You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.9 KiB
73 lines
1.9 KiB
/* Copyright 1986-1992 Emmet P. Gray.
|
|
* Copyright 1996-1998,2001,2002,2009 Alain Knaff.
|
|
* This file is part of mtools.
|
|
*
|
|
* Mtools is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Mtools 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Mtools. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "sysincludes.h"
|
|
#include "msdos.h"
|
|
#include "fsP.h"
|
|
#include "mtoolsDirentry.h"
|
|
|
|
/*
|
|
* Remove a string of FAT entries (delete the file). The argument is
|
|
* the beginning of the string. Does not consider the file length, so
|
|
* if FAT is corrupted, watch out!
|
|
*/
|
|
|
|
int fat_free(Stream_t *Dir, unsigned int fat)
|
|
{
|
|
Stream_t *Stream = GetFs(Dir);
|
|
DeclareThis(Fs_t);
|
|
unsigned int next_no_step;
|
|
/* a zero length file? */
|
|
if (fat == 0)
|
|
return(0);
|
|
/* CONSTCOND */
|
|
while (!This->fat_error) {
|
|
/* get next cluster number */
|
|
next_no_step = fatDecode(This,fat);
|
|
/* mark current cluster as empty */
|
|
fatDeallocate(This,fat);
|
|
if (next_no_step >= This->last_fat)
|
|
break;
|
|
fat = next_no_step;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
int fatFreeWithDir(Stream_t *Dir, struct directory *dir)
|
|
{
|
|
unsigned int first;
|
|
|
|
if((!strncmp(dir->name,". ",8) ||
|
|
!strncmp(dir->name,".. ",8)) &&
|
|
!strncmp(dir->ext," ",3)) {
|
|
fprintf(stderr,"Trying to remove . or .. entry\n");
|
|
return -1;
|
|
}
|
|
|
|
first = START(dir);
|
|
if(fat32RootCluster(Dir))
|
|
first |= STARTHI(dir) << 16;
|
|
return fat_free(Dir, first);
|
|
}
|
|
|
|
int fatFreeWithDirentry(direntry_t *entry)
|
|
{
|
|
return fatFreeWithDir(entry->Dir, &entry->dir);
|
|
}
|
|
|