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 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ 43 #define _DEFAULT_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 <term.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 <poll.h> 71 #include <sys/socket.h> 72 #include <sys/ioctl.h> 73 #include <inttypes.h> 74 #include <linux/kernel.h> 75 #include <linux/magic.h> 76 #include <linux/types.h> 77 #include <sys/ttydefaults.h> 78 #include <api/fs/tracing_path.h> 79 #include <termios.h> 80 #include <linux/bitops.h> 81 #include <termios.h> 82 #include "strlist.h" 83 84 extern const char *graph_line; 85 extern const char *graph_dotted_line; 86 extern const char *spaces; 87 extern const char *dots; 88 extern char buildid_dir[]; 89 90 /* On most systems <limits.h> would have given us this, but 91 * not on some systems (e.g. GNU/Hurd). 92 */ 93 #ifndef PATH_MAX 94 #define PATH_MAX 4096 95 #endif 96 97 #ifndef PRIuMAX 98 #define PRIuMAX "llu" 99 #endif 100 101 #ifndef PRIu32 102 #define PRIu32 "u" 103 #endif 104 105 #ifndef PRIx32 106 #define PRIx32 "x" 107 #endif 108 109 #ifndef PATH_SEP 110 #define PATH_SEP ':' 111 #endif 112 113 #ifndef STRIP_EXTENSION 114 #define STRIP_EXTENSION "" 115 #endif 116 117 #ifndef has_dos_drive_prefix 118 #define has_dos_drive_prefix(path) 0 119 #endif 120 121 #ifndef is_dir_sep 122 #define is_dir_sep(c) ((c) == '/') 123 #endif 124 125 #ifdef __GNUC__ 126 #define NORETURN __attribute__((__noreturn__)) 127 #else 128 #define NORETURN 129 #ifndef __attribute__ 130 #define __attribute__(x) 131 #endif 132 #endif 133 134 #define PERF_GTK_DSO "libperf-gtk.so" 135 136 /* General helper functions */ 137 void usage(const char *err) NORETURN; 138 void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 139 int error(const char *err, ...) __attribute__((format (printf, 1, 2))); 140 void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 141 142 void set_warning_routine(void (*routine)(const char *err, va_list params)); 143 144 int prefixcmp(const char *str, const char *prefix); 145 void set_buildid_dir(const char *dir); 146 147 #ifdef __GLIBC_PREREQ 148 #if __GLIBC_PREREQ(2, 1) 149 #define HAVE_STRCHRNUL 150 #endif 151 #endif 152 153 #ifndef HAVE_STRCHRNUL 154 #define strchrnul gitstrchrnul 155 static inline char *gitstrchrnul(const char *s, int c) 156 { 157 while (*s && *s != c) 158 s++; 159 return (char *)s; 160 } 161 #endif 162 163 static inline void *zalloc(size_t size) 164 { 165 return calloc(1, size); 166 } 167 168 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) 169 170 /* Sane ctype - no locale, and works with signed chars */ 171 #undef isascii 172 #undef isspace 173 #undef isdigit 174 #undef isxdigit 175 #undef isalpha 176 #undef isprint 177 #undef isalnum 178 #undef islower 179 #undef isupper 180 #undef tolower 181 #undef toupper 182 183 #ifndef NSEC_PER_MSEC 184 #define NSEC_PER_MSEC 1000000L 185 #endif 186 187 int parse_nsec_time(const char *str, u64 *ptime); 188 189 extern unsigned char sane_ctype[256]; 190 #define GIT_SPACE 0x01 191 #define GIT_DIGIT 0x02 192 #define GIT_ALPHA 0x04 193 #define GIT_GLOB_SPECIAL 0x08 194 #define GIT_REGEX_SPECIAL 0x10 195 #define GIT_PRINT_EXTRA 0x20 196 #define GIT_PRINT 0x3E 197 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) 198 #define isascii(x) (((x) & ~0x7f) == 0) 199 #define isspace(x) sane_istest(x,GIT_SPACE) 200 #define isdigit(x) sane_istest(x,GIT_DIGIT) 201 #define isxdigit(x) \ 202 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') 203 #define isalpha(x) sane_istest(x,GIT_ALPHA) 204 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) 205 #define isprint(x) sane_istest(x,GIT_PRINT) 206 #define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20)) 207 #define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20)) 208 #define tolower(x) sane_case((unsigned char)(x), 0x20) 209 #define toupper(x) sane_case((unsigned char)(x), 0) 210 211 static inline int sane_case(int x, int high) 212 { 213 if (sane_istest(x, GIT_ALPHA)) 214 x = (x & ~0x20) | high; 215 return x; 216 } 217 218 int mkdir_p(char *path, mode_t mode); 219 int rm_rf(char *path); 220 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 221 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 222 int copyfile(const char *from, const char *to); 223 int copyfile_mode(const char *from, const char *to, mode_t mode); 224 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size); 225 226 s64 perf_atoll(const char *str); 227 char **argv_split(const char *str, int *argcp); 228 void argv_free(char **argv); 229 bool strglobmatch(const char *str, const char *pat); 230 bool strlazymatch(const char *str, const char *pat); 231 static inline bool strisglob(const char *str) 232 { 233 return strpbrk(str, "*?[") != NULL; 234 } 235 int strtailcmp(const char *s1, const char *s2); 236 char *strxfrchar(char *s, char from, char to); 237 unsigned long convert_unit(unsigned long value, char *unit); 238 ssize_t readn(int fd, void *buf, size_t n); 239 ssize_t writen(int fd, void *buf, size_t n); 240 241 struct perf_event_attr; 242 243 void event_attr_init(struct perf_event_attr *attr); 244 245 #define _STR(x) #x 246 #define STR(x) _STR(x) 247 248 size_t hex_width(u64 v); 249 int hex2u64(const char *ptr, u64 *val); 250 251 char *ltrim(char *s); 252 char *rtrim(char *s); 253 254 static inline char *trim(char *s) 255 { 256 return ltrim(rtrim(s)); 257 } 258 259 void dump_stack(void); 260 void sighandler_dump_stack(int sig); 261 262 extern unsigned int page_size; 263 extern int cacheline_size; 264 extern int sysctl_perf_event_max_stack; 265 extern int sysctl_perf_event_max_contexts_per_stack; 266 267 struct parse_tag { 268 char tag; 269 int mult; 270 }; 271 272 unsigned long parse_tag_value(const char *str, struct parse_tag *tags); 273 274 #define SRCLINE_UNKNOWN ((char *) "??:0") 275 276 static inline int path__join(char *bf, size_t size, 277 const char *path1, const char *path2) 278 { 279 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2); 280 } 281 282 static inline int path__join3(char *bf, size_t size, 283 const char *path1, const char *path2, 284 const char *path3) 285 { 286 return scnprintf(bf, size, "%s%s%s%s%s", 287 path1, path1[0] ? "/" : "", 288 path2, path2[0] ? "/" : "", path3); 289 } 290 291 struct dso; 292 struct symbol; 293 294 extern bool srcline_full_filename; 295 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 296 bool show_sym); 297 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym, 298 bool show_sym, bool unwind_inlines); 299 void free_srcline(char *srcline); 300 301 int perf_event_paranoid(void); 302 303 void mem_bswap_64(void *src, int byte_size); 304 void mem_bswap_32(void *src, int byte_size); 305 306 const char *get_filename_for_perf_kvm(void); 307 bool find_process(const char *name); 308 309 #ifdef HAVE_ZLIB_SUPPORT 310 int gzip_decompress_to_file(const char *input, int output_fd); 311 #endif 312 313 #ifdef HAVE_LZMA_SUPPORT 314 int lzma_decompress_to_file(const char *input, int output_fd); 315 #endif 316 317 char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints); 318 319 static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints) 320 { 321 return asprintf_expr_inout_ints(var, true, nints, ints); 322 } 323 324 static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints) 325 { 326 return asprintf_expr_inout_ints(var, false, nints, ints); 327 } 328 329 int get_stack_size(const char *str, unsigned long *_size); 330 331 int fetch_kernel_version(unsigned int *puint, 332 char *str, size_t str_sz); 333 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 334 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 335 #define KVER_SUBLEVEL(x) ((x) & 0xff) 336 #define KVER_FMT "%d.%d.%d" 337 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 338 339 const char *perf_tip(const char *dirpath); 340 bool is_regular_file(const char *file); 341 int fetch_current_timestamp(char *buf, size_t sz); 342 343 enum binary_printer_ops { 344 BINARY_PRINT_DATA_BEGIN, 345 BINARY_PRINT_LINE_BEGIN, 346 BINARY_PRINT_ADDR, 347 BINARY_PRINT_NUM_DATA, 348 BINARY_PRINT_NUM_PAD, 349 BINARY_PRINT_SEP, 350 BINARY_PRINT_CHAR_DATA, 351 BINARY_PRINT_CHAR_PAD, 352 BINARY_PRINT_LINE_END, 353 BINARY_PRINT_DATA_END, 354 }; 355 356 typedef void (*print_binary_t)(enum binary_printer_ops, 357 unsigned int val, 358 void *extra); 359 360 void print_binary(unsigned char *data, size_t len, 361 size_t bytes_per_line, print_binary_t printer, 362 void *extra); 363 #endif /* GIT_COMPAT_UTIL_H */ 364