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goma/wine/16779f1e5e797f492e0ca07058c48a17202202dd/./dlls/ntdll/directory.c
blob: df7cc74061ab0da69af5b2d616a8c3a20065fb98 [file]
/*
* NTDLL directory functions
*
* Copyright 1993 Erik Bos
* Copyright 2003 Eric Pouech
* Copyright 1996, 2004 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#ifdef HAVE_MNTENT_H
#include <mntent.h>
#endif
#include <sys/stat.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_LINUX_IOCTL_H
#include <linux/ioctl.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#include <time.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "winreg.h"
#include "ntstatus.h"
#include "winternl.h"
#include "ntdll_misc.h"
#include "wine/unicode.h"
#include "wine/server.h"
#include "wine/library.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(file);
/* just in case... */
#undef VFAT_IOCTL_READDIR_BOTH
#undef USE_GETDENTS
#ifdef linux
/* We want the real kernel dirent structure, not the libc one */
typedef struct
{
long d_ino;
long d_off;
unsigned short d_reclen;
char d_name[256];
} KERNEL_DIRENT;
/* Define the VFAT ioctl to get both short and long file names */
#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
#ifndef O_DIRECTORY
# define O_DIRECTORY 0200000 /* must be directory */
#endif
#ifdef __i386__
typedef struct
{
ULONG64 d_ino;
LONG64 d_off;
unsigned short d_reclen;
unsigned char d_type;
char d_name[256];
} KERNEL_DIRENT64;
static inline int getdents64( int fd, KERNEL_DIRENT64 *de, unsigned int size )
{
int ret;
__asm__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
: "=a" (ret)
: "0" (220 /*NR_getdents64*/), "r" (fd), "c" (de), "d" (size)
: "memory" );
if (ret < 0)
{
errno = -ret;
ret = -1;
}
return ret;
}
#define USE_GETDENTS
#endif /* i386 */
#endif /* linux */
#define IS_OPTION_TRUE(ch) ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) == '1')
#define IS_SEPARATOR(ch) ((ch) == '\\' || (ch) == '/')
#define INVALID_NT_CHARS '*','?','<','>','|','"'
#define INVALID_DOS_CHARS INVALID_NT_CHARS,'+','=',',',';','[',']',' ','\345'
#define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
static int show_dir_symlinks = -1;
static int show_dot_files;
/* at some point we may want to allow Winelib apps to set this */
static const int is_case_sensitive = FALSE;
static CRITICAL_SECTION dir_section;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &dir_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { 0, (DWORD)(__FILE__ ": dir_section") }
};
static CRITICAL_SECTION dir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
/* check if a given Unicode char is OK in a DOS short name */
static inline BOOL is_invalid_dos_char( WCHAR ch )
{
static const WCHAR invalid_chars[] = { INVALID_DOS_CHARS,'~','.',0 };
if (ch > 0x7f) return TRUE;
return strchrW( invalid_chars, ch ) != NULL;
}
/***********************************************************************
* get_default_com_device
*
* Return the default device to use for serial ports.
*/
static char *get_default_com_device( int num )
{
char *ret = NULL;
if (!num || num > 9) return ret;
#ifdef linux
ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/ttyS0") );
if (ret)
{
strcpy( ret, "/dev/ttyS0" );
ret[strlen(ret) - 1] = '0' + num - 1;
}
#else
FIXME( "no known default for device com%d\n", num );
#endif
return ret;
}
/***********************************************************************
* get_default_lpt_device
*
* Return the default device to use for parallel ports.
*/
static char *get_default_lpt_device( int num )
{
char *ret = NULL;
if (!num || num > 9) return ret;
#ifdef linux
ret = RtlAllocateHeap( GetProcessHeap(), 0, sizeof("/dev/lp0") );
if (ret)
{
strcpy( ret, "/dev/lp0" );
ret[strlen(ret) - 1] = '0' + num - 1;
}
#else
FIXME( "no known default for device lpt%d\n", num );
#endif
return ret;
}
/***********************************************************************
* parse_mount_entries
*
* Parse mount entries looking for a given device. Helper for get_default_drive_device.
*/
#ifdef linux
static char *parse_mount_entries( FILE *f, dev_t dev, ino_t ino )
{
struct mntent *entry;
struct stat st;
char *device;
while ((entry = getmntent( f )))
{
/* don't even bother stat'ing network mounts, there's no meaningful device anyway */
if (!strcmp( entry->mnt_type, "nfs" ) ||
!strcmp( entry->mnt_type, "smbfs" ) ||
!strcmp( entry->mnt_type, "ncpfs" )) continue;
if (stat( entry->mnt_dir, &st ) == -1) continue;
if (st.st_dev != dev || st.st_ino != ino) continue;
if (!strcmp( entry->mnt_type, "supermount" ))
{
if ((device = strstr( entry->mnt_opts, "dev=" )))
{
char *p = strchr( device + 4, ',' );
if (p) *p = 0;
return device + 4;
}
}
else
return entry->mnt_fsname;
}
return NULL;
}
#endif
/***********************************************************************
* get_default_drive_device
*
* Return the default device to use for a given drive mount point.
*/
static char *get_default_drive_device( const char *root )
{
char *ret = NULL;
#ifdef linux
FILE *f;
char *device = NULL;
int fd, res = -1;
struct stat st;
/* try to open it first to force it to get mounted */
if ((fd = open( root, O_RDONLY | O_DIRECTORY )) != -1)
{
res = fstat( fd, &st );
close( fd );
}
/* now try normal stat just in case */
if (res == -1) res = stat( root, &st );
if (res == -1) return NULL;
RtlEnterCriticalSection( &dir_section );
if ((f = fopen( "/etc/mtab", "r" )))
{
device = parse_mount_entries( f, st.st_dev, st.st_ino );
endmntent( f );
}
/* look through fstab too in case it's not mounted (for instance if it's an audio CD) */
if (!device && (f = fopen( "/etc/fstab", "r" )))
{
device = parse_mount_entries( f, st.st_dev, st.st_ino );
endmntent( f );
}
if (device)
{
ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(device) + 1 );
if (ret) strcpy( ret, device );
}
RtlLeaveCriticalSection( &dir_section );
#elif defined(__APPLE__)
struct statfs *mntStat;
struct stat st;
int i;
int mntSize;
dev_t dev;
ino_t ino;
static const char path_bsd_device[] = "/dev/disk";
int res;
res = stat( root, &st );
if (res == -1) return NULL;
dev = st.st_dev;
ino = st.st_ino;
RtlEnterCriticalSection( &dir_section );
mntSize = getmntinfo(&mntStat, MNT_NOWAIT);
for (i = 0; i < mntSize && !ret; i++)
{
if (stat(mntStat[i].f_mntonname, &st ) == -1) continue;
if (st.st_dev != dev || st.st_ino != ino) continue;
/* FIXME add support for mounted network drive */
if ( strncmp(mntStat[i].f_mntfromname, path_bsd_device, strlen(path_bsd_device)) == 0)
{
/* set return value to the corresponding raw BSD node */
ret = RtlAllocateHeap( GetProcessHeap(), 0, strlen(mntStat[i].f_mntfromname) + 2 /* 2 : r and \0 */ );
if (ret)
{
strcpy(ret, "/dev/r");
strcat(ret, mntStat[i].f_mntfromname+sizeof("/dev/")-1);
}
}
}
RtlLeaveCriticalSection( &dir_section );
#else
static int warned;
if (!warned++) FIXME( "auto detection of DOS devices not supported on this platform\n" );
#endif
return ret;
}
/***********************************************************************
* init_options
*
* Initialize the show_dir_symlinks and show_dot_files options.
*/
static void init_options(void)
{
static const WCHAR WineW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','W','i','n','e','\\',
'C','o','n','f','i','g','\\','W','i','n','e',0};
static const WCHAR ShowDotFilesW[] = {'S','h','o','w','D','o','t','F','i','l','e','s',0};
static const WCHAR ShowDirSymlinksW[] = {'S','h','o','w','D','i','r','S','y','m','l','i','n','k','s',0};
char tmp[80];
HKEY hkey;
DWORD dummy;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
show_dot_files = show_dir_symlinks = 0;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, WineW );
if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
{
RtlInitUnicodeString( &nameW, ShowDotFilesW );
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
{
WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
show_dot_files = IS_OPTION_TRUE( str[0] );
}
RtlInitUnicodeString( &nameW, ShowDirSymlinksW );
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
{
WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
show_dir_symlinks = IS_OPTION_TRUE( str[0] );
}
NtClose( hkey );
}
}
/***********************************************************************
* DIR_is_hidden_file
*
* Check if the specified file should be hidden based on its name and the show dot files option.
*/
BOOL DIR_is_hidden_file( const UNICODE_STRING *name )
{
WCHAR *p, *end;
if (show_dir_symlinks == -1) init_options();
if (show_dot_files) return FALSE;
end = p = name->Buffer + name->Length/sizeof(WCHAR);
while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
if (p == end || *p != '.') return FALSE;
/* make sure it isn't '.' or '..' */
if (p + 1 == end) return FALSE;
if (p[1] == '.' && p + 2 == end) return FALSE;
return TRUE;
}
/***********************************************************************
* hash_short_file_name
*
* Transform a Unix file name into a hashed DOS name. If the name is a valid
* DOS name, it is converted to upper-case; otherwise it is replaced by a
* hashed version that fits in 8.3 format.
* 'buffer' must be at least 12 characters long.
* Returns length of short name in bytes; short name is NOT null-terminated.
*/
static ULONG hash_short_file_name( const UNICODE_STRING *name, LPWSTR buffer )
{
static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
LPCWSTR p, ext, end = name->Buffer + name->Length / sizeof(WCHAR);
LPWSTR dst;
unsigned short hash;
int i;
/* Compute the hash code of the file name */
/* If you know something about hash functions, feel free to */
/* insert a better algorithm here... */
if (!is_case_sensitive)
{
for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p) ^ (tolowerW(p[1]) << 8);
hash = (hash<<3) ^ (hash>>5) ^ tolowerW(*p); /* Last character */
}
else
{
for (p = name->Buffer, hash = 0xbeef; p < end - 1; p++)
hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
hash = (hash << 3) ^ (hash >> 5) ^ *p; /* Last character */
}
/* Find last dot for start of the extension */
for (p = name->Buffer + 1, ext = NULL; p < end - 1; p++) if (*p == '.') ext = p;
/* Copy first 4 chars, replacing invalid chars with '_' */
for (i = 4, p = name->Buffer, dst = buffer; i > 0; i--, p++)
{
if (p == end || p == ext) break;
*dst++ = is_invalid_dos_char(*p) ? '_' : toupperW(*p);
}
/* Pad to 5 chars with '~' */
while (i-- >= 0) *dst++ = '~';
/* Insert hash code converted to 3 ASCII chars */
*dst++ = hash_chars[(hash >> 10) & 0x1f];
*dst++ = hash_chars[(hash >> 5) & 0x1f];
*dst++ = hash_chars[hash & 0x1f];
/* Copy the first 3 chars of the extension (if any) */
if (ext)
{
*dst++ = '.';
for (i = 3, ext++; (i > 0) && ext < end; i--, ext++)
*dst++ = is_invalid_dos_char(*ext) ? '_' : toupperW(*ext);
}
return dst - buffer;
}
/***********************************************************************
* match_filename
*
* Check a long file name against a mask.
*
* Tests (done in W95 DOS shell - case insensitive):
* *.txt test1.test.txt *
* *st1* test1.txt *
* *.t??????.t* test1.ta.tornado.txt *
* *tornado* test1.ta.tornado.txt *
* t*t test1.ta.tornado.txt *
* ?est* test1.txt *
* ?est??? test1.txt -
* *test1.txt* test1.txt *
* h?l?o*t.dat hellothisisatest.dat *
*/
static BOOLEAN match_filename( const UNICODE_STRING *name_str, const UNICODE_STRING *mask_str )
{
int mismatch;
const WCHAR *name = name_str->Buffer;
const WCHAR *mask = mask_str->Buffer;
const WCHAR *name_end = name + name_str->Length / sizeof(WCHAR);
const WCHAR *mask_end = mask + mask_str->Length / sizeof(WCHAR);
const WCHAR *lastjoker = NULL;
const WCHAR *next_to_retry = NULL;
TRACE("(%s, %s)\n", debugstr_us(name_str), debugstr_us(mask_str));
while (name < name_end && mask < mask_end)
{
switch(*mask)
{
case '*':
mask++;
while (mask < mask_end && *mask == '*') mask++; /* Skip consecutive '*' */
if (mask == mask_end) return TRUE; /* end of mask is all '*', so match */
lastjoker = mask;
/* skip to the next match after the joker(s) */
if (is_case_sensitive)
while (name < name_end && (*name != *mask)) name++;
else
while (name < name_end && (toupperW(*name) != toupperW(*mask))) name++;
next_to_retry = name;
break;
case '?':
mask++;
name++;
break;
default:
if (is_case_sensitive) mismatch = (*mask != *name);
else mismatch = (toupperW(*mask) != toupperW(*name));
if (!mismatch)
{
mask++;
name++;
if (mask == mask_end)
{
if (name == name_end) return TRUE;
if (lastjoker) mask = lastjoker;
}
}
else /* mismatch ! */
{
if (lastjoker) /* we had an '*', so we can try unlimitedly */
{
mask = lastjoker;
/* this scan sequence was a mismatch, so restart
* 1 char after the first char we checked last time */
next_to_retry++;
name = next_to_retry;
}
else return FALSE; /* bad luck */
}
break;
}
}
while (mask < mask_end && ((*mask == '.') || (*mask == '*')))
mask++; /* Ignore trailing '.' or '*' in mask */
return (name == name_end && mask == mask_end);
}
/***********************************************************************
* append_entry
*
* helper for NtQueryDirectoryFile
*/
static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG *pos, ULONG max_length,
const char *long_name, const char *short_name,
const UNICODE_STRING *mask )
{
FILE_BOTH_DIR_INFORMATION *info;
int i, long_len, short_len, total_len;
struct stat st;
WCHAR long_nameW[MAX_DIR_ENTRY_LEN];
WCHAR short_nameW[12];
UNICODE_STRING str;
long_len = ntdll_umbstowcs( 0, long_name, strlen(long_name), long_nameW, MAX_DIR_ENTRY_LEN );
if (long_len == -1) return NULL;
str.Buffer = long_nameW;
str.Length = long_len * sizeof(WCHAR);
str.MaximumLength = sizeof(long_nameW);
if (short_name)
{
short_len = ntdll_umbstowcs( 0, short_name, strlen(short_name),
short_nameW, sizeof(short_nameW) / sizeof(WCHAR) );
if (short_len == -1) short_len = sizeof(short_nameW) / sizeof(WCHAR);
}
else /* generate a short name if necessary */
{
BOOLEAN spaces;
short_len = 0;
if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
short_len = hash_short_file_name( &str, short_nameW );
}
TRACE( "long %s short %s mask %s\n",
debugstr_us(&str), debugstr_wn(short_nameW, short_len), debugstr_us(mask) );
if (mask && !match_filename( &str, mask ))
{
if (!short_len) return NULL; /* no short name to match */
str.Buffer = short_nameW;
str.Length = short_len * sizeof(WCHAR);
str.MaximumLength = sizeof(short_nameW);
if (!match_filename( &str, mask )) return NULL;
}
total_len = (sizeof(*info) - sizeof(info->FileName) + long_len*sizeof(WCHAR) + 3) & ~3;
info = (FILE_BOTH_DIR_INFORMATION *)((char *)info_ptr + *pos);
if (*pos + total_len > max_length) total_len = max_length - *pos;
if (lstat( long_name, &st ) == -1) return NULL;
if (S_ISLNK( st.st_mode ))
{
if (stat( long_name, &st ) == -1) return NULL;
if (S_ISDIR( st.st_mode ) && !show_dir_symlinks) return NULL;
}
info->NextEntryOffset = total_len;
info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */
RtlSecondsSince1970ToTime( st.st_mtime, &info->CreationTime );
RtlSecondsSince1970ToTime( st.st_mtime, &info->LastWriteTime );
RtlSecondsSince1970ToTime( st.st_atime, &info->LastAccessTime );
RtlSecondsSince1970ToTime( st.st_ctime, &info->ChangeTime );
if (S_ISDIR(st.st_mode))
{
info->EndOfFile.QuadPart = info->AllocationSize.QuadPart = 0;
info->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
}
else
{
info->EndOfFile.QuadPart = st.st_size;
info->AllocationSize.QuadPart = (ULONGLONG)st.st_blocks * 512;
info->FileAttributes = FILE_ATTRIBUTE_ARCHIVE;
}
if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
info->FileAttributes |= FILE_ATTRIBUTE_READONLY;
if (!show_dot_files && long_name[0] == '.' && long_name[1] && (long_name[1] != '.' || long_name[2]))
info->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
info->EaSize = 0; /* FIXME */
info->ShortNameLength = short_len * sizeof(WCHAR);
for (i = 0; i < short_len; i++) info->ShortName[i] = toupperW(short_nameW[i]);
info->FileNameLength = long_len * sizeof(WCHAR);
memcpy( info->FileName, long_nameW,
min( info->FileNameLength, total_len-sizeof(*info)+sizeof(info->FileName) ));
*pos += total_len;
return info;
}
/***********************************************************************
* read_directory_vfat
*
* Read a directory using the VFAT ioctl; helper for NtQueryDirectoryFile.
*/
#ifdef VFAT_IOCTL_READDIR_BOTH
static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
BOOLEAN single_entry, const UNICODE_STRING *mask,
BOOLEAN restart_scan )
{
int res;
KERNEL_DIRENT de[2];
FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
io->u.Status = STATUS_SUCCESS;
if (restart_scan) lseek( fd, 0, SEEK_SET );
if (length < max_dir_info_size) /* we may have to return a partial entry here */
{
off_t old_pos = lseek( fd, 0, SEEK_CUR );
res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
while (res != -1)
{
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 ((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 );
res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
}
}
else /* we'll only return full entries, no need to worry about overflow */
{
res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
while (res != -1)
{
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;
}
res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
}
}
if (last_info) last_info->NextEntryOffset = 0;
else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
return 0;
}
#endif /* VFAT_IOCTL_READDIR_BOTH */
/***********************************************************************
* read_directory_getdents
*
* Read a directory using the Linux getdents64 system call; helper for NtQueryDirectoryFile.
*/
#ifdef USE_GETDENTS
static int read_directory_getdents( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
BOOLEAN single_entry, const UNICODE_STRING *mask,
BOOLEAN restart_scan )
{
off_t old_pos = 0;
size_t size = length;
int res;
char local_buffer[8192];
KERNEL_DIRENT64 *data, *de;
FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
if (size <= sizeof(local_buffer) || !(data = RtlAllocateHeap( GetProcessHeap(), 0, size )))
{
size = sizeof(local_buffer);
data = (KERNEL_DIRENT64 *)local_buffer;
}
if (restart_scan) lseek( fd, 0, SEEK_SET );
else if (length < max_dir_info_size) /* we may have to return a partial entry here */
{
old_pos = lseek( fd, 0, SEEK_CUR );
if (old_pos == -1 && errno == ENOENT)
{
io->u.Status = STATUS_NO_MORE_FILES;
res = 0;
goto done;
}
}
io->u.Status = STATUS_SUCCESS;
res = getdents64( fd, data, size );
if (res == -1)
{
if (errno != ENOSYS)
{
io->u.Status = FILE_GetNtStatus();
res = 0;
}
goto done;
}
de = data;
while (res > 0)
{
res -= de->d_reclen;
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;
lseek( fd, old_pos, SEEK_SET ); /* restore pos to previous entry */
break;
}
/* check if we still have enough space for the largest possible entry */
if (single_entry || io->Information + max_dir_info_size > length)
{
if (res > 0) lseek( fd, de->d_off, SEEK_SET ); /* set pos to next entry */
break;
}
}
old_pos = de->d_off;
/* move on to the next entry */
if (res > 0) de = (KERNEL_DIRENT64 *)((char *)de + de->d_reclen);
else
{
res = getdents64( fd, data, size );
de = data;
}
}
if (last_info) last_info->NextEntryOffset = 0;
else io->u.Status = restart_scan ? STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
res = 0;
done:
if ((char *)data != local_buffer) RtlFreeHeap( GetProcessHeap(), 0, data );
return res;
}
#endif /* USE_GETDENTS */
/***********************************************************************
* read_directory_readdir
*
* Read a directory using the POSIX readdir interface; helper for NtQueryDirectoryFile.
*/
static void read_directory_readdir( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG length,
BOOLEAN single_entry, const UNICODE_STRING *mask,
BOOLEAN restart_scan )
{
DIR *dir;
off_t i, old_pos = 0;
struct dirent *de;
FILE_BOTH_DIR_INFORMATION *info, *last_info = NULL;
static const unsigned int max_dir_info_size = sizeof(*info) + (MAX_DIR_ENTRY_LEN-1) * sizeof(WCHAR);
if (!(dir = opendir( "." )))
{
io->u.Status = FILE_GetNtStatus();
return;
}
if (!restart_scan)
{
old_pos = lseek( fd, 0, SEEK_CUR );
/* skip the right number of entries */
for (i = 0; i < old_pos; i++)
{
if (!readdir( dir ))
{
closedir( dir );
io->u.Status = STATUS_NO_MORE_FILES;
return;
}
}
}
io->u.Status = STATUS_SUCCESS;
while ((de = readdir( dir )))
{
old_pos++;
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;
old_pos--; /* restore pos to previous entry */
break;
}
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;
}
}
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;
}
/******************************************************************************
* NtQueryDirectoryFile [NTDLL.@]
* ZwQueryDirectoryFile [NTDLL.@]
*/
NTSTATUS WINAPI NtQueryDirectoryFile( HANDLE handle, HANDLE event,
PIO_APC_ROUTINE apc_routine, PVOID apc_context,
PIO_STATUS_BLOCK io,
PVOID buffer, ULONG length,
FILE_INFORMATION_CLASS info_class,
BOOLEAN single_entry,
PUNICODE_STRING mask,
BOOLEAN restart_scan )
{
int cwd, fd;
TRACE("(%p %p %p %p %p %p 0x%08lx 0x%08x 0x%08x %s 0x%08x\n",
handle, event, apc_routine, apc_context, io, buffer,
length, info_class, single_entry, debugstr_us(mask),
restart_scan);
if (length < sizeof(FILE_BOTH_DIR_INFORMATION)) return STATUS_INFO_LENGTH_MISMATCH;
if (event || apc_routine)
{
FIXME( "Unsupported yet option\n" );
return io->u.Status = STATUS_NOT_IMPLEMENTED;
}
if (info_class != FileBothDirectoryInformation)
{
FIXME( "Unsupported file info class %d\n", info_class );
return io->u.Status = STATUS_NOT_IMPLEMENTED;
}
if ((io->u.Status = wine_server_handle_to_fd( handle, GENERIC_READ, &fd, NULL )) != STATUS_SUCCESS)
return io->u.Status;
io->Information = 0;
RtlEnterCriticalSection( &dir_section );
if (show_dir_symlinks == -1) init_options();
if ((cwd = open(".", O_RDONLY)) != -1 && fchdir( fd ) != -1)
{
#ifdef VFAT_IOCTL_READDIR_BOTH
if ((read_directory_vfat( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
#endif
#ifdef USE_GETDENTS
if ((read_directory_getdents( fd, io, buffer, length, single_entry, mask, restart_scan )) == -1)
#endif
read_directory_readdir( fd, io, buffer, length, single_entry, mask, restart_scan );
if (fchdir( cwd ) == -1) chdir( "/" );
}
else io->u.Status = FILE_GetNtStatus();
RtlLeaveCriticalSection( &dir_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;
}
/***********************************************************************
* find_file_in_dir
*
* Find a file in a directory the hard way, by doing a case-insensitive search.
* The file found is appended to unix_name at pos.
* There must be at least MAX_DIR_ENTRY_LEN+2 chars available at pos.
*/
static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, int length,
int check_case )
{
WCHAR buffer[MAX_DIR_ENTRY_LEN];
UNICODE_STRING str;
BOOLEAN spaces;
DIR *dir;
struct dirent *de;
struct stat st;
int ret, used_default, is_name_8_dot_3;
/* try a shortcut for this directory */
unix_name[pos++] = '/';
ret = ntdll_wcstoumbs( 0, name, length, unix_name + pos, MAX_DIR_ENTRY_LEN,
NULL, &used_default );
/* if we used the default char, the Unix name won't round trip properly back to Unicode */
/* so it cannot match the file we are looking for */
if (ret >= 0 && !used_default)
{
unix_name[pos + ret] = 0;
if (!stat( unix_name, &st )) return STATUS_SUCCESS;
}
if (check_case) goto not_found; /* we want an exact match */
if (pos > 1) unix_name[pos - 1] = 0;
else unix_name[1] = 0; /* keep the initial slash */
/* check if it fits in 8.3 so that we don't look for short names if we won't need them */
str.Buffer = (WCHAR *)name;
str.Length = length * sizeof(WCHAR);
str.MaximumLength = str.Length;
is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
/* now look for it through the directory */
#ifdef VFAT_IOCTL_READDIR_BOTH
if (is_name_8_dot_3)
{
int fd = open( unix_name, O_RDONLY | O_DIRECTORY );
if (fd != -1)
{
KERNEL_DIRENT de[2];
if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
{
unix_name[pos - 1] = '/';
for (;;)
{
if (!de[0].d_reclen) break;
if (de[1].d_name[0])
{
ret = ntdll_umbstowcs( 0, de[1].d_name, strlen(de[1].d_name),
buffer, MAX_DIR_ENTRY_LEN );
if (ret == length && !memicmpW( buffer, name, length))
{
strcpy( unix_name + pos, de[1].d_name );
close( fd );
return STATUS_SUCCESS;
}
}
ret = ntdll_umbstowcs( 0, de[0].d_name, strlen(de[0].d_name),
buffer, MAX_DIR_ENTRY_LEN );
if (ret == length && !memicmpW( buffer, name, length))
{
strcpy( unix_name + pos,
de[1].d_name[0] ? de[1].d_name : de[0].d_name );
close( fd );
return STATUS_SUCCESS;
}
if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) == -1)
{
close( fd );
goto not_found;
}
}
}
close( fd );
}
/* fall through to normal handling */
}
#endif /* VFAT_IOCTL_READDIR_BOTH */
if (!(dir = opendir( unix_name )))
{
if (errno == ENOENT) return STATUS_OBJECT_PATH_NOT_FOUND;
else return FILE_GetNtStatus();
}
unix_name[pos - 1] = '/';
str.Buffer = buffer;
str.MaximumLength = sizeof(buffer);
while ((de = readdir( dir )))
{
ret = ntdll_umbstowcs( 0, de->d_name, strlen(de->d_name), buffer, MAX_DIR_ENTRY_LEN );
if (ret == length && !memicmpW( buffer, name, length ))
{
strcpy( unix_name + pos, de->d_name );
closedir( dir );
return STATUS_SUCCESS;
}
if (!is_name_8_dot_3) continue;
str.Length = ret * sizeof(WCHAR);
if (!RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) || spaces)
{
WCHAR short_nameW[12];
ret = hash_short_file_name( &str, short_nameW );
if (ret == length && !memicmpW( short_nameW, name, length ))
{
strcpy( unix_name + pos, de->d_name );
closedir( dir );
return STATUS_SUCCESS;
}
}
}
closedir( dir );
goto not_found; /* avoid warning */
not_found:
unix_name[pos - 1] = 0;
return STATUS_OBJECT_PATH_NOT_FOUND;
}
/******************************************************************************
* get_dos_device
*
* Get the Unix path of a DOS device.
*/
static NTSTATUS get_dos_device( const WCHAR *name, UINT name_len, ANSI_STRING *unix_name_ret )
{
const char *config_dir = wine_get_config_dir();
struct stat st;
char *unix_name, *new_name, *dev;
unsigned int i;
int unix_len;
/* make sure the device name is ASCII */
for (i = 0; i < name_len; i++)
if (name[i] <= 32 || name[i] >= 127) return STATUS_OBJECT_NAME_NOT_FOUND;
unix_len = strlen(config_dir) + sizeof("/dosdevices/") + name_len + 1;
if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
return STATUS_NO_MEMORY;
strcpy( unix_name, config_dir );
strcat( unix_name, "/dosdevices/" );
dev = unix_name + strlen(unix_name);
for (i = 0; i < name_len; i++) dev[i] = (char)tolowerW(name[i]);
dev[i] = 0;
/* special case for drive devices */
if (name_len == 2 && dev[1] == ':')
{
dev[i++] = ':';
dev[i] = 0;
}
for (;;)
{
if (!stat( unix_name, &st ))
{
TRACE( "%s -> %s\n", debugstr_wn(name,name_len), debugstr_a(unix_name) );
unix_name_ret->Buffer = unix_name;
unix_name_ret->Length = strlen(unix_name);
unix_name_ret->MaximumLength = unix_len;
return STATUS_SUCCESS;
}
if (!dev) break;
/* now try some defaults for it */
if (!strcmp( dev, "aux" ))
{
strcpy( dev, "com1" );
continue;
}
if (!strcmp( dev, "prn" ))
{
strcpy( dev, "lpt1" );
continue;
}
if (!strcmp( dev, "nul" ))
{
strcpy( unix_name, "/dev/null" );
dev = NULL; /* last try */
continue;
}
new_name = NULL;
if (dev[1] == ':' && dev[2] == ':') /* drive device */
{
dev[2] = 0; /* remove last ':' to get the drive mount point symlink */
new_name = get_default_drive_device( unix_name );
}
else if (!strncmp( dev, "com", 3 )) new_name = get_default_com_device( dev[3] - '0' );
else if (!strncmp( dev, "lpt", 3 )) new_name = get_default_lpt_device( dev[3] - '0' );
if (!new_name) break;
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
unix_name = new_name;
unix_len = strlen(unix_name) + 1;
dev = NULL; /* last try */
}
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
return STATUS_OBJECT_NAME_NOT_FOUND;
}
/* return the length of the DOS namespace prefix if any */
static inline int get_dos_prefix_len( const UNICODE_STRING *name )
{
static const WCHAR nt_prefixW[] = {'\\','?','?','\\'};
static const WCHAR dosdev_prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
if (name->Length > sizeof(nt_prefixW) &&
!memcmp( name->Buffer, nt_prefixW, sizeof(nt_prefixW) ))
return sizeof(nt_prefixW) / sizeof(WCHAR);
if (name->Length > sizeof(dosdev_prefixW) &&
!memicmpW( name->Buffer, dosdev_prefixW, sizeof(dosdev_prefixW)/sizeof(WCHAR) ))
return sizeof(dosdev_prefixW) / sizeof(WCHAR);
return 0;
}
/******************************************************************************
* wine_nt_to_unix_file_name (NTDLL.@) Not a Windows API
*
* Convert a file name from NT namespace to Unix namespace.
*
* If disposition is not FILE_OPEN or FILE_OVERWRITTE, the last path
* element doesn't have to exist; in that case STATUS_NO_SUCH_FILE is
* returned, but the unix name is still filled in properly.
*/
NTSTATUS wine_nt_to_unix_file_name( const UNICODE_STRING *nameW, ANSI_STRING *unix_name_ret,
UINT disposition, BOOLEAN check_case )
{
static const WCHAR uncW[] = {'U','N','C','\\'};
static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
NTSTATUS status = STATUS_SUCCESS;
const char *config_dir = wine_get_config_dir();
const WCHAR *name, *p;
struct stat st;
char *unix_name;
int pos, ret, name_len, unix_len, used_default;
name = nameW->Buffer;
name_len = nameW->Length / sizeof(WCHAR);
if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
if ((pos = get_dos_prefix_len( nameW )))
{
BOOLEAN is_unc = FALSE;
name += pos;
name_len -= pos;
/* check for UNC prefix */
if (name_len > 4 && !memicmpW( name, uncW, 4 ))
{
name += 3;
name_len -= 3;
is_unc = TRUE;
}
else
{
/* check for a drive letter with path */
if (name_len < 3 || !isalphaW(name[0]) || name[1] != ':' || !IS_SEPARATOR(name[2]))
{
/* not a drive with path, try other DOS devices */
return get_dos_device( name, name_len, unix_name_ret );
}
name += 2; /* skip drive letter */
name_len -= 2;
}
/* check for invalid characters */
for (p = name; p < name + name_len; p++)
if (*p < 32 || strchrW( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
unix_len += MAX_DIR_ENTRY_LEN + 3;
unix_len += strlen(config_dir) + sizeof("/dosdevices/") + 3;
if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
return STATUS_NO_MEMORY;
strcpy( unix_name, config_dir );
strcat( unix_name, "/dosdevices/" );
pos = strlen(unix_name);
if (is_unc)
{
strcpy( unix_name + pos, "unc" );
pos += 3;
}
else
{
unix_name[pos++] = tolowerW( name[-2] );
unix_name[pos++] = ':';
unix_name[pos] = 0;
}
}
else /* no DOS prefix, assume NT native name, map directly to Unix */
{
if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_NAME_INVALID;
unix_len = ntdll_wcstoumbs( 0, name, name_len, NULL, 0, NULL, NULL );
unix_len += MAX_DIR_ENTRY_LEN + 3;
if (!(unix_name = RtlAllocateHeap( GetProcessHeap(), 0, unix_len )))
return STATUS_NO_MEMORY;
pos = 0;
}
/* try a shortcut first */
ret = ntdll_wcstoumbs( 0, name, name_len, unix_name + pos, unix_len - pos - 1,
NULL, &used_default );
while (name_len && IS_SEPARATOR(*name))
{
name++;
name_len--;
}
if (ret > 0 && !used_default) /* if we used the default char the name didn't convert properly */
{
char *p;
unix_name[pos + ret] = 0;
for (p = unix_name + pos ; *p; p++) if (*p == '\\') *p = '/';
if (!stat( unix_name, &st ))
{
/* creation fails with STATUS_ACCESS_DENIED for the root of the drive */
if (disposition == FILE_CREATE)
return name_len ? STATUS_OBJECT_NAME_COLLISION : STATUS_ACCESS_DENIED;
goto done;
}
}
if (!name_len) /* empty name -> drive root doesn't exist */
{
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
return STATUS_OBJECT_PATH_NOT_FOUND;
}
if (check_case && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
{
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
return STATUS_OBJECT_NAME_NOT_FOUND;
}
/* now do it component by component */
while (name_len)
{
const WCHAR *end, *next;
end = name;
while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
next = end;
while (next < name + name_len && IS_SEPARATOR(*next)) next++;
name_len -= next - name;
/* grow the buffer if needed */
if (unix_len - pos < MAX_DIR_ENTRY_LEN + 2)
{
char *new_name;
unix_len += 2 * MAX_DIR_ENTRY_LEN;
if (!(new_name = RtlReAllocateHeap( GetProcessHeap(), 0, unix_name, unix_len )))
{
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
return STATUS_NO_MEMORY;
}
unix_name = new_name;
}
status = find_file_in_dir( unix_name, pos, name, end - name, check_case );
/* if this is the last element, not finding it is not necessarily fatal */
if (!name_len)
{
if (status == STATUS_OBJECT_PATH_NOT_FOUND)
{
status = STATUS_OBJECT_NAME_NOT_FOUND;
if (disposition != FILE_OPEN && disposition != FILE_OVERWRITE)
{
ret = ntdll_wcstoumbs( 0, name, end - name, unix_name + pos + 1,
MAX_DIR_ENTRY_LEN, NULL, &used_default );
if (ret > 0 && !used_default)
{
unix_name[pos] = '/';
unix_name[pos + 1 + ret] = 0;
status = STATUS_NO_SUCH_FILE;
break;
}
}
}
else if (status == STATUS_SUCCESS && disposition == FILE_CREATE)
{
status = STATUS_OBJECT_NAME_COLLISION;
}
}
if (status != STATUS_SUCCESS)
{
/* couldn't find it at all, fail */
WARN( "%s not found in %s\n", debugstr_w(name), unix_name );
RtlFreeHeap( GetProcessHeap(), 0, unix_name );
return status;
}
pos += strlen( unix_name + pos );
name = next;
}
WARN( "%s -> %s required a case-insensitive search\n",
debugstr_us(nameW), debugstr_a(unix_name) );
done:
TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
unix_name_ret->Buffer = unix_name;
unix_name_ret->Length = strlen(unix_name);
unix_name_ret->MaximumLength = unix_len;
return status;
}
/******************************************************************
* RtlDoesFileExists_U (NTDLL.@)
*/
BOOLEAN WINAPI RtlDoesFileExists_U(LPCWSTR file_name)
{
UNICODE_STRING nt_name;
ANSI_STRING unix_name;
BOOLEAN ret;
if (!RtlDosPathNameToNtPathName_U( file_name, &nt_name, NULL, NULL )) return FALSE;
ret = (wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE ) == STATUS_SUCCESS);
if (ret) RtlFreeAnsiString( &unix_name );
RtlFreeUnicodeString( &nt_name );
return ret;
}