#ifndef GIT_COMPAT_UTIL_H#define GIT_COMPAT_UTIL_H #define _FILE_OFFSET_BITS 64 #ifndef FLEX_ARRAY/* * See if our compiler is known to support flexible array members. */#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)# define FLEX_ARRAY /* empty */#elif defined(__GNUC__)# if (__GNUC__ >= 3)#  define FLEX_ARRAY /* empty */# else#  define FLEX_ARRAY 0 /* older GNU extension */# endif#endif /* * Otherwise, default to safer but a bit wasteful traditional style */#ifndef FLEX_ARRAY# define FLEX_ARRAY 1#endif#endif #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) #ifdef __GNUC__#define TYPEOF(x) (__typeof__(x))#else#define TYPEOF(x)#endif #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))#define HAS_MULTI_BITS(i)  ((i) & ((i) - 1))  /* checks if an integer has more than 1 bit set */ /* Approximation of the length of the decimal representation of this type. */#define decimal_length(x)	((int)(sizeof(x) * 2.56 + 0.5) + 1) #define _ALL_SOURCE 1#define _BSD_SOURCE 1#define HAS_BOOL #include <unistd.h>#include <stdio.h>#include <sys/stat.h>#include <sys/statfs.h>#include <fcntl.h>#include <stdbool.h>#include <stddef.h>#include <stdlib.h>#include <stdarg.h>#include <string.h>#include <errno.h>#include <limits.h>#include <sys/param.h>#include <sys/types.h>#include <dirent.h>#include <sys/time.h>#include <time.h>#include <signal.h>#include <fnmatch.h>#include <assert.h>#include <regex.h>#include <utime.h>#include <sys/wait.h>#include <sys/poll.h>#include <sys/socket.h>#include <sys/ioctl.h>#include <sys/select.h>#include <netinet/in.h>#include <netinet/tcp.h>#include <arpa/inet.h>#include <netdb.h>#include <inttypes.h>#include "../../../include/linux/magic.h"#include "types.h"#include <sys/ttydefaults.h> extern const char *graph_line;extern const char *graph_dotted_line;extern char buildid_dir[]; /* On most systems <limits.h> would have given us this, but * not on some systems (e.g. GNU/Hurd). */#ifndef PATH_MAX#define PATH_MAX 4096#endif #ifndef PRIuMAX#define PRIuMAX "llu"#endif #ifndef PRIu32#define PRIu32 "u"#endif #ifndef PRIx32#define PRIx32 "x"#endif #ifndef PATH_SEP#define PATH_SEP ':'#endif #ifndef STRIP_EXTENSION#define STRIP_EXTENSION ""#endif #ifndef has_dos_drive_prefix#define has_dos_drive_prefix(path) 0#endif #ifndef is_dir_sep#define is_dir_sep(c) ((c) == '/')#endif #ifdef __GNUC__#define NORETURN __attribute__((__noreturn__))#else#define NORETURN#ifndef __attribute__#define __attribute__(x)#endif#endif /* General helper functions */extern void usage(const char *err) NORETURN;extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); #include "../../../include/linux/stringify.h" #define DIE_IF(cnd)	\	do { if (cnd)	\		die(" at (" __FILE__ ":" __stringify(__LINE__) "): "	\		    __stringify(cnd) "\n");				\	} while (0)  extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); extern int prefixcmp(const char *str, const char *prefix);extern void set_buildid_dir(void);extern void disable_buildid_cache(void); static inline const char *skip_prefix(const char *str, const char *prefix){	size_t len = strlen(prefix);	return strncmp(str, prefix, len) ? NULL : str + len;} #ifdef __GLIBC_PREREQ#if __GLIBC_PREREQ(2, 1)#define HAVE_STRCHRNUL#endif#endif #ifndef HAVE_STRCHRNUL#define strchrnul gitstrchrnulstatic inline char *gitstrchrnul(const char *s, int c){	while (*s && *s != c)		s++;	return (char *)s;}#endif /* * Wrappers: */extern char *xstrdup(const char *str);extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));  static inline void *zalloc(size_t size){	return calloc(1, size);} static inline int has_extension(const char *filename, const char *ext){	size_t len = strlen(filename);	size_t extlen = strlen(ext); 	return len > extlen && !memcmp(filename + len - extlen, ext, extlen);} /* Sane ctype - no locale, and works with signed chars */#undef isascii#undef isspace#undef isdigit#undef isxdigit#undef isalpha#undef isprint#undef isalnum#undef islower#undef isupper#undef tolower#undef toupper extern unsigned char sane_ctype[256];#define GIT_SPACE		0x01#define GIT_DIGIT		0x02#define GIT_ALPHA		0x04#define GIT_GLOB_SPECIAL	0x08#define GIT_REGEX_SPECIAL	0x10#define GIT_PRINT_EXTRA		0x20#define GIT_PRINT		0x3E#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)#define isascii(x) (((x) & ~0x7f) == 0)#define isspace(x) sane_istest(x,GIT_SPACE)#define isdigit(x) sane_istest(x,GIT_DIGIT)#define isxdigit(x)	\	(sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')#define isalpha(x) sane_istest(x,GIT_ALPHA)#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)#define isprint(x) sane_istest(x,GIT_PRINT)#define islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20))#define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20))#define tolower(x) sane_case((unsigned char)(x), 0x20)#define toupper(x) sane_case((unsigned char)(x), 0) static inline int sane_case(int x, int high){	if (sane_istest(x, GIT_ALPHA))		x = (x & ~0x20) | high;	return x;} int mkdir_p(char *path, mode_t mode);int copyfile(const char *from, const char *to); s64 perf_atoll(const char *str);char **argv_split(const char *str, int *argcp);void argv_free(char **argv);bool strglobmatch(const char *str, const char *pat);bool strlazymatch(const char *str, const char *pat);int strtailcmp(const char *s1, const char *s2);unsigned long convert_unit(unsigned long value, char *unit);int readn(int fd, void *buf, size_t size); struct perf_event_attr; void event_attr_init(struct perf_event_attr *attr); #define _STR(x) #x#define STR(x) _STR(x) /* *  Determine whether some value is a power of two, where zero is * *not* considered a power of two. */ static inline __attribute__((const))bool is_power_of_2(unsigned long n){	return (n != 0 && ((n & (n - 1)) == 0));} size_t hex_width(u64 v); #endif