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wine/files/drive.c
Andreas Mohr fe6dfb0522 Fixed severe bug: SetCurrentDirectory32A didn't set pTask->curdir 
correctly due to current drive being set too late.
1998-10-11 17:36:06 +00:00

1083 lines
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/*
* DOS drives handling functions
*
* Copyright 1993 Erik Bos
* Copyright 1996 Alexandre Julliard
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef STATFS_DEFINED_BY_SYS_VFS
# include <sys/vfs.h>
#else
# ifdef STATFS_DEFINED_BY_SYS_MOUNT
# include <sys/mount.h>
# else
# ifdef STATFS_DEFINED_BY_SYS_STATFS
# include <sys/statfs.h>
# endif
# endif
#endif
#include "windows.h"
#include "winbase.h"
#include "drive.h"
#include "file.h"
#include "heap.h"
#include "msdos.h"
#include "options.h"
#include "task.h"
#include "debug.h"
typedef struct
{
char *root; /* root dir in Unix format without trailing / */
char *dos_cwd; /* cwd in DOS format without leading or trailing \ */
char *unix_cwd; /* cwd in Unix format without leading or trailing / */
char *device; /* raw device path */
char label[12]; /* drive label */
DWORD serial; /* drive serial number */
DRIVETYPE type; /* drive type */
UINT32 flags; /* drive flags */
dev_t dev; /* unix device number */
ino_t ino; /* unix inode number */
} DOSDRIVE;
static const char * const DRIVE_Types[] =
{
"floppy", /* TYPE_FLOPPY */
"hd", /* TYPE_HD */
"cdrom", /* TYPE_CDROM */
"network" /* TYPE_NETWORK */
};
/* Known filesystem types */
typedef struct
{
const char *name;
UINT32 flags;
} FS_DESCR;
static const FS_DESCR DRIVE_Filesystems[] =
{
{ "unix", DRIVE_CASE_SENSITIVE | DRIVE_CASE_PRESERVING },
{ "msdos", DRIVE_SHORT_NAMES },
{ "dos", DRIVE_SHORT_NAMES },
{ "fat", DRIVE_SHORT_NAMES },
{ "vfat", DRIVE_CASE_PRESERVING },
{ "win95", DRIVE_CASE_PRESERVING },
{ NULL, 0 }
};
static DOSDRIVE DOSDrives[MAX_DOS_DRIVES];
static int DRIVE_CurDrive = -1;
static HTASK16 DRIVE_LastTask = 0;
/***********************************************************************
* DRIVE_GetDriveType
*/
static DRIVETYPE DRIVE_GetDriveType( const char *name )
{
char buffer[20];
int i;
PROFILE_GetWineIniString( name, "Type", "hd", buffer, sizeof(buffer) );
for (i = 0; i < sizeof(DRIVE_Types)/sizeof(DRIVE_Types[0]); i++)
{
if (!strcasecmp( buffer, DRIVE_Types[i] )) return (DRIVETYPE)i;
}
MSG("%s: unknown type '%s', defaulting to 'hd'.\n", name, buffer );
return TYPE_HD;
}
/***********************************************************************
* DRIVE_GetFSFlags
*/
static UINT32 DRIVE_GetFSFlags( const char *name, const char *value )
{
const FS_DESCR *descr;
for (descr = DRIVE_Filesystems; descr->name; descr++)
if (!strcasecmp( value, descr->name )) return descr->flags;
MSG("%s: unknown filesystem type '%s', defaulting to 'unix'.\n",
name, value );
return DRIVE_CASE_SENSITIVE | DRIVE_CASE_PRESERVING;
}
/***********************************************************************
* DRIVE_Init
*/
int DRIVE_Init(void)
{
int i, len, count = 0;
char name[] = "Drive A";
char path[MAX_PATHNAME_LEN];
char buffer[80];
struct stat drive_stat_buffer;
char *p;
DOSDRIVE *drive;
for (i = 0, drive = DOSDrives; i < MAX_DOS_DRIVES; i++, name[6]++, drive++)
{
PROFILE_GetWineIniString( name, "Path", "", path, sizeof(path)-1 );
if (path[0])
{
p = path + strlen(path) - 1;
while ((p > path) && ((*p == '/') || (*p == '\\'))) *p-- = '\0';
if (!path[0]) strcpy( path, "/" );
if (stat( path, &drive_stat_buffer ))
{
MSG("Could not stat %s, ignoring drive %c:\n", path, 'A' + i );
continue;
}
if (!S_ISDIR(drive_stat_buffer.st_mode))
{
MSG("%s is not a directory, ignoring drive %c:\n",
path, 'A' + i );
continue;
}
drive->root = HEAP_strdupA( SystemHeap, 0, path );
drive->dos_cwd = HEAP_strdupA( SystemHeap, 0, "" );
drive->unix_cwd = HEAP_strdupA( SystemHeap, 0, "" );
drive->type = DRIVE_GetDriveType( name );
drive->device = NULL;
drive->flags = 0;
drive->dev = drive_stat_buffer.st_dev;
drive->ino = drive_stat_buffer.st_ino;
/* Get the drive label */
PROFILE_GetWineIniString( name, "Label", name, drive->label, 12 );
if ((len = strlen(drive->label)) < 11)
{
/* Pad label with spaces */
memset( drive->label + len, ' ', 11 - len );
drive->label[12] = '\0';
}
/* Get the serial number */
PROFILE_GetWineIniString( name, "Serial", "12345678",
buffer, sizeof(buffer) );
drive->serial = strtoul( buffer, NULL, 16 );
/* Get the filesystem type */
PROFILE_GetWineIniString( name, "Filesystem", "unix",
buffer, sizeof(buffer) );
drive->flags = DRIVE_GetFSFlags( name, buffer );
/* Get the device */
PROFILE_GetWineIniString( name, "Device", "",
buffer, sizeof(buffer) );
if (buffer[0])
drive->device = HEAP_strdupA( SystemHeap, 0, buffer );
/* Make the first hard disk the current drive */
if ((DRIVE_CurDrive == -1) && (drive->type == TYPE_HD))
DRIVE_CurDrive = i;
count++;
TRACE(dosfs, "%s: path=%s type=%s label='%s' serial=%08lx flags=%08x dev=%x ino=%x\n",
name, path, DRIVE_Types[drive->type],
drive->label, drive->serial, drive->flags,
(int)drive->dev, (int)drive->ino );
}
else WARN(dosfs, "%s: not defined\n", name );
}
if (!count)
{
MSG("Warning: no valid DOS drive found, check your configuration file.\n" );
/* Create a C drive pointing to Unix root dir */
DOSDrives[2].root = HEAP_strdupA( SystemHeap, 0, "/" );
DOSDrives[2].dos_cwd = HEAP_strdupA( SystemHeap, 0, "" );
DOSDrives[2].unix_cwd = HEAP_strdupA( SystemHeap, 0, "" );
strcpy( DOSDrives[2].label, "Drive C " );
DOSDrives[2].serial = 0x12345678;
DOSDrives[2].type = TYPE_HD;
DOSDrives[2].flags = 0;
DRIVE_CurDrive = 2;
}
/* Make sure the current drive is valid */
if (DRIVE_CurDrive == -1)
{
for (i = 0, drive = DOSDrives; i < MAX_DOS_DRIVES; i++, drive++)
{
if (drive->root && !(drive->flags & DRIVE_DISABLED))
{
DRIVE_CurDrive = i;
break;
}
}
}
return 1;
}
/***********************************************************************
* DRIVE_IsValid
*/
int DRIVE_IsValid( int drive )
{
if ((drive < 0) || (drive >= MAX_DOS_DRIVES)) return 0;
return (DOSDrives[drive].root &&
!(DOSDrives[drive].flags & DRIVE_DISABLED));
}
/***********************************************************************
* DRIVE_GetCurrentDrive
*/
int DRIVE_GetCurrentDrive(void)
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
if (pTask && (pTask->curdrive & 0x80)) return pTask->curdrive & ~0x80;
return DRIVE_CurDrive;
}
/***********************************************************************
* DRIVE_SetCurrentDrive
*/
int DRIVE_SetCurrentDrive( int drive )
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
if (!DRIVE_IsValid( drive ))
{
DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
return 0;
}
TRACE(dosfs, "%c:\n", 'A' + drive );
DRIVE_CurDrive = drive;
if (pTask) pTask->curdrive = drive | 0x80;
return 1;
}
/***********************************************************************
* DRIVE_FindDriveRoot
*
* Find a drive for which the root matches the begginning of the given path.
* This can be used to translate a Unix path into a drive + DOS path.
* Return value is the drive, or -1 on error. On success, path is modified
* to point to the beginning of the DOS path.
*/
int DRIVE_FindDriveRoot( const char **path )
{
/* idea: check at all '/' positions.
* If the device and inode of that path is identical with the
* device and inode of the current drive then we found a solution.
* If there is another drive pointing to a deeper position in
* the file tree, we want to find that one, not the earlier solution.
*/
int drive, rootdrive = -1;
char buffer[MAX_PATHNAME_LEN];
char *next = buffer;
const char *p = *path;
struct stat st;
strcpy( buffer, "/" );
for (;;)
{
if (stat( buffer, &st ) || !S_ISDIR( st.st_mode )) break;
/* Find the drive */
for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
{
if (!DOSDrives[drive].root ||
(DOSDrives[drive].flags & DRIVE_DISABLED)) continue;
if ((DOSDrives[drive].dev == st.st_dev) &&
(DOSDrives[drive].ino == st.st_ino))
{
rootdrive = drive;
*path = p;
}
}
/* Get the next path component */
*next++ = '/';
while ((*p == '/') || (*p == '\\')) p++;
if (!*p) break;
while (!IS_END_OF_NAME(*p)) *next++ = *p++;
*next = 0;
}
*next = 0;
if (rootdrive != -1)
TRACE(dosfs, "%s -> drive %c:, root='%s', name='%s'\n",
buffer, 'A' + rootdrive,
DOSDrives[rootdrive].root, *path );
return rootdrive;
}
/***********************************************************************
* DRIVE_GetRoot
*/
const char * DRIVE_GetRoot( int drive )
{
if (!DRIVE_IsValid( drive )) return NULL;
return DOSDrives[drive].root;
}
/***********************************************************************
* DRIVE_GetDosCwd
*/
const char * DRIVE_GetDosCwd( int drive )
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
if (!DRIVE_IsValid( drive )) return NULL;
/* Check if we need to change the directory to the new task. */
if (pTask && (pTask->curdrive & 0x80) && /* The task drive is valid */
((pTask->curdrive & ~0x80) == drive) && /* and it's the one we want */
(DRIVE_LastTask != GetCurrentTask())) /* and the task changed */
{
/* Perform the task-switch */
if (!DRIVE_Chdir( drive, pTask->curdir )) DRIVE_Chdir( drive, "\\" );
DRIVE_LastTask = GetCurrentTask();
}
return DOSDrives[drive].dos_cwd;
}
/***********************************************************************
* DRIVE_GetUnixCwd
*/
const char * DRIVE_GetUnixCwd( int drive )
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
if (!DRIVE_IsValid( drive )) return NULL;
/* Check if we need to change the directory to the new task. */
if (pTask && (pTask->curdrive & 0x80) && /* The task drive is valid */
((pTask->curdrive & ~0x80) == drive) && /* and it's the one we want */
(DRIVE_LastTask != GetCurrentTask())) /* and the task changed */
{
/* Perform the task-switch */
if (!DRIVE_Chdir( drive, pTask->curdir )) DRIVE_Chdir( drive, "\\" );
DRIVE_LastTask = GetCurrentTask();
}
return DOSDrives[drive].unix_cwd;
}
/***********************************************************************
* DRIVE_GetLabel
*/
const char * DRIVE_GetLabel( int drive )
{
if (!DRIVE_IsValid( drive )) return NULL;
return DOSDrives[drive].label;
}
/***********************************************************************
* DRIVE_GetSerialNumber
*/
DWORD DRIVE_GetSerialNumber( int drive )
{
if (!DRIVE_IsValid( drive )) return 0;
return DOSDrives[drive].serial;
}
/***********************************************************************
* DRIVE_SetSerialNumber
*/
int DRIVE_SetSerialNumber( int drive, DWORD serial )
{
if (!DRIVE_IsValid( drive )) return 0;
DOSDrives[drive].serial = serial;
return 1;
}
/***********************************************************************
* DRIVE_GetType
*/
DRIVETYPE DRIVE_GetType( int drive )
{
if (!DRIVE_IsValid( drive )) return TYPE_INVALID;
return DOSDrives[drive].type;
}
/***********************************************************************
* DRIVE_GetFlags
*/
UINT32 DRIVE_GetFlags( int drive )
{
if ((drive < 0) || (drive >= MAX_DOS_DRIVES)) return 0;
return DOSDrives[drive].flags;
}
/***********************************************************************
* DRIVE_Chdir
*/
int DRIVE_Chdir( int drive, const char *path )
{
DOS_FULL_NAME full_name;
char buffer[MAX_PATHNAME_LEN];
LPSTR unix_cwd;
BY_HANDLE_FILE_INFORMATION info;
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
TRACE(dosfs, "(%c:,%s)\n", 'A' + drive, path );
strcpy( buffer, "A:" );
buffer[0] += drive;
lstrcpyn32A( buffer + 2, path, sizeof(buffer) - 2 );
if (!DOSFS_GetFullName( buffer, TRUE, &full_name )) return 0;
if (!FILE_Stat( full_name.long_name, &info )) return 0;
if (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
{
DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
return 0;
}
unix_cwd = full_name.long_name + strlen( DOSDrives[drive].root );
while (*unix_cwd == '/') unix_cwd++;
TRACE(dosfs, "(%c:): unix_cwd=%s dos_cwd=%s\n",
'A' + drive, unix_cwd, full_name.short_name + 3 );
HeapFree( SystemHeap, 0, DOSDrives[drive].dos_cwd );
HeapFree( SystemHeap, 0, DOSDrives[drive].unix_cwd );
DOSDrives[drive].dos_cwd = HEAP_strdupA( SystemHeap, 0,
full_name.short_name + 3 );
DOSDrives[drive].unix_cwd = HEAP_strdupA( SystemHeap, 0, unix_cwd );
if (pTask && (pTask->curdrive & 0x80) &&
((pTask->curdrive & ~0x80) == drive))
{
lstrcpyn32A( pTask->curdir, full_name.short_name + 2,
sizeof(pTask->curdir) );
DRIVE_LastTask = GetCurrentTask();
}
return 1;
}
/***********************************************************************
* DRIVE_Disable
*/
int DRIVE_Disable( int drive )
{
if ((drive < 0) || (drive >= MAX_DOS_DRIVES) || !DOSDrives[drive].root)
{
DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
return 0;
}
DOSDrives[drive].flags |= DRIVE_DISABLED;
return 1;
}
/***********************************************************************
* DRIVE_Enable
*/
int DRIVE_Enable( int drive )
{
if ((drive < 0) || (drive >= MAX_DOS_DRIVES) || !DOSDrives[drive].root)
{
DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
return 0;
}
DOSDrives[drive].flags &= ~DRIVE_DISABLED;
return 1;
}
/***********************************************************************
* DRIVE_SetLogicalMapping
*/
int DRIVE_SetLogicalMapping ( int existing_drive, int new_drive )
{
/* If new_drive is already valid, do nothing and return 0
otherwise, copy DOSDrives[existing_drive] to DOSDrives[new_drive] */
DOSDRIVE *old, *new;
old = DOSDrives + existing_drive;
new = DOSDrives + new_drive;
if ((existing_drive < 0) || (existing_drive >= MAX_DOS_DRIVES) ||
!old->root ||
(new_drive < 0) || (new_drive >= MAX_DOS_DRIVES))
{
DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
return 0;
}
if ( new->root )
{
TRACE(dosfs, "Can\'t map drive %c to drive %c - "
"drive %c already exists\n",
'A' + existing_drive, 'A' + new_drive,
'A' + new_drive );
/* it is already mapped there, so return success */
if (!strcmp(old->root,new->root))
return 1;
return 0;
}
new->root = HEAP_strdupA( SystemHeap, 0, old->root );
new->dos_cwd = HEAP_strdupA( SystemHeap, 0, old->dos_cwd );
new->unix_cwd = HEAP_strdupA( SystemHeap, 0, old->unix_cwd );
memcpy ( new->label, old->label, 12 );
new->serial = old->serial;
new->type = old->type;
new->flags = old->flags;
new->dev = old->dev;
new->ino = old->ino;
TRACE(dosfs, "Drive %c is now equal to drive %c\n",
'A' + new_drive, 'A' + existing_drive );
return 1;
}
/***********************************************************************
* DRIVE_OpenDevice
*
* Open the drive raw device and return a Unix fd (or -1 on error).
*/
int DRIVE_OpenDevice( int drive, int flags )
{
if (!DRIVE_IsValid( drive )) return -1;
return open( DOSDrives[drive].device, flags );
}
/***********************************************************************
* DRIVE_GetFreeSpace
*/
static int DRIVE_GetFreeSpace( int drive, DWORD *size, DWORD *available )
{
struct statfs info;
if (!DRIVE_IsValid(drive))
{
DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
return 0;
}
/* FIXME: add autoconf check for this */
#if defined(__svr4__) || defined(_SCO_DS)
if (statfs( DOSDrives[drive].root, &info, 0, 0) < 0)
#else
if (statfs( DOSDrives[drive].root, &info) < 0)
#endif
{
FILE_SetDosError();
WARN(dosfs, "cannot do statfs(%s)\n", DOSDrives[drive].root);
return 0;
}
*size = info.f_bsize * info.f_blocks;
#ifdef STATFS_HAS_BAVAIL
*available = info.f_bavail * info.f_bsize;
#else
# ifdef STATFS_HAS_BFREE
*available = info.f_bfree * info.f_bsize;
# else
# error "statfs has no bfree/bavail member!"
# endif
#endif
return 1;
}
/***********************************************************************
* GetDiskFreeSpace16 (KERNEL.422)
*/
BOOL16 WINAPI GetDiskFreeSpace16( LPCSTR root, LPDWORD cluster_sectors,
LPDWORD sector_bytes, LPDWORD free_clusters,
LPDWORD total_clusters )
{
return GetDiskFreeSpace32A( root, cluster_sectors, sector_bytes,
free_clusters, total_clusters );
}
/***********************************************************************
* GetDiskFreeSpace32A (KERNEL32.206)
*/
BOOL32 WINAPI GetDiskFreeSpace32A( LPCSTR root, LPDWORD cluster_sectors,
LPDWORD sector_bytes, LPDWORD free_clusters,
LPDWORD total_clusters )
{
int drive;
DWORD size,available;
if (!root) drive = DRIVE_GetCurrentDrive();
else
{
if ((root[1]) && ((root[1] != ':') || (root[2] != '\\')))
{
WARN(dosfs, "invalid root '%s'\n", root );
return FALSE;
}
drive = toupper(root[0]) - 'A';
}
if (!DRIVE_GetFreeSpace(drive, &size, &available)) return FALSE;
/* Cap the size and available at 2GB as per specs. */
if (size > 0x7fffffff) size = 0x7fffffff;
if (available > 0x7fffffff) available = 0x7fffffff;
if (DRIVE_GetType(drive)==TYPE_CDROM) {
*sector_bytes = 2048;
size /= 2048;
available /= 2048;
} else {
*sector_bytes = 512;
size /= 512;
available /= 512;
}
/* fixme: probably have to adjust those variables too for CDFS */
*cluster_sectors = 1;
while (*cluster_sectors * 65536 < size) *cluster_sectors *= 2;
*free_clusters = available/ *cluster_sectors;
*total_clusters = size/ *cluster_sectors;
return TRUE;
}
/***********************************************************************
* GetDiskFreeSpace32W (KERNEL32.207)
*/
BOOL32 WINAPI GetDiskFreeSpace32W( LPCWSTR root, LPDWORD cluster_sectors,
LPDWORD sector_bytes, LPDWORD free_clusters,
LPDWORD total_clusters )
{
LPSTR xroot;
BOOL32 ret;
xroot = HEAP_strdupWtoA( GetProcessHeap(), 0, root);
ret = GetDiskFreeSpace32A( xroot,cluster_sectors, sector_bytes,
free_clusters, total_clusters );
HeapFree( GetProcessHeap(), 0, xroot );
return ret;
}
/***********************************************************************
* GetDiskFreeSpaceEx32A (KERNEL32.871)
*/
BOOL32 WINAPI GetDiskFreeSpaceEx32A( LPCSTR root,
LPULARGE_INTEGER avail,
LPULARGE_INTEGER total,
LPULARGE_INTEGER totalfree)
{
int drive;
DWORD size,available;
if (!root) drive = DRIVE_GetCurrentDrive();
else
{
if ((root[1]) && ((root[1] != ':') || (root[2] != '\\')))
{
WARN(dosfs, "invalid root '%s'\n", root );
return FALSE;
}
drive = toupper(root[0]) - 'A';
}
if (!DRIVE_GetFreeSpace(drive, &size, &available)) return FALSE;
/*FIXME: Do we have the number of bytes available to the user? */
avail->HighPart = total->HighPart = 0;
avail->LowPart = available;
total->LowPart = size;
if(totalfree)
{
totalfree->HighPart =0;
totalfree->LowPart= available;
}
return TRUE;
}
/***********************************************************************
* GetDiskFreeSpaceEx32W (KERNEL32.873)
*/
BOOL32 WINAPI GetDiskFreeSpaceEx32W( LPCWSTR root, LPULARGE_INTEGER avail,
LPULARGE_INTEGER total,
LPULARGE_INTEGER totalfree)
{
LPSTR xroot;
BOOL32 ret;
xroot = HEAP_strdupWtoA( GetProcessHeap(), 0, root);
ret = GetDiskFreeSpaceEx32A( xroot, avail, total, totalfree);
HeapFree( GetProcessHeap(), 0, xroot );
return ret;
}
/***********************************************************************
* GetDriveType16 (KERNEL.136)
* This functions returns the drivetype of a drive in Win16.
* Note that it returns DRIVE_REMOTE for CD-ROMs, since MSCDEX uses the
* remote drive API. The returnvalue DRIVE_REMOTE for CD-ROMs has been
* verified on Win3.11 and Windows 95. Some programs rely on it, so don't
* do any pseudo-clever changes.
*
* RETURNS
* drivetype DRIVE_xxx
*/
UINT16 WINAPI GetDriveType16(
UINT16 drive /* [in] number (NOT letter) of drive */
) {
TRACE(dosfs, "(%c:)\n", 'A' + drive );
switch(DRIVE_GetType(drive))
{
case TYPE_FLOPPY: return DRIVE_REMOVABLE;
case TYPE_HD: return DRIVE_FIXED;
case TYPE_CDROM: return DRIVE_REMOTE;
case TYPE_NETWORK: return DRIVE_REMOTE;
case TYPE_INVALID:
default: return DRIVE_CANNOTDETERMINE;
}
}
/***********************************************************************
* GetDriveType32A (KERNEL32.208)
*
* Returns the type of the disk drive specified. If root is NULL the
* root of the current directory is used.
*
* RETURNS
*
* Type of drive (from Win32 SDK):
*
* DRIVE_UNKNOWN unable to find out anything about the drive
* DRIVE_NO_ROOT_DIR nonexistand root dir
* DRIVE_REMOVABLE the disk can be removed from the machine
* DRIVE_FIXED the disk can not be removed from the machine
* DRIVE_REMOTE network disk
* DRIVE_CDROM CDROM drive
* DRIVE_RAMDISK virtual disk in ram
*
* DRIVE_DOESNOTEXIST XXX Not valid return value
* DRIVE_CANNOTDETERMINE XXX Not valid return value
*
* BUGS
*
* Currently returns DRIVE_DOESNOTEXIST and DRIVE_CANNOTDETERMINE
* when it really should return DRIVE_NO_ROOT_DIR and DRIVE_UNKNOWN.
* Why where the former defines used?
*
* DRIVE_RAMDISK is unsupported.
*/
UINT32 WINAPI GetDriveType32A(LPCSTR root /* String describing drive */)
{
int drive;
TRACE(dosfs, "(%s)\n", debugstr_a(root));
if (NULL == root) drive = DRIVE_GetCurrentDrive();
else
{
if ((root[1]) && (root[1] != ':'))
{
WARN(dosfs, "invalid root '%s'\n", debugstr_a(root));
return DRIVE_DOESNOTEXIST;
}
drive = toupper(root[0]) - 'A';
}
switch(DRIVE_GetType(drive))
{
case TYPE_FLOPPY: return DRIVE_REMOVABLE;
case TYPE_HD: return DRIVE_FIXED;
case TYPE_CDROM: return DRIVE_CDROM;
case TYPE_NETWORK: return DRIVE_REMOTE;
case TYPE_INVALID: return DRIVE_DOESNOTEXIST;
default: return DRIVE_CANNOTDETERMINE;
}
}
/***********************************************************************
* GetDriveType32W (KERNEL32.209)
*/
UINT32 WINAPI GetDriveType32W( LPCWSTR root )
{
LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, root );
UINT32 ret = GetDriveType32A( xpath );
HeapFree( GetProcessHeap(), 0, xpath );
return ret;
}
/***********************************************************************
* GetCurrentDirectory16 (KERNEL.411)
*/
UINT16 WINAPI GetCurrentDirectory16( UINT16 buflen, LPSTR buf )
{
return (UINT16)GetCurrentDirectory32A( buflen, buf );
}
/***********************************************************************
* GetCurrentDirectory32A (KERNEL32.196)
*
* Returns "X:\\path\\etc\\".
*
* Despite the API description, return required length including the
* terminating null when buffer too small. This is the real behaviour.
*/
UINT32 WINAPI GetCurrentDirectory32A( UINT32 buflen, LPSTR buf )
{
UINT32 ret;
const char *s = DRIVE_GetDosCwd( DRIVE_GetCurrentDrive() );
assert(s);
ret = strlen(s) + 3; /* length of WHOLE current directory */
if (ret >= buflen) return ret + 1;
lstrcpyn32A( buf, "A:\\", MIN( 4, buflen ) );
if (buflen) buf[0] += DRIVE_GetCurrentDrive();
if (buflen > 3) lstrcpyn32A( buf + 3, s, buflen - 3 );
return ret;
}
/***********************************************************************
* GetCurrentDirectory32W (KERNEL32.197)
*/
UINT32 WINAPI GetCurrentDirectory32W( UINT32 buflen, LPWSTR buf )
{
LPSTR xpath = HeapAlloc( GetProcessHeap(), 0, buflen+1 );
UINT32 ret = GetCurrentDirectory32A( buflen, xpath );
lstrcpyAtoW( buf, xpath );
HeapFree( GetProcessHeap(), 0, xpath );
return ret;
}
/***********************************************************************
* SetCurrentDirectory (KERNEL.412)
*/
BOOL16 WINAPI SetCurrentDirectory16( LPCSTR dir )
{
return SetCurrentDirectory32A( dir );
}
/***********************************************************************
* SetCurrentDirectory32A (KERNEL32.479)
*/
BOOL32 WINAPI SetCurrentDirectory32A( LPCSTR dir )
{
int olddrive, drive = DRIVE_GetCurrentDrive();
if (!dir) {
ERR(file,"(NULL)!\n");
return FALSE;
}
if (dir[0] && (dir[1]==':'))
{
drive = tolower( *dir ) - 'a';
dir += 2;
}
/* WARNING: we need to set the drive before the dir, as DRIVE_Chdir
sets pTask->curdir only if pTask->curdrive is drive */
olddrive = drive; /* in case DRIVE_Chdir fails */
if (!(DRIVE_SetCurrentDrive( drive )))
return FALSE;
/* FIXME: what about empty strings? Add a \\ ? */
if (!DRIVE_Chdir( drive, dir )) {
DRIVE_SetCurrentDrive(olddrive);
return FALSE;
}
return TRUE;
}
/***********************************************************************
* SetCurrentDirectory32W (KERNEL32.480)
*/
BOOL32 WINAPI SetCurrentDirectory32W( LPCWSTR dirW )
{
LPSTR dir = HEAP_strdupWtoA( GetProcessHeap(), 0, dirW );
BOOL32 res = SetCurrentDirectory32A( dir );
HeapFree( GetProcessHeap(), 0, dir );
return res;
}
/***********************************************************************
* GetLogicalDriveStrings32A (KERNEL32.231)
*/
UINT32 WINAPI GetLogicalDriveStrings32A( UINT32 len, LPSTR buffer )
{
int drive, count;
for (drive = count = 0; drive < MAX_DOS_DRIVES; drive++)
if (DRIVE_IsValid(drive)) count++;
if (count * 4 * sizeof(char) <= len)
{
LPSTR p = buffer;
for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
if (DRIVE_IsValid(drive))
{
*p++ = 'a' + drive;
*p++ = ':';
*p++ = '\\';
*p++ = '\0';
}
*p = '\0';
}
return count * 4 * sizeof(char);
}
/***********************************************************************
* GetLogicalDriveStrings32W (KERNEL32.232)
*/
UINT32 WINAPI GetLogicalDriveStrings32W( UINT32 len, LPWSTR buffer )
{
int drive, count;
for (drive = count = 0; drive < MAX_DOS_DRIVES; drive++)
if (DRIVE_IsValid(drive)) count++;
if (count * 4 * sizeof(WCHAR) <= len)
{
LPWSTR p = buffer;
for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
if (DRIVE_IsValid(drive))
{
*p++ = (WCHAR)('a' + drive);
*p++ = (WCHAR)':';
*p++ = (WCHAR)'\\';
*p++ = (WCHAR)'\0';
}
*p = (WCHAR)'\0';
}
return count * 4 * sizeof(WCHAR);
}
/***********************************************************************
* GetLogicalDrives (KERNEL32.233)
*/
DWORD WINAPI GetLogicalDrives(void)
{
DWORD ret = 0;
int drive;
for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
if (DRIVE_IsValid(drive)) ret |= (1 << drive);
return ret;
}
/***********************************************************************
* GetVolumeInformation32A (KERNEL32.309)
*/
BOOL32 WINAPI GetVolumeInformation32A( LPCSTR root, LPSTR label,
DWORD label_len, DWORD *serial,
DWORD *filename_len, DWORD *flags,
LPSTR fsname, DWORD fsname_len )
{
int drive;
char *cp;
/* FIXME, SetLastErrors missing */
if (!root) drive = DRIVE_GetCurrentDrive();
else
{
if ((root[1]) && (root[1] != ':'))
{
WARN(dosfs, "invalid root '%s'\n",root);
return FALSE;
}
drive = toupper(root[0]) - 'A';
}
if (!DRIVE_IsValid( drive )) return FALSE;
if (label)
{
lstrcpyn32A( label, DOSDrives[drive].label, label_len );
for (cp = label; *cp; cp++);
while (cp != label && *(cp-1) == ' ') cp--;
*cp = '\0';
}
if (serial) *serial = DOSDrives[drive].serial;
/* Set the filesystem information */
/* Note: we only emulate a FAT fs at the present */
if (filename_len) {
if (DOSDrives[drive].flags & DRIVE_SHORT_NAMES)
*filename_len = 12;
else
*filename_len = 255;
}
if (flags) *flags = 0;
if (fsname) {
/* Diablo checks that return code ... */
if (DRIVE_GetType(drive)==TYPE_CDROM)
lstrcpyn32A( fsname, "CDFS", fsname_len );
else
lstrcpyn32A( fsname, "FAT", fsname_len );
}
return TRUE;
}
/***********************************************************************
* GetVolumeInformation32W (KERNEL32.310)
*/
BOOL32 WINAPI GetVolumeInformation32W( LPCWSTR root, LPWSTR label,
DWORD label_len, DWORD *serial,
DWORD *filename_len, DWORD *flags,
LPWSTR fsname, DWORD fsname_len )
{
LPSTR xroot = HEAP_strdupWtoA( GetProcessHeap(), 0, root );
LPSTR xvolname = label ? HeapAlloc(GetProcessHeap(),0,label_len) : NULL;
LPSTR xfsname = fsname ? HeapAlloc(GetProcessHeap(),0,fsname_len) : NULL;
BOOL32 ret = GetVolumeInformation32A( xroot, xvolname, label_len, serial,
filename_len, flags, xfsname,
fsname_len );
if (ret)
{
if (label) lstrcpyAtoW( label, xvolname );
if (fsname) lstrcpyAtoW( fsname, xfsname );
}
HeapFree( GetProcessHeap(), 0, xroot );
HeapFree( GetProcessHeap(), 0, xvolname );
HeapFree( GetProcessHeap(), 0, xfsname );
return ret;
}
BOOL32 WINAPI SetVolumeLabel32A(LPCSTR rootpath,LPCSTR volname) {
FIXME(dosfs,"(%s,%s),stub!\n",rootpath,volname);
return TRUE;
}
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