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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 #include "wine/port.h"
26 #include <sys/types.h>
28 #ifdef HAVE_SYS_STAT_H
29 # include <sys/stat.h>
36 #define WIN32_NO_STATUS
39 #include "wine/unicode.h"
40 #include "wine/debug.h"
41 #include "wine/library.h"
43 #include "ntdll_misc.h"
45 WINE_DEFAULT_DEBUG_CHANNEL(file);
47 static const WCHAR DeviceRootW[] = {'\\','\\','.','\\',0};
48 static const WCHAR NTDosPrefixW[] = {'\\','?','?','\\',0};
49 static const WCHAR UncPfxW[] = {'U','N','C','\\',0};
51 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
53 #define MAX_DOS_DRIVES 26
61 /***********************************************************************
64 * Retrieve device/inode number for all the drives. Helper for find_drive_root.
66 static inline int get_drives_info( struct drive_info info[MAX_DOS_DRIVES] )
68 const char *config_dir = wine_get_config_dir();
73 buffer = RtlAllocateHeap( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") );
74 if (!buffer) return 0;
75 strcpy( buffer, config_dir );
76 strcat( buffer, "/dosdevices/a:" );
77 p = buffer + strlen(buffer) - 2;
79 for (i = ret = 0; i < MAX_DOS_DRIVES; i++)
82 if (!stat( buffer, &st ))
84 info[i].dev = st.st_dev;
85 info[i].ino = st.st_ino;
94 RtlFreeHeap( GetProcessHeap(), 0, buffer );
99 /***********************************************************************
100 * remove_last_componentA
102 * Remove the last component of the path. Helper for find_drive_rootA.
104 static inline unsigned int remove_last_componentA( const char *path, unsigned int len )
110 /* find start of the last path component */
111 unsigned int prev = len;
112 if (prev <= 1) break; /* reached root */
113 while (prev > 1 && path[prev - 1] != '/') prev--;
114 /* does removing it take us up a level? */
115 if (len - prev != 1 || path[prev] != '.') /* not '.' */
117 if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */
122 /* strip off trailing slashes */
123 while (prev > 1 && path[prev - 1] == '/') prev--;
130 /***********************************************************************
133 * Find a drive for which the root matches the beginning of the given path.
134 * This can be used to translate a Unix path into a drive + DOS path.
135 * Return value is the drive, or -1 on error. On success, ppath is modified
136 * to point to the beginning of the DOS path.
138 static NTSTATUS find_drive_rootA( LPCSTR *ppath, unsigned int len, int *drive_ret )
140 /* Starting with the full path, check if the device and inode match any of
141 * the wine 'drives'. If not then remove the last path component and try
142 * again. If the last component was a '..' then skip a normal component
143 * since it's a directory that's ascended back out of.
147 const char *path = *ppath;
149 struct drive_info info[MAX_DOS_DRIVES];
151 /* get device and inode of all drives */
152 if (!get_drives_info( info )) return STATUS_OBJECT_PATH_NOT_FOUND;
154 /* strip off trailing slashes */
155 while (len > 1 && path[len - 1] == '/') len--;
157 /* make a copy of the path */
158 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, len + 1 ))) return STATUS_NO_MEMORY;
159 memcpy( buffer, path, len );
164 if (!stat( buffer, &st ) && S_ISDIR( st.st_mode ))
167 for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
169 if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino))
171 if (len == 1) len = 0; /* preserve root slash in returned path */
172 TRACE( "%s -> drive %c:, root=%s, name=%s\n",
173 debugstr_a(path), 'A' + drive, debugstr_a(buffer), debugstr_a(path + len));
176 RtlFreeHeap( GetProcessHeap(), 0, buffer );
177 return STATUS_SUCCESS;
181 if (len <= 1) break; /* reached root */
182 len = remove_last_componentA( buffer, len );
185 RtlFreeHeap( GetProcessHeap(), 0, buffer );
186 return STATUS_OBJECT_PATH_NOT_FOUND;
190 /***********************************************************************
191 * remove_last_componentW
193 * Remove the last component of the path. Helper for find_drive_rootW.
195 static inline int remove_last_componentW( const WCHAR *path, int len )
201 /* find start of the last path component */
203 if (prev <= 1) break; /* reached root */
204 while (prev > 1 && !IS_SEPARATOR(path[prev - 1])) prev--;
205 /* does removing it take us up a level? */
206 if (len - prev != 1 || path[prev] != '.') /* not '.' */
208 if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */
213 /* strip off trailing slashes */
214 while (prev > 1 && IS_SEPARATOR(path[prev - 1])) prev--;
221 /***********************************************************************
224 * Find a drive for which the root matches the beginning of the given path.
225 * This can be used to translate a Unix path into a drive + DOS path.
226 * Return value is the drive, or -1 on error. On success, ppath is modified
227 * to point to the beginning of the DOS path.
229 static int find_drive_rootW( LPCWSTR *ppath )
231 /* Starting with the full path, check if the device and inode match any of
232 * the wine 'drives'. If not then remove the last path component and try
233 * again. If the last component was a '..' then skip a normal component
234 * since it's a directory that's ascended back out of.
236 int drive, lenA, lenW;
238 const WCHAR *path = *ppath;
240 struct drive_info info[MAX_DOS_DRIVES];
242 /* get device and inode of all drives */
243 if (!get_drives_info( info )) return -1;
245 /* strip off trailing slashes */
246 lenW = strlenW(path);
247 while (lenW > 1 && IS_SEPARATOR(path[lenW - 1])) lenW--;
249 /* convert path to Unix encoding */
250 lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL );
251 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, lenA + 1 ))) return -1;
252 lenA = ntdll_wcstoumbs( 0, path, lenW, buffer, lenA, NULL, NULL );
254 for (p = buffer; *p; p++) if (*p == '\\') *p = '/';
258 if (!stat( buffer, &st ) && S_ISDIR( st.st_mode ))
261 for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
263 if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino))
265 if (lenW == 1) lenW = 0; /* preserve root slash in returned path */
266 TRACE( "%s -> drive %c:, root=%s, name=%s\n",
267 debugstr_w(path), 'A' + drive, debugstr_a(buffer), debugstr_w(path + lenW));
269 RtlFreeHeap( GetProcessHeap(), 0, buffer );
274 if (lenW <= 1) break; /* reached root */
275 lenW = remove_last_componentW( path, lenW );
277 /* we only need the new length, buffer already contains the converted string */
278 lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL );
281 RtlFreeHeap( GetProcessHeap(), 0, buffer );
286 /***********************************************************************
287 * RtlDetermineDosPathNameType_U (NTDLL.@)
289 DOS_PATHNAME_TYPE WINAPI RtlDetermineDosPathNameType_U( PCWSTR path )
291 if (IS_SEPARATOR(path[0]))
293 if (!IS_SEPARATOR(path[1])) return ABSOLUTE_PATH; /* "/foo" */
294 if (path[2] != '.') return UNC_PATH; /* "//foo" */
295 if (IS_SEPARATOR(path[3])) return DEVICE_PATH; /* "//./foo" */
296 if (path[3]) return UNC_PATH; /* "//.foo" */
297 return UNC_DOT_PATH; /* "//." */
301 if (!path[0] || path[1] != ':') return RELATIVE_PATH; /* "foo" */
302 if (IS_SEPARATOR(path[2])) return ABSOLUTE_DRIVE_PATH; /* "c:/foo" */
303 return RELATIVE_DRIVE_PATH; /* "c:foo" */
307 /***********************************************************************
308 * RtlIsDosDeviceName_U (NTDLL.@)
310 * Check if the given DOS path contains a DOS device name.
312 * Returns the length of the device name in the low word and its
313 * position in the high word (both in bytes, not WCHARs), or 0 if no
314 * device name is found.
316 ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name )
318 static const WCHAR consoleW[] = {'\\','\\','.','\\','C','O','N',0};
319 static const WCHAR auxW[3] = {'A','U','X'};
320 static const WCHAR comW[3] = {'C','O','M'};
321 static const WCHAR conW[3] = {'C','O','N'};
322 static const WCHAR lptW[3] = {'L','P','T'};
323 static const WCHAR nulW[3] = {'N','U','L'};
324 static const WCHAR prnW[3] = {'P','R','N'};
326 const WCHAR *start, *end, *p;
328 switch(RtlDetermineDosPathNameType_U( dos_name ))
334 if (!strcmpiW( dos_name, consoleW ))
335 return MAKELONG( sizeof(conW), 4 * sizeof(WCHAR) ); /* 4 is length of \\.\ prefix */
341 end = dos_name + strlenW(dos_name) - 1;
342 while (end >= dos_name && *end == ':') end--; /* remove all trailing ':' */
344 /* find start of file name */
345 for (start = end; start >= dos_name; start--)
347 if (IS_SEPARATOR(start[0])) break;
348 /* check for ':' but ignore if before extension (for things like NUL:.txt) */
349 if (start[0] == ':' && start[1] != '.') break;
353 /* remove extension */
354 if ((p = strchrW( start, '.' )))
357 if (end >= dos_name && *end == ':') end--; /* remove trailing ':' before extension */
359 /* remove trailing spaces */
360 while (end >= dos_name && *end == ' ') end--;
362 /* now we have a potential device name between start and end, check it */
363 switch(end - start + 1)
366 if (strncmpiW( start, auxW, 3 ) &&
367 strncmpiW( start, conW, 3 ) &&
368 strncmpiW( start, nulW, 3 ) &&
369 strncmpiW( start, prnW, 3 )) break;
370 return MAKELONG( 3 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
372 if (strncmpiW( start, comW, 3 ) && strncmpiW( start, lptW, 3 )) break;
373 if (*end <= '0' || *end > '9') break;
374 return MAKELONG( 4 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
375 default: /* can't match anything */
382 /**************************************************************************
383 * RtlDosPathNameToNtPathName_U [NTDLL.@]
385 * dos_path: a DOS path name (fully qualified or not)
386 * ntpath: pointer to a UNICODE_STRING to hold the converted
388 * file_part:will point (in ntpath) to the file part in the path
389 * cd: directory reference (optional)
392 * + fill the cd structure
394 BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
395 PUNICODE_STRING ntpath,
399 static const WCHAR LongFileNamePfxW[4] = {'\\','\\','?','\\'};
401 WCHAR local[MAX_PATH];
404 TRACE("(%s,%p,%p,%p)\n",
405 debugstr_w(dos_path), ntpath, file_part, cd);
409 FIXME("Unsupported parameter\n");
410 memset(cd, 0, sizeof(*cd));
413 if (!dos_path || !*dos_path) return FALSE;
415 if (!strncmpW(dos_path, LongFileNamePfxW, 4))
417 ntpath->Length = strlenW(dos_path) * sizeof(WCHAR);
418 ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR);
419 ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
420 if (!ntpath->Buffer) return FALSE;
421 memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength );
422 ntpath->Buffer[1] = '?'; /* change \\?\ to \??\ */
425 if ((ptr = strrchrW( ntpath->Buffer, '\\' )) && ptr[1]) *file_part = ptr + 1;
426 else *file_part = NULL;
432 sz = RtlGetFullPathName_U(dos_path, sizeof(local), ptr, file_part);
433 if (sz == 0) return FALSE;
434 if (sz > sizeof(local))
436 if (!(ptr = RtlAllocateHeap(GetProcessHeap(), 0, sz))) return FALSE;
437 sz = RtlGetFullPathName_U(dos_path, sz, ptr, file_part);
440 ntpath->MaximumLength = sz + (4 /* unc\ */ + 4 /* \??\ */) * sizeof(WCHAR);
441 ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
444 if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
448 strcpyW(ntpath->Buffer, NTDosPrefixW);
449 switch (RtlDetermineDosPathNameType_U(ptr))
451 case UNC_PATH: /* \\foo */
453 strcatW(ntpath->Buffer, UncPfxW);
455 case DEVICE_PATH: /* \\.\foo */
463 strcatW(ntpath->Buffer, ptr + offset);
464 ntpath->Length = strlenW(ntpath->Buffer) * sizeof(WCHAR);
466 if (file_part && *file_part)
467 *file_part = ntpath->Buffer + ntpath->Length / sizeof(WCHAR) - strlenW(*file_part);
469 /* FIXME: cd filling */
471 if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
475 /******************************************************************
478 * Searchs a file of name 'name' into a ';' separated list of paths
480 * Doesn't seem to search elsewhere than the paths list
481 * Stores the result in buffer (file_part will point to the position
482 * of the file name in the buffer)
484 * - how long shall the paths be ??? (MAX_PATH or larger with \\?\ constructs ???)
486 ULONG WINAPI RtlDosSearchPath_U(LPCWSTR paths, LPCWSTR search, LPCWSTR ext,
487 ULONG buffer_size, LPWSTR buffer,
490 DOS_PATHNAME_TYPE type = RtlDetermineDosPathNameType_U(search);
493 if (type == RELATIVE_PATH)
495 ULONG allocated = 0, needed, filelen;
498 filelen = 1 /* for \ */ + strlenW(search) + 1 /* \0 */;
500 /* Windows only checks for '.' without worrying about path components */
501 if (strchrW( search, '.' )) ext = NULL;
502 if (ext != NULL) filelen += strlenW(ext);
508 for (needed = 0, ptr = paths; *ptr != 0 && *ptr++ != ';'; needed++);
509 if (needed + filelen > allocated)
511 if (!name) name = RtlAllocateHeap(GetProcessHeap(), 0,
512 (needed + filelen) * sizeof(WCHAR));
515 WCHAR *newname = RtlReAllocateHeap(GetProcessHeap(), 0, name,
516 (needed + filelen) * sizeof(WCHAR));
517 if (!newname) RtlFreeHeap(GetProcessHeap(), 0, name);
521 allocated = needed + filelen;
523 memmove(name, paths, needed * sizeof(WCHAR));
524 /* append '\\' if none is present */
525 if (needed > 0 && name[needed - 1] != '\\') name[needed++] = '\\';
526 strcpyW(&name[needed], search);
527 if (ext) strcatW(&name[needed], ext);
528 if (RtlDoesFileExists_U(name))
530 len = RtlGetFullPathName_U(name, buffer_size, buffer, file_part);
535 RtlFreeHeap(GetProcessHeap(), 0, name);
537 else if (RtlDoesFileExists_U(search))
539 len = RtlGetFullPathName_U(search, buffer_size, buffer, file_part);
546 /******************************************************************
549 * Helper for RtlGetFullPathName_U.
550 * Get rid of . and .. components in the path.
552 static inline void collapse_path( WCHAR *path, UINT mark )
556 /* convert every / into a \ */
557 for (p = path; *p; p++) if (*p == '/') *p = '\\';
559 /* collapse duplicate backslashes */
560 next = path + max( 1, mark );
561 for (p = next; *p; p++) if (*p != '\\' || next[-1] != '\\') *next++ = *p;
571 case '\\': /* .\ component */
573 memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) );
575 case 0: /* final . */
576 if (p > path + mark) p--;
580 if (p[2] == '\\') /* ..\ component */
586 while (p > path + mark && p[-1] != '\\') p--;
588 memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) );
591 else if (!p[2]) /* final .. */
596 while (p > path + mark && p[-1] != '\\') p--;
597 if (p > path + mark) p--;
605 /* skip to the next component */
606 while (*p && *p != '\\') p++;
609 /* remove last dot in previous dir name */
610 if (p > path + mark && p[-1] == '.') memmove( p-1, p, (strlenW(p) + 1) * sizeof(WCHAR) );
615 /* remove trailing spaces and dots (yes, Windows really does that, don't ask) */
616 while (p > path + mark && (p[-1] == ' ' || p[-1] == '.')) p--;
621 /******************************************************************
624 * Skip the \\share\dir\ part of a file name. Helper for RtlGetFullPathName_U.
626 static const WCHAR *skip_unc_prefix( const WCHAR *ptr )
629 while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */
630 while (IS_SEPARATOR(*ptr)) ptr++;
631 while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */
632 while (IS_SEPARATOR(*ptr)) ptr++;
637 /******************************************************************
638 * get_full_path_helper
640 * Helper for RtlGetFullPathName_U
641 * Note: name and buffer are allowed to point to the same memory spot
643 static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
645 ULONG reqsize = 0, mark = 0, dep = 0, deplen;
646 DOS_PATHNAME_TYPE type;
647 LPWSTR ins_str = NULL;
649 const UNICODE_STRING* cd;
652 /* return error if name only consists of spaces */
653 for (ptr = name; *ptr; ptr++) if (*ptr != ' ') break;
658 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
659 cd = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
661 cd = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
663 switch (type = RtlDetermineDosPathNameType_U(name))
665 case UNC_PATH: /* \\foo */
666 ptr = skip_unc_prefix( name );
670 case DEVICE_PATH: /* \\.\foo */
674 case ABSOLUTE_DRIVE_PATH: /* c:\foo */
675 reqsize = sizeof(WCHAR);
676 tmp[0] = toupperW(name[0]);
682 case RELATIVE_DRIVE_PATH: /* c:foo */
684 if (toupperW(name[0]) != toupperW(cd->Buffer[0]) || cd->Buffer[1] != ':')
686 UNICODE_STRING var, val;
692 var.Length = 3 * sizeof(WCHAR);
693 var.MaximumLength = 4 * sizeof(WCHAR);
696 val.MaximumLength = size;
697 val.Buffer = RtlAllocateHeap(GetProcessHeap(), 0, size);
699 switch (RtlQueryEnvironmentVariable_U(NULL, &var, &val))
702 /* FIXME: Win2k seems to check that the environment variable actually points
703 * to an existing directory. If not, root of the drive is used
704 * (this seems also to be the only spot in RtlGetFullPathName that the
705 * existence of a part of a path is checked)
708 case STATUS_BUFFER_TOO_SMALL:
709 reqsize = val.Length + sizeof(WCHAR); /* append trailing '\\' */
710 val.Buffer[val.Length / sizeof(WCHAR)] = '\\';
711 ins_str = val.Buffer;
713 case STATUS_VARIABLE_NOT_FOUND:
714 reqsize = 3 * sizeof(WCHAR);
721 ERR("Unsupported status code\n");
729 case RELATIVE_PATH: /* foo */
730 reqsize = cd->Length;
731 ins_str = cd->Buffer;
732 if (cd->Buffer[1] != ':')
734 ptr = skip_unc_prefix( cd->Buffer );
735 mark = ptr - cd->Buffer;
740 case ABSOLUTE_PATH: /* \xxx */
741 if (name[0] == '/') /* may be a Unix path */
743 const WCHAR *ptr = name;
744 int drive = find_drive_rootW( &ptr );
747 reqsize = 3 * sizeof(WCHAR);
748 tmp[0] = 'A' + drive;
757 if (cd->Buffer[1] == ':')
759 reqsize = 2 * sizeof(WCHAR);
760 tmp[0] = cd->Buffer[0];
767 ptr = skip_unc_prefix( cd->Buffer );
768 reqsize = (ptr - cd->Buffer) * sizeof(WCHAR);
769 mark = reqsize / sizeof(WCHAR);
770 ins_str = cd->Buffer;
774 case UNC_DOT_PATH: /* \\. */
775 reqsize = 4 * sizeof(WCHAR);
790 deplen = strlenW(name + dep) * sizeof(WCHAR);
791 if (reqsize + deplen + sizeof(WCHAR) > size)
793 /* not enough space, return need size (including terminating '\0') */
794 reqsize += deplen + sizeof(WCHAR);
798 memmove(buffer + reqsize / sizeof(WCHAR), name + dep, deplen + sizeof(WCHAR));
799 if (reqsize) memcpy(buffer, ins_str, reqsize);
802 if (ins_str != tmp && ins_str != cd->Buffer)
803 RtlFreeHeap(GetProcessHeap(), 0, ins_str);
805 collapse_path( buffer, mark );
806 reqsize = strlenW(buffer) * sizeof(WCHAR);
813 /******************************************************************
814 * RtlGetFullPathName_U (NTDLL.@)
816 * Returns the number of bytes written to buffer (not including the
817 * terminating NULL) if the function succeeds, or the required number of bytes
818 * (including the terminating NULL) if the buffer is too small.
820 * file_part will point to the filename part inside buffer (except if we use
821 * DOS device name, in which case file_in_buf is NULL)
824 DWORD WINAPI RtlGetFullPathName_U(const WCHAR* name, ULONG size, WCHAR* buffer,
831 TRACE("(%s %u %p %p)\n", debugstr_w(name), size, buffer, file_part);
833 if (!name || !*name) return 0;
835 if (file_part) *file_part = NULL;
837 /* check for DOS device name */
838 dosdev = RtlIsDosDeviceName_U(name);
841 DWORD offset = HIWORD(dosdev) / sizeof(WCHAR); /* get it in WCHARs, not bytes */
842 DWORD sz = LOWORD(dosdev); /* in bytes */
844 if (8 + sz + 2 > size) return sz + 10;
845 strcpyW(buffer, DeviceRootW);
846 memmove(buffer + 4, name + offset, sz);
847 buffer[4 + sz / sizeof(WCHAR)] = '\0';
848 /* file_part isn't set in this case */
852 reqsize = get_full_path_helper(name, buffer, size);
853 if (!reqsize) return 0;
856 LPWSTR tmp = RtlAllocateHeap(GetProcessHeap(), 0, reqsize);
857 reqsize = get_full_path_helper(name, tmp, reqsize);
858 if (reqsize > size) /* it may have worked the second time */
860 RtlFreeHeap(GetProcessHeap(), 0, tmp);
861 return reqsize + sizeof(WCHAR);
863 memcpy( buffer, tmp, reqsize + sizeof(WCHAR) );
864 RtlFreeHeap(GetProcessHeap(), 0, tmp);
868 if (file_part && (ptr = strrchrW(buffer, '\\')) != NULL && ptr >= buffer + 2 && *++ptr)
873 /*************************************************************************
874 * RtlGetLongestNtPathLength [NTDLL.@]
876 * Get the longest allowed path length
882 * The longest allowed path length (277 characters under Win2k).
884 DWORD WINAPI RtlGetLongestNtPathLength(void)
886 return MAX_NT_PATH_LENGTH;
889 /******************************************************************
890 * RtlIsNameLegalDOS8Dot3 (NTDLL.@)
892 * Returns TRUE iff unicode is a valid DOS (8+3) name.
893 * If the name is valid, oem gets filled with the corresponding OEM string
894 * spaces is set to TRUE if unicode contains spaces
896 BOOLEAN WINAPI RtlIsNameLegalDOS8Dot3( const UNICODE_STRING *unicode,
897 OEM_STRING *oem, BOOLEAN *spaces )
899 static const char illegal[] = "*?<>|\"+=,;[]:/\\\345";
904 BOOLEAN got_space = FALSE;
908 oem_str.Length = sizeof(buffer);
909 oem_str.MaximumLength = sizeof(buffer);
910 oem_str.Buffer = buffer;
913 if (RtlUpcaseUnicodeStringToCountedOemString( oem, unicode, FALSE ) != STATUS_SUCCESS)
916 if (oem->Length > 12) return FALSE;
918 /* a starting . is invalid, except for . and .. */
919 if (oem->Buffer[0] == '.')
921 if (oem->Length != 1 && (oem->Length != 2 || oem->Buffer[1] != '.')) return FALSE;
922 if (spaces) *spaces = FALSE;
926 for (i = 0; i < oem->Length; i++)
928 switch (oem->Buffer[i])
931 /* leading/trailing spaces not allowed */
932 if (!i || i == oem->Length-1 || oem->Buffer[i+1] == '.') return FALSE;
936 if (dot != -1) return FALSE;
940 if (strchr(illegal, oem->Buffer[i])) return FALSE;
944 /* check file part is shorter than 8, extension shorter than 3
945 * dot cannot be last in string
949 if (oem->Length > 8) return FALSE;
953 if (dot > 8 || (oem->Length - dot > 4) || dot == oem->Length - 1) return FALSE;
955 if (spaces) *spaces = got_space;
959 /******************************************************************
960 * RtlGetCurrentDirectory_U (NTDLL.@)
963 NTSTATUS WINAPI RtlGetCurrentDirectory_U(ULONG buflen, LPWSTR buf)
968 TRACE("(%u %p)\n", buflen, buf);
972 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
973 us = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
975 us = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
977 len = us->Length / sizeof(WCHAR);
978 if (us->Buffer[len - 1] == '\\' && us->Buffer[len - 2] != ':')
981 if (buflen / sizeof(WCHAR) > len)
983 memcpy(buf, us->Buffer, len * sizeof(WCHAR));
993 return len * sizeof(WCHAR);
996 /******************************************************************
997 * RtlSetCurrentDirectory_U (NTDLL.@)
1000 NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir)
1002 FILE_FS_DEVICE_INFORMATION device_info;
1003 OBJECT_ATTRIBUTES attr;
1004 UNICODE_STRING newdir;
1012 newdir.Buffer = NULL;
1014 RtlAcquirePebLock();
1016 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
1017 curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
1019 curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
1021 if (!RtlDosPathNameToNtPathName_U( dir->Buffer, &newdir, NULL, NULL ))
1023 nts = STATUS_OBJECT_NAME_INVALID;
1027 attr.Length = sizeof(attr);
1028 attr.RootDirectory = 0;
1029 attr.Attributes = OBJ_CASE_INSENSITIVE;
1030 attr.ObjectName = &newdir;
1031 attr.SecurityDescriptor = NULL;
1032 attr.SecurityQualityOfService = NULL;
1034 nts = NtOpenFile( &handle, 0, &attr, &io, 0, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
1035 if (nts != STATUS_SUCCESS) goto out;
1037 /* don't keep the directory handle open on removable media */
1038 if (!NtQueryVolumeInformationFile( handle, &io, &device_info,
1039 sizeof(device_info), FileFsDeviceInformation ) &&
1040 (device_info.Characteristics & FILE_REMOVABLE_MEDIA))
1046 if (curdir->Handle) NtClose( curdir->Handle );
1047 curdir->Handle = handle;
1049 /* append trailing \ if missing */
1050 size = newdir.Length / sizeof(WCHAR);
1051 ptr = newdir.Buffer;
1052 ptr += 4; /* skip \??\ prefix */
1054 if (size && ptr[size - 1] != '\\') ptr[size++] = '\\';
1056 memcpy( curdir->DosPath.Buffer, ptr, size * sizeof(WCHAR));
1057 curdir->DosPath.Buffer[size] = 0;
1058 curdir->DosPath.Length = size * sizeof(WCHAR);
1060 TRACE( "curdir now %s %p\n", debugstr_w(curdir->DosPath.Buffer), curdir->Handle );
1063 RtlFreeUnicodeString( &newdir );
1064 RtlReleasePebLock();
1069 /******************************************************************
1070 * wine_unix_to_nt_file_name (NTDLL.@) Not a Windows API
1072 NTSTATUS wine_unix_to_nt_file_name( const ANSI_STRING *name, UNICODE_STRING *nt )
1074 static const WCHAR prefixW[] = {'\\','?','?','\\','a',':','\\'};
1075 unsigned int lenW, lenA = name->Length;
1076 const char *path = name->Buffer;
1082 if (!lenA || path[0] != '/')
1087 if ((status = DIR_get_unix_cwd( &cwd )) != STATUS_SUCCESS) return status;
1089 size = strlen(cwd) + lenA + 1;
1090 if (!(newcwd = RtlReAllocateHeap( GetProcessHeap(), 0, cwd, size )))
1092 status = STATUS_NO_MEMORY;
1096 end = cwd + strlen(cwd);
1097 if (end > cwd && end[-1] != '/') *end++ = '/';
1098 memcpy( end, path, lenA );
1102 status = find_drive_rootA( &path, lenA, &drive );
1103 lenA -= (path - cwd);
1108 status = find_drive_rootA( &path, lenA, &drive );
1109 lenA -= (path - name->Buffer);
1112 if (status != STATUS_SUCCESS) goto done;
1113 while (lenA && path[0] == '/') { lenA--; path++; }
1115 lenW = ntdll_umbstowcs( 0, path, lenA, NULL, 0 );
1116 if (!(nt->Buffer = RtlAllocateHeap( GetProcessHeap(), 0,
1117 (lenW + 1) * sizeof(WCHAR) + sizeof(prefixW) )))
1119 status = STATUS_NO_MEMORY;
1123 memcpy( nt->Buffer, prefixW, sizeof(prefixW) );
1124 nt->Buffer[4] += drive;
1125 ntdll_umbstowcs( 0, path, lenA, nt->Buffer + sizeof(prefixW)/sizeof(WCHAR), lenW );
1126 lenW += sizeof(prefixW)/sizeof(WCHAR);
1127 nt->Buffer[lenW] = 0;
1128 nt->Length = lenW * sizeof(WCHAR);
1129 nt->MaximumLength = nt->Length + sizeof(WCHAR);
1130 for (p = nt->Buffer + sizeof(prefixW)/sizeof(WCHAR); *p; p++) if (*p == '/') *p = '\\';
1133 RtlFreeHeap( GetProcessHeap(), 0, cwd );