mirror of https://github.com/pbatard/rufus.git
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/******************************************************************
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Copyright (C) 2012 Pete Batard <pete@akeo.ie>
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Based on fat16.c Copyright (C) 2009 Henrik Carlqvist
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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******************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include "file.h"
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#include "ntfs.h"
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int is_ntfs_fs(FILE *fp)
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{
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unsigned char aucMagic[] = {'N','T','F','S',' ',' ',' ',' '};
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return contains_data(fp, 0x03, aucMagic, sizeof(aucMagic));
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} /* is_ntfs_fs */
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int is_ntfs_br(FILE *fp)
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{
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/* A "file" is probably some kind of NTFS boot record if it contains the
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magic chars 0x55, 0xAA at positions 0x1FE */
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unsigned char aucRef[] = {0x55, 0xAA};
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unsigned char aucMagic[] = {'N','T','F','S',' ',' ',' ',' '};
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if( ! contains_data(fp, 0x1FE, aucRef, sizeof(aucRef)))
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return 0;
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if( ! contains_data(fp, 0x03, aucMagic, sizeof(aucMagic)))
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return 0;
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return 1;
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} /* is_ntfs_br */
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int entire_ntfs_br_matches(FILE *fp)
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{
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#include "br_ntfs_0x0.h"
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#include "br_ntfs_0x54.h"
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return
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( contains_data(fp, 0x0, br_ntfs_0x0, sizeof(br_ntfs_0x0)) &&
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/* BIOS Parameter Block might differ between systems */
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contains_data(fp, 0x54, br_ntfs_0x54, sizeof(br_ntfs_0x54)) );
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} /* entire_ntfs_br_matches */
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int write_ntfs_br(FILE *fp)
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{
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#include "br_ntfs_0x0.h"
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#include "br_ntfs_0x54.h"
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return
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( write_data(fp, 0x0, br_ntfs_0x0, sizeof(br_ntfs_0x0)) &&
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/* BIOS Parameter Block should not be overwritten */
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write_data(fp, 0x54, br_ntfs_0x54, sizeof(br_ntfs_0x54)) );
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} /* write_ntsf_br */
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