4 * Copyright 2002, 2003, 2004 Alexandre Julliard
5 * Copyright 2003 Eric Pouech
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include "wine/port.h"
26 #include <sys/types.h>
28 #ifdef HAVE_SYS_STAT_H
29 # include <sys/stat.h>
37 #include "wine/unicode.h"
38 #include "wine/debug.h"
39 #include "wine/library.h"
41 #include "ntdll_misc.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(file);
45 static const WCHAR DeviceRootW[] = {'\\','\\','.','\\',0};
46 static const WCHAR NTDosPrefixW[] = {'\\','?','?','\\',0};
47 static const WCHAR UncPfxW[] = {'U','N','C','\\',0};
49 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
51 #define MAX_DOS_DRIVES 26
59 /***********************************************************************
62 * Retrieve device/inode number for all the drives. Helper for find_drive_root.
64 static inline int get_drives_info( struct drive_info info[MAX_DOS_DRIVES] )
66 const char *config_dir = wine_get_config_dir();
71 buffer = RtlAllocateHeap( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") );
72 if (!buffer) return 0;
73 strcpy( buffer, config_dir );
74 strcat( buffer, "/dosdevices/a:" );
75 p = buffer + strlen(buffer) - 2;
77 for (i = ret = 0; i < MAX_DOS_DRIVES; i++)
80 if (!stat( buffer, &st ))
82 info[i].dev = st.st_dev;
83 info[i].ino = st.st_ino;
92 RtlFreeHeap( GetProcessHeap(), 0, buffer );
97 /***********************************************************************
98 * remove_last_componentA
100 * Remove the last component of the path. Helper for find_drive_rootA.
102 static inline unsigned int remove_last_componentA( const char *path, unsigned int len )
108 /* find start of the last path component */
109 unsigned int prev = len;
110 if (prev <= 1) break; /* reached root */
111 while (prev > 1 && path[prev - 1] != '/') prev--;
112 /* does removing it take us up a level? */
113 if (len - prev != 1 || path[prev] != '.') /* not '.' */
115 if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */
120 /* strip off trailing slashes */
121 while (prev > 1 && path[prev - 1] == '/') prev--;
128 /***********************************************************************
131 * Find a drive for which the root matches the beginning of the given path.
132 * This can be used to translate a Unix path into a drive + DOS path.
133 * Return value is the drive, or -1 on error. On success, ppath is modified
134 * to point to the beginning of the DOS path.
136 static NTSTATUS find_drive_rootA( LPCSTR *ppath, unsigned int len, int *drive_ret )
138 /* Starting with the full path, check if the device and inode match any of
139 * the wine 'drives'. If not then remove the last path component and try
140 * again. If the last component was a '..' then skip a normal component
141 * since it's a directory that's ascended back out of.
145 const char *path = *ppath;
147 struct drive_info info[MAX_DOS_DRIVES];
149 /* get device and inode of all drives */
150 if (!get_drives_info( info )) return STATUS_OBJECT_PATH_NOT_FOUND;
152 /* strip off trailing slashes */
153 while (len > 1 && path[len - 1] == '/') len--;
155 /* make a copy of the path */
156 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, len + 1 ))) return STATUS_NO_MEMORY;
157 memcpy( buffer, path, len );
162 if (!stat( buffer, &st ) && S_ISDIR( st.st_mode ))
165 for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
167 if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino))
169 if (len == 1) len = 0; /* preserve root slash in returned path */
170 TRACE( "%s -> drive %c:, root=%s, name=%s\n",
171 debugstr_a(path), 'A' + drive, debugstr_a(buffer), debugstr_a(path + len));
174 RtlFreeHeap( GetProcessHeap(), 0, buffer );
175 return STATUS_SUCCESS;
179 if (len <= 1) break; /* reached root */
180 len = remove_last_componentA( buffer, len );
183 RtlFreeHeap( GetProcessHeap(), 0, buffer );
184 return STATUS_OBJECT_PATH_NOT_FOUND;
188 /***********************************************************************
189 * remove_last_componentW
191 * Remove the last component of the path. Helper for find_drive_rootW.
193 static inline int remove_last_componentW( const WCHAR *path, int len )
199 /* find start of the last path component */
201 if (prev <= 1) break; /* reached root */
202 while (prev > 1 && !IS_SEPARATOR(path[prev - 1])) prev--;
203 /* does removing it take us up a level? */
204 if (len - prev != 1 || path[prev] != '.') /* not '.' */
206 if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */
211 /* strip off trailing slashes */
212 while (prev > 1 && IS_SEPARATOR(path[prev - 1])) prev--;
219 /***********************************************************************
222 * Find a drive for which the root matches the beginning of the given path.
223 * This can be used to translate a Unix path into a drive + DOS path.
224 * Return value is the drive, or -1 on error. On success, ppath is modified
225 * to point to the beginning of the DOS path.
227 static int find_drive_rootW( LPCWSTR *ppath )
229 /* Starting with the full path, check if the device and inode match any of
230 * the wine 'drives'. If not then remove the last path component and try
231 * again. If the last component was a '..' then skip a normal component
232 * since it's a directory that's ascended back out of.
234 int drive, lenA, lenW;
236 const WCHAR *path = *ppath;
238 struct drive_info info[MAX_DOS_DRIVES];
240 /* get device and inode of all drives */
241 if (!get_drives_info( info )) return -1;
243 /* strip off trailing slashes */
244 lenW = strlenW(path);
245 while (lenW > 1 && IS_SEPARATOR(path[lenW - 1])) lenW--;
247 /* convert path to Unix encoding */
248 lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL );
249 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, lenA + 1 ))) return -1;
250 lenA = ntdll_wcstoumbs( 0, path, lenW, buffer, lenA, NULL, NULL );
252 for (p = buffer; *p; p++) if (*p == '\\') *p = '/';
256 if (!stat( buffer, &st ) && S_ISDIR( st.st_mode ))
259 for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
261 if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino))
263 if (lenW == 1) lenW = 0; /* preserve root slash in returned path */
264 TRACE( "%s -> drive %c:, root=%s, name=%s\n",
265 debugstr_w(path), 'A' + drive, debugstr_a(buffer), debugstr_w(path + lenW));
267 RtlFreeHeap( GetProcessHeap(), 0, buffer );
272 if (lenW <= 1) break; /* reached root */
273 lenW = remove_last_componentW( path, lenW );
275 /* we only need the new length, buffer already contains the converted string */
276 lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL );
279 RtlFreeHeap( GetProcessHeap(), 0, buffer );
284 /***********************************************************************
285 * RtlDetermineDosPathNameType_U (NTDLL.@)
287 DOS_PATHNAME_TYPE WINAPI RtlDetermineDosPathNameType_U( PCWSTR path )
289 if (IS_SEPARATOR(path[0]))
291 if (!IS_SEPARATOR(path[1])) return ABSOLUTE_PATH; /* "/foo" */
292 if (path[2] != '.') return UNC_PATH; /* "//foo" */
293 if (IS_SEPARATOR(path[3])) return DEVICE_PATH; /* "//./foo" */
294 if (path[3]) return UNC_PATH; /* "//.foo" */
295 return UNC_DOT_PATH; /* "//." */
299 if (!path[0] || path[1] != ':') return RELATIVE_PATH; /* "foo" */
300 if (IS_SEPARATOR(path[2])) return ABSOLUTE_DRIVE_PATH; /* "c:/foo" */
301 return RELATIVE_DRIVE_PATH; /* "c:foo" */
305 /***********************************************************************
306 * RtlIsDosDeviceName_U (NTDLL.@)
308 * Check if the given DOS path contains a DOS device name.
310 * Returns the length of the device name in the low word and its
311 * position in the high word (both in bytes, not WCHARs), or 0 if no
312 * device name is found.
314 ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name )
316 static const WCHAR consoleW[] = {'\\','\\','.','\\','C','O','N',0};
317 static const WCHAR auxW[3] = {'A','U','X'};
318 static const WCHAR comW[3] = {'C','O','M'};
319 static const WCHAR conW[3] = {'C','O','N'};
320 static const WCHAR lptW[3] = {'L','P','T'};
321 static const WCHAR nulW[3] = {'N','U','L'};
322 static const WCHAR prnW[3] = {'P','R','N'};
324 const WCHAR *start, *end, *p;
326 switch(RtlDetermineDosPathNameType_U( dos_name ))
332 if (!strcmpiW( dos_name, consoleW ))
333 return MAKELONG( sizeof(conW), 4 * sizeof(WCHAR) ); /* 4 is length of \\.\ prefix */
339 end = dos_name + strlenW(dos_name) - 1;
340 if (end >= dos_name && *end == ':') end--; /* remove trailing ':' */
342 /* find start of file name */
343 for (start = end; start >= dos_name; start--)
345 if (IS_SEPARATOR(start[0])) break;
346 /* check for ':' but ignore if before extension (for things like NUL:.txt) */
347 if (start[0] == ':' && start[1] != '.') break;
351 /* remove extension */
352 if ((p = strchrW( start, '.' )))
355 if (end >= dos_name && *end == ':') end--; /* remove trailing ':' before extension */
359 /* no extension, remove trailing spaces */
360 while (end >= dos_name && *end == ' ') end--;
363 /* now we have a potential device name between start and end, check it */
364 switch(end - start + 1)
367 if (strncmpiW( start, auxW, 3 ) &&
368 strncmpiW( start, conW, 3 ) &&
369 strncmpiW( start, nulW, 3 ) &&
370 strncmpiW( start, prnW, 3 )) break;
371 return MAKELONG( 3 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
373 if (strncmpiW( start, comW, 3 ) && strncmpiW( start, lptW, 3 )) break;
374 if (*end <= '0' || *end > '9') break;
375 return MAKELONG( 4 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
376 default: /* can't match anything */
383 /**************************************************************************
384 * RtlDosPathNameToNtPathName_U [NTDLL.@]
386 * dos_path: a DOS path name (fully qualified or not)
387 * ntpath: pointer to a UNICODE_STRING to hold the converted
389 * file_part:will point (in ntpath) to the file part in the path
390 * cd: directory reference (optional)
393 * + fill the cd structure
395 BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
396 PUNICODE_STRING ntpath,
400 static const WCHAR LongFileNamePfxW[4] = {'\\','\\','?','\\'};
402 WCHAR local[MAX_PATH];
405 TRACE("(%s,%p,%p,%p)\n",
406 debugstr_w(dos_path), ntpath, file_part, cd);
410 FIXME("Unsupported parameter\n");
411 memset(cd, 0, sizeof(*cd));
414 if (!dos_path || !*dos_path) return FALSE;
416 if (!strncmpW(dos_path, LongFileNamePfxW, 4))
418 ntpath->Length = strlenW(dos_path) * sizeof(WCHAR);
419 ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR);
420 ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
421 if (!ntpath->Buffer) return FALSE;
422 memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength );
423 ntpath->Buffer[1] = '?'; /* change \\?\ to \??\ */
426 if ((ptr = strrchrW( ntpath->Buffer, '\\' )) && ptr[1]) *file_part = ptr + 1;
427 else *file_part = NULL;
433 sz = RtlGetFullPathName_U(dos_path, sizeof(local), ptr, file_part);
434 if (sz == 0) return FALSE;
435 if (sz > sizeof(local))
437 if (!(ptr = RtlAllocateHeap(GetProcessHeap(), 0, sz))) return FALSE;
438 sz = RtlGetFullPathName_U(dos_path, sz, ptr, file_part);
441 ntpath->MaximumLength = sz + (4 /* unc\ */ + 4 /* \??\ */) * sizeof(WCHAR);
442 ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
445 if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
449 strcpyW(ntpath->Buffer, NTDosPrefixW);
450 switch (RtlDetermineDosPathNameType_U(ptr))
452 case UNC_PATH: /* \\foo */
454 strcatW(ntpath->Buffer, UncPfxW);
456 case DEVICE_PATH: /* \\.\foo */
464 strcatW(ntpath->Buffer, ptr + offset);
465 ntpath->Length = strlenW(ntpath->Buffer) * sizeof(WCHAR);
467 if (file_part && *file_part)
468 *file_part = ntpath->Buffer + ntpath->Length / sizeof(WCHAR) - strlenW(*file_part);
470 /* FIXME: cd filling */
472 if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
476 /******************************************************************
479 * Searchs a file of name 'name' into a ';' separated list of paths
481 * Doesn't seem to search elsewhere than the paths list
482 * Stores the result in buffer (file_part will point to the position
483 * of the file name in the buffer)
485 * - how long shall the paths be ??? (MAX_PATH or larger with \\?\ constructs ???)
487 ULONG WINAPI RtlDosSearchPath_U(LPCWSTR paths, LPCWSTR search, LPCWSTR ext,
488 ULONG buffer_size, LPWSTR buffer,
491 DOS_PATHNAME_TYPE type = RtlDetermineDosPathNameType_U(search);
494 if (type == RELATIVE_PATH)
496 ULONG allocated = 0, needed, filelen;
499 filelen = 1 /* for \ */ + strlenW(search) + 1 /* \0 */;
501 /* Windows only checks for '.' without worrying about path components */
502 if (strchrW( search, '.' )) ext = NULL;
503 if (ext != NULL) filelen += strlenW(ext);
509 for (needed = 0, ptr = paths; *ptr != 0 && *ptr++ != ';'; needed++);
510 if (needed + filelen > allocated)
512 if (!name) name = RtlAllocateHeap(GetProcessHeap(), 0,
513 (needed + filelen) * sizeof(WCHAR));
516 WCHAR *newname = RtlReAllocateHeap(GetProcessHeap(), 0, name,
517 (needed + filelen) * sizeof(WCHAR));
518 if (!newname) RtlFreeHeap(GetProcessHeap(), 0, name);
522 allocated = needed + filelen;
524 memmove(name, paths, needed * sizeof(WCHAR));
525 /* append '\\' if none is present */
526 if (needed > 0 && name[needed - 1] != '\\') name[needed++] = '\\';
527 strcpyW(&name[needed], search);
528 if (ext) strcatW(&name[needed], ext);
529 if (RtlDoesFileExists_U(name))
531 len = RtlGetFullPathName_U(name, buffer_size, buffer, file_part);
536 RtlFreeHeap(GetProcessHeap(), 0, name);
538 else if (RtlDoesFileExists_U(search))
540 len = RtlGetFullPathName_U(search, buffer_size, buffer, file_part);
547 /******************************************************************
550 * Helper for RtlGetFullPathName_U.
551 * Get rid of . and .. components in the path.
553 static inline void collapse_path( WCHAR *path, UINT mark )
557 /* convert every / into a \ */
558 for (p = path; *p; p++) if (*p == '/') *p = '\\';
560 /* collapse duplicate backslashes */
561 next = path + max( 1, mark );
562 for (p = next; *p; p++) if (*p != '\\' || next[-1] != '\\') *next++ = *p;
572 case '\\': /* .\ component */
574 memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) );
576 case 0: /* final . */
577 if (p > path + mark) p--;
581 if (p[2] == '\\') /* ..\ component */
587 while (p > path + mark && p[-1] != '\\') p--;
589 memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) );
592 else if (!p[2]) /* final .. */
597 while (p > path + mark && p[-1] != '\\') p--;
598 if (p > path + mark) p--;
606 /* skip to the next component */
607 while (*p && *p != '\\') p++;
610 /* remove last dot in previous dir name */
611 if (p > path + mark && p[-1] == '.') memmove( p-1, p, (strlenW(p) + 1) * sizeof(WCHAR) );
616 /* remove trailing spaces and dots (yes, Windows really does that, don't ask) */
617 while (p > path + mark && (p[-1] == ' ' || p[-1] == '.')) p--;
622 /******************************************************************
625 * Skip the \\share\dir\ part of a file name. Helper for RtlGetFullPathName_U.
627 static const WCHAR *skip_unc_prefix( const WCHAR *ptr )
630 while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */
631 while (IS_SEPARATOR(*ptr)) ptr++;
632 while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */
633 while (IS_SEPARATOR(*ptr)) ptr++;
638 /******************************************************************
639 * get_full_path_helper
641 * Helper for RtlGetFullPathName_U
642 * Note: name and buffer are allowed to point to the same memory spot
644 static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
646 ULONG reqsize = 0, mark = 0, dep = 0, deplen;
647 DOS_PATHNAME_TYPE type;
648 LPWSTR ins_str = NULL;
650 const UNICODE_STRING* cd;
653 /* return error if name only consists of spaces */
654 for (ptr = name; *ptr; ptr++) if (*ptr != ' ') break;
659 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
660 cd = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
662 cd = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
664 switch (type = RtlDetermineDosPathNameType_U(name))
666 case UNC_PATH: /* \\foo */
667 ptr = skip_unc_prefix( name );
671 case DEVICE_PATH: /* \\.\foo */
675 case ABSOLUTE_DRIVE_PATH: /* c:\foo */
676 reqsize = sizeof(WCHAR);
677 tmp[0] = toupperW(name[0]);
683 case RELATIVE_DRIVE_PATH: /* c:foo */
685 if (toupperW(name[0]) != toupperW(cd->Buffer[0]) || cd->Buffer[1] != ':')
687 UNICODE_STRING var, val;
693 var.Length = 3 * sizeof(WCHAR);
694 var.MaximumLength = 4 * sizeof(WCHAR);
697 val.MaximumLength = size;
698 val.Buffer = RtlAllocateHeap(GetProcessHeap(), 0, size);
700 switch (RtlQueryEnvironmentVariable_U(NULL, &var, &val))
703 /* FIXME: Win2k seems to check that the environment variable actually points
704 * to an existing directory. If not, root of the drive is used
705 * (this seems also to be the only spot in RtlGetFullPathName that the
706 * existence of a part of a path is checked)
709 case STATUS_BUFFER_TOO_SMALL:
710 reqsize = val.Length + sizeof(WCHAR); /* append trailing '\\' */
711 val.Buffer[val.Length / sizeof(WCHAR)] = '\\';
712 ins_str = val.Buffer;
714 case STATUS_VARIABLE_NOT_FOUND:
715 reqsize = 3 * sizeof(WCHAR);
722 ERR("Unsupported status code\n");
730 case RELATIVE_PATH: /* foo */
731 reqsize = cd->Length;
732 ins_str = cd->Buffer;
733 if (cd->Buffer[1] != ':')
735 ptr = skip_unc_prefix( cd->Buffer );
736 mark = ptr - cd->Buffer;
741 case ABSOLUTE_PATH: /* \xxx */
742 if (name[0] == '/') /* may be a Unix path */
744 const WCHAR *ptr = name;
745 int drive = find_drive_rootW( &ptr );
748 reqsize = 3 * sizeof(WCHAR);
749 tmp[0] = 'A' + drive;
758 if (cd->Buffer[1] == ':')
760 reqsize = 2 * sizeof(WCHAR);
761 tmp[0] = cd->Buffer[0];
768 ptr = skip_unc_prefix( cd->Buffer );
769 reqsize = (ptr - cd->Buffer) * sizeof(WCHAR);
770 mark = reqsize / sizeof(WCHAR);
771 ins_str = cd->Buffer;
775 case UNC_DOT_PATH: /* \\. */
776 reqsize = 4 * sizeof(WCHAR);
791 deplen = strlenW(name + dep) * sizeof(WCHAR);
792 if (reqsize + deplen + sizeof(WCHAR) > size)
794 /* not enough space, return need size (including terminating '\0') */
795 reqsize += deplen + sizeof(WCHAR);
799 memmove(buffer + reqsize / sizeof(WCHAR), name + dep, deplen + sizeof(WCHAR));
800 if (reqsize) memcpy(buffer, ins_str, reqsize);
803 if (ins_str && ins_str != tmp && ins_str != cd->Buffer)
804 RtlFreeHeap(GetProcessHeap(), 0, ins_str);
806 collapse_path( buffer, mark );
807 reqsize = strlenW(buffer) * sizeof(WCHAR);
814 /******************************************************************
815 * RtlGetFullPathName_U (NTDLL.@)
817 * Returns the number of bytes written to buffer (not including the
818 * terminating NULL) if the function succeeds, or the required number of bytes
819 * (including the terminating NULL) if the buffer is too small.
821 * file_part will point to the filename part inside buffer (except if we use
822 * DOS device name, in which case file_in_buf is NULL)
825 DWORD WINAPI RtlGetFullPathName_U(const WCHAR* name, ULONG size, WCHAR* buffer,
832 TRACE("(%s %lu %p %p)\n", debugstr_w(name), size, buffer, file_part);
834 if (!name || !*name) return 0;
836 if (file_part) *file_part = NULL;
838 /* check for DOS device name */
839 dosdev = RtlIsDosDeviceName_U(name);
842 DWORD offset = HIWORD(dosdev) / sizeof(WCHAR); /* get it in WCHARs, not bytes */
843 DWORD sz = LOWORD(dosdev); /* in bytes */
845 if (8 + sz + 2 > size) return sz + 10;
846 strcpyW(buffer, DeviceRootW);
847 memmove(buffer + 4, name + offset, sz);
848 buffer[4 + sz / sizeof(WCHAR)] = '\0';
849 /* file_part isn't set in this case */
853 reqsize = get_full_path_helper(name, buffer, size);
854 if (!reqsize) return 0;
857 LPWSTR tmp = RtlAllocateHeap(GetProcessHeap(), 0, reqsize);
858 reqsize = get_full_path_helper(name, tmp, reqsize);
859 if (reqsize > size) /* it may have worked the second time */
861 RtlFreeHeap(GetProcessHeap(), 0, tmp);
862 return reqsize + sizeof(WCHAR);
864 memcpy( buffer, tmp, reqsize + sizeof(WCHAR) );
865 RtlFreeHeap(GetProcessHeap(), 0, tmp);
869 if (file_part && (ptr = strrchrW(buffer, '\\')) != NULL && ptr >= buffer + 2 && *++ptr)
874 /*************************************************************************
875 * RtlGetLongestNtPathLength [NTDLL.@]
877 * Get the longest allowed path length
883 * The longest allowed path length (277 characters under Win2k).
885 DWORD WINAPI RtlGetLongestNtPathLength(void)
887 return MAX_NT_PATH_LENGTH;
890 /******************************************************************
891 * RtlIsNameLegalDOS8Dot3 (NTDLL.@)
893 * Returns TRUE iff unicode is a valid DOS (8+3) name.
894 * If the name is valid, oem gets filled with the corresponding OEM string
895 * spaces is set to TRUE if unicode contains spaces
897 BOOLEAN WINAPI RtlIsNameLegalDOS8Dot3( const UNICODE_STRING *unicode,
898 OEM_STRING *oem, BOOLEAN *spaces )
900 static const char* illegal = "*?<>|\"+=,;[]:/\\\345";
905 BOOLEAN got_space = FALSE;
909 oem_str.Length = sizeof(buffer);
910 oem_str.MaximumLength = sizeof(buffer);
911 oem_str.Buffer = buffer;
914 if (RtlUpcaseUnicodeStringToCountedOemString( oem, unicode, FALSE ) != STATUS_SUCCESS)
917 if (oem->Length > 12) return FALSE;
919 /* a starting . is invalid, except for . and .. */
920 if (oem->Buffer[0] == '.')
922 if (oem->Length != 1 && (oem->Length != 2 || oem->Buffer[1] != '.')) return FALSE;
923 if (spaces) *spaces = FALSE;
927 for (i = 0; i < oem->Length; i++)
929 switch (oem->Buffer[i])
932 /* leading/trailing spaces not allowed */
933 if (!i || i == oem->Length-1 || oem->Buffer[i+1] == '.') return FALSE;
937 if (dot != -1) return FALSE;
941 if (strchr(illegal, oem->Buffer[i])) return FALSE;
945 /* check file part is shorter than 8, extension shorter than 3
946 * dot cannot be last in string
950 if (oem->Length > 8) return FALSE;
954 if (dot > 8 || (oem->Length - dot > 4) || dot == oem->Length - 1) return FALSE;
956 if (spaces) *spaces = got_space;
960 /******************************************************************
961 * RtlGetCurrentDirectory_U (NTDLL.@)
964 NTSTATUS WINAPI RtlGetCurrentDirectory_U(ULONG buflen, LPWSTR buf)
969 TRACE("(%lu %p)\n", buflen, buf);
973 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
974 us = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
976 us = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
978 len = us->Length / sizeof(WCHAR);
979 if (us->Buffer[len - 1] == '\\' && us->Buffer[len - 2] != ':')
982 if (buflen / sizeof(WCHAR) > len)
984 memcpy(buf, us->Buffer, len * sizeof(WCHAR));
994 return len * sizeof(WCHAR);
997 /******************************************************************
998 * RtlSetCurrentDirectory_U (NTDLL.@)
1001 NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir)
1003 FILE_FS_DEVICE_INFORMATION device_info;
1004 OBJECT_ATTRIBUTES attr;
1005 UNICODE_STRING newdir;
1013 newdir.Buffer = NULL;
1015 RtlAcquirePebLock();
1017 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
1018 curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
1020 curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
1022 if (!RtlDosPathNameToNtPathName_U( dir->Buffer, &newdir, NULL, NULL ))
1024 nts = STATUS_OBJECT_NAME_INVALID;
1028 attr.Length = sizeof(attr);
1029 attr.RootDirectory = 0;
1030 attr.Attributes = OBJ_CASE_INSENSITIVE;
1031 attr.ObjectName = &newdir;
1032 attr.SecurityDescriptor = NULL;
1033 attr.SecurityQualityOfService = NULL;
1035 nts = NtOpenFile( &handle, 0, &attr, &io, 0, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
1036 if (nts != STATUS_SUCCESS) goto out;
1038 /* don't keep the directory handle open on removable media */
1039 if (!NtQueryVolumeInformationFile( handle, &io, &device_info,
1040 sizeof(device_info), FileFsDeviceInformation ) &&
1041 (device_info.Characteristics & FILE_REMOVABLE_MEDIA))
1047 if (curdir->Handle) NtClose( curdir->Handle );
1048 curdir->Handle = handle;
1050 /* append trailing \ if missing */
1051 size = newdir.Length / sizeof(WCHAR);
1052 ptr = newdir.Buffer;
1053 ptr += 4; /* skip \??\ prefix */
1055 if (size && ptr[size - 1] != '\\') ptr[size++] = '\\';
1057 memcpy( curdir->DosPath.Buffer, ptr, size * sizeof(WCHAR));
1058 curdir->DosPath.Buffer[size] = 0;
1059 curdir->DosPath.Length = size * sizeof(WCHAR);
1061 TRACE( "curdir now %s %p\n", debugstr_w(curdir->DosPath.Buffer), curdir->Handle );
1064 RtlFreeUnicodeString( &newdir );
1065 RtlReleasePebLock();
1070 /******************************************************************
1071 * wine_unix_to_nt_file_name (NTDLL.@) Not a Windows API
1073 NTSTATUS wine_unix_to_nt_file_name( const ANSI_STRING *name, UNICODE_STRING *nt )
1075 static const WCHAR prefixW[] = {'\\','?','?','\\','a',':','\\'};
1076 unsigned int lenW, lenA = name->Length;
1077 const char *path = name->Buffer;
1083 if (!lenA || path[0] != '/')
1088 if ((status = DIR_get_unix_cwd( &cwd )) != STATUS_SUCCESS) return status;
1090 size = strlen(cwd) + lenA + 1;
1091 if (!(newcwd = RtlReAllocateHeap( GetProcessHeap(), 0, cwd, size )))
1093 status = STATUS_NO_MEMORY;
1097 end = cwd + strlen(cwd);
1098 if (end > cwd && end[-1] != '/') *end++ = '/';
1099 memcpy( end, path, lenA );
1103 status = find_drive_rootA( &path, lenA, &drive );
1104 lenA -= (path - cwd);
1109 status = find_drive_rootA( &path, lenA, &drive );
1110 lenA -= (path - name->Buffer);
1113 if (status != STATUS_SUCCESS) goto done;
1114 while (lenA && path[0] == '/') { lenA--; path++; }
1116 lenW = ntdll_umbstowcs( 0, path, lenA, NULL, 0 );
1117 if (!(nt->Buffer = RtlAllocateHeap( GetProcessHeap(), 0,
1118 (lenW + 1) * sizeof(WCHAR) + sizeof(prefixW) )))
1120 status = STATUS_NO_MEMORY;
1124 memcpy( nt->Buffer, prefixW, sizeof(prefixW) );
1125 nt->Buffer[4] += drive;
1126 ntdll_umbstowcs( 0, path, lenA, nt->Buffer + sizeof(prefixW)/sizeof(WCHAR), lenW );
1127 lenW += sizeof(prefixW)/sizeof(WCHAR);
1128 nt->Buffer[lenW] = 0;
1129 nt->Length = lenW * sizeof(WCHAR);
1130 nt->MaximumLength = nt->Length + sizeof(WCHAR);
1131 for (p = nt->Buffer + sizeof(prefixW)/sizeof(WCHAR); *p; p++) if (*p == '/') *p = '\\';
1134 RtlFreeHeap( GetProcessHeap(), 0, cwd );