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source: kBuild/trunk/src/kash/shfile.c@ 3454

Last change on this file since 3454 was 3454, checked in by bird, 5 years ago

kash: shfile_movefd: bounds check fix.
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1/* $Id: shfile.c 3454 2020-09-14 11:58:47Z bird $ */
2/** @file
3 *
4 * File management.
5 *
6 * Copyright (c) 2007-2010 knut st. osmundsen <[email protected]>
7 *
8 *
9 * This file is part of kBuild.
10 *
11 * kBuild is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * kBuild is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with kBuild; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 */
26
27/*******************************************************************************
28* Header Files *
29*******************************************************************************/
30#include "shfile.h"
31#include "shinstance.h" /* TRACE2 */
32#include <stdlib.h>
33#include <stdio.h>
34#include <string.h>
35#include <assert.h>
36
37#if K_OS == K_OS_WINDOWS
38# include <limits.h>
39# ifndef PIPE_BUF
40# define PIPE_BUF 512
41# endif
42# include <ntstatus.h>
43# define WIN32_NO_STATUS
44# include <Windows.h>
45# if !defined(_WIN32_WINNT)
46# define _WIN32_WINNT 0x0502 /* Windows Server 2003 */
47# endif
48# include <winternl.h> //NTSTATUS
49#else
50# include <unistd.h>
51# include <fcntl.h>
52# include <dirent.h>
53#endif
54
55
56/*******************************************************************************
57* Defined Constants And Macros *
58*******************************************************************************/
59/** @def SHFILE_IN_USE
60 * Whether the file descriptor table stuff is actually in use or not.
61 */
62#if K_OS == K_OS_WINDOWS \
63 || K_OS == K_OS_OPENBSD /* because of ugly pthread library pipe hacks */ \
64 || !defined(SH_FORKED_MODE)
65# define SHFILE_IN_USE
66#endif
67/** The max file table size. */
68#define SHFILE_MAX 1024
69/** The file table growth rate. */
70#define SHFILE_GROW 64
71/** The min native unix file descriptor. */
72#define SHFILE_UNIX_MIN_FD 32
73/** The path buffer size we use. */
74#define SHFILE_MAX_PATH 4096
75
76/** Set errno and return. Doing a trace in debug build. */
77#define RETURN_ERROR(rc, err, msg) \
78 do { \
79 TRACE2((NULL, "%s: " ## msg ## " - returning %d / %d\n", __FUNCTION__, (rc), (err))); \
80 errno = (err); \
81 return (rc); \
82 } while (0)
83
84#if K_OS == K_OS_WINDOWS
85 /* See msdos.h for description. */
86# define FOPEN 0x01
87# define FEOFLAG 0x02
88# define FCRLF 0x04
89# define FPIPE 0x08
90# define FNOINHERIT 0x10
91# define FAPPEND 0x20
92# define FDEV 0x40
93# define FTEXT 0x80
94
95# define MY_ObjectBasicInformation 0
96# define MY_FileNamesInformation 12
97
98typedef struct
99{
100 ULONG Attributes;
101 ACCESS_MASK GrantedAccess;
102 ULONG HandleCount;
103 ULONG PointerCount;
104 ULONG PagedPoolUsage;
105 ULONG NonPagedPoolUsage;
106 ULONG Reserved[3];
107 ULONG NameInformationLength;
108 ULONG TypeInformationLength;
109 ULONG SecurityDescriptorLength;
110 LARGE_INTEGER CreateTime;
111} MY_OBJECT_BASIC_INFORMATION;
112
113#if 0
114typedef struct
115{
116 union
117 {
118 LONG Status;
119 PVOID Pointer;
120 };
121 ULONG_PTR Information;
122} MY_IO_STATUS_BLOCK;
123#else
124typedef IO_STATUS_BLOCK MY_IO_STATUS_BLOCK;
125#endif
126typedef MY_IO_STATUS_BLOCK *PMY_IO_STATUS_BLOCK;
127
128typedef struct
129{
130 ULONG NextEntryOffset;
131 ULONG FileIndex;
132 ULONG FileNameLength;
133 WCHAR FileName[1];
134} MY_FILE_NAMES_INFORMATION, *PMY_FILE_NAMES_INFORMATION;
135
136typedef NTSTATUS (NTAPI * PFN_NtQueryObject)(HANDLE, int, void *, size_t, size_t *);
137typedef NTSTATUS (NTAPI * PFN_NtQueryDirectoryFile)(HANDLE, HANDLE, void *, void *, PMY_IO_STATUS_BLOCK, void *,
138 ULONG, int, int, PUNICODE_STRING, int);
139typedef NTSTATUS (NTAPI * PFN_RtlUnicodeStringToAnsiString)(PANSI_STRING, PCUNICODE_STRING, int);
140
141
142#endif /* K_OS_WINDOWS */
143
144
145/*******************************************************************************
146* Global Variables *
147*******************************************************************************/
148#if K_OS == K_OS_WINDOWS
149static int g_shfile_globals_initialized = 0;
150static PFN_NtQueryObject g_pfnNtQueryObject = NULL;
151static PFN_NtQueryDirectoryFile g_pfnNtQueryDirectoryFile = NULL;
152static PFN_RtlUnicodeStringToAnsiString g_pfnRtlUnicodeStringToAnsiString = NULL;
153#endif /* K_OS_WINDOWS */
154
155
156#ifdef SHFILE_IN_USE
157
158/**
159 * Close the specified native handle.
160 *
161 * @param native The native file handle.
162 * @param flags The flags in case they might come in handy later.
163 */
164static void shfile_native_close(intptr_t native, unsigned flags)
165{
166# if K_OS == K_OS_WINDOWS
167 BOOL fRc = CloseHandle((HANDLE)native);
168 assert(fRc); (void)fRc;
169# else
170 int s = errno;
171 close(native);
172 errno = s;
173# endif
174 (void)flags;
175}
176
177/**
178 * Grows the descriptor table, making sure that it can hold @a fdMin,
179 *
180 * @returns The max(fdMin, fdFirstNew) on success, -1 on failure.
181 * @param pfdtab The table to grow.
182 * @param fdMin Grow to include this index.
183 */
184static int shfile_grow_tab_locked(shfdtab *pfdtab, int fdMin)
185{
186 /*
187 * Grow the descriptor table.
188 */
189 int fdRet = -1;
190 shfile *new_tab;
191 int new_size = pfdtab->size + SHFILE_GROW;
192 while (new_size < fdMin)
193 new_size += SHFILE_GROW;
194 new_tab = sh_realloc(shthread_get_shell(), pfdtab->tab, new_size * sizeof(shfile));
195 if (new_tab)
196 {
197 int i;
198 for (i = pfdtab->size; i < new_size; i++)
199 {
200 new_tab[i].fd = -1;
201 new_tab[i].oflags = 0;
202 new_tab[i].shflags = 0;
203 new_tab[i].native = -1;
204 }
205
206 fdRet = pfdtab->size;
207 if (fdRet < fdMin)
208 fdRet = fdMin;
209
210 pfdtab->tab = new_tab;
211 pfdtab->size = new_size;
212 }
213
214 return fdRet;
215}
216
217/**
218 * Inserts the file into the descriptor table.
219 *
220 * If we're out of memory and cannot extend the table, we'll close the
221 * file, set errno to EMFILE and return -1.
222 *
223 * @returns The file descriptor number. -1 and errno on failure.
224 * @param pfdtab The file descriptor table.
225 * @param native The native file handle.
226 * @param oflags The flags the it was opened/created with.
227 * @param shflags The shell file flags.
228 * @param fdMin The minimum file descriptor number, pass -1 if any is ok.
229 * @param who Who we're doing this for (for logging purposes).
230 */
231static int shfile_insert(shfdtab *pfdtab, intptr_t native, unsigned oflags, unsigned shflags, int fdMin, const char *who)
232{
233 shmtxtmp tmp;
234 int fd;
235 int i;
236
237 /*
238 * Fend of bad stuff.
239 */
240 if (fdMin >= SHFILE_MAX)
241 {
242 TRACE2((NULL, "shfile_insert: fdMin=%d is out of bounds; native=%p\n", fdMin, native));
243 shfile_native_close(native, oflags);
244 errno = EMFILE;
245 return -1;
246 }
247# if K_OS != K_OS_WINDOWS
248 if (fcntl((int)native, F_SETFD, fcntl((int)native, F_GETFD, 0) | FD_CLOEXEC) == -1)
249 {
250 int e = errno;
251 TRACE2((NULL, "shfile_insert: F_SETFD failed %d; native=%p\n", e, native));
252 close((int)native);
253 errno = e;
254 return -1;
255 }
256# endif
257
258 shmtx_enter(&pfdtab->mtx, &tmp);
259
260 /*
261 * Search for a fitting unused location.
262 */
263 fd = -1;
264 for (i = fdMin >= 0 ? fdMin : 0; (unsigned)i < pfdtab->size; i++)
265 if (pfdtab->tab[i].fd == -1)
266 {
267 fd = i;
268 break;
269 }
270 if (fd == -1)
271 fd = shfile_grow_tab_locked(pfdtab, fdMin);
272
273 /*
274 * Fill in the entry if we've found one.
275 */
276 if (fd != -1)
277 {
278 pfdtab->tab[fd].fd = fd;
279 pfdtab->tab[fd].oflags = oflags;
280 pfdtab->tab[fd].shflags = shflags;
281 pfdtab->tab[fd].native = native;
282 TRACE2((NULL, "shfile_insert: #%d: native=%p oflags=%#x shflags=%#x\n", fd, native, oflags, shflags));
283 }
284 else
285 shfile_native_close(native, oflags);
286
287 shmtx_leave(&pfdtab->mtx, &tmp);
288
289 if (fd == -1)
290 errno = EMFILE;
291 (void)who;
292 return fd;
293}
294
295# if K_OS != K_OS_WINDOWS
296/**
297 * Makes a copy of the native file, closes the original, and inserts the copy
298 * into the descriptor table.
299 *
300 * If we're out of memory and cannot extend the table, we'll close the
301 * file, set errno to EMFILE and return -1.
302 *
303 * @returns The file descriptor number. -1 and errno on failure.
304 * @param pfdtab The file descriptor table.
305 * @param pnative The native file handle on input, -1 on output.
306 * @param oflags The flags the it was opened/created with.
307 * @param shflags The shell file flags.
308 * @param fdMin The minimum file descriptor number, pass -1 if any is ok.
309 * @param who Who we're doing this for (for logging purposes).
310 */
311static int shfile_copy_insert_and_close(shfdtab *pfdtab, int *pnative, unsigned oflags, unsigned shflags, int fdMin, const char *who)
312{
313 int fd = -1;
314 int s = errno;
315 int native_copy = fcntl(*pnative, F_DUPFD, SHFILE_UNIX_MIN_FD);
316 close(*pnative);
317 *pnative = -1;
318 errno = s;
319
320 if (native_copy != -1)
321 fd = shfile_insert(pfdtab, native_copy, oflags, shflags, fdMin, who);
322 return fd;
323}
324# endif /* !K_OS_WINDOWS */
325
326/**
327 * Gets a file descriptor and lock the file descriptor table.
328 *
329 * @returns Pointer to the file and table ownership on success,
330 * NULL and errno set to EBADF on failure.
331 * @param pfdtab The file descriptor table.
332 * @param fd The file descriptor number.
333 * @param ptmp See shmtx_enter.
334 */
335static shfile *shfile_get(shfdtab *pfdtab, int fd, shmtxtmp *ptmp)
336{
337 shfile *file = NULL;
338 if ( fd >= 0
339 && (unsigned)fd < pfdtab->size)
340 {
341 shmtx_enter(&pfdtab->mtx, ptmp);
342 if ((unsigned)fd < pfdtab->size
343 && pfdtab->tab[fd].fd != -1)
344 file = &pfdtab->tab[fd];
345 else
346 shmtx_leave(&pfdtab->mtx, ptmp);
347 }
348 if (!file)
349 errno = EBADF;
350 return file;
351}
352
353/**
354 * Puts back a file descriptor and releases the table ownership.
355 *
356 * @param pfdtab The file descriptor table.
357 * @param file The file.
358 * @param ptmp See shmtx_leave.
359 */
360static void shfile_put(shfdtab *pfdtab, shfile *file, shmtxtmp *ptmp)
361{
362 shmtx_leave(&pfdtab->mtx, ptmp);
363 assert(file);
364 (void)file;
365}
366
367/**
368 * Constructs a path from the current directory and the passed in path.
369 *
370 * @returns 0 on success, -1 and errno set to ENAMETOOLONG or EINVAL on failure.
371 *
372 * @param pfdtab The file descriptor table
373 * @param path The path the caller supplied.
374 * @param buf Where to put the path. This is assumed to be SHFILE_MAX_PATH
375 * chars in size.
376 */
377int shfile_make_path(shfdtab *pfdtab, const char *path, char *buf)
378{
379 size_t path_len = strlen(path);
380 if (path_len == 0)
381 {
382 errno = EINVAL;
383 return -1;
384 }
385 if (path_len >= SHFILE_MAX_PATH)
386 {
387 errno = ENAMETOOLONG;
388 return -1;
389 }
390 if ( *path == '/'
391# if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
392 || *path == '\\'
393 || ( *path
394 && path[1] == ':'
395 && ( (*path >= 'A' && *path <= 'Z')
396 || (*path >= 'a' && *path <= 'z')))
397# endif
398 )
399 {
400 memcpy(buf, path, path_len + 1);
401 }
402 else
403 {
404 size_t cwd_len;
405 shmtxtmp tmp;
406
407 shmtx_enter(&pfdtab->mtx, &tmp);
408
409 cwd_len = strlen(pfdtab->cwd);
410 memcpy(buf, pfdtab->cwd, cwd_len);
411
412 shmtx_leave(&pfdtab->mtx, &tmp);
413
414 if (cwd_len + path_len + 1 >= SHFILE_MAX_PATH)
415 {
416 errno = ENAMETOOLONG;
417 return -1;
418 }
419 if ( !cwd_len
420 || buf[cwd_len - 1] != '/')
421 buf[cwd_len++] = '/';
422 memcpy(buf + cwd_len, path, path_len + 1);
423 }
424
425# if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
426 if (!strcmp(buf, "/dev/null"))
427 strcpy(buf, "NUL");
428# endif
429 return 0;
430}
431
432# if K_OS == K_OS_WINDOWS
433
434/**
435 * Adjusts the file name if it ends with a trailing directory slash.
436 *
437 * Windows APIs doesn't like trailing slashes.
438 *
439 * @returns 1 if it has a directory slash, 0 if not.
440 *
441 * @param abspath The path to adjust (SHFILE_MAX_PATH).
442 */
443static int shfile_trailing_slash_hack(char *abspath)
444{
445 /*
446 * Anything worth adjust here?
447 */
448 size_t path_len = strlen(abspath);
449 if ( path_len == 0
450 || ( abspath[path_len - 1] != '/'
451# if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
452 && abspath[path_len - 1] != '\\'
453# endif
454 )
455 )
456 return 0;
457
458 /*
459 * Ok, make the adjustment.
460 */
461 if (path_len + 2 <= SHFILE_MAX_PATH)
462 {
463 /* Add a '.' to the end. */
464 abspath[path_len++] = '.';
465 abspath[path_len] = '\0';
466 }
467 else
468 {
469 /* No space for a dot, remove the slash if it's alone or just remove
470 one and add a dot like above. */
471 if ( abspath[path_len - 2] != '/'
472# if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
473 && abspath[path_len - 2] != '\\'
474# endif
475 )
476 abspath[--path_len] = '\0';
477 else
478 abspath[path_len - 1] = '.';
479 }
480
481 return 1;
482}
483
484
485/**
486 * Converts a DOS(/Windows) error code to errno,
487 * assigning it to errno.
488 *
489 * @returns -1
490 * @param err The DOS error.
491 */
492static int shfile_dos2errno(int err)
493{
494 switch (err)
495 {
496 case ERROR_BAD_ENVIRONMENT: errno = E2BIG; break;
497 case ERROR_ACCESS_DENIED: errno = EACCES; break;
498 case ERROR_CURRENT_DIRECTORY: errno = EACCES; break;
499 case ERROR_LOCK_VIOLATION: errno = EACCES; break;
500 case ERROR_NETWORK_ACCESS_DENIED: errno = EACCES; break;
501 case ERROR_CANNOT_MAKE: errno = EACCES; break;
502 case ERROR_FAIL_I24: errno = EACCES; break;
503 case ERROR_DRIVE_LOCKED: errno = EACCES; break;
504 case ERROR_SEEK_ON_DEVICE: errno = EACCES; break;
505 case ERROR_NOT_LOCKED: errno = EACCES; break;
506 case ERROR_LOCK_FAILED: errno = EACCES; break;
507 case ERROR_NO_PROC_SLOTS: errno = EAGAIN; break;
508 case ERROR_MAX_THRDS_REACHED: errno = EAGAIN; break;
509 case ERROR_NESTING_NOT_ALLOWED: errno = EAGAIN; break;
510 case ERROR_INVALID_HANDLE: errno = EBADF; break;
511 case ERROR_INVALID_TARGET_HANDLE: errno = EBADF; break;
512 case ERROR_DIRECT_ACCESS_HANDLE: errno = EBADF; break;
513 case ERROR_WAIT_NO_CHILDREN: errno = ECHILD; break;
514 case ERROR_CHILD_NOT_COMPLETE: errno = ECHILD; break;
515 case ERROR_FILE_EXISTS: errno = EEXIST; break;
516 case ERROR_ALREADY_EXISTS: errno = EEXIST; break;
517 case ERROR_INVALID_FUNCTION: errno = EINVAL; break;
518 case ERROR_INVALID_ACCESS: errno = EINVAL; break;
519 case ERROR_INVALID_DATA: errno = EINVAL; break;
520 case ERROR_INVALID_PARAMETER: errno = EINVAL; break;
521 case ERROR_NEGATIVE_SEEK: errno = EINVAL; break;
522 case ERROR_TOO_MANY_OPEN_FILES: errno = EMFILE; break;
523 case ERROR_FILE_NOT_FOUND: errno = ENOENT; break;
524 case ERROR_PATH_NOT_FOUND: errno = ENOENT; break;
525 case ERROR_INVALID_DRIVE: errno = ENOENT; break;
526 case ERROR_NO_MORE_FILES: errno = ENOENT; break;
527 case ERROR_BAD_NETPATH: errno = ENOENT; break;
528 case ERROR_BAD_NET_NAME: errno = ENOENT; break;
529 case ERROR_BAD_PATHNAME: errno = ENOENT; break;
530 case ERROR_FILENAME_EXCED_RANGE: errno = ENOENT; break;
531 case ERROR_BAD_FORMAT: errno = ENOEXEC; break;
532 case ERROR_ARENA_TRASHED: errno = ENOMEM; break;
533 case ERROR_NOT_ENOUGH_MEMORY: errno = ENOMEM; break;
534 case ERROR_INVALID_BLOCK: errno = ENOMEM; break;
535 case ERROR_NOT_ENOUGH_QUOTA: errno = ENOMEM; break;
536 case ERROR_DISK_FULL: errno = ENOSPC; break;
537 case ERROR_DIR_NOT_EMPTY: errno = ENOTEMPTY; break;
538 case ERROR_BROKEN_PIPE: errno = EPIPE; break;
539 case ERROR_NOT_SAME_DEVICE: errno = EXDEV; break;
540 default: errno = EINVAL; break;
541 }
542 return -1;
543}
544
545/**
546 * Converts an NT status code to errno,
547 * assigning it to errno.
548 *
549 * @returns -1
550 * @param rcNt The NT status code.
551 */
552static int shfile_nt2errno(NTSTATUS rcNt)
553{
554 switch (rcNt)
555 {
556 default: errno = EINVAL; break;
557 }
558 return -1;
559}
560
561DWORD shfile_query_handle_access_mask(HANDLE h, PACCESS_MASK pMask)
562{
563 MY_OBJECT_BASIC_INFORMATION BasicInfo;
564 NTSTATUS rcNt;
565
566 if (!g_pfnNtQueryObject)
567 return ERROR_NOT_SUPPORTED;
568
569 rcNt = g_pfnNtQueryObject(h, MY_ObjectBasicInformation, &BasicInfo, sizeof(BasicInfo), NULL);
570 if (rcNt >= 0)
571 {
572 *pMask = BasicInfo.GrantedAccess;
573 return NO_ERROR;
574 }
575 if (rcNt != STATUS_INVALID_HANDLE)
576 return ERROR_GEN_FAILURE;
577 return ERROR_INVALID_HANDLE;
578}
579
580# endif /* K_OS == K_OS_WINDOWS */
581
582#endif /* SHFILE_IN_USE */
583
584/**
585 * Converts DOS slashes to UNIX slashes if necessary.
586 *
587 * @param pszPath The path to fix.
588 */
589K_INLINE void shfile_fix_slashes(char *pszPath)
590{
591#if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
592 while ((pszPath = strchr(pszPath, '\\')))
593 *pszPath++ = '/';
594#else
595 (void)pszPath;
596#endif
597}
598
599/**
600 * Initializes the global variables in this file.
601 */
602static void shfile_init_globals(void)
603{
604#if K_OS == K_OS_WINDOWS
605 if (!g_shfile_globals_initialized)
606 {
607 HMODULE hNtDll = GetModuleHandle("NTDLL");
608 g_pfnNtQueryObject = (PFN_NtQueryObject) GetProcAddress(hNtDll, "NtQueryObject");
609 g_pfnNtQueryDirectoryFile = (PFN_NtQueryDirectoryFile)GetProcAddress(hNtDll, "NtQueryDirectoryFile");
610 g_pfnRtlUnicodeStringToAnsiString = (PFN_RtlUnicodeStringToAnsiString)GetProcAddress(hNtDll, "RtlUnicodeStringToAnsiString");
611 if ( !g_pfnRtlUnicodeStringToAnsiString
612 || !g_pfnNtQueryDirectoryFile)
613 {
614 /* fatal error */
615 }
616 g_shfile_globals_initialized = 1;
617 }
618#endif
619}
620
621/**
622 * Initializes a file descriptor table.
623 *
624 * @returns 0 on success, -1 and errno on failure.
625 * @param pfdtab The table to initialize.
626 * @param inherit File descriptor table to inherit from. If not specified
627 * we will inherit from the current process as it were.
628 */
629int shfile_init(shfdtab *pfdtab, shfdtab *inherit)
630{
631 int rc;
632
633 shfile_init_globals();
634
635 pfdtab->cwd = NULL;
636 pfdtab->size = 0;
637 pfdtab->tab = NULL;
638 rc = shmtx_init(&pfdtab->mtx);
639 if (!rc)
640 {
641#ifdef SHFILE_IN_USE
642 /* Get CWD with unix slashes. */
643 if (!inherit)
644 {
645 char buf[SHFILE_MAX_PATH];
646 if (getcwd(buf, sizeof(buf)))
647 {
648 shfile_fix_slashes(buf);
649 pfdtab->cwd = sh_strdup(NULL, buf);
650 }
651 if (pfdtab->cwd)
652 {
653# if K_OS == K_OS_WINDOWS
654 static const struct
655 {
656 DWORD dwStdHandle;
657 unsigned fFlags;
658 } aStdHandles[3] =
659 {
660 { STD_INPUT_HANDLE, _O_RDONLY },
661 { STD_OUTPUT_HANDLE, _O_WRONLY },
662 { STD_ERROR_HANDLE, _O_WRONLY }
663 };
664 int i;
665 STARTUPINFO Info;
666 ACCESS_MASK Mask;
667 DWORD dwErr;
668
669 rc = 0;
670
671 /* Try pick up the Visual C++ CRT file descriptor info. */
672 __try {
673 GetStartupInfo(&Info);
674 } __except (EXCEPTION_EXECUTE_HANDLER) {
675 memset(&Info, 0, sizeof(Info));
676 }
677
678 if ( Info.cbReserved2 > sizeof(int)
679 && (uintptr_t)Info.lpReserved2 >= 0x1000
680 && (i = *(int *)Info.lpReserved2) >= 1
681 && i <= 2048
682 && ( Info.cbReserved2 == i * 5 + 4
683 //|| Info.cbReserved2 == i * 5 + 1 - check the cygwin sources.
684 || Info.cbReserved2 == i * 9 + 4))
685 {
686 uint8_t *paf = (uint8_t *)Info.lpReserved2 + sizeof(int);
687 int dwPerH = 1 + (Info.cbReserved2 == i * 9 + 4);
688 DWORD *ph = (DWORD *)(paf + i) + dwPerH * i;
689 HANDLE aStdHandles2[3];
690 int j;
691
692 //if (Info.cbReserved2 == i * 5 + 1) - check the cygwin sources.
693 // i--;
694
695 for (j = 0; j < 3; j++)
696 aStdHandles2[j] = GetStdHandle(aStdHandles[j].dwStdHandle);
697
698 while (i-- > 0)
699 {
700 ph -= dwPerH;
701
702 if ( (paf[i] & (FOPEN | FNOINHERIT)) == FOPEN
703 && *ph != (uint32_t)INVALID_HANDLE_VALUE)
704 {
705 HANDLE h = (HANDLE)(intptr_t)*ph;
706 int fd2;
707 int fFlags;
708 int fFlags2;
709
710 if ( h == aStdHandles2[j = 0]
711 || h == aStdHandles2[j = 1]
712 || h == aStdHandles2[j = 2])
713 fFlags = aStdHandles[j].fFlags;
714 else
715 {
716 dwErr = shfile_query_handle_access_mask(h, &Mask);
717 if (dwErr == ERROR_INVALID_HANDLE)
718 continue;
719 else if (dwErr == NO_ERROR)
720 {
721 fFlags = 0;
722 if ( (Mask & (GENERIC_READ | FILE_READ_DATA))
723 && (Mask & (GENERIC_WRITE | FILE_WRITE_DATA | FILE_APPEND_DATA)))
724 fFlags |= O_RDWR;
725 else if (Mask & (GENERIC_READ | FILE_READ_DATA))
726 fFlags |= O_RDONLY;
727 else if (Mask & (GENERIC_WRITE | FILE_WRITE_DATA | FILE_APPEND_DATA))
728 fFlags |= O_WRONLY;
729 else
730 fFlags |= O_RDWR;
731 if ((Mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) == FILE_APPEND_DATA)
732 fFlags |= O_APPEND;
733 }
734 else
735 fFlags = O_RDWR;
736 }
737
738 if (paf[i] & FPIPE)
739 fFlags2 = SHFILE_FLAGS_PIPE;
740 else if (paf[i] & FDEV)
741 fFlags2 = SHFILE_FLAGS_TTY;
742 else
743 fFlags2 = 0;
744
745 fd2 = shfile_insert(pfdtab, (intptr_t)h, fFlags, fFlags2, i, "shtab_init");
746 assert(fd2 == i); (void)fd2;
747 if (fd2 != i)
748 rc = -1;
749 }
750 }
751 }
752
753 /* Check the three standard handles. */
754 for (i = 0; i < 3; i++)
755 if ( (unsigned)i >= pfdtab->size
756 || pfdtab->tab[i].fd == -1)
757 {
758 HANDLE hFile = GetStdHandle(aStdHandles[i].dwStdHandle);
759 if (hFile != INVALID_HANDLE_VALUE)
760 {
761 DWORD dwType = GetFileType(hFile);
762 unsigned fFlags = aStdHandles[i].fFlags;
763 unsigned fFlags2;
764 int fd2;
765 if (dwType == FILE_TYPE_CHAR)
766 fFlags2 = SHFILE_FLAGS_TTY;
767 else if (dwType == FILE_TYPE_PIPE)
768 fFlags2 = SHFILE_FLAGS_PIPE;
769 else
770 fFlags2 = SHFILE_FLAGS_FILE;
771 fd2 = shfile_insert(pfdtab, (intptr_t)hFile, fFlags, fFlags2, i, "shtab_init");
772 assert(fd2 == i); (void)fd2;
773 if (fd2 != i)
774 rc = -1;
775 }
776 }
777# else
778 /*
779 * Annoying...
780 */
781 int fd;
782
783 for (fd = 0; fd < 10; fd++)
784 {
785 int oflags = fcntl(fd, F_GETFL, 0);
786 if (oflags != -1)
787 {
788 int cox = fcntl(fd, F_GETFD, 0);
789 struct stat st;
790 if ( cox != -1
791 && fstat(fd, &st) != -1)
792 {
793 int native;
794 int fd2;
795 int fFlags2 = 0;
796 if (cox & FD_CLOEXEC)
797 fFlags2 |= SHFILE_FLAGS_CLOSE_ON_EXEC;
798 if (S_ISREG(st.st_mode))
799 fFlags2 |= SHFILE_FLAGS_FILE;
800 else if (S_ISDIR(st.st_mode))
801 fFlags2 |= SHFILE_FLAGS_DIR;
802 else if (S_ISCHR(st.st_mode))
803 fFlags2 |= SHFILE_FLAGS_TTY;
804 else if (S_ISFIFO(st.st_mode))
805 fFlags2 |= SHFILE_FLAGS_PIPE;
806 else
807 fFlags2 |= SHFILE_FLAGS_TTY;
808
809 native = fcntl(fd, F_DUPFD, SHFILE_UNIX_MIN_FD);
810 if (native == -1)
811 native = fd;
812 fd2 = shfile_insert(pfdtab, native, oflags, fFlags2, fd, "shtab_init");
813 assert(fd2 == fd); (void)fd2;
814 if (fd2 != fd)
815 rc = -1;
816 if (native != fd)
817 close(fd);
818 }
819 }
820 }
821
822# endif
823 }
824 else
825 rc = -1;
826 }
827 else
828 {
829 /*
830 * Inherit from parent shell's file table.
831 */
832 shfile const *src;
833 shfile *dst;
834 shmtxtmp tmp;
835 unsigned fdcount;
836 unsigned fd;
837
838 shmtx_enter(&inherit->mtx, &tmp);
839
840 /* allocate table and cwd: */
841 fdcount = inherit->size;
842 pfdtab->tab = dst = (shfile *)(fdcount ? sh_calloc(NULL, sizeof(pfdtab->tab[0]), fdcount) : NULL);
843 pfdtab->cwd = sh_strdup(NULL, inherit->cwd);
844 if ( pfdtab->cwd
845 && (pfdtab->tab || fdcount == 0))
846 {
847 /* duplicate table entries: */
848 for (fd = 0, src = inherit->tab; fd < fdcount; fd++, src++, dst++)
849 if (src->fd == -1)
850 dst->native = dst->fd = -1;
851 else
852 {
853# if K_OS == K_OS_WINDOWS
854# ifdef SH_FORKED_MODE
855 KBOOL const cox = !!(src->shflags & SHFILE_FLAGS_CLOSE_ON_EXEC);
856# else
857 KBOOL const cox = K_TRUE;
858# endif
859# endif
860 *dst = *src;
861# if K_OS == K_OS_WINDOWS
862 if (DuplicateHandle(GetCurrentProcess(),
863 (HANDLE)src->native,
864 GetCurrentProcess(),
865 (HANDLE *)&dst->native,
866 0,
867 FALSE /* bInheritHandle */,
868 DUPLICATE_SAME_ACCESS))
869 TRACE2((NULL, "shfile_init: %d (%#x, %#x) %p (was %p)\n",
870 dst->fd, dst->oflags, dst->shflags, dst->native, src->native));
871 else
872 {
873 dst->native = (intptr_t)INVALID_HANDLE_VALUE;
874 rc = shfile_dos2errno(GetLastError());
875 TRACE2((NULL, "shfile_init: %d (%#x, %#x) %p - failed %d / %u!\n",
876 dst->fd, dst->oflags, dst->shflags, src->native, rc, GetLastError()));
877 break;
878 }
879
880# elif K_OS == K_OS_LINUX /* 2.6.27 / glibc 2.9 */ || K_OS == K_OS_FREEBSD /* 10.0 */ || K_OS == K_OS_NETBSD /* 6.0 */
881 dst->native = dup3(src->native, -1, cox ? O_CLOEXEC : 0);
882# else
883 if (cox)
884 {
885# ifndef SH_FORKED_MODE
886 shmtxtmp tmp2;
887 shmtx_enter(&global_exec_something, &tmp)
888# endif
889 dst->native = dup2(src->native, -1);
890 if (dst->native >= 0)
891 rc = fcntl(dst->native, F_SETFD, FD_CLOEXEC);
892# ifndef SH_FORKED_MODE
893 shmtx_leave(&global_exec_something, &tmp)
894# endif
895 if (rc != 0)
896 break;
897 }
898 else
899 dst->native = dup2(src->native, -1);
900 if (dst->native < 0)
901 {
902 rc = -1;
903 break;
904 }
905# endif
906 }
907 }
908 else
909 rc = -1;
910 pfdtab->size = fd;
911 shmtx_leave(&inherit->mtx, &tmp);
912 } /* inherit != NULL */
913#endif
914 }
915 return rc;
916}
917
918/**
919 * Deletes the file descriptor table.
920 *
921 * Safe to call more than once.
922 */
923void shfile_uninit(shfdtab *pfdtab)
924{
925 if (!pfdtab)
926 return;
927
928 if (pfdtab->tab)
929 {
930 unsigned left = pfdtab->size;
931 struct shfile *pfd = pfdtab->tab;
932 while (left-- > 0)
933 {
934 if (pfd->fd != -1)
935 {
936#if K_OS == K_OS_WINDOWS
937 BOOL rc = CloseHandle((HANDLE)pfd->native);
938 assert(rc == TRUE); K_NOREF(rc);
939#else
940 int rc = close((int)pfd->native);
941 assert(rc == 0); K_NOREF(rc);
942#endif
943 pfd->fd = -1;
944 pfd->native = -1;
945 }
946 pfd++;
947 }
948
949 sh_free(NULL, pfdtab->tab);
950 pfdtab->tab = NULL;
951 }
952
953 shmtx_delete(&pfdtab->mtx);
954
955 sh_free(NULL, pfdtab->cwd);
956 pfdtab->cwd = NULL;
957}
958
959#if K_OS == K_OS_WINDOWS && defined(SHFILE_IN_USE)
960
961/**
962 * Changes the inheritability of a file descriptor, taking console handles into
963 * account.
964 *
965 * @note This MAY change the native handle for the entry.
966 *
967 * @returns The native handle.
968 * @param pfd The file descriptor to change.
969 * @param set If set, make child processes inherit the handle, if clear
970 * make them not inherit it.
971 */
972static HANDLE shfile_set_inherit_win(shfile *pfd, int set)
973{
974 HANDLE hFile = (HANDLE)pfd->native;
975 if (!SetHandleInformation(hFile, HANDLE_FLAG_INHERIT, set ? HANDLE_FLAG_INHERIT : 0))
976 {
977 /* SetHandleInformation doesn't work for console handles,
978 so we have to duplicate the handle to change the
979 inheritability. */
980 DWORD err = GetLastError();
981 if ( err == ERROR_INVALID_PARAMETER
982 && DuplicateHandle(GetCurrentProcess(),
983 hFile,
984 GetCurrentProcess(),
985 &hFile,
986 0,
987 set ? TRUE : FALSE /* bInheritHandle */,
988 DUPLICATE_SAME_ACCESS))
989 {
990 TRACE2((NULL, "shfile_set_inherit_win: %p -> %p (set=%d)\n", pfd->native, hFile, set));
991 if (!CloseHandle((HANDLE)pfd->native))
992 assert(0);
993 pfd->native = (intptr_t)hFile;
994 }
995 else
996 {
997 err = GetLastError();
998 assert(0);
999 hFile = (HANDLE)pfd->native;
1000 }
1001 }
1002 return hFile;
1003}
1004
1005# ifdef SH_FORKED_MODE
1006/**
1007 * Helper for shfork.
1008 *
1009 * @param pfdtab The file descriptor table.
1010 * @param set Whether to make all handles inheritable (1) or
1011 * to restore them to the rigth state (0).
1012 * @param hndls Where to store the three standard handles.
1013 */
1014void shfile_fork_win(shfdtab *pfdtab, int set, intptr_t *hndls)
1015{
1016 shmtxtmp tmp;
1017 unsigned i;
1018
1019 shmtx_enter(&pfdtab->mtx, &tmp);
1020 TRACE2((NULL, "shfile_fork_win: set=%d\n", set));
1021
1022 i = pfdtab->size;
1023 while (i-- > 0)
1024 {
1025 if (pfdtab->tab[i].fd == i)
1026 {
1027 shfile_set_inherit_win(&pfdtab->tab[i], set);
1028 if (set)
1029 TRACE2((NULL, " #%d: native=%#x oflags=%#x shflags=%#x\n",
1030 i, pfdtab->tab[i].native, pfdtab->tab[i].oflags, pfdtab->tab[i].shflags));
1031 }
1032 }
1033
1034 if (hndls)
1035 {
1036 for (i = 0; i < 3; i++)
1037 {
1038 if ( pfdtab->size > i
1039 && pfdtab->tab[i].fd == i)
1040 hndls[i] = pfdtab->tab[i].native;
1041 else
1042 hndls[i] = (intptr_t)INVALID_HANDLE_VALUE;
1043 TRACE2((NULL, "shfile_fork_win: i=%d size=%d fd=%d native=%d hndls[%d]=%p\n",
1044 i, pfdtab->size, pfdtab->tab[i].fd, pfdtab->tab[i].native, i, hndls[i]));
1045 }
1046 }
1047
1048 shmtx_leave(&pfdtab->mtx, &tmp);
1049}
1050# endif /* SH_FORKED_MODE */
1051
1052/** shfile_exec_win helper that make sure there are no _O_APPEND handles. */
1053static KBOOL shfile_exec_win_no_append(shfdtab *pfdtab, unsigned count)
1054{
1055 unsigned i;
1056 for (i = 0; i < count; i++)
1057 if ( (pfdtab->tab[i].oflags & _O_APPEND)
1058 && (pfdtab->tab[i].oflags & (_O_WRONLY | _O_RDWR)))
1059 return K_FALSE;
1060 return K_TRUE;
1061}
1062
1063/**
1064 * Helper for sh_execve.
1065 *
1066 * This is called before and after CreateProcess. On the first call it
1067 * will mark the non-close-on-exec handles as inheritable and produce
1068 * the startup info for the CRT. On the second call, after CreateProcess,
1069 * it will restore the handle inheritability properties.
1070 *
1071 * @returns 0 on success, non-zero on failure.
1072 * @param pfdtab The file descriptor table.
1073 * @param prepare Which call, 1 if before, 0 if after and success, -1 if after on failure.
1074 * @param info The info structure.
1075 */
1076int shfile_exec_win(shfdtab *pfdtab, int prepare, shfdexecwin *info)
1077{
1078 STARTUPINFOA *strtinfo = (STARTUPINFOA *)info->strtinfo;
1079 int rc = 0;
1080 shmtxtmp tmp;
1081 unsigned count;
1082 unsigned i;
1083
1084 shmtx_enter(&pfdtab->mtx, &tmp);
1085 TRACE2((NULL, "shfile_exec_win: prepare=%p\n", prepare));
1086
1087 count = pfdtab->size < (0x10000-4) / (1 + sizeof(HANDLE))
1088 ? pfdtab->size
1089 : (0x10000-4) / (1 + sizeof(HANDLE));
1090 while ( count > 3
1091 && ( pfdtab->tab[count - 1].fd == -1
1092 || (pfdtab->tab[count - 1].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC)))
1093 count--;
1094
1095 if (prepare > 0)
1096 {
1097 if (count <= 3 && shfile_exec_win_no_append(pfdtab, count))
1098 {
1099 info->inherithandles = 0;
1100 info->startsuspended = 1;
1101 strtinfo->cbReserved2 = 0;
1102 strtinfo->lpReserved2 = NULL;
1103 }
1104 else
1105 {
1106 size_t cbData = sizeof(int) + count * (1 + sizeof(HANDLE));
1107 uint8_t *pbData = sh_malloc(shthread_get_shell(), cbData);
1108 uint8_t *paf = pbData + sizeof(int);
1109 HANDLE *pah = (HANDLE *)(paf + count);
1110
1111 info->inherithandles = 1;
1112 info->startsuspended = 0;
1113 strtinfo->cbReserved2 = (unsigned short)cbData;
1114 strtinfo->lpReserved2 = pbData;
1115
1116# ifndef SH_FORKED_MODE
1117 shmtx_leave(&pfdtab->mtx, &tmp); /* should be harmless as this isn't really necessary at all. */
1118 shmtx_enter(&g_sh_exec_inherit_mtx, &info->tmp);
1119 shmtx_enter(&pfdtab->mtx, &tmp);
1120# endif
1121
1122 *(int *)pbData = count;
1123
1124 i = count;
1125 while (i-- > 0)
1126 {
1127 if ( pfdtab->tab[i].fd == i
1128 && !(pfdtab->tab[i].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC))
1129 {
1130 HANDLE hFile = shfile_set_inherit_win(&pfdtab->tab[i], 1);
1131 TRACE2((NULL, " #%d: native=%#x oflags=%#x shflags=%#x\n",
1132 i, hFile, pfdtab->tab[i].oflags, pfdtab->tab[i].shflags));
1133 paf[i] = FOPEN;
1134 if (pfdtab->tab[i].oflags & _O_APPEND)
1135 paf[i] |= FAPPEND;
1136 if (pfdtab->tab[i].oflags & _O_TEXT)
1137 paf[i] |= FTEXT;
1138 switch (pfdtab->tab[i].shflags & SHFILE_FLAGS_TYPE_MASK)
1139 {
1140 case SHFILE_FLAGS_TTY: paf[i] |= FDEV; break;
1141 case SHFILE_FLAGS_PIPE: paf[i] |= FPIPE; break;
1142 }
1143 pah[i] = hFile;
1144 }
1145 else
1146 {
1147 paf[i] = 0;
1148 pah[i] = INVALID_HANDLE_VALUE;
1149 }
1150 }
1151 }
1152
1153 for (i = 0; i < 3; i++)
1154 {
1155 if ( i < count
1156 && pfdtab->tab[i].fd == i)
1157 {
1158 info->replacehandles[i] = 1;
1159 info->handles[i] = pfdtab->tab[i].native;
1160 }
1161 else
1162 {
1163 info->replacehandles[i] = 0;
1164 info->handles[i] = (intptr_t)INVALID_HANDLE_VALUE;
1165 }
1166 TRACE2((NULL, "shfile_exec_win: i=%d count=%d fd=%d native=%d hndls[%d]=\n",
1167 i, count, pfdtab->tab[i].fd, pfdtab->tab[i].native, i, info->handles[i]));
1168 }
1169 }
1170 else
1171 {
1172 shfile *file = pfdtab->tab;
1173
1174 sh_free(NULL, strtinfo->lpReserved2);
1175 strtinfo->lpReserved2 = NULL;
1176
1177 i = count;
1178 if (prepare == 0)
1179 for (i = 0; i < count; i++, file++)
1180 {
1181 if ( file->fd == i
1182 && !(file->shflags & SHFILE_FLAGS_TRACE))
1183 {
1184 shfile_native_close(file->native, file->oflags);
1185
1186 file->fd = -1;
1187 file->oflags = 0;
1188 file->shflags = 0;
1189 file->native = -1;
1190 }
1191 }
1192 else if (info->inherithandles)
1193 for (i = 0; i < count; i++, file++)
1194 if ( file->fd == i
1195 && !(file->shflags & SHFILE_FLAGS_CLOSE_ON_EXEC))
1196 shfile_set_inherit_win(file, 0);
1197
1198# ifndef SH_FORKED_MODE
1199 if (info->inherithandles)
1200 shmtx_leave(&g_sh_exec_inherit_mtx, &info->tmp);
1201# endif
1202 }
1203
1204 shmtx_leave(&pfdtab->mtx, &tmp);
1205 return rc;
1206}
1207
1208#endif /* K_OS_WINDOWS */
1209
1210#if K_OS != K_OS_WINDOWS
1211/**
1212 * Prepare file handles for inherting before a execve call.
1213 *
1214 * This is only used in the normal mode, so we've forked and need not worry
1215 * about cleaning anything up after us. Nor do we need think about locking.
1216 *
1217 * @returns 0 on success, -1 on failure.
1218 */
1219int shfile_exec_unix(shfdtab *pfdtab)
1220{
1221 int rc = 0;
1222# ifdef SHFILE_IN_USE
1223 unsigned fd;
1224
1225 for (fd = 0; fd < pfdtab->size; fd++)
1226 {
1227 if ( pfdtab->tab[fd].fd != -1
1228 && !(pfdtab->tab[fd].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC) )
1229 {
1230 TRACE2((NULL, "shfile_exec_unix: %d => %d\n", pfdtab->tab[fd].native, fd));
1231 if (dup2(pfdtab->tab[fd].native, fd) < 0)
1232 {
1233 /* fatal_error(NULL, "shfile_exec_unix: failed to move %d to %d", pfdtab->tab[fd].fd, fd); */
1234 rc = -1;
1235 }
1236 }
1237 }
1238# endif
1239 return rc;
1240}
1241#endif /* !K_OS_WINDOWS */
1242
1243/**
1244 * open().
1245 */
1246int shfile_open(shfdtab *pfdtab, const char *name, unsigned flags, mode_t mode)
1247{
1248 int fd;
1249#ifdef SHFILE_IN_USE
1250 char absname[SHFILE_MAX_PATH];
1251# if K_OS == K_OS_WINDOWS
1252 HANDLE hFile;
1253 DWORD dwDesiredAccess;
1254 DWORD dwShareMode;
1255 DWORD dwCreationDisposition;
1256 DWORD dwFlagsAndAttributes;
1257 SECURITY_ATTRIBUTES SecurityAttributes;
1258
1259# ifndef _O_ACCMODE
1260# define _O_ACCMODE (_O_RDONLY|_O_WRONLY|_O_RDWR)
1261# endif
1262 switch (flags & (_O_ACCMODE | _O_APPEND))
1263 {
1264 case _O_RDONLY: dwDesiredAccess = GENERIC_READ; break;
1265 case _O_RDONLY | _O_APPEND: dwDesiredAccess = GENERIC_READ; break;
1266 case _O_WRONLY: dwDesiredAccess = GENERIC_WRITE; break;
1267 case _O_WRONLY | _O_APPEND: dwDesiredAccess = (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA); break;
1268 case _O_RDWR: dwDesiredAccess = GENERIC_READ | GENERIC_WRITE; break;
1269 case _O_RDWR | _O_APPEND: dwDesiredAccess = GENERIC_READ | (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA); break;
1270
1271 default:
1272 RETURN_ERROR(-1, EINVAL, "invalid mode");
1273 }
1274
1275 dwShareMode = FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE;
1276
1277 SecurityAttributes.nLength = sizeof(SecurityAttributes);
1278 SecurityAttributes.lpSecurityDescriptor = NULL;
1279 SecurityAttributes.bInheritHandle = FALSE;
1280
1281 if (flags & _O_CREAT)
1282 {
1283 if ((flags & (_O_EXCL | _O_TRUNC)) == (_O_EXCL | _O_TRUNC))
1284 RETURN_ERROR(-1, EINVAL, "_O_EXCL | _O_TRUNC");
1285
1286 if (flags & _O_TRUNC)
1287 dwCreationDisposition = CREATE_ALWAYS; /* not 100%, but close enough */
1288 else if (flags & _O_EXCL)
1289 dwCreationDisposition = CREATE_NEW;
1290 else
1291 dwCreationDisposition = OPEN_ALWAYS;
1292 }
1293 else if (flags & _O_TRUNC)
1294 dwCreationDisposition = TRUNCATE_EXISTING;
1295 else
1296 dwCreationDisposition = OPEN_EXISTING;
1297
1298 if (!(flags & _O_CREAT) || (mode & 0222))
1299 dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
1300 else
1301 dwFlagsAndAttributes = FILE_ATTRIBUTE_READONLY;
1302
1303 fd = shfile_make_path(pfdtab, name, &absname[0]);
1304 if (!fd)
1305 {
1306 SetLastError(0);
1307 hFile = CreateFileA(absname,
1308 dwDesiredAccess,
1309 dwShareMode,
1310 &SecurityAttributes,
1311 dwCreationDisposition,
1312 dwFlagsAndAttributes,
1313 NULL /* hTemplateFile */);
1314 if (hFile != INVALID_HANDLE_VALUE)
1315 fd = shfile_insert(pfdtab, (intptr_t)hFile, flags, 0, -1, "shfile_open");
1316 else
1317 fd = shfile_dos2errno(GetLastError());
1318 }
1319
1320# else /* K_OS != K_OS_WINDOWS */
1321 fd = shfile_make_path(pfdtab, name, &absname[0]);
1322 if (!fd)
1323 {
1324 fd = open(absname, flags, mode);
1325 if (fd != -1)
1326 fd = shfile_copy_insert_and_close(pfdtab, &fd, flags, 0, -1, "shfile_open");
1327 }
1328
1329# endif /* K_OS != K_OS_WINDOWS */
1330
1331#else
1332 fd = open(name, flags, mode);
1333#endif
1334
1335 TRACE2((NULL, "shfile_open(%p:{%s}, %#x, 0%o) -> %d [%d]\n", name, name, flags, mode, fd, errno));
1336 return fd;
1337}
1338
1339int shfile_pipe(shfdtab *pfdtab, int fds[2])
1340{
1341 int rc = -1;
1342#ifdef SHFILE_IN_USE
1343# if K_OS == K_OS_WINDOWS
1344 HANDLE hRead = INVALID_HANDLE_VALUE;
1345 HANDLE hWrite = INVALID_HANDLE_VALUE;
1346 SECURITY_ATTRIBUTES SecurityAttributes;
1347
1348 SecurityAttributes.nLength = sizeof(SecurityAttributes);
1349 SecurityAttributes.lpSecurityDescriptor = NULL;
1350 SecurityAttributes.bInheritHandle = FALSE;
1351
1352 fds[1] = fds[0] = -1;
1353 if (CreatePipe(&hRead, &hWrite, &SecurityAttributes, 4096))
1354 {
1355 fds[0] = shfile_insert(pfdtab, (intptr_t)hRead, O_RDONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe");
1356 if (fds[0] != -1)
1357 {
1358 fds[1] = shfile_insert(pfdtab, (intptr_t)hWrite, O_WRONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe");
1359 if (fds[1] != -1)
1360 rc = 0;
1361 }
1362
1363# else
1364 int native_fds[2];
1365
1366 fds[1] = fds[0] = -1;
1367 if (!pipe(native_fds))
1368 {
1369 fds[0] = shfile_copy_insert_and_close(pfdtab, &native_fds[0], O_RDONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe");
1370 if (fds[0] != -1)
1371 {
1372 fds[1] = shfile_copy_insert_and_close(pfdtab, &native_fds[1], O_WRONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe");
1373 if (fds[1] != -1)
1374 rc = 0;
1375 }
1376# endif
1377 if (fds[1] == -1)
1378 {
1379 int s = errno;
1380 if (fds[0] != -1)
1381 {
1382 shmtxtmp tmp;
1383 shmtx_enter(&pfdtab->mtx, &tmp);
1384 rc = fds[0];
1385 pfdtab->tab[rc].fd = -1;
1386 pfdtab->tab[rc].oflags = 0;
1387 pfdtab->tab[rc].shflags = 0;
1388 pfdtab->tab[rc].native = -1;
1389 shmtx_leave(&pfdtab->mtx, &tmp);
1390 }
1391
1392# if K_OS == K_OS_WINDOWS
1393 CloseHandle(hRead);
1394 CloseHandle(hWrite);
1395# else
1396 close(native_fds[0]);
1397 close(native_fds[1]);
1398# endif
1399 fds[0] = fds[1] = -1;
1400 errno = s;
1401 rc = -1;
1402 }
1403 }
1404 else
1405 {
1406# if K_OS == K_OS_WINDOWS
1407 errno = shfile_dos2errno(GetLastError());
1408# endif
1409 rc = -1;
1410 }
1411
1412#else
1413 rc = pipe(fds);
1414#endif
1415
1416 TRACE2((NULL, "shfile_pipe() -> %d{%d,%d} [%d]\n", rc, fds[0], fds[1], errno));
1417 return rc;
1418}
1419
1420/**
1421 * dup().
1422 */
1423int shfile_dup(shfdtab *pfdtab, int fd)
1424{
1425 return shfile_fcntl(pfdtab,fd, F_DUPFD, 0);
1426}
1427
1428/**
1429 * Move the file descriptor, closing any existing descriptor at @a fdto.
1430 *
1431 * @returns fdto on success, -1 and errno on failure.
1432 * @param pfdtab The file descriptor table.
1433 * @param fdfrom The descriptor to move.
1434 * @param fdto Where to move it.
1435 */
1436int shfile_movefd(shfdtab *pfdtab, int fdfrom, int fdto)
1437{
1438#ifdef SHFILE_IN_USE
1439 int rc;
1440 shmtxtmp tmp;
1441 shfile *file = shfile_get(pfdtab, fdfrom, &tmp);
1442 if (file)
1443 {
1444 /* prepare the new entry */
1445 if ((unsigned)fdto >= pfdtab->size)
1446 shfile_grow_tab_locked(pfdtab, fdto);
1447 if ((unsigned)fdto < pfdtab->size)
1448 {
1449 if (pfdtab->tab[fdto].fd != -1)
1450 shfile_native_close(pfdtab->tab[fdto].native, pfdtab->tab[fdto].oflags);
1451
1452 /* setup the target. */
1453 pfdtab->tab[fdto].fd = fdto;
1454 pfdtab->tab[fdto].oflags = file->oflags;
1455 pfdtab->tab[fdto].shflags = file->shflags;
1456 pfdtab->tab[fdto].native = file->native;
1457
1458 /* close the source. */
1459 file->fd = -1;
1460 file->oflags = 0;
1461 file->shflags = 0;
1462 file->native = -1;
1463
1464 rc = fdto;
1465 }
1466 else
1467 {
1468 errno = EMFILE;
1469 rc = -1;
1470 }
1471
1472 shfile_put(pfdtab, file, &tmp);
1473 }
1474 else
1475 rc = -1;
1476 return rc;
1477
1478#else
1479 int fdnew = dup2(fdfrom, fdto);
1480 if (fdnew >= 0)
1481 close(fdfrom);
1482 return fdnew;
1483#endif
1484}
1485
1486/**
1487 * Move the file descriptor to somewhere at @a fdMin or above.
1488 *
1489 * @returns the new file descriptor success, -1 and errno on failure.
1490 * @param pfdtab The file descriptor table.
1491 * @param fdfrom The descriptor to move.
1492 * @param fdMin The minimum descriptor.
1493 */
1494int shfile_movefd_above(shfdtab *pfdtab, int fdfrom, int fdMin)
1495{
1496#ifdef SHFILE_IN_USE
1497 int fdto;
1498 shmtxtmp tmp;
1499 shfile *file = shfile_get(pfdtab, fdfrom, &tmp);
1500 if (file)
1501 {
1502 /* find a new place */
1503 int i;
1504 fdto = -1;
1505 for (i = fdMin; (unsigned)i < pfdtab->size; i++)
1506 if (pfdtab->tab[i].fd == -1)
1507 {
1508 fdto = i;
1509 break;
1510 }
1511 if (fdto == -1)
1512 fdto = shfile_grow_tab_locked(pfdtab, fdMin);
1513 if (fdto != -1)
1514 {
1515 /* setup the target. */
1516 pfdtab->tab[fdto].fd = fdto;
1517 pfdtab->tab[fdto].oflags = file->oflags;
1518 pfdtab->tab[fdto].shflags = file->shflags;
1519 pfdtab->tab[fdto].native = file->native;
1520
1521 /* close the source. */
1522 file->fd = -1;
1523 file->oflags = 0;
1524 file->shflags = 0;
1525 file->native = -1;
1526 }
1527 else
1528 {
1529 errno = EMFILE;
1530 fdto = -1;
1531 }
1532
1533 shfile_put(pfdtab, file, &tmp);
1534 }
1535 else
1536 fdto = -1;
1537 return fdto;
1538
1539#else
1540 int fdnew = fcntl(fdfrom, F_DUPFD, fdMin);
1541 if (fdnew >= 0)
1542 close(fdfrom);
1543 return fdnew;
1544#endif
1545}
1546
1547/**
1548 * close().
1549 */
1550int shfile_close(shfdtab *pfdtab, unsigned fd)
1551{
1552 int rc;
1553#ifdef SHFILE_IN_USE
1554 shmtxtmp tmp;
1555 shfile *file = shfile_get(pfdtab, fd, &tmp);
1556 if (file)
1557 {
1558 shfile_native_close(file->native, file->oflags);
1559
1560 file->fd = -1;
1561 file->oflags = 0;
1562 file->shflags = 0;
1563 file->native = -1;
1564
1565 shfile_put(pfdtab, file, &tmp);
1566 rc = 0;
1567 }
1568 else
1569 rc = -1;
1570
1571#else
1572 rc = close(fd);
1573#endif
1574
1575 TRACE2((NULL, "shfile_close(%d) -> %d [%d]\n", fd, rc, errno));
1576 return rc;
1577}
1578
1579/**
1580 * read().
1581 */
1582long shfile_read(shfdtab *pfdtab, int fd, void *buf, size_t len)
1583{
1584 long rc;
1585#ifdef SHFILE_IN_USE
1586 shmtxtmp tmp;
1587 shfile *file = shfile_get(pfdtab, fd, &tmp);
1588 if (file)
1589 {
1590# if K_OS == K_OS_WINDOWS
1591 DWORD dwRead = 0;
1592 if (ReadFile((HANDLE)file->native, buf, (DWORD)len, &dwRead, NULL))
1593 rc = dwRead;
1594 else
1595 rc = shfile_dos2errno(GetLastError());
1596# else
1597 rc = read(file->native, buf, len);
1598# endif
1599
1600 shfile_put(pfdtab, file, &tmp);
1601 }
1602 else
1603 rc = -1;
1604
1605#else
1606 rc = read(fd, buf, len);
1607#endif
1608 return rc;
1609}
1610
1611/**
1612 * write().
1613 */
1614long shfile_write(shfdtab *pfdtab, int fd, const void *buf, size_t len)
1615{
1616 long rc;
1617#ifdef SHFILE_IN_USE
1618 shmtxtmp tmp;
1619 shfile *file = shfile_get(pfdtab, fd, &tmp);
1620 if (file)
1621 {
1622# if K_OS == K_OS_WINDOWS
1623 DWORD dwWritten = 0;
1624 if (WriteFile((HANDLE)file->native, buf, (DWORD)len, &dwWritten, NULL))
1625 rc = dwWritten;
1626 else
1627 rc = shfile_dos2errno(GetLastError());
1628# else
1629 rc = write(file->native, buf, len);
1630# endif
1631
1632 shfile_put(pfdtab, file, &tmp);
1633 }
1634 else
1635 rc = -1;
1636
1637# ifdef DEBUG
1638 if (fd != shthread_get_shell()->tracefd)
1639 TRACE2((NULL, "shfile_write(%d,,%d) -> %d [%d]\n", fd, len, rc, errno));
1640# endif
1641
1642#else
1643 if (fd != shthread_get_shell()->tracefd)
1644 {
1645 int iSavedErrno = errno;
1646 struct stat s;
1647 int x;
1648 x = fstat(fd, &s);
1649 TRACE2((NULL, "shfile_write(%d) - %lu bytes (%d) - pos %lu - before; %o\n",
1650 fd, (long)s.st_size, x, (long)lseek(fd, 0, SEEK_CUR), s.st_mode ));
1651 K_NOREF(x);
1652 errno = iSavedErrno;
1653 }
1654
1655 rc = write(fd, buf, len);
1656#endif
1657 return rc;
1658}
1659
1660/**
1661 * lseek().
1662 */
1663long shfile_lseek(shfdtab *pfdtab, int fd, long off, int whench)
1664{
1665 long rc;
1666#ifdef SHFILE_IN_USE
1667 shmtxtmp tmp;
1668 shfile *file = shfile_get(pfdtab, fd, &tmp);
1669 if (file)
1670 {
1671# if K_OS == K_OS_WINDOWS
1672 assert(SEEK_SET == FILE_BEGIN);
1673 assert(SEEK_CUR == FILE_CURRENT);
1674 assert(SEEK_END == FILE_END);
1675 rc = SetFilePointer((HANDLE)file->native, off, NULL, whench);
1676 if (rc == INVALID_SET_FILE_POINTER)
1677 rc = shfile_dos2errno(GetLastError());
1678# else
1679 rc = lseek(file->native, off, whench);
1680# endif
1681
1682 shfile_put(pfdtab, file, &tmp);
1683 }
1684 else
1685 rc = -1;
1686
1687#else
1688 rc = lseek(fd, off, whench);
1689#endif
1690
1691 return rc;
1692}
1693
1694int shfile_fcntl(shfdtab *pfdtab, int fd, int cmd, int arg)
1695{
1696 int rc;
1697#ifdef SHFILE_IN_USE
1698 shmtxtmp tmp;
1699 shfile *file = shfile_get(pfdtab, fd, &tmp);
1700 if (file)
1701 {
1702 switch (cmd)
1703 {
1704 case F_GETFL:
1705 rc = file->oflags;
1706 break;
1707
1708 case F_SETFL:
1709 {
1710 unsigned mask = O_NONBLOCK | O_APPEND | O_BINARY | O_TEXT;
1711# ifdef O_DIRECT
1712 mask |= O_DIRECT;
1713# endif
1714# ifdef O_ASYNC
1715 mask |= O_ASYNC;
1716# endif
1717# ifdef O_SYNC
1718 mask |= O_SYNC;
1719# endif
1720 if ((file->oflags & mask) == (arg & mask))
1721 rc = 0;
1722 else
1723 {
1724# if K_OS == K_OS_WINDOWS
1725 assert(0);
1726 errno = EINVAL;
1727 rc = -1;
1728# else
1729 rc = fcntl(file->native, F_SETFL, arg);
1730 if (rc != -1)
1731 file->oflags = (file->oflags & ~mask) | (arg & mask);
1732# endif
1733 }
1734 break;
1735 }
1736
1737 case F_DUPFD:
1738 {
1739# if K_OS == K_OS_WINDOWS
1740 HANDLE hNew = INVALID_HANDLE_VALUE;
1741 if (DuplicateHandle(GetCurrentProcess(),
1742 (HANDLE)file->native,
1743 GetCurrentProcess(),
1744 &hNew,
1745 0,
1746 FALSE /* bInheritHandle */,
1747 DUPLICATE_SAME_ACCESS))
1748 rc = shfile_insert(pfdtab, (intptr_t)hNew, file->oflags, file->shflags, arg, "shfile_fcntl");
1749 else
1750 rc = shfile_dos2errno(GetLastError());
1751# else
1752 int nativeNew = fcntl(file->native, F_DUPFD, SHFILE_UNIX_MIN_FD);
1753 if (nativeNew != -1)
1754 rc = shfile_insert(pfdtab, nativeNew, file->oflags, file->shflags, arg, "shfile_fcntl");
1755 else
1756 rc = -1;
1757# endif
1758 break;
1759 }
1760
1761 default:
1762 errno = -EINVAL;
1763 rc = -1;
1764 break;
1765 }
1766
1767 shfile_put(pfdtab, file, &tmp);
1768 }
1769 else
1770 rc = -1;
1771
1772#else
1773 rc = fcntl(fd, cmd, arg);
1774#endif
1775
1776 switch (cmd)
1777 {
1778 case F_GETFL: TRACE2((NULL, "shfile_fcntl(%d,F_GETFL,ignored=%d) -> %d [%d]\n", fd, arg, rc, errno)); break;
1779 case F_SETFL: TRACE2((NULL, "shfile_fcntl(%d,F_SETFL,newflags=%#x) -> %d [%d]\n", fd, arg, rc, errno)); break;
1780 case F_DUPFD: TRACE2((NULL, "shfile_fcntl(%d,F_DUPFD,minfd=%d) -> %d [%d]\n", fd, arg, rc, errno)); break;
1781 default: TRACE2((NULL, "shfile_fcntl(%d,%d,%d) -> %d [%d]\n", fd, cmd, arg, rc, errno)); break;
1782 }
1783 return rc;
1784}
1785
1786int shfile_stat(shfdtab *pfdtab, const char *path, struct stat *pst)
1787{
1788#ifdef SHFILE_IN_USE
1789 char abspath[SHFILE_MAX_PATH];
1790 int rc;
1791 rc = shfile_make_path(pfdtab, path, &abspath[0]);
1792 if (!rc)
1793 {
1794# if K_OS == K_OS_WINDOWS
1795 int dir_slash = shfile_trailing_slash_hack(abspath);
1796 rc = stat(abspath, pst); /** @todo re-implement stat. */
1797 if (!rc && dir_slash && !S_ISDIR(pst->st_mode))
1798 {
1799 rc = -1;
1800 errno = ENOTDIR;
1801 }
1802# else
1803 rc = stat(abspath, pst);
1804# endif
1805 }
1806 TRACE2((NULL, "shfile_stat(,%s,) -> %d [%d]\n", path, rc, errno));
1807 return rc;
1808#else
1809 return stat(path, pst);
1810#endif
1811}
1812
1813int shfile_lstat(shfdtab *pfdtab, const char *path, struct stat *pst)
1814{
1815 int rc;
1816#ifdef SHFILE_IN_USE
1817 char abspath[SHFILE_MAX_PATH];
1818
1819 rc = shfile_make_path(pfdtab, path, &abspath[0]);
1820 if (!rc)
1821 {
1822# if K_OS == K_OS_WINDOWS
1823 int dir_slash = shfile_trailing_slash_hack(abspath);
1824 rc = stat(abspath, pst); /** @todo re-implement stat. */
1825 if (!rc && dir_slash && !S_ISDIR(pst->st_mode))
1826 {
1827 rc = -1;
1828 errno = ENOTDIR;
1829 }
1830# else
1831 rc = lstat(abspath, pst);
1832# endif
1833 }
1834#else
1835 rc = stat(path, pst);
1836#endif
1837 TRACE2((NULL, "shfile_stat(,%s,) -> %d [%d]\n", path, rc, errno));
1838 return rc;
1839}
1840
1841/**
1842 * chdir().
1843 */
1844int shfile_chdir(shfdtab *pfdtab, const char *path)
1845{
1846 int rc;
1847#ifdef SHFILE_IN_USE
1848 shinstance *psh = shthread_get_shell();
1849 char abspath[SHFILE_MAX_PATH];
1850
1851 rc = shfile_make_path(pfdtab, path, &abspath[0]);
1852 if (!rc)
1853 {
1854 char *abspath_copy = sh_strdup(psh, abspath);
1855 char *free_me = abspath_copy;
1856 rc = chdir(abspath);
1857 if (!rc)
1858 {
1859 shmtxtmp tmp;
1860 shmtx_enter(&pfdtab->mtx, &tmp);
1861
1862 shfile_fix_slashes(abspath_copy);
1863 free_me = pfdtab->cwd;
1864 pfdtab->cwd = abspath_copy;
1865
1866 shmtx_leave(&pfdtab->mtx, &tmp);
1867 }
1868 sh_free(psh, free_me);
1869 }
1870 else
1871 rc = -1;
1872#else
1873 rc = chdir(path);
1874#endif
1875
1876 TRACE2((NULL, "shfile_chdir(,%s) -> %d [%d]\n", path, rc, errno));
1877 return rc;
1878}
1879
1880/**
1881 * getcwd().
1882 */
1883char *shfile_getcwd(shfdtab *pfdtab, char *buf, int size)
1884{
1885 char *ret;
1886#ifdef SHFILE_IN_USE
1887
1888 ret = NULL;
1889 if (buf && !size)
1890 errno = -EINVAL;
1891 else
1892 {
1893 size_t cwd_size;
1894 shmtxtmp tmp;
1895 shmtx_enter(&pfdtab->mtx, &tmp);
1896
1897 cwd_size = strlen(pfdtab->cwd) + 1;
1898 if (buf)
1899 {
1900 if (cwd_size <= (size_t)size)
1901 ret = memcpy(buf, pfdtab->cwd, cwd_size);
1902 else
1903 errno = ERANGE;
1904 }
1905 else
1906 {
1907 if ((size_t)size < cwd_size)
1908 size = (int)cwd_size;
1909 ret = sh_malloc(shthread_get_shell(), size);
1910 if (ret)
1911 ret = memcpy(ret, pfdtab->cwd, cwd_size);
1912 else
1913 errno = ENOMEM;
1914 }
1915
1916 shmtx_leave(&pfdtab->mtx, &tmp);
1917 }
1918#else
1919 ret = getcwd(buf, size);
1920#endif
1921
1922 TRACE2((NULL, "shfile_getcwd(,%p,%d) -> %s [%d]\n", buf, size, ret, errno));
1923 return ret;
1924}
1925
1926/**
1927 * access().
1928 */
1929int shfile_access(shfdtab *pfdtab, const char *path, int type)
1930{
1931 int rc;
1932#ifdef SHFILE_IN_USE
1933 char abspath[SHFILE_MAX_PATH];
1934
1935 rc = shfile_make_path(pfdtab, path, &abspath[0]);
1936 if (!rc)
1937 {
1938# ifdef _MSC_VER
1939 if (type & X_OK)
1940 type = (type & ~X_OK) | R_OK;
1941# endif
1942 rc = access(abspath, type);
1943 }
1944#else
1945# ifdef _MSC_VER
1946 if (type & X_OK)
1947 type = (type & ~X_OK) | R_OK;
1948# endif
1949 rc = access(path, type);
1950#endif
1951
1952 TRACE2((NULL, "shfile_access(,%s,%#x) -> %d [%d]\n", path, type, rc, errno));
1953 return rc;
1954}
1955
1956/**
1957 * isatty()
1958 */
1959int shfile_isatty(shfdtab *pfdtab, int fd)
1960{
1961 int rc;
1962#ifdef SHFILE_IN_USE
1963 shmtxtmp tmp;
1964 shfile *file = shfile_get(pfdtab, fd, &tmp);
1965 if (file)
1966 {
1967# if K_OS == K_OS_WINDOWS
1968 rc = (file->shflags & SHFILE_FLAGS_TYPE_MASK) == SHFILE_FLAGS_TTY;
1969# else
1970 rc = isatty(file->native);
1971# endif
1972 shfile_put(pfdtab, file, &tmp);
1973 }
1974 else
1975 rc = 0;
1976#else
1977 rc = isatty(fd);
1978#endif
1979
1980 TRACE2((NULL, "isatty(%d) -> %d [%d]\n", fd, rc, errno));
1981 return rc;
1982}
1983
1984/**
1985 * fcntl F_SETFD / FD_CLOEXEC.
1986 */
1987int shfile_cloexec(shfdtab *pfdtab, int fd, int closeit)
1988{
1989 int rc;
1990#ifdef SHFILE_IN_USE
1991 shmtxtmp tmp;
1992 shfile *file = shfile_get(pfdtab, fd, &tmp);
1993 if (file)
1994 {
1995 if (closeit)
1996 file->shflags |= SHFILE_FLAGS_CLOSE_ON_EXEC;
1997 else
1998 file->shflags &= ~SHFILE_FLAGS_CLOSE_ON_EXEC;
1999 shfile_put(pfdtab, file, &tmp);
2000 rc = 0;
2001 }
2002 else
2003 rc = -1;
2004#else
2005 rc = fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0)
2006 | (closeit ? FD_CLOEXEC : 0));
2007#endif
2008
2009 TRACE2((NULL, "shfile_cloexec(%d, %d) -> %d [%d]\n", fd, closeit, rc, errno));
2010 return rc;
2011}
2012
2013/**
2014 * Sets the SHFILE_FLAGS_TRACE flag.
2015 */
2016int shfile_set_trace(shfdtab *pfdtab, int fd)
2017{
2018 int rc;
2019#ifdef SHFILE_IN_USE
2020 shmtxtmp tmp;
2021 shfile *file = shfile_get(pfdtab, fd, &tmp);
2022 if (file)
2023 {
2024 file->shflags |= SHFILE_FLAGS_TRACE;
2025 shfile_put(pfdtab, file, &tmp);
2026 rc = 0;
2027 }
2028 else
2029 rc = -1;
2030#else
2031 rc = 0;
2032#endif
2033
2034 TRACE2((NULL, "shfile_set_trace(%d) -> %d\n", fd, rc));
2035 return rc;
2036}
2037
2038
2039int shfile_ioctl(shfdtab *pfdtab, int fd, unsigned long request, void *buf)
2040{
2041 int rc;
2042#ifdef SHFILE_IN_USE
2043 shmtxtmp tmp;
2044 shfile *file = shfile_get(pfdtab, fd, &tmp);
2045 if (file)
2046 {
2047# if K_OS == K_OS_WINDOWS
2048 rc = -1;
2049 errno = ENOSYS;
2050# else
2051 rc = ioctl(file->native, request, buf);
2052# endif
2053 shfile_put(pfdtab, file, &tmp);
2054 }
2055 else
2056 rc = -1;
2057#else
2058 rc = ioctl(fd, request, buf);
2059#endif
2060
2061 TRACE2((NULL, "ioctl(%d, %#x, %p) -> %d\n", fd, request, buf, rc));
2062 return rc;
2063}
2064
2065
2066mode_t shfile_get_umask(shfdtab *pfdtab)
2067{
2068 /** @todo */
2069 return 022;
2070}
2071
2072void shfile_set_umask(shfdtab *pfdtab, mode_t mask)
2073{
2074 /** @todo */
2075 (void)mask;
2076}
2077
2078
2079
2080shdir *shfile_opendir(shfdtab *pfdtab, const char *dir)
2081{
2082#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
2083 shdir *pdir = NULL;
2084
2085 TRACE2((NULL, "shfile_opendir: dir='%s'\n", dir));
2086 shfile_init_globals();
2087 if (g_pfnNtQueryDirectoryFile)
2088 {
2089 char abspath[SHFILE_MAX_PATH];
2090 if (shfile_make_path(pfdtab, dir, &abspath[0]) == 0)
2091 {
2092 HANDLE hFile;
2093 SECURITY_ATTRIBUTES SecurityAttributes;
2094
2095 SecurityAttributes.nLength = sizeof(SecurityAttributes);
2096 SecurityAttributes.lpSecurityDescriptor = NULL;
2097 SecurityAttributes.bInheritHandle = FALSE;
2098
2099 hFile = CreateFileA(abspath,
2100 GENERIC_READ,
2101 FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
2102 &SecurityAttributes,
2103 OPEN_EXISTING,
2104 FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS,
2105 NULL /* hTemplateFile */);
2106 if (hFile != INVALID_HANDLE_VALUE)
2107 {
2108 pdir = (shdir *)sh_malloc(shthread_get_shell(), sizeof(*pdir));
2109 if (pdir)
2110 {
2111 pdir->pfdtab = pfdtab;
2112 pdir->native = hFile;
2113 pdir->off = ~(size_t)0;
2114 }
2115 else
2116 CloseHandle(hFile);
2117 }
2118 else
2119 {
2120 errno = shfile_dos2errno(GetLastError());
2121 TRACE2((NULL, "shfile_opendir: CreateFileA(%s) -> %d/%d\n", abspath, GetLastError(), errno));
2122 }
2123 }
2124 }
2125 else
2126 errno = ENOSYS;
2127 return pdir;
2128#else
2129 TRACE2((NULL, "shfile_opendir: dir='%s'\n", dir));
2130 return (shdir *)opendir(dir);
2131#endif
2132}
2133
2134shdirent *shfile_readdir(struct shdir *pdir)
2135{
2136#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
2137 if (pdir)
2138 {
2139 NTSTATUS rcNt;
2140
2141 if ( pdir->off == ~(size_t)0
2142 || pdir->off + sizeof(MY_FILE_NAMES_INFORMATION) >= pdir->cb)
2143 {
2144 MY_IO_STATUS_BLOCK Ios;
2145
2146 memset(&Ios, 0, sizeof(Ios));
2147 rcNt = g_pfnNtQueryDirectoryFile(pdir->native,
2148 NULL /*Event*/,
2149 NULL /*ApcRoutine*/,
2150 NULL /*ApcContext*/,
2151 &Ios,
2152 &pdir->buf[0],
2153 sizeof(pdir->buf),
2154 MY_FileNamesInformation,
2155 FALSE /*ReturnSingleEntry*/,
2156 NULL /*FileName*/,
2157 pdir->off == ~(size_t)0 /*RestartScan*/);
2158 if (rcNt >= 0 && rcNt != STATUS_PENDING)
2159 {
2160 pdir->cb = Ios.Information;
2161 pdir->off = 0;
2162 }
2163 else if (rcNt == STATUS_NO_MORE_FILES)
2164 errno = 0; /* wrong? */
2165 else
2166 shfile_nt2errno(rcNt);
2167 }
2168
2169 if ( pdir->off != ~(size_t)0
2170 && pdir->off + sizeof(MY_FILE_NAMES_INFORMATION) <= pdir->cb)
2171 {
2172 PMY_FILE_NAMES_INFORMATION pcur = (PMY_FILE_NAMES_INFORMATION)&pdir->buf[pdir->off];
2173 ANSI_STRING astr;
2174 UNICODE_STRING ustr;
2175
2176 astr.Length = astr.MaximumLength = sizeof(pdir->ent.name);
2177 astr.Buffer = &pdir->ent.name[0];
2178
2179 ustr.Length = ustr.MaximumLength = pcur->FileNameLength < ~(USHORT)0 ? (USHORT)pcur->FileNameLength : ~(USHORT)0;
2180 ustr.Buffer = &pcur->FileName[0];
2181
2182 rcNt = g_pfnRtlUnicodeStringToAnsiString(&astr, &ustr, 0/*AllocateDestinationString*/);
2183 if (rcNt < 0)
2184 sprintf(pdir->ent.name, "conversion-failed-%08x-rcNt=%08x-len=%u",
2185 pcur->FileIndex, rcNt, pcur->FileNameLength);
2186 if (pcur->NextEntryOffset)
2187 pdir->off += pcur->NextEntryOffset;
2188 else
2189 pdir->off = pdir->cb;
2190 return &pdir->ent;
2191 }
2192 }
2193 else
2194 errno = EINVAL;
2195 return NULL;
2196#else
2197 struct dirent *pde = readdir((DIR *)pdir);
2198 return pde ? (shdirent *)&pde->d_name[0] : NULL;
2199#endif
2200}
2201
2202void shfile_closedir(struct shdir *pdir)
2203{
2204#if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
2205 if (pdir)
2206 {
2207 CloseHandle(pdir->native);
2208 pdir->pfdtab = NULL;
2209 pdir->native = INVALID_HANDLE_VALUE;
2210 sh_free(shthread_get_shell(), pdir);
2211 }
2212 else
2213 errno = EINVAL;
2214#else
2215 closedir((DIR *)pdir);
2216#endif
2217}
2218
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