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 <inttypes.h> 73 #include <linux/magic.h> 74 #include "types.h" 75 #include <sys/ttydefaults.h> 76 77 extern const char *graph_line; 78 extern const char *graph_dotted_line; 79 extern char buildid_dir[]; 80 81 /* On most systems <limits.h> would have given us this, but 82 * not on some systems (e.g. GNU/Hurd). 83 */ 84 #ifndef PATH_MAX 85 #define PATH_MAX 4096 86 #endif 87 88 #ifndef PRIuMAX 89 #define PRIuMAX "llu" 90 #endif 91 92 #ifndef PRIu32 93 #define PRIu32 "u" 94 #endif 95 96 #ifndef PRIx32 97 #define PRIx32 "x" 98 #endif 99 100 #ifndef PATH_SEP 101 #define PATH_SEP ':' 102 #endif 103 104 #ifndef STRIP_EXTENSION 105 #define STRIP_EXTENSION "" 106 #endif 107 108 #ifndef has_dos_drive_prefix 109 #define has_dos_drive_prefix(path) 0 110 #endif 111 112 #ifndef is_dir_sep 113 #define is_dir_sep(c) ((c) == '/') 114 #endif 115 116 #ifdef __GNUC__ 117 #define NORETURN __attribute__((__noreturn__)) 118 #else 119 #define NORETURN 120 #ifndef __attribute__ 121 #define __attribute__(x) 122 #endif 123 #endif 124 125 /* General helper functions */ 126 extern void usage(const char *err) NORETURN; 127 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 128 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 129 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 130 131 #include "../../../include/linux/stringify.h" 132 133 #define DIE_IF(cnd) \ 134 do { if (cnd) \ 135 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 136 __stringify(cnd) "\n"); \ 137 } while (0) 138 139 140 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 141 142 extern int prefixcmp(const char *str, const char *prefix); 143 extern void set_buildid_dir(void); 144 extern void disable_buildid_cache(void); 145 146 static inline const char *skip_prefix(const char *str, const char *prefix) 147 { 148 size_t len = strlen(prefix); 149 return strncmp(str, prefix, len) ? NULL : str + len; 150 } 151 152 #ifdef __GLIBC_PREREQ 153 #if __GLIBC_PREREQ(2, 1) 154 #define HAVE_STRCHRNUL 155 #endif 156 #endif 157 158 #ifndef HAVE_STRCHRNUL 159 #define strchrnul gitstrchrnul 160 static inline char *gitstrchrnul(const char *s, int c) 161 { 162 while (*s && *s != c) 163 s++; 164 return (char *)s; 165 } 166 #endif 167 168 /* 169 * Wrappers: 170 */ 171 extern char *xstrdup(const char *str); 172 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 173 174 175 static inline void *zalloc(size_t size) 176 { 177 return calloc(1, size); 178 } 179 180 static inline int has_extension(const char *filename, const char *ext) 181 { 182 size_t len = strlen(filename); 183 size_t extlen = strlen(ext); 184 185 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 186 } 187 188 /* Sane ctype - no locale, and works with signed chars */ 189 #undef isascii 190 #undef isspace 191 #undef isdigit 192 #undef isxdigit 193 #undef isalpha 194 #undef isprint 195 #undef isalnum 196 #undef islower 197 #undef isupper 198 #undef tolower 199 #undef toupper 200 201 #ifndef NSEC_PER_MSEC 202 #define NSEC_PER_MSEC 1000000L 203 #endif 204 205 extern unsigned char sane_ctype[256]; 206 #define GIT_SPACE 0x01 207 #define GIT_DIGIT 0x02 208 #define GIT_ALPHA 0x04 209 #define GIT_GLOB_SPECIAL 0x08 210 #define GIT_REGEX_SPECIAL 0x10 211 #define GIT_PRINT_EXTRA 0x20 212 #define GIT_PRINT 0x3E 213 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 214 #define isascii(x) (((x) & ~0x7f) == 0) 215 #define isspace(x) sane_istest(x,GIT_SPACE) 216 #define isdigit(x) sane_istest(x,GIT_DIGIT) 217 #define isxdigit(x) \ 218 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 219 #define isalpha(x) sane_istest(x,GIT_ALPHA) 220 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 221 #define isprint(x) sane_istest(x,GIT_PRINT) 222 #define islower(x) (sane_istest(x,GIT_ALPHA) && sane_istest(x,0x20)) 223 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !sane_istest(x,0x20)) 224 #define tolower(x) sane_case((unsigned char)(x), 0x20) 225 #define toupper(x) sane_case((unsigned char)(x), 0) 226 227 static inline int sane_case(int x, int high) 228 { 229 if (sane_istest(x, GIT_ALPHA)) 230 x = (x & ~0x20) | high; 231 return x; 232 } 233 234 int mkdir_p(char *path, mode_t mode); 235 int copyfile(const char *from, const char *to); 236 237 s64 perf_atoll(const char *str); 238 char **argv_split(const char *str, int *argcp); 239 void argv_free(char **argv); 240 bool strglobmatch(const char *str, const char *pat); 241 bool strlazymatch(const char *str, const char *pat); 242 int strtailcmp(const char *s1, const char *s2); 243 char *strxfrchar(char *s, char from, char to); 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 int hex2u64(const char *ptr, u64 *val); 267 268 char *ltrim(char *s); 269 char *rtrim(char *s); 270 271 void dump_stack(void); 272 273 extern unsigned int page_size; 274 275 struct winsize; 276 void get_term_dimensions(struct winsize *ws); 277 278 #endif 279