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/*
* DOS file system functions
*
* Copyright 1993 Erik Bos
* Copyright 1996 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 <ctype.h>
#include <dirent.h>
#include <errno.h>
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#endif
#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_LINUX_IOCTL_H
#include <linux/ioctl.h>
#endif
#include <time.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "ntstatus.h"
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wingdi.h"
#include "wine/unicode.h"
#include "wine/winbase16.h"
#include "file.h"
#include "winreg.h"
#include "winternl.h"
#include "wine/server.h"
#include "wine/exception.h"
#include "excpt.h"
#include "smb.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dosfs);
WINE_DECLARE_DEBUG_CHANNEL(file);
/* Define the VFAT ioctl to get both short and long file names */
/* FIXME: is it possible to get this to work on other systems? */
#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 VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
/* To avoid blocking on non-directories in DOSFS_OpenDir_VFAT*/
#ifndef O_DIRECTORY
# define O_DIRECTORY 0200000 /* must be directory */
#endif
#else /* linux */
#undef VFAT_IOCTL_READDIR_BOTH /* just in case... */
#endif /* linux */
/* Chars we don't want to see in DOS file names */
#define INVALID_DOS_CHARS "*?<>|\"+=,;[] \345"
/* at some point we may want to allow Winelib apps to set this */
static const BOOL is_case_sensitive = FALSE;
/*
* Directory info for DOSFS_ReadDir
* contains the names of *all* the files in the directory
*/
typedef struct
{
int used;
int size;
WCHAR names[1];
} DOS_DIR;
/* return non-zero if c is the end of a directory name */
static inline int is_end_of_name(WCHAR c)
{
return !c || (c == '/') || (c == '\\');
}
/***********************************************************************
* DOSFS_ValidDOSName
*
* Return 1 if Unix file 'name' is also a valid MS-DOS name
* (i.e. contains only valid DOS chars, lower-case only, fits in 8.3 format).
* File name can be terminated by '\0', '\\' or '/'.
*/
static int DOSFS_ValidDOSName( LPCWSTR name )
{
static const char invalid_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" INVALID_DOS_CHARS;
const WCHAR *p = name;
const char *invalid = !is_case_sensitive ? (invalid_chars + 26) : invalid_chars;
int len = 0;
if (*p == '.')
{
/* Check for "." and ".." */
p++;
if (*p == '.') p++;
/* All other names beginning with '.' are invalid */
return (is_end_of_name(*p));
}
while (!is_end_of_name(*p))
{
if (*p < 256 && strchr( invalid, (char)*p )) return 0; /* Invalid char */
if (*p == '.') break; /* Start of the extension */
if (++len > 8) return 0; /* Name too long */
p++;
}
if (*p != '.') return 1; /* End of name */
p++;
if (is_end_of_name(*p)) return 0; /* Empty extension not allowed */
len = 0;
while (!is_end_of_name(*p))
{
if (*p < 256 && strchr( invalid, (char)*p )) return 0; /* Invalid char */
if (*p == '.') return 0; /* Second extension not allowed */
if (++len > 3) return 0; /* Extension too long */
p++;
}
return 1;
}
/***********************************************************************
* DOSFS_ToDosFCBFormat
*
* Convert a file name to DOS FCB format (8+3 chars, padded with blanks),
* expanding wild cards and converting to upper-case in the process.
* File name can be terminated by '\0', '\\' or '/'.
* Return FALSE if the name is not a valid DOS name.
* 'buffer' must be at least 12 characters long.
*/
static BOOL DOSFS_ToDosFCBFormat( LPCWSTR name, LPWSTR buffer )
{
static const char invalid_chars[] = INVALID_DOS_CHARS;
LPCWSTR p = name;
int i;
/* Check for "." and ".." */
if (*p == '.')
{
p++;
buffer[0] = '.';
for(i = 1; i < 11; i++) buffer[i] = ' ';
buffer[11] = 0;
if (*p == '.')
{
buffer[1] = '.';
p++;
}
return (!*p || (*p == '/') || (*p == '\\'));
}
for (i = 0; i < 8; i++)
{
switch(*p)
{
case '\0':
case '\\':
case '/':
case '.':
buffer[i] = ' ';
break;
case '?':
p++;
/* fall through */
case '*':
buffer[i] = '?';
break;
default:
if (*p < 256 && strchr( invalid_chars, (char)*p )) return FALSE;
buffer[i] = toupperW(*p);
p++;
break;
}
}
if (*p == '*')
{
/* Skip all chars after wildcard up to first dot */
while (*p && (*p != '/') && (*p != '\\') && (*p != '.')) p++;
}
else
{
/* Check if name too long */
if (*p && (*p != '/') && (*p != '\\') && (*p != '.')) return FALSE;
}
if (*p == '.') p++; /* Skip dot */
for (i = 8; i < 11; i++)
{
switch(*p)
{
case '\0':
case '\\':
case '/':
buffer[i] = ' ';
break;
case '.':
return FALSE; /* Second extension not allowed */
case '?':
p++;
/* fall through */
case '*':
buffer[i] = '?';
break;
default:
if (*p < 256 && strchr( invalid_chars, (char)*p )) return FALSE;
buffer[i] = toupperW(*p);
p++;
break;
}
}
buffer[11] = '\0';
/* at most 3 character of the extension are processed
* is something behind this ?
*/
while (*p == '*' || *p == ' ') p++; /* skip wildcards and spaces */
return is_end_of_name(*p);
}
/***********************************************************************
* DOSFS_ToDosDTAFormat
*
* Convert a file name from FCB to DTA format (name.ext, null-terminated)
* converting to upper-case in the process.
* File name can be terminated by '\0', '\\' or '/'.
* 'buffer' must be at least 13 characters long.
*/
static void DOSFS_ToDosDTAFormat( LPCWSTR name, LPWSTR buffer )
{
LPWSTR p;
memcpy( buffer, name, 8 * sizeof(WCHAR) );
p = buffer + 8;
while ((p > buffer) && (p[-1] == ' ')) p--;
*p++ = '.';
memcpy( p, name + 8, 3 * sizeof(WCHAR) );
p += 3;
while (p[-1] == ' ') p--;
if (p[-1] == '.') p--;
*p = '\0';
}
/***********************************************************************
* DOSFS_AddDirEntry
*
* Used to construct an array of filenames in DOSFS_OpenDir
*/
static BOOL DOSFS_AddDirEntry(DOS_DIR **dir, LPCWSTR name, LPCWSTR dosname)
{
int extra1 = strlenW(name) + 1;
int extra2 = strlenW(dosname) + 1;
/* if we need more, at minimum double the size */
if( (extra1 + extra2 + (*dir)->used) > (*dir)->size)
{
int more = (*dir)->size;
DOS_DIR *t;
if(more<(extra1+extra2))
more = extra1+extra2;
t = HeapReAlloc(GetProcessHeap(), 0, *dir, sizeof(**dir) +
((*dir)->size + more)*sizeof(WCHAR) );
if(!t)
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
ERR("Out of memory caching directory structure %d %d %d\n",
(*dir)->size, more, (*dir)->used);
return FALSE;
}
(*dir) = t;
(*dir)->size += more;
}
/* at this point, the dir structure is big enough to hold these names */
strcpyW(&(*dir)->names[(*dir)->used], name);
(*dir)->used += extra1;
strcpyW(&(*dir)->names[(*dir)->used], dosname);
(*dir)->used += extra2;
return TRUE;
}
/***********************************************************************
* DOSFS_OpenDir_VFAT
*/
static BOOL DOSFS_OpenDir_VFAT(DOS_DIR **dir, const char *unix_path)
{
#ifdef VFAT_IOCTL_READDIR_BOTH
KERNEL_DIRENT de[2];
int fd = open( unix_path, O_RDONLY|O_DIRECTORY );
BOOL r = TRUE;
/* Check if the VFAT ioctl is supported on this directory */
if ( fd<0 )
return FALSE;
while (1)
{
WCHAR long_name[MAX_PATH];
WCHAR short_name[12];
r = (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1);
if(!r)
break;
if (!de[0].d_reclen)
break;
MultiByteToWideChar(CP_UNIXCP, 0, de[0].d_name, -1, long_name, MAX_PATH);
if (!DOSFS_ToDosFCBFormat( long_name, short_name ))
short_name[0] = '\0';
if (de[1].d_name[0])
MultiByteToWideChar(CP_UNIXCP, 0, de[1].d_name, -1, long_name, MAX_PATH);
else
MultiByteToWideChar(CP_UNIXCP, 0, de[0].d_name, -1, long_name, MAX_PATH);
r = DOSFS_AddDirEntry(dir, long_name, short_name );
if(!r)
break;
}
if(r)
{
static const WCHAR empty_strW[] = { 0 };
DOSFS_AddDirEntry(dir, empty_strW, empty_strW);
}
close(fd);
return r;
#else
return FALSE;
#endif /* VFAT_IOCTL_READDIR_BOTH */
}
/***********************************************************************
* DOSFS_OpenDir_Normal
*
* Now use the standard opendir/readdir interface
*/
static BOOL DOSFS_OpenDir_Normal( DOS_DIR **dir, const char *unix_path )
{
DIR *unixdir = opendir( unix_path );
BOOL r = TRUE;
static const WCHAR empty_strW[] = { 0 };
if(!unixdir)
return FALSE;
while(1)
{
WCHAR long_name[MAX_PATH];
struct dirent *de = readdir(unixdir);
if(!de)
break;
MultiByteToWideChar(CP_UNIXCP, 0, de->d_name, -1, long_name, MAX_PATH);
r = DOSFS_AddDirEntry(dir, long_name, empty_strW);
if(!r)
break;
}
if(r)
DOSFS_AddDirEntry(dir, empty_strW, empty_strW);
closedir(unixdir);
return r;
}
/***********************************************************************
* DOSFS_OpenDir
*/
static DOS_DIR *DOSFS_OpenDir( const char *unix_path )
{
const int init_size = 0x100;
DOS_DIR *dir = HeapAlloc( GetProcessHeap(), 0, sizeof(*dir) + init_size*sizeof (WCHAR));
BOOL r;
TRACE("%s\n",debugstr_a(unix_path));
if (!dir)
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
dir->used = 0;
dir->size = init_size;
/* Treat empty path as root directory. This simplifies path split into
directory and mask in several other places */
if (!*unix_path) unix_path = "/";
r = DOSFS_OpenDir_VFAT( &dir, unix_path);
if(!r)
r = DOSFS_OpenDir_Normal( &dir, unix_path);
if(!r)
{
HeapFree(GetProcessHeap(), 0, dir);
return NULL;
}
dir->used = 0;
return dir;
}
/***********************************************************************
* DOSFS_CloseDir
*/
static void DOSFS_CloseDir( DOS_DIR *dir )
{
HeapFree( GetProcessHeap(), 0, dir );
}
/***********************************************************************
* DOSFS_ReadDir
*/
static BOOL DOSFS_ReadDir( DOS_DIR *dir, LPCWSTR *long_name,
LPCWSTR *short_name )
{
LPCWSTR sn, ln;
if (!dir)
return FALSE;
/* the long pathname is first */
ln = &dir->names[dir->used];
if(ln[0])
*long_name = ln;
else
return FALSE;
dir->used += (strlenW(ln) + 1);
/* followed by the short path name */
sn = &dir->names[dir->used];
if(sn[0])
*short_name = sn;
else
*short_name = NULL;
dir->used += (strlenW(sn) + 1);
return TRUE;
}
/***********************************************************************
* DOSFS_Hash
*
* 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.
* File name can be terminated by '\0', '\\' or '/'.
* 'buffer' must be at least 13 characters long.
*/
static void DOSFS_Hash( LPCWSTR name, LPWSTR buffer, BOOL dir_format )
{
static const char invalid_chars[] = INVALID_DOS_CHARS "~.";
static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
LPCWSTR p, ext;
LPWSTR dst;
unsigned short hash;
int i;
if (dir_format)
{
for(i = 0; i < 11; i++) buffer[i] = ' ';
buffer[11] = 0;
}
if (DOSFS_ValidDOSName( name ))
{
/* Check for '.' and '..' */
if (*name == '.')
{
buffer[0] = '.';
if (!dir_format) buffer[1] = buffer[2] = '\0';
if (name[1] == '.') buffer[1] = '.';
return;
}
/* Simply copy the name, converting to uppercase */
for (dst = buffer; !is_end_of_name(*name) && (*name != '.'); name++)
*dst++ = toupperW(*name);
if (*name == '.')
{
if (dir_format) dst = buffer + 8;
else *dst++ = '.';
for (name++; !is_end_of_name(*name); name++)
*dst++ = toupperW(*name);
}
if (!dir_format) *dst = '\0';
return;
}
/* 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, hash = 0xbeef; !is_end_of_name(p[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, hash = 0xbeef; !is_end_of_name(p[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+1, ext = NULL; !is_end_of_name(*p); p++)
if (*p == '.') ext = p;
if (ext && is_end_of_name(ext[1]))
ext = NULL; /* Empty extension ignored */
/* Copy first 4 chars, replacing invalid chars with '_' */
for (i = 4, p = name, dst = buffer; i > 0; i--, p++)
{
if (is_end_of_name(*p) || (p == ext)) break;
*dst++ = (*p < 256 && strchr( invalid_chars, (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)
{
if (!dir_format) *dst++ = '.';
for (i = 3, ext++; (i > 0) && !is_end_of_name(*ext); i--, ext++)
*dst++ = (*ext < 256 && strchr( invalid_chars, (char)*ext )) ? '_' : toupperW(*ext);
}
if (!dir_format) *dst = '\0';
}
/***********************************************************************
* DOSFS_FindUnixName
*
* Find the Unix file name in a given directory that corresponds to
* a file name (either in Unix or DOS format).
* File name can be terminated by '\0', '\\' or '/'.
* Return TRUE if OK, FALSE if no file name matches.
*
* 'long_buf' must be at least 'long_len' characters long. If the long name
* turns out to be larger than that, the function returns FALSE.
* 'short_buf' must be at least 13 characters long.
*/
BOOL DOSFS_FindUnixName( const DOS_FULL_NAME *path, LPCWSTR name, char *long_buf,
INT long_len, LPWSTR short_buf )
{
DOS_DIR *dir;
LPCWSTR long_name, short_name;
WCHAR dos_name[12], tmp_buf[13];
BOOL ret;
LPCWSTR p = strchrW( name, '/' );
int len = p ? (int)(p - name) : strlenW(name);
if ((p = strchrW( name, '\\' ))) len = min( (int)(p - name), len );
/* Ignore trailing dots and spaces */
while (len > 1 && (name[len-1] == '.' || name[len-1] == ' ')) len--;
if (long_len < len + 1) return FALSE;
TRACE("%s,%s\n", path->long_name, debugstr_w(name) );
if (!DOSFS_ToDosFCBFormat( name, dos_name )) dos_name[0] = '\0';
if (!(dir = DOSFS_OpenDir( path->long_name )))
{
WARN("(%s,%s): can't open dir: %s\n",
path->long_name, debugstr_w(name), strerror(errno) );
return FALSE;
}
while ((ret = DOSFS_ReadDir( dir, &long_name, &short_name )))
{
/* Check against Unix name */
if (len == strlenW(long_name))
{
if (is_case_sensitive)
{
if (!strncmpW( long_name, name, len )) break;
}
else
{
if (!strncmpiW( long_name, name, len )) break;
}
}
if (dos_name[0])
{
/* Check against hashed DOS name */
if (!short_name)
{
DOSFS_Hash( long_name, tmp_buf, TRUE );
short_name = tmp_buf;
}
if (!strcmpW( dos_name, short_name )) break;
}
}
if (ret)
{
if (long_buf) WideCharToMultiByte(CP_UNIXCP, 0, long_name, -1, long_buf, long_len, NULL, NULL);
if (short_buf)
{
if (short_name)
DOSFS_ToDosDTAFormat( short_name, short_buf );
else
DOSFS_Hash( long_name, short_buf, FALSE );
}
TRACE("(%s,%s) -> %s (%s)\n", path->long_name, debugstr_w(name),
debugstr_w(long_name), short_buf ? debugstr_w(short_buf) : "***");
}
else
WARN("%s not found in '%s'\n", debugstr_w(name), path->long_name);
DOSFS_CloseDir( dir );
return ret;
}
/***********************************************************************
* DOSFS_GetPathDrive
*
* Get the drive specified by a given path name (DOS or Unix format).
*/
static int DOSFS_GetPathDrive( LPCWSTR *name )
{
int drive;
LPCWSTR p = *name;
if (*p && (p[1] == ':'))
{
drive = toupperW(*p) - 'A';
*name += 2;
}
else if (*p == '/') /* Absolute Unix path? */
{
if ((drive = DRIVE_FindDriveRootW( name )) == -1)
{
MESSAGE("Warning: %s not accessible from a configured DOS drive\n", debugstr_w(*name) );
/* Assume it really was a DOS name */
drive = DRIVE_GetCurrentDrive();
}
}
else drive = DRIVE_GetCurrentDrive();
if (!DRIVE_IsValid(drive))
{
SetLastError( ERROR_INVALID_DRIVE );
return -1;
}
return drive;
}
/***********************************************************************
* DOSFS_GetFullName
*
* Convert a file name (DOS or mixed DOS/Unix format) to a valid
* Unix name / short DOS name pair.
* Return FALSE if one of the path components does not exist. The last path
* component is only checked if 'check_last' is non-zero.
* The buffers pointed to by 'long_buf' and 'short_buf' must be
* at least MAX_PATHNAME_LEN long.
*/
BOOL DOSFS_GetFullName( LPCWSTR name, BOOL check_last, DOS_FULL_NAME *full )
{
BOOL found;
char *p_l, *root;
LPWSTR p_s;
static const WCHAR driveA_rootW[] = {'A',':','\\',0};
static const WCHAR dos_rootW[] = {'\\',0};
TRACE("%s (last=%d)\n", debugstr_w(name), check_last );
if ((!*name) || (*name=='\n'))
{ /* error code for Win98 */
SetLastError(ERROR_BAD_PATHNAME);
return FALSE;
}
if ((full->drive = DOSFS_GetPathDrive( &name )) == -1) return FALSE;
lstrcpynA( full->long_name, DRIVE_GetRoot( full->drive ),
sizeof(full->long_name) );
if (full->long_name[1]) root = full->long_name + strlen(full->long_name);
else root = full->long_name; /* root directory */
strcpyW( full->short_name, driveA_rootW );
full->short_name[0] += full->drive;
if ((*name == '\\') || (*name == '/')) /* Absolute path */
{
while ((*name == '\\') || (*name == '/')) name++;
}
else /* Relative path */
{
lstrcpynA( root + 1, DRIVE_GetUnixCwd( full->drive ),
sizeof(full->long_name) - (root - full->long_name) - 1 );
if (root[1]) *root = '/';
lstrcpynW( full->short_name + 3, DRIVE_GetDosCwd( full->drive ),
sizeof(full->short_name)/sizeof(full->short_name[0]) - 3 );
}
p_l = full->long_name[1] ? full->long_name + strlen(full->long_name)
: full->long_name;
p_s = full->short_name[3] ? full->short_name + strlenW(full->short_name)
: full->short_name + 2;
found = TRUE;
while (*name && found)
{
/* Check for '.' and '..' */
if (*name == '.')
{
if (is_end_of_name(name[1]))
{
name++;
while ((*name == '\\') || (*name == '/')) name++;
continue;
}
else if ((name[1] == '.') && is_end_of_name(name[2]))
{
name += 2;
while ((*name == '\\') || (*name == '/')) name++;
while ((p_l > root) && (*p_l != '/')) p_l--;
while ((p_s > full->short_name + 2) && (*p_s != '\\')) p_s--;
*p_l = *p_s = '\0'; /* Remove trailing separator */
continue;
}
}
/* Make sure buffers are large enough */
if ((p_s >= full->short_name + sizeof(full->short_name)/sizeof(full->short_name[0]) - 14) ||
(p_l >= full->long_name + sizeof(full->long_name) - 1))
{
SetLastError( ERROR_PATH_NOT_FOUND );
return FALSE;
}
/* Get the long and short name matching the file name */
if ((found = DOSFS_FindUnixName( full, name, p_l + 1,
sizeof(full->long_name) - (p_l - full->long_name) - 1, p_s + 1 )))
{
*p_l++ = '/';
p_l += strlen(p_l);
*p_s++ = '\\';
p_s += strlenW(p_s);
while (!is_end_of_name(*name)) name++;
}
else if (!check_last)
{
*p_l++ = '/';
*p_s++ = '\\';
while (!is_end_of_name(*name) &&
(p_s < full->short_name + sizeof(full->short_name)/sizeof(full->short_name[0]) - 1) &&
(p_l < full->long_name + sizeof(full->long_name) - 1))
{
WCHAR wch;
*p_s++ = tolowerW(*name);
/* If the drive is case-sensitive we want to create new */
/* files in lower-case otherwise we can't reopen them */
/* under the same short name. */
if (is_case_sensitive) wch = tolowerW(*name);
else wch = *name;
p_l += WideCharToMultiByte(CP_UNIXCP, 0, &wch, 1, p_l, 2, NULL, NULL);
name++;
}
/* Ignore trailing dots and spaces */
while(p_l[-1] == '.' || p_l[-1] == ' ') {
--p_l;
--p_s;
}
*p_l = '\0';
*p_s = '\0';
}
while ((*name == '\\') || (*name == '/')) name++;
}
if (!found)
{
if (check_last)
{
SetLastError( ERROR_FILE_NOT_FOUND );
return FALSE;
}
if (*name) /* Not last */
{
SetLastError( ERROR_PATH_NOT_FOUND );
return FALSE;
}
}
if (!full->long_name[0]) strcpy( full->long_name, "/" );
if (!full->short_name[2]) strcpyW( full->short_name + 2, dos_rootW );
TRACE("returning %s = %s\n", full->long_name, debugstr_w(full->short_name) );
return TRUE;
}
/***********************************************************************
* wine_get_unix_file_name (KERNEL32.@) Not a Windows API
*
* Return the full Unix file name for a given path.
*/
BOOL WINAPI wine_get_unix_file_name( LPCWSTR dosW, LPSTR buffer, DWORD len )
{
BOOL ret;
DOS_FULL_NAME path;
ret = DOSFS_GetFullName( dosW, FALSE, &path );
if (ret && len)
{
strncpy( buffer, path.long_name, len );
buffer[len - 1] = 0; /* ensure 0 termination */
}
return ret;
}
/***********************************************************************
* MulDiv (KERNEL32.@)
* RETURNS
* Result of multiplication and division
* -1: Overflow occurred or Divisor was 0
*/
INT WINAPI MulDiv(
INT nMultiplicand,
INT nMultiplier,
INT nDivisor)
{
LONGLONG ret;
if (!nDivisor) return -1;
/* We want to deal with a positive divisor to simplify the logic. */
if (nDivisor < 0)
{
nMultiplicand = - nMultiplicand;
nDivisor = -nDivisor;
}
/* If the result is positive, we "add" to round. else, we subtract to round. */
if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
else
ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
if ((ret > 2147483647) || (ret < -2147483647)) return -1;
return ret;
}
/***********************************************************************
* DosDateTimeToFileTime (KERNEL32.@)
*/
BOOL WINAPI DosDateTimeToFileTime( WORD fatdate, WORD fattime, LPFILETIME ft)
{
struct tm newtm;
#ifndef HAVE_TIMEGM
struct tm *gtm;
time_t time1, time2;
#endif
newtm.tm_sec = (fattime & 0x1f) * 2;
newtm.tm_min = (fattime >> 5) & 0x3f;
newtm.tm_hour = (fattime >> 11);
newtm.tm_mday = (fatdate & 0x1f);
newtm.tm_mon = ((fatdate >> 5) & 0x0f) - 1;
newtm.tm_year = (fatdate >> 9) + 80;
#ifdef HAVE_TIMEGM
RtlSecondsSince1970ToTime( timegm(&newtm), (LARGE_INTEGER *)ft );
#else
time1 = mktime(&newtm);
gtm = gmtime(&time1);
time2 = mktime(gtm);
RtlSecondsSince1970ToTime( 2*time1-time2, (LARGE_INTEGER *)ft );
#endif
return TRUE;
}
/***********************************************************************
* FileTimeToDosDateTime (KERNEL32.@)
*/
BOOL WINAPI FileTimeToDosDateTime( const FILETIME *ft, LPWORD fatdate,
LPWORD fattime )
{
LARGE_INTEGER li;
ULONG t;
time_t unixtime;
struct tm* tm;
li.u.LowPart = ft->dwLowDateTime;
li.u.HighPart = ft->dwHighDateTime;
RtlTimeToSecondsSince1970( &li, &t );
unixtime = t;
tm = gmtime( &unixtime );
if (fattime)
*fattime = (tm->tm_hour << 11) + (tm->tm_min << 5) + (tm->tm_sec / 2);
if (fatdate)
*fatdate = ((tm->tm_year - 80) << 9) + ((tm->tm_mon + 1) << 5)
+ tm->tm_mday;
return TRUE;
}
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