| #ifndef _ADFS_FS_H | |
| #define _ADFS_FS_H | |
| #include <uapi/linux/adfs_fs.h> | |
| /* | |
| * Calculate the boot block checksum on an ADFS drive. Note that this will | |
| * appear to be correct if the sector contains all zeros, so also check that | |
| * the disk size is non-zero!!! | |
| */ | |
| static inline int adfs_checkbblk(unsigned char *ptr) | |
| { | |
| unsigned int result = 0; | |
| unsigned char *p = ptr + 511; | |
| do { | |
| result = (result & 0xff) + (result >> 8); | |
| result = result + *--p; | |
| } while (p != ptr); | |
| return (result & 0xff) != ptr[511]; | |
| } | |
| #endif |