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 93 /* On most systems <limits.h> would have given us this, but 94 * not on some systems (e.g. GNU/Hurd). 95 */ 96 #ifndef PATH_MAX 97 #define PATH_MAX 4096 98 #endif 99 100 #ifndef PRIuMAX 101 #define PRIuMAX "llu" 102 #endif 103 104 #ifndef PRIu32 105 #define PRIu32 "u" 106 #endif 107 108 #ifndef PRIx32 109 #define PRIx32 "x" 110 #endif 111 112 #ifndef PATH_SEP 113 #define PATH_SEP ':' 114 #endif 115 116 #ifndef STRIP_EXTENSION 117 #define STRIP_EXTENSION "" 118 #endif 119 120 #ifndef has_dos_drive_prefix 121 #define has_dos_drive_prefix(path) 0 122 #endif 123 124 #ifndef is_dir_sep 125 #define is_dir_sep(c) ((c) == '/') 126 #endif 127 128 #ifdef __GNUC__ 129 #define NORETURN __attribute__((__noreturn__)) 130 #else 131 #define NORETURN 132 #ifndef __attribute__ 133 #define __attribute__(x) 134 #endif 135 #endif 136 137 /* General helper functions */ 138 extern void usage(const char *err) NORETURN; 139 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 140 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 141 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 142 143 #include "../../../include/linux/stringify.h" 144 145 #define DIE_IF(cnd) \ 146 do { if (cnd) \ 147 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 148 __stringify(cnd) "\n"); \ 149 } while (0) 150 151 152 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 153 154 extern int prefixcmp(const char *str, const char *prefix); 155 156 static inline const char *skip_prefix(const char *str, const char *prefix) 157 { 158 size_t len = strlen(prefix); 159 return strncmp(str, prefix, len) ? NULL : str + len; 160 } 161 162 #ifdef __GLIBC_PREREQ 163 #if __GLIBC_PREREQ(2, 1) 164 #define HAVE_STRCHRNUL 165 #endif 166 #endif 167 168 #ifndef HAVE_STRCHRNUL 169 #define strchrnul gitstrchrnul 170 static inline char *gitstrchrnul(const char *s, int c) 171 { 172 while (*s && *s != c) 173 s++; 174 return (char *)s; 175 } 176 #endif 177 178 /* 179 * Wrappers: 180 */ 181 extern char *xstrdup(const char *str); 182 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 183 184 185 static inline void *zalloc(size_t size) 186 { 187 return calloc(1, size); 188 } 189 190 static inline int has_extension(const char *filename, const char *ext) 191 { 192 size_t len = strlen(filename); 193 size_t extlen = strlen(ext); 194 195 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 196 } 197 198 /* Sane ctype - no locale, and works with signed chars */ 199 #undef isascii 200 #undef isspace 201 #undef isdigit 202 #undef isxdigit 203 #undef isalpha 204 #undef isprint 205 #undef isalnum 206 #undef tolower 207 #undef toupper 208 209 extern unsigned char sane_ctype[256]; 210 #define GIT_SPACE 0x01 211 #define GIT_DIGIT 0x02 212 #define GIT_ALPHA 0x04 213 #define GIT_GLOB_SPECIAL 0x08 214 #define GIT_REGEX_SPECIAL 0x10 215 #define GIT_PRINT_EXTRA 0x20 216 #define GIT_PRINT 0x3E 217 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 218 #define isascii(x) (((x) & ~0x7f) == 0) 219 #define isspace(x) sane_istest(x,GIT_SPACE) 220 #define isdigit(x) sane_istest(x,GIT_DIGIT) 221 #define isxdigit(x) \ 222 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 223 #define isalpha(x) sane_istest(x,GIT_ALPHA) 224 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 225 #define isprint(x) sane_istest(x,GIT_PRINT) 226 #define tolower(x) sane_case((unsigned char)(x), 0x20) 227 #define toupper(x) sane_case((unsigned char)(x), 0) 228 229 static inline int sane_case(int x, int high) 230 { 231 if (sane_istest(x, GIT_ALPHA)) 232 x = (x & ~0x20) | high; 233 return x; 234 } 235 236 #ifndef DIR_HAS_BSD_GROUP_SEMANTICS 237 # define FORCE_DIR_SET_GID S_ISGID 238 #else 239 # define FORCE_DIR_SET_GID 0 240 #endif 241 242 #ifdef NO_NSEC 243 #undef USE_NSEC 244 #define ST_CTIME_NSEC(st) 0 245 #define ST_MTIME_NSEC(st) 0 246 #else 247 #ifdef USE_ST_TIMESPEC 248 #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) 249 #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) 250 #else 251 #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) 252 #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) 253 #endif 254 #endif 255 256 int mkdir_p(char *path, mode_t mode); 257 int copyfile(const char *from, const char *to); 258 259 s64 perf_atoll(const char *str); 260 char **argv_split(const char *str, int *argcp); 261 void argv_free(char **argv); 262 bool strglobmatch(const char *str, const char *pat); 263 bool strlazymatch(const char *str, const char *pat); 264 unsigned long convert_unit(unsigned long value, char *unit); 265 266 #ifndef ESC 267 #define ESC 27 268 #endif 269 270 static inline bool is_exit_key(int key) 271 { 272 char up; 273 if (key == CTRL('c') || key == ESC) 274 return true; 275 up = toupper(key); 276 return up == 'Q'; 277 } 278 279 #define _STR(x) #x 280 #define STR(x) _STR(x) 281 282 #endif 283