1#ifndef GIT_COMPAT_UTIL_H 2#define GIT_COMPAT_UTIL_H 3 4#ifndef FLEX_ARRAY 5/* 6 * See if our compiler is known to support flexible array members. 7 */ 8#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) 9# define FLEX_ARRAY /* empty */ 10#elif defined(__GNUC__) 11# if (__GNUC__ >= 3) 12# define FLEX_ARRAY /* empty */ 13# else 14# define FLEX_ARRAY 0 /* older GNU extension */ 15# endif 16#endif 17 18/* 19 * Otherwise, default to safer but a bit wasteful traditional style 20 */ 21#ifndef FLEX_ARRAY 22# define FLEX_ARRAY 1 23#endif 24#endif 25 26#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) 27 28#ifdef __GNUC__ 29#define TYPEOF(x) (__typeof__(x)) 30#else 31#define TYPEOF(x) 32#endif 33 34#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits)))) 35#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ 36 37/* Approximation of the length of the decimal representation of this type. */ 38#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) 39 40#define _ALL_SOURCE 1 41#define _BSD_SOURCE 1 42#define HAS_BOOL 43 44#include <unistd.h> 45#include <stdio.h> 46#include <sys/stat.h> 47#include <sys/statfs.h> 48#include <fcntl.h> 49#include <stdbool.h> 50#include <stddef.h> 51#include <stdlib.h> 52#include <stdarg.h> 53#include <string.h> 54#include <errno.h> 55#include <limits.h> 56#include <sys/param.h> 57#include <sys/types.h> 58#include <dirent.h> 59#include <sys/time.h> 60#include <time.h> 61#include <signal.h> 62#include <fnmatch.h> 63#include <assert.h> 64#include <regex.h> 65#include <utime.h> 66#include <sys/wait.h> 67#include <sys/poll.h> 68#include <sys/socket.h> 69#include <sys/ioctl.h> 70#include <inttypes.h> 71#include <linux/magic.h> 72#include "types.h" 73#include <sys/ttydefaults.h> 74#include <lk/debugfs.h> 75#include <termios.h> 76 77extern const char *graph_line; 78extern const char *graph_dotted_line; 79extern char buildid_dir[]; 80extern char tracing_events_path[]; 81extern void perf_debugfs_set_path(const char *mountpoint); 82const char *perf_debugfs_mount(const char *mountpoint); 83const char *find_tracing_dir(void); 84char *get_tracing_file(const char *name); 85void put_tracing_file(char *file); 86 87/* On most systems <limits.h> would have given us this, but 88 * not on some systems (e.g. GNU/Hurd). 89 */ 90#ifndef PATH_MAX 91#define PATH_MAX 4096 92#endif 93 94#ifndef PRIuMAX 95#define PRIuMAX "llu" 96#endif 97 98#ifndef PRIu32 99#define PRIu32 "u" 100#endif 101 102#ifndef PRIx32 103#define PRIx32 "x" 104#endif 105 106#ifndef PATH_SEP 107#define PATH_SEP ':' 108#endif 109 110#ifndef STRIP_EXTENSION 111#define STRIP_EXTENSION "" 112#endif 113 114#ifndef has_dos_drive_prefix 115#define has_dos_drive_prefix(path) 0 116#endif 117 118#ifndef is_dir_sep 119#define is_dir_sep(c) ((c) == '/') 120#endif 121 122#ifdef __GNUC__ 123#define NORETURN __attribute__((__noreturn__)) 124#else 125#define NORETURN 126#ifndef __attribute__ 127#define __attribute__(x) 128#endif 129#endif 130 131/* General helper functions */ 132extern void usage(const char *err) NORETURN; 133extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 134extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 135extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 136 137#include "../../../include/linux/stringify.h" 138 139#define DIE_IF(cnd) \ 140 do { if (cnd) \ 141 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 142 __stringify(cnd) "\n"); \ 143 } while (0) 144 145 146extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 147 148extern int prefixcmp(const char *str, const char *prefix); 149extern void set_buildid_dir(void); 150extern void disable_buildid_cache(void); 151 152static inline const char *skip_prefix(const char *str, const char *prefix) 153{ 154 size_t len = strlen(prefix); 155 return strncmp(str, prefix, len) ? NULL : str + len; 156} 157 158#ifdef __GLIBC_PREREQ 159#if __GLIBC_PREREQ(2, 1) 160#define HAVE_STRCHRNUL 161#endif 162#endif 163 164#ifndef HAVE_STRCHRNUL 165#define strchrnul gitstrchrnul 166static inline char *gitstrchrnul(const char *s, int c) 167{ 168 while (*s && *s != c) 169 s++; 170 return (char *)s; 171} 172#endif 173 174/* 175 * Wrappers: 176 */ 177extern char *xstrdup(const char *str); 178extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 179 180 181static inline void *zalloc(size_t size) 182{ 183 return calloc(1, size); 184} 185 186static inline int has_extension(const char *filename, const char *ext) 187{ 188 size_t len = strlen(filename); 189 size_t extlen = strlen(ext); 190 191 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 192} 193 194/* Sane ctype - no locale, and works with signed chars */ 195#undef isascii 196#undef isspace 197#undef isdigit 198#undef isxdigit 199#undef isalpha 200#undef isprint 201#undef isalnum 202#undef islower 203#undef isupper 204#undef tolower 205#undef toupper 206 207#ifndef NSEC_PER_MSEC 208#define NSEC_PER_MSEC 1000000L 209#endif 210 211int parse_nsec_time(const char *str, u64 *ptime); 212 213extern unsigned char sane_ctype[256]; 214#define GIT_SPACE 0x01 215#define GIT_DIGIT 0x02 216#define GIT_ALPHA 0x04 217#define GIT_GLOB_SPECIAL 0x08 218#define GIT_REGEX_SPECIAL 0x10 219#define GIT_PRINT_EXTRA 0x20 220#define GIT_PRINT 0x3E 221#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 222#define isascii(x) (((x) & ~0x7f) == 0) 223#define isspace(x) sane_istest(x,GIT_SPACE) 224#define isdigit(x) sane_istest(x,GIT_DIGIT) 225#define isxdigit(x) \ 226 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 227#define isalpha(x) sane_istest(x,GIT_ALPHA) 228#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 229#define isprint(x) sane_istest(x,GIT_PRINT) 230#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 231#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 232#define tolower(x) sane_case((unsigned char)(x), 0x20) 233#define toupper(x) sane_case((unsigned char)(x), 0) 234 235static inline int sane_case(int x, int high) 236{ 237 if (sane_istest(x, GIT_ALPHA)) 238 x = (x & ~0x20) | high; 239 return x; 240} 241 242int mkdir_p(char *path, mode_t mode); 243int copyfile(const char *from, const char *to); 244 245s64 perf_atoll(const char *str); 246char **argv_split(const char *str, int *argcp); 247void argv_free(char **argv); 248bool strglobmatch(const char *str, const char *pat); 249bool strlazymatch(const char *str, const char *pat); 250int strtailcmp(const char *s1, const char *s2); 251char *strxfrchar(char *s, char from, char to); 252unsigned long convert_unit(unsigned long value, char *unit); 253int readn(int fd, void *buf, size_t size); 254 255struct perf_event_attr; 256 257void event_attr_init(struct perf_event_attr *attr); 258 259#define _STR(x) #x 260#define STR(x) _STR(x) 261 262/* 263 * Determine whether some value is a power of two, where zero is 264 * *not* considered a power of two. 265 */ 266 267static inline __attribute__((const)) 268bool is_power_of_2(unsigned long n) 269{ 270 return (n != 0 && ((n & (n - 1)) == 0)); 271} 272 273size_t hex_width(u64 v); 274int hex2u64(const char *ptr, u64 *val); 275 276char *ltrim(char *s); 277char *rtrim(char *s); 278 279void dump_stack(void); 280 281extern unsigned int page_size; 282 283void get_term_dimensions(struct winsize *ws); 284#endif /* GIT_COMPAT_UTIL_H */ 285