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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 | |
8723f216 NP |
31 | #ifdef __GNUC__ |
32 | #define TYPEOF(x) (__typeof__(x)) | |
33 | #else | |
34 | #define TYPEOF(x) | |
35 | #endif | |
36 | ||
f630cfda | 37 | #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits)))) |
db7244bd | 38 | #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ |
8723f216 | 39 | |
98cb6f30 PH |
40 | #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) |
41 | ||
cf606e3d AW |
42 | /* Approximation of the length of the decimal representation of this type. */ |
43 | #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) | |
44 | ||
4cb18a49 BC |
45 | #if defined(__sun__) |
46 | /* | |
47 | * On Solaris, when _XOPEN_EXTENDED is set, its header file | |
48 | * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE | |
49 | * setting to say we are XPG5 or XPG6. Also on Solaris, | |
50 | * XPG6 programs must be compiled with a c99 compiler, while | |
51 | * non XPG6 programs must be compiled with a pre-c99 compiler. | |
52 | */ | |
53 | # if __STDC_VERSION__ - 0 >= 199901L | |
54 | # define _XOPEN_SOURCE 600 | |
55 | # else | |
56 | # define _XOPEN_SOURCE 500 | |
57 | # endif | |
9398b859 | 58 | #elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && !defined(_M_UNIX) && !defined(sgi) |
85023577 JH |
59 | #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ |
60 | #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ | |
c902c9a6 | 61 | #endif |
fb952206 JR |
62 | #define _ALL_SOURCE 1 |
63 | #define _GNU_SOURCE 1 | |
64 | #define _BSD_SOURCE 1 | |
9a695fbf | 65 | #define _NETBSD_SOURCE 1 |
9398b859 | 66 | #define _SGI_SOURCE 1 |
85023577 | 67 | |
435bdf8c MSO |
68 | #ifdef WIN32 /* Both MinGW and MSVC */ |
69 | #define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */ | |
70 | #include <winsock2.h> | |
71 | #include <windows.h> | |
72 | #endif | |
73 | ||
4050c0df JH |
74 | #include <unistd.h> |
75 | #include <stdio.h> | |
76 | #include <sys/stat.h> | |
77 | #include <fcntl.h> | |
78 | #include <stddef.h> | |
79 | #include <stdlib.h> | |
80 | #include <stdarg.h> | |
81 | #include <string.h> | |
82 | #include <errno.h> | |
83 | #include <limits.h> | |
84 | #include <sys/param.h> | |
4050c0df JH |
85 | #include <sys/types.h> |
86 | #include <dirent.h> | |
85023577 JH |
87 | #include <sys/time.h> |
88 | #include <time.h> | |
89 | #include <signal.h> | |
85023577 | 90 | #include <fnmatch.h> |
f4626df5 JS |
91 | #include <assert.h> |
92 | #include <regex.h> | |
93 | #include <utime.h> | |
94 | #ifndef __MINGW32__ | |
95 | #include <sys/wait.h> | |
85023577 JH |
96 | #include <sys/poll.h> |
97 | #include <sys/socket.h> | |
80bbe72b | 98 | #include <sys/ioctl.h> |
2600973f | 99 | #ifndef NO_SYS_SELECT_H |
80bbe72b | 100 | #include <sys/select.h> |
2600973f | 101 | #endif |
85023577 JH |
102 | #include <netinet/in.h> |
103 | #include <netinet/tcp.h> | |
104 | #include <arpa/inet.h> | |
105 | #include <netdb.h> | |
106 | #include <pwd.h> | |
007e2ba6 | 107 | #include <inttypes.h> |
41b20017 RJ |
108 | #if defined(__CYGWIN__) |
109 | #undef _XOPEN_SOURCE | |
110 | #include <grp.h> | |
111 | #define _XOPEN_SOURCE 600 | |
adbc0b6b | 112 | #include "compat/cygwin.h" |
41b20017 | 113 | #else |
fb952206 | 114 | #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ |
85023577 | 115 | #include <grp.h> |
fb952206 | 116 | #define _ALL_SOURCE 1 |
41b20017 | 117 | #endif |
f4626df5 JS |
118 | #else /* __MINGW32__ */ |
119 | /* pull in Windows compatibility stuff */ | |
120 | #include "compat/mingw.h" | |
121 | #endif /* __MINGW32__ */ | |
d75f8e61 FL |
122 | #ifdef _MSC_VER |
123 | #include "compat/msvc.h" | |
124 | #endif | |
85023577 | 125 | |
e1c06886 DA |
126 | #ifndef NO_LIBGEN_H |
127 | #include <libgen.h> | |
128 | #else | |
129 | #define basename gitbasename | |
130 | extern char *gitbasename(char *); | |
131 | #endif | |
132 | ||
85023577 JH |
133 | #ifndef NO_ICONV |
134 | #include <iconv.h> | |
135 | #endif | |
4050c0df | 136 | |
684ec6c6 RS |
137 | #ifndef NO_OPENSSL |
138 | #include <openssl/ssl.h> | |
139 | #include <openssl/err.h> | |
140 | #endif | |
141 | ||
d0c2449f JH |
142 | /* On most systems <limits.h> would have given us this, but |
143 | * not on some systems (e.g. GNU/Hurd). | |
144 | */ | |
145 | #ifndef PATH_MAX | |
146 | #define PATH_MAX 4096 | |
147 | #endif | |
148 | ||
c4001d92 SP |
149 | #ifndef PRIuMAX |
150 | #define PRIuMAX "llu" | |
151 | #endif | |
152 | ||
607bb3ff JS |
153 | #ifndef PRIu32 |
154 | #define PRIu32 "u" | |
155 | #endif | |
156 | ||
157 | #ifndef PRIx32 | |
158 | #define PRIx32 "x" | |
159 | #endif | |
160 | ||
80ba074f JS |
161 | #ifndef PATH_SEP |
162 | #define PATH_SEP ':' | |
163 | #endif | |
164 | ||
23326d14 JS |
165 | #ifndef STRIP_EXTENSION |
166 | #define STRIP_EXTENSION "" | |
167 | #endif | |
168 | ||
25fe217b JS |
169 | #ifndef has_dos_drive_prefix |
170 | #define has_dos_drive_prefix(path) 0 | |
171 | #endif | |
172 | ||
173 | #ifndef is_dir_sep | |
174 | #define is_dir_sep(c) ((c) == '/') | |
175 | #endif | |
176 | ||
4050c0df JH |
177 | #ifdef __GNUC__ |
178 | #define NORETURN __attribute__((__noreturn__)) | |
18660bc9 | 179 | #define NORETURN_PTR __attribute__((__noreturn__)) |
4050c0df JH |
180 | #else |
181 | #define NORETURN | |
18660bc9 | 182 | #define NORETURN_PTR |
4050c0df JH |
183 | #ifndef __attribute__ |
184 | #define __attribute__(x) | |
185 | #endif | |
186 | #endif | |
187 | ||
51ea5519 NP |
188 | #include "compat/bswap.h" |
189 | ||
4050c0df | 190 | /* General helper functions */ |
a4f3131c | 191 | extern NORETURN void usage(const char *err); |
64b1cb74 | 192 | extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2))); |
a4f3131c EFL |
193 | extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2))); |
194 | extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
4050c0df | 195 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); |
46efd2d9 | 196 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); |
4050c0df | 197 | |
18660bc9 | 198 | extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)); |
39a3f5ea | 199 | |
698a68be | 200 | extern int prefixcmp(const char *str, const char *prefix); |
bb5799d6 | 201 | extern time_t tm_to_time_t(const struct tm *tm); |
698a68be | 202 | |
fbca5837 MV |
203 | static inline const char *skip_prefix(const char *str, const char *prefix) |
204 | { | |
205 | size_t len = strlen(prefix); | |
206 | return strncmp(str, prefix, len) ? NULL : str + len; | |
207 | } | |
208 | ||
b130a72b | 209 | #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) |
4050c0df JH |
210 | |
211 | #ifndef PROT_READ | |
212 | #define PROT_READ 1 | |
213 | #define PROT_WRITE 2 | |
214 | #define MAP_PRIVATE 1 | |
215 | #define MAP_FAILED ((void*)-1) | |
216 | #endif | |
217 | ||
d6779124 SP |
218 | #define mmap git_mmap |
219 | #define munmap git_munmap | |
220 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
221 | extern int git_munmap(void *start, size_t length); | |
4050c0df | 222 | |
b130a72b JL |
223 | #else /* NO_MMAP || USE_WIN32_MMAP */ |
224 | ||
225 | #include <sys/mman.h> | |
226 | ||
227 | #endif /* NO_MMAP || USE_WIN32_MMAP */ | |
228 | ||
229 | #ifdef NO_MMAP | |
230 | ||
5faaf246 | 231 | /* This value must be multiple of (pagesize * 2) */ |
8c82534d SP |
232 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) |
233 | ||
4050c0df JH |
234 | #else /* NO_MMAP */ |
235 | ||
5faaf246 | 236 | /* This value must be multiple of (pagesize * 2) */ |
22bac0ea SP |
237 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
238 | (sizeof(void*) >= 8 \ | |
239 | ? 1 * 1024 * 1024 * 1024 \ | |
240 | : 32 * 1024 * 1024) | |
4050c0df JH |
241 | |
242 | #endif /* NO_MMAP */ | |
243 | ||
fdb2a2a6 JH |
244 | #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT |
245 | #define on_disk_bytes(st) ((st).st_size) | |
246 | #else | |
247 | #define on_disk_bytes(st) ((st).st_blocks * 512) | |
248 | #endif | |
249 | ||
22bac0ea | 250 | #define DEFAULT_PACKED_GIT_LIMIT \ |
ecaebf4a | 251 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) |
8c82534d | 252 | |
6900679c SH |
253 | #ifdef NO_PREAD |
254 | #define pread git_pread | |
255 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
256 | #endif | |
14086b0a SP |
257 | /* |
258 | * Forward decl that will remind us if its twin in cache.h changes. | |
259 | * This function is used in compat/pread.c. But we can't include | |
260 | * cache.h there. | |
261 | */ | |
262 | extern ssize_t read_in_full(int fd, void *buf, size_t count); | |
6900679c | 263 | |
4050c0df JH |
264 | #ifdef NO_SETENV |
265 | #define setenv gitsetenv | |
266 | extern int gitsetenv(const char *, const char *, int); | |
267 | #endif | |
268 | ||
ca5bb5d5 SP |
269 | #ifdef NO_MKDTEMP |
270 | #define mkdtemp gitmkdtemp | |
271 | extern char *gitmkdtemp(char *); | |
272 | #endif | |
273 | ||
0620b39b DA |
274 | #ifdef NO_MKSTEMPS |
275 | #define mkstemps gitmkstemps | |
276 | extern int gitmkstemps(char *, int); | |
277 | #endif | |
278 | ||
731043fd JR |
279 | #ifdef NO_UNSETENV |
280 | #define unsetenv gitunsetenv | |
281 | extern void gitunsetenv(const char *); | |
282 | #endif | |
283 | ||
4050c0df JH |
284 | #ifdef NO_STRCASESTR |
285 | #define strcasestr gitstrcasestr | |
286 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
287 | #endif | |
288 | ||
817151e6 PE |
289 | #ifdef NO_STRLCPY |
290 | #define strlcpy gitstrlcpy | |
291 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
292 | #endif | |
293 | ||
bc6b4f52 JR |
294 | #ifdef NO_STRTOUMAX |
295 | #define strtoumax gitstrtoumax | |
296 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
297 | #endif | |
298 | ||
fa0c87c3 AR |
299 | #ifdef NO_HSTRERROR |
300 | #define hstrerror githstrerror | |
301 | extern const char *githstrerror(int herror); | |
302 | #endif | |
303 | ||
b21b9f1d RS |
304 | #ifdef NO_MEMMEM |
305 | #define memmem gitmemmem | |
306 | void *gitmemmem(const void *haystack, size_t haystacklen, | |
307 | const void *needle, size_t needlelen); | |
308 | #endif | |
309 | ||
cba22528 | 310 | #ifdef FREAD_READS_DIRECTORIES |
c5445fe0 JS |
311 | #ifdef fopen |
312 | #undef fopen | |
313 | #endif | |
cba22528 BC |
314 | #define fopen(a,b) git_fopen(a,b) |
315 | extern FILE *git_fopen(const char*, const char*); | |
316 | #endif | |
317 | ||
c4582f93 MR |
318 | #ifdef SNPRINTF_RETURNS_BOGUS |
319 | #define snprintf git_snprintf | |
320 | extern int git_snprintf(char *str, size_t maxsize, | |
321 | const char *format, ...); | |
322 | #define vsnprintf git_vsnprintf | |
323 | extern int git_vsnprintf(char *str, size_t maxsize, | |
324 | const char *format, va_list ap); | |
325 | #endif | |
326 | ||
726c8ef5 JS |
327 | #ifdef __GLIBC_PREREQ |
328 | #if __GLIBC_PREREQ(2, 1) | |
329 | #define HAVE_STRCHRNUL | |
330 | #endif | |
331 | #endif | |
332 | ||
333 | #ifndef HAVE_STRCHRNUL | |
659c69cf | 334 | #define strchrnul gitstrchrnul |
9e79f00f AE |
335 | static inline char *gitstrchrnul(const char *s, int c) |
336 | { | |
337 | while (*s && *s != c) | |
338 | s++; | |
339 | return (char *)s; | |
340 | } | |
659c69cf RS |
341 | #endif |
342 | ||
d1efefa4 | 343 | extern void release_pack_memory(size_t, int); |
97bfeb34 | 344 | |
112db553 LT |
345 | extern char *xstrdup(const char *str); |
346 | extern void *xmalloc(size_t size); | |
347 | extern void *xmemdupz(const void *data, size_t len); | |
348 | extern char *xstrndup(const char *str, size_t len); | |
349 | extern void *xrealloc(void *ptr, size_t size); | |
350 | extern void *xcalloc(size_t nmemb, size_t size); | |
351 | extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
352 | extern ssize_t xread(int fd, void *buf, size_t len); | |
353 | extern ssize_t xwrite(int fd, const void *buf, size_t len); | |
354 | extern int xdup(int fd); | |
355 | extern FILE *xfdopen(int fd, const char *mode); | |
356 | extern int xmkstemp(char *template); | |
6e180cdc JH |
357 | extern int odb_mkstemp(char *template, size_t limit, const char *pattern); |
358 | extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1); | |
f21a47b2 | 359 | |
dc49cd76 SP |
360 | static inline size_t xsize_t(off_t len) |
361 | { | |
362 | return (size_t)len; | |
363 | } | |
364 | ||
5bb1cda5 | 365 | static inline int has_extension(const char *filename, const char *ext) |
83a2b841 | 366 | { |
5bb1cda5 RS |
367 | size_t len = strlen(filename); |
368 | size_t extlen = strlen(ext); | |
83a2b841 RS |
369 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
370 | } | |
371 | ||
4050c0df | 372 | /* Sane ctype - no locale, and works with signed chars */ |
c2e9364a | 373 | #undef isascii |
4050c0df JH |
374 | #undef isspace |
375 | #undef isdigit | |
376 | #undef isalpha | |
377 | #undef isalnum | |
378 | #undef tolower | |
379 | #undef toupper | |
380 | extern unsigned char sane_ctype[256]; | |
381 | #define GIT_SPACE 0x01 | |
382 | #define GIT_DIGIT 0x02 | |
383 | #define GIT_ALPHA 0x04 | |
8cc32992 | 384 | #define GIT_GLOB_SPECIAL 0x08 |
f9b7cce6 | 385 | #define GIT_REGEX_SPECIAL 0x10 |
4050c0df | 386 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) |
c2e9364a | 387 | #define isascii(x) (((x) & ~0x7f) == 0) |
4050c0df JH |
388 | #define isspace(x) sane_istest(x,GIT_SPACE) |
389 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
390 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
391 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
8cc32992 | 392 | #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) |
f9b7cce6 | 393 | #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) |
4050c0df JH |
394 | #define tolower(x) sane_case((unsigned char)(x), 0x20) |
395 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
396 | ||
397 | static inline int sane_case(int x, int high) | |
398 | { | |
399 | if (sane_istest(x, GIT_ALPHA)) | |
400 | x = (x & ~0x20) | high; | |
401 | return x; | |
402 | } | |
403 | ||
6aead43d JM |
404 | static inline int strtoul_ui(char const *s, int base, unsigned int *result) |
405 | { | |
406 | unsigned long ul; | |
407 | char *p; | |
408 | ||
409 | errno = 0; | |
410 | ul = strtoul(s, &p, base); | |
411 | if (errno || *p || p == s || (unsigned int) ul != ul) | |
412 | return -1; | |
413 | *result = ul; | |
414 | return 0; | |
415 | } | |
416 | ||
7791ecbc JH |
417 | static inline int strtol_i(char const *s, int base, int *result) |
418 | { | |
419 | long ul; | |
420 | char *p; | |
421 | ||
422 | errno = 0; | |
423 | ul = strtol(s, &p, base); | |
424 | if (errno || *p || p == s || (int) ul != ul) | |
425 | return -1; | |
426 | *result = ul; | |
427 | return 0; | |
428 | } | |
429 | ||
43fe901b BD |
430 | #ifdef INTERNAL_QSORT |
431 | void git_qsort(void *base, size_t nmemb, size_t size, | |
432 | int(*compar)(const void *, const void *)); | |
433 | #define qsort git_qsort | |
434 | #endif | |
435 | ||
81a24b52 AR |
436 | #ifndef DIR_HAS_BSD_GROUP_SEMANTICS |
437 | # define FORCE_DIR_SET_GID S_ISGID | |
438 | #else | |
439 | # define FORCE_DIR_SET_GID 0 | |
440 | #endif | |
441 | ||
c06ff490 KB |
442 | #ifdef NO_NSEC |
443 | #undef USE_NSEC | |
444 | #define ST_CTIME_NSEC(st) 0 | |
445 | #define ST_MTIME_NSEC(st) 0 | |
446 | #else | |
c567383b BG |
447 | #ifdef USE_ST_TIMESPEC |
448 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) | |
449 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) | |
450 | #else | |
c06ff490 KB |
451 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) |
452 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) | |
453 | #endif | |
c567383b | 454 | #endif |
c06ff490 | 455 | |
34779c53 JS |
456 | #ifdef UNRELIABLE_FSTAT |
457 | #define fstat_is_reliable() 0 | |
458 | #else | |
459 | #define fstat_is_reliable() 1 | |
460 | #endif | |
461 | ||
fc71db39 AR |
462 | /* |
463 | * Preserves errno, prints a message, but gives no warning for ENOENT. | |
464 | * Always returns the return value of unlink(2). | |
465 | */ | |
466 | int unlink_or_warn(const char *path); | |
467 | ||
4050c0df | 468 | #endif |