fec_private.h File Reference

#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <memory>
#include <string>
#include <vector>
#include <android-base/threads.h>
#include <crypto_utils/android_pubkey.h>
#include <fec/ecc.h>
#include <fec/io.h>
#include <openssl/obj_mac.h>
#include <openssl/sha.h>
#include <utils/Compat.h>
#include <cutils/klog.h>

Include dependency graph for fec_private.h:

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Classes
struct	verity_header
struct	ecc_info
struct	hashtree_info
struct	verity_info
struct	avb_info
struct	fec_handle

Macros
#define	WORK_MIN_THREADS   1
#define	WORK_MAX_THREADS   64
#define	VERITY_CACHE_BLOCKS   4096
#define	VERITY_NO_CACHE   UINT64_MAX
#define	VERITY_METADATA_SIZE   (8 * FEC_BLOCKSIZE)
#define	VERITY_TABLE_ARGS   10 /* mandatory arguments */
#define	VERITY_MIN_TABLE_SIZE   (VERITY_TABLE_ARGS * 2) /* for quick validation */
#define	VERITY_MAX_TABLE_SIZE   (VERITY_METADATA_SIZE - sizeof(verity_header))
#define	VERITY_MAGIC   0xB001B001
#define	VERITY_MAGIC_DISABLE   0x46464F56
#define	VERITY_VERSION   0
#define	VERITY_TABLE_FIELDS   10
#define	VERITY_TABLE_VERSION   1
#define	unlikely(x)   __builtin_expect(!!(x), 0)
#define	likely(x)   __builtin_expect(!!(x), 1)
#define	__stringify(x)   #x
#define	stringify(x)   __stringify(x)
#define	__log(func, type, format, args...)
#define	debug(format, args...)   __log(DEBUG, "debug", format, ##args)
#define	warn(format, args...)   __log(WARNING, "warning", format, ##args)
#define	error(format, args...)   __log(ERROR, "error", format, ##args)
#define	check(p)

Typedefs
typedef ssize_t(*	read_func) (fec_handle *f, uint8_t *dest, size_t count, uint64_t offset, size_t *errors)

Functions
bool	raw_pread (int fd, void *buf, size_t count, uint64_t offset)
bool	raw_pwrite (int fd, const void *buf, size_t count, uint64_t offset)
ssize_t	process (fec_handle *f, uint8_t *buf, size_t count, uint64_t offset, read_func func)
uint64_t	verity_get_size (uint64_t file_size, uint32_t *verity_levels, uint32_t *level_hashes, uint32_t padded_digest_size)
int	verity_parse_header (fec_handle *f, uint64_t offset)

Macro Definition Documentation

__log

#define __log	(		func,
			type,
			format,
			args...
	)

Value:

        KLOG_##func("fec", "<%d> " type ": %s: " format "\n", \
            (int)syscall(SYS_gettid), __FUNCTION__, ##args)

__stringify

#define __stringify

(

x

)

#x

check

#define check

(

p

)

Value:

    if (unlikely(!(p))) { \
        error("`%s' failed", #p); \
        errno = EFAULT; \
        return -1; \
    }

debug

#define debug	(		format,
			args...
	)		__log(DEBUG, "debug", format, ##args)

error

#define error	(		format,
			args...
	)		__log(ERROR, "error", format, ##args)

likely

#define likely

(

x

)

__builtin_expect(!!(x), 1)

stringify

#define stringify

(

x

)

__stringify(x)

unlikely

#define unlikely

(

x

)

__builtin_expect(!!(x), 0)

VERITY_CACHE_BLOCKS

#define VERITY_CACHE_BLOCKS   4096

VERITY_MAGIC

#define VERITY_MAGIC   0xB001B001

VERITY_MAGIC_DISABLE

#define VERITY_MAGIC_DISABLE   0x46464F56

VERITY_MAX_TABLE_SIZE

#define VERITY_MAX_TABLE_SIZE   (VERITY_METADATA_SIZE - sizeof(verity_header))

VERITY_METADATA_SIZE

#define VERITY_METADATA_SIZE   (8 * FEC_BLOCKSIZE)

VERITY_MIN_TABLE_SIZE

#define VERITY_MIN_TABLE_SIZE   (VERITY_TABLE_ARGS * 2) /* for quick validation */

VERITY_NO_CACHE

#define VERITY_NO_CACHE   UINT64_MAX

VERITY_TABLE_ARGS

#define VERITY_TABLE_ARGS   10 /* mandatory arguments */

VERITY_TABLE_FIELDS

#define VERITY_TABLE_FIELDS   10

VERITY_TABLE_VERSION

#define VERITY_TABLE_VERSION   1

VERITY_VERSION

#define VERITY_VERSION   0

warn

#define warn	(		format,
			args...
	)		__log(WARNING, "warning", format, ##args)

WORK_MAX_THREADS

#define WORK_MAX_THREADS   64

WORK_MIN_THREADS

#define WORK_MIN_THREADS   1

Typedef Documentation

read_func

typedef ssize_t(* read_func) (fec_handle *f, uint8_t *dest, size_t count, uint64_t offset, size_t *errors)

Function Documentation

process()

ssize_t process	(	fec_handle *	f,
		uint8_t *	buf,
		size_t	count,
		uint64_t	offset,
		read_func	func
	)

raw_pread()

bool raw_pread	(	int	fd,
		void *	buf,
		size_t	count,
		uint64_t	offset
	)

raw_pwrite()

bool raw_pwrite	(	int	fd,
		const void *	buf,
		size_t	count,
		uint64_t	offset
	)

verity_get_size()

uint64_t verity_get_size	(	uint64_t	file_size,
		uint32_t *	verity_levels,
		uint32_t *	level_hashes,
		uint32_t	padded_digest_size
	)

verity_parse_header()

int verity_parse_header	(	fec_handle *	f,
		uint64_t	offset
	)