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/* SPDX-License-Identifier: GPL-2.0 */ #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
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