580 lines
20 KiB
C
580 lines
20 KiB
C
/*
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* NTDLL directory functions
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*
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* Copyright 1993 Erik Bos
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* Copyright 2003 Eric Pouech
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* Copyright 1996, 2004 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <sys/types.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_LINUX_IOCTL_H
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#include <linux/ioctl.h>
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#endif
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#include <time.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "windef.h"
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#include "winbase.h"
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#include "winnt.h"
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#include "winreg.h"
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#include "ntstatus.h"
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#include "winternl.h"
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#include "ntdll_misc.h"
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#include "wine/unicode.h"
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#include "wine/server.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(file);
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/* Define the VFAT ioctl to get both short and long file names */
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/* FIXME: is it possible to get this to work on other systems? */
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#ifdef linux
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/* We want the real kernel dirent structure, not the libc one */
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typedef struct
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{
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long d_ino;
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long d_off;
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unsigned short d_reclen;
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char d_name[256];
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} KERNEL_DIRENT;
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#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
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/* To avoid blocking on non-directories in DOSFS_OpenDir_VFAT*/
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#ifndef O_DIRECTORY
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# define O_DIRECTORY 0200000 /* must be directory */
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#endif
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#else /* linux */
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#undef VFAT_IOCTL_READDIR_BOTH /* just in case... */
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#endif /* linux */
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#define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
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#define INVALID_DOS_CHARS '*','?','<','>','|','"','+','=',',',';','[',']',' ','\345'
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#define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
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static int show_dir_symlinks = -1;
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static int show_dot_files;
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/* at some point we may want to allow Winelib apps to set this */
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static const int is_case_sensitive = FALSE;
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static CRITICAL_SECTION chdir_section;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &chdir_section,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { 0, (DWORD)(__FILE__ ": chdir_section") }
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};
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static CRITICAL_SECTION chdir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
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/***********************************************************************
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* init_options
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*
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* Initialize the show_dir_symlinks and show_dot_files options.
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*/
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static void init_options(void)
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{
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static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
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'S','o','f','t','w','a','r','e','\\',
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'W','i','n','e','\\','W','i','n','e','\\',
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'C','o','n','f','i','g','\\','W','i','n','e',0};
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static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
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static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
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char tmp[80];
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HKEY hkey;
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DWORD dummy;
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OBJECT_ATTRIBUTES attr;
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UNICODE_STRING nameW;
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show_dot_files = show_dir_symlinks = 0;
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attr.Length = sizeof(attr);
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attr.RootDirectory = 0;
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attr.ObjectName = &nameW;
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attr.Attributes = 0;
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attr.SecurityDescriptor = NULL;
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attr.SecurityQualityOfService = NULL;
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RtlInitUnicodeString( &nameW, WineW );
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if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
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{
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RtlInitUnicodeString( &nameW, ShowDotFilesW );
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if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
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{
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WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
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show_dot_files = IS_OPTION_TRUE( str[0] );
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}
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RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
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if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
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{
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WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
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show_dir_symlinks = IS_OPTION_TRUE( str[0] );
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}
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NtClose( hkey );
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}
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}
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/***********************************************************************
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* hash_short_file_name
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*
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* Transform a Unix file name into a hashed DOS name. If the name is a valid
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* DOS name, it is converted to upper-case; otherwise it is replaced by a
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* hashed version that fits in 8.3 format.
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* 'buffer' must be at least 12 characters long.
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* Returns length of short name in bytes; short name is NOT null-terminated.
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*/
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static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
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{
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static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
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static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
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LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
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LPWSTR dst;
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unsigned short hash;
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int i;
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/* Compute the hash code of the file name */
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/* If you know something about hash functions, feel free to */
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/* insert a better algorithm here... */
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if (!is_case_sensitive)
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{
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for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
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hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
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hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
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}
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else
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{
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for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
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hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
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hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
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}
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/* Find last dot for start of the extension */
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for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
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/* Copy first 4 chars, replacing invalid chars with '_' */
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for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
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{
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if (p == end || p == ext) break;
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*dst++ = strchrW( invalid_chars, *p ) ? '_' : toupperW(*p);
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}
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/* Pad to 5 chars with '~' */
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while (i-- >= 0) *dst++ = '~';
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/* Insert hash code converted to 3 ASCII chars */
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*dst++ = hash_chars[(hash >> 10) & 0x1f];
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*dst++ = hash_chars[(hash >> 5) & 0x1f];
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*dst++ = hash_chars[hash & 0x1f];
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/* Copy the first 3 chars of the extension (if any) */
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if (ext)
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{
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*dst++ = '.';
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for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
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*dst++ = strchrW( invalid_chars, *ext ) ? '_' : toupperW(*ext);
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}
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return dst - buffer;
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}
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/***********************************************************************
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* match_filename
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*
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* Check a long file name against a mask.
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*
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* Tests (done in W95 DOS shell - case insensitive):
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* *.txt test1.test.txt *
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* *st1* test1.txt *
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* *.t??????.t* test1.ta.tornado.txt *
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* *tornado* test1.ta.tornado.txt *
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* t*t test1.ta.tornado.txt *
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* ?est* test1.txt *
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* ?est??? test1.txt -
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* *test1.txt* test1.txt *
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* h?l?o*t.dat hellothisisatest.dat *
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*/
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static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
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{
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int mismatch;
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const WCHAR *name = name_str->Buffer;
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const WCHAR *mask = mask_str->Buffer;
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const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
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const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
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const WCHAR *lastjoker = NULL;
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const WCHAR *next_to_retry = NULL;
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TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
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while (name < name_end && mask < mask_end)
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{
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switch(*mask)
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{
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case '*':
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mask++;
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while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
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if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
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lastjoker = mask;
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/* skip to the next match after the joker(s) */
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if (is_case_sensitive)
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while (name < name_end && (*name != *mask)) name++;
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else
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while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
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next_to_retry = name;
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break;
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case '?':
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mask++;
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name++;
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break;
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default:
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if (is_case_sensitive) mismatch = (*mask != *name);
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else mismatch = (toupperW(*mask) != toupperW(*name));
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if (!mismatch)
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{
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mask++;
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name++;
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if (mask == mask_end)
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{
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if (name == name_end) return TRUE;
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if (lastjoker) mask = lastjoker;
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}
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}
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else /* mismatch ! */
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{
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if (lastjoker) /* we had an '*', so we can try unlimitedly */
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{
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mask = lastjoker;
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/* this scan sequence was a mismatch, so restart
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* 1 char after the first char we checked last time */
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next_to_retry++;
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name = next_to_retry;
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}
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else return FALSE; /* bad luck */
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}
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break;
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}
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}
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while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
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mask++; /* Ignore trailing '.' or '*' in mask */
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return (name == name_end && mask == mask_end);
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}
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/***********************************************************************
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* append_entry
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*
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* helper for NtQueryDirectoryFile
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*/
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static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
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const char *long_name, const char *short_name,
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const UNICODE_STRING *mask )
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{
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FILE_BOTH_DIR_INFORMATION *info;
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int i, long_len, short_len, total_len;
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struct stat st;
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WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
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WCHAR short_nameW[12];
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UNICODE_STRING str;
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long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
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if (long_len == -1) return NULL;
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str.Buffer = long_nameW;
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str.Length = long_len * sizeof(WCHAR);
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str.MaximumLength = sizeof(long_nameW);
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if (short_name)
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{
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short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
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short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
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if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
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}
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else /* generate a short name if necessary */
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{
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BOOLEAN spaces;
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short_len = 0;
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if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
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short_len = hash_short_file_name( &str, short_nameW );
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}
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TRACE( "long %s short %s mask %s\n",
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debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
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if (mask && !match_filename( &str, mask ))
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{
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if (!short_len) return NULL; /* no short name to match */
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str.Buffer = short_nameW;
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str.Length = short_len * sizeof(WCHAR);
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str.MaximumLength = sizeof(short_nameW);
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if (!match_filename( &str, mask )) return NULL;
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}
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total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
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info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
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if (*pos + total_len > max_length) total_len = max_length - *pos;
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if (lstat( long_name, &st ) == -1) return NULL;
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if (S_ISLNK( st.st_mode ))
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{
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if (stat( long_name, &st ) == -1) return NULL;
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if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
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}
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info->NextEntryOffset = total_len;
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info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
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RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
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RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
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RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
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RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
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if (S_ISDIR(st.st_mode))
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{
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info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
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info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
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}
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else
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{
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info->EndOfFile.QuadPart = st.st_size;
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info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
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info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
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}
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if (!(st.st_mode & S_IWUSR))
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info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
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if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
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info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
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info->EaSize = 0; /* FIXME */
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info->ShortNameLength = short_len * sizeof(WCHAR);
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for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
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info->FileNameLength = long_len * sizeof(WCHAR);
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memcpy( info->FileName, long_nameW,
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min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
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*pos += total_len;
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return info;
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}
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/******************************************************************************
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* NtQueryDirectoryFile [NTDLL.@]
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* ZwQueryDirectoryFile [NTDLL.@]
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*/
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NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
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PIO_APC_ROUTINE apc_routine, PVOID apc_context,
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PIO_STATUS_BLOCK io,
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PVOID buffer, ULONG length,
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FILE_INFORMATION_CLASS info_class,
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BOOLEAN single_entry,
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PUNICODE_STRING mask,
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BOOLEAN restart_scan )
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{
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int cwd, fd;
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FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
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static const int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
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TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
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handle, event, apc_routine, apc_context, io, buffer,
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length, info_class, single_entry, debugstr_us(mask),
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restart_scan);
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if (length < sizeof(*info)) return STATUS_INFO_LENGTH_MISMATCH;
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if (event || apc_routine)
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{
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FIXME( "Unsupported yet option\n" );
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return io->u.Status = STATUS_NOT_IMPLEMENTED;
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}
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if (info_class != FileBothDirectoryInformation)
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{
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FIXME( "Unsupported file info class %d\n", info_class );
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return io->u.Status = STATUS_NOT_IMPLEMENTED;
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}
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if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ,
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&fd, NULL, NULL )) != STATUS_SUCCESS)
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return io->u.Status;
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io->Information = 0;
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RtlEnterCriticalSection( &chdir_section );
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if (show_dir_symlinks == -1) init_options();
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if ((cwd = open(".", O_RDONLY|O_DIRECTORY)) != -1 && fchdir( fd ) != -1)
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{
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off_t old_pos = 0;
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#ifdef VFAT_IOCTL_READDIR_BOTH
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KERNEL_DIRENT de[2];
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io->u.Status = STATUS_SUCCESS;
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/* Check if the VFAT ioctl is supported on this directory */
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if (restart_scan) lseek( fd, 0, SEEK_SET );
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else old_pos = lseek( fd, 0, SEEK_CUR );
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if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
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{
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if (length < max_dir_info_size) /* we may have to return a partial entry here */
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{
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for (;;)
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{
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if (!de[0].d_reclen) break;
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if (de[1].d_name[0])
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info = append_entry( buffer, &io->Information, length,
|
|
de[1].d_name, de[0].d_name, mask );
|
|
else
|
|
info = append_entry( buffer, &io->Information, length,
|
|
de[0].d_name, NULL, mask );
|
|
if (info)
|
|
{
|
|
last_info = info;
|
|
if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
|
|
{
|
|
io->u.Status = STATUS_BUFFER_OVERFLOW;
|
|
lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
|
|
}
|
|
break;
|
|
}
|
|
old_pos = lseek( fd, 0, SEEK_CUR );
|
|
if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
|
|
}
|
|
}
|
|
else /* we'll only return full entries, no need to worry about overflow */
|
|
{
|
|
for (;;)
|
|
{
|
|
if (!de[0].d_reclen) break;
|
|
if (de[1].d_name[0])
|
|
info = append_entry( buffer, &io->Information, length,
|
|
de[1].d_name, de[0].d_name, mask );
|
|
else
|
|
info = append_entry( buffer, &io->Information, length,
|
|
de[0].d_name, NULL, mask );
|
|
if (info)
|
|
{
|
|
last_info = info;
|
|
if (single_entry) break;
|
|
/* check if we still have enough space for the largest possible entry */
|
|
if (io->Information + max_dir_info_size > length) break;
|
|
}
|
|
if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1) break;
|
|
}
|
|
}
|
|
}
|
|
else if (errno != ENOENT)
|
|
#endif /* VFAT_IOCTL_READDIR_BOTH */
|
|
{
|
|
DIR *dir;
|
|
struct dirent *de;
|
|
|
|
if (!(dir = opendir( "." )))
|
|
{
|
|
io->u.Status = FILE_GetNtStatus();
|
|
goto done;
|
|
}
|
|
if (!restart_scan)
|
|
{
|
|
old_pos = lseek( fd, 0, SEEK_CUR );
|
|
seekdir( dir, old_pos );
|
|
}
|
|
io->u.Status = STATUS_SUCCESS;
|
|
|
|
if (length < max_dir_info_size) /* we may have to return a partial entry here */
|
|
{
|
|
while ((de = readdir( dir )))
|
|
{
|
|
info = append_entry( buffer, &io->Information, length,
|
|
de->d_name, NULL, mask );
|
|
if (info)
|
|
{
|
|
last_info = info;
|
|
if ((char *)info->FileName + info->FileNameLength > (char *)buffer + length)
|
|
io->u.Status = STATUS_BUFFER_OVERFLOW;
|
|
else
|
|
old_pos = telldir( dir );
|
|
break;
|
|
}
|
|
old_pos = telldir( dir );
|
|
}
|
|
}
|
|
else /* we'll only return full entries, no need to worry about overflow */
|
|
{
|
|
while ((de = readdir( dir )))
|
|
{
|
|
info = append_entry( buffer, &io->Information, length,
|
|
de->d_name, NULL, mask );
|
|
if (info)
|
|
{
|
|
last_info = info;
|
|
if (single_entry) break;
|
|
/* check if we still have enough space for the largest possible entry */
|
|
if (io->Information + max_dir_info_size > length) break;
|
|
}
|
|
}
|
|
old_pos = telldir( dir );
|
|
}
|
|
lseek( fd, old_pos, SEEK_SET ); /* store dir offset as filepos for fd */
|
|
closedir( dir );
|
|
}
|
|
|
|
if (last_info) last_info->NextEntryOffset = 0;
|
|
else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
|
|
|
|
done:
|
|
if (fchdir( cwd ) == -1) chdir( "/" );
|
|
}
|
|
else io->u.Status = FILE_GetNtStatus();
|
|
|
|
RtlLeaveCriticalSection( &chdir_section );
|
|
|
|
wine_server_release_fd( handle, fd );
|
|
if (cwd != -1) close( cwd );
|
|
TRACE( "=> %lx (%ld)\n", io->u.Status, io->Information );
|
|
return io->u.Status;
|
|
}
|