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source: kBuild/trunk/src/kmk/kmkbuiltin/mscfakes.c@ 2134

Last change on this file since 2134 was 2113, checked in by bird, 16 years ago

kmkbuiltin: include config.h
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File size: 14.4 KB
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1/* $Id: mscfakes.c 2113 2008-12-25 13:21:58Z bird $ */
2/** @file
3 * Fake Unix stuff for MSC.
4 */
5
6/*
7 * Copyright (c) 2005-2008 knut st. osmundsen <[email protected]>
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 3 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, see <http://www.gnu.org/licenses/>
23 *
24 */
25
26/*******************************************************************************
27* Header Files *
28*******************************************************************************/
29#include "config.h"
30#include <stdarg.h>
31#include <stdio.h>
32#include <stdlib.h>
33#include <string.h>
34#include <errno.h>
35#include <io.h>
36#include <fcntl.h>
37#include <sys/stat.h>
38#include "err.h"
39#include "mscfakes.h"
40
41#define timeval windows_timeval
42#include <Windows.h>
43#undef timeval
44
45
46/**
47 * Makes corrections to a directory path that ends with a trailing slash.
48 *
49 * @returns temporary buffer to free.
50 * @param ppszPath The path pointer. This is updated when necessary.
51 * @param pfMustBeDir This is set if it must be a directory, otherwise it's cleared.
52 */
53static char *
54msc_fix_path(const char **ppszPath, int *pfMustBeDir)
55{
56 const char *pszPath = *ppszPath;
57 const char *psz;
58 char *pszNew;
59 *pfMustBeDir = 0;
60
61 /*
62 * Skip any compusory trailing slashes
63 */
64 if (pszPath[0] == '/' || pszPath[0] == '\\')
65 {
66 if ( (pszPath[1] == '/' || pszPath[1] == '\\')
67 && pszPath[2] != '/'
68 && pszPath[2] != '\\')
69 /* unc */
70 pszPath += 2;
71 else
72 /* root slash(es) */
73 pszPath++;
74 }
75 else if ( isalpha(pszPath[0])
76 && pszPath[1] == ':')
77 {
78 if (pszPath[2] == '/' || pszPath[2] == '\\')
79 /* drive w/ slash */
80 pszPath += 3;
81 else
82 /* drive relative path. */
83 pszPath += 2;
84 }
85 /* else: relative path, no skipping necessary. */
86
87 /*
88 * Any trailing slashes to drop off?
89 */
90 psz = strchr(pszPath, '\0');
91 if (pszPath <= psz)
92 return NULL;
93 if ( psz[-1] != '/'
94 || psz[-1] != '\\')
95 return NULL;
96
97 /* figure how many, make a copy and strip them off. */
98 while ( psz > pszPath
99 && ( psz[-1] == '/'
100 || psz[-1] == '\\'))
101 psz--;
102 pszNew = strdup(pszPath);
103 pszNew[psz - pszPath] = '\0';
104
105 *pfMustBeDir = 1;
106 *ppszPath = pszNew; /* use this one */
107 return pszNew;
108}
109
110
111static int
112msc_set_errno(DWORD dwErr)
113{
114 switch (dwErr)
115 {
116 default:
117 case ERROR_INVALID_FUNCTION: errno = EINVAL; break;
118 case ERROR_FILE_NOT_FOUND: errno = ENOENT; break;
119 case ERROR_PATH_NOT_FOUND: errno = ENOENT; break;
120 case ERROR_TOO_MANY_OPEN_FILES: errno = EMFILE; break;
121 case ERROR_ACCESS_DENIED: errno = EACCES; break;
122 case ERROR_INVALID_HANDLE: errno = EBADF; break;
123 case ERROR_ARENA_TRASHED: errno = ENOMEM; break;
124 case ERROR_NOT_ENOUGH_MEMORY: errno = ENOMEM; break;
125 case ERROR_INVALID_BLOCK: errno = ENOMEM; break;
126 case ERROR_BAD_ENVIRONMENT: errno = E2BIG; break;
127 case ERROR_BAD_FORMAT: errno = ENOEXEC; break;
128 case ERROR_INVALID_ACCESS: errno = EINVAL; break;
129 case ERROR_INVALID_DATA: errno = EINVAL; break;
130 case ERROR_INVALID_DRIVE: errno = ENOENT; break;
131 case ERROR_CURRENT_DIRECTORY: errno = EACCES; break;
132 case ERROR_NOT_SAME_DEVICE: errno = EXDEV; break;
133 case ERROR_NO_MORE_FILES: errno = ENOENT; break;
134 case ERROR_LOCK_VIOLATION: errno = EACCES; break;
135 case ERROR_BAD_NETPATH: errno = ENOENT; break;
136 case ERROR_NETWORK_ACCESS_DENIED: errno = EACCES; break;
137 case ERROR_BAD_NET_NAME: errno = ENOENT; break;
138 case ERROR_FILE_EXISTS: errno = EEXIST; break;
139 case ERROR_CANNOT_MAKE: errno = EACCES; break;
140 case ERROR_FAIL_I24: errno = EACCES; break;
141 case ERROR_INVALID_PARAMETER: errno = EINVAL; break;
142 case ERROR_NO_PROC_SLOTS: errno = EAGAIN; break;
143 case ERROR_DRIVE_LOCKED: errno = EACCES; break;
144 case ERROR_BROKEN_PIPE: errno = EPIPE; break;
145 case ERROR_DISK_FULL: errno = ENOSPC; break;
146 case ERROR_INVALID_TARGET_HANDLE: errno = EBADF; break;
147 case ERROR_WAIT_NO_CHILDREN: errno = ECHILD; break;
148 case ERROR_CHILD_NOT_COMPLETE: errno = ECHILD; break;
149 case ERROR_DIRECT_ACCESS_HANDLE: errno = EBADF; break;
150 case ERROR_NEGATIVE_SEEK: errno = EINVAL; break;
151 case ERROR_SEEK_ON_DEVICE: errno = EACCES; break;
152 case ERROR_DIR_NOT_EMPTY: errno = ENOTEMPTY; break;
153 case ERROR_NOT_LOCKED: errno = EACCES; break;
154 case ERROR_BAD_PATHNAME: errno = ENOENT; break;
155 case ERROR_MAX_THRDS_REACHED: errno = EAGAIN; break;
156 case ERROR_LOCK_FAILED: errno = EACCES; break;
157 case ERROR_ALREADY_EXISTS: errno = EEXIST; break;
158 case ERROR_FILENAME_EXCED_RANGE: errno = ENOENT; break;
159 case ERROR_NESTING_NOT_ALLOWED: errno = EAGAIN; break;
160 }
161
162 return -1;
163}
164
165char *dirname(char *path)
166{
167 /** @todo later */
168 return path;
169}
170
171
172int lchmod(const char *pszPath, mode_t mode)
173{
174 int rc = 0;
175 int fMustBeDir;
176 char *pszPathFree = msc_fix_path(&pszPath, &fMustBeDir);
177
178 /*
179 * Get the current attributes
180 */
181 DWORD fAttr = GetFileAttributes(pszPath);
182 if (fAttr == INVALID_FILE_ATTRIBUTES)
183 rc = msc_set_errno(GetLastError());
184 else if (fMustBeDir & !(fAttr & FILE_ATTRIBUTE_DIRECTORY))
185 {
186 errno = ENOTDIR;
187 rc = -1;
188 }
189 else
190 {
191 /*
192 * Modify the attributes and try set them.
193 */
194 if (mode & _S_IWRITE)
195 fAttr &= ~FILE_ATTRIBUTE_READONLY;
196 else
197 fAttr |= FILE_ATTRIBUTE_READONLY;
198 if (!SetFileAttributes(pszPath, fAttr))
199 rc = msc_set_errno(GetLastError());
200 }
201
202 if (pszPathFree)
203 {
204 int saved_errno = errno;
205 free(pszPathFree);
206 errno = saved_errno;
207 }
208 return rc;
209}
210
211
212int msc_chmod(const char *pszPath, mode_t mode)
213{
214 int rc = 0;
215 int saved_errno;
216 int fMustBeDir;
217 char *pszPathFree = msc_fix_path(&pszPath, &fMustBeDir);
218
219 /*
220 * Get the current attributes.
221 */
222 DWORD fAttr = GetFileAttributes(pszPath);
223 if (fAttr == INVALID_FILE_ATTRIBUTES)
224 rc = msc_set_errno(GetLastError());
225 else if (fMustBeDir & !(fAttr & FILE_ATTRIBUTE_DIRECTORY))
226 {
227 errno = ENOTDIR;
228 rc = -1;
229 }
230 else if (fAttr & FILE_ATTRIBUTE_REPARSE_POINT)
231 {
232 errno = ENOSYS; /** @todo resolve symbolic link / rewrite to NtSetInformationFile. */
233 rc = -1;
234 }
235 else
236 {
237 /*
238 * Modify the attributes and try set them.
239 */
240 if (mode & _S_IWRITE)
241 fAttr &= ~FILE_ATTRIBUTE_READONLY;
242 else
243 fAttr |= FILE_ATTRIBUTE_READONLY;
244 if (!SetFileAttributes(pszPath, fAttr))
245 rc = msc_set_errno(GetLastError());
246 }
247
248 if (pszPathFree)
249 {
250 int saved_errno = errno;
251 free(pszPathFree);
252 errno = saved_errno;
253 }
254 return rc;
255}
256
257
258int link(const char *pszDst, const char *pszLink)
259{
260 errno = ENOSYS;
261 err(1, "link() is not implemented on windows!");
262 return -1;
263}
264
265
266int mkdir_msc(const char *path, mode_t mode)
267{
268 int rc = (mkdir)(path);
269 if (rc)
270 {
271 size_t len = strlen(path);
272 if (len > 0 && (path[len - 1] == '/' || path[len - 1] == '\\'))
273 {
274 char *str = strdup(path);
275 while (len > 0 && (str[len - 1] == '/' || str[len - 1] == '\\'))
276 str[--len] = '\0';
277 rc = (mkdir)(str);
278 free(str);
279 }
280 }
281 return rc;
282}
283
284int rmdir_msc(const char *path)
285{
286 int rc = (rmdir)(path);
287 if (rc)
288 {
289 size_t len = strlen(path);
290 if (len > 0 && (path[len - 1] == '/' || path[len - 1] == '\\'))
291 {
292 char *str = strdup(path);
293 while (len > 0 && (str[len - 1] == '/' || str[len - 1] == '\\'))
294 str[--len] = '\0';
295 rc = (rmdir)(str);
296 free(str);
297 }
298 }
299 return rc;
300}
301
302
303static int doname(char *pszX, char *pszEnd)
304{
305 static char s_szChars[] = "Xabcdefghijklmnopqrstuwvxyz1234567890";
306 int rc = 0;
307 do
308 {
309 char ch;
310
311 pszEnd++;
312 ch = *(strchr(s_szChars, *pszEnd) + 1);
313 if (ch)
314 {
315 *pszEnd = ch;
316 return 0;
317 }
318 *pszEnd = 'a';
319 } while (pszEnd != pszX);
320 return 1;
321}
322
323
324int mkstemp(char *temp)
325{
326 char *pszX = strchr(temp, 'X');
327 char *pszEnd = strchr(pszX, '\0');
328 int cTries = 1000;
329 while (--cTries > 0)
330 {
331 int fd;
332 if (doname(pszX, pszEnd))
333 return -1;
334 fd = open(temp, _O_EXCL | _O_CREAT | _O_BINARY | _O_RDWR, 0777);
335 if (fd >= 0)
336 return fd;
337 }
338 return -1;
339}
340
341
342/** Unix to DOS. */
343static char *fix_slashes(char *psz)
344{
345 char *pszRet = psz;
346 for (; *psz; psz++)
347 if (*psz == '/')
348 *psz = '\\';
349 return pszRet;
350}
351
352
353/** Calcs the SYMBOLIC_LINK_FLAG_DIRECTORY flag for CreatesymbolcLink. */
354static DWORD is_directory(const char *pszPath, const char *pszRelativeTo)
355{
356 size_t cchPath = strlen(pszPath);
357 struct stat st;
358 if (cchPath > 0 && pszPath[cchPath - 1] == '\\' || pszPath[cchPath - 1] == '/')
359 return 1; /* SYMBOLIC_LINK_FLAG_DIRECTORY */
360
361 if (stat(pszPath, &st))
362 {
363 size_t cchRelativeTo = strlen(pszRelativeTo);
364 char *psz = malloc(cchPath + cchRelativeTo + 4);
365 memcpy(psz, pszRelativeTo, cchRelativeTo);
366 memcpy(psz + cchRelativeTo, "\\", 1);
367 memcpy(psz + cchRelativeTo + 1, pszPath, cchPath + 1);
368 if (stat(pszPath, &st))
369 st.st_mode = _S_IFREG;
370 free(psz);
371 }
372
373 return (st.st_mode & _S_IFMT) == _S_IFDIR ? 1 : 0;
374}
375
376
377int symlink(const char *pszDst, const char *pszLink)
378{
379 static BOOLEAN (WINAPI *s_pfnCreateSymbolicLinkA)(LPCSTR, LPCSTR, DWORD) = 0;
380 static BOOL s_fTried = FALSE;
381
382 if (!s_fTried)
383 {
384 HMODULE hmod = LoadLibrary("KERNEL32.DLL");
385 if (hmod)
386 *(FARPROC *)&s_pfnCreateSymbolicLinkA = GetProcAddress(hmod, "CreateSymbolicLinkA");
387 s_fTried = TRUE;
388 }
389
390 if (s_pfnCreateSymbolicLinkA)
391 {
392 char *pszDstCopy = fix_slashes(strdup(pszDst));
393 char *pszLinkCopy = fix_slashes(strdup(pszLink));
394 BOOLEAN fRc = s_pfnCreateSymbolicLinkA(pszLinkCopy, pszDstCopy,
395 is_directory(pszDstCopy, pszLinkCopy));
396 DWORD err = GetLastError();
397 free(pszDstCopy);
398 free(pszLinkCopy);
399 if (fRc)
400 return 0;
401 switch (err)
402 {
403 case ERROR_NOT_SUPPORTED: errno = ENOSYS; break;
404 case ERROR_ALREADY_EXISTS:
405 case ERROR_FILE_EXISTS: errno = EEXIST; break;
406 case ERROR_DIRECTORY: errno = ENOTDIR; break;
407 case ERROR_ACCESS_DENIED:
408 case ERROR_PRIVILEGE_NOT_HELD: errno = EPERM; break;
409 default: errno = EINVAL; break;
410 }
411 return -1;
412 }
413
414 errno = ENOSYS;
415 err(1, "symlink() is not implemented on windows!");
416 return -1;
417}
418
419
420#if _MSC_VER < 1400
421int snprintf(char *buf, size_t size, const char *fmt, ...)
422{
423 int cch;
424 va_list args;
425 va_start(args, fmt);
426 cch = vsprintf(buf, fmt, args);
427 va_end(args);
428 return cch;
429}
430#endif
431
432
433int utimes(const char *pszPath, const struct timeval *paTimes)
434{
435 /** @todo implement me! */
436 return 0;
437}
438
439
440int writev(int fd, const struct iovec *vector, int count)
441{
442 int size = 0;
443 int i;
444 for (i = 0; i < count; i++)
445 {
446 int cb = (int)write(fd, vector[i].iov_base, (int)vector[i].iov_len);
447 if (cb < 0)
448 return -1;
449 size += cb;
450 }
451 return size;
452}
453
454
455intmax_t strtoimax(const char *nptr, char **endptr, int base)
456{
457 return strtol(nptr, endptr, base); /** @todo fix this. */
458}
459
460
461uintmax_t strtoumax(const char *nptr, char **endptr, int base)
462{
463 return strtoul(nptr, endptr, base); /** @todo fix this. */
464}
465
466
467int asprintf(char **strp, const char *fmt, ...)
468{
469 int rc;
470 va_list va;
471 va_start(va, fmt);
472 rc = vasprintf(strp, fmt, va);
473 va_end(va);
474 return rc;
475}
476
477
478int vasprintf(char **strp, const char *fmt, va_list va)
479{
480 int rc;
481 char *psz;
482 size_t cb = 1024;
483
484 *strp = NULL;
485 for (;;)
486 {
487 va_list va2;
488
489 psz = malloc(cb);
490 if (!psz)
491 return -1;
492
493#ifdef va_copy
494 va_copy(va2, va);
495 rc = snprintf(psz, cb, fmt, va2);
496 va_end(vaCopy);
497#else
498 va2 = va;
499 rc = snprintf(psz, cb, fmt, va2);
500#endif
501 if (rc < 0 || (size_t)rc < cb)
502 break;
503 cb *= 2;
504 free(psz);
505 }
506
507 *strp = psz;
508 return rc;
509}
510
511
512#undef stat
513/*
514 * Workaround for directory names with trailing slashes.
515 * Added by bird reasons stated.
516 */
517int
518my_other_stat(const char *path, struct stat *st)
519{
520 int rc = stat(path, st);
521 if ( rc != 0
522 && errno == ENOENT
523 && *path != '\0')
524 {
525 char *slash = strchr(path, '\0') - 1;
526 if (*slash == '/' || *slash == '\\')
527 {
528 size_t len_path = slash - path + 1;
529 char *tmp = alloca(len_path + 4);
530 memcpy(tmp, path, len_path);
531 tmp[len_path] = '.';
532 tmp[len_path + 1] = '\0';
533 errno = 0;
534 rc = stat(tmp, st);
535 if ( rc == 0
536 && !S_ISDIR(st->st_mode))
537 {
538 errno = ENOTDIR;
539 rc = -1;
540 }
541 }
542 }
543 return rc;
544}
545
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