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/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Private header file for mount-encrypted helper tool.
*/
#ifndef _MOUNT_ENCRYPTED_H_
#define _MOUNT_ENCRYPTED_H_
/* #define DEBUG_ENABLED 1 */
#define DEBUG_TIME_DELTA 1
#include <openssl/err.h>
#include <openssl/sha.h>
#define DIGEST_LENGTH SHA256_DIGEST_LENGTH
#define _ERROR(f, a...) do { \
fprintf(stderr, "ERROR[pid:%d] %s (%s, %d): ", \
getpid(), __func__, __FILE__, __LINE__); \
fprintf(stderr, f, ## a); \
} while (0)
#define ERROR(f, a...) do { \
_ERROR(f, ## a); \
fprintf(stderr, "\n"); \
fflush(stderr); \
} while (0)
#define PERROR(f, a...) do { \
_ERROR(f, ## a); \
fprintf(stderr, ": %s\n", strerror(errno)); \
fflush(stderr); \
} while (0)
#define SSL_ERROR(f, a...) do { \
ERR_load_crypto_strings(); \
_ERROR(f, ## a); \
fprintf(stderr, "%s\n", ERR_error_string(ERR_get_error(), NULL)); \
fflush(stderr); \
} while (0)
#if DEBUG_ENABLED
extern struct timeval tick;
extern struct timeval tick_start;
# define TICK_INIT() do { \
gettimeofday(&tick, NULL); \
tick_start = tick; \
} while (0)
# ifdef DEBUG_TIME_DELTA
/* This timeval helper copied from glibc manual. */
static inline int timeval_subtract(struct timeval *result,
struct timeval *x,
struct timeval *y)
{
/* Perform the carry for the later subtraction by updating y. */
if (x->tv_usec < y->tv_usec) {
int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
y->tv_usec -= 1000000 * nsec;
y->tv_sec += nsec;
}
if (x->tv_usec - y->tv_usec > 1000000) {
int nsec = (x->tv_usec - y->tv_usec) / 1000000;
y->tv_usec += 1000000 * nsec;
y->tv_sec -= nsec;
}
/* Compute the time remaining to wait.
* tv_usec is certainly positive.
*/
result->tv_sec = x->tv_sec - y->tv_sec;
result->tv_usec = x->tv_usec - y->tv_usec;
/* Return 1 if result is negative. */
return x->tv_sec < y->tv_sec;
}
# define TICK_REPORT() do { \
struct timeval now, diff; \
gettimeofday(&now, NULL); \
timeval_subtract(&diff, &now, &tick); \
printf("\tTook: [pid:%d, %2lu.%06lus]\n", getpid(), \
(unsigned long)diff.tv_sec, (unsigned long)diff.tv_usec); \
tick = now; \
} while (0)
# else
# define TICK_REPORT() do { \
gettimeofday(&tick, NULL); \
printf("[%2d.%06d] ", (int)tick.tv_sec, (int)tick.tv_usec); \
} while (0)
# endif
# define TICK_DONE() do { \
struct timeval tick_done; \
TICK_REPORT(); \
timeval_subtract(&tick_done, &tick, &tick_start); \
printf("Process Lifetime: [pid:%d, %2d.%06ds]\n", getpid(), \
(int)tick_done.tv_sec, (int)tick_done.tv_usec); \
} while (0)
#else
# define TICK_INIT() do { } while (0)
# define TICK_REPORT() do { } while (0)
# define TICK_DONE() do { } while (0)
#endif
#define _INFO(f, a...) do { \
printf("[pid:%d] ", getpid()); \
printf(f, ## a); \
printf("\n"); \
fflush(stdout); \
} while (0)
#define INFO(f, a...) do { \
TICK_REPORT(); \
_INFO(f, ## a); \
} while (0)
#define INFO_INIT(f, a...) do { \
TICK_INIT(); \
INFO(f, ## a); \
} while (0)
#define INFO_DONE(f, a...) do { \
TICK_DONE(); \
INFO(f, ## a); \
} while (0)
#if DEBUG_ENABLED
# define DEBUG(f, a...) do { \
TICK_REPORT(); \
_INFO(f, ## a); \
} while (0)
#else
# define DEBUG(f, a...) do { } while (0)
#endif
#if DEBUG_ENABLED
static inline void debug_dump_hex(const char *name, uint8_t *data,
uint32_t size)
{
int i;
printf("%s: ", name);
for (i = 0; i < size; i++) {
printf("%02x ", data[i]);
}
printf("\n");
}
#else
# define debug_dump_hex(n, d, s) do { } while (0)
#endif
#endif /* _MOUNT_ENCRYPTED_H_ */
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