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"
42 #include "ntdll_misc.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(file);
46 static const WCHAR DeviceRootW[] = {'\\','\\','.','\\',0};
47 static const WCHAR NTDosPrefixW[] = {'\\','?','?','\\',0};
48 static const WCHAR UncPfxW[] = {'U','N','C','\\',0};
50 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
52 /***********************************************************************
53 * remove_last_componentA
55 * Remove the last component of the path. Helper for find_drive_rootA.
57 static inline unsigned int remove_last_componentA( const char *path, unsigned int len )
63 /* find start of the last path component */
64 unsigned int prev = len;
65 if (prev <= 1) break; /* reached root */
66 while (prev > 1 && path[prev - 1] != '/') prev--;
67 /* does removing it take us up a level? */
68 if (len - prev != 1 || path[prev] != '.') /* not '.' */
70 if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */
75 /* strip off trailing slashes */
76 while (prev > 1 && path[prev - 1] == '/') prev--;
83 /***********************************************************************
86 * Find a drive for which the root matches the beginning of the given path.
87 * This can be used to translate a Unix path into a drive + DOS path.
88 * Return value is the drive, or -1 on error. On success, ppath is modified
89 * to point to the beginning of the DOS path.
91 static NTSTATUS find_drive_rootA( LPCSTR *ppath, unsigned int len, int *drive_ret )
93 /* Starting with the full path, check if the device and inode match any of
94 * the wine 'drives'. If not then remove the last path component and try
95 * again. If the last component was a '..' then skip a normal component
96 * since it's a directory that's ascended back out of.
100 const char *path = *ppath;
102 struct drive_info info[MAX_DOS_DRIVES];
104 /* get device and inode of all drives */
105 if (!DIR_get_drives_info( info )) return STATUS_OBJECT_PATH_NOT_FOUND;
107 /* strip off trailing slashes */
108 while (len > 1 && path[len - 1] == '/') len--;
110 /* make a copy of the path */
111 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, len + 1 ))) return STATUS_NO_MEMORY;
112 memcpy( buffer, path, len );
117 if (!stat( buffer, &st ) && S_ISDIR( st.st_mode ))
120 for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
122 if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino))
124 if (len == 1) len = 0; /* preserve root slash in returned path */
125 TRACE( "%s -> drive %c:, root=%s, name=%s\n",
126 debugstr_a(path), 'A' + drive, debugstr_a(buffer), debugstr_a(path + len));
129 RtlFreeHeap( GetProcessHeap(), 0, buffer );
130 return STATUS_SUCCESS;
134 if (len <= 1) break; /* reached root */
135 len = remove_last_componentA( buffer, len );
138 RtlFreeHeap( GetProcessHeap(), 0, buffer );
139 return STATUS_OBJECT_PATH_NOT_FOUND;
143 /***********************************************************************
144 * remove_last_componentW
146 * Remove the last component of the path. Helper for find_drive_rootW.
148 static inline int remove_last_componentW( const WCHAR *path, int len )
154 /* find start of the last path component */
156 if (prev <= 1) break; /* reached root */
157 while (prev > 1 && !IS_SEPARATOR(path[prev - 1])) prev--;
158 /* does removing it take us up a level? */
159 if (len - prev != 1 || path[prev] != '.') /* not '.' */
161 if (len - prev == 2 && path[prev] == '.' && path[prev+1] == '.') /* is it '..'? */
166 /* strip off trailing slashes */
167 while (prev > 1 && IS_SEPARATOR(path[prev - 1])) prev--;
174 /***********************************************************************
177 * Find a drive for which the root matches the beginning of the given path.
178 * This can be used to translate a Unix path into a drive + DOS path.
179 * Return value is the drive, or -1 on error. On success, ppath is modified
180 * to point to the beginning of the DOS path.
182 static int find_drive_rootW( LPCWSTR *ppath )
184 /* Starting with the full path, check if the device and inode match any of
185 * the wine 'drives'. If not then remove the last path component and try
186 * again. If the last component was a '..' then skip a normal component
187 * since it's a directory that's ascended back out of.
189 int drive, lenA, lenW;
191 const WCHAR *path = *ppath;
193 struct drive_info info[MAX_DOS_DRIVES];
195 /* get device and inode of all drives */
196 if (!DIR_get_drives_info( info )) return -1;
198 /* strip off trailing slashes */
199 lenW = strlenW(path);
200 while (lenW > 1 && IS_SEPARATOR(path[lenW - 1])) lenW--;
202 /* convert path to Unix encoding */
203 lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL );
204 if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, lenA + 1 ))) return -1;
205 lenA = ntdll_wcstoumbs( 0, path, lenW, buffer, lenA, NULL, NULL );
207 for (p = buffer; *p; p++) if (*p == '\\') *p = '/';
211 if (!stat( buffer, &st ) && S_ISDIR( st.st_mode ))
214 for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
216 if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino))
218 if (lenW == 1) lenW = 0; /* preserve root slash in returned path */
219 TRACE( "%s -> drive %c:, root=%s, name=%s\n",
220 debugstr_w(path), 'A' + drive, debugstr_a(buffer), debugstr_w(path + lenW));
222 RtlFreeHeap( GetProcessHeap(), 0, buffer );
227 if (lenW <= 1) break; /* reached root */
228 lenW = remove_last_componentW( path, lenW );
230 /* we only need the new length, buffer already contains the converted string */
231 lenA = ntdll_wcstoumbs( 0, path, lenW, NULL, 0, NULL, NULL );
234 RtlFreeHeap( GetProcessHeap(), 0, buffer );
239 /***********************************************************************
240 * RtlDetermineDosPathNameType_U (NTDLL.@)
242 DOS_PATHNAME_TYPE WINAPI RtlDetermineDosPathNameType_U( PCWSTR path )
244 if (IS_SEPARATOR(path[0]))
246 if (!IS_SEPARATOR(path[1])) return ABSOLUTE_PATH; /* "/foo" */
247 if (path[2] != '.') return UNC_PATH; /* "//foo" */
248 if (IS_SEPARATOR(path[3])) return DEVICE_PATH; /* "//./foo" */
249 if (path[3]) return UNC_PATH; /* "//.foo" */
250 return UNC_DOT_PATH; /* "//." */
254 if (!path[0] || path[1] != ':') return RELATIVE_PATH; /* "foo" */
255 if (IS_SEPARATOR(path[2])) return ABSOLUTE_DRIVE_PATH; /* "c:/foo" */
256 return RELATIVE_DRIVE_PATH; /* "c:foo" */
260 /***********************************************************************
261 * RtlIsDosDeviceName_U (NTDLL.@)
263 * Check if the given DOS path contains a DOS device name.
265 * Returns the length of the device name in the low word and its
266 * position in the high word (both in bytes, not WCHARs), or 0 if no
267 * device name is found.
269 ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name )
271 static const WCHAR consoleW[] = {'\\','\\','.','\\','C','O','N',0};
272 static const WCHAR auxW[3] = {'A','U','X'};
273 static const WCHAR comW[3] = {'C','O','M'};
274 static const WCHAR conW[3] = {'C','O','N'};
275 static const WCHAR lptW[3] = {'L','P','T'};
276 static const WCHAR nulW[3] = {'N','U','L'};
277 static const WCHAR prnW[3] = {'P','R','N'};
279 const WCHAR *start, *end, *p;
281 switch(RtlDetermineDosPathNameType_U( dos_name ))
287 if (!strcmpiW( dos_name, consoleW ))
288 return MAKELONG( sizeof(conW), 4 * sizeof(WCHAR) ); /* 4 is length of \\.\ prefix */
290 case ABSOLUTE_DRIVE_PATH:
291 case RELATIVE_DRIVE_PATH:
292 start = dos_name + 2; /* skip drive letter */
299 /* find start of file name */
300 for (p = start; *p; p++) if (IS_SEPARATOR(*p)) start = p + 1;
302 /* truncate at extension and ':' */
303 for (end = start; *end; end++) if (*end == '.' || *end == ':') break;
306 /* remove trailing spaces */
307 while (end >= start && *end == ' ') end--;
309 /* now we have a potential device name between start and end, check it */
310 switch(end - start + 1)
313 if (strncmpiW( start, auxW, 3 ) &&
314 strncmpiW( start, conW, 3 ) &&
315 strncmpiW( start, nulW, 3 ) &&
316 strncmpiW( start, prnW, 3 )) break;
317 return MAKELONG( 3 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
319 if (strncmpiW( start, comW, 3 ) && strncmpiW( start, lptW, 3 )) break;
320 if (*end <= '0' || *end > '9') break;
321 return MAKELONG( 4 * sizeof(WCHAR), (start - dos_name) * sizeof(WCHAR) );
322 default: /* can't match anything */
329 /**************************************************************************
330 * RtlDosPathNameToNtPathName_U [NTDLL.@]
332 * dos_path: a DOS path name (fully qualified or not)
333 * ntpath: pointer to a UNICODE_STRING to hold the converted
335 * file_part:will point (in ntpath) to the file part in the path
336 * cd: directory reference (optional)
339 * + fill the cd structure
341 BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
342 PUNICODE_STRING ntpath,
346 static const WCHAR LongFileNamePfxW[4] = {'\\','\\','?','\\'};
348 WCHAR local[MAX_PATH];
351 TRACE("(%s,%p,%p,%p)\n",
352 debugstr_w(dos_path), ntpath, file_part, cd);
356 FIXME("Unsupported parameter\n");
357 memset(cd, 0, sizeof(*cd));
360 if (!dos_path || !*dos_path) return FALSE;
362 if (!strncmpW(dos_path, LongFileNamePfxW, 4))
364 ntpath->Length = strlenW(dos_path) * sizeof(WCHAR);
365 ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR);
366 ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
367 if (!ntpath->Buffer) return FALSE;
368 memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength );
369 ntpath->Buffer[1] = '?'; /* change \\?\ to \??\ */
372 if ((ptr = strrchrW( ntpath->Buffer, '\\' )) && ptr[1]) *file_part = ptr + 1;
373 else *file_part = NULL;
379 sz = RtlGetFullPathName_U(dos_path, sizeof(local), ptr, file_part);
380 if (sz == 0) return FALSE;
381 if (sz > sizeof(local))
383 if (!(ptr = RtlAllocateHeap(GetProcessHeap(), 0, sz))) return FALSE;
384 sz = RtlGetFullPathName_U(dos_path, sz, ptr, file_part);
387 ntpath->MaximumLength = sz + (4 /* unc\ */ + 4 /* \??\ */) * sizeof(WCHAR);
388 ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
391 if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
395 strcpyW(ntpath->Buffer, NTDosPrefixW);
396 switch (RtlDetermineDosPathNameType_U(ptr))
398 case UNC_PATH: /* \\foo */
400 strcatW(ntpath->Buffer, UncPfxW);
402 case DEVICE_PATH: /* \\.\foo */
410 strcatW(ntpath->Buffer, ptr + offset);
411 ntpath->Length = strlenW(ntpath->Buffer) * sizeof(WCHAR);
413 if (file_part && *file_part)
414 *file_part = ntpath->Buffer + ntpath->Length / sizeof(WCHAR) - strlenW(*file_part);
416 /* FIXME: cd filling */
418 if (ptr != local) RtlFreeHeap(GetProcessHeap(), 0, ptr);
422 /******************************************************************
425 * Searches a file of name 'name' into a ';' separated list of paths
427 * Doesn't seem to search elsewhere than the paths list
428 * Stores the result in buffer (file_part will point to the position
429 * of the file name in the buffer)
431 * - how long shall the paths be ??? (MAX_PATH or larger with \\?\ constructs ???)
433 ULONG WINAPI RtlDosSearchPath_U(LPCWSTR paths, LPCWSTR search, LPCWSTR ext,
434 ULONG buffer_size, LPWSTR buffer,
437 DOS_PATHNAME_TYPE type = RtlDetermineDosPathNameType_U(search);
440 if (type == RELATIVE_PATH)
442 ULONG allocated = 0, needed, filelen;
445 filelen = 1 /* for \ */ + strlenW(search) + 1 /* \0 */;
447 /* Windows only checks for '.' without worrying about path components */
448 if (strchrW( search, '.' )) ext = NULL;
449 if (ext != NULL) filelen += strlenW(ext);
455 for (needed = 0, ptr = paths; *ptr != 0 && *ptr++ != ';'; needed++);
456 if (needed + filelen > allocated)
458 if (!name) name = RtlAllocateHeap(GetProcessHeap(), 0,
459 (needed + filelen) * sizeof(WCHAR));
462 WCHAR *newname = RtlReAllocateHeap(GetProcessHeap(), 0, name,
463 (needed + filelen) * sizeof(WCHAR));
464 if (!newname) RtlFreeHeap(GetProcessHeap(), 0, name);
468 allocated = needed + filelen;
470 memmove(name, paths, needed * sizeof(WCHAR));
471 /* append '\\' if none is present */
472 if (needed > 0 && name[needed - 1] != '\\') name[needed++] = '\\';
473 strcpyW(&name[needed], search);
474 if (ext) strcatW(&name[needed], ext);
475 if (RtlDoesFileExists_U(name))
477 len = RtlGetFullPathName_U(name, buffer_size, buffer, file_part);
482 RtlFreeHeap(GetProcessHeap(), 0, name);
484 else if (RtlDoesFileExists_U(search))
486 len = RtlGetFullPathName_U(search, buffer_size, buffer, file_part);
493 /******************************************************************
496 * Helper for RtlGetFullPathName_U.
497 * Get rid of . and .. components in the path.
499 static inline void collapse_path( WCHAR *path, UINT mark )
503 /* convert every / into a \ */
504 for (p = path; *p; p++) if (*p == '/') *p = '\\';
506 /* collapse duplicate backslashes */
507 next = path + max( 1, mark );
508 for (p = next; *p; p++) if (*p != '\\' || next[-1] != '\\') *next++ = *p;
518 case '\\': /* .\ component */
520 memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) );
522 case 0: /* final . */
523 if (p > path + mark) p--;
527 if (p[2] == '\\') /* ..\ component */
533 while (p > path + mark && p[-1] != '\\') p--;
535 memmove( p, next, (strlenW(next) + 1) * sizeof(WCHAR) );
538 else if (!p[2]) /* final .. */
543 while (p > path + mark && p[-1] != '\\') p--;
544 if (p > path + mark) p--;
552 /* skip to the next component */
553 while (*p && *p != '\\') p++;
556 /* remove last dot in previous dir name */
557 if (p > path + mark && p[-1] == '.') memmove( p-1, p, (strlenW(p) + 1) * sizeof(WCHAR) );
562 /* remove trailing spaces and dots (yes, Windows really does that, don't ask) */
563 while (p > path + mark && (p[-1] == ' ' || p[-1] == '.')) p--;
568 /******************************************************************
571 * Skip the \\share\dir\ part of a file name. Helper for RtlGetFullPathName_U.
573 static const WCHAR *skip_unc_prefix( const WCHAR *ptr )
576 while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */
577 while (IS_SEPARATOR(*ptr)) ptr++;
578 while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */
579 while (IS_SEPARATOR(*ptr)) ptr++;
584 /******************************************************************
585 * get_full_path_helper
587 * Helper for RtlGetFullPathName_U
588 * Note: name and buffer are allowed to point to the same memory spot
590 static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
592 ULONG reqsize = 0, mark = 0, dep = 0, deplen;
593 LPWSTR ins_str = NULL;
595 const UNICODE_STRING* cd;
598 /* return error if name only consists of spaces */
599 for (ptr = name; *ptr; ptr++) if (*ptr != ' ') break;
604 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
605 cd = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
607 cd = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
609 switch (RtlDetermineDosPathNameType_U(name))
611 case UNC_PATH: /* \\foo */
612 ptr = skip_unc_prefix( name );
616 case DEVICE_PATH: /* \\.\foo */
620 case ABSOLUTE_DRIVE_PATH: /* c:\foo */
621 reqsize = sizeof(WCHAR);
622 tmp[0] = toupperW(name[0]);
628 case RELATIVE_DRIVE_PATH: /* c:foo */
630 if (toupperW(name[0]) != toupperW(cd->Buffer[0]) || cd->Buffer[1] != ':')
632 UNICODE_STRING var, val;
638 var.Length = 3 * sizeof(WCHAR);
639 var.MaximumLength = 4 * sizeof(WCHAR);
642 val.MaximumLength = size;
643 val.Buffer = RtlAllocateHeap(GetProcessHeap(), 0, size);
645 switch (RtlQueryEnvironmentVariable_U(NULL, &var, &val))
648 /* FIXME: Win2k seems to check that the environment variable actually points
649 * to an existing directory. If not, root of the drive is used
650 * (this seems also to be the only spot in RtlGetFullPathName that the
651 * existence of a part of a path is checked)
654 case STATUS_BUFFER_TOO_SMALL:
655 reqsize = val.Length + sizeof(WCHAR); /* append trailing '\\' */
656 val.Buffer[val.Length / sizeof(WCHAR)] = '\\';
657 ins_str = val.Buffer;
659 case STATUS_VARIABLE_NOT_FOUND:
660 reqsize = 3 * sizeof(WCHAR);
667 ERR("Unsupported status code\n");
675 case RELATIVE_PATH: /* foo */
676 reqsize = cd->Length;
677 ins_str = cd->Buffer;
678 if (cd->Buffer[1] != ':')
680 ptr = skip_unc_prefix( cd->Buffer );
681 mark = ptr - cd->Buffer;
686 case ABSOLUTE_PATH: /* \xxx */
687 if (name[0] == '/') /* may be a Unix path */
689 const WCHAR *ptr = name;
690 int drive = find_drive_rootW( &ptr );
693 reqsize = 3 * sizeof(WCHAR);
694 tmp[0] = 'A' + drive;
703 if (cd->Buffer[1] == ':')
705 reqsize = 2 * sizeof(WCHAR);
706 tmp[0] = cd->Buffer[0];
713 ptr = skip_unc_prefix( cd->Buffer );
714 reqsize = (ptr - cd->Buffer) * sizeof(WCHAR);
715 mark = reqsize / sizeof(WCHAR);
716 ins_str = cd->Buffer;
720 case UNC_DOT_PATH: /* \\. */
721 reqsize = 4 * sizeof(WCHAR);
736 deplen = strlenW(name + dep) * sizeof(WCHAR);
737 if (reqsize + deplen + sizeof(WCHAR) > size)
739 /* not enough space, return need size (including terminating '\0') */
740 reqsize += deplen + sizeof(WCHAR);
744 memmove(buffer + reqsize / sizeof(WCHAR), name + dep, deplen + sizeof(WCHAR));
745 if (reqsize) memcpy(buffer, ins_str, reqsize);
748 if (ins_str != tmp && ins_str != cd->Buffer)
749 RtlFreeHeap(GetProcessHeap(), 0, ins_str);
751 collapse_path( buffer, mark );
752 reqsize = strlenW(buffer) * sizeof(WCHAR);
759 /******************************************************************
760 * RtlGetFullPathName_U (NTDLL.@)
762 * Returns the number of bytes written to buffer (not including the
763 * terminating NULL) if the function succeeds, or the required number of bytes
764 * (including the terminating NULL) if the buffer is too small.
766 * file_part will point to the filename part inside buffer (except if we use
767 * DOS device name, in which case file_in_buf is NULL)
770 DWORD WINAPI RtlGetFullPathName_U(const WCHAR* name, ULONG size, WCHAR* buffer,
777 TRACE("(%s %u %p %p)\n", debugstr_w(name), size, buffer, file_part);
779 if (!name || !*name) return 0;
781 if (file_part) *file_part = NULL;
783 /* check for DOS device name */
784 dosdev = RtlIsDosDeviceName_U(name);
787 DWORD offset = HIWORD(dosdev) / sizeof(WCHAR); /* get it in WCHARs, not bytes */
788 DWORD sz = LOWORD(dosdev); /* in bytes */
790 if (8 + sz + 2 > size) return sz + 10;
791 strcpyW(buffer, DeviceRootW);
792 memmove(buffer + 4, name + offset, sz);
793 buffer[4 + sz / sizeof(WCHAR)] = '\0';
794 /* file_part isn't set in this case */
798 reqsize = get_full_path_helper(name, buffer, size);
799 if (!reqsize) return 0;
802 LPWSTR tmp = RtlAllocateHeap(GetProcessHeap(), 0, reqsize);
803 reqsize = get_full_path_helper(name, tmp, reqsize);
804 if (reqsize + sizeof(WCHAR) > size) /* it may have worked the second time */
806 RtlFreeHeap(GetProcessHeap(), 0, tmp);
807 return reqsize + sizeof(WCHAR);
809 memcpy( buffer, tmp, reqsize + sizeof(WCHAR) );
810 RtlFreeHeap(GetProcessHeap(), 0, tmp);
814 if (file_part && (ptr = strrchrW(buffer, '\\')) != NULL && ptr >= buffer + 2 && *++ptr)
819 /*************************************************************************
820 * RtlGetLongestNtPathLength [NTDLL.@]
822 * Get the longest allowed path length
828 * The longest allowed path length (277 characters under Win2k).
830 DWORD WINAPI RtlGetLongestNtPathLength(void)
832 return MAX_NT_PATH_LENGTH;
835 /******************************************************************
836 * RtlIsNameLegalDOS8Dot3 (NTDLL.@)
838 * Returns TRUE iff unicode is a valid DOS (8+3) name.
839 * If the name is valid, oem gets filled with the corresponding OEM string
840 * spaces is set to TRUE if unicode contains spaces
842 BOOLEAN WINAPI RtlIsNameLegalDOS8Dot3( const UNICODE_STRING *unicode,
843 OEM_STRING *oem, BOOLEAN *spaces )
845 static const char illegal[] = "*?<>|\"+=,;[]:/\\\345";
850 BOOLEAN got_space = FALSE;
854 oem_str.Length = sizeof(buffer);
855 oem_str.MaximumLength = sizeof(buffer);
856 oem_str.Buffer = buffer;
859 if (RtlUpcaseUnicodeStringToCountedOemString( oem, unicode, FALSE ) != STATUS_SUCCESS)
862 if (oem->Length > 12) return FALSE;
864 /* a starting . is invalid, except for . and .. */
865 if (oem->Buffer[0] == '.')
867 if (oem->Length != 1 && (oem->Length != 2 || oem->Buffer[1] != '.')) return FALSE;
868 if (spaces) *spaces = FALSE;
872 for (i = 0; i < oem->Length; i++)
874 switch (oem->Buffer[i])
877 /* leading/trailing spaces not allowed */
878 if (!i || i == oem->Length-1 || oem->Buffer[i+1] == '.') return FALSE;
882 if (dot != -1) return FALSE;
886 if (strchr(illegal, oem->Buffer[i])) return FALSE;
890 /* check file part is shorter than 8, extension shorter than 3
891 * dot cannot be last in string
895 if (oem->Length > 8) return FALSE;
899 if (dot > 8 || (oem->Length - dot > 4) || dot == oem->Length - 1) return FALSE;
901 if (spaces) *spaces = got_space;
905 /******************************************************************
906 * RtlGetCurrentDirectory_U (NTDLL.@)
909 NTSTATUS WINAPI RtlGetCurrentDirectory_U(ULONG buflen, LPWSTR buf)
914 TRACE("(%u %p)\n", buflen, buf);
918 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
919 us = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
921 us = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
923 len = us->Length / sizeof(WCHAR);
924 if (us->Buffer[len - 1] == '\\' && us->Buffer[len - 2] != ':')
927 if (buflen / sizeof(WCHAR) > len)
929 memcpy(buf, us->Buffer, len * sizeof(WCHAR));
939 return len * sizeof(WCHAR);
942 /******************************************************************
943 * RtlSetCurrentDirectory_U (NTDLL.@)
946 NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir)
948 FILE_FS_DEVICE_INFORMATION device_info;
949 OBJECT_ATTRIBUTES attr;
950 UNICODE_STRING newdir;
958 newdir.Buffer = NULL;
962 if (NtCurrentTeb()->Tib.SubSystemTib) /* FIXME: hack */
963 curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir;
965 curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory;
967 if (!RtlDosPathNameToNtPathName_U( dir->Buffer, &newdir, NULL, NULL ))
969 nts = STATUS_OBJECT_NAME_INVALID;
973 attr.Length = sizeof(attr);
974 attr.RootDirectory = 0;
975 attr.Attributes = OBJ_CASE_INSENSITIVE;
976 attr.ObjectName = &newdir;
977 attr.SecurityDescriptor = NULL;
978 attr.SecurityQualityOfService = NULL;
980 nts = NtOpenFile( &handle, 0, &attr, &io, 0, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
981 if (nts != STATUS_SUCCESS) goto out;
983 /* don't keep the directory handle open on removable media */
984 if (!NtQueryVolumeInformationFile( handle, &io, &device_info,
985 sizeof(device_info), FileFsDeviceInformation ) &&
986 (device_info.Characteristics & FILE_REMOVABLE_MEDIA))
992 if (curdir->Handle) NtClose( curdir->Handle );
993 curdir->Handle = handle;
995 /* append trailing \ if missing */
996 size = newdir.Length / sizeof(WCHAR);
998 ptr += 4; /* skip \??\ prefix */
1000 if (size && ptr[size - 1] != '\\') ptr[size++] = '\\';
1002 memcpy( curdir->DosPath.Buffer, ptr, size * sizeof(WCHAR));
1003 curdir->DosPath.Buffer[size] = 0;
1004 curdir->DosPath.Length = size * sizeof(WCHAR);
1006 TRACE( "curdir now %s %p\n", debugstr_w(curdir->DosPath.Buffer), curdir->Handle );
1009 RtlFreeUnicodeString( &newdir );
1010 RtlReleasePebLock();
1015 /******************************************************************
1016 * wine_unix_to_nt_file_name (NTDLL.@) Not a Windows API
1018 NTSTATUS CDECL wine_unix_to_nt_file_name( const ANSI_STRING *name, UNICODE_STRING *nt )
1020 static const WCHAR prefixW[] = {'\\','?','?','\\','A',':','\\'};
1021 unsigned int lenW, lenA = name->Length;
1022 const char *path = name->Buffer;
1028 if (!lenA || path[0] != '/')
1033 if ((status = DIR_get_unix_cwd( &cwd )) != STATUS_SUCCESS) return status;
1035 size = strlen(cwd) + lenA + 1;
1036 if (!(newcwd = RtlReAllocateHeap( GetProcessHeap(), 0, cwd, size )))
1038 status = STATUS_NO_MEMORY;
1042 end = cwd + strlen(cwd);
1043 if (end > cwd && end[-1] != '/') *end++ = '/';
1044 memcpy( end, path, lenA );
1048 status = find_drive_rootA( &path, lenA, &drive );
1049 lenA -= (path - cwd);
1054 status = find_drive_rootA( &path, lenA, &drive );
1055 lenA -= (path - name->Buffer);
1058 if (status != STATUS_SUCCESS) goto done;
1059 while (lenA && path[0] == '/') { lenA--; path++; }
1061 lenW = ntdll_umbstowcs( 0, path, lenA, NULL, 0 );
1062 if (!(nt->Buffer = RtlAllocateHeap( GetProcessHeap(), 0,
1063 (lenW + 1) * sizeof(WCHAR) + sizeof(prefixW) )))
1065 status = STATUS_NO_MEMORY;
1069 memcpy( nt->Buffer, prefixW, sizeof(prefixW) );
1070 nt->Buffer[4] += drive;
1071 ntdll_umbstowcs( 0, path, lenA, nt->Buffer + sizeof(prefixW)/sizeof(WCHAR), lenW );
1072 lenW += sizeof(prefixW)/sizeof(WCHAR);
1073 nt->Buffer[lenW] = 0;
1074 nt->Length = lenW * sizeof(WCHAR);
1075 nt->MaximumLength = nt->Length + sizeof(WCHAR);
1076 for (p = nt->Buffer + sizeof(prefixW)/sizeof(WCHAR); *p; p++) if (*p == '/') *p = '\\';
1079 RtlFreeHeap( GetProcessHeap(), 0, cwd );