cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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adfs_fs.h (574B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ADFS_FS_H
      3#define _ADFS_FS_H
      4
      5#include <uapi/linux/adfs_fs.h>
      6
      7/*
      8 * Calculate the boot block checksum on an ADFS drive.  Note that this will
      9 * appear to be correct if the sector contains all zeros, so also check that
     10 * the disk size is non-zero!!!
     11 */
     12static inline int adfs_checkbblk(unsigned char *ptr)
     13{
     14	unsigned int result = 0;
     15	unsigned char *p = ptr + 511;
     16
     17	do {
     18	        result = (result & 0xff) + (result >> 8);
     19        	result = result + *--p;
     20	} while (p != ptr);
     21
     22	return (result & 0xff) != ptr[511];
     23}
     24#endif