1*ac600533SPrasad Joshi #include <linux/stringify.h> 2*ac600533SPrasad Joshi 3f3150089SPekka Enberg #ifndef KVM__UTIL_H 4f3150089SPekka Enberg #define KVM__UTIL_H 5ad054a21SCyrill Gorcunov 62a601aafSPekka Enberg #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 72a601aafSPekka Enberg 8ad054a21SCyrill Gorcunov /* 9ad054a21SCyrill Gorcunov * Some bits are stolen from perf tool :) 10ad054a21SCyrill Gorcunov */ 11ad054a21SCyrill Gorcunov 12ad054a21SCyrill Gorcunov #include <unistd.h> 13ad054a21SCyrill Gorcunov #include <stdio.h> 14ad054a21SCyrill Gorcunov #include <stddef.h> 15ad054a21SCyrill Gorcunov #include <stdlib.h> 16ad054a21SCyrill Gorcunov #include <stdarg.h> 17ad054a21SCyrill Gorcunov #include <string.h> 18ad054a21SCyrill Gorcunov #include <errno.h> 19ad054a21SCyrill Gorcunov #include <limits.h> 20ad054a21SCyrill Gorcunov #include <sys/param.h> 21ad054a21SCyrill Gorcunov #include <sys/types.h> 22ad054a21SCyrill Gorcunov 23ad054a21SCyrill Gorcunov #ifdef __GNUC__ 24ad054a21SCyrill Gorcunov #define NORETURN __attribute__((__noreturn__)) 25ad054a21SCyrill Gorcunov #else 26ad054a21SCyrill Gorcunov #define NORETURN 27ad054a21SCyrill Gorcunov #ifndef __attribute__ 28ad054a21SCyrill Gorcunov #define __attribute__(x) 29ad054a21SCyrill Gorcunov #endif 30ad054a21SCyrill Gorcunov #endif 31ad054a21SCyrill Gorcunov 32ad054a21SCyrill Gorcunov extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 33ad054a21SCyrill Gorcunov extern void die_perror(const char *s) NORETURN; 34ad054a21SCyrill Gorcunov extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 35ad054a21SCyrill Gorcunov extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 3607f9d0dbSCyrill Gorcunov extern void info(const char *err, ...) __attribute__((format (printf, 1, 2))); 37ad054a21SCyrill Gorcunov extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 38ad054a21SCyrill Gorcunov 39b3594ec7SCyrill Gorcunov #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) 40b3594ec7SCyrill Gorcunov 41ad054a21SCyrill Gorcunov #define DIE_IF(cnd) \ 42ad054a21SCyrill Gorcunov do { \ 43ad054a21SCyrill Gorcunov if (cnd) \ 44ad054a21SCyrill Gorcunov die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 45ad054a21SCyrill Gorcunov __stringify(cnd) "\n"); \ 46ad054a21SCyrill Gorcunov } while (0) 47ad054a21SCyrill Gorcunov 480b322d96SCyrill Gorcunov extern size_t strlcat(char *dest, const char *src, size_t count); 490b322d96SCyrill Gorcunov 5098ee79f4SPrasad Joshi /* some inline functions */ 5198ee79f4SPrasad Joshi 5298ee79f4SPrasad Joshi static inline const char *skip_prefix(const char *str, const char *prefix) 5398ee79f4SPrasad Joshi { 5498ee79f4SPrasad Joshi size_t len = strlen(prefix); 5598ee79f4SPrasad Joshi return strncmp(str, prefix, len) ? NULL : str + len; 5698ee79f4SPrasad Joshi } 5798ee79f4SPrasad Joshi 58f3150089SPekka Enberg #endif /* KVM__UTIL_H */ 59