FALSE, &lpContext);
3196 }
3197
3198 CloseHandle(handle);
3199 return bSuccess;
3200}
3201
3202DllExport int
3203win32_link(const char *oldname, const char *newname)
3204{
acfe0abc 3205 dTHX;
6b980173 3206 BOOL (__stdcall *pfnCreateHardLinkW)(LPCWSTR,LPCWSTR,LPSECURITY_ATTRIBUTES);
82867ecf
GS
3207 WCHAR wOldName[MAX_PATH+1];
3208 WCHAR wNewName[MAX_PATH+1];
6b980173
JD
3209
3210 if (IsWin95())
1be9d9c6 3211 Perl_croak(aTHX_ PL_no_func, "link");
6b980173
JD
3212
3213 pfnCreateHardLinkW =
3214 (BOOL (__stdcall *)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES))
3215 GetProcAddress(GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
3216 if (pfnCreateHardLinkW == NULL)
3217 pfnCreateHardLinkW = Nt4CreateHardLinkW;
3218
8c56068e
JD
3219 if (MultiByteToWideChar(CP_ACP, 0, oldname, -1, wOldName, MAX_PATH+1) &&
3220 MultiByteToWideChar(CP_ACP, 0, newname, -1, wNewName, MAX_PATH+1) &&
7766f137 3221 (wcscpy(wOldName, PerlDir_mapW(wOldName)),
8c56068e 3222 pfnCreateHardLinkW(PerlDir_mapW(wNewName), wOldName, NULL)))
6b980173
JD
3223 {
3224 return 0;
3225 }
3226 errno = (GetLastError() == ERROR_FILE_NOT_FOUND) ? ENOENT : EINVAL;
3227 return -1;
3228}
0a753a76 3229
68dc0745 3230DllExport int
8d9b2e3c 3231win32_rename(const char *oname, const char *newname)
e24c7c18 3232{
65cb15a1
GS
3233 char szOldName[MAX_PATH+1];
3234 char szNewName[MAX_PATH+1];
7fac1903 3235 BOOL bResult;
acfe0abc 3236 dTHX;
65cb15a1 3237
80252599
GS
3238 /* XXX despite what the documentation says about MoveFileEx(),
3239 * it doesn't work under Windows95!
3240 */
3241 if (IsWinNT()) {
65cb15a1 3242 DWORD dwFlags = MOVEFILE_COPY_ALLOWED;
8c56068e
JD
3243 if (stricmp(newname, oname))
3244 dwFlags |= MOVEFILE_REPLACE_EXISTING;
3245 strcpy(szOldName, PerlDir_mapA(oname));
3246 bResult = MoveFileExA(szOldName,PerlDir_mapA(newname), dwFlags);
7fac1903 3247 if (!bResult) {
80252599
GS
3248 DWORD err = GetLastError();
3249 switch (err) {
3250 case ERROR_BAD_NET_NAME:
3251 case ERROR_BAD_NETPATH:
3252 case ERROR_BAD_PATHNAME:
3253 case ERROR_FILE_NOT_FOUND:
3254 case ERROR_FILENAME_EXCED_RANGE:
3255 case ERROR_INVALID_DRIVE:
3256 case ERROR_NO_MORE_FILES:
3257 case ERROR_PATH_NOT_FOUND:
3258 errno = ENOENT;
3259 break;
3260 default:
3261 errno = EACCES;
3262 break;
3263 }
3264 return -1;
3265 }
3266 return 0;
e24c7c18 3267 }
80252599
GS
3268 else {
3269 int retval = 0;
65cb15a1 3270 char szTmpName[MAX_PATH+1];
80252599
GS
3271 char dname[MAX_PATH+1];
3272 char *endname = Nullch;
3273 STRLEN tmplen = 0;
3274 DWORD from_attr, to_attr;
3275
65cb15a1
GS
3276 strcpy(szOldName, PerlDir_mapA(oname));
3277 strcpy(szNewName, PerlDir_mapA(newname));
3278
80252599 3279 /* if oname doesn't exist, do nothing */
65cb15a1 3280 from_attr = GetFileAttributes(szOldName);
80252599
GS
3281 if (from_attr == 0xFFFFFFFF) {
3282 errno = ENOENT;
3283 return -1;
3284 }
3285
3286 /* if newname exists, rename it to a temporary name so that we
3287 * don't delete it in case oname happens to be the same file
3288 * (but perhaps accessed via a different path)
3289 */
65cb15a1 3290 to_attr = GetFileAttributes(szNewName);
80252599
GS
3291 if (to_attr != 0xFFFFFFFF) {
3292 /* if newname is a directory, we fail
3293 * XXX could overcome this with yet more convoluted logic */
3294 if (to_attr & FILE_ATTRIBUTE_DIRECTORY) {
3295 errno = EACCES;
3296 return -1;
3297 }
65cb15a1
GS
3298 tmplen = strlen(szNewName);
3299 strcpy(szTmpName,szNewName);
3300 endname = szTmpName+tmplen;
3301 for (; endname > szTmpName ; --endname) {
80252599
GS
3302 if (*endname == '/' || *endname == '\\') {
3303 *endname = '\0';
3304 break;
3305 }
3306 }
65cb15a1
GS
3307 if (endname > szTmpName)
3308 endname = strcpy(dname,szTmpName);
e24c7c18 3309 else
80252599
GS
3310 endname = ".";
3311
3312 /* get a temporary filename in same directory
3313 * XXX is this really the best we can do? */
65cb15a1 3314 if (!GetTempFileName((LPCTSTR)endname, "plr", 0, szTmpName)) {
80252599
GS
3315 errno = ENOENT;
3316 return -1;
3317 }
65cb15a1 3318 DeleteFile(szTmpName);
80252599 3319
65cb15a1 3320 retval = rename(szNewName, szTmpName);
80252599
GS
3321 if (retval != 0) {
3322 errno = EACCES;
3323 return retval;
e24c7c18
GS
3324 }
3325 }
80252599
GS
3326
3327 /* rename oname to newname */
65cb15a1 3328 retval = rename(szOldName, szNewName);
80252599
GS
3329
3330 /* if we created a temporary file before ... */
3331 if (endname != Nullch) {
3332 /* ...and rename succeeded, delete temporary file/directory */
3333 if (retval == 0)
65cb15a1 3334 DeleteFile(szTmpName);
80252599
GS
3335 /* else restore it to what it was */
3336 else
65cb15a1 3337 (void)rename(szTmpName, szNewName);
80252599
GS
3338 }
3339 return retval;
e24c7c18 3340 }
e24c7c18
GS
3341}
3342
3343DllExport int
68dc0745 3344win32_setmode(int fd, int mode)
0a753a76 3345{
390b85e7 3346 return setmode(fd, mode);
0a753a76
PP
3347}
3348
4a9d6100
GS
3349DllExport int
3350win32_chsize(int fd, Off_t size)
3351{
3352#if defined(WIN64) || defined(USE_LARGE_FILES)
3353 int retval = 0;
3354 Off_t cur, end, extend;
3355
3356 cur = win32_tell(fd);
3357 if (cur < 0)
3358 return -1;
3359 end = win32_lseek(fd, 0, SEEK_END);
3360 if (end < 0)
3361 return -1;
3362 extend = size - end;
3363 if (extend == 0) {
3364 /* do nothing */
3365 }
3366 else if (extend > 0) {
3367 /* must grow the file, padding with nulls */
3368 char b[4096];
3369 int oldmode = win32_setmode(fd, O_BINARY);
3370 size_t count;
3371 memset(b, '\0', sizeof(b));
3372 do {
3373 count = extend >= sizeof(b) ? sizeof(b) : (size_t)extend;
3374 count = win32_write(fd, b, count);
21424390 3375 if ((int)count < 0) {
4a9d6100
GS
3376 retval = -1;
3377 break;
3378 }
3379 } while ((extend -= count) > 0);
3380 win32_setmode(fd, oldmode);
3381 }
3382 else {
3383 /* shrink the file */
3384 win32_lseek(fd, size, SEEK_SET);
3385 if (!SetEndOfFile((HANDLE)_get_osfhandle(fd))) {
3386 errno = EACCES;
3387 retval = -1;
3388 }
3389 }
3390finish:
3391 win32_lseek(fd, cur, SEEK_SET);
3392 return retval;
3393#else
8859a7a0 3394 return chsize(fd, (long)size);
4a9d6100
GS
3395#endif
3396}
3397
c623ac67
GS
3398DllExport Off_t
3399win32_lseek(int fd, Off_t offset, int origin)
96e4d5b1 3400{
c623ac67 3401#if defined(WIN64) || defined(USE_LARGE_FILES)
a810272a
NS
3402#if defined(__BORLANDC__) /* buk */
3403 LARGE_INTEGER pos;
3404 pos.QuadPart = offset;
3405 pos.LowPart = SetFilePointer(
3406 (HANDLE)_get_osfhandle(fd),
3407 pos.LowPart,
3408 &pos.HighPart,
3409 origin
3410 );
3411 if (pos.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
3412 pos.QuadPart = -1;
3413 }
3414
3415 return pos.QuadPart;
3416#else
c623ac67 3417 return _lseeki64(fd, offset, origin);
a810272a 3418#endif
c623ac67 3419#else
8859a7a0 3420 return lseek(fd, (long)offset, origin);
c623ac67 3421#endif
96e4d5b1
PP
3422}
3423
c623ac67 3424DllExport Off_t
96e4d5b1
PP
3425win32_tell(int fd)
3426{
c623ac67 3427#if defined(WIN64) || defined(USE_LARGE_FILES)
05e23382 3428#if defined(__BORLANDC__) /* buk */
a810272a
NS
3429 LARGE_INTEGER pos;
3430 pos.QuadPart = 0;
3431 pos.LowPart = SetFilePointer(
3432 (HANDLE)_get_osfhandle(fd),
3433 pos.LowPart,
3434 &pos.HighPart,
3435 FILE_CURRENT
3436 );
3437 if (pos.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
3438 pos.QuadPart = -1;
3439 }
3440
3441 return pos.QuadPart;
3442 /* return tell(fd); */
3443#else
c623ac67 3444 return _telli64(fd);
a810272a 3445#endif
c623ac67 3446#else
390b85e7 3447 return tell(fd);
c623ac67 3448#endif
96e4d5b1
PP
3449}
3450
68dc0745
PP
3451DllExport int
3452win32_open(const char *path, int flag, ...)
0a753a76 3453{
acfe0abc 3454 dTHX;
68dc0745
PP
3455 va_list ap;
3456 int pmode;
0a753a76
PP
3457
3458 va_start(ap, flag);
3459 pmode = va_arg(ap, int);
3460 va_end(ap);
3461
68dc0745 3462 if (stricmp(path, "/dev/null")==0)
7fac1903
GS
3463 path = "NUL";
3464
7766f137 3465 return open(PerlDir_mapA(path), flag, pmode);
0a753a76
PP
3466}
3467
00b02797
JH
3468/* close() that understands socket */
3469extern int my_close(int); /* in win32sck.c */
3470
68dc0745
PP
3471DllExport int
3472win32_close(int fd)
0a753a76 3473{
00b02797 3474 return my_close(fd);
0a753a76
PP
3475}
3476
68dc0745 3477DllExport int
96e4d5b1
PP
3478win32_eof(int fd)
3479{
390b85e7 3480 return eof(fd);
96e4d5b1
PP
3481}
3482
3483DllExport int
68dc0745 3484win32_dup(int fd)
0a753a76 3485{
390b85e7 3486 return dup(fd);
0a753a76
PP
3487}
3488
68dc0745
PP
3489DllExport int
3490win32_dup2(int fd1,int fd2)
0a753a76 3491{
390b85e7 3492 return dup2(fd1,fd2);
0a753a76
PP
3493}
3494
f7aeb604
GS
3495#ifdef PERL_MSVCRT_READFIX
3496
3497#define LF 10 /* line feed */
3498#define CR 13 /* carriage return */
3499#define CTRLZ 26 /* ctrl-z means eof for text */
3500#define FOPEN 0x01 /* file handle open */
3501#define FEOFLAG 0x02 /* end of file has been encountered */
3502#define FCRLF 0x04 /* CR-LF across read buffer (in text mode) */
3503#define FPIPE 0x08 /* file handle refers to a pipe */
3504#define FAPPEND 0x20 /* file handle opened O_APPEND */
3505#define FDEV 0x40 /* file handle refers to device */
3506#define FTEXT 0x80 /* file handle is in text mode */
3507#define MAX_DESCRIPTOR_COUNT (64*32) /* this is the maximun that MSVCRT can handle */
3508
b181b6fb
GS
3509int __cdecl
3510_fixed_read(int fh, void *buf, unsigned cnt)
f7aeb604
GS
3511{
3512 int bytes_read; /* number of bytes read */
3513 char *buffer; /* buffer to read to */
3514 int os_read; /* bytes read on OS call */
3515 char *p, *q; /* pointers into buffer */
3516 char peekchr; /* peek-ahead character */
3517 ULONG filepos; /* file position after seek */
3518 ULONG dosretval; /* o.s. return value */
3519
3520 /* validate handle */
3521 if (((unsigned)fh >= (unsigned)MAX_DESCRIPTOR_COUNT) ||
3522 !(_osfile(fh) & FOPEN))
3523 {
3524 /* out of range -- return error */
3525 errno = EBADF;
3526 _doserrno = 0; /* not o.s. error */
3527 return -1;
3528 }
3529
635bbe87
GS
3530 /*
3531 * If lockinitflag is FALSE, assume fd is device
3532 * lockinitflag is set to TRUE by open.
3533 */
3534 if (_pioinfo(fh)->lockinitflag)
3535 EnterCriticalSection(&(_pioinfo(fh)->lock)); /* lock file */
f7aeb604
GS
3536
3537 bytes_read = 0; /* nothing read yet */
3538 buffer = (char*)buf;
3539
3540 if (cnt == 0 || (_osfile(fh) & FEOFLAG)) {
3541 /* nothing to read or at EOF, so return 0 read */
3542 goto functionexit;
3543 }
3544
3545 if ((_osfile(fh) & (FPIPE|FDEV)) && _pipech(fh) != LF) {
3546 /* a pipe/device and pipe lookahead non-empty: read the lookahead
3547 * char */
3548 *buffer++ = _pipech(fh);
3549 ++bytes_read;
3550 --cnt;
3551 _pipech(fh) = LF; /* mark as empty */
3552 }
3553
3554 /* read the data */
3555
3556 if (!ReadFile((HANDLE)_osfhnd(fh), buffer, cnt, (LPDWORD)&os_read, NULL))
3557 {
3558 /* ReadFile has reported an error. recognize two special cases.
3559 *
3560 * 1. map ERROR_ACCESS_DENIED to EBADF
3561 *
3562 * 2. just return 0 if ERROR_BROKEN_PIPE has occurred. it
3563 * means the handle is a read-handle on a pipe for which
3564 * all write-handles have been closed and all data has been
3565 * read. */
3566
3567 if ((dosretval = GetLastError()) == ERROR_ACCESS_DENIED) {
3568 /* wrong read/write mode should return EBADF, not EACCES */
3569 errno = EBADF;
3570 _doserrno = dosretval;
3571 bytes_read = -1;
3572 goto functionexit;
3573 }
3574 else if (dosretval == ERROR_BROKEN_PIPE) {
3575 bytes_read = 0;
3576 goto functionexit;
3577 }
3578 else {
3579 bytes_read = -1;
3580 goto functionexit;
3581 }
3582 }
3583
3584 bytes_read += os_read; /* update bytes read */
3585
3586 if (_osfile(fh) & FTEXT) {
3587 /* now must translate CR-LFs to LFs in the buffer */
3588
3589 /* set CRLF flag to indicate LF at beginning of buffer */
3590 /* if ((os_read != 0) && (*(char *)buf == LF)) */
3591 /* _osfile(fh) |= FCRLF; */
3592 /* else */
3593 /* _osfile(fh) &= ~FCRLF; */
3594
3595 _osfile(fh) &= ~FCRLF;
3596
3597 /* convert chars in the buffer: p is src, q is dest */
3598 p = q = (char*)buf;
3599 while (p < (char *)buf + bytes_read) {
3600 if (*p == CTRLZ) {
3601 /* if fh is not a device, set ctrl-z flag */
3602 if (!(_osfile(fh) & FDEV))
3603 _osfile(fh) |= FEOFLAG;
3604 break; /* stop translating */
3605 }
3606 else if (*p != CR)
3607 *q++ = *p++;
3608 else {
3609 /* *p is CR, so must check next char for LF */
3610 if (p < (char *)buf + bytes_read - 1) {
3611 if (*(p+1) == LF) {
3612 p += 2;
3613 *q++ = LF; /* convert CR-LF to LF */
3614 }
3615 else
3616 *q++ = *p++; /* store char normally */
3617 }
3618 else {
3619 /* This is the hard part. We found a CR at end of
3620 buffer. We must peek ahead to see if next char
3621 is an LF. */
3622 ++p;
3623
3624 dosretval = 0;
3625 if (!ReadFile((HANDLE)_osfhnd(fh), &peekchr, 1,
3626 (LPDWORD)&os_read, NULL))
3627 dosretval = GetLastError();
3628
3629 if (dosretval != 0 || os_read == 0) {
3630 /* couldn't read ahead, store CR */
3631 *q++ = CR;
3632 }
3633 else {
3634 /* peekchr now has the extra character -- we now
3635 have several possibilities:
3636 1. disk file and char is not LF; just seek back
3637 and copy CR
3638 2. disk file and char is LF; store LF, don't seek back
3639 3. pipe/device and char is LF; store LF.
3640 4. pipe/device and char isn't LF, store CR and
3641 put char in pipe lookahead buffer. */
3642 if (_osfile(fh) & (FDEV|FPIPE)) {
3643 /* non-seekable device */
3644 if (peekchr == LF)
3645 *q++ = LF;
3646 else {
3647 *q++ = CR;
3648 _pipech(fh) = peekchr;
3649 }
3650 }
3651 else {
3652 /* disk file */
3653 if (peekchr == LF) {
3654 /* nothing read yet; must make some
3655 progress */
3656 *q++ = LF;
3657 /* turn on this flag for tell routine */
3658 _osfile(fh) |= FCRLF;
3659 }
3660 else {
366