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wine/files/dos_fs.c
Alexandre Julliard 1de20ae4af Rewrote handling of COM and LPT devices to use symlinks in 
$WINEPREFIX/dosdevices, with suitable defaults if the symlinks are
missing.
Rewrote QueryDosDevice and DefineDosDevice to use the new scheme.
Added temporary code to create the symlinks based on the contents of
the config file.
2004-03-20 02:28:51 +00:00

956 lines
27 KiB
C
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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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