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