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>
37 #ifdef HAVE_SYS_STAT_H
38 # include <sys/stat.h>
40 #ifdef HAVE_SYS_IOCTL_H
41 #include <sys/ioctl.h>
43 #ifdef HAVE_LINUX_IOCTL_H
44 #include <linux/ioctl.h>
46 #ifdef HAVE_SYS_PARAM_H
47 #include <sys/param.h>
49 #ifdef HAVE_SYS_MOUNT_H
50 #include <sys/mount.h>
57 #define NONAMELESSUNION
58 #define NONAMELESSSTRUCT
65 #include "ntdll_misc.h"
66 #include "wine/unicode.h"
67 #include "wine/server.h"
68 #include "wine/library.h"
69 #include "wine/debug.h"
71 WINE_DEFAULT_DEBUG_CHANNEL(file);
74 #undef VFAT_IOCTL_READDIR_BOTH
79 /* We want the real kernel dirent structure, not the libc one */
84 unsigned short d_reclen;
88 /* Define the VFAT ioctl to get both short and long file names */
89 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
92 # define O_DIRECTORY 0200000 /* must be directory */
101 unsigned short d_reclen;
102 unsigned char d_type;
106 static inline int getdents64( int fd, KERNEL_DIRENT64 *de, unsigned int size )
109 __asm__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
111 : "0" (220 /*NR_getdents64*/), "r" (fd), "c" (de), "d" (size)
126 #define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
127 #define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
129 #define INVALID_NT_CHARS '*','?','<','>','|','"'
130 #define INVALID_DOS_CHARS INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
132 #define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
134 static int show_dir_symlinks = -1;
135 static int show_dot_files;
137 /* at some point we may want to allow Winelib apps to set this */
138 static const int is_case_sensitive = FALSE;
140 static CRITICAL_SECTION dir_section;
141 static CRITICAL_SECTION_DEBUG critsect_debug =
144 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
145 0, 0, { 0, (DWORD)(__FILE__ ": dir_section") }
147 static CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
150 /* check if a given Unicode char is OK in a DOS short name */
151 static inline BOOL is_invalid_dos_char( WCHAR ch )
153 static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
154 if (ch > 0x7f) return TRUE;
155 return strchrW( invalid_chars, ch ) != NULL;
158 /***********************************************************************
159 * get_default_com_device
161 * Return the default device to use for serial ports.
163 static char *get_default_com_device( int num )
167 if (!num || num > 9) return ret;
169 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
172 strcpy( ret, "/dev/ttyS0" );
173 ret[strlen(ret) - 1] = '0' + num - 1;
176 FIXME( "no known default for device com%d\n", num );
182 /***********************************************************************
183 * get_default_lpt_device
185 * Return the default device to use for parallel ports.
187 static char *get_default_lpt_device( int num )
191 if (!num || num > 9) return ret;
193 ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
196 strcpy( ret, "/dev/lp0" );
197 ret[strlen(ret) - 1] = '0' + num - 1;
200 FIXME( "no known default for device lpt%d\n", num );
206 /***********************************************************************
207 * parse_mount_entries
209 * Parse mount entries looking for a given device. Helper for get_default_drive_device.
213 #include <sys/vfstab.h>
214 static char *parse_vfstab_entries( FILE *f, dev_t dev, ino_t ino)
217 struct vfstab vfs_entry;
218 struct vfstab *entry=&vfs_entry;
222 while (! getvfsent( f, entry ))
224 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
225 if (!strcmp( entry->vfs_fstype, "nfs" ) ||
226 !strcmp( entry->vfs_fstype, "smbfs" ) ||
227 !strcmp( entry->vfs_fstype, "ncpfs" )) continue;
229 if (stat( entry->vfs_mountp, &st ) == -1) continue;
230 if (st.st_dev != dev || st.st_ino != ino) continue;
231 if (!strcmp( entry->vfs_fstype, "fd" ))
233 if ((device = strstr( entry->vfs_mntopts, "dev=" )))
235 char *p = strchr( device + 4, ',' );
241 return entry->vfs_special;
248 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
250 struct mntent *entry;
254 while ((entry = getmntent( f )))
256 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
257 if (!strcmp( entry->mnt_type, "nfs" ) ||
258 !strcmp( entry->mnt_type, "smbfs" ) ||
259 !strcmp( entry->mnt_type, "ncpfs" )) continue;
261 if (stat( entry->mnt_dir, &st ) == -1) continue;
262 if (st.st_dev != dev || st.st_ino != ino) continue;
263 if (!strcmp( entry->mnt_type, "supermount" ))
265 if ((device = strstr( entry->mnt_opts, "dev=" )))
267 char *p = strchr( device + 4, ',' );
273 return entry->mnt_fsname;
281 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
286 while ((entry = getfsent()))
288 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
289 if (!strcmp( entry->fs_vfstype, "nfs" ) ||
290 !strcmp( entry->fs_vfstype, "smbfs" ) ||
291 !strcmp( entry->fs_vfstype, "ncpfs" )) continue;
293 if (stat( entry->fs_file, &st ) == -1) continue;
294 if (st.st_dev != dev || st.st_ino != ino) continue;
295 return entry->fs_spec;
301 #include <sys/mnttab.h>
302 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
305 volatile struct mnttab mntentry;
306 struct mnttab *entry=&mntentry;
311 while (( ! getmntent( f , entry) ))
313 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
314 if (!strcmp( entry->mnt_fstype, "nfs" ) ||
315 !strcmp( entry->mnt_fstype, "smbfs" ) ||
316 !strcmp( entry->mnt_fstype, "ncpfs" )) continue;
318 if (stat( entry->mnt_mountp, &st ) == -1) continue;
319 if (st.st_dev != dev || st.st_ino != ino) continue;
320 if (!strcmp( entry->mnt_fstype, "fd" ))
322 if ((device = strstr( entry->mnt_mntopts, "dev=" )))
324 char *p = strchr( device + 4, ',' );
330 return entry->mnt_special;
336 /***********************************************************************
337 * get_default_drive_device
339 * Return the default device to use for a given drive mount point.
341 static char *get_default_drive_device( const char *root )
351 /* try to open it first to force it to get mounted */
352 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
354 res = fstat( fd, &st );
357 /* now try normal stat just in case */
358 if (res == -1) res = stat( root, &st );
359 if (res == -1) return NULL;
361 RtlEnterCriticalSection( &dir_section );
363 if ((f = fopen( "/etc/mtab", "r" )))
365 device = parse_mount_entries( f, st.st_dev, st.st_ino );
368 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
369 if (!device && (f = fopen( "/etc/fstab", "r" )))
371 device = parse_mount_entries( f, st.st_dev, st.st_ino );
376 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
377 if (ret) strcpy( ret, device );
379 RtlLeaveCriticalSection( &dir_section );
381 #elif defined( __FreeBSD__ )
386 /* try to open it first to force it to get mounted */
387 if ((fd = open( root, O_RDONLY )) != -1)
389 res = fstat( fd, &st );
392 /* now try normal stat just in case */
393 if (res == -1) res = stat( root, &st );
394 if (res == -1) return NULL;
396 RtlEnterCriticalSection( &dir_section );
398 /* The FreeBSD parse_mount_entries doesn't require a file argument, so just
399 * pass NULL. Leave the argument in for symmetry.
401 device = parse_mount_entries( NULL, st.st_dev, st.st_ino );
404 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
405 if (ret) strcpy( ret, device );
407 RtlLeaveCriticalSection( &dir_section );
415 /* try to open it first to force it to get mounted */
416 if ((fd = open( root, O_RDONLY )) != -1)
418 res = fstat( fd, &st );
421 /* now try normal stat just in case */
422 if (res == -1) res = stat( root, &st );
423 if (res == -1) return NULL;
425 RtlEnterCriticalSection( &dir_section );
427 if ((f = fopen( "/etc/mnttab", "r" )))
429 device = parse_mount_entries( f, st.st_dev, st.st_ino);
432 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
433 if (!device && (f = fopen( "/etc/vfstab", "r" )))
435 device = parse_vfstab_entries( f, st.st_dev, st.st_ino );
440 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
441 if (ret) strcpy( ret, device );
443 RtlLeaveCriticalSection( &dir_section );
445 #elif defined(__APPLE__)
446 struct statfs *mntStat;
452 static const char path_bsd_device[] = "/dev/disk";
455 res = stat( root, &st );
456 if (res == -1) return NULL;
461 RtlEnterCriticalSection( &dir_section );
463 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
465 for (i = 0; i < mntSize && !ret; i++)
467 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
468 if (st.st_dev != dev || st.st_ino != ino) continue;
470 /* FIXME add support for mounted network drive */
471 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
473 /* set return value to the corresponding raw BSD node */
474 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
477 strcpy(ret, "/dev/r");
478 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
482 RtlLeaveCriticalSection( &dir_section );
485 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
491 /***********************************************************************
494 * Initialize the show_dir_symlinks and show_dot_files options.
496 static void init_options(void)
498 static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
499 'S','o','f','t','w','a','r','e','\\',
500 'W','i','n','e','\\','W','i','n','e','\\',
501 'C','o','n','f','i','g','\\','W','i','n','e',0};
502 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
503 static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
507 OBJECT_ATTRIBUTES attr;
508 UNICODE_STRING nameW;
510 show_dot_files = show_dir_symlinks = 0;
512 attr.Length = sizeof(attr);
513 attr.RootDirectory = 0;
514 attr.ObjectName = &nameW;
516 attr.SecurityDescriptor = NULL;
517 attr.SecurityQualityOfService = NULL;
518 RtlInitUnicodeString( &nameW, WineW );
520 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
522 RtlInitUnicodeString( &nameW, ShowDotFilesW );
523 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
525 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
526 show_dot_files = IS_OPTION_TRUE( str[0] );
528 RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
529 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
531 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
532 show_dir_symlinks = IS_OPTION_TRUE( str[0] );
539 /***********************************************************************
542 * Check if the specified file should be hidden based on its name and the show dot files option.
544 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
548 if (show_dir_symlinks == -1) init_options();
549 if (show_dot_files) return FALSE;
551 end = p = name->Buffer + name->Length/sizeof(WCHAR);
552 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
553 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
554 if (p == end || *p != '.') return FALSE;
555 /* make sure it isn't '.' or '..' */
556 if (p + 1 == end) return FALSE;
557 if (p[1] == '.' && p + 2 == end) return FALSE;
562 /***********************************************************************
563 * hash_short_file_name
565 * Transform a Unix file name into a hashed DOS name. If the name is a valid
566 * DOS name, it is converted to upper-case; otherwise it is replaced by a
567 * hashed version that fits in 8.3 format.
568 * 'buffer' must be at least 12 characters long.
569 * Returns length of short name in bytes; short name is NOT null-terminated.
571 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
573 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
575 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
580 /* Compute the hash code of the file name */
581 /* If you know something about hash functions, feel free to */
582 /* insert a better algorithm here... */
583 if (!is_case_sensitive)
585 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
586 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
587 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
591 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
592 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
593 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
596 /* Find last dot for start of the extension */
597 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
599 /* Copy first 4 chars, replacing invalid chars with '_' */
600 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
602 if (p == end || p == ext) break;
603 *dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
605 /* Pad to 5 chars with '~' */
606 while (i-- >= 0) *dst++ = '~';
608 /* Insert hash code converted to 3 ASCII chars */
609 *dst++ = hash_chars[(hash >> 10) & 0x1f];
610 *dst++ = hash_chars[(hash >> 5) & 0x1f];
611 *dst++ = hash_chars[hash & 0x1f];
613 /* Copy the first 3 chars of the extension (if any) */
617 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
618 *dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
624 /***********************************************************************
627 * Check a long file name against a mask.
629 * Tests (done in W95 DOS shell - case insensitive):
630 * *.txt test1.test.txt *
632 * *.t??????.t* test1.ta.tornado.txt *
633 * *tornado* test1.ta.tornado.txt *
634 * t*t test1.ta.tornado.txt *
636 * ?est??? test1.txt -
637 * *test1.txt* test1.txt *
638 * h?l?o*t.dat hellothisisatest.dat *
640 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
643 const WCHAR *name = name_str->Buffer;
644 const WCHAR *mask = mask_str->Buffer;
645 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
646 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
647 const WCHAR *lastjoker = NULL;
648 const WCHAR *next_to_retry = NULL;
650 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
652 while (name < name_end && mask < mask_end)
658 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
659 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
662 /* skip to the next match after the joker(s) */
663 if (is_case_sensitive)
664 while (name < name_end && (*name != *mask)) name++;
666 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
667 next_to_retry = name;
674 if (is_case_sensitive) mismatch = (*mask != *name);
675 else mismatch = (toupperW(*mask) != toupperW(*name));
681 if (mask == mask_end)
683 if (name == name_end) return TRUE;
684 if (lastjoker) mask = lastjoker;
687 else /* mismatch ! */
689 if (lastjoker) /* we had an '*', so we can try unlimitedly */
693 /* this scan sequence was a mismatch, so restart
694 * 1 char after the first char we checked last time */
696 name = next_to_retry;
698 else return FALSE; /* bad luck */
703 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
704 mask++; /* Ignore trailing '.' or '*' in mask */
705 return (name == name_end && mask == mask_end);
709 /***********************************************************************
712 * helper for NtQueryDirectoryFile
714 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
715 const char *long_name, const char *short_name,
716 const UNICODE_STRING *mask )
718 FILE_BOTH_DIR_INFORMATION *info;
719 int i, long_len, short_len, total_len;
721 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
722 WCHAR short_nameW[12];
725 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
726 if (long_len == -1) return NULL;
728 str.Buffer = long_nameW;
729 str.Length = long_len * sizeof(WCHAR);
730 str.MaximumLength = sizeof(long_nameW);
734 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
735 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
736 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
738 else /* generate a short name if necessary */
743 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
744 short_len = hash_short_file_name( &str, short_nameW );
747 TRACE( "long %s short %s mask %s\n",
748 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
750 if (mask && !match_filename( &str, mask ))
752 if (!short_len) return NULL; /* no short name to match */
753 str.Buffer = short_nameW;
754 str.Length = short_len * sizeof(WCHAR);
755 str.MaximumLength = sizeof(short_nameW);
756 if (!match_filename( &str, mask )) return NULL;
759 total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
760 info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
762 if (*pos + total_len > max_length) total_len = max_length - *pos;
764 if (lstat( long_name, &st ) == -1) return NULL;
765 if (S_ISLNK( st.st_mode ))
767 if (stat( long_name, &st ) == -1) return NULL;
768 if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
771 info->NextEntryOffset = total_len;
772 info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
774 RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
775 RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
776 RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
777 RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
779 if (S_ISDIR(st.st_mode))
781 info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
782 info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
786 info->EndOfFile.QuadPart = st.st_size;
787 info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
788 info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
791 if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
792 info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
794 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
795 info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
797 info->EaSize = 0; /* FIXME */
798 info->ShortNameLength = short_len * sizeof(WCHAR);
799 for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
800 info->FileNameLength = long_len * sizeof(WCHAR);
801 memcpy( info->FileName, long_nameW,
802 min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
809 /***********************************************************************
810 * read_directory_vfat
812 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
814 #ifdef VFAT_IOCTL_READDIR_BOTH
815 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
816 BOOLEAN single_entry, const UNICODE_STRING *mask,
817 BOOLEAN restart_scan )
822 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
823 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
825 io->u.Status = STATUS_SUCCESS;
827 if (restart_scan) lseek( fd, 0, SEEK_SET );
829 if (length < max_dir_info_size) /* we may have to return a partial entry here */
831 off_t old_pos = lseek( fd, 0, SEEK_CUR );
833 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
834 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
838 if (!de[0].d_reclen) break;
840 info = append_entry( buffer, &io->Information, length,
841 de[1].d_name, de[0].d_name, mask );
843 info = append_entry( buffer, &io->Information, length,
844 de[0].d_name, NULL, mask );
848 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
850 io->u.Status = STATUS_BUFFER_OVERFLOW;
851 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
855 old_pos = lseek( fd, 0, SEEK_CUR );
856 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
859 else /* we'll only return full entries, no need to worry about overflow */
861 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
862 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
866 if (!de[0].d_reclen) break;
868 info = append_entry( buffer, &io->Information, length,
869 de[1].d_name, de[0].d_name, mask );
871 info = append_entry( buffer, &io->Information, length,
872 de[0].d_name, NULL, mask );
876 if (single_entry) break;
877 /* check if we still have enough space for the largest possible entry */
878 if (io->Information + max_dir_info_size > length) break;
880 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
884 if (last_info) last_info->NextEntryOffset = 0;
885 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
888 #endif /* VFAT_IOCTL_READDIR_BOTH */
891 /***********************************************************************
892 * read_directory_getdents
894 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
897 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
898 BOOLEAN single_entry, const UNICODE_STRING *mask,
899 BOOLEAN restart_scan )
902 size_t size = length;
904 char local_buffer[8192];
905 KERNEL_DIRENT64 *data, *de;
906 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
907 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
909 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
911 size = sizeof(local_buffer);
912 data = (KERNEL_DIRENT64 *)local_buffer;
915 if (restart_scan) lseek( fd, 0, SEEK_SET );
916 else if (length < max_dir_info_size) /* we may have to return a partial entry here */
918 old_pos = lseek( fd, 0, SEEK_CUR );
919 if (old_pos == -1 && errno == ENOENT)
921 io->u.Status = STATUS_NO_MORE_FILES;
927 io->u.Status = STATUS_SUCCESS;
929 res = getdents64( fd, data, size );
934 io->u.Status = FILE_GetNtStatus();
945 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
949 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
951 io->u.Status = STATUS_BUFFER_OVERFLOW;
952 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
955 /* check if we still have enough space for the largest possible entry */
956 if (single_entry || io->Information + max_dir_info_size > length)
958 if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
963 /* move on to the next entry */
964 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
967 res = getdents64( fd, data, size );
972 if (last_info) last_info->NextEntryOffset = 0;
973 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
976 if ((char *)data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
979 #endif /* USE_GETDENTS */
982 /***********************************************************************
983 * read_directory_readdir
985 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
987 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
988 BOOLEAN single_entry, const UNICODE_STRING *mask,
989 BOOLEAN restart_scan )
992 off_t i, old_pos = 0;
994 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
995 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
997 if (!(dir = opendir( "." )))
999 io->u.Status = FILE_GetNtStatus();
1005 old_pos = lseek( fd, 0, SEEK_CUR );
1006 /* skip the right number of entries */
1007 for (i = 0; i < old_pos; i++)
1009 if (!readdir( dir ))
1012 io->u.Status = STATUS_NO_MORE_FILES;
1017 io->u.Status = STATUS_SUCCESS;
1019 while ((de = readdir( dir )))
1022 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
1026 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
1028 io->u.Status = STATUS_BUFFER_OVERFLOW;
1029 old_pos--; /* restore pos to previous entry */
1032 if (single_entry) break;
1033 /* check if we still have enough space for the largest possible entry */
1034 if (io->Information + max_dir_info_size > length) break;
1038 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
1041 if (last_info) last_info->NextEntryOffset = 0;
1042 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
1046 /******************************************************************************
1047 * NtQueryDirectoryFile [NTDLL.@]
1048 * ZwQueryDirectoryFile [NTDLL.@]
1050 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
1051 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
1052 PIO_STATUS_BLOCK io,
1053 PVOID buffer, ULONG length,
1054 FILE_INFORMATION_CLASS info_class,
1055 BOOLEAN single_entry,
1056 PUNICODE_STRING mask,
1057 BOOLEAN restart_scan )
1061 TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
1062 handle, event, apc_routine, apc_context, io, buffer,
1063 length, info_class, single_entry, debugstr_us(mask),
1066 if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
1068 if (event || apc_routine)
1070 FIXME( "Unsupported yet option\n" );
1071 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1073 if (info_class != FileBothDirectoryInformation)
1075 FIXME( "Unsupported file info class %d\n", info_class );
1076 return io->u.Status = STATUS_NOT_IMPLEMENTED;
1079 if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL )) != STATUS_SUCCESS)
1080 return io->u.Status;
1082 io->Information = 0;
1084 RtlEnterCriticalSection( &dir_section );
1086 if (show_dir_symlinks == -1) init_options();
1088 if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
1090 #ifdef VFAT_IOCTL_READDIR_BOTH
1091 if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
1094 if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
1096 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
1098 if (fchdir( cwd ) == -1) chdir( "/" );
1100 else io->u.Status = FILE_GetNtStatus();
1102 RtlLeaveCriticalSection( &dir_section );
1104 wine_server_release_fd( handle, fd );
1105 if (cwd != -1) close( cwd );
1106 TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information );
1107 return io->u.Status;
1111 /***********************************************************************
1114 * Find a file in a directory the hard way, by doing a case-insensitive search.
1115 * The file found is appended to unix_name at pos.
1116 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
1118 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
1121 WCHAR buffer[MAX_DIR_ENTRY_LEN];
1127 int ret, used_default, is_name_8_dot_3;
1129 /* try a shortcut for this directory */
1131 unix_name[pos++] = '/';
1132 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
1133 NULL, &used_default );
1134 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
1135 /* so it cannot match the file we are looking for */
1136 if (ret >= 0 && !used_default)
1138 unix_name[pos + ret] = 0;
1139 if (!stat( unix_name, &st )) return STATUS_SUCCESS;
1141 if (check_case) goto not_found; /* we want an exact match */
1143 if (pos > 1) unix_name[pos - 1] = 0;
1144 else unix_name[1] = 0; /* keep the initial slash */
1146 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
1148 str.Buffer = (WCHAR *)name;
1149 str.Length = length * sizeof(WCHAR);
1150 str.MaximumLength = str.Length;
1151 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
1153 /* now look for it through the directory */
1155 #ifdef VFAT_IOCTL_READDIR_BOTH
1156 if (is_name_8_dot_3)
1158 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
1161 KERNEL_DIRENT de[2];
1163 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
1165 unix_name[pos - 1] = '/';
1168 if (!de[0].d_reclen) break;
1170 if (de[1].d_name[0])
1172 ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
1173 buffer, MAX_DIR_ENTRY_LEN );
1174 if (ret == length && !memicmpW( buffer, name, length))
1176 strcpy( unix_name + pos, de[1].d_name );
1178 return STATUS_SUCCESS;
1181 ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
1182 buffer, MAX_DIR_ENTRY_LEN );
1183 if (ret == length && !memicmpW( buffer, name, length))
1185 strcpy( unix_name + pos,
1186 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
1188 return STATUS_SUCCESS;
1190 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
1199 /* fall through to normal handling */
1201 #endif /* VFAT_IOCTL_READDIR_BOTH */
1203 if (!(dir = opendir( unix_name )))
1205 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
1206 else return FILE_GetNtStatus();
1208 unix_name[pos - 1] = '/';
1209 str.Buffer = buffer;
1210 str.MaximumLength = sizeof(buffer);
1211 while ((de = readdir( dir )))
1213 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
1214 if (ret == length && !memicmpW( buffer, name, length ))
1216 strcpy( unix_name + pos, de->d_name );
1218 return STATUS_SUCCESS;
1221 if (!is_name_8_dot_3) continue;
1223 str.Length = ret * sizeof(WCHAR);
1224 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1226 WCHAR short_nameW[12];
1227 ret = hash_short_file_name( &str, short_nameW );
1228 if (ret == length && !memicmpW( short_nameW, name, length ))
1230 strcpy( unix_name + pos, de->d_name );
1232 return STATUS_SUCCESS;
1237 goto not_found; /* avoid warning */
1240 unix_name[pos - 1] = 0;
1241 return STATUS_OBJECT_PATH_NOT_FOUND;
1245 /******************************************************************************
1248 * Get the Unix path of a DOS device.
1250 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
1252 const char *config_dir = wine_get_config_dir();
1254 char *unix_name, *new_name, *dev;
1258 /* make sure the device name is ASCII */
1259 for (i = 0; i < name_len; i++)
1260 if (name[i] <= 32 || name[i] >= 127) return STATUS_OBJECT_NAME_NOT_FOUND;
1262 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
1264 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1265 return STATUS_NO_MEMORY;
1267 strcpy( unix_name, config_dir );
1268 strcat( unix_name, "/dosdevices/" );
1269 dev = unix_name + strlen(unix_name);
1271 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
1274 /* special case for drive devices */
1275 if (name_len == 2 && dev[1] == ':')
1283 if (!stat( unix_name, &st ))
1285 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1286 unix_name_ret->Buffer = unix_name;
1287 unix_name_ret->Length = strlen(unix_name);
1288 unix_name_ret->MaximumLength = unix_len;
1289 return STATUS_SUCCESS;
1293 /* now try some defaults for it */
1294 if (!strcmp( dev, "aux" ))
1296 strcpy( dev, "com1" );
1299 if (!strcmp( dev, "prn" ))
1301 strcpy( dev, "lpt1" );
1304 if (!strcmp( dev, "nul" ))
1306 strcpy( unix_name, "/dev/null" );
1307 dev = NULL; /* last try */
1312 if (dev[1] == ':' && dev[2] == ':') /* drive device */
1314 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
1315 new_name = get_default_drive_device( unix_name );
1317 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1318 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1320 if (!new_name) break;
1322 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1323 unix_name = new_name;
1324 unix_len = strlen(unix_name) + 1;
1325 dev = NULL; /* last try */
1327 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1328 return STATUS_OBJECT_NAME_NOT_FOUND;
1332 /* return the length of the DOS namespace prefix if any */
1333 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1335 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1336 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1338 if (name->Length > sizeof(nt_prefixW) &&
1339 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1340 return sizeof(nt_prefixW) / sizeof(WCHAR);
1342 if (name->Length > sizeof(dosdev_prefixW) &&
1343 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1344 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1350 /******************************************************************************
1351 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
1353 * Convert a file name from NT namespace to Unix namespace.
1355 * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1356 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1357 * returned, but the unix name is still filled in properly.
1359 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1360 UINT disposition, BOOLEAN check_case )
1362 static const WCHAR uncW[] = {'U','N','C','\\'};
1363 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1365 NTSTATUS status = STATUS_SUCCESS;
1366 const char *config_dir = wine_get_config_dir();
1367 const WCHAR *name, *p;
1370 int pos, ret, name_len, unix_len, used_default;
1372 name = nameW->Buffer;
1373 name_len = nameW->Length / sizeof(WCHAR);
1375 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1377 if ((pos = get_dos_prefix_len( nameW )))
1379 BOOLEAN is_unc = FALSE;
1384 /* check for UNC prefix */
1385 if (name_len > 4 && !memicmpW( name, uncW, 4 ))
1393 /* check for a drive letter with path */
1394 if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
1396 /* not a drive with path, try other DOS devices */
1397 return get_dos_device( name, name_len, unix_name_ret );
1399 name += 2; /* skip drive letter */
1403 /* check for invalid characters */
1404 for (p = name; p < name + name_len; p++)
1405 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1407 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1408 unix_len += MAX_DIR_ENTRY_LEN + 3;
1409 unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
1410 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1411 return STATUS_NO_MEMORY;
1412 strcpy( unix_name, config_dir );
1413 strcat( unix_name, "/dosdevices/" );
1414 pos = strlen(unix_name);
1417 strcpy( unix_name + pos, "unc" );
1422 unix_name[pos++] = tolowerW( name[-2] );
1423 unix_name[pos++] = ':';
1427 else /* no DOS prefix, assume NT native name, map directly to Unix */
1429 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
1430 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1431 unix_len += MAX_DIR_ENTRY_LEN + 3;
1432 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1433 return STATUS_NO_MEMORY;
1437 /* try a shortcut first */
1439 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1440 NULL, &used_default );
1442 while (name_len && IS_SEPARATOR(*name))
1448 if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
1451 unix_name[pos + ret] = 0;
1452 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1453 if (!stat( unix_name, &st ))
1455 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1456 if (disposition == FILE_CREATE)
1457 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1462 if (!name_len) /* empty name -> drive root doesn't exist */
1464 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1465 return STATUS_OBJECT_PATH_NOT_FOUND;
1467 if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1469 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1470 return STATUS_OBJECT_NAME_NOT_FOUND;
1473 /* now do it component by component */
1477 const WCHAR *end, *next;
1480 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1482 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1483 name_len -= next - name;
1485 /* grow the buffer if needed */
1487 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1490 unix_len += 2 * MAX_DIR_ENTRY_LEN;
1491 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1493 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1494 return STATUS_NO_MEMORY;
1496 unix_name = new_name;
1499 status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1501 /* if this is the last element, not finding it is not necessarily fatal */
1504 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1506 status = STATUS_OBJECT_NAME_NOT_FOUND;
1507 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1509 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1510 MAX_DIR_ENTRY_LEN, NULL, &used_default );
1511 if (ret > 0 && !used_default)
1513 unix_name[pos] = '/';
1514 unix_name[pos + 1 + ret] = 0;
1515 status = STATUS_NO_SUCH_FILE;
1520 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1522 status = STATUS_OBJECT_NAME_COLLISION;
1526 if (status != STATUS_SUCCESS)
1528 /* couldn't find it at all, fail */
1529 WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1530 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1534 pos += strlen( unix_name + pos );
1538 WARN( "%s -> %s required a case-insensitive search\n",
1539 debugstr_us(nameW), debugstr_a(unix_name) );
1542 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
1543 unix_name_ret->Buffer = unix_name;
1544 unix_name_ret->Length = strlen(unix_name);
1545 unix_name_ret->MaximumLength = unix_len;
1550 /******************************************************************
1551 * RtlDoesFileExists_U (NTDLL.@)
1553 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
1555 UNICODE_STRING nt_name;
1556 ANSI_STRING unix_name;
1559 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
1560 ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
1561 if (ret) RtlFreeAnsiString( &unix_name );
1562 RtlFreeUnicodeString( &nt_name );