138 lines
4.3 KiB
C
Executable File
138 lines
4.3 KiB
C
Executable File
/*
|
|
* Copyright (c) Artem Bityutskiy, 2007, 2008
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef __MTD_UTILS_COMMON_H__
|
|
#define __MTD_UTILS_COMMON_H__
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
|
|
#ifndef PROGRAM_NAME
|
|
# error "You must define PROGRAM_NAME before including this header"
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifndef MIN /* some C lib headers define this for us */
|
|
#define MIN(a, b) ((a) < (b) ? (a) : (b))
|
|
#endif
|
|
#ifndef MAX
|
|
#define MAX(a, b) ((a) > (b) ? (a) : (b))
|
|
#endif
|
|
#define min(a, b) MIN(a, b) /* glue for linux kernel source */
|
|
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
|
|
|
|
#ifndef O_CLOEXEC
|
|
#define O_CLOEXEC 0
|
|
#endif
|
|
|
|
/* Verbose messages */
|
|
#define bareverbose(verbose, fmt, ...) do { \
|
|
if (verbose) \
|
|
printf(fmt, ##__VA_ARGS__); \
|
|
} while(0)
|
|
#define verbose(verbose, fmt, ...) \
|
|
bareverbose(verbose, "%s: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__)
|
|
|
|
/* Normal messages */
|
|
#define normsg_cont(fmt, ...) do { \
|
|
printf("%s: " fmt, PROGRAM_NAME, ##__VA_ARGS__); \
|
|
} while(0)
|
|
#define normsg(fmt, ...) do { \
|
|
normsg_cont(fmt "\n", ##__VA_ARGS__); \
|
|
} while(0)
|
|
|
|
/* Error messages */
|
|
#define errmsg(fmt, ...) ({ \
|
|
fprintf(stderr, "%s: error!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
|
|
-1; \
|
|
})
|
|
#define errmsg_die(fmt, ...) do { \
|
|
exit(errmsg(fmt, ##__VA_ARGS__)); \
|
|
} while(0)
|
|
|
|
/* System error messages */
|
|
#define sys_errmsg(fmt, ...) ({ \
|
|
int _err = errno; \
|
|
errmsg(fmt, ##__VA_ARGS__); \
|
|
fprintf(stderr, "%*serror %d (%s)\n", (int)sizeof(PROGRAM_NAME) + 1,\
|
|
"", _err, strerror(_err)); \
|
|
-1; \
|
|
})
|
|
#define sys_errmsg_die(fmt, ...) do { \
|
|
exit(sys_errmsg(fmt, ##__VA_ARGS__)); \
|
|
} while(0)
|
|
|
|
/* Warnings */
|
|
#define warnmsg(fmt, ...) do { \
|
|
fprintf(stderr, "%s: warning!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
|
|
} while(0)
|
|
|
|
static inline int is_power_of_2(unsigned long long n)
|
|
{
|
|
return (n != 0 && ((n & (n - 1)) == 0));
|
|
}
|
|
|
|
/**
|
|
* simple_strtoX - convert a hex/dec/oct string into a number
|
|
* @snum: buffer to convert
|
|
* @error: set to 1 when buffer isn't fully consumed
|
|
*
|
|
* These functions are similar to the standard strtoX() functions, but they are
|
|
* a little bit easier to use if you want to convert full string of digits into
|
|
* the binary form. The typical usage:
|
|
*
|
|
* int error = 0;
|
|
* unsigned long num;
|
|
*
|
|
* num = simple_strtoul(str, &error);
|
|
* if (error || ... if needed, your check that num is not out of range ...)
|
|
* error_happened();
|
|
*/
|
|
#define simple_strtoX(func, type) \
|
|
static inline type simple_##func(const char *snum, int *error) \
|
|
{ \
|
|
char *endptr; \
|
|
type ret = func(snum, &endptr, 0); \
|
|
\
|
|
if (error && (!*snum || *endptr)) { \
|
|
errmsg("%s: unable to parse the number '%s'", #func, snum); \
|
|
*error = 1; \
|
|
} \
|
|
\
|
|
return ret; \
|
|
}
|
|
simple_strtoX(strtol, long int)
|
|
simple_strtoX(strtoll, long long int)
|
|
simple_strtoX(strtoul, unsigned long int)
|
|
simple_strtoX(strtoull, unsigned long long int)
|
|
|
|
#include "xalloc.h"
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* !__MTD_UTILS_COMMON_H__ */
|