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 _BSD_SOURCE 1 44 #define HAS_BOOL 45 46 #include <unistd.h> 47 #include <stdio.h> 48 #include <sys/stat.h> 49 #include <sys/statfs.h> 50 #include <fcntl.h> 51 #include <stdbool.h> 52 #include <stddef.h> 53 #include <stdlib.h> 54 #include <stdarg.h> 55 #include <string.h> 56 #include <errno.h> 57 #include <limits.h> 58 #include <sys/param.h> 59 #include <sys/types.h> 60 #include <dirent.h> 61 #include <sys/time.h> 62 #include <time.h> 63 #include <signal.h> 64 #include <fnmatch.h> 65 #include <assert.h> 66 #include <regex.h> 67 #include <utime.h> 68 #include <sys/wait.h> 69 #include <sys/poll.h> 70 #include <sys/socket.h> 71 #include <sys/ioctl.h> 72 #include <sys/select.h> 73 #include <netinet/in.h> 74 #include <netinet/tcp.h> 75 #include <arpa/inet.h> 76 #include <netdb.h> 77 #include <inttypes.h> 78 #include "../../../include/linux/magic.h" 79 #include "types.h" 80 #include <sys/ttydefaults.h> 81 82 extern const char *graph_line; 83 extern const char *graph_dotted_line; 84 extern char buildid_dir[]; 85 86 /* On most systems <limits.h> would have given us this, but 87 * not on some systems (e.g. GNU/Hurd). 88 */ 89 #ifndef PATH_MAX 90 #define PATH_MAX 4096 91 #endif 92 93 #ifndef PRIuMAX 94 #define PRIuMAX "llu" 95 #endif 96 97 #ifndef PRIu32 98 #define PRIu32 "u" 99 #endif 100 101 #ifndef PRIx32 102 #define PRIx32 "x" 103 #endif 104 105 #ifndef PATH_SEP 106 #define PATH_SEP ':' 107 #endif 108 109 #ifndef STRIP_EXTENSION 110 #define STRIP_EXTENSION "" 111 #endif 112 113 #ifndef has_dos_drive_prefix 114 #define has_dos_drive_prefix(path) 0 115 #endif 116 117 #ifndef is_dir_sep 118 #define is_dir_sep(c) ((c) == '/') 119 #endif 120 121 #ifdef __GNUC__ 122 #define NORETURN __attribute__((__noreturn__)) 123 #else 124 #define NORETURN 125 #ifndef __attribute__ 126 #define __attribute__(x) 127 #endif 128 #endif 129 130 /* General helper functions */ 131 extern void usage(const char *err) NORETURN; 132 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 133 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 134 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 135 136 #include "../../../include/linux/stringify.h" 137 138 #define DIE_IF(cnd) \ 139 do { if (cnd) \ 140 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 141 __stringify(cnd) "\n"); \ 142 } while (0) 143 144 145 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 146 147 extern int prefixcmp(const char *str, const char *prefix); 148 extern void set_buildid_dir(void); 149 extern void disable_buildid_cache(void); 150 151 static inline const char *skip_prefix(const char *str, const char *prefix) 152 { 153 size_t len = strlen(prefix); 154 return strncmp(str, prefix, len) ? NULL : str + len; 155 } 156 157 #ifdef __GLIBC_PREREQ 158 #if __GLIBC_PREREQ(2, 1) 159 #define HAVE_STRCHRNUL 160 #endif 161 #endif 162 163 #ifndef HAVE_STRCHRNUL 164 #define strchrnul gitstrchrnul 165 static inline char *gitstrchrnul(const char *s, int c) 166 { 167 while (*s && *s != c) 168 s++; 169 return (char *)s; 170 } 171 #endif 172 173 /* 174 * Wrappers: 175 */ 176 extern char *xstrdup(const char *str); 177 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 178 179 180 static inline void *zalloc(size_t size) 181 { 182 return calloc(1, size); 183 } 184 185 static inline int has_extension(const char *filename, const char *ext) 186 { 187 size_t len = strlen(filename); 188 size_t extlen = strlen(ext); 189 190 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 191 } 192 193 /* Sane ctype - no locale, and works with signed chars */ 194 #undef isascii 195 #undef isspace 196 #undef isdigit 197 #undef isxdigit 198 #undef isalpha 199 #undef isprint 200 #undef isalnum 201 #undef islower 202 #undef isupper 203 #undef tolower 204 #undef toupper 205 206 extern unsigned char sane_ctype[256]; 207 #define GIT_SPACE 0x01 208 #define GIT_DIGIT 0x02 209 #define GIT_ALPHA 0x04 210 #define GIT_GLOB_SPECIAL 0x08 211 #define GIT_REGEX_SPECIAL 0x10 212 #define GIT_PRINT_EXTRA 0x20 213 #define GIT_PRINT 0x3E 214 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 215 #define isascii(x) (((x) & ~0x7f) == 0) 216 #define isspace(x) sane_istest(x,GIT_SPACE) 217 #define isdigit(x) sane_istest(x,GIT_DIGIT) 218 #define isxdigit(x) \ 219 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 220 #define isalpha(x) sane_istest(x,GIT_ALPHA) 221 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 222 #define isprint(x) sane_istest(x,GIT_PRINT) 223 #define islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20)) 224 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20)) 225 #define tolower(x) sane_case((unsigned char)(x), 0x20) 226 #define toupper(x) sane_case((unsigned char)(x), 0) 227 228 static inline int sane_case(int x, int high) 229 { 230 if (sane_istest(x, GIT_ALPHA)) 231 x = (x & ~0x20) | high; 232 return x; 233 } 234 235 int mkdir_p(char *path, mode_t mode); 236 int copyfile(const char *from, const char *to); 237 238 s64 perf_atoll(const char *str); 239 char **argv_split(const char *str, int *argcp); 240 void argv_free(char **argv); 241 bool strglobmatch(const char *str, const char *pat); 242 bool strlazymatch(const char *str, const char *pat); 243 int strtailcmp(const char *s1, const char *s2); 244 unsigned long convert_unit(unsigned long value, char *unit); 245 int readn(int fd, void *buf, size_t size); 246 247 struct perf_event_attr; 248 249 void event_attr_init(struct perf_event_attr *attr); 250 251 #define _STR(x) #x 252 #define STR(x) _STR(x) 253 254 /* 255 * Determine whether some value is a power of two, where zero is 256 * *not* considered a power of two. 257 */ 258 259 static inline __attribute__((const)) 260 bool is_power_of_2(unsigned long n) 261 { 262 return (n != 0 && ((n & (n - 1)) == 0)); 263 } 264 265 size_t hex_width(u64 v); 266 267 char *rtrim(char *s); 268 269 #endif 270