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07800601 IM |
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 | ||
07800601 IM |
42 | #define _ALL_SOURCE 1 |
43 | #define _GNU_SOURCE 1 | |
44 | #define _BSD_SOURCE 1 | |
e206d556 | 45 | #define HAS_BOOL |
07800601 IM |
46 | |
47 | #include <unistd.h> | |
48 | #include <stdio.h> | |
49 | #include <sys/stat.h> | |
f6bdafef | 50 | #include <sys/statfs.h> |
07800601 | 51 | #include <fcntl.h> |
e206d556 | 52 | #include <stdbool.h> |
07800601 IM |
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> | |
07800601 IM |
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> | |
f6bdafef | 82 | #include "../../../include/linux/magic.h" |
e206d556 | 83 | #include "types.h" |
07800601 | 84 | |
1fe2c106 | 85 | |
07800601 IM |
86 | #ifndef NO_ICONV |
87 | #include <iconv.h> | |
88 | #endif | |
89 | ||
2890284b ACM |
90 | extern const char *graph_line; |
91 | extern const char *graph_dotted_line; | |
92 | ||
07800601 IM |
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 | ||
9769833b MH |
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 | ||
07800601 IM |
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 | extern time_t tm_to_time_t(const struct tm *tm); | |
156 | ||
157 | static inline const char *skip_prefix(const char *str, const char *prefix) | |
158 | { | |
159 | size_t len = strlen(prefix); | |
160 | return strncmp(str, prefix, len) ? NULL : str + len; | |
161 | } | |
162 | ||
163 | #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) | |
164 | ||
165 | #ifndef PROT_READ | |
166 | #define PROT_READ 1 | |
167 | #define PROT_WRITE 2 | |
168 | #define MAP_PRIVATE 1 | |
169 | #define MAP_FAILED ((void*)-1) | |
170 | #endif | |
171 | ||
172 | #define mmap git_mmap | |
173 | #define munmap git_munmap | |
174 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
175 | extern int git_munmap(void *start, size_t length); | |
176 | ||
177 | #else /* NO_MMAP || USE_WIN32_MMAP */ | |
178 | ||
179 | #include <sys/mman.h> | |
180 | ||
181 | #endif /* NO_MMAP || USE_WIN32_MMAP */ | |
182 | ||
183 | #ifdef NO_MMAP | |
184 | ||
185 | /* This value must be multiple of (pagesize * 2) */ | |
186 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) | |
187 | ||
188 | #else /* NO_MMAP */ | |
189 | ||
190 | /* This value must be multiple of (pagesize * 2) */ | |
191 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ | |
192 | (sizeof(void*) >= 8 \ | |
193 | ? 1 * 1024 * 1024 * 1024 \ | |
194 | : 32 * 1024 * 1024) | |
195 | ||
196 | #endif /* NO_MMAP */ | |
197 | ||
198 | #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT | |
199 | #define on_disk_bytes(st) ((st).st_size) | |
200 | #else | |
201 | #define on_disk_bytes(st) ((st).st_blocks * 512) | |
202 | #endif | |
203 | ||
204 | #define DEFAULT_PACKED_GIT_LIMIT \ | |
205 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) | |
206 | ||
207 | #ifdef NO_PREAD | |
208 | #define pread git_pread | |
209 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
210 | #endif | |
211 | /* | |
212 | * Forward decl that will remind us if its twin in cache.h changes. | |
213 | * This function is used in compat/pread.c. But we can't include | |
214 | * cache.h there. | |
215 | */ | |
216 | extern ssize_t read_in_full(int fd, void *buf, size_t count); | |
217 | ||
218 | #ifdef NO_SETENV | |
219 | #define setenv gitsetenv | |
220 | extern int gitsetenv(const char *, const char *, int); | |
221 | #endif | |
222 | ||
223 | #ifdef NO_MKDTEMP | |
224 | #define mkdtemp gitmkdtemp | |
225 | extern char *gitmkdtemp(char *); | |
226 | #endif | |
227 | ||
228 | #ifdef NO_UNSETENV | |
229 | #define unsetenv gitunsetenv | |
230 | extern void gitunsetenv(const char *); | |
231 | #endif | |
232 | ||
233 | #ifdef NO_STRCASESTR | |
234 | #define strcasestr gitstrcasestr | |
235 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
236 | #endif | |
237 | ||
238 | #ifdef NO_STRLCPY | |
239 | #define strlcpy gitstrlcpy | |
240 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
241 | #endif | |
242 | ||
243 | #ifdef NO_STRTOUMAX | |
244 | #define strtoumax gitstrtoumax | |
245 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
246 | #endif | |
247 | ||
248 | #ifdef NO_HSTRERROR | |
249 | #define hstrerror githstrerror | |
250 | extern const char *githstrerror(int herror); | |
251 | #endif | |
252 | ||
253 | #ifdef NO_MEMMEM | |
254 | #define memmem gitmemmem | |
255 | void *gitmemmem(const void *haystack, size_t haystacklen, | |
256 | const void *needle, size_t needlelen); | |
257 | #endif | |
258 | ||
259 | #ifdef FREAD_READS_DIRECTORIES | |
260 | #ifdef fopen | |
261 | #undef fopen | |
262 | #endif | |
263 | #define fopen(a,b) git_fopen(a,b) | |
264 | extern FILE *git_fopen(const char*, const char*); | |
265 | #endif | |
266 | ||
267 | #ifdef SNPRINTF_RETURNS_BOGUS | |
268 | #define snprintf git_snprintf | |
269 | extern int git_snprintf(char *str, size_t maxsize, | |
270 | const char *format, ...); | |
271 | #define vsnprintf git_vsnprintf | |
272 | extern int git_vsnprintf(char *str, size_t maxsize, | |
273 | const char *format, va_list ap); | |
274 | #endif | |
275 | ||
276 | #ifdef __GLIBC_PREREQ | |
277 | #if __GLIBC_PREREQ(2, 1) | |
278 | #define HAVE_STRCHRNUL | |
279 | #endif | |
280 | #endif | |
281 | ||
282 | #ifndef HAVE_STRCHRNUL | |
283 | #define strchrnul gitstrchrnul | |
284 | static inline char *gitstrchrnul(const char *s, int c) | |
285 | { | |
286 | while (*s && *s != c) | |
287 | s++; | |
288 | return (char *)s; | |
289 | } | |
290 | #endif | |
291 | ||
6f06ccbc IM |
292 | /* |
293 | * Wrappers: | |
294 | */ | |
295 | extern char *xstrdup(const char *str); | |
727dad10 | 296 | extern void *xmalloc(size_t size) __attribute__((weak)); |
6f06ccbc IM |
297 | extern void *xmemdupz(const void *data, size_t len); |
298 | extern char *xstrndup(const char *str, size_t len); | |
727dad10 | 299 | extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); |
16f762a2 | 300 | |
a1d37d52 MH |
301 | static inline void *xzalloc(size_t size) |
302 | { | |
303 | void *buf = xmalloc(size); | |
304 | ||
305 | return memset(buf, 0, size); | |
306 | } | |
307 | ||
36479484 ACM |
308 | static inline void *zalloc(size_t size) |
309 | { | |
310 | return calloc(1, size); | |
311 | } | |
312 | ||
07800601 IM |
313 | static inline size_t xsize_t(off_t len) |
314 | { | |
315 | return (size_t)len; | |
316 | } | |
317 | ||
318 | static inline int has_extension(const char *filename, const char *ext) | |
319 | { | |
320 | size_t len = strlen(filename); | |
321 | size_t extlen = strlen(ext); | |
a1d37d52 | 322 | |
07800601 IM |
323 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
324 | } | |
325 | ||
326 | /* Sane ctype - no locale, and works with signed chars */ | |
327 | #undef isascii | |
328 | #undef isspace | |
329 | #undef isdigit | |
9e827dd0 | 330 | #undef isxdigit |
07800601 | 331 | #undef isalpha |
5f9c39dc | 332 | #undef isprint |
07800601 IM |
333 | #undef isalnum |
334 | #undef tolower | |
335 | #undef toupper | |
a1d37d52 | 336 | |
07800601 | 337 | extern unsigned char sane_ctype[256]; |
a73c7d84 PZ |
338 | #define GIT_SPACE 0x01 |
339 | #define GIT_DIGIT 0x02 | |
340 | #define GIT_ALPHA 0x04 | |
341 | #define GIT_GLOB_SPECIAL 0x08 | |
342 | #define GIT_REGEX_SPECIAL 0x10 | |
343 | #define GIT_PRINT_EXTRA 0x20 | |
344 | #define GIT_PRINT 0x3E | |
07800601 IM |
345 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) |
346 | #define isascii(x) (((x) & ~0x7f) == 0) | |
347 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
348 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
9e827dd0 FW |
349 | #define isxdigit(x) \ |
350 | (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') | |
07800601 IM |
351 | #define isalpha(x) sane_istest(x,GIT_ALPHA) |
352 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
a73c7d84 | 353 | #define isprint(x) sane_istest(x,GIT_PRINT) |
07800601 IM |
354 | #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) |
355 | #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) | |
356 | #define tolower(x) sane_case((unsigned char)(x), 0x20) | |
357 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
358 | ||
359 | static inline int sane_case(int x, int high) | |
360 | { | |
361 | if (sane_istest(x, GIT_ALPHA)) | |
362 | x = (x & ~0x20) | high; | |
363 | return x; | |
364 | } | |
365 | ||
366 | static inline int strtoul_ui(char const *s, int base, unsigned int *result) | |
367 | { | |
368 | unsigned long ul; | |
369 | char *p; | |
370 | ||
371 | errno = 0; | |
372 | ul = strtoul(s, &p, base); | |
373 | if (errno || *p || p == s || (unsigned int) ul != ul) | |
374 | return -1; | |
375 | *result = ul; | |
376 | return 0; | |
377 | } | |
378 | ||
379 | static inline int strtol_i(char const *s, int base, int *result) | |
380 | { | |
381 | long ul; | |
382 | char *p; | |
383 | ||
384 | errno = 0; | |
385 | ul = strtol(s, &p, base); | |
386 | if (errno || *p || p == s || (int) ul != ul) | |
387 | return -1; | |
388 | *result = ul; | |
389 | return 0; | |
390 | } | |
391 | ||
392 | #ifdef INTERNAL_QSORT | |
393 | void git_qsort(void *base, size_t nmemb, size_t size, | |
394 | int(*compar)(const void *, const void *)); | |
395 | #define qsort git_qsort | |
396 | #endif | |
397 | ||
398 | #ifndef DIR_HAS_BSD_GROUP_SEMANTICS | |
399 | # define FORCE_DIR_SET_GID S_ISGID | |
400 | #else | |
401 | # define FORCE_DIR_SET_GID 0 | |
402 | #endif | |
403 | ||
404 | #ifdef NO_NSEC | |
405 | #undef USE_NSEC | |
406 | #define ST_CTIME_NSEC(st) 0 | |
407 | #define ST_MTIME_NSEC(st) 0 | |
408 | #else | |
409 | #ifdef USE_ST_TIMESPEC | |
410 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) | |
411 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) | |
412 | #else | |
413 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) | |
414 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) | |
415 | #endif | |
416 | #endif | |
417 | ||
4cf40131 ACM |
418 | int mkdir_p(char *path, mode_t mode); |
419 | int copyfile(const char *from, const char *to); | |
420 | ||
e206d556 ACM |
421 | s64 perf_atoll(const char *str); |
422 | char **argv_split(const char *str, int *argcp); | |
423 | void argv_free(char **argv); | |
424 | bool strglobmatch(const char *str, const char *pat); | |
425 | bool strlazymatch(const char *str, const char *pat); | |
426 | ||
427 | #define _STR(x) #x | |
428 | #define STR(x) _STR(x) | |
429 | ||
07800601 | 430 | #endif |