/* * 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 <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])) /* 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__ */