2 * NTDLL directory functions
4 * Copyright 1993 Erik Bos
5 * Copyright 2003 Eric Pouech
6 * Copyright 1996, 2004 Alexandre Julliard
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "wine/port.h"
26 #include <sys/types.h>
38 #ifdef HAVE_SYS_IOCTL_H
39 #include <sys/ioctl.h>
41 #ifdef HAVE_LINUX_IOCTL_H
42 #include <linux/ioctl.h>
44 #ifdef HAVE_SYS_PARAM_H
45 #include <sys/param.h>
47 #ifdef HAVE_SYS_MOUNT_H
48 #include <sys/mount.h>
55 #define NONAMELESSUNION
56 #define NONAMELESSSTRUCT
63 #include "ntdll_misc.h"
64 #include "wine/unicode.h"
65 #include "wine/server.h"
66 #include "wine/library.h"
67 #include "wine/debug.h"
69 WINE_DEFAULT_DEBUG_CHANNEL(file);
72 #undef VFAT_IOCTL_READDIR_BOTH
77 /* We want the real kernel dirent structure, not the libc one */
82 unsigned short d_reclen;
86 /* Define the VFAT ioctl to get both short and long file names */
87 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
90 # define O_DIRECTORY 0200000 /* must be directory */
99 unsigned short d_reclen;
100 unsigned char d_type;
104 static inline int getdents64( int fd, KERNEL_DIRENT64 *de, unsigned int size )
107 __asm__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
109 : "0" (220 /*NR_getdents64*/), "r" (fd), "c" (de), "d" (size)
124 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
125 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
127 #define INVALID_NT_CHARS '*','?','<','>','|','"'
128 #define INVALID_DOS_CHARS INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
130 #define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
132 static int show_dir_symlinks = -1;
133 static int show_dot_files;
135 /* at some point we may want to allow Winelib apps to set this */
136 static const int is_case_sensitive = FALSE;
138 static CRITICAL_SECTION dir_section;
139 static CRITICAL_SECTION_DEBUG critsect_debug =
142 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
143 0, 0, { 0, (DWORD)(__FILE__ ": dir_section") }
145 static CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
148 /***********************************************************************
149 * get_default_com_device
151 * Return the default device to use for serial ports.
153 static char *get_default_com_device( int num )
157 if (!num || num > 9) return ret;
159 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
162 strcpy( ret, "/dev/ttyS0" );
163 ret[strlen(ret) - 1] = '0' + num - 1;
166 FIXME( "no known default for device com%d\n", num );
172 /***********************************************************************
173 * get_default_lpt_device
175 * Return the default device to use for parallel ports.
177 static char *get_default_lpt_device( int num )
181 if (!num || num > 9) return ret;
183 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
186 strcpy( ret, "/dev/lp0" );
187 ret[strlen(ret) - 1] = '0' + num - 1;
190 FIXME( "no known default for device lpt%d\n", num );
196 /***********************************************************************
197 * parse_mount_entries
199 * Parse mount entries looking for a given device. Helper for get_default_drive_device.
202 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
204 struct mntent *entry;
208 while ((entry = getmntent( f )))
210 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
211 if (!strcmp( entry->mnt_type, "nfs" ) ||
212 !strcmp( entry->mnt_type, "smbfs" ) ||
213 !strcmp( entry->mnt_type, "ncpfs" )) continue;
215 if (stat( entry->mnt_dir, &st ) == -1) continue;
216 if (st.st_dev != dev || st.st_ino != ino) continue;
217 if (!strcmp( entry->mnt_type, "supermount" ))
219 if ((device = strstr( entry->mnt_opts, "dev=" )))
221 char *p = strchr( device + 4, ',' );
227 return entry->mnt_fsname;
233 /***********************************************************************
234 * get_default_drive_device
236 * Return the default device to use for a given drive mount point.
238 static char *get_default_drive_device( const char *root )
248 /* try to open it first to force it to get mounted */
249 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
251 res = fstat( fd, &st );
254 /* now try normal stat just in case */
255 if (res == -1) res = stat( root, &st );
256 if (res == -1) return NULL;
258 RtlEnterCriticalSection( &dir_section );
260 if ((f = fopen( "/etc/mtab", "r" )))
262 device = parse_mount_entries( f, st.st_dev, st.st_ino );
265 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
266 if (!device && (f = fopen( "/etc/fstab", "r" )))
268 device = parse_mount_entries( f, st.st_dev, st.st_ino );
273 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
274 if (ret) strcpy( ret, device );
276 RtlLeaveCriticalSection( &dir_section );
277 #elif defined(__APPLE__)
278 struct statfs *mntStat;
284 static const char path_bsd_device[] = "/dev/disk";
287 res = stat( root, &st );
288 if (res == -1) return NULL;
293 RtlEnterCriticalSection( &dir_section );
295 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
297 for (i = 0; i < mntSize && !ret; i++)
299 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
300 if (st.st_dev != dev || st.st_ino != ino) continue;
302 /* FIXME add support for mounted network drive */
303 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
305 /* set return value to the corresponding raw BSD node */
306 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
309 strcpy(ret, "/dev/r");
310 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
314 RtlLeaveCriticalSection( &dir_section );
317 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
323 /***********************************************************************
326 * Initialize the show_dir_symlinks and show_dot_files options.
328 static void init_options(void)
330 static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
331 'S','o','f','t','w','a','r','e','\\',
332 'W','i','n','e','\\','W','i','n','e','\\',
333 'C','o','n','f','i','g','\\','W','i','n','e',0};
334 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
335 static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
339 OBJECT_ATTRIBUTES attr;
340 UNICODE_STRING nameW;
342 show_dot_files = show_dir_symlinks = 0;
344 attr.Length = sizeof(attr);
345 attr.RootDirectory = 0;
346 attr.ObjectName = &nameW;
348 attr.SecurityDescriptor = NULL;
349 attr.SecurityQualityOfService = NULL;
350 RtlInitUnicodeString( &nameW, WineW );
352 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
354 RtlInitUnicodeString( &nameW, ShowDotFilesW );
355 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
357 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
358 show_dot_files = IS_OPTION_TRUE( str[0] );
360 RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
361 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
363 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
364 show_dir_symlinks = IS_OPTION_TRUE( str[0] );
371 /***********************************************************************
374 * Check if the specified file should be hidden based on its name and the show dot files option.
376 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
380 if (show_dir_symlinks == -1) init_options();
381 if (show_dot_files) return FALSE;
383 end = p = name->Buffer + name->Length/sizeof(WCHAR);
384 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
385 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
386 if (p == end || *p != '.') return FALSE;
387 /* make sure it isn't '.' or '..' */
388 if (p + 1 == end) return FALSE;
389 if (p[1] == '.' && p + 2 == end) return FALSE;
394 /***********************************************************************
395 * hash_short_file_name
397 * Transform a Unix file name into a hashed DOS name. If the name is a valid
398 * DOS name, it is converted to upper-case; otherwise it is replaced by a
399 * hashed version that fits in 8.3 format.
400 * 'buffer' must be at least 12 characters long.
401 * Returns length of short name in bytes; short name is NOT null-terminated.
403 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
405 static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
406 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
408 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
413 /* Compute the hash code of the file name */
414 /* If you know something about hash functions, feel free to */
415 /* insert a better algorithm here... */
416 if (!is_case_sensitive)
418 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
419 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
420 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
424 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
425 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
426 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
429 /* Find last dot for start of the extension */
430 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
432 /* Copy first 4 chars, replacing invalid chars with '_' */
433 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
435 if (p == end || p == ext) break;
436 *dst++ = strchrW( invalid_chars, *p ) ? '_' : toupperW(*p);
438 /* Pad to 5 chars with '~' */
439 while (i-- >= 0) *dst++ = '~';
441 /* Insert hash code converted to 3 ASCII chars */
442 *dst++ = hash_chars[(hash >> 10) & 0x1f];
443 *dst++ = hash_chars[(hash >> 5) & 0x1f];
444 *dst++ = hash_chars[hash & 0x1f];
446 /* Copy the first 3 chars of the extension (if any) */
450 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
451 *dst++ = strchrW( invalid_chars, *ext ) ? '_' : toupperW(*ext);
457 /***********************************************************************
460 * Check a long file name against a mask.
462 * Tests (done in W95 DOS shell - case insensitive):
463 * *.txt test1.test.txt *
465 * *.t??????.t* test1.ta.tornado.txt *
466 * *tornado* test1.ta.tornado.txt *
467 * t*t test1.ta.tornado.txt *
469 * ?est??? test1.txt -
470 * *test1.txt* test1.txt *
471 * h?l?o*t.dat hellothisisatest.dat *
473 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
476 const WCHAR *name = name_str->Buffer;
477 const WCHAR *mask = mask_str->Buffer;
478 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
479 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
480 const WCHAR *lastjoker = NULL;
481 const WCHAR *next_to_retry = NULL;
483 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
485 while (name < name_end && mask < mask_end)
491 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
492 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
495 /* skip to the next match after the joker(s) */
496 if (is_case_sensitive)
497 while (name < name_end && (*name != *mask)) name++;
499 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
500 next_to_retry = name;
507 if (is_case_sensitive) mismatch = (*mask != *name);
508 else mismatch = (toupperW(*mask) != toupperW(*name));
514 if (mask == mask_end)
516 if (name == name_end) return TRUE;
517 if (lastjoker) mask = lastjoker;
520 else /* mismatch ! */
522 if (lastjoker) /* we had an '*', so we can try unlimitedly */
526 /* this scan sequence was a mismatch, so restart
527 * 1 char after the first char we checked last time */
529 name = next_to_retry;
531 else return FALSE; /* bad luck */
536 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
537 mask++; /* Ignore trailing '.' or '*' in mask */
538 return (name == name_end && mask == mask_end);
542 /***********************************************************************
545 * helper for NtQueryDirectoryFile
547 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
548 const char *long_name, const char *short_name,
549 const UNICODE_STRING *mask )
551 FILE_BOTH_DIR_INFORMATION *info;
552 int i, long_len, short_len, total_len;
554 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
555 WCHAR short_nameW[12];
558 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
559 if (long_len == -1) return NULL;
561 str.Buffer = long_nameW;
562 str.Length = long_len * sizeof(WCHAR);
563 str.MaximumLength = sizeof(long_nameW);
567 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
568 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
569 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
571 else /* generate a short name if necessary */
576 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
577 short_len = hash_short_file_name( &str, short_nameW );
580 TRACE( "long %s short %s mask %s\n",
581 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
583 if (mask && !match_filename( &str, mask ))
585 if (!short_len) return NULL; /* no short name to match */
586 str.Buffer = short_nameW;
587 str.Length = short_len * sizeof(WCHAR);
588 str.MaximumLength = sizeof(short_nameW);
589 if (!match_filename( &str, mask )) return NULL;
592 total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
593 info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
595 if (*pos + total_len > max_length) total_len = max_length - *pos;
597 if (lstat( long_name, &st ) == -1) return NULL;
598 if (S_ISLNK( st.st_mode ))
600 if (stat( long_name, &st ) == -1) return NULL;
601 if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
604 info->NextEntryOffset = total_len;
605 info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
607 RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
608 RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
609 RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
610 RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
612 if (S_ISDIR(st.st_mode))
614 info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
615 info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
619 info->EndOfFile.QuadPart = st.st_size;
620 info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
621 info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
624 if (!(st.st_mode & S_IWUSR))
625 info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
627 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
628 info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
630 info->EaSize = 0; /* FIXME */
631 info->ShortNameLength = short_len * sizeof(WCHAR);
632 for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
633 info->FileNameLength = long_len * sizeof(WCHAR);
634 memcpy( info->FileName, long_nameW,
635 min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
642 /***********************************************************************
643 * read_directory_vfat
645 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
647 #ifdef VFAT_IOCTL_READDIR_BOTH
648 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
649 BOOLEAN single_entry, const UNICODE_STRING *mask,
650 BOOLEAN restart_scan )
655 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
656 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
658 io->u.Status = STATUS_SUCCESS;
660 if (restart_scan) lseek( fd, 0, SEEK_SET );
662 if (length < max_dir_info_size) /* we may have to return a partial entry here */
664 off_t old_pos = lseek( fd, 0, SEEK_CUR );
666 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
667 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
671 if (!de[0].d_reclen) break;
673 info = append_entry( buffer, &io->Information, length,
674 de[1].d_name, de[0].d_name, mask );
676 info = append_entry( buffer, &io->Information, length,
677 de[0].d_name, NULL, mask );
681 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
683 io->u.Status = STATUS_BUFFER_OVERFLOW;
684 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
688 old_pos = lseek( fd, 0, SEEK_CUR );
689 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
692 else /* we'll only return full entries, no need to worry about overflow */
694 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
695 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
699 if (!de[0].d_reclen) break;
701 info = append_entry( buffer, &io->Information, length,
702 de[1].d_name, de[0].d_name, mask );
704 info = append_entry( buffer, &io->Information, length,
705 de[0].d_name, NULL, mask );
709 if (single_entry) break;
710 /* check if we still have enough space for the largest possible entry */
711 if (io->Information + max_dir_info_size > length) break;
713 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
717 if (last_info) last_info->NextEntryOffset = 0;
718 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
721 #endif /* VFAT_IOCTL_READDIR_BOTH */
724 /***********************************************************************
725 * read_directory_getdents
727 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
730 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
731 BOOLEAN single_entry, const UNICODE_STRING *mask,
732 BOOLEAN restart_scan )
735 size_t size = length;
737 char local_buffer[8192];
738 KERNEL_DIRENT64 *data, *de;
739 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
740 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
742 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
744 size = sizeof(local_buffer);
745 data = (KERNEL_DIRENT64 *)local_buffer;
748 if (restart_scan) lseek( fd, 0, SEEK_SET );
749 else if (length < max_dir_info_size) /* we may have to return a partial entry here */
751 old_pos = lseek( fd, 0, SEEK_CUR );
752 if (old_pos == -1 && errno == ENOENT)
754 io->u.Status = STATUS_NO_MORE_FILES;
760 io->u.Status = STATUS_SUCCESS;
762 res = getdents64( fd, data, size );
767 io->u.Status = FILE_GetNtStatus();
778 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
782 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
784 io->u.Status = STATUS_BUFFER_OVERFLOW;
785 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
788 /* check if we still have enough space for the largest possible entry */
789 if (single_entry || io->Information + max_dir_info_size > length)
791 if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
796 /* move on to the next entry */
797 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
800 res = getdents64( fd, data, size );
805 if (last_info) last_info->NextEntryOffset = 0;
806 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
809 if ((char *)data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
812 #endif /* USE_GETDENTS */
815 /***********************************************************************
816 * read_directory_readdir
818 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
820 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
821 BOOLEAN single_entry, const UNICODE_STRING *mask,
822 BOOLEAN restart_scan )
825 off_t i, old_pos = 0;
827 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
828 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
830 if (!(dir = opendir( "." )))
832 io->u.Status = FILE_GetNtStatus();
838 old_pos = lseek( fd, 0, SEEK_CUR );
839 /* skip the right number of entries */
840 for (i = 0; i < old_pos; i++)
845 io->u.Status = STATUS_NO_MORE_FILES;
850 io->u.Status = STATUS_SUCCESS;
852 while ((de = readdir( dir )))
855 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
859 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
861 io->u.Status = STATUS_BUFFER_OVERFLOW;
862 old_pos--; /* restore pos to previous entry */
865 if (single_entry) break;
866 /* check if we still have enough space for the largest possible entry */
867 if (io->Information + max_dir_info_size > length) break;
871 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
874 if (last_info) last_info->NextEntryOffset = 0;
875 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
879 /******************************************************************************
880 * NtQueryDirectoryFile [NTDLL.@]
881 * ZwQueryDirectoryFile [NTDLL.@]
883 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
884 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
886 PVOID buffer, ULONG length,
887 FILE_INFORMATION_CLASS info_class,
888 BOOLEAN single_entry,
889 PUNICODE_STRING mask,
890 BOOLEAN restart_scan )
894 TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
895 handle, event, apc_routine, apc_context, io, buffer,
896 length, info_class, single_entry, debugstr_us(mask),
899 if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
901 if (event || apc_routine)
903 FIXME( "Unsupported yet option\n" );
904 return io->u.Status = STATUS_NOT_IMPLEMENTED;
906 if (info_class != FileBothDirectoryInformation)
908 FIXME( "Unsupported file info class %d\n", info_class );
909 return io->u.Status = STATUS_NOT_IMPLEMENTED;
912 if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL )) != STATUS_SUCCESS)
917 RtlEnterCriticalSection( &dir_section );
919 if (show_dir_symlinks == -1) init_options();
921 if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
923 #ifdef VFAT_IOCTL_READDIR_BOTH
924 if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
927 if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
929 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
931 if (fchdir( cwd ) == -1) chdir( "/" );
933 else io->u.Status = FILE_GetNtStatus();
935 RtlLeaveCriticalSection( &dir_section );
937 wine_server_release_fd( handle, fd );
938 if (cwd != -1) close( cwd );
939 TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information );
944 /***********************************************************************
947 * Find a file in a directory the hard way, by doing a case-insensitive search.
948 * The file found is appended to unix_name at pos.
949 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
951 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
954 WCHAR buffer[MAX_DIR_ENTRY_LEN];
960 int ret, used_default, is_name_8_dot_3;
962 /* try a shortcut for this directory */
964 unix_name[pos++] = '/';
965 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
966 NULL, &used_default );
967 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
968 /* so it cannot match the file we are looking for */
969 if (ret >= 0 && !used_default)
971 unix_name[pos + ret] = 0;
972 if (!stat( unix_name, &st )) return STATUS_SUCCESS;
974 if (check_case) goto not_found; /* we want an exact match */
976 if (pos > 1) unix_name[pos - 1] = 0;
977 else unix_name[1] = 0; /* keep the initial slash */
979 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
981 str.Buffer = (WCHAR *)name;
982 str.Length = length * sizeof(WCHAR);
983 str.MaximumLength = str.Length;
984 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
986 /* now look for it through the directory */
988 #ifdef VFAT_IOCTL_READDIR_BOTH
991 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
996 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
998 unix_name[pos - 1] = '/';
1001 if (!de[0].d_reclen) break;
1003 if (de[1].d_name[0])
1005 ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
1006 buffer, MAX_DIR_ENTRY_LEN );
1007 if (ret == length && !memicmpW( buffer, name, length))
1009 strcpy( unix_name + pos, de[1].d_name );
1011 return STATUS_SUCCESS;
1014 ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
1015 buffer, MAX_DIR_ENTRY_LEN );
1016 if (ret == length && !memicmpW( buffer, name, length))
1018 strcpy( unix_name + pos,
1019 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
1021 return STATUS_SUCCESS;
1023 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
1032 /* fall through to normal handling */
1034 #endif /* VFAT_IOCTL_READDIR_BOTH */
1036 if (!(dir = opendir( unix_name )))
1038 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
1039 else return FILE_GetNtStatus();
1041 unix_name[pos - 1] = '/';
1042 str.Buffer = buffer;
1043 str.MaximumLength = sizeof(buffer);
1044 while ((de = readdir( dir )))
1046 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
1047 if (ret == length && !memicmpW( buffer, name, length ))
1049 strcpy( unix_name + pos, de->d_name );
1051 return STATUS_SUCCESS;
1054 if (!is_name_8_dot_3) continue;
1056 str.Length = ret * sizeof(WCHAR);
1057 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1059 WCHAR short_nameW[12];
1060 ret = hash_short_file_name( &str, short_nameW );
1061 if (ret == length && !memicmpW( short_nameW, name, length ))
1063 strcpy( unix_name + pos, de->d_name );
1065 return STATUS_SUCCESS;
1070 goto not_found; /* avoid warning */
1073 unix_name[pos - 1] = 0;
1074 return STATUS_OBJECT_PATH_NOT_FOUND;
1078 /******************************************************************************
1081 * Get the Unix path of a DOS device.
1083 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
1085 const char *config_dir = wine_get_config_dir();
1087 char *unix_name, *new_name, *dev;
1091 /* make sure the device name is ASCII */
1092 for (i = 0; i < name_len; i++)
1093 if (name[i] <= 32 || name[i] >= 127) return STATUS_OBJECT_NAME_NOT_FOUND;
1095 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
1097 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1098 return STATUS_NO_MEMORY;
1100 strcpy( unix_name, config_dir );
1101 strcat( unix_name, "/dosdevices/" );
1102 dev = unix_name + strlen(unix_name);
1104 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
1107 /* special case for drive devices */
1108 if (name_len == 2 && dev[1] == ':')
1116 if (!stat( unix_name, &st ))
1118 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1119 unix_name_ret->Buffer = unix_name;
1120 unix_name_ret->Length = strlen(unix_name);
1121 unix_name_ret->MaximumLength = unix_len;
1122 return STATUS_SUCCESS;
1126 /* now try some defaults for it */
1127 if (!strcmp( dev, "aux" ))
1129 strcpy( dev, "com1" );
1132 if (!strcmp( dev, "prn" ))
1134 strcpy( dev, "lpt1" );
1137 if (!strcmp( dev, "nul" ))
1139 strcpy( unix_name, "/dev/null" );
1140 dev = NULL; /* last try */
1145 if (dev[1] == ':' && dev[2] == ':') /* drive device */
1147 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
1148 new_name = get_default_drive_device( unix_name );
1150 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1151 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1153 if (!new_name) break;
1155 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1156 unix_name = new_name;
1157 unix_len = strlen(unix_name) + 1;
1158 dev = NULL; /* last try */
1160 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1161 return STATUS_OBJECT_NAME_NOT_FOUND;
1165 /* return the length of the DOS namespace prefix if any */
1166 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1168 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1169 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1171 if (name->Length > sizeof(nt_prefixW) &&
1172 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1173 return sizeof(nt_prefixW) / sizeof(WCHAR);
1175 if (name->Length > sizeof(dosdev_prefixW) &&
1176 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1177 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1183 /******************************************************************************
1184 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
1186 * Convert a file name from NT namespace to Unix namespace.
1188 * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1189 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1190 * returned, but the unix name is still filled in properly.
1192 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1193 UINT disposition, BOOLEAN check_case )
1195 static const WCHAR uncW[] = {'U','N','C','\\'};
1196 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1198 NTSTATUS status = STATUS_SUCCESS;
1199 const char *config_dir = wine_get_config_dir();
1200 const WCHAR *name, *p;
1203 int pos, ret, name_len, unix_len, used_default;
1205 name = nameW->Buffer;
1206 name_len = nameW->Length / sizeof(WCHAR);
1208 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1210 if ((pos = get_dos_prefix_len( nameW )))
1212 BOOLEAN is_unc = FALSE;
1217 /* check for UNC prefix */
1218 if (name_len > 4 && !memicmpW( name, uncW, 4 ))
1226 /* check for a drive letter with path */
1227 if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
1229 /* not a drive with path, try other DOS devices */
1230 return get_dos_device( name, name_len, unix_name_ret );
1232 name += 2; /* skip drive letter */
1236 /* check for invalid characters */
1237 for (p = name; p < name + name_len; p++)
1238 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1240 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1241 unix_len += MAX_DIR_ENTRY_LEN + 3;
1242 unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
1243 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1244 return STATUS_NO_MEMORY;
1245 strcpy( unix_name, config_dir );
1246 strcat( unix_name, "/dosdevices/" );
1247 pos = strlen(unix_name);
1250 strcpy( unix_name + pos, "unc" );
1255 unix_name[pos++] = tolowerW( name[-2] );
1256 unix_name[pos++] = ':';
1260 else /* no DOS prefix, assume NT native name, map directly to Unix */
1262 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
1263 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1264 unix_len += MAX_DIR_ENTRY_LEN + 3;
1265 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1266 return STATUS_NO_MEMORY;
1270 /* try a shortcut first */
1272 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1273 NULL, &used_default );
1275 while (name_len && IS_SEPARATOR(*name))
1281 if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
1284 unix_name[pos + ret] = 0;
1285 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1286 if (!stat( unix_name, &st ))
1288 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1289 if (disposition == FILE_CREATE)
1290 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1295 if (!name_len) /* empty name -> drive root doesn't exist */
1297 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1298 return STATUS_OBJECT_PATH_NOT_FOUND;
1300 if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1302 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1303 return STATUS_OBJECT_NAME_NOT_FOUND;
1306 /* now do it component by component */
1310 const WCHAR *end, *next;
1313 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1315 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1316 name_len -= next - name;
1318 /* grow the buffer if needed */
1320 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1323 unix_len += 2 * MAX_DIR_ENTRY_LEN;
1324 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1326 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1327 return STATUS_NO_MEMORY;
1329 unix_name = new_name;
1332 status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1334 /* if this is the last element, not finding it is not necessarily fatal */
1337 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1339 status = STATUS_OBJECT_NAME_NOT_FOUND;
1340 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1342 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1343 MAX_DIR_ENTRY_LEN, NULL, &used_default );
1344 if (ret > 0 && !used_default)
1346 unix_name[pos] = '/';
1347 unix_name[pos + 1 + ret] = 0;
1348 status = STATUS_NO_SUCH_FILE;
1353 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1355 status = STATUS_OBJECT_NAME_COLLISION;
1359 if (status != STATUS_SUCCESS)
1361 /* couldn't find it at all, fail */
1362 WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1363 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1367 pos += strlen( unix_name + pos );
1371 WARN( "%s -> %s required a case-insensitive search\n",
1372 debugstr_us(nameW), debugstr_a(unix_name) );
1375 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
1376 unix_name_ret->Buffer = unix_name;
1377 unix_name_ret->Length = strlen(unix_name);
1378 unix_name_ret->MaximumLength = unix_len;
1383 /******************************************************************
1384 * RtlDoesFileExists_U (NTDLL.@)
1386 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
1388 UNICODE_STRING nt_name;
1389 ANSI_STRING unix_name;
1392 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
1393 ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
1394 if (ret) RtlFreeAnsiString( &unix_name );
1395 RtlFreeUnicodeString( &nt_name );