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Commit | Line | Data |
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4050c0df JH |
1 | #ifndef GIT_COMPAT_UTIL_H |
2 | #define GIT_COMPAT_UTIL_H | |
3 | ||
b97e9116 MW |
4 | #define _FILE_OFFSET_BITS 64 |
5 | ||
8f1d2e6f | 6 | #ifndef FLEX_ARRAY |
8e973991 JH |
7 | /* |
8 | * See if our compiler is known to support flexible array members. | |
9 | */ | |
203ee91f | 10 | #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580)) |
8e973991 JH |
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 | |
8f1d2e6f JH |
25 | #endif |
26 | #endif | |
27 | ||
b4f2a6ac | 28 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
f630cfda | 29 | #define bitsizeof(x) (CHAR_BIT * sizeof(x)) |
b4f2a6ac | 30 | |
c03c8315 EFL |
31 | #define maximum_signed_value_of_type(a) \ |
32 | (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a))) | |
33 | ||
1368f650 JN |
34 | #define maximum_unsigned_value_of_type(a) \ |
35 | (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a))) | |
36 | ||
c03c8315 EFL |
37 | /* |
38 | * Signed integer overflow is undefined in C, so here's a helper macro | |
39 | * to detect if the sum of two integers will overflow. | |
40 | * | |
41 | * Requires: a >= 0, typeof(a) equals typeof(b) | |
42 | */ | |
43 | #define signed_add_overflows(a, b) \ | |
44 | ((b) > maximum_signed_value_of_type(a) - (a)) | |
45 | ||
1368f650 JN |
46 | #define unsigned_add_overflows(a, b) \ |
47 | ((b) > maximum_unsigned_value_of_type(a) - (a)) | |
48 | ||
8723f216 NP |
49 | #ifdef __GNUC__ |
50 | #define TYPEOF(x) (__typeof__(x)) | |
51 | #else | |
52 | #define TYPEOF(x) | |
53 | #endif | |
54 | ||
f630cfda | 55 | #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits)))) |
db7244bd | 56 | #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ |
8723f216 | 57 | |
98cb6f30 PH |
58 | #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) |
59 | ||
cf606e3d AW |
60 | /* Approximation of the length of the decimal representation of this type. */ |
61 | #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) | |
62 | ||
4cb18a49 BC |
63 | #if defined(__sun__) |
64 | /* | |
65 | * On Solaris, when _XOPEN_EXTENDED is set, its header file | |
66 | * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE | |
67 | * setting to say we are XPG5 or XPG6. Also on Solaris, | |
68 | * XPG6 programs must be compiled with a c99 compiler, while | |
69 | * non XPG6 programs must be compiled with a pre-c99 compiler. | |
70 | */ | |
71 | # if __STDC_VERSION__ - 0 >= 199901L | |
72 | # define _XOPEN_SOURCE 600 | |
73 | # else | |
74 | # define _XOPEN_SOURCE 500 | |
75 | # endif | |
6555b196 | 76 | #elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \ |
6c109904 | 77 | !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \ |
92164af9 | 78 | !defined(__TANDEM) && !defined(__QNX__) && !defined(__MirBSD__) |
85023577 JH |
79 | #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ |
80 | #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ | |
c902c9a6 | 81 | #endif |
fb952206 JR |
82 | #define _ALL_SOURCE 1 |
83 | #define _GNU_SOURCE 1 | |
84 | #define _BSD_SOURCE 1 | |
9a695fbf | 85 | #define _NETBSD_SOURCE 1 |
9398b859 | 86 | #define _SGI_SOURCE 1 |
85023577 | 87 | |
380395d0 | 88 | #if defined(WIN32) && !defined(__CYGWIN__) /* Both MinGW and MSVC */ |
8453c125 | 89 | # if defined (_MSC_VER) && !defined(_WIN32_WINNT) |
41f29991 RJ |
90 | # define _WIN32_WINNT 0x0502 |
91 | # endif | |
435bdf8c MSO |
92 | #define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */ |
93 | #include <winsock2.h> | |
94 | #include <windows.h> | |
380395d0 | 95 | #define GIT_WINDOWS_NATIVE |
435bdf8c MSO |
96 | #endif |
97 | ||
4050c0df JH |
98 | #include <unistd.h> |
99 | #include <stdio.h> | |
100 | #include <sys/stat.h> | |
101 | #include <fcntl.h> | |
102 | #include <stddef.h> | |
103 | #include <stdlib.h> | |
104 | #include <stdarg.h> | |
105 | #include <string.h> | |
b3e103da | 106 | #ifdef HAVE_STRINGS_H |
6c109904 JS |
107 | #include <strings.h> /* for strcasecmp() */ |
108 | #endif | |
4050c0df JH |
109 | #include <errno.h> |
110 | #include <limits.h> | |
b2d05e06 | 111 | #ifdef NEEDS_SYS_PARAM_H |
4050c0df | 112 | #include <sys/param.h> |
6ede7205 | 113 | #endif |
4050c0df JH |
114 | #include <sys/types.h> |
115 | #include <dirent.h> | |
85023577 JH |
116 | #include <sys/time.h> |
117 | #include <time.h> | |
118 | #include <signal.h> | |
f4626df5 JS |
119 | #include <assert.h> |
120 | #include <regex.h> | |
121 | #include <utime.h> | |
088d8802 | 122 | #include <syslog.h> |
2844923d | 123 | #ifndef NO_SYS_POLL_H |
fdc12114 | 124 | #include <sys/poll.h> |
2844923d MD |
125 | #else |
126 | #include <poll.h> | |
127 | #endif | |
2f0aaaf9 | 128 | |
cfc755d3 VR |
129 | #if defined(__MINGW32__) |
130 | /* pull in Windows compatibility stuff */ | |
131 | #include "compat/mingw.h" | |
132 | #elif defined(_MSC_VER) | |
133 | #include "compat/msvc.h" | |
134 | #else | |
f4626df5 | 135 | #include <sys/wait.h> |
ebae9ff9 | 136 | #include <sys/resource.h> |
85023577 | 137 | #include <sys/socket.h> |
80bbe72b | 138 | #include <sys/ioctl.h> |
eb80042c | 139 | #include <termios.h> |
2600973f | 140 | #ifndef NO_SYS_SELECT_H |
80bbe72b | 141 | #include <sys/select.h> |
2600973f | 142 | #endif |
85023577 JH |
143 | #include <netinet/in.h> |
144 | #include <netinet/tcp.h> | |
145 | #include <arpa/inet.h> | |
146 | #include <netdb.h> | |
147 | #include <pwd.h> | |
e2770979 | 148 | #include <sys/un.h> |
2844923d | 149 | #ifndef NO_INTTYPES_H |
007e2ba6 | 150 | #include <inttypes.h> |
2844923d MD |
151 | #else |
152 | #include <stdint.h> | |
153 | #endif | |
6c109904 JS |
154 | #ifdef NO_INTPTR_T |
155 | /* | |
156 | * On I16LP32, ILP32 and LP64 "long" is the save bet, however | |
157 | * on LLP86, IL33LLP64 and P64 it needs to be "long long", | |
158 | * while on IP16 and IP16L32 it is "int" (resp. "short") | |
159 | * Size needs to match (or exceed) 'sizeof(void *)'. | |
160 | * We can't take "long long" here as not everybody has it. | |
161 | */ | |
162 | typedef long intptr_t; | |
163 | typedef unsigned long uintptr_t; | |
164 | #endif | |
41b20017 RJ |
165 | #if defined(__CYGWIN__) |
166 | #undef _XOPEN_SOURCE | |
167 | #include <grp.h> | |
168 | #define _XOPEN_SOURCE 600 | |
169 | #else | |
fb952206 | 170 | #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ |
85023577 | 171 | #include <grp.h> |
fb952206 | 172 | #define _ALL_SOURCE 1 |
41b20017 | 173 | #endif |
d75f8e61 | 174 | #endif |
85023577 | 175 | |
76759c7d TB |
176 | /* used on Mac OS X */ |
177 | #ifdef PRECOMPOSE_UNICODE | |
178 | #include "compat/precompose_utf8.h" | |
179 | #else | |
180 | #define precompose_str(in,i_nfd2nfc) | |
181 | #define precompose_argv(c,v) | |
182 | #define probe_utf8_pathname_composition(a,b) | |
183 | #endif | |
184 | ||
0539ecfd JS |
185 | #ifdef MKDIR_WO_TRAILING_SLASH |
186 | #define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b)) | |
187 | extern int compat_mkdir_wo_trailing_slash(const char*, mode_t); | |
188 | #endif | |
189 | ||
7f9e848c JS |
190 | #ifdef NO_STRUCT_ITIMERVAL |
191 | struct itimerval { | |
192 | struct timeval it_interval; | |
193 | struct timeval it_value; | |
194 | } | |
195 | #endif | |
196 | ||
197 | #ifdef NO_SETITIMER | |
198 | #define setitimer(which,value,ovalue) | |
199 | #endif | |
200 | ||
e1c06886 DA |
201 | #ifndef NO_LIBGEN_H |
202 | #include <libgen.h> | |
203 | #else | |
204 | #define basename gitbasename | |
205 | extern char *gitbasename(char *); | |
206 | #endif | |
207 | ||
85023577 JH |
208 | #ifndef NO_ICONV |
209 | #include <iconv.h> | |
210 | #endif | |
4050c0df | 211 | |
684ec6c6 RS |
212 | #ifndef NO_OPENSSL |
213 | #include <openssl/ssl.h> | |
214 | #include <openssl/err.h> | |
215 | #endif | |
216 | ||
3b130ade DM |
217 | /* On most systems <netdb.h> would have given us this, but |
218 | * not on some systems (e.g. z/OS). | |
219 | */ | |
220 | #ifndef NI_MAXHOST | |
221 | #define NI_MAXHOST 1025 | |
222 | #endif | |
223 | ||
224 | #ifndef NI_MAXSERV | |
225 | #define NI_MAXSERV 32 | |
226 | #endif | |
227 | ||
d0c2449f JH |
228 | /* On most systems <limits.h> would have given us this, but |
229 | * not on some systems (e.g. GNU/Hurd). | |
230 | */ | |
231 | #ifndef PATH_MAX | |
232 | #define PATH_MAX 4096 | |
233 | #endif | |
234 | ||
c4001d92 SP |
235 | #ifndef PRIuMAX |
236 | #define PRIuMAX "llu" | |
237 | #endif | |
238 | ||
607bb3ff JS |
239 | #ifndef PRIu32 |
240 | #define PRIu32 "u" | |
241 | #endif | |
242 | ||
243 | #ifndef PRIx32 | |
244 | #define PRIx32 "x" | |
245 | #endif | |
246 | ||
5418d96d RJ |
247 | #ifndef PRIo32 |
248 | #define PRIo32 "o" | |
249 | #endif | |
250 | ||
80ba074f JS |
251 | #ifndef PATH_SEP |
252 | #define PATH_SEP ':' | |
253 | #endif | |
254 | ||
cb6a22c0 CW |
255 | #ifdef HAVE_PATHS_H |
256 | #include <paths.h> | |
257 | #endif | |
258 | #ifndef _PATH_DEFPATH | |
259 | #define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin" | |
260 | #endif | |
261 | ||
23326d14 JS |
262 | #ifndef STRIP_EXTENSION |
263 | #define STRIP_EXTENSION "" | |
264 | #endif | |
265 | ||
25fe217b JS |
266 | #ifndef has_dos_drive_prefix |
267 | #define has_dos_drive_prefix(path) 0 | |
268 | #endif | |
269 | ||
c2369bdf CZ |
270 | #ifndef offset_1st_component |
271 | #define offset_1st_component(path) (is_dir_sep((path)[0])) | |
272 | #endif | |
273 | ||
25fe217b JS |
274 | #ifndef is_dir_sep |
275 | #define is_dir_sep(c) ((c) == '/') | |
276 | #endif | |
277 | ||
d1c69255 TN |
278 | #ifndef find_last_dir_sep |
279 | #define find_last_dir_sep(path) strrchr(path, '/') | |
280 | #endif | |
281 | ||
e4ac953b | 282 | #if defined(__HP_cc) && (__HP_cc >= 61000) |
b6ab349b MR |
283 | #define NORETURN __attribute__((noreturn)) |
284 | #define NORETURN_PTR | |
6520c846 | 285 | #elif defined(__GNUC__) && !defined(NO_NORETURN) |
4050c0df | 286 | #define NORETURN __attribute__((__noreturn__)) |
18660bc9 | 287 | #define NORETURN_PTR __attribute__((__noreturn__)) |
aba7dea8 RJ |
288 | #elif defined(_MSC_VER) |
289 | #define NORETURN __declspec(noreturn) | |
290 | #define NORETURN_PTR | |
4050c0df JH |
291 | #else |
292 | #define NORETURN | |
18660bc9 | 293 | #define NORETURN_PTR |
8cd7ebc8 | 294 | #ifndef __GNUC__ |
4050c0df JH |
295 | #ifndef __attribute__ |
296 | #define __attribute__(x) | |
297 | #endif | |
298 | #endif | |
8cd7ebc8 | 299 | #endif |
4050c0df | 300 | |
9fe3edc4 RJ |
301 | /* The sentinel attribute is valid from gcc version 4.0 */ |
302 | #if defined(__GNUC__) && (__GNUC__ >= 4) | |
303 | #define LAST_ARG_MUST_BE_NULL __attribute__((sentinel)) | |
304 | #else | |
305 | #define LAST_ARG_MUST_BE_NULL | |
306 | #endif | |
307 | ||
51ea5519 NP |
308 | #include "compat/bswap.h" |
309 | ||
cebcab18 | 310 | #include "wildmatch.h" |
cebcab18 | 311 | |
4050c0df | 312 | /* General helper functions */ |
ebaa79f4 | 313 | extern void vreportf(const char *prefix, const char *err, va_list params); |
3bc4181f | 314 | extern void vwritef(int fd, const char *prefix, const char *err, va_list params); |
a4f3131c | 315 | extern NORETURN void usage(const char *err); |
64b1cb74 | 316 | extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2))); |
a4f3131c EFL |
317 | extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2))); |
318 | extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
4050c0df | 319 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); |
46efd2d9 | 320 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); |
4050c0df | 321 | |
f2be034c BG |
322 | #ifndef NO_OPENSSL |
323 | #ifdef APPLE_COMMON_CRYPTO | |
324 | #include "compat/apple-common-crypto.h" | |
325 | #else | |
326 | #include <openssl/evp.h> | |
327 | #include <openssl/hmac.h> | |
328 | #endif /* APPLE_COMMON_CRYPTO */ | |
329 | #include <openssl/x509v3.h> | |
330 | #endif /* NO_OPENSSL */ | |
331 | ||
e208f9cc JK |
332 | /* |
333 | * Let callers be aware of the constant return value; this can help | |
9798f7e5 MK |
334 | * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though, |
335 | * because some compilers may not support variadic macros. Since we're only | |
336 | * trying to help gcc, anyway, it's OK; other compilers will fall back to | |
337 | * using the function as usual. | |
e208f9cc | 338 | */ |
ff0a80af | 339 | #if defined(__GNUC__) |
87fe5df3 JK |
340 | static inline int const_error(void) |
341 | { | |
342 | return -1; | |
343 | } | |
344 | #define error(...) (error(__VA_ARGS__), const_error()) | |
e208f9cc JK |
345 | #endif |
346 | ||
18660bc9 | 347 | extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)); |
3bc4181f | 348 | extern void set_error_routine(void (*routine)(const char *err, va_list params)); |
c19a490e | 349 | extern void set_die_is_recursing_routine(int (*routine)(void)); |
39a3f5ea | 350 | |
95662315 | 351 | extern int starts_with(const char *str, const char *prefix); |
698a68be | 352 | |
cf4fff57 JK |
353 | /* |
354 | * If the string "str" begins with the string found in "prefix", return 1. | |
355 | * The "out" parameter is set to "str + strlen(prefix)" (i.e., to the point in | |
356 | * the string right after the prefix). | |
357 | * | |
358 | * Otherwise, return 0 and leave "out" untouched. | |
359 | * | |
360 | * Examples: | |
361 | * | |
362 | * [extract branch name, fail if not a branch] | |
363 | * if (!skip_prefix(ref, "refs/heads/", &branch) | |
364 | * return -1; | |
365 | * | |
366 | * [skip prefix if present, otherwise use whole string] | |
367 | * skip_prefix(name, "refs/heads/", &name); | |
368 | */ | |
369 | static inline int skip_prefix(const char *str, const char *prefix, | |
370 | const char **out) | |
fbca5837 | 371 | { |
ba399c46 | 372 | do { |
cf4fff57 JK |
373 | if (!*prefix) { |
374 | *out = str; | |
375 | return 1; | |
376 | } | |
ba399c46 | 377 | } while (*str++ == *prefix++); |
cf4fff57 | 378 | return 0; |
fbca5837 MV |
379 | } |
380 | ||
35480f0b JK |
381 | /* |
382 | * If buf ends with suffix, return 1 and subtract the length of the suffix | |
383 | * from *len. Otherwise, return 0 and leave *len untouched. | |
384 | */ | |
385 | static inline int strip_suffix_mem(const char *buf, size_t *len, | |
386 | const char *suffix) | |
387 | { | |
388 | size_t suflen = strlen(suffix); | |
389 | if (*len < suflen || memcmp(buf + (*len - suflen), suffix, suflen)) | |
390 | return 0; | |
391 | *len -= suflen; | |
392 | return 1; | |
393 | } | |
394 | ||
395 | /* | |
396 | * If str ends with suffix, return 1 and set *len to the size of the string | |
397 | * without the suffix. Otherwise, return 0 and set *len to the size of the | |
398 | * string. | |
399 | * | |
400 | * Note that we do _not_ NUL-terminate str to the new length. | |
401 | */ | |
402 | static inline int strip_suffix(const char *str, const char *suffix, size_t *len) | |
403 | { | |
404 | *len = strlen(str); | |
405 | return strip_suffix_mem(str, len, suffix); | |
406 | } | |
407 | ||
f52a35fd JK |
408 | static inline int ends_with(const char *str, const char *suffix) |
409 | { | |
410 | size_t len; | |
411 | return strip_suffix(str, suffix, &len); | |
412 | } | |
413 | ||
b130a72b | 414 | #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) |
4050c0df JH |
415 | |
416 | #ifndef PROT_READ | |
417 | #define PROT_READ 1 | |
418 | #define PROT_WRITE 2 | |
419 | #define MAP_PRIVATE 1 | |
4050c0df JH |
420 | #endif |
421 | ||
d6779124 SP |
422 | #define mmap git_mmap |
423 | #define munmap git_munmap | |
424 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
425 | extern int git_munmap(void *start, size_t length); | |
4050c0df | 426 | |
b130a72b JL |
427 | #else /* NO_MMAP || USE_WIN32_MMAP */ |
428 | ||
429 | #include <sys/mman.h> | |
430 | ||
431 | #endif /* NO_MMAP || USE_WIN32_MMAP */ | |
432 | ||
433 | #ifdef NO_MMAP | |
434 | ||
5faaf246 | 435 | /* This value must be multiple of (pagesize * 2) */ |
8c82534d SP |
436 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) |
437 | ||
4050c0df JH |
438 | #else /* NO_MMAP */ |
439 | ||
5faaf246 | 440 | /* This value must be multiple of (pagesize * 2) */ |
22bac0ea SP |
441 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
442 | (sizeof(void*) >= 8 \ | |
443 | ? 1 * 1024 * 1024 * 1024 \ | |
444 | : 32 * 1024 * 1024) | |
4050c0df JH |
445 | |
446 | #endif /* NO_MMAP */ | |
447 | ||
fcf3a21a GV |
448 | #ifndef MAP_FAILED |
449 | #define MAP_FAILED ((void *)-1) | |
450 | #endif | |
451 | ||
fdb2a2a6 JH |
452 | #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT |
453 | #define on_disk_bytes(st) ((st).st_size) | |
454 | #else | |
455 | #define on_disk_bytes(st) ((st).st_blocks * 512) | |
456 | #endif | |
457 | ||
22bac0ea | 458 | #define DEFAULT_PACKED_GIT_LIMIT \ |
ecaebf4a | 459 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) |
8c82534d | 460 | |
6900679c SH |
461 | #ifdef NO_PREAD |
462 | #define pread git_pread | |
463 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
464 | #endif | |
14086b0a SP |
465 | /* |
466 | * Forward decl that will remind us if its twin in cache.h changes. | |
467 | * This function is used in compat/pread.c. But we can't include | |
468 | * cache.h there. | |
469 | */ | |
470 | extern ssize_t read_in_full(int fd, void *buf, size_t count); | |
6900679c | 471 | |
4050c0df JH |
472 | #ifdef NO_SETENV |
473 | #define setenv gitsetenv | |
474 | extern int gitsetenv(const char *, const char *, int); | |
475 | #endif | |
476 | ||
ca5bb5d5 SP |
477 | #ifdef NO_MKDTEMP |
478 | #define mkdtemp gitmkdtemp | |
479 | extern char *gitmkdtemp(char *); | |
480 | #endif | |
481 | ||
0620b39b DA |
482 | #ifdef NO_MKSTEMPS |
483 | #define mkstemps gitmkstemps | |
484 | extern int gitmkstemps(char *, int); | |
485 | #endif | |
486 | ||
731043fd JR |
487 | #ifdef NO_UNSETENV |
488 | #define unsetenv gitunsetenv | |
489 | extern void gitunsetenv(const char *); | |
490 | #endif | |
491 | ||
4050c0df JH |
492 | #ifdef NO_STRCASESTR |
493 | #define strcasestr gitstrcasestr | |
494 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
495 | #endif | |
496 | ||
817151e6 PE |
497 | #ifdef NO_STRLCPY |
498 | #define strlcpy gitstrlcpy | |
499 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
500 | #endif | |
501 | ||
bc6b4f52 JR |
502 | #ifdef NO_STRTOUMAX |
503 | #define strtoumax gitstrtoumax | |
504 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
97000ba6 JS |
505 | #define strtoimax gitstrtoimax |
506 | extern intmax_t gitstrtoimax(const char *, char **, int); | |
bc6b4f52 JR |
507 | #endif |
508 | ||
fa0c87c3 AR |
509 | #ifdef NO_HSTRERROR |
510 | #define hstrerror githstrerror | |
511 | extern const char *githstrerror(int herror); | |
512 | #endif | |
513 | ||
b21b9f1d RS |
514 | #ifdef NO_MEMMEM |
515 | #define memmem gitmemmem | |
516 | void *gitmemmem(const void *haystack, size_t haystacklen, | |
517 | const void *needle, size_t needlelen); | |
518 | #endif | |
519 | ||
40036bed MK |
520 | #ifdef NO_GETPAGESIZE |
521 | #define getpagesize() sysconf(_SC_PAGESIZE) | |
522 | #endif | |
523 | ||
cba22528 | 524 | #ifdef FREAD_READS_DIRECTORIES |
c5445fe0 JS |
525 | #ifdef fopen |
526 | #undef fopen | |
527 | #endif | |
cba22528 BC |
528 | #define fopen(a,b) git_fopen(a,b) |
529 | extern FILE *git_fopen(const char*, const char*); | |
530 | #endif | |
531 | ||
c4582f93 | 532 | #ifdef SNPRINTF_RETURNS_BOGUS |
ab03803c BS |
533 | #ifdef snprintf |
534 | #undef snprintf | |
535 | #endif | |
c4582f93 MR |
536 | #define snprintf git_snprintf |
537 | extern int git_snprintf(char *str, size_t maxsize, | |
538 | const char *format, ...); | |
ab03803c BS |
539 | #ifdef vsnprintf |
540 | #undef vsnprintf | |
541 | #endif | |
c4582f93 MR |
542 | #define vsnprintf git_vsnprintf |
543 | extern int git_vsnprintf(char *str, size_t maxsize, | |
544 | const char *format, va_list ap); | |
545 | #endif | |
546 | ||
726c8ef5 JS |
547 | #ifdef __GLIBC_PREREQ |
548 | #if __GLIBC_PREREQ(2, 1) | |
549 | #define HAVE_STRCHRNUL | |
137c6eaa | 550 | #define HAVE_MEMPCPY |
726c8ef5 JS |
551 | #endif |
552 | #endif | |
553 | ||
554 | #ifndef HAVE_STRCHRNUL | |
659c69cf | 555 | #define strchrnul gitstrchrnul |
9e79f00f AE |
556 | static inline char *gitstrchrnul(const char *s, int c) |
557 | { | |
558 | while (*s && *s != c) | |
559 | s++; | |
560 | return (char *)s; | |
561 | } | |
659c69cf RS |
562 | #endif |
563 | ||
137c6eaa JN |
564 | #ifndef HAVE_MEMPCPY |
565 | #define mempcpy gitmempcpy | |
566 | static inline void *gitmempcpy(void *dest, const void *src, size_t n) | |
567 | { | |
568 | return (char *)memcpy(dest, src, n) + n; | |
569 | } | |
570 | #endif | |
571 | ||
da523cc5 MP |
572 | #ifdef NO_INET_PTON |
573 | int inet_pton(int af, const char *src, void *dst); | |
574 | #endif | |
575 | ||
576 | #ifdef NO_INET_NTOP | |
577 | const char *inet_ntop(int af, const void *src, char *dst, size_t size); | |
578 | #endif | |
579 | ||
7c3ecb32 | 580 | extern void release_pack_memory(size_t); |
97bfeb34 | 581 | |
851c34b0 JS |
582 | typedef void (*try_to_free_t)(size_t); |
583 | extern try_to_free_t set_try_to_free_routine(try_to_free_t); | |
a9a74636 | 584 | |
61f76a36 KS |
585 | #ifdef HAVE_ALLOCA_H |
586 | # include <alloca.h> | |
587 | # define xalloca(size) (alloca(size)) | |
588 | # define xalloca_free(p) do {} while (0) | |
589 | #else | |
590 | # define xalloca(size) (xmalloc(size)) | |
591 | # define xalloca_free(p) (free(p)) | |
592 | #endif | |
112db553 LT |
593 | extern char *xstrdup(const char *str); |
594 | extern void *xmalloc(size_t size); | |
5bf9219d | 595 | extern void *xmallocz(size_t size); |
f8bb1d94 | 596 | extern void *xmallocz_gently(size_t size); |
112db553 LT |
597 | extern void *xmemdupz(const void *data, size_t len); |
598 | extern char *xstrndup(const char *str, size_t len); | |
599 | extern void *xrealloc(void *ptr, size_t size); | |
600 | extern void *xcalloc(size_t nmemb, size_t size); | |
601 | extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
602 | extern ssize_t xread(int fd, void *buf, size_t len); | |
603 | extern ssize_t xwrite(int fd, const void *buf, size_t len); | |
9aa91af0 | 604 | extern ssize_t xpread(int fd, void *buf, size_t len, off_t offset); |
112db553 LT |
605 | extern int xdup(int fd); |
606 | extern FILE *xfdopen(int fd, const char *mode); | |
607 | extern int xmkstemp(char *template); | |
463db9b1 | 608 | extern int xmkstemp_mode(char *template, int mode); |
6e180cdc | 609 | extern int odb_mkstemp(char *template, size_t limit, const char *pattern); |
8640d496 | 610 | extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1); |
f21a47b2 | 611 | |
dc49cd76 SP |
612 | static inline size_t xsize_t(off_t len) |
613 | { | |
46be82df TR |
614 | if (len > (size_t) len) |
615 | die("Cannot handle files this big"); | |
dc49cd76 SP |
616 | return (size_t)len; |
617 | } | |
618 | ||
f1589d10 RJ |
619 | /* in ctype.c, for kwset users */ |
620 | extern const char tolower_trans_tbl[256]; | |
621 | ||
4050c0df | 622 | /* Sane ctype - no locale, and works with signed chars */ |
c2e9364a | 623 | #undef isascii |
4050c0df JH |
624 | #undef isspace |
625 | #undef isdigit | |
626 | #undef isalpha | |
627 | #undef isalnum | |
0fcec2ce | 628 | #undef isprint |
43ccdf56 NK |
629 | #undef islower |
630 | #undef isupper | |
4050c0df JH |
631 | #undef tolower |
632 | #undef toupper | |
1c149ab2 NTND |
633 | #undef iscntrl |
634 | #undef ispunct | |
635 | #undef isxdigit | |
2adf7247 | 636 | |
ca5ab7d1 | 637 | extern const unsigned char sane_ctype[256]; |
4050c0df JH |
638 | #define GIT_SPACE 0x01 |
639 | #define GIT_DIGIT 0x02 | |
640 | #define GIT_ALPHA 0x04 | |
8cc32992 | 641 | #define GIT_GLOB_SPECIAL 0x08 |
f9b7cce6 | 642 | #define GIT_REGEX_SPECIAL 0x10 |
2f6c9760 | 643 | #define GIT_PATHSPEC_MAGIC 0x20 |
1c149ab2 NTND |
644 | #define GIT_CNTRL 0x40 |
645 | #define GIT_PUNCT 0x80 | |
4050c0df | 646 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) |
c2e9364a | 647 | #define isascii(x) (((x) & ~0x7f) == 0) |
4050c0df JH |
648 | #define isspace(x) sane_istest(x,GIT_SPACE) |
649 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
650 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
651 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
0fcec2ce | 652 | #define isprint(x) ((x) >= 0x20 && (x) <= 0x7e) |
43ccdf56 NK |
653 | #define islower(x) sane_iscase(x, 1) |
654 | #define isupper(x) sane_iscase(x, 0) | |
8cc32992 | 655 | #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) |
f9b7cce6 | 656 | #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) |
1c149ab2 NTND |
657 | #define iscntrl(x) (sane_istest(x,GIT_CNTRL)) |
658 | #define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \ | |
659 | GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC) | |
660 | #define isxdigit(x) (hexval_table[x] != -1) | |
4050c0df JH |
661 | #define tolower(x) sane_case((unsigned char)(x), 0x20) |
662 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
2f6c9760 | 663 | #define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC) |
4050c0df JH |
664 | |
665 | static inline int sane_case(int x, int high) | |
666 | { | |
667 | if (sane_istest(x, GIT_ALPHA)) | |
668 | x = (x & ~0x20) | high; | |
669 | return x; | |
670 | } | |
671 | ||
43ccdf56 NK |
672 | static inline int sane_iscase(int x, int is_lower) |
673 | { | |
674 | if (!sane_istest(x, GIT_ALPHA)) | |
675 | return 0; | |
676 | ||
677 | if (is_lower) | |
678 | return (x & 0x20) != 0; | |
679 | else | |
680 | return (x & 0x20) == 0; | |
681 | } | |
682 | ||
6aead43d JM |
683 | static inline int strtoul_ui(char const *s, int base, unsigned int *result) |
684 | { | |
685 | unsigned long ul; | |
686 | char *p; | |
687 | ||
688 | errno = 0; | |
689 | ul = strtoul(s, &p, base); | |
690 | if (errno || *p || p == s || (unsigned int) ul != ul) | |
691 | return -1; | |
692 | *result = ul; | |
693 | return 0; | |
694 | } | |
695 | ||
7791ecbc JH |
696 | static inline int strtol_i(char const *s, int base, int *result) |
697 | { | |
698 | long ul; | |
699 | char *p; | |
700 | ||
701 | errno = 0; | |
702 | ul = strtol(s, &p, base); | |
703 | if (errno || *p || p == s || (int) ul != ul) | |
704 | return -1; | |
705 | *result = ul; | |
706 | return 0; | |
707 | } | |
708 | ||
43fe901b BD |
709 | #ifdef INTERNAL_QSORT |
710 | void git_qsort(void *base, size_t nmemb, size_t size, | |
711 | int(*compar)(const void *, const void *)); | |
712 | #define qsort git_qsort | |
713 | #endif | |
714 | ||
81a24b52 AR |
715 | #ifndef DIR_HAS_BSD_GROUP_SEMANTICS |
716 | # define FORCE_DIR_SET_GID S_ISGID | |
717 | #else | |
718 | # define FORCE_DIR_SET_GID 0 | |
719 | #endif | |
720 | ||
c06ff490 KB |
721 | #ifdef NO_NSEC |
722 | #undef USE_NSEC | |
723 | #define ST_CTIME_NSEC(st) 0 | |
724 | #define ST_MTIME_NSEC(st) 0 | |
725 | #else | |
c567383b BG |
726 | #ifdef USE_ST_TIMESPEC |
727 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) | |
728 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) | |
729 | #else | |
c06ff490 KB |
730 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) |
731 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) | |
732 | #endif | |
c567383b | 733 | #endif |
c06ff490 | 734 | |
34779c53 JS |
735 | #ifdef UNRELIABLE_FSTAT |
736 | #define fstat_is_reliable() 0 | |
737 | #else | |
738 | #define fstat_is_reliable() 1 | |
739 | #endif | |
740 | ||
ab8632ae | 741 | #ifndef va_copy |
26db0f2e JN |
742 | /* |
743 | * Since an obvious implementation of va_list would be to make it a | |
744 | * pointer into the stack frame, a simple assignment will work on | |
745 | * many systems. But let's try to be more portable. | |
746 | */ | |
747 | #ifdef __va_copy | |
748 | #define va_copy(dst, src) __va_copy(dst, src) | |
749 | #else | |
750 | #define va_copy(dst, src) ((dst) = (src)) | |
751 | #endif | |
ab8632ae JK |
752 | #endif |
753 | ||
e05bed96 KB |
754 | #if defined(__GNUC__) || (_MSC_VER >= 1400) |
755 | #define HAVE_VARIADIC_MACROS 1 | |
756 | #endif | |
757 | ||
fc71db39 AR |
758 | /* |
759 | * Preserves errno, prints a message, but gives no warning for ENOENT. | |
760 | * Always returns the return value of unlink(2). | |
761 | */ | |
762 | int unlink_or_warn(const char *path); | |
d1723296 PC |
763 | /* |
764 | * Likewise for rmdir(2). | |
765 | */ | |
766 | int rmdir_or_warn(const char *path); | |
80d706af PC |
767 | /* |
768 | * Calls the correct function out of {unlink,rmdir}_or_warn based on | |
769 | * the supplied file mode. | |
770 | */ | |
771 | int remove_or_warn(unsigned int mode, const char *path); | |
fc71db39 | 772 | |
e5c52c98 JN |
773 | /* |
774 | * Call access(2), but warn for any error except "missing file" | |
775 | * (ENOENT or ENOTDIR). | |
776 | */ | |
4698c8fe JN |
777 | #define ACCESS_EACCES_OK (1U << 0) |
778 | int access_or_warn(const char *path, int mode, unsigned flag); | |
779 | int access_or_die(const char *path, int mode, unsigned flag); | |
ba8bd830 | 780 | |
55b38a48 JH |
781 | /* Warn on an inaccessible file that ought to be accessible */ |
782 | void warn_on_inaccessible(const char *path); | |
783 | ||
2f705875 JK |
784 | /* Get the passwd entry for the UID of the current process. */ |
785 | struct passwd *xgetpwuid_self(void); | |
786 | ||
66547547 JK |
787 | #ifdef GMTIME_UNRELIABLE_ERRORS |
788 | struct tm *git_gmtime(const time_t *); | |
789 | struct tm *git_gmtime_r(const time_t *, struct tm *); | |
790 | #define gmtime git_gmtime | |
791 | #define gmtime_r git_gmtime_r | |
792 | #endif | |
793 | ||
4050c0df | 794 | #endif |