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 77 extern const char *graph_line; 78 extern const char *graph_dotted_line; 79 extern char buildid_dir[]; 80 extern char tracing_events_path[]; 81 extern void perf_debugfs_set_path(const char *mountpoint); 82 const char *perf_debugfs_mount(const char *mountpoint); 83 84 /* On most systems <limits.h> would have given us this, but 85 * not on some systems (e.g. GNU/Hurd). 86 */ 87 #ifndef PATH_MAX 88 #define PATH_MAX 4096 89 #endif 90 91 #ifndef PRIuMAX 92 #define PRIuMAX "llu" 93 #endif 94 95 #ifndef PRIu32 96 #define PRIu32 "u" 97 #endif 98 99 #ifndef PRIx32 100 #define PRIx32 "x" 101 #endif 102 103 #ifndef PATH_SEP 104 #define PATH_SEP ':' 105 #endif 106 107 #ifndef STRIP_EXTENSION 108 #define STRIP_EXTENSION "" 109 #endif 110 111 #ifndef has_dos_drive_prefix 112 #define has_dos_drive_prefix(path) 0 113 #endif 114 115 #ifndef is_dir_sep 116 #define is_dir_sep(c) ((c) == '/') 117 #endif 118 119 #ifdef __GNUC__ 120 #define NORETURN __attribute__((__noreturn__)) 121 #else 122 #define NORETURN 123 #ifndef __attribute__ 124 #define __attribute__(x) 125 #endif 126 #endif 127 128 /* General helper functions */ 129 extern void usage(const char *err) NORETURN; 130 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 131 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 132 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 133 134 #include "../../../include/linux/stringify.h" 135 136 #define DIE_IF(cnd) \ 137 do { if (cnd) \ 138 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 139 __stringify(cnd) "\n"); \ 140 } while (0) 141 142 143 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 144 145 extern int prefixcmp(const char *str, const char *prefix); 146 extern void set_buildid_dir(void); 147 extern void disable_buildid_cache(void); 148 149 static inline const char *skip_prefix(const char *str, const char *prefix) 150 { 151 size_t len = strlen(prefix); 152 return strncmp(str, prefix, len) ? NULL : str + len; 153 } 154 155 #ifdef __GLIBC_PREREQ 156 #if __GLIBC_PREREQ(2, 1) 157 #define HAVE_STRCHRNUL 158 #endif 159 #endif 160 161 #ifndef HAVE_STRCHRNUL 162 #define strchrnul gitstrchrnul 163 static inline char *gitstrchrnul(const char *s, int c) 164 { 165 while (*s && *s != c) 166 s++; 167 return (char *)s; 168 } 169 #endif 170 171 /* 172 * Wrappers: 173 */ 174 extern char *xstrdup(const char *str); 175 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); 176 177 178 static inline void *zalloc(size_t size) 179 { 180 return calloc(1, size); 181 } 182 183 static inline int has_extension(const char *filename, const char *ext) 184 { 185 size_t len = strlen(filename); 186 size_t extlen = strlen(ext); 187 188 return len > extlen && !memcmp(filename + len - extlen, ext, extlen); 189 } 190 191 /* Sane ctype - no locale, and works with signed chars */ 192 #undef isascii 193 #undef isspace 194 #undef isdigit 195 #undef isxdigit 196 #undef isalpha 197 #undef isprint 198 #undef isalnum 199 #undef islower 200 #undef isupper 201 #undef tolower 202 #undef toupper 203 204 #ifndef NSEC_PER_MSEC 205 #define NSEC_PER_MSEC 1000000L 206 #endif 207 208 extern unsigned char sane_ctype[256]; 209 #define GIT_SPACE 0x01 210 #define GIT_DIGIT 0x02 211 #define GIT_ALPHA 0x04 212 #define GIT_GLOB_SPECIAL 0x08 213 #define GIT_REGEX_SPECIAL 0x10 214 #define GIT_PRINT_EXTRA 0x20 215 #define GIT_PRINT 0x3E 216 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 217 #define isascii(x) (((x) & ~0x7f) == 0) 218 #define isspace(x) sane_istest(x,GIT_SPACE) 219 #define isdigit(x) sane_istest(x,GIT_DIGIT) 220 #define isxdigit(x) \ 221 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 222 #define isalpha(x) sane_istest(x,GIT_ALPHA) 223 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 224 #define isprint(x) sane_istest(x,GIT_PRINT) 225 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 226 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 227 #define tolower(x) sane_case((unsigned char)(x), 0x20) 228 #define toupper(x) sane_case((unsigned char)(x), 0) 229 230 static inline int sane_case(int x, int high) 231 { 232 if (sane_istest(x, GIT_ALPHA)) 233 x = (x & ~0x20) | high; 234 return x; 235 } 236 237 int mkdir_p(char *path, mode_t mode); 238 int copyfile(const char *from, const char *to); 239 240 s64 perf_atoll(const char *str); 241 char **argv_split(const char *str, int *argcp); 242 void argv_free(char **argv); 243 bool strglobmatch(const char *str, const char *pat); 244 bool strlazymatch(const char *str, const char *pat); 245 int strtailcmp(const char *s1, const char *s2); 246 char *strxfrchar(char *s, char from, char to); 247 unsigned long convert_unit(unsigned long value, char *unit); 248 int readn(int fd, void *buf, size_t size); 249 250 struct perf_event_attr; 251 252 void event_attr_init(struct perf_event_attr *attr); 253 254 #define _STR(x) #x 255 #define STR(x) _STR(x) 256 257 /* 258 * Determine whether some value is a power of two, where zero is 259 * *not* considered a power of two. 260 */ 261 262 static inline __attribute__((const)) 263 bool is_power_of_2(unsigned long n) 264 { 265 return (n != 0 && ((n & (n - 1)) == 0)); 266 } 267 268 size_t hex_width(u64 v); 269 int hex2u64(const char *ptr, u64 *val); 270 271 char *ltrim(char *s); 272 char *rtrim(char *s); 273 274 void dump_stack(void); 275 276 extern unsigned int page_size; 277 278 void get_term_dimensions(struct winsize *ws); 279 #endif /* GIT_COMPAT_UTIL_H */ 280