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.
212 static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
214 struct mntent *entry;
218 while ((entry = getmntent( f )))
220 /* don't even bother stat'ing network mounts, there's no meaningful device anyway */
221 if (!strcmp( entry->mnt_type, "nfs" ) ||
222 !strcmp( entry->mnt_type, "smbfs" ) ||
223 !strcmp( entry->mnt_type, "ncpfs" )) continue;
225 if (stat( entry->mnt_dir, &st ) == -1) continue;
226 if (st.st_dev != dev || st.st_ino != ino) continue;
227 if (!strcmp( entry->mnt_type, "supermount" ))
229 if ((device = strstr( entry->mnt_opts, "dev=" )))
231 char *p = strchr( device + 4, ',' );
237 return entry->mnt_fsname;
243 /***********************************************************************
244 * get_default_drive_device
246 * Return the default device to use for a given drive mount point.
248 static char *get_default_drive_device( const char *root )
258 /* try to open it first to force it to get mounted */
259 if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
261 res = fstat( fd, &st );
264 /* now try normal stat just in case */
265 if (res == -1) res = stat( root, &st );
266 if (res == -1) return NULL;
268 RtlEnterCriticalSection( &dir_section );
270 if ((f = fopen( "/etc/mtab", "r" )))
272 device = parse_mount_entries( f, st.st_dev, st.st_ino );
275 /* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
276 if (!device && (f = fopen( "/etc/fstab", "r" )))
278 device = parse_mount_entries( f, st.st_dev, st.st_ino );
283 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
284 if (ret) strcpy( ret, device );
286 RtlLeaveCriticalSection( &dir_section );
287 #elif defined(__APPLE__)
288 struct statfs *mntStat;
294 static const char path_bsd_device[] = "/dev/disk";
297 res = stat( root, &st );
298 if (res == -1) return NULL;
303 RtlEnterCriticalSection( &dir_section );
305 mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
307 for (i = 0; i < mntSize && !ret; i++)
309 if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
310 if (st.st_dev != dev || st.st_ino != ino) continue;
312 /* FIXME add support for mounted network drive */
313 if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
315 /* set return value to the corresponding raw BSD node */
316 ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
319 strcpy(ret, "/dev/r");
320 strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
324 RtlLeaveCriticalSection( &dir_section );
327 if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
333 /***********************************************************************
336 * Initialize the show_dir_symlinks and show_dot_files options.
338 static void init_options(void)
340 static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
341 'S','o','f','t','w','a','r','e','\\',
342 'W','i','n','e','\\','W','i','n','e','\\',
343 'C','o','n','f','i','g','\\','W','i','n','e',0};
344 static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
345 static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
349 OBJECT_ATTRIBUTES attr;
350 UNICODE_STRING nameW;
352 show_dot_files = show_dir_symlinks = 0;
354 attr.Length = sizeof(attr);
355 attr.RootDirectory = 0;
356 attr.ObjectName = &nameW;
358 attr.SecurityDescriptor = NULL;
359 attr.SecurityQualityOfService = NULL;
360 RtlInitUnicodeString( &nameW, WineW );
362 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
364 RtlInitUnicodeString( &nameW, ShowDotFilesW );
365 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
367 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
368 show_dot_files = IS_OPTION_TRUE( str[0] );
370 RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
371 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
373 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
374 show_dir_symlinks = IS_OPTION_TRUE( str[0] );
381 /***********************************************************************
384 * Check if the specified file should be hidden based on its name and the show dot files option.
386 BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
390 if (show_dir_symlinks == -1) init_options();
391 if (show_dot_files) return FALSE;
393 end = p = name->Buffer + name->Length/sizeof(WCHAR);
394 while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
395 while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
396 if (p == end || *p != '.') return FALSE;
397 /* make sure it isn't '.' or '..' */
398 if (p + 1 == end) return FALSE;
399 if (p[1] == '.' && p + 2 == end) return FALSE;
404 /***********************************************************************
405 * hash_short_file_name
407 * Transform a Unix file name into a hashed DOS name. If the name is a valid
408 * DOS name, it is converted to upper-case; otherwise it is replaced by a
409 * hashed version that fits in 8.3 format.
410 * 'buffer' must be at least 12 characters long.
411 * Returns length of short name in bytes; short name is NOT null-terminated.
413 static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
415 static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
417 LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
422 /* Compute the hash code of the file name */
423 /* If you know something about hash functions, feel free to */
424 /* insert a better algorithm here... */
425 if (!is_case_sensitive)
427 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
428 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
429 hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
433 for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
434 hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
435 hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
438 /* Find last dot for start of the extension */
439 for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
441 /* Copy first 4 chars, replacing invalid chars with '_' */
442 for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
444 if (p == end || p == ext) break;
445 *dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
447 /* Pad to 5 chars with '~' */
448 while (i-- >= 0) *dst++ = '~';
450 /* Insert hash code converted to 3 ASCII chars */
451 *dst++ = hash_chars[(hash >> 10) & 0x1f];
452 *dst++ = hash_chars[(hash >> 5) & 0x1f];
453 *dst++ = hash_chars[hash & 0x1f];
455 /* Copy the first 3 chars of the extension (if any) */
459 for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
460 *dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
466 /***********************************************************************
469 * Check a long file name against a mask.
471 * Tests (done in W95 DOS shell - case insensitive):
472 * *.txt test1.test.txt *
474 * *.t??????.t* test1.ta.tornado.txt *
475 * *tornado* test1.ta.tornado.txt *
476 * t*t test1.ta.tornado.txt *
478 * ?est??? test1.txt -
479 * *test1.txt* test1.txt *
480 * h?l?o*t.dat hellothisisatest.dat *
482 static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
485 const WCHAR *name = name_str->Buffer;
486 const WCHAR *mask = mask_str->Buffer;
487 const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
488 const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
489 const WCHAR *lastjoker = NULL;
490 const WCHAR *next_to_retry = NULL;
492 TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
494 while (name < name_end && mask < mask_end)
500 while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
501 if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
504 /* skip to the next match after the joker(s) */
505 if (is_case_sensitive)
506 while (name < name_end && (*name != *mask)) name++;
508 while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
509 next_to_retry = name;
516 if (is_case_sensitive) mismatch = (*mask != *name);
517 else mismatch = (toupperW(*mask) != toupperW(*name));
523 if (mask == mask_end)
525 if (name == name_end) return TRUE;
526 if (lastjoker) mask = lastjoker;
529 else /* mismatch ! */
531 if (lastjoker) /* we had an '*', so we can try unlimitedly */
535 /* this scan sequence was a mismatch, so restart
536 * 1 char after the first char we checked last time */
538 name = next_to_retry;
540 else return FALSE; /* bad luck */
545 while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
546 mask++; /* Ignore trailing '.' or '*' in mask */
547 return (name == name_end && mask == mask_end);
551 /***********************************************************************
554 * helper for NtQueryDirectoryFile
556 static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
557 const char *long_name, const char *short_name,
558 const UNICODE_STRING *mask )
560 FILE_BOTH_DIR_INFORMATION *info;
561 int i, long_len, short_len, total_len;
563 WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
564 WCHAR short_nameW[12];
567 long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
568 if (long_len == -1) return NULL;
570 str.Buffer = long_nameW;
571 str.Length = long_len * sizeof(WCHAR);
572 str.MaximumLength = sizeof(long_nameW);
576 short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
577 short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
578 if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
580 else /* generate a short name if necessary */
585 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
586 short_len = hash_short_file_name( &str, short_nameW );
589 TRACE( "long %s short %s mask %s\n",
590 debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
592 if (mask && !match_filename( &str, mask ))
594 if (!short_len) return NULL; /* no short name to match */
595 str.Buffer = short_nameW;
596 str.Length = short_len * sizeof(WCHAR);
597 str.MaximumLength = sizeof(short_nameW);
598 if (!match_filename( &str, mask )) return NULL;
601 total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
602 info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
604 if (*pos + total_len > max_length) total_len = max_length - *pos;
606 if (lstat( long_name, &st ) == -1) return NULL;
607 if (S_ISLNK( st.st_mode ))
609 if (stat( long_name, &st ) == -1) return NULL;
610 if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
613 info->NextEntryOffset = total_len;
614 info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
616 RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
617 RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
618 RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
619 RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
621 if (S_ISDIR(st.st_mode))
623 info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
624 info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
628 info->EndOfFile.QuadPart = st.st_size;
629 info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
630 info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
633 if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
634 info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
636 if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
637 info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
639 info->EaSize = 0; /* FIXME */
640 info->ShortNameLength = short_len * sizeof(WCHAR);
641 for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
642 info->FileNameLength = long_len * sizeof(WCHAR);
643 memcpy( info->FileName, long_nameW,
644 min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
651 /***********************************************************************
652 * read_directory_vfat
654 * Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
656 #ifdef VFAT_IOCTL_READDIR_BOTH
657 static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
658 BOOLEAN single_entry, const UNICODE_STRING *mask,
659 BOOLEAN restart_scan )
664 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
665 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
667 io->u.Status = STATUS_SUCCESS;
669 if (restart_scan) lseek( fd, 0, SEEK_SET );
671 if (length < max_dir_info_size) /* we may have to return a partial entry here */
673 off_t old_pos = lseek( fd, 0, SEEK_CUR );
675 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
676 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
680 if (!de[0].d_reclen) break;
682 info = append_entry( buffer, &io->Information, length,
683 de[1].d_name, de[0].d_name, mask );
685 info = append_entry( buffer, &io->Information, length,
686 de[0].d_name, NULL, mask );
690 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
692 io->u.Status = STATUS_BUFFER_OVERFLOW;
693 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
697 old_pos = lseek( fd, 0, SEEK_CUR );
698 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
701 else /* we'll only return full entries, no need to worry about overflow */
703 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
704 if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
708 if (!de[0].d_reclen) break;
710 info = append_entry( buffer, &io->Information, length,
711 de[1].d_name, de[0].d_name, mask );
713 info = append_entry( buffer, &io->Information, length,
714 de[0].d_name, NULL, mask );
718 if (single_entry) break;
719 /* check if we still have enough space for the largest possible entry */
720 if (io->Information + max_dir_info_size > length) break;
722 res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
726 if (last_info) last_info->NextEntryOffset = 0;
727 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
730 #endif /* VFAT_IOCTL_READDIR_BOTH */
733 /***********************************************************************
734 * read_directory_getdents
736 * Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
739 static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
740 BOOLEAN single_entry, const UNICODE_STRING *mask,
741 BOOLEAN restart_scan )
744 size_t size = length;
746 char local_buffer[8192];
747 KERNEL_DIRENT64 *data, *de;
748 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
749 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
751 if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
753 size = sizeof(local_buffer);
754 data = (KERNEL_DIRENT64 *)local_buffer;
757 if (restart_scan) lseek( fd, 0, SEEK_SET );
758 else if (length < max_dir_info_size) /* we may have to return a partial entry here */
760 old_pos = lseek( fd, 0, SEEK_CUR );
761 if (old_pos == -1 && errno == ENOENT)
763 io->u.Status = STATUS_NO_MORE_FILES;
769 io->u.Status = STATUS_SUCCESS;
771 res = getdents64( fd, data, size );
776 io->u.Status = FILE_GetNtStatus();
787 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
791 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
793 io->u.Status = STATUS_BUFFER_OVERFLOW;
794 lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
797 /* check if we still have enough space for the largest possible entry */
798 if (single_entry || io->Information + max_dir_info_size > length)
800 if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
805 /* move on to the next entry */
806 if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
809 res = getdents64( fd, data, size );
814 if (last_info) last_info->NextEntryOffset = 0;
815 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
818 if ((char *)data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
821 #endif /* USE_GETDENTS */
824 /***********************************************************************
825 * read_directory_readdir
827 * Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
829 static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
830 BOOLEAN single_entry, const UNICODE_STRING *mask,
831 BOOLEAN restart_scan )
834 off_t i, old_pos = 0;
836 FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
837 static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
839 if (!(dir = opendir( "." )))
841 io->u.Status = FILE_GetNtStatus();
847 old_pos = lseek( fd, 0, SEEK_CUR );
848 /* skip the right number of entries */
849 for (i = 0; i < old_pos; i++)
854 io->u.Status = STATUS_NO_MORE_FILES;
859 io->u.Status = STATUS_SUCCESS;
861 while ((de = readdir( dir )))
864 info = append_entry( buffer, &io->Information, length, de->d_name, NULL, mask );
868 if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
870 io->u.Status = STATUS_BUFFER_OVERFLOW;
871 old_pos--; /* restore pos to previous entry */
874 if (single_entry) break;
875 /* check if we still have enough space for the largest possible entry */
876 if (io->Information + max_dir_info_size > length) break;
880 lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
883 if (last_info) last_info->NextEntryOffset = 0;
884 else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
888 /******************************************************************************
889 * NtQueryDirectoryFile [NTDLL.@]
890 * ZwQueryDirectoryFile [NTDLL.@]
892 NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
893 PIO_APC_ROUTINE apc_routine, PVOID apc_context,
895 PVOID buffer, ULONG length,
896 FILE_INFORMATION_CLASS info_class,
897 BOOLEAN single_entry,
898 PUNICODE_STRING mask,
899 BOOLEAN restart_scan )
903 TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
904 handle, event, apc_routine, apc_context, io, buffer,
905 length, info_class, single_entry, debugstr_us(mask),
908 if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
910 if (event || apc_routine)
912 FIXME( "Unsupported yet option\n" );
913 return io->u.Status = STATUS_NOT_IMPLEMENTED;
915 if (info_class != FileBothDirectoryInformation)
917 FIXME( "Unsupported file info class %d\n", info_class );
918 return io->u.Status = STATUS_NOT_IMPLEMENTED;
921 if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL )) != STATUS_SUCCESS)
926 RtlEnterCriticalSection( &dir_section );
928 if (show_dir_symlinks == -1) init_options();
930 if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
932 #ifdef VFAT_IOCTL_READDIR_BOTH
933 if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
936 if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
938 read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
940 if (fchdir( cwd ) == -1) chdir( "/" );
942 else io->u.Status = FILE_GetNtStatus();
944 RtlLeaveCriticalSection( &dir_section );
946 wine_server_release_fd( handle, fd );
947 if (cwd != -1) close( cwd );
948 TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information );
953 /***********************************************************************
956 * Find a file in a directory the hard way, by doing a case-insensitive search.
957 * The file found is appended to unix_name at pos.
958 * There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
960 static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
963 WCHAR buffer[MAX_DIR_ENTRY_LEN];
969 int ret, used_default, is_name_8_dot_3;
971 /* try a shortcut for this directory */
973 unix_name[pos++] = '/';
974 ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
975 NULL, &used_default );
976 /* if we used the default char, the Unix name won't round trip properly back to Unicode */
977 /* so it cannot match the file we are looking for */
978 if (ret >= 0 && !used_default)
980 unix_name[pos + ret] = 0;
981 if (!stat( unix_name, &st )) return STATUS_SUCCESS;
983 if (check_case) goto not_found; /* we want an exact match */
985 if (pos > 1) unix_name[pos - 1] = 0;
986 else unix_name[1] = 0; /* keep the initial slash */
988 /* check if it fits in 8.3 so that we don't look for short names if we won't need them */
990 str.Buffer = (WCHAR *)name;
991 str.Length = length * sizeof(WCHAR);
992 str.MaximumLength = str.Length;
993 is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
995 /* now look for it through the directory */
997 #ifdef VFAT_IOCTL_READDIR_BOTH
1000 int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
1003 KERNEL_DIRENT de[2];
1005 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
1007 unix_name[pos - 1] = '/';
1010 if (!de[0].d_reclen) break;
1012 if (de[1].d_name[0])
1014 ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
1015 buffer, MAX_DIR_ENTRY_LEN );
1016 if (ret == length && !memicmpW( buffer, name, length))
1018 strcpy( unix_name + pos, de[1].d_name );
1020 return STATUS_SUCCESS;
1023 ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
1024 buffer, MAX_DIR_ENTRY_LEN );
1025 if (ret == length && !memicmpW( buffer, name, length))
1027 strcpy( unix_name + pos,
1028 de[1].d_name[0] ? de[1].d_name : de[0].d_name );
1030 return STATUS_SUCCESS;
1032 if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
1041 /* fall through to normal handling */
1043 #endif /* VFAT_IOCTL_READDIR_BOTH */
1045 if (!(dir = opendir( unix_name )))
1047 if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
1048 else return FILE_GetNtStatus();
1050 unix_name[pos - 1] = '/';
1051 str.Buffer = buffer;
1052 str.MaximumLength = sizeof(buffer);
1053 while ((de = readdir( dir )))
1055 ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
1056 if (ret == length && !memicmpW( buffer, name, length ))
1058 strcpy( unix_name + pos, de->d_name );
1060 return STATUS_SUCCESS;
1063 if (!is_name_8_dot_3) continue;
1065 str.Length = ret * sizeof(WCHAR);
1066 if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
1068 WCHAR short_nameW[12];
1069 ret = hash_short_file_name( &str, short_nameW );
1070 if (ret == length && !memicmpW( short_nameW, name, length ))
1072 strcpy( unix_name + pos, de->d_name );
1074 return STATUS_SUCCESS;
1079 goto not_found; /* avoid warning */
1082 unix_name[pos - 1] = 0;
1083 return STATUS_OBJECT_PATH_NOT_FOUND;
1087 /******************************************************************************
1090 * Get the Unix path of a DOS device.
1092 static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
1094 const char *config_dir = wine_get_config_dir();
1096 char *unix_name, *new_name, *dev;
1100 /* make sure the device name is ASCII */
1101 for (i = 0; i < name_len; i++)
1102 if (name[i] <= 32 || name[i] >= 127) return STATUS_OBJECT_NAME_NOT_FOUND;
1104 unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
1106 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1107 return STATUS_NO_MEMORY;
1109 strcpy( unix_name, config_dir );
1110 strcat( unix_name, "/dosdevices/" );
1111 dev = unix_name + strlen(unix_name);
1113 for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
1116 /* special case for drive devices */
1117 if (name_len == 2 && dev[1] == ':')
1125 if (!stat( unix_name, &st ))
1127 TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
1128 unix_name_ret->Buffer = unix_name;
1129 unix_name_ret->Length = strlen(unix_name);
1130 unix_name_ret->MaximumLength = unix_len;
1131 return STATUS_SUCCESS;
1135 /* now try some defaults for it */
1136 if (!strcmp( dev, "aux" ))
1138 strcpy( dev, "com1" );
1141 if (!strcmp( dev, "prn" ))
1143 strcpy( dev, "lpt1" );
1146 if (!strcmp( dev, "nul" ))
1148 strcpy( unix_name, "/dev/null" );
1149 dev = NULL; /* last try */
1154 if (dev[1] == ':' && dev[2] == ':') /* drive device */
1156 dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
1157 new_name = get_default_drive_device( unix_name );
1159 else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
1160 else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
1162 if (!new_name) break;
1164 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1165 unix_name = new_name;
1166 unix_len = strlen(unix_name) + 1;
1167 dev = NULL; /* last try */
1169 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1170 return STATUS_OBJECT_NAME_NOT_FOUND;
1174 /* return the length of the DOS namespace prefix if any */
1175 static inline int get_dos_prefix_len( const UNICODE_STRING *name )
1177 static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
1178 static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
1180 if (name->Length > sizeof(nt_prefixW) &&
1181 !memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
1182 return sizeof(nt_prefixW) / sizeof(WCHAR);
1184 if (name->Length > sizeof(dosdev_prefixW) &&
1185 !memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
1186 return sizeof(dosdev_prefixW) / sizeof(WCHAR);
1192 /******************************************************************************
1193 * wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
1195 * Convert a file name from NT namespace to Unix namespace.
1197 * If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
1198 * element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
1199 * returned, but the unix name is still filled in properly.
1201 NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
1202 UINT disposition, BOOLEAN check_case )
1204 static const WCHAR uncW[] = {'U','N','C','\\'};
1205 static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
1207 NTSTATUS status = STATUS_SUCCESS;
1208 const char *config_dir = wine_get_config_dir();
1209 const WCHAR *name, *p;
1212 int pos, ret, name_len, unix_len, used_default;
1214 name = nameW->Buffer;
1215 name_len = nameW->Length / sizeof(WCHAR);
1217 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
1219 if ((pos = get_dos_prefix_len( nameW )))
1221 BOOLEAN is_unc = FALSE;
1226 /* check for UNC prefix */
1227 if (name_len > 4 && !memicmpW( name, uncW, 4 ))
1235 /* check for a drive letter with path */
1236 if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
1238 /* not a drive with path, try other DOS devices */
1239 return get_dos_device( name, name_len, unix_name_ret );
1241 name += 2; /* skip drive letter */
1245 /* check for invalid characters */
1246 for (p = name; p < name + name_len; p++)
1247 if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
1249 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1250 unix_len += MAX_DIR_ENTRY_LEN + 3;
1251 unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
1252 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1253 return STATUS_NO_MEMORY;
1254 strcpy( unix_name, config_dir );
1255 strcat( unix_name, "/dosdevices/" );
1256 pos = strlen(unix_name);
1259 strcpy( unix_name + pos, "unc" );
1264 unix_name[pos++] = tolowerW( name[-2] );
1265 unix_name[pos++] = ':';
1269 else /* no DOS prefix, assume NT native name, map directly to Unix */
1271 if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
1272 unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
1273 unix_len += MAX_DIR_ENTRY_LEN + 3;
1274 if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
1275 return STATUS_NO_MEMORY;
1279 /* try a shortcut first */
1281 ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
1282 NULL, &used_default );
1284 while (name_len && IS_SEPARATOR(*name))
1290 if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
1293 unix_name[pos + ret] = 0;
1294 for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
1295 if (!stat( unix_name, &st ))
1297 /* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
1298 if (disposition == FILE_CREATE)
1299 return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
1304 if (!name_len) /* empty name -> drive root doesn't exist */
1306 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1307 return STATUS_OBJECT_PATH_NOT_FOUND;
1309 if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
1311 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1312 return STATUS_OBJECT_NAME_NOT_FOUND;
1315 /* now do it component by component */
1319 const WCHAR *end, *next;
1322 while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
1324 while (next < name + name_len && IS_SEPARATOR(*next)) next++;
1325 name_len -= next - name;
1327 /* grow the buffer if needed */
1329 if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
1332 unix_len += 2 * MAX_DIR_ENTRY_LEN;
1333 if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
1335 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1336 return STATUS_NO_MEMORY;
1338 unix_name = new_name;
1341 status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
1343 /* if this is the last element, not finding it is not necessarily fatal */
1346 if (status == STATUS_OBJECT_PATH_NOT_FOUND)
1348 status = STATUS_OBJECT_NAME_NOT_FOUND;
1349 if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
1351 ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
1352 MAX_DIR_ENTRY_LEN, NULL, &used_default );
1353 if (ret > 0 && !used_default)
1355 unix_name[pos] = '/';
1356 unix_name[pos + 1 + ret] = 0;
1357 status = STATUS_NO_SUCH_FILE;
1362 else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
1364 status = STATUS_OBJECT_NAME_COLLISION;
1368 if (status != STATUS_SUCCESS)
1370 /* couldn't find it at all, fail */
1371 WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
1372 RtlFreeHeap( GetProcessHeap(), 0, unix_name );
1376 pos += strlen( unix_name + pos );
1380 WARN( "%s -> %s required a case-insensitive search\n",
1381 debugstr_us(nameW), debugstr_a(unix_name) );
1384 TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
1385 unix_name_ret->Buffer = unix_name;
1386 unix_name_ret->Length = strlen(unix_name);
1387 unix_name_ret->MaximumLength = unix_len;
1392 /******************************************************************
1393 * RtlDoesFileExists_U (NTDLL.@)
1395 BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
1397 UNICODE_STRING nt_name;
1398 ANSI_STRING unix_name;
1401 if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
1402 ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
1403 if (ret) RtlFreeAnsiString( &unix_name );
1404 RtlFreeUnicodeString( &nt_name );